116 research outputs found
Relationship between degree of anemia and blood gases in cattle with theileriosis
No full textAltug, Nuri/0000-0001-5805-0340This study was conducted to determine the relationship between the degrees of anemia and blood gases in cattle with theileriosis. It included 28 cattle with theileriosis and 7 healthy animals as the control group. The cattle with theileriosis were divided into 4 groups according to their hematocrit (Hct) values: cattle with Hct of >26 were considered as nonanemic (Group 1), Hct of 20-26 as mildly anemic (Group 2), Hct of 14-19 as moderately anemic (Group 3), and Hct of 10-13 as severely anemic (Group 4). The PCO2, HCO3, and TCO2 levels in the study groups were lower than those of the control group. Moreover, reductions in HCO3 and TCO2 concentrations were significant only in the severely anemic group. Similarly, the lowest PCO2 levels were also detected in the severely anemic group. There were no significant differences in the SO 2 levels between the control and study groups. On the other hand, the increase was significant in the severely anemic group when compared to Groups 1 and 2. The results seemed to indicate the trend of uncompensated metabolic acidosis in theileriosis cases with severe anemia; thus, veterinary surgeons should bear this in mind when evaluating the prognosis for such cases.Yuzuncu Yil University Scientific Research Projects ChairmanshipYuzuncu Yil University [2010-SBE-YL150]This study was summarized from the MSc thesis of the first author and supported by the Yuzuncu Yil University Scientific Research Projects Chairmanship (Project No: 2010-SBE-YL150)
Entrepreneurial Attitudes and Behaviours in Small-Scale Dairy Farms in Turkey
No full textDairy farms are quite important to transform Turkish livestock sector into being more productive and competitive in the process of EU integration. The purpose of this study is to determine the socio economic features of dairy farms in Turkey and to determine producers’ individual and management goals in the future. In addition, farmers’ level of participation related to the attitudes, behaviors and subjective norm components are determined and an entrepreneurship index is constructed to determine the factors that influence social economic characteristics of entrepreneurship. The material of the study consists of 167 surveys obtained from Cattle Breeders Association of Turkey in 17 cities through the postal mail in 2007. A five “Likert Scale” was used to determine behaviors and attitudes of farmers as well as descriptive statistics. In each category, factor weights were calculated based on factor analyses. Then, the social economic factors that determine entrepreneurship index were estimated using “Logistic Regression”. The results indicate that the primary goals of farmers are high income, enjoying the job, better life conditions, earning respect, utilizing the resources, better image, and producing high quality products. When entrepreneurial behaviors and attitudes are examined it was found that most of the farmers aim at earning high profit as a main goal and value dairy milk farming. The logistic regression shows that the factors that determine entrepreneur index are age, experience and area of feed crops.Small-Scale Dairy Farms, Entrepreneur Index, Theory of Planned Behavior, Turkey, Consumer/Household Economics, Livestock Production/Industries, Production Economics, Q12, Q16,
Review essay on David Laibman, Deep History: A Study in Social Evolution and Human Potential
No full textWhile historical materialism and evolutionism provide similar explanations and ideas regarding the cause of long-term social change, the two theories are rarely used in conjunction with one another. In Deep History,the author David Laibman addresses some of the standard questions of evolutionary social theory and attempts to bridge the two concepts, by showing that historical and materialist explanations are present in both Marxian and evolutionary interpretations of history. His goal: develop a Marxist theory of history from an evolutionist perspective, and surmount the traditional confines of historical materialism, so as to embrace evolutionary conceptions in explaining social change. However, the unbalanced research methodology limits the reach and depth of Laibman’s contribution. The two main shortcomings of his work are discussed in the following sections: The Audience Problem and The Evolutionary Problem
Explorations on Beyond Endoscopy
No full textIn this thesis we provide a description of the first paper on Beyond Endoscopy by Altug and explain how to generalize to totally real fields, based on a joint work of the author with Melissa Emory, Debanjana Kundu and Tian An Wong, and is a work in preparation. This part is mostly expository, and we refer the reader to the relevant paper.
Furthermore, we prove a conjecture of Arthur. In his original paper on Beyond Endoscopy, Langlands provides a formula for certain product of orbital integrals in GL(2, Q), subsequently used by Altug to manipulate the regular elliptic part of the trace formula with the goal of isolating the contribution of the trivial representation. Arthur predicts this formula should coincide with a product of polynomials associated to zeta functions of orders constructed by Zhiwei Yun. We prove this is the case by finding the explicit polynomials and recovering the original formula from them.
We also explain how some aspects of the strategy used can be interpreted as problems of independent interest and importance of their own.
En esta tesis damos una descripción del primer articulo sobre Más Alla de la Endoscopía por Altug y explicamos como generalizarlo a campos totalmente reales, basados en un trabajo conjunto con Melissa Emory, Debanjana Kundu y Tian An Wong, y él cuál sigue en estado de preparación. Esta parte es mayormente una exposición y referimos al lector al artículo relevante.
Además, demostramos una conjetura de Arthur. En su artículo original sobre Más Allá de la Endoscopía, Langlands da una fórmula para cierto productos de integrales de órbita en GL(2, Q), subsecuentemente utilizadas por Altug para manipular la parte regular eliptica de la formula de traza con el objectivo de aislar la contribución de la representación trivial. Arthur predice que esta formula coincide con un producto de polinomios asociados a funciones zeta de órdenes construidos por Zhiwei Yun. Demostramos que esto es cierto mediante hallar los polinomios explicitos y recuperamos la formula original a partir de ellos.
