Drying Stress
Drying Stress - Related Videos
01:30
Dry Friction
0 Views •
2023
Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible. To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
01:21
Drying Shrinkage
0 Views •
2024
When hardened concrete is exposed to air with a relative humidity of less than 100 percent, it begins to lose the free water within its capillaries. As this water evaporates, the water initially adsorbed onto the calcium silicate hydrates migrates towards these now empty spaces and eventually evaporates as well. Over time, as more water leaves, the volume of the concrete decreases, a phenomenon known as drying shrinkage. A portion of this drying shrinkage can be reversed; if the concrete is...
09:39
The Trier Social Stress Test Protocol for Inducing Psychological Stress
0 Views •
Cited by 251 •
2011
This article describes a protocol for inducing psychological stress in participants, which enables researchers to measure psychological, physiological and neuroendocrine responses to stress within single participants or between groups.
08:00
Measuring and Modeling Contractile Drying in Human Stratum Corneum
0 Views •
Cited by 2 •
2017
This article describes a method of quantifying the dynamic drying behavior and mechanical properties of stratum corneum by measuring spatially resolved in-plane drying displacements of circular tissue samples adhered to an elastomer substrate. This technique can be used to measure how different chemical treatments alter drying and tissue mechanical properties.
08:14
Modeling Social Stress
0 Views •
2023
Stress negatively affects our quality of life. In particular, some individuals experience social stress when placed in a social environment that they are unfamiliar with or have difficulty adjusting to. Since it is hard to examine mechanisms of social stress in humans, modeling this condition in animals may help scientist in developing new therapies for treating this commonly encountered problem. This science education video begins by discussing the known anatomy and physiology behind stress...
FAQs
As water is removed, dissolved solutes become more concentrated, changing osmotic balance around and within biological structures. These shifts can impose increasing stress on cells, membranes, proteins, and material components before visible damage occurs. In bioengineering, tracking this changing chemical environment helps explain why drying conditions influence whether a preserved system remains structurally functional after storage.
Rehydration can intensify damage because water returns to structures that have already experienced altered organization and concentrated solutes. Membrane leakage and oxidative damage may increase during this transition, rather than occurring only during water loss. Consequently, preservation performance depends on both the drying phase and the conditions used to restore water to cells, tissues, or biologic materials.
Protective sugars, polymers, and the rate at which water is removed can influence the extent of structural disruption. Rehydration conditions also affect recovery because they determine how quickly damaged or reorganized components encounter water again. Adjusting these variables gives bioengineers practical ways to reduce injury and improve the stability of cells, proteins, tissues, and other biological systems.
Protective sugars and polymers are investigated as formulation components that help biological systems withstand water loss and subsequent rehydration. Their role is evaluated alongside drying rate and rehydration conditions, rather than as an isolated solution. This combined approach supports the development of dry-stable vaccines, biologics, preserved cells, tissues, and engineered biomaterials with improved structural preservation.
Lyophilization protocol design must account for controlled drying, formulation with protective materials, and the conditions used during rehydration. These elements are connected because damage may arise from concentrated solutes during water loss or from leakage and oxidative effects when water returns. Careful optimization aims to preserve biological organization while supporting useful recovery after the product is rehydrated.
This research supports dry-stable vaccines and biologics, preservation of cells and tissues, and the design of engineered biomaterials. The central practical goals are greater stability during storage, longer storage life, and better recovery after drying. Studying these outcomes also helps researchers compare how protective formulations, drying rates, and rehydration conditions perform across different biological systems.