Báo cáo hóa học: " Intense Red Catho- and Photoluminescence from 200 nm Thick Samarium Doped Amorphous AlN Thin Films" ppt

... Lett (2009 ) 4:748–752 123 NANO EXPRESS Intense Red Catho- and Photoluminescence from 200 nm Thick Samarium Doped Amorphous AlN Thin Films Muhammad Maqbool Æ Tariq Ali Received: 21 January 2009 ... AlN: Sm with excitation at 488 nm and emission at 598 nm Fig. 2 PL spectrum of amorphous AlN: Sm with excitation at 488 nm and emission at 707 nm Nanosc...

Ngày tải lên: 22/06/2014, 00:20

... CD4 + and CD8 + T cells in patients and healthy controls Whisker plots were used to compare the percentages of naïve and activated CD4 + and CD8 + T cells between HIV-1 infected subjects and ... between HIV-1 infected subjects and healthy controls from Nouna (rural) and Ouagadougou (urban). Panels C and D show the comparison of the percentage of CD95 + CD4 + and of...

Ngày tải lên: 20/06/2014, 08:20

... y( ˜ x)||. Chen and Wan Journal of Inequalities and Applications 2011, 2011:49 http://www.journalofinequalitiesandapplications.com/content/2011/1/49 Page 7 of 14 E and t Î [0, +∞), and J q is single-valued ... Banach space, and A 1 , A 2 , M 1 and M 2 be the same as in Theorem 3.5, and let T be a -Lipschitz continuous mapping. Assume that Ω ∩ F(T) ≠ ∅,{a n }and{ b n } are sequ...

Ngày tải lên: 21/06/2014, 00:20

... toward shorter wavelength com- pared with that in monoclinic La 0.9 Gd 0.1 PO 4 :Eu 3? (( CTB = 268 nm) , being centered at 255 nm for La 01 Gd 0.9 PO 4 :Eu 3? and 263 nm for La 0.5 Gd 0.5 PO 4 :Eu 3? . ... PO 4 2- ), peaking at 253 nm and a sharp absorption band from 8 S 7/2 – 6 I J transitions for Gd 3? , revealing the existence of the energy transfer process between Gd 3? and...

Ngày tải lên: 21/06/2014, 08:20

... wurtzite-structure AlN (h -AlN) crystalline structure with lattice constants of a = b = 0.3111 nm and c = 0.4979 nm (JCPDS: 25-1133), which shows that pure wurtzite -AlN can be prepared by arc discharge. A ... feather-like AlN nanostructures still needs more detailed and direct evidences. Figure 6 shows room temperature photoluminescence of AlN n anostructur es prepared in th...

Ngày tải lên: 21/06/2014, 08:20

... Problems Volume 2009 , Article ID 362983, 16 pages doi:10.1155 /2009 /362983 Research Article Existence and Uniqueness of Solutions for Higher-Order Three-Point Boundary Value Problems Minghe Pei 1 and Sung ... 9x 2 . 3.72 Choose αt−t 2 ,βtt 2 and γtt 2 . It is easy to check that αt−t 2 ,and tt 2 are lower and upper solutions of BVP 3.70, 3.71, respectively, an...

Ngày tải lên: 21/06/2014, 20:20

... the Wiener (random-walk) process. The results show that the code can withstand phase noise of 2 ◦ standard deviation per symbol with small loss. Copyright © 2008 S. Karuppasami and W. G. Cowley. ... sridhar.karuppasami@postgrads.unisa.edu.au Received 1 November 2007 ; Revised 7 March 2008 ; Accepted 27 March 2008 Recommended by Branka Vucetic This paper presents the construction and...

Ngày tải lên: 21/06/2014, 23:20

... Publishing Corporation Journal of Inequalities and Applications Volume 2007 , Article ID 87650, 8 pages doi:10.1155 /2007 /87650 Research Article Extinction and Decay Estimates of Solutions for a Class ... and large-time behavior of solu- tion of (1.1)forthecaseβ = 0and <0; and in [4], the authors obtained conditions for the extinction of solutions of (1.1) without absorption by u...

Ngày tải lên: 22/06/2014, 18:20

... environment where other radio sources were radiating signals in the ISM frequency band and interfering with the 802.11 frame tra nsmissions. While the standard 802.11 MAC protocol suffered from ... physically transmitted and received to and from the RF interface. This part implements both the 802.11 legacy standard and the new backoff algo- rithm in order to allow mixed environment...

Ngày tải lên: 22/06/2014, 22:20

... wavelet- based standard JPEG -2000 [7], and more recently video cod- ing [17]. As for the choice of the specific coding scheme, S. Li and W. Li’s SA-WT is by now a de facto standard, and SPIHT guarantees ... object-based coding: the reduced energy compaction of the WT and the reduced coding e fficiency of SPIHT that arise in the presence of regions with arbitrary shape and size, and...

Ngày tải lên: 22/06/2014, 22:20