Authors:Feng Wu, Xiuli Zhao, Shumin Wang, Hui Zhou, Shaojie Guo, Siyang Ni, Bo Yang, Lihua Zhang, and Xinde Xu
[ 1 ].
Lutein is found in a number of human tissues but the highest concentration of these carotenoids (0.1–1 mM) is found in the human retina [ 2 ]. In the human eye, lutein and zeaxanthin are specifically located at the center of the retina
Ferrites have been used to separate a wide range of substances such as dissolved metal species, particulate matter, and organic and biological materials; they have been used almost exclusively for metal waste treatment applications. However, ferrites can be used to remove and concentrate selected trace metals in a wide variety of feed solutions requiring analysis. A brief overview of ferrite properties and recent applications for trace metal recovery and concentration will be presented.
Indoor radon evaluations in specific regions of the country have been performed in an effort to assess the magnitude of the
radon problem and its public health consequences. The survey of this paper covers four large non-tropical regions of north
and central Mexico, and reports the results of measurements of indoor radon concentrations in houses of towns with between
100,001 and 500,000 inhabitants. The measurements were done by using passive detectors, namely, the closed-end-cup system
with CR-39 polycarbonate chips as detector material. The measurements were performed throughout the two coldest seasons (between
5 and 20°C), winter and spring, in integration periods of 28 days covering the six month cycle. The results show a moderate
average radon concentration below 200 Bq·m−3 with occasional higher values. This is very probably due to the climate conditions and the traditional habits of open door
and window ventilation. The IFUNAM (Instituto de Física, Universidad Nacional Autónoma de México) Laboratory, where the closed-end
cup system for radon was developed, has gained experience though this survey and is willing to share it for future surveys
at regional or national levels.
Authors:K. Neelam, N. Rawat, V. Tiwari, R. Prasad, S. Tripathi, G. Randhawa, and H. Dhaliwal
Genc, Y., Verbyla, A.P., Torun, A.A., Cakmak, I., Willsmore, K., Wallwork, H., McDonald, G.K. 2009. Quantitative trait loci analysis of zinc efficiency and grain zinc concentration in wheat using whole genome average interval mapping. Plant Soil 314
There is a well-established literature on the use of concentration measures in informetrics. However, these works have usually
been devoted to measures of concentration within a productivity distribution. In a pair of recent papers the author introduced two new measures, both based on the Gini ratio,
for measuring the similarity of concentration of productivity between two different informetric distributions. The first of these was derived from Dagum's notion of relative economic affluence;
the second - in some ways analogous to the correlation coefficient - is completely new. The purpose of this study is to develop
a purely empirical approach to comparative studies of concentration between informetric data sets using both within and between measures thereby greatly extending the original study which considered just two data sets for purposes of illustration of
the methods of calculation of the measures.
Authors:Asta Tvarijonaviciute, José Cerón, and Fernando Tecles
Brunson, B., Zhong, Q., Clarke, K. J., Bedi, D., Braden, T. D., Van Santen, E. and Judd, R. L. (2007): Serum concentrations of adiponectin and characterization of adiponectin protein complexes in dogs. Am. J. Vet