Results 11 to 20 of about 6,745 (141)

Synthesis of polyamids from some of the medical drugs after the Insertion of 1,3,4-thiadiazole ring in their composition

open access: yesTikrit Journal of Pure Science, 2023
This search include preparation of polyamids Containing some of the medical drugs, by the polycondensathion method for amino-1,3,4-thiadiazole compounds with dicarboxylic acids (terephthalic acid and phthalic acid) in presence of triphenyl phosphite and
Malath Khalaf Rasheed   +1 more
doaj   +1 more source

Synthesis and evaluation of antimicrobial activity of cyclic imides derived from phthalic and succinic anhydrides

open access: yesResearch in Pharmaceutical Sciences, 2017
Cyclic imides are a group of compounds which have valuable biological properties including cytotoxic, anti-inflammatory, antibacterial and antifungal activities. In this study, succinic and phthalic anhydrides were treated with glycinamide in pyridine to
Elham Jafari   +5 more
doaj   +1 more source

Composition of semi-volatile organic compounds in the urban atmosphere of Singapore: influence of biomass burning [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
An intensive field study was conducted in the urban atmosphere of Singapore to investigate the composition of organic compounds in both gaseous and particulate phases during the period of August to early November 2006.
J. He, B. Zielinska, R. Balasubramanian
doaj   +1 more source

Determination of Volatility Parameters of Secondary Organic Aerosol Components via Thermal Analysis

open access: yesAtmosphere, 2022
To date, there are limited data on the thermal properties of secondary organic aerosol (SOA) components. In this study, we employed an experimental method to evaluate the physical properties of some atmospherically relevant compounds.
Fawad Ashraf   +5 more
doaj   +1 more source

Interacting blends of Styrenated unsaturated poly (ester–amide)s with commercial unsaturated polyester resin (o-phthalic anhydride based)

open access: yesJournal of Saudi Chemical Society, 2014
Unsaturated poly (ester–amide)s resins (UPEAs) were prepared by the reaction between an epoxy resin, namely diglycidyl ether of bisphenol-A (DGEBA) and unsaturated aliphatic bisamic acids (B1–4) using a base catalyst.
Nirmit N. Patel, Hasmukh S. Patel
doaj   +1 more source

Copper Complexes of Nicotinic-Aromatic Carboxylic Acids as Superoxide Dismutase Mimetics

open access: yesMolecules, 2008
Nicotinic acid (also known as vitamin B3) is a dietary element essential for physiological and antihyperlipidemic functions. This study reports the synthesis of novel mixed ligand complexes of copper with nicotinic and other select carboxylic acids ...
Virapong Prachayasittikul   +5 more
doaj   +1 more source

The effect of long-term moderate exercise on myocardial metabolome in rats

open access: yesChinese Journal of Physiology, 2023
Regular moderate physical exercise is beneficial for the cardiovascular system. Our prior study has demonstrated a long-term moderate exercise (4-week of 60-min 74.0% V̇O2max treadmill running) is optimal in protecting from exhaustive exercise-induced ...
Zheng Ping   +3 more
doaj   +1 more source

Effects of Preferential Incorporation of Carboxylic Acids on the Crystal Growth and Physicochemical Properties of Aragonite

open access: yesCrystals, 2020
The preferential incorporation of carboxylic acids into aragonite and its effects on the crystal growth and physicochemical properties of aragonite were systematically investigated using a seeded co-precipitation system with different carboxylic acids ...
Seon Yong Lee   +3 more
doaj   +1 more source

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

open access: yesOpen 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

ISOTHERM ADSORPTION STUDY OF THE SOME DICARBOXYLIC ACID BY MANGANESE DIOXIDE [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2014
The adsorption process for Aliphatic and Aromatic dicarboxylic acid on manganese dioxide was studied briefly as a polluted material which produced in nature.
KHALEL I. AL-NIEMI   +2 more
doaj   +1 more source

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