نتایج جستجو برای: mineral n

تعداد نتایج: 1036945  

Journal: :Acta biomaterialia 2008
Albert Yu-Min Lin Po-Yu Chen Marc André Meyers

The process of mineral formation following periods of growth interruption (growth bands) is described. Flat pearl implantation as well as a new trepanning method are used to observe the transitory phases of calcium carbonate which nucleate and grow during this process. An initial random nucleation of the aragonite polymorph is observed followed by a transition towards spherulitic growth. During...

Journal: :International journal of sport nutrition and exercise metabolism 2004
Nancie H Herbold Bridget K Visconti Susan Frates Linda Bandini

This study examined the traditional (single and multivitamin/mineral supplements) and nontraditional supplement (herbals, botanicals, and other biologic and nutrient supplements) use by female athletes. Frequency, reasons for use, and sources of supplement information were assessed with a self-report questionnaire. Participants were 162 collegiate female varsity athletes. More than half of all ...

2012
Khaled Elbanna Khaled Atalla

In unsaline loam soil, a laboratory experiment was undertaken studying the effect of using diluted saline water from Karoon lake at Fayoum Governorate, on transformations and subsequent nitrification of two ammoniacal fertilizers, namely (NH4)2SO4 and urea, in the presence or absence of natural organic amendments, namely clover and wheat straw. Ammonification and nitrification of both fertilize...

2016
Renguang Zuo

This paper reports a nonlinear controlling function of geological features on magmatic-hydrothermal mineralization, and proposes an alternative method to measure the spatial relationships between geological features and mineral deposits using multifractal singularity theory. It was observed that the greater the proximity to geological controlling features, the greater the number of mineral depo...

2013
Mohd Iqbal Archana Saxena Mahesh Chandra Sharma Ricky Jhambh

Aim: The present study was carried out with the objective to estimate the serum mineral status, and hormonal profile of goats in Kashmir valley. Materials and Methods: Thirty female goats (n=30) were selected randomly from three districts (ten from each district) of Kashmir valley. Serum minerals were estimated by atomic absorption spectrophotometry and hormones by 125 radioimmunoassay (RIA) te...

2015
Amishi B. Joshi David R. Vann Arthur H. Johnson Eric K. Miller

We studied broadleaf and needle-leaf forests along an elevation gradient (600–1200 m) at Whiteface Mountain, New York, to determine relationships among temperature, mineral N availability, and aboveground net primary productivity (ANPP) and controls on the latter two variables. We measured net N mineralization during the growing season, annual litterfall quantity and quality, aboveground woody ...

2008
Kamber Ellsworth Hollie Kelly Cynthia B Wright

Methods An anonymous pencil-paper survey was administered on the campus of Southern Utah University (SUU). The survey was administered to 10% of SUU students (n = 604) during general education class time and was mailed through campus mail to 33.6% of full-time staff (n = 152) and full-time faculty members (n = 81) who were selected using a table of random numbers. The survey included questions ...

2015
Heinz Rennenberg Michael Dannenmann Eric J. Jokela

Nitrogen (N) is an essential nutrient that is highly abundant as N2 in the atmosphere and also as various mineral and organic forms in soils. However, soil N bioavailability often limits the net primary productivity of unperturbed temperate forests with low atmospheric N input. This is because most soil N is part of polymeric organic matter, which requires microbial depolymerization and mineral...

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