Die Suider-Afrikaanse subkontinent is besonder ryk aan inheemse boomspesies (sowat 2100) wat in grootte wissel van struikagtiges tot oeroue, hooggroeiende reuse. Baie van die boomspesies en die natuurlike omgewing waarin hulle voorkom, is al deeglik bestudeer en gedokumenteer in bele algemene beskikbare publikasies. Inligting oor hulle hour is egter beperk en nie maklik toeganklik vir die algemene publiek nie. Hierdie boek bevat inligting oor die hourkenmerke en houteienskappe van 140 Suider-Afrikaanse houtsoorte (134 inheemse en ses uitheemse spesies).

This book is devoted to the rapidly developing field of oxide thin-films and heterostructures. Oxide materials combined with atomic-scale precision in a heterostructure exhibit an abundance of macroscopic physical properties involving the strong coupling between the electronic, spin, and structural degrees of freedom, and the interplay between magnetism, ferroelectricity, and conductivity. Recent advances in thin-film deposition and characterization techniques made possible the experimental realization of such oxide heterostructures, promising novel functionalities and device concepts. The book consists of chapters on some of the key innovations in the field over recent years, including strongly correlated oxide heterostructures, magnetoelectric coupling and multiferroic materials, thermoelectric phenomena, and two-dimensional electron gases at oxide interfaces. The book covers the core principles, describes experimental approaches to fabricate and characterize oxide heterostructures, demonstrates new functional properties of these materials, and provides an overview of novel applications.

Climate change is a major challenge facing modern society. The chemistry of air and its influence on the climate system forms the main focus of this book. Vol. 2 of Chemistry of the Climate System takes a problem-based approach to presenting global atmospheric processes, evaluating the effects of changing air compositions as well as possibilities for interference with these processes through the use of chemistry.

Gerrie Radlof se gewilde Oloff die Seerowerreeks is oorspronklik tussen 1957 en 1961 uitgegee en het daarna reeds vier uitgawes beleef. Die verhale, wat in die 1740's afspeel aan die Kaap de Goede Hoop en die seewee daarom heen, is verwerk om aan te pas by die moderne taalgebruik en aan te sluit by die hedendaagse tiener, maar niks van die oorspronklike sjarme en spanning het in die verwerking verlore gegaan nie. Ook geskik as leesstof vir Afrikaans tweede taal vir ouer leerlinge.

On Listening is a unique collection of forty multi-disciplinary perspectives drawn from anthropology, bioacoustics, geography, literature, community activism, sociology, religion, philosophy, art history, conflict mediation and the sonic arts including music, ethnomusicology and field recording. These specially commissioned contributions explore the many ways in which skilled listening can mediate new relationships with our physical environment and the people and other species that we share it with. From the Introduction: Listening has become an increasingly popular subject of study. It features in conferences, in academic journals, in doctoral research projects. However, reflexive listening is an applied practice that exceeds the boundaries of academic institutions to take its place in a number of everyday settings. This book aims to connect the scholarly and the experiential and extend the contemporary discourse on listening.

This volume collects numerous recent advances in the study of stratified fluids. It includes analytical and experimental work from a wide range of fields, including meteorology, limnology, oceanography, and the study of estuarine processes. It also includes fundamental research on stratified and rotating fluid dynamics. A compendium of current work, the book is an ideal starting point for future research.

