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Search Results: 1 - 10 of 150 matches for " Hulya Bayir "
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Antioxidant Approaches to Management of Ionizing Irradiation Injury
Joel Greenberger,Valerian Kagan,Hulya Bayir,Peter Wipf,Michael Epperly
Antioxidants , 2015, DOI: 10.3390/antiox4010082
Abstract: Ionizing irradiation induces acute and chronic injury to tissues and organs. Applications of antioxidant therapies for the management of ionizing irradiation injury fall into three categories: (1) radiation counter measures against total or partial body irradiation; (2) normal tissue protection against acute organ specific ionizing irradiation injury; and (3) prevention of chronic/late radiation tissue and organ injury. The development of antioxidant therapies to ameliorate ionizing irradiation injury began with initial studies on gene therapy using Manganese Superoxide Dismutase (MnSOD) transgene approaches and evolved into applications of small molecule radiation protectors and mitigators. The understanding of the multiple steps in ionizing radiation-induced cellular, tissue, and organ injury, as well as total body effects is required to optimize the use of antioxidant therapies, and to sequence such approaches with targeted therapies for the multiple steps in the irradiation damage response.
Condition Monitoring and Fault Diagnosis of Serial Wound Starter Motor with Learning Vector Quantization Network
R. Bayir
Journal of Applied Sciences , 2008,
Abstract: In this study, a Graphical User Interface (GUI) software for real time condition monitoring and fault diagnosis of serial wound starter motors has been developed using Learning Vector Quantization (LVQ) neural network. The starter motors are serial wound dc motors which enable the Internal Combustion Engine (ICE) to run. When the starter motor fault occurs, the ICE cannot be run. Therefore, condition monitoring and pre-diagnosis of starter motor faults are important. The information of voltages and currents is acquired from the starter motor via data acquisition card and transferred to the program. With this program using LVQ network, six faults observed in the starter motors were successfully detected and diagnosed in real time. The GUI software makes it possible to condition monitoring and diagnose the faults in starter motors before they occur by keeping fault records of the past occurrences. This system can be used in service shops and in test departments of starter motor manufacturers. In addition, this system has potential to be used for real time condition monitoring and fault diagnosis of vehicles with the help of industrial computers.
Genetic Relationship Between Days Open and Days Dry With Milk Yield in a Herd of Holstein Friesian Cattle
Hulya Atil
Pakistan Journal of Biological Sciences , 1999,
Abstract: A total of 2897actation records of Holstein Friesian cattle from the fields of Dena Farm in Egypt from 1987 to 1993 were used to study relationships of days open (DO) and days dry with milk production. The effect of month and year of calving, sire and cow within sires were also investigated. Month of calving, year of calving, sire and cow within sires significantly influenced milk production. Including DO and dry period (DP) as a polynomial of second degree of production were significant. The partial linear and quadratic regression coefficients of 305 day milk yield on DO and DP were significant, being 7.59 ±0.40 kg/d and -0.37 ±0.00 kg/d2, respectively for DO and -9.37 ±0.54kg/d and 0.02 ±0.00kg/d2,respectively for DP. Therefore, reduction of DO and DP are a desirable goal of dairymen. Heritability (h2) estimates for 305 day milk yield, DO, DP were 0.13 ±0.05, 0.00 and 0.00, respectively. Adjustment of lactation milk yield for DO will not involve genetic influence on milk yield.
A Comparison of Different Selection Indices for Genetic Improvement for Milk Traits in Holstein Friesian Cattle in Turkey by Using One Standard Deviation as Relative Economic Weight
Hulya Atil
Pakistan Journal of Biological Sciences , 2006,
Abstract: A total of 2133 normal lactation records of Holstein Friesian cows raised at five herds in Turkey, during the period from 1982 to 1998 were used in this study to estimate phenotypic and genetic parameters for 305 day milk yield (305 dMY), Lactation Period (LP) and Age at First Calving (AFC). In addition, four selection indices were constructed by using one standard deviation as a relative economic weight. Least squares analysis showed significant effects of herds, sire within herds, year and moth of calving on all traits studied (p<0.01), except the effect of year and month of calving on LP. Heritability estimates were 0.47, 0.18 and 0.53 for 305 dMY, LP and AFC, respectively. Genetic and phenotypic correlations among 305 dMY and LP were positive and highly significant, while, other correlations were small. Four selection indices were constructed, index I1 incorporating 305 dMY, LP and AFC was the best (RIH = 0.77) and it is recommended if the selection was exercised at the end of the first lactation. In addition, using one standard deviation as relative economic values is easy in estimation and small differences between this method and actual economic values.
