茵为有你
Simen get the visa, choose to emigrate,Nader was unable to leave because of the husband suffers Alzheimer's father despite refusing immigrants.The case disagreed, Simen decided to file for divorce, he was there to save the rest of the family judge considers to dismiss the application.Under simen had no choice but to temporarily move back to her family. Thus, nader please the nursing care of his father. But Nadar and care of a dispute, but accidentally triggered a series of storms.Tablets and no obvious who is the director also did not favor any one role,Lead us to like or dislike any role. In the story, everyone has their respective positions and difficulties. Under the protection of their own interests as well as the premise, it will hurt each other. "Every man for himself, devil take the hindmost" in the film's presentation, Nadar and care are a victim and who is the bad guys of conflicting roles.After just half of the story about the movie on the three issues to be solved, including Nadar know pregnancy care, care whether abortion Nadar cause, care for the elderly AWOL cause injury if there is wrong and so on. The story through the courts continue to mediate, to communicate with the investigation, the ugly truth is slowly revealed layers.Tablets four minutes a mirror in the end of a long shot, let the couple face up to the audience staged a family disputeCamera / viewer is the decision-maker. Nader and Simin actor actress facing "judge" arguing with each other how their divergent for family values,Also indirectly Strip out the next two hours, completely surrounds, everyone, but everyone is also not on this rather complex separation storm.Camera work very directly to the spectator point cut, the audience sees the camera,There are close to actors, as if we nearest beside, listening to arguments, but even that does not give us space to dodge, fights impatient people also followed up.Director love to use hand-held camera, and strengthen the varied and layering of images, but also to moviegoers as the emotional ups and downs and turn the lens.Each scene of the composition, in particular, many several indoor filming, the director and the aspect ratio of the lens using segmentation and deliberately create a lot of prospects,Corresponding to the actor's current mood and story connotation to show almost a perfect match, the kind of people you want to see all the delicate arrangement but highly limited,Enantiomer entire film theme, so the whole film image is full and rich abnormal strengthThe director wanted to express through the film are: between "people, to each other to determine how arbitrary and wrong people always magnify other people with their different, but when people are close to each other, you will find among them are so similar. "There are some people always make life difficult, come back story. Sometimes, even if we know what is right, but we still will not do, stuck is stuck. One of the most helpless is our fate in the face of huge simultaneously,We are not sure whether we do exactly the right choice for the next? But we do, we must do it! Withstand itNon-off right or wrong, the film frankly also honestly tell everyone,About those from the survival instinct, a necessary evil of humanity. People will not only deceive others,Will deceive his own heart, but the hearts of everyone that ruler to measure the scale is different,Created the most morally ambiguous zone; when God wants you when you start playing wildly soul Unbearable face, youSelfishness from their preservation? Or is it ... repent of love and conscience of every one can not speak to tell?
