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

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西安雁塔区设置核酸检测点25处 其中10个24小时采样点******微信图片_20220204100023.jpg

秦岭国家公园创建工作进展如何?人工繁育大熊猫成活率达100%******

3月1日,华商报记者从秦岭国家公园宣传语征集活动启动仪式上了解到,秦岭国家公园创建工作已进入关键阶段。目前,各项创建工作扎实推进,取得了显著成效。
成效包括:
有序调处矛盾冲突问题。省级相关部门通力协调配合,积极对接6市政府,形成矛盾冲突问题调处意见,并按照相关政策规定对拟设立的秦岭国家公园范围内存在的矛盾冲突问题进行妥善处理。制定《陕西省秦岭核心保护区和重点保护区尾矿库清理整治工作方案》《陕西省秦岭区域水电项目退出拆除和整治工作方案》,退出矿业权169宗,完成375座小水电整治任务。
不断加强生态保护修复。一是组织自然资源保护专项行动。开展打击破坏野生动物专项行动、“中央环保督察反馈问题整改”“森林督查”“绿盾”“绿剑”等专项行动,严厉打击各类破坏野生动植物资源的违法犯罪活动。二是扎实开展生态修复工作。扎实实施退耕还林、天然林保护、森林抚育、生态廊道建设等工程,累计投入资金15.6亿元,完成营造林674.3万亩,管护天然林5300余万亩,恢复栖息地7000余亩,拆除机械围栏20000米。三是持续开展野生动植物保护。持续开展大熊猫、朱鹮、林麝等物种的人工繁育和野化放归工作。根据监测统计,大熊猫的野外栖息地范围不断扩大,野外偶遇率持续增加,三年来人工繁育大熊猫12只,人工繁育成活率达100%,圈养种群达到37只;野外朱鹮数量从重新发现时的7只扩大到现在的7000余只,实施野化放归朱鹮3批次共61只;林麝野生种群稳步扩大,人工繁育林麝3万余只,占全国总量70%以上,实施林麝野化放归1次13头;金丝猴由上世纪70年代的3300余只增长到现在的5000余只。秦岭有种子植物164科1052属3800多种。发现兰科植物新记录1属12种,秦岭石蝴蝶、华山新麦草、长序榆、陕西羽叶报春等野生植物在人工繁育方面取得重大技术突破,秦岭石蝴蝶成功实现了跨县域野外回归,秦岭红豆杉实施迁地保护14000余亩,独叶草首次在太白山海拔2880米处被发现。
加强基础设施和能力建设。创建工作开展以来,拟设立的秦岭国家公园范围累计投入各级各类财政资金75.15亿元,为创建工作提供有力经费保障。落实中央基本建设项目11个,总投资1.97亿元;落实中央预算内投资项目20个,总投资2.47亿元。拟设立的秦岭国家公园范围内基础设施和巡护、监测装备现代化水平显著提升,基层一线巡护人员工作条件得到明显改善,管护能力进一步加强。建设高山视频监测点245处,布设红外相机1241台,科研监测体系基本建成。
下一步,陕西将继续坚持生态保护第一、国家代表性、全民公益性的国家公园理念,当好秦岭生态卫士,认真完成各项创建任务,不断加强秦岭自然生态系统原真性、完整性保护,争取国家早日批准设立秦岭国家公园。
华商报记者 任婷


来源:华商网-华商报

编辑:方正

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双语热点:水可以在多低温度下不结冰?全新纪录是零下44度******

大家对水的工作经验认知能力是:水在0℃会结冰,但在某种标准下,水事实上可以在更低的温度范畴内保持液体状态。对生物学家而言,这一超低温的極限是零下38℃,小于这一温度水一定会结冰。而近期发布的一项科学研究中,研究工作人员将这一極限推动到了零下44℃。

Researcher pushes limit of when water will freeze。

Though it is one of the great mysteries of science, the transformation of water into ice often escapes people's minds as it is just assumed that's what happens. But how and why it happens is the subject of intense scrutiny by ice scientists like Hadi Ghasemi, Cullen Associate Professor of Mechanical Engineering at the University of Houston. In order to watch the process of crystallization of water into ice at the molecular level, Ghasemi is reporting the best look yet at the process: water-ice phase transformation down to 2 nm (nanometers) in diameter.。

水就会结冰好像是一件理所应当的事儿,但我觉得水结冰的全过程怎样产生、怎么会产生,仍是科技界的一大疑团,也是休斯敦大学机械设备水利学副教授职称哈迪·卡西米(Hadi Ghasemi)等科学研究“冰”的生物学家密切关注的问题。为了更好地科学研究在分子结构水准上水结晶结冰的全过程,卡西米在直徑2纳米技术的限度下对水到冰的改变全过程开展了观查。

Then when Ghasemi examined these tiny particles, he made another discovery. He could break the limit of when water freezes and maintain the tiny droplets as liquid by putting them in contact with soft interfaces, like gels or lipids.。

