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 künye2017Ohal Uygulamaları ve Alternatif Akademi Deneyimleri: “Dersim Dayanışma Akademisi” Üzerine Düşünceler
Gültekin, Ahmet Kerim
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- MakaleAçık Erişim20172D-DOST Özellik Çıkarımı Yöntemi ve LS-SVM Sınıflandırıcı Tabanlı Doku Sınıflandırma Sistemi
Baloglu, Ulas Baran; Yıldırım, Özal
Bu çalışmada, doku görüntülerinin sınıflandırılması için 2D-DOST (İki Boyutlu Ayrık Orthonormal Stockwell Dönüşümü) ve LS-SVM (En Küçük Kareler Destek Vektör Makineleri) tabanlı yeni bir sınıflandırıcı sistemi önerilmiştir. Önerilen sistem, özellik çıkarımı ve sınıflandırma olmak üzere iki ana bölümden oluşmaktadır. Özellik çıkarımı aşamasında, görüntüleri temsil eden ait ayırt edici özellik vektörleri 2D-DOST tabanlı özellik çıkarım yöntemi ile elde edilmektedir. Sınıflandırma aşamasında ise yüksek başarım oranı ve doğruluğa sahip olan LS-SVM sınıflandırıcısı ile doku görüntüleri sınıflandırılmaktadır. LS-SVM’nin eğitimi her bir doku görüntüsüne ait ayırt edici özellik vektörleri üzerinde gerçekleştirilmiştir. Test verisi olarak hazırlanan doku görüntüleri eğitilmiş LS-SVM sınıflandırıcının girişine uygulanmıştır. Önerilen yöntemin performans testleri için alt-görüntüler ile elde edilen farklı veri setleri üzerinde gerçekleştirilmiştir. Bu veri setleri hem normal doku görüntülerini hem de gürültülü doku görüntülerini içermektedir. Veri setleri içerisindeki alt görüntüler Brodatz ve Kylberg doku veri tabanlarından türetilmiştir. Gürültülü verilerin oluşturulmasında, farklı seviyelerde Gaussian ve Tuz&Biber gürültüsü kullanılmıştır. Çalışma sonuçları, önerilen 2D-DOST ve LS-SVM tabanlı sınıflandırıcının doku görüntülerini yüksek başarım oranı ile sınıflandırabildiğini ve gürültüye karşı gürbüz olduğunu göstermektedir.
AtıfOpenAlex4
İncele - MakaleAçık Erişim2017Investigation of Low-Temperature Behavior of Stone Mastic Asphalt Mixtures Modified with Paraffin and Crumb Rubber
Akpolat, Mustafa; Kök, Baha Vural; Yilmaz, Mehmet
In hot mix asphalts at low temperatures, cracks occur due to thermal tension and these cracks cause water to leak inside the pavement and the pavement gets deformed sooner than expected. In order to improve the properties of bituminous mixtures, mostly polymer type additives are used in the modification of the bitumen. These types of improvements usually have positive effects on the high-temperature behavior of the mixture. In this study, semi-circular bending test, which is the most commonly used method in the literature to investigate the low-temperature behavior of bituminous mixtures, was performed. In the study, the resistance of stone mastic asphalt mixtures, which were prepared with modified bitumen with a constant 3% of paraffin and various amounts of crumb rubber, to crack formation and its movement was identified. As a result, it was concluded that the effects of additives on crack formation and its movement is varied and the relation between the fractured aggregate surface areas and the fracture toughness of the mixture can be determined by the image processing method.
