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Relationships Between Partial Milk Yield and Actual Milk Yield According to Parity in Buffaloes
No full textIn this study, the relationships between 100-day of partial milk yield and 270-day of additive and total milk yield of buffaloes according to different parity were investigated. A total of 697 lactation records belonging to 135 heads of buffalo and seven lactations were used in the material. The relationships between the animals' 100-day partial milk yield for 270-day and total milk yield were analyzed for seven lactations. In the study, 100-day milk yield was taken as an independent variable, 270-day and total milk yields as dependent variables, and possible relationships were determined according to simple and multiple linear regression analysis methods. The average lactation period was 256.74 ± 2.61 days, the average 270-day additive milk yield was 2078 ± 65.26 litres and the average total milk yield was 1831 ± 89.57 litres. The daily average milk yields were 7.69 ± 0.11 and 7.08 ± 0.07 liters for 270-day and 100-day respectively. The correlation coefficients were calculated for each parity and calculated as 0.901 (p < 0.01) between the 100-day and 270-day additive yield for the general group. The simple and multiple linear regression equations were shown as [V270 = 470.72 + 1.737 V100 (R2 = 80.2%)], [V270 = 966.23 + 0.645 V100 + 0.001V1002 (R2 = 82.4%)] for the groups. As the parity of lactation increased, it was seen that the determination coefficients were increased. Finally, predicting the total lactation yield by using 100-day of partial milk yield has the highest accuracy. © 2024, Centenary University. All rights reserved
Determination of Agricultural Mechanization Level in Kahramanmaraş with Poisson Regress by District
No full textIn this study, agricultural mechanization level indicators of the districts of Kahramanmaraş between the years 2012-2021 were calculated. A model has been established for this. While the dependent variable in the model is the agricultural areas planted in the districts according to the years, the independent variables are the number of tractors in the districts according to the years and other determined tools, equipment and machines. Poisson regression test was used, there was 25.022 chi-square probability relationship between the planted agricultural areas in Kahramanmaraş districts between 2012 and 2021, with the number of tractors in the districts and other determined equipment by years. At the level of agricultural mechanization, it was determined that there was a 3.32 decrease in the average number of tractors per 1000 hectares of land in Kahramanmaraş districts between 2012 and 2021, and a decrease of 12.45 in the number of specific equipment per tractor over the years. Among this decrease, it was thought that reasons such as climate change, input costs and job change were among the main reasons for leaving agriculture. In the comparison made from 2012 to 2021, the number of tractors in all districts increased by 54.18%, while the number of tractor equipment was also observed. An increase of 46.11% was observed. In addition, as a result of the trend analysis value applied, it was concluded that the average absolute percentage errors in the districts were 4.10443, the average number of tractors per 1000 hectares by years, and the number of specific equipment per tractor in the districts according to the years was 1.96718, which is a good estimation
The effect of environmental competitiveness, customer and competitor orientation on export performance
No full textPurposeCustomer orientation (CO) means meeting customers' needs better than competitors. Competitor orientation means using and acting upon the knowledge of competitors. Thus, the main aim of this study is to analyze the effects of environmental competitiveness on export performance by examining the moderating roles of these variables. Design/methodology/approachBased on data from 5,000 firms from a survey run in 2021 in Turkey facilitated by the Chamber of Commerce, the authors tested their hypotheses using partial least squares structural equation modeling and correlation analysis. FindingsThe results show that competitor orientation positively affects the relationship between a competitive environment and export performance. However, the authors do not find evidence of a significant effect on CO. Practical implicationsService sector managers should sacrifice customers to gain export market share in favor of superiority with competitors. Originality/valuePrior research has yet to emphasize the importance of competition intensity in export performance for service-logistics firms. However, the environmental competitiveness-performance relationship is better explained with the help of these test results and the two additional moderators suggested in this work. Moreover, the export performance indicators were gathered from an independent source
Opinions of NKU Faculty of Medicine Intern and Resident Doctors on Distance Medicine Education During the COVID-19 Pandemic Period
