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2019年10月24日 04:38:07    日报  参与评论()人

福州无痛人流最好三甲医院宁德检查染色体医院Don, you sure are lucky dont have to give birth.唐,你很幸运不用生孩子。Im glad were an intelligent species, but boy, that infant head feelsmighty large going through that narrow birth canal.我很高兴人类有着聪明才智,但是天啊,婴儿的脑袋要从狭窄的产道出来,那是很痛苦的。And then,after all that, the baby comes out facing down and backwards,which means youre helpless to assist it, or even to untangle itfrom the umbilical cord.而且,经历过这一切后,宝宝出来是面向下和倒过来的,你根本没办法协助它,或者甚至不能帮忙解开脐带。Well, Yeal. According to evolutionary anthropologists, babies of the earliest humans had afifty-fifty chance of coming out facing backwards.是的,雅埃尔。根据人类进化学家,人类早期时候的婴儿生出来是有二分之一的可能性是面向后面的。This was a result of humans learning to walk on two feet.这是人类学习用两只脚走路的结果。As the pelvis became optimized for walking, the birth canal developed twists and turns that meant the baby had to rotate in order to keep its head and shoulders aligned with the widestpart at all times.随着盆骨越来越适应走路,产道就变得迂回曲折,婴儿就得旋转过来保持它的头和肩膀总是与最宽的部分在同一平面上。And then our brains also got bigger.然后头也会变得更大。Which meant more twists and turns.也意味着更多的扭转。And backwards-facing babies, stupid,huh?倒着出生的婴儿,很可笑吧。Well,you know,Yeal.Some of the earliest humans learned to compensate for the difficulty of giving birth by receiving assistance during childbirth, which made a huge difference in terms of survival.你知道吗?最早时期的人类学会弥补分娩的困难,他们通过在分娩是接受援助,这在生存方面起了非常重要的作用。So there might be an evolutionary advantage to having someone help you give birth.因此,也许有一种进化优势能请人帮助你生育。Some anthropologists certainly think so and conjecture that human females who gave birthto backwards-facing babies, and females who had assistance because they felt particularly anxiousabout the birth, ended up doing better than females who didnt.一些人类学家当然也这么想过,并且他们推测那些女性生下面向后面的婴儿,和在生育时得到帮助的女性比没有援助的生育女性生产更顺利。After all, if problems arise duringlabor, having another person around can make the difference between life and death.毕竟,在分娩时有问题出现,有人在身边是能够于生死之间起到很大作用。 201408/322593龙岩第三医院做试管选性别多少钱 Science and technology科学技术How dung beetles navigate蜣螂如何导航Stars in their eyes眼里有星辰An insect that steers by the Milky Way观天识途的昆虫THE number of animals that navigate by the stars is small.靠观察星辰行走的动物不多。Only some birds, a few seals and, of course, humans have the ability.仅仅有某些鸟类、海豹,当然人也有这个本事。It had been assumed that other creatures that might do this would need reasonably well-developed brains.过去人们设想其他具备这种能力的生物很可能拥有发达的大脑。That notion has now been proved wrong as the celestial-navigation club welcomes its latest member: the humble dung beetle.现在这种见解被推翻了,因为天文导航俱乐部迎来了自己最新的成员—不起眼的蜣螂。Life in the world of dung beetles is fiercely competitive.蜣螂在这个世界上过着你争我夺的生活。After rolling up a ball of highly nutritious dung, the beetle must race off with it or risk having the ball stolen by other beetles.蜣螂必须把自己团好的极富营养的粪球搬走,否则劳动成果会被其他的蜣螂偷走。Strength is important, but so too is the route taken.力量很重要,运输路线也不能轻视。The ideal tactic on the open plains where many dung beetles live is to move in a straight line.很多生活在广阔平原上的蜣螂采用走直路的理想策略。This is easy enough during the day, but at night—when the beetles are most active—it is more challenging.这在白天不难办到,然而晚上才是蜣螂最活跃的时间,此时走直路对它们来说就是挑战了。Previous work has shown that dung beetles can make use of the moon to help them navigate, yet some still set a straight course on moonless nights.以前人们发现蜣螂利用月亮导航,如果晚上没有月亮,也有蜣螂走直路。To find out how, a team working in South Africa led by Eric Warrant and Marie Dacke, of Lund University in Sweden, designed an intriguing experiment.为了找到蜣螂夜里能走直路的原因,Eric Warrant和Marie Dacke领导的瑞典隆德大学工作团在南非设计了一个有意思的试验。They made caps for 19 dung beetles.他们给19只蜣螂做了帽子。