Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Dertli, Enes(117)
- Kaya, Yunus(51)
- Şahin, Engin(48)
- İspirli, Hümeyra(47)
- Özen, Soner(46)
- Şenay, Volkan(45)
- Pat, Suat(44)
- Can, Zehra(39)
- Bayraktar, Bülent(37)
- Bayram, Sinan(37)
- Korkmaz, Şadan(36)
- Cuce, Erdem(35)
- Ecem Bayram, Nesrin(33)
- Kutlu, Naciye(33)
- Yilmaz, Mustafa Tahsin(32)
- Artar, Musa(31)
- Ertugrul, Mehmet(30)
- Öner, Erdal(30)
- Ayata, Ümit(29)
- Hasar, Ugur Cem(29)
- Esmer, Yusuf(28)
- Mercan, Emin(27)
- Cuce, Pinar Mert(26)
- Özdemir, Akın(25)
- Çolak, Murat(24)
- Bayram, Ozkan(23)
- Kamiloğlu, Aybike(23)
- Sert, Durmuş(22)
- Ayazoglu, Rabil(21)
- Abdioglu, Murat(20)
- Bayram, Nesrin Ecem(20)
- Kadakal, Mahir(20)
- Kara, Yakup(20)
- Kizil, Hamit Emre(20)
- Tozlu, Alperen(20)
- Birinci, Ahmet(19)
- Gerçek, Yusuf Can(19)
- Battal, Fetullah(18)
- Dirican, Ebubekir(18)
- Ergün, Mustafa(18)
Yayınlar
- MakaleYalnız künye2019Scopus SJRQ1A study on 3D graphene synthesized directly on Glass/FTO substrates: Its Raman mapping and optical properties
Bayram, Ozkan
In this study, vertically oriented (3D) graphene nanostructures (VGN) were obtained on Glass and Fluorine doped tin oxide (FTO) substrates at relatively low temperatures (approaximatelly at 400 °C) by using plasma enhanced chemical vapor deposition (PECVD) technique. VGNs were characterized using Raman, Uv–Vis and SEM spectroscopies, respectively. Raman spectroscopy showed that growth temperature significantly affected VGN formation and film quality. The layer structures of these VGNs were also confirmed by Raman mapping. The most important data obtained from this study is that although the applied radio frequency (RF) power is the same, the growth temperature significantly affects the graphene formation and morphologies. This was attributed to the fact that CH4 decomposition was very difficult at low temperatures. The optical transmittance of VGNs ranged from 50% to 95% (at 550 nm wavelength) and their electrical conductivity was also determined to be between 5.94 kohm/sqr and 11.2 kohm/sqr. The electrical and optical properties of VGNs, which have a large surface area, indicated that they may be an alternative material for sensor, solar cell and supercapacitor applications.
AtıfScopus19WoS18OpenAlex20
İncele - MakaleAçık Erişim2019Scopus SJRQ1Inhibition of growth of U87MG human glioblastoma cells by Usnea longissima Ach.
Emsen, Bugrahan; Ozdemir, Ozlem; Engin, Tubanur; Togar, Basak; Cavusoglu, Seyda; Turkez, Hasan
Herbal medicines are efficient to reduce side effects in the fight against glioblastoma, which plays a critical role within brain cancer species. The recent studies designated for testing the effects of lichens that have shown numerous anticancer activities on glioblastoma so far. In the present study, different concentrations of water extract obtained from Usnea longissima Ach. were used in order to determine cytotoxic (via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide and lactate dehydrogenase tests), antioxidant (via total antioxidant capacity test), pro-oxidant (via total oxidant status test) and genotoxic (via 8-hydroxy-2'-deoxyguanosine test) effects of them on human U87MG-glioblastoma cancer cell lines. Primary mixed glial-neuronal non-cancerous cells from Sprague-Dawley rats were also utilized to measure the effects of treatments on non-cancerous cells. Based on median inhibitory concentration values, the data belonged to non-cancerous cells (2486.71 mg/L) showed distinct towering compared to U87MG (80.93 mg/L) cells. The viability of non-cancerous and U87MG cells exposed to extract is decreased in a dose dependent manner. It was also showed that low concentrations of extract notably increased total antioxidant capacity on non-cancerous cells. In addition, various phenolic compounds in extract were detected through high-perfonnance liquid chromatography. The recent results encourage that extract will be able to have therapeutic potential against glioblastoma.
