Results 11 to 20 of about 2,882,964 (299)

Extractive Metallurgy and Chemistry

Crystals, 2023
In recent years, the proper management and recycling of metallurgical waste have become increasingly important due to their significant environmental impact and the potential for the recovery of valuable metals in order to save natural resources [...]
Dmitry Zinoveev, Pavel Grudinsky, Valery Dyubanov   +2 more
openaire   +2 more sources

Natural Deep Eutectic Solvents (NADESs) Combined with Sustainable Extraction Techniques: A Review of the Green Chemistry Approach in Food Analysis

Foods, 2022
Usual extraction processes for analyzing foods, supplements, and nutraceutical products involve massive amounts of organic solvents contributing to a negative impact on the environment and human health.
Ciro Cannavacciuolo, S. Pagliari, J. Frigerio, Chiara Maria Giustra, M. Labra, L. Campone   +5 more
semanticscholar   +1 more source

Extraction of organic chemistry grammar from unsupervised learning of chemical reactions

Science Advances, 2021
RXNmapper constructs coherent atom-mapping rules from raw chemical reactions using unsupervised training of neural networks. Humans use different domain languages to represent, explore, and communicate scientific concepts.
P. Schwaller, Benjamin Hoover, J. Reymond, H. Strobelt, T. Laino   +4 more
semanticscholar   +1 more source

Total synthesis of justicidin B, justicidin E, and taiwanin C: A general and flexible approach toward the synthesis of natural arylnaphthalene lactone lignans

Frontiers in Chemistry, 2022
Lignans are widely present in traditional medicinal plants. Many natural arylnaphthalene lactone lignans (NALLs) isolated from the genera Justicia, Haplophyllum, and Phyllanthus possess interesting biological activities.
Kai Wei, Kai Wei, Yucui Sun, Yiren Xu, Wen Hu, Ying Ma, Yi Lu, Wen Chen, Hongbin Zhang   +8 more
doaj   +1 more source

A novel method for extracting metals from asteroids using non-aqueous deep eutectic solvents

Scientific Reports, 2023
Extra-terrestrial mining and metal processing are vital for access to strategic metals for space exploration. This study demonstrates for the first time the catalytic dissolution of metals from meteorite proxies of metal-rich asteroids using a deep ...
Rodolfo Marin Rivera, Philip Bird, Gawen R. T. Jenkin, Andrew P. Abbott   +3 more
doaj   +1 more source

Diterpenoids inhibit ox-LDL-induced foam cell formation in RAW264.7 cells by promoting ABCA1 mediated cholesterol efflux

Frontiers in Pharmacology, 2023
Introduction: Atherosclerosis is the main cause of many cardiovascular diseases and contributes to morbidity and mortality worldwide. The formation of macrophage-derived foam cells plays a critical role in the early stage of atherosclerosis pathogenesis.
Cheng Zhang, Xuewen Wu, Pengmin Shi, Hongyu Ma, Fei Fang, Qianlang Feng, Shuang Zhao, Ruipu Zhang, Jinyuan Huang, Xinting Xu, Weilie Xiao, Guang Cao, Xu Ji   +12 more
doaj   +1 more source

Extraction of Chemical Structures from Literature and Patent Documents using Open Access Chemistry Toolkits: A Case Study with PFAS

Digital Discovery, 2022
The extraction of chemical information from documents is a demanding task in cheminformatics due to the variety of text and image-based representations of chemistry.
Shadrack J. Barnabas, Timo Böhme, Stephen K. Boyer, Matthias Irmer, Christoph Ruttkies, Ian Wetherbee, T. Kondić, Emma L. Schymanski, Lutz Weber   +8 more
semanticscholar   +1 more source

Guayule (Parthenium argentatum) resin: A review of chemistry, extraction techniques, and applications

Industrial crops and products (Print), 2021
Guayule (Parthenium argentatum Gray) is a perennial shrub of the Asteraceae family native to the arid southwestern U.S. and northern Mexico that produces high-quality, hypoallergenic natural rubber.
M. Dehghanizadeh, Paula Mendoza Moreno, Evan Sproul, H. Bayat, Jason C. Quinn, C. Brewer   +5 more
semanticscholar   +1 more source

Partial and Total Solvent-Free Limonene’s Hydrogenation: Metals, Supports, Pressure, and Water Effects

Journal of Chemistry, 2020
Bio-based solvents menthene and menthane were obtained through limonene’s partial and total hydrogenation under various catalytic conditions. Heterogeneous catalysts based on different active metals and supports (carbon, alumina, and silica) were ...
Fanta J. Ndongou Moutombi, Anne-Sylvie Fabiano-Tixier, Olivier Clarisse, Farid Chemat, Mohamed Touaibia   +4 more
doaj   +1 more source

Mesoporous Silica Modified with 2-Phenylimidazo[1,2-a] pyridine-3-carbaldehyde as an Effective Adsorbent for Cu(II) from Aqueous Solutions: A Combined Experimental and Theoretical Study

Molecules, 2022
In this study, we will present an efficient and selective adsorbent for the removal of Cu(II) ions from aqueous solutions. The silica-based adsorbent is functionalized by 2-phenylimidazo[1,2-a] pyridine-3-carbaldehyde (SiN-imd-py) and the ...
Rafik Saddik, Imad Hammoudan, Said Tighadouini, Othmane Roby, Smaail Radi, Maha I. Al-Zaben, Abir Ben Bacha, Vijay H. Masand, Zainab M. Almarhoon   +8 more
doaj   +1 more source