Yayın tarihi için Fakülteler listeleme
Toplam kayıt 6446, listelenen: 101-120
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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 ... -
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 ... -
Improvement of superconducting properties of MgB2 by changing the argon ambient pressure and sintering conditions
(Institute of Physics Publishing, 2009)We have investigated various characteristic properties depending on sintering conditions of MgB2 samples prepared by the standard solid state reaction method. It is inferred from experimental results that the crystallinity ... -
Age, growth, sexual maturity and food composition of Sciaena umbra in the south-eastern Black Sea, Turkey
(Wiley-Blackwell Publishing, 2009)Studied were the age, growth, maturity and food composition of the brown meager, Sciaena umbra, caught off Trabzon, south-eastern Black Sea (Turkey) in 2002-2003. A total of 329 individuals was collected by spear fishing ... -
Haptic's suitability to constructivist learning environment: aspects of teachers and teacher candidates
(Elsevier Science BV., 2009)Until today many technologies are used in constructivist learning environments. As for this study, it is tried to reveal haptic's suitability to constructivist education environments together with aspects of 6 teachers and ... -
Usability of testing apparatuses about renewable energy resources in constructivist class environment
(Elsevier Science BV., 2009)Students construct their own knowledge based on their experiences which take part in the basis of constructivism. For that reason, curriculums which are prepared according to constructivist approach should contain activities ... -
Intrathoracic pneumatosis cystoides intestinalis associated with Bochdalek hernia and lung hypoplasia
(Oxford Univercity Press, 2009)[No abstract available] -
Trace element content in marine algae species from the Black Sea, Turkey
(Springer, 2009)Trace element content of marine algae species collected from the Black Sea coasts were determined by atomic absorption spectroscopy after microwave digestion. Trace element content in marine algae species were 1.70-17.1 ... -
Variation of K X-ray fluorescence cross-sections of Cu, Y and Ba in Y Ba2Cu3O7-δ superconductor
(Elsevier, 2009)K X-ray fluorescence cross-sections of Cu, Y and Ba elements were measured in CuO, Y 2O3, BaCO3 compounds and Y Ba2Cu3O7-? superconductor samples (nonreacted agent, calcined and sintered states). A superconductor sample ... -
The Benthic exotic species of the Black Sea: Blood cockle (Anadara inaequivalvis, Bruguiere, 1789: Bivalve) and Rapa whelk (Rapana thomasiana, Crosse, 1861: Mollusc)
(2009)The Black Sea is in transition from a freshwater to a marine environment and has a very low biodiversity. Therefore, it appears to be particularly vulnerable and easy target for many exotic species. Anthropogenic introductions ... -
Phylogeny of neurergus crocatus and neurergus strauchii in Turkey based on morphological and molecular data
(2009)We described the phylogeny of the salamandrid genus Neurergus in Turkey using statistical analyses on morphometric characters and a molecular analysis based on 12S and 16S rRNA genes. Two different species, Neurergus ... -
Dynamic phase diagrams of a mixed spin-1 and spin-5/2 Ising system in an oscillating magnetic field
(2009)We study the nonequilibrium aspects of the kinetics of a mixed spin-1 and spin-5/2 Ising system, including the biquadratic nearest-neighbor pair interaction (K) and the crystal-field interaction (D), under the presence of ... -
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 ... -
Photosystem II functionality and antioxidant system changes during leaf rolling in post-stress emerging ctenanthe setosa exposed to drought
(2009)We studied the changes in antioxidant system and chlorophyll fluorescence parameters in post-stress emerging Ctenanthe setosa (Rosc.) Eichler (Marantaceae) plants (PSE plants) having reduced leaf area under drought stress ... -
Determination of the protonation constants of triazole derivatives in non-aqueous solvents
(2009)Different 17 triazole derivatives were titrated with tetrabutylammonium hydroxide in four non-aqueous solvents (isopropyl alcohol, rert-butyl alcohol, N,N-dimethylformamide and acetonitrile), using Potentiometric method. ... -
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 ... -
Capoeta mauricii n. sp., a new species of cyprinid fish from lake beyşehir, turkey: (Osteichthyes: Cyprinidae)
(Taylor & Francis, 2009)Capoeta mauricii n. sp. is described from the Lake Beyşehir drainage, in Central Anatolia, Turkey. It is distinguished from other Anatolian Capoeta by having the lips somewhat fleshy and lower lip with developed lateral ... -
Effects of sexual reproduction on growth and vegetative propagation in Arum Maculatum L. (Araceae): Insitu removal experiments
(2009)We investigated the effects of sexual reproduction on vegetative propagation and relative somatic cost in Arum maculatum L. (Araceae). Two groups were selected as control and experimental. The spadices of individuals in ... -
Morphological variation among atlantic horse mackerel, Trachurus trachurus populations from Turkish coastal waters
(2009)Morphological variation among Turkish populations of the Atlantic horse mackerel Trachurus trachurus (Carangidae) was examined for 150 specimens at five different sampling localities (Sea of Marmara (Istanbul and Canakkale), ... -
Usefullness of serum insulin-like growth factor (IGF-1) and insulin-like growth factor binding protein-3 (IGFBP-3) for colorectal cancer diagnosis
(2009)İnsülin benzeri büyüme faktörü-1 (IGF-1), etkisi insülin benzeri büyüme faktör bağlayıcı protein-3 (IGFBP-3) tarafından düzenlenen, potent bir mitojen ve antiapoptotik ajandır. IGFBP-3, IGF-1’i dolaşımda taşır, hedef ...
