Güncel Gönderiler: Fen Fakültesi
Toplam kayıt 1146, listelenen: 461-480
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Life strategies in epiphytic bryophyte communities of the southwest Anatolian Liquidambar orientalis forests
(Gebruder Borntraeger, 1998)Based on 30 additional releves, the syntaxonomical position, the species composition and the distribution of the epiphytic Scorpiurio sendtneri-Zygodontetum vulgaris of the southwest Anatolian Liquidambar orientalis alluvial ... -
Studingon metabolic and antimicrobial activities of some L-plantarum strains isolated from sausages
(Scientific Technical Research Council Turkey-Tubitak, 1999)In this research, a total of 97 Lactobacillus were isolated from 10 different sausage and sosis samples obtained from different markets. Identification results showed that 39 (41.1%) isolates belong to the species L. ... -
Solvent extraction of Fe3+ cation by 25,26,27,28-tetraisonitrosoaceto calix[4]arene and based ligands
(Marcel Dekker Inc, 1999)25,26,27,28-Tetraisonitrosoaceto calix[4]arene [L-8] was synthesized by reacting 25,26,27,28-tetraacetyl calix[4]arene [L-7] with n-butyl nitrite. The synthesized compounds [L-7, L-8] and based ligands (p-tert-butyl phenol ... -
The identification and quantitative analysis of the very toxic 2,3,7,8-tetrachlordibenzo-P-dioxin in the presence of polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) contaminated soil samples
(Marcel Dekker Inc, 1999)This research decribes the nature and extent of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) contamination in the soil samples from a waste cable incineration plant. The samples are collected at different places in ... -
Antimicrobial effects of bis(Delta(2)-2-imidazolinyl)-5,5 '-dioxime and its mono- and tri-nuclear complexes
(Kluwer Academic Publ, 2000)Bis(Delta(2)-2-imidazolinyl)-5,5'-dioxime (H2L) and its nickel, cobalt, zinc, cadmium and mercury complexes have been prepared and tested in vitro against different microorganisms in order to assess their antimicrobial ... -
Synthesis of a novel heterocyclic dioxime and its mononuclear complexes with Ni(II), Co(II), Cu(II), Zn(II), Cd(II) and Hg(II)
(Marcel Dekker Inc, 1999)In this work, a novel heterocyclic dioxime (2,3-hydroximino-4-phenyl-6-phenlyazo-1-thia-4,5-diazacyclohexa-5-diene, H2L) was synthesized by reacting dithizone with cyanogen di-N-oxide. H2L forms mononuclear complexes ... -
Concentrations of trace elements in wild edible mushrooms
(Elsevier Sci Ltd, 2001)The concentrations of Cu, Cd, Co, Ni, Mn, Pb, Zn and Fe in 66 samples of mushroom fruiting bodies, representing seven species, mainly all edible, were determined by atomic absorption spectrophotometry. The mushrooms were ... -
Heavy metal contents in some macrofungi collected in the northwestern part of Turkey
(Springer-Verlag, 2001)Eight metal contents were determined in wild growing macrofungi collected from two different areas in Balikesir and Akhisar (NW Turkey). The analysis has been done by atomic absorption spectrophotometry in 179 samples of ... -
Reflective light modulator based on epsilon-GaSe crystal
(Optical Soc Amer, 2002)We report the results of investigating a low-voltage, polarization-insensitive, reflective-type modulator based on an epsilon -GaSe crystal and operated at the 1.960-eV line of a He-Ne laser. We demonstrate that the ... -
Interdependence of absorber composition and recombination mechanism in Cu(In,Ga)(Se,S)(2) heterojunction solar cells
(Amer Inst Physics, 2002)Temperature-dependent current-voltage measurements are used to determine the dominant recombination path in thin-film heterojunction solar cells based on a variety of Cu(In,Ga)(Se,S)(2) alloys. The activation energy of ... -
Synthesis and characterization. of complexes of Ni(II), Co(II), and Cu(II) with four 4-aminobenzoate derivatives of unsymmetrical vic-dioximes
(Taylor & Francis Inc, 2002)Four different 4-aminobenzoate derivates of vic-dioximes Were synthesized. Their transition metal complexes with Ni(II), Co(II) and Cu(II) were prepared with a metal-ligand ratio of 1:2. The unsymmetrical complexes are in ... -
Development of Random Amplified Polymorphic DNA (RAPD) markers in 150 F-6-inbred durum wheat (Triticum durum) lines derived from Kunduru-1149 x Cham-1 cross
(Laser Pages Publ Ltd, 2003)Random Amplified Polymorphic DNA (RAPD) markers were developed in a specific durum wheat population (150 lines) derived from Kunduru-1149 x Chain-1 cross. Of 284 RAPD primers screened against parent DNAs, 83 revealed at ... -
Chemical composition and antifungal properties of essential oils of three Pistacia species
(Elsevier Science Bv, 2003)The chemical composition of essential oils obtained from the leaves of Pistacia vera, Pistacia terebinthus, Pistacia lentiscus and the resin of Pistacia lentiscus were analyzed by GC and GG-MS. alpha-Pinene, beta-pinene, ... -
Raman scattering under pressure and the phase transition in epsilon-GaSe
(Wiley-V C H Verlag Gmbh, 2003)Raman scattering in epsilon-GaSe has been investigated at room temperature in a diamond anvil cell by using helium gas as a pressure transmitting medium. The first observation of the solid-solid phase transition under ... -
Antifungal activities of the leaves of three Pistacia species grown in Turkey
(Elsevier Science Bv, 2003)The crude extracts obtained from the leaves of Pistacia vera, Pistacia terebinthus and Pistacia lentiscus were tested for antifungal activities against three pathogenic agricultural fungi, Phythium ultimum, Rhizoctania ... -
Occurrence of resistance to antibiotics, metals, and plasmids in clinical strains of Staphylococcus spp
(Elsevier Science Inc, 2003)Background. Presence of staphylococci resistant to antibiotics is of concern, as is the possible spread of resistance determinants among Staphylococcus species. During the past several years, a series of staphylococcal ... -
Isolation and characterization of antioxidant phenolic compounds from the aerial parts of Hypericum hyssopifolium L. by activity-guided fractionation
(Elsevier Sci Ireland Ltd, 2003)Dried methanol extract of Hypericum hyssopifolium subsp. elongatum var. elongatum was dissolved in distilled water, and then fractioned by re-extracting with petroleum ether, chloroform, and ethyl acetate, subsequently. ... -
Heavy metal biosorption by biomass of Ochrobactrum anthropi producing exopolysaccharide in activated sludge
(Elsevier Sci Ltd, 2003)The removal of chromium, cadmium and copper, toxic metals of high environmental priority due to their toxicity, from dilute aqueous solutions has been studied in the present work, applying a dead exopolysaccharide producing ... -
Phytosociological investigations of Pinus pinea L., forests in the North-East Anatolia region (Trabzon and Artvin - Turkey)
(Pakistan Botanical Soc, 2003)In this study phytosociological structure of Pinus pinea L., forests that occurs in Trabzon and Artvin provinces in the East-Black Sea region in Turkey has been investigated. From the phytogeographical view point, it is ... -
A new host and two new genera for the fungal flora of Turkey
(C S I R O Publishing, 2004)Cronartium quercuum causing leaf rust of Quercus coccifera and Trimmatostroma betulinum on Salix alba are recorded for the first time in Turkey. These represent the first records of the genera Cronartium and Trimmatostroma ...
