scholarly journals Deep Freezing of Boar Semen I. Effects of Diluent Composition, Protective Agents, and Method of Thawing on Survival of Spermatozoa

1973 ◽  
Vol 26 (1) ◽  
pp. 219 ◽  
Author(s):  
S Salamon ◽  
I Wilmut ◽  
C Polge
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Factorial Experiments ◽  
Protective Agents ◽  
Deep Freezing ◽  
Boar Semen ◽  
Boar Spermatozoa

A series of factorial experiments was conducted to examine the effects of sugars and polyols (inositol, dulcitol), glycerol, low molecular weight polyols and cell "non-permeating" agents as cryoprotectives, and method of thawing on survival of boar spermatozoa after freezing by the pellet method.

scholarly journals Deep Freezing of Boar Semen II. Effects of Method of Dilution, Glycerol Concentration, and Time of Semen-Glycerol Contact on Survival of Spermatozoa

1973 ◽  
Vol 26 (1) ◽  
pp. 231 ◽  
Author(s):  
I Wilmut ◽  
S Salamon ◽  
C Polge
Keyword(s):  
Glycerol Concentration ◽  
Factorial Experiments ◽  
Deep Freezing ◽  
Boar Semen ◽  
Boar Spermatozoa

Five factorial experiments were conducted to examine the effects of glycerol concentration and processing procedures prior to freezing on the revival of boar spermatozoa upon thawing.

Deep Freezing of Boar Semen III. Effects of Centrifugation, Diluent and Dilution Rate, Pellet Volume, and Method of Thawing on Survival of Spermatozoa

1973 ◽  
Vol 26 (1) ◽  
pp. 239 ◽  
Author(s):  
S Salamon
Keyword(s):  
Dilution Rate ◽  
Factorial Experiments ◽  
Deep Freezing ◽  
Boar Semen ◽  
Boar Spermatozoa

Five factorial experiments were conducted to examine the effects of centrifugation of semen, diluent and dilution rate, pellet volume, and method of thawing on the survival of boar spermatozoa after freezing by the pellet method.

scholarly journals THE ABSORPTION BY BOAR SPERMATOZOA OF ZINC BOUND TO LOW MOLECULAR WEIGHT LIGANDS

Reproduction ◽  
1975 ◽  
Vol 45 (3) ◽  
pp. 421-426 ◽  
Author(s):  
J. C. BOURSNELL ◽  
E. A. NOBLE
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Boar Spermatozoa

Effect of Composition of Tris-based Diluent on Survival of Boar Spermatozoa following Deep Freezing

1974 ◽  
Vol 27 (5) ◽  
pp. 485 ◽  
Author(s):  
D Visser ◽  
S Salamon
Keyword(s):  
Acetic Acid ◽  
Egg Yolk ◽  
Factorial Experiments ◽  
Deep Freezing ◽  
Boar Spermatozoa

Six factorial experiments were conducted to examine the effects of concentrations of 2-amino-2-hydroxymethylpropane-l,3-diol (tris), sugars, erythritol, catalase, ethylenediaminetetra-acetic acid (EDTA), glycerol and egg yolk in the freezing diluent on the survival of boar spermatozoa after freeze-thawing.

A high-performance oil-free backing pump for electron microscopes

1978 ◽  
Vol 36 (1) ◽  
pp. 110-111
Author(s):  
G.K.W. Balkau ◽  
E. Bez ◽  
J.L. Farrant
Keyword(s):  
Molecular Weight ◽  
Electron Microscope ◽  
Hot Spots ◽  
High Performance ◽  
Carbonaceous Material ◽  
Contamination Rate ◽  
Low Molecular Weight ◽  
Principal Source ◽  
Rotary Pumps ◽  
Electron Microscopes

The earliest account of the contamination of electron microscope specimens by the deposition of carbonaceous material during electron irradiation was published in 1947 by Watson who was then working in Canada. It was soon established that this carbonaceous material is formed from organic vapours, and it is now recognized that the principal source is the oil-sealed rotary pumps which provide the backing vacuum. It has been shown that the organic vapours consist of low molecular weight fragments of oil molecules which have been degraded at hot spots produced by friction between the vanes and the surfaces on which they slide. As satisfactory oil-free pumps are unavailable, it is standard electron microscope practice to reduce the partial pressure of organic vapours in the microscope in the vicinity of the specimen by using liquid-nitrogen cooled anti-contamination devices. Traps of this type are sufficient to reduce the contamination rate to about 0.1 Å per min, which is tolerable for many investigations.

Low-molecular-weight heparin in the prevention and treatment of thromboembolic disorders

1998 ◽  
Vol 1 (5) ◽  
pp. 166-174 ◽  
Author(s):  
Evelyn R Hermes De Santis ◽  
Betsy S Laumeister ◽  
Vidhu Bansal ◽  
Vandana Kataria ◽  
Preeti Loomba ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight Heparin ◽  
Low Molecular Weight ◽  
Prevention And Treatment
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