materials selection preparation and characterization
Báo cáo hóa học: " Preparation and Characterization of Nano structured Materials from Fly Ash: A Waste from Thermal Power Stations, by High Energy Ball Milling" potx
... of fresh and modified fly ash (A and B) SEM of fresh fly ash at 1,000 and 2,500 times magnification, (C and D) SEM of ball milled fly ash for 20 h at 1,000 and 3,000 times magnification, (E and F) SEM ... fresh fly ash (Class F) cl þ cl ð2Þ Subscripts s and l represent solid and liquid states respectively and h represents the contact angle of the liquid and the material surface The work of adhesion ... energy and work of adhesion of fresh as well as ball milled fly ash in water and formamide These parameters have been extensively used to understand the surface characteristics of the materials...
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Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells
... polymerization and phase inversion, and all of the other reagents were analytical grade 2.2 Preparation of the PVDF-based composite membrane The PVDF powders were basified firstly, and the double ... (DMAc) firstly, and then styrene, divinylbenzene (DVB) and benzoyl peroxide (BPO) were added to the solution and stirred with water bath at 343 K The dosage of PVDF, styrene, DVB and BPO was that ... immersed in deionized water for 48 h, and then the sulfonated copolymer washed with deionized water and dried for usage The sulfonated copolymer with weight of 15 g and 2.5 g polyvinyl pyrrolidine...
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Tài liệu Báo cáo "Preparation and characterization of nanocomposite TiO2/SnO2 films " pdf
... impregnated and annealed at 325, 375 and 425oC Discussion TiO2 belongs to dielectric materials With a wide band gap of 3.2 eV, at room temperature there are no free carriers in the conducting band Under ... Shi, Preparation, electronic structure and photocatalytic activity of the In2TiO5, Materials Science and Engineering: B Vol 139 (1) (2007) 74 J.H Kim, S.H Kim, et al., Fabrication of nanoporous and ... increases according to time and temperature of annealing In the other hand, SnO2 is self-doping semiconductor Due to the stoichiometric deviation, some Sn atoms were formed and played a role of the...
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preparation and characterization of cnts tio2 composites
... References [1] M.S.P Shaffer, A.H Windle, Advanced Materials 11 (1999) 937 – 941 [2] R Andrews, D Jacques, M Minot, T Rantell, Macromolecular Materials and Engineering 287 (2002) 395 – 403 [3] C.A ... D.H Wu, S.W Zhu, Materials Science & Engineering A, Structural Materials: Properties, Microstructure and Processing 271 (1999) 395 – 400 [9] J.X Jin, K.P Pramoda, S.H Goh, G.Q Xu, Materials Research ... of hydrolysis, and CNTs were partly coated with TiO2 There were some polar oxygenated groups such as C – O, C=O and O – C=O which might stimulate formation of the composites, and enhance the...
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preparation and characterization of high surface area nanosheet titania with mesoporous structure
... destroyed and changed to nanorods/ nanoparticles composite with anatase TiO2 structure at 300–500 °C (10–15 nm in rods diameter and about 5–10 nm in particles diameter, Fig 6(a–f)) The SEM, TEM, and ... nanosheet TiO2 calcined at 600 and 700 °C showed almost nanoparticles with a mixture of anatase and rutile TiO2 structure (about 10–50 nm in diameter, at 600 °C, Fig 6(g–h)), and rutile TiO2 structure ... synthesized at 110–120 °C for 48–72 h and dilute base treatment generates thin, curled sheet materials [28–31] The nanosheet structure after calcinations was destroyed and changed to nanorods/nanoparticles...
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preparation and characterization of monodispersed wo3 nanoclusters on tio2(110)
... structural changes (bond lengths and angles) of O, W and Ti are expected but, not surprisingly, are too small to be detectable as shifts of W4f and Ti2p core level BEs and cannot be resolved in STM ... deposition, the surface was analyzed before (as-dosed) and after thermal annealing to selected temperatures up to 900 K Results and discussion 3.1 Characterization of as-dosed material To characterize ... substrate Evidently, and unlike the cation–anion resolution for N2 on the TiO2 substrate, the physisorption potential between as-deposited WO3 and N2 either does not distinguish between W and O sites...
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Báo cáo khoa học: Preparation and characterization of geodin A bc-crystallin-type protein from a sponge pot
... bacteria and moulds, and then very early recruited in the metazoans Here we report the expression and purification of recombinant geodin and its thermodynamic and spectroscopic characterization, and ... investigated: the soluble fraction (S preparation) and the pelleted fraction, after solubilization and renaturation (see Methods), called IB preparation The S and IB preparations were fractionated in ... purified from the IB preparation; lane 4, geodin purified from the S preparation 1024 Fig Gel filtration on Superdex G-75 of the proteins from the S preparation (A) and the IB preparation (B) from...
