Results 71 to 80 of about 659,088 (207)

Hydrocracking of atmospheric distillable residue of Mongolian oil

Mongolian Journal of Chemistry, 2014
Many catalytic processes to refine heavy part of crude oil have attracted much interest due to declining reserves of light crude oils. This study focused on hydrocracking process of atmospheric distillable residue of Mongolian crude oil in the first time
Ts Tugsuu, Sugimoto Yoshikazu, B Enkhsaruul, D Monkhoobor   +3 more
doaj   +1 more source

Suitable classification of mortars from ancient roman and renaissance frescoes using thermal analysis and chemometrics [PDF]

, 2015
Background Literature on mortars has mainly focused on the identification and characterization of their components in order to assign them to a specific historical period, after accurate classification.
Campanella, Luigi, F., Marinucci, M., Positano, Marini, Federico, Tomassetti, Mauro   +4 more
core   +1 more source

Vertical migration of some herbicides through undisturbed and homogenized soil columns

Orbital: The Electronic Journal of Chemistry, 2008
A laboratory experiment was conducted by using three herbicides, two from dinitroaniline group and one from thiocarbamate group to know their degree of downward movement (leachability) through soil columns and their contribution in ground water ...
Md. Wasim Aktar, Dwaipayan Sengupta, Swarnali Purkait, Ashim Chowdhury   +3 more
doaj  

Soil and soil-water chemistry below different amounts of logging residues at two harvested forest sites in Sweden

Silva Fennica, 2015
Logging residues (LR),i.e. tops, branches, and needles, are increasingly being harvested for energy production in Fennoscandia. These residues are temporarily piled on site awaiting transport.
Ring, Eva, Högbom, Lars, Nohrstedt, Hans-Örjan, Jacobson, Staffan   +3 more
doaj   +1 more source

Decomposition and nutrient release of leguminous plants in coffee agroforestry systems. [PDF]

, 2011
Leguminous plants used as green manure are an important nutrient source for coffee plantations, especially for soils with low nutrient levels.
ANDERSON J.D., ANDRADE F.V., BAGGIE I., COBO J.G., Dirk Freese, Eduardo da Silva Matos, Eduardo de Sá Mendonça, FOX R.H., GIACOMINI S.J., HA K.V., HADAS A., HANDAYANTO E., HÄTTENSCHWILER S., Irene Maria Cardoso, JAHNKE R.A., JONES R.B., LUPWAYI N.Z., LUPWAYI N.Z., LUPWAYI N.Z., MAFONGOYA P.L., MATOS E.S., MENDONÇA E.S., MONTEIRO H.C.F., MUELLER-HARVEY I., MUKURALINDA A., MURPHY J., NORTHUP R.R., OLIVEIRA A.O., Paulo César de Lima, ROBERTSON F.A., SARRUGE J.R., SILVA J.A.A., STEVENSON F.J., THOMAS R.J., THÖNNISSEN C., van SOEST P.J., WEATHERALL A., ZAHARAH A.R.   +37 more
core   +4 more sources

Reactivity of (1-methoxycarbonylpentadienyl)iron(1+) cations with hydride, methyl, and nitrogen nucleophiles [PDF]

, 2017
The reaction of tricarbonyl and (dicarbonyl)triphenylphosphine (1-methoxycarbonyl-pentadientyl)iron(1+) cations 7 and 8 with methyl lithium, NaBH3CN, or potassium phthalimide affords (pentenediyl)iron complexes 9a-c and 11a-b, while reaction with ...
Anobick Sar, Brown, Casas-Solvas, Cox, Creary, Donaldson, Donaldson, Donaldson, Donaldson, Donaldson, Donaldson, El Amouri, Ferber, Gree, Gree, Hanessian, Hossain, Iwata, Jaouen, Jayapal Reddy Gone, Julie Wondergem (nee Lukesh), Kausch-Busies, Knoelker, Kocsis, Konno, Laabassi, Lee, Lehmann, Lehmann, Li, Lukesh, Luyt, Morey, Motiei, Osella, Pandey, Pearson, Pinsard, Rostovtsev, Sergey Lindeman, Siddiquee, Sorenson, Sudhir, Sudhir, Szanti-Pinter, Szanti-Pinter, Szanti-Pinter, Tao, Top, Top, Trakossas, Wallock, Wasicak, William A. Donaldson, Ye, Young K. Yun, Yun, Yun, Yuzhi Ma   +58 more
core   +2 more sources

The Residue Chemistry Transformation Linked to the Fungi Keystone Taxa during Different Residue Tissues Incorporation into Mollisols in Northeast China

Agriculture
Managing carbon input from crop straw in cropland ecosystems could increase soil organic carbon (SOC) sequestration to achieve C neutrality and mitigate climate change.
Qilin Zhang, Xiujun Li, Guoshuang Chen, Nana Luo, Jing Sun, Ezemaduka Anastasia Ngozi, Xinrui Lu   +6 more
doaj   +1 more source

Examination of the Potential for Adaptive Chirality of the Nitrogen Chiral Center in Aza-Aspartame

Molecules, 2013
The potential for dynamic chirality of an azapeptide nitrogen was examined by substitution of nitrogen for the α-carbon of the aspartate residue in the sweetener S,S-aspartame.
Samir H. Bouayad-Gervais, William D. Lubell   +1 more
doaj   +1 more source

Dynamics underlie the drug recognition mechanism by the efflux transporter EmrE

Nature Communications
The multidrug efflux transporter EmrE from Escherichia coli requires anionic residues in the substrate binding pocket for coupling drug transport with the proton motive force. Here, we show how protonation of a single membrane embedded glutamate residue (
Jianping Li, Ampon Sae Her, Alida Besch, Belen Ramirez-Cordero, Maureen Crames, James R. Banigan, Casey Mueller, William M. Marsiglia, Yingkai Zhang, Nathaniel J. Traaseth   +9 more
doaj   +1 more source

Molecular Requirements for Ethanol Differential Allosteric Modulation of Ligand-Gated Ion Channels Based on Selective G Beta Gamma Modulation [PDF]

, 2010
It is now believed that the allosteric modulation produced by ethanol in glycine receptors (GlyRs) depends on alcohol binding to discrete sites within the protein structure.
Aguayo, Luis G, Avila, Ariel, Figueroa, Maximiliano, Guzman, Leonardo, Moraga-Cid, Gustavo, Peoples, Robert W., Yevenes, Gonzalo E   +6 more
core   +1 more source