Results 111 to 120 of about 14,272 (226)

Polar Diels-Alder Reactions using Heterocycles as Electrophiles. Influence of Microwave Irradiation [PDF]

, 2015
In this work we studied a series of polar Diels-Alder reactions using different heterocycles derivatives acting as electrophiles joint to dienes of different nucleophilicity, analyzing the effect of the microwave irradiation in these processes. We employ
Della Rosa, Claudia Daniela, Kneeteman, Maria Nelida, López Baena, Anna Francesca, Mancini, Pedro Maximo Emilio   +3 more
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Novel Catalysts Based on Synthetic Mesoporous Silicates of the MCM-41 Type and Hydroxyapatite for Desulfurization of Model Fuel

Ceramics
Nanopowders of hydroxyapatite (HA) and Fe-substituted hydroxyapatite (HAFe) were synthesized by wet precipitation on either MCM-41 (a synthetic, mesoporous aluminosilicate material) or an aluminum-containing MCM-41 (AlMCM) support.
Nadezhda O. Donskaya, Margarita A. Goldberg, Alexander S. Fomin, Anna O. Koptelova, Polina D. Domashkina, Ekaterina A. Eseva, Olga S. Antonova, Anatoliy A. Konovalov, Alexander V. Leonov, Egor A. Kudryavtsev, Fadis F. Murzakhanov, Marat R. Gafurov, Argam V. Akopyan, Sergey M. Barinov, Vladimir S. Komlev   +14 more
doaj   +1 more source

Comparison of the HDS DBT reaction using bulk and supported catalysts

Chimica Techno Acta
The paper describes in detail the procedure for the preparation of a granular bulk NiMoW catalyst and a supported reference NiMo/Al2O3 catalyst. Mention is made of investigations of the supported and bulk catalysts by various physico-chemical methods ...
Polina P. Mukhacheva, Yuliya V. Vatutina, Ksenia A. Nadeina, Sergey V. Budukva, Maxim A. Panafidin, Vera P. Pakharukova, Mikhail V. Parfenov, Evgeny Yu. Gerasimov, Oleg V. Klimov, Aleksandr S. Noskov   +9 more
doaj   +1 more source

2,4-diphenylthiophene induces mainly base pair mutation in Salmonella Typhimurium [PDF]

, 2012
Heterocyclic aromatic compounds containing sulfur (S-HET), have been detected in air, soil, marine environment and freshwater sediment. Toxicity and mutagenicity data of this class of substances are scarce.
Budzikur, Kinga A., Chachaj-Brekiesz, Anna, Góra, Maciej, Mielżyńska-Švach, Danuta, Pawłowski, Marcin, Łuczyński, Michał K.   +5 more
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Dibenzothiophene [PDF]

, 2020
openaire   +1 more source

Do carbenium ion additions toward alkenes proceed via .pi. complexes? A stereochemical investigation [PDF]

, 1986
Mayr, Herbert, Pock, Rudolf, Rubow, Monika, Wilhelm, Eberhard   +3 more
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Gas-liquid hydrodynamics in Taylor Flows with complex liquids [PDF]

, 2010
Universitá di Pisa Facoltá di Ingegneria Dipartimento di Ingegneria Chimica, Chimica Industriale e Scienza dei Materiali Relazione di tirocinio in Ingegneria Chimica Gas-liquid hydrodynamics in Taylor Flows with complex liquids Il candidato: Federico ...
ALBERINI, FEDERICO
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The Sulfur Conversion Functional Microbial Communities in Biogas Liquid Can Participate in Coal Degradation

Polish Journal of Microbiology
The addition of biogas liquid is a practical way to improve the yield of biological coalbed methane. The microbial composition in biogas liquid is complex, and whether it could participate in the sulfur conversion of coal remains unknown.
Li Yang, Liang Zhong, Yan Xinyue, Qin Tianqi, Wu Zhaojun, Zheng Chunshan   +5 more
doaj   +1 more source

Plasmids and aromatic degradation in Sphingomonas for bioremediation : Aromatic ring cleavage genes in soil and rhizosphere [PDF]

, 2009
Microbial degradation pathways play a key role in the detoxification and the mineralization of polyaromatic hydrocarbons (PAHs), which are widespread pollutants in soil and constituents of petroleum hydrocarbons.
Sipilä, Timo
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