نتایج جستجو برای: elemental composition

تعداد نتایج: 276086  

Journal: :Bayero Journal of Pure and Applied Sciences 2011

Journal: :Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2005
Lucian Wielopolski Zhiguang Song Itzhak Orion Albert L Hanson George Hendrey

Monte Carlo codes are extensively used for probabilistic simulations of various physical systems. These codes are widely used in calculations of neutron and gamma ray transport in soil for radiation shielding, soil activation by neutrons, well logging industry, and in simulations of complex nuclear gauges for in soil measurements. However, these calculations are complicated by the diversity of ...

2010
Elizabeth Buescher Tilman Achberger Idris Amusan Anthony Giannini Cherie Ochsenfeld Ana Rus Brett Lahner Owen Hoekenga Elena Yakubova Jeffrey F. Harper Mary Lou Guerinot Min Zhang David E. Salt Ivan R. Baxter

Controlling elemental composition is critical for plant growth and development as well as the nutrition of humans who utilize plants for food. Uncovering the genetic architecture underlying mineral ion homeostasis in plants is a critical first step towards understanding the biochemical networks that regulate a plant's elemental composition (ionome). Natural accessions of Arabidopsis thaliana pr...

2004
Thomasin C. Miller George J. Havrilla

The analysis of the distribution of pharmaceutical materials in tablet formulations, such as drugs and matrix elements, is critical to product performance and is used in such areas as quality control, impurity testing, and process monitoring. Recently imaging techniques, such as Raman, near-IR, and fluorescence imaging, have become popular for “visualization” of pharmaceutical formulations, all...

2012
Roger Villanueva Paco Bustamante Michel Crépeau

During the present study, we aimed at providing a first look at the elemental composition of the early stages of cephalopods as an approach to their elemental requirements in culture. Essential and non-essential elemental profiles of the European cuttlefish Sepia officinalis, the European squid Loligo vulgaris and the common octopus Octopus vulgaris laboratory hatchlings and wild juveniles were...

2001
Larry G. Evans Richard D. Starr Johannes Brückner Robert C. Reedy William. V. Boynton Jacob I. Trombka John O. Goldsten Jozef Masarik Larry R. Nittler Timothy J. McCoy

Elemental composition and composition ratios derived from gamma-ray measurements collected by the NEAR-Shoemaker spacecraft while on the surface of 433 Eros are reported. Performance of the gamma-ray spectrometer (GRS) during cruise and orbit is reviewed. The best gamma-ray data were collected on the surface of Eros after the spacecraft’s controlled descent on 12 February 2001. Methods used in ...

Journal: :Annals of agricultural and environmental medicine : AAEM 2011
Andrzej Krauss Hanna Krauss Bogusława Waliszewska Jacek Piątek

The chemical and elemental composition of caviuna wood was determined. The elemental composition of the examined wood was similar to the elemental composition of the deciduous tree species of the temperate zone except that it did not contain sulphur. The examined wood was found to comprise a very high content of extractive substances which could contain toxic substances, as well as a considerab...

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