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SYNTHESES AND CHARACTERIZATIONS OF OLIGO(AZOMETHINE ETHER)S DERIVED FROM 2,2'-[1,4-ENYLENEBIS(METHYLENEOXY)]DIBENZALDEHYDE AND 2,2'-[1,2-PHENYLENEBIS(METHYLENEOXY)]DIBENZALDEHYDE

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Chinese Journal of Polymer Science 2012年第5期30卷 682-693页

作者： Ismet kaya Süleyman Culhaoglu Canakkale Onsekiz Mart University Faculty of Science and ArtsDepartment of ChemistryCanakkale 17020Turkey

The oligo（azomethine ether）s were synthesized via polycondensation of alkyl diamines with aromatic dialdehydes. Two series of dialdehydes, namely 2,2＇-[1,2-phenylenebis（methyleneoxy）]dibenzaldehyde [2,2＇-1,2-（PBMODB）] and 2,2＇- [1,4-phenylenebis（methyleneoxy）]dibenzaldehyde [2,2＇-I,4-（PBMODB）] were prepared from the condensation reactions of salicylaldehyde with o-xylenedibromide and p-xylenedibromide, respectively. The structures of dialdehydes and oligomers were determined by FT-IR, 1H-NMR and 13C-NMR. The thermal analyses of oligomers were conducted by DSC and TG/DTA techniques, respectively. Size exclusion chromatography （SEC） technique was also used to determine molecular weights and molecular weight distributions of oligomers. Electrochemical properties of the synthesized products were investigated.

关键词： Polyazomethine Thermal analysis Dialdehyde Oligoazomethine.

SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTRICAL CONDUCTIVITY OF OLIGO[2-(THIEN-2-YLMETHYLENE)AMINOPHENOL]AND OLIGOMER-METAL COMPLEXES

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Chinese Journal of Polymer Science 2009年第4期27卷 465-477页

作者： smet kaya Aysel Aydin Department of Chemistry Faculty of Science and ArtsCanakkale Onsekiz Mart UniversityTR-17020CanakkaleTurkey

The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol (2-TMAP) has been accomplished by using air O_2,H_2O_2 and NaOCl oxidants in an aqueous alkaline medium between 20℃and 90℃.The structures of the monomer and oligomer were confirmed by FT-IR,UV-Vis,~1H-NMR and ^(13)C-NMR and elemental ***-DTA,size exclusion chromatography(SEC) techniques and solubility tests were applied for *** ~1H-NMR and ^(13)C-NMR data show that the polymeriz...

关键词： Air O_2 NaOCl O1igo[2-(thien-2-yl-methylene)aminophenol] Oxidative polycondensation Thermal analysis Electrical conductivity Oligomer-metal complex compounds

Synthesis, characterization and radioluminescence properties of erbium-doped yttria phosphors

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International Journal of Minerals,Metallurgy and Materials 2021年第12期28卷 1983-1990页

作者： Fatma Unal Faruk kaya Kursat Kazmanli Metallurgical and Materials Engineering Department Hitit UniversityCorum 19030Turkey Metallurgical and Materials Engineering Department Istanbul Technical UniversityMaslakIstanbul 34469Turkey

Radioluminescence(RL)behaviour of erbium-doped yttria nanoparticles(Y2O_(3):Er^(3+)NPs)which were produced by sol-gel method was reported for future scintillator *** with dopant rates of 1 at%,5 at%,10 at%and 20 at%Er were produced and calcined at 800℃,and effect of increased calcination temperature(1100℃)on the RL behaviour was also reported.X-ray diffraction(XRD)results showed that all phosphors had the cubic Y2O_(3) bixbyite-type *** lattice parameters,crystallite sizes(CS),and lattice strain values were calculated by Cohen-Wagner(C-W)and Williamson-Hall(W-H)methods,***,the optimum solubility value of the Er^(3+)dopant ion in the Y2O_(3) host lattice was calculated to be approximately 4 at%according to Vegard’s law,which was experimentally obtained from the 5 at%Er^(3+)ion containing *** peak shifts in XRD patterns and X-ray photoelectron spectroscopy(XPS)analyses confirmed that Er^(3+)dopant ions were successfully incorporated into the Y2O_(3) host ***-resolution transmission electron microscopy(HRTEM)results verified the average CS values and agglomerated NPs morphologies were *** electron microscopy(SEM)results showed the neck formation between the particles due to increased calcination *** a result of the RL measurements under a Cu KαX-ray radiation(wavelength,λ=0.154 nm)source with 50 kV and 10 mA beam current,it was determined that the highest RL emission belonged to 5 at%Er doped *** the RL emission spectrum,the emission peaks were observed in the wavelength ranges of 510-575 nm(2H11/2,4S3/2-4I15/2;green emission)and 645-690 nm(4F9/2-4I15/2;red emission).The emission peaks at 581,583,587,593,601,611 and 632 nm wavelengths were also *** was found that both dopant rate and calcination temperature affected the RL emission *** color shifted from red to green with increasing calcination temperature which was attributed to the increased crystallinit

