Results 31 to 40 of about 25,950 (266)

Synthesis and characterisation of biologically compatible TiO2 nanoparticles [PDF]

, 2011
Peer reviewedPublisher ...
Cheyne, Richard William, McLaughlin, Abbie, Smith, Timothy Andrew Davies, Trembleau, Laurent Alain Claude   +3 more
core   +2 more sources

Synthesis of 6,13-difluoropentacene

Beilstein Journal of Organic Chemistry, 2020
6,13-Difluoropentacene was synthesized from 1,4-difluorobenzene. Friedel–Crafts annulation of the latter with phthalic anhydride and subsequent reduction of the anthraquinone gave 1,4-difluoroanthracene.
Matthias W. Tripp, Ulrich Koert
doaj   +1 more source

Characteristics of the root exudate release system of typical plants in plateau lakeside wetland under phosphorus stress conditions

Open Chemistry, 2020
In this study, the root exudates of wetland plants, Pistia stratiotes, black algae, and Cyperus alternifolius, exposed to six phosphorus concentration gradients (0, 0.2, 1, 5, 10, and 20 mg/L) were characterized.
Duan Xu, Zhao Yang-yi, Zhang Jian-cong
doaj   +1 more source

Synthesis and characterization heterocyclic of compounds derived fromamino pyridine substituted

Tikrit Journal of Pure Science, 2023
In this study, heterocyclic derivatives of imidazole, pyrimidine, benzodiazepine, indole and benzimidazole were synthesized. These new compounds were formed through the condensation reaction between 2-aminopyridinederivative with4-phenylphenacyl bromide,
Shaima Ibrahim Chyad Al-khazraji, Khalid M. Mohammed Al-janabi   +1 more
doaj   +1 more source

Plasticizer degradation by marine bacterial isolates : a proteogenomic and metabolomic characterization [PDF]

, 2020
Many commercial plasticizers are toxic endocrine-disrupting chemicals that are added to plastics during manufacturing and may leach out once they reach the environment.
Bosch, Rafael, Christie-Oleza, Joseph Alexander, Gibson, Matthew I., Wright, Robyn J.   +3 more
core   +3 more sources

Chemical Characterization of Water-Soluble Organic Acids in Size-Segregated Particles at a Suburban Site in Saitama, Japan

Asian Journal of Atmospheric Environment, 2009
Saturated n-dicarboxylic acids (C2-C7, C9), unsaturated dicarboxylic acids (maleic, fumaric, phthalic acid), ketocarboxylic acids (pyruvic, glyoxylic acid), and dicarbonyls (glyoxal, methylglyoxal) were determined in size-segregated samples with a high ...
Linfa Bao , Kazuhiko Sakamoto
doaj   +1 more source

Identification of Chemical Composition and Metal Determination of Retama raetam (Forssk) Stem Constituents Using ICP-MS, GC-MS-MS, and DART-MS

Journal of Analytical Methods in Chemistry, 2021
This study aims to investigate the chemical constituents of the stem of Retama raetam growing in Saudi Arabia. The organic and inorganic composition of ethanol extract of R.
Wedad Al-Onazi, Amal M. Al-Mohaimeed, Musarat Amina, Maha F. El-Tohamy   +3 more
doaj   +1 more source

Anaerobic degradation process of phthalic acid esters

浙江大学学报. 农业与生命科学版, 2006
Ten phthalic acid esters (PAEs) were tested anaerobically to assess their potential for biogas production. Results showed that biogas production decreased with the increasing alkyl chain length of PAEs resulting in its increased half-life.
XIA Feng-yi, WU Dong-lei, ZHENG Ping, WANG Chuan-hua   +3 more
doaj   +1 more source

Effects of cinnamic acid and phthalic acid on photosynthetic characteristics of Pugionium Gaertn.

Xibei zhiwu xuebao
[Objective] In order to explore the effects of phenolic acid self-toxic substances on the growth and photosynthetic characteristics of Pugionium cornutum (L.) Gaertn.
NING Kezhen, YUAN Xuesong, YANG Zhongren, HUANG Xiume, HAO Lizhen, ZHANG Fenglan   +5 more
doaj   +1 more source

Process for lowering the dielectric constant of polyimides using diamic acid additives [PDF]

, 1990
Linear aromatic polyimides with low dielectric constants are produced by adding a diamic acid additive to the polyamic acid resin formed by the condensation of an aromatic dianhydride with an aromatic diamine. The resulting modified polyimide is a better
St.clair, Anne K., Stoakley, Diane M.
core   +1 more source