| Redwood-Cottonwood_Rivers_Control_Area Non-regulatory organization that works to enhance and protect the Redwood and Cottonwood Rivers. Site includes journals, technical information, news, events, images, and details of how to get involved |
| Revised_Universal_Soil_Loss_Equation_2_-_Overview_of_RUSLE2 Computer program that estimates rates of soil erosion caused by rainfall and associated overland flow. Free download available together with documentation and manuals. |
| Serious_Erosion_Areas A look at some of the serious erosion areas in the United States. |
| Soil_and_Water_Conservation_Society The Soil and Water Conservation Society is an international organization that fosters the science and the art of soil and water conservation to achieve sustained use of land resources. |
| Soil_Erosion_in_Agricultural_Systems Cause and effects of soil erosion in agricultural systems. |
| Soil_Erosion_Net Collection of information on soil erosion from a wide range of scientific disciplines. |
| Soil_Erosion_on_Farmland Online publication from New Zealand government sustainable agriculture program. Intended as a source of information for use by farmers, local government, farmer organisations, farm advisers and other |
| Soil_Resource_Management References about the fertility, compaction, testing and conservation of soil. Published by the University of Nebraska. |
| Sustainable_Agriculture_and_Rural_Development_ Sustaining and protecting the soil and natural resources for production. |
| Sustainable_Agriculture_Tour_--_Erosion_Control_Structures Diversion terraces, grassed waterways, surface inlets, and hedgerows are the most common structures used for soil conservation. |
| USDA-ARS_National_Soil_Erosion_Research_Laboratory Information regarding: Erosion process research, erosion control research, and delivery of improved erosion prediction technology. |
| Water_Erosion_Prediction_Project_(WEPP) The WEPP-model, developed by the U.S. Department of Agriculture, is a process-based, distributed model for soil erosion prediction. Model software and documentation can be obtained through this site. |
| About_Temperature A very basic (prepared for the middle school math teachers) tutorial but still useful for professionals. |
| All_Thermodynamics from HyperPhysics portal. This is rather a comprehensive online physics handbook containing "Thermodynamics" chapter. Site has a handle navigation, good illustrations, and very detail content. |
| Applied_Thermodynamics Definition and short explanations of terms, units and basic principles. |
| Basic_Terms_and_Theory from Engineers Edge. A definitions, short explanations and conection of basic thermodynamics therms. |
| Carnot_cycle Applet showing the physics processes of a Carnot heat engine by Fu-Kwun Hwang of the National TaĆÆwan Normal University. |
| A_Concise_History_of_Thermodynamics An overview of the history/evolution of thermodynamics. This is an excerpt from a biography of J. Willard Gibbs. The overview is available from the site in MS Word or pdf/Acrobat format. |
| Converter_of_physical_unit_ Comprehensive converter of different physical units, including thermodynamics. |
| The_Expert_System_For_Thermodynamics TEST is a visual environment to solve thermodynamics problems, pursue what-if scenarios and perform numerical experiments. |
| Fundamentals_of_Thermodynamics Lecture notes and problems from University of Pittsburg. |
| Ideal_Gas_Law Applet illustrating the ideal gas law : action of a piston in a pressure chamber filled with ideal gas. |
| Internal_Combustion_Engines_Web_Site Thermodynamics and heat transfer in Internal combustion engine. Applets are used to perform simple calculations. Developed at Colorado State University. |
| Properties_of_Heat_and_Matter Online book on Thermodynamics at UC Berkeley. |
| The_Second_Law_of_Thermodynamics A qualitative introduction to the second law and entropy written for beginners in chemistry but useful for physics students too. Explains relationship with Murphy's Law. |
| Thermo_Fluids_Engineering web page of the division of the Eindhoven University of Technology which study processes where fluid flows and heat transfer play a prominent role. |
| Thermodynamic_Toys Contains directions for making toys with thermodynamics background. |
| Thermodynamics_and_Its_Applications Companion site to the textbook by J. W. Tester and M. Modell, includes answers to selected problems and current errata. |
| Thermodynamics_and_Statistical_Physics Collection of educational sites explaining all aspects of thermodynamics. |
| Thermodynamics_and_Thermal_Physics About.com's index to thermodynamics information. |
| Thermodynamics_from_Prof__Ian_Waitz Basic thermodynamics course of 12 lectures, contains else the self-control questions with statistics of answers. |
| Thermodynamics_Research_Laboratory Classical, Quantum, Nanoscale & Statistical Thermodynamics & Mechanics data and property calculation Sites. |
| Arctic_Monitoring_and_Assessment_Programme Information about studies of contaminants in the Arctic environment, including sources, transport, and effects on biota and humans. |
| Bioassessment_and_Biocriteria U.S. EPA website includes a primer and FAQs on biological criteria and their application, guidelines on their use in aquatic ecosystems, case studies, and links/contacts for additional information. |
