Báo cáo "Reseach on the removal of hexavalent chromium from aqueous solution by iron nanoparticles " doc

... concentration was removed by iron powder. 4. Conclusion The removal of Cr(VI) by Fe 0 nanoparticles was studied, the concentration of Fe 0 nanoparticles had effect on the reduction of ... Comparison of the effectiveness of Cr(VI) reduction by nanoiron and power iron. Experimental conditions: pH = 4-5, Cr(VI) concentration = 2.0mg/l, iron powder mas...

Ngày tải lên: 14/03/2014, 10:20

... cover only about one percent of the earth’s surface, but most of the issues happening in the cities greatlyimpact on the environmentandglobal change [7]. Urbanization leads ... population overload in the city has been shown not only by the natural increase on the spot, but also by the mechanical movement from otherprovinces. Asaresult,ther...

Ngày tải lên: 14/03/2014, 15:20

... 1981) on 20g of brown rice with dichloromethane as solvent and collidine as internal standard. Duration of extraction was 30 minutes from apparition of the first drop of water in the bottom of ... Quantification of 2-AP in pandan leaf: Content of 2 - AP in pandan leaf extracted by SDE was calculated as follows: Fig 2. Syst em of the SPME extraction Research...

Ngày tải lên: 19/03/2014, 16:20

... section the photon self-energy is calculated by the dimensional regularization. In the third section this problem is done by the Pauli-Villars method. Finally, we draw our conclusions. 2. Dimensional ... invariance of theory is considered carefully step by step in those calculations by above methods of regularization for the photon self-energy diagram. The paper is org...

Ngày tải lên: 28/03/2014, 13:20

... sub-group' is the only one which requires explanation in terms of the theor~j behind the orgardsation of the system. This notion was introduced in an attempt to represent the fact that there may ... limitations of the printed page, or the mental capacity of the terminologist. III %he on- line Terminological Thesaurus The present project has concentrated...

Ngày tải lên: 01/04/2014, 00:20

... function of GdnHCl concentration is shown. Table 1. Effect of the variation of the protein concentration in GdnHCl induced equilibrium unfolding transition of s-MDH (detected by fluorescence emission ... our observation in the case of the equilibrium denaturation/renaturation of s-MDH, which indicated the molten globule nature of the intermediate. One of the char...

Ngày tải lên: 08/03/2014, 23:20

... by the hyperphosphorylated form, by a positive effect caused by accumulation of the hypophosphorylated form or by a combination of the two mechanisms, in keeping with the self-regulation of the ... caused by two mechanisms. On the one hand, there is an increase in transcription, as shown by the luciferase experiments and in the levels of Rb mRNA; and, on...

Ngày tải lên: 16/03/2014, 23:20

... In chain B of the NP simulation, the first and second b-strands are both lost, whereas the second half of the first a-helix is lost in chain C of the NPT simulation. The first half of the third a-helix is ... ns of simulation and, apart from the loss of some secondary structures in this region (described below), remained in contact with the rest of the protein...

Ngày tải lên: 29/03/2014, 23:20

... forms of ciprof- loxacin and levofloxacin were not restricted for the first three days of therapy by NARP, the consumption of these quinolones was unsurprisingly high. Besides that the use of ... of the initiation of NARP in 2003. The study in- cluded the data obtained from all of the four univer- sity hospitals, and one referral tertiary-care educa- tional s...

Ngày tải lên: 25/10/2012, 11:00

... procedures in the oral and maxillofacial region. However, creation of a se- cond surgical site, prolonged operation time, donor site morbidity, inadequate bone volume and chronic pain are ... bone substitutes in response to the same HBOT pro- cedure could be partially explained by the basic tissue effects of HBOT and local characteristics of the bone grafts. Collagen syn...

Ngày tải lên: 25/10/2012, 11:15