Get PDFAim: Throughout world history, people in the pandemic have not only been in danger of their physical health but also seriously affected their mental health. To prevent the spread of the virus during the COVID-19 pandemic, the Council of Higher Education of our country has closed schools and conducted education and training via online education. Therefore, the anxiety, uncertainty and closure of schools by the epidemic caused anxiety. The aim of our study; The effect of the COVID-19 pandemic on medical faculty student education is to evaluate the satisfaction of students from distance education applications. Materials and Methods: Our study is a cross-sectional descriptive type and was conducted on 321 students studying in the 4th, 5th and 6th grades Tekirda & gbreve; Nam & imath;k Kemal University Faculty of Medicine in the 2021-2022 academic year. A survey including students' sociodemographic characteristics and distance education perspective was applied to collect data. The data were evaluated with statistical analysis. Results: Of the participating students, 85 were in 4th-grade, 157 were in 5th-grade, 79 were 6th-grade medical students. Answers to the question If there was a second choice, would you choose the faculty of medicine? 119 stated that they would choose the medical faculty again, 102 stated that they would not, and 100 stated that they were undecided. Answers to the question What is your preferred education system option from today 17 of the students preferred only the online education system, 127 only the face-to-face education system, and 177 preferred the system with online and face-to-face education have stated. Conclusion: In terms of students' answers to the survey, it was seen that their level of perspective on distance education was undecided and it was determined that many factors affected distance education satisfaction. As a result, medical faculty students' anxiety increased during the pandemic period and they were less satisfied with the distance education syste
Bibliometric Analysis of Multiple Sclerosis Studies in Pharmacology Journals
No full textMultiple sclerosis (MS) is a prevalent neurological disease with a global impact on patients' lives. Our study aimed to conduct a bibliometric analysis of research published in the field of pharmacology over the past decade. We retrieved original articles on MS from pharmacology journals in the last ten years through the Scopus database. The collected data underwent analysis using VOSViewer software, examining relationships between studies based on parameters such as citation, authorship, and organizations. In our country-based analysis, the United States emerged with the highest document count, totaling 350, followed by Germany with 210 documents. Claudio Viegas holds the top position with four publications in the last decade. The most prolific organization identified was associated with the Biogen-Cambridge-MA-United States group. However, Chulalongkorn University in Bangkok, Thailand, specifically the Department of Psychiatry, received the most citations. The most cited document was \"Therapeutic Advances in Neurological Disorders,\" while the study with the highest citations was Ferreria-Vieira et al.'s (2016) work published in Current Neuropharmacology. Research efforts on MS treatment are evidently growing, with diverse research groups contributing worldwide. We anticipate that our study will provide valuable guidance to researchers in the field by shedding light on significant research and their interconnections in recent years
Baş Boyun Metastatik Adenoid Kistik Karsinomu Olgu Sunumu
No full textAmong head and neck cancers, adenoid cystic carcinoma (ACC) has a separate place compared to other histological types. Our case report is about the follow-up of a patient with ACC originating from the left parotid gland, who applied to our clinic for about 10 years, after different treatments were applied in different centers
I. İklim Değişikliği ve Sürdürebilirlik Çalıştayı
Get PDFİklim değişikliği ve küresel ısınma sanayi devriminden sonra dünyanın gündemine girmeye başlamış ve günümüzün en önemli sorunlarından biri haline gelmiştir. İklim dinamik bir süreçtir. Bu değişiklikler süreklilik arz etmesine rağmen sanayi devriminden günümüze kadar olan artışta insan faaliyetlerinin önemli etkileri vardır. Son 150 yılda dünya ölçeğindeki 1,3 °C’lik artış, Avrupa’da 2,3 °C ile dünya ortalamasının 1 °C üzerindedir. Bu artış dalgalanmalar göstermekle birlikte 1970’lerden günümüze süreklilik arz etmektedir. Dünyanın birçok yerinde başta Birleşmiş Milletler, Avrupa Birliği gibi kuruluşlar bu artışlara çözüm olarak birçok faaliyet yürütmektedir. Ancak ortaya konulan raporlar ve protokoller çözüm üretememiş ve sıcaklıklar artmaya devam etmiştir. 1960’larda karbondioksit değerleri 291 ppm iken günümüzde 418 ppm olmuştur. Isınma dünyanın her bölgesinde aynı değildir. En riskli bölgelerin başında orta kuşak gelmektedir. Subtropikal iklim kuşağı içinde yer alan ülkemizde Güneydoğu Anadolu Bölgesi ve çalıştayı gerçekleştirdiğimiz Siirt ilindeki öngörülen değişiklik 5 °C’nin üzerinde olacağı tahmin edilmektedir. Bu duruma bölgemizi ve şehrimizi hazırlamalı ve adaptasyon süreçleri ile alakalı daha fazla bilimsel çalışma yapılmalıdır
Effect of partial replacement of dimethyl sulfoxide with dextran, polyvinylpyrrolidone or polyethylene glycol on post-thaw drone semen quality and queen fertility