卡西米在分析这种小水滴时拥有一个探索与发现:让这种小水滴与例如疑胶或脂质的柔性页面触碰,就可以摆脱水结冰的温度限定,使他们在非常低的温度下仍维持液体。

"We found that if a water droplet is in contact with a soft interface, freezing temperature could be significantly lower than hard surfaces. Also, a few-nanometer water droplet could avoid freezing down to -44 C if it is in contact with a soft interface," Ghasemi reports in Nature Communications.。

此项科学研究近日发布于《自然·通讯》(Nature Communications)杂志期刊。卡西米说:“大家发觉,水滴在触碰柔性页面时,比触碰刚性页面时的冰度更低。一些纳米技术限度的水滴在触碰柔性页面时,可以在低达-44℃的温度下维持不结冰。”。

The limit of freezing temperature of a water droplet is -38 C. That is, any water droplet will freeze at some temperature between 0 C to -38 C. Below this temperature, freezing has been inevitable, until now.。

先前,水的冰度的極限是-38℃,换句话说,无论在一切情况下,水滴都是会在0℃~-38℃间的某一温度下结冰,而小于-38℃时水滴必定会结冰。如今,这一记录被突破了。

The process of freezing such a tiny water droplet plays a critical role in the survival of animals in cold environments as a frozen water droplet inside a cell leads to the rupture of the cell and death. The process also plays a key role in climate prediction, cloud conditions, cryopreservation of organs and technologies exposed to icing conditions such as aircraft and wind turbines.。

细微水滴的结冰全过程对小动物在严寒自然环境下的存活有关键的危害,由于体细胞内的水滴凝结会造成体细胞破碎和身亡。除此之外,细微水滴的结冰全过程,对气侯预测分析、云彩情况、超低温冻存人体器官及其发展趋势飞机场和风力发电机等遭遇结冰考验的技术性,都激发着主导作用。

"Experimental probing of freezing temperature of few nanometer water droplets has been an unresolved challenge. Here, through newly developed metrologies, we have been able to probe freezing of water droplets from micron scale down to 2 nm scale," said Ghasemi.。

卡西米说:“根据试验检测几纳米技术限度水滴的冰度,一直是个难以解决的难点。在人们的近期科学研究中,根据新开发设计的测定技术性,大家可以科学研究的结冰全过程,早已从μm限度变小到2纳米技术的限度。

Previously Ghasemi created an ice-repelling material for aerospace applications using a new concept called stress localization. His current findings contribute to a greater understanding of natural phenomena and provide guidelines for further design of anti-icing systems for aviation, wind energy and infrastructures and even cryopreservation systems.。

先前,卡西米运用内应力部分化(stress localization)的新理念创造发明了一种使用于航天航空行业的抗冰原材料。而他此次的发觉有利于增加大家对水结冰这类天气现象的了解,可以为设计方案航空公司机器设备、风力开发设计的基础设施建设及其超低温存储系统软件的抗冰系统给予参照。

Countdown to Beijing 2022******

LISBON, Oct. 19 (Xinhua) -- Portugal expects to have its best performance and its largest delegation ever at the Beijing 2022 Olympic Winter Games, according to Pedro Farromba, member of the Portuguese Olympic Committee (COP) and President of the Federation of Winter Sports of Portugal.

"We have a long friendship with China, and these Games will be a milestone. It will be the biggest Winter Olympics of all time because we trust China's organizational capacity, logistics, infrastructure, and quality of facilities," he said in a joint interview with Chinese media.

According to Farromba, Portugal's preparations have been difficult due to pandemic-related restrictions, with many changes and cancelations to schedules.

"We have no idea of the exact number of athletes that we are going to take. It is very difficult to develop in our country a sport that is not linked to the sun, the beach, and football," he explained.

However, he highlighted that this will be the fifth consecutive edition of the Winter Olympic Games in which Portugal will participate.

"We have a learning path and we have already gained some experience, with financial support from the Portuguese government. We will do our best, even without waiting for medals, but we will fight and represent our country with dignity, developing winter sports in Portugal," said Farromba.

He added that Portugal would this month complete the construction of an ice rink to help develop sports that until now were developed outside the country or on wheel tracks.

Farromba added that he believed the 2022 Winter Olympics in Beijing will be "very safe" despite fears of COVID-19.

"We have had conversations with the Olympic organizing committee that give us great confidence in the event," he said, noting that he agreed with China's decision not to allow spectators from overseas to be present during the Games.

"In competitions, it is always important to have the support of the public. We had the expectation, when the Games were scheduled, to have the support of the Portuguese community in Macao. But we can't have the best scenario in this difficult time we live in," he recalled.

For the member of the COP, the Olympic Games means "hope", and the most important is the "appreciation of the Olympic ideals, fraternity, and healthy competition", he concluded in the interview. Enditem

宇宙尽头是考公,但乡镇公务员除外

1.河北滦平:打造多业态全域旅游格局

2.我,985毕业,期望工资3500

3.金与正:朝鲜在平安南道进行了武器试射

4.土耳其议会批准将派驻利比亚的土军驻扎期限延长18个月

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