nanoparticles prepared by various routes

... particles produced by chemical reduction shifted to 440 nm as compared to 400 nm by laser ablation The peak width of silver nanoparticles by laser ablation is narrower than that by chemical reduction ... absorption spectrum was measured by a Shimadzu UV-2450 spectrometer The TEM micrograph was taken by a JEM 1010-JEOL The size of the nanoparticles was determined by ImagieJ 1.37v software of Wayne ... electron micrograph of silver nanoparticles obtained by a transmission electron microscope (TEM) was shown in Fig The spherical shape of the nanoparticles observed by TEM is consistent with the...

Ngày tải lên: 22/03/2014, 11:20

... La0.7Sr0.3MnO3 nanoparticles (*30 nm) synthesized by citrate-gel route reported by Rajagopal et al [12], and higher than the value of 23 emu/g for La0.7Sr0.3MnO3 nanoparticles (*48 nm) synthesized by sol–gel ... test of the LSMO nanoparticles with 0.2 B x B 0.4 prepared at the temperature conditions of 600, 700, 800, and 900 °C are shown in Fig The results indicated that the prepared LSMO nanoparticles ... room temperature before being ground to obtain LSMO nanoparticles The crystal structure of the synthesized LSMO nanoparticles was characterized by X-ray diffraction (XRD) (Philips PW3040, The Netherlands)...

Ngày tải lên: 22/06/2014, 00:20

... kV was used to examine the size and distribution of the CNT surface of various samples The TEM specimens were prepared by placing a few drops of the sample solution on a lacey carbon grid Scanning ... this article as: Kumar et al.: A study on the effect of different chemical routes on functionalization of MWCNTs by various groups (-COOH, -SO3H, -PO3H2) Nanoscale Research Letters 2011 6:583 ... functionalized with different chemical groups (-COOH, -SO3H, -PO3H2) using various single- and double-step chemical routes The effect of dispersion using Triton X-100 via ultrasonication, before...

Ngày tải lên: 20/06/2014, 22:20

... nanoparticles were collected by centrifugation and the silica coated iron oxide nanoparticles were denoted as FS nanoparticles The surfaces of FS nanoparticles were modified with amino group by ... for 40 min, NaHSe prepared by 6.0 mg Te and 6.0 mg NaBH4 was added After h stirring, it was refluxed for h Silica coated iron oxide nanoparticles were prepared as described by our previous work ... of the final multifunctional nanoparticles was studied by VSM measurement As shown 123 by Fig 4, the coercivity of the FSCS nanoparticles was zero It indicated the nanoparticles were superparamagnetic...

Ngày tải lên: 22/06/2014, 00:20

... reported In a study by Onodera et al (1995), by analyzing the decomposition products of fenitrothion, fenitrothion-oxon was detected, showing that it was non-mutagenic In a study by Setsuda et al ... composite sample was prepared by subjecting the AC aqueous solution to the biodegradation test The biodegradation test was conducted based on the Biodegradation Test of Chemical Substance by Microorganisms ... an upward flow at 0.2 mL/min and collect mL eluent after water is displaced by DMSO Sterilize by filtration Evaluate by the Ames Salmonella mutagenicity assay (preincubation method) Fig - Concentration...

Ngày tải lên: 05/09/2013, 09:38

... = of the solution was controlled by H2SO4 After deposition, FePt nanoparticles were collected by using a centrifuge (Hettich Universal 320, 9000 RPM, 20 min) Nanoparticles were dried in air at ... images of the as -prepared (left) and annealed (right) FePt nanoparticles (700°C/1 h) Figure is the TEM images of typical as -prepared and annealed samples Particle size of the asprepared FePt sample ... is a promising method to make FePt magnetic nanoparticles FePt nanoparticles made by this technique had the size of 10 - 20 nm After annealing, the nanoparticles N.H Luong et al / VNU Journal...

