الصفحة 3
الصفحة 3
Geography and Drug Addiction
لإhis book contains drug addiction contributes to better understanding the etiology of addiction, its diffusion, its interaction with geographically variable environmental, social, and economic factors, and the strategies for its treatment and prevention. This book explores links between geography and drug abuse and identifies research ideas, connections, and research pathways which point to some promising avenues for future work in this area
Generalized collocations methods : Solutions to nonlinear problems
This book examines various mathematical tools—based on generalized collocation methods—to solve nonlinear problems related to partial differential and integro-differential equations. Covered are specific problems and models related to vehicular traffic flow, population dynamics, wave phenomena, heat convection and diffusion, transport phenomena, and pollution. Based on a unified approach combining modeling, mathematical methods, and scientific computation, each chapter begins with several examples and problems solved by computational methods; full details of the solution techniques used are given. The last section of each chapter provides problems and exercises giving readers the opportunity to practice using the mathematical tools already presented.
Gas Transport in Porous Media
This book presents a compilation of state-of-the art studies on gas and vapor transport processes in porous and fractured media. A broad set of models and processes is presented, including advection/diffusion, the Dusty Gas Model, enhanced vapor diffusion, phase change, coupled processes, solid/vapor sorption, and vapor-pressure lowering. Numerous applications are also presented that illustrate these processes and models in current problems facing the scientific community.
Functional MRI : Basic principles and clinical applications
This practical and timely volume presents an overview of the principles of fMRI and explains key concepts, including scanning methodologies, experimental research design, and data analysis. Informative discussions cover the technical and clinical challenges associated with fMRI. A neuroanatomical atlas adds to the sensible approach and serves as a useful reference by clearly illustrating normal functioning for important areas of the brain.
Frontiers in Quantum Systems in Chemistry and Physics
The basic theory of matter on the nanoscale is quantum mechanics and the application of quantum mechanics to the study of the many-body problem in molecules and materials is a rapidly developing field of research. Frontiers in Quantum Systems in Chemistry and Physics defines the leading edge; hence it describes the new theoretical developments available to a wider audience and presents theories which provide, for example, new insights into the structure of increasing complex molecular systems or molecules in a variety of environments. New computational techniques and practices are accessed, exploiting the wide range of equipment available to the researcher from “leadership” class supercomputers to distributed workstations and the internet.
Fractional-in-time semilinear parabolic equations and applications
This book provides a unified analysis and scheme for the existence and uniqueness of strong and mild solutions to certain fractional kinetic equations. This class of equations is characterized by the presence of a nonlinear time-dependent source, generally of arbitrary growth in the unknown function, a time derivative in the sense of Caputo and the presence of a large class of diffusion operators. The global regularity problem is then treated separately and the analysis is extended to some systems of fractional kinetic equations, including prey-predator models of Volterra–Lotka type and chemical reactions models, all of them possibly containing some fractional kinetics.
Fluorescence of supermolecules, polymers, and nanosystems
The field of fluorescence continues to steadily grow, both in its fundamental aspects and in applications in highly interdisciplinary areas including analytical, physical and organic chemistry, molecular sciences, biology, biomedicine and medical research. The 4th volume in the Springer Series on Fluorescence focuses on the fluorescence of nanosystems, polymers and supermolecules, and the development and application of fluorescent probes. Special emphasis is placed on the fluorescence of artificial and biological nanosystems, single molecule fluorescence and the luminescence of polymers, micro- and nanoparticles and nanotubes. Fluorescence microscopy and fluorescence correlation spectroscopy are covered as well. Historical aspects of this growing field and an overview of fluorescence applications are also provided.
Flexible Databases Supporting Imprecision and Uncertainty
This volume collects selected contributions on the application of heterogeneous methods for managing uncertainty and imprecision in databases. It contains both survey chapters on classic topics such as "flexible querying in databases", and up to date ontributions on "database models to represent imperfect data". Further, it includes specific contributions on uncertainty management in database integration, and in representing and querying semistructured and spatial data. These topics are of particular relevance nowadays with the diffusion of the internet since, most of the time, applications require information spread across several information sources and their integration may result in inconsistent information.
