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襄阳市妇幼保健院妇科怎么样120大夫襄阳第一人民医院哪年成立

2020年01月24日 01:02:20    日报  参与评论()人

襄州区人民医院是私人的吗襄阳樊城区妇幼保健院中医院好襄州区妇幼保健院中医院妇科挂号 SYDNEY (Reuters) - Scientists say they have discovered a black hole so big that it challenges the theory about how they grow.悉尼(路透社)——科学家们说,他们发现了一个非常巨大的黑洞,以至于挑战了旧的增长理论。But with measurements indicating it is 12 billion times the size of the Sun, the black hole challenges a widely accepted hypothesis of growth rates.但是,测量数据表明,它的体积相当于120亿个太阳,这个黑洞挑战了已被接受的黑洞增长假说。;Based on previous research, this is the largest black hole found for that period of time,; Dr Fuyan Bian, Research School of Astronomy and Astrophysics, Australian National University (ANU), told Reuters on Wednesday.澳大利亚国家大学天文学与天体物理学研究员边富阳士说,;基于先前的研究,这是在那个时间点发现的最大的黑洞,;;Current theory is for a limit to how fast a black hole can grow, but this black hole is too large for that theory.;;依据当前的理论,黑洞的增长速度是有极限的,但是,这个黑洞太大了,以致超越了这个极限。;The creation of supermassive black holes remains an open topic of research. However, many scientists have long believed the growth rate of black holes was limited.这个特大黑洞的发现在科研界得到持续的关注。然而,很多科学家依然相信黑洞增长速度存在极限。Black holes grow, scientific theory suggests, as they absorb mass. However, as mass is absorbed, it will be heated creating radiation pressure, which pushes the mass away from the black hole.黑洞会增长,科学理论认为,是来自于他吸引物质的能力。然而,物质被吸收,会导致高温,产生辐射压强,反而导致物质远离黑洞。;Basically, you have two forces balanced together which sets up a limit for growth, which is much smaller than what we found,; said Bian.;基本上,由于引力斥力最终平衡,从而使体积增长存在上限,这个上限比我们发现的这个黑洞要小得多。;The black hole was discovered a team of global scientists led by Xue-Bing Wu at Peking University, China, as part of the Sloan Digital Sky Survey, which provided imagery data of 35 percent of the northern hemisphere sky.这个黑洞是被北京大学吴学兵所领导的国际科研团队发现的,这个团队是史隆数位巡天计划的一部分,这个计划提供了整个北星空35%的影像数据。The ANU is leading a comparable project, known as SkyMapper, to carry out observations of the Southern Hemisphere sky.澳大利亚国立大学也在主导一个类似的工程,叫做SkyMapper,制作整个南星空的影像数据。Bian expects more black holes to be observed as the project advances.边士希望在这个工程中会发现更多黑洞。 /201502/360919襄樊哪家医院割包皮收费

