面向世界科技前沿,面向国家重大需求,面向国民经济主战场,率先实现科学技术跨越发展,率先建成国家创新人才高地,率先建成国家高水平科技智库,率先建设国际一流科研机构。

——中国科学院办院方针

首页 >  > 

彩票坊网-官网首页

時間:2022-08-17 來源:本站 點擊:258次
【字体:

Shaanxi's foreign trade hits record high in Jan******

XI'AN, Nov. 19 (Xinhua) -- The foreign trade of northwest China's Shaanxi Province increased by 26.5 percent to over 390.1 billion yuan (about 61 billion U.S. dollars) in the Jan.-Oct. period this year, according to local customs authorities.。

The foreign trade figure of the province has exceeded last year's total, said customs of the provincial capital Xi'an.。

During the period, the province's exports stood at 209.17 billion yuan, up by 33.9 percent year on year, while its imports rose by 19 percent to nearly 180.98 billion yuan.。

The export of Shaanxi's mechanical and electrical products grew by 37.2 percent to about 189 billion yuan, accounting for about 90.8 percent of the province's total.。

Shaanxi saw active trade relations with countries along the Belt and Road during the period, registering a total trade of over 65 billion yuan with these countries, up by 29.1 percent year on year. Enditem。

Injuries pile up ahead of Barca's key European clash******

MADRID, Oct. 31 (Xinhua) -- FC Barcelona's injury list has grown even longer ahead of Tuesday night's key Champions League visit to play Dynamo Kiev with striker Kun Aguero and central defender Gerard Pique both looking likely to miss out.。

With just three points from a possible nine in Europe, Barca has to win in midweek, but stand-in coach Sergi saw his injury list extend on Saturday, with Aguero the most worrying case after the Argentinean striker had to be substituted in the 41st minute of Saturday's 1-1 draw at home to Alaves.。

Aguero complained of feeling dizzy and went to the ground holding his chest. Although he was later able to walk off the pitch in the Camp Nou, he was taken to hospital, where he spent the night after undergoing a series of cardiological tests.。

Meanwhile Pique was forced to limp out of the game and replaced by Clement Lenglet in the second half, with the club informing he has "pulled the soleus muscle in his right calf and will need tests to determine the full extent of the injury."

There is also a doubt over impressive young midfielder Nico Gonzalez, who also looked to be struggling in the closing minutes of the game and could be seen asking to be replaced, although it is not certain at present whether he was asking for a change or merely exhausted.。

Barcelona needs to win in Kiev to have a chance of qualifying for the knockout stages of the Champions League and as well as Aguero and Pique, they will be without central defender Ronald Araujo, midfielders Frenkie de Jong, Sergi Roberto and Pedri.。

Forwards Ousmane Dembele and Martin Braithwaite are also unavailable, meaning Sergi will have to rely on B-team players to make up the numbers in what is arguably Barca's most important game of the season. Enditem。

【彩票坊网-官网首页👉👉十年信誉大平台,点击进入👉👉 打造国内最专业最具信赖的彩票平台,为您提供彩票坊网-官网首页用户登录全网最精准计划软件,APP下载登陆,强大的竞彩网上推荐!!】

引汉济渭工程除了调水 对于陕西还有何深意?******  引汉济渭工程秦岭输水隧洞全线贯通。

  为解关中之“渴”,引汉济渭如何将陕南的清水引入关中大地

  纵观陕西水资源分布,秦岭以南属长江流域,水源丰盈,占全省总量71%的水资源;秦岭以北属黄河流域,却仅占全省总量29%的水资源。尤其是改革开放以来,由于气候的变化、经济发展及人口的增长,陕西水资源问题日益严峻。

  为了解决这一问题,上世纪80年代,陕西省内南水北调的设想首次被提出。2003年,经过对多种调水线路组合方案论证比较,陕西省水利厅完成了《陕西省南水北调总体规划》,确定以引汉济渭为骨干线路,与引红济石、引乾济石组成的省内南水北调总体方案。

  2014年9月,国家发改委批复《陕西省引汉济渭工程可行性研究报告》。2015年4月,国家水利部正式批复《引汉济渭工程初步设计报告》。

\


  引汉济渭工程示意图。(图片来源:引汉济渭工程官网)

  根据工程规划,引汉济渭工程分为调水工程和输配水工程两大部分。其中,调水工程由黄金峡水利枢纽、三河口水利枢纽和秦岭输水隧洞三部分组成。输配水工程由黄池沟配水枢纽、输水南北干线及23条支线组成,这一庞大的工程将惠及西安、咸阳、杨凌、渭南等共计21个受水对象。

  2015年12月,三河口水利枢纽大坝主体工程开工建设;2021年2月大坝主体工程全线浇筑到顶,达到141.5米。2018年10月,黄金峡水利枢纽主体工程正式开工;2020年11月成功实现截流,左右坝肩同步建设。

\

  引汉济渭工程秦岭输水隧洞全线贯通。

  在引汉济渭工程中,秦岭输水隧洞是联通汉江渭河的纽带,也是该工程的重难点所在。秦岭输水隧洞施工难度堪称世界第一,这也是人类第一次从底部贯穿秦岭。隧洞全长98.3公里,设计流量每秒70立方米,最大埋深达2012米。