关键词： structure. temperature. solution.

SYNTHESIS,CHARACTERIZATION,THERMAL ANALYSIS,CONDUCTIVITY AND BAND GAPS OF OLIGO {4-[(2-HYDROXYL-1-NAPHTHYL)METHYLENE]AMINOBENZOIC ACID}

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Chinese Journal of Polymer Science 2009年第2期27卷 209-219页

作者： Ismet kaya Ali Bilici Department of Chemistry Faculty of Science and Artsanakkale Onsekiz Mart UniversityTR-17020anakkaleTurkey Department of Chemistry Faculty of ScienceAnkara UniversityTandoganAnkaraTurkey

The oxidative polycondensation reaction conditions of 4-[(2-hydroxyl-1-naphthyl)methylene]aminobenzoic acid (4-HNMABA) with H2O2,air O2and NaOCl were studied in an aqueous alkaline medium between 40℃and 90℃.The structure of oligo {4-[(2-hydroxyl-1-naphthyl)methylene]aminobenzoic acid} (O-4-HNMABA) was characterized by using1H-NMR,13C-NMR,FT-IR,UV-Vis,size exclusion chromatography (SEC) and elemental analysis *** the optimum reaction conditions,the yield of O-4-HNMABA was found to be 70% for H2O2oxidant,94% for air O2oxidant and 87% for NaOCl *** to the SEC analysis,the number-average molecular weight (Mn),weight-average molecular weight (Mw) and polydispersity index (PDI) values of O-4-HNMABA were found to be 850,1350 and 1.59,using H2O2,1800,2200 and 1.22,using air O2and 2200,3000 and 1.36,using NaOCl,***-DTA analyses showed that O-4-HNMABA was more stable than *** highest occupied molecular orbital,the lowest unoccupied molecular orbital and electrochemical energy gaps (E′g) of 4-HNMABA and O-4-HNMABA were found to be -6.34,-6.56; -2.67,-3.04;3.67 and 3.52 eV,respectively,by cyclic voltammetry (CV).According to UV-Vis measurements,optical band gaps (Eg) of 4-HNMABA and O-4-HNMABA were found to be 3.12 and 3.03 eV,respectively.

关键词： Oligo {4-[(2-hydroxyi-1-naphthyl)methylene]aminobenzoic acid} Oxidative polycondensation Conductivity Electrochemical and optical band gaps.

Pollen Morphology of Acinos Miller Species Growing in Turkey

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Journal of Integrative Plant Biology 2007年第9期49卷 1386-1392页

作者： Ayla kaya Hatice Kutluk Anadolu University Faculty of PharmacyDepartment of Pharmaceutical BotanyEskisehir 26470 Turkey Osmangazi University Department of Geology (Paleobotany)Bati Meselik Eskisehir 26040 Turkey

The pollen morphology of six taxa of the genus Acinos Miller has been examined under scanning electron microscopy （SEM） and a description of each taxon has been given. Acinos pollen is stephanocolpate （hexacolpate）. Two main exine sculpturing types, foveolate-reticulate （only in subspecies of A. troodi） and reticulate have been defined. The dimension for the polar length ranges between 25.8-47.4 μm, equatorial width 24.5-34.4μm, colpus length 20.0-40.5μm and colpus width 1.2-2.5 μm. The shape is mostly subprolate to prolate, seldomly prolate-spheroidal. The results reveal rather uniform morphological features, however fine details are characteristic to differentiate the pollen taxa. Acinos pollen also share some common morphological features with the other Lamiaceae pollen.