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İncele - MakaleYayıncıda açık erişim2018Acute Effect of Extreme Sports on Serum Lipids
Agirbas, O; Aggon, E; Hackney, AC
- MakaleAçık Erişim2018Yağlık Ayçiçeği Çeşitlerinde Oluşan Kuş Zararı Miktarları ve Verime Etkileri
Gül, Volkan; Polat, Taşkın; Öztürk, Erdoğan
Dünya genelinde kuşların tarımsal alanlara vermiş olduğu zarar, çiftçiler açısından önemli ekonomik kayıplara neden olmaktadır. Tarımsal amaçlı kullanılan arazilerde şehirleşme veya çevre düzenlemesi amacıyla yapılan ağaçlandırma, kuşlara ait doğal yaşam alanlarını arttırdığı için, bu arazilerde yetiştirilen ürünlerin kuş zararından etkilenme oranını da artırmaktadır. Özellikle kuşlar, ayçiçeği yetiştiriciliği yapılan arazilerde ayçiçeği tohumuna önemli derecede zarar veren canlılardır. Bu çalışmada, kontrollü ve kontrolsüz şartlarda yetiştirilen 10 farklı yağlık ayçiçeği çeşidinde (Pioneer63F73, Pioneerp64LL05, Pioneer64LC108, PioneerPR64G46, Coral, Golsun, Şems, Aga1301, Duna ve Bosfora) kuş zararının tespiti ve bu zararın tane verimine olan etkisi belirlenmeye çalışılmıştır. Çalışma sonunda; kuş zararı en fazla %51.19’luk oranla Pioneer64LC108 çeşidinde belirlenmiş, en düşük kuş zararı ise Bosfora ve Şems çeşitlerinde sırasıyla %9.94 ve % 11.7 olmuştur. Tüm çeşitlerin ortalaması olarak kuş zararı tane veriminde yaklaşık olarak %35.1 oranında bir azalmaya neden olmuştur. Mevcut içerisinde, erkenci, tabla yapısı eğik ve iç bükey olan Bosfora ve Şems çeşitlerinin kuş zararından daha ez etkilendikleri ve verim kayıplarının daha düşük olduğu tespit edilmiştir.
AtıfOpenAlex1TR Dizin1
İncele - MakaleAçık Erişim2018Monofloral ve Multifloral Bal Numunelerinin Bazı Kalite Kriterlerinin Belirlenmesi
Bayram, Nesrin Ecem; Demirkol, Esra
Bu çalışmada özellikle balın saflığını ve orijinlerini ayırt etme noktasında kullanılan iki önemli yöntem ile farklı orijinlerden bal örneklerinin incelenmesi amaçlanmıştır. Bu amaçla Türkiye’nin dört farklı bölgesinden (Erzurum, Giresun, Hakkari, Rize) elde edilen bal örneklerinin prolin analizi ve melissopalinolojik analizleri gerçekleştirilmiştir. Örneklerin melissopalinolojik analizleri ışık mikroskobu aracılığıyla yapılmıştır. Prolin analizleri ise, spektrofometrik yöntem kullanılarak yürütülmüştür. Melissopalinolojik analizler sonucunda monofloral ve multifloral çiçek balı örneklerine rastlanılmıştır. Bal örneklerinin prolin oranları 503.46 mg/kg-696.09 mg/ kg arasında değişkenlik göstermiştir. Sonuç olarak, melissopalinolojik analizler neticesinde kestane balı olduğu tespit edilen bal örneklerinin prolin içeriğinin genellikle daha düşük olduğu tespit edilmiştir.
