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——中国科学院办院方针

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Economic Watch: China to bring coal prices back to appropriate range******

BEIJING, Oct. 20 (Xinhua) -- China's top economic planner has said it will use all necessary means provided by the price law to bring coal prices back to an appropriate range and ensure a secure and stable energy supply.

The recent coal price hike has completely deviated from the fundamentals of supply and demand, and prices are still showing further irrational rises, said the National Development and Reform Commission (NDRC). The NDRC made the comments after holding symposiums with major coal companies, the coal industry association and the China Electricity Council.

Coal is a pivotal energy source for China. It is closely related to the national economy and people's livelihood, the NDRC said, adding that it will come up with measures to control coal prices per the law.

When the prices of important commodities and services rise significantly or are likely to rise significantly, relative authorities may take intervention measures like limiting profit margins, stipulating price limits, and implementing a price increase filing system, according to the country's price law.

Market regulators will step up enforcement and inspection, clamp down on illegal activities such as spreading false information, price gouging, and hoarding, and effectively maintain market order.

The country has made progress in ensuring energy supply and stabilizing energy prices, said the NDRC.

Since the end of September, a batch of coal mines has been approved and put into operation. On Oct. 18, the country's daily coal output exceeded 11.6 million tonnes, setting a new high this year, the NDRC said.

The NDRC last week announced an improved pricing mechanism for coal-fired power to deepen market-oriented pricing reform in the sector.

The floating range of the market-based electricity transaction prices is adjusted in principle to 20 percent fluctuation in either direction, compared with the current ceiling of 10 percent and the floor of 15 percent from the benchmark price.

The market transaction prices of coal-fired electricity for high energy-consuming enterprises are not restricted by the ceiling of 20 percent upward fluctuation.

All local governments should prioritize the supply of low-cost power for residents and agriculture, said the NDRC.

Next, the country will further release coal production capacity, steadily increase coal output, and secure energy transportation.

Efforts should be taken to further promote medium-to-long-term coal supply contracts between coal companies and power generators and heating suppliers to secure sufficient coal for the sector, said the commission.

The commission urged paying close attention to the price fluctuation of steam coal futures. It also encouraged effectively maintaining market order and creating a conducive capital market environment to ensure coal supply. Enditem

明明是春天,重庆街头却黄叶成堆如同秋天,你知道为什么吗?******

原标题:明明是春天,重庆街头却黄叶成堆如同秋天,你知道为什么吗?

今天是一年一度的谷雨,这是春天的最后一个节气,这时候太阳到达黄经30°,源自古人“雨生百谷”之说,这时候也是一年一度最适合播种移苗、埯瓜点豆的时候,然而明明是春天,但是重庆街头,我们看到的景象,却如同秋天一样。

谷雨时节,重庆真的飘起了小雨,中午的时候有短暂放晴,早上和下午都一直沥沥淅淅下过不停,也正是这样的降温的天气,让重庆街头,到处都可以看到大量的落叶,其中以黄桷树最为明显,为什么会这样呢?下午我们一起来聊聊这个话题。

黄桷树原名为黄葛树,是重庆的市树,由于在重庆方言中“角”与“葛”读音相同,加之重庆人认为树木名称应有“木”旁,像金属都有“金”旁,鱼类都有“鱼”旁,江河湖海都有三点水一样,所以重庆人一直都将黄葛树称为“黄桷树”。

作为市树,黄桷树不仅在重庆大街小巷随处可见,而且重庆市名有很多地方都以黄桷命名,比如黄桷坪、黄桷垭、黄桷峡、黄桷渡等,这种树的生命力极为顽强,很多都生长在石坎、石崖和城墙上,根系紧紧地扎在石头缝里,屹然而立。它属于“气生根”植物,只需少量的根系置入土壤就能生长,裸露的根须则可以直接从空气中吸收水分。

黄桷树属高大落叶乔木,其茎干粗壮,树形奇特,悬根露爪,蜿蜒交错,古态盎然。枝杈密集,大枝横伸,小枝斜出虬曲。不仅生命力强大,而且也很长寿,百年甚至几百年的古树在重庆都是很常见的,它们犹如一把把巨伞,为人们遮风挡雨。

至于黄桷树,为什么会在春天落叶?以前常有人解释说是什么季节栽种的,它便在什么时候落叶,其实这样的说活并没有科学依据,属于一种误传,黄葛树是介于落叶与常绿之间的冬青树种,树叶的寿命较长。按理应在深秋初冬的季节落叶却延长到第二年仲春初夏才开始掉落,并且一落叶,马上就长出嫩叶,甚至有些树是边落叶边发新芽。

另一方面,以更科学的解释是,像黄桷树这样的冬青物种,春天落叶延长了叶片的寿命,主要有两个好处,第一是叶片能够更长时间地进行光合作用,为植株在春天的生长提供更多能量,其二则是冬天没有脱落的老叶中的氮磷等养分可以被转运到春天的新生叶中,这样减少了因落叶造成的养分不足,有利于春天新叶的迅速生长。

也正因为如此,所以重庆这几天因为下雨降温而加速了这类冬青树种的落叶,才出现了这组图片中街头落叶成堆的现象,而且这样的现象并不是重庆所独有,南方很多城市都普遍存在这个问题,其中又以黄桷树、阔叶榕等树种为最。

对于这样的解释,你明白了吗?

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Japan confirms 1st case of Omicron coronavirus variant******

AFP。

People wait to be transported to a quarantine facility after arriving at the Narita Airport on November 29, 2021.。

Japan confirmed the first case infected with the Omicron variant of the COVID-19 in the country, the Japanese government said Tuesday.。

The infected person is a Namibian diplomat who tested positive of the COVID-19 at Narita airport near Tokyo upon his arrival on Sunday.。

France to ease COVID isolation rules: government******

France will relax COVID isolation rules from Monday, the government announced, in a bid to ease their impact on society and the economy.。

Fully vaccinated people who test positive will only have to isolate for seven days regardless of the coronavirus variant they were infected with, but can leave quarantine after five days if they show an antigen or negative PCR test.。

There will be no quarantine for fully inoculated individuals who have a close contact test positive.。

However, people must respect protective measures and "undergo regular testing", health minister Olivier Veran said in an interview with Le Journal du Dimanche.。

Until now, those who tested positive in France had to isolate for 10 days with their close contracts also quarantined for a week.。

The maximum isolation period could be up to 17 days – regardless of the variant – if a household contains a positive case.。

The change in rules responds to the need "to take into account the extremely rapid evolution of the spread of the Omicron variant in France".。

It should allow a "benefit-risk balance aimed at ensuring the virus is controlled while maintaining socio-economic life", said the Ministry of Health.。

Additionally, "the first available virological data" showed "the incubation period of Omicron appears to be faster than previous variants, favoring a possible reduction in the length of isolation".。

Meanwhile, people who test positive for the virus – but who are not fully vaccinated – must complete a 10-day quarantine, according to the same rules, but shortened to seven should they present a positive antigen or negative PCR test.。

The seven-day quarantine remains for close unvaccinated contacts, who must show a negative test to leave isolation.。

追梦航天向天行——西昌卫星发射中心航天报国50年全景扫描

1.今明两天北京雷雨频繁 外出需注意防雷避雨

2.金垭机场新航线开通!达州已通航国内21个城市

3.现实世界盖楼的高手,相继进军元宇宙

4.“产教融合”让职业教育成就更多精彩人生

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