Heterogeneous Solid-Liquid Catalysis Of N-glycosylation By Natural Phosphate Doped With Potassium Iodide

Theone-step synthesis of several ?-D-ribonucleosides was performed in good yields under reflux in HMDS. Keywords: N-Glycosylation D-ribonucleosides,Natural phosphate doped with Potassium iodide KI (NP/KI), heterogeneous solid-liquid catalysi

Analysis of delamination

This paper reviews our understanding of the influence of delamination on the fracture sequence and final fracture of graphite-epoxy laminates. The emphasis here is on tensile fracture

The Semi (04-18-1983)

Originally published in print for Fuller Theological Seminary\u27s community from 1953 through 2014.https://digitalcommons.fuller.edu/fts-semi-4/1081/thumbnail.jp

Democracy in America

Romeo Castellucci is one of Europe’s best-known directors, a firebrand known for productions that are as thought-provoking as they are visually stunning. He returns to Peak Performances with the American premiere of “Democracy in America,” freely inspired by the work of Alexis de Tocqueville. Castellucci conjures majorettes who stir the crowd’s enthusiasm for democracy in America, colonial settlers who confound the native Americans, and a puritan couple who struggle to farm a barren land. He asks us to consider the empty promises of a political system steeped in Biblical egalitarianism rather than the concept of tragedy so essential to ancient Greek democracy, the dangers of majority rule, and the inherent violence that springs from religious puritanism and territorial conquests. His challenging, soul-stirring brand of theatrical magic transposes these painful, profound ideas into an enticing, vibrant, celebratory work of art.https://digitalcommons.montclair.edu/peak-performances-2018-2019/1012/thumbnail.jp

Recombination dynamics in ZnO nanowires: Surfaces states versus mode quality factor

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 97, 133116 (2010) and may be found at https://doi.org/10.1063/1.3496444.In this work, we investigate the influence of finite size on the recombinations dynamics of ZnO nanowires. We demonstrate that diameter as well as length of nanowires determine the lifetime of the neutral donor bound excitons. Our findings suggest that while the length is mainly responsible for different mode quality factors of the cavity-like nanowires, the diameter determines the influence of surface states as alternative recombinations channels for the optical modes trapped in the nanocavity. In addition, comparing nanowires grown using different catalyst we show that the surfaces states strongly depend on each precursor characteristics.DFG, 43659573, SFB 787: Halbleiter - Nanophotonik: Materialien, Modelle, BauelementeDFG, 53182490, EXC 314: Unifying Concepts in Catalysi

Reactions of trimethylsilylated silicate anions in acidic media. - Part 2 : The influence of reaction parameters

It is shown that the ion-exchange resin Amberlyst 15 acts as a powerful proton donor for SiO bond cleavages and rearrangements of trimethylsiloxysiloxanes. In the presence of hexamethyldisiloxane, transformations of trimethylsiloxysiloxanes of different structure show a dual effect: highly caged structures are loosened, while very loose structures become more rigid. Tetrameric ring structures predominate in the reaction products. The transformation reactions are controlled by the acid to hexamethyldisiloxane ratio in the reaction mixture. In the absence of hexamethyldisiloxane trimethylsiloxysiloxanes are highly degraded

Chemical History with a Nuclear Microprobe

A nuclear microprobe cannot give direct information on the chemical state of an element, but the spatial distribution of elements in a specimen is often determined by the chemical history of the sample. Fuel cells and minerals are examples of complex systems whose elemental distributions are determined by past chemical history. The distribution of catalyst in used fuel cell electrodes provides direct information on the chemical stability of dispersed catalysts under operating conditions. We have used spatially resolved Rutherford backscattering to measure the migration of platinum and vanadium from intermetallic catalysts and to determine their suitability for use under the extreme operating conditions found in phosphoric acid fuel cells. Geologic materials are complex, heterogeneous samples with small mineral grains. The trace element distribution within the individual mineral grains and between different mineral phases is sensitive to the details of the mineral formation and history. The spatial resolution and sub-100-ppm sensitivity available with a nuclear microprobe open up several new classes of experiments to the geochemist. Geochemistry and electrochemistry are two areas proving particularly fruitful for application of the nuclear microprobe

Catalytic Oxidation of Carbon Monoxide on Spinel Type Ferrites : Kinetic Characteristics

205-20

Representing and analysing molecular and cellular function in the computer

Determining the biological function of a myriad of genes, and understanding how they interact to yield a living cell, is the major challenge of the post genome-sequencing era. The complexity of biological systems is such that this cannot be envisaged without the help of powerful computer systems capable of representing and analysing the intricate networks of physical and functional interactions between the different cellular components. In this review we try to provide the reader with an appreciation of where we stand in this regard. We discuss some of the inherent problems in describing the different facets of biological function, give an overview of how information on function is currently represented in the major biological databases, and describe different systems for organising and categorising the functions of gene products. In a second part, we present a new general data model, currently under development, which describes information on molecular function and cellular processes in a rigorous manner. The model is capable of representing a large variety of biochemical processes, including metabolic pathways, regulation of gene expression and signal transduction. It also incorporates taxonomies for categorising molecular entities, interactions and processes, and it offers means of viewing the information at different levels of resolution, and dealing with incomplete knowledge. The data model has been implemented in the database on protein function and cellular processes 'aMAZE' (http://www.ebi.ac.uk/research/pfbp/), which presently covers metabolic pathways and their regulation. Several tools for querying, displaying, and performing analyses on such pathways are briefly described in order to illustrate the practical applications enabled by the model

The Systematic Design of CO2 Capture Processes Applied to the Oxidative Coupling of Methane

The oxidative coupling of methane is the catalytic conversion of methane into ethene. Carbon dioxide is generated as a reaction by-product and must be removed from the gaseous stream. In this paper, the application of a hybrid carbon dioxide removal process including absorption with amines and gas separation membranes is investigated through simulations and cost estimations.DFG, 53182490, EXC 314: Unifying Concepts in Catalysi