| Physorg Features news about semiconductor technology with scientific discussions. |
| European_Association_for_Solar_Energy Non-partisan independent organization that is independent of industry, political institutions promoting solar energy by conducting conferences and awarding prizes. [English, German] |
| Messier_Marathon An astronomy site with links including a NGC, a Messier search tool. |
| Seqool Free Windows software tool for the analysis of DNA and RNA sequences. It includes several sequence statistics and a comprehensive set of signal search methods. |
| NTE_Electronics,_Inc_ NTE is a supplier of active, passive and electromechanical electronic components. Cross reference for resistors, relays, and semiconductors. |
| Transistor_Cross_Reference_Database Based on Pacific Semiconductor's 40,000 transistors database. |
| ASTOS The Aerospace Trajectory Optimization Software is a tool for solving launcher, reentry and orbit trajectory problems without any programming. ASTOS is a special aerospace model of GESOP, which solves |
| DAP Preliminary new kitplane analysis that allows you to evaluate a new airplane, or performance changes resulting from modifications. |
| DARcorporation Airplane design, analysis & drafting Software. Also offers consultancy and testing services. List of references and clients. FAQ and evaluation programs. |
| Diversified_International_Sciences_Corporation Specializing in Air Traffic Control (ATC) Services, Information Technology Services and the Atom System. Provides systems, services and consulting expertise. |
| Flight_Gear_Flight_Simulator Open Source flight simulator. Source code is available here, and it can run on Windows, Linux, Mac platforms. |
| FlightGear_Flight_Simulator An open-source, multi-platform, cooperative flight simulator development project. Source code for the entire project is available and licensed under the GNU General Public License. The goal of the pro |
| Hanley_Innovations Aerodynamics and Airfoil Analysis Software for Windows. Test airfoils, eBooks about aerodynamics, plot airfoil sections for airplane constructions. |
| High_Plains_Engineering Offers tools for flight control system design and flight test simulators, handling qualities, aircraft dynamics, data analysis and tests. |
| JSBSim_Flight_Dynamics_Model A free, open source, multi-platform flight dynamics model written in C++. New aircraft models do not require additional code. |
| Public_Domain_Aerospace_Software Software for the Aerospace Engineer. Site has free sample downloads. CD for sale containing many useful programs, including Digital DATCOM. |
| RocFlight__Rocket_Trajectory_Software Windows based, planar rocket trajectory software for launch vehicles traveling through the standard earth atmospheric model. Includes a database of common high power/model rocket motors, an optimal m |
| Rotordynamics-Seal_Research Offers consulting in rotordynamics as well as seal and bearing analysis software for hydrostatic, hydrodynamic, foil, magnetic and rolling element bearings. |
| Satellite_Tool_Kit Analytical engine to calculate data and display multiple 2-D maps to visualize various time-dependent information for satellites and other space-related objects such as launch vehicles, missiles, and |
| Scientific_Engineering_Research Offers programs for vibration analysis of non-linear rotor-bearing-foundation systems. By linearization in the vicinity of a stable equilibrium position or by direct solution of the non-linear differe |
| Xpatch High-frequency radar signature analysis and prediction software. |
| Zona_Technology Advanced aeroelastic, aeroservoelastic, flutter and flight loads software products. |
| Precambrian_Fossils Possible Precambrian trace fossils collected in the Van Horn region of Texas. |
| Virtual_Ichnology Computer model of trace fossil development through time. Part of the Computational Paleontology website. |
| Basic_Fish_Anatomy Outline of the external features including body shape, head, fins, gills, lateral line, coloring and swim bladder. |
| Dictionary_of_Ichthyology Defines terms used in the study of fishes and fisheries. |
| Fish A brief outline of the essential features of fish biology. |
| Fish_Keeping_Terms Glossary of technical terms used in fish biology. |
| Fish_on_Line A computer-based course on ichthyology for students in biology or environmental science. |
| The_Ichthyological_Society_of_Japan ISJ was established in 1968 to advance the study of fishes and fish biology. There is a meeting each October and it publishes members papers and the Japanese Journal of Ichthyology. In English and Jap |
| The_Identification_of_Oestrogenic_Effects_in_Wild_Fish Technical report into the occurrence of intersex in roach and gudgeon and the role played by treated sewage effluent in the feminizing effects observed in UK roach populations. |
| The_Impact_of_Environmental_Levels_of__Aquatic_Contaminants_on_Atlantic_Salmon Research into the impact of agricultural pesticides on sensitive stages of the life history of Salmonids. [PDF] |
| Induced_Reproduction_in_Fish Many species of fish will not readily reproduce under certain culture conditions. This article describes the natural breeding cycle and the induction of spawning. |
| NetMax’s_Aquaria_Site__Reproduction Information on fish reproduction and the rearing of fry, concentrating on the species usually found in aquaria. |
| New_Zealand_Native_Freshwater_Fish_Society_ This group hopes to raise awareness of native fish and increase scientific knowledge of them to try to prevent more from becoming extinct. |
| Technology_for_Fish_Propagation Janos Bakos provides comprehensive technical data on the conditions necessary for the reproduction of cultivated fish species. |
| Teleost_Fish_Morphology_and_Anatomy Instruction on examining the external and internal characteristics of a fish, as given to students on the marine biology course at Bangor University. |
| HubbleSite_-_Gallery At the official online home of NASA's Hubble Space Telescope exists a gallery of the best pictures that the Hubble has taken. |
| Interactive_Online_Telescope Control a super powerful telescope online with this interactive feature from AOL Research and Learn. |
| Planet_Photo_Gallery View photos of the solar system's planets and get more information on each. |
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