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Search Results: 1 - 10 of 4602 matches for " IBRAHIM KOC "
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In Silico chloroplast SSRs mining of Olea species
ERTUGRUL FILIZ,IBRAHIM KOC
Biodiversitas , 2012,
Abstract: Filiz E, Koc E. 2012. In Silico chloroplast SSRs mining of Olea species. Biodiversitas 13: 114-117. Simple sequence repeat (SSR) markers are highly informative and have been widely applied as molecular markers in genetic studies. The purpose of present study is to analyze the occurrence and distribution of chloroplast SSRs in genic and intergenic regions from Olea species viz., Olea europaea, Olea europaea subsp. cuspidate, Olea europaea subsp. europaea, Olea europaea subsp. maroccana, Olea woodiana subsp. woodiana by using bioinformatics tools. We identified 1149 chloroplast SSRs (cpSSRs) in all genome and a total of 340 (29.6%) was located in genic regions. It was observed that the most abundant repeat types were found mononucleotide SSR (66.7 %) followed by trinucleotide SSR (28.3 %), dinucleotide (2.7%), tetranucleotide (1.5%) and pentanucleotide (0.8%). cpSSRs located in genic regions were identified only mono- and trinucleotide motifs, the most abundant of which was trinucleotide (16.2%) followed by mononucleotide (14.3%). All types of repeat motif (mono-, di-, tri-, tetra- and pentanucleotide) were detected except hexanucleotide motifs. According to SSRs analysis, the most abundant observed motifs were identified for mono-, di-, tri-, tetra- and pentanucleotide cpSSRs A/T, AT/TA, AAG/CTT, AAAG/AGTTT, and AATCC/ATTGG respectively. This study results provided scientific base for phylogenetics, evolutionary genetics and diversity studies on different Olea species in future.
Numerical Solution of Sine-Gordon Equation by Reduced Differential Transform Method
Yildiray Keskin,Ibrahim Caglar,Ayse Betul Koc
Lecture Notes in Engineering and Computer Science , 2011,
Abstract:
Biosafety
Ruhtan Baskaya,Yasar Keskin,Alper Karagoz,Haci Ibrahim Koc
TAF Preventive Medicine Bulletin , 2009,
Abstract: Food safety, as well as the human, animal, and plant health are the sectors which are covered wihtin the framework of biosafety. Biosafety covers all the effots spent for the formulation of the policies and legal arrangentments related with the above mentioned sectors. The concept of biosafety involves the production of safe food, development and supply of Genetically Modified Organisms (GMO) and the drugs used in combating and curing of plant and animal diseases, as well as their derivates, and management (control) of the invasive alien species and their genotypes. [TAF Prev Med Bull. 2009; 8(2): 177-186]
Solar Drying of Red Peppers: Effects of Air Velocity and Product Size
A. Bulent Koc,Murat Toy,Ibrahim Hayoglu,Hasan Vardin
Journal of Applied Sciences , 2007,
Abstract: The purpose of present study was to determine the effects of drying air velocity and pepper size on drying time, the dried product`s ascorbic acid level (Vitamin C) and color using response surface methodology. A solar dryer consisting of a solar collector and a drying chamber was used to conduct the experiments between September 4 and October 10, 2003 in Sanliurfa, Turkey. The overall drying conditions providing the minimum drying time, maximum ascorbic acid level and highest extractable product color were determined to be 1.3 m sec-1 and 6 slices per pepper.
Dynamic Analysis of the Turnout Diverging Track for HSR with Variable Curvature Sections  [PDF]
Wladyslaw Koc, Katarzyna Palikowska
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.51005
Abstract: The paper presents an analytical method of identifying the curvature of the turnout diverging track consisting of sections of varying curvature. Both linear and nonlinear (polynomial) curvatures of the turnout diverging track are identified and evaluated in the paper. The presented method is a universal one; it enables to assume curvature values at the beginning and end point of the geometrical layout of the turnout. The results of dynamics analysis show that widely used in railway practice, clothoid sections with nonzero curvatures at the beginning and end points of the turnout lead to increased dynamic interactions in the track-vehicle system. The turnout with nonlinear curvature reaching zero values at the extreme points of the geometrical layout is indicated in the paper as the most favourable, taking into account dynamic interactions occurring in the track-vehicle system.
