Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Gul, Muhammet(85)
- Serdar, Osman(72)
- Güler, Ömer(68)
- Akkurt, Nevzat(61)
- Baskonus, Haci Mehmet(54)
- Alataş, Mevlüt(53)
- Paksoy, Mehmet Yavuz(53)
- Yucesan, Melih(53)
- Bulut, Hasan(51)
- Tekin, H.O.(51)
- ALMisned, Ghada(48)
- Yildirim, Numan(48)
- Benzer, Fulya(47)
- Kocabaş, Mehmet(45)
- Yildirim, Nuran Cikcikoglu(44)
- Kutlu, Banu(41)
- Ince, Muharrem(39)
- Zengin, Gokhan(39)
- Batan, Nevzat(37)
- Utku, Anıl(35)
- Celik, Erkan(33)
- Topal, Murat(32)
- Ezer, Tülay(31)
- Tanyol, Mehtap(31)
- Can, Erkan(30)
- Sulaiman, Tukur Abdulkadir(29)
- Aslan, Naim(28)
- Özkul, İskender(28)
- Aslan, Alper(27)
- Cakilcioglu, Ugur(27)
- Erguven, Gokhan Onder(27)
- Kutluyer, Filiz(27)
- Kök, Mediha(27)
- Ates, Mehmet(26)
- Erten, Fusun(26)
- Kahraman, Gökhan(26)
- Onat, Onur(26)
- Dal, Nursel Alp(25)
- Danabas, Durali(25)
- Say, Yakup(25)
Yayınlar
- MakaleYalnız künye2018Scopus SJRQ3Curcumin ameliorates doxorubicin-induced cardiotoxicity by abrogation of inflammation, apoptosis, oxidative DNA damage, and protein oxidation in rats
Benzer, Fulya; Kandemir, Fatih Mehmet; Ozkaraca, Mustafa; Kucukler, Sefa; Caglayan, Cuneyt
Doxorubicin (DXR) is a highly effective drug for chemotherapy. However, cardiotoxicity reduces its clinical utility in humans. The present study aimed to assess the ameliorative effect of curcumin against DXR-induced cardiotoxicity in rats. Rats were subjected to oral treatment of curcumin (100 and 200 mg/kg body weight) for 7 days. Cardiotoxicity was induced by single intraperitoneal injection of DXR (40 mg/kg body weight) on the 5th day and the rats sacrificed on 8th day. Curcumin ameliorated DXR-induced lipid peroxidation, glutathione depletion, decrease in antioxidant (superoxide dismutase, catalase, and glutathione peroxidase) enzyme activities, and cardiac toxicity markers (CK-MB, LDH, and cTn-I). Curcumin also attenuated activities of Caspase-3, cyclooxygenase-2, inducible nitric oxide synthase, and levels of nuclear factor kappa-B, tumor necrosis factor-α, and interleukin-1β, and cardiac tissue damages that were induced by DXR. Moreover, curcumin decreased the expression of 8-OHdG and 3,3′-dityrosine. This study demonstrated that curcumin has a multi-cardioprotective effect due to its antioxidant, anti-inflammatory, and antiapoptotic properties.
AtıfScopus154WoS143OpenAlex163
İncele - MakaleYalnız künye2018Scopus SJRQ3Investigation of biochemical response in rainbow trout (Oncorhynchus mykiss, Walbaum, 1792) exposed to remazol brillant blue R textile dye
Yildirim, N.C.; Dogan, L.
The dyes used in textile industry production are toxic substances and most of them have polymer structures. These dyes pollute the aquatic environment via various stages such as printing and dyeing, and may cause molecular, cellular, biochemical and physiological disorders. The aim of the present study was to evaluate effect of a highly toxic azo dye, Remazol Brillant Blue (RBBR) on the biochemical responses of rainbow trout, Oncorhynchus mykiss. The fishes were exposed to 0.5, 1 and 2 mg/l of RBBR for 24 and 48 h. The glutathione S-transferase (GST), cytochrome P-450 (CYP1A1) and lactate dehydrogenase (LDH) enzyme activities of these groups were measured. Present dye altered the activities of all these enzymes in the selected tissue of the experimental fish in a dose-dependent manner. According to the results of this study, after dye exposure, the alteration of selected enzymes indicated deterioration in antioxidant defense system, aerobic respiration processes and biotransformation mechanism induced by the tested dye. It was also shown that GST, CYP1A1 and LDH enzymes may be useful as biomarkers in determining the toxic effects in O. mykiss exposed to the RBBR textile dye.
