黑龙江省哈尔滨三院专家88面诊

明星资讯腾讯娱乐2019年08月21日 12:34:12
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They can dance and they can sing. But only one of the robots on display at this years Taiwan Robot Fair can express an opinion. Designed by electrical engineering professor Rain Xi Low. Hes called a low head, created the image of a young and very expressive Albert Einstein. The Einstein robot can emulate 7 different human emotions including joy,disgust,and astonishment.这些机器人能唱能跳。但本届台湾机器人览会上只有一种机器人阐述了机器人新的发展方向。这款机器人由电子工程方面的教授Rain Xi Low发明。这款机器人是半身像,模仿了年轻时的爱因斯坦。这款机器人可以模仿人类七种不同的表情,包括喜悦,厌恶,惊讶。Theres a camera system installed in the eyes, and in the robots face, therere installed 36 motors,and every single one of the motors can take 256 positions. Like this, the robot can create very many different facial expressions.在机器人的眼睛中装有摄像系统,而机器人的脸上装有36个马达,每一个马达可以形成256种形态。这样,机器人就可以做出许多种不同的面部表情了。Lows robot has beend esigned to look like Einstein at 27 years of age when he published his famous theory of Relativity. The professor and his students plan to give him a body and legs so he can walk, although Einstein himself seems to have mixed feelings about the idea.Low教授是根据27岁时的爱因斯坦设计的机器人,27岁的爱因斯坦正是发表相对论的年纪。Low教授和他的学生们计划给机器人安装上身体和腿,这样它就可以走路了。不知道爱因斯坦在天有灵会作何感想。Rob Muir,Reuters.Rob Muir报道,路透社消息。注:本篇文章英文来自普特论坛,译文属原创,,。201208/195311

  Research shows that whether a person is an optimist or a pessimist is related to their quality of life, including their physical health. The subjects involved first took personality tests in the 1960′s and then thirty years later they completed a follow-up self-assessment of their health status. Researchers found that not only did the optimists from the 1960′s report better physical and mental functioning thirty years later, but that optimists also lived longer on average than pessimists.研究表明,不管一个人是乐观还是悲观,都和他的生活质量息息相关,包括身体健康。这个主题首次在二十世纪六十年代提出并做了人格测试,三十年后他们后续完成了健康状况的自我评价。研究人员发现60年代的乐观主义者不仅身心比30年后的人更健康,而且乐观主义者比悲观主义者更长寿。It’s hardly clear that there is a causal relationship between optimism and health; it could be that they are related to the same underlying gene complex or set of mechanisms. Still, it sure is tempting to surmise that it’s partly a positive attitude that keeps people alive for so long. It may actually be possible that a lot of what my parents have been telling me for years is true. If you think positively, good things may happen to you. If you think negatively, then you may doom yourself.很难理清乐观与健康之间的因果关系,也许是因为它们与相同的潜在基因或是一套机制有关。不过,可以肯定的是,一定程度上的积极心态能让人长寿。实际上可能多年来我父母告诉我的许多事情都是真的。如果你积极地看待这个世界,好的事情就可能发生在你身上。如果你总是消极地看待一切,那样只会让你自己更郁闷。 /201303/229389

