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Найденный: 14 Экземпляр 0.001 sn
Год публикации : 2020 ✕Базы данных : Sciencedirect ✕
Коллекция [4]
Ученые [12]
Устойчивое развитие ООН [10]
Факультет / Институт [5]
Вид публикации [2]
Год публикации [1]
Язык [1]
Источник [12]
Базы данных [3]
Вид индекса [4]
Издатель [1]
Кафедра [8]
Национальный/Международный [1]
Тематический рубрикатор [35]
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Synthesis of magnetic halloysite nanotube-based molecularly imprinted polymers for sensitive spectrophotometric detection of metoclopramide in urine samples

Nahit AKTAŞ

A novel molecularly imprinted polymer was synthesized on magnetic halloysite nanotube via surface initiated reversible addition-fragmentation chain transfer polymerization in the presence of 2-aminoethylmethacrylamide, 2-Cyano-2-propyl benzodithioate, ethylene glycol dimethacrylate (EGDMA) and azobis(isobutyronitrile) for sensitive and selective spectrophotometric determination of metoclopramide in urine samples. The synthesized imprinted polymer was characterized by several surface characterization techniques and the results indicated there was a thin polymer network on the magnetic halloysit ...Более

Статья 2020 Mühendislik Fakültesi Materials Science and Engineering: C - Materials For Biological Applications106 147 Просмотры
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Synthesis and preparation of responsive poly(Dimethyl acrylamide/gelatin and pomegranate extract) as a novel food packaging material

Nahit AKTAŞ

In this study a novel and smart multi-functional hydrogel (MFH) was synthesized from N, N dimethyl acrylamide (DMAAm), gelatin, citric acid (CA) and pomegranate extract (PE) for instant and easy monitoring of the color change in MFH due to changes in medium conditions such as pH and temperature. MFH was utilized as food packaging material, equipped with the developed properties. MFH was synthesized with a redox polymerization technique in film form on petri dishes. Mechanical and water resistance properties of MFH were improved by CA and N, N, methylenebisacrylamide, while PE was used to gain ...Более

Статья 2020 Mühendislik Fakültesi Materials Science and Engineering: C - Materials For Biological Applications108 99 Просмотры
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Power system harmonic and interharmonic estimation using Vortex Search Algorithm

Özgül SALOR-DURNA

In this paper, a vortex search algorithm (VSA) based method designed to estimate power system harmonics and interharmonics for highly time-varying cases is presented. Time-variation in the power system is due to the nonlinear and stochastic loads such as electric arc furnaces (EAF) and it is one of the major cause of the power quality problems. The proposed algorithm is tested on both synthetic signals and also field data obtained from transmission system substations supplying EAF plants. The results are compared with other search algorithm-based methods reported in the literature and shown th ...Более

Статья 2020 Mühendislik Fakültesi Electric Power Systems Research182 64 Просмотры
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The synthesis of a novel DDPHC diazonium salt: Investigation of its usability in the determination of phenol and chlorophenols using CV, SWV and DPV techniques

Ali Osman SOLAK

Electrochemical and spectroelectrochemical properties of newly synthesized diazonium salt of 2-(2-(1,3-dioxo- 3,3a-dihydro-1H-isoindol-2(7aH)-yl)-1-(3 methyl-3-phenylcyclobutyl)ethylidene) hydrazinecarboxamide (DDPHC-DAS) were studied using glassy carbon (GC) electrode. In the current study, surface characterization was performed by cyclic voltammetry (CV). Besides electrochemical impedance spectroscopy (EIS) was used for the electrochemical and spectroelectrochemical characterization. Surface images were obtained using scanning electron microscopy (SEM). After completion of modification and c ...Более

Статья 2020 Mühendislik Fakültesi Inorganic Chemistry Communications116 38 Просмотры
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Boron-containing magnetic nanoparticles from Co, Ni, and Fe chloride salts and their catalytic performances on 4-nitrophenol reduction

Nahit AKTAŞ

In this study, magnetic metal nanoparticles (MNP) were prepared by using Fe, Co and Ni ions and NaBH4 as reducing agents in oil-in-water microemulsion system. The prepared MNP were used as catalyst in 4-Nitro phenol (4-NP) reduction to 4-Aminophenol (4-AP). It was found that magnetic Co MNP performed superior catalytic performances than Fe and Ni MNP for 4-NP reduction. The catalytic reduction experiments revealed that as the concentration of reducing agent, NaBH4 that was used in the preparation of Co MNP was increased, the complete conversion time for 4-NP to 4-AP was decreased as the sizes ...Более

Статья 2020 Mühendislik Fakültesi Inorganic Chemistry Communications116 108 Просмотры
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The first combined archaeological and archaeometric analyses on Bronze Age pottery from Kyrgyzstan (Uch Kurbu site)

