CD43 is an abundant, heavily glycosylated molecule expressed specifically on the surface of leukocytes and platelets. When leukocytes are at rest, CD43 acts to prevent both homotypic and heterotypic interactions. However, during leukocyte activation CD43 expression is repressed, facilitating the intercellular contact required for chemotaxis, phagocytosis, aggregation, adhesion to endothelium, a...

Polyurethane (PUR) foams are used in various industrial applications, including vibration damping and noise reduction. Because the effective mechanical properties needed for engineering design process, this work presents a method to measure dynamic Poisson's ratio typical range of sound frequencies. A hydraulic pulse testing machine is apply harmonic displacement excitation cylindrical specimen...

reaction to fire of fire-retarded rigid pur foams and two types of metal faced rigid polyurethane foam core sandwich panel was evaluated by using cone calorimeter test method. the tests were carried out in various radiative heat fluxes from 15 to 75 kw/m2. the radiation rate effect on reaction to fire parameters, including time to ignition (tti), peak of heat release rate (prhr), total heat rel...

Associations among hip motions, knee abduction and internal rotation motion during a drop vertical jump (DVJ), which increases the risk of anterior cruciate ligament injury, remain unclear. The pur...

Bacillus subtilis PurR represses transcription of several genes involved in purine synthesis, metabolism, and transport and cofactor synthesis. PurR binds specifically to DNAs containing an inverted repeat of a 14-nucleotide "PurBox" located in the upstream control regions of genes in the PurR regulon. Further biochemical investigation of the interaction of PurR with a series of shortened upstr...

Injectable and settable bone grafts offer significant advantages over pre-formed implants due to their ability to be administered using minimally invasive techniques and to conform to the shape of the defect. However, injectable biomaterials present biocompatibility challenges due to the potential toxicity and ultimate fate of reactive components that are not incorporated in the final cured pro...

Armitt & Woods (1970) and Lomax & Woods (1973) reported the isolation of a series of mutants of Saccharomyces cerevisiae that did not require purines for growth, but excreted substantial amounts of purines into the growth medium. Genetic studies have assigned these yeast strains to six unlinked genes (purl, pur2, pur3, pur4, pur.5, pzv6), of which one, pur6, had both recessive and dominant (PUR...

ions over version control have been built in various contexts. The wider context of Software Configuration Management (scm) has seen research on establishing general principles of change in software, but not with the intent of building an interface for multiple existing vcss. Some research in the field of version control exists that aims to provide an abstraction for version control concepts. F...