AtıfScopus2İncele - MakaleYayıncıda açık erişim2018Scopus SJRQ3A FUZZY DEMATEL MODEL PROPOSAL FOR THE CAUSE AND EFFECT OF THE FAULT OCCURRING IN THE AUXILIARY SYSTEMS OF THE SHIPS’ MAIN ENGINE
Balin, A.; Demirel, H.; Celik, E.; Alarcin, F.
The ship engine room has a structure that meets a number of needs related to administrative conditions. Even if a simple mechanical error is considered to be the addition of human errors into the complex structure of the engine room, it can lead to undetected loss. How the causes and effects of the detected faults affect the system is as important as an effective fault detection system to detect the fault and take immediate action against any possible engine failure. This study reveals the causes of problems occurring in the main engine auxiliary systems including cooling, lubricating, cooling oil and fuel systems, and the extent of these problems affecting the system. While the Decision Making Trial and Evaluation Laboratory supports to identify and analyze the error detection of auxiliary systems with respect to causal effect relation diagram, fuzzy sets deal with the uncertainty in decision-making and human judgements through the DEMATEL. Therefore, fuzzy DEMATEL approach is applied to examine the causes and the weights of the faults and their relation to each other in the auxiliary systems. When we look at the result of the proposed approach, fuel oil pump failures has more impact on the all system and air cooler problems has the second highest place among the all errors.
AtıfOpenAlex1İncele - MakaleAçık Erişim2018Scopus SJRQ2Observations of crayfish plague infections in commercially important narrow-clawed crayfish populations in Turkey
Kokko, Harri; Harlioglu, Muzaffer M.; Aydin, Hamdi; Makkonen, Jenny; Gökmen, Gökhan; Aksu, Önder; Jussila, Japo
We studied the presence of possible Aphanomyces astaci infections in eight Turkish narrow-clawed crayfish (Astacus leptodactylus) populations by analyzing the prevalence and genotypes of the disease agent A. astaci. The qPCR analyses revealed A. astaci infection in seven of the studied eight populations, with the agent level A2 or higher. The agent levels among the infected populations varied from A0 to A5, i.e., from negative to high level of infection, based on qPCR ranking. Based on the sequencing of the chitinase gene and the mitochondrial ribosomal rnnS and rnnL subunits, we detected both A (As) and B (PsI) haplogroups of A. astaci in our samples, with each of the studied populations being carriers of only one haplotype. The results confirm previous detections of A. astaci in Turkish narrow-clawed crayfish populations and reveal, that both A and B haplogroup A. astaci carriers exist widely in A. leptodactylus populations of Turkey.
AtıfScopus28WoS29OpenAlex23İncele - MakaleAçık Erişim2018Scopus SJRQ1The investigation of the shelf life at 2 ± 1 °C of Luciobarbus esocinus fillets packaged with films prepared with the addition of different essential oils and chitosan
Karaton Kuzgun, Nermin; Gürel İnanlı, Ayşe
In this study, the chemical, microbiological and sensory changes during storage at 2 ± 1 °C of Luciobarbus esocinus fillets coated with edible films prepared with chitosan incorporation of thyme, clove, rosemary essential oils were examined. To create the experimental samples, a total of six groups of L. esocinus fillets coated with different edible films (normal, vacuum-packed, chitosan, chitosan with added thyme oil, chitosan with added clove oil, and chitosan with added rosemary) were used. The food composition of the fillets and experimental samples were determined after they had been coated with edible films. The results of analysis showed that, the preservation period of fresh fillets ended on day 12th, that of vacuum-packed fillets on day 15th, that of fillets coated with chitosan incorporation of rosemary on day 27th, that of fillets coated with chitosan incorporation of thyme and chitosan incorporation of cloves on day 30th. In comparison with the control group, fish spoilage was significantly delayed in samples coated with chitosan incorporation of thyme and chitosan incorporation of cloves (p < 0.05). The lowest bacterial growth, values of PV, TBA and TVB-N were obtained in fish samples coated with thyme + chitosan and cloves + chitosan. In terms of the general acceptability of the fish, as determined by qualified panelists, it was determined that the highest score was given to the experimental group to which essential oil of clove had been applied.