The conditions of our overpopulated planet with ever-growing energy needs, fossil fuels in limited supplies, and inefficient energy use world-wide, are creating a global crisis. Science has a responsibility, as well as a grand opportunity, to solve these energy-based problems of society. Science's new nanotechnologies, and the creativity they bring, are particularly appropriate to solve these problems. For example, energy-saving lighting, coupled with improved harvesting and conversion of sunlight into electric energy, will have a great impact on society's energy needs. Also, development of energy efficient and low cost fuel cells, which could eventually replace car engines, has a potential to improve everyday life greatly. Nanomaterials offer an opportunity to develop new low-cost materials as environmentally friendly solutions and renewable energy sources, in order to meet society's energy needs. Fortunately, a wide spectrum of the scientific community has become interested in developing these nanomaterials in order to solve the above energy challenges. Nanomaterials offer unique mechanical, catalytic, electronic, and optical features, which are different from those of the analogous bulk material (1). This is because nanomaterials have scale-dependent properties, due to quantum size effects, which means the nanomaterial size (10 - 100 nm) is smaller than the mean free path of their electrons. Thus, nanomaterials have great promise for use in harvesting solar energy, hydrogen production and storage, fuel cells, catalysis, chemical, optical sensors, drug delivery systems (such as liposomes), and nanothermite reactions (2-4). Fluorine-containing nanomaterials generally have certain unique properties which are often improved relative to the analogous non-fluorinated nanomaterials, and which therefore could be engineered. Although fluorine has the highest electronegativity of all the elements, which means that bonds to fluorine are generally quite polar, it is also in the second period of the periodic table, so it also has a small atomic radius and forms strong bonds. This produces the following properties, which also are characteristic of and bring great advantages to fluorine nanomaterials: high thermal and chemical stability, resistance to degradation by solvents, low flammability, low moisture absorption, low surface tension or energy, low dielectric constant, and serving as a strong oxidant under high energy conditions (5). However, little attention has been given to fluorine-containing organic and inorganic nanomaterials, which are predicted to have these unusual characteristics. This book presents examples of four diverse classes of these nanomaterials.

In 1923, Kansas governor Johnathan Davis traveled to Hutchinson to dedicate Emerson Careyas new rock salt mine whose shaft provided access to an ancient salt bed 650 feet under the earthas surface. The Carey Salt Mine, advertised as athe most modern in the world, a served as a companion to Careyas already-existing evaporation plants. Miners used the newest technology to blast and crush the mineral into gravel and haul it to the surface to provide rock salt for livestock, industries, and roads. Throughout the 20th century, thousands visited Careyas mining operations. Ever since the day Governor Davis presided over the opening ceremony, the Carey Salt Mine has served as a landmark for Hutchinson and helped shape its identity as athe Salt City.a

The full inside story of the high-stakes global race for the lifesaving vaccine to end the pandemic.

Heroic science. Chaotic politics. Billionaire entrepreneurs. In The First Shots, award-winning journalist Brendan Borrell brings to life the defining story of our times through absorbing, first-time reporting on those leading the fight against a vicious virus.

Borrell draws on exclusive, high-level access to take us inside the intense competition among brilliant scientists and the epic rivalries among Washington power players. His propulsive narrative depicts key players such as infectious-diseases expert Michael Callahan, who was secretly on the ground in Wuhan to gauge the terrifying ravages of ‘disease X’; Robert Kadlec, one of Operation Warp Speed’s architects, whose audacious plans ran straight into the buzz-saw of the Trump White House factions; and Stéphane Bancel of Moderna Therapeutics, the upstart company that went toe to toe with pharma behemoth Pfizer.

A real-life thriller playing out over eighteen months of fear, resolve and triumph, The First Shots lays bare the stunning story behind the medical-science ‘moonshot’ of our lifetimes.

Approx.400 pages

A rich fund of anecdotes drawn from the authora s time as an airline pilot and manager which spanned a forty year career, starting in the 1960s. Roughly tracing the authora s career, each story paints a different picture, be it be of a pilot, his faults and foibles, an experience the author had, a management problem and more. The backdrop is aviation but many of these stories could just as easily be transposed to a different setting. Most, but not all, have a strong flavour of humour and/or irony running through them. In todaya s world of political correctness and in a society otherwise constrained by litigious lawyers and an overbearing press many of these [mostly amusing] stories almost defy belief. Such has the world, and the world of aviation, moved on, few of the present crop of young pilots flying today would believe what went on behind closed doors. And neither would the rest of us!

Equip your learners with the tools for success in a career as a plumber with this comprehensive and updated edition of our bestselling textbook, published in association with City & Guilds. The newly updated and fully revised second edition will help learners: - Study with confidence, covering all core content for the 6035, 9189 and 8202 specifications, as well as the 355 and 356 plumbing and heating T Level occupational specialisms. - Target their learning with detailed qualification mapping grids. - Get to grips with technical content presented in accessible language. - Enhance their understanding of plumbing practice with clear and accurate illustrations and diagrams demonstrating the technical skills they need to master. - Practise maths and English in context, with embedded 'Improve your maths' and 'Improve your English' activities. - Test their knowledge with end-of-chapter practice questions and practical tasks. - Prepare for the workplace with up-to-date information on relevant key regulations and industry standards. - Keep their knowledge current, with clear coverage of major modern cold water, hot water, central heating, sanitation, rainwater systems and environmental technologies.