Güncel Gönderiler: FEF, Biyoloji Bölümü Koleksiyonu
Toplam kayıt 594, listelenen: 321-340
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Physiological changes in them in post-stress emerging Ctenanthe setosa plants under drought conditions
(Maik Nauka-Interperiodica Publishing, 2008)The capability of Ctenanthe setosa (Rosc.) Eichler (Marantaceae), pre-exposed to severe drought stress, of adaptation to a new drought conditions was investigated. C. setosa unstressed plants were exposed to drought period ... -
Cloning, expression, purification and characterisation of a thermostable chitinase from Bacillus licheniformis A1
(University of Milan, 2008)The chitinase B gene (ch/B65) of Bacillus licheniformis A1 (BlicA1) isolated from Diyadin hotspring in Turkey was cloned and sequenced. The gene is 1779 bp long and encodes a protein 592 amino acids with a 35-amino acid ... -
Contribution to the knowledge of the syntaxonomy and ecology of macchie and forest vegetation in Paphlagonia, North Anatolia, Turkey
(Taylor & Francis, 2008)In this study, the vegetation of Boztepe Forest Protection Area (Unye/Ordu, Turkey), which is located at the middle part of Black Sea region, has been investigated from the phytosociological point of view. The vegetation ... -
Phenolic acid contents of kale (Brassica oleraceae L. var. acephala DC.) extracts and their antioxidant and antibacterial activities
(Elsevier, 2008)Nine phenolic acids were identified and quantified by HPLC-MS in leaves and 10 in seeds of kale (black cabbage). The free, ester (methanol-soluble), glycoside and ester-bound (methanol-insoluble) phenolic acid contents of ... -
Antimicrobial activity and essential oil compositions of two Ranunculus species from Turkey: R. constantinopolitanus and R. arvensis
(2008)The isolated essential oils of Ranunculus constantinopolitanus and Ranunculus arvensis were tested for antimicrobial activity against the bacteria E. coli, K. pneumoniae, P. aeruginosa, E. faecalis, S. aureus, B. cereus ... -
Chemical composition and antimicrobial activities of the essential oils of Viburnum opulus, Viburnum lantana and Viburnum orientala
(2008)The composition of the essential oils obtained from the air-dried Viburnum opulus and Viburnum lantana were analyzed by GC-MS. 40 and 53 Components were identified in the essential oils and the main component of these ... -
Foliar resorption of nutrients in selected sympatric tree species in gallery forest (black sea region)
(2008)Gallery forests in Central Black Sea Region are dominated by Platanus orientalis L. The studies were performed in four sites (Mert River, Adalar, Kurupelit and Taflan Regions) located in V-shaped river valleys and differing ... -
Synthesis and antimicrobial evaluation of novel di-triazoles and 4-arylidene amino 4,5 dihydro-1H-[1,2,4] triazole-5-one derivatives
(TUBİTAK, 2008)A series of novel di-[3(thiophen-2-yl-methyl)-4,5-dihydro-1H-[1,2,4] triazole-5-one-4yl]n-alkanes (2a-h) were obtained by the reaction of N'-1-ethoxy-2-thiophen-2-yl-ethylydene hydrazino carboxylic acid ethyl ester (1) and ... -
A comparative study on two closely relative Tulipa L. taxa from NE Anatolia
(Springer, 2008)This study presents observations on the anatomical, palynological and ecological features of Tulipa gumusanica Terzioğlu and its morphologically similar relative, T. armena Boiss. var. armena, in order to clarify their ... -
Microwave-assisted synthesis of 4′-azaflavones and their n-alkyl derivatives with biological activities
(Wiley, 2008)4?-Azaflavone (=2-(pyridin-4-yl)-4H-1-benzopyran-4-one; 4) and 3-[(pyridin-4-yl)methyl]-4?-azaflavone (5) were synthesized by a simple environmentally friendly microwave-assisted one-pot method through the cyclization of ... -
Anatomical and pollen characters in the Genus epilobium L. (Onagraceae) from Northeast Anatolia
(2008)Anatomical and palynological features of E. algidum Bieb., E. palustre L., E. ponticum Hausskn., E. confusum Hausskn., E. hirsutum L. and E. montanum L. collected from NE Anatolia were examined and evaluated by numerical ... -
Sulphur and some heavy metal contents in foliage of Corylus avellana and some roadside native plants in Ordu province, Turkey
(Ekoloji, 2009)The concentration of sulphur and some heavy metals the leaves of Corylus avellana, Alopecurus myosuroides, Helleborus orientalis, Glechoma hederacea, Calamintha nepeta and Urtica dioica were determined around the "polluted ... -
Chemical composition and antimicrobial activity of essential oils from Centaurea appendicigera and Centaurea helenioides
(Taylor & Francis LTD., 2009)The chemical components and antimicrobial activity of the essential oils from Centaurea appendicigera C. Koch and Centaurea helenioides Boiss, two different endemic members of the genus Centaurea L. (Asteraceae), were ... -
Class 1 and class 2 integrons and plasmid-mediated antibiotic resistance in coliforms isolated from ten rivers in northern Turkey
(2009)We aimed to determine the molecular mechanisms of antibiotic resistance in coliforms isolated from ten rivers in northern region of Turkey. A total of 183 isolates were tested for antimicrobial susceptibility by disk ... -
Synthesis, characterization and cyclization reactions of some new bisthiosemicarbazones
(Arkat, 2009)The reaction of trans-1, 4-dichloro-2-butene 1 with selected phenols affords (E)-1, 4-bis(aryloxy)-2-butenes 2a-d which are converted into bis-thiosemicarbazones 3a-h via the reactions with thiosemicarbazide and 4-methyl ... -
Synthesis of some new 1,2,4-triazoles, their Mannich and Schiff bases and evaluation of their antimicrobial activities
(Elsevier, 2009)4-Phenyl-5-pyridin-4-yl-4H-1,2,4-triazole-3-thiol (3) was obtained in basic media via the formation of 2-isonicotinoyl-N-phenylhydrazinecarbothioamide (2), and converted to some alkylated derivatives (4a,b) and Mannich ... -
Photochemistry of nitro-substituted (E)-2-azachalcones with theoretical calculations and biological activities
(Elsevier, 2009)Four new stereoselective dimerization products (4a-c, 5) of m- and p-nitro-substituted (E)-2-azachalcones (2 and 3) were synthesized and tested for antimicrobial and antioxidant activities. Compounds 1-3 showed very good ... -
Synthesis of some new 1,3,4-thiadiazol-2-ylmethyl-1,2,4-triazole derivatives and investigation of their antimicrobial activities
(Elsevier, 2009)4-Amino-2-[(5-arylamino-4,5-dihydro-1,3,4-thiadiazol-2-yl)methyl]-5-(4-methylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-ones (3a-c) were obtained in acidic media via the formation of 2-[(4-amino-3-aryl-5-oxo-4,5-dihydro-1H-1 ... -
Relationships between vegetation zonation and edaphic factors in a salt-marsh community (Black Sea coast)
(2009)The effects of pH, electrical conductivity (EC), soluble cations (Na +, K +, Ca 2+, Mg 2+), and soluble anions (HCO 3 -, Cl -, SO 4 2-) on vegetation zonation in a salt-marsh community (Black Sea coast) were investigated ... -
PCR based idendification and discrimination of Caranx rhonchus (Pisces, Carangidae) based on nuclear and mtDNA sequences
(2009)PCR based nuclear and mitochondrial DNA markers are used to clarify cases of misidentification of adult individuals of fish species with morphological similarities. This problem prevails in the case of false scad (Caranx ...