Ngày tải lên: 13/02/2014, 03:20

... The Project Gutenberg EBook of Glaucoma, by Various This eBook is for the use of anyone anywhere at no cost and with almost no restrictions ... Author: Various Editor: Willis O Nance Wesley Hamilton Peck Release Date: November 19, 2007 [EBook #23544] Language: English *** START OF THIS PROJECT GUTENBERG EBOOK GLAUCOMA *** Produced by Bryan ... administration, and explanation of their action (b) Reduction of increased intra-ocular tension by means of various mechanical measures, notably massage, vibration massage, suction massage, electricity...

Ngày tải lên: 06/03/2014, 15:20

... The Project Gutenberg EBook of Glaucoma, by Various This eBook is for the use of anyone anywhere at no cost and with almost no restrictions ... Author: Various Editor: Willis O Nance Wesley Hamilton Peck Release Date: November 19, 2007 [EBook #23544] Language: English *** START OF THIS PROJECT GUTENBERG EBOOK GLAUCOMA *** Produced by Bryan ... administration, and explanation of their action (b) Reduction of increased intra-ocular tension by means of various mechanical measures, notably massage, vibration massage, suction massage, electricity...

Ngày tải lên: 06/03/2014, 16:20

... lamps on When directed by a flagperson or any traffic control device at railroad crossings When directed by a flagperson at a construction site, or at anytime when directed by a police officer When ... service driver license office by successfully passing the vision and written tests only The holder of the permit may operate a passenger car at any time if accompanied by an adult who has a valid ... service driver license office by successfully passing the vision and written tests only The holder of the permit may operate a motorcycle at any time if accompanied by an adult who has a valid...

Ngày tải lên: 16/03/2014, 12:20

... silicon wafer by manipulating four tungsten probes in a vacuum Fig shows how to measure the electrical resistance of a SiNW by the probes The SiNWs had enough stiffness to be held by the probes ... voltage After the measurement of the electrical resistance by the 2-terminal method shown in Fig 6, the silicon wire was fractured by bending The fractured surface indicated the cleavage showing ... surrounded by a thin oxide film of 5–20 nm in thickness Discussion As seen in Figs and 3, the SiNW consists of a silicon core and silicon oxide on the surface The resistivity measurement by the 4-terminal...

Ngày tải lên: 16/03/2014, 15:05

... P McLean Greene Hoosier and the Salt Pile, The Danforth Marble How “Ruby“ Played George W Bagby Letter, A Petroleum V Nasby Lost Word, The John Paul Love Sonnets of a Hoodlum Wallace Irwin Mr ... noble and beautiful woman is, what a manly man, —when I reel, dazzled by this glare, drunken by these perfumes, confused by this alluring music, and reflect upon the enormous sums wasted in a ... them by the side of their chairs for occasional refreshment during the dance The dizzy hours staggered by “Azalia, you must come now, “ had been already said a dozen times, but only as by the...

Ngày tải lên: 16/03/2014, 15:20

... investment through both the creation of middle-class jobs and by lowering transportation costs for American households; and There is strong demand by the public and businesses for additional transportation ... prevented than by opening speedy and easy communications through all its parts Good roads and canals will shorten distances, facilitate commercial and personal intercourse, and unite, by a still ... but for unrelated reasons Determining causality is difficult A study by John Fernald makes progress on establishing causality by comparing the impact of infrastructure investment on industries...

Ngày tải lên: 17/03/2014, 08:20

... at public institutions increased by 58 percent between 1991 and 2013, from $1,840 to $2,910 Average net tuition at private non-profit institutions increased by 25 percent between 1991 and 2013, ... enrollment per school By contrast, the number of for-profit institutions has almost doubled since the mid-1990s In 1997, there were about 600 proprietary schools in the United States, but by 2010 there ... (Turner, 2011) 32 By convention, loans not factor into net price since, from the perspective of students and their families, they not necessarily lower the total cost paid by the student Also,...

Ngày tải lên: 17/03/2014, 08:20

... sets of trees derived by IG's (like those of TAG's) are context-free languages Trees derived by IG's exhibit a property that is not exhibited by the trees sets derived by TAG's or CFG's Informally, ... is bounded by the grammar (in fact the maximum cardinality of a tree set determines this bound) Hence, trees shown in Figure can not be generated by any MCTAG (but can be generated by an IG) because ... strncV.tres by substrings and the composition operation by its effect on subswings is related to the work of Rounds (1985) Although embedding this version of LCFRS's in the framework of ILFP developed by...