| California_Wildlife_Exposure_Factor_and_Toxicity_Database Search a compilation of exposure factors (i.e., ecological and physiological data) and toxicity data for a number of California mammals, birds, amphibians and reptiles. |
| Ecological_Risk_Analysis_Tools_and_Applications Information for use in conducting ecological screening and baseline risk assessments, from Oak Ridge National Laboratory (ORNL). |
| Ecotoxicology-L_Archives Provides discussion list focusing on risk assessment and ecotoxicology issues. On line LISTSERV at Virginia Tech. |
| Environmental_Contaminants_Encyclopedia General information about 118 elements, compounds, and products. U.S. National Park Service, February 1998. |
| Environmental_Toxicology_Laboratory ETL has developed a innovative environmental technology, the Tetramitus Assay. This bioassay detects toxicity in sediment, whole water and other samples. |
| European_Network_Bioindication Assess air quality by the use of bioindicator plants in eleven European cities. Provides information about the project, news, resources and results. |
| EXTOXNET_-_The_EXtension_TOXicology_NETwork Fully searchable and selectively retrievable databases of pesticide toxicology and environmental chemistry information. |
| IPMRC_Ecotoxicology_Page General introduction to ecotoxicology and information about its role in pest management. |
| Jason_Conder\'s_Ecotoxicology_Research Information on heavy metals research, career vitae, and links to other ecotoxicology sites. Research on bioavailability, toxicity, and environmental fate of TNT in aquatic sediments and heavy metal bi |
| Lemnatec Provides ecotoxicology testing products and services. Describes the Lemna (duckweed) bioassay test for detecting and evaluating hazardous substances in ecosystems. |
| MitoScan_Rapid_Mitochondria-based_Bioassays Toxicity test kits for diverse applications in environmental eco-toxicity monitoring, effluent management and product safety screening using a rapid mitochondria-based biosensor. |
| Pequitec Specialists for the supply and construction of ecotoxicology testing equipment and agricultural research equipment. |
| University_of_Antwerp_Laboratory_for_Ecophysiology,_Biochemistry_and_Toxicology Provides information on research. |
| Working_Group_Ecotoxicology Provides information on program at the Dresden University of Technology Institute of Hydrobiology. |
| Did_PCB\'s_Save_the_Stripers?_A_Fish_Story New York Times article about the fact that striped bass are thriving in the Hudson River because PCBs deter fishing, even though PCBs actually are harmful to the fish. However, fish in Newark Harbor h |
| Unknown_Contaminant_Found_In_Seabird_Eggs Researchers found an unidentified organohalogen contaminant in the eggs of Atlantic and Pacific Ocean seabirds. If a marine organism is the source, this would be the first insta |
| All_You_Wanted_to_Know_About_Magic_Squares Introduction to magic squares. Basic/C computer programs to generate odd squares. Calculates 8x8 squares with any given date on the first line. |
| Allmath_com__Magic_Squares_Game Interactive game to construct Magic Squares. Different degrees of difficulty and size of square. Hints and solutions provided. |
| Amof__Info_on_Magic_Squares The Amazing Mathematical Object Factory generator makes up to 10 squares of order 1 to 10. Brief history and introduction included. |
| The_Anti-Magic_Square_Project Starting from the definition of an Anti-Magic Square (AMS), the article presents the structure and construction methods of the AMS. Programs written in the c-language are available for download. |
| Constructing_all_magic_squares_of_order_three Mathematical approach to the generation of order three squares by applying MacMahon's partition analysis. [PDF] |
| Finding_Magic_Squares_Using_CCM The Chemical Casting Model (CCM) generation method is demonstrated with a Java Applet. Source code and description of algorithm included. (English/Japanese) [JRE required for Applet only]. |
| Generalized_Magic_Objects Aale de Winkel's site on generalized objects, with generating function f() and conditions g(), sequences and pseudo-rings. |
| Grog\'s_Magic_Squares Presents the "Magic Carpet" approach by "Grog". Downloads available for analyzers and creators in Excel format. |
| Java_applet A documented Java applet that generates Magic Squares using a given starting number, increment, and starting location. Row, column and diagonal sums are displayed on request. Odd orders up to 7 are |
| MAA__Ivars_Peterson\'s_MathLand__More_than_Magic_Squares Introduction with reference to Victor Hill and Bach. |
| Magic_Cubes Harvey Heinz's introduction to mathematical magic cubes including classification, a time-line and extensive bibliography." |
| Magic_Cubes The site presents a program for finding all possible order 3 cubes, executable and source included. |
| Magic_Cubes_and_Tesseracts Examples, original works, algorithms, and theorems on magic cubes, tesseracts, and hypercubes. (English/Japanese) |
| The_Magic_Encyclopedia Encyclopedia with articles relating to magic squares, cubes, hypercubes and other objects |
| Magic_Rectangles_and_Squares Presents 2xn and 3xn rectangles, as well as squares of order 4,5 and 8. Generation of the last by knight's tour. |
| Magic_Square_Puzzle Solve this 4x4 jig-saw puzzle. [Flash] |
