Introduces the characteristics and importance of air.

When it's not windy, it can be easy to forget about air. But air is everywhere–it fills your house, your car, and even your empty milk glass. In fact, a regular room holds about 75 pounds of it! This Level 1 book, reillustrated with John O'Brien's clever, eye–catching illustrations, tells you how to discover the air that's all around you.

This book presents revised guideline values for the four most common air pollutants - particulate matter, ozone, nitrogen dioxide and sulfur dioxide - based on a recent review of the accumulated scientific evidence. The rationale for selection of each guideline value is supported by a synthesis of information emerging from research on the health effects of each pollutant. As a result, these guidelines now also apply globally. They can be read in conjunction with Air quality guidelines for Europe, 2nd edition, which is still the authority on guideline values for all other air pollutants. As well as revised guideline values, this book makes a brief yet comprehensive review of the issues affecting the application of the guidelines in risk assessment and policy development. Further, it summarizes information on: . pollution sources and levels in various parts of the world, . population exposure and characteristics affecting sensitivity to pollution, . methods for quantifying the health burden of air pollution, and . the use of guidelines in developing air quality standards and other policy tools. Finally, the special case of indoor air pollution is explored. Prepared by a large team of renowned international experts who considered conditions in various parts of the globe, these guidelines are applicable throughout the world. They provide reliable guidance for policy-makers everywhere when considering the various options for air quality management.

A collection of poems for elementary students about the science of air, including oxygen, wind, hurricanes, and tornadoes.

Ingredient X: The Production of Effective Drugs deals with various aspects of pharmaceutical research and development, with emphasis on the importance of formulation ingredients on drug effectiveness and the role of the pharmaceutical development scientist in designing dosage forms for modern drugs. More than 50 illustrations are used to explain experiments and ""tools of the trade"". This book is comprised of four chapters and opens with an overview of research and development in the pharmaceutical industry, paying particular attention to the kind of work done by scientists according to the degree or level of training. The additives or so-called ""inert"" ingredients used in drug formulation are also considered. The next chapter explains how adding just the right amount of some ""inert"" ingredient—a factor X—can enhance the acceptability of a product to the user. The importance of maintaining drug potency in a dosage form, mainly through refrigeration or storage in cool places, is then discussed. The final chapter looks at the factors to consider to achieve the best possible drug formulation and most effective dosage form, including the safety factor. The need to establish correlations between laboratory quality tests and product performance during the development phase is highlighted. This monograph will be a useful resource for pharmacologists and pharmaceutical development scientists.

They can rule the half-pipe, but can they survive this? Jimmy, David, and Henry are psyched. It's summer, school's out, and they are on their way to California, where they will be able to do some major skating. But on the plane, the unthinkable happens: They are hijacked by terrorists. As frightened as they may be, they take action and they succeed. Sort of. They may have beaten the terrorists, but now their plane has crashed in the middle of nowhere and all of a sudden, their summer vacation is about finding food, shelter, and a rescue. Can three normal twelve-year-old boys find a way to get by without fast food and skate parks?