关键词： Acinos Lamiaceae morphology polen scanning electron microscopy.

Training Neuro-Fuzzy by Using Meta-Heuristic Algorithms for MPPT

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Computer Systems Science & Engineering 2023年第4期45卷 69-84页

作者： Ceren Baştemur kaya Ebubekir kaya Göksel Gökkuş Department of Computer Technologies Nevsehir Vocational CollegeNevsehir Haci Bektas Veli UniversityNevşehir50300Turkey Department of Computer Engineering Faculty of Engineering and ArchitectureNevsehir Haci Bektas Veli UniversityNevşehir50300Turkey Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitectureNevsehir Haci Bektas Veli UniversityNevşehir50300Turkey

It is one of the topics that have been studied extensively on maximum power point tracking(MPPT)*** or soft computing methods are used for *** soft computing approaches are more effective than traditional approaches,studies on MPPT have shifted in this *** study aims comparison of performance of seven meta-heuristic training algorithms in the neuro-fuzzy training for *** meta-heuristic training algorithms used are particle swarm optimization(PSO),harmony search(HS),cuckoo search(CS),artificial bee colony(ABC)algorithm,bee algorithm(BA),differential evolution(DE)and flower pollination algorithm(FPA).The antecedent and conclusion parameters of neuro-fuzzy are determined by these *** data of a 250 W photovoltaic(PV)is used in the *** effective MPPT,different neuro-fuzzy structures,different membership functions and different control parameter values are evaluated in *** training algorithms are compared in terms of solution quality and convergence *** strengths and weaknesses of these algorithms are *** is seen that the type and number of membership function,colony size,number of generations affect the solution quality and convergence speed of the training *** a result,it has been observed that CS and ABC algorithm are more effective than other algorithms in terms of solution quality and convergence in solving the related problem.

关键词： Optimization meta-heuristic algorithm neuro-fuzzy MPPT photovoltaic system

Interaction between seed size and NaCl on germination and early seedling growth of some Turkish cultivars of chickpea(Cicer arietinum L.)

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第5期9卷 371-377页

作者： Muharrem kaya Gamze kaya Mehmet Demir kaya Mehmet ATAK Sevil SAGLAM Khalid Mahmood KHAWAR Cemalettin Yasar CIFTCI Department of Field Crops Faculty of AgricultureSuleyman Demirel University Central Research Institute for Field Crops Ministry of Agriculture and Rural Affairs Department of Field Crops Faculty of AgricultureMustafa Kemal University Department of Field Crops Faculty of AgricultureUniversity of Ankara

Chickpea is an important food legume crop of Turkey and is largely grown for human consumption on low moisture or salt-affected soils. The objective of the study was to find the effects of NaCl stress at electrical conductivities of 4.5, 8.6, 12.7 and 16.3 dS/m and seed sizes （7, 8 and 9 mm） on germination and early seedling growth of three popular chickpea cultivars （AKN-97, Gokce and Uzunlu-99）. Mean frequency of germination, germination time, germination index, root length, shoot length and seedling fresh weight showed seed size-dependent responses ofcultivars to salt stress. In general, small seeds germinated and grew more rapidly compared to medium and large seeds of the same cultivars against all levels of salt stress, with the best results in cultivar Uzunlu-99. No effect of NaCl treatments was observed on frequency of germination; however, a drastic decrease in early seedling growth was recorded at increased NaC1 concentrations. Regression analysis results showed a significantly positive relationship （P〈0.01） between seed size and mean germination time, whereas a significantly negative relationship was recorded between seed size and germination index, root length, shoot length. Moreover, linear regression values apparently confirmed that increased seed size in each cultivar affected decreased germination index, root and shoot lengths with enhanced mean germination time. Thus, it was concluded that the use of small seeds could considerably reduce the production costs of chickpea in salt-affected soils.

