metallurgically manufactured materials for microwave mechanics

... and free space Therefore, general metallic magnetic materials are also not suitable candidates for microwave absorption Table 1-1 Properties for ferrites and metallic magnetic materials μ i is the ... symbols are for Vc =25 %, red for 35 %, green for 40 % and blue for 50 % 99 Fig 5-7 Reflection characteristics at the optimum thickness composites of BaCo0.7Zn1.3Fe16O27 with various Vc for 100 Fig ... The dependence of fup, flow and W on t for composites of BaCoZnFe16O27 with various Vc: black symbols are for Vc =25 %, red for 35 %, green for 40 % and blue for 50 % 102 Fig 5-9 Absorbing characteristics...

Ngày tải lên: 14/09/2015, 22:00

... Vietnamese equivalents for the English terms The thesis aims to draw out common translation strategies which can be applied in the English-Vietnamese translation of terms in materials for mechanical ... Mechanical Engineering The thesis studies the English – Vietnamese translation of terms in the materials for Mechanical Engineering First, the thesis collects and groups English Mechanical Engineering ... translation in mechanical engineering, dictionaries editing, English language teaching as well as for the standardization of Vietnamese mechanical engineering terminology ...

Ngày tải lên: 07/09/2013, 13:04

... when using online materials for their listening lessons The most common reason for using online materials as supplementary materials is to keep students informed about the information and the ... in spoken form or in written form 2.2.2 How authentic materials have been used in language teaching The use of authentic materials in EFL classroom is what teachers are involved in foreign language ... likenesses and differences in sounds • Listening for specific information • Listening for organizing ideas • Listening for main points • Listening for varied points of view • Critical listening...

Ngày tải lên: 07/09/2013, 13:37

... enforcement of safety belts (i.e., where motorists can be stopped for not using safety belts), materials destined for distribution in those states should include information about primary enforcement ... item for their audience and how to modify for their particular community materials that were developed for a broader audience -- Critical Expertise You Need Developing an effective material for ... child safety seats for low-income families) • Enforcement and legislation: Enacting and enforcing laws (e.g., those related to safety belt use and impaired driving) For sources of information on effective...

Ngày tải lên: 16/01/2014, 22:20

... terms in many materials for mechanical engineering The study concentrates on typical English terms and their Vietnamese equivalents in some materials for mechanical engineering The materials are ... types of modulation Some examples are: abstract for concrete, cause for effect, one part for another, reversal of terms, active for passive, space for time, intervals and limits, change of symbols ... negative is not as forceful as the positive; in fact the force of the double negative depends on the tone of voice, and therefore the appropriateness of this modulation must depend on its formulation...

Ngày tải lên: 29/01/2014, 10:43

... for transforming graphite and disordered forms of carbon into diamond The diagram has been revised and reviewed at regular intervals [59-611 and a simplified form of the most recent diagram for ... transformation diagram for carbon has been reviewed by Sekine [69] 14 Carbon Films The transformations between one form of carbon and another can be classified as follows: a) solid-solid transformations, ... quenching Transformationof the metastable forms to the thermodynamically stable form (i.e., graphite under ambient conditions) is kinetically limited by the high activation energy for the transformation...

Ngày tải lên: 13/02/2014, 11:20

... social formulae • Providing personal information • Providing general factual information • • • • • Eliciting general factual information Expressing needs, wants, likes and dislikes Eliciting information ... your answer sheet Read "Information for New Students" below and answer the questions that follow Write your answers in boxes 15-20 on your answer sheet INFORMATION FOR NEW STUDENTS FIRE NOTICE ... accommodation for post-graduate studies It also occupies three houses in Sydney Place, which are used for studio and workshop accommodation for part-time courses in the Visual Arts and for the Foundation...

Ngày tải lên: 18/02/2014, 20:59

... for transforming graphite and disordered forms of carbon into diamond The diagram has been revised and reviewed at regular intervals [59-611 and a simplified form of the most recent diagram for ... transformation diagram for carbon has been reviewed by Sekine [69] 14 Carbon Films The transformations between one form of carbon and another can be classified as follows: a) solid-solid transformations, ... quenching Transformationof the metastable forms to the thermodynamically stable form (i.e., graphite under ambient conditions) is kinetically limited by the high activation energy for the transformation...

Ngày tải lên: 05/03/2014, 15:20

... for transforming graphite and disordered forms of carbon into diamond The diagram has been revised and reviewed at regular intervals [59-611 and a simplified form of the most recent diagram for ... transformation diagram for carbon has been reviewed by Sekine [69] 14 Carbon Films The transformations between one form of carbon and another can be classified as follows: a) solid-solid transformations, ... quenching Transformationof the metastable forms to the thermodynamically stable form (i.e., graphite under ambient conditions) is kinetically limited by the high activation energy for the transformation...

Ngày tải lên: 14/03/2014, 16:20

... have a range of H2/CO ratios.20 The H-to-C mole ratios for some carbon feedstock materials are about 0.1 for wood, for coal, for oil, and for methane.10 In general, the higher the hydrocarbon ... Gasification for H2 Production 16 Syngas for Chemical Processing 22 Materials of Construction 23 1.11.1 Liners for Gas or Liquid Feedstock 25 1.11.2 Liners for Solid ... California Materials for the Hydrogen Economy G J Thomas U.S Department of Energy Washington, DC Paul Trester General Atomics San Diego, California Bunsen Wong General Atomics San Diego, California...

