preparation and presentation of scientific reports

Ngày tải lên: 05/09/2013, 16:11

Ngày tải lên: 25/12/2013, 15:10

... somewhat expand. The dosimetric properties of the powder were studied. In the TL glow curve of LiF:Mg,Cu,Na,Si powder the main dosimetric peak appeared in the range of 227-247 o C and the ratio of the ... powder were studied. The main dosimetric peak of LiF:Mg,Cu,Na,Si appeared in the range of 227− 247 o C and the ratio of the height of the main peak to that of the other small peaks in the LiF:Mg,Cu,Na,Si is ... with rate of 4 l/min. After annealing treatment, the samples were washed with HCl solution. VNU Journal of Science, Mathematics - Physics 23 (2007) 225-231 Preparation and characteristics of LiF:Mg,Cu,Na,Si thermoluminescent...

Ngày tải lên: 13/02/2014, 04:20

... concentration of the SnCl 4 solution, and the films were annealed at different temperatures and for different period of time. Photoconductivity measurement In order to evaluate properties of obtained ... (R D ) and the light resistance (R L ) under the irradiation of 7W Hg lamp at the distance of 10cm were measured. The calculated ratio of R D /R L was considered as a photoconductivity of obtained ... results of measurements show that all values R L, R D, and R D /R L strongly depend on the temperature and time of annealing as presented in Fig. 4. P.V. Nho, T.K. Cuong / VNU Journal of Science,...

Ngày tải lên: 13/02/2014, 04:20

Ngày tải lên: 14/03/2014, 13:20

... catalyst. The lengths of SiOx nanowires are in the range of several tens to hundreds of micrometers, and the diameters of nanowires are 20–80 nm. Transmission electron microscopy and high-resolution ... Preparation and photoluminescence of high density SiOx nanowires with Fe 3 O 4 nanoparticles catalyst X.J. Wang a, ⁎ , B. Dong b , Z. Zhou a a School of Electronics Engineering and Computer ... assays, chemical sensors, and superparamagnets [8,9]. Recently, efforts have been devoted to preparation of Fe 3 O 4 nanoparticles, nanowires and nanotubes. In 2002, Sun and Zeng [10] prepared the...

Ngày tải lên: 16/03/2014, 15:11

... such as C–O, C=O and O – C=O which might stimulate formation of the composites, and enhance the interfacial combination of TiO 2 with carbon nanotubes. The formation of TiO 2 and its compounding ... Preparation and characterization of CNTs–TiO 2 composites Li Chen * , Bai-Lan Zhang, Mei-Zhen Qu, Zuo-Long Yu * Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, ... process of CNTs. Fig. 3 shows TEM image of CNTs–TiO 2 composites in which the black materials of different size absorbed onto Fig. 1. TEM image of as purified CNTs. Fig. 2. XPS spectrum of purified...

Ngày tải lên: 20/03/2014, 13:06

... the use of TEM apparatus and to Prof. T. Yoko, Institute for Chemical Research, Kyoto University for the use of XRD equipment. This work was supported by grant -in- aids from the Ministry of Education, ... images of the nanosheet TiO 2 calcined at 600 and 700 °C showed almost nanoparticles with a mixture of anatase and rutile TiO 2 structure (about 10–50 nm in diameter, at 600 °C, Fig. 6(g–h)), and ... pattern of the as-synthesized nanosheet TiO 2 and nanosheet TiO 2 calcined for 1 h at 300–700 °C. 2975S. Pavasupree et al. / Materials Letters 61 (2007) 2973–2977 surface area and pore volume of...

Ngày tải lên: 20/03/2014, 13:06

... and angles) of O, W and Ti are expected but, not surprisingly, are too small to be detectable as shifts of W 4f and Ti 2p core level BEs and cannot be resolved in STM images. The appearance of ... supports makes it difficult to gain control of cluster size in preparing samples, and mass control of deposited species has been limited to soft-landing of gas-phase mass- selected charged species ... WO 3 nm À2 and metallic W. Fig. 2. Linear correlation of W NVV /Ti LMM AES ratio and W 4f intensity with amount of deposited WO 3 , the latter is plotted in units of WO 3 nm À2 based QCM measurement of...

Ngày tải lên: 20/03/2014, 13:06

... diameters of the rings, respectively) and t = 160–200 nm (t is the thickness of the rings or length of the tubes) nanorings due to the absence of the vortex states and the presence of out-plane and ... spectra of samples S2 (a) and S3 (b). can be exclusively indexed to ␣-Fe 2 O 3 , according to standard data (JCPDS 33-0664). In Fig. 1(b) and (c), the reflection peaks of XRD patterns of S2 and S3, ... think that sample S2 is Fe 3 O 4 and sample S3 is ␥-Fe 2 O 3 . Fig. 3 presents the SEM and TEM images of samples S1, S2 and S3. Fig. 3(a) and (b) show the morphologies of ini- tial synthesized ␣-Fe 2 O 3 nanotubes...

