1
|
Peláez G, Vaugan J, Izquierdo P, Rubio H, García-Prada JC. Dynamics and Embedded Internet of Things Input Shaping Control for Overhead Cranes Transporting Multibody Payloads. Sensors (Basel) 2018; 18:s18061817. [PMID: 29867055 PMCID: PMC6022085 DOI: 10.3390/s18061817] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 05/23/2018] [Accepted: 05/30/2018] [Indexed: 11/30/2022]
Abstract
Input shaping is an Optimal Control feedforward strategy whose ability to define how and when a flexible dynamical system defined by Ordinary Differential Equations (ODEs) and computer controlled would move into its operative space, without command induced unwanted dynamics, has been exhaustively demonstrated. This work examines the issue of Embedded Internet of Things (IoT) Input Shaping with regard to real time control of multibody oscillatory systems whose dynamics are better described by differential algebraic equations (DAEs). An overhead crane hanging a double link multibody payload has been appointed as a benchmark case; it is a multibody, multimode system. This might be worst scenario to implement Input Shaping. The reasons can be found in the wide array of constraints that arise. Firstly, the reliability of the multibody model was tested on a Functional Mock-Up Interface (FMI) with the two link payload suspended from the trolley by comparing the experimental video tapping signals in time domain faced with the signals extracted from the multibody model. The FFTs of the simulated and the experimental signal contain the same frequency harmonics only with somewhat different power due to the real world light damping in the joints. The application of this approach may be extended to other cases i.e., the usefulness of mobile hydraulic cranes is limited because the payload is supported by an overhead cable under tension that allows oscillation to occur during crane motion. If the payload size is not negligible small when compared with the cable length may introduce an additional oscillatory mode that creates a multibody double pendulum. To give the insight into the double pendulum dynamics by Lagrangian methods two slender rods as payloads are analyzed dealing with the overhead crane and a composite revolute-revolute joint is proposed to model the cable of the hydraulic crane, both assumptions facilitates an affordable analysis. This allows developing a general study of this type of multibody payloads dynamics including its normal modes, modes ratios plus ranges of frequencies expected. Input Shapers were calculated for those multimodes of vibration by convolving Specified Insensitivity (SI) shapers for each mode plus a novel Direct SI-SI shaper well suited to reduce the computational requirements, i.e., the number of the shaper taps, to carry out the convolution sum in real time by the IoT device based on a single microcontroller working as the command generator. Several comparisons are presented for the shaped and unshaped responses using both the multibody model, the experimental FMI set-up and finally a real world hydraulic crane under slewing motion commanded by an analog Joystick connected by two RF modules 802.15.4 to the IoT device that carry out the convolution sum in real time. Input Shaping improves the performances for all the cases.
Collapse
Affiliation(s)
- Gerardo Peláez
- Department of Mechanical Engineering, Universidade de Vigo, 36310 Pontevedra, Spain.
| | - Joshua Vaugan
- Department of Mechanical Engineering, University of Louisiana at Lafayette, Lafayette, LA 70504, USA.
| | - Pablo Izquierdo
- Department of Mechanical Engineering, Universidade de Vigo, 36310 Pontevedra, Spain.
| | - Higinio Rubio
- Department of Mechanical Engineering, Universidad Carlos III de Madrid, 28903 Madrid, Spain.
| | | |
Collapse
|
2
|
Perdices EV, Medina-Cáliz I, Hernando S, Ortega A, Martín-Ocaña F, Navarro JM, Peláez G, Castiella A, Hallal H, Romero-Gómez M, González-Jiménez A, Robles-Díaz M, Lucena MI, Andrade RJ. Hepatotoxicity associated with statin use: analysis of the cases included in the Spanish Hepatotoxicity Registry. Rev Esp Enferm Dig 2014; 106:246-54. [PMID: 25075655 DOI: pmid/25075655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVES The hepatotoxic potential of statins is controversial. The objectives of this study were to describe the relative frequency of hepatotoxicity caused by statins and the phenotypes found in Spain. PATIENTS AND METHODS The incidence of hepatotoxicity attributed to statins in the Spanish Hepatotoxicity Registry (REH) were studied and compared with those attributed to other drugs. RESULTS Between April 1994 and August 2012, the REH included a total of 858 cases of which 47 (5.5 %) were attributed to statins. Of these, 16 were due to atorvastatin (34 %); 13 to simvastatin (27.7 %); 12 to fluvastatin (25.5 %); 4 to lovastatin (8.5 %) and 2 to pravastatin (4.3 %). Statins represented approximately half of the cardiovascular group which occupied 3rd place (10 %), after anti-infectious agents (37 %) and central nervous system drugs (14 %). The hepatocellular pattern was predominant, especially in the simvastatin group (85%), the cholestatic/mixed pattern was more frequent with fluvastatin (66 %) and had a similar distribution to atorvastatin. Patients with statin-induced toxicity were older (62 years versus 53 years, p < 0.001) and more often demonstrated anautoimmune hepatitis phenotype (8.5 % versus 1.4 %, p < 0.003). CONCLUSIONS Statins are not a common cause of hepatotoxicity in Spain. Atorvastatin is the statin involved in the greatest number of incidents. The liver injury pattern varies among the different statins. The hepatitis phenotype with autoimmune features appears to be a characteristic signature of statin-induced hepatotoxicity.
