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Found: 56 Piece 0.000 sn
Publication year : 2016 ✕Collection : Technical, Science a ... ✕
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Technical, Science and Applied SciencesKyrgyz-Turkish Manas University Institutional Collection
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Selective extraction of cobalt ions through polymer inclusion membrane containing Aliquat 336 as a carrier

Osman TUTKUN

This study reports the selective separation of Co (II) from mixtures of cobalt and nickel solutions using cellulose tri-acetate (CTA)-based polymer inclusion membranes, which incorporated the commercial extractant trioctylmethylammonium chloride (Aliquat 336). Tributylphosphate (TBP) was used as a modifier, and 2- nitro phenyl pentyl ether (2-NPPE) was applied as the plasticiser to prepare the membranes. Several important transport parameters such as the plasticiser concentration, carrier type, carrier concentration, pH of acid, stirring speed, stripping solution type and concentration, comple ...More

Article 2016 Mühendislik Fakültesi Desalination and Water Treatment57 ( 10 ) 68 Views
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Cyber crime risk awareness in Kyrgyz Republic

Rita İSMAİLOVA | Gülşat MUHAMETJANOVA

In this paper we present the information security awareness rate of students in Kyrgyz Republic, where there is a rapid pace of formation and development of the information society. The survey was conducted with a sample of 172 students from different departments of the university. Our research study showed that despite the huge number of reports about computer crimes in the web, the knowledge about cybercrime is quite low and students are mostly not aware of many aspects of computer crime. Analysis was done to determine dependence of information security awareness rate on computer literacy ra ...More

Article 2016 Mühendislik Fakültesi Information Security Journal: A Global Perspective 116 Views
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Assessment of Cd-induced genotoxic damage in Urtica pilulifera L. using RAPD-PCR analysis

İlhan DOĞAN

Plants can be used as biological indicators in assessing the damage done by bioaccumulation of heavy metals and their negative impact on the environment. In the present research, Roman nettle (Urtica pilulifera L.) was employed as a bioindicator for cadmium (Cd) pollution. The comparisons between unexposed and exposed plant samples revealed inhibition of the root growth (∼25.96% and ∼45.92% after treatment with 100 and 200 µmol/L Cd concentrations, respectively), reduction in the total soluble protein quantities (∼53.92% and ∼66.29% after treatment with 100 and 200 µmol/L Cd concentrations, re ...More

Article 2016 Fen Fakültesi Biotechnology and Biotechnological Equipment30 ( 2 ) 108 Views
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Screening of damage induced by lead (Pb) in rye (Secale cereale L.) – a genetic and physiological approach

İlhan DOĞAN

The fields in which lead (Pb) finds application in the modern world have increased dramatically in recent years. As a consequence of this intensive utilization of Pb, its toxicity tends to pose more and more environmental problems. The aim of this study was to evaluate the genotoxic potential of Pb and to characterize some physiological parameters in Secale cereale under Pb stress. Plants were subjected to different exposure levels of Pb (0, 100, 200 and 400 µmol/L) for two weeks. At the end of the experimental period, the effects of Pb exposure on the photosynthetic pigments content (chloroph ...More

Article 2016 Fen Fakültesi Biotechnology and Biotechnological Equipment30 ( 3 ) 55 Views
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Carbonaceous Materials-12: a Novel Highly Sensitive Graphene Oxide-Based Carbon Electrode: Preparation, Characterization, and Heavy Metal Analysis in Food Samples

Ali Osman SOLAK

Graphene oxide (GO) was covalently attached to glassy carbon (GC) electrode (GC–O–GO) for fabricating nanosensors to determine trace Pb2+ and Cd2+ using differential pulse anodic stripping voltammetry (DPASV). Surface characterization of the nanofilm-covered electrode was performed via electrochemical cyclic voltammetry (CV), transmission electron microscopy (TEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS) techniques. Surface pKa of the GO covalent attached GC (GC–O–GO) was calculated via CV. Under optimal conditions, a linear response was found for Pb2+ and Cd2 ...More

Article 2016 Mühendislik Fakültesi Food Analytical Methods9 ( 2 ) 59 Views
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3,8-Diaminobenzo[c]Cinnoline Derivatived Graphene Oxide Modified Graphene Oxide Sensor for the Voltammetric Determination of Cd2+ and Pb2+

Ali Osman SOLAK

Highly sensitive 3,8-diaminobenzo[c]cinnoline (3,8-DABCC) modified graphene oxide (GO) electrode was prepared, and it was denoted as pGO-DABCC. The electrode material was characterized with infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). pGO-DABCC on glassy carbon (GC/pGO-DABCC) electrode was investigated for simultaneous determination of Cd2+ and Pb2+ in aqueous media by differential pulse anodic stripping voltammetry (DPASV). Optimum conditions of the electrode were determined with some parameters ...More

Article 2016 Mühendislik Fakültesi Electrocatalysis7 ( 3 ) 56 Views
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Analysis of EST-SSRs in silver birch (Betula pendula Roth.)

