Preparation of pure cyclohexane by a molecular distillation method

1967 ◽  
Vol 3 (12) ◽  
pp. 835-836
Author(s):  
A. N. Aleksandrov ◽  
E. P. Kravtsova ◽  
S. L. Skop
Keyword(s):  
Molecular Distillation ◽  
Distillation Method ◽  
Pure Cyclohexane

A rapid molecular distillation method for the determination of the degree of polymerization

1949 ◽  
Vol 3 ◽  
pp. 440-444 ◽  
Author(s):  
H. Booy ◽  
H.I. Waterman
Keyword(s):  
Molecular Distillation ◽  
Degree Of Polymerization ◽  
Distillation Method

Preparation of Polyurethane Solid Tire with Low Heat Generating

2011 ◽  
Vol 366 ◽  
pp. 478-481 ◽  
Author(s):  
Yu Hua Yi ◽  
Shi Lei Zhang
Keyword(s):  
Molecular Distillation ◽  
Raw Materials ◽  
Dynamic Performance ◽  
Chain Extender ◽  
Polyurethane Elastomer ◽  
Distillation Method ◽  
Heat Build Up ◽  
Polyurethane Prepolymer

Based on PTMEG and TDI as raw materials,a polyurethane prepolymer with low free TDI monomer was synthesized by molecular distillation method,then a castable polyurethane solid tire was preparaed with MOCA as chain extender,and the dynamic performance of this elastomer and the durable properties of this solid tire was investigated.The results showed that the polyurethane elastomer based on the low free prepolymer has excellent dynamic performance, a low heat build-up and the solid tire has excellent endurance quality.

Immunolocalization of nuclear antigens in cryofixed cells which have been prepared by molecular distillation drying or freeze-substitution

1990 ◽  
Vol 48 (3) ◽  
pp. 898-899
Author(s):  
David L. Spector ◽  
Robert J. Derby
Keyword(s):  
Cell Nucleus ◽  
Molecular Distillation ◽  
Functional Organization ◽  
Freeze Substitution ◽  
3 Dimensional ◽  
Small Nuclear Ribonucleoprotein ◽  
Nuclear Antigens ◽  
Dimensional Reconstruction ◽  
Nuclear Regions ◽  
Immunoperoxidase Labeling

Studies in our laboratory are involved in evaluating the structural and functional organization of the mammalian cell nucleus. Since several major classes (U1, U2, U4/U6, U5) of small nuclear ribonucleoprotein particles (snRNPs) play a crucial role in the processing of pre-mRNA molecules, we have been interested in the localization of these particles within the cell nucleus. Using pre-embedding immunoperoxidase labeling combined with 3-dimensional reconstruction, we have recently shown that nuclear regions enriched in snRNPs form a reticular network within the nucleoplasm which extends between the nucleolar surface and the nuclear envelope. In the present study we were inte rested in extending these nuclear localizations using cell preparation techniques which avoid slow penetration of fixatives, chemical crosslinking of potential antigens and solvent extraction. CHOC 400 cells were cryofixed using a CF 100 ultra rapid cooling device (LifeCell Corp.). After cryofixation cells were molecular distillation dried, vapor osmicated, in filtra ted in 100% Spurr resin in vacuo and polymerized in molds a t 60°C. Using this procedure we were able to evaluate the distribution of snRNPs in resin embedded cells which had not been chemically fixed, incubated in cryoprotectants or extracted with solvents.

An Automated Procedure for the Determination of Ammonia in Tobacco

1972 ◽  
Vol 6 (4) ◽  
Author(s):  
P.F. Collins ◽  
W.W. Lawrence ◽  
J.F. Williams
Keyword(s):  
Standard Deviation ◽  
Relative Standard Deviation ◽  
Distillation Method ◽  
Relative Standard ◽  
Tobacco Sample ◽  
Automated Determination

AbstractA procedure for the automated determination of ammonia in tobacco has been developed. Ammonia is extracted from the ground tobacco sample with water and is determined with a Technicon Auto Analyser system which employs separation of the ammonia through volatilization followed by colourimetry using the phenate-hypochlorite reaction. The procedure has been applied to a variety of tobaccos containing from 0.02 to 0.5 % ammonia with an overall relative standard deviation of 2 %. The accuracy of the procedure as judged by recovery tests and by comparison to a manual distillation method is considered adequate

The Influence of Entrainment Separator on the Process of Molecular Distillation

1998 ◽  
Vol 33 (1) ◽  
pp. 83-96 ◽  
Author(s):  
Juraj Lutišan ◽  
Miroslav Micov ◽  
Ján Cvengroš
Keyword(s):  
Molecular Distillation

Trends and Applications of Molecular Distillation in Pharmaceutical and Food Industries

2021 ◽  
pp. 1-18
Author(s):  
Engy A. Mahrous ◽  
Mohamed A. Farag
Keyword(s):  
Molecular Distillation ◽  
Food Industries
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