für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The use of nanomaterials has extended to a broad range of applications, for example chemical synthesis, microporous media synthesis and catalytic combustion, contributing to achievement of improved or promising results. Electrically -conjugated conducting polymers (CP) and their nanomaterials has been the subject of tremendous interest in recent years because of their unique electrical, mechanical, and physical properties. Here is given different CP (polyaniline, polythiophene, and polypyrrole) nano-meter scale materials/composites synthesis routes by using the in-situ chemical oxidative and/or radiation-induced polymerization method. To enhance the properties of conducting polymers in several orders of magnitudes, different host matrixes (single & multi wall carbon nanotube, activated carbon and metals or metal oxides) are used. The properties of the resultant nanomaterials have been investigated by using various techniques. The overall objectives of this manuscript is to present the versatility of electrically conducting polymer nanomaterials synthesis and their properties improvement mechanism with different host matrixes for increasing their applications capability. ····· 10361133634
für 64.71€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Insulating oil is oil that stable at high temperatures and has excellent electrical insulating properties. It is used in oil-filled transformers, some types of high voltage capacitors, and some types of high voltage switches and circuit breakers. Its functions are to insulate, suppress corona and arcing, and to serve as a coolant. Today, most transformers use a fluid that achieves a much higher performance level than standard naphthenic mineral oil with far less risk. Mineral oils invariably have an issue with corrosive sulphur that can render them problematic in service, and attempts to balance this out with copper passivators are insufficient compared to readily-available, safer alternatives ····· 10361133323
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The radiation synthesis of conductive polymer is a unique technique for producing many desirable biocompatible materials in nanoscale level with magnificent applications due to less impurity and abundant product i.e. commercial product. This book contains sufficient information about the types of polymers, different methods of preparing polymers, and application of polymer generally and specifically the preparation of conductive polymers and polymer doped with nanoparticles metals. The targeting scientific fields are Medical engineering, Medical physics, Polymer processing (membranes suiting Methanol Fuel Cell, Gas separation and Biosensors) ····· 10361133101
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book is devoted to studying the intercalation phase of Montmorillonite nano clay modification and the ions interacting dynamics within the interlayer gallery space of lamellar minerals. This goal is reached in two main steps, firstly we explore qualitatively the nano world of ions and their interactions by combining ideas and results from the three following fields: ionic and molecular chemistry, non relativistic quantum mechanics at nano scale, and classical electromagnetism. Then we construct a toy model using electric dipoles to make some rough theoretical predictions and numerical estimations which may be used to approach empiric results obtained by experimental methods such as X rays diffraction, scanning and tunneling microscopies. The determination of the explicit expression of the hamiltonian leads to compute the exact quantum spectrum of the interacting molecules at the leading order of perturbation. We show that the Van der Waals molecular potential is quantized as (-n-1)+O( ) with = (r /r) , the pulsation of the IR molecules vibration and r the intermolecule distance. ····· 10361132658
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Crude oil, natural gas, and coal are the main sources of energy supply in our daily lives, particularly in transportation. As the world s energy demand is increasing significantly, environmental friendly energy sources, such as solar and wind energy, are essential and hydrogen is the best energy carrier for these kinds of energy sources. However, hydrogen must be stored in the required methods and materials which have been specified by the US Department of Energy and magnesium is one of the most promising candidates for hydrogen storage. The object of this book is enhancement of the hydrogen storage properties of MgH2 using different kinds of catalysts and ball-milling methods. Preparing binary composites such as MgH2-SiC and MgH2-BCC nano-composites and also ternary samples such as MgH2-SiC-Ni and MgH2-BCC-CNT specimen by both planetary and magneto ball milling have shown significant improvements in hydrogen sorption properties of MgH2. The methods and results in this book could help shed some light on the area of hydrogen economy and would be useful for post graduate and graduated students in this area, experimental physicists, and material scientists ····· 10361118632
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The book deals with ion-selective electrodes potentiometric sensors determining the amount of substance in a water mixture. Conducting measurements errors appear. There are plenty of sources of the errors but not all of them must be taken into account during the analysis. However, very often, one is dominant. How to indicate the source How to minimize the uncertainty of measurement The answers are included in the monograph. ····· 10361118185