Finite Elements III : First-Order and Time-Dependent PDEs
Volume III is divided into 28 chapters. The first eight chapters focus on the symmetric positive systems of first-order PDEs called Friedrichs' systems. This part of the book presents a comprehensive and unified treatment of various stabilization techniques from the existing literature. It discusses applications to advection and advection-diffusion equations and various PDEs written in mixed form such as Darcy and Stokes flows and Maxwell's equations. The remainder of Volume III addresses time-dependent problems: parabolic equations (such as the heat equation), evolution equations without coercivity (Stokes flows, Friedrichs' systems), and nonlinear hyperbolic equations (scalar conservation equations, hyperbolic systems). It offers a fresh perspective on the analysis of well-known time-stepping methods. The last five chapters discuss the approximation of hyperbolic equations with finite elements. Here again a new perspective is proposed.
Fashionity
This project is an AI fashion design system to generate fashion images based on user textual description. The proposed system incorporates advanced technology for dissemination and machine translation with the aim of facilitating a seamless user experience for input in both Arabic and English languages. Moreover, the project encompasses the incorporation of a recommendation system that proposes appropriate visual content based on user style. The primary objective of this project is to develop a robust framework capable of generating high-quality images based on textual descriptions, providing recommendations for similar clothing items, and facilitating the retrieval of photographic and apparel articles through image search.
Extracting Methods of Essential laurel oil and Fixed oil, Their effects on bacteria
Laurus nobilis is an evergreen plant belonging to the Lauraceae family, native to Southern Europe and the Mediterranean area. This is the report on the composition and bioactivity of laurel essential oil (EO) from leaves and extraction essential oil by two solvents (water and ethanol 69%) using by two devices (Clevenger and evaporator) then we apply the effect of oil and extract on the bacteria. there are some differences between the extraction by water and ethanol . The antibacterial properties of laurel EOs were examined according to the agar well diffusion method The leaf EO showed antibacterial activities against almost all strains of the microorganisms tested, whereas the twig EO was only able to inhibit Staphylococcus aurous and Escherichia coli were the bacterial strains that showed the highest resistance to the laurel EO. The results can benefit the EO industry and bio pesticide development.
Exponentially Dichotomous Operators and Applications
In this monograph the natural evolution operators of autonomous first-order differential equations with exponential dichotomy on an arbitrary Banach space are studied in detail. Characterizations of these so-called exponentially dichotomous operators in terms of their resolvents and additive and multiplicative perturbation results are given. The general theory of the first three chapters is then followed by applications to Wiener-Hopf factorization and Riccati equations, transport equations, diffusion equations of indefinite Sturm-Liouville type, noncausal infinite-dimensional linear continuous-time systems, and functional differential equations of mixed type.
Essential oils as antibacterial agents
An alarm increase in the rate of emerging of resistant 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 antibiotics. An experimental approach, using agar diffusion method was used to estimate the antibacterial properties of 5 essential oils (cinnamon, clove, peppermint, rosemary and thyme) each one individually, in pure and commercial form, against 3 of the bacterial strains that cause common skin infections which are gram negative bacteria (Escherichia coli, Pseudomonas aeruginosa) and gram positive bacteria (Staphylococcus aureus), obtained from clinical sources. Only two of the commercial oils had an antibacterial effect on both gram negative bacteria (E. coli) and gram positive bacteria (S. aureus) and in lesser extent on gram negative bacteria (P. aeruginosa).synergy.