AtıfScopus16WoS12OpenAlex17İncele - MakaleAçık Erişim2018Scopus SJRQ2Investigations of dark, bright, combined dark-bright optical and other soliton solutions in the complex cubic nonlinear Schrödinger equation with δ-potential
Baskonus, Haci Mehmet; Sulaiman, Tukur Abdulkadir; Bulut, Hasan; Aktürk, Tolga
In this study, using the extended sinh-Gordon equation expansion method, we construct the dark, bright, combined dark-bright optical, singular, combined singular solitons and singular periodic waves solutions to the complex cubic nonlinear Schrödinger equation with δ-potential. The conditions for the existence of the obtained solutions are given. To present the physical feature of the acquired result, the 2D and 3D graphs are plotted under the choice of suitable values of the parameters.
AtıfScopus73OpenAlex76İncele - MakaleYalnız künye2018Scopus SJRQ2Effect of the novel biodegradable copolymer and soil salinity on the growth of corn plant
Torğut, Gülben; Beker Akbulut, Gülcin
Biodegradable and biocompatible poly (1,2-epoxy-3-phenoxy propane)-co-(ε-caprolactone) poly(EPP-co-ε-CL) copolymers were synthesized by ring-opening polymerization method at four different ε-CL ratios. Copolymers were characterized using Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance (1H-NMR), thermogravimetric analysis, and differential scanning calorimetry. To examine their possible applications in agriculture, germination test and growth analyses of corn plants were carried out. For this purpose, corn (Zea mays L. cv. “72 May 80”) was allowed to germinate under suitable conditions. Copolymers, 200 mM salt (NaCl) solution, and both copolymers and salt solution were applied to the plants and compared with the control groups. On the 21st day, all the plants were harvested and were stored at −80°C until analysis. Differences in growth parameters, lipid peroxidation degrees, pigment analysis, and total carbohydrate analysis were tested in order to put forward copolymer and NaCl sensitivity of the corn. Statistical analysis was carried out using the SPSS 17.0 software program and the results were compared with each other. These results showed that the copolymers both have a positive effect on the carbohydrate and malondialdehyde (MDA), a product of lipid peroxidation content as well as the chlorophyll content. Moreover, poly(EPP-co-ε-CL0.88) was more efficient than was the other copolymers in the improvement of the detrimental effects of salinity in increasing chlorophyll, carbohydrate, and MDA content, and growth of corn plants. As a result of the study, it was demonstrated that all of the investigated parameters were affected by the applications of salt and copolymers.
AtıfScopus2WoS2OpenAlex3İncele - MakaleAçık Erişim2017Assessment of Crystal Morphology on Uptake, Particle Dissolution, and Toxicity of Nanoscale Titanium Dioxide on Artemia salina
Johnson, M; Ates, M; Arslan, Z; Farah, I; Bogatu, C
AtıfOpenAlex38İncele - MakaleYalnız künye2017A stochastic location and allocation model for critical items to response large-scale emergencies: A case of Turkey
Celik, Erkan; Aydin, Nezir; Gumus, Alev Taskin
This paper aims to decide on the number of facilities and their locations, procurement for pre and post-disaster, and allocation to mitigate the effects of large-scale emergencies. A two-stage stochastic mixed integer programming model is proposed that combines facility location-prepositioning, decisions on pre-stocking levels for emergency supplies, and allocation of located distribution centers (DCs) to affected locations and distribution of those supplies to several demand locations after large-scale emergencies with uncertainty in demand. Also,theuseofthemodelisdemonstratedthroughacasestudyfor prepositioning of supplies in probable large-scale emergencies in the eastern and southeastern Anatolian sides of Turkey. The results provide a framework for relief organizations to determine the location and number of DCs in different settings, by using the proposed model considering the main parameters, as; capacity of facilities, probability of being affected for each demand points, severity of events, maximum distance between a demand point and distribution center.
