báo cáo hóa học: " Intense ultraviolet emission from needle-like WO3 nanostructures synthesized by noncatalytic thermal evaporation" pptx

... 6:451 http://www.nanoscalereslett.com/content/6/1/451 Page 6 of 6 NANO EXPRESS Open Access Intense ultraviolet emission from needle-like WO 3 nanostructures synthesized by noncatalytic thermal evaporation Sunghoon Park, Hyunsu Kim, Changhyun ... from the needle-like tung- sten oxide nanostructures grown in the temperature zone from 590 to 750°C by thermal evapo...

Ngày tải lên: 21/06/2014, 02:20

... enhance- ment of emission. This work suggests that plasma treat- ment technique could be a direct means to improve field- emission properties of nanostructures. Keywords Field emission Á Metal ... materials, field -emission properties are mainly dependent on the morphologies like dimension and apex geometry of 1-D and quasi–1-D nanostructures. To improve the field -emission properties...

Ngày tải lên: 21/06/2014, 20:20

... purchased from Qia- gen (Germany). dNTPs (0.5 mM for each), 10 × PCR buf- fer, MgCl 2 (2.5 mM) and Taq polymerase (5 U/μl) were purchased from Promega, USA. SYBR Green was pur- chased from DBI, ... transformation of Science & Technology Achievements from the Third Military Medical University, China (2010XZH08, SWH2008008). We appreciate Qianglin Duan from Tongji Hospital for cri...

Ngày tải lên: 20/06/2014, 03:20

... recorded for all the synthesized Zn 1-x Mn x S samples, Figure 1 shows one such X-ray diffractogram recorded for Zn 0.9900 Mn 0.0100 S. It is clear from the diffractogram that synthesized sam- ples ... Zn 1-x Mn x S(0≤ x ≤ 0.1) nanocrystals have been synthesized using wet chemical co- precipitation method. Crystallographic and morphological characterization of the synthesized materi...

Ngày tải lên: 21/06/2014, 02:20

... and after thermal activation. It is clear from the figure that thermal annealing enhances the luminescence from Sm. It is observed that thermal annealing doubles the luminescence intensity from the ... the RE ions differ from the other elements and are character- ized by an incompletely filled 4f n shell. The 4f electrons lay inside the ion and are shielded from the surroundin...

Ngày tải lên: 22/06/2014, 00:20

... acetaldehyde from the bioreactor headspace of cells from 4-, 24- and 48-h incubations and ambient lab airFigure 3 Chromatogram of acetaldehyde from the bioreactor headspace of cells from 4-, 24- ... due, in part, to the production of these gases by the leukocytes themselves. Chromatogram of hexanaldehyde from the bioreactor headspace of HL60 cells from 4-, 24- and 48-h incubatio...

Ngày tải lên: 18/06/2014, 15:20

... n harvesting energy from the knee movement is that as more energy is harvested, the resistance to the motion as generated by the device will increase, thereby increas- ing the motion controls by the device ... that are normally produced by the j oint muscles during a given motion. There are two ways to do this: first, by constantly chan- ging the gear ratio, and second, by changin...

Ngày tải lên: 19/06/2014, 08:20

... also exhibit helicase and ATPase activities [10], which are shared by Rep52 [11] and by Rep40 [12]. The cap gene is transcribed from a single promoter at map position 40 (p40). Alternative splicing ... molecules encoding a functional protein are generated from the rAAV DNA head-to-tail heterodimers by splicing out the AAV ITR sequences from the primary transcripts (Fig. 5) [91]. A...

Ngày tải lên: 20/06/2014, 04:20

... prevalence can be explained largely by Lesotho's dependence on migrant labour: the heavy reli- ance on remittances from miners employed in South Africa, by some estimates, accounts for almost ... technical and management training, and additional human resources initially paid for by MSF and now absorbed by Scott Hospital. A mobile specimen collection system enabled clinic patie...

Ngày tải lên: 20/06/2014, 08:20

... research on QALYs lost from stroke have been provided for generic stroke or by stroke sever- ity [8,19]. It is reported that only about half of the vari- ance in QoL is explained by stroke severity ... in 1996/97 ranged from 0.9 to 1.3 by age and sex with an overall ratio close to unity (personal communication, T. Vos March 2010). Nonetheless, we included point estimates used from...

Ngày tải lên: 20/06/2014, 16:20