Ten wore caps made of cardboard to prevent them seeing the sky and, as a control, nine wore caps made of transparent plastic.10只蜣螂戴着薄纸板做的帽子,这样他们就看不到天空了。作为对比,其他9只蜣螂戴上了透明塑料制成的帽子。The beetles and their dung balls were then released in the centre of a circular arena made of flattened sand and enclosed by a featureless circular wall.这些蜣螂和它们的粪球都被放在了一个平铺着沙子圆形场地的中央,场地的围墙也没有什么特别之处。As the beetles rolled away under a moonless night sky they were filmed by infra-red cameras.在没有月亮的晚上,红外线摄影机记录蜣螂搬运粪球的活动。The team found that the beetles prevented from seeing the sky by their caps had path lengths that averaged 476.7cm, much longer than the average of 143.4cm travelled by the beetles wearing clear hats.试验人员发现被帽子遮挡了天空的蜣螂平均行走476.7cm,远远超出戴着透明帽子的蜣螂的平均路程143.4cm。As the beetles might have used other overhead landmarks, like trees,因为蜣螂可能使用位于高处的其他地标。a second arena was built with a high black wall and a small, dry moat around it.第二个场地是黑色高墙围起来的,This time the beetles—minus their hats—were timed to see how long it took them to roll their balls from the centre to the point where they could be heard falling into the moat.附近有一条干涸的壕沟—这次蜣螂没有戴帽子—实验人员要看看他们从场地中央滚粪球到跌入壕沟能用时多久。Under a full moon the beetles took an average of 21.4 seconds to reach the moat.满月之夜蜣螂抵达壕沟平均耗时21.4秒。On a moonless, starry night, their speed was somewhat reduced, but not significantly so.在繁星满天的无月之夜,它们的速度有所下降,但降得不多。However, under overcast conditions, when neither moonlight nor the stars were visible, the beetles took an average of 117.4 seconds.如果晚上阴天,看不到星星和月亮,蜣螂抵达目的地要平均耗时117.4秒。Curious as to what it was in the sky that the beetles were using to navigate, the team moved their arena inside the Johannesburg planetarium and reran their experiments.因为试验人员急于了解蜣螂到底利用天上的什么物体导航,他们到约翰内斯堡天文馆做室内实验。As they report in Current Biology, the beetles presented with a full starlit sky, including the Milky Way or just the Milky Way, took statistically the same amount of time to exit the arena.他们在《当代生物学》杂志上统计了蜣螂在繁星满天的夜空下走出场地用的时间在统计学上是相同的,Under a sky full of dim stars they were only a little slower.天上的星光不亮,它们要稍微慢一点。This, speculates Dr Warrant, is because they were still able to spot the cluster that forms the Milky Way.通过试验Warrant,士推测,这是因为蜣螂还能认出系形成的星团。When allowed to see only the 18 brightest stars or immersed in total darkness, the beetles took more than twice as long to exit the arena.如果暗夜里只有18颗最亮的星星,蜣螂离开场地的时间要高出两倍以上。The team now wonders how many other animals might be able to use the glowing strip of light created by the Milky Way to guide them.这个团队的工作人员现在想知道到底有多少动物可以利用系形成的发光带活动。 /201310/261132福州腹腔镜手术哪个医院好

福州妇幼保健院检查宫腔镜福州做输卵管疏通去那好 Dear Annie: 亲爱的Annie: Ive been dating ;Josh; for just over a month. 我和Josh已经约会一个多月了。We were instant friends and started off our romance slowly. 我们一下子就成了朋友,慢慢地就开始暧昧。He lives two hours away and sees me on weekends. 他住的地方离我这儿大概要两个小时,而他每周都会来看我。This past weekend, Josh told me he is falling in love and wants me to move in with him. 就在上周,Josh告诉我,他爱上我了,想让我搬去和他住。Heres the problem. 问题就出在这儿了。Last night, he said that although he loves me, he is so accustomed to being single that he isnt sure hell be able to refuse if a woman tempts him. 昨晚,他说尽管他已经爱上我了,但他已经习惯了一个人,所以并不能确定如果有人来诱惑他,他能不能抵挡的住。I was devastated. 我崩溃了。I told him everyone has to fight temptation, but he has to think Im worth it. 我告诉他每个人都必须抵制诱惑,但他要相信我是值得让他这么做的人。I dont want to stay with a man who says he loves me, but could be with someone else whenever he gets the urge. 我不想和一个整天说爱我却抵制不住别人诱惑的人在一起。Should I walk away before I am so far in that I cant leave? 在还没到不能离开他的时候我是不是应该选择离开?Im hurt, mad and surprised all at the same time. - Not Whimsical in Alabama 我既痛苦又疯狂又意外。我不是在异想天开啊。Dear Alabama: 亲爱的Alabama: Josh is telling you in advance that hes going to cheat and he thinks hes giving you a plausible excuse to accept it. Josh是在提前告诉你,他会欺骗你,而且他还为那个谎言做出了个合理的解释。Tell him its been fun, but you need a more stable, committed relationship than what he is offering. 告诉他你们在一起的时光很有趣,但你需要的是一个更稳定更充实的恋爱关系,而非他现在所提供的的这些。And, by the way, moving in after a month of dating is not ;taking it slowly.; 对了顺便说一下,在一个月的约会之后就搬到一起绝不是“慢慢来”。Its racing at light speed.这是在以光速发展。201308/250708福州检查染色体三甲医院