Ngày tải lên: 20/03/2014, 13:06

... English-Native-Speaking Editors (Netherlands) (SENSE), the Association of Learned and Professional Society Publishers (ALPSP), and the Society for Editors and Proofreaders (SfEP) . We have major ... includes original articles and meeting reports, announces new developments and forthcoming events, reviews books, software and online resources, and highlights publications of interest to members. ... Authors and Translators of Scientific Articles. Our goal was to make international scientific communication more efficient and help prevent scientific misconduct. This document is a set of major...

Ngày tải lên: 26/03/2014, 14:09

... the evolution of bacteria and moulds, and then very early recruited in the metazo- ans. Here we report the expression and purification of recombinant geodin and its thermodynamic and spect- roscopic ... of thermodynamic stability, are of about 80 kJặmol )1 for human-c S and spherulin 3a, and of 41 and 45 kJặmol )1 for geodin and protein S, respectively. The value of 45 kJặmol )1 for protein S ... from the S preparation (A) and the IB preparation (B) from the lysate of E. coli cells transformed with geodin encoding cDNA. The inserts show the results of SDS ⁄ PAGE separations of individual...

Ngày tải lên: 30/03/2014, 15:20

... chateaubriand. (f) Cocktail picks near shrimp, meat balls, melon balls, and similar items. (3) Coffee and tea dispensers and cups and saucers should be neatly arranged and away from the flow of guests. ... (hot and cold); toast; sweet rolls or coffee cake; hot cakes or waffles and sirup; sausage, bacon, or ham; and coffee, tea, and milk. b. Brunch. A brunch buffet is commonly served on Sundays and ... decorations, centerpieces, and in some cases, food garnishes. d. Season of the Year and Time of Day. The season and time of day must be taken into account. The same type of menu would not be appropriate...

Ngày tải lên: 03/05/2014, 12:14

... magne- tization (𝑀 𝑠 ) of oleic acid and oleyamine stabilized Fe 3 O 4 nanoparticles with the diameter of about 8 nm was 38.26 emu/g, and zero coercivity was found. How- ever, the value of 𝑀 𝑠 of Fe 3 O 4 /SiO 2 decreases ... g of iron-oleate, 1.91mL of oleylamine and 0.64 mL of oleic acid were mixed together and were heated at 120 ∘ C for one hour. After that, the dark solution was quickly heated up to 200 ∘ C and ... coating of amorphous mesoporous silica on the surface of Fe 3 O 4 nanoparticles. All of the diffraction peaks of CdTeS QDs in Fig. 2(c) are between the diffraction peaks of the cubic CdTe and CdS...

Ngày tải lên: 14/05/2014, 15:49

... measurements and the analysis of the spectra and carried out the analysis of the water contact angles on nanoporous alumina. AK and CE participated in the design of the study and coordination of the ... reaction of HMDS with the alumina surface occurs by the dissociative che- misorption of HMDS via reaction of coordinatively unsaturated Al + and O-sites. Subsequent reaction of pendant -O-SiM e 3 and ... important for a wide range of scientific and technological applica- tions, including development of coatings that possess self-cleaning property, reduction of vi scous drag of solid surfaces subject...

Ngày tải lên: 21/06/2014, 01:20

... in Figure 2b, the bands of C-H and O- CH 2 are also observed in the surface-modified Cu nano- particles, while the absorption peaks of P = S and P-S shifts, and the bands of N-H mostly disappear. Figure ... additives in oils. Viscosities and thermal conductivities of nanofluids The effects of both temperature and mass fraction of the nanoparticles on the viscosities of the nanofluids were investigated. ... viscosity, thermal conductivity, and thermal oxidation stability of the nanofluids are also investigated. Experimental Materials and preparation of ligand All the materials and solvents used in this...

Ngày tải lên: 21/06/2014, 03:20

... HS15/propofol of 10/1/5 by weight, average micelle size of about 101 nm and PDI of 0.12 as shown in Figure 2. The LC of mixed micelles was about 32.4%, and the content of propofol in the preparation ... of propofol to mPEG-PLA and Solutol HS15, which allowed for the best propofol solubili- zation, a series of propofol-loaded mixed micelles was pre- pared with different weight ratios of propofol ... Tempera- ture and relative humidity were maintained at 25°C and 50%, respectively. All care and handling of animals were performed with the approval of Institutional Authority for Laboratory Animal Care of...

Ngày tải lên: 21/06/2014, 04:20

Ngày tải lên: 21/06/2014, 04:20

Ngày tải lên: 21/06/2014, 06:20

Ngày tải lên: 21/06/2014, 20:20