AtıfOpenAlex12TR Dizin6İncele - MakaleYalnız künye2018Mutual Interaction Between Corporate Governance And Enterprise Risk Management: A Case Study In Borsa Istanbul Stock Exchange
Şenol, Zekai; Karaca, Süleyman Serdar; Korkmaz, Özge
Corporate governance and enterprise risk management (ERM) issues have become important issues such as the big corporate scandals following the Enron, the 2008 global economic crisis, the deepening of financial markets, the increase of shareholder numbers in firms and the importance of investor expectations. Some issues such as financial stability, sustainable growth and stakeholder responsibilities related to corporate governance increase the effectiveness of the ERM, taking by management of the risk response related to ERM, ensuring reasonable assurance of reaching objectives, managing risk reporting, etc. In this study, the interrelationships between ERM and corporate governance, which are two mutually influential subjects, were researched. In the logistic regression analysis of 231 companies and time samples for 2009-2015 period, it was seen that corporate governance and ERM positively influenced each other.
AtıfTR Dizin1İncele - MakaleYalnız künye2018Evaluation of Inhibition Effects of Some Cardiovascular Therapeutics on Human Erythrocyte Carbonic Anhydrase Isoenzymes
Isgor, Mehmet Mustafa; Kılınç, Namık; Alim, Zuhal; Beydemir, Şükrü; Sengül, Bülent
Carbonic anhydrase enzyme plays a vital role in metabolic events such as acid-base regulation and respiration. Inour research, it is tried to determine the inhibitory influences of the cardiovascular therapeutics esmololhydrochloride, amiodarone hydrochloride and lidocaine hydrochloride on human erythrocytes carbonic anhydrases(hCA I and II). In accordance with this purpose, carbonic anhydrase isoenzymes were purified from humanerythrocytes by using affinity chromatography method. Enzyme purity was checked by SDS-PAGEelectrophoresis method. After the carbonic anhydrase enzymes were purified, the inhibitory affects ofcardiovascular therapeutics on these enzymes, using esterase activity, which is the method of measuring in vitroactivity, were examined. The three cardiovascular therapeutics dose-dependently decreased activity of hCAs. IC50values of amiodarone hydrochloride, esmolol hydrochloride and lidocaine hydrochloride were found to be,respectively, 0.91 mM, 5 mM, 5.8 mM for hCA-I and 0.41 mM, 3.5 mM, and 6.36 mM for hCA-II. Our resultsproved that, under in vitro conditions, cardiovascular therapeutics significantly inhibit human CA-I and IIactivities. So, irregular use of these medicines may cause serious adverse effects in terms of human health.
AtıfTR Dizin2İncele - MakaleAçık Erişim2018Yumurta Tavuğu Yemlerinde Sepiyolit Kullanımının Pelet Kalitesi ve Pelet Üretim Parametrelerine Etkisi
Çıvracı, Sadık; Onbaşılar, İlyas; Yalçın, Sakine; Burcak, Ender
Bu araştırmanın amacı, endüstri koşulları altında yumurta tavuğu yemlerinde sepiyolit kullanımının pelet kalitesine ve pelet üretim parametrelerine olan etkisini belirlemektir. Araştırmada, kontrol ve deneme grubu için yedişer parti olmak üzere her grup için toplam 14 tonluk pelet yem ticari bir yem fabrikasında üretilmiştir. Her parti 2 tondur. Üretilen kontrol grubu yemi %14,12 ham protein, %4,47 ham selüloz ve %3,20 ham yağ içermektedir. Deneme grubu yemine karıştırıcıda %1 sepiyolit ilave edilmiştir (top-dressed). Fabrikada 6 mm delik çaplı peletleme diski kullanılmıştır. Sepiyolit kullanımı enerji tüketimini %16,14 düzeyinde azaltmış, pelet dayanıklılık indeksini önemli ölçüde artırmıştır (p<0,001). Pelet dayanıklılık indeksi, kontrol grubu yeminde %49,08 ve deneme grubu yeminde %87,39 bulunmuştur. Bu nedenle, yumurta tavuğu yemlerinde sepiyolit kullanımının pelet kalitesi üzerine faydalı etkileri olabileceği sonucuna varılmıştır.
