نتایج جستجو برای: biogenic synthesis
تعداد نتایج: 416360 فیلتر نتایج به سال:
Zinc oxide is a safe material for humans, with high biocompatibility and negligible cytotoxicity. Interestingly, it shows exceptional antimicrobial activity against bacteria, viruses, fungi, etc., especially when reduced to the nanometer size. As easily understandable, thanks its properties, at forefront of antimicrobials in this pandemic era. Besides, view 2022 European Green Deal announced by...
Resveratrol is a naturally occurring anticancer compound present in grapes and wine with antiproliferative properties against breast cancer cells and xenografts. Our objective was to investigate the metabolic alterations that characterize the effects of resveratrol in the human breast cancer cell lines MCF-7 and MDA-MB-231 using high-throughput liquid chromatography-based mass spectrometry. In ...
Measurements of submicron aerosol chemical composition were made over the central Arctic Ocean from 5 August to 8 September 2008 as a part of the Arctic Summer Cloud Ocean Study (ASCOS) using an aerosol mass spectrometer (AMS). The median levels of sulphate and organics for the entire study were 0.051 and 0.055 μgm−3, respectively. Positive matrix factorisation was performed on the entire mass ...
The oxidation of biogenic volatile organic compounds (BVOCs) gives a range of products, from semivolatile to extremely low-volatility compounds. To treat the interaction of these secondary organic vapours with the particle phase, global aerosol microphysics models generally use either a thermodynamic partitioning approach (assuming instant equilibrium between semi-volatile oxidation products an...
Abstract The cost and difficulty in the preparation of synthetic heterogeneous base catalysts is main barrier to their use. Today, majority these are derived from biomass resources. This study aimed at developing characterizing three biogenic residues for biodiesel production without catalyst support. EDS indicated variation Na, K, Mg, Ca, having aggregates 67.45, 83.15, 76.85 % calcined‐ periw...
The effects of s.c. administered salmon calcitonin on the biogenic amine neurotransmitters and metabolites were studied in discrete brain sections in order to evaluate the relationships between these central effects and the fall of serum calcium and to investigate the mechanisms of calcitonin-induced behavioral changes. The biogenic amines and metabolites were simultaneously determined by high-...
The aim of this study was to evaluate the influence of an extremely low frequency sinusoidal magnetic field (ELF MF) with frequency of 10 Hz and intensity of 1.8-3.8 mT on the levels of the biogenic amines dopamine (DA), 3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA), 3-methoxytyramine (3-MT), 5-hydroxytryptamine (5-HT), 5-hydroxyindolacetic acid (5-HIAA), and noradrenaline (NA...
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