This organization promotes sustainable agriculture. Their website provides publications on production practices, alternative crop and livestock enterprises, innovative marketing, and organic certification, and highlights of local, regional, USDA and other federal sustainable ag activities.

The Active Galaxies pop-up book is a very large rectangular pop-up book with foldouts that was developed for use in classrooms for grades 5 and up and for special needs audiences. Active galaxies, a major scientific target for the GLAST mission, contain super-massive black holes at their cores, and sometimes emit jets of particles and light. When opened, a model of an active galaxy with jets pops up out of the center. One foldout contains explanatory information for the parts of the galaxy depicted in the central pop-up as well as a glossary, while the other contains a well-tested classroom activity: Tasty Active Galaxy. The back of the book features a cartoon story -How the Galaxy Got Its Jets.

A coletânea de artigos constante neste volume apresenta uma série de estudos que cobre uma gama de áreas da Administração Rural, servindo de grande valia tanto para acadêmicos quanto para profissionais atuantes no mercado.

Although the basic theories of thermodynamics are adequately covered by a number of existing texts, there is little literature that addresses more advanced topics. In this comprehensive work the author redresses this balance, drawing on his twenty-five years of experience of teaching thermodynamics at undergraduate and postgraduate level, to produce a definitive text to cover thoroughly, advanced syllabuses. The book introduces the basic concepts which apply over the whole range of new technologies, considering: a new approach to cycles, enabling their irreversibility to be taken into account; a detailed study of combustion to show how the chemical energy in a fuel is converted into thermal energy and emissions; an analysis of fuel cells to give an understanding of the direct conversion of chemical energy to electrical power; a detailed study of property relationships to enable more sophisticated analyses to be made of both high and low temperature plant and irreversible thermodynamics, whose principles might hold a key to new ways of efficiently covering energy to power (e.g. solar energy, fuel cells). Worked examples are included in most of the chapters, followed by exercises with solutions. By developing thermodynamics from an explicitly equilibrium perspective, showing how all systems attempt to reach a state of equilibrium, and the effects of these systems when they cannot, the result is an unparalleled insight into the more advanced considerations when converting any form of energy into power, that will prove invaluable to students and professional engineers of all disciplines.

In this web-based, interactive story, Tutangiaq (Too-tang-geye-ack - nicknamed 2T), a Canada Goose, flies across Alaska looking for his family. As he flies, he tells children about the fascinating 49th state. Children learn how Alaska was purchased from the Russians, and other facts about the state. They can also compare the size of Alaska to other states. 2T takes a flight across the volcanic chain in Alaska and helps the students to interactively explore how scientists monitor volcanoes from satellite images in near-real time. At the coast, the bird also meets his Walrus friend who shows him how the sea ice edge has receded and gives an example of an adverse effect on marine life. Finally, 2T arrives in Fairbanks where children use satellite imagery to help 2T find and unite with his family.

The chemistry education resources that the American Chemical Society has placed on its website are quite impressive, and are a must see for teachers, motivated students, and even parents. Visitors will find "Classroom Resources" that range from "Elementary/Middle School" to "Two-Year Colleges" to "Graduate Education," near the top of the homepage. Also included on the Education Resources page are the categories of "Exams, Assessments, Study Aids," "Professional and Program Development," and "Student Programs." The latter category offers some "Games" with fun names in the Elementary and Middle School section. There is "Avogadro's Element Hunt," where students help Avogadro, a mole with glasses and green shoes, to find chemical elements in three rooms of his house. "Meg A. Mole's Bouncy Ball Factory" has a blue-shoed mole making a ball out of starch, borax and glue, but she waits for the student to decide how much of each goes into the mixer.

The American Mathematical Society (AMS) was founded in 1888 in order to further mathematical research and scholarship. Since that time, they have embarked on a number of outreach programs designed to educate the public about the importance of various mathematical endeavors. In the past several years, they have been developing the AMS Books Online website, and it's quite a resource. The works were all originally published by the AMS, and they can be browsed by author or subject. The subject headings include analysis, general interest, logic and foundations, and number theory. Users can download individual chapters from each book, and there are currently over thirty books available on the site. Visitors should make sure and check back, as there are plans to add books to the site periodically.

Hossein Arsham, Professor of Management Science and Statistics at the University of Baltimore, developed this site for his Applied Management Science course. The intent of the course is "to provide decision makers and analysts with tools that provide a logical structure for understanding problems as well as mathematical techniques for solving the problems that have been formulated." The web site contains notes on the methodology of management science, implementation of management science projects, optimization, linear programming, and formulation of network problems.

