für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work concerned with preparation of Carbon Nitride thin films which is theoretically compete Diamond in hardness. CNx films perpared by the electrolysis of methanol -urea organic solution under different concentrations and applied voltages. This study characterized the structure of the prepared films by FTIR and GIXRD techniques and studied the optical properties of the CNx films by UV-Vis spectrometer. this study aimed at how the nitrogen to carbon ratio in the deposited films affect the structure and the properties of the deposited films. ····· 103613735
····· lezzter Preis 61.20€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book attempts to quantify the complex interactions between HVDC transmission schemes in a multi-infeed configuration, particularly with regard to the voltage interactions and the commutation failure phenomena. MIIF, MIESCR, and CFII are indices that can provide engineers with the necessary tools for system studies. The Multi-Infeed Interaction Factor (MIIF) quantifies the level of voltage interactions. The Multi-Infeed Effective Short Circuit Ratio (MIESCR) index is an indicator of ac system strengths with regard to the assessment of the transient overvoltage and the PV stability of multi-infeed HVDC systems. The Commutation Failure Immunity Index (CFII) utilizes electromagnetic transient simulation programs to evaluate the immunity of an HVDC converter to commutation failures. The capability of these indices to provide an insight into the interactions phenomena in multi-infeed systems are clearly demonstrated by examples that show their application in the analysis of an actual multi-infeed HVDC system that is in the planning phase in the province of Alberta in Canada. ····· 103613591
für 35.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El descubrimiento de la radiación X a finales del siglo XIX por el físico alemán Wilhelm Röntgen marcó un hito histórico que supuso el comienzo de una nueva vertiente en la Física: la aplicación de radiaciones ionizantes para el tratamiento de tumores malignos. En esta publicación se exponen tres trabajos de investigación cuyo objetivo principal es analizar el papel de la Física en la Medicina y la Biología, tanto en la medida de eventos bioeléctricos como en un ámbito más hospitalario, y más concretamente, en la Radioterapia. ····· 103612527
für 26.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray En este libro se analiza un sistema de cadenas oscilatorias no lineales acopladas, enfocándose principalmente en el estudio de la estabilidad clásica del sistema y la cuantización macroscópica de solitones en esta estructura. El tratamiento clásico se realiza mediante métodos variacionales que permiten determinar las ecuaciones dinámicas y analizar su estabilidad en este régimen. Las soluciones estables a nivel clásico son posteriormente estudiadas en el límite semiclásico WKB, bajo consideraciones propias de la mecánica cuántica en sistemas no lineales, permitiendo la investigación de fenómenos estrictamente cuánticos como la posibilidad de tunelamiento cuántico entre las cadenas. ····· 103612398
für 88.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Es una obra literaria que contiene el desarrollo completo de los programas de educación pública del nivel superior para las carreras de Ingeniería Mecatrónica y afines (Ingenierías: Electromecánica, Mecánica, Química, Industrias Alimentarias, etc.) Incluye una gran variedad de Problemas de Termodinámica y Transferencia de Calor en el Volumen 1 Tomos 1 y 2, y de Mecánica de Fluidos en el Volumen 2, resueltos con procedimientos completos, sin saltearse pasos, en escenarios didácticos que favorecen el aprendizaje autodidacta. Consta de 7 capítulos: 5 en el Volumen 1, y 2 en el Volumen 2. El Vol. 1 Tomo 1, consta de 4 capítulos de Fundamentos de Termodinámica: 1ª y 2ª Leyes de la Termodinámica para procesos reversibles e irreversibles y ciclos termodinámicos (de Otto, diesel, rankine, refrigeración). Este Vol. 1 Tomo 2, contiene 1 extenso capítulo de Mecanismos de Transferencia de Calor y Tablas con Propiedades Termofísicas. El Vol. 2, contiene 1 capítulo de Mecánica de Fluidos: Análisis de fluidos compresibles e incompresibles para flujos laminar y turbulento en tuberías y conductos, modelación y simulación de redes de tuberías y golpe de ariete y 1 capítulo de Análisis Dimensional. ····· 103611728
für 88.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray La Física explica la naturaleza con el lenguaje de las Matemáticas. Esto hace que en muchos casos se confundan ambas ciencias y para algunos alumnos la Física sea un conjunto de fórmulas que poco o nada tienen que ver con el mundo que les rodea. El objetivo de este trabajo es mejorar el aprendizaje de la Física, con la ayuda de las TIC. Entre estas, destaca Internet como un factor de cambio en la forma de enseñar y en la forma de aprender. Los objetos de aprendizaje tecnológicos nacen con la vocación de facilitar su uso y reuso y de ser interoperables. Para ello deben estar etiquetados con metadatos y empaquetados en módulos, para así distribuirlos íntegramente en la Red. En este trabajo se han diseñado y construido seis objetos de aprendizaje, para la enseñanza de Física I en la Escuela de Ingenieros Industriales de la Universidad de Cantabria. Los contenidos didácticos en todos los casos consisten en una o varias películas Flash, que reproducen el problema a estudiar, con las que se puede interactuar, y una serie de preguntas de menor a mayor dificultad que pone al alumno en el camino de la comprensión y el aprendizaje significativo. ····· 103611433
