1
|
Soto R, Patel P, Albadarin AB, Diniz M, Hudson S. Solubility, aggregation and stability of Amphotericin B drug in pure organic solvents: Thermodynamic analysis and solid form characterization. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
2
|
Soto R, Díaz LA, Rivas V, Fuentes-López E, Zalaquett M, Bruera MJ, González C, Mezzano G, Benítez C. Frailty and reduced gait speed are independently related to mortality of cirrhotic patients in long-term follow-up. Ann Hepatol 2022; 25:100327. [PMID: 33596465 DOI: 10.1016/j.aohep.2021.100327] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES Frailty is characterized by a poor restoration of homeostasis after a stressor event. Although it is not usually diagnosed, it has been associated with decreased survival in cirrhotic patients. We aimed to evaluate the impact of frailty and decreased gait speed over survival in cirrhotic patients at long-term follow-up. MATERIALS AND METHODS We included stable cirrhotic patients Child-Pugh B-C or MELD ≥12, ≥50 years old. We performed a clinical evaluation, anthropometry, and laboratory tests. Frailty was diagnosed using Fried Frailty Index. We evaluated survival at a 4-year follow-up. RESULTS We included 126 patients; mean age 64±8.3 years, median MELD-Na 15[12-17], median follow-up was 881 [349-1277] days. The main etiology was MAFLD (31.4%). Frailty was diagnosed in 65.1% of patients. There were no significant differences in baseline characteristics per frailty condition. Mortality was higher in frail patients than non-frail patients (68.2% versus 20.6% at 48 months, respectively; p-value <0.001). The mean gait speed in frail and non-frail patients was 0.86±0.3m/s and 1.16±0.2m/s, respectively (p-value <0.001). Interestingly, 26.9% of patients presented a reduced gait speed (≤0.8m/s). Patients with decreased gait speed also had higher mortality than patients with normal gait speed (79.9% versus 40.8%, respectively; p-value <0.001). A multivariate-adjusted model showed that decreased gait speed (HR=3.27, 95%CI:1.74-6.14; p<0.001) and frailty (HR=4.24, 95%CI:1.89-9.51; p<0.001) were associated with mortality. CONCLUSIONS Frailty is independently associated with decreased survival at long-term follow-up. Reduced gait speed is strongly associated with mortality and could be a surrogate marker of frailty in clinical practice.
Collapse
Affiliation(s)
- Rubén Soto
- Unidad de Medicina Interna, Universidad Finis Terrae, Santiago, Chile; Unidad de Geriatría, Fundación Arturo López Pérez, Santiago, Chile
| | - Luis Antonio Díaz
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Violeta Rivas
- Unidad de Gastroenterología, Departamento de Medicina Interna, Facultad de Medicina, Universidad de Concepción, Concepción, Chile
| | - Eduardo Fuentes-López
- Departamento de Ciencias de la Salud, Carrera de Fonoaudiología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - María José Bruera
- Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Cecilia González
- Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gabriel Mezzano
- Sección de Gastroenterología, Hospital del Salvador, Santiago, Chile
| | - Carlos Benítez
- Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
| |
Collapse
|
3
|
GARCIA RIVERA A, Aguilar A, Rios K, Villegas Y, Elias M, Rico A, Romo C, Rios F, Villanueva R, Montemayor M, Espinoza H, Soto R, Parra R, Jorge T, Sanchez O. POS-012 RISK FACTORS FOR AKI AND MORTALITY IN COVID-19 IN WESTERN MEXICO. Kidney Int Rep 2022. [PMCID: PMC8854912 DOI: 10.1016/j.ekir.2022.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
4
|
Córdova LA, Reyes M, Soto R, Hernández M, Cortés JE. Dysregulated healing response participates in the pathophysiology of temporomandibular joint ankylosis. J Craniomaxillofac Surg 2021; 49:592-597. [PMID: 33750637 DOI: 10.1016/j.jcms.2021.02.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 12/02/2020] [Accepted: 02/15/2021] [Indexed: 12/01/2022] Open
Abstract
This study aimed to characterize samples from patients diagnosed with TMJ ankylosis, using both clinical and histological data. Both clinical and histological analyses of retrieved tissue samples from patients with primary TMJ ankyloses were performed retrospectively (1980-2012). All patients had been subjected to primary arthroplasty. Our study analyzed connective tissue differentiation, ossification patterns, and bone resorption, using histology and immunohistochemistry. Fifteen case records, with a sex ratio of 4:1 (men:woman) and a median age of 8 years, were collected. Six patient samples reported a previous inflammatory event. Histologically, 15 samples exhibited fibrous tissue. Among these, 13 displayed bone at different stages of maturity (fibrous/bony ankylosis). Eleven samples showed aberrant cartilage, characterized by hypertrophic chondrocyte-like cells at the bone/cartilage interface. Four samples revealed inflammatory infiltrate; in one case, this was organized as a lymphoid follicle. Eleven samples showed bone resorption by attached osteoclasts. Interestingly, non-attached osteoclasts were detected, suggesting locally impaired bone remodeling. An association between the presence of mature/lamellar bone and the presence of osteoclasts was observed (p = 0.03). No association was found between previous history of either trauma or infection and the histological type of ankylosis (p = 0.74). There was no association between the histological presence of inflammation or infection and the type of ankylosis (p = 0.63 and p = 0.87, respectively). Retrieved TMJ ankylosis tissues displayed both aberrant ossification and reduced focal bone resorption, suggesting a dysregulated healing response.
Collapse
Affiliation(s)
- Luis A Córdova
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile; Department of Oral and Maxillofacial Surgery, Clínica Las Condes, Estoril 450, Las Condes, Santiago, Chile; Department of Oral and Maxillofacial Surgery, Complejo Hospitalario San José, San José 1196, Independencia, Santiago, Chile; Craniofacial Translational Research Laboratory, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Montserrat Reyes
- Department of Oral Pathology and Medicine, Laboratory of Periodontal Biology, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Rubén Soto
- Department of Oral Pathology and Medicine, Laboratory of Periodontal Biology, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Marcela Hernández
- Department of Oral Pathology and Medicine, Laboratory of Periodontal Biology, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Juan E Cortés
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile; Department of Oral and Maxillofacial Surgery, Complejo Hospitalario San Borja Arriarán, Av. Sta. Rosa 1234, Santiago, Chile.
| |
Collapse
|
5
|
Krämer S, Lucas J, Gamboa F, Peñarrocha Diago M, Peñarrocha Oltra D, Guzmán‐Letelier M, Paul S, Molina G, Sepúlveda L, Araya I, Soto R, Arriagada C, Lucky AW, Mellerio JE, Cornwall R, Alsayer F, Schilke R, Antal MA, Castrillón F, Paredes C, Serrano MC, Clark V. Clinical practice guidelines: Oral health care for children and adults living with epidermolysis bullosa. Spec Care Dentist 2020; 40 Suppl 1:3-81. [PMID: 33202040 PMCID: PMC7756753 DOI: 10.1111/scd.12511] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Inherited epidermolysis bullosa (EB) is a genetic disorder characterized by skin fragility and unique oral features. AIMS To provide (a) a complete review of the oral manifestations in those living with each type of inherited EB, (b) the current best practices for managing oral health care of people living with EB, (c) the current best practices on dental implant-based oral rehabilitation for patients with recessive dystrophic EB (RDEB), and (d) the current best practice for managing local anesthesia, principles of sedation, and general anesthesia for children and adults with EB undergoing dental treatment. METHODS Systematic literature search, panel discussion including clinical experts and patient representatives from different centers around the world, external review, and guideline piloting. RESULTS This article has been divided into five chapters: (i) general information on EB for the oral health care professional, (ii) systematic literature review on the oral manifestations of EB, (iii) oral health care and dental treatment for children and adults living with EB-clinical practice guidelines, (iv) dental implants in patients with RDEB-clinical practice guidelines, and (v) sedation and anesthesia for adults and children with EB undergoing dental treatment-clinical practice guidelines. Each chapter provides recommendations on the management of the different clinical procedures within dental practice, highlighting the importance of patient-clinician partnership, impact on quality of life, and the importance of follow-up appointments. Guidance on the use on nonadhesive wound care products and emollients to reduce friction during patient care is provided. CONCLUSIONS Oral soft and hard tissue manifestations of inherited EB have unique patterns of involvement associated with each subtype of the condition. Understanding each subtype individually will help the professionals plan long-term treatment approaches.
Collapse
Affiliation(s)
- Susanne Krämer
- Facultad de OdontologíaUniversidad de ChileSantiagoChile
| | - James Lucas
- Dental DepartmentRoyal Children's HospitalMelbourneAustralia
| | | | | | | | - Marcelo Guzmán‐Letelier
- Hospital Base ValdiviaValdiviaChile
- Facultad de OdontologiaUniversidad San SebastiánValdiviaChile
| | | | - Gustavo Molina
- Universidad Nacional de CórdobaArgentina
- Universidad Católica de CórdobaArgentina
| | | | - Ignacio Araya
- Facultad de OdontologíaUniversidad de ChileSantiagoChile
- Hospital Santiago OrienteMaxillofacial Surgery UnitChile
| | - Rubén Soto
- Facultad de OdontologíaUniversidad de ChileSantiagoChile
| | | | - Anne W Lucky
- Cincinnati Children's Epidermolysis Bullosa CenterCincinnati Children's HospitalCincinnatiOhioUSA
- The University of Cincinnati College of MedicineCincinnatiOhioUSA
| | - Jemima E Mellerio
- St John's Institute of DermatologyGuy's and St Thomas’ NHS Foundation TrustLondonUK
| | - Roger Cornwall
- Cincinnati Children's Epidermolysis Bullosa CenterCincinnati Children's HospitalCincinnatiOhioUSA
| | - Fatimah Alsayer
- Royal National ENT and Eastman Dental HospitalsUniversity College London HospitalsLondonUK
| | - Reinhard Schilke
- Hannover Medical SchoolDepartment of Conservative DentistryPeriodontology and Preventive DentistryHannoverGermany
| | | | | | - Camila Paredes
- Facultad de OdontologíaUniversidad de ChileSantiagoChile
| | | | | |
Collapse
|
6
|
Abstract
SummaryA quantitative and qualitative deficiency of antithrombin III (AT III) was found in four members of a Spanish family with thrombotic tendency. In all affected members, levels of AT III antigen and activity (heparin cofactor activity) were reduced to 50% of the normal range. When crossed immunoelectrophoresis (CIE) was performed in the presence of heparin, an abnormal slow-moving peak was found. Crossed immunoelectrofocusing (CIEF) from normal and affected individuals showed that normal AT III migrated between pH 4.9–5.3 while the AT III under study was asymetrically distributed between two pH ranges: 4.9–5.3 and 4.6–4.8. Affinity adsorption of affected members’ plasma to heparin-sepharose beads revealed one population of AT III in the supernatant corresponding to the abnormal AT III, devoid of heparin cofactor activity and showing a peak between pH range: 4.6–4.8 in CIEF.Our data supports the view that a quantitative-qualitative deficiency was present in the heterozygous state in all the affected family members. Both normal and abnormal ATIII were present in plasma of the affected individuals. This abnormal ATIII was characterized by a lack of affinity for heparin. This familial ATIII deficiency was named ATIII Barcelona.
