The continental bio-cycling of silicon (Si) plays a key role in global Si cycle and as such partly controls global carbon (C) budget through nutrition of marine and terrestrial biota, accumulation of phytolith-occluded organic carbon (PhytOC) and weathering of silicate minerals. Despite the key role of elemental composition of phytoliths on their solubility in soils, the impact of plant cultiva...

BACKGROUND In metabolomics researches using mass spectrometry (MS), systematic searching of high-resolution mass data against compound databases is often the first step of metabolite annotation to determine elemental compositions possessing similar theoretical mass numbers. However, incorrect hits derived from errors in mass analyses will be included in the results of elemental composition sear...

Hair is among most common types of evidence reported in criminal investigations. Throughout the stages of usual hair-growth parameters, hairs goes through a continuous loss from every individual, and due to this loss these hairs may be transferred from one individual to another in any criminal commotion [1]. Hair have gained a wide interest in its examination for various fields counting taxonom...

Samples of the perivitelline fluid in the polar pockets of preblastoderm Drosophila embryos were analyzed with an electron microprobe, and the results compared with analyses of adult hemolymph. The concentrations of sodium, magnesium, calcium, chlorine, and phosphorus are about the same in these two fluids; but potassium and sulfur are three to four times higher in perivitelline fluid. Moreover...

Okada, K. Shirai, Y. Yamamoto, T. Arai, K. Ogawa, T. Inoue, and M. Kato, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan. [email protected], University of Tokyo, Hongo, Tokyo 113-0033, Japan., Graduate University for Advanced Studies, Sagamihara, Kanagawa 229-8510, Japan, 4 Tokyo Institute of T...

OBJECTIVES To investigate the sources of high concentrations of particles of < 10 microns diameter (PM10) in classrooms, observed in a previous study on childhood exposure to PM10, and to study the correlation between classroom and outdoor concentrations of mass and elements of PM10. METHODS Measurements of PM10 were conducted in two schools and outdoors in Amsterdam, the Netherlands. Averagi...