福州哪里有检查阳痿Business商业报道Paying chief executives高管薪酬Fortune favours the boss好运垂青老板Big, controversial golden goodbyes to bosses are probably here to stay老板们巨额而有争议的黄金告别可能会被留下来IS THE new boss of Time Warner Cable about to become one of the luckiest-ever winners of the great chief-executive pay lottery?时代华纳有线电视公司的新老板会成为伟大的首席执行官中最幸运的赢家之一吗?Robert Marcus is set to take over as boss on January 1st.罗伯特·马库斯将于1月1日接任老板。If rumours are to be believed, that will be just in time for the cable firm to be bought by one of a host of rivals that are now circling it.如果传言是可信的,那恰好有线电视公司被环绕的竞争对手中的一位收购。A change-of-control clause in his contract means he could go straight back out of the door with a golden goodbye of over m.合同中的变更条款意味着他可以拥有超过5,600万元的黄金告别走出大门。The biggest loser, in contrast, may be Philippe Varin, who will step down as boss of PSA Peugeot Citron, a struggling French carmaker.相反,最大的输家可能是菲利普·瓦兰,他从一个苦苦挣扎的法国汽车制造商PSA标致雪铁龙老板的位置上下来。On November 27th, he issued a statement saying he would give up a pension provision valued at 21m.11月27日,他发表声明说,他将放弃价值2100万的养老金保障。The board will decide his future pension arrangements before he retires, probably with an eye on public opinion.董事会将在他退休前安排他未来的养老金,可能会顾及舆论的反应。He follows in the footsteps of Fred Goodwin, who presided over the collapse of Royal Bank of Scotland.他步了弗雷德·古德温的后尘,其导致了苏格兰皇家的崩溃。In , again after a public outcry, the man known as Fred the Shred, because of his fondness for firing people, agreed to reduce his pension by 212,500 a year to a paltry 342,500.在年舆论再次哗然,那个喜欢裁人的被称为弗雷德的同意将他的退休金的减少额从212500英镑一年增加到区区342500英镑。It is rare for public disapproval of generous golden goodbyes to have so much impact.公众很少认为这些慷慨的黄金告别有这么大的影响。Even the introduction of say on pay votes in countries such as America and Britain seems only to have curbed the most egregious excesses.甚至在一些引进了薪酬话语权投票的国家如美国和英国似乎只能抑制最令人震惊的过激行为。Ira Kay of Pay Governance, a consultant, says that in America, most company boards facing such votes have managed to win them by dropping overgenerous perks like the automatic vesting of the bosss share options even when he has kept his job following a takeover.薪酬管理顾问艾拉凯指出,在美国,面临着这样投票的公司的董事会已经设法通过清理过于慷慨的激励措施,如老板股票期权的自动归属权,甚至在被收购后还继续他的工作。The once-widesp practice of paying a bosss taxes on his post-takeover payout, a nice little earner known as the excise tax gross-up, has also ended, costing some chief executives millions of dollars, says Mr Kay.凯先生说,在老板的税收上过往的做法是在他退休后出,一个很好的被称为包税的赚钱者也结束了,花掉了首席执行官们数百万美金。Bosses can no longer trigger big severance payouts by self-termination—quitting or retiring—adds Doug Friske of Towers Watson, another pay consultant.另一家薪酬顾问公司韬睿惠悦的道格Friske说,老板们以后不能靠通过自行终止-辞职或退休增加巨额的退休金。Topping up the pension fund for a boss who leaves earlier than expected is now frowned on too.为提前退休的老板补足养老基金现在也行不通了。Say on pay has also forced boards to get better at costing perks that once were wrongly regarded as practically free.薪酬话语权也迫使董事会在之前被认为是随意额外津贴上做的更好。Yet the golden parachute is a chronic problem that I dont see changing anytime soon, says Donald Hambrick, a management professor at Pennsylvania State University.然而,金降落伞是一个老大难问题,我没看到最近会有什么变化,宾夕法尼亚州立大学管理学教授唐纳德·汉姆布瑞克说。The procession of bosses exiting with fabulous pay-offs continues.老板们难以置信的离职金仍在继续进行。