AtıfTR Dizin3İncele - MakaleAçık Erişim2018GG25 gri dökme demir malzemesinin üretiminde bulanık istatistiksel proses kontrolünün uygulanması
Uçurum, Metin; Atıcı, Ümit; Çınar, Mehmet; Çolak, Murat
Kimyasal bileşimlerinde %2'den fazla karbon içeren demirli malzemeler grubuna yaygın olarak dökme demir malzemeleri denir. Karbon Eşdeğeri (CE), dökme demir üretiminde kullanılan farklı alaşım elementlerinin kombine etkilerini eşdeğer miktarda karbon ile ilişkilendiren, ağırlık yüzdesi olarak ampirik bir değerdir. İstatistiksel proses kontrol (SPC), çok popüler hale gelen kaliteli ve yüksek standartlı ürünler elde etmek için fabrikalarda yaygın olarak uygulanmaktadır. Bulanık proses kontrol analizi, X-R kontrol çizelgelerini kullanarak, bulanık teori ile geliştirilmiş daha gerçekçi sonuçlar veren bir tekniktir. Bu çalışma, bir gri dökme demir üretim hattı koşullarının, şartname ve kontrol sınırları dâhilinde olup olmadığını bulanık istatistiksel proses kontrol tekniği ile gözlemlemek için gerçekleştirilmiştir. Bulanık X-R grafikleri, 20 günlük üretim için GG25 gri dökme demir numunelerine uygulanmıştır. Sonuçlar, bulanık istatistiksel proses kontrol (SPC) yöntemlerinin bir dökümhaneye basitçe uygulanabileceğini göstermektedir
AtıfOpenAlex2TR Dizin1İncele - MakaleYalnız künye2018Sanal gerçeklik teknolojisinin yabancı dil olarak İngilizce öğretiminde yazma becerisine etkisi
Dolgunsöz, Emrah; Yıldırım, Gürkan; Yildirim, Serkan
Günümüzde teknoloji alanında yaşanan gelişmeler göz önüne alındığında eğitim ortamlarında çok sık olarak farklı teknolojiler kullanılmakta ve öğretimsel etkileri incelenmektedir. Sanal gerçeklik uygulamaları da bu teknolojilerin en son örneklerinden biri olarak karşımıza çıkmaktadır. Sanal Gerçeklik kişinin sanal ortamla birebir ilişki içinde bulunduğu ve etkileşime geçebildiği modern bir teknolojidir. Çok aşamalı açımlayıcı karma desene sahip bu çalışmada İngilizceyi yabancı dil olarak öğrenen 24 öğrenci hem sanal gerçeklik hem geleneksel 2 boyutlu video izlemiş ve yazma performanslarına bakılmıştır. Ayrıca tüm öğrencilerle yarı yapılandırılmış röportaj yapılmıştır. Çalışma sonucunda; VR teknolojisinin kullanıcılar tarafından kullanılmasa bile medya, arkadaş ve sosyal ağlar gibi ortamlarla bu teknolojiden haberdar oldukları görülmüştür. Nicel sonuçlar öğrencilerin geleneksel video da daha başarılı olduğunu göstermiş olsa da, sanal gerçeklik tecrübesi uzun süreli hafızaya daha olumlu etki etmiştir. Sanal gerçeklik uygulamalarının sunmuş oldukları gerçeklik ve ortamda bulunma hislerinden dolayı kullanıcıları tarafından çok fazla beğendikleri görülmüştür. Ancak sunulan içeriğin görüntü kalitesi gibi teknik özellikleri beğeni durumunu olumsuz yönde etkileyebilmektedir.
