Başlık için Fen Edebiyat Fakültesi listeleme
Toplam kayıt 1413, listelenen: 1056-1075
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Radiometric mapping and radiation dose assessments in sediments from Savsat Black Lake, Turkey
(Springer, 2022)In this study, natural and artificial radioactivity concentrations in sediment samples taken from Savsat Black Lake located on the Nature Park in Artvin were determined using a high purity germanium detector. It was ... -
Radionuclide concentration in tea, cabbage, orange, kiwi and soil and lifetime cancer risk due to gamma radioactivity in Rize, Turkey
(Wiley, 2011)BACKGROUND: In this study, the activity concentrations of 232Th, 238U, 40K and 137Cs were measured in tea, cabbage, orange, kiwi and soil samples collected from different stations using gamma spectrometry with a high-purity ... -
Radionuclides and heavy metals concentrations in Turkish market tea
(Elsevier, 2011)Tea is one of the most popular beverages in the world. The Eastern Black Sea Region of Turkey is one of the main tea producers in Turkey and the fifth in the world. Thus, the chemical components in tea have received great ... -
Random process generated by the incomplete Gauss sums
(2015)In this paper we explore a random process generated by the incomplete Gauss sums and establish an analogue ofweak invariance principle forthese sums. We focusour attentionexclusively on ageneralizationofthe limit distribution ... -
Ranunculus trıchophyllus chaix : a new record for the flora of nahcevan and caucasia region
(Bangladesh Botanical Soc, 2016)Ranunculus trichophyllus Chaix (Ranunculaceae). is reported here for the first time for the Flora of Azerbaijan. the specimens were collected from the Batabat Sea in teritorie of Nahchivan Otonom Republic of Azerbaijan. -
Rapid and efficient microwave-assisted synthesis of some new triazol-3-one derivatives
(Wiley, 2013)A growing body of literature has shown the effectiveness of using microwaves in chemical reactions. The aim of this study is to demonstrate a rapid and highly efficient synthesis of some new triazol-3-ones via microwave ... -
Rapid and efficient synthesis of a new series of 2-aryl-5-fluoro-6(4-phenylpiperazin-1-yl)-1H-benzimidazoles using microwave heating
(Sage Publications Ltd, 2015)A new series of 2-aryl-5-fluoro-6-(4-phenylpiperazin-1-yl)-1H-benzimidazoles was synthesised from the reaction of 4-fluoro-5-(4-phenylpiperazin-1-yl) benzene-1,2-diamine and iminoester hydrochlorides. 4-Fluoro-5-(4-pheny ... -
Rapid synthesis and lipase inhibition activity of some new benzimidazole and perimidine derivatives
(Maik Nauka/Interperiodica/Springer, 2014)This study presents a synthesis of new series of some benzimidazole, bisbenzimidazole and perimidine derivatives via microwave technique, which, leads to the good product yields and short reaction times. the structure of ... -
A reactor antineutrino detector based on hexagonal scintillator bars
(Elsevier, 2020)This study presents a new concept of segmented antineutrino detector based on hexagonal plastic scintillator bars for detecting antineutrinos from a nuclear reactor core. the choice of hexagonal scintillator bars is original ... -
Recent advances on smart glycoconjugate vaccines in infections and cancer
(Wiley, 2021)Vaccination is one of the greatest achievements in biomedical research preventing death and morbidity in many infectious diseases through the induction of pathogen-specific humoral and cellular immune responses. Currently, ... -
Recent studies of nitrogen containing heterocyclic compounds as novel antiviral agents: A review
(Elsevier, 2021)N-heterocycles are important, not only because of their abundance, but above all because of their chemical, biological and technical significance. They play an important role in biological investigation such as anticancer, ... -
Recep Tayyip Erdoğan Üniversitesi öğrenci ve akademisyenleri ile Rize halkının karşılıklı algı ve beklentileri
(Recep Tayyip Erdoğan Üniversitesi, 2017)GİRİŞ Pek çok ülkede gerçekleştirilen araştırmalar, Üniversitelerin içinde konumlandıkları; sosyal, kültürel ve fiziksel ortamı paylaştıkları şehirlerle ilişkilerini ve bu ilişkilerin sonuçlarını konu almaktadır. Üniversiteler ... -
Recycling of an agricultural bio-waste as a novel cellulose aerogel: A green chemistry study
(Springer, 2020)Cellulose aerogel (CA) isolated from tea stem wastes (TSW) is a good fire retardant and heat insulator, environmentally friendly, thermally stable and highly porous material with a network structure. These outstanding ... -
Rediscovery of tragopogon dshimilensis (Asteraceae), endemic to Turkey
(Magnolia Press, 2017)Tragopogon dshimilensis K. Koch is endemic to Turkey. This neglected species had been known from the original collection and was not included in the Flora of Turkey. Recently it was recollected from its type locality (A8 ... -
Reduction in membrane phosphatidylglycerol content leads to daptomycin resistance in Bacillus subtilis
(2011)Daptomycin (DAP) is a cyclic lipopeptide that disrupts the functional integrity of the cell membranes of Gram-positive bacteria in a Ca 2+-dependent manner. Here we present genetic, genomic, and phenotypic analyses of an ... -
Reduction, Mannich reaction, and antimicrobial activity evaluation of some new 1,2,4-triazol-3-one derivatives
(TÜBİTAK, 2012)Ethyl[4-arylmethyleneamino-3-(4-metylphenyl)-5-oxo-4,5-dihydro-1H -1,2,4-triazole-1-yl]acetates (3a-e and 10a-d) were obtained starting from 4-amino-2,4-dihydro-3H -1,2,4-triazol-3-ones (1 and 9) in 2 steps. The treatment ... -
Regioselective syntheses of 2-oxopyridine carbonitrile derivatives and evaluation for antihyperglycemic and antioxidant potential
(Elsevier, 2023)A library of 2-oxopyridine carbonitriles 1-34 was synthesized by regioselective nucleophilic substitution reactions. In the first step, a one-pot multicomponent reaction yield pyridone intermediates. The resulting pyridone ... -
Regularized trace formula for higher order differential operators with unbounded coefficients
(Texas State Univ, 2016)In this work we obtain the regularized trace formula for an even-order differential operator with unbounded operator coefficient. -
The relations between antioxidant enzymes and chlorophyll fluorescence parameters in common bean cultivars differing in sensitivity to drought stress
(Springer, 2011)Effects of the antioxidant system and chlorophyll fluorescence on drought tolerance of four common bean (Phaseolus vulgaris L.) cultivars were studied. The cultivars were positioned in the order of a decrease in their ... -
The relationship between leaf rolling and ascorbate-glutathione cycle enzymes in apoplastic and symplastic areas of Ctenanthe setosa subjected to drought stress
(2009)The ascorbate-glutathione (ASC-GSH) cycle has an important role in defensive processes against oxidative damage generated by drought stress. In this study, the changes that take place in apoplastic and symplastic ASC-GSH ...
