219 research outputs found
Web of Science veritabanına dayalı Türkiye'deki hemşirelik yayınlarının bibliyometrik analizi: (1984-2025)
No full textBu çalışmada Web of Science (WoS) veritabanına dayalı Türkiye'deki hemşirelik yayınlarının bibliyometrik analizini değerlendirmek amacıyla yürütülmüştür. Araştırmaya 1984-2025 yılları arasında, Türkiye adresli olan 'Nursing' WoS kategorisinde yayımlanan makaleler dahil edilmiştir. Araştırma verileri, VOSViewer ve Bibliometrix yazılımları kullanılarak analiz edilmiştir. Elde edilen bulgulara göre, 1984-2025 yılları arasında makalelerin 184 farklı kaynakta yayımlandığı belirlenmiştir. Analizler sonucunda, toplam makale sayısının 8123; yıllık büyüme oranının %18.18; makalelerin ortalama yaşının 5.25 yıl; makale başına düşen ortalama atıf sayısının 9.448; toplam kullanılan kaynakça sayısının 216816; toplam anahtar kelime sayısının 5973 ve yazar anahtar kelime sayısının ise 10340 olduğu belirlenmiştir. Yazar analizi sonucunda, toplam yazar sayısının 10907, tek yazarlı makalelere sahip yazar sayısının ise 271 olduğu bulunmuştur. Çalışmaya yalnızca araştırma makaleleri ve derleme türündeki çalışmalar dâhil edilmiş olup, araştırma makalesi sayısının 7697, derleme makalesi sayısının ise 426 olduğu belirlenmiştir. Yayımlanan makale sayılarının yıllara göre artış gösterdiği belirlenmiştir. En az makalenin 1984 yılında, en çok makalenin ise 2024 yılında yayımlandığı tespit edilmiştir. En fazla atıf alan birinci yayının atıf sayısının 229 olduğu ve çalışmanın kültürlerarası ölçek uyarlama aşamalarını incelediği belirlenmiştir. Yazar işbirliği analizi sonucunda, toplam 16 küme oluştuğu ve en çok iş birliği yapan yazarın "Tastan, S" olduğu belirlenmiştir. Makale sayısı açısından İstanbul Üniversitesi (n = 524), Ege Üniversitesi (n = 518) ve Hacettepe Üniversitesi (n= 495) olduğu belirlenmiştir. En çok tekrarlanan anahtar kelimenin "nursing" olduğu; en çok yayın yapan derginin "Perspectives in Psychiatric Care" olduğu tespit edilmiştir. Bununla birlikte 2025 yılında trend konular arasında "yapay zekâ", "bibliometrik analiz", "afet yönetimi", "depremler", "ağrı korkusu" olduğu tespit edilmiştir. Sonuç olarak, bu araştırmanın bulguları, Türkiye'de hemşirelik alanındaki bilimsel üretimin yıllar içinde önemli bir artış gösterdiğini ve alandaki eğilimlerin, trend konuların ve araştırma boşluklarının belirlenmesine katkı sağlamaktadır.This study was conducted with the aim of evaluating the bibliometric analysis of nursing publications in Turkey based on the Web of Science (WoS) database. The study included articles published between 1984 and 2025 in the 'Nursing' WoS category with a Türkiye address. The research data were analyzed using the VOSViewer and Bibliometrix software. According to the findings, between 1984 and 2025, the articles were published in 184 different sources. The analyses revealed that the total number of articles was 8123; the annual growth rate was 18.18%; the average age of the articles was 5.25 years; the average number of citations per article was 9.448; the total number of references used was 216816; the total number of keywords was 5,973; and the total number of author keywords was 10340. The author analysis showed that the total number of authors was 10907, with 271 authors having single-authored articles. Only research articles and review articles were included in the study, with the number of research articles being 7697 and review articles 426. It was determined that the number of published articles increased over the years. The lowest number of articles was published in 1984, while the highest was published in 2024. The most cited article received 229 citations and examined the stages of cross-cultural scale adaptation. The author collaboration analysis identified 16 clusters, with "Tastan, S" being the author with the highest level of collaboration. In terms of the number of articles, Istanbul University (n = 524), Ege University (n = 518), and Hacettepe University (n = 495) ranked highest. The most frequently used keyword was "nursing," and the journal with the highest number of publications was Perspectives in Psychiatric Care. Furthermore, in 2025, trending topics included "artificial intelligence," "bibliometric analysis," "disaster management," "earthquakes," and "pain-related fear." In conclusion, the findings of this research demonstrate that scientific production in the field of nursing in Türkiye has shown a significant increase over the years, contributing to the identification of trends, emerging topics, and research gaps in the field
The higher topological complexity in digital images
No full text[EN] Y. Rudyak develops the concept of the topological complexity TC(X) defined by M. Farber. We study this notion in digital images by using the fundamental properties of the digital homotopy. These properties can also be useful for the future works in some applications of algebraic topology besides topological robotics. Moreover, we show that the cohomological lower bounds for the digital topological complexity TC(X,κ) do not hold.he first author is granted as fellowship by the Scientific and Technological Research Council of Turkey TUBITAK2211-A. In addition, this work was partially supported by Research Fund of the