AtıfTR Dizin3İncele - MakaleYalnız künye2018A research on labor force requirement ın turkish ready-wear ındustry
Özbek, Ahmet; Esmer, Yusuf
Today, the Turkish ready-wear industry is undergoing a transformation process from acontract manufacturing to full package manufacturing. The most important input in theproduction of ready-wear is undoubtedly the labor force. For this reason, the success of thetransformation process is possible by meeting the qualified personnel needs of the industry. Inthis study, labor force requirement of the Turkish ready-wear industry is examined. Qualitativeresearch method is used in this study. Job adverts on ready-wear industry are investigated onwww.kariyer.net which is Turkey’s largest human resources website. Firstly the job positionswhich are most needed by the ready-wear industry and then the characteristics required forcandidates for these positions are determined. The obtained data are subjected to frequencyand percentage analyzes in the SPSS 21.0 program. According to the result of the research; themost needed personnel positions of Turkish ready-wear enterprises are "stylist", "merchandiser"and "sales consultancy" respectively. It has also been found that ready-wear enterprises areprimarily seeking communication skills and suitability for teamwork from the personnel who willwork in these positions. The main problem for ready-wear enterprises is to meet the need forpersonnel from outside the production area such as merchandiser, sales consultant, becauseenterprises request professional knowledge as well as marketing knowledge frommerchandisers and sales consultants. However, the marketing knowledge is given in themarketing programs and the professional knowledge is given in the professional departments inTurkey. This situation leads to the loss of time and money since firms have to give profesionaltranings to the marketing graduates for merchandiser position. The opposite of this case is alsotrue; the staff with professional knowledge also needs marketing knowledge. Therefore, theready-wear enterprises need vocational training education institutions which give bothmarketing and profession training to meet the labor force requirements of sales representativesand sales consultants. Because, in all the researches and studies carried out, it is emphasizedthat the contribution of education is important and the quality of labor force should be improvedthrough education.
- MakaleYalnız künye2018Tüketicilerin UHT Süt Tüketimini Etkileyen Faktörlerin Analizi: Erzurum İli Örneği
Uzundumlu, Ahmet Semih; Kurtoğlu, Seval; Birinci, Avni
Çalışmanın amacı Erzurum ilindeki hanelerin UHT sütü tercih etmesinde onları etkileyen faktörleri belirlemektir. Araştırmada kullanılan birincil veriler 2010 yılında Palandöken, Yakutiye ve Aziziye ilçelerinden sağlanmıştır. Tüketicilerin UHT süt tercih etmesinde etkili olan faktörlerin belirlenmesinde ve bu faktörlerin indirgenmesinde faktör analizi kullanılmıştır. Tüketicilerin segmentlere ayrılması ve her bir segment profilinin ortaya çıkarılmasında, kümeleme analizi kullanılmıştır. Araştırma sonuçlarına göre; hane halkının%95,00’ı UHT süt tüketimi yapmaktadır. UHT süt tüketimi üzerine etkili olan 18 faktör, faktör analizi ile 5 ana faktöre indirgenmiştir. Faktör analizi ile elde edilen faktör skorları kümeleme analizinde 3 kümeye ayrılmıştır. Birinci kümeye giren tüketiciler için UHT süt, homojen olması ve ambalajı gibi içsel ve dışsal özelliklerinin yanısıra reklam ve fiyat cazibesi nedeniyle tercih edilmektedir. İkinci kümeye giren tüketiciler için hazırlanma ve ulaşım kolaylığı ve UHT süte olan güven nedeniyle UHT süt tüketilirken, aksine üçüncü kümeye giren tüketiciler için iyi bir diyet ürünü olması nedeniyle tercih edilmektedir.
AtıfTR Dizin2İncele - MakaleYalnız künye2018On Domination Polynomials of Caterpillar Graphs
Şahin, Abdulgani; Şahin, Bünyamin
The domination polynomial of a simple graph G is calculated with D(G, x) =Pn i=1 d(G, i)x i such thatd(G, i) is the number of the dominating sets of G of size i. In this paper we study the domination polynomials ofcaterpillar graphs.