AtıfTR Dizin1İncele - MakaleYalnız künye2017Aydın/Türkiye’de Yayılış Gösteren Dittrichia L. (Asteraceae) Cinsinin Kimyasal Kompozisyonunun Değerlendirilmesi
Paksoy, Mehmet Yavuz; Sevindik, Emre
Küçük bir cins olarak Greuter tarafından tanımlanan Dittrichia (Asteraceae) cinsi, önceden Inula’nın bir bölümü olarak biliniyordu ve Atlantik Avrupa ülkelerinde, Ortadoğu ve Akdeniz bölgesinde yayılış göstermektedir. Bu çalışma da Dittrichia cinsine ait bitkilerden elde edilen uçucu yağların kimyasal bileşimi incelenmiştir. Çalışma materyali Dittrichia viscosa (L). Greuter ve Dittrichia graveolens (L.) Greuter Eylül-Ekim 2015 tarihinde Batı Anadolu (Aydın/Türkiye) ekolojik koşullarında toplanmıştır. Yaprakların uçucu yağları Clevenger cihazıyla ekstrakte edildi. Esansiyel yağ bileşimleri Gaz Kromatografisi-Kütle Spektrometresi (GC-MS) cihazı ile belirlendi. Gaz kromatografisi-kütle spektrometresi analizinin sonuçları, D. graveolens bitkisinden elde edilen uçucu yağda levo-bornyl acetate en yüksek düzeyde (% 25.23) olduğunu gösterdi. D. viscosa bitkisinde ise 2,4-diokso-3-metil6-izopropil pirido [2,3-b]- [1,4] pirazin en yüksek düzeyde (% 29.02) olduğu belirlendi.
AtıfTR Dizin1İncele - MakaleYalnız künye2017Forensıc accountıng awareness of accountıng professıonals: a research ın mersin
Çeviren, Seher Meral; Killi, Mustafa
Forensic accounting as a branch of the accounting profession has an older past in developed countries in comparison with our country. The accounting and auditing scandals experienced in recent years, the increase of illegal money traffic, terrorism financing and increase in white collar crime is gradually increasing need for forensic accounting. Forensic accounting considered as a separate professional expertise and rapidly spreading in the world is under development as a new concept in our country. In this study, aimed to investigate the level of awareness about the forensic accounting profession of accounting professionals operating in Mersin province. For this purpose a questionnaire applied to 304 public accountants and the data were analyzed using SPSS statistical software. Result of research show that public accountants have heard of the forensic accounting and forensic accountancy profession but they don't have enough information.
AtıfTR Dizin10İncele - MakaleYalnız künye2017Comparing of Glutathione Ingredients of Syntrichia ruralis and Syntrichia montana (Pottiaceae) Taxa
Alataş, Mevlüt; Çöteli, Ebru; Batan, Nevzat
In this study, Reduced Glutathione (GSH) and Oxidized Glutathione (GSSG) levels of Syntrichia ruralis (Hedw.) F. Weber & D. Mohr. and Syntrichia montana Nees. taxa belongs to Syntrichia type of Pottiaceae family have determined with High-performance Liquid Chromatography (HPLC). It has determined that GSH level is 81.90 ± 5.68 g/g, 25.28 ± 2.28 g/g and GSSG level is 13.04 ± 1.74 g/g, 5.68 ± 1.02 g/g of Syntrichia ruralis and Syntrichia montana taxa. These amounts have shown that Glutathione (GSH, GSSG) level included in Syntrichia ruralis taxon is more than Syntrichia montana taxon and both of bryophytes-leaved taxa are a good source with regard to Glutathione. It has seen that these bryophytes -leaved are antioxidant featured plants.
