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Search Results: 1 - 10 of 455 matches for " Tulay Askin Celik "
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Cytogenetic Effects of Some Fungicides on Barley Root Tip Meristem Cells
Tulay Askin Celik
Pakistan Journal of Biological Sciences , 2006,
Abstract: Two fungicides Derosal 50 WP and Korsikol 18 Dust those widely used in agriculture for seed protection were applied to barley seeds (Hordeum vulgare L) in concentrations of 100, 200 and 300 ppm in intervals of 6, 12 and 24 h. In control experiments, distilled water was used instead of fungicides. Effects of Korsikol and Derosal on structure and behaviour of chromosomes were investigated using mitosis analysis on root tip cells of barley seeds which were germinated after the chemical application. In addition, modifying effects of these two fungicides on mitotic index were studied. Cytological findings which were obtained from these experiments showed that the fungicides affect cell division and chromosome structure depending on dose which were used in time intervals.
Preventive Effect of Lycopene on Chromosome Aberrations in Allium cepa
Ozlem Sultan Aslanturk,Tulay Askin Celik
Pakistan Journal of Biological Sciences , 2005,
Abstract: In this study, whether lycopene has preventive effect on chromosome aberrations or not was investigated. For this purpose, 2 different concentrations (0.02 and 0.03 M) of Ethyl Methane Sulfonate (EMS) which is known to induce chromosomal damage were treated on Allium cepa for 2 h. Afterwards, plant roots were treated with lycopene extracts in 4 different concentrations (1, 3, 5 and 10 μM) for 24 h. 0.02 and 0.03 M EMS were used as positive control and tap water was used as negative control. Root tip meristematic cells were observed under the microscope. Mitotic index (MI) and chromosomal aberrations (fragments, bridges, stickness, polar deviation) and micronucleus formation were evaluated and statistically analyzed. As a result; it was determined that depending on applied lycopene concentrations both in MI and chromosomal aberrations lycopene-caused some changes. It was seen that lycopene had preventive effect on chromosome aberrations particularly at 1 and 3 μM concentrations, but this effect decreased at 5 and 10 μM concentrations.
Effects of Different Levels of Vitamin E on Some Growth Parameters and Gonadal Histology of Tilapia Oreochromis niloticus L., 1758 Fingerlings
Filiz Celik,Tulay Altun
Journal of Animal and Veterinary Advances , 2012,
Abstract: The effects of diets including different levels of Vitamin E (110.25 mg kg-1 feed (Control Group), 175 mg kg-1 feed (Group 1), 200 mg kg-1 feed (Group 2) and 250 mg kg-1 feed (Group 3)) on growth parameters, survival rate and gonadal histology of Oreochromis niloticus L., 1758 were examined in this study. Fish (20.62±1.19 g and 10.33 ±0.20 cm) was fed with Vitamin E enriched feed for 60 days. At the end of the experiment, the highest body weight, total length, daily growth rate, specific growth rate, condition factor and gonadosomatic index were in Group 1. Whereas, the best survival rate (100%) was taken form Group 2 and 3, lower rates (78 and 85%) were seen in the other groups. As to histological view, it was also observed that as Vitamin E levels increased growth stages of the ovarian and testis tissues. It was concluded from all results in this study that the most proper ratio of Vitamin E in the feed is 250 mg Vitamin E kg-1 feed for growth of O. niloticus of such size.
The Effect of Field Trips to Historical Cultural Heritage Sites on Teacher Candidates’ Academic Knowledge and Their Sensitivity  [PDF]
Tulay Ocal
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.72037
Abstract: Culture is historical cultural accumulations that are acquired rather than being born with and are bequeathed to future generations. Today, technological developments resulting from globalization have affected societies and begun to destroy cultures. Realizing this, Turkey and many countries have started Historical Cultural Heritage Education to protect historical cultural heritage and to raise awareness of younger generations. To increase the teacher candidates’ academic knowledge and teach the importance of historical cultural heritage, in-class activities are done and lectures are given in universities’ education faculties. However, it is seen that these activities do not make sense for them and therefore their academic knowledge and their sensitivity do not increase enough. In this study, teacher candidates’ sensitivity about historical cultural heritage and their academic knowledge was determined by the field trip taken to Tarsus’s historical cultural sites. The sample of this study is 30 second and third year social studies teacher candidates attending Nigde University. One group pre-test, post-test experimental design was used. After literature review, a 30-question survey was developed for data collection. The survey was conducted before and after the trip. The data was analyzed with SPSS. As a result of t-test, the difference between the sensitivity pre-test and post-test scores was 1.60, which was statistically significant. The difference between the academic knowledge pre-test and post-test scores was 4.2, which was also statistically significant. These findings showed that field trips should be organized more.
