Desiccation tolerance is the ability of orthodox seeds to achieve equilibrium with atmospheric relative humidity and to survive in this state. Understanding how orthodox seeds respond to dehydration is important for improving quality and long-term storage of seeds under low temperature and drought stress conditions. Long-term storage of seeds is an artificial situation, because in most natural ...

P. Pokorny, M. Novak, L. Mastny Institute of Chemical Technology, Prague, Czech Republic P. Szelag Pragochema Prague, Department of Research of Surface Treatment of Metals, Prague, Czech Republic V. Brozek Institute of Plasma Physics ASCR Prague, Czech Republic The work was validated thermal stability of zinc, manganese and tri-cations phosphate coatings on steel, made from commercial phosphati...

Familial pseudohyperkalemia is a "leaky red blood cell" condition in which the cells show a temperature-dependent loss of potassium (K) from red blood cells when stored at room temperature, manifesting as apparent hyperkalemia. The red blood cells show a reduced lifespan in vivo but there is no frank hemolysis. Studies of cation content and transport show a marginal increase in permeability at ...

In situ elevated temperature investigations using fly ash based geopolymers filled with alumina aggregate were undertaken. Compressive strength and short term creep tests were carried out to determine the onset temperature of viscous flow. Fire testing using the standard cellulose curve was performed. Applying a load to the specimen as the temperature increased reduced the temperature at which ...

This paper presents numerical calculations of the temperature field obtained for the case of a neonate placed under a radiant warmer. The results of the simulations show a very non-uniform temperature distribution on the skin of the neonate, which may cause increased evaporation leading to severe dehydration. For this reason, we propose some modifications on the geometry and operation of the ra...

Microbe-mineral and -metal interactions represent a major intersection between the biosphere and geosphere but require high-resolution imaging and analytical tools for investigation of microscale associations. Electron microscopy has been used extensively for geomicrobial investigations, and although used bona fide, the traditional methods of sample preparation do not preserve the native morpho...

This research focuses on deducing the kinetic mechanism for biodiesel production catalyzed by a CaO nanocatalyst derived from waste cockle shells via thermal hydration–dehydration treatment. In addition, preparation method hydration–dehydration-related parameters (hydration duration, recalcination temperature, and duration) was studied optimized. The transesterification reaction followed Langmu...

CBF (C-repeat Binding Factor) transcription factors are part of the AP2/ERF (Apetala2-ethylene responsive factor) domain family of DNA-binding proteins that recognize a C-repeat response cis-acting element that regulates a number of cold-responsive genes (CBF regulon). Induction of CBF gene expression by low temperature in Arabidopsis has been shown to be gated by a circadian clock. In peach (P...

Three peroxidase (POD) cDNAs were isolated from dehydration-treated fibrous roots of sweetpotato (Ipomoea batatas) plant via the screening of a cDNA library, and their expressions were assessed to characterize functions of each POD in relation to environmental stress. Three PODs were divided into two groups, designated the basic PODs (swpb4, swpb5) and the anionic PODs (swpa7), on the basis of ...