الصفحة 534
الصفحة 534
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.
Essential oils : sources, production and applications
Essential oils are simply the volatile oils of plants. These are concentrated liquids contain many terpenes, alkaloids and alcohols etc. Various compounds of essential oils have bioactive properties such as antimicrobial, anti-cancer, anti-diabetic, anti-viral and anti-fungal etc. This book describes the sources of essential oils, extraction and production method, characterizing tools, bioactivity, and various applications in the field of industries, daily usage, agriculture, health, and food.
Essential NMR : For Scientists and Engineers
ESSENTIAL NMR is a set of lecture notes for scientists and engineers who want to brush up on their knowledge of NMR. This book is also a compendium for graduate and postgraduate students of physics and chemistry as well as for their teachers, covering all fields of NMR, i.e. NMR methodology and hardware, chemical analysis, 2D-spectroscopy, NMR imaging, flow NMR, and quality control NMR. The material, selected and organized for a one-semester course, is presented with pairs of pages addressing particular topics. One page of each pair provides a text containing the key information, the other page shows a color illustration. This is the most comprehensive textbook on NMR to date.
Essential microbiology for dentistry
Supports a new generation of dental students in their understanding of microbiom and oral microbiota, basic immunology, oral and systemic infections and cross-infection control. Fully updated throughout with the latest developments in oral microbiology, microbiomics, disease prevention and control, Essential Microbiology for Dentistry will be essential for all undergraduates studying dentistry as well as anyone undertaking postgraduate training.
Essential Fish Habitat Mapping in the Mediterranean
This book presents latest advances in EFH mapping and modelling and introduces the environmental approach to EFH identification through the combined use of latest technologies and advanced techniques, such as Remote Sensing, Geographic Information Systems and Spatial Statistics.The contents of this book include overviews and comparisons of different approaches on species habitat modelling, methods to identify teleconnection patterns between large-scale meteo-oceanic phenomena and local environmental variation, and EFH maps for cephalopod, shrimp, hake, anchovy, sardine, and swordfish resources in the Mediterranean.
Essential endodontology : Prevention and treatment of apical periodontitis
Includes the most recent developments in the field, maintaining its position as the major scientific treatise of apical periodontitis. Making an often-complex subject more digestible, the book explores the scientific basis of endodontology, adopting a systematic analysis of the available clinical and laboratory evidence.
Essential echocardiography : A practical guide
A Practical Handbook serves as today's premier practical guide to the understanding of the most commonly used cardiac imaging technique in the world. The perfect marriage between anatomy and physiology, the text covers emerging cardiac imaging technologies, advances in ultrasound technology, as well as new techniques and applications of cardiac ultrasound. Essential Echocardiography: A Practical Handbook provides the physiological, anatomical, and diagnostic grounding for all students of cardiac ultrasound, as well as a sound basis for a more general understanding of cardiac imaging.
Essential discrete mathematics for computer science
An ideal introductory textbook for standard undergraduate courses, and is also suitable for high school courses, distance education for adult learners, and self-study. The essential introduction to discrete mathematics / Features thirty-one short chapters, each suitable for a single class lesson / Includes more than 300 exercises / Almost every formula and theorem proved in full / Breadth of content makes the book adaptable to a variety of courses / Each chapter includes a concise summary
Essential Dental Public Health
Split into four parts covering all the need-to-know aspects of the subject: the principles of dental public health, oral epidemiology, prevention and oral health promotion, and the governance and organization of health services. Essential Dental Public Health is an ideal introduction to the field for dentistry undergraduates, as well as being a helpful reference for postgraduates and practitioners.
Essential cob construction : A guide to design, engineering and building
Presents both hands-on and rigorous technical information on how to build code compliant, low-embodied carbon, and fire- and earthquake-resistant buildings from cob--a mix of clay, sand and straw. The definitive cob guide for engineers, architects, designers, contractors, and owner-builders.
Essential Cases on Natural Causation
This first volume covers one key aspect of tortious liability – natural causation. The conditio sine qua non rule is examined and tested throughout all jurisdictions, in particular with an eye on whether and to what extent courts are willing to deviate from the strict concept of this formula.
Essential Cardiology : Principles and Practice
The ideal textbook of cardiology lies between the very detailed and enormous encyclopedias of cardiology and the diminutive manuals and handbooks that provide a quick but superficial tour of the field. Clive Rosendorff, md, phd, and a panel of researchers and clinician-scientists, who are all leaders in their fields, create such a text with their second edition of Essential Cardiology: Principles and Practice. Drawing on years of practical experience, as well as the enormous number of recent scientific and clinical advances.