Más aún, también explicamos como algunos aspectos de esta estrategia pueden ser interpretados como problemas de interés e importancia independiente.Ph.D
P Wave Dispersion Increases during Hemodialysis Sessions
No full textBackground/Aims: Atrial fibrillation (AF) is common among hemodialysis (HD) patients and is associated with high mortality. P wave dispersion (PWD) is a noninvasive electrocardiographic marker of paroxysmal AF. Our aim was to evaluate the effect of HD session on PWD. Methods: Twenty-five patients (mean age 63 years, 10 males) with sinus rhythm and undergoing chronic HD treatment were included. Blood samples were drawn and 12-lead electrocardiograms were recorded immediately before HD session, at the 2nd hour during HD and at the end of the HD session. The difference between maximum and minimum P wave durations was calculated as PWD. Results: PWD significantly increased during HD sessions compared with predialysis values (41 +/- 12 vs. 21 +/- 10 ms, respectively, p < 0.001), then decreased to a value of 24 +/- 7 ms at the completion of HD, which was not significantly different from the predialysis values. PWD during HD was significantly correlated with predialysis systolic and diastolic blood pressure (r = 0.42, p = 0.037, and r = 0.59, p = 0.002, respectively) and predialysis serum potassium level (r = 0.44, p = 0.031). Linear regression model revealed that predialysis diastolic blood pressure (p = 0.002), predialysis serum potassium level (p = 0.037) and the amount of ultrafiltration (p = 0.048) were the significant predictors of prolonged PWD during HD. Conclusion: PWD increases significantly during HD sessions. This may increase the risk of AF episodes during HD. High diastolic blood pressure and serum potassium level before HD and ultrafiltration amount may predict prolonged PWD during HD. Copyright (C) 2009 S. Karger AG, Base
An unusual cause of gastric perforation in childhood: trichobezoar (Rapunzel syndrome). A case report
No full textTrichobezoars are hair balls found in the stomach and formed following trichitillomania and trichopaghia. Rapunzel syndrome is a rare condition in which the presence of giant trichobezoars causes mechanical obstruction. To date, only two cases of stomach perforation caused by trichobezoars have been reported among pediatric patients. We report a 14-year-old female patient who experienced nausea, vomiting and severe abdominal pain for 1 month. Physical examination revealed diffuse abdominal distension. Palpation detected a mobile and sensitive mass, 15 x 15 cm , which filled the upper quadrant. Urgent surgery revealed that the stomach was perforated by the trichobezoar ball. This trichobezoar mass was totally excised by expanding the perforation area. Conclusion This is the reported third case of gastric perforation caused by trichobezoar in a pediatric patient. Among acute abdominal cases, gastric perforation should remain a possibility in differential diagnosis
Thermal destabilization of collagen matrix hierarchical structure by freeze/thaw
No full textThis study aims to characterize and understand the effects of freezing on collagen structures and functionality. Specifically, thermodynamic destabilization of collagen at molecular and fibril-levels by combination of low temperatures and freezing were experimentally characterized using modulated differential scanning calorimetry. In order to delineate the effects of sub-zero temperature and water-ice phase change, we hypothesized that the extent of destabilization can be determined based on post-thaw heat induced thermal denaturation of collagen. It is found that thermal denaturation temperature of collagen in hydrogel decreases by 1.4-1.6°C after freeze/thaw while no such decrease is observed in the case of molecular solution. The destabilization is predominantly due to ice formation. Exposure to low temperatures in the absence of ice has only minimal effect. Calorimetry measurements combined with morphological examination of collagen matrices by scanning electron microscopy suggest that freezing results in destabilization of collagen fibrils due to expansion of intrafibrillar space by ice formation. This fibril-level damage can be alleviated by use of cryoprotectant DMSO at concentrations as low as 0.5 M. A theoretical model explaining the change in collagen post-thaw thermal stability by freezing-induced fibril expansion is also proposed. ©2016 Ozcelikkale, Han.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
The Sensitivity of Global Structural Parameters for Unreinforced Masonry Buildings Subjected to Simulated Ground Motions
No full textThis research performs a parametric study based on Equivalent Single Degree of Freedom (ESDOF) models for simplified seismic analysis of unreinforced masonry (URM) structures. This is a necessary action due to the fact that it is not affordable to model and analyze populations of masonry buildings by using detailed continuum-based models during regional seismic damage and loss estimation studies. Hence, this study focuses on the sensitivity of major structural parameters of a selected idealized hysteretic model for URM buildings. The numerical models are subjected to region-specific simulated ground motion time histories generated using validated seismological parameters. The variations in dynamic analysis results are evaluated using statistical tools for major structural and seismological parameters. The results reveal that the strength factor is the most influential structural parameter, whereas magnitude and distance have a significant impact on the response of idealized URM models as seismological parameters. Furthermore, the specific seismic performance exhibiting limited ductility capacity and the narrow margin of safety between the initial state of inelastic behavior and the ultimate (collapse) state for URM buildings is verified by the statistical approaches employed in this study
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