Railway applications. Rolling stock-Combined testing of alternating current motors, fed by an indirect convertor, and their control systemdoi:BS EN 61377-3:2002交叉引用:IEC 60050-411:1996IEC 60050-551:1998IEC 60050-811:1991IEC 60349-2:1993EN 60349-2:2001IEC/TR 60349-3:1995IEC 60571:1998IEC...
It is commonly accepted that the first well-known pale-yellowish sprouts of Witloof chicory were casually obtained by a Belgian farmer around the 1870s, who had observed and harvested the sprouts from a stock of roots piled up in autumn and left apart during the cold season, waiting to be ...
Sex-Specific Acquisition Risks The risk of HIV seroconversion per heterosexual act is estimated to be approximately twofold higher for the female compared to male partner [1], with multiple contributing factors. The unique characteristics of the female genital tract as compared with rectal and penile ...