نتایج جستجو برای: band absorber
تعداد نتایج: 141587 فیلتر نتایج به سال:
Sulphurization processes in Cu(In,Ga)Se$_2$ thin-film solar cells has been intensively studied the last decade as a viable alternative to existing Ga-grading. The main advantage of using S grading is that by substituting Se with we will achieve not only an upshift conduction-band minimum done employing Ga grading, but also downshift valence-band maximum. Several studies stipulate very often ins...
We present results of several pointed X–ray broad band observations of the 'symbiotic X–ray binary' 4U 1954+31 performed with the satellites BeppoSAX, EXOSAT, ROSAT, RXTE and Swift between October 1983 and April 2006. We also studied the RXTE ASM data over a period of more than 10 years, from January 1996 to October 2006. Light curves of all pointed observations show an erratic behaviour with s...
Gun Suk Yoo, Dong Il Kim, Dong Soo Choi Department of Radio Communication Engineering, Korea Maritime University Dongsam-Dong, Youngdo-Ku, Busan, 606-791, Korea, [email protected] Department of Radio Communication Engineering, Korea Maritime University Dongsam-Dong, Youngdo-Ku, Busan, 606-791, Korea, [email protected] Department of Radio Communication Engineering, Korea Maritime University D...
A detailed design methodology of a micro-scale 2-DOF energy harvesting device that can harvest human motion energy of low frequency and wide bandwidth is developed. Based on the concept of the 2-DOF vibration absorber, device parameters are selected to harvest energy at low frequency of 1 10 Hz and wide bandwidth with ±20% of the mean frequency, which matches the human motion. The device dimens...
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