Collapse
Affiliation(s)
- E Grau
- The Servei d’Hematologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - J Fontcuberta
- The Servei d’Hematologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - J Félez
- The Servei d’Hematologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - I de Diego
- The Servei d’Hematologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - R Soto
- The Servei d’Hematologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - M LI Rutllant
- The Servei d’Hematologia, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| |
Collapse
|
7
|
Soto R, Fité C, Ramírez E, Iborra M, Tejero J. Catalytic activity dependence on morphological properties of acidic ion-exchange resins for the simultaneous ETBE and TAEE liquid-phase synthesis. REACT CHEM ENG 2018. [DOI: 10.1039/c7re00177k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Resin acid capacity and specific volume of the swollen polymer are the key properties that determine its catalytic activity.
Collapse
Affiliation(s)
- R. Soto
- Faculty of Chemistry
- Chemical Engineering and Analytical Chemistry Department
- University of Barcelona
- 08028-Barcelona
- Spain
| | - C. Fité
- Faculty of Chemistry
- Chemical Engineering and Analytical Chemistry Department
- University of Barcelona
- 08028-Barcelona
- Spain
| | - E. Ramírez
- Faculty of Chemistry
- Chemical Engineering and Analytical Chemistry Department
- University of Barcelona
- 08028-Barcelona
- Spain
| | - M. Iborra
- Faculty of Chemistry
- Chemical Engineering and Analytical Chemistry Department
- University of Barcelona
- 08028-Barcelona
- Spain
| | - J. Tejero
- Faculty of Chemistry
- Chemical Engineering and Analytical Chemistry Department
- University of Barcelona
- 08028-Barcelona
- Spain
| |
Collapse
|
8
|
Hernández-Santos C, Rodriguez-Leal E, Soto R, Gordillo J. Kinematics and Dynamics of a New 16 DOF Humanoid Biped Robot with Active Toe Joint. INT J ADV ROBOT SYST 2017. [DOI: 10.5772/52452] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Humanoid biped robots are typically complex in design, having numerous Degrees-of-Freedom (DOF) due to the ambitious goal of mimicking the human gait. The paper proposes a new architecture for a biped robot with seven DOF per each leg and one DOF corresponding to the toe joint. Furthermore, this work presents close equations for the forward and inverse kinematics by dividing the walking gait into the Sagittal and Frontal planes. This paper explains the mathematical model of the dynamics equations for the legs into the Sagittal and Frontal planes by further applying the principle of Lagrangian dynamics. Finally, a control approach using a PD control law with gravity compensation was recurred in order to control the desired trajectories and finding the required torque by the joints. The paper contains several simulations and numerical examples to prove the analytical results, using SimMechanics of MATLAB toolbox and SolidWorks to verify the analytical results.
Collapse
Affiliation(s)
- C. Hernández-Santos
- Center for Robotics and Intelligent Systems, Tecnológico de Monterrey, Campus Monterrey, México
| | - E. Rodriguez-Leal
- Center for Robotics and Intelligent Systems, Tecnológico de Monterrey, Campus Monterrey, México
| | - R. Soto
- Center for Robotics and Intelligent Systems, Tecnológico de Monterrey, Campus Monterrey, México
| | - J.L. Gordillo
- Center for Robotics and Intelligent Systems, Tecnológico de Monterrey, Campus Monterrey, México
| |
Collapse
|
9
|
Sartelli M, Weber DG, Ruppé E, Bassetti M, Wright BJ, Ansaloni L, Catena F, Coccolini F, Abu-Zidan FM, Coimbra R, Moore EE, Moore FA, Maier RV, De Waele JJ, Kirkpatrick AW, Griffiths EA, Eckmann C, Brink AJ, Mazuski JE, May AK, Sawyer RG, Mertz D, Montravers P, Kumar A, Roberts JA, Vincent JL, Watkins RR, Lowman W, Spellberg B, Abbott IJ, Adesunkanmi AK, Al-Dahir S, Al-Hasan MN, Agresta F, Althani AA, Ansari S, Ansumana R, Augustin G, Bala M, Balogh ZJ, Baraket O, Bhangu A, Beltrán MA, Bernhard M, Biffl WL, Boermeester MA, Brecher SM, Cherry-Bukowiec JR, Buyne OR, Cainzos MA, Cairns KA, Camacho-Ortiz A, Chandy SJ, Che Jusoh A, Chichom-Mefire A, Colijn C, Corcione F, Cui Y, Curcio D, Delibegovic S, Demetrashvili Z, De Simone B, Dhingra S, Diaz JJ, Di Carlo I, Dillip A, Di Saverio S, Doyle MP, Dorj G, Dogjani A, Dupont H, Eachempati SR, Enani MA, Egiev VN, Elmangory MM, Ferrada P, Fitchett JR, Fraga GP, Guessennd N, Giamarellou H, Ghnnam W, Gkiokas G, Goldberg SR, Gomes CA, Gomi H, Guzmán-Blanco M, Haque M, Hansen S, Hecker A, Heizmann WR, Herzog T, Hodonou AM, Hong SK, Kafka-Ritsch R, Kaplan LJ, Kapoor G, Karamarkovic A, Kees MG, Kenig J, Kiguba R, Kim PK, Kluger Y, Khokha V, Koike K, Kok KY, Kong V, Knox MC, Inaba K, Isik A, Iskandar K, Ivatury RR, Labbate M, Labricciosa FM, Laterre PF, Latifi R, Lee JG, Lee YR, Leone M, Leppaniemi A, Li Y, Liang SY, Loho T, Maegele M, Malama S, Marei HE, Martin-Loeches I, Marwah S, Massele A, McFarlane M, Melo RB, Negoi I, Nicolau DP, Nord CE, Ofori-Asenso R, Omari AH, Ordonez CA, Ouadii M, Pereira Júnior GA, Piazza D, Pupelis G, Rawson TM, Rems M, Rizoli S, Rocha C, Sakakushev B, Sanchez-Garcia M, Sato N, Segovia Lohse HA, Sganga G, Siribumrungwong B, Shelat VG, Soreide K, Soto R, Talving P, Tilsed JV, Timsit JF, Trueba G, Trung NT, Ulrych J, van Goor H, Vereczkei A, Vohra RS, Wani I, Uhl W, Xiao Y, Yuan KC, Zachariah SK, Zahar JR, Zakrison TL, Corcione A, Melotti RM, Viscoli C, Viale P. Erratum to: Antimicrobials: a global alliance for optimizing their rational use in intra-abdominal infections (AGORA). World J Emerg Surg 2017; 12:35. [PMID: 28785301 PMCID: PMC5541698 DOI: 10.1186/s13017-017-0147-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 07/27/2017] [Indexed: 02/08/2023] Open
Abstract
[This corrects the article DOI: 10.1186/s13017-016-0089-y.].
Collapse
Affiliation(s)
- M. Sartelli
- Department of Surgery, Macerata Hospital, Via Santa Lucia 2, 62100 Macerata, Italy
| | - D. G. Weber
- 0000 0004 0453 3875grid.416195.eDepartment of Trauma Surgery, Royal Perth Hospital, Perth, Australia
| | - E. Ruppé
- 0000 0001 0721 9812grid.150338.cGenomic Research Laboratory, Geneva University Hospitals, Geneva, Switzerland
| | - M. Bassetti
- grid.411492.bInfectious Diseases Division, Santa Maria Misericordia University Hospital, Udine, Italy
| | - B. J. Wright
- 0000 0001 2216 9681grid.36425.36Department of Emergency Medicine and Surgery, Stony Brook University School of Medicine, Stony Brook, NY USA
| | - L. Ansaloni
- 0000 0004 1757 8431grid.460094.fGeneral Surgery Department, Papa Giovanni XXIII Hospital, Bergamo, Italy
| | - F. Catena
- Department of General, Maggiore Hospital, Parma, Italy
| | - F. Coccolini
- grid.414614.2Department of Surgery, “Infermi” Hospital, Rimini, Italy
| | - F. M. Abu-Zidan
- 0000 0001 2193 6666grid.43519.3aDepartment of Surgery, College of Medicine and Health Sciences, UAE University, Al-Ain, United Arab Emirates
| | - R. Coimbra
- 0000 0001 2107 4242grid.266100.3Department of Surgery, UC San Diego Medical Center, San Diego, USA
| | - E. E. Moore
- Department of Surgery, University of Colorado, Denver Health Medical Center, Denver, CO USA
| | - F. A. Moore
- 0000 0004 1936 8091grid.15276.37Department of Surgery, Division of Acute Care Surgery, and Center for Sepsis and Critical Illness Research, University of Florida College of Medicine, Gainesville, FL USA
| | - R. V. Maier
- 0000000122986657grid.34477.33Department of Surgery, University of Washington, Seattle, WA USA
| | - J. J. De Waele
- 0000 0004 0626 3303grid.410566.0Department of Critical Care Medicine, Ghent University Hospital, Ghent, Belgium
| | - A. W. Kirkpatrick
- 0000 0004 0469 2139grid.414959.4General, Acute Care, and Trauma Surgery, Foothills Medical Centre, Calgary, AB Canada
| | - E. A. Griffiths
- 0000 0001 2177 007Xgrid.415490.dGeneral and Upper GI Surgery, Queen Elizabeth Hospital, Birmingham, UK
| | - C. Eckmann
- Department of General, Visceral, and Thoracic Surgery, Klinikum Peine, Academic Hospital of Medical University Hannover, Peine, Germany
| | - A. J. Brink
- 0000 0004 0634 9246grid.415666.6Department of Clinical microbiology, Ampath National Laboratory Services, Milpark Hospital, Johannesburg, South Africa
| | - J. E. Mazuski
- 0000 0001 2355 7002grid.4367.6Department of Surgery, School of Medicine, Washington University in Saint Louis, Saint Louis, MO USA
| | - A. K. May
- 0000 0004 1936 9916grid.412807.8Departments of Surgery and Anesthesiology, Division of Trauma and Surgical Critical Care, Vanderbilt University Medical Center, Nashville, TN USA
| | - R. G. Sawyer
- 0000 0004 1936 9932grid.412587.dDepartment of Surgery, University of Virginia Health System, Charlottesville, VA USA
| | - D. Mertz
- 0000 0004 1936 8227grid.25073.33Departments of Medicine, Clinical Epidemiology and Biostatistics, and Pathology and Molecular Medicine, McMaster University, Hamilton, ON Canada
| | - P. Montravers
- 0000 0001 2217 0017grid.7452.4Département d’Anesthésie-Réanimation, CHU Bichat Claude-Bernard-HUPNVS, Assistance Publique-Hôpitaux de Paris, University Denis Diderot, Paris, France
| | - A. Kumar
- 0000 0004 1936 9609grid.21613.37Section of Critical Care Medicine and Section of Infectious Diseases, Department of Medicine, Medical Microbiology and Pharmacology/Therapeutics, University of Manitoba, Winnipeg, MB Canada
| | - J. A. Roberts
- 0000 0000 9320 7537grid.1003.2Australia Pharmacy Department, Royal Brisbane and Womens’ Hospital, Burns, Trauma, and Critical Care Research Centre, Australia School of Pharmacy, The University of Queensland, QLD, Brisbane, Australia
| | - J. L. Vincent
- 0000 0001 2348 0746grid.4989.cDepartment of Intensive Care, Erasme Hospital, Université libre de Bruxelles, Brussels, Belgium
| | - R. R. Watkins
- 0000 0004 0459 7529grid.261103.7Department of Internal Medicine, Division of Infectious Diseases, Akron General Medical Center, Northeast Ohio Medical University, Akron, OH USA
| | - W. Lowman
- 0000 0004 1937 1135grid.11951.3dClinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - B. Spellberg
- 0000 0001 2156 6853grid.42505.36Division of Infectious Diseases, Los Angeles County-University of Southern California (USC) Medical Center, Keck School of Medicine at USC, Los Angeles, CA USA
| | - I. J. Abbott
