Tài liệu Báo cáo " Common pronunciation problems of vietnamese learners of english " docx

... Common pronunciation problems of vietnamese learners of english Ha Cam Tam 1. Problem statement Since English is one of the core subjects at school, more and more schools are teaching English ... results of our study, although small but the results were fairly impressive in terms of the coverage of sounds mispronounced as well as the seriousness of errors...

Ngày tải lên: 12/02/2014, 20:20

... convergence of these methods are studied. Finally in section 4 some numerical examples are discussed. 2. Properties of nonnegative pencils of matrices In what follows we will consider a pencil of matrices ... number of iterations needed for convergence and the total time for the serial computation of Red - Black SOR and Jacobi method are given in the following tables. Table 5. Num...

Ngày tải lên: 13/02/2014, 03:20

... determined by the rate of association. It should be noted that quanti- tative analysis of the more rapid phase of association requires measurement of the binding on time scales of minutes, a time ... presence of unlabeled PCSK9 (Fig. 4A). In the presence of a high concentration of unlabeled wild-type PCSK9, the half- time of the rapid phase was reduced from 19 to 16 min and...

Ngày tải lên: 14/02/2014, 14:20

... analysis of purified PhyH, PhyH-DI and PhyH-DII. Lane M, molecular weight markers; lane 1, culture supernatant of PhyH; lane 2, culture supernatant of PhyH-DII; lane 3, culture supernatant of PhyH-DI; ... Environmental factors that affect the catalytic activities of PhyH and PhyH-DII. (A) Effect of 0–5.0 mM Ca 2+ at 37 °C. (B) Effect of pH at 37 °C. (C) Effect of temperature at...

Ngày tải lên: 14/02/2014, 15:20

... University of Bath, UK 2 Department of Biochemistry, University of Wisconsin–Madison, USA 3 Department of Chemistry, University of Wisconsin–Madison, USA Introduction Upon catalyzing the cleavage of ... regarding a new class of surrogates for the phosphoryl group. Results and Discussion Sulfonimides as inhibitors of RNase A We began by determining the ability of three backbo...

Ngày tải lên: 14/02/2014, 22:20

... transfer of phosphate esterified in the 5¢ position of 6-hydroxypu- rine monophosphate nucleosides [1]. The transfer of phosphate can lead to phosphorylation of inosine, guanosine and a number of their ... disappearance of the heavier inactive peak. Furthermore, FPLC analysis of the recombinant wild-type cN-II showed the presence of the tetrameric active form irrespective of...

Ngày tải lên: 15/02/2014, 01:20

... K m ) of PRTFDC1 towards hypoxanthine and guanine was only 0.26% and 0.09%, respectively, of that of HPRT. This low activity could be explained by the fact that PRTFDC1 has a Gly in the position of the ... metabolic consequences of having HPRT deficiency are an overproduction of uric acid and elevated levels of PRPP [3]. Patients hav- ing mutations resulting in partial HPRT defici...

Ngày tải lên: 15/02/2014, 01:20

... previously demonstrated the application of this method to the determination of the glycan structure of a form of AFP [10]. However, identification of the details of a glycan structural change on a ... methylesteri- fication of sialic acid moieties. All spectra were obtained in the positive ion mode using MALDI– quadrupole ion trap (QIT)-TOF MS. A strategy for discovery of cancer...

Ngày tải lên: 16/02/2014, 08:20

... The expression of T-bet has been seen within a wide variety of tissues and cells in the Ginbuna crucian carp [27] and, in mammals, in the lung tissue of mouse and spleen and thymus of human and ... kidney, gill, gut, liver and skin tissue of healthy fish (data not shown). After stimulation of kidney cells with a variety of immunostimulants, the expression of t-bet, stat6 and fo...

Ngày tải lên: 16/02/2014, 09:20

... Kessler Department of Clinical Medicine, University of Oxford, UK Introduction The genus Yersinia consists of three pathogenic species that are agents of a variety of diseases, one of which was historically ... GTPase-binding capacity of YpkA and OTUB1-mediated increase in susceptibility to infection (Fig. 6). The binding of small GTPases has been reported to be independent o...

Ngày tải lên: 16/02/2014, 15:20