Ngày tải lên: 14/03/2014, 16:20

... as Algorithm We want to prepare efficient courseware for learning a target vocabulary We defined efficiency in terms of the amount of reading materials that must be read to learn a required vocabulary ... been proven to be quite efficient in information retrieval Readers are referred to papers by the Text REtrieval Conference (TREC, http://trec.nist.gov/), for example 118 Vocabulary We used the ... likely to be sufficiently exposed to efficiently learn the target vocabulary service (19), form (17), information (12), feature (12), operation (11), cost (11), individual (10), department (10),...

Ngày tải lên: 17/03/2014, 06:20

... positive, and therefore k is always real For this to be true we are excluding solutions where –E > Vo For the exterior region, the wave equation similarly can be put into the form d 2ψ (x) − κ ... estimate the magnitude of the energy levels for electrons in an atom, for which m = 9.1 x10-28 gm and L ~ x 10-8cm, and for nucleons in a nucleus, for which m = 1.6x10-24 gm and L ~ 5F The energies ... wave function For almost all our discussions the time-independent form of the Schrödinger equation is needed This is obtained by considering a periodic solution to (2.16) of the form Ψ(r , t )...

Ngày tải lên: 17/03/2014, 14:38

... to form printable ink The ink was deposited on sensor microheater platform, dried for 15 at 150 ◦ C and annealed at 700 ◦ C for 15 to reach the stabilization of the material The sensor platforms ... operating time for different propane concentrations The highest signal drift is obtained for sensing materials on the basis of commercial SnO2 The highest contribution to the signal deviation for both ... Micromeritics ASAP 2010 surface analyzer Before analysis, all the samples were degassed in vacuum at 393 K for h 2.2 Sensor fabrication Both synthesized and commercial SnO2 materials were impregnated with...

Ngày tải lên: 19/03/2014, 16:47

... Unlike perovskite materials such as PZT described earlier, the materials are not ferroelectric in nature and cannot be poled Therefore, interest in these materials is primarily in the form of thin ... bars the materials are homogenized at about 1000 8C for 24 h and ordered at 800 8C for another 20 h Information about the effect of heat treatment on the crystal structure and the transformation ... (typically

Ngày tải lên: 20/03/2014, 13:05

... p-type at 1/250 wt% For the measurements performed at 250 ◦ C, the response time to 100 ppb and to 500 ppb of NO2 was around both for the hybrid materials based on WO3 and for the pure WO3 sensors ... Specifically, these concentrations were: 100, 200, 500 and 1000 ppb for NO2 ; 10 and 50 ppm for CO; 2, and 10 ppm for NH3 and 50 and 150 ppm for C6 H6 To assess the reproducibility of the results, each ... [11] On the other hand, metal oxides are well-known materials suitable for detecting a wide spectrum of gases with enough sensitivity Among these materials, SnO2 and WO3 have proved to be very suitable...

Ngày tải lên: 20/03/2014, 13:05

... chemistry was mandatory for the final optimization of the device performance For this reason there are some basic parameters that need to be taken into account when new semiconductor materials are to ... the growth process, more and more these materials were used for the development of sensors The silicon era In the late 1960s, the use of silicon as a matrix for integrated sensor–transducer systems ... semiconductor substrates In recent years there is an intense effort in the design of new semiconductor materials other than Si, for use in power electronics and other microelectronic applications...

Ngày tải lên: 20/03/2014, 13:05

... S s 5.40 for 30-ppm NH and S s 4.00 for 40-ppm NO; WO q wt.% Mg, Zn, Mo and Re: S s 7.65, 5.06, 10.1, 9.46, respectively, for 30 ppm NH , and S s 5.87, 8.33, 5.00, 6.25, respectively, for 40 ppm ... alkali earth metals The materials of WO loaded with wt.% Mg, Zn, Mo and Re showed good responses both to NH and NO, and can be used for NH and NO gas sensors As a whole, these materials have low resistance ... (2000) 74–76 Conclusions The sensing materials of WO loaded with wt.% metal oxides were prepared and applied for NH and NO detection, and several composition materials with good responses, both...

Ngày tải lên: 20/03/2014, 13:08

... significantly at a slower rate for the TiO2 nanotubes compared with P25 Thus, the reaction rates for the photocatalytic oxidation are lower for the nanotubes than for P25 The results for the conversion of ... XRD 3.2 Activity of the photocatalysts for propene oxidation at low concentration The photocatalytic performance of these new materials was investigated for the oxidation of propene at low concentration, ... rate for the all photocatalysts Fig Propene oxidation using 60 ml/min flow rate for the three hybrids (a) The difference in performance between the anatase and rutile nanotubes was observed for...

Ngày tải lên: 20/03/2014, 13:11

... between two adjacent panels in using MCNP Therefore, there will be more diviation for very light materials such as paper in comparison with heavier materials such as stainless steel or aluminum ... program for simulating backscattering effect of gamma-ray in the case of the dedicated system of MYO-101 with using scintillation detector of Yap(Ce) From the initial results performed for several materials ... simulation of measuring intensity for thickness of materials by the system of MYO-101 with using code of MCNP; ii) experimental measure on the thicknesses of light materials (such as paper, plastic,...

Ngày tải lên: 22/03/2014, 11:20

... Group, LLC DK3212_C001.fm Page Thursday, August 10, 2006 9:33 PM Reinforcement Materials 1.0 Reinforcement Materials — Rigid Materials that fall into this category include woven glass, chopped ... z-direction expansion of Kevlar-reinforced laminates is greater than for an equivalent epoxy or polyimide glass-reinforced material References Arlon Materials for Electronics Division, Everything ... been made to publish reliable data and information, but the author and the publisher cannot assume responsibility for the validity of all materials or for the consequences of their use No part...

Ngày tải lên: 23/03/2014, 08:21