- 0000 0004 0432 511Xgrid.1623.6Department of Infectious Diseases, Alfred Hospital, Melbourne, VIC Australia
| | - A. K. Adesunkanmi
- 0000 0001 2183 9444grid.10824.3fDepartment of Surgery, College of Health Sciences, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - S. Al-Dahir
- 0000 0000 9679 3586grid.268355.fDivision of Clinical and Administrative Sciences, College of Pharmacy, Xavier University of Louisiana, New Orleans, LA USA
| | - M. N. Al-Hasan
- 0000 0000 9075 106Xgrid.254567.7Department of Medicine, Division of Infectious Diseases, University of South Carolina School of Medicine, Columbia, SC USA
| | - F. Agresta
- General Surgery, ULSS19 del Veneto, Adria Hospital, Adria, RO Italy
| | - A. A. Althani
- 0000 0004 0634 1084grid.412603.2Biomedical Research Center, Qatar University, Doha, Qatar
| | - S. Ansari
- 0000 0001 0665 3553grid.412334.3Department of Microbiology, Chitwan Medical College, and Department of Environmental and Preventive Medicine, Oita University, Oita, Japan
| | - R. Ansumana
- 0000 0001 0721 6195grid.469452.8Centre for Neglected Tropical Diseases, Liverpool School of Tropical Medicine, University of Liverpool, and Mercy Hospital Research Laboratory, Njala University, Bo, Sierra Leone
| | - G. Augustin
- 0000 0004 0397 9648grid.412688.1Department of Surgery, University Hospital Center, Zagreb, Croatia
| | - M. Bala
- 0000 0001 2221 2926grid.17788.31Trauma and Acute Care Surgery Unit, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Z. J. Balogh
- 0000 0004 0577 6676grid.414724.0Department of Traumatology, John Hunter Hospital and University of Newcastle, Newcastle, NSW Australia
| | - O. Baraket
- Department of Surgery, Bizerte Hospital, Bizerte, Tunisia
| | - A. Bhangu
- 0000 0001 2177 007Xgrid.415490.dAcademic Department of Surgery, Queen Elizabeth Hospital, Birmingham, UK
| | - M. A. Beltrán
- Department of General Surgery, Hospital San Juan de Dios de La Serena, La Serena, Chile
| | - M. Bernhard
- 0000 0001 2230 9752grid.9647.cEmergency Department, University of Leipzig, Leipzig, Germany
| | - W. L. Biffl
- 0000000107903411grid.241116.1Department of Surgery, University of Colorado, Denver, CO USA
| | - M. A. Boermeester
- 0000000404654431grid.5650.6Department of Surgery, Academic Medical Centre, Amsterdam, The Netherlands
| | - S. M. Brecher
- 0000 0004 0367 5222grid.475010.7Department of Pathology and Laboratory Medicine, VA Boston HealthCare System, and Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA USA
| | - J. R. Cherry-Bukowiec
- 0000000086837370grid.214458.eDivision of Acute Care Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI USA
| | - O. R. Buyne
- 0000 0004 0444 9382grid.10417.33Department of Surgery, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - M. A. Cainzos
- 0000 0000 8816 6945grid.411048.8Department of Surgery, Hospital Clínico Universitario, Santiago de Compostela, Spain
| | - K. A Cairns
- 0000 0004 0432 5259grid.267362.4Pharmacy Department, Alfred Health, Melbourne, VIC Australia
| | - A. Camacho-Ortiz
- 0000 0004 1760 058Xgrid.464574.0Hospital Epidemiology and Infectious Diseases, Hospital Universitario Dr Jose Eleuterio Gonzalez, Monterrey, Mexico
| | - S. J. Chandy
- 0000 0004 1781 1790grid.448741.aDepartment of Pharmacology, Pushpagiri Institute of Medical Sciences and Research Centre, Thiruvalla, Kerala India
| | - A. Che Jusoh
- Department of General Surgery, Kuala Krai Hospital, Kuala Krai, Kelantan Malaysia
| | - A. Chichom-Mefire
- Department of Surgery and Obstetrics/Gynaecology, Regional Hospital, Limbe, Cameroon
| | - C. Colijn
- 0000 0001 2113 8111grid.7445.2Department of Mathematics, Imperial College London, London, UK
| | - F. Corcione
- 0000 0004 1755 4122grid.416052.4Department of Laparoscopic and Robotic Surgery, Colli-Monaldi Hospital, Naples, Italy
| | - Y. Cui
- 0000 0000 9792 1228grid.265021.2Department of Surgery, Tianjin Nankai Hospital, Nankai Clinical School of Medicine, Tianjin Medical University, Tianjin, China
| | - D. Curcio
- Infectología Institucional SRL, Hospital Municipal Chivilcoy, Buenos Aires, Argentina
| | - S. Delibegovic
- 0000 0001 0682 9061grid.412410.2Department of Surgery, University Clinical Center of Tuzla, Tuzla, Bosnia and Herzegovina
| | - Z. Demetrashvili
- Department General Surgery, Kipshidze Central University Hospital, Tbilisi, Georgia
| | - B. De Simone
- Department of Surgery, Quatre Villes Hospital, St Cloud, France
| | - S. Dhingra
- grid.430529.9School of Pharmacy, Faculty of Medical Sciences, The University of the West Indies, St. Augustine, Eric Williams Medical Sciences Complex, Uriah Butler Highway, Champ Fleurs, Trinidad and Tobago
| | - J. J. Diaz
- Division of Acute Care Surgery, Program in Trauma, R Adams Cowley Shock Trauma Center, University of Maryland, Baltimore, MD USA
| | - I. Di Carlo
- 0000 0004 1757 1969grid.8158.4Department of Surgical Sciences, Cannizzaro Hospital, University of Catania, Catania, Italy
| | - A. Dillip
- 0000 0000 9144 642Xgrid.414543.3Ifakara Health Institute, Dar es Salaam, Tanzania
| | - S. Di Saverio
- 0000 0004 1759 7093grid.416290.8Department of Surgery, Maggiore Hospital, Bologna, Italy
| | - M. P. Doyle
- 0000 0004 1936 738Xgrid.213876.9Center for Food Safety, Department of Food Science and Technology, University of Georgia, Griffin, GA USA
| | - G. Dorj
- grid.444534.6School of Pharmacy and Biomedicine, Mongolian National University of Medical Sciences, Ulaanbaatar, Mongolia
| | - A. Dogjani
- Department of Surgery, University Hospital of Trauma, Tirana, Albania
| | - H. Dupont
- 0000 0001 0789 1385grid.11162.35Département d’Anesthésie-Réanimation, CHU Amiens-Picardie, and INSERM U1088, Université de Picardie Jules Verne, Amiens, France
| | - S. R. Eachempati
- Department of Surgery, Division of Burn, Critical Care, and Trauma Surgery (K.P.S., S.R.E.), Weill Cornell Medical College/New York-Presbyterian Hospital, New York, USA
| | - M. A. Enani
- 0000 0004 0593 1832grid.415277.2Department of Medicine, Infectious Disease Division, King Fahad Medical City, Riyadh, Saudi Arabia
| | - V. N. Egiev
- 0000 0000 9559 0613grid.78028.35Department of Surgery, Pirogov Russian National Research Medical University, Moscow, Russian Federation
| | - M. M. Elmangory
- grid.414827.cSudan National Public Health Laboratory, Federal Ministry of Health, Khartoum, Sudan
| | - P. Ferrada
- 0000 0004 0458 8737grid.224260.0Department of Surgery, Virginia Commonwealth University, Richmond, VA USA
| | - J. R. Fitchett
- 000000041936754Xgrid.38142.3cDepartment of Global Health and Population, Harvard T.H. Chan School of Public Health, Boston, MA USA
| | - G. P. Fraga
- 0000 0001 0723 2494grid.411087.bDivision of Trauma Surgery, Department of Surgery, School of Medical Sciences, University of Campinas (Unicamp), Campinas, SP Brazil
| | | | - H. Giamarellou
- grid.414012.26th Department of Internal Medicine, Hygeia General Hospital, Athens, Greece
| | - W. Ghnnam
- 0000000103426662grid.10251.37Department of General Surgery, Mansoura Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - G. Gkiokas
- 0000 0001 2155 0800grid.5216.02nd Department of Surgery, Aretaieion University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - S. R. Goldberg
- 0000 0004 0458 8737grid.224260.0Department of Surgery, Virginia Commonwealth University, Richmond, VA USA
| | - C. A. Gomes
- Department of Surgery, Hospital Universitário Terezinha de Jesus, Faculdade de Ciências Médicas e da Saúde de Juiz de Fora, Juiz de Fora, Brazil
| | - H. Gomi
- 0000 0001 2369 4728grid.20515.33Center for Global Health, Mito Kyodo General Hospital, University of Tsukuba, Mito, Ibaraki Japan
| | - M. Guzmán-Blanco
- Hospital Privado Centro Médico de Caracas and Hospital Vargas de Caracas, Caracas, Venezuela
| | - M. Haque
- grid.449287.4Unit of Pharmacology, Faculty of Medicine and Defense Health, National Defence University of Malaysia, Kuala Lumpur, Malaysia
| | - S. Hansen
- 0000 0001 2218 4662grid.6363.0Institute of Hygiene, Charité-Universitätsmedizin Berlin, Hindenburgdamm 27, 12203 Berlin, Germany
| | - A. Hecker
- 0000 0000 8584 9230grid.411067.5Department of General and Thoracic Surgery, University Hospital Giessen, Giessen, Germany
| | | | - T. Herzog
- 0000 0004 0490 981Xgrid.5570.7Department of Surgery, St. Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - A. M. Hodonou
- grid.440525.2Department of Surgery, Faculté de médecine, Université de Parakou, BP 123, Parakou, Bénin
| | - S. K. Hong
- 0000 0004 0533 4667grid.267370.7Division of Trauma and Surgical Critical Care, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - R. Kafka-Ritsch
- 0000 0000 8853 2677grid.5361.1Department of Visceral, Transplant and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria
| | - L. J. Kaplan
- 0000 0004 1936 8972grid.25879.31Department of Surgery Philadelphia VA Medical Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
| | - G. Kapoor
- grid.415285.fDepartment of Microbiology, Gandhi Medical College, Bhopal, India
| | - A. Karamarkovic
- 0000 0001 2166 9385grid.7149.bClinic for Emergency Surgery, Medical Faculty University of Belgrade, Belgrade, Serbia
| | - M. G. Kees
- 0000 0001 2218 4662grid.6363.0Department of Anesthesiology and Intensive Care, Charité Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin, Germany
| | - J. Kenig
- 0000 0001 2162 9631grid.5522.03rd Department of General Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - R. Kiguba
- 0000 0004 0620 0548grid.11194.3cDepartment of Pharmacology and Therapeutics, College of Health Sciences, Makerere University, Kampala, Uganda
| | - P. K. Kim
- 0000 0001 2152 0791grid.240283.fDepartment of Surgery, Albert Einstein College of Medicine and Jacobi Medical Center, Bronx, NY USA
| | - Y. Kluger
- 0000 0000 9950 8111grid.413731.3Department of General Surgery, Division of Surgery, Rambam Health Care Campus, Haifa, Israel
| | - V. Khokha
- Department of Emergency Surgery, City Hospital, Mozyr, Belarus
| | - K. Koike
- 0000 0004 0372 2033grid.258799.8Department of Primary Care and Emergency Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - K. Y. Kok
- Department of Surgery, The Brunei Cancer Centre, Jerudong Park, Brunei
| | - V. Kong
- 0000 0004 0576 7753grid.414386.cDepartment of Surgery, Edendale Hospital, Pietermaritzburg, South Africa