关键词： Chickpea (Cicer arietinum L.) NaCl stress Cultivar Seed size Germination

SYNTHESIS,CHARACTERIZATION AND ANTIMICROBIAL PROPERTIES OF 4-[(4-HYDROXYBENZYLIDENE)AMINO]PHENOL AND ITS POLYMER

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Chinese Journal of Polymer Science 2007年第5期25卷 461-472页

作者： Ismet kaya Suleyman Culhaoglu Dilek Senol Department of Chemistry Faculty of Science and Arts Canakkale Onsekiz Mart University TR-17020 Canakkale Turkey

The oxidative polycondensation reaction conditions of 4-[（4-hydroxybenzylidene） amino] phenol （4-HBAP） were studied with H2O2, air oxygen and NaOCl in an aqueous alkaline medium between 50 and 90℃. The structures of the obtained monomer and polymer were confirmed by FT-IR, UV-Vis, 1H- and 13C-NMR and elemental analysis. The characterization was made by TG-DTA, size exclusion chromatography （SEC） and solubility tests. At the optimum reaction conditions, the yield of poly[4-（4-hydroxybenzylidene amino） phenol] （P-4-HBAP） was found to be 48.3% （for H2O2 oxidant）, 80.5% （for air O2 oxidant） and 86.4% （for NaOCl oxidant）. According to the SEC analysis, the number-average molecular weight （Mn）, weight-average molecular weight （Mw） and polydispersity index （PDI） values of P-4-HBAP was found to be 8950, 10970 g tool^-1 and 1.225, respectively, using H202; and l l610, 15190 g tool^-1 and 1.308 respectively, using air 02 and 7900, 9610 g mol^-1 and 1.216, respectively, using NaOC1. According to TG-DTA analyses, P-4-HBAP was more stable than 4-HBAP against thermal decomposition. The weight loss of P-4-HBAP was found to be 49.27% at 1000℃. The highest occupied molecular orbital （HOMO） and the lowest unoccupied molecular orbital （LUMO） values calculated from electrochemical measurement. Electrochemical energy gaps （Eg＇） of 4-HBAP and P-4-HBAP were found to be -5.46, -5.28; -2.26, -2.67; 3.20 and 2.61 eV, respectively. According to UV-Vis measurements, optical band gap （Eg） of 4-HBAP and P-4-HBAP were found to be 3.34 and 3.01 eV, respectively. Also, antimicrobial activities of 4-HBAP and P-4-HBAP were examined against selected some bacteria. The electrical conductivity of the polymer was measured after doping with iodine.

关键词： Air oxygen H2O2 NaOCl Poly[4-(4-hydroxybenzylidene amino) phenol] Oxidative polycondensation Thermal analysis Conductivity Antimicrobial and bad gap.

Metabolic-associated Fatty Liver Disease(MAFLD):A Multi-systemic Disease Beyond the Liver

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Journal of Clinical and Translational Hepatology 2022年第2期10卷 329-338页

作者： Eda kaya Yusuf Yilmaz Department of Internal Medicine Ruhr University BochumUniversity Hospital Knappschaftskrankenhaus BochumBochumGermany Department of Gastroenterology School of MedicineMarmara UniversityIstanbulTurkey Liver Research Unit Institute of GastroenterologyMarmara UniversityIstanbulTurkey

Nonalcoholic fatty liver disease(NAFLD)is a multisystemic clinical condition that presents with a wide spectrum of extrahepatic manifestations,such as obesity,type 2 diabetes mellitus,metabolic syndrome,cardiovascular diseases,chronic kidney disease,extrahepatic malignancies,cogni-tive disorders,and polycystic ovarian *** NAFLD patients,the most common mortality etiology is cardiovascular disorders,followed by extrahepatic malignancies,diabetes mellitus,and liver-related ***,the severity of extrahepatic diseases is parallel to the severity of *** clinical practice,awareness of the associations of concomitant diseases is of major importance for initiating prompt and timely screening and multidisciplinary management of the disease *** 2020,a consensus from 22 countries redefined the disease as metabolic(dysfunction)-associated fatty liver disease(MAFLD),which resulted in the redefinition of the corre-sponding *** the patients diagnosed with MAFLD and NAFLD mostly overlap,the MAFLD and NAFLD populations are not *** this review,we compared the associations of key extrahepatic diseases between NAFLD and MAFLD.

关键词： Metabolic diseases Fatty liver Liver fibrosis Diabetes mellitus,type 2 Cardiometabolic risk factors