No full textThe aim of this study was to elucidate the toxicity effect of widely used penetrating cryoprotective agent dimethyl sulfoxide (DMSO) on frozen drone semen and fertility. DMSO was replaced totally or partially with either dextran, polyvinylpyrrolidone (PVP), or polyethylene glycol (PEG), which are non-penetrating cryoprotectants. The freezing extender with 12%, 8%, 4% and 0% DMSO were supplemented with 0%, 4%, 8% and 12% of dextran, PVP, or PEG, respectively. For all treatment groups, the final cryoprotectant concentration was 12%. Dextran4, PVP4, and DMSO12 groups with good post-thaw motility, plasma membrane functional integrity that evaluated throughout the study and fresh semen were used for queen instrumental insemination (n=46). Two queen bees (4.4%) died due to manipulation. Alive queens [24 (55%) of 44] had been observed to survive after a week, and 17 (71%) of these queens continued to survive after three months. At the end of three months, 15 (88%) of the alive queens continued to produce worker bees. There were no differences among insemination groups (P>0.05) for the rate of survival for three months and presence of worker broods. After overwintering, there were two queens from the PVP4 and three queens from the Dextran4 group that survived and one queen from PVP4 and two queens from Dextran4 group that continued to produce worker bees. In conclusion, addition of 4% Dextran or PVP as an extender containing 8% DMSO solution improves queen bees' worker egg-laying period, but the same results were not observed for the PEG containing groups.Scientific and Technological Research Council of Turkey (TUBITAK) [TOVAG215O586]This work was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) , Project Number: TOVAG215O586
Solitons of the Twin-Core Couplers with Fractional Beta Derivative Evolution in Optical Metamaterials via Two Distinct Methods
No full textThe rapid advancements in metamaterial research have brought forth a new era of possibilities for controlling and manipulating light at the nanoscale. In particular, the design and engineering of optical metamaterials have created advances in the field of photonics, enabling the development of advanced devices with unprecedented functionalities. Among the myriad of intriguing metamaterial structures, the nonlinear directional couplers with beta derivative evolution have emerged as a significant avenue of exploration, offering remarkable potential for light propagation and manipulation. This study obtains the solitary wave solutions for twin-core couplers having spatial-temporal fractional beta derivative evolution by using two different methods, the Bernoulli method and the complete polynomial discriminant system method. By graphing some of the obtained solutions, the effect of the beta derivative has been shown. The findings would be beneficial to understand physical behaviours in nonlinear optics, particularly twin-core couplers with optical metamaterials
Tekirdağ İli Süt Sığırcılığı İşletmelerinde Buzağı Ölümlerinin Araştırılması
No full textSığırcılık işletmelerinde buzağıların yaşama gücü oranı, işletmedeki buzağı ölümleri hakkında bilgi vermekte olup bir işletmede belli bir döneme kadar yaşayan buzağı sayısının canlı doğan buzağı sayısına bölünmesiyle elde edilmektedir. Yeni doğan buzağıların sağlığını ve yaşama gücünü ırk, besleme, iklim, hastalıklar, barınak, hijyen, doğum tipi, cinsiyet gibi unsurlar etkilemektedir. Tekirdağ ilinde süt sığırcılığı işletmelerinde buzağı ölümleri ile ilgili yapılan bu çalışma, şansa bağlı seçilen 207 adet süt sığırcılığı işletmesinden yüz yüze yapılan anket yolu ile toplanan veriler değerlendirilerek yapılmıştır. Ankette işletmelerin yapısal özellikleri ve işletme içi uygulamalara değinilerek işletmelerin buzağı bakım, besleme ve ölümleri incelenmiştir. İşletmelerde yetiştirilen toplam hayvan sayılarının %15.9’u 0-5 baş, %26.6’sı 6-10 baş, %31.4’ü 11-20 baş, %18.4’ü 21-30 baş, %7.7’si ise 31 ve üzeri baş olarak tespit edilmiştir. İşletme sahiplerinin %71.5’i ilkokul, %14’ü ortaokul, %12.1’i lise, %2.4’ü üniversite mezunu olduğu belirlenmiştir. İşletmelerde gebe hayvanlara septisemi aşısı yaptırma oranı %45.9, doğumdan sonra buzağılara septisemi serumu uygulama oranı %69.1 olarak tespit edilmiştir. Buzağı ölüm oranı %5 olan işletmelerin oranı %33.8, ölen buzağıların %48.3 oranında 1-7 gün arasında yaşam süresi bulunduğu, %18.2 oranında ise ölen buzağıların annesi olan ineğin başka buzağılarının da öldüğü saptanmıştır. Buzağı ölümlerinde ishalin önemli bir yer tuttuğu belirlenmiş olup prebiyotik ve probiyotik kullanımının arttırılması, bakım, besleme, hijyen ve koruyucu sağlık uygulamaları olan aşılamalara daha fazla özen gösterilmesi ile ölüm oranlarının azaltılabileceği söylenebilir. Buzağı kaybı olarak nitelendirilebilecek diğer bir konu ise servis periyodunun uzun olmasıdır. Doğumdan sonra tekrar gebe kalma arasındaki geçen süre olan servis periyodunun uzaması, farklı nedenler sonucu ortaya çıkmaktadır. Servis periyodunun optimum sürelere indirilmesinin ise işletmelerde; teknik personel istihdamı, tekniğine uygun bakım ve besleme uygulamaları, kızgınlık tespit uygulamaları ve gözlem sürelerinin arttırılması, yeterli sayı ve nitelikte personel istihdamı ve suni tohumlama tekniği uygulamalarına bağlı olmaktadır. Yapılan bu çalışmadan elde edilen sonuçlar, süt sığırcılığı alanında faaliyet gösteren işletmelerin buzağı ölüm oranlarını azaltıcı tedbirler almaları ve kayıt tutma ile bu oranları düzenli olarak takip ve kontrol etmeleri gerektiği sonucunu ortaya çıkarmıştır