A study was conducted to determine the effect of P fertilization on the Se concentration in alfalfa. Adding P to the soil increased the Se concentration in alfalfa grown in the greenhouse on six of 14 soils from the northwestern United States. The Se concentration increase in alfalfa resulting from P addition was noted on some alkaline and some acid soils. Phosphorus addition increased the avai...

Various 5-carboxamido-7-iodo-8-benzyloxyquinolines were synthesised via selective aminocarbonylation of 5,7-diiodo-8-benzyloxyquinoline in the presence of ‘in situ’ generated palladium(0) catalysts. Under similar conditions (50C, 80 bar CO), 5,7-bis(N-tert-butylglyoxylamido)8-hydroxyquinoline was obtained using tert-butylamine as N-nucleophile. The unprotected 5,7-diiodo8-hydroxyquinoline under...

In May 1975 Los Alamos Scientific Laboratory issued a preliminai.. report on a study of Fast Reactor Safety Test Facilities. The study addressed itself to three closely related tasks. 1. A review of the current understanding of fast reactor safety with the aim of identifying important areas of uncertainty which cannot be adequately resolved using analysis, out of pile and/or existing in-pile fa...

During platelet activation, arachidonic acid (AA) is released from membrane phospholipids and metabolized to thromboxane A2 (TXA2) through the actions of cyclooxygenase-1 (COX-1) TXA2 synthase. Note, binds receptor, causing shape change, secretion aggregation.1 Also, COX-1 (599aa; 70 kDa) has cyclooxygenase peroxidase activities it functionally active as a homodimer, with each monomer consistin...

Investigations on the chemical and microbial leaching of a Nigerian Iron-ore in sulphuric acid have been carried out. The influence of physico-chemical parameters such as acid concentration, temperature, particle size and stirring speed on the chemical dissolution of the ore was investigated. The dissolution rates are significantly influenced by the temperature and acid concentration while the ...

Tissue engineering has recommended the development of biomaterials for implantable porous scaffolds at the injured site, which temporarily acted as the supporting materials for ingrowths of the cells and degraded along with extra cellular matrix production, vascularization and tissue regeneration. Usually, three dimensional scaffolds play the most important role in the design of Tissue Engineer...

Deep Bark Canker (DBC), caused by the bacterium Brenneria rubrifaciens afflicts English walnut cultivars and is characterized by late onset of symptoms in trees greater than 15 years old. These symptoms include deep bleeding vertical cankers along the trunk and larger branches that exude a bacterial-laden reddish brown sap. B. rubrifaciens produces a unique water-soluble red pigment called rubr...

Hemoglobin (HB) indicates anemia level and by extension may reflect the nutritional level and perhaps the immunity of an individual. Some antiretroviral drugs like Zidovudine are known to cause anemia in people living with HIV/AIDS (PLWHA). A cross sectional study using demographic data and blood specimen from 218 female commercial sex workers attending antiretroviral therapy (ART) clinics was ...

In all species studied, fertilization induces intracellular Ca ([Ca]i) oscillations required for oocyte activation and embryonic development. This species-specific pattern has not been studied in the equine, partly due to the difficulties linked to in vitro fertilization in this species. Therefore, the objective of this study was to use intracytoplasmic sperm injection (ICSI) to investigate fer...

The formation of local denaturation zones (bubbles) in double-stranded DNA is an important example for conformational changes of biological macromolecules. We study the dynamics of bubble formation in terms of a Fokker-Planck equation for the probability density to find a bubble of size n base pairs at time t, on the basis of the free energy in the Poland-Scheraga model. Characteristic bubble c...