Ngày tải lên: 17/03/2014, 20:20

... transmission electron microscopic (TEM) studies, the sample was prepared by crushing them mechanically with a mortar and pestle followed by dispersing the powder ultrasonically in absolute ethanol ... nanorods were produced by heating the tungsten filament in an inert atmosphere either in the presence of oxides like SiO2 [22], B2 O3 [23] or in the presence of water vapour [20] or by IR irradiation ... characterised by high-resolution transmission electron microscopy (FEI Tecnai F30 ST operated at an extraction voltage of 300 kV, equipped with an EDXA energy dispersive X-ray spectrometer) and by selected...

Ngày tải lên: 19/03/2014, 16:48

... Si-doped TiO2 photocatalysts were prepared by hydrothermal process The photocatalytic activity of Si-doped TiO2 was higher than that of Degussa P25 and pure TiO2 prepared by the same method when the ... were obtained by using Cu K␣ radiation, using a Rigaku D/MAX RA instrument at 40 kV and 150 mA with the angle of 2Â from 20◦ to 80◦ The surface areas were measured by N2 adsorption by the BET method ... experiments, the weight of coated TiO2 was 0.5 g ± 10% The samples thus prepared were labeled as Si(x)/TiO2 Pure TiO2 catalyst was prepared by the same method without the addition of ethyl silicate and...

Ngày tải lên: 20/03/2014, 13:06

... achieved by reduction at À1 V vs SCE, and the bleached state was obtained by oxidization at +1 V vs SCE The response of color change to the potential on the working electrode was evaluated by the ... of an electrochromic device by template synthesis of the active layers, Thin Solid Films 460 (2004) 300–305 [3] A.A Michel, Electrochromism in materials prepared by the sol–gel process, J Sol–Gel ... observing the internal microstructure here by the thin section due to the inferior discrimination, and so the microstructure property was still unknown by the SEM image 3.3 Microstructure In order...

Ngày tải lên: 20/03/2014, 13:08

... nanostructures by laser pyrolysis Int J Nanoparticles 2008;1(3):185–202 [18] Therese HA, Li J, Kolb U, Tremel W Facile large scale synthesis of WS2 nanotubes from WO3 nanorods prepared by a hydrothermal ... [(NH4)10W12O41xH2O] (0.15 mol of W) was prepared and acidified with HNO3 2.2 N (Normal) to produce a pH around and then kept in a flask hermetically sealed with stirring by one week at 60 °C Then, ml of ... model by nitrogen adsorption at −196 °C using the BET isotherm Samples were degassed under flowing argon at 200 °C for h before nitrogen adsorption TEM Table – Crystallite size (ϕ) determined by...

Ngày tải lên: 20/03/2014, 13:08

... that the WO3 thin film sensor prepared by the sol–gel technique can be used to detect TMA gas, e.g the freshness of the fish Acknowledgements This work was supported by the Chinese Natural Science ... sensor is affected by the operating temperature Fig shows the relationship between the gas sensitivity and the operating temperature of WO3 thin film sensor to TMA gas with various concentrations ... gasoline, C2 H5 OH, CH4 and CO and water vapor These results indicate that the WO3 thin film sensor prepared by a sol–gel Fig X-ray photoelectron spectra of the thin film annealed at 500◦ C for 10 h (a)...

Ngày tải lên: 20/03/2014, 13:12

... http://en.wikipedia.org/wiki/Creative_Commons Attribution http://creativecommons.org/licenses /by/ 2.5/ License (abbreviated “cc -by ), Version 2.5 African Virtual University  Table of Contents I Industrial ... processes by means of flow diagrams e Carry out material balances for a simple process Unit 2: Unit Operations and Unit Processes At the end of this unit you should be able to: a List the various ... ammonia is manufactured from methane and air by the Haber process c Describe the Contact process for the manufacture of sulphuric acid d Discuss the various types of fertlizers and the manufacture...

Ngày tải lên: 22/03/2014, 14:20