AtıfTR Dizin3İncele - MakaleYalnız künye2017Sihirli Bir Araç Olarak Endüstriyel Kümelenmeler
Güneş, Bayram
İktisadi kalkınma yarışı, çoğu zaman mevcut sistemin eşitsizlik üreten doğasınıgörmemize engel olmaktadır. Uluslararası güç ilişkileri ve sınıfsal gerçekliklerdensoyutlanmış analizler, ana akım kalkınma yazınını kaplamış görünmektedir. Bunlardanbiri de bölgesel kalkınma alanının yeni gözdelerinden biri olan 'endüstriyel kümelenme'çalışmalarıdır.Toplumsal alana ilişkin güven, karşılıklılık, dayanışma ve aidiyet gibi bazı değerleribölgesel kalkınma çabalarının bir bileşeni haline getirerek 'toplulukçu bir piyasa'tahayyülü oluşturan kümelenme konsepti, son yıllarda oldukça ilgi görmektedir.Endüstriyel bölgelerin sağladığı dışsallıkları, bahsi edilen 'sosyal sermaye' unsurlarıylaaktive etme veya geliştirme çabası olarak değerlendirilebilecek kümelenme girişimleri,araştırmacılar nezdinde pozitif bir karşılık bulmaktadır. Ancak, bu girişimlere dairyapılan analizler kalkınma meselesinin ele alınışındaki sakatlıkları aynen içermektedir.Bu çalışma, teknoloji teması üzerinden, endüstriyel bölgeler ve bunun üzerinebina edilen kümelenme girişimlerine dair yazının eleştirel bir değerlendirmesiniiçermektedir. Çalışmada, konseptin dönüşümünü sağlayan bazı temel tartışmaların yanısıra, endüstriyel bölgelerin uluslararası işbölümü içerisindeki yeri, bölgesel harmoniçabalarının ideolojik imaları ve konseptin önemli yapıtaşlarından biri olan üniversitesanayiişbirliklerinin yarattığı sorunlar gibi ilgili yazının ihmal ettiği konular ele alınmıştır.
AtıfTR Dizin1İncele - MakaleYalnız künye2017Malahit Cevherinin Perklorik Asit Çözeltilerindeki Çözünürlüğünün İncelenmesi
Karacahan, Mehmet Kayra; Demirkiran, Nizamettin
Hidrometalurji sulu çözeltilerde kimyasal reaksiyonlar vasıtasıyla metal, metal tuzları ve bileşiklerinin üretimini kapsar. Oksitli bakır cevherlerindeki bakır, hidrometalurjik yöntemler yardımıyla kazanılabilir. Sözü edilen metodun ilk aşaması katı-sıvı kütle transferini içeren liç prosesidir. Bu proseste katı cevher uygun bir çözücü ile çözündürülür ve metal değerler çözelti ortamına transfer edilir. Mevcut çalışmada, oksitli bir bakır cevheri olan malahitin sulu perklorik asit çözeltilerindeki çözünürlüğü incelenmiştir. Malahit cevherindeki bakır, çinko ve demirin çözünme davranışı belirlenmiştir. Cevherdeki bakırın çözünürlüğü üzerine asit derişimi, reaksiyon sıcaklığı, ortalama katı tanecik boyutu, katı/sıvı oranı ve karıştırma hızının etkileri araştırılmıştır. Bütün deneysel parametrelerin bakırın çözünmesi üzerinde önemli bir etkiye sahip oldukları gözlenmiştir. Asit derişimi, reaksiyon sıcaklığı ve karıştırma hızının artmasıyla, katı/sıvı oranı ve katı tanecik boyutunun ise azalmasıyla cevherdeki bakır liçinin arttığı tespit edilmiştir. Cevherdeki demirin çözünürlüğünün asit derişiminden oldukça etkilendiği gözlenmiştir. Reaksiyon koşullarının kontrol edilmesiyle çözelti ortamına geçen bakır miktarının yüksek, demir miktarının ise düşük seviyelerde tutulabileceği belirlenmiştir. Liç prosesi ile ilgili kinetik analiz yapılmış ve reaksiyon hızının karışık kinetik kontrollü modele uyduğu belirlenmiştir. Liç prosesinin aktivasyon enerjisi 30,94 kJ/mol olarak hesaplanmıştır
- MakaleYalnız künye2017Taguchi Tekniği Kullanılarak SAE 1021/ Dillidur 400 / Dillimax 500 Çeliklerinin Sürtünme Kaynağı için İşlem Parametrelerinin Optimizasyonu
Celik, Ertugrul; Eski, Özkan; Uzun, Arif