Equazioni a derivate parzial I : Complementi ed esercizi
La presente raccolta di problemi ed esercizi nasce dall'esperienza maturata durante il corso di Equazioni a Derivate Parziali (EDP), tenuto nell'ambito delle lauree di primo e secondo livello presso il Politecnico di Milano. Il volume è diviso in due parti; nei primi quattro capitoli l'obiettivo è l'uso di tecniche classiche, come la separazione delle variabili, il principio di massimo o le trasformate di Laplace e Fourier, per risolvere problemi di diffusione, trasporto e vibrazione. Il quinto capitolo invita a familiarizzare con i risultati di base negli spazi di Hilbert, nella teoria delle distribuzioni (o funzioni generalizzate) di Schwartz e in quella degli spazi di Sobolev più comuni. Il sesto ed ultimo capitolo riguarda la formulazione variazionale o debole dei più importanti problemi iniziali e/o al bordo per equazioni ellittiche e di evoluzione. L'introduzione ad ogni capitolo contiene una sintesi degli strumenti teorici più utilizzati.
Entrepreneurship and innovation : Theory, practice and context, 4th
Provides an overview of the theory, Practice and context of entrepreneurship and innovation at both the industry and firm level. It provides a foundation of ideas and understandings designed to shape the reader’s thinking and behaviour to better appreciate the role of innovation and entrepreneurship in modern economies, And to recognise their own abilities in this regard. The book provides the reader with an overview of these elements and how they combine to create new value in the market.
Eigenvalues, Inequalities, and Ergodic Theory
A problem of broad interest – the estimation of the spectral gap for matrices or differential operators (Markov chains or diffusions) – is covered in this book. The area has a wide range of applications, and provides a tool to describe the phase transitions and the effectiveness of random algorithms. In particular, the book studies a subset of the general problem, taking some approaches that have, up till now, only appeared largely in the Chinese literature.Eigenvalues, Inequalities and Ergodic Theory serves as an introduction to this developing field, and provides an overview of the methods used, in an accessible and concise manner.
Effect of Clove essential oil and Rosemary aqueous extract for future promising triple acting gel
In this study, antimicrobial properties of rosemary essential oil (Rosmarinus officinalis-REO), rosemary aqueous extract, clove essential oil (Syzygium aromaticum-CEO) and their mixtures (REO/CEO) at 10% and 20% concentration for each one have been evaluated. The agar well diffusion method has been used for screening the antimicrobial activity against Staphylococcus aureus, Staphylococcus albus, Streptococcus, Enterococcus Salmonella, Escherichia coli, Acinetobacter, Pseudomonas aeruginosa, Candida albicans In Staph. Aureus, Salmonella, E.coli, Acinetobacter and p.aeruginosa...
Diversity and Evolution of Butterfly Wing Patterns : An Integrative Approach
is book facilitates an integrative understanding of the development, genetics and evolution of butterfly wing patterns. To develop a deep and realistic understanding of the diversity and evolution of butterfly wing patterns, it is essential and necessary to approach the problem from various kinds of key research fields such as “evo-devo,” “eco-devo,” ”developmental genetics,” “ecology and adaptation,” “food plants,” and “theoretical modeling.”
Digital Transformation in Norwegian Enterprises
Presents a number of case studies on digital transformation in Norway, one of the fore-runners in the digital progress index established by the European Commission in 2020. They explore the process of adoption, diffusion and value generation from digital technologies, and how the use of different digital solutions has enabled Norwegian enterprises to digitally transform their operations and business models.
Digital cities III : Information technologies for social capital: Cross-cultural Perspectives ; 3rd international digital cities workshop, Amsterdam, The Netherlands, September 18-19, 2003, Revised Selected Papers
Digital cities constitutes a multidisciplinary field of research and development, where researchers, designers and developers of communityware interact and collaborate with social scientists studying the use and effects of these kinds of infrastructures and systems in their local application context. The field is rather young. After the diffusion of ICT in the world of organizations and companies, ICT entered everyday life. And this also influenced ICT research and development. The 1998 Workshop on Communityware and Social Interaction in Kyoto was an early meeting in which this emerging field was discussed.
