A green house field experiment of rice (Oryza sativa L) with arsenic amended irrigation water was conducted at Institute of Environmental Science of Rajshahi University to observe the trend of arsenic (As) accumulation into rice and soil. Sodium arsenate (Na2HAsO4) amended irrigation water (0.0, 0.1, 0.5, 1.0, 2.0 and 4.0 mg/l As) was used for cultivating a popular HYV-aman rice variety named B...

Fine-grain and coarse-grain computing architectures are evaluated with regard to a hardware implementation with optoelectronic interconnects. Three examples for fine-grain optoelectronic VLSI architectures are presented and their hardware requirements are specified. Furthermore technological aspects of a realisation of an optical interface with high density for fine-grain optoelectronic VLSI ar...

in this study we report the rock magnetic properties of surface soil samples and their spatialvariability from the northernmost district of kerala to understand pedogenic processes and soil erosion. themagnetic signal is mainly from fine grained pedogenic magnetite as other sources like anthropogenic andlithogenic magnetite, bacterial magnetite and greigite are absent. the surface soil samples ...

Within the parallel genetic algorithm framework, there currently exists a growing dichotomy between coarse-pain and fine-grain parallel architectures. This paper attempts to characterize the need for fine-grain parallelism. and to introduce and compare three models of fine-grain parallel genetic algorithms (GAS). The performance of the three models is examined on seventeen test problems and is ...

a nano/ultra-fine grain al-0.2wt% zr alloy was produced by accumulated roll bonding (arb) processafter 10 cycles. the fraction of high angle grain boundaries increased from 8% to 65.4% during 10passes during arb process. this alloy was subjected to tensile test at different temperatures (523,573and 623 k) and strain rates (0.1 and 0.01 s-1). the optimum condition of temperature and strain rate ...

Sparse matrix problems require a communication paradigm different from those used in conventional distributed-memory multiprocessors. We present in this paper how fine-grain communication can help obtain high performance in the experimental distributed-memory multiprocessor, EM-X, developed at ETL, which can handle fine-grain communication very efficiently. The sparse matrix kernel, Conjugate G...

Computer hardware is at the beginning of the multi-core revolution. While hardware at the commodity level is capable of running concurrent software, most software does not take advantage of this fact because parallel software development is difficult. This project addressed potential remedies to these difficulties by investigating graphical programming and fine-grain parallelism. A prototype sy...

Progress: We have been investigating the use of dynamic cache resizing techniques for energy reduction. The idea of cache resizing is to match the active cache size with the current program cache usage requirements. When the cache usage is small, we can turn off parts of the cache. Neither active switching energy nor static leakage energy is dissipated in the part of the cache that is turned of...

This paper presents a new version of ALFA VER92], a ne grain dataaow machine. This machine uses the static dataaow execution model and is constituted by 128 clusters; each cluster groups 128 identical Functional Units (FU) with homogeneous I/O conditions. The peculiarity of this machine is the possibility to map directly part of dataaow graph programs in hardware for the simple FU design VER94b...

This paper describes the findings of selenium measurement in three types of soil (semigley, pseudogley and hypogley) and in wheat grain cultivated in these types of soil in the vicinity of Koprivnica using hydrid atomic absorption spectrometry. The results showed relatively low selenium levels in all three types of soil (145-333 micrograms Se/kg dry weight) as well as the wheat grain (22-62 mic...