الصفحة 49
الصفحة 49
Antibacterial effects of Algae
An alarm increase in the rate of emerging of resistance bacteria have been causing a great public concern worldwide. This problem of increasing resistance has necessitated the search for safe and effective factors that may be used to treat persistent bacterial infections or modify the currently available antibiotic. This study deals with the antimicrobial potential assessment of ulva flexuosa , ulva flexuosa was collected from at MAZAR ELKHODER. Crude organic extracts were prepared using methanolic and chloroformic extract and tested against 6 indicator microorganisms using the disk diffusion method and also applied against biofilm ( dental plaque).
Animal cell technology : Basic & applied aspects ; Proceedings of the 7th Annual Meeting of the Japanese Association for animal cell technology (JAACT), Nagoya, Japan, November 15-18, 2004
This book contains the proceedings of the 17th Annual and International Meeting of the Japanese Association for Animal Cell Technology (JAACT) that was held in Nagoya, Japan from November 15 to 18, 2004. This volume gives the readers a complete review of present state-of-the-art in Japan and other countries where this field is well advanced. The Proceedings will be useful for the cell biologists, biochemists, molecular biologists, immunologists, biochemical engineers and other disciplines related to animal cell culture, working in either academic environments or in industries of biotechnology and pharmacy.
Analytics of Protein-DNA Interactions
This book covers trends in modern biotechnology. All aspects of this interdisciplinary technology, where knowledge, methods and expertise are required from chemistry, biochemistry, microbiology, genetics, chemical engineering and computer science, are treated. More information as well as the electronic version is available at springer.com.
Analysis, Modeling and Simulation of Multiscale Problems
This book reports recent mathematical developments in the Programme "Analysis, Modeling and Simulation of Multiscale Problems", which started as a German research initiative in 2006. Multiscale problems occur in many fields of science, such as microstructures in materials, sharp-interface models, many-particle systems and motions on different spatial and temporal scales in quantum mechanics or in molecular dynamics. The book presents current mathematical foundations of modeling, and proposes efficient numerical treatment.
Analysis of seawater : A guide for the analytical and environmental chemist
It is only in the past few years that methods of adequate sensitivity have become available for true ultra-trace metal determinations in water. In the case of organics in seawater it has now become possible to resolve the complex mixtures of organics in seawater and achieve the required very low detection limits. Fortunately, the interest in micro-constituents in the seawater both from the environmental and the nutrient balance points of view has coincided with the availability of advanced instrumentation capable of meeting the analytical needs. This complete and up-to-date compilation of the currently employed proven methods for the chemical analysis of seawaters includes 45 tables and 48 figures.
Analysis of microdata
The availability of microdata has increased rapidly over the last decades, and standard statistical and econometric software packages for data analysis include ever more sophisticated modeling options. The goal of this book is to familiarize readers with a wide range of commonly used models, and thereby to enable them to become critical consumers of current empirical research, and to conduct their own empirical analyses.
Analog Circuit Design : Sensors, Actuators and Power Drivers ; Integrated Power Amplifiers from Wireline to RF ; Very High Frequency Front Ends
This book is part of the Analog Circuit Design series and contains the revised contributions of all speakers of the 16th AACD Workshop, which was organized by Jan Sevenhans of AMI Semiconductor and held in Oostende, Belgium on March 27-29, 2007. The book comprises 17 tutorial papers, divided in three chapters, each discussing a very relevant topic in present days analog design.
Analog Circuit Design : High-Speed A-D Converters, Automotive Electronics and Ultra-Low Power Wireless
This book is number 15 in this successful series of Analog Circuit Design, providing valuable information and excellent overviews of analog circuit design and related CAD, mainly in the fields of basic analog modules, mixed-signal electronics, AD and DA converters, RF systems, and automotive electronics.
An Introduction to Computational Micromechanics
This book presents a comprehensive introduction to computational micromechanics, including basic homogenization theory, microstructural optimization and multifield analysis of heterogeneous materials. "An Introduction to Computational Micromechanics".