  为了破解秦岭输水隧洞工程建设难题,引汉济渭工程采用了激发极化、三维地震、瞬变电磁等先进技术,实时根据围岩地质情况变化制定针对性支护措施,严防岩爆、塌方等灾害发生。隧洞施工期间,创造了钻爆法无轨运输施工通风距离7.2千米、TBM(隧道硬岩掘进机)法独头掘进施工通风距离16.5千米的世界纪录。同时,测量团队每50米复核测量隧洞控制导线,并对隧洞平面控制网、高程及隧洞中线进行精测,确保隧洞精准贯通。

\

  中国工程院院士张建民表示,引汉济渭工程是“陕西的南水北调”,是中国水利史上又一个伟大的奇迹。从上世纪80年代省内“南水北调”工程的酝酿,到如今秦岭输水隧洞的全线贯通,引汉济渭工程已走过30余年风风雨雨。在陕西突破水困境战略中,引汉济渭工程无疑写下浓墨重彩的一笔。

  届时,每年将有大约15亿立方米汉江水通过秦岭输水隧洞源源不断输入陕西关中地区,为1411万人提供生产生活用水,今年可实现向西安市先期供水。历经10多年的艰苦奋战、凝聚着诸多水利人精神与智慧的超级工程即将实现一江清水润关中。

  不仅仅是调水,引汉济渭工程对于陕西还有何深意?

  我国水资源时空分布不均,夏汛冬枯、北缺南丰。为此,我国修建了纵横南北的南水北调工程,其中中线、东线工程已经通水。但是,受特殊地理、气候因素以及脆弱生态环境、复杂社会关系等因素影响,西线工程立项建设及通水时间目前还难以确定。

\

  南水北调工程线路图。(资料图)

  “即便未来西线工程通水了,依然无法缓解黄河最大支流——渭河的供水难题,”中国工程院院士王浩指出,“兴建引汉济渭工程是国家水资源战略布局中不可或缺的一环”。

  引汉济渭工程贯通汉江和渭河,是长江流域和黄河流域新增的一条纽带。一方面有效补给黄河水资源,另一方面有效盘活陕西水资源整体布局。同时,也是对南水北调工程的有效补充。

\

  汉江流域示意图。(资料图)

  值得注意的是,引汉济渭工程与南水北调中线工程水源都来自汉江,与其他地区存在着竞争用水的可能。对于这个问题,引汉济渭工程在调度运行中在服从汉江流域水资源统一调度和管理的前提下,基本不影响南水北调中线一期工程调水量。

  对于陕西来说,引汉济渭工程也为陕西高质量发展提供有力保障。陕西省水资源严重短缺,2020年全省水资源总量419.62亿立方米,比上年减少15.3%,不足全国平均水平的一半,足以说明陕西省水资源供给的紧张形势。

\

  2020年陕西省行政分区水资源总量表。(数据来源:2020年陕西省水资源公报)

  从水资源分布来看,陕西水资源地域分布严重不均。2020年陕南地区水资源总量达285.53亿立方米,关中地区98.46亿立方米,陕北地区35.63亿立方米,陕南地区水资源总量是陕北地区的8倍。

  从耗水量来看,人口密集的关中地区总耗水量达28.92亿立方米,陕南地区15.07亿立方米,陕北地区仅有8.23亿立方米,整个陕北地区耗水量不及一个汉中市(8.74亿立方米)。

  从工业部门用水来看,2019年陕西工业用水量达6.58亿立方米,占总耗水量的11.98%,相比往年略有上升。陕北能源化工基地对水资源的高昂需求量,以及全省工业产值的逐年走高,也对水资源供给提出了挑战。

  治秦先治水,兴秦先兴水。从郑国渠到引汉济渭,2000年时光沧海桑田,秦人治水的智慧历久弥新,代代传承。在陕西快速发展的今天,古之明训不但被证明,而且又有了新的注解和诠释。引汉济渭这项超级工程的建成,将为陕西高质量发展提供坚实的水资源保障。

  可以说,引汉济渭工程,对陕西而言不仅仅是调水。

  首先,引汉济渭工程可为关中地区带来15亿立方米的年供水量,保障关中城市群发展,并为渭河带来6-7亿立方米的年径流量,改善渭河流域的生态环境。其次,每年帮助陕北地区置换黄河用水指标4-6亿立方米,促进陕北能源化工基地的建设发展。最后,黄金峡水利枢纽、三河口水利枢纽等水利工程,可实现年发电量4.7亿度,带动陕南社会经济发展。

\

  引汉济渭工程将有效改善渭河生态环境。

  绿水青山就是金山银山。引汉济渭工程可有效发挥关中水系骨干作用,改变关中超采地下水,挤占生态水的现状,实现地下水采补平衡,防止城市环境地质灾害。调来的汉江水可以置换部分地下水的水源,把关中盆地地下水水源作为总的战略后备水源。

