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Other recent vampire movies include the American film "Cirque du Freak: The Vampire's Assistant", the Swedish film "Let the Right One In" and the Korean film "Thirst."
VOA: special.2010.01.20
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And in particular let's look at, for example, du/dV du/dV at constant temperature.
更特殊一点考察，恒定温度下的。
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du=dq+dw So our first law, du is dq plus dw.
热力学第一定律。
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Other blacks liked the stronger ideas of William Du Bois.
VOA: special.2011.01.20
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And this is--God, I love this--one picture, you first see the first picture you can actually see of Paris, the faubourg du temple.
这个是,天啊,我爱死这张了,这是你能看到的巴黎的第一张照片,在圣殿郊区街拍的
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"Historically it's one of the most important parts of the period of World War II in France,the roundup - the rafle du Vel dHiv - is a symbol of collaboration between the French police and the German occupying authorities."
VOA: standard.2010.04.10
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I suggested that there was a critical response to those issues that was somewhat negative, and I want to sort of remind you of that from W. E. B. Du Bois's review of Black Boy when it came out.
对于负面问题,有个关键评述，大家看一下,关于《黑孩子》的评论。
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I was just yesterday-- I gave a talk in Montreal at the Caisse de Dep?t,et Placement du Quebec, which is the big wealth management fund for the Province of Quebec.
昨天，我刚在蒙特利的魁北克储蓄投资集团,做了一个讲演，这个投资集团是魁北克省的,一所大型财产管理基金机构。
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dU=CvdT So du is still going to be equal to Cv dT, and we're still going to be able to use the first law, all these things don't matter where the path is.
于是，第一定律也依旧成立，这些关系都与路径无关。
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du, it's an ideal gas. So this is Cv dT and of UB course we can just integrate this straight away.
因此这是CvdT，当然我们可以,直接算出这个积分，那么△
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So we can now take this expression and rewrite it under the condition of du is equal to zero.
我们利用这个公式,并在du=0的条件下将它重写。
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dU=CvdT pV=RT So I can write du is Cv dT and pV is equal to RT.
于是。
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It's constant pressure. OK, so now, last time you looked at the Joule expansion to teach you how to relate derivatives like du/dV.
这是恒压的，好，上节课你们,学习了焦耳定律,以及怎样进行导数间的变换。
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So what I'm saying is that du through path 1 plus du going through path 3.
于是1,因为能量。
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So what we've discovered from this relationship dq that du at constant volume is equal to dq v.
从这个关系式里我们发现,恒体积时的du等于恒体积时的。
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And as France held its breath,because they wanted a boy, this miracle baby was born,l'enfant du miracle.
法国十分紧张,他们想要一个男孩儿,然后这个孩子诞生了,奇迹之子
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dU=dq+dw Still know that du is dq plus dw.
所以。
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du But if it's not reversible, it's not du.
但如果这不是可逆过程，它不等于。
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du If you measure something else, you won't get du.
如果你测量其它量，得到的就不是。
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du And we can say du for the surroundings.
下面讨论环境的。
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du So, we can also write delta u as integral from 1 to 2 of du.
我们也可以将Δu写成,从1到2的积分。
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J'ai toujours admire la supreme l'oeuvre ormonde du sublime Dublinois.
我总是羡慕来自神圣都柏林的奥蒙德那些高尚的作品。
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du=0 Delta u sub 3 is, for an ideal gas.
就是。
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du=0 So that implies du is equal to zero.
因此。
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dU=-pdV So du is just minus p dV.
于是。
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dq=0 But if it's adiabatic, then dq is equal zero, du=dw and for an adiabatic process, then du is equal to dw.
但如果它是绝热的，那么，因此对于绝热过程。
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dU=dq+dw Well from the first law, du is equal to dq plus dw, and I wrote down everything I knew at the beginning here.
第一定律“,前面我们已经,看到了。
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One is, du, u is called the internal energy dw or just the energy, is equal to dq plus dw.
其中一个是：du，u是内能,或能量，等于dq加上。
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v du/dV under constant temperature. du/dT v under constant volume. You use the Joule expansion to find these quantities.
像偏u偏v，恒温下的偏u偏,恒容下的偏u偏,你们知道怎么运用焦耳定律。
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du du for path number 2.
关注。
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