This text is a synthesis of research in production and management since the inception of the discipline as an agricultural science in the 1930s. All the ecological regions are covered extensively, but the main emphasis is on the three biomes (grassland, savanna and karoo) which produce the bulk of the forage supporting the domestic livestock, conservation and the game farming industries. The book has an audience beyond the borders of South Africa in the grassland and savanna areas which stretch through southern and central Africa.;The text is aimed at students concerned with the management of natural ecosystems and also livestock producers and game ranchers who rely on the veld to feed their animals. The text throughout emphasizes the interpretation and application of research results to the practical situation.;All major aspects of veld production and management are covered in this book. It outlines the physiological and ecological principles on which management is based and which underpin the science. The book presents management options based on these underlying principles before dealing with recommended management procedures in each of the main ecological regions of the country.;The contributions to this book collectively represent a component of the expertise available on issues related to veld management in South Africa. They are veld and animal production researchers, conservation managers and planners working both at a practical level, closely in touch with livestock and game farmers, and at the more theoretical level as teachers at colleges and universities.

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.

From the author of The Quest for the Original Horse Whisperers (1 84282 020 6) Russell Lyon has written his memoirs as a country vet. From his first day in the job, practising lassoing animals on an oil drum, to his thoughts on current veterinary trends, animal rights and farming this is an entertaining and absorbing read. Full of anecdotes, incidents and characterful patients and customers.

In the summer of 1893, at the Columbian Exposition in Chicago, an engineering marvel was unveiled and immediately captured the world's attention. It was a towering, web-like giant wheel, standing upright and rotating high above the city. Several stories taller than any existing American building, the Ferris Wheel carried adventure-seeking passengers to the dizzying height of 264 feet and provided panoramic views never before possible. George W. G. Ferris Jr. and his wheel helped usher America - eager to identify itself with ingenuity, entrepreneurialism, and innovation - into the 20th century. Yet the very wheel that came to define George Ferris in the end consumed him, leaving him ruined. This book is the first full-length biography of George Ferris. He was a civil engineer, an inventor, and a pioneer for his development of structural steel in bridge building. ""Circles in the Sky"" chronicles the life of the man responsible for creating, designing, and building the Ferris Wheel, the only structure of its time to rival the Eiffel Tower. It is, at the same time, the story of the Ferris clan, one of the nation's oldest and most fascinating families. The London Eye, erected in 1999 to welcome the new millennium, the Star of Nanchang, and most recently, the Singapore Flyer, have revived our love affair with Ferris wheels. Circles in the Sky will enchant anyone interested in engineering marvels, history, and the Ferris wheel, which reminds us that America was built by dreamers and innovators such as George W. G. Ferris Jr.

Terwyl die gronddebat woed, stel dié boek ons voor aan die landbouers wat die kos verbou waarvan Suid-Afrika leef. Ivor Price en Kobus Louwrens gee ons 'n intieme blik in die daaglikse plaaslewe en uiteenlopende boere se belewenisse en stories. Of dit nou reuse agribesighede is, of klein maar geliefde plasies wat met passie bewerk word, elke boerdery is uniek en elke boer het 'n storie. 'n Inspirerende ode aan ons landbouers. 

Approx.400 pages