Collapse
|
3
|
García-Cortés M, Borraz Y, Lucena MI, Peláez G, Salmerón J, Diago M, Martínez-Sierra MC, Navarro JM, Planas R, Soria MJ, Bruguera M, Andrade RJ. [Liver injury induced by "natural remedies": an analysis of cases submitted to the Spanish Liver Toxicity Registry]. Rev Esp Enferm Dig 2009; 100:688-95. [PMID: 19159172 DOI: 10.4321/s1130-01082008001100004] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND toxic liver damage associated with the use of natural remedies is a growing health problem. OBJECTIVES to analyze the demographics, and clinical and epidemiological characteristics of patients developing liver injury related to these remedies. PATIENTS AND METHODS all DILI cases associated with the use of herbal remedies (HR) or dietary supplements (DS) submitted to the Spanish Registry were analyzed. Type of liver damage, severity, and outcome were specifically evaluated. RESULTS thirteen cases out of 521 DILI cases (2%) submitted to the Spanish Liver Toxicity Registry between 1994 and 2006 were related to HR/DS, which ranked as the 10th therapeutic group with a greater number of cases and above pain killers, anxiolytics, and antipsychotic drugs. Nine patients (69%) were female (mean age 45 years). Nine cases (69%) had jaundice at presentation. The predominating type of liver damage was hepatocellular (12; 92%), and 31% of cases exhibited the common features of hypersensitivity. Camellia sinensis (3, 23%) was the main causative herb, followed by Rhamnus purshianus and isoflavones (Fitosoja(R), Biosoja(R)) (2 cases each, 15%). Three cases (23%) were rechallenged with the offending product. CONCLUSIONS the incidence of hepatic damage related to HR/DS is not so rare, the most common profile of affected patients being a woman with acute hepatocellular hepatitis. Low suspicion regarding the putative role of herbs in hepatotoxicity makes diagnosis more difficult, and probably increases the incidence of inadvertent rechallenge in these patients.
Collapse
Affiliation(s)
- M García-Cortés
- Unidad de Hepatologia. Servicio de Aparato Digestivo. Malaga, Spain
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Fernández-Castañer A, García-Cortés M, Lucena MI, Borraz Y, Peláez G, Costa J, Anzola S, Salmerón J, Ávila S, Durán JA, Malcón de Dios A, Romero-Gómez M, Madrazo A, Muñoz-Yagüe T, Andrade RJ. Análisis de las causas, características y consecuencias de la reexposición al fármaco o compuesto responsable de un episodio de hepatotoxicidad. Rev esp enferm dig 2008; 100:278-84. [DOI: 10.4321/s1130-01082008000500006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
5
|
Pardo A, Quintero E, Barrios Y, Bruguera M, Rodrigo L, Vila C, Acero D, Guarner C, Pascual S, López L, Moreno R, Fábrega E, Andrade R, Peláez G, Santos J, Buti M, Torres M. Genotipo y expresión fenotípica de la hemocromatosis hereditaria en España. Gastroenterología y Hepatología 2004; 27:437-43. [PMID: 15388046 DOI: 10.1016/s0210-5705(03)70500-7] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The prevalence of C282Y homozygosity in patients with hereditary hemochromatosis (HH) has been reported to be markedly lower in the Mediterranean Basin than in northern Europe. In Spain, the available data are contradictory and limited to small series in specific regions. The objective of this study is to determine the prevalence of the 2 main HFE gene mutations in a large series of unrelated Spanish patients with HH from different geographical origins. PATIENTS AND METHOD The criteria for HH diagnosis were: repeat serum transferrin saturation index (> 45% plus C282Y homozygosity and/or hepatic iron index (> 1.9 of dry liver weight in non-cirrhotic patients or (> 4.1 in patients with liver cirrhosis. Cases in related individuals were excluded. Demographic data, clinical expression, iron parameters and HFE gene mutations (C282Y and H63D) were assessed in 222 patients. RESULTS A total of 83.3% of patients were C282Y homozygous and 5% were compound heterozygous (C282Y/H63D). No significant differences in phenotypic expression or in the frequency of C282Y homozygosity were observed between patients born in the North and South of Spain. CONCLUSION The genotypic and phenotypic expression of HH in Spain is very similar to that reported in Northern Europe. Thus, the genetic heterogeneity described in some Southern European regions cannot be considered a common feature to all countries of the Mediterranean Basin.
