703 research outputs found
A. Louis Dippel, M.D.
No full textDr Dippel was born in Ahlinger, Texas in 1901. Dr Dippel received both his B.A and M.S from the University of Texas in 1924. Dr Dippel received his M.D. in 1928 from the University of Texas Medical Branch in Galveston. Dr Dippel was Instructor and Associate Professor in Obstetrics at Johns Hopkins University from 1934-1940. Dr Dippel was an Associate Professor of Obstetrics at the University of Minnesota from 1940 to 1943. Dr Dippel was Professor and Head of the Department of Obstetrics and Gynecology at the University from 1943-1944. Dr Dippel returned to Texas as Professor of Obstetrics at Baylor University Medical College and Lecturer at University of Texas Medical School at Galveston and later the Chief-of-Staff at the Hermann Hospital in Houston until his retirement iin 1977. Dr Dippel died in 1991
On single-crystal total scattering data reduction and correction protocols for analysis in direct space. Corrigendum
No full textThe name of the third author of the article by Koch et al. [Acta Cryst. (2021).A77, 611–636] is corrected.The name of the third author in the article by Koch et al.(2021) is incorrectly given as Yiu Liu. The correct name is YuLiu, as given above.ReferencesKoch, R. J., Roth, N., Liu, Y., Ivashko, O., Dippel, A.-C., Petrovic, C.,Iversen, B. B., v. Zimmermann, M. & Bozin, E. S. (2021). Acta Cryst.A77, 611–636
Links oder rechts? Die ideologische Selbstverortung von Wähler:innen und ihre Wahrnehmung von Parteien in Deutschland - Daten & Code
No full textThis project contains the code of the analyses and figures of the following publication:
Dippel, A. S., Hetzer, L., & Burger, A. M. (2022). Links oder rechts? Die ideologische Selbstverortung von Wähler:innen und ihre Wahrnehmung von Parteien in Deutschland. easy social sciences, 67, https://doi.org/10.15464/EASY.2022.0
Links oder rechts? Die ideologische Selbstverortung von Wähler:innen und ihre Wahrnehmung von Parteien in Deutschland - Daten & Code
No full textThis project contains the code of the analyses and figures of the following publication:
Dippel, A. S., Hetzer, L., & Burger, A. M. (2022). Links oder rechts? Die ideologische Selbstverortung von Wähler:innen und ihre Wahrnehmung von Parteien in Deutschland. easy social sciences, 67, https://doi.org/10.15464/EASY.2022.0
Aging stability of Li2FeSiO4 polymorphs in LiPF 6 containing organic electrolyte for lithium-ion batteries
No full textThe aging stability of several Li2FeSiO4 (LFS) polymorphs in LiPF6-based organic carbonate solvent electrolyte at elevated temperature was investigated. The different LFS polymorphs were obtained by hydrothermal reaction and subsequent annealing at different temperatures. In addition, a carbon-coated sample was prepared. The samples were aged separately from each other at 60 °C in LiPF6-based organic electrolyte for 10 days and analyzed afterwards. The characterization of the residual powder by X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDX) reveals a different aging behavior depending on the structure of the LFS polymorph. This influence of the polymorph on the stability of LFS powder against HF was confirmed by investigations of the aged electrolyte by nuclear magnetic resonance (NMR) spectroscopy and ion chromatography (IC). © 2013 Elsevier Ltd. All rights reserved
Risk factors for lameness in freestall-housed dairy cows across two breeds, farming systems, and countries
No full textLameness poses a considerable problem in modern dairy farming. Several new developments (e.g., herd health plans) strive to help farmers improve the health and welfare of their herd. It was thus our aim to identify lameness risk factors common across regions, breeds, and farming systems for freestall-housed dairy cows. We analyzed data from 103 nonorganic and organic dairy farms in Germany and Austria that kept 24 to 145 Holstein Friesian or Fleckvieh cows in the milking herd (mean = 48). Data on housing, management, behavior, and lameness scores for a total of 3,514 cows were collected through direct observations and an interview. Mean lameness prevalence was 34% (range = 0-81%). Data were analyzed applying logistic regression with generalized estimating equations in a split-sample design. The final model contained 1 animal-based parameter and 3 risk factors related to lying as well as 1 nutritional animal-based parameter, while correcting for the significant confounders parity and data subset. Risk for lameness increased with decreasing lying comfort, that is, more frequent abnormal lying behavior, mats or mattresses used as a stall base compared with deep-bedded stall bases, the presence of head lunge impediments, or neck rail-curb diagonals that were too short. Cows in the lowest body condition quartile (1.25-2.50 for Holstein Friesian and 2.50-3.50 for Fleckvieh) had the highest risk of being lame. In cross-validation the model correctly classified 71 and 70% of observations in the model-building and validation samples, respectively. Only 2 out of 15 significant odds ratios (including contrasts) changed direction. They pertained to the 2 variables with the highest P-values in the model. In conclusion, lying comfort and nutrition are key risk areas for lameness in freestall-housed dairy cows. Abnormal lying behavior in particular proved to be a good predictor of lameness risk and should thus be included in on-farm protocols. The study is part of the European Commission's Welfare Quality (R) project
