| High-Speed_Video This site is dedicated to high-speed and DV video technology. It gives an overview of camera and interface types. |
| HQ_Inc Fomerly HTI Technologies. Manufactures the patented Cortemp Ingestible Core Body Temperature Pill , the CorTemp ambulatory data monitor, and wireless sensing systems that are used in agriculture, indu |
| Human_Solutions_GmbH Offers solutions for human modeling and body scanning. Products include Ramsis, Bodybuilder, Anthropos, Retailor, Xfit, and Anthroscan. |
| Immersion_Corporation Haptic interface products and tactile feedback technology featuring the virtual glove, intravenous catheterization and force feedback technologies. |
| MicroStrain_Inc Wireless sensor networks, wireless data acquisition systems inclinometers, orientation sensors, IMUs, microminiature displacement sensors, LVDTs. |
| NexGen_Ergonomics Software and tools for job analysis, data acquisition, movement analysis, EMG, noise analysis, temperature sensing, vibration analysis, and anthropometric measurements. |
| Noldus_Information_Technology Observer - professional system for collection, analysis, presentation and management of observational data. |
| Noraxon_USA,_Inc_ Information and service center for surface and fine wire EMG, electrodes, goniometer, footswitch and telemetry. Contains product descriptions and application guides for applying measurement technolog |
| Novel Pressure distribution measuring systems for barefoot, in-shoe, seat interface, horse saddle, tire, knee-joint as well as numerous other applications. |
| Peak_Performance_Technologies,_Inc_ Peak Motus motion capture systems use video with proprietary hardware to capture the coordinates of moving points via a Windows interface. |
| PLM_Solutions_-_e-Factory Solutions for factory modeling, layout analysis, CAM, press-line simulation, and Jack, which is a human modeling software that enables users to position digital humans in virtual environments, assign |
| Positive_Interaction_Task_Analysis_System Customizable software for hierarchical task analysis. Suitable for complex system design, risk analysis, documentation, and training design. |
| Pressure_Profile_Systems Provides solutions for measuring distributed tactile and contact pressures. |
| Safework,_Inc_ Software for total design life cycle human modeling. Addresses issues associated with human fit, form, and function. |
| SAMMIE_CAD A computer based human modelling tool. Application areas include the layout design, control panel design, cockpit, cabin and interior evaluations, field of view and reflection evaluations, and mainten |
| Seeing_Machines Specializes in non-contact head and eye tracking systems, such as faceLAB, which provides head pose and eye gaze information, as well as fatigue measurements. |
| SensoMotoric_Instruments Eye movement measurement and evaluation systems. |
| SIMI_Reality_Motion_Systems 2D and 3D movement kinematics analysis software. |
| Tekscan,_Inc_ Dynamic tactile force and pressure measurement systems and sensors for the Industrial, Medical, Dental, and OEM markets. Applications range from grip, ergonomics, and in-shoe gait analysis to tire tre |
| Vicon_Motion_Systems Enables user to conduct multiple variable permutations, tracking head movements, motor reaction and conduct ingress-egress, and seated operator studies. |
| ViewPoint Provides tools for animal behavior analysis such as video tracking systems, manual event recorder, digital video recorder, infrared cages, and dedicated software for applications in neurosciences, pha |
| WorldViz_PPT WorldViz Precision Position Tracker tracks multiple targets over large areas (30 x 30 feet or more) with sub-millimeter precision. It is suitable for real-time immersive virtual reality applications. |
| zebris_Medizintechnik_GmbH Biomechanics measurement systems for 3D measurements, spinal analysis, gait analysis, equilibrium analysis, hand and arm function, EMG measurement, force distribution, jaw movement, and analysis of le |
| Contaminated_Soil_Sediment_and_Water Publication of the Association for Environmental Health and Sciences (AEHS) concerned with the challenge of environmental assessment, protection, cleanup and remediation. |
| Envimed Environmental medicine online including information resources from the book Environmental Medicine by L. Moller (ed.). |
| Environmental_Health_and_Safety_Products News magazine for environmental professionals, with focus on environmental health topics. Site has links to related information resources. |
| Health,_Safety_and_Environment_on_the_Internet Focus on risk analysis and evaluation. |
| HingePin_ Book available -- on the relationship between environment, food quality, and disease, citing research from indexed journals in environmental medicine, clinical ecology, toxicology, molecular biology, |
| How_the_Weather_affects_Your_Health Learn about environmental factors that influence human well-being. |
| Journal_of_Occupational_and_Environmental_Medicine A journal of the American College of Occupational and Environmental Medicine. Table of contents, author guidelines, editorial board and subscription information. |
| MedBioWorld\'s_Public_Health_&_Environmental_Health_Journals Directory of links to public health, environmental medicine and hospital management journals. |
| British-American_Chamber_of_Commerce_of_Northern_California Supplies standards documents from British, European and international standardization to customers in the US. |
