نتایج جستجو برای: fruit harvesters
تعداد نتایج: 71804 فیلتر نتایج به سال:
BACKGROUND Previous studies suggest that humans can acquire immunity to reinfection with schistosomes, most probably due to immunologic mechanisms acquired after exposure to dying schistosome worms. METHODOLOGY/PRINCIPAL FINDINGS We followed longitudinally two cohorts of adult males occupationally exposed to Schistosoma mansoni by washing cars (120 men) or harvesting sand (53 men) in Lake Vic...
Pyroelectric energy conversion is a novel energy process which directly transforms waste heat energy from cyclic heating into electricity via the pyroelectric effect. Application of a periodic temperature profile to pyroelectric cells is necessary to achieve temperature variation rates for generating an electrical output. The critical consideration in the periodic temperature profile is the fre...
More than a decade of research in the field of thermal, motion, vibration and electromagnetic radiation energy harvesting has yielded increasing power output and smaller embodiments. Power management circuits for rectification and DC–DC conversion are becoming able to efficiently convert the power from these energy harvesters. This paper summarizes recent energy harvesting results and their pow...
This paper proposes collision-free structure using NdFeB thin-film magnet for vibration energy harvesters. By using stripe shaped NdFeB magnet array on the Si MEMS structure, we finally obtained 3 mN of magnetic repulsive force on 8 × 8 mm specimen with 40 μm air-gap.
BACKGROUND Although leptospirosis is a reemerging zoonosis of global importance, outbreaks related to agricultural exposures are primarily situated in tropical countries. In July 2007, a suspected leptospirosis outbreak was recognized among strawberry harvesters from Eastern Europe who were working in Germany. An investigation was initiated to identify the outbreak source and the risk factors f...
Articles you may be interested in Piezoelectric energy harvester converting strain energy into kinetic energy for extremely low frequency operation Appl. Energy harvesting from ambient low-frequency magnetic field using magneto-mechano-electric composite cantilever Appl. Frequency up-converted wide bandwidth piezoelectric energy harvester using mechanical impact Nonlinear output properties of c...
Sustainable, green energy harvesting has gained a considerable amount of attention over the last few decades and within its vast field resources, bio-energy harvesters have become promising. These appear in wide variety function either by directly generating with mechanisms similar to living organisms or indirectly extracting from organisms. Presently this new generation is fueling various low-...
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