Results 41 to 50 of about 34,111 (160)

Light‐Driven Enzymatic Decarboxylation of Dicarboxylic Acids

open access: yesChemistryOpen, 2021
Photodecarboxylase from Chlorella variabillis (CvFAP) is one of the three known light‐activated enzymes that catalyzes the decarboxylation of fatty acids into the corresponding C1‐shortened alkanes.
Yong‐Yi Zeng   +3 more
doaj   +1 more source

Note on the Hyper-Wiener Index [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
The hyper-Wiener index WW of a chemical tree T is defined as the sum of the products n1n2, over all pairs u, u of vertices of T, where n1 and n2 are the number of vertices of T, lying on the two sides of the path which connects u and u.
IVAN GUTMAN   +2 more
doaj  

Avanços metodológicos na determinação do consumo de ruminantes em pastejo Advances in methods for determining animal intake on pasture

open access: yesRevista Brasileira de Zootecnia, 2007
Avanços metodológicos são, usualmente, conseqüência direta de avanços conceituais e tecnológicos. No caso da estimativa do consumo em pastejo, os recentes avanços conceituais relativos ao processo de busca e apreensão da forragem pelo ruminante ...
Paulo César de Faccio Carvalho   +5 more
doaj   +1 more source

Description of complexation thermodynamic parameters for alkanes and polyaromatic hydrocarbons in the framework of semiempirical methods

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов
The paper presents a comparative analysis of quantum chemical semiempirical methods for calculation of the binding thermodynamic parameters for CnH2n+2 alkanes (n=6–14) and polyaromatic hydrocarbons of the coronene series as model structures of the ...
E.S. Kartashynska
doaj   +1 more source

Wiener-type indices and internal molecular energy [PDF]

open access: yesJournal of the Serbian Chemical Society, 2003
In earlier studies it was established that internal molecular energies (Eint) of alkanes can be reproduced, in an approximate yet reliable manner, by means of a molecular-graph-based structure-descriptor U.
BORIS FURTULA   +3 more
doaj  

Estimation of Formation Enthalpy for Alkanes from 13C NMR Chemical Shifts

open access: yesChinese Journal of Magnetic Resonance, 2019
The quantitative relationship between the 13C NMR chemical shifts of alkanes and their formation enthalpy was studied. A new approach for calculating the formation enthalpy from the 13C NMR chemical shifts was proposed.
WU Ya-xin, CAO Chen-zhong, TENG Li-li
doaj   +1 more source

Study of sepiolite from Goles (Kosovo, Yugoslavia). I. Sorption capacity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
The sorption of molecules of different size and polarity (water, n-hexane, isooctane, benzene, toluene, cyclohexane, carbon tetrachloride, isopropanol, isobutanol, methanol, ethanol) by sepiolite from Goles, i.e.
DRAGOMIR VITOROVIC   +2 more
doaj  

Computing Entropy for Long-Chain Alkanes Using Linear Regression: Application to Hydroisomerization

open access: yesEntropy
Entropies for alkane isomers longer than C10 are computed using our recently developed linear regression model for thermochemical properties which is based on second-order group contributions.
Shrinjay Sharma   +7 more
doaj   +1 more source

New data on geochemistry and petrology of Topolninsky Chemical composition of petroleum of Krapivinskoe oilfield

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов, 2019
Relevance of the work is caused by the need to obtain the detailed information on hydrocarbon compositions and molecule structures of resin-asphaltene components in petroleum from Krapivinskoye oilfield to solve the problems arising at its production ...
Altynay Torlomoeva   +3 more
doaj  

Comparative Bioremediation of Tetradecane, Cyclohexanone and Cyclohexane by Filamentous Fungi from Polluted Habitats in Kazakhstan

open access: yesJournal of Fungi
Studying the fates of oil components and their interactions with ecological systems is essential for developing comprehensive management strategies and enhancing restoration following oil spill incidents.
Mariam Gaid   +8 more
doaj   +1 more source

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