101
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Ovrutskiy S, Rehm K, Weber S, Nordmeyer S, Miera O, Photiadis J, Berger F. Colonization with Multiresistant Gram-Negative (MRGN) Bacteria in Paediatric Cardiovascular Surgery: Is It An Additional Risk Factor for Postoperative Morbidity? Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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102
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Gu YJ, Klimo O, Kumar D, Liu Y, Singh SK, Esirkepov TZ, Bulanov SV, Weber S, Korn G. Fast magnetic-field annihilation in the relativistic collisionless regime driven by two ultrashort high-intensity laser pulses. Phys Rev E 2016; 93:013203. [PMID: 26871179 DOI: 10.1103/physreve.93.013203] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Indexed: 11/07/2022]
Abstract
The magnetic quadrupole structure formation during the interaction of two ultrashort high power laser pulses with a collisionless plasma is demonstrated with 2.5-dimensional particle-in-cell simulations. The subsequent expansion of the quadrupole is accompanied by magnetic-field annihilation in the ultrarelativistic regime, when the magnetic field cannot be sustained by the plasma current. This results in a dominant contribution of the displacement current exciting a strong large scale electric field. This field leads to the conversion of magnetic energy into kinetic energy of accelerated electrons inside the thin current sheet.
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103
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Jirka M, Klimo O, Bulanov SV, Esirkepov TZ, Gelfer E, Bulanov SS, Weber S, Korn G. Electron dynamics and γ and e(-)e(+) production by colliding laser pulses. Phys Rev E 2016; 93:023207. [PMID: 26986432 DOI: 10.1103/physreve.93.023207] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 06/05/2023]
Abstract
The dynamics of an electron bunch irradiated by two focused colliding super-intense laser pulses and the resulting γ and e(-)e(+) production are studied. Due to attractors of electron dynamics in a standing wave created by colliding pulses the photon emission and pair production, in general, are more efficient with linearly polarized pulses than with circularly polarized ones. The dependence of the key parameters on the laser intensity and wavelength allows us to identify the conditions for the cascade development and γe(-)e(+) plasma creation.
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104
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Huber T, Baumgart J, Peterhans M, Weber S, Heinrich S, Lang H. Die verschwundene Lebermetastase – Neues Einsatzgebiet für die computerassistierte 3D-navigierte laparoskopische Leberesektion? ZEITSCHRIFT FUR GASTROENTEROLOGIE 2016; 54:40-3. [DOI: 10.1055/s-0041-107542] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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105
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Merschin D, Weber S, Peter L, Schüttrumpf JP. [Not Available]. ZEITSCHRIFT FUR ORTHOPADIE UND UNFALLCHIRURGIE 2015; 153:577-8. [PMID: 26670144 DOI: 10.1055/s-0035-1570275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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106
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Dubash TD, Hoffmann CM, Oppel F, Giessler KM, Weber S, Dieter SM, Hüllein J, Zenz T, Herbst F, Scholl C, Weichert W, Werft W, Benner A, Schmidt M, Schneider M, Glimm H, Ball CR. Phenotypic differentiation does not affect tumorigenicity of primary human colon cancer initiating cells. Cancer Lett 2015; 371:326-33. [PMID: 26679053 DOI: 10.1016/j.canlet.2015.11.037] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 11/27/2015] [Accepted: 11/27/2015] [Indexed: 02/07/2023]
Abstract
Within primary colorectal cancer (CRC) a subfraction of all tumor-initiating cells (TIC) drives long-term progression in serial xenotransplantation. It has been postulated that efficient maintenance of TIC activity in vitro requires serum-free spheroid culture conditions that support a stem-like state of CRC cells. To address whether tumorigenicity is indeed tightly linked to such a stem-like state in spheroids, we transferred TIC-enriched spheroid cultures to serum-containing adherent conditions that should favor their differentiation. Under these conditions, primary CRC cells did no longer grow as spheroids but formed an adherent cell layer, up-regulated colon epithelial differentiation markers, and down-regulated TIC-associated markers. Strikingly, upon xenotransplantation cells cultured under either condition equally efficient formed serially transplantable tumors. Clonal analyses of individual lentivirally marked TIC clones cultured under either culture condition revealed no systematic differences in contributing clone numbers, indicating that phenotypic differentiation does not select for few individual clones adapted to unfavorable culture conditions. Our results reveal that CRC TIC can be propagated under conditions previously thought to induce their elimination. This phenotypic plasticity allows addressing primary human CRC TIC properties in experimental settings based on adherent cell growth.