Training veterinarians and agricultural advisers on a novel tool for tail biting prevention
No full textINTRODUCTION: Many health and welfare problems in modern livestock production are multifactorial problems which require innovative solutions, such as novel risk assessment and management tools. However, the best way to distribute such novel - and usually complex - tools to the key applicants still has to be discussed. MATERIALS AND METHODS: This paper shares experiences from distributing a novel tail biting prevention tool ('SchwIP') to 115 farm advisers and 19 veterinarians in 23 one-day workshops. Participants gave written and oral feedback at the end of the workshops, which was later analysed together with the number of farms they had visited after the workshops. Workshop groups were categorised into groups showing (a) HIGH, (b) INTermediate or (c) LOW levels of antagonism against SchwIP or parts of it during workshop discussions. RESULTS: Group types did not significantly differ in their evaluation of knowledge transfer. However, HIGH group members evaluated the on-farm usability of the tool significantly lower in the workshop feedback and tended to visit fewer farms. CONCLUSIONS: As antagonistic discussion can influence workshop output, future workshop leaders should strive for basic communication training as well as some group leadership experience before setting up and leading workshops
Aging of Li2FeSiO4 cathode material in fluorine containing organic electrolytes for lithium-ion batteries
No full textThe stability vs. aging of Li2FeSiO4 (LFS) cathode material in fluorine-based electrolytes, especially at elevated temperature, was studied in this work. The LFS powder was initially synthesized using a hydrothermal route and then aged at 60 °C for 40 days in LiPF6 and LiBF4-based electrolytes. The residual powder and the electrolyte were investigated afterwards. In the case of LiPF6, a structural and compositional change of LFS to Li2SiF6 was observed by XRD. SEM images confirmed that this change led to a morphology change of the aged material. XPS, EDX and ICP-OES measurements showed a large increase of fluorine content inside the residual powder. NMR investigations indicated an accelerated decomposition of electrolyte in the presence of LFS compared to the electrolyte aged without LFS. Our results suggest a degradation of LFS to Li2SiF6 in the fluorine-based electrolyte at elevated temperatures while the electrolyte decomposition is accelerated. © 2011 Elsevier Ltd
Diagnose eines Zentralarterienverschlusses (ZAV) ohne Funduskopie
No full textZusammenfassung Der retinale Zentralarterienverschluss stellt mangels etablierter evidenzbasierter Therapie eine der wenigen bisher ungelösten ophthalmologischen Probleme dar. Ein vielversprechender kurativer Ansatz ist die intravenöse Fibrinolyse mit dem Ziel der raschen Wiederherstellung der retinalen Perfusion. Die aktuelle Studienlage empfiehlt eine Therapieeinleitung innerhalb von 4,5 h. Dieses Fenster wird aufgrund von Verzögerungen in der Diagnostik (z. B. der Zeitverlust bis zur augenärztlichen Untersuchung) und der anschließenden Prozessierung der Patienten (Weiterleitung in ein spezialisiertes Zentrum) häufig verpasst. In dieser Arbeit stellen die Autoren ein differenzialdiagnostisches Hilfsmittel in Form eines Frage- und Untersuchungsbogens vor, mit dessen Hilfe die Zeit bis zur möglichen Therapieeinleitung deutlich verkürzt werden könnte.Abstract In the field of ophthalmology, central retinal artery occlusion is still one of the unsolved pathologies, as there is no widely accepted evidence-based therapeutic concept. Meta-analysis suggests that intravenous fibrinolysis might help to improve the outcome if performed within the first 4.5 hours after symptom onset. However, this short window of opportunity is often missed due to delays during diagnostic testing (e.g. time elapsed before performance of an ophthalmological examination) or patient-processing (referring the patient to a specialized medical facility). This article presents a diagnostic tool in the form of a simple questionnaire, comprising a medical history and examinations, which could help to minimize the time required to initiate the appropriate treatment
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