Tuning the sensing properties of spiropyrans (SPs), which are one of the photochromic molecules useful for colorimetric sensing, is important for efficient analysis, but their synthetic modification is not always simple. Herein, we introduce an alkyne-functionalized SP, the modification of which would be easily achieved via Cu-catalyzed azide-alkyne cycloaddition ("click reaction"). The alkyne-...

COUNCILORS: Viv i a n Co unts , Ben ed ic t C ol l eg e, 2 0 1 5 S andr a G ray , C lems o n Un i v er s i t y , 2 01 5 Mic he le H ar mo n, US C -Ai k en, 2 0 1 5 T o m Abr a ha ms e n, M idla n ds T ec hn ica l C ol l eg e, 2 0 1 6 Rad ma n A l i , M or r i s C ol l eg e, 2 0 1 6 Mi ke F ar me r , US C Up s ta t e , 2 0 1 6 Char les K e i t h, US C -Bea u for t , 2 0 1 6 W alte na S i mps o n...

background: toxic alcohol poisonings are responsible for high mortality and morbidity in russia. this study was aimed to evaluate the trends of harmful ethanol (etoh) drinking as well as methanol (meoh), isopropanol (ipa) and ethylene glycol (eg) poisonings in the middle urals region of russia. methods: in this retrospective study, the medical records of patients poisoned with meoh, ipa and eg ...

Using computer simulation techniques the defect structure and oxygen ion migration mechanism of oxide pyrochlores (eg. Gd2Zr207) was investigated in order to explain the decreased activation enthalpy for oxygen ion conductivity as a function of order. Shell model potentials were found to be necessary in order to obtain sufficiently accurate physical properties for the pyrochlore compound. The o...

Introduction 'We can model the euphoria and the fear stage of the business cycle. Their parameters are quite different. We have never successfully modelled the transition from euphoria to fear.' Quantitative models have been a central part of the story of the present financial crisis. It was the models used in financial markets which provided the basis for an assessment of risk exposure which w...

SPIDER (Source for Production of Ions of Deuterium Extracted from a Rf plasma) is an ion source test bed designed to extract and accelerate a negative ion current up to 40 A and 100 kV whose first beam is expected by the end of 2016. Two main effects perturb beamlet optics during the acceleration stage: space charge repulsion and the deflection induced by the permanent magnets (called co-extrac...