Bu çalışmanın amacı sürtünme kaynağı ile birleştirilen SAE 1021 karbonlu çelikler ile aşınma direnci yüksek Dilludur 400 ve yüksek dayanıma sahip Dillimax 500 çeliklerin mekanik özellikleri üzerine etki eden parametrelerin optimizasyonunu Taguchi analiz yöntemi ile sağlamaktır. Taguchi analizi, yığma basıncı ve sürtünme devir hızı gibi kaynak parametreleri ile birleştirilen malzeme türlerini optimize etmek için istatiksel deneysel tasarım olarak kullanılmaktadır. Bu amaçla çelikler 1250, 1500 ve 1750 dev/dak sürtünme devirlerinde ve 4, 6 ve 8 MPa yığma basınçlarında birleştirilmiştir. Bağlantının mekanik özelliklerini belirlemek için çekme testi ve mikro sertlik ölçümleri uygulanmıştır. Analiz sonuçlara göre malzeme çifti olarak Dillidur 400-Dilimax 500, sürtünme devri olarak 1500 dev/dak ve yığma basıncının 6 MPa seçilebileceği tespit edilmiştir. Ayrıca deneysel sonuçlara göre maksimum çekme dayanımı 651 MPa ile Dillidur 400- Dillidmax 500 çiftinde elde edilmiştir. Aynı malzeme çiftinde kaynak ara yüzeyi sertlik değeri 353 HV'dir
AtıfTR Dizin1İncele - MakaleYalnız künye2017The relationships between length-weight, and meat yield of freshwater crayfish (Astacus leptodactylus Eschscholtz, 1823) of Aktaş Lake
Aksu, Önder; Kurt Kaya, Gülderen
In this study, determination of morphometric analysis and meat yields were aimed in male and female crayfish caught from Aktaş Lake, where commercial crayfish hunting is prohibited. The length distribution of 157 crayfish (nmale= 81 and nfemale= 76) was examined in the study. It was determined that there was a strong linear relationship between carapace length and weight of both male and female crayfish (r ♂ = 0.962, r ♀= 0.976, r ♂ + ♀ = 0.9712). The "b values" obtained as a result of regression analysis showed that male crayfish had positive weight gain, and female crayfish had negative weight gain, and all individuals had positive allometric weight gain (b♂= 3.041, b♀= 2.954 ve b♂+♀=3.0167). It was shown that there was a linear relationship between abdominal meat quantities and carapace lengths of male and female crayfish. Abdominal meat yield, chelae meat yield and total meat yield in male crayfish was 10.03%, 4.60% and 14.63%, respectively, abdominal meat yield, chelae meat yield and total meat yield in female crayfish was 11.59%, 2.73% and 14.32%, respectively
AtıfTR Dizin2İncele - MakaleYalnız künye2017Tanacetum zahlbrucknerı (náb.) grıerson' nun sekonder metabolitleri ve antioksidanetkileri*
Paksoy, Mehmet Yavuz; Gürbüz, Perihan; Karatoprak, Gökçe Şeker; Koşar, Müberra; Eroğlu, Duygu; Doğan, Şengül
Bu çalışma kapsamında Asteraceae familyasına dahilendemik bir tür olan Tanacetum zahlbruckneri (Náb.)Grierson bitkisinin toprak üstü kısımlarından hazırlananmetanol ekstresinin DPPH?, ABTS?+süpürücü aktivitesi ve ?-karoten-linoleik asitle oksidasyon yöntemi ile antioksidan aktiviteleri, Folin- Ciocalteuyöntemiyle toplam fenol, flavonit ve flavonol içeriğiincelenmiştir. Metanol ekstresinden sıvı-sıvı partisyonyöntemiyle n-hekzan, dietil eter, diklorometan ve nbutanol ekstreleri hazırlanmış, n-butanol ekstresindençeşitli kromatografik yöntemler kullanılarak, klorojenikasit (1), rutin (2) ve konduritol F (3) izole edilmiştir.Elde edilen bileşiklerin yapıları spektroskopik yöntemler (IR,1H-NMR,13C-NMR, 2D-NMR, IR, MS) kullanılarakaydınlatılmıştır. Bu çalışma ile Konduritol F Tanacetumtürlerinden ilk defa izole edilmiştir. Klorojenik asit verutinin bitkinin metanol ekstresindeki kantitatif tayiniYüksek Basınçlı Sıvı Kromatografisi ile gerçekleştirilmiştir. İzole edilen bileşiklerin antioksidan aktiviteleri ölçülmüş ve klorojenik asitin aktivitesi, rutin vemetanol ekstresinden daha yüksek bulunmuştur.
