Fedex proud partner of visionaries, save 10% on ground shipping at Fedex over the UPS store, we understand you need a partner who can help you save money. 联邦快递，你的最佳商业合作伙伴。联邦快递比UPS节约成本10%。我们了解，...
Books arts 文艺版块 Colour in art 艺术中的颜色 Paint it black 把它涂成黑色 The colour black has long been the ultimate test of an artists ingenuity 黑色一直是对艺术家创造力的终极考验 Claude Monet died in darkest Decem...
Harold Evans, editor and publisher, died on September 23rd, aged 92 编辑、出版人哈罗德埃文斯于9月23日逝世，享年92岁。 On that day in 1981 when he first sat at the pinnacle of British journalism, the editor's desk at the Times, a...
Bristling to work 竖着工作 In tests with a number of unnamed battery companies, Dr Boulanger says VACNT electrodes achieved an energy density of 500wh/kg in one battery and up to 1,400 watt-hours per litre in another. This is roughly double what...
According to a paper its inventors published recently in Nature Communications, the Graz cell's performance exceeds that of a Li-ion battery. It is able, for example, to cope with up to 1m charge and discharge cycles, says Qamar Abbas, a member of th...
Questions in such tests may ask a candidate to describe their behaviour in hypothetical situations: dealing with an angry customer, for example. The suggested answers may all be plausible (apologise profusely, fetch a manager and so on), so there is...
Business 商业版块 Bartleby 巴托比专栏 Questionable behaviour 别有用心的行为 Companies are relying more and more on psychometric tests 公司们越来越依赖心理计量测验 Here is a test. Assign a score of 1 to 5, where 1 is stro...
Capacitors, by contrastwhether basic or superconsist of a pair of electrically conductive plates placed either side of a separator material. When a voltage is applied to these plates, a positive charge builds up on the surface of one and a correspond...
Superbatteries 超级电池 What do you get when you cross a hare with a tortoise? 乌龟和兔子交配产下的种 Mixing supercapacitors and batteries may give electric cars what they need to overcome customer resistance. 将超级电容器和电池...
None of the attackers in Dresden, Paris, Nice or Vienna is thought to have reached Iraq or Syria. Though the Dresden suspect had been convicted of recruiting on behalf of IS and downloading terrorist manuals, he is believed to have been radicalised o...