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Comparison of structural properties of some liquid crystals
No full textMolecular dynamics simulations were performed for three liquid crystalline molecules, 4-cyano4' octyloxybip-henyl (8OCB), n-p-cyanobenzylidene-p-octyloxyaniline (CBOOA), and p-n-hexyloxybenzylidene-p' -aminobenzonitrile (HBAB). Simulation data were obtained for three liquid crystals in the nematic and isotropic phases to analyze their structural properties. The imine spacer group in the Schiff bases induces a stepped core structure in which the linearity is maintained. The distributions of the angles between some defined vectors imply that the core segments of CBOOA and HBAB are more floppy than the 8OCB core. The biaxialities, molecular dimensions, and molecular anisotropies were calculated. The results were compared for three mesogens in the nematic and isotropic phases.Ege UniverstyThe computations were performed at the ULAKBIM High Performance Computing Center, which is gratefully acknowledged. This study was partially supported by Ege University under the BAP 2011 Fen 043 and 2011 Fen 044 projects. The author is deeply grateful for the financial support of Ege Universty
Dynamics of a Western Anatolian population of Natrix natrix and Natrix tessellata (Serpentes: Natricidae)
No full textDue to their secretive nature, snakes are the most challenging animal group for monitoring. Nevertheless, population size estimates are indispensable to accurately determining conservation status and management strategies. We used passive integrated transponder (PIT) tags to track aquatic snakes Natrix natrix and Natrix tessellata in Lake I????kl??, Denizli province, Turkey. 304 N. natrix and 1563 N. tessellata specimens were captured and marked over the four-year sampling period. Of the marked individuals, 14 N. natrix and 97 N. tessellata were recaptured at least once. The three-year average population size was estimated at 1940 ?? 1055 for N. natrix, and 10,146 ?? 1679 for N. tessellata. The annual survival rate is 0.57 ?? 0.19 (range = 0.22???0.86) and 0.37 ?? 0.06 (0.27???0.50) for N. natrix and N. tessellata, respectively. In April, which is the most active month for water snakes, 60% of the snakes were captured. This study represents the first comprehensive demographic estimates of Natrix species in Turkey.TUBITAK [116Z359]; Accounting Office for Funds at Ege University [2015FEN005]This study is based on the PhD thesis of the first author and was financially supported by TUBITAK (project no: 116Z359) and by the Accounting Office for Funds at Ege University (project no: 2015FEN005). We thank Dr. K. CICEK, Dr. S. ILHAN, A. KAYA, and M. A. GURBUZ for their help in the field surveys
Design of a new generation wound dressing with pine bark extract
No full textMedical textiles are one of the fastest growing sectors in the technical textile market. Wound dress is one of the significant applications with the largest share in medical textiles. Active molecules doped in the dressings may be therapeutic agents, vitamins, antibiotics, minerals, and growth factors, which contribute to wound healing. Medical plants have a great potential with positive effects in wound care and accelerate the rate of wound healing. Pine bark, which is known to exhibit wound healing properties, is also used in the medical field. The purpose of this study is to design a new wound dressing enriched with Pinus brutia extract. Microwave-assisted extraction which is an environmentally friendly method was carried out at 70?, 900 W for 10 min to obtain the extracts. Subsequently, P. brutia bark extract was embedded to the alginate gel dressing and characterized and evaluated by in vivo studies on rats. According to the results, the extract was rapidly released from the alginate gel in the first 6 h, whereas the release was slowly increased to 24 h and then reached a steady state. Therefore, P. brutia extract-embedded alginate gel dressings applied for in vivo studies were changed every 24 h, reaching a healing rate of 75.7%, whereas the control group showed a healing rate of 48.6% indicating the superiority of the newly designed wound healing dress enriched with pine bark extract. © The Author(s) 2019.Ege Üniversitesi: 15MUH051The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The authors would like to acknowledge the financial support from Research Fund of Ege University through 15MUH051 project
Potential of the bacterial strain Acidovorax avenae subsp avenae LMG 17238 and macro algae Gracilaria verrucosa for denitrification
