Osmaniye Korkut Ata University Academic Repository
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Investigation of Simple Shape Descriptors for NACA 4 Digit Airfoils
No full textThis study aims to define new simple shape descriptors to analyze airfoils. The ImageJ platform is used to calculate twelve different shape descriptors such as area, convex hull, contour temperature and solidity by performing image processing. One of the most important findings is that an increase in the thickness of an airfoil leads to corresponding increases in its area, perimeter, area of minimum enclosing area, and convex hull area. Another noteworthy discovery is that the values derived from these basic features, either increasing or decreasing. Simple shape features in the study are not used independently, as they do not possess distinct characteristics that set them apart from one another. Machine learning and deep learning applications can achieve greater success when these features are combined with other elements. The combination of these features with other shape attributes, such as chain code histograms, shape signatures, and central moments, can enhance the success of machine learning and deep learning applications
Sustainable electrocatalyst for PEM water electrolyzers
No full textWater electrolysis represents a key technological advancement for the sustainable production of hydrogen by harnessing renewable electrical energy. The Polymer Electrolyte Membrane Water Electrolyzer (PEMWE) stands out for its superior performance and dynamic response in converting chemical energy into hydrogen. This functionality positions PEMWE as an ideal solution for meeting the intermittent nature of clean energy sources and the demands of the electrical grid over various periods and scales. The growing interest in PEMWE technology is driven by the pressing imperative to tackle the energy and environmental crises precipitated by the extensive reliance on fossil fuels. PEMWE faces challenges with slow reaction kinetics, leading to inefficient energy conversion. Enhancing charge and mass transfer through innovative electrocatalysis at the electrode-electrolyte interface is essential for boosting energy efficiency and ensuring the longevity of such technologies. Current research is aimed at creating sustainable electrocatalysts for critical reactions like oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), which are essential for advancing PEMWE. This review examines the latest progress in developing sustainable electrocatalysts for large-scale PEMWE applications. We cover the state of electrocatalyst technology, the hurdles in creating sustainable options, new approaches in electrocatalysis, emerging materials, and their environmental and economic impacts. Future research directions to facilitate PEMWE's large-scale application with improved efficiency, durability, and cost-effectiveness are also discussed. © The Author(s). All rights reserved
Is It Possible to Prevent Organizational Broken Windows with an Organizational Spirituality Shield? From the Disaster of the Century to the Solidarity of One
No full textPurpose – The main objective of this study was to examine the relationship between perceived organizational spirituality and organizational broken windows of employees who were directly affected by the Kahramanmaraş earthquakes. In addition, it was aimed to determine whether the mentioned variables varied according to the demographic characteristics of the participants. Design/methodology/approach – The sample of the research, designed in descriptive and crosssectional type, consisted of earthquake victims (n=226) who were directly affected by the Kahramanmaraş earthquakes and working in one of the two production enterprises during June when the research data were collected. The data were collected using the Organizational Spirituality Scale and Organizational Broken Windows Scale. SPSS 26 and AMOS 24 package programs were used in the analysis of the data. Findings – According to the findings, it was determined that organizational spirituality had a negative (β: -.764) effect on organizational broken windows. In addition, according to the parametric test results conducted between organizational spirituality and organizational broken walls and demographic variables, it was found that there was a statistically significant difference between the participants' organizational spirituality levels and gender, marital status, age and total duration of professional experience. Similarly, a statistically significant difference was found between the participants' perception of organizational broken windows and gender, marital status, age and total duration of professional experience. Discussion – The meaning that earthquake victim participants attach to their work and the commitment they have with a sense of responsibility for their community and compliance with organizational values will allow them to avoid attitudes and behaviors (broken windows) that may threaten the institution and the social order
