Претраживање
Приказ резултата 561-570 од 598
Further sesquiterpene lactones from Anthemis carpatica
(Pergamon, 2000)
A new germacranolide, (E)-1α, 10β-epoxy-3β-acetoxy-6α-hydroxygermacra-4,11(13)-dien-12,8α-o lide, together with nine new highly oxygenated guaiadien-12,6α-olides of anthemolide, and cumambrin type were identified in the ...
Pyrrolizidine Alkaloids and Fatty Acids from the Endemic Plant Species Rindera umbellata and the Effect of Lindelofine-N-oxide on Tubulin Polymerization
(MDPI, 2013)
The examination of the aerial parts, roots, and seeds of the endemic plant Rindera umbellata is reported in this paper for the first time. Phytochemical investigation of R. umbellata led to the isolation and characterization ...
Density functional theory study of the magnetic coupling interaction in a series of binuclear oxalate complexes
(Springer Wien, Wien, 2012)
Magnetic couplings in oxalate-bridged binuclear complexes, namely five isomers of [(VO)(2)(ox)(SCN)(6)](4-), trans-(equatorial, equatorial), cis-(equatorial, equatorial), trans-(axial, axial), cis-(axial, axial), and (axial, ...
DFT and MM description of the structure and magnetic properties of manganese complexes with X-phenylcyanamido bridging ligand
(Springer Wien, Wien, 2011)
Magnetic properties of the complexes [Mn(3-Clpcyd)(H(2)O)-(phen)(2)](+), [{Mn(3-Fpcyd)(MeOH)(phen)}(2)(mu-3-Fpcyd)(2)], [{Mn(3-Fpcyd)(EtOH)(phen)}(2)(mu-3-Fpcyd)(2)], [{Mn(3-Clpcyd)(MeOH)(phen)}(2)(mu-3-Clpcyd)(2)], and ...
A comparative study of the electrochemical properties of carbon nanotubes and carbon black
(Elsevier, 2009)
Two samples of commercial multi-walled carbon nanotubes (Sigma-Aldrich and Sun Nanotech) and a sample of carbon black (Vulcan XC-72R) were investigated in raw state and after the activation in nitric and sulfuric acid by ...
Kinetic Analytical Method for Determination of Uric Acid in Human Urine using Analyte Pulse Perturbation Technique
(Sociedade Brasileira de Química, 2012)
Simple and reliable novel methods for the determination of uric acid (UA) are proposed and validated. For quantitative determination of UA, two matrices were used: the Bray-Liebhafsky (BL) oscillatory reaction in a stable ...
Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
(Wiley, Hoboken, 2017)
Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized ...
Differences in direct pharmacologic effects and antioxidative properties of mature breast milk and infant formulas
(Elsevier Science Inc, New York, 2013)
Objective: Early-onset and exclusive breast-feeding provides a significant health benefit to infants compared with infant formulas. The aim of this study was to compare mature breast milk with standard infant formulas by ...
The conformation of epinephrine in polar solvents: an NMR study
(Springer/Plenum Publishers, New York, 2018)
Epinephrine (Epi) is a physiologically important catecholamine. Molecular conformation of Epi controls the interactions with other molecules and its biological effects. There have been a number of theoretical studies ...
Quantitative structure-retention relationship of new N-substituted 2-alkylidene-4-oxothiazolidines
(Wiley-Blackwell, Malden, 2011)
A quantitative structure-retention relationship (QSRR) was built to investigate the relationship between the structural descriptors of 23 newly synthesized N-substituted 2-alkylidene-4-oxothiazolidines and their chromatographic ...