  正如中国工程院院士王浩所说,引汉济渭工程及其配水网络建设将拉开陕西现代水网建设的大幕,形成南接汉江水系、北达陕北高原(通过黄河水量置换)的区域大水网,实现南北统筹、丰枯相济、多源保障的战略配置构想。

  滔滔汉江水,滚滚东流去。作为南水北调中线工程水源地,汉江优质、充沛的水资源源源北上,滋润着京津大地。如今,汉江水又将穿越秦岭到达渭河,造福三秦大地。千年回望,水利辉煌。引汉济渭也将功比都江堰、郑国渠,汉水西北流的历史功绩必将永远镌刻在人类治理大江大河的历史丰碑之上。这项“超级工程”能否再造一个“天府之国”?未来可期。(文/辛思捷李为涵 图/杜鹏 陈政宇)

Japan declares quasi******

Japan declared a COVID-19 quasi-state of emergency for Tokyo and 12 other prefectures on Wednesday, as the Omicron variant of COVID-19 has been spreading rapidly in these areas.。

The targeted regions include Tokyo, Chiba, Saitama and Kanagawa in the metropolitan area, Aichi, Gifu and Mie in central Japan, Nagasaki, Kumamoto and Miyazaki in the country's southwest region, as well as Niigata, Gunma and Kagawa Prefecture.。

Hiroshima, Yamaguchi and Okinawa have already been placed under a quasi-emergency since early this month. The new measures will mean about a third of Japan's 47 prefectures are subject to stricter curbs.。

Under the quasi-state of emergency, restaurants and bars will be asked to close early and stop or limit the serving of alcohol.。

The restrictions will take effect from Friday to February 13.。

The governors of Osaka, Kyoto and Hyogo in western Japan are planning to discuss whether to ask for quasi-emergency curbs at a virtual meeting on Wednesday.。

Prime Minister Fumio Kishida has taken COVID-19 response as the top priority since taking office in October last year, and his government is faced with the task of striking a balance between imposing anti-virus measures and keeping the economy going.。

"I think we don't need to have eateries closed if people dine in a group of about four and speak quietly while wearing face masks," said Shigeru Omi, the government's top COVID-19 adviser.。

Japan has been seeing a resurgence in COVID-19 cases since early January amid the spread of the Omicron variant, with the nationwide figure of daily cases rising nearly 200 times to 32,197 on Tuesday from around 150 in the previous month.。

The number of new cases in Tokyo stood at 7,377 on Wednesday, over 1,000 more cases than the previous record of 5,908 registered in August last year.。

The daily count of new cases in the capital had remained under 100 from October last year to January 2.。

Japan has started its booster shot of the COVID-19 vaccine program, which began with inoculation for medical staff in December 2021, followed by senior citizens from February this year and then people in general.。

The vaccination rate of Japanese who have finished the full two shots totaled 79.9 percent, while the rate of those who have received the booster dose was 1.3 percent, according to government data on Wednesday.。

音乐人张博猝逝,才四十出头刚当爸,曾与那英合作

1.俄军步兵战车遭遇地雷后爆炸 俄士兵蜂拥而出四散逃跑

2.深圳官博欢迎周鹏:来了就是深圳人 新赛季一起加油

3.俄军接装新型无人直升机 将用于研究反无人机作战

4.印度首次成功试射陆军版中程地对空弹道导弹

© 1996 - 彩票坊网-官网首页 版权所有 xxxxx

地址:

电话:(总机)

编辑部邮箱:

正德神彩首页入口-网信彩票平台-首页-凯撒彩票-首页-大优彩票官网-大优彩票app下载_「安全购彩」-百姓彩票-首页-手机购彩(中心)有限公司-福彩快3平台-安全购彩-彩票-购彩大厅-斗鱼彩票-直营官方网站-乐喜彩票网-Welcome-爱投彩票老版本_安全购彩-江苏快3 - 购彩官网 - 国际精益学院-趣购彩-购彩大厅-优彩-官网-彩神2 - 彩神2官方投注app平台|注册-金信彩票-购彩大厅
高圆圆随拍照曝光 沐浴阳光下闭眼甜笑| 玄彬透露孙艺珍怀孕后近况 称没发生特别的改变| 两航班抵温州机场后检出阳性 15名密接者感染| 俄媒:普京为俄军制定五大关键任务 优先更新武器| 军     医| 中国大学最赚钱的专业,文科生看哭了| 字节盯上了“月子”市场这块蛋糕?| 望年底发布,新一代沃尔沃XC90 EV专利图曝光| 为避开西方制裁,俄罗斯正考虑大招| 巴拉格:利桑德罗曾防死过哈兰德,花了6000万欧签他要给他时间| 续航大幅提升 红旗E-QM5 PLUS将于8月17日上市| 高质量发展赋能高校思政“金课”| 李想:5年内增程式仍是SUV最佳方案| 苏莱曼尼周年纪念日临近,伊朗的报复“在路上”?| 这10条迷人的中国公路 做梦都想去一次| 泰国夜店疫情传到内阁?泰国交通部长被感染| 单日新增连破纪录 日本大阪疫情亮红灯| 特斯拉前经理谈与马斯克共事:他没什么架子,但别顶嘴|