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Metal adsorption by garden soils as a function of soil solution pH, indicated increasing metal adsorption with pH. At pH 5.0 more Pb was adsorbed than Zn or Cd. Soluble Zn, Pb and Cd concentrations in soils after 600 hours of reactions decreased almost linearly with pH. This was attributed to increasing charge density of the soils and the hydrolysis of metal cations. At pH below 6.5, the likely control on Zn2+ activities in soil solution was Franklinite (ZnFe2O4), but between pH 7 and 9, Zn2+ activities in soil solution approached the solubility isotherm of Hopeite (Zn3(PO4)2. The log Pb2+ - pH activity isotherms indicated that at pH ····· 10361118146
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Superconducting materials, made up of metals, alloys and compounds are more important due to the characteristics of zero electrical resistance and magnetic levitation. In the present study, Bi (2223) system doped with various metal ions such as antimony, thallium and gallium and their structural, electrical and magnetic properties were investigated. These dopants were found to be useful in enhancing the zero resistivity temperature Tc(0). This study is useful for the researchers in advanced conducting materials, metallic compounds, and oxides. It is also the source of reference for the material scientists, especially those who are working on high-Tc superconducting materials. ····· 10361118104
für 50.31€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El emergente campo de la Nanotecnología está imponiendo la fabricación y el estudio de materiales estructurados a escala nanométrica como una de las claves de la investigación científica actual. Especialmente, tienen relevancia las nanopartículas metálicas consideradas como componentes básicos para la elaboración de dispositivos funcionales nanométricos. En este libro se presenta un estudio sobre la síntesis de nanopartículas de oro y su estabilización por monocapas moleculares de 6-mercaptopurina. Asimismo, se proponen diversas alternativas para ensamblar dichas nanopartículas sobre sustratos planos, explorando la posibilidad de obtener estructuras ordenadas. El presente trabajo puede ser de utilidad para aquellos investigadores del área de la Química interesados en la fabricación y el estudio de nanomateriales. ····· 10361116853
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La información que se obtiene de la investigación básica suele ser aplicada en algún momento, pero no es éste el objetivo primordial del investigador. De hecho, la mayor parte de nuestra tecnología moderna se basa en resultados que se obtuvieron de la investigación básica. Por lo general, los productos nuevos y los avances tecnológicos importantes en un campo determinado llegan precedidos de una extensa investigación básica. ····· 10361116717
für 64.71€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray New discoveries in physical chemistry and physics among with development of IT technologies require new forms and methods of these disciplines teaching. Present monograph provides such new methods of quantum chemistry teaching in contemporary informational space regarding the content and the forms of knowledge presentation. It contains theoretical description with examples of practical problems with solutions in physical chemistry and is based on the author`s graph methodology of teaching proven in pedagogical experiments with over 400 students. The monograph shows how the recent researches in spectroscopy may be applied to the learning process in physical chemistry. ····· 10361116189
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Mining and industrial processing are among the main sources of heavy metals contamination in the environment. Heavy metals may accumulate to toxic level which can cause a potential risk to human health. Air, soil and water pollution monitoring and assessment of mining areas are therefore imperative for sustainable environment. This book which is based on a research study conducted in Ghana gives an insight on how the levels of ten heavy metals in air, soils and water samples can be monitored in a mining area. This book explores how pollution can be quantified using indices. It also explains how multivariate statistical analysis can be integrated into the identification of pollution sources. It will provide a valuable tool in developing assessment strategies for effective air, soil and water monitoring studies in vicinities exposed to gold mining and other industrial activities. ····· 10361115981
für 49.41€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Environmental pollution is becoming more and more serious. A lot of dangerous contaminants can reach from sewage to surface water, rivers, lakes, and in the end to drinking water. Heterogeneous photocatalysis is promising method how to remove these persistent organic pollutants. Titanium dioxide is suitable photocatalyst due to its excellent properties. This book describes preparation of thin titania layers by two techniques: material printing and chemical vapour deposition. Two methods of sol preparation were applied sol-gel and hydrothermal synthesis. Photocatalystic activity was evaluated as a degradation rate of model compounds as well as investigation of photoinduced superhydrophilicity. This work shows that material printing is innovative technique usable for preparation of photocatalytic active layers. ····· 10361115798