An Interactive Multimedia Introduction to Signal Processing
A didactic concept is undertaken for microelectronics, computer technology and communication engineering, which deals with the visualization of signals and processes in addition to graphical programming of signal processing systems. Through the utilization of a professional and globally supported software for metrology and control engineering, DasyLab, useful applications can be developed, modified and optimized. Computer supported processing of real signals is made possible over the sound card and the parallel port. Over two hundred pre-programmed signal engineering systems and design transparencies are provided. Pictures also play a dominant rule in this book: there are numerous introduction-videos, one for every chapter, more than 250 high-quality pictures and - most important – all the "living" experiments and their results are visualized. With this learning system, readers can now make use of "equipment" and software, which was practically unaffordable for individuals in the past. What's more, here is a very new concept for learning Signal Processing, not only from the physically-based scientific fundamentals, but also from the didactic perspective, based on modern results of brain research.
An illustrated guide to oral histology
Delivers a collection of high-definition histological and pathological images, presenting both diseased and normal oral tissues. also includes core topics such as: An introduction to tooth development, including the bud, cap, early bell, and late bell stages A thorough exploration of enamel, dentin, cementum and dental pulp A discussion of the periodontal ligament, including alveolar crest fibers, horizontal, oblique, apical, and inter-radicular fibers, transseptal fibers, and gingival fibers A guide to alveolar bone, oral mucosa, and salivary glands Perfect for postgraduate dental students, An Illustrated Guide to Oral Histology will also be useful to undergraduate dental students, and those looking to improve their understanding of the microscopic structure of dental tissues and their pathologies.
AmIware : Hardware Technology Drivers of Ambient Intelligence
Ambient Intelligence is one of the new paradigms in the development of information and communication technology, which has attracted much attention over the past years. The aim is the to integrate technology into people environment in such a way that it improves their daily lives in terms of well-being, creativity, and productivity. Ambient Intelligence is a multidisciplinary concept, which heavily builds on a number of fundamental breakthroughs that have been achieved in the development of new hardware concepts over the past years. New insights in nano and micro electronics, packaging and interconnection technology, large-area electronics, energy scavenging devices, wireless sensors, low power electronics and computing platforms enable the realization of the heaven of ambient intelligence by overcoming the hell of physics.
Amino acid biosynthesis : Pathways, regulation and metabolic engineering
Amino Acids Biosynthesis presents the current knowledge of fundamental as well as applied microbiology of amino acids. Topics discussed are the amino acid biosynthetic pathways, their genetic and biochemical regulation, transport of amino acids and genomics of producing microorganisms. The characterization of the control mechanisms of amino acid biosynthesis has revealed insights into principles of genetic and biochemical regulation, such as transcriptional regulators and a new class of regulatory elements, the riboswitch. The volume further deals with the metabolic engineering of microorganisms for the biotechnological production of amino acids for use as pharmaceuticals and, particularly, as food and feed additives.
Amazing numbers in biology
With hundreds of tables and over 10,000 entries anyone who works or studies in the life sciences or those with a curious mind will find exact answers to many questions requiring comparative data. This book is a clearly laid out presentation of the plain facts of life from all areas of biology. None of those figures or superlatives that might seem exotic to the layman is left out. Biology comes alive by this comprehensive references work.
Alzheimers disease : Cellular and molecular aspects of Amyloid beta
This book contains a survey of present-day research into the biomedical fundamentals of Alzheimer’s disease (AD). It contains 20 chapters dealing with widely ranging topics, all of which have a bearing upon the understanding and treatment of AD. Starting with a broad survey of the contribution that the various microscopical techniques (light microscopy, electron microscopy, atomic force microscopy)
Alternative breast imaging : Four model-based approaches
Medical imaging has been transformed over the past 30 years by the advent of computerized tomography (CT), magnetic resonance imaging (MRI), and various advances in x-ray and ultrasonic techniques. An enabling force behind this progress has been the (so far) exponentially increasing power of computers, which has made it practical to explore fundamentally new approaches. In particular, what our group terms "model-based" modalities-which produce tissue property images from data using nonlinear, iterative numerical modeling techniques-have become increasingly feasible. Alternative Breast Imaging: Four Model-Based Approaches explores our research on four such modalities, particularly with regard to imaging of the breast: (1) MR elastography (MRE), (2) electrical impedance spectroscopy (EIS), (3) microwave imaging spectroscopy (MIS), and (4) near infrared spectroscopic imaging (NIS).
