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Перевод: aggregation

[существительное]
агрегация ; соединение частей; скопление; конгломерат ; масса ; собирание; агрегат

Тезаурус:

1. Aggregation in vitro , which is an active process (Vargaftig et al, 1981), is dependent on pH, temperature, mechanical stirring, calcium-ion concentration, the concentration of platelets in the PRP and the time elapsed between the performance of the aggregation tests and the preparation of the PRP (Mills, 198 1).
2. The earliest finding is the platelet adhesion to collagen fibres followed by aggregation and formation of a platelet plug.
3. Platelet aggregation in whole blood
4. However, Moncada et al (1976a) demonstrated that endothelial cells were capable of producing a potent anti-platelet aggregatory agent and it was subsequently suggested that continuous production of this substance, now called prostacyclin, explained the apparent protection against adhesion and aggregation conferred by the normal endothelium (Moncada Vane, 1979).
5. Although it was beneficial both to optimal planning and the creation of much-needed accommodation to maximise the number of rooms that could be sited internally, the aggregation of these spaces was still inadequate to "fill up" the middle of the broad interior, and in the flour-mill section of the building the residual central space was devoted to a full-height internal courtyard or "atrium" which rises through seven storeys to terminate in a glass-roofed conservatory.
6. At low concentrations of collagen, platelet aggregation is dependent on the release of arachidonic acid from platelet membrane phospholipid and the subsequent metabolism of arachidonic acid via the prostaglandin pathway (Packham, 1976).
7. In response to the agonist arachidonic acid (1 mM) which acts via the prostaglandin pathway, and collagen (1 g/ml) which acts partly directly by adhesion and also via prostaglandin synthesis, whole blood samples from the diabetic subjects showed increased platelet aggregation.
8. Platelet aggregation
9. The majority of reports of platelet-aggregation studies in diabetics without clinical evidence of vascular complications have found increased aggregation to various agonists, particularly ADP and collagen (Sagel et al, 1975; Halushka et al, 1971; Stuart et al, 1979; Halushka et al, 1981 a; Silberbauer et al, 1981; Janka et al, 1983).
10. Defreyn et al (1981) have demonstrated a deficiency of thromboxane formation and platelet aggregation in platelets from a patient with a familial bleeding tendency, thus emphasizing the importance of thromboxane production in the physiology of platelet function.
11. The mechanisms by which platelet sticks to platelet during aggregation are not fully understood.
12. To do this successfully the choreographer must be able to select from the "aggregation of objects" only those which are appropriate to the ballet in hand.