Our dependence on healthy vegetable crops as a reliable source of food transcends all barriers of nation and culture. Consumers now demand excellent quality from the industry that produces large volumes of high quality vegetables to be sold locally, regionally and shipped internationally. The diseases that affect vegetables compromise such quality
On 31st October 1917, as the day's light faded, the Australian Light Horse charged against their enemy. Eight hundred men and horses galloped four miles across open country, towards the artillery, rifles and machine guns of the Turks occupying the seemingly unassailable town of Beersheba. What happened in the next hour changed the course of history. This brave battle and the extraordinary adventures that led to it are brought vividly to life by Australia's greatest storyteller, Peter FitzSimons. It is an epic tale of farm boys, drovers, bank clerks, dentists, poets and scoundrels transported to fight a war half a world away, and is full of incredible characters: from Major Banjo Paterson to Lawrence of Arabia; the brilliant writer Trooper Ion Idriess and the humble General Harry Chauvel; the tearaway Test fast bowler 'Tibby' Cotter and the infamous warhorse, Bill the Bastard. All have their part to play in the enthralling, sprawling drama of the Australian Light Horse. Theirs was a war fought in an ancient land with modern weapons; where the men of the Light Horse were trained in sight of the pyramids, drank in the brothels of Cairo and fought through lands known to them only as names from the Bible. The Last Charge of the Australian Light Horse traces the hard path of the Light Horse from the bleakest of starts - being deprived of their horses and fighting at Gallipoli in the tragic Battle of the Nek - to triumph and glory in the desert. Revealing the feats of the Australians who built the legend, it is a brilliantly told tale of courage, resilience and derring-do from Australia's favourite storyteller.
The observation, in 1919 by A.S. Eddington and collaborators, of the gra- tational de?ection of light by the Sun proved one of the many predictions of Einstein’s Theory of General Relativity: The Sun was the ?rst example of a gravitational lens. In 1936, Albert Einstein published an article in which he suggested - ing stars as gravitational lenses. A year later, Fritz Zwicky pointed out that galaxies would act as lenses much more likely than stars, and also gave a list of possible applications, as a means to determine the dark matter content of galaxies and clusters of galaxies. It was only in 1979 that the ?rst example of an extragalactic gravitational lens was provided by the observation of the distant quasar QSO 0957+0561, by D. Walsh, R.F. Carswell, and R.J. Weymann. A few years later, the ?rst lens showing images in the form of arcs was detected. The theory, observations, and applications of gravitational lensing cons- tute one of the most rapidly growing branches of astrophysics. The gravi- tional de?ection of light generated by mass concentrations along a light path producesmagni?cation,multiplicity,anddistortionofimages,anddelaysp- ton propagation from one line of sight relative to another. The huge amount of scienti?c work produced over the last decade on gravitational lensing has clearly revealed its already substantial and wide impact, and its potential for future astrophysical applications.
What we know about dark matter and what we have yet to discover Astronomical observations have confirmed dark matter’s existence, but what exactly is dark matter? In What Is Dark Matter?, particle physicist Peter Fisher introduces readers to one of the most intriguing frontiers of physics. We cannot actually see dark matter, a mysterious, nonluminous form of matter that is believed to account for about 27 percent of the mass-energy balance in the universe. But we know dark matter is present by observing its ghostly gravitational effects on the behavior and evolution of galaxies. Fisher brings readers quickly up to speed regarding the current state of the dark matter problem, offering relevant historical context as well as a close look at the cutting-edge research focused on revealing dark matter’s true nature. Could dark matter be a new type of particle—an axion or a Weakly Interacting Massive Particle (WIMP)—or something else? What have physicists ruled out so far—and why? What experimental searches are now underway and planned for the near future, in hopes of detecting dark matter on Earth or in space? Fisher explores these questions and more, illuminating what is known and unknown, and what a triumph it will be when scientists discover dark matter’s identity at last.