- MakaleYalnız künye2018Hosoya Polynomial of Graphs Belonging to Twist Knots
Şahin, Abdulgani; Şahin, Bünyamin
There is a deep relationship between knot theory and graph theory. Graphs are effective tools forstudies into knot theory. It is possible to switch between the two theories by forming the graphs of knots. Thus, thestudy areas of the two theories meet on a common ground. In this study, we firstly introduce Hosoya polynomialand we work out the Hosoya polynomials for graphs of twist knots which are one of interesting families of knotsand try to get a generalization for them.
- MakaleYalnız künye2018Tutte Polynomial for Graphs of Twist Knots
Şahin, Abdulgani; Şahin, Bünyamin
The Tutte polynomial is a two-variable polynomial that is connected by a graph, a matroid or a matrix.The Tutte polynomial has a lot of exciting applications in different areas for example combinatorics, probability,knot theory, algebra, statistical mechanics, computer sciences, chemistry and biology. It was indicated by W. T.Tutte. We transport the Tutte polynomial to knot theory. Because each knot have a corresponding graph. Westudy the Tutte polynomial for graphs of twist knots. We find some general forms for the Tutte polynomial ofgraphs belonging to twist knots and the Tutte polynomial of signed graphs belonging to twist knots. Twist knotsare significant class of knots to take into account especially in contact geometry.
- MakaleYalnız künye2018Word familiarity effects in efl reading: an eye tracking study
Dolgunsöz, Emrah
Do you know what happens in mind when we encounter a novel word while reading anewspaper, a paragraph or a short story? Via eye tracking technique, this study aimed togather clues about how our mind reacts to an unknown word while we read in anotherlanguage by examining word familiarity effects on eye movements during EFL reading. Aftera vocabulary test, eye movements of 60 EFL learners at intermediate level were recordedwhile they read identical sentence pairs including words with different length and frequency.The results showed that (1) total time spent on words and reanalysis times were predicted byvocabulary knowledge, (2) initial word processing was not predicted by vocabulary size (3)unfamiliar words attended more attention and required more cognitive effort than familiarwords, (4) familiar words are processed in similar time spans for English as L1 and L2 butunfamiliar words cause more cognitive load in EFL. The results were discussed incomparison to L1 eye movement research in reading and were evaluated regarding EFLreading in terms of noticing hypothesis, incidental vocabulary acquisition and EFL readinginstruction.
- MakaleYalnız künye2018Teaching efl vocabulary to young digital nativesthrough online games: a study with turkish 5TH grade efl learners
Dolgunsöz, Emrah; Bilici, Özlem Utku
The current study aimed to examine the effect of online vocabulary gameson teaching new words to young learners ofEFL. For this aim, 46 Turkish 5thgrade EFL students in a state school were assigned into control and experimental groups. Both groups studied 22 words in 6 instructional sessions conducted in 6 subsequent weeks in the second semester of 2016-2017academicyear. Throughout this period, the data were collected via recognition-production tests and semi-structured interviews. The results of the recognition and production tests showed that experimental group outperformed the control group in terms of vocabulary gains. The results of the semi-structured interviews also supported the quantitativeresultsindicatingthatonlinevocabularygamesincreased students’ motivation. Additionally, it was observedthat young learners were amused by digital games and were willing to learn more via them.