| | - M. C. Knox
- 0000 0004 1936 834Xgrid.1013.3School of Medicine, Western Sydney University, Campbelltown, NSW Australia
| | - K. Inaba
- 0000 0001 2156 6853grid.42505.36Division of Acute Care Surgery and Surgical Critical Care, Department of Surgery, Los Angeles County and University of Southern California Medical Center, University of Southern California, Los Angeles, CA USA
| | - A. Isik
- 0000 0001 1498 7262grid.412176.7Department of General Surgery, Erzincan University, Faculty of Medicine, Erzincan, Turkey
| | - K. Iskandar
- 0000 0004 0417 6142grid.444421.3Department of Pharmacy, Lebanese International University, Beirut, Lebanon
| | - R. R. Ivatury
- 0000 0004 0458 8737grid.224260.0Department of Surgery, Virginia Commonwealth University, Richmond, VA USA
| | - M. Labbate
- 0000 0004 1936 7611grid.117476.2School of Life Science and The ithree Institute, University of Technology, Sydney, NSW Australia
| | - F. M. Labricciosa
- Department of Biomedical Sciences and Public Health, Unit of Hygiene, Preventive Medicine and Public Health, UNIVMP, Ancona, Italy
| | - P. F. Laterre
- 0000 0001 2294 713Xgrid.7942.8Department of Critical Care Medicine, Cliniques Universitaires Saint Luc, Université Catholique de Louvain (UCL), Brussels, Belgium
| | - R. Latifi
- 0000 0001 2168 186Xgrid.134563.6Department of Surgery, Division of Trauma, University of Arizona, Tucson, AZ USA
| | - J. G. Lee
- 0000 0004 0470 5454grid.15444.30Department of Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Y. R. Lee
- grid.449762.aTexas Tech University Health Sciences Center School of Pharmacy, Abilene, TX USA
| | - M. Leone
- 0000 0001 2176 4817grid.5399.6Department of Anaesthesiology and Critical Care, Hôpital Nord, Assistance Publique-Hôpitaux de Marseille, Aix Marseille Université, Marseille, France
| | - A. Leppaniemi
- Abdominal Center, University Hospital Meilahti, Helsinki, Finland
| | - Y. Li
- 0000 0001 2314 964Xgrid.41156.37Department of Surgery, Inling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - S. Y. Liang
- 0000 0001 2355 7002grid.4367.6Division of Infectious Diseases, Division of Emergency Medicine, Washington University School of Medicine, St. Louis, MO USA
| | - T. Loho
- 0000000120191471grid.9581.5Division of Infectious Diseases, Department of Clinical Pathology, Faculty of Medicine, University of Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - M. Maegele
- 0000 0000 9024 6397grid.412581.bDepartment for Traumatology and Orthopedic Surgery, Cologne Merheim Medical Center (CMMC), University of Witten/Herdecke (UW/H), Cologne, Germany
| | - S. Malama
- 0000 0000 8914 5257grid.12984.36Health Research Program, Institute of Economic and Social Research, University of Zambia, Lusaka, Zambia
| | - H. E. Marei
- 0000 0004 0634 1084grid.412603.2Biomedical Research Center, Qatar University, Doha, Qatar
| | - I. Martin-Loeches
- Multidisciplinary Intensive Care Research Organization (MICRO), Wellcome Trust-HRB Clinical Research, Department of Clinical Medicine, Trinity Centre for Health Sciences, St James’ University Hospital, Dublin, Ireland
| | - S. Marwah
- 0000 0004 1771 1642grid.412572.7Department of Surgery, Post-Graduate Institute of Medical Sciences, Rohtak, India
| | - A. Massele
- 0000 0004 0635 5486grid.7621.2Department of Clinical Pharmacology, School of Medicine, University of Botswana, Gaborone, Botswana
| | - M. McFarlane
- 0000 0004 0500 5353grid.412963.bDepartment of Surgery, Radiology, University Hospital of the West Indies, Kingston, Jamaica
| | - R. B. Melo
- 0000 0000 9375 4688grid.414556.7General Surgery Department, Centro Hospitalar de São João, Porto, Portugal
| | - I. Negoi
- Department of Surgery, Emergency Hospital of Bucharest, Bucharest, Romania
| | - D. P. Nicolau
- Center of Anti-Infective Research and Development, Hartford, CT USA
| | - C. E. Nord
- 0000 0000 9241 5705grid.24381.3cDepartment of Laboratory Medicine, Division of Clinical Microbiology, Karolinska University Hospital Huddinge, Stockholm, Sweden
| | | | - A. H. Omari
- 0000 0004 0411 3985grid.460946.9Department of Surgery, King Abdullah University Hospital, Irbid, Jordan
| | - C. A. Ordonez
- 0000 0001 2295 7397grid.8271.cDepartment of Surgery and Critical Care, Universidad del Valle, Fundación Valle del Lili, Cali, Colombia
| | - M. Ouadii
- Department of Surgery, Hassan II University Hospital, Medical School of Fez, Sidi Mohamed Benabdellah University, Fez, Morocco
| | - G. A. Pereira Júnior
- Division of Emergency and Trauma Surgery, Ribeirão Preto Medical School, Ribeirão Preto, Brazil
| | - D. Piazza
- Division of Surgery, Vittorio Emanuele Hospital, Catania, Italy
| | - G. Pupelis
- Department of General and Emergency Surgery, Riga East University Hospital ‘Gailezers’, Riga, Latvia
| | - T. M. Rawson
- 0000 0001 2113 8111grid.7445.2National Institute for Health Research, Health Protection Research Unit in Healthcare Associated Infections and Antimicrobial Resistance, Imperial College London, Hammersmith Campus, London, UK
| | - M. Rems
- Department of General Surgery, Jesenice General Hospital, Jesenice, Slovenia
| | - S. Rizoli
- 0000 0001 2157 2938grid.17063.33Trauma and Acute Care Service, St Michael’s Hospital, University of Toronto, Toronto, Canada
| | - C. Rocha
- U.S. Naval Medical Research Unit N° 6, Callao, Peru
| | - B. Sakakushev
- General Surgery Department, Medical University, University Hospital St George, Plovdiv, Bulgaria
| | - M. Sanchez-Garcia
- 0000 0001 0671 5785grid.411068.aIntensive Care Department, Hospital Clínico San Carlos, Madrid, Spain
| | - N. Sato
- 0000 0004 0372 2033grid.258799.8Department of Primary Care and Emergency Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - H. A. Segovia Lohse
- 0000 0001 2289 5077grid.412213.7II Cátedra de Clínica Quirúrgica, Hospital de Clínicas, Universidad Nacional de Asunción, San Lorenzo, Paraguay
| | - G. Sganga
- 0000 0004 1760 4193grid.411075.6Department of Surgery, Catholic University of Sacred Heart, Policlinico A Gemelli, Rome, Italy
| | - B. Siribumrungwong
- 0000 0004 1937 1127grid.412434.4Department of Surgery, Faculty of Medicine, Thammasat University Hospital, Thammasat University, Pathum Thani, Thailand
| | - V. G. Shelat
- grid.240988.fDepartment of General Surgery, Tan Tock Seng Hospital, Tan Tock Seng, Singapore, Singapore
| | - K. Soreide
- 0000 0004 1936 7443grid.7914.bDepartment of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - R. Soto
- Department of Emergency Surgery and Critical Care, Centro Medico Imbanaco, Cali, Colombia
| | - P. Talving
- Department of Surgery, North Estonia Medical Center, Tallinn, Estonia
| | - J. V. Tilsed
- grid.417700.5Surgery Health Care Group, Hull and East Yorkshire Hospitals NHS Trust, Hull, UK
| | - J. F. Timsit
- 0000 0000 8588 831Xgrid.411119.dAPHP medical and infectious diseases ICU, Bichat Hospital, Paris, France
| | - G. Trueba
- 0000 0000 9008 4711grid.412251.1Institute of Microbiology, Biological and Environmental Sciences College, University San Francisco de Quito, Quito, Ecuador
| | - N. T. Trung
- Department of Molecular Biology, Tran Hung Dao Hospital, No 1, Tran Hung Dao Street, Hai Ba Trung Dist, Hanoi, Vietnam
| | - J. Ulrych
- 0000 0000 9100 9940grid.411798.21st Department of Surgery - Department of Abdominal, Thoracic Surgery and Traumatology, General University Hospital, Prague, Czech Republic
| | - H. van Goor
- 0000 0004 0444 9382grid.10417.33Department of Surgery, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - A. Vereczkei
- 0000 0001 0663 9479grid.9679.1Department of Surgery, Medical School University of Pécs, Pécs, Hungary
| | - R. S. Vohra
- 0000 0001 0440 1889grid.240404.6Nottingham Oesophago-Gastric Unit, Nottingham University Hospitals, Nottingham, UK
| | - I. Wani
- 0000 0001 0174 2901grid.414739.cDepartment of Surgery, Sheri-Kashmir Institute of Medical Sciences, Srinagar, India
| | - W. Uhl
- 0000 0004 0490 981Xgrid.5570.7Department of Surgery, St. Josef Hospital, Ruhr University Bochum, Bochum, Germany
| | - Y. Xiao
- 0000 0004 1759 700Xgrid.13402.34State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affilliated Hospital, Zhejiang University, Zhejiang, China
| | - K. C. Yuan
- 0000 0004 1756 1461grid.454210.6Trauma and Emergency Surgery Department, Chang Gung Memorial Hospital, Taoyuan City, Taiwan
| | - S. K. Zachariah
- Department of Surgery, MOSC Medical College Kolenchery, Cochin, India
| | - J. R. Zahar
- Infection Control Unit, Angers University, CHU d’Angers, Angers, France
| | - T. L. Zakrison
- 0000 0004 1936 8606grid.26790.3aDivision of Trauma and Surgical Critical Care, DeWitt Daughtry Family Department of Surgry, University of Miami, Miami, FL USA
| | - A. Corcione
- 0000 0004 1755 4122grid.416052.4Anesthesia and Intensive Care Unit, AORN dei Colli Vincenzo Monaldi Hospital, Naples, Italy
| | - R. M. Melotti
- grid.412311.4Anesthesiology and Intensive Care Unit, Sant’Orsola University Hospital, Bologna, Italy
| | - C. Viscoli
- 0000 0001 2151 3065grid.5606.5Infectious Diseases Unit, University of Genoa (DISSAL) and IRCCS San Martino-IST, Genoa, Italy
| | - P. Viale
- 0000 0004 1757 1758grid.6292.fInfectious Diseases Unit, Department of Medical and Surgical Sciences, Sant’ Orsola Hospital, University of Bologna, Bologna, Italy
| |
Collapse
|
10
|
Lopez Rincon A, Cantu C, Soto R, Shimoda S. Simulating the activation, contraction and movement of skeletal muscles using the bidomain model. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2016:6042-6045. [PMID: 28269630 DOI: 10.1109/embc.2016.7592106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A simulation of the muscle activation, contraction and movement is here presented. This system was developed based on the Bidomain mathematical model of the electrical propagation in muscles. This study shows an electrical stimuli input to a muscle and how this behave. The comparison between healthy subject and patient with muscle activation impairment is depicted, depending on whether the signal reaches a threshold. A 3D model of a bicep muscle and a forearm bone connected was constructed using OpenGL. This platform could be used for development of controllers for biomechatronic systems in future works. This kind of bioinspired model could be used for a better understanding of the neuromotor system.
