Results 1 to 10 of about 2,786,318 (328)

Chemical composition of snakes.

PLoS ONE, 2022
The present study was carried out to provide insight into the body composition of snakes, which is an important basis for determination of nutrient requirement and physiological processes.
Petra Kölle, Linda F Böswald, Annita Brenner, Ellen Kienzle   +3 more
doaj   +4 more sources

Preparation and Separation Properties of Electrospinning Modified Membrane with Ionic Liquid Terminating Polyimide/Polyvinylpyrrolidone@Polydopamine

Membranes, 2022
In this paper, superhydrophilic polyimide (PI) membranes were prepared using the electrostatic spinning method, capped with a hydrophilic ionic liquid (IL), and blended with polyvinylpyrrolidone (PVP).
Peng Qi, Hongge Jia, Shuangping Xu, Qingji Wang, Guiming Su, Guoxing Yang, Mingyu Zhang, Yanqing Qu, Fuying Pei   +8 more
doaj   +1 more source

Synthesis of a novel phosphate-containing ligand rhodium catalyst and exploration of its optimal reaction conditions and mechanism for the polymerization of phenylacetylene

Heterocyclic Communications, 2023
Due to the chemical properties of Group VIII transition metals and their importance in catalytic processes, the reactions of rhodium and its neighboring organic complexes have received much attention as model systems.
Zhang Mingyu, Tang Yuqi, Xu Rui, Yan Dong, Xu Shuangping, Qu Yanqing, Xu Jingyu, Jia Hongge   +7 more
doaj   +1 more source

Synthesis of rhodium catalysts with amino acid or triazine as a ligand, as well as its polymerization property of phenylacetylene

Heterocyclic Communications, 2022
Three novel rhodium complexes, with l-tyrosine (l-Tyr), l-arginine (l-Arg), or 2,4-diamino-6-phenyl-1,3,5-triazine (Dpt) as a ligand, named as [Rh(cod)(l-Tyr)], [Rh(cod)(l-Arg)], and [Rh(cod)(Dpt)2], respectively, had been synthesized for catalyzing the ...
Xu Rui, Zhang Mingyu, Zhang Yuyan, Jia Hongge   +3 more
doaj   +1 more source

Comparison of gas and kerosene oils chemical composition before and after hydrotreating using comprehensive two-dimensional gas chromatography

Journal of Chromatography Open, 2022
Information on the detailed composition of the feedstock and product from the hydrotreating is essential for a better understanding of the reactions, possible optimization of the process conditions, development of new catalysts, and achieving a better ...
Lucie Šindelářová, Estella Ngoc Luu, Petr Vozka   +2 more
doaj   +1 more source

Crystallization of Nano-Sized Macromolecules by the Example of Hexakis-[4-{(N-Allylimino)methyl}phenoxy]cyclotriphosphazene

Nanomaterials, 2022
The synthesized compound was characterized by 31P, 13C, and 1H NMR spectroscopy and MALDI-TOF mass spectroscopy. According to DSC data, the compound was initially crystalline, but the crystal structure was defective.
Evgeniy Chistyakov, Pavel Yudaev, Yulia Nelyubina   +2 more
doaj   +1 more source

Chemical Composition of Kombucha

Beverages, 2022
Kombucha is a fermented sweetened tea with a mixed fermenting culture of yeast and acetic acid bacteria. While the history of kombucha is not completely clear, it is now available around the world and has shown an increase in availability and demand in ...
Peyton Bishop, Eric R. Pitts, Drew Budner, Katherine A. Thompson-Witrick   +3 more
doaj   +1 more source

Research Progress on Structural Modification of Effective Antitumor Active Ingredients in Licorice

Molecules, 2023
Licorice, a widely used traditional Chinese medicine, contains more than 300 flavonoids and more than 20 triterpenoids, which have potential medicinal value and can prevent the growth of tumor cells by blocking the cell cycle, affecting the regulation of
Chi Liu, Qing Ma, Guangfei Gong, Fengyan Su   +3 more
doaj   +1 more source

Yield of essential oil from varieties of Citrus sinensis (L.) Osbeck [PDF]

Revista Brasileira de Fruticultura, 2023
Residues are generated after the processing of citrus fruits and can be used for essential oil extraction. Thus, the objective of this work was to evaluate the composition, yield, and quality of the proven oil of 30 orange varieties, as an alternative ...
Fernanda Rodrigues dos Santos, Jaqueline Lima da Conceição Souza, Barbara Rodrigues da Silva, Caio César de Oliveira Pereira, Rilner Alves Flores, Eli Regina Barboza de Souza   +5 more
doaj   +1 more source

Measurement report: The effects of SECA regulations on the atmospheric SO₂ concentrations in the Baltic Sea, based on long-term observations on the Finnish island, Utö [PDF]

Atmospheric Chemistry and Physics
The designation of the Baltic Sea as a sulfur emission control area (SECA) in May 2006, with subsequent tightening of regulations in 2010 and 2015, has reduced the sulfuric emission from shipping traffic.
A. Maragkidou, T. Grönholm, L. Rautiainen, J. Nikmo, J.-P. Jalkanen, T. Mäkelä, T. Anttila, L. Laakso, L. Laakso, J. Kukkonen, J. Kukkonen   +10 more
doaj   +1 more source