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Cobalt(II), Copper(II), Nickel(II), and Zinc(II) Complexes of Naphthaldehyde Thiazolyl Hydrazones

100%

Yilmaz I. , Çukurovali A.

Polish Journal of Chemistry

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2004

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tom Vol. 78 / nr 5

663-672

EN

Two new Schiff base ligands containing 2,4-disubstituted thiazoles and cyclobutane rings, 2-hydroxy-1-naphthaldehyde [4-(3-methyl-3-mesitylcyclobutyl)-1,3-thiazol- 2-yl] hydrazone (L1H) and 1-(2-hydroxy-1-naphthyl)etanone [4-(3-methyl-3-mesitylcyclobutyl)- 1,3-thiazol-2-yl] hydrazone (L2H) and their mononuclear complexes with a 1:2 metal:ligand ratio have been prepared from chloride salts of Co(II), Cu(II), Ni(II) and Zn(II) in EtOH. The authenticity of new ligands and their complexes have been established by elemental analyses, infrared, 1H and 13CNMRspectra, and by magnetic susceptibility measurements. Thermal properties of the ligands and complexes have been studied by thermogravimetric analysis (TGA) technique. The novel complexes of transition metal ions contain two monoanionic, bidentate NO ligands. It was found that all the complexes are mononuclear.

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Coordination Chemistry of Nickel(II), Copper(II), and Cobalt(II) with MN4 Core-Containing Two Novel vic-Dioximes Ligands. Synthesis, Spectroscopy and Redox Properties

80%

Kilic A. , Tas E. , Gumgum B. , Yilmaz I.

Polish Journal of Chemistry

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2006

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tom Vol. 80, nr 12

1967-1981

EN

Two new vic-dioxime, N-(4-amino-1-benzyl piperidine)-anti-phenylglyoxime (L1H2) and N-(4-amino-1-benzyl piperidine)-anti-glyoxime (L2H2) were prepared by the reaction of anti-phenylchloroglyoxime and anti-monochloroglyoxime with 4-amino- 1-benzyl piperidine in absolute THF at –15°C. Mononuclear nickel(II), copper(II), and cobalt(II) complexes have a metal-ligand ratio of 1:2 in which the ligands coordinate through the two nitrogen atoms as do most vic-dioximes. The ligands and their Co(II), Cu(II), and Ni(II) complexes were characterized by elemental analyses, FT-IR, UV-vis, 1H-NMR and 13C-NMR, magnetic susceptibility measurements, electrical conductivity measurements and cyclic voltammetry. The electrical conductivity of Ni(II), Co(II), and Cu(II) metal complexes were measured using Four-Point Probe analysis. The electrochemical behavior of theNi(II), Co(II), andCu(II) complexeswere investigated by cyclic voltammetry in DMSO.

3

The effects of sewage sludge and nitrogen applications on grain sorghum grown [Sorghum vulgare L.] in Van-Turkey

80%

Akdeniz H. , Yilmaz I. , Bozkurt M. A. , Keskin B.

Polish Journal of Environmental Studies

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2006

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tom 15

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nr 1

EN

The research was conducted in Van, located in the eastern Anatolia region of Turkey. The purpose of this research was to assess environmental hazards to crops and soils from sludge-borne heavy metal; and the potential of using sludge as an alternative to commercial fertilizer, yield, N content and uptake of grain sorghum (Sorghum vulgare L. A-298). Sorghum plants were grown on sandy clay soils under irrigated conditions. Three levels of biosolids were topically applied at rates of 7, 14 and 21 Mg ha⁻¹; and two level of nitrogen were also applied at rates of 40 and 80 kg ha⁻¹. The experimental design was a randomized complete block with four replications. Biosolids increased yields of dry matter and grain, plant length, N content of leaves, total N uptake and harvest index (HI). Grain yield was significantly correlated with plant length, N content of leaf and wholeplant, and total nitrogen uptake. Nitrogen harvest index (NHI) did not show significant correlation with any considered parameter other than harvest index. In contrast, nitrogen use efficiency (NUE) had a negative relationship with dry matter (DM) yield, N content of whole-plant, N content of grain and total N uptake. Diethylenetriamine pentaacetic acid (DTPA) extractable Cd, Pb and especially soil Zn concentrations increased with sewage sludge rates. In general, none of the heavy metals studied in both leaves and seed of crop reached either phytotoxic or toxic levels for humans or livestock [1]. The results showed that sewage sludge could be used as N fertilizer in grain sorghum production.

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Phytochemical profiles of wild grown blackberry and mulberry in Turkey

70%

Akin M. , Eyduran S. P. , Ercisli S. , Yilmaz I. , Cakir O.

Acta Scientiarum Polonorum. Hortorum Cultus

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2016

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tom 15

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nr 1

EN

Blackberry and mulberry are main berry crops grown in Black Sea region mostly in humid shade forest areas and its important for local people’s diet and also important for the maintenance of their health and prevention of disease. Present study aimed to determine the content of vitamin C, organic acids (citric acid, tartaric acid, oxalic acid, malic acid, succinic acid, fumaric acid), sugars (glucose and fructose) and phenolic compounds (catechin, rutin, quercetin, chlorogenic acid, ferulic acid, o-coumaric acid, p-coumaric acid, caffeic acid, syringic acid, vanillic acid, and gallic acid), as well as antioxidant capacity (Trolox Equivalent Antioxi-dant Capacity, TEAC assay) in the wild grown blackberry and mulberry fruit. Among phenolic acids, chlorogenic acid was the predominant for all wild grown blackberries, white and black mulberries. The presence of oxalic acid was only detected in the wild blackberry genotype. As a result, the phytochemical recognition of the wild grown blackberry, black and white mulberries might contribute to forthcoming investigations for developing the efficiency of food industry.

PL

Czarna jagoda i morwa należą do głównych owoców jagodowych uprawia-nych w rejonie Morza Czarnego w wilgotnych cienistych obszarach. Są one też ważne w diecie lokalnych mieszkańców, dla utrzymania zdrowia oraz zapobiegania chorobom. Celem niniejszego badania jest określenie zawartości witaminy C, kwasów organicznych (cytrynowego, winowego, szczawiowego, jabłkowego, bursztynowego, fumarowego), cukrów (glukozy i fruktozy), związków fenolowych (katechiny, rutyny, kwercetyny, kwasów: chlorogenowego, ferulowego, o-kumarowego, p-kumarowego, kawowego, syryngowego, wanilinowego i galusowego), a także pojemności antyoksydacyjnej (pojemnośćprzeciwutleniająca wyrażona w równoważnikach, test TEAC) w owocach dziko rosnącej czarnej jagody i morwy. Dominującym kwasem wśród kwasów fenolowych dla wszystkich uprawianych czarnych jagód oraz białej i czarnej morwy był kwas chlorogenowy. Obecność kwasu szczawiowego była wykryta tylko w genotypie dzikiej czarnej jagody. Fitochemiczna analiza dziko rosnącej czarnej jagody oraz czarnej i białej morwy może zatem przyczynić się do kolejnych badań zmierzających do zwiększenia wydajności przemysłu spożywczego.