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The aim of this thesis was to investigate the reliability of anodic vacuum arc plasma deposition technique in developing thin film thermocouples. This thesis presents a detailed description of the preparation and characterization of nanocrystalline thin films of Cu, Ni, Fe, Constantan, Chromel and Alumel, and their subsequent pairs as thin film thermocouples. ····· 103611193
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray It is very important to understand the mechanical properties of polymers at the nanoscale with the continuing demand of decreasing the size of circuit in the electronic industry. There has been considerable research on the confinement effect in thin films with a variety of techniques, often with conflicting results. We developed the stress-strain analysis and energy balance approach to separate the surface tension contribution to the observed rubbery stiffening. Further, the geometry effect in the nanobubble inflation technique was investigated by comparing the creep behavior of circular bubbles with that of rectangular bubbles. Next, we investigated the molecular architecture effect in the nanobubble inflation technique by comparing the creep behavior of linear PS with that of the three-arm star PS. In the last part of this thesis, the capability of the nanobubble inflation technique to investigate the yield and fracture behavior of ultrathin films was demonstrated. ····· 103611087
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Hydrogen is a possible candidate for replacing oil in the long-term in many applications such as transportation.Storage of hydrogen at near ambient temperatures and pressures is a puzzling issue for the scientific community.Hydride storage is one of the most promising, safe solutions for sustainable use. The magnesium and its alloys have attracted a lot of attention since the gravimetric hydrogen capacity is relatively important (7.6 wt. %) and the systems are reversible. The Mg-based hydrides compounds have high enthalpy of formation making them too stable for practical applications. Additionally they have some kinetics limitations that can be partially overcome by catalysts or nanostructuring of the alloys. Apart from these, another approach to lower the reaction enthalpy of MgH2 is composite preparation with the hydrogen storage materials. The present book is an outcome of the research on the destabilization of MgH2 by composite formation with hydrogen absorbing ZrCr2 alloy. ····· 10361828
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The non-corrodible nature of FRP bars along with their high strength, light weight and ease of installation made it attractive as reinforcement especially for structures exposed to aggressive environment. In addition, the transparency of FRP bars to magnetic and electrical fields makes them an ideal alternative to traditional steel reinforcement in applications sensitive to electromagnetic fields such as magnetic resonance imaging (MRI) units. Continuous concrete beams are commonly-used elements in structures such as parking garages and overpasses, which might be exposed to extreme weather conditions and the application of de-icing salts. In such structures, using the non-corrodible FRP bars is a viable alternative to avoid steel-corrosion problems. However, the linear-elastic behaviour of FRP materials makes the ability of continuous beams to redistribute loads and moments questionable. The objective of this research project is to investigate the flexural behaviour of continuous concrete beams reinforced with FRP and their capability of moment redistribution. ····· 10361815
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The interaction of semiconductor surfaces with deposited metals is very important for understanding many aspects of the behavior of microelectronic devices. The early stages of metal-semiconductor interface formation are amenable to analysis with surface sensitive techniques. The most important characteristic of metal semiconductor interface is nature of the potential barrier between the Fermi level in the metal and the majority carrier band edge of semiconductor of that interface. The study of metal / semiconductor (Si) reactions are of great importance present in every semiconductor device.The present book is an outcome of investigations of structural, morphological, magnetic and electrical behaviour of metal (Co, Cr, Ni) / semiconductor (Si) system. ····· 10361478
····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Although it is not practical to design buildings to withstand explosive loads, it is possible to improve the performance of structures in resisting blast induced progressive collapse. By determining the critical standoff distance and hardening key elements (columns), Designers can enhance the life safety of the persons within the building and facilitate rescue efforts during such an event. In this Book it is tried to investigate the dynamic response and damage of RC framed structure under external blast loading using recommended procedures and code provisions. Blast analysis was performed based on sequences of nonlinear analysis using SAP2000 and SDOF approximation technique at different standoff distances. ····· 10361174· 1 · ::::: · 3 ·· 4 ·· 5 ·· 6 ·· 7 ·· 8 ·· 9 · ::::: · 10 ·
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