No full textIn this biological nitrate removal study, the performance of the bacterial strain Acidovorax avenae subsp. avenae LMG 17238 using different carbon sources such as ethanol, methanol, sodium acetate, glucose and poly (epsilon-caprolactone) was investigated. Additionally the parameters such as an increase of nitrate concentration, carbon source amount (C/N) and dilution of a synthetic medium were studied. In laboratory conditions LMG 17238 and a mixed bacterial culture (soil suspension, wastewater treatment and macro algae Gracilaria verrucosa) have been immobilized as a comparative study to determine their efficiency in the biological denitrification of drinking water. For the continuous system as a carbon source, G. verrucosa was studied in fixed-bed columns. Various variables such as hydraulic retention time (HRT), mass amount of the substrate, and the initial nitrate concentration were investigated. A comparative study was achieved by using biodegradable poly(c-caprolactone) as a carbon source using a mixed bacterial culture (LMG 17238 and G. verrucosa) in a fixed-bed column. Also Monod type equations were used to model the denitrification kinetics. The study proves that, LMG 17238 can be successfully used with different carbon sources. G. verrucosa can be considered as a promising alternative to poly(c-caprolactone) with a maximum denitrification rate of 13.83 and 0.94 mg NO(3)(-)N/L d respectively. (C) 2011 Elsevier B.V. All rights reserved.DAADDeutscher Akademischer Austausch Dienst (DAAD); Research Foundation of Ege UniversityEge University; EBILTEMEge University; TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)The authors would like to thank Dr. W. R. Muller, Dr. J. Mergaert and Prof. Dr. U. Obst for their support, which enabled this biological denitrification project. The authors would also like to thank A. Ata for her assistance in the preparation of this manuscript. The author B. Ovez, would like to thank DAAD for the scholarship, which enabled us to start the project work at Karlsruhe and Stuttgart Universities. This work was financed by the Research Foundation of Ege University, EBILTEM and TUBITAK
Generalized Derivations Acting on Multilinear Polynomials in Prime Rings and Banach Algebras
No full textLet R be a prime ring of characteristic different from 2 with Utumi quotient ring U and extended centroid C, F and G, the two nonzero generalized derivations of R, I an ideal of R and f(x(1),..., x(n)) a multilinear polynomial over C which is not central valued on R. If F(G(f (x(1),..., x(n))) f (x(1),..., x(n))) = 0 for all x(1),..., x(n). I, then one of the followings holds: (1) there exist a, b epsilon U such that F(x) = ax and G(x) = bx for all x. R with ab = 0; (2) there exist a, b, p epsilon U such that F(x) = ax + xb and G(x) = px for all x epsilon R with F(p) = 0 and f (x(1),..., x(n))(2) is central valued on R. We also obtain some related results in cases where R is a semiprime ring and Banach algebra.INSA, India; TUBA, TurkeyTurkish Academy of SciencesThe authors would like to thank the referee for providing shortened proof of Lemma 2.1 in the paper. This work was done when the first author visited Ege University, TURKEY, from the 9th June 2014 to the 15th June 2014 under the INSA-TUBA Exchange of Scientists Programme. The first author is grateful to INSA, India and TUBA, Turkey for the financial support provided for this visit
Potential of the bacterial strain Acidovorax avenae subsp. avenae LMG 17238 and macro algae Gracilaria verrucosa for denitrification
No full textIn this biological nitrate removal study, the performance of the bacterial strain Acidovorax avenae subsp. avenae LMG 17238 using different carbon sources such as ethanol, methanol, sodium acetate, glucose and poly(?-caprolactone) was investigated. Additionally the parameters such as an increase of nitrate concentration, carbon source amount (C/N) and dilution of a synthetic medium were studied. In laboratory conditions LMG 17238 and a mixed bacterial culture (soil suspension, wastewater treatment and macro algae Gracilaria verrucosa) have been immobilized as a comparative study to determine their efficiency in the biological denitrification of drinking water. For the continuous system as a carbon source, G. verrucosa was studied in fixed-bed columns. Various variables such as hydraulic retention time (HRT), mass amount of the substrate, and the initial nitrate concentration were investigated. A comparative study was achieved by using biodegradable poly(?-caprolactone) as a carbon source using a mixed bacterial culture (LMG 17238 and G. verrucosa) in a fixed-bed column. Also Monod type equations were used to model the denitrification kinetics. The study proves that, LMG 17238 can be successfully used with different carbon sources. G. verrucosa can be considered as a promising alternative to poly(?-caprolactone) with a maximum denitrification rate of 13.83 and 0.94mgNO3-N/Ld respectively. © 2011 Elsevier B.V.The authors would like to thank Dr. W. R. Müller, Dr. J. Mergaert and Prof. Dr. U. Obst for their support, which enabled this biological denitrification project. The authors would also like to thank A. Ata for her assistance in the preparation of this manuscript. The author B. Ovez, would like to thank DAAD for the scholarship, which enabled us to start the project work at Karlsruhe and Stuttgart Universities. This work was financed by the Research Foundation of Ege University , EBILTEM and TUBITAK . -
New skeletons and new concepts in Amaryllidaceae alkaloids