Collapse
|
11
|
Pardo J, Murcia M, Soto R, Gonzalez J, Montemuiño S, Alastuey I, Jimenez E, Ortiz I. An Emulsion Containing Hyaluronic Acid and Chondroitin Sulfate for Prevention and Treatment of Radiation Dermatitis in Breast Cancer Patients - A Randomized Study. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
12
|
Claros M, Soto R, Rodríguez JJ, Cantú C, Contreras-Vidal JL. Novel compliant actuator for wearable robotics applications. Annu Int Conf IEEE Eng Med Biol Soc 2015; 2013:2854-7. [PMID: 24110322 DOI: 10.1109/embc.2013.6610135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In the growing fields of wearable robotics, rehabilitation robotics, prosthetics, and walking robots, variable impedance and force actuators are being designed and implemented because of their ability to dynamically modulate the intrinsic viscoelastic properties such as stiffness and damping. This modulation is crucial to achieve an efficient and safe human-robot interaction that could lead to electronically generate useful emergent dynamical behaviors. In this work we propose a novel actuation system in which is implemented a control scheme based on equilibrium forces for an active joint capable to provide assistance/resistance as needed and also achieve minimal mechanical impedance when tracking the movement of the user limbs. The actuation system comprises a DC motor with a built in speed reducer, two force-sensing resistors (FSR), a mechanism which transmits to the FSRs the torque developed in the joint and a controller which regulate the amount of energy that is delivered to the DC motor. The proposed system showed more impedance reduction, by the effect of the controlled contact forces, compared with the ones in the reviewed literature.
Collapse
|
13
|
Pardo-Masferrer J, Murcia M, Soto R, González J, Alastuey I, Montemuiño S, Ortiz I, Mena A. PO-0765: A randomized study with a hyaluronic acid and chondroitin sulfate lotion for radiodermitis in breast cancer patients. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)40757-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
14
|
Lambán LJ, Jódar J, Custodio E, Soler A, Sapriza G, Soto R. Isotopic and hydrogeochemical characterization of high-altitude karst aquifers in complex geological settings. The Ordesa and Monte Perdido National Park (Northern Spain) case study. Sci Total Environ 2015; 506-507:466-479. [PMID: 25437764 DOI: 10.1016/j.scitotenv.2014.11.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/06/2014] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
The Ordesa and Monte Perdido National Park, located in the Southern Pyrenees, constitutes the highest karst system in Western Europe. No previous studies regarding its geochemical and isotopic groundwater characterization are available in this area. This work presents the results of field and sampling campaigns carried out between July 2007 and September 2013. The groundwater presents high calcium bicarbonate contents due to the occurrence of upper Cretaceous and lower Paleocene-Eocene carbonate materials in the studied area. Other relevant processes include dissolution of anhydrite and/or gypsum and incongruent dissolution of Mg-limestone and dolomite. The water stable isotopes (δ(18)O, δ(2)H) show that the oceanic fronts from the Atlantic Ocean are responsible for the high levels of precipitation. In autumn, winter, and spring, a deuterium excess is found in the recharge water, which could be related to local atmospheric transport of low-altitude snow sublimation vapour and its later condensation on the snow surface at higher altitude, where recharge is mostly produced. The recharge zones are mainly between 2500m and 3200ma.s.l. The tritium content of the water suggests short groundwater transit times. The isotopic composition of dissolved sulphate points to the existence of regional fluxes mixed with local discharge in some of the springs. This work highlights the major role played by the altitude difference between the recharge and discharge zones in controlling the chemistry and the vertical variability of the isotopic composition in high-altitude karst aquifers.
Collapse
Affiliation(s)
- L J Lambán
- Geological Survey of Spain (IGME), Spain.
| | - J Jódar
- Department of Geotechnical Engineering and Geosciences, Technical University of Catalonia (UPC), Barcelona, Spain.
| | - E Custodio
- Department of Geotechnical Engineering and Geosciences, Technical University of Catalonia (UPC), Barcelona, Spain.
| | - A Soler
- Grup de Mineralogia Aplicada i Medi Ambient, Departament Cristal lografia Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona (UB), Spain.
| | - G Sapriza
- Global Institute for Water Security, National Hydrology Research Centre, Canada.
| | - R Soto
- Geological Survey of Spain (IGME), Spain.
| |
Collapse
|
15
|
de Godos I, Vargas VA, Guzmán HO, Soto R, García B, García PA, Muñoz R. Assessing carbon and nitrogen removal in a novel anoxic-aerobic cyanobacterial-bacterial photobioreactor configuration with enhanced biomass sedimentation. Water Res 2014; 61:77-85. [PMID: 24880959 DOI: 10.1016/j.watres.2014.04.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 04/22/2014] [Accepted: 04/29/2014] [Indexed: 05/24/2023]
Abstract
The carbon and nitrogen removal potential of an innovative anoxic-aerobic photobioreactor configuration operated with both internal and external recyclings was evaluated under different cyanobacterial-bacterial sludge residence times (9-31 days) during the treatment of wastewaters with low C/N ratios. Under optimal operating conditions, the two-stage photobioreactor was capable of providing organic carbon and nitrogen removals over 95% and 90%, respectively. The continuous biomass recycling from the settler resulted in the enrichment and predominance of rapidly-settling cyanobacterial-bacterial flocs and effluent suspended solid concentrations lower than 35 mg VSS L(-1). These flocs exhibited sedimentation rates of 0.28-0.42 m h(-1) but sludge volumetric indexes of 333-430 ml/g. The decoupling between the hydraulic retention time and sludge retention time mediated by the external recycling also avoided the washout of nitrifying bacteria and supported process operation at biomass concentrations of 1000-1500 mg VSS L(-1). The addition of additional NaHCO3 to the process overcame the CO2 limitation resulting from the intense competition for inorganic carbon between cyanobacteria and nitrifying bacteria in the photobioreactor, which supported the successful implementation of a nitrification-denitrification process. Unexpectedly, this nitrification-denitrification process occurred both simultaneously in the photobioreactor alone (as a result of the negligible dissolved oxygen concentrations) and sequentially in the two-stage anoxic-aerobic configuration with internal NO3(-)/NO2(-) recycling.
Collapse
Affiliation(s)
- I de Godos
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, C/Dr. Mergelina s/n, 47005 Valladolid, Spain; Aqualia Gestión Integral del Agua S.A., Avenida Camino de Santiago, 40, Madrid, Spain
| | - V A Vargas
- Center of Biotechnology, University of San Simon, Campus Universitario, s/n Cochabamba, Bolivia
| | - H O Guzmán
- Center of Biotechnology, University of San Simon, Campus Universitario, s/n Cochabamba, Bolivia
| | - R Soto
- Center of Biotechnology, University of San Simon, Campus Universitario, s/n Cochabamba, Bolivia
| | - B García
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, C/Dr. Mergelina s/n, 47005 Valladolid, Spain
| | - P A García
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, C/Dr. Mergelina s/n, 47005 Valladolid, Spain
| | - R Muñoz
- Department of Chemical Engineering and Environmental Technology, University of Valladolid, C/Dr. Mergelina s/n, 47005 Valladolid, Spain.
| |
Collapse
|
16
|
Abstract
We show that the Casimir effect can emerge in microswimmer suspensions. In principle, two effects conspire against the development of Casimir effects in swimmer suspensions. First, at low Reynolds number, the force on any closed volume vanishes, but here the relevant effect is the drag by the flow produced by the swimmers, which can be finite. Second, the fluid velocity and the pressure are linear on the swimmer force dipoles, and averaging over the swimmer orientations would lead to a vanishing effect. However, being that the suspension is a discrete system, the noise terms of the coarse-grained equations depend on the density, which itself fluctuates, resulting in effective nonlinear dynamics. Applying the tools developed for other nonequilibrium systems to general coarse-grained equations for swimmer suspensions, the Casimir drag is computed on immersed objects, and it is found to depend on the correlation function between the rescaled density and dipolar density fields. By introducing a model correlation function with medium-range order, explicit expressions are obtained for the Casimir drag on a body. When the correlation length is much larger than the microscopic cutoff, the average drag is independent of the correlation length, with a range that depends only on the size of the immersed bodies.
