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時間:2022-08-18 來源:本站 點擊:258次
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Beijing 2022 conducts water******

BEIJING, Dec. 3 (Xinhua) -- Snow making for Alpine skiing events at the 2022 Winter Olympics is underway in Beijing's Yanqing district and is expected to be completed by mid-January.。

The water needed for snow making at the Yanqing competition zone, where Alpine skiing events will be staged, will account for just 1.6 percent of water used in the area, according to the Beijing Water Authority.。

In the Zhangjiakou competition zone, where freestyle skiing, snowboarding, cross-country skiing, biathlon and ski jumping events will take place, the water demand during the Games will account for 9.8 percent of the total current water consumption in Zhangjiakou's Chongli district.。

"The man-made snow will not affect the local water usage," said Zhao Weidong, a spokesman for the Beijing 2022 organizing committee (BOCOG).。

Competition snow requires a higher density than recreational snow in order to meet the requirements of the FIS, professional skiing's governing body, and to ensure conditions are consistent for each competitor.。

Man-made snow was first used at the 1980 Lake Placid Olympic Winter Games. Around 90 percent of snow used at the Alpine skiing venue for the PyeongChang 2018 Winter Olympics was artificial, while man-made snow was also a feature of Vancouver 2010 and Sochi 2014.。

In line with Beijing 2022's goal of hosting a sustainable and eco-friendly Games, a series of water-conserving techniques have been adopted in snowmaking, according to BOCOG.。

"For Alpine skiing, natural snowfall is incapable of providing sufficient competition snow. Even if the natural snow depth reaches 3m, it can only be compressed into a snow layer of 30cm to 40cm in depth, still far off the requirement for Olympic tracks, which is also one of the reasons why man-made snow has been widely used in snow sports in Winter Olympics worldwide," said Lyu Hongyou, an operations manager at Yanqing.。

Snow-making is not an irreversible consumption of water resources; instead, the snow-melt water can be recycled into reservoirs. Three reservoirs with a total maximum water storage of 160,000 cubic meters can collect the snow-melt and rainwater through conduits in the Yanqing competition zone and pump up the water for snowmaking in the venues, forming an internal recycle of water resources, said Sun Xianghui, an engineer from Beijing Beikong Jing'ao Construction Corporation.。

In the south of Yanqing, a sewage treatment station has been established to process the sanitary sewage from the competition zone into reclaimed water for plant-watering and toilet use, Sun added.。

During the snowmaking process for Beijing 2022 venues, the collected natural precipitation and the overland runoff will be primarily used, and an intelligent system will help decide the timing for snowmaking based on the weather conditions, also in an endeavor to further save water resources and improve efficiency, Zhao said. Enditem。

视频|网红穿便服打卡切尔诺贝利 网友质疑其不穿防护服行为******

近日,某网红博主在社交平台分享的一组切尔诺贝利打卡照引发关注,照片中,该博主身穿便服在几处废弃建筑物前留影,包括著名的核“石棺”,该行为随后引发热议。有网友质疑其不穿防护服的行为,并认为其不应该宣传这种地方,可能造成误解、吸引更多人无防护前往。



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陕西已完成前两例病例全基因测序 明确为德尔塔变异株******

记者从陕西省卫健委了解到,陕西在首例外省游客确诊后,第一时间启动病毒全基因组测序工作,截至目前(28日)已经完成前两例病例的全基因测序,明确为德尔塔变异株,并同外省基因测序结果进行比对分析,为查找感染来源提供技术支撑。

针对近期陕西重大会议、重要活动多,残特奥会、杨凌农高会、欧亚经济论坛等重大会议活动陆续在陕举办,外来人员多、成分复杂、管控难度大。陕西在快速有效做好本轮疫情处置的同时,举一反三,提高警惕,毫不放松抓好陕西全省社会面疫情防控工作,封闭相关风险场所,对病例活动过的18处风险场所封闭管理,已消杀面积约24.3万平方米。对高风险人员,每2天开展1次核酸检测,对省上规定的21类重点人群的其他人员每周检测2次。(总台记者 吴成轩 刘天惠)



来源:央视新闻客户端

编辑:田媛

Maccabi hand Barcelona first defeat in basketball's Euro League******

JERUSALEM, Oct. 28 (Xinhua) -- Israeli champions Maccabi Tel Aviv notched an impressive 85-68 home win over Spanish champions FC Barcelona in the seventh round of basketball's Euro League on Thursday evening.

It was Barcelona's first loss in the tournament after six straight wins, while Maccabi now have five wins in seven games.

Maccabi dominated the first quarter, which ended 31-18, thanks to points by Derrick Williams, Scottie Wilbekin and Jalen Reynolds.

James Nunnally and Keenan Evans lifted the home team 45-24 ahead in the 26th minute and ended the half 56-36 up.

Nicola Mirotic led Barcelona to an 8-0 run early in the third quarter, and later the gap was cut to 65-54 at the end of the quarter with key points by Cory Higgins.

A strong team defense and significant offensive contribution by Wilbekin raised Maccabi to 74-58, and the Israeli side held on for a comfortable win.

Nunnally scored a team-high 17 points for Maccabi, with Wilbekin adding 16 more.

Higgins led the Barcelona scorers with a game-high 20 points. Mirotic added 17 points.

Barcelona will play their next game in Italy against Olimpia Milano on November 4, while Maccabi will face Saski Baskonia in Spain the following evening. Enditem

7月房价再度调头向下 分析称市场仍在寻底过程中

1.全市场:罗马将在夏窗关闭后再与扎尼奥洛谈续约至2027年

2.赛诺菲特药业务全球负责人Bill Sibold:挖掘创新潜力 “全力致胜”深耕特药领域

3.8个好友抱团搬到福建山村 住土屋过低物欲生活

4.北京近4日有37例确诊病例来自集中隔离点

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