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時間:2022-08-16 來源:本站 點擊:258次
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Nearly 1 million daily COVID******

Xinhua。

People wait for COVID-19 testing in the Queens borough of New York on December 29, 2021.。

The United States set a global record ofalmost 1 million new coronavirus infections reported on Monday,according to a Reuters tally, nearly double the country's peakhit just a week ago as the highly contagious Omicron variantshows no sign of slowing.。

The number of hospitalized COVID-19 patients has risennearly 50 percent in the last week and now exceeds 100,000, a Reutersanalysis showed, the first time that threshold has been reachedsince the winter surge a year ago.。

Overall, the United States hasseen a daily average of 486,000 cases over the last week, a ratethat has doubled in seven days and far outstrips that of anyother country. The 978,856 newinfections on Monday includes some cases from Saturday andSunday, when many states do not report.。

The average number of US COVID-19 deaths per day hasremained fairly steady throughout December and into earlyJanuary at about 1,300, according to a Reuters tally, thoughdeaths typically lag behind cases and hospitalizations.。

Omicron appears to be far more easily transmitted thanprevious iterations of the virus. The variant was estimated toaccount for 95.4 percent of the coronavirus cases identified in theUnited States as of January 1, the US Centers for Disease Controland Prevention said on Tuesday.。

The World Health Organization said on Tuesday that evidence thus far suggests Omicron is causing less severeillness. Nevertheless, public health officials have warned thatthe sheer volume of Omicron cases threatens to overwhelmhospitals, some of which are already struggling to handle a waveof COVID-19 patients, primarily among the unvaccinated.。

Maryland Governor Larry Hogan declared a 30-day state ofemergency on Tuesday and mobilized 1,000 National Guard membersto pandemic response operations as COVID-19 hospitalizations inthe state hit a record high of more than 3,000. That is anincrease of more than 500 percent in the last seven weeks, Hogan said.。

"The truth is that the next four to six weeks will be themost challenging time of the entire pandemic," Hogan toldreporters. "Our newest projections as of today show that COVIDhospitalizations could reach more than 5,000, which would bemore than 250 percent higher than our previous peak of 1,952 lastyear."

Delaware, Illinois, Ohio and Washington DC also havereported record numbers of hospitalized COVID patients in recentdays.。

'Unlike anything we've seen'

In Kentucky, where Tuesday's total of 6,915 new cases isthe highest daily figure since the start of the pandemic,Governor Andy Beshear urged residents to get vaccinated and wearmasks.。

"Omicron is causing a surge unlike anything we've seen andat this rate our hospitals will fill up," he wrote on Twitter.。

The unrelenting surge has prompted more than 3,200 schoolsto close their buildings this week, according to Burbio, a sitethat tracks school disruptions. Schools that have remained openare facing staff shortages and renewed concerns about virusspread.。

In Boston, where more than 54,000 students returned to classon Tuesday following the holiday break, Superintendent ofSchools Brenda Cassellius told reporters there were 1,000 staffmembers out, including 461 teachers and 52 bus drivers.。

"It does make for a difficult start to the day," she said.。

In Chicago, the teachers union objected to Monday's returnto schools, saying the district needs stricter protocols such asrequired testing. Teachers were expected to vote on Tuesday onwhether they support working remotely starting on Wednesday.。

More than 325,000 COVID-19 cases among children werereported in the United States for the week ending December 30,according to the American Academy of Pediatrics and theChildren's Hospital Association, a new high and almost doublethe count from the previous two weeks.。

The Biden administration is finalizing contracts for 500million rapid coronavirus tests it plans to distribute for freeto Americans, the White House said on Tuesday.The initiative is intended to help alleviate a testing crunchthat has led to inadequate supplies and long lines in manyplaces.。

In addition, the administration doubled its order of Pfizer Inc's COVID-19 antiviral pills to a total of20 million treatment courses.。

Government health officials have emphasized that vaccinesand boosters remain the best way to avoid serious illness.。

CBA Roundup: Zhejiang thrashes Beijiang, Shanghai crushes Qingdao******

ZHUJI, China, Nov. 3 (Xinhua) -- Two overwhelming victories took place simultaneously in the Chinese Basketball Association (CBA) here on Wednesday, in which the Zhejiang Lions defeated the Beijing Royal Fighters 101-74, while the Shanghai Sharks eased past the Qingdao Eagles 121-88.。

Zhao Yanhao grabbed a game-high 25 points for Zhejiang, and his teammates Hu Jinqiu and Sun Minghui both added 17 points. Beijing's Zhang Fan pocketed 14 points.。