İlhan DOĞAN

Simple sequence repeats (SSRs) defined as sequence repeat units between 1 and 6 bp occur abundantly in both coding and non-coding regions in eukaryotic genomes and these repeats can affect gene expression. In this study, ESTs (expressed sequence tags) of Betula pendula (silver birch) were analyzed for in silico mining of EST-SSRs, protein annotation, open reading frames (ORFs), designing primers, and identifying codon repetitions. In B. pendula, the frequency of ESTs containing SSRs was 7.8 % with an average of 1SSR/4. 78 kb of EST sequences. A total of 188 SSRs was identified by using MISA so ...More

Article 2016 Fen Fakültesi Journal of Forestry Research27 ( 3 ) 76 Views
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Determination of amino acid profile of mare milk produced in highlands of the Kyrgyz Republic during the milking season

Ayçürök MACİTOVA | Asılbek KULMIRZAYEV

This study was carried out to determine the influence of milking season on amino acid (AA) profile and chemical composition of milk samples from Kyrgyz native breed mares under traditional pasture conditions. Milk samples were collected monthly from May to August 2014 from mares grazing at 2,200 m above sea level. The AA composition was determined by precolumn derivatization with diethyl ethoxymethylenemalonate in HPLC and 18 AA were determined in mare milk. The analytical parameters of linearity (0.01–4 μg/mL), precision of the method (0.26–4.88% relative standard deviation), derivatization p ...More

Article 2016 Mühendislik Fakültesi Journal of Dairy Science99 ( 4 ) 109 Views
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Uniformities for Wallman compactifications and realcompactifications

Asılbek ÇEKEEV

The natural methods of uniform topology for construction of Wallman compactifications and Wallman realcompactifications are developed. Results on partial order and relations of dimensions in the lattice of compactifications are presented. The construction of the maximal compactification among compactifications of X with fixed realcompactification is given. - MSC 54E15; 54D35; 54D60; 54F45 . - Keywords: Uniformity; (Wallman, β-like) compactification; (Wallman) realcompactification; Normal base; Dimension

Proceedings Paper 2016 Fen Fakültesi Topology and its Applications201 90 Views
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Rumen ciliate protozoa of domestic sheep (Ovis aries) and goat (Capra aegagrus hircus) in Kyrgyzstan

Nurbek ALDAYAROV

Species composition and concentration of rumen ciliate protozoa were investigated in the rumen contents of 14 domestic sheep and 1 goat living in Bishkek, Kyrgyzstan. This is the first report on rumen ciliates from ruminants living in Kyrgyzstan. In sheep 12 genera, 28 species and 12 morphotypes were detected, whereas in goat 8 genera, 12 species and 4 morphotypes were detected. The density of ciliates in sheep was (28.1 ± 20.0) × 104 cells mL−1 and in goat was 37.0 × 104 cells mL−1. Dasytricha ruminantium, Isotricha prostoma, Entodinium simulans and Ophryoscolex caudatus were major species (1 ...More

Article 2016 Fen Fakültesi FEMS Microbiology Letters363 ( 6 ) 73 Views
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Modified Dincer and Dost Method for Predicting the Mass Transfer Coefficients in Solids

Coşkan ILICALI

The analytical model developed by Dincer and Dost [3] for the estimation of diffusivities and mass transfer coefficients has been reviewed, and the equations used for the evaluation of the mass transfer coefficients have been corrected. The corrected equations have been used for the calculation of mass transfer coefficients from literature data. It was observed that the corrected diffusivities showed significant differences from the previously calculated values. The use of the modified equations in future drying calculations will lead to more realistic mass transfer coefficient values. - Keyw ...More

Article 2016 Mühendislik Fakültesi International Journal of Food Engineering12 ( 1 ) 61 Views
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Outbreak of sheeppox in farmed sheep in Kyrgystan: Histological, eletron microscopical and molecular characterization

Nurbek ALDAYAROV | Zarima CUMAKANOVA | Askarbek TÜLÖBAEV

On a farm in the Kyrgyz Republic, several dead sheep were found without any history of illness. The sheep showed several ulcerations on lips and bare-skinned areas. At necropsy the lungs showed multiple firm nodules, which were defined as pox nodules histologically. In the rumen hyperkeratotic plaques were visible. With electron microscopy pox viral particles were detected and confirmed with qPCR as Capripoxviruses. Although all members of the Capripoxvirus genus are eradicated in western countries, this study should remind us of the classical lesions observed in poxvirus infections. Keywords: ...More

Article 2016 Fen Fakültesi Schweizer Archiv für Tierheilkunde158 ( 7 ) 99 Views
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