نتایج جستجو برای: Near Surface Sampler

تعداد نتایج: 865444  

Journal: :desert 2008
h. r. azimzadeh m. r. ekhtesasi h. gh. refahi h. rohipour m. gorji

wind erosion is a significant problem on 20 million ha of iran, especially in central plains and coastal areas. winderosion samplers, meteorological equipments and measurement procedure have been developed over the last twocenturies to measure the particles moving across the field in modes of creep, saltation and suspension. in recentresearch as the first technical measurement in iran, wind ero...

Journal: Desert 2008
H. Azimzadeh H. Refahi H. Rohipour M. Ekhtesasi M. Gorji

Wind erosion is a significant problem on 20 million ha of Iran, especially in central plains and coastal areas. Winderosion samplers, meteorological equipments and measurement procedure have been developed over the last twocenturies to measure the particles moving across the field in modes of creep, saltation and suspension. In recentresearch as the first technical measurement in Iran, wind ero...

Journal: :Journal of Geophysical Research 1969

2013
Timothy E. Payne Jennifer J. Harrison Catherine E. Hughes Mathew P. Johansen Sangeeth Thiruvoth Kerry L. Wilsher Dioni I. Cendón Stuart I. Hankin Brett Rowling Atun Zawadzki

Radioactive waste containing a few grams of plutonium (Pu) was disposed between 1960 and 1968 in trenches at the Little Forest Burial Ground (LFBG), near Sydney, Australia. A water sampling point installed in a former trench has enabled the radionuclide content of trench water and the response of the water level to rainfall to be studied. The trench water contains readily measurable Pu activity...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Journal: :The Annals of occupational hygiene 2006
F E Lindsay S Semple A Robertson J W Cherrie

There are currently no appropriate methods for measuring dermal exposure to volatile agents. To address this we have produced a prototype Institute of Occupational Medicine (IOM) dermal sampler consisting of an adsorbent sandwiched between a permeable membrane and an impervious backing. The concentration of solvent on the membrane surface may be estimated from the mass collected on the adsorben...

2014
Jenia A. M. Tufts Kathryn M. Meyer Michael Worth Calfee Sang Don Lee

A series of experiments was conducted to explore the utility of composite-based collection of surface samples for the detection of a Bacillus anthracis surrogate using cellulose sponge samplers on a nonporous stainless steel surface. Two composite-based collection approaches were evaluated over a surface area of 3716 cm2 (four separate 929 cm2 areas), larger than the 645 cm2 prescribed by the s...

Journal: :Journal of Geophysical Research 1967

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