The earlier the smoke in a forest will be detected, the easier it would be for firemen to stop the fire from spreading. The problem of forest fires have always been one of the most difficult and dangerous problems. Russian scientists from MULTITECH Ltd. have developed an equipment, which can help solving the problem.
Right now the equipment is not of much use, because autumn rains have already quenched forest and turf fires. However, if the scientists put their invention to industrial production by the next summer, it will really improve the situation. Laser beam can easily detect a fire and then, if needed, alarm the operator at the central control. A single LID-Er, as it was named, can observe a square up to 100 thousand hectares.
A strong laser beam periodically controls atmosphere conditions. Smoke is opaque for laser light, so the beam reflects back. A special telescopic system "catches" the signal, amplifies it and sends to computer. If after several minutes (on the second pass) the smoke is detected once more at the same point, computer will compare intensities of first and second signals, taking more measures if needed and carrying out the process dynamics. If the smoke density gradually increases, the computer will send an alarm signal to the operators desk. Then its up to the operator to decides, whether to send a firemen brigade to the dangerous place.
Olga Maksimenko | alfa
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At the productronica trade fair in Munich this November, the Fraunhofer Institute for Laser Technology ILT will be presenting Laser-Based Tape-Automated Bonding, LaserTAB for short. The experts from Aachen will be demonstrating how new battery cells and power electronics can be micro-welded more efficiently and precisely than ever before thanks to new optics and robot support.
Fraunhofer ILT from Aachen relies on a clever combination of robotics and a laser scanner with new optics as well as process monitoring, which it has developed...
Plants and algae use the enzyme Rubisco to fix carbon dioxide, removing it from the atmosphere and converting it into biomass. Algae have figured out a way to increase the efficiency of carbon fixation. They gather most of their Rubisco into a ball-shaped microcompartment called the pyrenoid, which they flood with a high local concentration of carbon dioxide. A team of scientists at Princeton University, the Carnegie Institution for Science, Stanford University and the Max Plank Institute of Biochemistry have unravelled the mysteries of how the pyrenoid is assembled. These insights can help to engineer crops that remove more carbon dioxide from the atmosphere while producing more food.
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Our brains house extremely complex neuronal circuits, whose detailed structures are still largely unknown. This is especially true for the so-called cerebral cortex of mammals, where among other things vision, thoughts or spatial orientation are being computed. Here the rules by which nerve cells are connected to each other are only partly understood. A team of scientists around Moritz Helmstaedter at the Frankfiurt Max Planck Institute for Brain Research and Helene Schmidt (Humboldt University in Berlin) have now discovered a surprisingly precise nerve cell connectivity pattern in the part of the cerebral cortex that is responsible for orienting the individual animal or human in space.
The researchers report online in Nature (Schmidt et al., 2017. Axonal synapse sorting in medial entorhinal cortex, DOI: 10.1038/nature24005) that synapses in...
Whispering gallery mode (WGM) resonators are used to make tiny micro-lasers, sensors, switches, routers and other devices. These tiny structures rely on a...
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
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