News tagged with harvests
Artificial light-harvesting method achieves 100% energy transfer efficiency
(PhysOrg.com) -- In an attempt to mimic the photosynthetic systems found in plants and some bacteria, scientists have taken a step toward developing an artificial light-harvesting system (LHS) that meets one ...
Sep 01, 2011 |
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Quick jolt of energy could improve energy harvesting by a factor of 40
(PhysOrg.com) -- Harvesting mechanical energy from the environment and converting it into electrical energy has recently become a viable method for powering low-energy electronics, such as sensors and actuators. ...
Jul 21, 2010 |
4.5 / 5 (22) |
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Porphyrin Dimers Increase Efficiency of Dye-Sensitized Solar Cells
(PhysOrg.com) -- Porphyrins are most commonly thought of as the pigment in red blood cells, but now scientists have found that porphyrins can also be used to increase the efficiency of an inexpensive type ...
Oct 30, 2009 |
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Climate flux matched Europe's social rise and fall
Ancient tree rings show links between climate change and major events in human history, like migrations, plagues and the rise and fall of empires, said a study this week in the journal Science.
Space & Earth / Earth Sciences
Jan 14, 2011 |
4.4 / 5 (14) |
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Micromachined piezoelectric harvester drives fully autonomous wireless sensor
For the first time, a piezoelectric harvesting device fabricated by MEMS technology generates a record of 85μW electrical power from vibrations. A wafer level packaging method was developed for robustness. ...
Dec 15, 2009 |
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Students harness vibrations from wind for electricity
(PhysOrg.com) -- The Vibro-Wind Research Group is working on an efficient, low-cost method of converting vibrations from wind energy to electricity.
Technology / Energy & Green Tech
May 26, 2010 |
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Pickin' Up Good Vibrations to Produce Green Electricity
(PhysOrg.com) -- Vibrations from the environments we live and work in could be much more widely harnessed as a clean source of electricity, due to cutting-edge UK research.
Nov 30, 2009 |
4.1 / 5 (11) |
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Mechanical motion rectifier leads to better energy harvesting
(Phys.org) -- Mechanical energy is all around us, whether in the form of a vehicle's vibrations, ocean waves, or vibrating train tracks. However, much of this energy is irregular and oscillatory - for example, road bumps ...
Apr 25, 2012 |
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Nanogenerators for energy harvesting technology
The journal, Nano Letters, recently published an article highlighting the fascinating nanogenerators developed by Dr. Yong Shi, a professor in the Mechanical Engineering Department at Stevens Institute of Technology. The pa ...
Jul 09, 2010 |
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Energy harvesting skin generates power from air conditioners
(PhysOrg.com) -- Devices that harvest ambient energy from the surrounding environment have become popular since, for some applications, they eliminate the need for batteries that must constantly be replaced. ...
Apr 20, 2011 |
4.9 / 5 (7) |
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UK scientists develop optimum piezoelectric energy harvesters
Scientists working as part of the Metrology for Energy Harvesting Project have developed a new model to deliver the maximum power output for piezoelectric energy harvesters.
Mar 02, 2012 |
4.4 / 5 (7) |
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Why is the harvest moon so big and orange?
Ever wonder why the moon sometimes looks so big and orange? Professor Emeritus John Percy of the Department of Astronomy and Astrophysics explains the mystery behind the harvest moon:
Space & Earth / Space Exploration
Oct 01, 2010 |
4.1 / 5 (7) |
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Award-winning energy harvester brings practical applications closer
(PhysOrg.com) -- Although the idea of harvesting ambient energy from the environment and using it to generate electricity is alluring, most of the technology so far is capable of generating only very small ...
Dec 01, 2011 |
5 / 5 (5) |
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NOAA bans commercial harvesting of krill
The National Oceanic and Atmospheric Administration (NOAA) today published a final rule in the Federal Register prohibiting the harvesting of krill in the Exclusive Economic Zone (EEZ) off the coasts of California, Oregon, ...
Jul 13, 2009 |
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Nanowires exhibit giant piezoelectricity
Gallium nitride (GaN) and zinc oxide (ZnO) are among the most technologically relevant semiconducting materials. Gallium nitride is ubiquitous today in optoelectronic elements such as blue lasers (hence the blue-ray disc) ...
Jan 26, 2011 |
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Harvest
Harvest is the process of gathering mature crops from the fields. Reaping is the cutting of grain or pulse for harvest, typically using a scythe, sickle, or reaper. The harvest marks the end of the growing season, or the growing cycle for a particular crop, and social importance of this event makes it the focus of seasonal celebrations such as a harvest festival, found in many religions. On smaller farms with minimal mechanization, harvesting is the most labor-intensive activity of the growing season. On large, mechanized farms, harvesting utilizes the most expensive and sophisticated farm machinery, like the combine harvester. Harvesting in general usage includes an immediate post-harvest handling, all of the actions taken immediately after removing the crop—cooling, sorting, cleaning, packing—up to the point of further on-farm processing, or shipping to the wholesale or consumer market.
For more information about Harvest, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