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  Yael: I just about an exciting technique. Researchers found a way to convert types A and B blood into type O blood—the type that can be transfused into any patient. This advance could help avoid blood shortages in the future.雅艾尔:我刚刚读了一条振奋人心的技术。研究人员找到了一种可以把A型、B型血转变为O型血的方法。而O型血可以输给任何病人。这项先进的技术能够避免出现缺血的情况。Don: Wow, that is exciting. But what makes type O blood so special?唐:哇,太振奋人心了。但为什么O型血这么特殊呢?Yael: Blood types result from different carbohydrates, called antigens, on the surface of human blood cells. Your blood ;type; denotes the kinds of antigens you have on the surface of your cells. People with type A blood have A antigens; those with type B have B antigens. If you have both kinds of antigens, youre type AB; if you have neither one, youre type O.雅艾尔:血型因不同的碳水化合物而产生,这种关键的碳水化合物就是抗原,它长在人体血细胞的表面。你的血型表示你的血细胞表面有哪种抗体。A血型的人有A抗体;B血型的人有B抗体。如果你有A和B两种抗体,那你就是AB血型的人;如果二者都没有,那你就是O型血了。Your immune system recognizes the antigens on your blood as ;self;, but attack cells with ;foreign; antigens. So if you ever need a blood transfusion, its important that you only receive blood compatible with your own type.免疫系统把血液中的这些抗体认作;自己人;,却会攻击那些带有;外来;抗体的细胞。因此,如果你需要输血时,你只能接受与自己血型相同的血,这很重要。Don: I see. So if a type A person receives type B or AB blood, her immune system will see the B-antigens as foreign, and attack the donor blood cells?唐:我明白了。所以如果A型血的人接受了B型血或者AB型血,她的免疫系统会视B抗体为外来者,于是就会攻击供体的血细胞。Yael: Exactly. But type O is called the ;universal donor; since it doesnt have any antigens that would set off the bodys defense system.雅艾尔:正是如此。O型血之所以被称为;万能血;,是因为它没有任何抗体,不会和身体的防卫系统相抵触。A team of Danish scientists has identified enzymes that remove the A and B antigens from blood cells. The enzymes, which were extracted from a bacteria and a fungus, essentially change any donated blood into type O.一个丹麦科学家小组已经找到了一种可以消除细胞中A、B抗体的酶。这种酶是从一种细菌和真菌中提取出来的, 可以把献血者的血型完全变成O型。Clinical trials are underway to test whether the treated blood is safe and effective. If so, the technology could help save lives, since type O blood is such a precious commodity.临床试验正在测试这种转化后的血是否安全有效。如果没什么问题,这项技术将挽救不少性命,因为O型血确实很紧缺。原文译文属!201303/230055The Bulls lost another game, and would have to go the full seven in a series for the first time in years. By the end of game six, doubters were saying that Michael was finally running on empty.公牛队又输了另一场比赛,就得在这一年内第一次在7场比赛中不能丢分。在第六场比赛的最后,持怀疑态度的人都说迈克尔好像形同梦游一般。Bulls trail by two. Here we go. MJ one-on-one with McKey. Michael a drive, tripped off his feet, and McKey stole the ball, and thats gonna do it. That will do it. Indianas gonna win it.公牛队落后两分。现在我们可以开始了。乔丹与米基正针锋相对,后者偷球得手。这就行了。印地安那州会赢的。He may have been devastated that night, and I assume he was, but he had the ability to believe that we were going to win. And he was going to do well. Probably one of the most remarkable shots that everybody remembers is the shot he made against Cleveland.那晚他可能已经被摧毁,我假定他已经如此,但他有能力力挽狂澜,他相信我们会赢。他要做得很好。可能每个人都记得他技惊四座的一次投篮是对克里夫兰的那场比赛。The in-bounds pass comes in to Jordan. Heres Michael at the foul line. A shot on Ehlo. Good! The Bulls win! They win it!乔丹掌控球权。现在迈克尔站在罚球线上。在Ehlo面前投中了球。太漂亮了!公牛队赢了!他们赢了!注:听力文本来源于51VOA201201/168819

  Why the Earth Is Round?地球为什么是圆的?Our never-thought to ask question for today is: Why is the earth round? Why not a cube? A cube? No, thats silly. Is it? Why?今天,我们“从未想过的问题”是:地球为什么是圆的?为什么不是方形的?方形?那太可笑了。是吗?为什么?Because..., because really big things like to be round for some reason. Exactly right.And that reason is gravity.因为……因为非常大的东西通常都是圆的。完全正确。这个原因就是重力。Think of it this way. Suppose the earth were a cube. Then some points on its surface would be farther away from the center than others. The corners, for example, would be much farther out than the rest.我们这样想,假设地球是一个立方体。而地球表面的某些端点离中间或其它端点比较远。比如,立方体的各个角离得很远。Since gravity works equally on everything, there would be a tendency to pull those uneven places down. The surface would even itself out. The only geometrical object in which every point on the surface is the same distance from the center is a sphere.由于重力对所有物质的作用是相等的,因此不均匀的地方会被向下拉。表面使其本身变得平均。唯一一个表面上的每个角到中心距离都相等的几何物体就是球体。But wait a minute, Ive seen pictures of asteroids that have all sorts of crazy shapes. Why arent they round? Only because they arent big enough for gravity to be a determining factor. If an asteroid were to suddenly become as big as a moon, it would indeed rearrange itself gradually into a sphere.等一下,我看过很多行星的图片,它们都是奇形怪状的。它们为什么不是圆的?那只是因为行星太小,重力不能成为其决定因素。如果行星突然变得和月亮一样大,它就会真正重新安排逐渐变成一个球体。 /201209/202018

