Results 91 to 100 of about 157,527 (353)

Chemical Feedstock Recovery through Plastic Pyrolysis: Challenges and Perspectives toward a Circular Economy

ChemSusChem, Accepted Article.
Plastics are indispensable in daily life, with both production and waste generation increasing annually. As the world strives for net‐zero emissions, advancing plastic recycling technologies has become a global priority. Pyrolytic liquefaction is a promising approach for recovering chemical feedstocks, including fuel fractions, from waste plastics ...
Shogo Kumagai, Kazuki Fujiwara, Toru Nishiyama, Yuko Saito, Toshiaki Yoshioka   +4 more
wiley   +1 more source

Annual Banned‐Substance Review 17th Edition—Analytical Approaches in Human Sports Drug Testing 2023/2024

Drug Testing and Analysis, EarlyView.
Scenarios of drug exposure and administration as well as detection assays for drugs and methods of sports doping published between 2023 and 2024 are critically reviewed and evaluated in context with the Prohibited List 2024 as established by the World Anti‐Doping Agency.
Mario  Thevis, Tiia  Kuuranne, Hans  Geyer   +2 more
wiley   +1 more source

Experimental and modeling studies on microwave-assisted extraction of mangiferin from Curcuma amada [PDF]

, 2013
Mangiferin, a bioactive compound having potent nutraceutical, strong antioxidant and pharmacological significance has been extracted using microwave-assisted extraction (MAE) technique from Curcuma amada, commonly known as mango ginger.
Chaudhuri, Surabhi, Constales, Denis, Dutta, Abhishek, Dutta, Debjani, Kullu, Jeke   +4 more
core   +1 more source

Optimised production and extraction of astaxanthin from the yeast Xanthophyllomyces dendrorhous [PDF]

, 2020
Currently, astaxanthin demand is fulfilled by chemical synthesis using petroleum-based feedstocks. As such, alternative pathways of natural astaxanthin production attracts much research interest.
Charalampopoulos, Dimitris, Chatzifragkou, Afroditi, de Andrade Lima, Micael, Harith, Zuharlida Tuan   +3 more
core   +1 more source

2‐Formyl‐5‐(hydroxymethyl)furan (HMF) Derivatives as Active Complexing Agent for CO2 Insertion Reaction

European Journal of Organic Chemistry, EarlyView.
Renewable‐based furanics derived from 5‐HMF are used to synthesize cyclic organic carbonates (COCs) via CO2 insertion into epoxides. The BHTHF/NaBr complexing system shows high activity, achieving 94–99% epoxide conversion and 70–99% COC selectivity under mild conditions.
Nicola Bragato, Mattia Annatelli, Alessandro Bernardi, Marco Bortoluzzi, Roberto Calmanti, Alvise Perosa, Maurizio Selva, Giulia Fiorani   +7 more
wiley   +1 more source

Occurrence and fate of organic contaminants in wastes [PDF]

, 2000
This thesis deals with the determination of organic contaminants in wastes and is part of the multidisciplinary faculty programme 'Biological waste in circulation between urban and rural areas - biology and flow of energy and material' which started at ...
Nilsson, Marie-Louise
core  

Dynamical and thermodynamic crossovers in the supercritical region of a holographic superfluid model [PDF]

Eur. Phys. J. C 85, 464 (2025)
Many physical systems, including classical fluids, present in their phase diagram the competition between two phases that are separated by a line of first-order phase transitions which terminates at a so-called critical point. Despite several proposals, in the supercritical region beyond the critical point, whether the two phases can still be ...
arxiv   +1 more source

Enantioselective Anion‐Binding‐Catalyzed Nucleophilic Addition to 4‐Quinolones

European Journal of Organic Chemistry, EarlyView.
The first organocatalytic enantioselective formal 1,4‐addition to 4‐quinolones has been developed. This method relies on chiral triazole‐based anion‐binding catalysis using enol nucleophiles, complementing previous metal catalytic approaches. Moderate to good yields and enantioselectivities were achieved by in situ silylation and formation of a key ...
Martin Aleksiev, Gaukhar Khassenova, Olga García Mancheño   +2 more
wiley   +1 more source

Entropy scaling based viscosity predictions for hydrocarbon mixtures and diesel fuels up to extreme conditions [PDF]

, 2019
An entropy scaling based technique using the Perturbed-Chain Statistical Associating Fluid Theory is described for predicting the viscosity of hydrocarbon mixtures and diesel fuels up to high temperatures and high pressures. The compounds found in diesel
Gavaises, M., Gupta, A., McHugh, M. A., Moore, J., Rokni, H.   +4 more
core   +1 more source

Insights Into the Enantioseparation of Polyhalogenated 4,4′‐Bipyridines With a Cellulose Tris(3,5‐Dimethylphenylcarbamate)‐Based Chiral Column by Using Supercritical Fluid Chromatography

ELECTROPHORESIS, EarlyView.
ABSTRACT In the last decade, by integrating experimental and computational analyses, it was demonstrated that halogen bond (HaB) may contribute to binding and enantiorecognition mechanisms underlying the HPLC enantioseparation of halogenated chiral analytes by using cellulose tris(3,5‐dimethylphenylcarbamate) (CDMPC)‐based chiral columns and n‐hexane ...
Emmanuelle Lipka, Roberto Dallocchio, Barbara Sechi, Mikheil Rukhaia, Giorgi Jibuti, Bezhan Chankvetadze, Victor Mamane, Paola Peluso   +7 more
wiley   +1 more source