für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this book, deep investigations have been conducted for the effects of various environmental actions namely, chloride, temperature, oxygen, carbonation and moisture on the corrosion of reinforcing steel in concrete through extensive experimentation and modeling for the environment variables that have been overlooked in the past research. A semi-experimental-theoretical approach was adopted. The enhanced corrosion model being in close agreement with the experiment results predicts the corrosion rate and potential of steel in concrete for mass and energy transport through porous media with good accuracy and precision. Influential parameters on prediction of corrosion in RC structures involving the severe environmental loadings are experimentally determined and numerically discussed through parametric study. Appropriate parameters for material modeling of corrosion on the basis of present computational scheme are successfully identified by experimentation. ····· 10361102671
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The controlled drug release has been proven to enhance the bioavailability of a drug by maintaining the drug concentration in therapeutic level within certain period of time and lowering the risk of drugs side effects by reducing the frequency of drug administration. Among the available drug administration systems, microcapsule has provided advantages over the conventional mode, due to higher efficiency and flexibility. This microcapsule can be produced by supercritical fluids (SCF) method which currently been used in composite particles production. This application solves the limitations of conventional pharmaceutical methods for the production of active ingredient loaded micro particles. Supercritical anti-solvent (SAS) is one of the SCF methods proven to have good potential in micronization of pure component. In this technique, SCF acts as an anti-solvent for the feed solution and the precipitation occurs when these two media (SCF and feed solution) contact each other. ····· 10361102632
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Web browsing posses a major share among the activities on the Internet. Heavy usage of web browsing makes the Web Quality of Experience (QoE) one of the critical factor in deciding the overall success of network services. Amongst others, Web QoE can be effected by the delays in network that can result in higher application download times. An effort has been made to map applications level download times to Quality of Experience. A subjective analysis on how the user takes into account the domain of web browsing has been carried out. For this purpose a testbed was developed at Blekinge Institute of Technology on which different users were tested. Specific sequences of delays were introduced on the network which resulted in desired application download times. Regression analysis was performed and a mapping between user QoE and application download times was carried out. Based on the results conclusions were made which are presented here. ····· 10361102624
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray As the summary, carrier relaxation dynamics in non-doped BSO and Cr doped BSO is studied using the PIA change by nanosecond pulse excitation using a frequency doubled Nd:YAG laser. The time-resolved PIA decay in non-doped BSO relaxes in a few hundred milli second whereas for the Cr doped BSO, this happens in time of the order of hundred seconds. The Cr defects in BSO increase the density of the shallow and deep trap levels that increase relatively the life time of the charge carriers compared to non-doped BSO. The microoptical mechanism for the PIA decay is related to the carrier tunneling between localized state of each Cr ions than carrier trapping. From the optical absorption spectra measurements, the Cr doped BSO has shifted the intrinsic edge to the longer wavelength and gave rise to new absorption bands in the visible and NIR ranges. ····· 10361102606
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book deals with an emerging nanofibre-making technology, electrospinning, the functionalities of electrospun nanofibres and their wound healing application. An important fundamental issue, fibre morphological evolution during electrospinning, is clarified. Effective techniques to improve the fibre toughness and control the surface wettability of nanofibre membrane have been developed. These functional nanofibre membranes have been used as dressing materials for healing skin wounds, and shown promising results. This work makes electrospun nanofibre membrane an ideal candidate for wound healing application. ····· 10361102565
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The feasibility of underwater wireless video transmission using an acoustic multicarrier system for applications such as deep-sea supervisory control and inspection is discussed and proved. Such a system is of interest over short distance links, with short delays and high available bandwidth, as near real time imagery can be transmitted to monitor targeted underwater spots. This work includes three parts: (1) underwater channel study to determine necessary power levels and frequency allocation, (2) video compression to reduce the amount of data to be transmitted through the channel, and (3) OFDM modulation to achieve high bit rates over the underwater link. Experimental testing was conducted at the MIT Sailing Pavilion premises, in the Charles River, Boston. The results demonstrate the usefulness of the coupled MPEG-4 compression and OFDM modulation, reaching bit rates on the order of 90 kbps in a 115 kHz acoustic band over a 200-meter link under a variety of channel conditions. ····· 10361102547
