一。新闻简报

1。乌克兰总统弗拉基米尔·泽连斯基周五呼吁俄罗斯总统弗拉基米尔·普京直接与他对话。俄罗斯正在继续蹂躏乌克兰,已进入战争的第四周。

2。俄罗斯周六表示,它使用高超音速“金扎尔”导弹袭击了位于伊万诺-弗兰科夫斯克西部地区的乌克兰军火库。

3。世界卫生组织(WHO)负责人周四表示,进入乌克兰被围困的马里乌波尔市和其他陷入困境的地区现在“至关重要”。

4。新加坡/北京(路透社)——投资者表示,未来几个月中国对俄罗斯在乌克兰战争中的立场将重塑全球资金和贸易流动,可能导致新经济领域的出现。

5。(路透社) – 百时美施贵宝(Bristol Myers)公司周五表示,美国监管机构批准了一种新型癌症免疫疗法中的第一种药物,作为晚期黑色素瘤的初始治疗,这是最致命的皮肤癌形式。该公司表示,预计该疗法最终将获得超过 40 亿美元的年销售额。

6。芝加哥(路透社)——CF Industries Holdings 首席执行官托尼·威尔(Tony Will)表示,CF Industries Holdings 正在增加从位于路易斯安那州的世界上最大的氮复合体向美国两个海岸的化肥出口,以帮助抵消俄罗斯入侵乌克兰后出口下降的影响。

7。北京(路透社)——中国军方周六表示,美国驱逐舰拉尔夫·约翰逊(Ralph Johnson)3月17日驶过台湾海峡是美国的“挑衅”行为,向台独势力发出了错误信号。

8。路透北京3月18日 – 据中国官方媒体报道,中国国家主席习近平周五对美国总统拜登表示,乌克兰战争必须尽快结束。习近平在视频通话中对拜登说:“当务之急是继续对话谈判,避免平民伤亡,防止人道主义危机,尽快停战和结束战争。”

9。一家澳大利亚公司发明了一种全新的电解槽,以扩大氢燃料的使用范围,他们称这代表了 200 年来该技术的第一次真正革命。

10。路透北京3月20日 – 一名中国政府高级官员周六表示,西方国家就乌克兰问题对俄罗斯实施的制裁越来越“令人发指”。外交部副部长乐玉成也承认莫斯科对北约的看法,称北约不应进一步东扩,将俄罗斯这样的核大国“逼入绝境”。

11。威斯康星州是最新报告发现 H5N1(禽流感的学名)的州。 该菌株是在商业鸡群中发现的。一种高度传染性的禽流感病毒正在美国蔓延,迄今为止已在 15 个州被发现。

12。马里乌波尔的一名乌克兰警察正在恳求拜登总统为他的国家提供现代防空系统,因为他警告说这座城市已经“从地球上消失了”。

13。据报道,由于俄罗斯总统弗拉基米尔·普京(Vladimir Putin)在乌克兰的战争引发的短缺担忧,俄罗斯官员敦促人们不要恐慌性购买食品。

14。加州的司机都知道,加州的汽油比全国其他地方都贵得多。 福克斯新闻的记者马特芬恩在推特上分享说,洛杉矶的一个加油站的柴油价格现在也接近每加仑 7 美元。

15。据美国前驻北约大使库尔特沃尔克称,俄罗斯总统弗拉基米尔普京对乌克兰长达数周的入侵已”没有退路”。

二.美国疫情

昨日美国新增新冠患者33,510人

总确诊人数为79,717,247人。

新增死亡人数797人。

总死亡 970,806人。

康州新增新冠感染336人,新增死亡40人。

纽约州新增新冠确诊人数2,052人。新增死亡人数18人。

新泽西州昨天新增病例为1,523人。新增死亡为6人。

马萨诸塞州新增新冠患者为882人, 死亡6人。

马里兰州昨日新增新冠患者430人。新增死亡人数为4人。

加州昨日新增6,469人,死亡116人。

得克萨斯州新增3,278人,死亡为0人。

佛罗里达州新增人,死亡人。

亚利桑那州新增人,死亡为人。

乔治亚州新增1,099人,死亡63人。

北卡罗来纳新增1,740人,死亡28人。

田纳西州新增332人,死亡16人。

华盛顿DC新增人, 死亡人。

三.世界疫情

1) 亚洲疫情:

昨日印度新增新冠患者2,075人;

日本新增49,109人;

印尼新增9,528人;

菲律宾新增540人;

孟加拉新增108人。

土耳其新增19,126人。

台湾昨日新增75。

韩国昨日新增381,329人,

中国新增22,268人。

2)非洲疫情:

南非昨日新增新冠患者_人。

埃塞俄比亚新增26人。

摩洛哥新增52人。

3)拉美疫情:

巴西昨日新增新冠患者51,990人.

哥伦比亚新增665人。

阿根廷新增14,416人。

智利新增15,445人。

墨西哥新增_人。

4)欧洲疫情

俄罗斯昨日新增新冠患者33,815人。

德国新增260,237人。

法国新增97,657人。

英国新增93,093人。

意大利新增78,577人。

西班牙新增64,597人。

5)全球新冠总感染人数为469,558,389人。

总死亡人数为6,074,234人。

以下是社区广告:


顾震帝 2022年3月20日,于康州。

9,010 thoughts on “美国疫情及新闻简报(03-20-2022)”
  1. Why axolotls seem to be everywhere — except in the one lake they call home
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    Scientist Dr. Randal Voss gets the occasional reminder that he’s working with a kind of superstar. When he does outreach events with his laboratory, he encounters people who are keen to meet his research subjects: aquatic salamanders called axolotls.

    The amphibians’ fans tell Voss that they know the animals from the internet, or from caricatures or stuffed animals, exclaiming, “‘They’re so adorable, we love them,’” said Voss, a professor of neuroscience at the University of Kentucky College of Medicine. “People are drawn to them.”
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    Take one look at an axolotl, and it’s easy to see why it’s so popular. With their wide eyes, upturned mouths and pastel pink coloring, axolotls look cheerful and vaguely Muppet-like.

    They’ve skyrocketed in pop culture fame, in part thanks to the addition of axolotls to the video game Minecraft in 2021. These unusual salamanders are now found everywhere from Girl Scout patches to hot water bottles. But there’s more to axolotls than meets the eye: Their story is one of scientific discovery, exploitation of the natural world, and the work to rebuild humans’ connection with nature.

    A scientific mystery
    Axolotl is a word from Nahuatl, the Indigenous Mexican language spoken by the Aztecs and an estimated 1.5 million people today. The animals are named for the Aztec god Xolotl, who was said to transform into a salamander. The original Nahuatl pronunciation is “AH-show-LOAT”; in English, “ACK-suh-LAHT-uhl” is commonly used.
    Axolotls are members of a class of animals called amphibians, which also includes frogs. Amphibians lay their jelly-like eggs in water, and the eggs hatch into water-dwelling larval states. (In frogs, these larvae are called tadpoles.)

    Most amphibians, once they reach adulthood, are able to move to land. Since they breathe, in part, by absorbing oxygen through their moist skin, they tend to stay near water.

    Axolotls, however, never complete the metamorphosis to a land-dwelling adult form and spend their whole lives in the water.

    “They maintain their juvenile look throughout the course of their life,” Voss said. “They’re teenagers, at least in appearance, until they die.”

  2. Broken spheres
    Dyson died in 2020 before any of his spheres could be found — although they are just one of a dozen ideas that bear his name.
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    “As a young scientist, Dyson showed that three competing quantum theories were actually the same theory — he summarily ended the competition,” said William Press, the Leslie Surginer Professor of Computer Science and Integrative Biology at the University of Texas at Austin. He was not involved in the study. “Later, he applied his genius to areas of astronomy, cosmology, the extraterrestrial realm, and also the very real problem of nuclear proliferation here on planet Earth. At the time of his death, he was recognized as a provocative and creative thinker.”