Essays on Transport Economics
This book covers the basic analytical methods used in transportation economics and policy analysis. Encompassing fields of economics such as Industrial Organisation, Welfare Economics, General Equilibrium Theory and Input-Output-Analysis.
Essays on Accounting Theory in Honour of Joel S. Demski
This rigorous scholarly work focuses on the analysis of corporate accounting reports as a source of information used in corporate decision-making and in pricing securities by the capital market.
Essays in Honor of Edwin Mansfield: The Economics of R&D, Innovation, and Technological Change
As appreciation and remembrance for his scholarly contributions, eminent scholars have contributed original papers for this edited volume. The authors have followed the "Mansfieldian” approach of emphasizing economic insight and intuition over mathematical rigor and as a result are very accessable.
Essays in Constructive Mathematics
This book aims to promote constructive mathematics, not by defining it or formalizing it, but by practicing it, by basing all definitions and proofs on finite algorithms. The topics covered derive from classic works of nineteenth century mathematics---among them Galois' theory of algebraic equations, Gauss's theory of binary quadratic forms and Abel's theorem about integrals of rational differentials on algebraic curves. It is not surprising that the first two topics can be treated constructively---although the constructive treatments shed a surprising amount of light on them---but the last topic, involving integrals and differentials as it does, might seem to call for infinite processes. In this case too, however, finite algorithms suffice to define the genus of an algebraic curve, to prove that birationally equivalent curves have the same genus, and to prove the Riemann-Roch theorem. The main algorithm in this case is Newton's polygon, which is given a full treatment. Other topics covered include the fundamental theorem of algebra, the factorization of polynomials over an algebraic number field, and the spectral theorem for symmetric matrices.
ESR Spectroscopy in Membrane Biophysics
Membrane proteins offer the greatest challenge in structural biology, and there is an urgent need to develop and apply new biophysical methodologies that are able to generate detailed structural information. Among modern biophysical techniques, site-directed spin-labeling electron spin resonance (SDSL-ESR) appears to show the highest potential to further develop the field. The objective of this book is to provide in-depth information about new advances of SDSL-ESR in membrane biophysics, emphasizing recent developments in the application to membrane proteins.
Espaces vectoriels topologiques : Chapitres 1à 5 = Topological vector spaces : Chapters 1 to 5
The Mathematics Elements of Nicolas BOURBAKI aim to provide a rigorous, systematic presentation without prerequisites of mathematics from their foundations. This book is the fifth of the treatise; it is devoted to the basics of functional analysis. It contains in particular the Hahn-Banach theorem and the Banach-Steinhaus theorem.
Esercizi di fisica : Meccanica e termodinamica = Physics exercises : Mechanics and thermodynamics
La risoluzione di esercizi rappresenta uno strumento indispensabile per raggiungere una comprensione sicura e approfondita dei concetti di Fisica appresi dai corsi e dai testi di teoria. Frutto di una lunga esperienza didattica dei due autori nell'insegnamento universitario della meccanica e della termodinamica, questa raccolta contiene 188 esercizi, di cui 91 completamente risolti ed accompagnati da un ampio corredo di figure. Il peimo capitolo presenta un'introduzione ai sistemi di unità di misura, al calcolo dimensionale, all'uso corretto delle cifre significative e degli arrotondamenti, ai grafici. Gli altri capitoli contengono gli esercizi, suddivisi per argomento e preceduti da una serie di paragrafi riassuntivi dei concetti fondamentali. Criterio ispiratore di questo lavoro è l'adozione di una metodologia per la soluzione degli esercizi basata sempre sull'analisi accurata dei dati a disposizione e sul riferimento ai principi e alle leggi della Fisica, mai alla sola intuizione.
Esercizi di finanza matematica = Mathematical finance exercises
This is a collection of exercises that illustrates some fundamental aspects of Mathematical Finance, in particular the valuation of derivatives. It is aimed at students of master's degree courses, but can also be successfully used in first level degree courses, by students who have adequate mathematical training (degree courses in mathematics, engineering). The resolution of the exercises is addressed with the use of methods of both Probability Theory (stochastic processes) and Mathematical Analysis (Partial Derivative Equations).