襄阳襄州人民医院怎么样襄樊第一人民医院体检收费标准 襄阳市人民医院內

襄阳南漳县人民医院做无痛人流要多少钱Twitter is reportedly planning to abandon its famous 140-character limit and allow tweets up to 10,000 characters long.据报道,推特计划废除推文140字符的限制,允许字符数最多可达1万。The proposed 71-times increase in the limit, allowing tweets of roughly 2,000 words in length, would be the latest departure from the origins of Twitter since the social network#39;s co-founder Jack Dorsey returned as chief executive last year.扩充后的字符数是原来的71倍,这项提议如获实施,则意味着每条推文将最多可以有2000个单词。此举也将成为自联合创始人杰克·多西去年回归CEO职位以来,该社交媒体背离初创原则的最新举措。While Twitter is beloved by dedicated users in the media and public eye, it has failed to grow significantly in the last year while its major rivals Facebook and Instagram have stretched ahead.尽管有不少来自媒体和公众的死忠粉,不过推特去年的业绩并没有显著增长。而其主要竞争对手脸书和INS都领先于它。According to technology website Re/Code, Twitter plans to introduce the change towards the end of the first quarter of the year. Twitter has not confirmed this.据科技网站Re/Code报道,推特计划于今年第一季度末推出这项改革。推特尚未对该消息进行确认。The company has previously been reported to be raising the tweet limit above 140-characters, which was chosen when the service launched in 2006 to allow tweets and usernames to be received in a single text message, which had a 160-character limit.此前已有报道称推特将提升推文字符数至140字符以上。140字符的限制是该公司于2006年创立时提出的。当时之所以要这么做,是为了方便用户在短信中接收推文——每条短信有160字符数的限制。Users now experience Twitter via smartphone apps, rather than text messages, but the limit has been a defining hallmark of the service, allowing multiple tweets to be within a timeline. Extending the character limit is unlikely to mean enormous tweets appearing in feeds, however, with messages likely to be condensed to 140 characters and a ; more; option.现在用户主要通过智能手机应用收发推文,不再是以手机短信的方式。但140字符的限制已经成为推特的标志性功能,用户可以因此在同一时间线浏览多条推文内容。不过,增加字符数后,并不意味着用户看到的都将是超长推文:推文仍将被缩减至140字进行显示,用户可以通过点击“更多内容”按钮,进一步阅读详情。Still, reports of the move generated a mixed reaction to say the least.不过,用户对这项改革的看法褒贬不一,或者说,贬大于褒。If Twitter moves to 10,000 characters, email must move to 140 characters. It#39;s only fair. -- M.G. Siegler如果推特改成1万字符,那电邮就得改成140字符。这样才公平嘛。-- M·G·西格勒Even with 10,000 characters I wouldn#39;t be able to articulate all the ways Twitter has pissed off its users in the last twelve months. -- Neil S W Murray就算给我1万字符,我也罄竹难书推特过去12个月虐待它用户的各项罪行。-- 尼尔·S·W·穆雷The only time I want to use 10,000 characters on Twitter is to say no to this 5,000 times. -- Caity Kauffman我唯一能用到1万字符的地方,就是对这项改革说5000个“NO”。-- 凯迪·考夫曼 /201601/420262 A Chinese biotechnological company announced on Sunday it has developed the world#39;s first 3D blood vessel bio-printer, which makes it possible to produce personalized functional organs.本周日,中国的一家生物技术公司宣布,它已经研发出了世界上第一台3D血管生物打印机,这使得制造个体功能器官成为可能。Sichuan Revotek Co., Ltd. based in Chengdu, capital of southwest China#39;s Sichuan Province, said the significant breakthrough has been achieved through its self-developed stem cell bio-ink technology, 3D bio-printer and cloud computing platform.位于中国西南部四川省省会成都的四川Revotek公司称,通过公司自己研发的干细胞生物连接技术、3D生物打印机和云计算平台,3D血管生物打印机这一具有划时代的意义的技术突破已经完成。;The creative breakthrough in the 3D blood vessel bio-printing means we have mastered the stem cell-based 3D bio-printing technology,; said Yang Keng, chairman of Sichuan Languang Development Co., Ltd. Revotek is a subsidiary of Sichuan Languang.四川蓝光发展公司主席杨铿说,“这一具有创新性的3D血管印刷机的发明,意味着我们已经掌握了干细胞为基础的3D生物打印技术”。Revotek是四川蓝光集团的子公司。Blood vessels that transport nutrients to organs are indispensable elements when creating any organs, according to James Kang, an expert who led the program.据领导该项目的专家James Kang说,当创造任何器官的时候,向各器官运送营养物质的血管是必不可少的。Kang#39;s team has created a novel type of bio-ink - ;Biosynsphere;, whose primary goal is the personalized stem cell bio-printing to pave the way for organ regeneration.康的研发团队已经创造了一个新的生物链接模式- Biosynsphere,这一链接模式的首要目标是个体干细胞生物打印,以便器官再生。;We have successfully realized the blood vessel regeneration by relying on the 3D bio-printer, the biosynsphere technology and the data model based on cloud computing,; he said.他说,“我们已经成功地通过依赖3D打印机,biosynsphere技术和云计算基础上的数据模型实现了血管再生。”The company said it is willing to absorb more talent and seek international cooperation for the application of the achievements.公司很愿意吸收更多的人才并且寻求国际公司来应用这一成就。 /201510/406580襄阳保康县人民中心医院在线咨询医生襄阳天和医院阴道

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