Spontaneous crystallization of sodium chloride from aqueous-ethanol solutions; Part 3: Examination of a model of the crystallization process

2007 ◽  
Vol 42 (8) ◽  
pp. 758-765 ◽  
Author(s):  
Oleg D. Linnikov
Keyword(s):  
Sodium Chloride ◽  
Crystallization Process ◽  
Aqueous Ethanol ◽  
Spontaneous Crystallization

Investigation of Time Instability Factors in Ti-SbxTe Based Phase Change Memory

2013 ◽  
Vol 873 ◽  
pp. 825-830 ◽  
Author(s):  
Xing Long Ji ◽  
Liang Cai Wu ◽  
Feng Rao ◽  
Zhi Tang Song ◽  
Min Zhu ◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Crystallization Process ◽  
Phase Change Memory ◽  
Structure Model ◽  
Data Retention ◽  
Spontaneous Crystallization ◽  
Change Trend ◽  
Band Structure Model ◽  
Change Memory

In this paper, the two time instability factors in phase change memory, amorphous resistance drift and spontaneous crystallization process, are studied based on Ti2.75(SbxTe)97.25 and Ti6.85(SbxTe)93.15. The drift coefficients of both components are calculated and compared under room temperature. The reason why the drift coefficient decreases with the Ti concentration increases is discussed based on the band structure model of amorphous phase change materials. And the data retention change trend is also presented. The experiment results and the physical explaination can also be extended to other metallic element doped SbxTe alloy phase change materials.

scholarly journals Simulation of an industrial sodium chloride (NaCl) crystallization process and applications

2014 ◽  
Vol 0 (13) ◽  
Author(s):  
Josefina Renedo Omaechevarría ◽  
Cynthia Sacristán Pérez ◽  
Josefa Fernandez Ferreras
Keyword(s):  
Sodium Chloride ◽  
Crystallization Process

scholarly journals Drowning-out crystallization of sodium molybdate in aqueous-ethanol solutions

2020 ◽  
pp. 17-17
Author(s):  
Jesús Casas ◽  
Josué Lagos
Keyword(s):  
Aqueous Solution ◽  
Room Temperature ◽  
Crystallization Process ◽  
Aqueous Ethanol ◽  
Sodium Molybdate ◽  
Operating Costs ◽  
Industrial Processes ◽  
Saturation Control ◽  
Crystallization Method ◽  
Evaporative Crystallization

The drowning-out crystallization process of sodium molybdate (Na2MoO4) was studied in water-ethanol solutions at room temperature. Sodium molybdate was separated from the solution in well crystalline particles using less water and energy compared with the industrial processes that use evaporative crystallization. Results showed that crystallization of sodium molybdate di-hydrate was achieved after 20 or 40 minutes, in one or two operating stages for super-saturation control with the addition of 25 or 50 vol% ethanol respectively. Crystallization with ethanol could reduce the operating costs in about 32%, respect to conventional evaporative crystallization method and the exhausted ethanol in the aqueous solution could be recovered by distillation and then recycled into the process.

Synthesis and Biological Activity of Some Thiosemicarbazide

2019 ◽  
Vol 4 (4) ◽  
pp. 228-231
Author(s):  
Rohit R. Wakodkar ◽  
Mazahar Farooqui ◽  
Pravin Kulkarni ◽  
Deepak D. Kayande
Keyword(s):  
Biological Activity ◽  
Sodium Chloride ◽  
Antifungal Activity ◽  
13C Nmr ◽  
Fungal Pathogens ◽  
Aqueous Ethanol ◽  
Antibacterial And Antifungal Activity ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Antibacterial And Antifungal

In this paper, thiosemicarbazone derivatives have been prepared from substituted aromatic aldehyde and thiosemicarbazide in presence of sodium chloride. This method is an efficient, mild, inexpensive, non-toxic and environment benign catalyst. This protocol includes the reaction followed by using sodium chloride to accelerate the reaction in aqueous ethanol. The structure of synthesized compounds were determined by IR, 1H NMR, 13C NMR and mass spectroscopies as well as the compounds were also screened for antibacterial and antifungal activity against certain Gram-negative and Gram-positive bacteria and fungal pathogens.

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