Güncel Gönderiler: Fen Edebiyat Fakültesi
Toplam kayıt 1429, listelenen: 501-520
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Monitoring of five different ınsecticide resistance status in Turkish house fly musca domestical. (Diptera: Muscidae) populations and the relationship between resistance and ınsecticide usage profile
(2012)Amaç: Bu çalışmanın amacı Türkiyenin altı ilinden getirilen karasinek soylarında direnç durumunun ve yıllık değişiminin saptanmasıdır. Yöntemler: Karasineklerin (Musca domestica L. Diptera: Muscidae) alan soyları 2004 ve ... -
Distribution of coronary artery risk factors: a regional analysis
(2011)Amaç: Bu çalışmadaki amacımız, Rize ili ve civarında koroner arter risk faktörlerinin sıklık ve dağılımını incelemektir. Yöntem ve gereç: Bu gözlemsel çalışmaya, 452 hasta (333 erkek, 119 kadın) alındı. Hastaların demografi ... -
Ab initio atomistic thermodynamics modeling of adsorption of oxygen on gold and gold-silver surfaces
(2019)A theoretical study of oxygen adsorption on gold and gold-silver surfaces by means of density functional theory (DFT) calculations with an atomistic thermodynamic model is performed. The (111) and (211) facets of gold and ... -
A conspectus of Scorzonera s.l. in Turkey
(2015)A comprehensive taxonomic study based on comparative morphology of Scorzonera , here maintained in its wide sense, is presented for the territory of Turkey. Tis study has produced several changes of classifcation at sectional ... -
An efficient synthesis of some new bisbenzimidazoles via microwave technique
(2014)2,2’-[1,4 (1,3)-Phenylenedi(methylene)]bis-1 H -benzimidazole derivatives were obtained from the reaction of 1,4- or (1,3)-bisiminoester hydrochloride and o -phenylenediamine derivatives under microwave irradiation. Ester ... -
Magnetic properties of spin- Blume-Capel chain under a magnetic field
(Elsevier Ltd, 2021)A magnetic property of the one dimensional spin-7/2 Blume-Capel model under the magnetic field has been investigated by means of transfer matrix method. Thermodynamic response functions are also obtained for varying values ... -
Dynamic interactions of Trichoderma harzianum TS 143 from an old mining site in Turkey for potent metal(oid)s phytoextraction and bioenergy crop farming
(Elsevier B.V., 2021)Despite high pollution risk, the termination of mining practices is not in question in the current era in line with the growing needs of beings. Instead, the rehabilitation by phytoremediation restores the economic and ... -
Radioactivity levels and radiation health hazards in medicinal plants used in Rize Province, Turkey
(Taylor and Francis Ltd., 2020)Natural and artificial radionuclide concentrations were determined and evaluated in 12 different medicinal plants used in Rize Province of Turkey. The levels of 226Ra, 232Th, 40K and 137Cs were specified in medicinal plants ... -
The effect of polymer capping group to the electrocatalytic water oxidation activities of prussian blue analogues
(Turkish Chemical Society, 2020)Prussian Blue (PB) nanoparticles can be obtained by reacting the hexacyanometal center with metal ions in the existence of polymers such as polyethyleneglycol (PEG). In this study, a pentacyanometal complex, [Fe(CN)5NO]2-, ... -
Efficient synthesis of 2-[(3,4-dichlorophenyl)methyl]-1h-benzimidazole derivatives, and their α-glucosidase inhibitory and antioxidant activities
(Bentham Science Publishers, 2020)In this work, some new 2-[(3,4-dichlorophenyl)methyl]-1H-benzimidazole derivatives containing different five-membered heterocycles like 1,3,4-oxadiazole, 1,3,4-triazole, and 1,3,4-thiadiazole moieties were designed and ... -
Age, growth and survival rate in two populations of Darevskia derjugini (Nikolsky, 1898) from different altitudes (Squamata: Sauria: Lacertidae)
