Potassium-argon analysis by stqwise dissolution provides a way to measure in detail the distribution of argon isotopes and potassium in rock salt. The method can be used for salt that contains only trace amounts of potassium, because the potassium and argon in detrital silicates within the salt are not released during the dissolution. Water may be used as the solvent when relatively large a...

Designing distributed databases is an issue of paramount importance for executing transactions eeciently. The distributed database design process consists of three phases namely, the initial design, redesign and materialization of the redesign. The initial design consists of a fragmentation and an allocation scheme which minimize the irrelevant data access cost and data transfer cost. Over a pe...

The transmission TrG(v) of a vertex v connected graph G is the sum distances between and all other vertices in G. stepwise irregular (STI) if |TrG(u) ? TrG(v)| = 1 holds for each edge uv E(G). In this paper, extremal results on STI graphs with respect to size different metric properties are proved. Two families appear cases, balanced complete bipartite odd order so called hatted cycles.

Silver K edge extended X-ray absorption fine structure (EXAFS) spectroscopy of films containing silver behenate (AgBeh) in the unprocessed, fully processed, and step-processed states has been performed. The results of the EXAFS analysis indicate that the intensity for the real-space peak for the Ag-O distance (~2.3 Å) decreases while the real-space peak for the AgAg distance (~2.9 Å) grows with...

Paddystem borer (Scirpophaga incertulas) is a serious rice pest. The damaged plants wither into dead tassel or white tassel. Such damage leads to decreased in rice production. In order to control the damages of paddystem borer efficiency, it is very important to analyze and study the regulation of population dynamics and the related factors affecting the development. This investigated the popul...

Quantification is well known to be a major ob­ stacle in the construction of a probabilistic net­ work, especially when relying on human experts for this purpose. The construction of a qualitative probabilistic network has been proposed as an initial step in a network's quantification, since the qualitative network can be used to gain prelimi­ nary insight in the projected network's reasoning b...