AtıfTR Dizin1İncele - MakaleYalnız künye2017Scopus SJRQ3Enhancing the potential of employing thermosetting powder recyclates as filler in LLDPE by structural modifications
Kismet, Yilmaz; Wagner, Manfred H.
Potential of using powder coating recyclates as filler material for polyethylene compounds was investigated. Due to their strong adhesion to the metal surface during compounding at extrusion temperatures higher than 100 degrees C, the coating powder recyclates were chemically modified to facilitate its processing by extrusion and injection molding at higher temperatures. For this purpose, the coating powder recyclates were first hydrolyzed with addition of an alcohol as swelling agent. The deactivated recyclates were mixed at different ratios with the matrix polymer, a linear low-density polyethylene (LLDPE). The mixtures obtained were then compounded by extrusion and subsequently injection molded to plates to produce specimens for testing. The resulting samples were characterized mechanically by tensile, bending, and impact strength tests. In summary, the powder coatings recyclates can be processed as filler for thermoplastic material, without any adhesion problems up to 160 degrees C and 180 degrees C in the extruder and in the injection molding machine, respectively.
AtıfWoS12OpenAlex13
İncele - MakaleYalnız künye2017Scopus SJRQ4COMPARATIVE MICROMORPHOLOGY AND ANATOMY OF CHRYSOCHAMELA (FENZL) BOISS. (CRUCIFERAE) GROWING IN TURKEY
Çakilcioglu, Ugur; Paksoy, Mehmet Y.; Babacan, Ebru Yuce; Polat, Ridvan
The micromorphological and anatomical characteristics of three species of Chrysochamela genus have been comparatively presented by using light microscopy (LM) and scanning electron microscopy (SEM). The micromorphological studies are related to the epidermal and seed surface. In anatomical studies, cross sections of the stems and leaves were examined and biometric measurement of cell and tissues were made. The stem and leaf anatomy of the genus were described. In addition, the stomatal index rate and stomatal index of these species were calculated. The leaf is dorsiventral in mesophyll-type. Except its C. noeana taxon, stellate trichomas are coincided in other taxon. Stoma can be observed on both sides of the leaf. Whereas stoma index rates of this genus were found in the range of 0.7 - 1.2, stoma types were observed as aniocytic and anomocytic. Seed surface of the genus can be found in reticulate, verrucae or in verrucaerugose types. In conclusion, the presence/absence of trichome over stem and leaves, the presence/absence of collenchyma in middle the vascular region, the seed shape, epidermal cell shape, and the characteristics of anticlinal boundaries and periclinal cell walls were found to be the important characters for identification of the Chrysochamela genus.
AtıfWoS3İncele - MakaleAçık Erişim2017Co-Author Link Prediction from Academic Databases
Burhan, Yucel; Das, Resul
Social networks: social communication platforms where individuals exhibit their attitudes and behaviors, gestures and mimics in symbolic actions in a virtual environment. Their swift development and wide usage proportion rises social networks' necessity and popularity. People communicate with each other and share some data like idea, thinking, photo, video and location. When this data is processed, very important information is obtained about the users. In this light, it is possible to make important estimates about the users. To analyze a network, the network model, properties of graph structure, criteria and metrics must be calculated first. In this study, similarity calculation between the subjects which authors studied has been done. In this application, five suitable models (Jaccard Index, Sorensen Index, Common Neighbor, L. H. Newman Index and Salton Index methods) are applied to the data set generated by randomly selected twenty writers. In order to evaluate the calculation results; the results of the similarity calculation between authors with known linkages are used as reference values. Comparisons of obtained similarity values with reference values result in new connections. These links reveal that authors can publish articles together.
