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Inter-regional variation on leaf surface defenses in native and non-native Centaurea solstitialis plants
(Elsevier, 2015)
Plant chemical defenses can be qualitative (toxins) to face generalist herbivores and quantitative (digestibility reducers) to specialists. Trichomes can produce chemicals, but also acts as a quantitative defense and in ...
Hydroesterification versus hydroformylation-acetalization of 1-hexene catalyzed by soluble carbonylrhodium complexes of pyridine ligands
(ELSEVIER SCIENCE BV, 2005-09-14)
The rhodium(l) complexes, cis-[Rh(CO)(2)(amine)(2)] (PF6) (amine = pyridine, 2-picoline, 3-picoline, 4-picoline, 3,5-lutidine or 2,6-lutidine) dissolved in methanol under carbon monoxide atmosphere are effective catalysts ...
Organic matter in volcanic soils in Chile: Chemical and biochemical characterization
(MARCEL DEKKER INC, 1997)
Determinations were made of total soil organic matter (SOM), stable and labile organic fractions, biomass carbon (C), and chemical composition of several humus-soil-fractions in chilean volcanic soils, Andosols and Ultisols. ...
Electronic and Photophysical Properties of Re I (CO) 3 Br Complexes Modulated by Pyrazolyl-Pyridazine Ligands
(American Chemical Society, 2019)
The direct reaction of a series of substituted (1H-pyrazol-1-yl)pyridazine (L I : 6-(1H-pyrazolyl)pyridazine; L II : 3-chloro-6-(1H-pyrazole-1-yl)-pyridazine; L III : 6-(1H-3,5-dimethylpyrazolyl)pyridazine-3-carboxylic ...
Electrochemical evidence for interaction between glutathione and ampicillin
(1983)
The a.c polarographic method has been applied in the study of the glutathione-ampicillin interaction at pH 7.4 and 37°C. Ampicillin shifted the peak potentials of glutathione to less negative values. A linear relation was ...
Solvent Effects on the Amidic Bond: 1H Nuclear Magnetic Resonance Study of Acetamide and JV-Methylacetamide
(1981)
Af-methylacetamide and acetamide has been studied. The chemical shifts at infinite dilution show
approximately linear relationships with the donor number of the solvent.
In strong donor solvents it is possible to observe ...
Study of the early growth stages of chemically deposited ZnS thin films from a non-toxic solution
(Institute of Physics Publishing, 2018)
ZnS thin films grown by the chemical bath deposition method have been under intense investigation
due to their applications in solar cells. In this work, the early growth stages of ZnS thin films deposited
by means of a ...
13C-NMR and theoretical studies of internal rotation in methylated anilines
(1998)
The conformational properties of ten ring-methylated N-methyl- and N,N-dimethylanilines have been studied using 13C-NMR chemical shifts and spin-lattice relaxation times in CDCl3, and semi-empirical (AM1) quantum-chemical ...
Invasive and non-invasive congeneric Centaurea (Asteraceae) show contrasting patterns of herbivory by snails
(Royal Botanical Society of Belgium, 2016)
Background and aims - Once introduced into new regions, exotic species often experience shifts in resource allocation in response to the different environmental conditions found in the introduction range. Plants naturally ...
13C-NMR ano theoretical stuoies of internal rotation in methylateo anillnes
(Socieda Chilena de Quìmica, 1997-08-01)
The conformational properties of ten ring-methylated N-methyl- and N,Ndimethylanilines
have been studied using 13C-NMR chemical shifts and spin-Iattice
relaxation times in CDCI3, and semi-empírical (AM1) quantum-chemical ...