Báo cáo hóa học: " A Novel Route for Preparation of Hollow Carbon Nanospheres Without Introducing Template" ppt

... revealed that the content is a crucial factor for preparing carbon nanospheres in a large scale. Because the carbonization process was actually a defunc- tionalization process, the content of reagents ... formation mechanism of hollow carbon nanospheres was also explored. At first, the formation of carbon spheres was a nucleation and growth process (Fig. 3). At a...

Ngày tải lên: 22/06/2014, 00:20

... material Acknowledgements The authors would like to thank Nisse Larson for excellent engineering assistance, Maria Frykman for valuable assistance during data collection and Margaretha Marklund for graphical work. References 1. ... conceived of the study, participated in the design, statistical analyses of the study and helped to draft the manuscript. All authors read and approved...

Ngày tải lên: 19/06/2014, 08:20

... (NiO) has been under extensive investiga- tions for decades as a kind of important functional material. It is regarded as a very prosperous material and can be used as battery cathodes, catalysts, ... the authors 2008 Abstract Nickel oxide nanoparticles and nanoflowers have been synthesized by a soft reaction of nickel powder and water without organics at 100 °C. The mechanism f...

Ngày tải lên: 22/06/2014, 01:20

... strategy for synthesis of a large variety of metal oxide nanoparticles on different carbon nanomaterials (CNMs), including single-walled carbon nanotubes, multi-walled carbon nanotubes, and a ... NANO EXPRESS Open Access A general strategy for synthesis of metal oxide nanoparticles attached on carbon nanomaterials Yi Zhao, Jiaxin Li, Chuxin Wu, Lunhui Guan * Abstract W...

Ngày tải lên: 21/06/2014, 06:20

... Recently, the statistical model based VAD approach is considered an attractive approach for noisy speech. Sohn et al. [13] proposed a robust VAD algorithm based on a statistical likelihood ratio test ... algorithm As well known, heuristic rules based and statistical model based VAD methods respectively have advantages and disadvantages against different noises. We combine the advantages...

Ngày tải lên: 21/06/2014, 17:20

... synchronization, that is to say, the use of soft data information to estimate parameters like carrier phase, frequency, or timing offsets of a modulated signal within an iterative data demodulator. ... “turbo-estimation” approach can be regarded as a special case of the expectation-maximization (EM) algorithm. This leads to a gener al theoretical framework for turbo synchronizati...

Ngày tải lên: 23/06/2014, 00:20

... the derivative of the phase of the signal may take negative values thus misleading the interpretation of instantaneous frequency. In this paper, a novel approach to extract the IF from its adaptive ... optimization, average frequency. 1. INTRODUCTION The instantaneous frequency (IF) of a signal is a param- eter of practical importance in situations such as seis- mic, radar,...

Ngày tải lên: 23/06/2014, 01:20

... Strasbourg, France Email: Laurent Mailly - Laurent.Mailly@viro-ulp.u-strasbg.fr; Charlotte Boulade-Ladame - boulade@esbs.u-strasbg.fr; Georges Orfanoudakis - orfanoudakis@esbs.u-strasbg.fr; François ... 95(5):2509-2514. 3. Hanahan D: Studies on transformation of Escherichia coli with plasmids. J Mol Biol 1983, 166(4):557-580. 4. Renaut L, Bernard C, D'Halluin JC: A rapid and easy me...

Ngày tải lên: 20/06/2014, 01:20

... CATGATCAACTGCTCTGATTAC 1741(+) GGGCTTCCCGTACTTTGTG 2321(+) TGGATTTAGCTCCCTGAATG TYLCV primers for Q-PCR (176 bp amplicon) Ty 2164+ CTAAGAGCCTCTGACTTACTGC 200 nM Ty 2339- AACATTCAGGGAGCTAAATCCAG ... A T A A T T T A A T C (B) G C C G G/GATCCAAGCGGTCATCCGTATAATATTACCGGATGGCCGC/GGCCGCAAAAGAGCT/C C G BamHI NotI SacI T A A T C G T G G C G C C G AAG CGCCTTTTCCT o...

Ngày tải lên: 20/06/2014, 01:20

... lack of a sensitive and multiplex approach for quantifying autoAb against a large panel of clinically relevant tumor-associated antigens (TAA). Methods: To circumvent preparation of phage lysates ... monoclonal Ab against human PSA (Biocon, Inc. Rockville, MD) to quantify total PSA levels. sero MAP-based PSA quantifi- cation was compared with standard ELISA-based PSA assays (Ame...

Ngày tải lên: 20/06/2014, 03:20