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    Myxomycetes of Mezit stream valley of Turkey
    (Mycotaxon Ltd, 2005) Ergül, CC; Dülger, B; Akgül, H
    The myxomycete diversity of the Mezit valley and vicinity was assessed from 1999 to 2002 in the Southern Marmara region of the Bursa and Eskisehir provinces of Turkey. Of the 36 species and 12 genera listed, 22 represent new records for the valley and surroundings. The ecology of the valley is briefly discussed. A map of the study area and the checklist are available at the website http://biyoloji.uludag. edu.tr/ergul/Checklist-001.pdf.
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    Myxomycetes of the western Black Sea Region of Turkey
    (Mycotaxon Ltd, 2005) Ergül, CC; Dülger, B; Oran, RB; Akgül, H
    The distribution and abundance of myxomycetes in parts of the western Black Sea Region of Turkey during 2000-2002 are documented. Seventy-eight species belonging to 25 genera were recorded from field and moist chamber collections. Badhamia goniospora, B. papaveracea, B. populina, Cribraria confitsa, Dianema harveyi, Diderma niveum, Didymium sturgisii, Licea scyphoides, Macbrideola dubia, and Physarum globuliferum are new for Turkey.
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    Spectroscopic studies, antimicrobial activities and crystal structures of N-(2-hydroxy-3-methoxybenzalidene) 1-aminonaphthalene
    (Elsevier, 2005) Ünver, H; Yildiz, M; Dülger, B; Özgen, Ö; Kendi, E; Durlu, TN
    Schiff base N-(2-hydroxy-3-methoxybenzalidene)1-aminonaphthalene has been synthesized from the reaction of 2-hydroxy-3-methoxybenzaldehyde with 1-aminonaphthalene. The compound were characterized by elemental analysis, FT-IR, H-1 NMR, C-13 NMR and UV-visible techniques. The UV-visible spectra of the Schiff base were studied in polar and nonpolar solvents in acidic and basic media. The structure of the compound has been examined cyrstallographically. There are two independent molecules in the asymmetric unit. It crystallizes in the monoclinic space group P2(l)/c, with unit cell parameters: a=14,602(2), b=5,800(1), c= 16,899(1) Angstrom, V= 1394.4(2) Angstrom(3) D-x=1.321 g cm(-3) and Z = 4. The crystal structure was solved by direct methods and refined by full-matrix least squares to a find R = 0.041 of for 1179 observed reflections. The title compound's antimicrobial activities also have been studied. The antimicrobial activities of the ligand has been screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538, Klebsiella pneumoniae UC57, Micrococcus luteus La 2971, Proteus vulgaris ATCC 8427, Pseudomonas aeruginosa ATCC 27853, Mycobacterium smegmatis CCM 2067, Bacillus cereus ATCC 7064 and Listeria monocytogenes ATCC 15313, the yeast cultures Candida albicans ATCC 1023 1, Kluyveromyces fragilis NRRL 2415, Rhodotorula rubra DSM 70403, Debaryomyces hansenii DSM 70238 and Hanseniaspora guilliemodii DSM 3432. (C) 2004 Elsevier B.V. All rights reserved.
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    Synthesis and antimicrobial activity of bis(imido) Schiff bases derived from thiosemicarbazide with some 2-hydroxyaldehydes and metal complexes
    (Scientific Publ-India, 2004) Yildiz, M; Dülger, B; Koyuncu, SY; Yapici, BM
    Schiff bases have been synthesised by the reaction of salicylaldhyde, 5-bromosalicylaldehyde, 5-nitrosalicylaldehyde and naphthaldehyde with thiosemicarbazide. The ligands of N,N'-bis(salicylidene)thiosemicarbazide (1) react with Mn-II, Co-II, Ni-II, Cu-II, Zn-II and Hg-II metals to yield 1 : 1 metal-ligand complexes. The structures of ligands and complexes have been investigated by elemental analyses, magnetic susceptibility measurements, H-1 NMR, IR and UV-visible spectral data. The pentadentate nature of the ligands is inferred from IR spectra. The UV-visible spectral data suggest octahedral geometry for Mu(II), Co-II, Ni-II, Cu-II, square-pyramidal geometry for Zn-II and Hg-II The antimicrobial activities of the ligands and metals complexes have been screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538 P, Bacillus cereus ATCC 7064, Proteus vulgaris ATCC 8427, Salmonella typhimurium DSM 554, Corynebacterium xerosis ATCC 373 and Hanseniaspora guilliermondii DSM 3432, Rhodotorula rubra DSM 70403 and Kluyveromyces fragilis ATCC 8608. It is observed that the coordination of metal ions has pronounced effect on the microbial activities of the ligands. The metal complexes have higher antimicrobial effect than the free ligand.
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    Synthesis and characterization of new crown ethers of Schiff base type and their complexes
    (Indian Chemical Soc, 2005) Yildiz, M; Dülger, B; Çinar, A
    New crown ether ligands of Schiff base type (4-11) have been synthesised by the reaction of two equivalents, of benzaldehyde, 2-hydroxybenzaldehyde, 2,3-dihydroxybenzaldehyde, 5-methoxy-2-hydroxybenzaldehyde, 5-bromo-2-hydroxybenzaldehyde, 5-nitro-2-hydroxybenzaldehyde, 4-hydroxybenzaldehyde or 2-hydroxy-l-naphthaldehyde with 2,3,5,6-di[4-aminobenzo]-1,7,10,13-tetraoxacyclopentadeca-2,5-dien (3). The ligand 2,3,5,6 -di[4-N-(salicylidene)benzo]-1,7,10,13-tetraoxacyclopentadeca-2,5-dien (5) (5) reacts with Mn-II, Fe-II, Co-II, Ni-II, Cu-II and Zn-II to yield 1 : 1 metal-ligand complexes. The structures of ligands and complexes have been investigated by elemental analysis, IR, UV-visible, (1)(H) NMR and C-13 NMR data. The tetradentate nature of the ligands is inferred from IR spectra. The UV-visible spectral data suggest octahedral geometry for metal complexes. The antimicrobial activities and yeast cultures of the ligands and metal complexes have been screened in vitro against the organisms Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538 P, Bacillus cereus ATCC 7064, Proteus vulgaris ATCC 8427, Salmonella typhimurium DSM 554, Corynebacterium xerosis ATCC 373 and Hanseniaspora guilliermondii DSM 3432, Rhodotorula rubra DSM 70403 and Kluyveromyces fragilis ATCC 8608. The metal complexes are more fungitoxic than the free ligand.