Incremental Evolution of Cellular Automata for Random Number Generation Sheng-Uei Guan and Shu Zhang Department of Electrical & Computer Engineering National University of Singapore 10 Kent Ridge Crescents, Singapore 119260 {eleguans, engp9594}@nus.edu.sg Abstract Cellular automata (CA) have been used in pseudorandom number generation for over a decade. Recent studies show that controllable CA ...

hosen ciphertext security (CCA security)hosen ciphertext security (CCA security)C is now a widely accepted necessary security notion for public key encryption. CCA secure public verifiable public key encryption has many applications such as threshold public key encryption and proxy re-encryption etc. Furthermore, these years “random oracle model” has seen risen criticize by many cryptographers....

We investigated the anti-cholangiocarcinoma effect of α-mangostin from Garcinia mangostana pericarp extract (GM) in a human cholangiocarcinoma (CCA) cell line and a hamster CCA allograft model. In vitro, human CCA cells were treated with GM at various concentrations and for different time periods; then cell-cycle arrest and apoptosis were evaluated using flow cytometry, and metastatic potential...

We theoretically characterized the diffraction properties of both closed-packed and non-closed-packed crystalline colloidal array (CCA) photonic crystals. A general theory based on single-scattering kinematic approach was developed and used to calculate the diffraction efficiency of CCA of different sphere diameters at different incident light angles. Our theory explicitly relates the scatterin...

BACKGROUND There are few molecular markers known to predict cholangiocarcinoma (CCA) prognosis. Smad7 has a certain relationship with epithelial-mesenchymal transition (EMT), but its relevance to CCA in unclear. Therefore expression and clinical significance of Smad7 in CCA was the focus of this study. METHODS Expression of Smad7, E-cadherin and vimentin was assessed in 41 patients with CCA b...

In contrast to Escherichia coli, where all tRNAs have the CCA motif encoded by their genes, two classes of tRNA precursors exist in the Gram-positive bacterium Bacillus subtilis. Previous evidence had shown that ribonuclease Z (RNase Z) was responsible for the endonucleolytic maturation of the 3' end of those tRNAs lacking an encoded CCA motif, accounting for about one-third of its tRNAs. This ...

BACKGROUND Primary liver cancer included hepatocellular carcinoma (HCC) and cholangiocarcinoma (CCA), is the leading cancer with high mortality in Thailand. We aim to evaluate the overall survival and predictor of mortality in patients with HCC and CCA. MATERIAL AND METHOD We reviewed medical records of 786 patients with liver mass between July 2007 and June 2010, 287 patients were HCC and 44...

The Escherichia coli cca gene which encodes the enzyme tRNA nucleotidyltransferase has been cloned by taking advantage of its proximity to the previously cloned dnaG locus. A series of recombinant bacteriophages, spanning the chromosomal region between the dnaG and cca genes at 66 min on the E. coli linkage map, were isolated from a lambda Charon 28 partial Sau3A E. coli DNA library using recom...

Rapid enterovirus detection is important for decisions about antibiotic administration and length of hospital stay. The efficacy of rapid antigen detection-cell culture amplification (Ag-CCA) was evaluated with monoclonal antibodies (MAbs) 5-D8/1 (DAKO) and Pan-Enterovirus clone 2E11 (Chemicon) with 10 poliovirus, echovirus, and coxsackievirus type A and B stock isolates and College of American...

Children's exposure to arsenic and chromium from playground equipment constructed with chromated copper arsenate (CCA)-treated wood is a potential concern because of children's hand-to-mouth activity. However, there exists no direct measure of Cr levels on the hands of children after playing in such playgrounds. In this study we measured both soluble and total Cr on the hands of 139 children pl...