Bundle: Atoms and the Periodic Table This bundle is a $106.00 value, but has been marked down by 20%! A great deal, so don't miss out!This digital package contains everything that I have personally made and incorporate into the current science curriculum about Elements, Compounds, and The...
Quantitative-structure-toxicity-relationship (QSTR) models are developed for predicting the toxicity (pIGC 50 ) of 252 aliphatic compounds on Tetrahymena pyriformis . The single parameter models with a simple molecular descriptor, the number of atoms in the molecule, provide reasonable results. Better...
Chemical similarity assessment through multilevel neighbourhoods of atoms: definition and comparison with the other descriptors. J. Chem. Inf. Comput. Sci. 39, 666–670 (1999). Article CAS Google Scholar Chen, X. et al. Drug–target interaction prediction: databases, web servers and ...
This method is of value when the counting of individual carbon atoms of the glucose molecule is not desired. The decline of blood glucose specific activity has been determined in a normal subject.关键词: chemistry analytical procedures blood carbon 14 gluconic acid glucose labelled compounds liquids...
Structure and electronic properties of neutral and cationic pure and Ni-doped Ge clusters containing 1−20 Ge atoms are calculated within the framework of linear combination of atomic orbitals density functional theory. It is found that in clusters containing more than 8 Ge atoms the Ni atom is...
A multifunctional reagent for erythrocytes containing an amount sufficient to produce the lysis of erythrocytes or the sphering of erythrocytes in such a way that they can be detected by a cytometer or an automatic counting device, of a carbamate or of an agent inducing the formation by the ery...
TOO SMALL:Compounds and chemical equations involve simple numbers of atoms; unfortunately, atoms are too small to count. For example, to make table salt (sodium chloride, NaCl), we simply need one sodium atom to combine with one chlorine atom. It sounds easy, but these atoms are too small...
Other solvents which have been used are mineral oils and mono-, di- and tri-alkyl benzenes in which the alkyl groups each contain up to 12 carbon atoms. These solvents suffer from the disadvantage that they have relatively high vapour pressures, relatively low flash points, relatively high ...
carbon atoms, Z represents a sulfur atom, an oxygen atom or a carbon atom having a lower alkyl group, n denotes 0, 1 or 2, and X represents an anion, and specifically binds to cellular RNA to increase in fluorescence intensity, thereby fluorescence-staining nucleated cells in the blood ...
We stress that a consistent definition must lead to the relation zRTNR = zTRNT for a stoichiometric compound containing NR rare-earth atoms and NT transition metal atoms per formula unit. Appropriate definitions are discussed for more intricate cases, in particular for off-stoichiometric compounds.P...