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107
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Flöck A, Weber S, Ferrari N, Fietz C, Graf C, Fimmers R, Gembruch U, Merz W. Beeinflussen geburtshilfliche Variablen die Konzentration des Neurotrophins BDNF im Serum Neugeborener und ihrer Mütter? Z Geburtshilfe Neonatol 2015. [DOI: 10.1055/s-0035-1566467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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108
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Auersperg AMI, von Bayern AMI, Weber S, Szabadvari A, Bugnyar T, Kacelnik A. Social transmission of tool use and tool manufacture in Goffin cockatoos (Cacatua goffini). Proc Biol Sci 2015; 281:rspb.2014.0972. [PMID: 25185997 PMCID: PMC4173672 DOI: 10.1098/rspb.2014.0972] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Tool use can be inherited, or acquired as an individual innovation or by social transmission. Having previously reported individual innovative tool use and manufacture by a Goffin cockatoo, we used the innovator (Figaro, a male) as a demonstrator to investigate social transmission. Twelve Goffins saw either demonstrations by Figaro, or 'ghost' controls where tools and/or food were manipulated using magnets. Subjects observing demonstrations showed greater tool-related performance than ghost controls, with all three males in this group (but not the three females) acquiring tool-using competence. Two of these three males further acquired tool-manufacturing competence. As the actions of successful observers differed from those of the demonstrator, result emulation rather than high-fidelity imitation is the most plausible transmission mechanism.
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109
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Merschin D, Peter L, Weber S, Schüttrumpf JP. [Not Available]. ZEITSCHRIFT FUR ORTHOPADIE UND UNFALLCHIRURGIE 2015; 153:466-7. [PMID: 26451858 DOI: 10.1055/s-0035-1564949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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110
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Weber S, Beilmann C, Shah C, Tashenov S. Compton polarimeter for 10-30 keV x rays. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2015; 86:093110. [PMID: 26429432 DOI: 10.1063/1.4931165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a simple and versatile polarimeter for x rays in the energy range of 10-30 keV. It uses Compton scattering in low-Z materials such as beryllium or boron carbide. The azimuthal distribution of the scattered x rays is sampled by an array of 12 silicon PIN diodes operated at room temperature. We evaluated the polarimetry performance using Monte-Carlo simulations and show experimental results.
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111
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Tresp C, Bienias P, Weber S, Gorniaczyk H, Mirgorodskiy I, Büchler HP, Hofferberth S. Dipolar Dephasing of Rydberg D-State Polaritons. PHYSICAL REVIEW LETTERS 2015; 115:083602. [PMID: 26340188 DOI: 10.1103/physrevlett.115.083602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Indexed: 06/05/2023]
Abstract
We experimentally study the effects of the anisotropic Rydberg interaction on D-state Rydberg polaritons slowly propagating through a cold atomic sample. We observe the interaction-induced dephasing of Rydberg polaritons at very low photon input rates into the medium. We develop a model combining the propagation of the two-photon wave function through our system with nonperturbative calculations of the anisotropic Rydberg interaction to show that the observed effect can be attributed to pairwise interaction of individual Rydberg polaritons at distances larger than the Rydberg blockade.