The assessment of carotid intima media thickness and serum Paraoxonase-1 activity in Helicobacter pylori positive subjects
Halide S Akbas, Sebahat Basyigit, Inci Suleymanlar, Didem Kemaloglu, Serkan Koc, Fatih Davran, Ibrahim Demir, Gultekin Suleymanlar
Lipids in Health and Disease , 2010, DOI: 10.1186/1476-511x-9-92
Abstract: Thirty H. pylori positive subjects and thirty-one negative subjects were enrolled. H. pylori infection was diagnosed by the presence of positivity of stool H. pylori antigen test or Carbon 14 labeled urea breath test. Serum PON1 activity was measured spectrophotometrically. Traditional cardiovascular risk factors were investigated and laboratory analysis included measurement of serum triglycerides (TG), total cholesterol (TC), high-density lipoprotein (HDL-C) and low-density lipoprotein cholesterol (LDL-C). We assessed CIMT by high-resolution ultrasound of both common carotid arteries.We found that the mean and maximum values of right and overall CIMT in H. pylori positive subjects were significantly thicker than those of H. pylori negative subjects. There was no significant differences in serum HDL-C, LDL-C, TC levels and TC/HDL-C ratios between two groups. Serum TG levels of H. pylori positive subjects were significantly higher than those of H. pylori negative subjects (p = 0.014). We found that PON1 activities were significantly lower in H. pylori positive subjects compared with negative subjects. No significantly correlation was observed between PON1 and CIMT values.There is an increase in CIMT values in patients with H. pylori positive compared to H. pylori negative subjects. PON1 activity decrease significantly in H. pylori positive subjects. However, an association between PON1 and CIMT was not found. These data indicated that H. pylori may have a role in atherosclerotic processes, however, further studies are needed to evaluate the exact mechanisms.Helicobacter pylori is a gram negative curved bacillus that is frequently found in the human stomach and causes chronic and active gastritis, peptic ulcer disease and is associated with gastric adenocarcinoma [1,2]. Several studies have demonstrated that H. pylori infection is also associated with the development of coronary atherosclerosis [3]. Atherosclerosis pathogenesis includes abnormal lipid metabolism, endo
Daily milk yield, non-fat dry matter content and somatic cell count of Holstein-Friesian and Brown-Swiss cows
Koc Atakan
Acta Veterinaria , 2007, DOI: 10.2298/avb0706523k
Abstract: The aim of this study was to determine the factors affecting the Daily Milk Yield (DMY) per milking, Non-fat Dry Matter percentage (NFDM%) and Somatic Cell Count (SCC) from Holstein-Friesian (HF) and Brown-Swiss (BS) cows managed in the Mediterranean climatic conditions in Turkey. The farms considered in this study were visited monthly for two years to measure DMY and to collect milk samples from each cow during morning and evening milkings. A total of 1,415 sets of data from 67 HF and 16 BS cows for each trait were analyzed by using repeated measures. Breed, lactation month, milking time and the interaction between herd and lactation month were found to be statistically significant for all traits (P<0.05). The co-variable effects of NFDM% (P<0.05) and Log10SCC (P<0.01) on DMY, and DMY on Log10SCC (P<0.01) were significant. The averages of DMY, NFDM% and SCC for HF cows were 8.92±0.188 kg, 9.61±0.048% and 491,813 cells/mL and for BS cows were 7.09±0.367 kg, 10.12±0.093% and 312,464 cells/mL, respectively. For all traits some important differences were determined between the breeds, due to the different physiological mechanisms, milking characteristics and the morphological conformations of udders. In order to increase the quality and quantity of milk, additional measures need to be taken, such as improving milking management, hygiene, nutrition and barn conditions.
Individual Learner Differences In Web-based Learning Environments: From Cognitive, Affective and Social-cultural Perspectives
Mustafa KOC
The Turkish Online Journal of Distance Education , 2005,
Abstract: Individual Learner DifferencesIn Web-based Learning Environments:From Cognitive, Affective and Social-cultural Perspectives Mustafa KOCPh.D Candidate Instructional TechnologyUniversity of Illinois at Urbana-ChampaignUrbana, IL - USA ABSTRACT Throughout the paper, the issues of individual differences in web-based learning, also known as online instruction, online training or distance education were examined and implications for designing distance education were discussed. Although the main purpose was to identify differences in learners’ characteristics such as cognitive, affective, physiological and social factors that affect learning in a web-enhanced environment, the questions of how the web could be used to reinforce learning, what kinds of development ideas, theories and models are currently being used to design and deliver online instruction, and finally what evidence for the effectiveness of using World Wide Web (WWW) for learning and instruction has been reported, were also analyzed to extend theoretical and epistemogical understanding of web-based learning.
Analysis of Repeated Milk Somatic Cell Count of Holstein-Friesian Cows Raised in Mediterranean Climatic Conditions
Atakan Koc
Journal of Biological Sciences , 2006,
Abstract: Somatic Cell Counts (SCC) in milk of Holstein-Friesian (HF) cows were monthly determined by direct microscopic SCC technique for two years period. In total, 1,682 SCC data from 95 HF cows were analyzed by using repeated measures. Herd, lactation month, parity, milking time and daily milk yield effects on SCC were found to be statistically significant (p<0.01). The averages of SCC in milk for herds were between 319, 448 and 497,279 cells mL-1. SCC in milk increased as parity increased. The average SCC in milk from the evening milking had about 28,768 cells mL-1 higher than that of morning milking. Improving barn conditions, managerial practices, milking management, giving an extra care at the first month of lactation and also milking at uniform interval will help to decrease SCC in milk.
Globalization of Food
Mustafa Koc
The Canadian Journal of Sociology , 2012,
Abstract: Book Review
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