The first quarter was a seesaw battle, but Beijing had a better performance outside the paint as forward Yu Changdong contributed two 3-pointers. While trailing 26-25, Zhejiang established a 42-36 advantage before the interval due to their greater free throw attempts.。

Sun played a decisive role for Zhejiang in the third quarter by notching 12 points to help his team enter the final period 74-62. Though Stephon Marbury put the best lineup on the court, Zhejiang locked their win with continuous 3-pointer success.。

Elsewhere, Shanghai put much pressure on Qingdao at the very beginning by delivering an 11-0 run in the first six minutes. Qingdao strengthened their defense to cut the deficit into 10 points, but Jamaal Franklin injected momentum to Shanghai, regaining double-digit edge for Shanghai.。

Shanghai did not leave any opportunity to Qingdao after the break since they soon enlarged the gap to 20 points. Thanks to Wang Zhelin and Luo Hanchen's high shooting accuracy under the basket, the gap soon surged to 91-58, forcing Qingdao to completely give up.。

Li Tianrong demonstrated himself with 26 points, followed by Franklin's 18 points and five rebounds. Wang added 14 points. Enditem。

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China's central bank conducts 50 bln yuan of reverse repos******

BEIJING, Nov. 16 (Xinhua) -- China's central bank Tuesday injected 50 billion yuan (about 7.8 billion U.S. dollars) into the financial system via reverse repos.。

The interest rate for the seven-day reverse repos was set at 2.2 percent, according to the People's Bank of China.。

The move aims to keep the liquidity in the banking system reasonably stable, the central bank said.。

A reverse repo is a process in which the central bank purchases securities from commercial banks through bidding, with an agreement to sell them back in the future. Enditem。

减轻旅行负担 相机搭配怎样的镜头适合一镜走天下?******

    如今正值假期出游的好季节,也特别适合出去旅游。而对于旅行拍照这件事,相信有不少人往往会将自己所有的摄影装备全部塞进背包里,无论它们会不会在旅行过程中用得上。然而殊不知过重的背包会让你的旅行体验大打折扣,因此,想要更好的旅行拍照体验,必须要学会给自己的背包“减负”。所以对于绝大部分人来说,没有什么比轻松自在更重要吧,所以如果你不是专业摄影师,但又想在拍出好照片的同时还省力,那么为你的相机选择一支适合“一镜走天下”的镜头绝对是个不错的选择。

    那么问题来了,旅行摄影究竟应该带什么镜头? 

    镜到用时方恨少!难得去旅摄,干脆把家中的长短镜头甚至是大炮都放进相机包中,免得镜到用时方恨少,但最后发现还是大部分都用不上;可能也会有朋友说,想要轻松那就直接定焦头不就行了?而且定焦头画质还更高。话虽如此,定焦镜头影像质素比一般变焦为好,必定可以拍到优质的照片,但旅行期间只利用个别焦距的定焦镜头, 或者未必能拍摄到自己想要的场景与题材。

    综合来看,我认为最合适旅行拍照的镜头一方面要满足广角拍摄的需求,一些大场景的风光以及建筑等都适合用广角来拍摄。其次,长焦也不可少,拍摄远景、人像以及一些特写都需要更长的焦段来突出主体。最后,镜头的尺寸还不能太大,因为毕竟就是冲着轻便去选择的。那么针对这些要求,其实一支可靠的大变焦镜头最为合适,并且各家厂商对于这样的拍摄需求也都有推出不少优质的镜头,比如富士新发布不久的XF16-80mmF4 R OIS WR,即覆盖了广角与长焦同时还具备恒定光圈,是一支非常典型的适合一镜走天下的旅游头。

恒定光圈大变焦旅游头:富士XF 16-80mm F4 R OIS WR

    这枚富士XF 16-80mm F4 R OIS WR镜头适用于富士X系列APS-C画幅无反相机,达到5倍光学变焦,具备光学防抖机构支持6档光学防抖性能,在16-80mm焦距范围内都拥有最大F4的光圈值(相当于35mm焦距24-122mm)。对于户外拍摄,镜头还支持防尘防滴溅,可在零下10度的温度中工作,这对于旅行拍摄也非常重要。

    在光学结构上,XF 16-80mm F4 R OIS WR采用12组16片镜头结构设计,其中包含三组非球面镜片,以及一片非球面ED镜片,可有效控制球面像差和畸变。同时,使用非球面ED镜片作为OIS防抖镜头,可以抑制图像防抖带来的像差波动,具有强大的OIS光学防抖性能,当相机固定到三脚架或平移时会自动进行检测,并做出相应调整。除了其出色的操作性能,XF 16-80mm F4 R OIS WR小巧的体积也是一大亮点,镜头重量仅440g,总长度为88.9mm,比全画幅系统同类5倍变焦镜头轻40%,旅行拍摄时携带起来更加方便。

