Ara
Toplam kayıt 77, listelenen: 21-30
Antioxidant activities, metal contents, total phenolics and flavonoids of seven Morchella species
(Pergamon-Elsevier Science Ltd, 2009)
Seven Morchella species were analyzed for their antioxidant activities in different test systems namely beta-carotene/linoleic acid, DPPH, reducing power, chelating effect and scavenging effect (%) on the stable ABTS(center ...
Antioxidant and anticholinesterase constituents of Salvia poculata
(Scientific Technical Research Council Turkey-Tubitak, 2009)
Two triterpenoids, namely 2 alpha,3 alpha-dihydroxy-24-nor-4(23), 12-oleanadien-28-oic acid (1) and ursolic acid (2); 4. avonoids, namely 5-hydroxy-7,4'-dimethoxyflavone (3), cirsimaritin (4), eupatilin (5), and salvigenin ...
Gold nanoparticle synthesis and characterisation
(2009)
The aim of this study is to synthesize and characterize gold nanoparticles. For this purpose, the reduction reaction between tetrachloroauric acid and sodium citrate was used. At the end of the reduction reaction, gold ...
Synthesis and investigation extraction properties of 4- methylacetophenone, 4-chloroacetophenone and isonitrosoacetephenone 4-aminobenzoylhydrazones
(2004)
Bu çalışmada, 4-aminobenzoik asit hidrazinin 4-metilasetofenon, 4-kloroasetofenon ve isonitrosoasetofenon ile reaksiyonundan sırasıyla 4-metilasetofenon 4-aminobenzoil hidrazon $(L_1)$, 4-kloroasetofenon 4-aminobenzoil ...
Carrier free cross-linked peroxidase aggregates: synthesis and characterization
(2008)
In this study, cross-linked Horseradish Peroxidase (HRP) aggregates were prepared. Bovin Serum Albumin (BSA), a proteic feeder, and glutaraldehyde, a bifunctional reactive, a crosslinker agent has also been used. The initial ...
Photopolymerized poly(Ethylene glycol) diacrylate hydrogels for controlled release of ketoprofen
(2009)
In this study, poly(ethylene glycol-diacrylate) (PEG-DA) hydrogels with two different concentrations, 30% and 50% w/w, were prepared by free radical polymerization method. Ethylene glycol dimethacrylate (EGDMA) and ...
The Effects of Science Teaching Through Team Game Tournament Technique on Success Level and Affective Characteristics of Students
(2008)
The purpose of this study is to investigate the effects of teaching a unit & #8220; Reproduction and Growth in Living Things& #8221; from the science curriculum of 8th graders by using Team Game Tournament (TGT) ...
Chelating agent effect on the release of gentamicin from PEG-DA hydrogels
(2008)
In this study, controlled drug release devices of poly(ethylene glycol-diacrylate) (PEG-DA) hydrogels were prepared by free radical UV polymerization. PEG-DAmacromere was cross-linked with different percentages of ethylene ...
Urease immobilized piezoelectric quartz crystal for urea conversion
(2008)
In this study, the immobilization of the enzyme urease on the surface of the quartz crystal was reported. The layer growth on silver electrode resonator was monitored with QCM and the catalytic activity of the enzyme layer ...
Quartz crystal piezo electrode surface modification for gold nano-particles immobilization
(2007)
In this study silver electrode quartz crystal surfaces were cleaned and modified to immobilize gold nanoparticles. First, the crystal surfaces were cleaned and activated with sodium hydroxide, acetone and methanol. After ...