····· lezzter Preis 44.10€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray While conventional test point insertions commonly used in design for testability can improve fault coverage, the test points selected may not necessarily be the best candidates to aid silicon diagnosis. This book targets test point insertions to detect more faults as well as to distinguish currently indistinguishable fault-pairs. This is achieved by identifying those points in the circuit, which are not only hard-to-test but also lie on distinguishable frontiers, as Testability-Diagnosability (TD) points. To this end, a novel low-cost metric to identify such TD points is proposed. Further, a new DFT + DFD architecture is developed, which adds just one pin (to identify test/functional mode) and small additional combinational logic to the circuit under test. In the other part, improving diagnosis in BIST environment is targeted. To facilitate diagnosis, researchers have proposed the use of two additional on-chip embedded memories, response memory to store reference responses and fail memory to store failing responses. In this book, a novel architecture is proposed which requires only one additional memory and responses of only a small subset of available test patterns are stored. ····· 10361102455
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In recent years, nanoprobe-based devices have attracted significant attention and found a wide range of applications, including nanostructure imaging, single molecular detection, and physical, chemical, and biological sensing applications. However, since the scale of nanodevices is substantially less than the optical diffraction limit, their fabrication remains a difficult challenge. Despite significant efforts, most of the fabrication techniques developed so far require expensive equipment and complicated processing procedures, which has hindered their applications. We developed a new class of fluorescent nanoprobes consist of a silica fiber taper, a single carbon nanotube, and nanoscale fluorescent elements. This nanoprobe provides a natural interface between the nanoscale structures and the microscale structure, which can significantly simplify their fabrication. Furthermore, the nanoscale fluorescent elements are produced through bottom-up processes, which can easily tailor the functionalities of such fluorescent nanoprobes to many different applications in nanophotonics, including near field imaging, nonlinear optics mapping, and quantum electrodynamics. ····· 10361102418
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Gluten is a protein found in all forms of wheat, rye, oats, barley and related grain hybrids. People with celiac disease when consume gluten, the absorptive villi in the small intestine are damaged and thus preventing the absorption of many important nutrients. The long-term effect of untreated celiac disease can be life threatening. Present investigation aims at development of cookies from gluten free composite flour. The effect of broken rice flour on cookies quality was studied. The compositional variations resulted in the 13 minutes baking as optimum time in a condition of 170 ± 1 degree centigrade as upper burner and 185 ± 1 degree centigrade as lower burner temperature. The textural and colour characteristics of optimized cookies resulted in the sensory acceptability as extremely acceptable . The composite flour free from gluten may give a viable alternative to introduce a variety in cookies so as to increase the food choice range for the person suffering from celiac disease. ····· 10361102406
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The purpose of the present study is to experimentally investigate rapid moulding solutions for plastic components using silicon moluding process. Starting from the identification of component, prototypes with two different types of plastic materials were produced under different vacuum moulding conditions. Measurements on the coordinate measuring machine helped in calculating the dimensional tolerances of the plastic components produced. Some important mechanical properties were also compared to verify the suitability of the components. The study highlighted the process capability of silicon moulding process in terms dimensional accuracy for plastic components. Final components produced are acceptable as per IS standard (UNI EN 20286-I (1995) also according DIN 16901 standards for plastics. This process ensures rapid production of pre-series technological prototypes and proof of concept at less production cost and time. ····· 10361102394
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Plastic containers are extensively used for transportation and storage of a vast variety of fluids due to their low production cost and easy manufacturing. Nevertheless, they are prone to sudden failure when subjected to impact loading, such as drop impact. There is a basic lack of understanding of the fundamental mechanisms leading to such failure as well as the effects of parameters, such as pressure, strain rate, container design, material properties, etc.. The main aim of this study is to investigate the behaviour of water-filled blow-moulded polyethylene containers sunbjected to drop impact, and the mechanisms leading to their failure in order to be able to predict when such failure will occur. To this end, a combined experimental-numerical investigation is applied. Standard and instrumented drop impact tests are carried out, in parallel with extensive numerical simulations performed using finite-volume based fluid-structure-fracture interaction procedures. This study can be very useful in design of plastic containers as well as to all researchers dealing with various fluid-structure-fracture interaction problems. ····· 10361102353
