Results 171 to 180 of about 84,531 (218)

Structural modifications induced by dehydration in yugawaralite

1994
The dehydration behavior of yugawaralite has been studied by single crystal x-ray diffraction on three samples dehydrated under vacuum at 20, 150 and 200°C, resp. Yugawaralite held in vacuum at room temp. (r.T) - even for relatively long times - does not show noticeable structural changes with respect to untreated samples.
A. Alberti, S. Quartieri, VEZZALINI, Maria Giovanna   +2 more
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Structural investigation of polyacrolein by fractional dehydration

Journal of Polymer Science Part A: General Papers, 1965
AbstractThe utilization of a specially developed technique for the low temperature pyrolysis of polyacrolein, and the accurate measurement of the waterr eleased thereby from the polymer have demonstrated the presence of well‐defined inflection points in the curve of water evolution versus dehydration (pyrolysis) temperature.
L. Hunter, J. W. Forbes
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The crystal structure of dehydrated NaX

Zeolites, 1995
Abstract The crystal structure of dehydrated NaX, composition Na 88 Al 88 Si 104 O 384 , a 0 = 25.099(5) A, has been determined using single-crystal X-ray diffraction methods and refined in space group Fd3. Diffraction symmetry and refined T - O distances indicate substantial ordering of Si and Al in the T sites.
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Effect of thermal dehydration and rehydration on Na-magadiite structure

Journal of Colloid and Interface Science, 2009
The effect caused by dehydration and rehydration of the synthetic Na-magadiite was investigated by TGA, XRD, SEM, and (29)Si NMR. Thermal analysis of Na-magadiite presented two well-defined loss mass stages between 20 and 150 degrees C and another between 270 and 310 degrees C, both related to the removal of interlayer water.
Aline O, Moura, Alexandre G S, Prado
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Dehydrated Biomimetic Membranes with Skinlike Structure and Function

ACS Applied Materials & Interfaces
Novel vapor-permeable materials are sought after for applications in protective wear, energy generation, and water treatment. Current impermeable protective materials effectively block harmful agents but trap heat due to poor water vapor transfer. Here we present a new class of materials, vapor permeable dehydrated nanoporous biomimetic membranes (DBMs)
Hyeonji Oh, Yu-Ming Tu, Laximicharan Samineni, Sophie De Respino, Behzad Mehrafrooz, Himanshu Joshi, Lynnicia Massenburg, Horacio Lopez-Marques, Nada Elessawy, Woochul Song, Harekrushna Behera, Raman Dhiman, Veda Sheersh Boorla, Kartik Kher, Yi-Chih Lin, Costas Maranas, Aleksei Aksimentiev, Benny D. Freeman, Manish Kumar   +18 more
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Dehydration behavior and structural characterization of the GW275919X monohydrate

International Journal of Pharmaceutics, 2006
GW275919X, a central muscle relaxant for the treatment of lower back pain, exists in a monohydrate. Knowledge of the solid state dehydration behavior and the crystal structure is essential for determining its relative physical stability. Thermal analysis and hot-stage powder X-ray diffraction were used to study the solid state phase transformation ...
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Structural study of the dehydration of templated zirconium phosphate fluorides

Solid State Sciences, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Martin Wloka, Sergey Troyanov, Erhard Kemnitz   +2 more
openaire   +1 more source

Dehydration of nigeran crystals: Crystal structure and morphological aspects

Journal of Molecular Biology, 1979
Abstract The crystal structure of anhydrous nigeran, poly[(1 → 3)-α- d -maltose], obtained from Penicillium crustosum has been determined by a combined electron diffraction. X-ray diffraction and packing analysis. The electron diffraction pattern from solution-grown single crystals shows some (h k I) reflections in the baseplane pattern.
Perez, S., Roux, M., Revol, J.F., Marchessault, R.H.   +3 more
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Structural properties of dehydrated products during rehydration

International Journal of Food Science & Technology, 2001
The following structural properties of dehydrated apple, banana, carrot and potato were examined during rehydration: true density, apparent density, porosity and specific volume. Samples were dehydrated using five different drying methods: conventional, vacuum, freeze, microwave and osmotic; after which they were rehydrated in an air dryer at 50 °C and
Magdalini K. Krokida, Zacharias B. Maroulis   +1 more
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Dehydration and structural development of mullite precursors: an FTIR spectroscopic study

Journal of the European Ceramic Society, 2001
Mullite type, I and III precursors were prepared by a sol-gel process using tetracthoxysilane and aluminum scc.-butoxide as starting materials. The precursors were treated by 15 h heating steps in intervals of 100°C from 200 to 1000°C. Type III precursors are characterized by a more discontinuous decrease of the analytical water content compared to ...
Beran, A., Voll, D., Schneider, H.
openaire   +3 more sources