1,757 research outputs found
Investigation of the Efficacy of Asprosin Given With Brain Infusion Kit on Reproductive Organs and Testosterone Hormone in Male Rats
No full textYilmaz, Bayram/0000-0002-2674-6535TUBITAK [220S744]This work was supported by TUBITAK (Project No: 220S744).Science Citation Index Expande
The Effects of Chronic Asprosin Administration on Monoamine Levels in the Arcuate Nucleus, Ventromedial Hypothalamus and Dorsomedial Hypothalamus Regions
No full textYilmaz, Bayram/0000-0002-2674-6535[No Abstract Available]TUBITAK [220S744]This research was supported by TUBITAK (Project no. 220S744).Science Citation Index Expande
Author Self-Citation in the Turkish Otorhinolaryngology Literature
No full textObjective:To evaluate the prevalence and other characteristics of author self-citations in six Turkey-originated general otorhinolaryngology (ORL) journals of Turkish ORL literature.Methods:A total of 970 articles published in six Turkey-originated general ORL journals (ENT Updates, Journal of Ear Nose Throat and Head Neck Surgery, KBB-Forum, Praxis of Otorhinolaryngology, The Turkish Journal of Ear Nose and Throat, and Turkish Archives of Otorhinolaryngology) in 2016-2020 were analyzed for author self-citations. The association between author self-citations and journal types, study types, study topics, country of origin, and compatibility with the topic were also evaluated.Results:There were 265 author self-citations (0.273 per article) which corresponded to 1.36% of all citations. There was no significant difference between the journal types, study topics, and origin of the studies in terms of mean self-citation values per study, whereas case reports had significantly lower self-citations than review and original investigations. There were three citations (1.1%) that were irrelevant to the study topic.Conclusion:To the best of our knowledge, this is the first study that investigated the practice of author self-citation in Turkish ORL literature. Author self-citation rate in the Turkish-originated general ORL journals was found remarkably lower than the medical literature, whereas the self-citations were found compatible with the study topic to a very large extent. Members of the scientific community including authors, readers, and journal editors should be cautious regarding the unethical practices of self-citations
Thermal analysis of a white calcium bentonite
No full textA white calcium bentonite (CaB) taken from CamlA +/- dere (Ankara, Turkey) region was heated at various temperatures between 100 and 1100 A degrees C for 2 h. The mineralogy of the CaB was determined as calcium smectite (CaS), metahalloysite (MH), opal-A (OA), opal-CT (OCT), quartz (Q), feldspar (F), and calcite (C) using the X-ray diffraction patterns of the natural CaB and its heated samples. Besides the XRD patterns, the thermogravimetry, differential thermal analysis, and low-temperature nitrogen adsorption (N-2-AD) data show that the CaS lose adsorbed and hydration water up to 300 A degrees C, dehydroxylation takes place between 300 and 750 A degrees C, and then the 2:1 layer structure completely collapses above 900 A degrees C. The activation energies for the dehydration and dehydroxylation were calculated as 7636 and 48838 J mol(-1), respectively, from the TG data using Coats and Redfern method. The specific surface area (S) and specific micro-mesopore volume (V) obtained from N-2-AD data were 44 m(2) g(-1) and 0.100 cm(3) g(-1) for the natural CaB. S and V reach their maxima of 105 m(2) g(-1) and 0.155 cm(3) g(-1), respectively, at 300 A degrees C, remain approximately constant as the temperature increases up to 700 A degrees C and then decrease almost in parallel with each other, reaching their minima at 900 A degrees C. This indicates that the S and V values increase gradually during dehydration and dehydroxylation of the CaS
An Evaluation of the Second Survey on Electronic Databases Usage at Ankara University Digital Library
No full textPurpose
The study encompasses the assessment of the effectiveness of the digital library and the value of multidisciplinary databases in terms of user preferences and use frequency by academic ranking.
Methodology
This paper compares the results of two survey questionnaires carried out in 2002 and 2005. To examine the level of awareness by academic staff of digital library resources along with their use rate and to evaluate the preferences of faculty for specific electronic databases case studies were undertaken by means of separate questionnaires in both years.
Findings
Findings were consistent that positive results have been observed in two studies conducted in two years, 2002 and 2005. According to the results of current survey, the increase numbers of the faculty members of Ankara University know about the existence of the digital library after the informative activities on databases from. Another result of the survey is that many of the faculty members, although not all of them use electronic databases. The most preferred databases have been Web of Science, Science Direct and Ebsco. When use of the electronic databases is analyzed, in respect of faculty rank and level of awareness, associate and assistant professors, assistants place at first ranges.
