Temporal aspects in crisis management and its implications on interface design for situation awareness.

Temporality should be considered in the design of information technology support for crisis management (CM), both because crises are dynamic events and because time is a part of situation awareness (SA). This study has used group interviews to explore how different temporal aspects of CM can be considered in CM design and how they can influence crisis managers SA. A prototype and a scenario were used as mediating materials.

13C-NMR study of 4-azasteroids in solution and solid state.

A group of biologically active 4-azasteroids was studied by 13C-NMR spectroscopy in solution and in the solid phase. A full assignment of signals in the spectra of samples in chloroform was performed for thirteen 4-azasteroids using two-dimensional techniques. Substituent and steric effects of a nitrogen atom, and their influence on chemical shifts of the neighboring carbon atoms are discussed.

[Polish hydroxyethyl starch preparation: a clinical study].

The 6% solution of hydroxyethyl starch (MS = 0.47-0.7, Mw = 120,000-220,000) prepared at the Department of Biochemistry, Institute of Haematology in Warsaw was administered in infusions to a group of surgical patients.

[Fate of C-14 labeled hydroxyethyl starch in mice].

Three preparations of hydroxyethyl starch having MS 0.55, 0.65 and 0.

[Erythrocyte freezing in the presence of hydroxyethyl starch].

Biochemical properties of erythrocytes frozen in the presence of hydroxyethyl starch (HES) as preserving substance produced in this country were assessed. Erythrocytes were frozen adding HES in 4 different concentrations. The most favourable results were obtained with erythrocytes subjected to the action of HES in 30% and 35% concentrations.

[Use of hydroxyethyl starch as a cryoprotective medium during platelet storage at low temperatures].

The effects of HES and HES + DMSO used as cryoprotective media for storage of human platelets in liquid nitrogen and vapor phase of liquid nitrogen were studied. Solution of 6% and 15% HES with molecular weight ranging from 65,000 to 250,000, and 10% DMSO were used. The criteria accepted for evaluation of the efficiency of these cryoprotective media were: 1.