The first is the establishment of the Aero Engine Corp. of China (AECC) last year, which consolidates Chinese aero-engine know-how and capabilities, indicating that the indigenous development of aircraft engines is now a strategic priority for China. This focus is even more striking when one realizes that China now has access to rhenium, a rare metal that helps create strong superalloys necessary for the manufacture of high-pressure jet engine turbine blades. Since the 2010 discovery in the Shaanxi province of reserves, which account for 7% of the world’s total, considerable effort has been made to exploit and process this metal. Moreover, a major technological milestone was recently achieved that opens the door for mass production of single-crystal turbine blades, a key component of modern jet engines. It is thus no surprise that one of the cornerstones of the newly established joint Sino-Russian widebody aircraft program is the development of a dedicated, state-of-the-art engine.
To help control the spread of COVID-19, the Centers for Disease Control and Prevention has recommended getting a COVID-19 test for people who show symptoms of the disease, have come into contact with someone known to have the disease, or are in vulnerable groups.
The most common form of testing for the novel coronavirus involves the use of a nasopharyngeal, or nasal, swab. The swab reaches deep into the back of a person’s nose and mouth to collect cells and fluids from the upper respiratory system, which can then be checked with diagnostic tests for the presence of the novel coronavirus known as SARS-CoV-2.
The testing procedure involves inserting a 6-inch-long swab into the cavity between the nose and mouth for 15 seconds and rotating it several times. The swabbing is repeated on the other side. The swab is then inserted into a container and sent to a lab for testing.
Dr. Shawn Nasseri, an ear, nose and throat surgeon based in Beverly Hills who has conducted many COVID-19 swab tests, told us in an email that the nasal swab “follows the floor of the nose and goes to where the nose meets the throat, or naso-pharynx.”
Asked if the swab test is safe, Nasseri said, “Absolutely. The biggest risk is discomfort. The rare person — 1 in thousands — passes out from being super sensitive or gets a mild nosebleed. It’s estimated that close to 40 million or more swabs have been performed safely in the U.S. alone.”
But in recent weeks, viral posts on Facebook falsely claim that the nasal swab test can cause serious health issues. One post says, “The stick deep into the nose causes damage to the hamato-encephalic barrier and damages endocrine glands. This test creates an entrance to the brain for every infection.”
Dr. Yvonne Maldonado, a professor of epidemiology at the Stanford University School of Medicine, told us in an email that the Facebook claim “is not true.”
艾玛·汤普森曾因影片《霍华德庄园》(Howards End)以及《理智与情感》(Sense and Sensibility)两次获得奥斯卡金像奖，而她把小金人放在洗手间这一做法也广为人知，她说：“放在其他地方都显得格格不入，它们太大了，又金光闪闪。”而艾玛并不是唯一一个这样做的人，苏珊·萨兰登（Susan Sarandon）、莱昂纳尔·里奇（Lionel Richie）以及肖恩·康纳利（Sean Connery）都称自己把小金人放在浴室等地方。
This year's lift was slower than the 6.5% rise in 2016, which is attributed to moderating economic growth and a rapidly aging society.
Nasseri said that “it is incredibly implausible, if not impossible, to cross the skull base and blood-brain barrier with a swab unless someone uses a rigid metal instrument and is pointing the metal object 90 degrees in the wrong direction.”
The diplomatic row began when Ankara’s foreign minister was denied entry to the Netherlands on Saturday for a campaign rally in favour of Mr Erdogan’s constitutional reforms. Armed Dutch police also intercepted another Turkish minister, Fatma Betul Sayan Kaya, on her way to the rally in Rotterdam and escorted her back to the German border.
"He promised when he took office that he would have a Cabinet that was 50 percent women, and then he did it," Maddow said. "Would you make that same pledge?"
Centers for Disease Control and Prevention. 2018房地产迎来“长效机制”关键年 Accessed Aug 3 2020.
Brueck, Hilary and Samantha Lee. “施密特在接受采访时问道，“为什么我们接连看到如此多的创纪录温暖年度？这是因为地球正在变暖。根本的问题是，这是一种长期趋势，这种趋势不会消失。” Business Insider. 15 Apr 2020.
Dr. Shawn Nasseri. Ear, nose and throat surgeon. Email exchange with FactCheck.org. 3 Aug 2020.
Dr. Yvonne Maldonado. Professor of epidemiology, Stanford University School of Medicine. Email exchange with FactCheck.org. 3 Aug 2020.
Fauzia, Miriam. “联想首席执行官杨元庆 USA Today. 9 July 2020.
Marty, Francisco M., et al. 苏州市建筑材料再生资源利用中心项目完成立项 New England Journal of Medicine. 28 May 2020.
Swenson, Ali. 确实有人有近乎完美的记性，可以从过去经历中检索出大量信息。只是，即使很多人认为这样的记忆已经很完美，他们有的时候也不能准确清晰地记起一些特定的细节。虽然真正完美的记忆并不存在，但你还是可以拥有近乎完美的记忆力，超越这些记忆达人，去抵抗岁月给你带来的疾病和健忘。 Associated Press. 7 Jul 2020.
UCDavis Health. 缴存基数和比例调整 公积金还款注意别逾期 Accessed 3 Aug 2020.
University of Queensland, Australia. 解析：卫浴行业爆发价格战的两大“元凶” Accessed Aug 3 2020.
U.S. National Library of Medicine, National Institutes of Health. “The Blood-Brain Barrier.” Accessed Aug. 4, 2020.