(Brill Academic Publishers, 2020)We investigated age structure, age at sexual maturity, lifespan, growth and survival rate and adult life expectancy (as demographic life-history traits) as well as body size of two Darevskia derjugini (Artvin lizard) ... -
Tritium concentrations and consequent doses in bottled natural and mineral waters sold in Turkey and Azerbaijan
(Elsevier Ltd, 2021)In this study, tritium levels in commercially sold bottled natural and mineral waters in Turkey and Azerbaijan were determined. Tritium measurements were performed using Liquid Scintillation Counter (PerkinElmer TriCarb ... -
On the 30th anniversary of the Chernobyl Nuclear Power Plant Accident, assessment of the activity concentrations and the radiological hazard parameters of soil samples collected from Rize province and districts
(Elsevier Ltd, 2021)Uranium, thorium and potassium are the main terrestrial sources of radiation that are located at different levels in the soil depending on the geographical and geological conditions and contribute to increase of the natural ... -
Heteroligand bivalent transition metal complexes with an azo-oxime ligand and 1,10-phenanthroline: Synthesis, spectroscopy, thermal analysis, DFT calculations and SOD-mimetic activities
(Elsevier B.V., 2021)Novel mononuclear heteroligand transition metal complexes: [M(HL)(phen)2]ClO4, (M: Mn(II) for 1, Ni(II) for 2), [M(HL)(phen)(ClO4)], (Ni(II) for 3, Cu(II) for 4, Zn(II) for 5) with 2-[(E)-(hydroxyimino)methyl]-4-[(E)-phe ... -
Assessing pollution levels and health effects of heavy metals in sediments around Cayeli copper mine area, Rize, Turkey
(Bellwether Publishing, Ltd., 2021)Heavy metal concentrations of Mn, Cr, Fe, Ni, Cu, Zn, Cd and Pb in sediment samples collected from 12 stations in the Black Sea coast, Buyukdere and Sabuncular streams around Cayeli copper mine area in Rize, Turkey were ... -
On some properties of generalized convex combination of triangular norms
(Springer Verlag, 2019)In this paper, we define linear and generalized convex combination of triangular norms on bounded lattice. We investigate its some algebraic properties like unit element and zero-divisor element by putting some conditions. ... -
New locality records for eirenis occidentalis (Rajabizadeh, Nagy, Adriaens, Avcı, Masroor, Schmidtler, Nazarov, Esmaeili & Christiaens, 2015) and Eirenis punctatolineatus (Boettger, 1892) (Squamata: Colubridae) from eastern Anatolia (Turkey)
(Universitatea din Oradea, 2019)Here, we report new localities for Eirenis occidentalis and Eirenis punctatolineatus from the eastern Anatolia during a field survey in 2017, and present a summary of a morphological comparison between our specimens and ... -
Mapping the distribution of amphibian species in Rize province, Turkey
(Societas Europaea Herpetologica, 2019)The Caucasus biodiversity hotspot covering the northeastern part of Turkey is one of the richest regions in terms of global biodiversity. Rize Province is located in the Transcaucasia region portion of this hotspot. We ... -
Contribution to the phylogeny of Caucasian Nonea (Boraginaceae) inferred from nrDNA ITS and trnL-F data
(Magnolia Press, 2019)Nonea (Boraginaceae) with nearly 35 species was divided into four sections based on the shape of mericarpids and the position of the anthers in the corolla tube. Although several comprehensive taxonomic studies have been ... -
A new green protocol for the synthesis of 2-substituted perimidines from hydrazones under catalyst- and solvent-free conditions
(Bulgarian Academy of Sciences, 2018)A new green protocol was developed for the synthesis of 2-substituted perimidines. The protocol involves a reaction of ethoxy carbonylhydrazone with 1,8-diaminonaphthalene under solvent- and catalyst-free conditions. Simple ...