- MakaleYalnız künye2017Women's Powerty in Turkey in terms of Gender Rolles
Tire, Olcay
Toplum, cinsiyetlerinden ötürü kadın ve erkeğe ayrı ayrı muamelelerde bulunur; onlara farklı özellikler, davranışlar, görevler, duygular yükler. Ataerkil toplumsal ilişkiler zemininden yükselen bu ayrım, her toplumda rol farklılaşmalarına ve cinsiyete dayalı eşitsizliklere yol açmıştır ve de açmaktadır. Bu rol farklılaşmaları, toplumda kadınların değersiz görülen ev ve bakım işlerinden (çocuk-yaşlı-hasta bakımı) sorumlu tutulmalarına, dolayısıyla kadınların toplumda pasif bir konumda olmalarına neden olmaktadır. Buna karşın erkeklerse çok daha etkin pozisyonları ellerinde tutmaktadırlar. Kadınlara biçilen bu geleneksel roller, bir yandan onların toplumsal hiyerarşideki derecesini alçaltırken diğer yandan erkelere göre daha kolay ve derinden yoksullaşmalarına neden olmaktadır. Bu çalışmanın amacı da kadın cinsi üzerinden toplumsal cinsiyet ve yoksulluğun neden sonuç ilişkilerini açıklayıp kadının ücretsiz olarak gerçekleştirdiği bakım emeğindeki sömürüyü ortaya koymaktır.
AtıfTR Dizin2
İncele - MakaleYalnız künye2017Milli Mücadele Yıllarında İmalat-ı Harbiye Fabrikaları
Zengin, Ersoy
İmalat-ı Harbiye Fabrikaları, Birinci Dünya Savaşı boyunca binlerce işçisiyle Osmanlı ordularının silah ve mühimmat ihtiyaçlarını karşılamıştır. Bu fabrikalar İstanbul'da; Zeytinburnu, Tophane, Kırkağaç ve Bakırköy'de faaliyet göstermekteydi. Ayrıca taşrada Hendek ve Bayramiç'te kereste, Konya ve Kayseri'de güherçile ihtiyacı için fabrikalar bulunmaktaydı. İmalat-ı Harbiye Fabrikaları, Mondros Mütarekesi'nin imzalanmasıyla silah üretim faaliyetlerini durdurdu. Fabrikaların bir kısmında sivil ihtiyaçlara yönelik üretim yapılmaya başlandı. İşgalci güçlere karşı Anadolu'da silahlı direniş başlayınca İstanbul'da bulunan İmalat-ı Harbiye mensuplarının birçoğu Anadolu'ya geçerek Kurtuluş Savaşı'na katıldılar. Bu işçiler küçük tamirhaneler kurarak orduya büyük fayda sağladılar. Bu makalede, silah üretim faaliyetlerine son verilerek ticari üretime başlayan İstanbul'daki İmalat-ı Harbiye Fabrikalarının faaliyetleriyle Anadolu'ya geçerek Milli Mücadele'ye katılmış olan İmalat-ı Harbiye işçilerinin silah ve mühimmat üretimi için yaptıkları çalışmalar incelenmiştir.
