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時間:2022-08-15 來源:本站 點擊:258次
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今晚起西安将迎雨雪降温吹风天气 城区有小雨或雨夹雪******

  2022年02月16日16时,西安市气象台发布“春运”专题预报:今天晚上至18日西安市有一次雨雪、降温、吹风天气过程,雨雪较强时段为17日晚上到18日白天。

  今天晚上到明天白天:城区阴天有小雨或雨夹雪,0℃~6℃,周至、鄠邑、长安、蓝田阴天有雨夹雪,山区有小到中雪,其他区县阴天有小雨或雨夹雪,最低气温-2℃~0℃,最高温度5℃~7℃,偏东风3-4级;

  明天晚上到18日白天:阴天有小雨或雨夹雪,南部山区有中雪,-1℃~4℃;

  18日晚上到19日白天:雨夹雪转阴天,0℃~8℃。



来源:华商网-华商报

编辑:胡泽鹏

South Africa detects new COVID******

CFP。

A baby cries as her mother receives her Pfizer vaccine against COVID-19 in Diepsloot Township near Johannesburg on October 21.。

Scientists in South Africa said on Thursday they had detected a new COVID-19 variant with a large number of mutations, blaming it for a surge in infection numbers.。

The number of daily infections in Africa's hardest-hit country has increased tenfold since the start of the month.。

In response, Britain banned all travel from the country and five other southern African nations as concerns grow about the new variant, which scientists say could be more infectious than Delta and more resistant to current vaccines.。

"Unfortunately we have detected a new variant, which is a reason for concern in South Africa," virologist Tulio de Oliveira told a hastily called news conference.。

The variant, which goes by the scientific label B.1.1.529, "has a very high number of mutations," he said, adding that the World Health Organization may give it a Greek variant name – like the dominant Delta strain – on Friday.。

"It's unfortunately causing a resurgence of infections," he said.。

The variant has also been detected in Botswana and Hong Kong among travelers from South Africa, de Oliveira added.。

The WHO said it is "closely monitoring" the reported variant and is expected to meet on Friday to determine if it should be designated a variant of "interest" or of "concern."

"Early analysis shows that this variant has a large number of mutations that require and will undergo further study," the WHO added.。

'A major threat'

South African Health Minister Joe Phaahla said the variant was of "serious concern" and behind an "exponential" increase in reported cases, making it "a major threat."

The country's daily number of infections hit 1,200 on Wednesday, up from 106 earlier in the month.。

Before the detection of the new variant, authorities had predicted a fourth wave to hit South Africa starting around the middle of December, buoyed by travel ahead of the festive season.。

The government-run National Institute for Communicable Diseases said 22 positive cases of the new variant have been recorded in the country.。

The NICD said the number of detected cases and the percentage testing positive are "increasing quickly" in three of the country's provinces including Gauteng, home to the economic hub Johannesburg and the capital Pretoria.。

A cluster outbreak was recently identified, concentrated at a higher education institute in Pretoria, the NICD added.。

Last year, the Beta variant of the virus first emerged in South Africa, although until now its infection numbers have been driven by Delta, which was originally detected in India.。

South Africa has the highest pandemic numbers in Africa with around 2.95 million cases, of which 89,657 have been fatal.。

10 mutations。

Scientists said the new variant has at least 10 mutations, compared with two for Delta and three for Beta.。

"The concern is that when you have so many mutations, it can have an impact on how the virus behaves," Maria Van Kerkhove, the WHO's technical lead on COVID-19, said at a virtual press briefing.。

"It will take a few weeks for us to understand what impact this variant has on any potential vaccines," she added.。

Neutralizing the variant is "complicated by the number of mutations this variant" contains, said one of the South African scientists Penny Moore.。

"This variant contains many mutations that we are not familiar with," she added.。

The Africa Centres for Disease Control and Prevention said it will soon meet South African experts to discuss the variant.。

"There are so many variants out there but some of them are of no consequence on the trajectory of the epidemic," Africa CDC head John Nkengasong told a news conference on Thursday.。

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PC鲜辣报:十二代酷睿完整家族成员曝光 AMD将发两款入门显卡******上周PC领域发生了如下几件值得重点关注的大事:十二代酷睿桌面端完整家族成员曝光;AMD本月将发布两款入门级桌面显卡;NVIDIA开始为RTX 40系显卡量产铺路;联想为拯救者Y7000P 2022款游戏本进行预热。