多功能旅行镜头:佳能RF 24-240mm F4-6.3 IS USM

    佳能近年来一直都在大力发展旗下EOS R全画幅微单系统,而新发布的RF 24-240mm F4-6.3 IS USM镜头是佳能专微RF卡口的第6支镜头,走的是一镜走天下的全画幅多功能旅行镜头路线。镜头达到10倍光学变焦可以拍摄风光、建筑,也方便记录日常生活以及兼顾人像拍摄。此次佳能RF24-240mm F4-6.3 IS USM镜头采用轻量化设计,外观设计简洁紧凑,焦段范围覆盖从24mm至240mm。而且得益于EOS R系统大口径卡口和短后对焦距离的设计优势,作为一支拥有10倍光学变焦能力的RF24-240mm F4-6.3 IS USM镜头在整个焦段的高水准光学表现。


    在光学设计上,佳能RF24-240mm F4-6.3 IS USM采用15组21片结构,其中配备一枚1枚非球面镜片、2枚UD(超低色散)镜片。0.5 m (广角端)/0.78 m(远摄端)的最近对焦距离,可拍摄旅行中的美食或小巧的纪念品的近摄照片。RF24-240mm F4-6.3 IS USM镜头采用7片光圈叶片,该镜头滤镜规格为72mm,最小镜头整体长度约122.5mm,最大直径约80.4mm,重量约750g。在镜头操控上,RF24-240mm F4-6.3 IS USM的对焦环与控制环采用二为一的设计,可自由切换功能设置。另外,在作为对焦环时为无极转动,并没有段落感,因此可进行平滑的对焦和曝光控制操作。在作为控制环功能时,可进行曝光补偿、感光度数值、光圈或快门速度等常用拍摄参数的快捷设定及调整。

全画幅微单的好选择:索尼FE 24-240mm F3.5-6.3 OSS

    索尼FE 24-240mm F3.5-6.3 OSS镜头提供了相比市场上常见的全画幅大倍率变焦镜头28mm焦距更短的24mm焦距,具备了更高的实用性的同时,拍摄者可以凭借这款镜头拍摄出透视感和冲击力比较强烈的照片。这款镜头也是目前索尼FE卡口全画幅镜头群中唯一的大变焦倍率的镜头,规格上面可以说是独一无二的。

    该镜头采用了12组17片的光学结构,其中包含多达5片非球面镜片和1片ED低色散镜片的特殊镜片。这款镜头采用了7片圆形光学叶片 设计,浮动光圈的设计令其具备了F3.5-6.3的最大光圈,而最小光圈则为F22-40。除了浮动的最大光圈值外,这款镜头的最近对焦距离也会随着焦距 在0.5-0.8米之间变化。

副厂首选最佳旅游头:腾龙16-300mm F/3.5-6.3 Di II VC PZD MACRO

    腾龙16-300mm F/3.5-6.3 Di II VC PZD MACRO镜头覆盖16mm(相当于35mm全画幅相机24.8mm)到300mm(相当于35mm全画幅相机465mm)的超大变焦范围,在广角端时能将宏伟风景尽收其中,而在长焦端时可捕捉到远距离拍摄对象具有震撼力的特写画面,还具有1:2.9的微距对焦功能。由12组16枚镜片组成,使用了3枚玻璃铸造非球面镜片、2枚LD低色散镜片和1枚UXR超高折射率镜片。

    腾龙16-300mm采用了复合镀膜技术,最大限度抑制眩光和鬼影,确保清晰锐利图像。而先进的机械设计工艺的运用,使其仍然保有令人惊叹的紧凑轻便外形。腾龙独有的VC (Vibration Compensation)防抖技术,采用3组驱动线圈,通过3个陶瓷球以电磁驱动方式控制补偿镜片(VC镜片),由于VC镜片仅与陶瓷球接触,摩擦更小更平稳。


    旅行拍摄并不只是仅仅只有摄影这么简单,还有旅行经历。摄影作品是给人看,而旅行经历是留给自己的珍贵回忆,虽然有了便利的拍摄设备,但还是要享受旅行才行。

国家统计局:7月份国民经济延续恢复态势

1.印度首次成功试射陆军版中程地对空弹道导弹

2.云南新增确诊病例11例 新增无症状感染者1例

3.武警福建总队“文艺轻骑队”到定点扶贫村慰问演出记事

4.国家医保局回应背后:医保承担多少核酸检测费用?压力多大?

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