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The motivation of this book is to develop the merits of infrared spectroscopic based methods that could be used as a detector/identifier in biological detection systems. The methods described in this book are based on Attenuated Total Reflection (ATR) because of the requirement of detection of spores in water. The use of ATR requires concentrating the spores onto the surface of internal reflection elements (IRE). In chapter 3, an electrostatic method for concentrating Bacillus globigii spores on the ZnSe IRE with alumina coating is presented. In chapter 4, an electric field assisted ATR was developed and no coating of the IRE was required. Application of the electric field without flow leads to a rapid adsorption of the spores on the IRE. The spores could be easily and rapidly removed by flowing in a new sample.The work in chapter 5 explores the packing arrangement of kaolin particles on a ZnSe IRE under an applied electric field.Polarized IR spectroscopic measurement and AFM show that kaolin deposition rearranges a flatter orientation on the surface under E-field and no flow. ····· 10361115661
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Understanding the fundamental properties of metal nanoclusters is a major challenge for researchers and has been a subject of many investigations. Theoretical modeling is an indispensable tool for elucidating the characteristics at nanoscale. In this fascinating text, the authors provide some interesting findings of their Density Functional Theory (DFT) based investigations on small palladium clusters along with a brief review of the experimental and theoretical aspects of the field - an important and relevant area in catalytic science. Small gas phase palladium clusters exhibit highly non-monotonic size and charge dependent structural and electronic properties and the four atom palladium cluster is the most stable cluster among the series of clusters studied. Neutral and cationic Pd4 clusters show higher catalytic activity towards CO oxidation than that of anionic Pd4 cluster. The `reverse hydrogen spillover` phenomenon is observed from the support to the metal in zeolite supported palladium systems. This book will be helpful for researchers in designing suitable catalyst based on palladium tuning their size and charge states. ····· 10361115281
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Conducting polymers are still at a research level. Commercial applications are not expected before several years.Here, we use electropolymerization using cyclic voltammetry technique to prepare some conducting polymers. By studding the kinetics of electropolymerization process we obtained the optimum conditions for preparation. The obtained polymers had characterized using several tools. Finally, we use the obtained polymers as a corrosion inhibitors to mils steel in HCl solutions at different temperatures with good corrosion inhibitor efficiency. ····· 10361115174
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The work described in this thesis, potasium-2-amino acetate benzothiazole chelate complexes were prepared. Infrared, ultraviolet visible, spectrophotometric techniques, magnetic susceptibility, atomic absorption conductivity measurement and other physical properties were used to characterize the free ligand and the above chelate complexes. All these compounds were act as stabilizer in PVC films. The rate of photodegradation and photostabilization of PVC film were monitored by measuring the carbonyl, polyene and hydroxyl indices (Ico, Ipo and IoH) values as afunction with irradiation time and ultraviolet visible spectrophotometry using the concentrations of additive 0.5% wt/wt. It is found that the carbonyl index, polyene index and hydroxyl index values increased with irradiation time, and this increase depend on the type of additives (free ligand and complexes). According to the experimental results obtained several mechanisms were suggested depending on the structure of the additives. Therefore HCl scavenging, UV absorption, peroxide decomposer and radical scavenger for photostabilizer additives were suggested. ····· 10361115169
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Nature sustains the environment of earth in such a way that every entity in it behaves in a systemic way such that existence of life on this planet is ensured. However, the anthropogenic activities are disconcerting this natural balance of the atmosphere. One of the consequences is the depletion and formation of ozone in stratosphere and in troposphere respectively. The outcomes associated with the existence of ozone in different regions of the atmosphere should be known to a common person. An attempt has been made to present this important issue in a short and simple way to create awareness about the effects of ozone among the readers. Some diagrammatic presentations of concerned chemical reactions have been projected to develop the clear understanding of the chemistry underlying in these reactions. ····· 10361115000
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Making our lives more and more comfortable we pollute the environment where we live. Often toxic trace metal ions are released and spread into the surrounding, where they will be taken up into the biological chain ending very often inside us causing different diseases. When a human has been exposed to some kind of harm, it is critical to find quickly the substance causing the poisoning. It is critical to identify this polluting substance or compound and also to measure its concentration to find the best way for cure. One of the most inexpensive ways to perform chemical analyses of a large variety of heavy metal ions is to use electrochemical methods. Unfortunately voltammetric analytical methods require often sample pre-treatment. To overcome this kind of problem the ultrasound has been taken into arsenal of electrochemistry. The applied ultrasound provides continuous cleaning removing adsorbing organic compounds off the sensing electrode surface during the analysis of the analytes providing a fast sample pre-treatment free electroanalysis. This book is dedicated to the sonoelectroanalysis of cadmium, lead and zinc ions from a human blood. ····· 10361114885