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112
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Weber S, Jud A, Landolt MA. Quality of life in maltreated children and adult survivors of child maltreatment: a systematic review. Qual Life Res 2015; 25:237-255. [PMID: 26245708 DOI: 10.1007/s11136-015-1085-5] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2015] [Indexed: 10/23/2022]
Abstract
PURPOSE To review data on health-related quality of life (HRQoL) in individuals with childhood trauma, including psychological maltreatment, physical maltreatment, sexual abuse, and neglect. METHODS The literature search was conducted with pre-defined keywords using the following electronic bibliographic databases: EMBASE, PubMed, MEDLINE, CINAHL, PsyINFO, PSYNDEX, and Cochrane Database of Systematic Reviews. Further databases were searched for relevant dissertations. Study selection and data extraction were completed by two independent reviewers. RESULTS The literature search yielded 1568 entries. Nineteen articles met all inclusion criteria and were retained for further analysis. Findings quite consistently showed significant negative associations between child maltreatment and both self- and proxy-rated HRQoL. Effect sizes range from small to large. Number of types of maltreatment and HRQoL were found to be negatively related. CONCLUSION Data on HRQoL for maltreated children are still rare. Studies often investigate adult survivors of child maltreatment. Considering HRQoL in children and adolescents who suffered maltreatment would allow the planning of effective interventions and the evaluation of treatments to improve HRQoL of these children.
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113
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Olivier H, Tyee TT, Mulbah J, Massaquoi M, Dahn B, Bengaly L, Bonnabry P, Cingria L, Khouiti MBM, Weber S, Riegger L, Deuble A, Wallis S, Comtesse P, Pittet D. Local production of alcohol based handrub solution (ABHS) in Liberia during the Ebola outbreak. Antimicrob Resist Infect Control 2015. [PMCID: PMC4474841 DOI: 10.1186/2047-2994-4-s1-p8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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114
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Wagner M, Weber S, El-Armouche A. Linking superinhibitory PLN mutations to CaMKII activation: a new arrhythmogenic mechanism in genetic DCM? Cardiovasc Res 2015; 107:5-6. [DOI: 10.1093/cvr/cvv163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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115
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Hegazy MA, Omar AS, Samir N, Moharram A, Weber S, Radwan WA. Amalgamation of procalcitonin, C-reactive protein, and sequential organ failure scoring system in predicting sepsis survival. Anesth Essays Res 2015; 8:296-301. [PMID: 25886324 PMCID: PMC4258970 DOI: 10.4103/0259-1162.143115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background: The clinical value of inflammatory biomarkers is still questionable. Aim of the Work: The aim of this study is to compare the clinical informative value of procalcitonin (PCT) and C-reactive protein (CRP) plasma concentration in the early detection of sepsis, as well as relating these biomarkers to other scoring systems. Patients and Methods: A total of 138 patients were enrolled in our study. All were subjected to PCT, CRP, and sequential organ failure assessment (SOFA) scores daily for 7 days (starting from admission day). Blood samples were collected before starting antibiotics, with 28 days follow-up and patients were assigned to three groups: Group I: SOFA 2-7, Group II: SOFA 8-10, and Group III: SOFA ≥11. Results: Underlying clinical diagnosis revealed pneumonia in 72 patients, urinary tract infections in eight, bloodstream infection in four, and other infections in 23, while infection could not be traced in 25 patients. The mean PCT was 3 ng/ml (95% confidence interval [CI]: 1-4), 12 ng/ml (95% CI: 9.1-14), and 19 ng/ml (95% CI: 16.3-22.3) in Groups I, II, and III, respectively, with a statistically significant difference in the mean PCT level among the three groups (P < 0.0001). On the other hand, CRP mean level did not significantly differentiate between the groups (147.1 mg/L in Group II, which was even higher than the level of Group III, 138.4 mg/L). Conclusion: PCT seems to do better than CRP in predicting the SOFA groups, giving its patronage display over a wide spectrum of insults.
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Weber S. Erhöhtes Risiko einer terminalen Niereninsuffizienz bei Verwandten ersten Grades mit Nierenersatztherapie. Urologe A 2015. [DOI: 10.1007/s00120-015-3850-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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117
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Levison J, Weber S, Cohan D. Reply to Kennedy et al. Clin Infect Dis 2015; 60:674. [DOI: 10.1093/cid/ciu855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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118
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Hoffmann RC, Kaloumenos M, Spiehl D, Erdem E, Repp S, Weber S, Schneider JJ. A microwave molecular solution based approach towards high-κ-tantalum(v)oxide nanoparticles: synthesis, dielectric properties and electron paramagnetic resonance spectroscopic studies of their defect chemistry. Phys Chem Chem Phys 2015; 17:31801-9. [DOI: 10.1039/c5cp05166e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transparent and dense dielectric Ta2O5 thin films are accessible via a solution based molecular approach.