Alkaliphiles : Genetic properties and applications of enzymes
The pioneering work of Dr. Koki Horikoshi on the discovery, research and applications of alkaliphilic bacteria are described here in their entirety. The isolation, distribution and taxonomy of alkaliphilic microorganisms as well as their cell structure and physiology are discussed for a basic understanding of these entities. The molecular biology and genome sequencing of some alkaliphilic bacterial strains are also presented. Part II of the volume focuses on enzymes of alkaliphiles and their applications. These include alkaline proteases, starch-degrading enzymes and numerous others. Some of these enzymes are currently in wide commercial use as laundry detergent additives and in wastewater treatment. Alkaliphiles are a relatively recent field of research that will no doubt provide avenues to a wide range of further discoveries and applications for a new generation of workers in bioscience and technology.
Alicyclobacillus : Thermophilic Acidophilic Bacilli
Soft drinks with pHs lower than 4. 0 are subjected to minimum pasteuri- tion at 65 °C for 10 min as required by the Japanese Food Sanitation Law. Not only pathogenic bacteria but most spore-forming bacteria are unable to grow at this low pH condition, and thus reports of microbial spoilage in pasteurized acidic soft drinks are rare. Since 1982, when the spoilage of aseptically packed apple juice was - tributed to a new type of acidophilic spore-forming bacteria in Germany, a succession of similar complaints regarding other fruit juice concentrates and their products has been received. In the beginning, the bacteria were classified in the genus Bacillus, but later, in 1992, the new genus Ali- clobacillus was proposed owing to their characteristic cellular membranes containing omega-alicyclic fatty acids. A group of Alicyclobacillus strains, responsible for the tainting of fruit juices, was then described as A. a- doterrestris in 1999. They are acidophilic and grow preferably at around pH 4. 0. They are thermophilic and grow better at temperatures above 40 °C. This indicates that we might have been missing them by our or- nary methods of bacterial detection at pH 7. 0 and 35 °C.
Algebraic Analysis of Differential Equations : from Microlocal Analysis to Exponential Asymptotics Festschrift in Honor of Takahiro Kawai Editors
This volume contains 23 articles on algebraic analysis of differential equations and related topics, most of which were presented as papers at the international conference "Algebraic Analysis of Differential Equations – from Microlocal Analysis to Exponential Asymptotics" at Kyoto University in 2005. Microlocal analysis and exponential asymptotics are intimately connected and provide powerful tools that have been applied to linear and non-linear differential equations as well as many related fields such as real and complex analysis, integral transforms, spectral theory, inverse problems, integrable systems, and mathematical physics. The articles contained here present many new results and ideas, providing interested researchers and students with valuable suggestions and instructive guidance for their work.
Algal Chemical Ecology
This is the first ever book devoted entirely to the chemical ecology of algae. Algae from both marine and freshwater habitats are covered, as are macroalgae (seaweeds) and microalgae (including phytoplankton). While its main emphasis is on the ecological rather than chemical aspects of the field, the book also includes a unique introductory chapter intended as a primer on algal natural products chemistry for ecologists. It elucidates the roles of chemical defenses in various regions and habitats, of DMSP, oxidative burst responses, and herbivore offense. Topics such as algal sensory chemical ecology and defenses against ultraviolet radiation are also treated, and an introduction to the chemical ecology of phytoplankton is provided.