AtıfWoS1OpenAlex5İncele - MakaleAçık Erişim2017Investigation and monitoring of tetracycline and degradation products in waters of trout farm
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. Tetracycline (TC), 4-epitetracycline (ETC), 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.
AtıfWoS1OpenAlex1İncele - MakaleYalnız künye2017Scopus SJRQ3SEASONAL CHANGES IN ANTIOXIDANT DEFENCE SYSTEM ON BROWN TROUT (SALMO SP.) IN MUNZUR STREAM
Can, Erkan; Cikcikoglu-Yildirim, Nuran; Erdogan, Devrim
The aim of the present study was to evaluate the oxidant and antioxidant status of the indigenous brown trout (Salmo sp.) caught from Munzur stream (Tunceli, Turkey) at different seasons in different tissues. Glutathione peroxidase (GPx), catalase (CAT), superoxide dismutase (SOD), total antioxidant status (TAS) and total oxidant status (TOS) levels were measured. These measurements were read in a microplate reader using commercial kits with ELISA method. At the end of the study, significant variations of oxidative stress biomarkers were observed between seasons and tissues. The results of this study show that oxidative stress responses in tissues of Salmo sp. are sensitive to the tissues and the seasons in relation to the contaminants, climatic parameters and reproductive period in Munzur stream. The selected parameters are in valuable biomarkers for monitoring of water systems since at molecular levels they give an early warning signal of xenobiotics on aquatic organisms. It was concluded that the measurement of antioxidants biomarkers known such as SOD, CAT and GSH-Px activities, TAS and TOS levels may also be promising indicators of an oxidant impact on aquatic organisms.
AtıfWoS2İncele - MakaleAçık Erişim2017Stability of fish protein hydrolysate from heads of gilthead sea bream (Sparus aurata), european sea bass (Dicentrarchus labrax) and rainbow trout (Oncorhyncus mykiss) during storage
Erol, Nida Demirtas; Erdem, Omer Alper; Çakli, Sukran
In the present study, protein hydrolyzate was obtained from the head region from the wastes produced during filleting of seabream (Sparus aurata), seabass (Dicentrarchus labrax) and trout (Oncorhyncus mykiss) cultured in Turkey. After the functional and antioxidant properties of the obtained products were determined, the post-storage stability of the protein hydrolysates stored frozen for 6 months was determined by analysis. In this study, degree of hydrolysis, functional properties (protein solubility, emulsion properties, foaming properties, color properties, water holding capacity (WHC)), antioxidant properties (DPPH (1,1 -diphenyl-2-pic-ryhydrayl) free radical scavenging capacity, antioxidative activity, metal chelating) and determination of aminoacid sequencing were carried out in protein hydrolysate. To evaluate the effect of storage time on fish protein hydrolysates stored at -18 degrees C after production, the above-mentioned analyzes including functional and antioxidative properties were repeated at the end of the 6 month storage period. Results were interpreted using statistical analysis. According to the functional and antioxidative properties of fish protein hydrolyzate, the highest antioxidant activity was determined in seabream head hydrolyzate. The production yield of all fish protein hydrolysates is 5%. The functional and antioxidant properties of fish protein hydrolysates varied according to fish species.
