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中国氢弹之父余敏，享年93岁。_我的网站

一 | 据《光明日报》1月16日官方微博报道，国防科技改革与发展的重要推动者、先锋余敏于1月16日在北京逝世，享年93岁。    LONDON -- The Guardian newspaper has fired longtime editorial cartoonist Steve Bell after refusing to run a caricature of Israeli Prime Minister Benjamin Netanyahu that critics said drew on antisemitic imagery.“The decision has been made not to renew Steve Bell’s contract,” the Guardian said.“Steve Bell’s cartoons have been an important part of the Guardian over the past 40 years — we thank him and wish him all the best,” publisher Guardian News and Media said in a statement sent to The Associated Press on Thursday.Bell has contributed to The Guardian since 1983. Several of his hundreds of cartoons over the years have been accused of including anti-Jewish stereotypes. The latest cartoon, posted by Bell on social media, shows Netanyahu holding a scalpel and preparing to cut a Gaza-shaped incision in his abdomen, with the caption “Residents of Gaza, get out now.” It is labeled “after David Levine” and recalls a Vietnam War-era cartoon depicting U.S. President Lyndon B. Johnson pointing at a Vietnam-shaped scar. American illustrator Levine drew inspiration from a photo of Johnson showing reporters his scar from gall-bladder surgery.Bell said he had been accused of evoking the “pound of flesh” demanded by the Jewish character Shylock in Shakespeare’s play “The Merchant of Venice.”He told industry newspaper the Press Gazette that “The Merchant of Venice” had “nothing to do with the cartoon.”“I don’t promote harmful antisemitic stereotypes. … Never have I done such a thing, I would not dream of doing such a thing,” the publication quoted him as saying.Britain has a long tradition of cartoons showing politicians in exaggerated and grotesque form. Bell has created some of the most indelible caricatures of recent British leaders, portraying former Prime Minister John Major wearing underpants over his trousers, Tony Blair with a demonic oversized eye and David Cameron with a condom over his head.。于敏1926年8月出生。1944年，于敏被北京大学机电工程系录取。1946年，由于对理论物理的热爱，于民转学到理学院物理系，并以理论物理为专业。1949年，俞敏石在张宗照任研究生兼助教。1951年以来，在中国科学院现代物理研究所任助理研究员、副研究员，在中国理论物理学家彭焕武的指导下开始了核理论的研究。

二 | 1960年底，俞敏开始研究核武器理论，突破氢弹原理，解决了热核武器物理中的一系列基础和关键理论问题。

三 | 1961年，俞敏彪被任命为第二航空部参加氢弹原理的研究。1964年10月，在邓家贤的领导下，中国第一颗原子弹成功爆炸，随后由于敏领导的研制小组于1967年研制出中国第一颗氢弹。

四 | 2015年1月9日，于敏获得2014年全国最高科技奖。在2018年召开的庆祝改革开放40周年大会上，党中央、国务院决定授予郁敏等100名同志改革先锋称号和改革先锋奖章。

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