  Business European gas Pipeline pressures商业 欧洲天然气 管道压力The battle over gas prices in Europe欧洲的天然气价格之战NO ONE likes getting a gas bill. But Europes biggest utilities are especially upset over the sums they must pay gas producers, in particular Russias state-backed giant, Gazprom.没人乐意收到天然气账单,而欧洲最大的天燃气公司对于向天然气供应商付的账单尤其感到沮丧,特别是俄国政府撑腰的巨头俄罗斯天燃气公司的账单。Some are trying to cut those costs; but with little in the way of leverage over producers their chances of success look slender.有些燃气公司想削减开,但是几乎没有任何制衡供应商的手段,所以成功的希望渺茫。Gas prices in continental Europe are mainly set by a decades-old system of long-term contracts, linked to the price of oil.欧洲的天然气定价是有几十年历史的长期合同方式,合同价格和石油挂钩。But in relatively liberalised Britain gas is largely traded at spot prices set by current supply and demand.但是在市场相对自由的英国,天然气以供需决定的市场价格进行交易。This handed an advantage to some smaller European utilities with interconnections to the British spot market when, in 2008, gas prices suddenly fell.在2008年天然气价格突然下跌时,在英国现货市场交易的小型欧洲天然气公司便拥有优势,而其规模更大的对手便受到损失。Their bigger rivals meanwhile suffered. They were saddled with ;take or pay; contracts that obliged them to buy fixed quantities of gas far above what they could sell and at prices way above those on the spot market.他们签署了一系列;照付不议;的合同,必须以大大高于现货市场的价格购买固定数量的天然气,而很大一部分根本就卖不出去。The gap between spot and contract prices has not gone away.现货市场价格和合同价格的差异仍然存在。German firms, which are especially hostage to Russian pipelines, are at a big disadvantage.德国公司受到俄国天燃气管道牵制尤为严重,所处地位非常不利。Yet both Russia and Norway, which supply almost half of Europes gas, have shown some flexibility towards their complaining customers.但是供应欧洲将近一半天然气的俄国和挪威对于满腹牢骚的客户显示了一定的灵活性。By the end of European gas buyers were begging for relief, with oil-indexed gas then 50% pricier than spot gas.年底,和油价挂钩的天然气价格比现货市场高出50%,欧洲天然气买家纷纷请求供应商网开一面。In response, Norways Statoil allowed an element of spot pricing (around 25% of oil-indexed contracts) for three years.挪威国家石油公司允许在未来三年内部分采用现货价格(约占油价挂钩合同的25%左右)。Gazprom responded with a less generous 15-20% allowance.俄罗斯天然气公司允许的比例更低一些,为15%至20%。Since then the Russian firm has been the staunchest defender of oil indexation (especially as the oil price has soared).自此以后,俄罗斯天然气公司一直力挺挂钩油价(特别是因为油价飙升)。And squeezed utilities are again trying to make it change its mind.被压迫的天燃气公司则再次尝试让它改变主意。Yet negotiations over new gas contracts have foundered.但是签署新天然气合约的谈判失败了。E.ON is taking Gazprom to arbitration.德国意昂集团将俄罗斯天然气公司上诉至仲裁机构。RWE, which favours a complete shift to spot prices, has apparently followed suit.赞成完全采用现货价格的德国莱茵集团也效仿这一做法。Frances GDF is also considering arbitration.法国天然气苏伊士集团也在考虑选择仲裁。But the process could take years and the Europeans may not win.但是这一过程可能耗费多年,欧洲公司不一定会成为赢家。Meanwhile Gazprom is doing what it can to cement oil indexation by increasing its grip on European power markets.同时俄罗斯天然气公司正通过各种手段加强对欧洲电力市场的掌控以巩固油价挂钩体系。At the beginning of October the Russian firm said it was interested in buying power companies in Britain, Germany and across Europe.10月初,俄罗斯天然气公司表示有意收购英国、德国和欧洲其他国家的电力公司。This would reinforce its ability to set gas prices on its terms.这将加强其按自己开出的条件定价的能力。Troubles at RWE, Germanys second-biggest electricity producer, have also played into Gazproms hand.德国第二大电力公司莱茵集团的重重问题也为俄罗斯天然气公司助了一臂之力。RWE is burdened by poor acquisitions, a new nuclear-fuel tax and Germanys decision to abandon nuclear power (which constitutes 20% of RWEs generating capacity) by 2022.失败的收购项目、新增的核能税和德国政府将于2022年彻底放弃核能的计划(核能约占莱茵集团发电量的20%),使莱茵集团背负沉重包袱。On October 6th it said it would continue negotiations begun in July with Gazprom over a possible joint venture to generate electricity from gas and coal.10月6日,该集团宣布将恢复与俄罗斯天然气公司于7月开始的谈判,讨论建立利用油气发电的合资企业。In return for going into business with the Russian gas giant, RWE would likely get cheaper gas, but still on the basis of oil indexation.作为和俄罗斯巨头合作的回报,莱茵集团可能会以较低价格获得天然气,但仍然会和油价挂钩。A deal between Gazprom and RWE could have big consequences for European energy policy.俄罗斯天然气公司和莱茵集团如果达成协议将会对欧洲能源政策造成巨大影响。To reduce reliance on Russia, plans are afoot to run a pipeline from Central Asia.为了减少对俄罗斯的依赖,欧洲正计划建设通往中亚的天然气管道,即纳布科管道。And the main consortium partner in the EUs preferred proposal, known as Nabucco, is RWE.建设这一项目的公司联盟中一个重要的成员就是莱茵集团。Yet doubts persist as to how this would be financed (particularly given RWEs parlous state) and indeed where the gas to fill such a large pipeline would be found.但是这一项目如何融资的问题一直没有解决(特别是考虑到莱茵集团比较靠不住),而且到哪里找到这么多的天然气填满这一巨大的管道也是未知数。Meanwhile, another proposed pipeline along Europes ;southern corridor;, called South Stream, which would run from Russia to Western Europe, subsidised by the Kremlin, looks set to go ahead—making Europe even more dependent on the Bear.另一方面,计划延欧洲;南部走廊;建成的、连接俄国和西欧的南溪天然气管道项目似乎毫无疑问会上马,这将使欧洲更加依赖俄罗斯。 /201212/217532

