In this paper we propose a new data structure, called the Bkd-tree, for indexing large multi-dimensional point data sets. The Bkd-tree is an I/O-efficient dynamic data structure based on the kd-tree. We present the results of an extensive experimental study showing that unlike previous attempts on making external versions of the kd-tree dynamic, the Bkd-tree maintains its high space utilization...

co(ii) and cu(ii) promoted base hydrolysis of 2-cyano, 1, lo-phenanthroline was studied. at 298.2°k, cu(ii) reaction is more efficient (by a factor of 20) than either co(ll) and its analogues ni(ii) in promoting base hydrolysis.

One concern about using transgenic plants is the genetic variation that occurred from theirs tissue culture and regeneration. Molecular markers are an important element for efficient and effective determination of genetic variation. The present work was carried out to assess the genetic uniformity of transgenic cottons (Bt and chitinase lines), using RAPD, ISSR molecular markers and SDS-PAGE an...

In vertebrates, nerve muscle communication is mediated by the release of the neurotransmitter acetylcholine packed inside synaptic vesicles by a specific vesicular acetylcholine transporter (VAChT). Here we used a mouse model (VAChT KD(HOM)) with 70% reduction in the expression of VAChT to investigate the morphological and functional consequences of a decreased acetylcholine uptake and release ...

Metal ions play many critical roles in biology, as structural and catalytic cofactors, cell regulatory signalling elements. The metal–protein affinity, expressed conveniently by the metal dissociation constant, KD, describes thermodynamic strength of a interaction is key parameter that can be used, for example, to understand how proteins may acquire metals identify dynamic elements (e.g. cofact...

In this paper we propose a new index structure, called the Bkd-tree, for indexing large multi-dimensional point data sets. The Bkdtree is an I/O-efficient dynamic data structure based on the kd-tree. We present the results of an extensive experimental study showing that unlike previous attempts on making external versions of the kd-tree dynamic, the Bkd-tree maintains its high space utilization...