Makale Koleksiyonu: Recent submissions

Now showing items 141-160 of 753

ESI-MS measurements for the equilibrium constants of copper(II)-insulin complexes

Gülfen, Mustafa; Özdemir, Abdil; Jung-Lee Lin; Chung-Hsuan Chen (ELSEVIER SCIENCE BV, 2018)

Trace elements regulate many biological reactions in the body. Copper(II) is known as one of trace elements and capable of binding to proteins. Insulin is a blood glucose-lowering peptide hormone and it is secreted by the ...
Tannic Acid-Reduced Graphene Oxide Deposited with Pt Nanoparticles for Switchable Bioelectronics and Biosensors Based on Direct Electrochemistry

Bilge Akkaya; Çakıroğlu, Bekir; Özacar, Mahmut (AMER CHEMICAL SOC, 2018)

In this study, we reported a novel biosensor based on direct electrochemistry of glucose oxidase (GOx) on a tannic acid-reduced graphene oxide nanocomposite modified glassy carbon electrode deposited with Pt nanoparticles. ...
Electro-Optics and Band Gap Energies of Nanosilver-Coated TiO2 Nanotubes on Titanium Metal

Olgun, Uğursoy; Gülfen, Mustafa; Üstel, Fatih; Hale Arslan (CHINESE ACAD SCIENCES, INST METAL RESEARCH, 2018)

TiO2 nanotubes on Ti metal surface were prepared by the electrochemical anodization method. Then, nanosilver was deposited onto the nanotubes by the electroless dip coating and the anodization. The obtained TiO2 nanotubes ...
Synthesis, Biological Activity and Structure-Activity Relationship of Novel Diphenylurea Derivatives Containing Tetrahydroquinoline as Carbonic Anhydrase I and II Inhibitors

Alparslan Atahan; Nahit Gencer; Cigdem Bilen; Emre Yavuz; Genç Bilgiçli, Hayriye; Sönmez, Fatih; Zengin, Mustafa; Mustafa Ceylan; Küçükislamoğlu, Mustafa (WILEY-V C H VERLAG GMBH, 2018)

A series of novel tetrahydroquinoline derivatives containing urea moiety was synthesized and their invitro inhibitory effects on the human carbonic anhydrase isoenzymes (hCA-I and hCA-II) were evaluated by using the CO2 ...
Peripherally tetra-benzimidazole units-substituted zinc(II) phthalocyanines: Synthesis, characterization and investigation of photophysical and photochemical properties

Pinar Sen; Goknur Yasa Atmaca; Ali Erdogmus; Sibel Demir Kanmazalp; Necmi Dege; Yıldız, Salih Zeki (ELSEVIER SCIENCE BV, 2018)

The context of this study is based on the synthesis of 4-(4-(1H-benzo[d] imidazole-2yl) phenoxy group substituted phthalocyanine (4) and 4-(4-(1-allyl-1H-benzo[d] imidazole-2yl) phenoxy group substituted phthalocyanine ...
Online Solid-Phase Extraction of Cd(II), Cu(II), and Co(II) Using Covalently Attached Bis(salicylaldimine) to Silica Gel for Determination in Food and Water by Flame Atomic Absorption Spectrometry

Sezen Sivrikaya; İmamoğlu, Mustafa (TAYLOR & FRANCIS INC, 2018)

In this study, a novel sorbent material bearing a bis(aldimine) group was designed and successfully synthesized by covalently bonding a 2-[N,N-bis(salicylaldimine)]aminoethyl amine ligand to the silica gel surface that was ...
An Efficient and Highly Stereoselective Synthesis of gala-Quercitol from 1,4-Cyclohexadiene

Baran, Arif (2003)
The effect of reduction of graphene oxide on the formation of hydroxyapatite and tricalcium phosphate

Türk, Serbülent; Altınsoy, İbrahim; Çelebi Efe, Gözde Fatma; İpek, Mediha; Özacar, Mahmut; Bindal, Cuma (PERGAMON-ELSEVIER SCIENCE LTD, 2018)

This study reports on biomimetic mineralization route employing reduced graphene oxide (RGO) at different rates as a template material for biomineralization of biphasic hydroxyapatite/tricalcium phosphate (HAP/TCP). ...
Comparative studies of photophysical and electrochemical properties of sulfur-containing substituted metal-free and metallophthalocyanines

Güzel, Emre; Serife Cetin; Günsel, Armağan; Bilgiçli, Ahmet Turgut; Şişman, İlkay; Yaraşır, Meryem Nilüfer (SPRINGER, 2018)

The synthesis, photophysical and electrochemical properties of soluble sulfur-containing 4-(methylthio) benzenethiol substituted, non-peripherally metal-free and metallo (Zn, Ga, Co, and Mn) phthalocyanine complexes (2-6) ...
Partial Purification and Characterization of Polyphenol Oxidase from the Wild Edible Mushroom Lepiota Procera Using Three-Phase Partitioning