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cdna preparation and characterization
... treatment, phenol-chloroform and chloroform extraction, and ethanol precipitation following standard procedures; first- and second-strand cDNA primers (see text for sequence and preparation) Kits: A ... cDNAs and are free of contaminating first-strand primer The subsequent fractions contain only short cDNAs and first-strand primer and should be discarded to prevent introducing short cDNAs and ... incorporation)/100 = micrograms of first-strand cDNA synthesized Organic Phase Extraction and eDNA Precipitation Transfer both the "hot" and "cold" first-strand synthesis (tubes B and C) to a centrifuge tube...
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Preparation and characterization of bimodal magnetofluorescent nanoprobes for biomedical application
... M B and Peng X G 2003 J Am Chem Soc 125 12567 Bailey R E and Nie S 2003 J Am Chem Soc 125 7100 Pong B K, Trout B L and Lee J Y 2008 Langmuir 24 5270 Mao W Y, Guo J, Yang W L Wang C C He J and ... room temperature and abundant ethanol was added to the solution to precipitate Fe3 O4 nanoparticles The Fe3 O4 nanoparticles were separated by centrifugation and washed with hexane and ethanol several ... three hours The Fe3 O4 /SiO2 nanoparticles were collected by centrifugation and washed with water and ethanol several times, and then redispersed in 10 mL of ethanol After that, 0.05 mL of APS was...
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Báo cáo hóa học: " Preparation and characterization of superhydrophobic surfaces based on hexamethyldisilazane-modified nanoporous alumina" pptx
... hydrogen peroxide and distilled water to hydroxylate the surface, and then dried [10-14] In contrast, our sample preparation procedure includes only boiling the sample in distilled water and drying ... FTIR 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 ... meta-, and para- xylane by flow injection-Fourier Transform Infrared Spectroscopy Analyst 1992, 117:1849 doi:10.1186/1556-276X-6-487 Cite this article as: Tasaltin et al.: Preparation and characterization...
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Báo cáo hóa học: "Preparation and characterization of carbon nanofluid by a plasma arc nanoparticles synthesis system" pot
... TPT and CMC designed the experiment CMC and FYP fabricated the sample TPT and CMC carried out the measurements TPT analyzed the measurements TPT and CMC wrote the paper All authors read and approved ... Philips, Holland, the Netherlands) and a field emission scanning electron microscope (FE-SEM, 1530, LEO, Carl Zeiss Smt Ltd., Cambridge, UK) to identify microstructural properties a b Method and procedure ... determine clustering and suspension performance Regarding the analysis of materials, the dry nanoparticles were obtained by centrifuge and heating the nanofluid to the appropriate speed and temperature...
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Báo cáo hóa học: " Preparation and characterization of spindle-like Fe3O4 mesoporous nanoparticles" pot
... Electron Microscopy and School of Physics and Technology, Wuhan University, Wuhan 430072, P R China Authors’ contributions SZ participated in the materials preparation, data analysis and drafted the ... the manuscript WW, XX and JZ participated in the sample characterization FR conceived and co-wrote the paper CZ participated in its design and coordination All authors read and approved the final ... while the fingerprint bands at 1037.89, 1004.85, 967.99, and 928.40 cm -1 could be related to PO43- anions [32] In the curve b, there is an absorption band at 971.16 cm-1 This band is attributed to...
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Báo cáo hóa học: "Preparation and Characterization of Silica-Coated Magnetic–Fluorescent Bifunctional Microspheres" ppt
... microstructure and morphology of the Fe3O4/SiO2 and MPQDs sample, SEM and TEM observations were carried out, and the results of the Fe3O4/SiO2 and MPQDs samples are shown in Figs and respectively ... line, and h was the diffraction angle Based on the FWHM of (3 1) Fe3O4 and (111) zinc blende reflection, the averaged crystallite sizes of Fe3O4 and Mn2±:ZnS/ZnS were estimated to be 14 and nm ... QDs and MPs with silica has led to improved stability, lower toxicity, and higher biocompatibility, and protection of the QDs against corrosion by the biological buffer In addition, the rich and...
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Báo cáo hóa học: " Preparation and Characterization of Covalently Binding of Rat Anti-human IgG Monolayer on Thiol-Modified Gold Surface" ppt
... the method of preparation and fabrication of rat anti-human IgG protein layer on MHA-modified gold substrate, as well as its characterization by contact angle measurements, AFM, GIXRD and XPS, respectively ... Taiwan), and all measurements were performed under room temperature (*25 °C) and ambient humidity One microliter of Milli-Q water was deposited at random locations on the surface to be measured, and ... lm lm 123 1406 molecules and gold substrate and (3) the pH, temperature and ion strength may affect the protein activity Therefore, in the present study, the temperature and pH for protein immobilization...
