B-trees and their variants are efficient data structures for finding records in a large collection (e.g., databases). The efficiency of B-trees increases when a number of users can manipulate the tree simultaneously. Many algorithms have been developed over the last three decades to achieve both concurrency and consistency in B-trees. However, current lock-based concurrency-control techniques l...

monoamine oxidase (ec, 1.4.3.4) or amine oxidoreductase catalyzes the oxidative deamination of biogenic amines. abnormal action of the monoamine oxidase b has been associated with neurological dysfunctions including parkinson´s disorder. monoamine oxidase b inhibitors divulged that these agents were effective in the therapeutic management of parkinson's disease. understanding the interaction of...

Consider the B-valued probability space (A, E,B), where A is a tracial von Neumann algebra. We extend the theory of operator valued free probability to the algebra of affiliated operators Ã. For a random variable X ∈ Ã we study the Cauchy transform GX and show that the von Neumann algebra (B ∪ {X}) ′′ can be recovered from this function. In the case where B is finite dimensional, we show that, ...

We describe b-functions of linear free divisors and use these results to prove that the logarithmic comparison theorem holds for Koszul free reductive linear free divisors exactly if they are (strongly) Euler homogeneous.

to survey the effects of nutritional and growth regulator components on adverse effects of recent consecutive droughts, an experiment was conducted on uniform grape trees (vitisviniferal.clv.'khalili') in bavanat and shiraz (akbar-abad) regions in 2010- 2011.trial was arranged in a randomized complete blockdesign (rcbd), with three replication and five trees per each plot. experimental treatmen...

Nickel and cadmium are heavy metals with some hazards for plant metabolism. The impacts of nickel chloride (0, 400 and 800 μM) in the presence of vitamin B complex (0, 30 and 60 ml from pharmacy commercial stock) and the impacts of cadmium chloride (0, 100, 200, 300, 400, 500 and 600 μl from 100 µM stock) in pot and cadmium nitrate (0, 100, 200, 400, 800, 1600 and 3200 μl from 100 µM stock) in ...

background: enzymes are well known as sensitive catalysts in the laboratory and industrial scale. to improve their properties and for using their significant potential in various reactions as a useful catalyst the stability of enzymes can often require improvement. enzymes immobilization on solid supports such as epoxy- functionalized ferric silica nanocomposite can be effective way to improve ...