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1,213 research outcomes, page 1 of 122
  • publication . Article . 2003
    Open Access Turkish
    Authors:
    AYTEMİR, Mutlu Dilsiz; EROL, Dilek Demir;
    Publisher: TÜBİTAK

    The synthesis of a range of 3-hydroxy-4-oxo-4H-pyran-2- carboxamide with antimicrobial activity is described. Amide derivatives of pyranone were synthesised using TBTU [2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate] as a coupling agent and NMM (N...

  • publication . Article . 2002
    Open Access Turkish
    Authors:
    ACAR, Nursel; KOÇAK, Özgül;
    Publisher: TÜBİTAK

    Systems formed by the pyrene derivatives 3-hydroxypyrene and 1-aminopyrene with pyridine were studied. The thermodynamic and kinetic parameters of the systems were calculated using the changes in the absorption and emission spectra which occur due to hydrogen bond or co...

  • publication . Article . 1998
    Open Access Turkish
    Authors:
    YILMAZ, Veysel T.; YAZICILAR, Turan K.; ÖLMEZ, Halis;
    Publisher: TÜBİTAK

    The crystal structure of dichlorodiaquabis-(p-dimethylaminobenzaldehyde)manganese(II), [MnCl2(OH2)2(C9H11NO)2], was determined from X-ray intensity data. The structure consists of the isolated molecules of the complex. The central Mn atom in the complex is coordinated b...

  • publication . Article . Other literature type . 2014
    Open Access Turkish
    Authors:
    Aamer Saeed; Shams-ul Mahmood; Ulrich Flörke;
    Persistent Identifiers
    Publisher: TÜBİTAK

    A small library of new azomethine derivatives of 3-aryl-2-thioxo-2,3-dihydroquinazolin-4(1H)-ones was synthesized. The key intermediates 2-thioxo-quinazolinones (3a--e), obtained in 2 steps from the corresponding anilines, were treated with methyl chloroacetate to affor...

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  • publication . Article . 2014
    Open Access Turkish
    Authors:
    Şennur Özçelik; Ahmet Gül;
    Persistent Identifiers
    Publisher: TÜBİTAK

    The recent advances in the synthesis of carborane and boronic ester-substituted tetrapyrroles (porphyrins, porphyrazines, and phthalocyanines) are reviewed together with their possible utilization as agents for photodynamic therapy (PDT) and boron neutron capture therap...

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  • publication . Article . 2004
    Open Access Turkish
    Authors:
    KERMAN, Kağan; ÖZKAN, Dilşat; KARA, Pınar; KARADENİZ, Hakan;
    Publisher: TÜBİTAK

    The electrochemical parameters for 7--dimethyl--amino--1,2-- benzophenoxazinium Meldola's Blue, (MDB) on binding to DNA at both a hanging mercury drop electrode (HMDE) and carbon paste electrode (CPE) are described. MDB, which interacts with immobilized calf th...

  • publication . Article . 2010
    Open Access Turkish
    Authors:
    Hasan Alacam; Bahattin Avci; Osman Şaliş; Ahmet Dilek; Ahmet Kozan; Cuma Mertoğlu; Mehmet Şahin; Ali Okuyucu;
    Publisher: TÜBİTAK

    The Calanoid copepod Eudiaptomus gracilis (G.O. Sars, 1863) is recorded from Turkish inland waters for the first time. Males and females of Eudiaptomus gracilis were consistently found during 6 sampling periods in the Yeşilırmak River. The species was collected from the...

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  • publication . Article . 2015
    Open Access Turkish
    Authors:
    Nader NOROOZI PESYAN; Davoud SOLEIMANI; Nima HOSSEINI JAZANI;
    Persistent Identifiers
    Publisher: TÜBİTAK

    A series of new tetrazolic azo dyes based on (thio)barbiturate and electron-rich aromatics were synthesized in excellent yield. The electron-donor and tetrazole ring moieties were linked by a $p$-phenylazo bridge and the structural characterizations were achieved by FT ...

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  • publication . Article . 2013
    Open Access Turkish
    Authors:
    BAHRAM, Morteza; PESYAN, Nader Noroozi; NASERI, Abdolhossein; TASBIHFOROSH, Masomeh;
    Persistent Identifiers
    Publisher: TÜBİTAK

    Although water level fluctuations and related environmental variations occurring within reservoirs have a considerable effect on the zooplankton community, studies on zooplankton dynamics of reservoirs are very limited. In the present study, we aimed to elucidate the di...

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  • publication . Article . 2006
    Open Access Turkish
    Authors:
    BHATTI, Naheed Kaukab; SUBHANI, M. Sadiq; KHAN, Ather Yaseen;
    Publisher: TÜBİTAK

    Experimental values of rate constants for the heterogeneous transfer of electrons to methyl viologen, diquat viologen, benzyl viologen and n-butyl viologen monocations were determined. The process was studied at the surface of a platinum disk in mixtures of water with d...

1,213 research outcomes, page 1 of 122