Results 91 to 100 of about 243,077 (307)
Biological activities of extracts of some plants which utilized in colds [PDF]
Exploration of Drug ScienceAim: In this study, antioxidant activities and antibacterial activities of acetone and chloroform extracts obtained from Rosa canina, Echinacea purpurea, Althaea officinalis and Glycyrrhiza glabra were explored. Methods: Disc diffusion method and minimum
Sinem Aydin
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Chloroform extraction of zinc-oxine complexes
BUNSEKI KAGAKU, 1969 オキシン-クロロホルム溶液(0.01～0.1M)と過塩素酸塩水溶液(イオン強度0.1)の間の亜鉛の分配挙動をZn-65をトレーサーとして20℃で調べた.pH6.5以下では,亜鉛の分配比はDzn=[ZnOx22HOx]0/([Zn2+]+[ZnOx+]+[ZnOx2])で表わされた.分配曲線から"curve fitting method"を用いて亜鉛-オキシン錯体の安定度定数log K1=8.85, log K2=8.25を得た.水相のpH6.5以下ではn-ブチルアミンを分配系に加えても分配曲線はほとんど変わらないが,pH6.5以上では再現性ある分配曲線を得るためにはn-ブチルアミンの添加が必要であった.アルカリ領域(pH10以上)では亜鉛の分配は基本的にDzn=[ZnOx2C4H9NH2]0 ...
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Effects of Molecular Designs and Double‐Network Morphologies for Bioadhesive Semiconductors
Advanced Functional Materials, EarlyView.This study establishes molecular‐to‐mesoscale design rules for bioadhesive semiconducting polymers (BASCs). It identifies how side‐chain length, double‐network formation, and film thickness modulate adhesion strength and electronic performance, providing insight into the rational design of intrinsically adhesive semiconductors for stable and efficient ...
Zhichang Liu +8 more
wiley +1 more source
Xanthones from Calophyllum inophyllum [PDF]
, 2017 Repeated separation and purification of fractions from the crude chloroform extract of Calophyllum inophyllum via column chromatography afforded five known xanthone caloxanthones A, B, C, macluraxanthone and pyranojacareubin.
Daud, Shaari +3 more
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Phenol/chloroform extraction of DNA from cyanobacteria v2 [PDF]
, 2018 Phenol/chloroform-based DNA extraction from cells pre-treated with RNase A, lysozyme, proteinase K, and SDS. The protocol was optimized for extracting DNA from Microcystis aeruginosa, but works well for other cyanobacteria.
Robbie Martin, Steven W. Wilhelm
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Advanced Functional Materials, EarlyView.ABSTRACT In this work, we introduce a trifluoromethoxy (OCF3) group as a pseudo‐halogen terminal group design for non‐fullerene acceptors, which combines strong inductive electron‐withdrawing ability with moderate resonance donation. The as‐synthesized BTP‐OCF3, when benchmarked against its methoxy analogue BTP‐OCH3, demonstrates narrowed bandgap ...
Chunliang Li +16 more
wiley +1 more source
Cumhuriyet Science JournalThe present study was aimed to determine the total phenolic amounts of the bioactive contents resulting from the extraction of Sargassum sp., Ulva sp. and Schizochytrium sp. with different solvents such as chloroform, acetone and methanol. Total phenolic
Mehmet Naz
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Journal of Agricultural and Marine Sciences, 2004 The effectiveness of mesquite plant, Prosopis juliflora (SW) D.C. (Family: Mimosaceae), seed extracts against rice weevil. Sitophilus oryzae (L), reared on wheat grains was investigated in the laboratory. The tested plant extracts of P.
N.H. AI-Moajel
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Molecular study of lipids in humic acids by sequential chemical degradation [PDF]
, 2009 Lipidy v půdě vykazují poměrně vysokou resistenci k biodegradaci, mohou proto tak zajistit informace o zdrojích organické hmoty a diagenetických procesech. Půdní organická hmota je vysoce heterogenní a vyskytují se v ní různé dynamické systémy.
Bachratá, Radka
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Advanced Functional Materials, EarlyView.Self‐assembled monolayers (SAMs) are promising hole‐transporting materials for organic photovoltaics (OPVs), but suffer from self‐aggregation and poor large‐area uniformity. We find that interfacial modification using nicotinic hydrazide can eliminate the residual SAM aggregates by forming energetically favorable complexes, yielding uniform SAM.
Seongwon Yoon +10 more
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