A New Natural Source against A549 Lung Cancer Cells Anthemis cotula and its Biological Activities and Phenolic Contents
No full textThe objective of this study was to assess the biological activities of Anthemis cotula L. and explore its potential therapeutic effects on A549 lung cancer cells. Within this particular framework, the aerial components of the plant were collected and subjected to extraction using a Soxhlet apparatus to obtain extracts in the form of water, ethanol, and methanol. The determination of the phenolic content of the samples was conducted using the Folin-Ciocalteu reagent, while the quantification of flavonoid content was conducted via an aluminum chloride assay, and the measurement of the plant's total antioxidant, total oxidant, and oxidative stress index was conducted using Rel Assay kits. The antimicrobial properties of the substances were examined via the agar dilution technique. The MTT assay was employed to determine the antiproliferative activity against A549 lung cancer cells, and the LC-MS/MS instrument was utilised to screen for the presence of standard compounds. The following compounds were identified in the study: acetohydroxamic acid, catechin hydrate, vanillic acid, resveratrol, kaempferol, fumaric acid, gallic acid, protocatechuic acid, 4-hydroxybenzoic acid, caffeic acid, salicylic acid, 2-hydroxycinnamic acid, naringenin, quercetin, luteolin, and alizarin. Plant extracts were found to be effective against microorganisms in the range of 25 to 200 mu g/mL; furthermore, the water extract exhibited the highest total antioxidant status value of 8.201 +/- 0.113 mu mol/L. Similarly, the ethanol extract demonstrated the highest total oxidant status value of 11.247 +/- 0.178 mu mol/L, while, lastly, the methanol extract displayed the highest oxidative stress index value of 0.151 +/- 0.001. Strong antiproliferative activity was observed in all the plant extracts, and the ethanol extract with the highest concentration exhibited a total phenolic content of 61.78 +/- 4.38 mg/g. The ethanol extract exhibited the highest recorded total flavonoid content, measuring 66.84 +/- 3.13 mg/g. In the present context, it has been observed that the plant demonstrates significant biological activities; consequently, A. cotula is believed to possess significant potential as a valuable resource in the development of pharmacological designs
Kahve Tüketiminin Meme Kanserine Karşı Koruyucu Etkisi
No full textMeme kanseri gelişiminde önemli risk faktörü tanımlanmaktadır. Öte yandan koruyucu faktörler de güncel araştırmaların konusu olmaktadır. Bu nedenle, bu çalışmada kadınlardaki kahve tüketiminin meme kanserine karşı koruyucu etkisinin araştırılması amaçlanmıştır. Ocak 2022-Mayıs 2022 tarihleri arasında Onkoloji kliniğinde meme kanseri tanısıyla takip edilen (1. grup, n=72) ve meme ile ilgili herhangi bir hastalığı veya şikâyeti olmayan (2. grup, n=212) kontrol grubundaki kadın hastalar gözlemsel olarak incelenmiştir. Hastaların demografik verileri (yaş, cinsiyet), yandaş hastalık varlığı, menopoz durumu, beden kütle indeksi (BKİ), toplam vücut ve gövde yağ oranları (%) ile kahve tüketim miktarları kaydedilmiştir. Hastaların yaşları ortalama 49,68±11,43 yıl olarak bulunmuştur. Kontrol grubundaki hastaların kahve tüketimleri, 1. gruptakilere kıyasla daha fazla tespit edilmiştir (p=0,01). Günlük kahve tüketimi ile meme kanseri gelişme oranı arasında negatif ve anlamlı bir ilişki olduğu gözlenmiştir (p<0,05). Sonuç olarak; kadınlarda görülen meme kanseri ile kahve tüketimi arasında ilişki olduğu tespit edilmiştir. Kahve tüketiminin meme kanserine karşı koruyucu etkisinin olabileceğine dair bulguların epidemiyolojik çalışmalar ile desteklenmesine ihtiyaç vardır
AMİNE VEDÛD MUHSİN. KUR'ÂN ve KADIN. Çev. NAZİFE ŞİŞMAN. İSTANBUL: İZ YAYINCILIK, 2000, 167 SAYFA.
No full textBu çalışma, Amine Vedud'un Kur'an ve Kadın adlı eserinin tanıtım ve değerlendirmesini içermektedir
Postpartum Dönemdeki Kadınlarda Algılanan Sosyal Destek ve Postpartum Anksiyete Arasındaki İlişki
No full textAmaç: Bu çalışma postpartum dönemdeki kadınlarda algılanan sosyal destek ve postpartum anksiyete arasındaki ilişkinin belirlenmesi amacıyla yapılmıştır. Yöntem: İlişki arayıcı tipte olan bu çalışmanın örneklemini 222 lohusa oluşturmuştur. Çalışma verileri Ocak 2021- Nisan 2022 tarihleri arasında çevrimiçi anket ile toplanmıştır. Verilerin toplanmasında Kişisel Bilgi Formu, Çok Boyutlu Algılanan Sosyal Destek Ölçeği ve Doğum Sonrasına Özgü Anksiyete Ölçeği kullanılmıştır. Bulgular: Kadınların Çok Boyutlu Algılanan Sosyal Destek Ölçeği puan ortalamasının 62,91±16,18 ve Doğum Sonrasına Özgü Anksiyete Ölçeği puan ortalamasının 112,17±4,82 olduğu belirlenmiştir. Eğitim durumu üniversite ve üzeri olanlarda, kendisinin ve bebeğinin bakımında destek alan ve sağlık personelinden kendi ve bebeğinin bakımına yönelik bilgi alan kadınlarda algılanan sosyal destek puanı daha yüksektir (p< 0,05). Kadınlarda algılanan sosyal destek ile postpartum anksiyete toplam puanı arasında pozitif yönde ve zayıf düzeyde anlamlı bir ilişki olduğu saptanmıştır (r= 0,236, p= 0,001). Sonuç: Kadınların algıladıkları sosyal destek arttıkça anksiyete düzeyinin de arttığı saptanmıştır