Collapse
Affiliation(s)
- C Parra-Rojas
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile and Theoretical Physics Division, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK
| | - R Soto
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile
| |
Collapse
|
17
|
Soto R, Fité C, Ramírez E, Bringué R, Cunill F. Equilibrium of the simultaneous etherification of isobutene and isoamylenes with ethanol in liquid-phase. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2013.11.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
18
|
Pardo J, Mena A, Prieto I, Soto R, Hernández M, Vara J, Pérez A. Radiation recall dermatitis in breast cancer patients (BCP). Observational study. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
19
|
Parra-Rojas C, Soto R. Active temperature and velocity correlations produced by a swimmer suspension. Phys Rev E Stat Nonlin Soft Matter Phys 2013; 87:053022. [PMID: 23767635 DOI: 10.1103/physreve.87.053022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Indexed: 06/02/2023]
Abstract
The agitation produced in a fluid by a suspension of microswimmers in the low Reynolds number limit is studied. In this limit, swimmers are modeled as force dipoles all with equal strength. The agitation is characterized by the active temperature defined, as in kinetic theory, as the mean square velocity, and by the equal-time spatial correlations. Considering the phase in which the swimmers are homogeneously and isotropically distributed in the fluid, it is shown that the active temperature and velocity correlations depend on a single scalar correlation function of the dipole-dipole correlation function. By making a simple medium-range order model, in which the dipole-dipole correlation function is characterized by a single correlation length k(0)(-1) it is possible to make quantitative predictions. It is found that the active temperature depends on the system size, scaling as L(4-d) at large correlation lengths L<<k(0)(-1), while in the opposite limit it saturates in three dimensions and diverges logarithmically with the system size in two dimensions. In three dimensions the velocity correlations decay as 1/r for small correlation lengths, while at large correlation lengths the transverse correlation function becomes negative at maximum separation r~L/2, an effect that disappears as the system increases in size.
Collapse
Affiliation(s)
- C Parra-Rojas
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile
| | | |
Collapse
|
20
|
Soto R, Russell I, Narendranath N, Power R, Dawson K. Estimation of Ethanol Yield in Corn Mash Fermentations Using Mass of Ash as a Marker. Journal of the Institute of Brewing 2012. [DOI: 10.1002/j.2050-0416.2005.tb00659.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
21
|
Pardo J, Murcia M, Vidal M, Alvarado A, Hernandez M, Soto R, Roldan R. Benefits of the Protocolized Use of a Specific Lotion with Urea for Irradiated Skin in Breast Cancer Patients before, during, and after Radiotherapy: A Pooled Analysis of Two Studies. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
22
|
Velasco I, Soto R, García R, Sepúlveda G. Unilateral Variation in the Origin of the Inferior Alveolar and Buccal Arteries: A Case Report. INT J MORPHOL 2011. [DOI: 10.4067/s0717-95022011000300044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
23
|
Pardo J, Murcia M, Alvarado A, Feltes N, Hernández M, Pérez A, Olivera J, Luna J, Vara J, Alvarez A, Soto R, Biete A. PREVENTING SKIN TOXICITY IN BREAST CANCER PATIENTS UNDERGOING RADIOTHERAPY WITH AN EMULSION CONTAINING HYALURONIC ACID, CHONDROITIN SULFATE, ALOE VERA, CARROT OIL, VITAMIN F AND VITAMIN E. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)71809-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
24
|
Rodriguez-Lopez P, Brito R, Soto R. Dynamical approach to the Casimir effect. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:031102. [PMID: 21517449 DOI: 10.1103/physreve.83.031102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 12/15/2010] [Indexed: 05/30/2023]
Abstract
Casimir forces can appear between intrusions placed in different media driven by several fluctuation mechanisms, either in equilibrium or out of it. Herein, we develop a general formalism to obtain such forces from the dynamical equations of the fluctuating medium, the statistical properties of the driving noise, and the boundary conditions of the intrusions (which simulate the interaction between the intrusions and the medium). As a result, an explicit formula for the Casimir force over the intrusions is derived. This formalism contains the thermal Casimir effect as a particular limit and generalizes the study of the Casimir effect to such systems through their dynamical equations, with no appeal to their Hamiltonian, if any exists. In particular, we study the Casimir force between two infinite parallel plates with Dirichlet or Neumann boundary conditions, immersed in several media with finite correlation lengths (reaction-diffusion system, liquid crystals, and two coupled fields with non-Hermitian evolution equations). The driving Gaussian noises have vanishing or finite spatial or temporal correlation lengths; in the first case, equilibrium is reobtained and finite correlations produce nonequilibrium dynamics. The results obtained show that, generally, nonequilibrium dynamics leads to Casimir forces, whereas Casimir forces are obtained in equilibrium dynamics if the stress tensor is anisotropic.
Collapse
Affiliation(s)
- P Rodriguez-Lopez
- Dept. de Física Aplicada I and GISC, Universidad Complutense, 28040 Madrid, Spain
| | | | | |
Collapse
|
25
|
Abstract
Cutaneous sinus tract on the head and neck area in a child may originate from dental disease. A high degree of clinical suspicion and complementary tests are often needed, as the diagnosis is usually not straight forward. Anatomical correlation is also useful in tracing the affected tooth or teeth. We present the case of a boy with a facial sinus tract that originated from periapical abscesses of maxillary molars.
Collapse
Affiliation(s)
- F Mardones
- Dermatology Department, Hospital Clínico, Universidad de Chile, Santiago, Chile.
| | | | | | | | | |
Collapse
|
26
|
|
27
|
Pardo J, Soto R, Hernández M, Murcia M. Can We Efficiently Evaluate Patient's Perceptions of Quality of Care in a Radiation Oncology Department and Identify the Areas for Quality Improvement? Report of a Prospective Survey among 1654 Patients. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
28
|
Brito R, Enríquez H, Godoy S, Soto R. Segregation induced by inelasticity in a vibrofluidized granular mixture. Phys Rev E Stat Nonlin Soft Matter Phys 2008; 77:061301. [PMID: 18643251 DOI: 10.1103/physreve.77.061301] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2007] [Revised: 04/17/2008] [Indexed: 05/26/2023]
Abstract
We investigate the segregation of a dense binary mixture of granular particles that only differ in their restitution coefficient. The mixture is vertically vibrated in the presence of gravity. We find a partial segregation of the species, where most dissipative particles submerge in the less dissipative ones. The segregation occurs even if one type of the particles is elastic. In order to have a complete description of the system, we study the structure of the fluid at microscopic scale (few particle diameters). The density and temperature pair distribution functions show strong enhancements with respect to the equilibrium ones at the same density. In particular, there is an increase in the probability that the more inelastic particles group together in pairs (microsegregation). Microscopically the segregation is buoyancy driven, by the appearance of a dense and cold region around the more inelastic particles.
Collapse
Affiliation(s)
- R Brito
- Departamento de Física, FCFM, Universidad de Chile, Casilla, Santiago, Chile
| | | | | | | |
Collapse
|
29
|
Martínez Lacasa J, Juan N, Juliá J, Rodríguez-Carballeira M, de Diego I, Soto R, Garau J. [Major closed-space bleeding in patients on anticoagulation with acenocoumarol (TAO) or non-fractionned heparin(HS): a case-control study]. An Med Interna 2008; 25:9-14. [PMID: 18377188 DOI: 10.4321/s0212-71992008000100003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To study the characteristics of major bleeding episodes into a closed space (BCS) of patients under chronic anticoagulation with either unfractionated heparin (HS) or coumadin (CM), and to determine the relationship, if any, of anticoagulation parameters (INR, PT and PTT) values at the time of bleeding with the episode. Finally, to determine risk factors for BCS and mortality in this population. METHODS Descriptive epidemiology of all cases of BCS seen in our hospital from 1995 to 2000 was obtained through the records and follow up visits of all patients under anticoagulation (HS or CM) during this period. A matched case-control study to determine risk factors for BCS was carried out. Cases and controls (1:2) were matched for age, gender, anticoagulant treatment and indication for anticoagulation. Cases were patients with a BCS while on anticoagulation (HS OR CM). Controls were patients under anticoagulation (HS or CM) without any bleeding episode during the study period that had anticoagulation parameter values (INR, PT or PTT) determined the very same day than the cases. RESULTS During the study period, 225 patients under anticoagulation were prospectively followed (75 cases and 150 controls) amid a total of 1650 patients under anticoagulation, for a 4.5% prevalence of BCS. Reasons for anticoagulation were: atrial fibrillation in 79 (35.3%), valvular heart disease in 59 (25.9%), pulmonary embolism or deep venous thrombosis in 48 (21.4%), dilated cardiomyopathy in 26 (11.6%) and vascular cerebral stroke in 13 (5.8%). Mean age of cases was 70.5 (SD 9.5) years and 41 (55%) were women, values similar to the controls. At the time of BCS 39 patients were on CM and 36 on HS. The mean INR value in the CM group at the time of the episode of BCS was 5.3 (SD + 7.5) while the PTT value was 2,25 (SD 0.95) in the HS group. There was previous antecedent bleeding in 24 (32%) cases. The most common sites of BCS were: muscular (40%), CNS (30.6%), retroperitoneal (18,6%) and articular (10.6%). Muscular (abdominal or thoracic wall) and retroperitoneal BCS were higher in the HS group (10 and 12 in the HS group versus 5 and 2 in the CM group, respectively; p < 0.0001). In contrast, CNS bleeding was commoner in the CM group (20 in CM versus 3 in HS; p < 0.001). BCS related mortality rate was 14.6% (11/75) and higher in the CM group (p = 0.04). Comparative analysis of the case-control study revealed that anticoagulation values in the CM group at the time of bleeding were within the recommended range in 38.5% of cases vs. 75% of the controls (p < 0.001). Also, there were significant differences in mean INR values between cases and controls (5.3 + 7.5 vs. 2.6 + 0.9, p < 0.029) In the HS group no differences were present in PTT values at the time of bleeding between cases and controls. In BCS cases, a previous bleeding episode was more frequent than in the control group (32% versus 1.3%, p < 0.001). Likewise, mortality was higher in cases (18,6%) than in controls (11.4%), p = 0.01. CONCLUSIONS In our study, the majority of patients under anticoagulation with CM had INR values above the recommended range at the time of BCS, in contrast with those on HS that had a PTT within the therapeutic range at the time of the BCS. A previous bleeding episode was an independent risk factor for a BCS episode. Bleeding was a late complication in the CM group and frequently in the CNS, while BCS was more frequently associated with muscular or retroperitoneal sites in the HS treated group. BCS related mortality was 15%. Close monitoring of INR is crucial to minimize bleeding complications.
