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Takeshi Uematsu,Noriyuki Hirano,Tamotsu Ninomiya,Masahito Syoyama 전력전자학회 1998 ICPE(ISPE)논문집 Vol.- No.-
A three-arm PWM UPS is realizable low price and small size UPS In this UPS configuration, the center arm operates in both PWM converter mode and PWM inverter mode. Therefore, the operation of this UPS differs from the conventional UPS. In this paper, the three-arm PWM UPS is analyzed and a trial product is realized.<br/>
Kondo, Makoto,Hirano, Yoshiaki,Ikai, Noriyuki,Kita, Kazumi,Jayanegara, Anuraga,Yokota, Hiro-Omi Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.11
Nutritive values of green and black tea by-products and anti-nutritive activity of their tannins were evaluated in an in vitro rumen fermentation using various molecular weights of polyethylene glycols (PEG), polyvinyl pyrrolidone (PVP) and polyvinyl polypyrrolidone as tannin-binding agents. Significant improvement in gas production by addition of PEG4000, 6000 and 20000 and PVP was observed only from black tea by-product, but not from green tea by-product. All tannin binding agents increased $NH_3$-N concentration from both green and black tea by-products in the fermentation medium, and the PEG6000 and 20000 showed relatively higher improvement in the $NH_3$-N concentration. The PEG6000 and 20000 also improved in vitro organic matter digestibility and metabolizable energy contents of both tea by-products. It was concluded that high molecular PEG would be suitable to assess the suppressive activity of tannins in tea by-products by in vitro fermentation. Higher responses to gas production and $NH_3$-N concentration from black tea by-product than green tea by-product due to PEG indicate that tannins in black tea by-product could suppress rumen fermentation more strongly than that in green tea by-product.