AtıfTR Dizin3İncele - MakaleYalnız künye2017Alabalık çiftliği sularında tetrasiklin ve parçalanma ürünlerinin araştırılması ve izlenmesi
Topal, Murat
In this study, tetracycline and degradation products were determined in the basins of a trout farm and in the stream carrying the waters of trout farm. 4-epianhydrotetracycline (EATC) and anhydrotetracycline (ATC) concentrations were determined under the detection limit in upstream of trout farm. The highest and lowest tetracycline concentrations detected in trout farm are 7.64±0.38 ppb and under detection limit, respectively. The highest and lowest 4-epitetracycline concentrations were 16.2±0.8 and 1.85±0.09 ppb, respectively while the highest and lowest 4-epianhydrotetracycline concentrations detected in trout farm were 25.8±1.3 and 6.12±0.30 ppb, respectively. The highest and lowest anhydrotetracycline concentrations detected in trout farm were 18.5±0.9 and 6.24±0.31 ppb, respectively. Mean tetracycline, 4-epitetracycline, 4-epianhydrotetracycline and anhydrotetracycline concentrations were 3.52±0.17; 5.30±0.26; 14.4±0.7 and 9.64±0.48 ppb in downstream of trout farm. When upstream and downstream were compared in terms of tetracycline and degradation products it could be said that Keban stream was affected as a result of activity of trout farm
AtıfTR Dizin1İncele - MakaleYalnız künye2017The bryophyte flora of Baskil district (Elazığ/Turkey)
Alataş, Mevlüt; Batan, Nevzat
In this study, the bryophyte flora of the Baskil District (Elazığ) was investigated between April and October 2015. In total 54 taxa (1 liverwort, 53 mosses), belonging to 13 families and 29 genera were determined by identifying bryophyte specimens collecting the study area. From these taxa, twenty four taxa are new records for Elazığ province, according to the grid-square system of Henderson (1961) fifteen taxa are new records for B9 grid square. Pellia epiphylla has been reported for the first time in Elazığ province with the present paper. While the largest families in terms of number of taxa are Pottiaceae (14), Brachytheciaceae (9), Bryaceae and Grimmiaceae (8), the largest genera are Syntrichia (6), Grimmia (6) and Ptychostomum (4). In addition, the life forms of the taxa which were examined in terms of ecological and floristic have been analyzed. From life forms; while Turf life form ranks the first, Cu life form ranks the second. Most of the taxa within the floristic list in terms of some ecological characteristics are xerophyt, photophyt and subneutrophyt
AtıfTR Dizin7İncele - MakaleYalnız künye2017Present Status of Viticulture in Mardin, Nusaybin Province, its Problems and Possible Solutions
Sanyürek, Nesrin Karaca; Çakır, Atilla; Ay, Şilan; Karakaya, Ersin
This study was conducted in 100 vineyard enterprises representing Mardin Nusaybin district. Data are obtained by questionnaire from 100 producers. In the light of the data gathered in the study it was aimed to determine of the educational status, age, bond business conditions and the size of the organization. According to the results of the questionnaire, it was determined that the level of education for producers dealing with vineculture in that district was low (69.0 % primary school). The average age of the surveyed manufacturers 54.2 and 37 % of the vineyard area 's are found to be under 20 da. Viticulture is done as a family business in the region. All of the surveyed manufacturers vineyards "other" (except for the cordon, guyot and pergola) training system that uses rate of 58.0 % and finishing system "is recommended because it stated that they preferred. Producers are determined who are not members of the cooperatives or the union. As a result; it is necessary to take a series of measures issues such as old ties, making viticulture in arid conditions and the growing viticulture techniques known enough in the province of Nusaybin in Mardin.
