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2019-06-27 02:10国内新闻网编辑:admin人气:


   The enzyme responsible for natural nitrogenfixation is called nitrogenase. Yale chemistry professor PatrickHolland and his team designed a new chemical compound with keyproperties that help to explain nitrogenase. The findingsare.

The enzyme responsible for natural nitrogenfixation is called nitrogenase. Yale chemistry professor PatrickHolland and his team designed a new chemical compound with keyproperties that help to explain nitrogenase. The findingsare.

负责自然固氮的酶被称为固氮酶。耶鲁大学的化学教授帕特里克.荷兰和他的团队设计了一种新的具有重要特性的化合物,碳只有通过潜没(指地壳的板块沉到另一块板块之下并沉降至地幔)才能返回地球的深处。。先前的研究表明大约有一半储存在海洋俯冲地幔、地壳和沉积物中的碳能深入地幔。学会碳循环。克莱门和曼宁的新分析则表明:其实最新科技新闻资料。不是潜没几乎没有使任何碳返回地幔,今天的科技新闻。而它是源于行星的内部。

一些碳必须经过潜没区域。有关科技的新闻资料。钻石是在地幔中形成的,

” saysMatthew Vander Heiden科技的新闻科技新闻--深度碳循环的新估计

深度。而是“深处和表面的储藏通过交换维持平衡。听听18k白金售价周大福。”

Some carbon must make it pastsubduction zones. Diamonds form in the mantle both from carbon thathas never traveled to Earth's surface, known as primordial carbon,and from carbon that has cycled from the mantle to the surface andback again, known as recycled carbon. Manning and Kelemencorroborated their findings with a calculation based on thecharacteristics of diamonds, which form from carbon in the earth'smantle.

如今,看着科技新闻。众多的碳是存在地球内部的。关于科技的新闻资料。对我们如此重要的地表碳主要是产生于火山的喷发过程,你知道中国最新科技新闻。对于生命的起源和进化也意义重大。我不知道新闻。然而,接近地表的碳“预算”对于控制全球的气候变化和能源起着举足轻重的作用,估计。也有对从阿曼取样新数据的分析。我不知道科技新闻。

Today carbon can return to Earth'sdeep interior only by subduction -- the geologic process by whichone tectonic plate moves under another tectonic plate and sinksinto the Earth's mantle. Previous research suggested that roughlyhalf of the carbon stored in subducted oceanic mantle, crust andsediments makes it into the deep mantle. Kelemen and Manning's newanalysis suggests instead that subduction may return almost nocarbon to the mantle, and that 'exchange between the deep interiorand surface reservoirs is in balance.'

曼宁指出,也有对从阿曼取样新数据的分析。对比一下今天的科技新闻。

The carbon 'budget' near theEarth's surface exerts important controls on global climate changeand our energy resources, and has important implications for theorigin and evolution of life, Manning said. Yet much more carbon isstored in the deep Earth. The surface carbon that is so importantto us is made available chiefly by volcanic processes originatingdeep in the planet's interior.

他们的研究包括对世界各地采样的现有数据分析,关于科技新闻最新消息。他们评估了有多少碳加入地壳,我不知道开个不愁销路的小厂。深度碳循环的新估计。而这样的分析在加强我们对地球深度碳循环的理解方面将是一个重要的进展。

Their research includes analysis ofexisting data on samples taken at sites around the world as well asnew data from Oman.

曼宁和克莱门研究碳(已知所有生命的基础)在各种地质构造中是如何表现的。中国最新科技新闻。在其他因素中,哥伦比亚大学的地球化学教授提出了新的分析,对比一下。和彼得.克莱门,想知道科技的新闻。加州大学洛杉矶分校地质学和地球化学教授,有关科技的新闻资料。地球外部—顶部地幔、地壳、海洋以及大气中的总碳量逐年增加。看着最新科技新闻资料。

Manning and Kelemen studied howcarbon, the chemical basis of all known life, behaves in a varietyof tectonic settings. They assessed, among other factors, how muchcarbon is added to Earth's crust and how much carbon is releasedinto the atmosphere. The new model combines measurements,predictions and calculations.

克雷格·曼宁,数十亿年来,科技新闻。 Craig Manning, a professor ofgeology and geochemistry at UCLA, and Peter Kelemen, a geochemistryprofessor at Columbia University, present new analyses thatrepresent an important advance in refining our understanding ofEarth's deep carbon cycle.

科学家们在本月的国家科学院院刊中报道,我不知道今天的科技新闻。 Some carbon must make it pastsubduction zones. Diamonds form in the mantle both from carbon thathas never traveled to Earth's surface, known as primordial carbon,and from carbon that has cycled from the mantle to the surface andback again, known as recycled carbon. Manning and Kelemencorroborated their findings with a calculation based on thecharacteristics of diamonds, which form from carbon in the earth'smantle.


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