Performance of small CST column gas generation test in radiation field

The primary purpose of a bell jar is to collect and measure out gassing from a container (e.g., food can) of plutonium bearing materials to evaluate potential pressurization within a shipping package containment vessel. The bell jar allows for testing of the actual cans to be shipped without repackaging or taking samples of the materials. Pressurization of the bell jar can be readily extrapolated to the conditions inside the shipping container containment vessel during a shipment. Bell jar testing is being used in conjunction with current plutonium surveillance techniques (lid deflection measuring) to demonstrate that the cans bearing plutonium material may be shipped safely across the Savannah River Site for processing. Statistical sampling of similar materials leverages the testing such that only population subsets need be tested. The pressurization (or depressurization) measured in the bell jar to date has been very small and of no concern from a shipping perspective.

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Experimental Studies on a Recombinant Hirudin, CGP 39393

Thrombosis and Haemostasis ◽

10.1055/s-0038-1648151 ◽

1991 ◽

Vol 65 (04) ◽

pp. 355-359 ◽

Cited By ~ 12

Author(s):

E Gray ◽

J Watton ◽

S Cesmeli ◽

T W Barrowcliffe ◽

D P Thomas

Keyword(s):

Thrombin Generation ◽

Bleeding Time ◽

Thrombus Formation ◽

Experimental Studies ◽

Venous Stasis ◽

Antithrombotic Agent ◽

Recombinant Hirudin ◽

Excessive Bleeding ◽

Generation Test

SummaryThe in vitro anticoagulant activities of recombinant desulphatohirudin (r-hirudin) were studied in the activated partial thromboplastin time (APTT) and the thrombin generation test : systems. In the APTT at concentrations below 5 μg/ml, r-hirudin showed a dose-response curye. At concentrations above 5 μg/ml, the plasma became unclottable, but in the thrombin generation test , at least 10 μg/ml of r-hirudin was required for full inhibition of thrombin generation. The antithrombotic effect was assessed using a rabbit venous stasis model; 150 μg/ml r-hirudin completely prevented thrombus formation at 10 and 20 min stasis. At antithrombotic dose, the mean bleeding time ratio measured in a rabbit ear template model, was not prolonged over control values. At higher doses, the bleeding time ratios were higher than those observed for the same dosage of heparin. These data indicate that while r-hirudin is an effective antithrombotic agent, antithrombotic doses have to be carefully titrated to avoid excessive bleeding.

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The Effect of Adrenaline Infusions on Blood Coagulation in Normal and Haemophilia B Dogs

Thrombosis and Haemostasis ◽

10.1055/s-0038-1649437 ◽

1966 ◽

Vol 15 (03/04) ◽

pp. 349-364 ◽

Cited By ~ 5

Author(s):

A.H Özge ◽

H.C Rowsell ◽

H.G Downie ◽

J.F Mustard

Keyword(s):

Body Weight ◽

Factor Viii ◽

Factor Ix ◽

Clotting Factor ◽

Blood Ph ◽

Order Of Magnitude ◽

Dose Dependent ◽

Generation Test ◽

Plasma Activity

SummaryThe addition of trace amounts of adrenaline to whole blood in plasma in vitro increased factor VIII, factor IX and whole plasma activity in the thromboplastin generation test. This was dose dependent.Adrenaline infusions less than 22 (μg/kg body weight in normal dogs accelerated clotting, increased factor IX, factor VIII and whole plasma activity in the thromboplastin generation test and caused a fall in blood pH. In a factor IX deficient dog, there was no increase in factor IX activity. After adrenaline infusions, however, the other changes occurred and were of the same order of magnitude as in the normal. Adrenaline in doses greater than 22 μg/kg body weight did not produce as great an effect on clotting in normal or factor IX deficient dogs. The platelet count in the peripheral blood was increased following the infusion of all doses of adrenaline. These observations suggest that the accelerating effect of adrenaline on clotting is not mediated through increase in activity of a specific clotting factor.

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Spontaneous Haemophilia in a Female

Thrombosis and Haemostasis ◽

10.1055/s-0038-1654520 ◽

1960 ◽

Vol 04 (03) ◽

pp. 369-375 ◽

Cited By ~ 7

Author(s):

E. H Braun ◽

David B. Stollar

Keyword(s):

Family History ◽

Bleeding Time ◽

Dental Extraction ◽

White Girl ◽

Complete Family ◽

Normal Limits ◽

Sex Chromatin ◽

History Of ◽

Generation Test

SummaryA case of haemophilia in a young white girl is described. There was a history of bleeding from birth. The thromboplastin generation test was grossly abnormal and A. H. G. levels were below 1%. Bleeding time and capillary morphology was within normal limits. Dental extraction after transfusion caused almost uncontrollable haemorrhage.A complete family history was obtained for four generations. There was no case of a “bleeder” amongst these.The girl’s apparent sex was confirmed by sex chromatin studies.

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