INTRODUCTION Dehydration may increase the risk for decompression sickness (DCS). Since DCS most probably is caused by endogenous gas phase formation, we hypothesized that decompression will induce more venous gas emboli (VGE) in dehydrated rats compared to controls. METHODS Two groups of rats were pressurized to 0.5 MPa (5 ATA) on heliox for 16 h, and thereafter decompressed to atmospheric pr...

Green fluorescent protein (GFP)-based timelapse live-imaging is a powerful technique for studying the genetic regulation of dynamic processes such as tissue morphogenesis, cell-cell adhesion, or cell death. Drosophila embryos expressing GFP are readily imaged using either stereoscopic or confocal microscopy. A goal of any live-imaging protocol is to minimize detrimental effects such as dehydrat...

The losses in chloroplast capacity to fix CO(2) when photosynthesis is reduced at low leaf water potential (psi(1)) have been proposed to result from photoinhibition. We investigated this possibility in soil-grown sunflower (Helianthus annuus L. cv IS894) using gas exchange techniques to measure directly the influence of light during dehydration on the in situ chloroplast capacity to fix CO(2)....

This article describes the effect of particle size distribution, pellet size and dehydration techniques on the improvement of physical properties of the pelleted feed products. It is shown that dehydration with vacuum has positive effect on durability when compared to air technique. Products volume and particle size distribution also had an effect on physical properties. INTRODUCTION In porous ...

Objectives . To study the possibility of combining acid-catalytic cyclohexanol dehydration and alkoxycarbonylation formed cyclohexene with carbon(II) oxide in a single reactor order to achieve high yields target cyclohexyl cyclohexanecarboxylate product under mild conditions using Pd(OAc) 2 –PPh 3 – p -toluenesulfonic acid catalytic system. Methods The combined process took place toluene medium...

The adsorption and separation properties of 3A zeolite are investigated by using Grand Canonical Monte Carlo (GCMC) simulation. To obtain the adsorption isotherms of water, methyl mercaptan, and methane on 3A zeolite, COMPASS Force Filed is used. The adsorption isotherms of the pure components and the ternary mixtures of water, methyl mercaptan, and methane on 3A zeolites are calculated. The Si...

The leaf is a hydraulic bottleneck, accounting for a large part of plant resistance. Thus, the leaf hydraulic conductance (K(leaf) ) is of key importance in determining stomatal conductance (g(s) ) and rates of gas exchange. Previous studies showed that K(leaf) is dynamic with leaf water status and irradiance. For four species, we tested the combined impacts of these factors on K(leaf) and on g...

For many years the dehydration of 2-methylcyclohexanol to a mixture of alkenes has been carried out in college organic chemistry labs to demonstrate the application of Zaitzev’s rule and the occurrence of the E1 reaction mechanism in alcohol dehydration reactions. In 1994 David Todd, then a chemistry professor at Pomona College, was distilling the product alkenes out of the reaction mixture whe...

Storage methods are important to preserve the viability and biochemical characteristics of microbial cultures between experiments or during periods when bioreactors are inactive. Most of the research on storage has focused on isolates; however, there is an increasing interest in methods for mixed cultures, which are of relevance in environmental biotechnology. The purpose of this study was to i...