Results 251 to 260 of about 1,043,173 (301)
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Chemical Engineering and Processing: Process Intensification, 1988
Abstract It is shown how to design a crystallizer starting with data which must be determined in laboratory crystallizers and other measuring equipment. A survey on kinetic data of a large number of systems is given in order to show the range of parameters involved in crystallization. The paper deals with the scale-up problems of crystallizers which
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Abstract It is shown how to design a crystallizer starting with data which must be determined in laboratory crystallizers and other measuring equipment. A survey on kinetic data of a large number of systems is given in order to show the range of parameters involved in crystallization. The paper deals with the scale-up problems of crystallizers which
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Stretchable photonic crystal design
Optical and Quantum Electronics, 2016We compare numerically two implementations of stretchable photonic crystals embedded in elastic polymers. Our analysis, which classifies the bandgaps according to two simply determined parameters, indicates that such structures exhibit bandgaps that can be readily adjusted by straining the polymer.
Anas Othman, David Yevick
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IEEE Journal of Solid-State Circuits, 1980
The operation of MOS crystal oscillators is investigated assuming near-sinusoidal AC voltages at gate and drain. It is shown that the circuit operation depends basically on only two normalized parameters. Computer solution is used to produce a series of normalized curves allowing oscillator design for prescribed start-up conditions, steady-state ...
R.G. Meyer, D.C.-F. Soo
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The operation of MOS crystal oscillators is investigated assuming near-sinusoidal AC voltages at gate and drain. It is shown that the circuit operation depends basically on only two normalized parameters. Computer solution is used to produce a series of normalized curves allowing oscillator design for prescribed start-up conditions, steady-state ...
R.G. Meyer, D.C.-F. Soo
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Crystal designing organic ferrimagnets**
Advanced Materials, 1995Controlling the structure of a molecular assembly by using a molecule carrying both a functional site and an orientation controlling site has recently been achieved. The latter site plays the role of arranging the functional molecules by utilizing hydrogen bonding interactions or charge‐transfer interactions between the orientation controlling sites ...
Akira Izuoka +2 more
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Chem. Commun., 2014
In this Viewpoint, the impact of the paper published by Gautam R. Desiraju and Angelo Gavezzotti (J. Chem. Soc., Chem. Commun., 1989, 621) upon the development ofCrystal Engineering, now recognised a key discipline in contemporary chemical/pharmaceutical/materials science, is discussed.
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In this Viewpoint, the impact of the paper published by Gautam R. Desiraju and Angelo Gavezzotti (J. Chem. Soc., Chem. Commun., 1989, 621) upon the development ofCrystal Engineering, now recognised a key discipline in contemporary chemical/pharmaceutical/materials science, is discussed.
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International Journal of Refractory Metals and Hard Materials, 2006
Abstract Hardness is measured by indenting, or by scratching, a solid. In general, it is a measure of structural stability which, in turn, is determined by elastic stiffness, plastic resistance, resistance to structure change; all of which vary with chemical bonding type (electronic structure).
J.J. Gilman, R.W. Cumberland, R.B. Kaner
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Abstract Hardness is measured by indenting, or by scratching, a solid. In general, it is a measure of structural stability which, in turn, is determined by elastic stiffness, plastic resistance, resistance to structure change; all of which vary with chemical bonding type (electronic structure).
J.J. Gilman, R.W. Cumberland, R.B. Kaner
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Design of agitated crystallizers
Crystal Research and Technology, 1994AbstractThe evaluation and/or design method for crystallization, based on the system constant BN, has been applied on crystallization data of various substances published in the literature. A correlation of the BN values with the relative kinetic exponent of crystallization, n/g, demonstrates that the applicability of the method is independent of the ...
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Single-Crystal-to-Single-Crystal Topochemical Polymerizations by Design
Accounts of Chemical Research, 2008The polymerization of simple conjugated dienes has long been of interest: polydienes occur throughout Nature, and polyisoprene and its analogues form the basis of entire industries. In contrast, the polymers of similar small conjugated compounds, diacetylenes, trienes, and triacetylenes, are either unknown or laboratory curiosities.
Joseph W, Lauher +2 more
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1976
There exists only a very limited number of papers dealing with the design of batch crystallisers. This is mainly due to the complexity of the problems involved: the mass of precipitated crystals is increasing during the run and so also is their surface area, whereas the supersaturation varies in a complex way depending on the cooling or evaporation ...
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There exists only a very limited number of papers dealing with the design of batch crystallisers. This is mainly due to the complexity of the problems involved: the mass of precipitated crystals is increasing during the run and so also is their surface area, whereas the supersaturation varies in a complex way depending on the cooling or evaporation ...
openaire +1 more source