Neslihan Saki; Mustafa Akin; Alıcı, Esma Hande; Arabacı, Gülnur (WALTER DE GRUYTER GMBH, 2018)

Polyphenol oxidase (PPO) from the wild edible mushroom Lepiota procera is partially purified and biochemically characterized using three-phase partitioning (TPP), which is an easily applied and effective method. This method ...
Synthesis, electrochemical/photophysical properties and computational investigation of 3,5-dialkyl BODIPY fluorophores

Derin, Yavuz; Rasit Fikret Yilmaz; Ibrahim Halil Baydilek; Vildan Enisoglu Atalay; Özdemir, Abdil; Tutar, Ahmet (ELSEVIER SCIENCE SA, 2018)

A series of 3,5 dimethyl and diethyl BODIPY with different substitutions at meso position are synthesized and characterized. Photophysical and electrochemical features of the 3,5 dialkyl BODIPY fluorophores are investigated ...
Novel thymol bearing oxypropanolamine derivatives as potent some metabolic enzyme inhibitors - Their antidiabetic, anticholinergic and antibacterial potentials

Zengin, Mustafa; Genç Bilgiçli, Hayriye; Parham Taslimi; Ali Kestane; Güçlü, Ertuğrul; Öğütlü, Aziz; Karabay, Oğuz; Ilhami Gulcin (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2018)

A series of classical and newly synthesized thymol bearing oxypropanolamine compounds were synthesized and characterized. Their in vitro antibacterial activity on A. baumannii, P. aeruginosa, E. coli and S. aureus strains ...
DNA-binding, enzyme inhibition, and photochemical properties of chalcone-containing metallophthalocyanine compounds

Furkan Ozen; Aslihan Gunel; Baran, Arif (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2018)

In this study, two novel phthalocyanine complexes were synthesized using their corresponding metal salts and 4-(4-(3-(2,4,5-trimethoxyphenyl)acryloyl)phenoxy)phthalo-nitrile as chalcone ligand (4), which was prepared from ...
Determination of Boron in hazelnut varieties with the addition of sorbitol by using ICP-OES and ultrasonic nebulization after microwave digestion system

Mustafa S. Dundar; Altundağ, Hüseyin; Gulsah Tunca (ACG PUBLICATIONS, 2018)

Boron is an essential nutrient for plants and an essential element for many organisms, but can be toxic to aquatic and terrestrial organisms above certain concentrations. The aim of this research is determining the Boron ...
Determination of some major and trace elements in the lower Sakarya River water by ICP-MS

Mustafa S. Dundar; Altundağ, Hüseyin (ACG PUBLICATIONS, 2018)

In this paper, water and sediment samples were collected along the Lower Sakarya River basin for a twelve month period between February 2007 and January 2008. The samples were analysed for trace elements (31 elements in ...
Lipase-based on starch material as a development matrix with magnetite cross-linked enzyme aggregates and its application

Atheer Awad Mehde; Wesen Adel Mehdi; Severgün, Olcay; Soner Cakar; Özacar, Mahmut (ELSEVIER SCIENCE BV, 2018)

The Fe3O4 magnetic nanoparticles were prepared by precipitating ferrous ion (Fe2+) and ferric ion (Fe3+) in alkaline solution. The Fe3O4 magnetic nanoparticles were modified by tannic acid. After functionalization process, ...
Biotransforrnation of testosterone by Ulocladium chartarum MRC 72584

Yıldırım, Kudret; Kuru, Ali; Sengul Yilmaz (SCIENCE REVIEWS 2000 LTD, 2018)

The incubation of testosterone 1 with Ulocladium chartarum MRC 72584 has been reported. U. chartarum MRC 72584 hydroxylated testosterone 1 at C-7 beta, C-6 beta, C-14 alpha and C-12 beta, accompanied by a 5 alpha-reduction ...
Stereoselective ring-opening reactions with AcBr and AcCl. A new method for preparation of some haloconduritols

Baran, Arif (2003)
An evaluation of coal fly ash as an adsorbent for the removal of methylene blue from aqueous solutions: kinetic and thermodynamic studies

Karaca, Hüseyin; Altıntığ, Esra; Devrim Turker; Teker, Murat (TAYLOR & FRANCIS INC, 2018)

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Microbial transformation of some steroids by Cladosporium cladosporioides MRC 70282

Yıldırım, Kudret; Kuru, Ali; Rasit Fikret Yilmaz (SCIENCE REVIEWS 2000 LTD, 2018)

Incubation of testosterone, androstenedione and progesterone with Cladosporium cladosporioides MRC 70282 for 5 days is reported. Testosterone was hydroxylated at C-16 beta and then oxidised at C-16. This was accompanied ...