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Scanning tunneling microscopy (STM) and its extensions have become revolutionary tools in the fields of physics, materials science, chemistry, and biology. These new microscopies have evolved from their beginnings asresearch aids to their current use as commercial tools in the laboratory and on the factory floor. New wonders continue to unfold as STM delivers atomic scale imaging and electrical characterization of the newly emerging nanometer world. This volume in the METHODS OF EXPERIMENTAL PHYSICS Series describes the basics of scanning tunneling microscopy, provides a fundamental theoretica

Tunnelboring--Spectraalanalyse --- Tunneling spectroscopy --- Tunnels--Percement--Analyse spectrale --- Scanning tunneling microscopy. --- Microscopie à effet tunnel --- Scanning tunneling microscopy --- STM (Microscopy) --- Scanning probe microscopy

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Les sols sont une ressource essentielle à préserver pour la production d’aliments, de fibres, de biomasse, pour la filtration de l’eau, la préservation de la biodiversité et le stockage du carbone. En tant que réservoirs de carbone, les sols sont par ailleurs appelés à jouer un rôle primordial dans la lutte contre l’augmentation de la concentration de gaz à effet de serre. Ils sont ainsi au centre des objectifs de développement durable (ODD) des Nations unies, notamment les ODD 2 « Faim zéro », 13 « Lutte contre le changement climatique », 15 « Vie terrestre », 12 « Consommation et production responsables » ou encore 1 « Pas de pauvreté ». Cet ouvrage présente un état des lieux des sols africains dans toute leur diversité, mais au-delà, il documente les capacités de stockage de carbone selon les types de sols et leurs usages en Afrique. Il propose également des recommandations autour de l’acquisition et de l’interprétation des données, ainsi que des options pour préserver, voire augmenter les stocks de carbone dans les sols. Tous les chercheurs et acteurs du développement impliqués dans les recherches sur le rôle du carbone des sols sont concernés par cette synthèse collective. Fruit d’une collaboration entre chercheurs africains et européens, ce livre insiste sur la nécessité de prendre en compte la grande variété des contextes agricoles et forestiers africains pour améliorer nos connaissances sur les capacités de stockage de carbone des sols et lutter contre le changement climatique.

Environmental Studies --- carbone --- agriculture --- Afrique --- développement --- écologie --- climatologie --- agronomie --- lutte contre le changement climatique --- changement climatique --- gaz à effet de serre --- forêt --- alimentation --- sol --- économie du développement

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From the names of cruise lines and bookstores to an Australian ranch and a nudist camp outside of Atlanta, the word serendipity--that happy blend of wisdom and luck by which something is discovered not quite by accident--is today ubiquitous. This book traces the word's eventful history from its 1754 coinage into the twentieth century--chronicling along the way much of what we now call the natural and social sciences. The book charts where the term went, with whom it resided, and how it fared. We cross oceans and academic specialties and meet those people, both famous and now obscure, who have used and abused serendipity. We encounter a linguistic sage, walk down the illustrious halls of the Harvard Medical School, attend the (serendipitous) birth of penicillin, and meet someone who "manages serendipity" for the U.S. Navy. The story of serendipity is fascinating; that of The Travels and Adventures of Serendipity, equally so. Written in the 1950's by already-eminent sociologist Robert Merton and Elinor Barber, the book--though occasionally and most tantalizingly cited--was intentionally never published. This is all the more curious because it so remarkably anticipated subsequent battles over research and funding--many of which centered on the role of serendipity in science. Finally, shortly after his ninety-first birthday, following Barber's death and preceding his own by but a little, Merton agreed to expand and publish this major work. Beautifully written, the book is permeated by the prodigious intellectual curiosity and generosity that characterized Merton's influential On the Shoulders of Giants. Absolutely entertaining as the history of a word, the book is also tremendously important to all who value the miracle of intellectual discovery. It represents Merton's lifelong protest against that rhetoric of science that defines discovery as anything other than a messy blend of inspiration, perspiration, error, and happy chance--anything other than serendipity.

Chance in science --- Découvertes fortuites en science --- Scientific serendipity --- Serendip [Effet] --- Serendipity in science --- Toevallige ontdekkingen in de wetenschap --- Serendipity in science. --- Science --- Social aspects. --- Science and society --- Sociology of science --- Social aspects --- Sociology of knowledge --- SERENDIPITY --- SERENDIPITE --- SCIENCES --- ASPECT SOCIAL

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Most therapeutics available today are highly toxic, very expensive and exhibit minimum efficacy. The issue of toxicity is even more critical for prevention than for therapy because the former involves normal subjects. Thus, therapeutics that are safe and affordable are needed for both prevention and therapy. Spices of Southeast Asian origin, once employed for taste, appearance and preservation of food, now appear to have therapeutic value for humans. What the active principles in these spices are and how they mediate their effect against various diseases are beginning to emerge from extensive

Spices --- Medicinal plants --- Drug plants --- Plants, Useful --- Botanical drug industry --- Botany, Medical --- Materia medica, Vegetable --- Psychotropic plants --- Condiments --- Therapeutic use. --- Physiological effect. --- Analysis. --- Phytotherapy. --- Plants, Medicinal --- Medicine, Traditional. --- Ethnopharmacology. --- Epices --- Plantes médicinales --- analysis. --- chemistry. --- Physiological effect --- Analysis --- Emploi en thérapeutique --- Effet physiologique --- Analyse

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SERS for Point-of-care and Clinical Applications focuses on the use of Surface-Enhanced Raman Spectroscopy (also known as Surface-Enhanced Raman Scattering) techniques in clinical and point-of-care settings. Sections provide an overview of SERS biomedical applications, providing in-depth information about point-of-care and clinical applications of SERS using specific examples from current literature. These applications are not always immediately evident to newcomers in the field, as Raman and SERS are often introduced as analytical methods for chemical analysis.

Raman effect, Surface enhanced. --- Biomedical engineering. --- Clinical engineering --- Medical engineering --- Bioengineering --- Biophysics --- Engineering --- Medicine --- Enhanced Raman scattering --- Surface enhanced Raman effect --- Surface enhanced Raman scattering --- Surface chemistry --- Surfaces (Physics) --- Raman, Effet augmenté en surface. --- Génie biomédical. --- Point-of-care testing. --- Clinical medicine. --- Spectrum Analysis, Raman --- Point-of-Care Testing --- Clinical Medicine --- methods