Characterization methods

Xem 1-20 trên 224 kết quả Characterization methods
  • Due to the enormous progress in computer technology and numerical methods that have been achieved in recent years, the use of numerical simulation methods in industry gains more and more importance. In particular, this applies to all engineering disciplines. Numerical computations in many cases offer a cost effective and, therefore, very attractive possibility for the investigation and optimization of products and processes.

    pdf326p gian_anh 18-10-2012 38 9   Download

  • Metal foams are a new, as yet imperfectly characterized, class of materials with low densities and novel physical, mechanical, thermal, electrical and acoustic properties. They offer potential for lightweight structures, for energy absorption, and for thermal management; and some of them, at least, are cheap. The current understanding of their production, properties and uses in assembled in this Design Guide.

    pdf263p nhatkyvodanh 11-08-2012 30 8   Download

  • The importance of particle characterization in both the research and development, and the manufacture and quality control of materials and products that we use in our everyday lives is, in some sense, invisible to those of us not directly involved with these activities. Few of us know how particle size, shape, or surface characteristics can influence, for example, the efficacy of a painreliever, or the efficiency of a catalytic converter, or the resolution of a printer.

    pdf410p chuyenphimbuon 21-07-2012 24 5   Download

  • An ultimate goal of modern biology is to understand how the genetic blueprint of cells (genotype) determines the structure, function, and behavior of a living organism (phenotype). At the center of this scientific endeavor is characterizing the biochemical and cellular roles of proteins, the working molecules of the machinery of life. A key to understanding of functional proteins is the knowledge of their folded structures in a cell, as the structures provide the basis for studying proteins’ functions and functional mechanisms at the molecular level....

    pdf407p chuyenphimbuon 21-07-2012 11 4   Download

  • This work presents the preparation of nanocomposite TiO2/SnO2 films by using spray pyrolysis and followed by sol-gel technique from TiCl4 and SnCl4 solutions. Obtained films were characterized by XRD, SEM and photoconductivity measurement. It was found that in this method the nanocomposite TiO2/SnO2 films were constituted of nanosized TiO2 and SnO2 surrounded the TiO2 grains. The obtained nanocomposite TiO2/SnO2 materials were shown to have the photoconducting properties.

    pdf5p tuanlocmuido 19-12-2012 27 3   Download

  • Electrochemical systems—e.g., batteries, capacitors, and fuel cells—are an integral part of modern technology. Electrochemical techniques, especially potentiometry and voltammetry, are indispensable for state-of-the-art analysis, and also for fundamental studies of the properties of solution species and solid phases and materials. Last, but not least, electrochemical concepts for understanding charge transfer reactions entered the fields of biochemistry and biophysics.

    pdf177p coeus75 29-01-2013 31 2   Download

  • This opinion paper discusses subjective natural language problems in terms of their motivations, applications, characterizations, and implications. It argues that such problems deserve increased attention because of their potential to challenge the status of theoretical understanding, problem-solving methods, and evaluation techniques in computational linguistics. The author supports a more holistic approach to such problems; a view that extends beyond opinion mining or sentiment analysis.

    pdf6p hongdo_1 12-04-2013 13 2   Download

  • Structural Characterization of Crystalline and Non-crystalline Materials – A Brief Background of Current Requirements The X-ray powder diffraction technique is a well-established and widely used method for both qualitative and quantitative analysis of various substances in a variety of states (see, for example, [1]). However, in a multi-component mixture with a relatively complicated chemical composition, we frequently find difficulty in identifying the individual chemical constituents by the conventional X-ray powder diffraction method.

    pdf212p gian_anh 18-10-2012 10 1   Download

  • This paper addresses the problem of acquiring lexical semantic relationships, applied to the lexical entailment relation. Our main contribution is a novel conceptual integration between the two distinct acquisition paradigms for lexical relations – the patternbased and the distributional similarity approaches. The integrated method exploits mutual complementary information of the two approaches to obtain candidate relations and informative characterizing features.

    pdf8p hongvang_1 16-04-2013 21 1   Download

  • Food analysis is the discipline dealing with the development, application and study of analytical procedures for characterizing the properties of foods and their constituents. These analytical procedures are used to provide information about a wide variety of different characteristics of foods, including their composition, structure, physicochemical properties and sensory attributes.

    doc114p timhoaca 20-06-2010 178 124   Download

  • Gingivitis and periodontitis are the two main periodontal diseases and may be present concurrently. Gingivitis is a form of periodontal disease in which gingival tissues are inflamed but their destruction is mild and reversible while periodontitis is a chronic inflammatory response to the subgingival bacteria with irreversible changes (Armitage, 1999). Periodontium destruction is characterized by loss of connective tissue attachment and bone around the teeth in conjunction with the formation of periodontal pockets due to apical migration of the junctional epithelium (Champagne et al.