Originality/value
The study presents the first case study in the field in Turkey that compares the current situation of the digital library usage with the initial survey data
Sub-lethal effects of two pyrethroids on biological parameters and behavioral responses to host cues in the egg parasitoid Telenomus busseolae
No full textThe present study was undertaken to investigate possible integration of synthetic pyrethroids with biological control of Sesamia nonagrioides Lefebvre (Lepidoptera: Noctuidae) by the egg parasitoid Telenomus busseolae Gahan (Hymenoptera: Scelionidae). The effects of two commonly used synthetic pyrethroids, deltamethrin (Decis Jet 15 EC) and cyfluthrin (Bayteroid 5 EC), on the parasitoid were studied. Lethal concentrations (LC25) were estimated for both insecticides, and their sub-lethal effects on some biological parameters and behavioral responses to different kairomonal cues mediating host location were investigated. Parasitoid females exposed to cyfluthrin (LC25) parasitized significantly fewer eggs than untreated females, whereas neither the level of emergence from parasitized eggs nor the sex ratio of the offspring was affected by the insecticides. None of the above biological parameters were significantly affected by deltamethrin (LC25). Both insecticide treatments reduced the longevity of the parasitoids. The effects of both insecticides (LC25) on the behavioral responses of parasitoid females to the sex pheromone of S. nonagrioides, which acts as a long-distance kairomone, were investigated in a Y-tube olfactometer. Cyfluthrin-treated parasitoids failed to respond to the host pheromone, whereas deltamethrin-treated females responded similarly to untreated females. In addition, sub-lethal effects of pyrethroids on parasitoid arrestment behaviors were evaluated in an open arena containing abdominal scales from virgin female moths, which are a source of short-distance kairomone for the parasitoid. No significant differences in arrestment behaviors (residence time, linear speed) were found. Based on our results, possible consequences of treating maize with cyfluthrin or deltamethrin on the effectiveness of surviving T. busseolae in the field are discussed. (C) 2009 Elsevier Inc. All rights reserved.ESF-BEPAR [1953]We would like to thank Andrea Luchetti, Donatella Marchionni, Daniela Fortini, and Cesare Dentini for maintaining the insect cultures and Fulvio Ielo for help during data collection. We also would like to thank the European Science Foundation - Behavioral Ecology of Insect Parasitoids (ESF-BEPAR) program for financially supporting the first author (A. Bayram) with an exchange grant (Grant No: 1953)
Relationship between preoperative volumetric tomography measurement of maxillary intra-osseous vascular canal and intraoperative bleeding: a pilot study
No full textTÜRK ÜNİVERSİTELERİNDE FARKLI EĞİTİM MODELLERİNİN SAĞLIK ÖĞRENCİLERİNİN FİZİKSEL AKTİVİTE DÜZEYLERİ VE SAĞLIK PROFİLLERI ÜZERİNE ETKİLERİ
No full textTurkish Journal of Physiotherapy Rehabilitation / Türk Fizyoterapi ve Rehabilitasyon DergisiPurpose: Hybrid and distance educational models can lead to different levels of physical activity among students. The aim of our study is to compare the effects of different education models on physical activity and health profile of university healthcare students. Methods: Six hundred healthcare students at Turkish universities between the ages of 17-25 were included in our study. Participants were divided into 2 groups as hybrid (n 300, 246 females, 54 males) and distance (n 300, 258 females, 42 males) according to the education model they received at the university. Measurements were applied online via Google Forms. The Physical Activity (PA) of the participants were assessed with Physical Activity Questionnaire-Short Form (IPAQ-SF) and the health profiles of the participants were assessed with The Nottingham Health Profile (NHP) inventory. Results: The students in the hybrid education model had significantly higher physical activity level (p0.001) and a better health profile (p0.001) compared to the students who were in distance education model. Conclusions: Students with hybrid education model are more physically active and have a better health profile than students with distance education model because they go to university more than students with distance education model
Surface Plasmon Resonance Aptasensor for Soluble Icam-1 Protein in Blood Samples
No full textKavruk, Murat/0000-0001-5331-7253; Dursun, Ali Dogan/0000-0001-9056-0025; Tuna, Bilge Guvenc/0000-0003-1348-1336; Yilmaz, Bayram/0000-0002-2674-6535; Özalp, Veli Cengiz/0000-0002-7659-5990; Yilmaz, Mahmut/0000-0001-5793-0805Intercellular Adhesion Molecule-1 (ICAM-1) is considered to be a cancer biomarker in the assessment of metastatic potential in patients and an early indicator of atherosclerosis. A labelless biosensor based on the surface plasmon resonance (SPR) signal from the specific affinity interaction of an aptamer and a soluble ICAM-1 protein was developed for blood samples. The developed aptasensor provided real-time information on the concentration of the ICAM-1 protein in blood when integrated to a purification step based on a magnetic pull-down separation. The SPR aptasensor was highly specific with a limit of detection of 1.4/0.2 ng ml(-1), which was achieved through aptamer-functionalized silica-coated magnetic nanoparticles.Scientific and Technological Research Council of Turkey (TUBITAK) [115S233]This work was partly supported by a project grant number 115S233 from The Scientific and Technological Research Council of Turkey (TUBITAK)
Answer To The Letter To The Editor Of Weiss Hr Concerning “The Acute Effects Of Brace Use On Lower Extremity Performance In Individuals With Adolescent Idiopathic Scoliosis” By Unuvar Bs, Yilmaz K, And Celik F (Ir J Med Sci. 2023)
No full textSpringer Science and Business Media Deutschland GmbH[No abstract available
- …