Wheat is produced on a greater area, grown over a wider geographic range, and traded internationally as a commodity more than any other arable crop. Wheat alone provides 20% of the calories and protein in the global human diet. Understanding the interactions between wheat production, the environment, and human nutrition is essential for meeting the demands of food security as we approach the middle of the 21st century. Wheat: Environment, Food and Health is written by two leading authorities in the field and offers insights into critical issues such as the sustainability of wheat production, the challenges of both mitigating and adapting to environmental change, and the effects of wheat consumption on human health. Covering a broad range of topics, the authors: Introduce the historical development and utilization of the wheat crop. Describe the factors affecting the quality and acceptability of wheat for different uses. Discuss the soil characteristics that are required for, and changed by, wheat production. Examine the water, temperature, and light requirements of wheat systems. Explore the methods and sustainability of plant breeding and farmer approaches to improving crop yields. Describe the development, structure, and composition of wheat grain. Discuss the contribution and impacts, both positive and negative, of wheat consumption on human health. • Discuss how modern technologies and new approaches are addressing the challenges of maintaining wheat production. Wheat: Environment, Food and Health is an essential resource for researchers and academics in disciplines including agriculture, plant biology, applied biology, botany, food science and nutrition, crop improvement, food security, environmental sustainability, and human health.
This second edition has been updated and substantially expanded. Starting with the description of our home galaxy, the Milky Way, this cogently written textbook introduces the reader to the astronomy of galaxies, their structure, active galactic nuclei, evolution and large scale distribution in the Universe. After an extensive and thorough introduction to modern observational and theoretical cosmology, the focus turns to the formation of structures and astronomical objects in the early Universe. The basics of classical astronomy and stellar astrophysics needed for extragalactic astronomy are provided in the appendix. While this book has grown out of introductory university courses on astronomy and astrophysics and includes a set of problems and solutions, it will not only benefit undergraduate students and lecturers; thanks to the comprehensive coverage of the field, even graduate students and researchers specializing in related fields will appreciate it as a valuable reference work.
As gritty as it is real. An amazing book about ordinary Australians made extraordinary by the times they lived through . . .' - Peter FitzSimons About 1300 Australians died in the desert campaigns of World War I, while another 3500 died in North Africa and the Middle East during World War II. Thousands more carried the wounds of war for the rest of their lives. Countless families were left behind to mourn the dead and comfort the injured. A ripple effect of grief passed down the generations. This is the story of Australia's desert wars as never before told. Using letters, diaries, interviews and unpublished memoirs, Desert Boys provides an intensely personal and gripping insight into the thoughts, feelings and experiences of two generations of Australian soldiers. In many cases these were fathers and sons going to successive wars with all the tragedy, adventure and hardship that brought. Desert Boys is a powerful and absorbing story of bravery and hope, of endurance and determination, of mateship and adversity a very long way from home.
Our dependence on healthy vegetable crops as a reliable source of food transcends all barriers of nation and culture. Consumers now demand excellent quality from the industry that produces large volumes of high quality vegetables to be sold locally, regionally and shipped internationally. The diseases that affect vegetables compromise such quality
Vegetable Diseases focuses primarily on diseases that are caused by pathogens. Chapters dealing with the general principles of the causes, diagnosis and control of vegetable crop diseases are followed by crop-based chapters. Each disease entry includes a brief introduction to the disease, detailed description of disease symptoms, information on the pathogen and disease development, and suggestions on how to manage the problem. Top quality color photos illustrate the book throughout. This book will be useful to a range of professionals including research and extension plant pathologists; diagnosticians and plant lab personnel; teachers of agriculture and related subjects; university students in agriculture and related fields; commercial farmers, vegetable producers, and farm managers; agriculturalists in the fields of seed production, vegetable breeding, agrichemicals, pest control, marketing, and other subjects; government and regulatory persons dealing with agriculture; serious gardeners and hobbyists. Crop based organisation for easy diagnosis High quality color photos 444 color illustrations, 5 tables
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