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听力等级

科学研究   

2024-08-27   Intermediate
An Indirect Way to Tame Cancer, Part Three

Keywords:

Rakesh Jain: We said – we asked the questions what molecules in our body control the production of collagen, and the growth factor that is the master regulator of collagen is known as TGF beta, transf...

Rakesh Jain:我们说——我们问了我们体内的哪些分子控制胶原蛋白的产生,而作为胶原蛋白主要调节因子的生长因子被称为 TGF β,即转化生长因子 β。 因此,我们开始在文献中寻找 FDA 批准的药物可以阻断 TGF β 的活性,事实上...


2024-08-27   Video
What Would Happen If We Terraformed the Sahara Desert

Keywords:

In an effort to fight climate change, the Sahara Desert could be going green... literally. Plans are being made to terraform the entire Sahara desert; changing it from a dry, barren land...

为了应对气候变化,撒哈拉沙漠可以走向绿色。 。 。 。 。 。 按照字面。 正在制定 terraform 计划整个撒哈拉沙漠;把它从干燥、贫瘠的景观到郁郁葱葱的绿色空间。 如果成功,则转换可以删除每年 76 亿吨大气碳。 我们如何改变自然如...


2024-08-25   Intermediate
An Indirect Way to Tame Cancer, Part Two

Keywords:

Rakesh Jain: But in addition, even if the drugs get into the hypoxic region, somehow you could do that, they stop functioning there, because a lot of the drugs, for them to function they require oxyge...

Rakesh Jain:但除此之外,即使药物进入了缺氧区域,不知何故,它们也会在那里停止运作,因为很多药物需要氧气才能发挥作用。 辐射也是如此;放射疗法是最常见的癌症治疗方法,需要氧气。 因为辐射的作用是将氧转化为所谓的氧自由基,这就是导致...


2024-08-25   Video
What Would Happen If Earth Was Inside of a Nebula

Keywords:

If you could teleport the Earth to any place in the Universe, what would you want to look at in the night sky? The bright explosion of a supernova? A black hole passing over your house?...

如果你能传送地球到宇宙中的任何一个地方,你想看什么在夜空中?超新星的明亮爆炸?一个黑洞从你的房子上经过?星云怎么样?这朵华丽的气体云近距离看什么?如果地球在里面,地球会如何变化?这就是 WHAT IF,以下是将要发生的事情如果我们生活在星云...


2024-08-23   Intermediate
An Indirect Way to Tame Cancer, Part One

Keywords:

Steve Mirsky: Cancer therapy is almost always looked at as a molecular issue. When we hear about a new cancer drug it’s usually a molecule. And your attempts to deal with cancer obviously are molecu...

Steve Mirsky:癌症治疗几乎总是被视为一个分子问题。 当我们听说一种新的抗癌药物时,它通常是一种分子。 您处理癌症的尝试显然本质上是分子的,但它们是在结构考虑和物理学的背景下进行的。 Rakesh Jain:是的。 我们的想法是,...


2024-08-21   Intermediate
The Paradox of an Infinite Universe, Part Two

Keywords:

How big would such a hyper donut universe be? Well, because of its strange geometry, actually this is kind of the smallest possible universe – potentially just a few times bigger than th...

这样一个超级甜甜圈宇宙会有多大是?嗯,因为它的几何形状很奇怪,实际上,这是尽可能小的宇宙 – 可能只是大几倍而不是可观测的宇宙。 但它可能会也要 WAY, WAY GREATER。 不知道。 还行。 对于有限的宇宙来说,就这么多了。 但。 ...


2024-08-21   Video
What Would Happen If We Built A Ringworld In Space

Keywords:

The Earth may not be our home forever. Eventually, we may have to leave. What if instead of finding a potentially habitable exoplanet light-years away, we stayed in our Solar System a...

地球可能不会永远是我们家。 最终,我们可能不得不离开。 What if 而不是找到可能宜居的系外行星光年之外,我们待在太阳系里并建造了一个如此巨大的栖息地我们永远不能让它人口过多?这就是 WHAT IF,以下是将要发生的事情如果我们在太空中...


2024-08-19   Intermediate
The Paradox of an Infinite Universe, Part One

Keywords:

Is the universe infinite? Does it have an edge? And if so, what would you see if you went there? Today we know that the universe had a beginning 14 billion years ago and that it's been exp...

宇宙是无限的吗?它有优势吗?如果是这样,如果你去了那里,你会看到什么?今天我们知道宇宙有一个开始140 亿年前,一直如此从那时起不断扩大。 但expanding 也应该有一条边,对吧?嗯,有点像。 信息的传播速度不能超过光速。 那意味着我们...


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