    pdf42p pt_1669 26-03-2012 225 67   Download

  • This book comprises the contributions of several authors in the area of polymer characterization by atomic force microscopy of the polymer network structure formed in Ferroelectric Liquid Crystals Cells; polymerization by microwave irradiation method of starch/acrylic acid/acrylamide; polymerization of olefins; emulsion polymerization; ring opening polymerization; cationic polymerization of vinyl monomers ; block and graft copolymerization by controlled/living polymerization; fabrication of doped microstructures by two-photon polymerization; rheology of biomaterials; plant cell wall ...

    pdf436p greengrass304 18-09-2012 90 37   Download

  • This volume is an update of the book, Soil Sampling and Methods of Analysis, first published in 1993. The aims of this second edition remain the same as those of the earlier edition—to provide a compilation of soil analytical and sampling methods that are commonly used, straightforward, and relatively easy to use. The materials and procedures for these methods are presented with sufficient detail and information, along with key references, to characterize the potential and limitation of each method....

    pdf1240p 951628473 07-05-2012 134 30   Download

  • A soft ground condition exists whenever construction loads a cohesive foundation soil beyond its preconsolidation stress, as often occurs with saturated clays and silts having SPT blow counts that are near zero. The paper recommends testing programs, testing methods and data interpretation techniques for developing design parameters for settlement and stability analyses. It hopes to move the state-of-practice closer to the state-of-the-art and thus is intended for geotechnical practitioners and teachers rather than researchers.

    pdf60p bryant_an89 18-05-2010 174 22   Download

  • As human beings currently use or appropriation of approximately 40% (through deforestation and land-use change) land production capacity, accurate account of all existing and potential biomass energy road use is important to chart the way forward in global scale, and in different areas. With the complexity of biomass as a source of many end products, food, this volume shed light on all topics related to biomass highlight new and review existing methods of production, its detection and usage....

    pdf558p samsungwifi 04-04-2012 86 23   Download

  • Plant response to reduced water availability and other abiotic stress (e.g. metals) have been analysed through changes in water absorption and transport mechanisms and also by molecular and genetic approach. A relatively new aspects of fruit nutrition are presented in order to provide the basis for the improvement of some fruit quality traits. The involvement of hormones, nutritional and proteomic plant profiles together with some structure/function of sexual components have also been addressed.

    pdf398p conquynho32 14-09-2012 69 28   Download

  • Advanced Computer-Assisted Techniques in Drug Discovery edited by Han van de Waterbeemd .Methods and Principles in Medicinal Chemistry Edited by R. Mannhold P. Krogsgaard-Larsen H. Timmerman Volume 1 Hugo Kubinyi, QSAR: Hansch Analysis and Related Approaches Volume 2 Han van de Waterbeemd (ed.), Chemometric Methods in Molecular Design Volume 3 Han van de Waterbeemd (ed.), Advanced Computer- Assisted Techniques in Drug Discovery .Methods and Principles in Medicinal Chemistry edited by R. Mannhold, P. Krogsgaard-Larsen, H.

    pdf361p maket1311 16-10-2012 30 13   Download

  • The milk production system in Pakistan is characterized by large numbers of small, geographically dispersed dairy producers who have marketable surpluses of milk but face diseconomies of scale in marketing it to demand centers in distant urban areas. The traditional middlemen who procure milk from rural areas close to the cities offer at best modest returns to the farmers. In the past couple of decades, two institutional developments have taken place in the milk processing sector.

    pdf368p conduongdinhmenh 07-05-2013 46 12   Download

  • Nanomaterials, characterized by at least one dimension in the nanometer range, can be considered to constitute a bridge between single molecules and infinite bulk systems. Besides individual nanostructures involving clusters, nanoparticles, quantum dots, nanowires and nanotubes, collections of these nanostructures in the form of arrays and superlattices are of vital interest to the science and technology of nanomaterials.

    pdf761p xrzc1-1 18-09-2013 71 13   Download

  • RNA turnover and processing have now been demonstrated to be important steps that directly affect protein synthesis and the cell’s ability to survive in nature. However, the analysis of mRNA decay and polyadenylation in Escherichia coli has long been considered technically difficult. The development over the past 15 years of methods for the isolation and characterization of both mRNA and polyadenylated species has made the study of these important pathways of RNA metabolism more straightforward (Arraiano et al., 1988; O’Hara et al., 1995; Mohanty and Kushner, 1999)....

    pdf584p maket1311 16-10-2012 41 11   Download

CHỦ ĐỀ BẠN MUỐN TÌM

Đồng bộ tài khoản