The Role of Energy Consumption and Economic Growth on Human Development in Emerging (E-7) Countries: Fresh Evidence from Second-Generation Panel Data Analyses
No full textThis study aims to examine the impacts of energy consumption and economic growth on the human development index of seven emerging countries (E-7) with high economic performance for yearly observations from 1992 to 2021. The analyses were carried out with second -generation panel data analyses: (i) Panel cointegration test with structural breaks proposed by Westerlund (2006), (ii) augmented mean group estimator recommended by Eberhardt and Bond (2009), and (iii) Dumitrescu and Hurlin (2012) panel causality test. The empirical model also included trade openness and urbanization parameters as control variables. The panel cointegration test outcomes reveal the presence of a long -run relation among the human development index and energy consumption, economic growth, urbanization, and trade openness for all countries. Augmented mean group test outcomes signify that energy consumption, economic growth, and trade openness have positive and statistically significant impacts on the human development index, whereas urbanization does not have any statistically significant impact in the longrun. Finally, panel causality test results signify that there is a bidirectional relation between the human development index and energy consumption, economic growth, and trade openness and also a unidirectional relation from urbanization to the human development index in E-7 countries. All these findings indicate that the main macroeconomic indicators have an important role on the human development index in E-7 countries. In this context, these countries should implement a more effective and innovative economic policy for Sustainable development goals
MEHMED SA‘ÎD EFENDİ’NİN MANZUM KASÎDE-İ EMÂLÎ TERCÜMESİ: TEVHÎDNÂME
No full textTürk edebiyat tarihi, telif türündeki eserler yönünden olduğu kadar tercüme ve şerh türünden eserler bakımından da oldukça zengindir. Bilhassa İslâmiyet’in kabulüyle birlikte toplumda sağlam bir itikat ve iman şuurunun tesisine yönelik Arapça kaleme alınmış bazı eserler üzerine yapılan tercüme ve şerhler, bunlar arasında önemli bir yer işgal eder. Bu meyanda Arapça tanzim edilen Ka‘b b. Züheyr’in (öl. 24/645) Kasîde-i Bürde’si, Ebu’l-Feth Büstî’nin (öl. 400/1010) Kasîde-i Nûniyye’si, Tantarânî’nin (öl. 485/1092) Kasîde-i Tantarâniyye’si, İbnü’n-Nahvî’nin (öl. 513/1119) Kasîde-i Münferice’si, İbn-i Fârız’ın (öl. 632/1235) Kasîde-i Hamriyye’si ve Muhammed b. Saîd el-Bûsîrî’nin (öl. 695/1296) Kasîde-i Bür’e’si akla ilk gelen eserlerdir. Zikredilen bu eserler dışında iman esaslarının fertlerden başlayarak bütün toplum tarafından mezcedilmesi için Sirâceddîn Ali b. Osman el-Ûşî’nin (öl. 575/1179) akaidname türünde yazdığı Kasîde-i Emâlî de Türkçeye en fazla tercüme ve şerhi yapılan eserler arasında yer alır. Şimdiye kadar yapılan bilimsel çalışmalar vesilesiyle bu kasidenin Türkçe 12 şerhiyle birlikte; 12 manzum, 2 de mensur tercümesinin varlığı ortaya konmuştur. Oldukça rağbet gören bu kasideyi nazmen Türkçeye tercüme edenlerden biri de 18. yüzyılın önde gelen astronomi ve geometri âlimlerinden biri olan Mehmed Sa‘îd Efendi’dir. Bu çalışmada mütercimin 1141/1728-29 yılında kaleme alıp Tevhîdnâme adını verdiği manzum Kasîde-i Emâlî tercümesinin şekil ve muhteva özellikleri üzerinde bazı değerlendirmelerde bulunulduktan sonra çeviri yazılı metnine yer verilmiştir
Modeling the Change in Amino Acid and Peptide Contents during the Aging of Bottled-Fermented Sparkling Wines by Image Processing Methods
No full textIn this study, natural sparkling wine was produced using a mixture (1:1) of Emir and Dimrit grapes harvested (Around the Urgup District of Turkey). The change of free amino acid and peptide contents in sparkling wine depending on the aging time and yeasts (free and immobilized forms of the Saccharomyces bayanus and Saccharomyces oviformis) used in the second fermentation stage were examined by image processing methods. The immobilized yeasts were determined as more than the free ones along the second fermentation. It was also determined that the yeast type does not have a significant effect on both the peptides and free amino acid contents of sparkling wines and these contents were divided into 3 classes from high to low by measuring separately along the aging time. The amino acid contents of sparkling wines reached the highest level between the 335th and 365th days of aging time and also exceeded the amino acid contents of base wine