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book analyses the social, cultural, technical and economic issues behind the dissimilar growth of information and communications services in countries across the world. There are dissimilarities in terms of service penetration and usage volume between countries with similar socio-economic structures. Penetration and the use of services like voice, messaging and the Internet depend on several factors. This book demonstrates that the socio-cultural aspects of language diversity, technological issues in the service delivery and economic aspects of the charging policy all have major roles to play in the penetration and usage of information and communications services. This book will enable readers from the social sciences and engineering disciplines to appreciate the fundamentals needed in inter-disciplinary and cross-country research on the adoption and growth of communications services. Researchers and managers in business organizations will find the mathematical analysis and tools presented in this book useful for estimating the demand and revenue from next generation networks and services. ····· 10361102311
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Nowadays the importance of environmental logistics is increasing while organizations are trying to pay more attention to their transport activities. Since PNL is a famous logistics company in Nordic countries and transport activates are done by sub contractors they intend to make sound environmental choices by assessing their suppliers from environmental performance in order to identify the best suppliers which is comply with the PNL environmental policy. ····· 10361102307
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In this research, eggshell (CaCO3) as a natural composite bioceramics is used to make a new improvement in materials world. The main purpose use eggshell as a new thing because the major component of eggshells is calcium carbonate (CaCO3). Chicken eggshell (ES) containing 95% Calcium Carbonate and has a potential as the important bio-filler. Investigation of mechanical properties and behavioral of Calcium Carbonate composite compared with virgin matrix, Polyethylene (PE) will carry out as a new research. There are three types of test such as tensile, flexural, and creep which is purposed to search the behavioral and the best mechanical properties among the fraction values of filler. The Modulus Elastic (E) has been improved with the ES content, and during creep test, this biofiller was found to be better than virgin PE. Although ES composites showed lower E values than virgin PE hence, the lower content of ES composites still can improve their properties for some applications. Scanning Electron Microscope showed an improved inter-facial bonding on the tensile fractured surface. ····· 10361102293
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This study analyzes urban freight distribution from the wholesale distribution sector to supermarkets` retail sector via TransCAD software, and the vehicle routing problem with time windows has been applied for possible delivery route optimization. TransCAD focuses on a transport system based on graph theory concepts which have been employed in this study, together with some basic concepts of distribution chain and its elements. Some parameters for the application of TransCAD have been based on information provided by a wholesale distribution company located in Uberlândia, Brazil. Such information includes vehicle type, fleet size, and average client demand. The features of the vehicle type underwent changes in four different scenarios outputs were generated for each of these scenarios, which revealed the most effective itinerary and route settings for urban freight distribution. Even though TransCAD fails to analyze factors such as traffic conditions, vehicle freight arrangement, and average vehicle speed along a given route, the results of this study may contribute to the operation of product distribution. ····· 10361102258
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In view of the rapid changes that are taking place in Indian economy due to the policy of liberalization and the fierce global competition, the Indian manufacturers have to adopt themselves to the changing scenario. Indian handicrafts and products from its rural industries have a large global market and can change the balance of payment positions of India. Also small and medium scale industries including ancillaries who are traditionally suppliers of simple and rough machined components are now being encouraged to involve themselves in highly sophisticated products. The main objective is to identify, develop and exploit new technologies that can bolster productivity, quality and commercial viability without costing the environment, i.e. to develop environment friendly engineering processes on the principle of agile manufacturing for which the best candidates are rural and medium scale industries of India. ····· 10361102222
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Catastrophic bearing failure is a major concern for the railroad industry because it can lead to costly train stoppages. Excessive heat buildup within the bearing is one of the main factors that can warn of impending failure. The work presented in this book is motivated by the need to understand the heat transfer paths to the bearing when wheel heating occurs. A series of experiments and finite element analyses were conducted in order to quantify the different heat transfer mechanisms, with an emphasis on radiation. ····· 10361102213
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This thesis is an introduction to ductile failure in sheet metals. First an overview of the main models existing in the literature is given, then examples of applications are provided to illustrate how a damage model can be actually applied to industrial processes. A procedure to identify the parameters of a constitutive and damage model starting from tensile tests and full-field measurements is detailed. The damage model, implemented in a FE code, is used to predict failure in sheet and tube hydroforming processes. The possibility of using numerical tools to predict plastic instabilities such as bursting or wrinkling is also discussed. Finally, in order to show a different way of tackling the problem of ductile fracture, a theoretical and experimental study is conducted about piercing of sheet metals with pyramidal weapons. ····· 10361102143