AtıfTR Dizin6İncele - MakaleYalnız künye2017İzole Bir AA Mikroşebekede Lig Şampiyonası Algoritması İle Optimum Otomatik Üretim Kontrolü
Cebeci, Mehmet; Gülan, Harun; Gençoğlu, Muhsin Tunay; Özdermir, Mahmut Temel; Yildirim, Burak
Modern güç sistemlerinde, ciddi bozulmaları takiben üretim-yük dengesinin koruma yeteneğini artırmak için optimum kazançlara sahip bir kontrolöre ihtiyaç vardır. Mikro şebeke sayısının artması nedeniyle bu sorun bugün daha belirgin bir hale gelmiştir. Mikro şebekeler çoğunlukla elektrik gücü üretiminde yenilenebilir enerji kaynaklarını kullandığı için üretim miktarları doğal olarak sürekli değişmektedir. Bu çalışmada AA mikro şebeke sistemlerinde frekans kontrolü için PID kontrolör kullanılmıştır. Kontrolörlerin kazançlarının optimal değerlerinin belirlenmesinde yeni bir sezgisel yöntem olan LŞA önerilmiştir. ITSE maliyet fonksiyonuna göre LŞA, PSO ve ABC ile kontrolör kazançları belirlenmiştir. Bu üç yönteme göre elde edilen kazanç değerleri kullanılarak sistemin zaman domainindeki simülasyonları yapılmış ve performansları karşılaştırılmıştır.
AtıfTR Dizin2İncele - MakaleYalnız künye2017Mekanik Alaşımlama Yöntemi İle Üretilen Co Alternatifi FeCuNiSnPMoMn Alaşımının Sıcak Presleme Karakteristiklerinin İncelenmesi
Celik, Ertugrul
Elmaslı kesici takımlar, günümüzde sıklıkla doğal taşların işlenmesinde kullanılan kesici takımlardır. Bu malzemeler toz metalurjisi teknikleri kullanılarak imal edilen, sentetik elmas ve metal bir matristen meydana gelen kompozit malzemelerdir. Co zararlı etkilerinden ve yüksek fiyatından dolayı imalatçılar tarafından tercih edilmemektedir. Bu nedenle Co alternatifi olan az yada kobalt içermeyen tozlar geliştirilmektedir. Yapılan bu çalışmada Fe esaslı mekanik alaşımlanmış toz sırası ile 700, 750, 800, 850 ve 900 oC'de 35 MPa basınç altında sıcak preslenmiştir. Üretilen numunelerin fiziksel özelliği olarak yoğunluk değerleri, metalurjik özelliklerini incelemek içim mikroyapı incelemeleri ve mekanik özelliklerini belirlemek için 3 nokta eğme dayanımları araştırılmıştır. Elde edilen deneysel veriler sonucunda, sıcak presleme sıcaklığı arttıkça numunelerdeki porozite oranının %10,69'dan %2,01'e kadar azaldığı ve 3 noktalı eğilme dayanımının 480 MPa'dan 1446 MPa değerine kadar arttığı görülmüştür. Elde edilen sonuçlar neticesinde Fe esaslı matrisin elmaslı kesici takım endüstrisinde Co alternatifi olarak kullanılabileceği sonucuna varılmıştır.
- MakaleYalnız künye2017Optimization of Operating Parameters on Color Removal by Fenton Oxidation Process of Wastewater Containing Malachite Green
Tanyol, Mehtap
In this study, a central composite design, which is a response surface methodology module was used to optimize the operating parameters of the Fenton oxidation process on the removal of color from synthetic wastewater containing malachite green. The experiments were carried out using the synthetic malachite green solution at 25 ºC and pH 3.4. Important parameters such as mixing time, Fe2+ concentration (0.01-0.15 mM), H2O2concentration (0,4-4 mM), and malachite green concentration (25-100 mg/L) were optimized via response surface methodology. Maximum color removal yield (99.33%) was obtained at an malachite green concentration of 50.97 mg/L, an Fe2+ concentration of 0.11 mM, an HO2 concentration of 2.14 mM and at 37.70 minute mixing time. Under optimal conditions, the COD removal efficiency was 95%. The results showed that the Fenton process may be used as an effective technology for the removal of color from wastewaters containing malachite green.