Kubatbek TABALDİYEV

The integration of the Bronze Age populations in Kyrgyzstan into the Andronovo sphere is largely based on the resemblance of the ceramic material discovered at the Kyrgyz sites with the pottery from various Andronovo sites, which has been explained by human migrations. However, very few detailed pottery studies have been conducted, and no archaeometric analyses have been applied to date to the material from Kyrgyzstan. We present a first investigation on Bronze Age pottery from Uch Kurbu (Kyrgyzstan) through a combined archaeological (field-based stylistic and macroscopic examinations) and arc ...Более

Статья 2020 Edebiyat Fakültesi Journal of Archaeological Science: Reports31 125 Просмотры
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Performance analysis of healthcare supply chain management with competency-based operation evaluation

Adem GÖLEÇ | Gülnara KARADENIZ

The performance analysis of healthcare supply chain management (SCM) has become extremely important as healthcare systems have begun to struggle to enhance operational efficiency and diminish costs. The aim of this study was to measure healthcare SCM in accordance with competency-based operation evaluation. The study was organized as a hierarchical structure based on the main processes, sub-processes, and their operations of healthcare SCM. It is considerably difficult to quantify the competency of an operation. Therefore, a fuzzy model was developed to measure healthcare SCM performance accor ...Более

Статья 2020 İktisadi ve İdari Bilimler Fakültesi Computers & Industrial Engineering146 58 Просмотры
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Preparation of stabilized silver and tin nanocomposites by electrical discharge

Emil ÖMÜRZAK

In this study silver and tin nanocomposites were synthesized by electro spark dispersion in ethanol. Resulting nanocomposite was characterized by using the powder x-ray diffraction and emission scanning electron microscopy. It was found by X-ray phase analysis that the product obtained by electro spark joint dispersion of silver and tin in ethanol consists of two phases: Ag3Sn and beta-Sn. The results of processing SEM micrographs of the product of the Ag-Sn system show that the obtained phases are spherical nanostructures with sizes of 30-60 nm. This size of nanostructures was associated wit ...Более

Доклады конференции 2020 Mühendislik Fakültesi MATERIALS TODAY-PROCEEDINGS31 ( Part 3 ) 103 Просмотры
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Mapping burial mounds based on UAV-derived data in the Suusamyr Plateau, Kyrgyzstan

Kubatbek TABALDİYEV | Künbolot AKMATOV

Located in the northern part of the Tian Shan Mountains, at an average elevation of over 2200 m.a.s.l., the Suusamyr Plateau is home to numerous archaeological sites. Nonetheless, there is little to no information available regarding the spatial characteristics and preservation conditions of these complex burial grounds. During the recent years, unmanned aerial vehicles (UAVs) have offered the possibility of fast acquisition of high -resolution images that facilitate the identification and documentation of archaeological sites and features. Given these advantages over 1500 ha (29 individual si ...Более

Статья 2020 Edebiyat Fakültesi Journal of Archaeological Science123 64 Просмотры
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The Dieudonne tau-complete spaces and free topological groups of uniform spaces

Asılbek ÇEKEEV

For a Tychonoff space X, the Dieudonne tau-completion of X, denoted by mu TX, is investigated. The space mu TX is defined as the completion of X with respect to the uniformity uTX, where uTX is generated by all continuous mappings of X to metric spaces of weight

Статья 2020 Fen Fakültesi Topology and its Applications281 ( Special Issue ) 76 Просмотры
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Escherichia coli O157 in fish: Prevalence, antimicrobial resistance, biofilm formation capacity, and molecular characterization

Ruslan ADİL AKAY TEGİN

This study was performed to survey the incidence of Escherichia coli O157:H7 contamination in fish samples which were obtained from different fish farms and retail markets. For this purpose, a total of 140 fish samples were analyzed according to ISO 16654 and screened for virulence genes by mPCR. Antibiotic susceptibility tests were performed with the disc diffusion method and isolates were genotyped by using Enterobacterial repetitive intergenic consensus (ERIC) PCR. Of the 140 analyzed sample, two (1.4? from the same farm, were found to be contaminated with E. coli O157 serogroup, one of whi ...Более

Статья 2020 Mühendislik Fakültesi LWT - Food Science and Technology133 92 Просмотры
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Chronological echocardiographic evaluation of left ventricular systolic and diastolic function in term and premature neonatal calves

İsmail ŞEN

Echocardiographic studies in human neonatology has demonstrated that prematurity can lead to cardiovascular dysfunction and especially compromises the left ventricular (LV) systolic and diastolic functions. As echocardiographic studies have not been performed on cardiovascular dysfunction in premature calves, we echocardiographically evaluated and compared the LV systolic and diastolic function in full-term and premature calves. We followed the hemodynamical changes of LV during first 3 days of life. Twenty premature calves and 10 healthy term calves were enrolled in the study. 2D, M-mode and ...Более

Статья 2020 Veteriner Fakültesi Theriogenology158 93 Просмотры
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