báo cáo khoa học: "Synthesis of three-dimensional calcium carbonate nanofibrous structure from eggshell using femtosecond laser ablation" doc

... synthesize calcium carbonate 3D nanofi- brous structures from eggshells using femtosecond laser processing. To the best of authors’ knowledge, this is the first work on synthesizing 3D calcium carbonate nanofibrous ... (EDS) analyses of a) unprocessed eggshell, and b) synthesized calcium carbonate nanofibrous structure. Figure 5 X-ray Diffraction patterns of a...

Ngày tải lên: 11/08/2014, 00:22

... by pronase digestion of ovomucoid from Japanese quail egg white and then purified by Sephadex G-25 gel chromatogra- phy [21]. Analysis of this sample, using MALDI-TOF MS and pyridylamination of the carbohydrate ... Synthesis of b-mannosides using endo-b-mannosidase FEBS Journal 272 (2005) 1660–1668 ª 2005 FEBS 1665 Synthesis of b-mannosides using the transglycosylation activi...

Ngày tải lên: 30/03/2014, 16:20

... to explain the dual cofactor specificity of the enzyme from T. acidophilum. Cloning and expression of the P. torridus glucose dehydrogenase gene Primers were constructed using the data of the com- plete ... vector pET24d was obtained from Novagen. Expression of Pt-gdh under the control of araB promoter was induced for 4 h at 30 °C by the addition of 0.2% ara- binose when the...

Ngày tải lên: 19/02/2014, 16:20

... attention of teachers of several elementary schools. To meet the teaching goals of teacher in different areas, we have to allow the teachers to compile their own games for their needs. The data structure ... teach with charac- ter combinations of different challenging levels. During the process of playing, our system ran- domly selects one character from the list of 10...

Ngày tải lên: 19/02/2014, 19:20

... His 6 -PecF). Addition of Triton X-100 to the reaction mixture resulted in an absorption shift of the long wavelength band of PCB from 620 nm to 600 nm (Fig. 2), irrespective of the presence of the lyase ... 100 Fig. 2. Interaction of PCB with Triton X-100. Addition of Triton X-100 resulted in a blue shift of the absorption of PCB from 620 nm to 600 nm, both in the prese...

Ngày tải lên: 21/02/2014, 03:20

... suppressor of iNOS, is released more readily under the influence of NO than cadmium, but in contrast to the MT isoform 1, the amount of metal released from the b-domain of MT-2 is comparable to that from ... of NO, the amount of cadmium is reduced at this rather extreme NO Fig. 1. Wavelength and time scans of the CD of MT2 in the presence and absence of NO and GSH/GSSG. C...

Ngày tải lên: 07/03/2014, 15:20

... algorithm were performed using Microcal origin 6.1 (Origin Laboratory Corp., Northampton, MA, USA). Briefly, starting from the given set of parameters, the sum of squared residuals of Eqn (3) from the experimental data ... dry weight of softwoods, 15–30% of hardwoods and up to 30% of annual graminaceous plants [7,8]. Endo-1,4-b-xylanases (EC 3.2.1.8) are O-glycoside hydrolase...

Ngày tải lên: 07/03/2014, 17:20

... concatenation. VV-~ ~ W2 W1 ~ subimage _of( W2) left_part _of( W1) ,~ left_part _of( W2) right_part _of( W1) right_part _of( W2) right_part _of( W1) ,.~ left_part _of( W2) image matching; Table 1: Possible ... symbolic level at image level W1 W2 W2=XeWleY prefix _of( W1) = prefix _of( W2) suf yiz_oy(W1) = ~u y yix_o y(W2 ) suyyiz _of( WQ = prefiz _of( W~) Note 1: "~&qu...

Ngày tải lên: 08/03/2014, 07:20

... & Krishnasamy, G. (2000) Mechanism of catalysis of the cofactor-independent phos- phoglycerate mutase from Bacillus stearothermophilus.Crystal structure of the complex with 2-phosphoglycerate. ... in contrast to that of the mammalian d-PGAM that was enhanced 300% by the addition of its cofactor. The increase ofthemutaseactivityoftheLeishmania fraction might be explained by t...

Ngày tải lên: 16/03/2014, 16:20

... discovered in the crystal structure of catalase HPII from E. coli [45,46]. In t his case, a covalent bond joins C b of the essential t yrosine and one of the imidazole nitrogens (N e ) of a histidine. ... deduced from the crystal structures of active site variants o f HPII from Escherichia coli. Proteins 44, 270–281. 52. Hollenberg, P.F., Rand-Meir, T. & Hager, L.P. (197...

Ngày tải lên: 23/03/2014, 12:20