An Important Psychosocial Risk in Occupational Health: Mobbing
Hulya Gul
TAF Preventive Medicine Bulletin , 2009,
Abstract: Mobbing, a rising issue in the occupational health area, has recently been paid attention more and more in the academic and business settings. Mobbing is a series of action having multidimensional features socially and psychologically, and it is frequent in occupational environment. Mobbing may present itself as behaviors, words, acts, gestures, or writings that affect personality, dignity, physical, and psychological integrity. Early 1990 s were the time studies about mobbing started to be done, indicating its negative effects on both individual and the working place. These extend from stress and depression to psychosomatic disorders, and even chronicle diseases and cardiovascular problems. Workplace mobbing is repetitive, unreasonable malicious behavior directed toward an employee or a group of employees, that creates risk to health and safety. It may manifest as intimidation, physical violence, discrimination, threats, social isolation, and destabilization. The most prominent result is lack of continuity. Organizational problems, time pressure, lack of leadership and task definition etc. are defined to be potential risk factors. For prevention, there must be an organized intervention including a strategically approach towards mobbing and a positive environment at workplace. There is a need for standardization, and studies to define and evaluate mobbing behavior in order to make a comparison between different cultures and occupations. In this review article mobbing was examined with the view of public health. [TAF Prev Med Bull. 2009; 8(6): 515-520]
The Vascular System of the Liver
Hulya GURBUZ
Trakya Universitesi Tip Fakultesi Dergisi , 2004,
Abstract: In this presentation, the hepatic vascular organization was reviewed. Intimate relations between the hepatic artery, portal vein, and bile channels form independent segmental regions in the liver parenchyma. The number and size of these segmental regions vary depending on the size of the hepatic arteries, portal vein, and hepatic ducts. Both the hepatic embryogenesis and anatomical segmentation determine the vascularity of the liver.
Reliability and Validity Studies of the Turkish Version of the Children’s Attitudes toward the Environment Scale-Preschool Version (CATES-PV) and the Analysis of Children’s Pro-environmental Behaviors According to Different Variables
Hulya Gulay
Asian Social Science , 2011, DOI: 10.5539/ass.v7n10p229
Abstract: In Turkey, the number of environmental education studies on young children is not sufficient. This is primarily due to the fact that scales for measuring the pro-environmental behaviors of young children are quite limited in number and are not common. This research has two aims which to carry out the reliability-validity studies of preschool environment scale, and to analyze the pro-environmental behaviors of 5-6 years old children with regard to different variables (age, gender, socio-economic level). The research included 171 children of 5-6 years of age receiving preschool education in the province of Denizli, Turkey. The Children's Attitudes Toward the Environment Scale-Preschool Version (CATES-PV) is a 15-item scale that one can use to assess the degree to which children's attitudes are pro-environmental. Study results have indicated that the CATES-PV Turkish Version is a reliable and valid measurement tool. The scale may be used to determine the pro-environmental behaviors of 5-6 years old Turkish children. This study provides a significant contribution to the field for further studies to be conducted in Turkey on the pro-environmental behaviors of young children. It is observed that the pro-environmental behaviors of the children included in the research differ according to age and socio-economic level. No difference was found between pro-environmental behaviors of children in terms of the gender variable.
Comparing and Contrasting First and Second Language Acquisition: Implications for Language Teachers
Hulya IPEK
English Language Teaching , 2009, DOI: 10.5539/elt.v2n2p155
Abstract: In an attempt to understand and explain first language (L1) acquisition and second language (L2) acquisition scholars have put forward many theories. These theories can aid language teachers to understand language learning and to assist their students in their language learning process. The current paper will first look at the similarities between the L1 and L2 acquisition. Then, the differences will be outlined. In the last part of the paper the implications of these findings for foreign language teachers will be discussed.
Synthesis of monoketo and monohydroxy eicosanoic acids and esters with substituents at odd numbered (3-13) carbons
HULYA CELIK
Journal of the Serbian Chemical Society , 2002,
Abstract: In this study, monoketo and monohydroxy eicosanoic acids and their methyl esters with the position of the substituent on odd numbered carbon atoms from 3 to 13 were synthesized with high purity. Furthermore, the semicarbazone and anilide derivatives of the obtained keto acids were prepared. They were characterized by TLC, IR and 1H-NMR spectroscopy and their physical and chemical properties were established.
Classification of Ordered Type Soliton Metric Lie Algebras by a Computational Approach
Hulya Kadioglu
Mathematics , 2013, DOI: 10.1155/2013/871930
Abstract: In this study, we classify some soliton nilpotent Lie algebras and possible candidates in dimension 8 and 9 up to isomorphy. We focus on 1 < 2 < ::: < n type of derivations where n is the dimension of the Lie algebras. We present algorithms to generate possible algebra structures.
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