Collapse
Affiliation(s)
- J Martínez Lacasa
- Servicios de Medicina Interna, Hospital Mutua de Terrasa, Terrasa, Barcelona.
| | | | | | | | | | | | | |
Collapse
|
30
|
Brito R, Marini Bettolo Marconi U, Soto R. Generalized Casimir forces in nonequilibrium systems. Phys Rev E Stat Nonlin Soft Matter Phys 2007; 76:011113. [PMID: 17677416 DOI: 10.1103/physreve.76.011113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 05/11/2007] [Indexed: 05/16/2023]
Abstract
In the present work, we propose a method to determine fluctuation-induced forces in nonequilibrium systems. These forces are the analog of the well-known Casimir forces, which were originally introduced in quantum field theory and later extended to the area of critical phenomena. The procedure starts from the observation that many nonequilibrium systems exhibit fluctuations with macroscopic correlation lengths, and the associated structure factors strongly depend on the wave vectors for long wavelengths; in some cases the correlations become long range, and the structure factors show algebraic divergences in the long-wavelength limit. The introduction of external bodies into such systems in general modifies the spectrum of these fluctuations, changing the value of the renormalized pressure, which becomes inhomogeneous. This inhomogeneous pressure leads to the appearance of a net force between the external bodies. It is shown that the force can be obtained from the knowledge of the structure factor of the homogeneous system. The mechanism is illustrated by means of a simple example: a reaction-diffusion equation, where the correlation function has a characteristic length. The role of this length in the Casimir force is elucidated.
Collapse
Affiliation(s)
- R Brito
- Departamento de Física Aplicada I and GISC, Universidad Complutense, 28040 Madrid, Spain
| | | | | |
Collapse
|
31
|
James S, Lyatskaya Y, Soto R, Nissen K, Mamon H, Killoran J, Chin L, Allen A. 2517. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
32
|
Allen A, Mentzer S, Sugarbaker D, Mamon H, Baldini E, Soto R, Rabin M, Janne P, Bueno R. 1035. Int J Radiat Oncol Biol Phys 2006. [DOI: 10.1016/j.ijrobp.2006.07.300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
33
|
Allen AM, Den R, Wong JS, Janne PA, Zurakowski D, Soto R, Bueno R, Sugarbaker DJ, Baldini EH. The influence of radiotherapy technique and dose on the patterns of failure for mesothelioma patients following extrapleural pneumonectomy. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7094 Background: Extrapleural pneumonectomy (EPP) is an effective treatment of pleural mesothelioma(MPM). We present a comparison of moderate-dose hemithoracic radiation (MDRT) to high-dose hemithoracic radiation (HDRT) following EPP for MPM. Methods: From 7/94 to 4/04, 39 pts underwent EPP and adjuvant radiotherapy (RT) at DFCI/BWH. From 1994–2002, MDRT, 30Gy to the hemithorax with boosts to the mediastinum or chest wall to 40–54 Gy was given, generally with concurrent chemotherapy (CT). Beginning in 2003, HDRT to 54 Gy as published by Yajnik et al (IJROBP 03’) was given with sequential CT. Results: Thirty-nine pts received RT following EPP. Median age was 59 yrs (range 44–77). Histology was epithelial in 25 (64%) pts and mixed/sarcomatoid in 14 (46%) pts. Twenty-four pts were treated with MDRT. 19 pts received concurrent platinum-based CT with MDRT. Three received cyclophosphomide, adriamycin and cisplatin (CDDP) CT prior to radiotherapy and 2 did not receive CT. 14 pts (39%) were treated with HDRT. 10/14 received sequential CDDP/gemcitabine, 4 received CDDP/pemetrexed and 1 patient received intraoperative CDDP. The median follow-up was 20 mos (range, 6–73 mos). Overall survival (OS) was 19 mos (95% CI, 14–24 mos). The median times to distant failure (DF) and local recurrence (LR) were 20 mos (95% CI, 14–26 mos) and 26 mos (95% CI, 16–36 mos), respectively. No significant differences in outcome between the two radiotherapy regimens were seen. One patient died of radiation-induced liver disease, one of pneumonitis and one of an MI. Four pts who received HDRT are alive and NED. On univariate and multivariate analysis mixed histology was predictive of DF and OS (p < .006; p < .004). Neither RT technique nor type of CT were predictive of LF, DF, or OS. The patterns of failure are in the table below. Conclusions: HDRT appears to limit in field local failures as compared to MDRT. Distant failure remains a significant challenge, with half of the patients experiencing distant failure. [Table: see text] No significant financial relationships to disclose.
Collapse
Affiliation(s)
- A. M. Allen
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - R. Den
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - J. S. Wong
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - P. A. Janne
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - D. Zurakowski
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - R. Soto
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - R. Bueno
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - D. J. Sugarbaker
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| | - E. H. Baldini
- Dana-Farber Cancer Institute, Boston, MA; Children’s Hospital of Boston, Boston, MA; Brigham and Women’s Hospital, Boston, MA
| |
Collapse
|
34
|
Abstract
We numerically investigate the behavior of driven noncohesive granular media and find that two fixed large intruder particles, immersed in a sea of small particles, experience, in addition to a short-range depletion force, a long-range repulsive force. The observed long-range interaction is fluctuation-induced and we propose a mechanism similar to the Casimir effect that generates it: The hydrodynamic fluctuations are geometrically confined between the intruders, producing an unbalanced renormalized pressure. An estimation based on computing the possible Fourier modes explains the repulsive force and is in qualitative agreement with the simulations.
Collapse
Affiliation(s)
- C Cattuto
- Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Compendio Viminale, Roma, Italy
| | | | | | | | | |
Collapse
|
35
|
Cartes C, Clerc MG, Soto R. van der Waals normal form for a one-dimensional hydrodynamic model. Phys Rev E Stat Nonlin Soft Matter Phys 2004; 70:031302. [PMID: 15524516 DOI: 10.1103/physreve.70.031302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2003] [Revised: 04/08/2004] [Indexed: 05/24/2023]
Abstract
Phase separation in a fluidized granular system is studied. We consider a one-dimensional hydrodynamic model that mimics a two-dimensional fluidized granular system with a vibrating wall and without gravity, which exhibits a phase separation. Close to the critical point, by means of an adiabatic elimination of the temperature, we deduce the van der Waals normal form, which is the equation that describes the slow dynamics of the system and predicts the qualitative behavior in different regions of parameters. This allows us to understand the origin of the effective viscosity and the spatial saturation at the onset of the bifurcation. The hydrodynamic model and van der Waals normal form exhibit a behavior similar to the one observed in molecular dynamics simulations.
Collapse
Affiliation(s)
- C Cartes
- Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile
| | | | | |
Collapse
|
36
|
Abstract
A phase separation of fluidized granular matter is presented. Molecular dynamics simulations of a system of grains in two spatial dimensions, with a vibrating wall and without gravity, exhibit the appearance, coalescence, and disappearance of bubbles. By identifying the mechanism responsible for the phase separation, we show that the phenomenon is analogous to the spinodal decomposition of the gas-liquid transition of the van der Waals model. We have deduced a macroscopic model for the onset of phase separation which agrees quite well with molecular dynamics simulations.
Collapse
Affiliation(s)
- M Argentina
- Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Casilla 487-3, Santiago, Chile
| | | | | |
Collapse
|
37
|
Lizano OG, Amador J, Soto R. [Mangrove characterization of Central America with remote sensors]. REV BIOL TROP 2001; 49 Suppl 2:331-40. [PMID: 15264547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023] Open
Abstract
Satellite images were used to study the mangrove distribution patterns in two different climatic regions of Central America: Gulf of Fonseca in Honduras-El Salvador and Sierpe-Térraba in Costa Rica. The Gulf of Fonseca has higher temperature and solar radiation, and lower precipitation, which can explain the higher structural development and species mixing of the Sierpe-Térraba mangrove. In the latter the transition between species or between heights in the same species is clear. The automatic classification made by the Geographic Information System (IDRISI) fits well the field mangrove distribution, but it was necessary to regroup some subdivisions that represent the same land use as identified by transects and an aerial video. Mixed species and clouds produced less satisfactory results in Sierpe-Térraba indicating a need for better satellite image resolution.
Collapse
Affiliation(s)
- O G Lizano
- Centro de Investigación en Ciencias del Mar y Limnología, Universidad de Costa Rica, San José, Costa Rica.
| | | | | |
Collapse
|
38
|
Soto R, Rubio I, Galina CS, Castillo E, Rojas S. Effect of pre- and post-partum feed supplementation on the productive and reproductive performance of grazing primiparous Brahman cows. Trop Anim Health Prod 2001; 33:253-64. [PMID: 11360803 DOI: 10.1023/a:1010370906515] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This experiment studied the combined effect of pre- and post-calving feed supplementation on the productive and reproductive performance of primiparous Brahman cows. The animals were 4 years old (420 kg live weight) and pregnant, and grazed rotationally on Stargrass (Cynodon nlemfuensis) pastures. Supplementation was given before and after (T1, n = 15), only before (T2, n = 15) or only after (T3, n = 16) calving, and there was an unsupplemented control (T4, n = 16). The supplement (1.5 kg/animal per day, 13.4 MJ digestible energy/kg dry matter and 20% crude protein) was given for 45 days before and/or after calving. Changes in body weight and body condition score and the productive behaviour of the calves were similar (p > 0.05) among treatments. The concentration of urea in the plasma was low in the control group (T4) before and after calving. The animals in all the groups had a poor reproductive performance. The percentage of cows in oestrus was higher (p < 0.05) in T1 (73.3%) than in T3 (37.5%). The interval from calving to conception (148.7 +/- 53.7 days) and the pregnancy rate (48.5%) were similar (p > 0.05) among the treatments. The level of supplementation offered before and/or after calving did not improve the pregnancy rate.
Collapse
Affiliation(s)
- R Soto
- Colegio Superior Agropecuario del Estado de Guerrero, Iguala, México
| | | | | | | | | |
Collapse
|
39
|
Soto R, Piasecki J, Mareschal M. Precollisional velocity correlations in a hard-disk fluid with dissipative collisions. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 64:031306. [PMID: 11580331 DOI: 10.1103/physreve.64.031306] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2001] [Indexed: 05/23/2023]
Abstract
Velocity correlations are studied in granular fluids, modeled by the inelastic hard sphere gas. Making a density expansion of the Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy for the evolution of the reduced distributions, we predict the presence of precollisional velocity correlations. They are created by the propagation through correlated sequences of collisions (ring events) of the velocity correlations generated after dissipative collisions. The correlations have their origin in the dissipative character of collisions, being always present in granular fluids. The correlations, that manifest microscopically as an alignment of the velocities of a colliding pair produce modifications of collisional averages, in particular, the virial pressure. The pressure shows a reduction with respect to the elastic case as a consequence of the velocity alignment. Good qualitative agreement is obtained for the comparison of the numerical evaluations of the obtained analytical expressions and molecular dynamics results that showed evidence of precollisional velocity correlations [R. Soto and M. Mareschal, Phys. Rev. E 63, 041303 (2001)].