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In modern analytical laboratory, it is essential to reduce the chemicals used,and the analysis time. Chemometrics addresses these constraints that happen due to reducing the solvents used and the duration of analysis by doing most of the works on the front desk using micro computers with appropriate softwares on the primary data generated in the lab work. After some recent years, chemometrics has become one of the mathematical and statistical techniques for the resolution of overlapping spectra of multi component mixtures, which is difficult to separate using the traditional spectroscopic method as well as it has a wide application in different disciplines. This book tries to elucidate how chemometric techniques are applied by analyzing the full absorption spectra of Anti-TB drugs recorded during the Lab work. Analysis of the data on personal computer helps to change the data to tangible information by making tables, charts and graphs. To summarize this work, it shades some light on the application of chemometrics for those who wish to be analytical and pharmaceutical analysts, and interested to make a research on multicomponent mixtures of synthetic or natural origin. ····· 10361114717
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Biosorption is a property of certain types of inactive, dead, microbial biomass to bind and concentrate metal ions from aqueous solutions. In the present study, the metal ions Cu(II), Cd(II), Pb(II) and Ni(II) removal potential of acacia leucocephala bark powder, fungus (T. versicolor) biomass and chitosan-abrus precatorius blended beads is investigated by kinetic, equilibrium and thermodynamic studies. The basic objective of the study is to contribute to the understanding and modeling of the equilibrium adsorption process. For this purpose, the effect of various factors affecting adsorption such as pH, contact time, biomass dosage, initial metal ion concentration and temperature is investigated. The experimental data are fitted to Lagergren-first-order and second-order, intraparticle diffusion kinetic models, and Langmuir and Freundlich isotherm models. The thermodynamic parameters, such as change in Gibbs free energy ( Go), entropy ( So), and enthalpy ( Ho) are calculated. ····· 10361114514
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Milk proteins consist of casein micelles and whey proteins. Heat treatments cause denaturation of whey proteins. The denatured whey proteins may either form whey protein aggregates or may provoke whey protein coating of the casein micelles. This research focused on the effect of heat on the properties of milk proteins and their heat-induced interactions. This effect was studied in different concentrations of whey proteins and different types and concentrations of lecithins, by using three techniques Photon Correlation Spectroscopy (PCS), Centrifugal Photosedimentometry or Centrifugal Particle Size Analyser and Differential Scanning Calorimetry (DSC). From the overall results obtained, it was concluded that the heat-induced interaction between casein micelles and whey proteins could be reduced by addition of hydrophilic lecithins, which could be due to the fact that the latter stabilises the unfolded state of the denatured whey proteins and hence minimises its aggregation and interaction with other proteins. ····· 10361114510
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book explain the basic concepts in Chemical kinetics like the Rate of the reaction, Rate Law, Law of Mass action, The equilibrium state, Order and molecularity of the reaction, Rate constant, Temperature dependence, Pressure dependence, Rate equation, , Zero order reactions, First order reactions, Second order reactions, Pseudo first order reactions, Nth order reactions, Arrhenius equation, factors affecting the rate of the reactions and also explain the Unimolecular and Bimolecular theories in chemical kinetics.. This book also contains the solving chemical Kinetics problem. ····· 10361113718
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Ferrite nanoparticles have attracted a lot of promise in different field (Targeted drug delivery, NMR, hyperthermia and etc).In this book, we dealt with synthetic tehnique (Chemical precipitation and Microemulsion) for the synthesis of multicomponent ferrite nanoparticles. We carried out structural and magnetic study of multicomponent ferrite at different temperature. We also studied the effect of Zn doping in different ratio on structural and magnetic properties.We also studied magnetic behavior at different temperature. This book also dealt with synthesis of long nanofibre polyaniline and its composite with multicomponent ferrite. we discussed the effect of polyaniline nanofibre on magnetic properties of ferrite and mechanism of formation of polyaniline nanofibre and polyaniline composite with schematic diagram. So this book will be very helpful for those who are doing work in the field of nanoparticle and its composite ····· 10361113296· 1 ·· 2 ·· 3 ·· 4 ·· 5 ·· 6 ·· 7 ·· 8 ·· 9 ·
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