نتایج جستجو برای: spherical crystallisation
تعداد نتایج: 49291 فیلتر نتایج به سال:
The formation of intragranular pores, induced by diopside crystallization in diopside–albite glasses, was highlighted in a previous study and here confirmed by SEM observation. The sinter-crystallization kinetics of four glass compositions, labelled G1, G2, G3 and G2-Cr, characterized by the formation of induced crystallisation porosity, PCR, was investigated. The activation energies of crystal...
This paper discusses the development of a system for the automated real-time measurement of crystal size distributions during crystallisation. An optimised selection of the Daubechies wavelet coefficients is used as input to a Multi–Layer Perceptron artificial neural network to characterise the crystal scale lengths. This technique gives significant advantages over the sampling-based measuremen...
Crystallisation processes have evolved to practical methods that allow isolation of an enantiopure product in high yield. Viedma ripening in particular enables access to enantiopure products in a reliable way, simply through grinding of crystals in a solution. This tutorial review covers the basic principles behind asymmetric crystallisation processes, with an emphasis on Viedma ripening, and s...
X-ray structures of three different membrane proteins in complex with antibody fragments have been published. The binding of Fv or Fab fragments enlarges the hydrophilic part of integral membrane proteins, thereby providing additional surface for crystal contacts and space for the detergent micelle. In all reported cases, antibody binding was either essential for the crystallisation of the memb...
Two crystal structures of PCBM, obtained from different crystallisation solvents, are presented; a proposed link with solvent dependence of the efficiency of MDMO-PPV:PCBM solar cells is described.
The ‘Knowledge Age’ has fuelled the need to capitalise on organisation-wide Intellectual Capital with the aim of gaining competitive advantage vis-à-vis a higher return-on-knowledge and experience. In this paper, we propose a novel tacit knowledge acquisition and representation strategy using Scenarios based on the assumption that tacit knowledge can best be explicated through controlled challe...
We present new time-resolved powder diffraction data measured in situ during the hydrothermal crystallisation of two families of crystalline inorganic materials. In the first study, we have used time-resolved energy-dispersive X-ray diffraction (EDXRD) to follow the formation of zeolitic zinc phosphates from amine phosphates and zinc oxide in acidic solutions at 60-150 degrees C. The advantage ...
The purpose of the present work was to engineer lactose carrier particles for inhalation using a solid-state crystallisation amorphous spray dried approach. A suspension contacted with hot ethanol 10 and 30 s produce spherical (ESDL10) (ESDL30) different degrees crystallinity, particle size, controlled surface rugosity. Lactohale® (control) engineered (ESDL) were characterised by Scanning Elect...
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