Necessity of Cultural Historical Heritage Education in Social Studies Teaching  [PDF]
Tulay Ocal
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.73039
Abstract: This is accumulated on regions where the geography is suitable; cultures are rare heritages that are passed on from generation to generation. People have created and shaped these and preserved them as material and nonmaterial cultural accumulations through generations. Our ancestors have entrusted this heritage to pass on to the future generations. Reflecting the people and their activities vividly, cultural historical heritages are also the cultural changes people establish on earth. These cultural changes prepared by geography form cultural historical heritages over time. Government institutions and civil organizations have been working to pass on these cultural historical heritages to the future generations. However, their work is not sufficient and these heritages are getting destroyed. For the protection of these heritages and passing them on to the future generations, great responsibilities fall to universities and especially to the teacher candidates studying in education faculties. In particular, more responsibility fall to the teacher candidates attending social studies education departments of education faculties because subjects about cultural historical heritage are found in middle school social studies curricula and the social studies standards emphasize this subject. However, there is no course solely about cultural historical heritage in universities’ social studies education departments. The history and archeology courses are taught as compulsory or elective courses in social studies education departments. Turkey, with a very old history and innumerable cultures, should be more aware about the importance of this issue. In this study, all the courses provided in Turkey’s social studies education departments are examined and found that they are insufficient. Therefore, cultural historical heritage courses should be provided as compulsory courses to the teacher candidates and these courses’ content should be organized to include Turkey’s cultural historical because social education teachers play a big role in educating the future generations.
Transition of Wild-Caught Juvenile Pikeperch, Sander lucioperca (Bogustkaya and Naseka, 1996) to Dry Feed Using Different Types of Food
Tulay Altun,Arzu Ozluer Hunt,Erhan Gungor,Filiz Celik,Abdurrahman Polat
Journal of Animal and Veterinary Advances , 2012,
Abstract: Wild-caught juvenile pikeperch (Sander lucioperca (6.21 0.38 g and 7.80 0.24 cm) were offered different types of food and tested for their transition to dry feed. Totally 8 Groups (including Control) were fed according to the experimental feeding regime during 28 days. Group A (control) was fed with live Gambusia affinis fries alone. As initial feeding (the first 7 days of the experiment) before transition to dry feed, Groups B, C and D were offered live food, Groups E and F were offered moist feed (minced bait shrimp meat and minced fish meat, respectively). Group G and H were offered semi moist feed (a mixture of fish meat + dry feed and a mixture of bait shrimp meat + dry feed, respectively). To determine their preferences and acceptance of different feeds, some growth parameters were calculated for each group. The study showed that pikeperch in this size consumed all experimental diets and direct transition to dry feed could be achieved successfully after 7 days initial feeding with live food. The best weight gain was in Group A fed with live food alone (5.26 0.11g) (p<0.05), followed by Group B fed first with live and then dry feed (4.43 0.28g). Survival rates varied between 56 and 96%.
The Contribution of Supervisors to Doctoral Students in Doctoral Education: A Qualitative Study  [PDF]
Kazim Celik
Creative Education (CE) , 2013, DOI: 10.4236/ce.2013.41002
Abstract: In this study, it was aimed to analyze supervisor-student relationship in the doctoral education based on views of students. For this reason, research assistants having completed doctoral education and got PhD title were asked what the contributions of their supervisors were and what kind of problems they experienced in doctoral education. Considering academic advising process, it was intended to shed a light on both formal and information sides of supervisor-student relationship. As a design of the study, qualitative case study method was used. In the light of the aim of the study, “semi-structured data collection form”, one of the qualitative data collection tools, was used to collect the data. The data gained from 19 research assistants having completed their PhD degrees in the past 36 months were analyzed with content analysis. The past/ongoing contribution of supervisors to their students’ education were classified under the themes of contribution to their personal development, contribution to academic development, contribution to professional development, and contribution to intellectual development. The students, being in intimate relationship with their supervisors, emphasize positive contributions of supervisors. However, the students, not being in an intimate relationship, underline the negative characteristics of their supervisors. Few of the participants utter ongoing contribution of supervisors. This study analyzes dimensions for the contribution of supervisors to students in doctoral education, and the experiences of students in these dimensions. In this regard, academicians who are supervisors or will be supervisors are expected to benefit from the study.
Computer Technology Awareness by Elementary School Teachers: A Case Study from Turkey
Askin Asan
Journal of Information Technology Education : Research , 2003,
Abstract:
CONTEMPORARY USAGE OF TRADITIONAL TURKISH MOTIFS IN PRODUCT DESIGNS
Tulay Gumuser
Idil Dergisi , 2012, DOI: 10.7816/idil-01-05-14
Abstract: The aim of this study is to identify the traditional Turkish motifs and its relations among present industrial designs. Traditional Turkish motifs played a very important role in 16th century onwards. The arts of the Ottoman Empire were used because of their symbolic meanings and unique styles. When we examine these motifs we encounter; Tiger Stripe, Three Spot ( intemani), Rumi, Hatayi, Pen , Cloud, Crescent, Star, Crown, Hyacinth, Tulip and Carnation motifs. Nowadays, Turkish designers have begun to use these traditional Turkish motifs in their designs so as to create differences and awareness in the world design. The examples of these industrial designs, using the Turkish motifs, have survived and have Ottoman heritage and historical value. In this study, the Turkish motifs will be examined along with their focus on contemporary Turkish industrial designs used today.
The Feature-Based a New Object Coding Approach for Prismatic Parts at the Part Modeling  [PDF]
Ismet Celik, Ali Unuvar
Modeling and Numerical Simulation of Material Science (MNSMS) , 2013, DOI: 10.4236/mnsms.2013.34018
Abstract:

Use of features in order to achieve the integration of design and manufacture has been considered to be a key factor recent years. Features such as manufacturing properties form the workpiece. Features are structured systematically through object oriented modeling. This article explains an object coding method developed for prismatic workpieces and the use of that method in process planning. Features have been determined and modeled as objects. Features have been coded according to their types and locations on the workpiece in this given method. Feature codings have been seen to be very advantageous in process planning.

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