Abstract The aim of this study is to gain specific information on the water vapour interaction with archaeological and ethnographic birch bark. Water involved in a number curative preventive conservation measurements e.g. when re-shaping or drying objects defining climate directives for long-term storage. We measured sorption isotherm archaeological, contemporary bark at different temperatures ...

OBJECTIVE Osmotic gradient-induced volume change and sarcolemmal water permeability of cardiac myocytes were evaluated to characterize the mechanism of water flux across the plasma membranes. METHODS Cell surface dimensions were measured from isolated guinea-pig and rat ventricular myocytes by digital videomicroscopy, and membrane hydraulic conductivity (L(p)) was obtained by analyzing the ti...

The pathways and identification of cell injury and cell death are of key importance to the practice of diagnostic and research toxicologic pathology. Following a lethal injury, cellular reactions are initially reversible. Currently, we recognize two patterns, oncosis and apoptosis. Oncosis, derived from the Greek word "swelling," is the common pattern of change in infarcts and in zonal killing ...

A carboxymethyl cellulose (CMC)/polyethyleneimine (PEI) hybrid hydrogel was successfully prepared under green processing conditions. The CMC and PEI formed a polyelectrolyte complex, the three-dimensional (3D) network structure hardened by chemical crosslinking, resulting in suitable properties. In CMC/PEI hydrogel, surface charge easily switched according to pH change, swelling contraction rev...

Cell death can proceed via at least two distinct pathways, apoptosis and oncosis. Apoptosis is an energy-dependent process characterized morphologically by cell shrinkage, whereas oncosis is defined as a prelethal pathway leading to cell death associated with cellular swelling, organelle swelling, and increased membrane permeability. In this study, we found that overexpression of chromatin modi...

Astrocytes, the major type of non-neuronal cells in the brain, play an important functional role in extracellular potassium ([K(+)](o)) and pH homeostasis. Pathological brain states that result in [K(+)](o) and pH dysregulation have been shown to cause astrocyte swelling. However, whether astrocyte volume changes occur under physiological conditions is not known. In this study we used two-photo...

Plant stems show reversible diurnal fluctuation and irreversible growth, both related to plant water status. The stem diameter shrinkage swelling are caused by a depletion refilling of the plant’s internal storage pools, while growth occurs when turgor pressure exceeds certain threshold value. For this reason, measurements provide useful tool assess In study, use continuous detect atmospheric s...

In this research, bentonite soil was stabilized with cement and epoxy resin additives by gradually increasing the ratio of to water withstand six successive wetting/drying (W/D) cycles. Unconfined compressive strength (UCS) tests were performed on samples after curing 24 h soaking in third sixth The swelling–shrinkage potential evaluated indirectly analyzing its stress–strain behavior. results ...

Background and Aim: Minimizing the polymerization shrinkage of composite resins is a critical goals in composite restorations. Many factors affect polymerization shrinkage. This study aimed to evaluate the effect of composite resin shade on polymerization shrinkage. Materials and Methods: In this in vitro study, 14 composite discs measuring 1.5×8 mm were fabricated. The samples were prepared u...