Collapse
Affiliation(s)
- R Soto
- CECAM, ENS-Lyon, 46 Allée d'Italie, 69007 Lyon, France
| | | | | |
Collapse
|
40
|
Soto R, Schultetus RR. Using a spinal needle as an introducer for a spinal needle. Anesthesiology 2001; 95:814. [PMID: 11575569 DOI: 10.1097/00000542-200109000-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
41
|
Abstract
STUDY OBJECTIVES To compare the neuromuscular and hemodynamic effects of rocuronium and atracurium when administered during a desflurane-based anesthetic. DESIGN Randomized, double-blind clinical trial. PATIENTS 51 adult ASA physical status I and II patients scheduled for general surgical operations. SETTING University-based NCI-designated cancer center. INTERVENTIONS Patients received either 0.45 mg/kg rocuronium (n = 28) or atracurium 0.5 mg/kg (n = 23). Induction of anesthesia was accomplished by 2 microg/kg fentanyl intravenously (IV) and 1.5 mg/kg propofol IV and maintained by a nitrous oxide/oxygen desflurane anesthetic. MEASUREMENTS AND MAIN RESULTS A neuromuscular monitor was used at the adductor pollicis to monitor and record twitch response to train-of-four electrical stimulation. Baseline heart rate (HR) and blood pressure (BP) were measured and again at 2, 5, 10, and 15 minutes after muscle relaxant administration. Patients in the rocuronium group were found to have shorter times to 80%T(1)depression (109 +/- 53 vs. 135 +/- 47 sec), although those differences did not reach statistical significance (p = 0.07). Percent of the first twitch (T(1) ) was significantly lower in the patients receiving rocuronium at 60 seconds (53 +/- 24 vs. 73 +/- 27 sec; p = 0.006) and 90 seconds (25 +/- 22 vs. 47 +/- 29 sec; p = 0.003) than in the patients receiving atracurium. Duration was shorter in rocuronium-treated patients (25% T(1) recovery = 32 +/- 12 vs. 54 +/- 14 min; p < 0.001) than the patients receiving atracurium. Intubation scores were better at 60 seconds after muscle relaxant administration in the rocuronium group. No significant differences in HR or BP were seen between the patients in the two groups. CONCLUSIONS Rocuronium at a dose of 0.45 mg/kg possesses a fairly rapid onset of neuromuscular blockade and has short:intermediate duration of action when used with a desflurane anesthetic. This quality makes it a desirable drug for operations of relatively short duration. Rocuronium at a dose of 0.45 mg/kg has a faster onset and shorter duration than atracurium, at 0.5 mg/kg, when used with a desflurane anesthetic.
Collapse
Affiliation(s)
- R V Miguel
- Department of Anesthesiology, H. Lee Moffitt Cancer Center and Research Institute, University of South Florida College of Medicine, Tampa, FL 33612, USA.
| | | | | |
Collapse
|
42
|
Soto R, Mareschal M. Statistical mechanics of fluidized granular media: short-range velocity correlations. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 63:041303. [PMID: 11308834 DOI: 10.1103/physreve.63.041303] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2000] [Indexed: 05/23/2023]
Abstract
A statistical mechanical study of fluidized granular media is presented. Using a special energy injection mechanism, homogeneous fluidized stationary states are obtained. Molecular dynamics simulations and theoretical analysis of the inelastic hard-disk model show that there is a large asymmetry in the two-particle distribution function between pairs that approach and separate. Large velocity correlations appear in the postcollisional states due to the dissipative character of the collision rule. These correlations can be well-characterized by a state dependent pair correlation function at contact. It is also found that velocity correlations are present for pairs that are about to collide. Particles arrive at collisions with a higher probability that their velocities are parallel rather than antiparallel. These dynamical correlations lead to a decrease of the pressure and of the collision frequency as compared to their Enskog values. A phenomenological modified equation of state is presented.
Collapse
Affiliation(s)
- R Soto
- CECAM, ENS-Lyon, 46 Allée d'Italie, 69007 Lyon, France
| | | |
Collapse
|
43
|
Smith H, Dekaminsky R, Niwas S, Soto R, Jolly P. Prevalence and intensity of infections of Ascaris lumbricoides and Trichuris trichiura and associated socio-demographic variables in four rural Honduran communities. Mem Inst Oswaldo Cruz 2001; 96:303-14. [PMID: 11313635 DOI: 10.1590/s0074-02762001000300004] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Between January and March 1998, a cross-sectional survey was carried out in four rural communities in Honduras, Central America. We examined the prevalence and intensity of Ascaris lumbricoides and Trichuris trichiura infections among 240 fecal specimens, and the association between selected socio-demographic variables and infection for 62 households. The overall prevalence of A. lumbricoides and T. trichiura was 45% (95% CI 39.0-51.9) and 38% (95% CI 31.8-44.4) respectively. The most intense infections for Ascaris and Trichuris were found in children aged 2-12 years old. By univariate analysis variables associated with infections of A. lumbricoides were: number of children 2-5 years old (p=0.001), level of formal education of respondents (p=0.01), reported site of defecation of children in households (p=0.02), households with children who had a recent history of diarrhea (p=0.002), and the location of households (p=0.03). Variables associated with both A. lumbricoides and T. trichiura infection included: number of children 6-14 years old (p=0.01, p=0.04, respectively), ownership of a latrine (p=0.04, p=0.03, respectively) and coinfection with either helminth (p=0.001, p=0.001, respectively). By multivariate analysis the number of children 2-5 years living in the household, (p=0.01, odds ratio (OR)=22.2), children with a recent history of diarrhea (p=0.0, OR=39.8), and infection of household members with T. trichiura (p=0.02, OR=16.0) were associated with A. lumbricoides infection. The number of children 6-14 years old in the household was associated with both A. lumbricoides and T. trichiura infection (p=0.04, p=0.01, OR=19.2, OR=5.2, respectively).
Collapse
Affiliation(s)
- H Smith
- Department of Epidemiology and International Health, School of Public Health, University of Alabama, Birmingham, Alabama, USA
| | | | | | | | | |
Collapse
|
44
|
|
45
|
Soto R, Mareschal M. Nonlinear analysis of the shearing instability in granular gases. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 2000; 62:3836-3842. [PMID: 11088901 DOI: 10.1103/physreve.62.3836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2000] [Indexed: 05/23/2023]
Abstract
It is known that a finite-size homogeneous granular fluid develops a hydrodynamiclike instability when dissipation crosses a threshold value. This instability is analyzed in terms of modified hydrodynamic equations: first, a source term is added to the energy equation which accounts for the energy dissipation at collisions and the phenomenological Fourier law is generalized according to previous results. Second, a rescaled time formalism is introduced that maps the homogeneous cooling state into a nonequilibrium steady state. A nonlinear stability analysis of the resulting equations is done which predicts the appearance of flow patterns. A stable modulation of density and temperature is produced that does not lead to clustering. Also a global decrease of the temperature is obtained, giving rise to a decrease of the collision frequency and dissipation rate. Good agreement with molecular dynamics simulations of inelastic hard disks is found for low dissipation.
Collapse
Affiliation(s)
- R Soto
- CECAM, ENS-Lyon, 46 Allee d'Italie, 69007 Lyon, France
| | | |
Collapse
|
46
|
Ramirez R, Risso D, Soto R, Cordero P. Hydrodynamic theory for granular gases. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 2000; 62:2521-2530. [PMID: 11088733 DOI: 10.1103/physreve.62.2521] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2000] [Indexed: 05/23/2023]
Abstract
A granular gas subjected to a permanent injection of energy is described by means of hydrodynamic equations derived from a moment expansion method. The method uses as reference function not a Maxwellian distribution f(M) but a distribution f(0)=Phif(M), such that Phi adds a fourth cumulant kappa to the velocity distribution. The formalism is applied to a stationary conductive case showing that the theory fits extraordinarily well the results coming from our Newtonian molecular dynamic simulations once we determine kappa as a function of the inelasticity of the particle-particle collisions. The shape of kappa is independent of the size N of the system.
Collapse
Affiliation(s)
- R Ramirez
- Departamento de Fisica, Universidad de Chile, Santiago, Chile and CECAM, ENS-Lyon, 46 Allee d'Italie, 69007 Lyon, France
| | | | | | | |
Collapse
|
47
|
|
48
|
Armas-Merino R, Wolff C, Soto R, Jirón MI, Parraguez A. [Hepatitis C virus and resulting diseases]. Rev Med Chil 1999; 127:1240-54. [PMID: 10835742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
In 1989, the main agent causing non A non B hepatitis was identified as a RNA virus of the flavivirus family, with several serotypes, and was denominated virus C. At the present moment, the knowledge about the infection features and diseases that it causes has expanded thanks to the availability of reliable laboratory techniques to detect the antibody and the virus. The prevalence of infection and the frequency of serotypes varies in different regions of the world. Chile is a country with a low prevalence. The detection of infected blood in blood banks has reduced the spreading of the disease. Other means of infection such as the use of intravenous drugs, hemodialysis and transplantation have acquired greater importance. Sexual, maternal and familial transmission is exceptional. Infected people develop an acute hepatitis, generally asymptomatic. Eighty percent remain with a chronic hepatic disease, that can be mild or progressive, evolving to cirrhosis or hepatic carcinoma. Chronic hepatitis, closely resembling an autoimmune disease, can be caused by the virus. Alcohol intake increases viral activity causing severe hepatic diseases, refractory to treatments. Several non hepatic diseases are associated to hepatitis C virus infection such as essential mixed cryoglobulinemia, mesangiocapillary glomerulonephritis, porphyria cutanea tarda, dysglobulinemias and probably type 2 diabetes mellitus. The only available treatment is interferon, that is successful in a minority of patients, frequently causing a transient improvement. The use of Ribaravine associated to interferon improve the effectiveness of therapy. Liver transplantation is the only therapy for severe hepatic disease. The use of new antiviral drugs should improve the prognosis of the disease.
Collapse
Affiliation(s)
- R Armas-Merino
- Departamento de Medicina Occidente, Universidad de Chile
| | | | | | | | | |
Collapse
|
49
|
Terrazas A, Ferreira G, Lévy F, Nowak R, Serafin N, Orgeur P, Soto R, Poindron P. Do ewes recognize their lambs within the first day postpartum without the help of olfactory cues? Behav Processes 1999; 47:19-29. [DOI: 10.1016/s0376-6357(99)00045-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/1998] [Revised: 05/10/1999] [Accepted: 05/11/1999] [Indexed: 11/16/2022]
|
50
|
Renjifo B, Blackard JT, Klaskala W, Chaplin BR, Shah P, McLane MF, Barin F, Esparza J, Zelaya JE, Osmanov S, Soto R, Fernandez JA, Baum MK, Essex ME. HIV-1 subtype B in Honduras. Virus Res 1999; 60:191-7. [PMID: 10392727 DOI: 10.1016/s0168-1702(99)00014-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- B Renjifo
- Harvard School of Public Health, Boston, MA, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|