2022年已经正式到来,回首2021年的最后一周,PC领域依旧发生了即将令人值得关注的几件大事。首先是,Intel十二代酷睿桌面端完整家族成员曝光,其中包含多达20个型号;AMD可能将在CES 2022展会上推出两款入门级桌面显卡,型号为RX 6500 XT、RX 6400;NVIDIA已经向台积电支付四百多亿元,为RTX 40系列显卡量产做准备;联想为拯救者Y7000P 2022款预热,便携性和性能相对于上代产品来说均有很明显的进步。

·十二代酷睿桌面端完整家族成员曝光

Intel在10月份推出了首批十二代酷睿桌面处理器,但是只有K/KF系列,共发布了6款产品。CES 2022展会将至,Intel将会推出更多的十二代酷睿桌面处理器,包括i9、i7、i5、i3、奔腾、赛扬等系列。

近日,有主板厂商公布CPU支持列表,包括20款十二代酷睿新品,并且全都采用了新工艺、新架构。

与首批十二代酷睿相同,明年1月初发布的新品也将采用大小核架构和Intel 7工艺,不过不同系列的核心数量也不尽相同。其中i9系列为8大核8小核,i7系列为8大核4小核,i5-12600为6大核4小核,i5-12500、12400为6大核设计,i3为4大核设计,奔腾系列为2大核设计,赛扬系列也为2大核设计。

三级缓存方面,i9系列为30MB,i7系列为25MB,i5-12600为20MB,i5-12500、12400为18MB,i3系列为12MB,奔腾系列为6MB,赛扬系列为4MB。

核心方面,i9和i7系列采用UHD 770,i5系列采用UHD 730,奔腾和赛扬系列则是UHD 710。

设计方面,K/KF系列为125W,T系列为35W,奔腾系列为46W;标准版大部分65W,i3-12300、i3-12100为60W,i3-12300F、i3-12100F为58W。

鲜辣酷评:Intel在2021年10月份推出首批十二代酷睿处理器,首次使用Intel 7工艺和大小核架构,也标志着桌面端14nm时代正式落下帷幕,但是首批产品只包含K系列和KF系列,产品型号也比较少,只有6款,功耗设定为125W,主要受众为游戏发烧友。所以很多用户更加盼望更多主流型号处理器到来。随着CES 2022展会的召开,Intel将会带来更多的十二代酷睿新品。而从目前的爆料信息来看,整个十二代酷睿桌面端的家族成员将会包含20款型号,涉及从旗舰级的i9系列到入门级奔腾、赛扬系列,基本可以满足各类用户的装机需求。得益于全新的架构和工艺,十二代酷睿在性能和功耗方面也会有更加突出的表现。

·AMD将发布两款入门级桌面显卡

AMD在明年年初将会带来两款入门级新品——RX 6500 XT、RX 6400。这两款显卡都是采用RNDA2架构和Navi 24核心,代号分别为Navi 24 XT、Navi 24 XL。但是令人惊奇的是,这两款显卡采用并不是RX 6000显卡一直沿用的7nm制程,而是直接升级到了6nm制程。这两款显卡也成为了全球首批使用6nm制程的显卡。

RX 6500 XT拥有1024个流处理器、16个光追单元、16MB无限缓存和64-bit 4GB GDDR6显存,等效频率16GHz,带宽128GB/s,功耗为107W,使用6针辅助供电和单风扇散热,采用全高双插槽短卡,拥有DisplayPort、HDMI输出接口。

RX 6400则是768个流处理器,12个光追单元,保留完整的16MB无限缓存,显存频率降至14GHz,带宽112GB/s,功耗仅为53W,无须辅助供电,为半高单插槽显卡。

鲜辣酷评:纵观AMD目前的桌面显卡产品线,型号涉及从RX 6600到RX 6900 XT,基本可以满足主流玩家到游戏发烧友的装机需求。但是由于近两年芯片产能一直持续性紧张,导致显卡一直缺货,所以RX 6000系列显卡涨价也十分严重,所以抬高了普通玩家入手显卡的门槛。AMD可能在CES 2022期间推出RX 6500 XT、RX 6400显卡,这两款显卡除了升级到了6nm制程之外,也同样会支持光线追踪特效和FSR超分辨率采样技术,让入门级玩家也可以享受到真实而又畅爽的游戏体验。

·NVIDIA已经为RTX 40系显卡量产铺路

按照显卡两年的更新换代周期来算,NVIDIA RTX 40系列显卡将于2022年下半年发布,代号为Ada Lovelace,将改用台积电的5nm制程工艺。

根据爆料称,NVIDIA今年三季度曾向台积电预付16.4亿美元,并且将在2022年第一季度再支付17.9亿美元,整个长期订单预付款项将达到69亿美元,约合人民币439亿元。