  

  Sometimes its easy to understand how an evolutionary change took place, but its more difficult to understand why.有时候去理解生物进化演变的过程很容易,想知道原因却很难。For example, consider the beautiful birds of paradise which live in the forests of New Guinea. The males of many bird-of-paradise species have evolved colorful plumage, used for dramatic courtship displays. How this plumage evolved is no mystery: The healthiest males usually have the most spectacular plumage, so females choose whichever male has the gaudiest feathers. With this criterion, its not surprising that male plumage would grow more and more elaborate over the generations.就拿居住在新几内亚森林中的极乐鸟作例子吧。极乐鸟种群中的雄性常常会利用它们绚丽多的羽毛上演一幕又一幕的求爱话剧。这羽毛是怎样进化来的并不神秘:最健壮的雄性往往拥有最绚丽的羽毛,所以雌性往往会选择有艳丽羽毛的雄性。在这种标准的要求下,雄性鸟儿拼命想长出比同类更抢眼,更精致的羽毛,这一点不足为奇。Understanding why the plumage evolved is a little trickier. After all, there are some bird-of-paradise species that are really quite drab. These birds devote most of their energy to finding food and raising their young, instead of wasting it on courtship. What makes these near neighbors so different?了解羽毛色泽为什么会进化就有点棘手了。毕竟,有几种极乐鸟的颜色十分单调。这些鸟把它们主要的精力都放在寻找食物和抚养后代上了,而不是用于求爱。是什么导致这些近邻如此不同?The answer is diet. Those species with the most elaborate plumage also have the most diverse and reliable diet: a variety of insects, and fruits rich in complex nutrients. With this healthy, reliable food supply, females can raise the hatchlings without help from the males. This frees the males for their extravagant courtship behavior, and the complex diet provides them with chemicals to make their brightly colored feathers.就是日常饮食。那些有着最美丽羽毛的鸟儿有各式各样并且稳定的食物:各种昆虫和富含多种营养的水果。有了这种健康的、可靠的食物供应,雌性极乐鸟可以完全不依靠雄性而独立抚养后代。这样就使得雄性有闲暇时间去发展求爱行为,而且多样饮食中的化学物质能让他们的羽毛更鲜亮。In contrast, the drabber birds have a limited diet of simple figs, which are available more sporadically. Theyre monogamous, and both parents need to spend most of their time foraging. This means less time for elaborate courtship behavior.与此相反,拥有单调毛色的鸟儿的食谱就相对简单,仅限于零星分布的无花果。同时它们实行一夫一妻制,父母双方都需要花费大量的时间寻找食物,这就大大缩短了用于考虑花哨的求爱方式的时间。So different diets lead to different behaviors, which results in the evolution of different plumage. These exotic birds show just how complex evolution can be! 所以,不同的食物产生不一样的生活方式,也是进化出不同毛色的原因。这些奇异的鸟儿向我们解释了进化有多么复杂!201206/185346

  

  

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