| Greborio_Software_Engineering_s_a_s_ Maker of the software Screws@2000 that contains standards relevant for screws, including exportable graphics. Site has listings of the standards covered. |
| IHS_Australia sells Australian and international standards, technical documents and publications, online databases and hardcopy documents. |
| IHS_Global_Engineering_Documents Distributor of U.S., international and national standards, specifications and technical publications. |
| ILI_Infodisk,_Inc_ Sells hardcopy standards documents and access to online standards, materials and EU legal databases. |
| The_ISO17799_Electronic_Shop Online shop selling ISO 17799 and a small number of related standards documents. |
| The_ISO17799_Standards_Online Online shop selling ISO 17799 and a small number of related standards documents. |
| MIL-Standards_com sells two CDs with MIL standards in PDF format and offers over 200 documents including MIL-STD-1629, MIL-HDBK-217 and MIL-HDBK-338 for download. |
| NEN-Normshop_-_the_Dutch_Standards_Shop Buy Dutch, European and International standards documents. |
Focus needs your help: Take the survey and help us improve this site. Previous Story / Next Story / Volume 3 archive Phys. Rev. Lett. 82, 509 (issue of 18 January 1999) Title and Authors 
Argonne National Laboratory World's most sensitive detector. Peter Reiter works on Gammasphere, which has 110 germanium detectors at its service to track down the most elusive gamma rays. According to classical physics, elements with more than 100 protons in their nuclei should fly apart almost as soon as they are created, because of the tremendous electric repulsion between the protons. But surprisingly, they are relatively stable. Physicists have built up quantum mechanical theories to explain the observation, and now there is some experimental verification of these theories in the 18 January PRL. A collaboration of physicists has discovered that the nucleus of the heavy element nobelium is deformed like a football by the same amount that the theories predict. The experiments have also revealed some new information: Even in states of extremely high spin this delicately bound nucleus remains intact and does not fly apart.Protons and neutrons in a nucleus organize themselves into energy levels, just as electrons do in an atom, and nuclei with fully filled energy levels are remarkably stable. Lead, with its 82 protons and 126 neutrons, is the heaviest known element with such a stable, "magic number" of nucleons. Although theorists find it difficult to calculate the next magic number, they had long expected to find a stable element with at least 114 protons, surrounded in the periodic table by unstable elements. Instead, experiments began turning up a range of nuclei with up to 112 protons that seemed to be protected against spontaneously breaking up, so theorists went back to the drawing board to find out why. The key to this "nonmagic" stability seemed to be a deformation of the nucleus into a football shape.Teng Lek Khoo and Peter Reiter of the Argonne National Laboratory in Illinois and a number of collaborators set out to look for signs of this deformation in nobelium, which has 102 protons and 152 neutrons. The deformation, they knew, would show up in the spectrum of gamma rays emitted by the nucleus as it decayed from one rotational state to another. The challenge was twofold: to make enough nobelium, and to weed out the gamma rays released by the nobelium from a background that was about 10,000 times stronger. "We literally had to fish out a needle from a haystack," says Khoo. What made the experiment possible, he adds, was the combination of Gammasphere--a new array of 110 germanium detectors--with an Argonne machine called the Fragment Mass Analyzer (FMA).To make nobelium, the ATLAS accelerator at Argonne smashed calcium nuclei into lead targets. The products of the collision then flew through the FMA, which recognized the nobelium nuclei by their masses and flight times. To be absolutely certain they were observing the right nuclei, the team used a silicon detector to spot nobelium's distinctive signature of alpha particles as it decays. Correlating the arrival times of those alphas with the times of gamma ray detections, the researchers could isolate the nobelium gamma signal from the large background. The difference in energy of gamma rays coming from different rotational states confirmed that the amount of deformation of the nucleus was close to what was predicted by theories. The team also used the data to deduce the spin of the nuclei and found values as high as 14 units of angular momentum.Witold Nazarewicz of the University of Tennessee in Knoxville sees multiple rewards for nuclear physicists from these experiments. "They confirm the models," he says, and they give theorists an incentive to calculate the stability of these nuclei at high spins. "Before, there was no strong experimental motivation to do that." He also believes that these experiments might lead to ways to fabricate and study truly heavy elements--those with up to 126 protons--to test the theories that predict which elements are magic. --Meher Antia Meher Antia is a freelance science writer. Ground-State Band and Deformation of the Z = 102 Isotope254No P. Reiter et al. Phys. Rev. Lett. 82, 509 (issue of 18 January 1999) Previous Story / Next Story / Volume 3 archive 
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