Pay consultants brought in by firms seeking a new boss often get blamed for regarding the most generous existing package in the market as the baseline for negotiations.薪酬顾问为企业寻求新的老板常常会因为以市场最多的离职金为基准进行谈判而被责怪。But there is also a small cottage industry of elite lawyers who are used by any candidate to be boss, and who have mastered every trick in the book, Mr Hambrick says.汉姆布瑞克先生说,也有一些曾是老板候选人的小企业中的精英律师,他们懂得书中的所有技巧。By the time the public is frothing at the mouth about some fired corporate failure walking off with a fortune, it is usually too late to do anything about it.这时公众议论的是解雇失败损失的钱,而这通常是来不及做任何事情补救。Everything is negotiated up front; that is the time to be outraged, he advises.他建议一切都协商都进行在前面,这是被激怒的时候。Once a boss has failed and pulled the cord on his golden parachute, boards typically conclude that it is best just to pay up quietly.一旦老板已经失败并且拉着他的黄金降落伞的绳子,董事会一般认为最好是默默的把钱付了。Even though recent legal changes have made it easier, even in America, to claw back some of the money paid to failed bosses, in practice firms will only try to do that if there is cast-iron evidence of fault, such as a financial misstatement.即使在美国,尽管最近的法律变化使得更容易夺回部分付给失败老板的钱,在实践中如果据确凿公司将尝试这样做,如财务失实。None of this should come as a surprise to anyone familiar with the myopic ways boards tend to work in practice.董事会在实践中的目光短浅对所有的人来说这一切都不应该是一件惊讶的事。The moment when a company is paying off a failure is also the moment it is trying to attract the best possible candidate to sort out the mess.当一个公司为失败付钱的那一刻也是它正试图吸引尽可能最好的人选来收拾烂摊子。Contesting the last bosss deal could easily scare off the ideal new one.争辩最后老板的这笔交易很容易吓跑新的理想人选。The CEO wheel of fortune keeps on turning.CEO的命运之轮仍在不断向前。 /201312/270624 DON:Time once again for What You Didnt Know.唐:又到了《你并不清楚的事情》节目环节。This is where we a well-known science fact and then surprise you with the follow-up. Ready?我们这里有一条非常著名的科学事实而稍后的节目可能会让你大吃一惊。准备好了吗?YAEL:Yep.雅艾尔:没错。DON:Heart disease is a leading cause of death.唐:心脏病是造成人们死亡的主要原因。YAEL:Hey, it turns out the sky is blue.雅艾尔:嘿,原来你刚知道天空是蓝色的。Everybody knows heart disease is bad news for all those overweight guys in suits.对于那些穿西装的超重人群来说每个人都知道心脏病是晴天霹雳般的消息。DON:. . . for women.唐:这是对于女性而言。YAEL:Whoops! Did you say heart disease is a leading cause of death for women?雅艾尔:哎呦!你说心脏病是导致女性死亡的主要原因?DON:More than that:its not only a leading cause of death, its the leading cause of death.唐:不只如此,不只是死亡的主要原因,而就是死亡的主要原因。Women over fifty are more likely to die of heart attacks than anything else.50岁以上的女性更有可能死于心脏病发作。YAEL:But I thought heart attacks were a guy thing.雅艾尔:但我认为心脏病是男人的事情。DON:You and almost everyone else.唐:你和几乎其他所有人一样。A recent American Heart Association poll asked what the leading cause of death in women over fifty was.美国心脏协会最近的一项民意调查问及50岁以上妇女死亡的主要原因。Guess how many American women got the answer correct?猜一猜有多少美国妇女的回答正确?YAEL:Not a lot?雅艾尔:不是很多?DON:Only eight percent.唐:只有8%。Even more alarming, a Gallup poll asked doctors the same question. Only fifty-five percent knew it.更令人担忧的是盖洛普民意测验问及医生的也是同样的问题。只有55%的人知晓。Thats almost one out of two getting it wrong!几乎是一半人都会犯的错误!YAEL:So heart attacks arent a guy thing?雅艾尔:所以心脏病不是男人的事情?DON:Heart disease happens to women just as much as to men--maybe even more.唐:女性的心脏病发病与男性一样,甚至更多。The number of men dying of heart attacks is dropping, studies show, while the number of women dying of them is on the rise.死于心脏病的男性正在数量下降,但研究显示死于此种疾病女性的数量正在上升。Some researchers speculate that it has to do with just this lack of understanding that heart disease isnt just a male problem.一些研究人员推测这与缺乏心脏病不只是男性的问题的理解有关。Men may be getting better prevention and better treatment, while womens warning signs are being missed. 男性可能会得到更好的预防及更好的治疗,然而对于女性而言可能错过警告迹象。 201311/266010福州那家医院治疗阳痿好福州检查女性不孕去哪好

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