Collapse
Affiliation(s)
- A Pardo
- Hospital Universitario de Canarias, La Laguna, Tenerife, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
López-Torres E, Lucena MI, Andrade RJ, García Ruiz E, Fernández MC, Peláez G, Soria de la Cruz MJ, Pizarro A. [Tetrabamate-induced hepatotoxicity. Report of seven cases and literature review]. Gastroenterol Hepatol 2002; 25:589-93. [PMID: 12459120 DOI: 10.1016/s0210-5705(02)70321-x] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVES Analysis of all cases of tetrabamate (Atrium)-induced hepatotoxicity reported in the Andalusian Registry of drug-induced liver disorders and comparison with cases reported in the literature. MATERIAL AND METHOD Information was gathered in a structured protocol. The causal role of tetrabamate was estimated in each case using the diagnostic scale of the Council for International Organizations of Medical Sciences (CIOMS). RESULTS Of 327 cases of hepatotoxicity, 7 (2%) were due to tetrabamate. The mean age was 57 years (4 men). In 57% of the cases, the presenting symptom was tremor. The latency period was between 15 and 730 days. Liver damage was mainly cytolytic without signs of hypersensitivity. In all cases outcome was favorable with complete recovery between 60 and 120 days. The CIOMS diagnostic scale rated a causal role of tetrabamate as highly probable in six cases and as probable in one. CONCLUSION Tetrabamate can induce hepatotoxicity, probably due to an idiosyncratic metabolic mechanism. Because of this finding and the existence of more appropriate therapeutic alternatives, tetrabamate should not be used in the treatment of alcohol withdrawal.
Collapse
Affiliation(s)
- E López-Torres
- Servicio de Farmacología Clínica. Hospital Clínico Universitario. Facultad de Medicina. Málaga. Spain
| | | | | | | | | | | | | | | |
Collapse
|
7
|
|
8
|
García Cortés M, Andrade RJ, Lucena MI, Sánchez Martínez H, Fernández MC, Ferrer T, Martín-Vivaldi R, Peláez G, Suárez F, Romero-Gómez M, Montero JL, Fraga E, Camargo R, Alcántara R, Pizarro MA, García-Ruiz E, Rosemary-Gómez M. Flutamide-induced hepatotoxicity: report of a case series. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS : ORGANO OFICIAL DE LA SOCIEDAD ESPANOLA DE PATOLOGIA DIGESTIVA 2001; 93:423-32. [PMID: 11685939] [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] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
OBJECTIVE To evaluate the characteristics of flutamide induced hepatotoxicity. MATERIAL AND METHODS In this retrospective study we have analyzed all cases of flutamide hepatotoxicity submitted to the Andalucian Registry of drug-induced liver disease. Data were collected using a structured reporting form. Causality assessment was performed using two clinical scales: the standard CIOMS scale and the recently developed María and Victorino scale. RESULTS Nine of 185 patients (4.9%) were identified. In 8 male patients, mean age 75 years (range 65-83), flutamide was indicated for palliative therapy of disseminated prostatic carcinoma, and in one young female (14 years) was given for the treatment of facial hirsutism. The mean duration of the flutamide therapy was 151 days (range 4-443). All patients presented with overt liver injury, the most frequent features being asthenia, anorexia, weight loss, nausea, vomiting and jaundice. No patient showed hypersensitivity features. In two patients (22%) the hepatic damage evolved to fulminant liver failure, one of them undergoing a liver transplantation and the other subsequently died. An additional patient died of a non-hepatic related cause when his liver function was improving. Causality assessment by the two clinical scales did not exclude any case, but the two patients who died where classified as unlikely by the María and Victorino scale. CONCLUSIONS Flutamide can induce severe acute hepatitis, probably due to an idiosyncratic metabolic mechanism. Liver tests monitoring should probably be mandatory during the first months of flutamide therapy and the drug withdrawn if transaminases began to increase.
Collapse
Affiliation(s)
- M García Cortés
- Unit of Hepatology, Digestive and Clinical Pharmacology Services, University Hospital Virgen de la Victoria, Málaga, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Vega JL, Peláez G, Suárez JF, Casado M, Abad A, Esteban J. [Dysphagia as the presenting symptom of tetanus]. Rev Esp Enferm Dig 1999; 91:859-60. [PMID: 10619918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
|
10
|
Suárez Crespo JF, Vega JL, Casado M, Torres M, Peláez G, Esteban J. [Takayasu disease and Crohn disease. Coincidental relationship?]. Gastroenterol Hepatol 1998; 21:419. [PMID: 9844284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
|
11
|
Andrade RJ, Lucena MI, Fernández-Sánchez MC, Peláez G. [Hepatotoxicity caused by paracetamol at therapeutic doses]. Med Clin (Barc) 1997; 109:317-8. [PMID: 9379757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
12
|
Nogueira JM, Belda R, Rodríguez-Arias C, Peláez G, Esteban J, Verdejo G, Abad A, Osorio M. [Leiomyosarcoma of the duodenal bulb. Presentation of a case with digestive hemorrhage and abdominal mass]. Rev Esp Enferm Dig 1991; 80:143-4. [PMID: 1790083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
13
|
Cicero R, Escobar A, Ramírez E, Celis ME, Amezcua ME, de la Escosura G, Erusa G, Peláez G. [Immunologic study of alcoholism with advanced pulmonary tuberculosis]. GAC MED MEX 1982; 118:449-54. [PMID: 7166228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
|