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Preparation and characterization of tio2 nanotube arrays via anodization of titanium films deposited on FTO conducting glass at room temperature
... Fig.1 (a) Top and (b) cross-sectional FESEM images of Ti film and the corresponding (c) XRD pattern and (d) EDX spectrum film is deposited at appropriate high sputtering power and low sputtering ... treatment temperature and the responsive currents are constant at 0.03, 0.38, 1.55, and 4.88 µA under dark condition and then drastically increase to 1.74, 6.48, 9.78, and 7.95 µA under UV illumination, ... Tian, X L Rare Metal Materials and Engineering, 2008, in press 20 Raja, K S.; Gandhi, T.; Misra, M Electrochemistry Communica- tions, 2007, 9: 1069 21 Macak, J M.; Hildebrand, H.; Marten-Jahns,...
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Preparation and characterization of ferroelectric thin films for tunable and pyroelectric applications
... constant and loss tangent measured at 100 Hz frequency, and (b) Temperature dependence of pyroelectric coefficient (p) and figure of merit (FD) measured at 50 kV/cm and 100 Hz frequency for BTS and ... my colleagues and friends in Materials Science group I really appreciate Dr Zhang Zhen for his kind help to tell me how to use PLD and other equipments when I just came to the Lab, and the later ... dielectric and pyroelectric properties shows that both LNO and BTS thin films are under tensile stress and they decrease with increasing thickness of the BTS films Larger dielectric constant and higher...
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Preparation and characterization of new magneto optical crystals for optical communication
... ( ϖ + and ϖ -) arise, corresponding to the righthand and the left-hand circular oscillations when there is a magnetic field in the medium Theory shows that ϖ ± =ϖ ± eH 2mc 1.7.11 where e and m ... crystal in the 1550 nm band 115 CONCLUSION .124 REFERENCE .127 v viii Abstract Name: Zhang Guangyu Degree: Ph.D Thesis title: Preparation and characterization of ... communication band This thesis was to explore the contributions from the Ho3+, Yb3+, Tb3+, Bi3+ and Ce3+ in the garnet crystals to the Faraday rotation (FR), and FR’s stability against wavelength and temperature...
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chemistry of superconductor materials; preparation, chemistry, characterization and theory, vanderah, 839pp
... Chemistry of superconductor materials : preparation, chemistry, characterization and theory / edited by Term11 A Vanderah p cm Includes bibliographical references and index ISBN O-8155-1279-1 ... HANDBOOK: by by James J Licari and Leonard R HANDBOOKOFTHfNFllMOEPOSmONPROCESSESANDTH=HNIQUES:editedbyKlaus K Schuegraf AND EPlTAXYz by Toshinori Takagi -BEAM- MFFUSK)NPHENOMENAINTHiNFli_MBANDMICROELECTRONK=MATEFU_Seditedby ... Electronic Materials and Process Technology DEposmoNTEcHNoLoGlEs FILMS FCX ANDCCXllNG!k by CHEMK%L VAPOR EPOSTKM FOR m Rointan F Bunshah et al by Arthur Sherman SEMKX)NDUCTORMATEFUMBANDP#XTSS~YHANDBOOK:edited...
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Báo cáo khoa học: In vitro selection and characterization of a stable subdomain of phosphoribosylanthranilate isomerase potx
... selection and characterization of trPRAI therefore constitutes support for the identity of the putative (ba)1)5b6 folding intermediate in PRAI and perhaps suggests that the (ba)1)4, (ba)1)6 and ... whole cell-based screening or selection, and only slight improvements in the desired activities were observed It seems apparent that more ambitious loop replacement and randomization strategies will ... linked to in vivo, life or death selection [15] The limitations of in vivo screens and selections could be overcome by the development of an effective in vitro selection methodology Significantly,...
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Báo cáo hóa học: " Preparation of monolayers of [MnIII6CrIII]3+ singlemolecule magnets on HOPG, mica and silicon surfaces and characterization by means of noncontact AFM" pptx
... [MnIII6CrIII]3+ and whether these layers are crystalline or amorphous [16-19] Experiment Preparation was carried out in air at room temperature (21 ± 1°C) and air moisture between 40% and 60% via ... contributions AG and HP carried out the AFM measurements supervised by AB and UH CD carried out the XPS measurements supervised by MN VH and EK synthesized the SMMs supervised by TG All authors read and approved ... doi:10.1186/1556-276X-6-486 Cite this article as: Gryzia et al.: Preparation of monolayers of [MnIII6CrIII] 3+ single-molecule magnets on HOPG, mica and silicon surfaces and characterization by means of non-contact...
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