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119
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Piadé JJ, Roemer E, Dempsey R, Hornig G, Deger Evans A, Völkel H, Schramke H, Trelles-Sticken E, Wittke S, Weber S, Schorp MK. Toxicological assessment of kretek cigarettes: Part 2: kretek and American-blended cigarettes, smoke chemistry and in vitro toxicity. Regul Toxicol Pharmacol 2014; 70 Suppl 1:S15-25. [PMID: 25497993 DOI: 10.1016/j.yrtph.2014.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 11/29/2014] [Accepted: 12/02/2014] [Indexed: 10/24/2022]
Abstract
Two commercial kretek cigarettes typical for the Indonesian market and a reference kretek cigarette were compared to the American-blended reference cigarette 2R4F by smoke chemistry characterization and in vitro cytotoxicity and mutagenicity assessments. Despite the widely diverse designs and deliveries of the selected kretek cigarettes, their smoke composition and in vitro toxicity data present a consistent pattern when data were normalized to total particulate matter (TPM) deliveries. This confirms the applicability of the studies' conclusions to a wide range of kretek cigarette products. After normalization to TPM delivery, nicotine smoke yields of kretek cigarettes were 29-46% lower than that of the 2R4F. The yields of other nitrogenous compounds were also much lower, less than would be expected from the mere substitution of one third of the tobacco filler by clove material. Yields of light molecular weight pyrolytic compounds, notably aldehydes and hydrocarbons, were reduced, while yields of polycyclic aromatic hydrocarbons were unchanged and phenol yield was increased. The normalized in vitro toxicity was lowered accordingly, reflecting the yield reductions in gas-phase cytotoxic compounds and some particulate-phase mutagenic compounds. These results do not support a higher toxicity of the smoke of kretek cigarettes compared to American-blended cigarettes.
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120
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Roemer E, Dempsey R, Hirter J, Deger Evans A, Weber S, Ode A, Wittke S, Schorp M. Toxicological assessment of kretek cigarettes Part 6: The impact of ingredients added to kretek cigarettes on smoke chemistry and in vitro toxicity. Regul Toxicol Pharmacol 2014; 70 Suppl 1:S66-80. [DOI: 10.1016/j.yrtph.2014.11.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 11/28/2014] [Accepted: 11/29/2014] [Indexed: 10/24/2022]
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121
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Peter L, Schüttrumpf JP, Merschin D, Weber S. [How satisfied are students with the range of teaching provided in Orthopedics and Trauma Surgery and what specific imagination do they have?]. ZEITSCHRIFT FUR ORTHOPADIE UND UNFALLCHIRURGIE 2014; 152:425-7. [PMID: 25313695 DOI: 10.1055/s-0034-1383212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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122
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Maschewsky-Schneider U, Pöche-Guckelberger I, Weber S, Ciupitu-Plath C. Evaluation des Gesamtprozesses von gesundheitsziele.de. DAS GESUNDHEITSWESEN 2014. [DOI: 10.1055/s-0034-1386957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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123
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Weber S, Greger M. Dynamische Kinetik der anaeroben Fermentation von fettigen Küchenabfällen mittels verschiedener Abfallvorbehandlungen für die Biogasproduktion. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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124
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Grünberger A, Weber S, Probst C, Wiechert W, Kohlheyer D. Optimizing Growth Performance of Corynebacterium glutamicumat the Single-Cell Level. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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125
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Levison J, Weber S, Cohan D. Breastfeeding and HIV-Infected Women in the United States: Harm Reduction Counseling Strategies. Clin Infect Dis 2014; 59:304-9. [DOI: 10.1093/cid/ciu272] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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