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book appeals to an audience in the engineering field specifically Mechanical Engineering. Professional design engineers will find this work useful in the estimation of the magnitudes of residual stresses in components and correctly account for them when determining factors of safety. Destructive and non-destructive technicians will find it helpful in the condition monitoring of plant and equipment while a basis for researchers is laid to pursue further work.The book focuses on the measurements of displacements, time of flight/ultrasonic velocity and strains in steel specimens which subsequently prompts the calculation of stresses. The following methods are covered Hole Drilling, Ultrasonic (Debro-30) System and Digital Shearography. Emphasis is laid on the experimental procedures and the analysis of the results thereof. A novel technique of quantifying residual stresses using shearograms obtained from Digital Shearography experimental data is proposed. This however warrants further investigations that require independent verification stress measurement methods. ····· 10361102124
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The dilemma of Pakistan`s textile industry is its inability to introduce its own brand names. Our industry majorly is buyer dictated in which products are made according to the requirements of customer. Our project is `discussing the product development techniques with reference to a Rotary printing machine`. The correct concept of product development involves selecting the products first and then going for a setup but unfortunately in our case, machinery is selected first and then we run for orders. Furthermore, we have not introduced our own brand names. We usually confuse the concept of product development with buyer dictation. Product development is only applicable where you are launching your own products/brands and we haven`t done that. In our project, we are discussing product development techniques specific to printing. ····· 10361102099
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This is a Graduation Project by Mustafa Resit Haboglu and his colleagues Kerem Emrah Erkut and Suat Ensari who all graduated from Sabanci University (Istanbul/Turkey) in the Spring of 2009. The project suggests an improved design for a previously designed pool cleaning robot. The mechanical design contains the dimensions of the structure, properties of its inner components such as vacuum pumps, motor etc. and the optimisation of the assembly of those components. Electrical design contains the controlling of the robot and remote controller. ····· 10361102092
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book covers analysis, fabrication and characterization of piezoelectrically actuated valveless micropumps and process development and fabrication of hollow microneedles for transdermal drug delivery applications. Because of the complexity in analysis of piezoelectric micropump, which involves structural and fluid field couplings in a complicated geometrical arrangement, finite element (FE) numerical simulation rather than an analytical system has been used. The set of multifield simulations in the analysis have provided a valuable benchmark and prediction data as it allows transient, three dimensional, sequential piezoelectric and fluid analysis of the micropump, thereby facilitating a more realistic multifield analysis. Micropump fabrication and performance characterization has also been presented. Finally a process for fabricating hollow silicon out of plane microneedle arrays has been developed. Using a combination of isotropic etching and Bosch process, the high aspect ratio and high density microneedle arrays have been fabricated successfully. Structural and Microfluidic analysis of polymeric microneedles has also been discussed in the book. ····· 10361102060
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Over the last decade, the research on III-Nitrides semiconductor materials has increased exponentially, and engineering the III-Nitrides semiconductor materials for energy efficient laser and solid-state lighting are among the most exciting activities in nitride-based research and development area. Conventional methods of producing nitride-based laser are complicated and lack of viable approach for large scale production. Regarding existing technologies for solid-state white light sources, especially, white and color-tunable LEDs, they are suffered from severe patent issues. This book, therefore, provides new methods of engineering nitride-based materials for novel microdisk lasers and solid-state white and color-tunable light sources, with a simple, fast and mass production process. Three separate, distinctly different approaches of fabricating novel nitride-based devices are outlined. This study should help shed some light on these new and exciting nitride-based semiconductor materials, and should be especially useful to professionals in solid-state lighting fields, or anyone else who may be considering as newcomers in the GaN field. ····· 10361102059
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work aims at investigating the causes of chipping on the engobe/glaze interface found on ceramic floor coating. This defect is found at the end of the production line and, in some cases, at the consumer`s final part of a Braziliam Ceramic Company. To achieve the research`s goal, the performance of the different structural layers of ceramic floor coating (substrate, engobe and glaze) were studied individually as a more precise appoach to accurate conclusions. ····· 10361102058· 1 · ::::: · 36 ·· 37 ·· 38 ·· 39 ·· 40 ·· 41 ·· 42 · ::::: · 83 ·
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