NVIDIA新显卡的预付款项已经超过往年同期,NVIDIA此举的目的就是为了保障台积电在晶圆方面的供给,在生产上获得一定的优先权,所以RTX 40系列显卡在产品供给方面可能会好于RTX 30系列。

鲜辣酷评:CES 2022期间,NVIDIA在现有产品的基础之上,继续对RTX 30显卡进行细化。所以,RTX 40系列显卡最快也要等到2022年下半年才能正式到来。RTX 40系列显卡最大的变化就是将正式使用台积电的5nm制程,此次NVIDIA向台积电支付大量费用,也标志着RTX 40显卡将正式进入量产阶段。综合之前的爆料,RTX40系列显卡相对于上代产品来说,图形处理能力将会有翻倍提升,功耗表现也会更加出色。

·联想拯救者Y7000P 2022款游戏本即将发布

联想拯救者Y7000P 2022款近期又发布了新的预热信息,称新产品相对于上代产品来说,更强、更轻、更薄。并且公布了官方海报。

从海报上来看,拯救者Y7000P 2022款采用了全新的外观设计,相对于上代产品显得更加方正,厚度比上代薄了11.6%,重量也更轻,机身A面采用金属材质打造。

拯救者Y7000P 2022款的屏幕尺寸为16:9,刷新率为165Hz,屏幕分辨率也上升至2K级别,与上代R9000X的屏幕规格相同。

据悉,明年的拯救者游戏本依旧分为4个系列——Y9000P、Y7000P 和R9000P、R7000P,分别覆盖Intel和AMD平台。

鲜辣酷评:拯救者系列为联想旗下的游戏本产品线,多年来,联想拯救者以其丰富的硬件配置、炫酷的外观设计、出色的屏幕素质赢得了各类游戏玩家的青睐。而即将发布的拯救者Y7000P 2022款在外观和性能方面有了大幅进步。首先说,它的便携性大幅提升,厚度比上代产品薄了11.6%左右,与目前的主流游戏本相比,厚度上有了肉眼可见的变化。另外,它还搭载了2K高刷新率电竞屏,带来更加畅爽真实的视觉体验。这款笔记本可能将在2022年年初发布,预计将会搭载使用大小核架构和Intel 7工艺的十二代酷睿处理器。

Spanish snowboard coach optimistic visit to China helps preparation for Beijing 2022******

MADRID, Dec. 3 (Xinhua) -- Alex Martin, coach of Spain's snowboard cross (SBX) team for the Beijing Olympic Winter Games in February 2022, told Xinhua that although Spain will have a "small" team in Beijing, they have high hopes of coming back home with a medal.。

SBX sees six racers compete on a course which tests their skill and at times their ability to keep out of trouble, in a sport where the slightest loss of concentration can send you tumbling.。

"Talent, technique and tactics is the formula that we have been using in training with all our athletes in the snowboard cross team in the Royal Spanish Federation of Winter Sports (RFEDI)," Martin told Xinhua.。

He highlighted Lucas Eguibar, who is the reigning world champion, and Alvaro Romero, as Spain's two strongest medal hopes, along with Regino Hernandez, who claimed the bronze medal in the PyeongChang Winter Games in 2018.。

Martin has a degree in Physical Fitness science and a Master's degree in High Performance and has been coaching for over 20 years. He began working for the Spanish Federation in 2017 and is currently the technical director for snowboard at the RFEDI and responsible for a team, which has achieved a high level of success.。

The Spanish team recently returned from China after participating in the test event on the Olympic Games circuit, and experience Martin described as "different and very tiring."

"It was complicated," he explained. "Going to international events at the moment requires a double effort because of the care you have to take and the sanitary controls in place because of the pandemic. Maybe that was the hardest thing for our athletes in their first contact with China."

However, despite the difficulty the coach was content with the experience.。

"We learned an important lesson and after this experience, we are now better prepared to show that with a lot of effort, we are able to adapt to a global situation that needs both a physical and a mental effort," he concluded, adding that events such as the Winter Olympics should act as a motivation for everyone to work together to try to end the pandemic. Enditem。

青海玉树州杂多县4分钟连发2次地震,最大震级5.9级

1.对疫情发生地临时静态管理,是必要之举

2.做表分析恋爱对象!女孩:表格管理很正常

3.智库报告:美国近期对华压制行动24项,致“摊牌”概率上升

4.梅婷8岁女儿穿露脐装走红毯!眼睛嘴巴太像妈妈

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