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“canonical” form observed biologically, B-DNA, has a wide, shallow major groove and a relatively deep and narrow minor groove. This anionic structure lends itself to various interactions with coordination complexes,48,49e.g., by dative orcovalent bondsor shape selectivity or via the stacked ...
This chapter describes the different aspects of bond breaking in quantum chemistry. Ab initio quantum chemical methods can predict the equilibrium properties of small molecules in the gas phase to near-spectroscopic accuracy. A detailed understanding of a chemical reaction often requires the knowledge of...
(asymmetrically polymer-brush–decorated CNCs; aPB-CNCs) were synthesized via a CNC intermediate possessing two types of dormant moieties for controlled radical polymerization at the reducing end and other surfaces, respectively. The aPB-CNCs exhibited good dispersion in organic solvents and form a ...
View chapterExplore book Beaches, Physical Processes Affecting* A.D.Short, inEncyclopedia of Ocean Sciences (Second Edition), 2001 Chemical influences Water chemistrymodifies tropical beaches through the formation ofbeachrock, thecementationof the intertidal sand grains by carbonate cement. This commonly ...
We have determined that SOA forms from the heterogeneous/multiphase oligomerization of primary reaction products to form esters, hemiacetals, and acetals, and not through second-generation reactions. Chapter 4 discusses the chemical composition of SOA formed from the reaction of m-xylene and how the...
J. (1982). Diet and the evolution of modern form in the Middle East.American Journal of Physical Anthropology 58: 37–52. Google Scholar Schoeninger, M. J. (1985). Trophic effects on15N/14N and13C/12C ratios in bone collagen and strontium levels in bone mineral.Journal of Human ...
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This paper describes a one-pot procedure to yield chelate-bearing radiolabeled cconjugates via click-type reaction of azides and alkyne derivatives with either L-propargyl glycine or L-azido alanine to form 1,2,3-triazole-4-yl alanines. The one-pot procedure constituted a substantial improvement...
1、高中化学必修1第四章知识点(Highschoolchemistry1chapter4knowledgepoints)ThefourthchapterThefirstsectionofsiliconInnature,siliconisintheformofsilicaandsilicates,andthereisnosuchthingassiliconThepropertiesofsilicondioxide:highmeltingpoint,largehardnessandinsolubleinwater1.Silicaisacidicoxide:canreactwithalkalioralk ...