头头的奋斗
一种具有旋光性（见旋光异构）的手性分子（见手征性）与其对映体的等摩尔混合物。 手征性 手征性（chirality)即为手性。指一种化学物质同时具有两种不同的分子结构，两种分子结构互为镜像对映体，彼此间的关系就像人的左、右手。手征性是分子产生旋光性的必要条件，是生物系统基本特征之一。 旋光性英文名称：optical rotation;optical activity 定义：当光通过含有某物质的溶液时，使经过此物质的偏振光平面发生旋转的现象。可通过存在镜像形式的物质显示出来，这是由于物质内存在不对称碳原子或整个分子不对称的结果。由于这种不对称性，物质对偏振光平面有不同的折射率，因此表现出向左或向右的旋光性。利用旋光性可以对物质(如某些糖类)进行定性或定量分析。 对映体 enantiomer互为实物与镜像而不可重叠的一对异构体。如左旋乳酸与右旋乳酸是一对对映体。
甜甜起司wasabi
中文名称： 葡萄糖 右旋糖 英文名称： glucose dextrose 英文缩写： C5H11O5CHO 糖在营养学上是属于碳水化合物的一种，各种糖的分子构造都极为类似，但舌头所感觉到的甜度却大不相同。例如乳糖是牛乳中的一种糖，与一般的蔗糖都是由十二个碳原子、二十二个氢原子、十一个氧原子所组成，但前者的甜度却只有后者的十分之一。本省中部的名产「新港饴」；其主要成分是麦芽糖，分子构造也和蔗糖、乳糖相似，可是它的甜度只有蔗糖的三分之一。 乳糖、麦芽糖、蔗糖的组成，不论原子种类或者个数都相同，但彼此间的性质却回异，这是由于各个分子内原子间的结合方式不同所致。各位想想，碳有四只手，氢则只有一只手；要把这些手牵起来，可以有多少种不同的变化呢？更何况是十二个碳原子、二十二个氢原子、十一个氧原子在互相作排列组合；这可能要请数学老师来算算了。像乳糖、麦芽糖、蔗糖的组成相同，但性质却往往相去甚远的这些化合物，同学们应该还记得，我们称「同分异构物」。有机化合物中，有非常多的这类物质；也因为如此，我们的世界才会那么多采多姿。 异构物的种类有不少，其中有一种很重要的「光学异构物」；或称为「旋光异构物」和我们要谈的味觉更有直接的关系。各位一定都还记得左、右两只手正好在镜子中呈现相等的景像；但是两者在镜外却无法完全吻合。这种左右的关系称为「旋光性」。构成我们身体的各种分子，大都只有单一种的旋光性，也可以说全都属于左旋性。 能够分解、消化养分的消化脢以及调节身体内各种激能的激素，也都是具单一旋光性的分子构造，因此只能与同属于左旋性构造者起作用。人的味觉也是一样，左旋性者和右旋性者味感截然不同。 味精「甘味」的奥秘是由日本人所发现的；它其实是由大型的昆布所提炼出来的麸酸钠。麸胺酸是存在于各种食品中的重要胺基酸之一，天然生产的味精概称「L体」；也就是左旋化合物。 在化学实验室里，也可以利用化学方法从简单的化合物合成麸酸钠，但是这样制成的味精却是一点甘味也没有。因为一般合成法制造的成品中，右旋性的「D体」左旋性的「L体」各占一半，所以制造出的成品是D体和L体的等量混合物，我们称为「外消旋体」。 在奥地利的维也纳理工大学曾发生过一件有趣的事；有位访问学者在那儿尝了一下制造的味精，结果是苦得他直皱眉头，大喊受不了。维也纳理工大学的化学教授倒是挺幽默的打趣说：「是走左倾路线的；所以左边（旋）的留给自己用，右边（旋）的才输出。那些右派份子不都下放了吗？」右旋的麸酸钠是苦的，因此只要舔一下样品，就可以知道它的纯度有多高了。 不只是人，几乎所有的生物，都只能摄取左旋胺基酸及右旋糖的营养。如果像「爱丽丝梦游仙境」中的镜子国一样，什么东西都左右相反的话，我们就必须摄取右旋胺基酸及左旋糖，这样一来就连一点甜味也没有了，那该是件多乏味的事啊！ 看了一大埋东西，但甚么是右旋糖呢？ 唉！其他答案更能提供合适的答案。 糖是一类有机化合物，包括单糖（如葡萄糖等）、双糖（如蔗糖等）和多糖（如淀粉等）。 所有糖分子具一定数目的手征性碳原子（即是以共价键与四个不同基团或原子连接的碳原子），这些手征性碳原子令糖分子具不对称性。当平面偏振光穿过糖溶液时，糖分子的不对称性令平面偏振光的偏振平面旋转，我们可以用旋光计来量度以上偏振平面的旋转。 把某糖以旋光计测试，若果发现平面偏振光的偏振平面向右旋转，则该糖称为右旋糖。 for the anic pounds: if a carbon which bond with 4 different type of atom or function group it has a chiral center---- which having a special stereo--structure characteristic and an identical bonding carbon can be different from it like our left hand and right hand..... their structurally different with each other (you can imaginate: you cannot use your left hand to replace right hand if it is accidentally lost can you??) we found that all the suger having this chacteristic because all the monosaccaride(单糖) are chiral!! In nature only one kind of sugar exist due the synthesis of sugar be living ani *** can produce the enantiomer (chiral isomer) can not be it is because most of the bio-anic pound are chiral---- e.g. protein....... If you ask why it is right turn not left turn ??-- I think it is because how the scientist name it only..... 2006-11-17 18:12:18 补充： Woo Bai:you also talking about mono-sodium glutamate it is not suger!! Since sugar has chiral carbon(手征性碳) it can rotate the plane polarized light to left in the polarimeter. This sugar is called laevo-sugar or L-glucose.
来自巴厘岛的松
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米米狗狗
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