    George Dyson also attested to his father’s fascination and comprehensive reach across disciplines.
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    “Taking advantage of a short attention span and an aversion to bureaucracy, he contributed to five fields of mathematics and eleven fields of physics, as well as to theoretical biology, engineering, operations research, literature, and public affairs,” the younger Dyson said. “Many of his ideas were controversial, with one of his guiding principles being that ‘It is better to be wrong than to be vague.’”

    The approach of the researchers behind the new study could offer a more fruitful path in the search for extraterrestrial intelligence, said Tomotsugu Goto, an associate professor of astronomy at the National Tsing Hua University in Taiwan. He also was not involved with the study.

    “However, contamination by circumstellar debris disks, which mimic Dyson Sphere infrared signatures, remains a concern,” he added in an email. “Authors argue that the debris disks around (dwarf stars) are rare, but the 7 candidate authors selected out of 5 million sources are also rare. Despite this, the seven candidates warrant further investigation with powerful telescopes for a more definitive evaluation.”

  3. ‘Dyson spheres’ were theorized as a way to detect alien life. Scientists say they’ve found potential evidence
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    What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star — harnessing all the energy it produces.

    “One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star,” wrote Dyson in a 1960 paper in which he first explained the concept
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    If it sounds like science fiction, that’s because it is: Dyson took the idea from Olaf Stapledon’s 1937 novel “Star Maker,” and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
    Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of “a loose collection or swarm of objects traveling on independent orbits around the star.”

    In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.

    “Scientists (at the time) were largely receptive, not to the likelihood that alien civilisations would be found to exist, but that a search for waste heat would be a good place to look,” said George Dyson, a technology writer and author and the second of Dyson’s six children, via email. “Science fiction, from ‘Footfall’ to ‘Star Trek,’ took the idea and ran with it, while social critics adopted the Dyson sphere as a vehicle for questioning the wisdom of unlimited technological growth.”

  4. Axolotl problems
    As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
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    To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

    These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
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    While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

    In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
    In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

    What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

  5. Axolotl problems
    As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
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    To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

    These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
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    While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

    In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
    In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

    What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

  6. Axolotl problems
    As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
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    To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

    These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
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    While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

    In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
    In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

    What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

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    Dr. Ilze Runce veicot griezienus, strada ar mikroskopu, kas dod iespeju iegut matu biezumu, kas maksimali pietuvinats dabigajam un viena procedura iespejams parstadit lidz pat 4000 graftu. Manuala FUE metode tiek izmantota ari uzacu un bardas parstadisana. Procedura norit vieteja anestezija un ir klientam komfortabla – tas laika pacients visu laiku atrodas sedus stavokli proceduru kresla un var lietot datoru, telefonu, planseti, lasit gramatu vai skatities TV.

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  8. Axolotl problems
    As Mexico City grew and became more industrialized, the need for water brought pumps and pipes to the lake, and eventually, “it was like a bad, smelly pond with rotten water,” Zambrano said. “All of our aquatic animals suffer with bad water quality, but amphibians suffer more because they have to breathe with the skin.”
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    To add to the axolotls’ problems, invasive fish species such as carp and tilapia were introduced to the lake, where they feed on axolotl eggs. And a 1985 earthquake in Mexico City displaced thousands of people, who found new homes in the area around the lake, further contributing to the destruction of the axolotls’ habitat.

    These combined threats have devastated axolotl populations. According to the International Union for Conservation of Nature, there are fewer than 100 adult axolotls left in the wild. The species is considered critically endangered.
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    While the wild axolotls of Lake Xochimilco have dwindled to near-extinction, countless axolotls have been bred for scientific laboratories and the pet trade. “The axolotl essentially helped establish the field of experimental zoology,” Voss said.