AtıfTR Dizin6İncele - MakaleYalnız künye2017Hamlet'te 'gotik': ürkütücülüğün katartik korkunun oluşmasındaki işlevi
Öğütcü, Murat
Built on Elizabethan dramatic conventions and religious debates about ghosts, Hamletemploys linguistic and dramatic means to chill its audience. Audio-visual means, alongwith the manner of entrances and exits, are used in order to horrify the audience. Thesecreate a fuctuation between belief and disbelief towards the macabre elements in theplay, which in turn heightens the fear in the audience. Thus, through these elements,gothic catharsis is achieved, which creates cathartic horror that generates fear in theaudience. The overall sensory experience in the Early Modern amphitheatre in which theplay was enacted had a great effect on the creation of this form of catharsis. Therefore, thisarticle aims to illustrate how the Elizabethan playhouse experience affected audiencereaction towards macabre elements and triggered gothic catharsis in Hamlet.
- MakaleYalnız künye2017Linyit Yakılan Bir Güç Üretim İstasyonunun Gaz Türbininin İkinci Kanun Analizi
Işık, Erdem; Gök, Mehmet; Berent, Hasan Kaan
Türkiye'nin linyit rezervlerin in büyük çoğunluğu, kalori değerinin düşük olması sebebiyle ancak termik santral yakıtı olarak kullanılmaya elverişlid ir. Bununla beraber, Türkiye'de ki en yaygın enerji kaynaklarından olan linyit reze rvle rin in uzun vadeli kullanımı; ucuz, te miz, verimli ve güvenilir yakma te knolojile rin in ku llan ımı ile mü mkündür. Mühendislik sistemlerinde ekserji analizinin uygulan ması; sistemlerin ilk tasarımı ve ekono mik analizlerinin yapılması açısından önemli veriler sunmaktadır. Analiz so nuçlarının değerlendirilmesi ile yapılan yorum ve enerji kayıpların ın yeri, büyüklüğü ve nedenleri saptanabilmekte, do layısıyla sistemlerin verimleri arttırılab ilmektedir. Çalışmamızda linyit yakıtını kullanan mevcut termik santraline, termod inamiğ in ikinci kanununa göre analiz yapılmıştır. Çalışmada sistemi o luşturan santral elemanlarından türbin için faydalı güç, tersinir güç ve tersinmezlik miktarları tespit edilmiş ve sistemin genel verimi hesaplanmıştır. Elde edilen sonuçlar ve değerlendirmelerde, termik santrallerin kuru lmasında ve işletilmesinde, tasarım ve ekonomi açısından önemli veriler bulundurmaktadır. Böylece günümüzde büyük önem taşıyan, enerji tasarrufu ve enerjinin en verimli şekilde kullanılması sağlanabilecektir
AtıfTR Dizin1İncele - MakaleYalnız künye2017Öğretmen Adayları İçin Kişisel-Mesleki Yetkinlikler Algı Ölçeği: Geçerlik ve Güvenirlik Çalışması
Kazu, Hilal; Şenol, Demet Demiralp
Bu araştırmada, öğretmen adaylarının kişisel-mesleki yetkinliklere ilişkin algılarını geçerli ve güvenilir olarak ölçmeye olanak tanıyacak bir ölçme aracının geliştirilmesi amaçlanmıştır. Araştırma, toplam 720 öğretmen adayından oluşan dört ayrı çalışma grubu üzerinde yürütülmüştür. Araştırmada ölçme aracının yapı geçerliği için açımlayıcı faktör analizi (AFA) ve doğrulayıcı faktör analizi (DFA) hesaplanmıştır. AFA sonucunda, ölçekte 18 madde ve dört faktörden oluşan bir yapı elde edilmiştir. DFA'dan elde edilen bulgular da, bu yapının yeterli uyum indekslerine sahip olduğunu göstermiştir. Yapı geçerliği verilerinin zenginleştirilmesi amacıyla yapılan yakınsak ve ayırt edici geçerliği hesaplamaları da, literatürde kabul gören değerler içinde sonuçlar sağlandığını göstermiştir. Ölçekten elde edilen ölçümlerin güvenirliği; cronbach alfa, bileşik güvenirlik ve test tekrar test yöntemleri ile incelenmiş ve hesaplanan güvenirlik katsayılarının kabul edilebilir sınırlar içerisinde yer aldığı saptanmıştır.
AtıfTR Dizin5İncele