Results 31 to 40 of about 538,149 (390)

Descriptors for terpene esters from chromatographic and partition measurements: Estimation of human odor detection thresholds [PDF]

open access: yes, 2020
We have used gas chromatographic retention data together with other data to obtain Abraham descriptors for 30 terpene esters. These include the air-water partition coefficient, as log Kw, for which no experimental values are available for any terpene ...
Abraham, Michael H   +2 more
core  

Asymmetric preparation of antifungal 1-(4 -chlorophenyl)-1-cyclopropyl methanol and 1-(4 -chlorophenyl)-2-phenylethanol. Study of the detoxification mechanism by Botrytis cinerea [PDF]

open access: yes, 2011
Chiral alcohols are important as bioactive compounds or as precursors to such molecules. On the basis of the different antifungal properties of the enantiopure alcohol derivatives of 4-chlorophenyl cyclopropyl ketone and benzyl 4-chlorophenyl ketone ...
Aleu Casatejada, Josefina   +4 more
core   +2 more sources

Carbohydrates in hot water extracts of soil aggregates as affected by long-term management [PDF]

open access: yes, 2002
Microbial carbohydrates are immediate by-products of microbial metabolism and play an important role in the formation and stabilization of soil structure.
Cheshire M.V.   +5 more
core   +1 more source

Chiral phosphines in nucleophilic organocatalysis

open access: yesBeilstein Journal of Organic Chemistry, 2014
This review discusses the tertiary phosphines possessing various chiral skeletons that have been used in asymmetric nucleophilic organocatalytic reactions, including annulations of allenes, alkynes, and Morita–Baylis–Hillman (MBH) acetates, carbonates ...
Yumei Xiao   +3 more
doaj   +1 more source

Effect of dipole polarizability on positron binding by strongly polar molecules [PDF]

open access: yes, 2015
A model for positron binding to polar molecules is considered by combining the dipole potential outside the molecule with a strongly repulsive core of a given radius.
Gribakin, G. F., Swann, A. R.
core   +2 more sources

New Cytotoxic and Antibacterial Compounds Isolated from the Sea Hare, Aplysia kurodai

open access: yesMarine Drugs, 2005
: The extract of the sea hare, Aplysia kurodai, showed cytotoxicity against HeLa cells and antibacterial activity against Staphylococcus aureus. Bioassay-guided purification afforded four active compounds, which were identified to be laurinterol ...
Tomihisa Ohta   +2 more
doaj   +1 more source

Metal-containing ceramic nanocomposites synthesized from metal acetates and polysilazane

open access: yesOpen Ceramics, 2020
Metal-containing (Mn, Fe, Co, Cu, Zn and Ag) polysilazane precursors are synthesized via one-step chemical reaction of metal acetates with poly(vinyl)silazane (Durazane 1800) at room temperature under argon atmosphere.
Jun Wang   +8 more
doaj   +1 more source

Role of ethylene on various ripening pathways and on the development of sensory quality of Charentais cantaloupe melons [PDF]

open access: yes, 2002
Charentais melons (Cucumis melo L., var cantalupensis Naud.) in which ethylene biosynthesis has been suppressed by an antisense ACC oxidase gene have been used to better understand the role of ethylene in the regulation of the ripening process of ...
Ambid, Christian   +9 more
core   +1 more source

The differential migration of sterol acetates on silica gels and its application to the fractionation of sterol mixtures*

open access: yesJournal of Lipid Research, 1962
The retention volumes of 12 sterol acetates relative to cholesteryl acetate were determined on four well-characterized silica gels of different body structure.
Peter D. Klein, Patricia A. Szczepanik
doaj   +1 more source

Maize tricin-oligolignol metabolites and their implications for monocot lignification [PDF]

open access: yes, 2016
Lignin is an abundant aromatic plant cell wall polymer consisting of phenylpropanoid units in which the aromatic rings display various degrees of methoxylation.
Boerjan, Wout   +8 more
core   +2 more sources

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