    In 1864, a French army officer brought live axolotls back to Europe, where scientists were surprised to learn that the seemingly juvenile aquatic salamanders were capable of reproduction. Since then, scientists around the world have studied axolotls and their DNA to learn about the salamanders’ unusual metamorphosis (or lack thereof) as well as their ability to regrow injured body parts.
    In addition to their role in labs, axolotls have become popular in the exotic pet trade (though they are illegal to own in California, Maine, New Jersey and Washington, DC). However, the axolotls you might find at a pet shop are different from their wild relatives in Lake Xochimilco. Most wild axolotls are a dark grayish brown. The famous pink axolotls, as well as other color variants such as white, blue, yellow and black, are genetic anomalies that are rare in the wild but selectively bred for in the pet trade.

    What’s more, “most of the animals in the pet trade have a very small genetic variance,” Zambrano said. Pet axolotls tend to be inbred and lack the wide flow of different genes that makes up a healthy population in the wild. That means that the axolotl extinction crisis can’t simply be solved by dumping pet axolotls into Lake Xochimilco. (Plus, the pet axolotls likely wouldn’t fare well with the poor habitat conditions in the lake.)

  9. Why axolotls seem to be everywhere — except in the one lake they call home
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    Scientist Dr. Randal Voss gets the occasional reminder that he’s working with a kind of superstar. When he does outreach events with his laboratory, he encounters people who are keen to meet his research subjects: aquatic salamanders called axolotls.

    The amphibians’ fans tell Voss that they know the animals from the internet, or from caricatures or stuffed animals, exclaiming, “‘They’re so adorable, we love them,’” said Voss, a professor of neuroscience at the University of Kentucky College of Medicine. “People are drawn to them.”
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    Take one look at an axolotl, and it’s easy to see why it’s so popular. With their wide eyes, upturned mouths and pastel pink coloring, axolotls look cheerful and vaguely Muppet-like.

    They’ve skyrocketed in pop culture fame, in part thanks to the addition of axolotls to the video game Minecraft in 2021. These unusual salamanders are now found everywhere from Girl Scout patches to hot water bottles. But there’s more to axolotls than meets the eye: Their story is one of scientific discovery, exploitation of the natural world, and the work to rebuild humans’ connection with nature.

    A scientific mystery
    Axolotl is a word from Nahuatl, the Indigenous Mexican language spoken by the Aztecs and an estimated 1.5 million people today. The animals are named for the Aztec god Xolotl, who was said to transform into a salamander. The original Nahuatl pronunciation is “AH-show-LOAT”; in English, “ACK-suh-LAHT-uhl” is commonly used.
    Axolotls are members of a class of animals called amphibians, which also includes frogs. Amphibians lay their jelly-like eggs in water, and the eggs hatch into water-dwelling larval states. (In frogs, these larvae are called tadpoles.)

    Most amphibians, once they reach adulthood, are able to move to land. Since they breathe, in part, by absorbing oxygen through their moist skin, they tend to stay near water.

    Axolotls, however, never complete the metamorphosis to a land-dwelling adult form and spend their whole lives in the water.

    “They maintain their juvenile look throughout the course of their life,” Voss said. “They’re teenagers, at least in appearance, until they die.”

  10. В сфере оптимизации сайта под поисковые системы (SEO) существует множество терминов и понятий, важных для продвижения. Ссылочный вес или ссылочная масса — один из важнейших факторов, влияющих на ранжирование веб-проекта в результатах поиска. В этой статье мы кратко рассказываем, что представляет собой ссылочная масса, какие ее типы выделяют, как она формируется и влияет на рейтинг сайта, а также даем несколько советов о ее наращивании.
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    Что такое ссылочная масса сайта
    Ссылочный профиль (масса, вес) — это совокупность всех внешних гиперссылок, которые указывают на определенный сайт. Чем больше качественных внешних ссылок указывают на веб-ресурс, тем выше его авторитет с точки зрения поисковых систем. Поэтому внутренние ссылки, то есть оставленные в пределах самого сайта, ведущие на него же, не являются частью ссылочной массы.
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    [url=https://xrum8.ru]ссылочная масса[/url]

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