AtıfWoS6OpenAlex7İncele - MakaleYalnız künye2017Scopus SJRQ3THE ROLE OF GLUTATHIONE IN THE DETOXIFICATION OF PERCHLOROETHYLENE
Sahilli, Yeliz Cakir
Environmental factors have important roles in the development of cancer. Especially, the exposure of chemicals existing in the workplace with people is a very important issue. People at such places are exposed to chemicals more especially via respiratory and dermal route. Thus, their health is under the risk. Dry cleaning centers are intensively subjected to PCE, which is a common chemical used at these work places, and the risk of cancer is very high for them. The main aim of the present study is to investigate, if PCE exposure results in glutathione efflux from human erythrocytes. In the present study, the changes in intracellular and extracellular non-protein sulfhydryl (NPSH) levels were determined in PCE exposed erythrocytes. PCE significantly depleted intracellular NPSH level in a time and concentration-dependent manner. PCE significantly increased the NPSH levels measured in the extracellular media. Along with the change in extracellular nonprotein thiol levels, significant increases in extracellular glutathione levels were detected. Erythrocyte membranes were not damaged over the course of PCE exposure as indicated by the absence of lactate dehydrogenase activity in the extracellular media. Utilization of MK571 an MRP inhibitor decreased the rate of glutathione efflux from erythrocytes suggesting a role for this membrane transporter in the process. The results of the present study indicate that erythrocytes efflux glutathione when exposed to PCE. In addition to glutathione oxidation, glutathione efflux also contributes to intracellular loss of glutathione when exposed PCE.
- MakaleYalnız künye2017Scopus SJRQ3PERSISTENCE OF TWO SULPHONYLUREA HERBICIDES IN WHEAT PLANTED FIELD, THRACE REGION IN TURKEY
Erguven, G. O.; Yildirim, N.
This study is concerning the environmental fate of chlorsulfuron and tribenuron-methyl herbicide in a wheat planted field at Thrace Region in Turkey. Use of herbicides containing these active ingredients is advised in the Marmara region in Turkey for cereal agriculture. The study was conducted in wheat planted fields where these herbicides were used. Over nine months, in each two or three week periods, soil samples were obtained from selected sampling points and herbicide residuals were determined by gas chromatography with electron capture detector (GC-ECD) and high performance liquid chromatography-mass spectrometry (HPLC-MS). As a result of these studies, persistence of chlorsulfuron was determined as approximately 1.2% at the second half of June, 2016 and tribenuron methyl seemed to be approximately 1% at the end of May, 2016. The results of the present study showed that chlorsulfuron is generally adsorbed weakly by soil when compared to tribenuron-methyl. pH, organic material, climatic factors and clay content of soil were the main factors influencing the adsorption and desorption properties of the herbicides. The results of this study demonstrated that chlorsulfuron and tribenuron-methyl residues in the soil might depend on their different chemical structures, soil temperature, precipitation and humidity.
AtıfWoS4İncele - MakaleYalnız künye2017Scopus SJRQ4COMPARATIVE VEGETATIVE ANATOMY AND FRUIT MICROMORPHOLOGY OF THE GENUS KUNDMANNIA SCOP. AND THEIR TAXONOMICAL SIGNIFICANCE
Paksoy, Mehmet Yavuz; Polat, Ridvan; Çakilcioglu, Ugur
Kundmannia Scop. is a genus of the Apiaceae (Umbelliferae) family which consists of 463 genera and ca. 3500 species. Kundmannia belongs to the Oenantheae tribe and are well represented in Spain, France, Italy, Turkey, Syria and North Africa where they grow on calcareous or siliceous soils. In this study; fruit micromorphology and the vegetative anatomy of the Kundmannia species growing in Turkey were compratively examined for the first time. The anatomical sections were taken from the stem, ray, leaf and and petiole of the plants for taxonomic deduction. Various tissues of taxa were given comparative micro anatomical measurements according to the anatomical studies, lignified or non-lignified medullary rays in stems, stomata types (diacytic and anomocytic), stomata index ratio (0.58 - 0.7), fruit shape and fruit epidermal surface are considered as important anatomical characters. In the fruit micromorphology, the cells on the mericarp surface have seen as striate and rugulate while the surface between the two ribs in the species have observed rugulate or striate. Fruit micromorphology and vegetative anatomy of the genus Kundmannia has not been studied before. However, the anatomical structure of the genus has been elucidated in this study, for the first time.
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