Results 31 to 40 of about 6,805 (187)

Effects of Exogenous Organic Acids on the Soil Metabolites and Microbial Communities of Panax notoginseng from the Forest Understory

Agronomy
Panax notoginseng (Sanqi) is a precious traditional Chinese medicine that is commonly cultivated using conventional management methods in agricultural systems in Yunnan, China, where it faces the challenge of continuous cropping obstacles (CCOs). However,
Jingying Hei, Yue Li, Qiong Wang, Shu Wang, Xiahong He   +4 more
doaj   +1 more source

Fe3O4@SiO2–SO3H Nanoparticles: An efficient magnetically retrievable catalyst for esterification reactions [PDF]

Journal of Particle Science and Technology, 2018
In this study, magnetite nanoparticles were obtained from Fe(II) and Fe(III) salts in an alkaline medium. The nanoparticles were then protected from oxidation by a silica shell formed by the sol-gel method using tetraethoxy orthosilicate (TEOS) in an ...
Zeynab Shahedi, Yagoub Mansoori
doaj   +1 more source

Synthesis and characterization of amphiphilic nitroxide 1,1,3,3–tetraethylisoindoline–2–oxyl–5–sodium sulfonate (TEIOSNa)

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The synthesis and characterization of an amphiphilic nitroxide to be used as a controlling agent in a nitroxide‐mediated living radical polymerization in aqueous dispersion media is presented. In the first stage of nitroxide synthesis (phthalimide protection), two reaction methods were employed: traditional and microwave.
Enrique García‐Leal, Martha Eugenia Albores Velasco, René O. Vargas, Rubén Mil‐Martínez   +3 more
wiley   +1 more source

Major biotransformation of phthalic acid esters in Eisenia fetida: Mechanistic insights and association with catalytic enzymes and intestinal symbionts

Environment International, 2023
Phthalic acid esters (PAEs) are an important group of organic pollutants that are widely used as plasticizers in the environment. The PAEs in soil organisms are likely to be biotransformed into a variety of metabolites, and the combined toxicity of PAEs ...
Xiuli Fan, Chenggang Gu, Zhihua Jin, Jun Cai, Yongrong Bian, Fang Wang, Hong Chen, Xin Jiang   +7 more
doaj   +1 more source

Circular and Bio‐Sourced Polymers for Energy Applications: Natural Feedstocks, Recycling, and Upcycling Routes

EcoEnergy, EarlyView.
This review provides a critical comparative analysis of circular and bio‐sourced polymers for energy storage, systematically evaluating natural feedstocks alongside recycling and upcycling strategies for battery components. Key structure–property–performance relationships and inherent trade‐offs between sustainability metrics and electrochemical ...
Priyank Sinha, Amul Jain, Koushik Mahata, Sanjib Banerjee   +3 more
wiley   +1 more source

Synthetic Derivatives of Natural Alkaloid Harmine

Eurasian Chemico-Technological Journal, 2009
The indole alkaloid harmine was extracted from underground part of Peganum harmala L. With the purpose of obtaining the new biological active derivatives on base of alkaloid harmine the chemical modification was carried out.
M. M. Ismagulova, Zh. S. Nurmaganbetov, A. Zh. Turmukhambetov, T. S. Seitembetov, S. M. Adekenov   +4 more
doaj   +1 more source

Molecularly Engineered Dual‐Crosslinked Polymer Dielectrics for 200 °C Capacitive Energy Storage

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work establishes a molecular engineering strategy that constructs a robust dual‐crosslinked network in polymer nanocomposites, achieving a record‐high energy density of 5.17 J cm−3 with >90% efficiency at 200 °C. The multiscale‐validated design simultaneously enhances dielectric polarization and introduces deep electron traps, resulting in ...
Xue Li, Ling Weng, Lizhu Guan, Xiaoming Wang, Ze Li, Xiaorui Zhang, Ruiqun Pan, Yuhan Li, Zijian Wu, Yingtang Zhang   +9 more
wiley   +1 more source

BIOLOGICAL ACTIVITY OF MONOSUBSTITUTED AMIDES OF PHTALIC ACIDS

Разработка и регистрация лекарственных средств, 2019
Anthelmintic, insecticidal, anticoagulant, hemostatic activities of monosubstituted amides of phthalic acid were investigated. Insecticidal, anthelmintic and antico-agulant activities for investigated monosubstituted amides of phthalic and ...
N. V. Kolotova, A. V. Starkova
doaj  

Optical properties in the UV and visible spectral region of organic acids relevant to tropospheric aerosols [PDF]

Atmospheric Chemistry and Physics, 2004
Refractive and absorption indices in the UV and visible region of selected aqueous organic acids relevant to tropospheric aerosols are reported. The acids investigated are the aliphatic dicarboxylic acids oxalic, malonic, tartronic, succinic and glutaric
C. E. Lund Myhre, C. J. Nielsen
doaj  

Lattice‐Strained Cu2O‐Ni/NiO Heterostructure Enables Selective Electrocatalytic C–C Coupling of Alcohols to Cinnamaldehyde in Aqueous Medium

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study achieved the selective oxidation C–C coupling of PhCH2OH with EtOH to form cinnamaldehyde (CAL) on a designed Cu2O‐Ni/NiO heterojunction catalyst. By employing a salt precipitation strategy to balance the pH and cation concentration, an 86% conversion rate of PhCH2OH and a 67% high selectivity for CAL were realized.
Tian Cheng, Kaizhi Gu, Jiani Liu, Yujing Liu, Jianlong Wei, Zhaoling Ma, Hengyue Xu, Jia Zhang, Hanwen Liu, Yiqiong Zhang, Shuangyin Wang   +10 more
wiley   +1 more source