- MakaleAçık Erişim2018The relationship between corporate social responsibility and corporate reputation
Battal, Fetullah; Çınar, Ertuğrul; Kılıçaslan, Şenol; Yazici, Sinan
Corporate social responsibility has become a concept that hasbeen taken into consideration in our country towards the end of1980s.While the studies on the subject were first in the field of privatesector, the mission and vision determination task of the institutions inthe public sector has become mandatory since the beginning of the2000s.The purpose of these practices is that the private sector and thepublic sector are aware of the responsibility of the stakeholders. Thus,these organizations will ensure their sustainability by takingresponsibility for both employees and their environment. Therefore,companies will have the opportunity to create a strategic competitiveadvantage in the medium and long term in the global competitionenvironment. Today, various practices related to corporate socialresponsibility are also common.This research was carried out on the students and employeesattending a university in the Eastern Black Sea Region. The aim of thisstudy is to examine the effects of corporate social responsibilityperceptions on corporate perception and dimensions (Emotional Attractiveness, products and services, Vision and Leadership,Workplace environment, social and environmental responsibility,financial performance).As a result of the survey conducted on a total of 328 participants,it was observed that the perceptions of the students and theiremployees regarding the increase of corporate social responsibilityincreased significantly and in the same direction and this relationshipwas very strong. On the other hand, participants perceived social andenvironmental responsibility as more meaningful than other corporatereputation dimensions. Vision and leadership are perceived as leastsignificant in terms of corporate reputation. There were also significantdifferences between age, gender, seniority, education level anddepartmental perceptions.
- MakaleYalnız künye2018Scopus SJRQ1Accurate and reliable U-value assessment of argon-filled double glazed windows: A numerical and experimental investigation
Cuce, Erdem
U-value assessment is a significant process to be able to evaluate the thermal insulation performance of building materials notably windows. About 60% of energy losses from building envelope is attributed to windows, hence accurate and reliable thermal resistance evaluation of glazed areas is of vital importance for a sensitive energy demand analysis of buildings. U-value assessment of windows is usually conducted through theoretical and numerical methods in literature. However, dwellers frequently complain about the insufficient thermal insulation performance of commercial glazing products when compared to the reported U-values in datasheets. This inconvenience arises from the lack of comprehensive experimental tests which simulate the actual operating conditions. Therefore, in this research, argon filled double glazed windows, which is one the most common fenestration products in market, is numerically and experimentally analysed in terms of U-value performance. Although computational fluid dynamics (CFD) analyses reveal that the U-value of the reference sample (4 mm pane + 20 mm argon + 4 mm pane) is 0.89 W/m(2)K, which is in good accordance with the theoretical data (0.80 W/m(2)K), it is observed from the environmental chamber tests that the U-value in simulated operating conditions is 1.25, 1.18 and 1.32 W/m(2)K for top, centre and lower positions of the window sample. The tests are repeated for accuracy verification, and the U-value is found to be 1.23, 1.18 and 1.31 W/m(2)K for the said points. In this respect, it is concluded that thermal bridges and edge effects play a key role in actual U-value performance of glazing products. Therefore, experimental performance figures are recommended to be utilised in energy demand analyses of buildings. (C) 2018 Elsevier B.V. All rights reserved.
AtıfWoS72OpenAlex90İncele - MakaleYalnız künye2018Scopus SJRQ3THE COOPERATION BETWEEN METHYL JASMONATE AND SALICYLIC ACID TO PROTECT SOYBEAN (GLYCINE MAX L.) FROM SALINITY
Seckin-Dinler, Burcu; Tasci, Eda; Sarisoy, Ufkun; Gul, Volkan
Methyl jasmonate (MeJA), a methyl ester of jasmonic acid, is a naturally produced phytohormone that regulates plant growth and development by maintaining the morphologic, physiological, and biochemical development of plants. The purpose of this study was to determine the effect of methyl jasmonate and endogenous salicylic acid on the stimulation and scavenging of reactive oxygen species (ROS) under salt stress in soybean roots and leaves. Soybean leaves were sprayed with 0.5 mu M methyl jasmonate for 4 days, followed by exposure to 200 mM NaCl. Foliar application of MeJA did not change the leaf area; however, it increased the relative water content (RWC), chlorophyll content, relative electrolyte leakage (REL), and root and shoot fresh weight, and it lessened the stress-induced oxidative damage by decreasing the levels of hydrogen peroxide (H2O2), malondialdehyde (MDA). Curiously, catalase (CAT) enzyme and isoenzyme activity, and also endogenous salicylic acid (SA) were decreased by MeJA treatment. As a result, this study firstly determined that MeJA treatment improved the soybean performance under salinity by acting role as an antioxidant and cooperating with SA.
AtıfWoS4İncele