This is the education section of a larger site about the Aquarius underwater habitat in the Florida Keys. It includes classroom activities exploring concepts of buoyancy, pressure and light; a series of classroom activities exploring the biology of corals; and an on-line book about coral reef biology.

This website allows teachers to review three editions of the Astronomy: Journey to the Cosmic Frontier textbook. This website also provides teachers and students who are currently using the textbook resources that can be useful like web links, quizzes, images, and an ask the author discussion board.

A database containing Physical Reference Data is available online from the National Institute of Standards and Technology (NIST) (mentioned in the August 16, 1996 Scout Report for Science & Engineering). Atomic Spectral Line Broadening Bibliographic Database, includes 800 references containing "numerical data, general information, comments, and review articles." Users can conduct fielded searches (e.g., Element, Mechanism, etc.) of Papers with Numerical Data or General Interest Papers without Numerical Data, or search via Additional Criteria such as Author and Journal. Results yield listings of the articles but no hyperlinks.

BSCS is a nonprofit corporation that develops and supports the implementation of innovative science education curriculum for students in kindergarten through college.

This web site contains the resources developed for an upper level optics course. It includes a full textbook and video resources for both labs and demonstrations.

This is a complete textbook of liquid chromatography by Yuri Kazakevich and Harold McNair on the Web. It is extraordinarily comprehensive in its coverage of fundamental chromatographic theory and instrumentation.

This textbook contains a comprehensive tour of magnetic resonance imaging (MRI) including the underlying mathematics and physics, image processing, and also job opportunities. This textbook also includes homework problems with solutions.

An introduction to magnetic resonance imagining, which is based on the principles of nuclear magnetic resonance (NMR), a spectroscopic technique used by scientists to obtain microscopic chemical and physical information about molecules. See, in particular, The Mathematics of NMR: Exponential Functions, Trigonometric Functions, Differentials and Integrals, Vectors, Matrices, Coordinate Transformations, Convolutions, Imaginary Numbers, and The Fourier Transform. Includes a glossary, a list of symbols, and references. The text is available in English, Italian, and Russian.

Dr. Joseph Hornak of the Rochester Institute of Technology presents this high quality hypertextbook for in-depth coverage of the physics and technique behind Nuclear Magnetic Resonance (NMR) (For Dr. Hornak's Basics of MRI, see the August 4, 1999 Scout Report for Science & Engineering). The material is presented in a detailed and clear manner without over simplifying the concepts. Chapters include "The Mathematics of NMR," "Spin Physics," "NMR Spectroscopy," "Fourier Transforms," "Pulse Sequences," and much more. A chapter on "NMR Hardware" offers an overview of components (like the superconducting magnet and various coils) used in most NMR systems. The "Practical Considerations" chapter emphasizes spectroscopic techniques. With the screen split into two separate frames, explanatory graphics can be viewed alongside the text. A glossary and a list of symbols are also included in this carefully produced textbook.

This online workbook is used for training teachers and volunteers who wish to operate the Goldstone-Apple Valley Radio Telescope. The students in this district operate the telescope from the Apple Valley location. Also, students and teachers across the country can register to operate the telescope from their own classrooms. This workbook can also be used as a resource for information on how radio telescopes work, the fundamentals of the electromagnetic spectrum, thermal and non-thermal radiation, 21-cm hydrogen line, Kirchhoff's laws of spectral analysis, the Doppler effect, coordinate systems, and the SETI project.

This guide provides photographs and descriptions of biological control (or biocontrol) agents of insect, disease and weed pests in North America. It is also a tutorial on the concept and practice of biological control and integrated pest management (IPM). The guide currently includes individual pages of approximately 100 natural enemies of pest species, and continued expansion is planned. On each of these pages you will see photographs, descriptions of the life cycles and habits, and other useful information about each natural enemy. Four different types of natural enemies are covered in this guide, including parasitoids, predators, pathogens, and weed feeders. This information is broken down by family and the user may then select descriptions for any number of species.

Created by Frank B. Brokken of the Computing Center at the University of Groningen, this document is intended for ˘ď‹ďĐknowledgeable users of C (or any other language using a C-like grammar, like Perl or Java) who would like to know more about, or make the transition to, C++.˘ď‹ď Topics included are IO-streams, classes, memory allocation, and polymorphism. Also, the final chapter gives a number of concrete examples of C++ programs, classes, and templates which illustrate the concepts covered in the web page. This is an excellent site for students looking to learn C++ or for educators in computer programming.