Results 71 to 80 of about 1,020,429 (254)

A critical review of resource recovery from municipal wastewater treatment plants : market supply potentials, technologies and bottlenecks [PDF]

open access: yes, 2020
In recent decades, academia has elaborated a wide range of technological solutions to recover water, energy, fertiliser and other products from municipal wastewater treatment plants.
Dewulf, Jo   +5 more
core   +1 more source

The potential chemo preventive effect of ursolic acid isolated from Paulownia tomentosa, against N-diethylnitrosamine: initiated and promoted hepatocarcinogenesis

open access: yesHeliyon, 2019
The present study discusses the isolation of ursolic acid from the chloroform extract of Paulownia tomentosa (Thunb) Steud fruits and its cytotoxic effect has been assessed in-vitro was performed in different cells lines (A-549, MCF-7, HepG2) and in-vivo
Sanaa A. Ali   +4 more
doaj   +1 more source

Photochemistry of N-(selenoalkyl)-phthalimides. Formation of N, Se-heterocyclic systems [PDF]

open access: yes, 2015
A variety of N-(selenomethyl)alkyl-phthalimides (alkyl = -(CH2)n-; n = 2-5, 1a, b, d, e) and N-(selenobenzyl)propyl phthalimide (1c) were synthesized and their photochemistry was studied at λ = 300 nm.
Argüello, Juan Elias   +3 more
core   +1 more source

New anthrarobin acyl derivatives as butyrylcholinesterase inhibitors: synthesis, in vitro and in silico studies

open access: yesHeliyon, 2017
To treat Alzheimer's disease (AD), the available candidates are effective only against mild AD or have side effects. So, a study was planned to synthesis new candidates that may have good potential to treat AD.
Mehreen Lateef   +10 more
doaj   +1 more source

Conversations with chemists: information seeking behavior of chemistry faculty in the electronic age. [PDF]

open access: yes, 2002
This manuscript is a final draft of the article as submitted to the Haworth journal Science and Technology Libraries in December 2002. Due to editorial error, Haworth published an earlier draft of this paper instead of the final draft.
Flaxbart, David
core   +1 more source

Structure determination of a 4-pyrone from the liverwort Plagiochila bifaria (Sw.) Lindenb. (Plagiochilaceae) [PDF]

open access: yes, 2008
The centenary of the presentation in 1907 of the "polyketide" hypothesis by Collie, along with his use of a 4-pyrone as an example, is marked by reporting the discovery and isolation of 2-(3,4-dimethoxyphenethyl)-6-methyl-4-pyrone from <i> ...
Rycroft, D.S.
core  

Chemical investigation of a biologically active schinus molle L. leaf extract [PDF]

open access: yes, 2019
The pepper tree Schinus molle L. is an evergreen ornamental plant belonging to the Anacardiaceae family, native to South America and widespread throughout the world. It has biological activities and is used in folk medicine. This paper aims to contribute
Garzoli, S.   +5 more
core   +1 more source

Foeniculum vulgare Essential Oils: Chemical Composition, Antioxidant and Antimicrobial Activities [PDF]

open access: yes, 2010
The essential oils from Foeniculum vulgare commercial aerial parts and fruits were isolated by hydrodistillation, with different distillation times (30 min, I h, 2 h and 3 h), and analyzed by GC and GC-MS. The antioxidant ability was estimated using four
Barroso, J. G.   +6 more
core  

CHEMISTRY OF NATURAL PRODUCTS

open access: yes
Natural products have always captivated the imagination of scientists, researchers, andenthusiasts alike. They are the Earth's rich reservoir of chemical diversity, offering a vast arrayof compounds with fascinating structures and often remarkable biological activities.
Mrs Sandhya Kota   +3 more
openaire   +1 more source

Synthesis and properties of lipoamino acid/fatty acid mixtures. Influence of the amphiphilic structure. [PDF]

open access: yes, 2009
The acylation of amino acids by acid chlorides with from 8 to 12 carbon atoms, in alkaline aqueous medium following Shotten-Baumann reaction, results in sodium salts of Nα-acylamino acids and fatty acids mixture. These lastest are present in proportion
Alric, Isabelle   +4 more
core   +2 more sources

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