Occupational radiation exposure from the space environment may increase cancer morbidity or mortality risk in astronauts. This risk may be influenced by other space fl ight factors including microgravity and e nvironmental contaminants. A Mars mission will not be fe asible unless improved shielding is developed or transit time is decreased. – Human Research Program Requirements Document, HRP-47...

the aim of this research was to study the relationships between presence of plant species and environmental factors in garizat rangelands of yazd province and providing their predictive habitat models. after delimitation of the study area, sampling was performed using randomized-systematic method. accordingly, vegetation data including presence and cover percentage were determined in each quadr...

iomarkers are measurable cells, proteins, and/or metabolic yproducts that represent, either directly or indirectly, one or ore processes in a defined biological system or disease tate (2). Because biomarkers reflect health and disease ccording to genetic makeup, gene–gene interactions, gene– nvironmental interactions, and a dynamic interface beween genotype–phenotype relationships (3), one coul...

nvironmental research is being pursued in several areas at APL to understand the science of atmospheric and space processes and apply that knowledge to fi nding technological solutions to problems of interest to our sponsors. Two areas are specifi cally addressed in this article: (1) atmospheric, oceanic, and littoral environment research as it affects input to radar propagation codes, and (2) ...

The cross plotting of rock properties for fluid and lithology discrimination was carried out in a Niger Delta oil field using well data from a given oil field. The data used for the analysis consist of suites of six wells. The reservoir was evaluated using gamma ray logs, volume of shale, resistivity and neutron porosity for well-02 and well-06. Sand lithology showed low gamma ray, high resisti...

This study focused on the effect of micro-credit on the profitability of crop production in Orhionmwon Local Government Area of Edo State, Nigeria. A sample size of 166 small-scale farmers was randomly selected from the farming communities in Orhionmwon Local Government Area. Ninety two (92) beneficiaries and 74 non-beneficiaries were randomly selected from the study area. A well-structured que...

The major needs in machining are high material removal rate, good work surface finish and low tool wear. These objectives can be achieved by reducing tool wear using proper cutting fluid during machining.The effect of some cutting fluids namely: Mentholated spirit, paraffin, and soluble oil on the flank wear of High-speed steel and carbide tipped tools by orthogonal cutting has been studied. Ce...

A Fuzzy based design for assessing failures of pipelines occasioned by third party in the Niger Delta Region of Nigeria has been proposed in this study. Twelve factors earlier identified by Ariavie et al (2010), were further grouped into four, viz : violence, desperation, misconduct and agricultural categories to allow for a less tedious rule base development. Each category has inputs (base inp...

The effects of heavy metals pollution on agricultural produce can not be over emphasize. To estimate the effect of heavy metal on pH and Cation Exchange Capacities of soil on incubation, relationships between availability of metals in soil after contamination were investigated for a range of soils and metals. Three concentrations (0 mg/kg, 2 mg/kg and 5 mg/kg) of lead and cadmium were added as ...