No full textThe Amaryllidaceae alkaloids, represent a group of isoquinoline alkaloids, which are produced almost solely by members of the Amaryllidaceae family. The alkaloids of this family have attracted considerable amount of interest due to some important pharmacological activities they were shown to possess. In the last decade, our phytochemical studies on four Galanthus (Amaryllidaceae) species of Turkish origin have yielded quite a number of new alkaloids with diverse structures. Among these alkaloids, gracilines and plicamines constitute two new subgroups for the Amaryllidaceae alkaloids. The gracilines contain an incorporated 10b,4a-ethanoiminodibenzo[b,d]pyrane skeleton. The plicamines are dinitrogenous compounds, where the oxygen atom in position 7 of a tazettine skeleton is replaced by a nitrogen atom substituted by a pendant 4-hydroxyphenethyl moiety. One of the new alkaloids, galanthindole, which possesses a nonfused indole ring, unlike the already known subgroups of Amaryllidaceae alkaloids, may be considered as the prototype of a third new subgroup of the Amaryllidaceae alkaloids. Additionally, two known isoquinoline alkaloids which do not possess one of the established skeletons of the Amaryllidaceae alkaloids, namely (-)-capnoidine and (+)-bulbocapnine, have been isolated from a Turkish Galanthus species. Totally, 21 new, 20 known alkaloids and 2 known lignans have been characterized. In this review, the isolation and structure elucidation of these compounds with interesting chemical structures are described. © 2007 Springer Science+Business Media B.V.this Galanthus project and directed it until they retired. The author would also like to express her gratitude to Prof. Manfred Hesse and Dr. Christa Werner (University of Zurich, Switzerland), to Prof. Robert Verpoorte (Leiden University, The Netherlands), to Prof. Carles Codina, Prof. Jaume Bastida and Prof. Francesc Viladomat (University of Barcelona, Spain) with whom we have collaborated during the course of the project. Special thanks are extended to Prof. Mustafa Ali Önür and Dr. G. İrem Kaya (Ege University, Turkey) for their precious contributions to the Galanthus project. Dr. Anita Latvala, Dr. Seda Noyan and Gülnur Akineri (MSc) are other scientists who collaborated during the course of the project. Their contributions to this work is greatly appreciated. This work was financially supported by the Scientific and Technical Research Council of Turkey (TÜBİTAK) and by the Ege Science and Technology Center (EBILTEM). -
Red meat and processed red meat consumption behaviour of healthcare professionals: Do they participate in the World Health Organization's view of red meat carcasses and red meat carcinogens?
No full textObjective: This study investigated the consumption behaviours of healthcare professionals in relation to red meat and processed red meat products.Design: This study included a questionnaire conducted through face-to-face interviews with 149 health professionals. The purpose of the questionnaire was to determine the extent to which health professionals agreed with the WHO classification of red meat and processed red meat on their list of carcinogenic products.Setting: This research was carried out in İzmir, which is Turkey's third largest city. The survey was conducted in 2016 by holding face to face interviews with forty-three specialist doctors, sixteen doctors, twelve dentists, sixty-four nurses and fourteen pharmacists.Subjects: Nationally representative sample of healthcare professionals in Turkey.Results: People educated in healthcare are especially cautious about the consumption of processed red meat products. The results of the research revealed the importance of processing and cooking patterns in red meat consumption preferences.Conclusions: The consequences of the research, in terms of breaking down prejudices and overcoming the anxieties of those with health concerns who do not consume red meat, are important. In fact, the results show that healthcare professionals consume red meat, but they are more careful in their consumption of processed red meat products. This result is in line with the WHO report. © 2019 The Authors.2015-ZRF-047Acknowledgements: The authors thank all the healthcare professionals who have given their precious time during the fieldwork and patiently answered the questions and sincerely responded. Financial support: This work was supported by the Ege University Scientific Research Projects Coordination (Project No: 2015-ZRF-047). Conflict of interest: None. Authorship: We worked together with N.D. in this study which I am responsible author. Also she is supervisor in my master course and ongoing PhD process. She has numerous national and international notifications and articles in the areas of food safety and food economics. N.D. teaches at university in these fields. This work contains a section from O.S.A.’s completed master thesis. The questionnaire form was designed and analysed together. Fieldwork was done by O.S.A. The Turkish language of this study was written together and translated by N.D. into English. It was send to a native speaker for proofreading by O.S.A., who can offer the paper showing that this work is edited by a native English speaker, if requested. Ethics of human subject participation:This study was conducted according to guidelines laid down in the Declaration of Helsinki and all procedures involving human subjects were approved by the Ege University. Verbal consent was witnessed and formally recorded
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