46 results found for water

Temperature responsive polymer is an interesting material that shows reversible hydration/dehydration behavior in water at 32C, termed as the lower critical solution temperature (LCST). In this video, temperature responsive block copolymers are focus....

Aquaporin channels allow water to rapidly cross cell membranes in all living organisms. AQP1 confers red cells and proximal renal tubules with high water permeability. Present in renal collecting duct, AQP2 is regulated by vasopressin, and human muta....

An interesting look at how the direction of water flow affects shell growth in barnacles.

Dr. Kroto talks about his favorite synthesis reaction in chemistry

Work Inspection in a Construction Process. The work inspection at Flat Roofs

Work Inspection in a Construction Process. The work inspection at Pitch Roofs

The association of DNA with water is known since the deciphering of its double helical structure by X-Ray diffraction in 1953 (Watson, Crick, Wilkins and Franklin). However the power of DNA for organizing water seems to go far beyond the direct fill....

Biological membranes define and compartmentalize the cells of higher organisms. Consisting of membrane proteins and lipids, they are basically impermeable for ions and polar substances, so that electric voltages (_membrane potentialsî) and substanc....

Aquaporin (AQP) water channel proteins enable high water permeability in certain biological membranes. Discovered in human red cells but expressed in multiple tissues, AQP1 has been thoroughly characterized and its atomic structure is known. Expres....

Biological research and medicine were transformed by the invention and improvement of the optical microscope. Since the early 1990s, there has been another revolution in optical imaging, and manipulation of individual biological molecules and bio-mo....

The epidemiology of Helicobacter pylori continues to be an area of discovery and controversy in the 21st century. The transmission of this bacterium from mother to child allows Helicobacter DNA to mimic the evolution of maternal mitochondria DNA. B....

There are numerous kinds of luminous organism on earth. Mysterious emission of light from them inspired the curiosity of mankind ever since the ancient times. In history, Raphael Dubois discovered luciferin and luciferase from one of them, a click ....