活性中心

Arsenic poisoning have magma role to paralysis small blood vessels,mercapto Jimei inhibit the activity of the liver and fat necrosischange Hepatic Lobules Centre, heart, liver, kidney, intestinecongestion, epithelial cell necrosis, telangiectasia.

砒霜有原浆毒作用，能麻痹细血管，抑制巯基梅的活性，并使肝脏脂变肝小叶中心坏死，心、肝、肾、肠充血，上皮细胞坏死，毛细血管扩张。

Arsenic poisoning have magma role to paralysis small blood vessels, mercapto Jimei inh ibit the activity of the liver and fat necrosis change Hepatic Lobules Centre, heart, liver, kidney, intestine congestion, epithelial cell necrosis, telangiectasia.

砒霜有原浆毒作用，能麻痹细血管，抑制巯基梅的活性，并使肝脏脂变肝小叶中心坏死，心、肝、肾、肠充血，上皮细胞坏死，毛细血管扩张。

O PSII supercomplex was formed in the plant grown in iron depletion solution. After treatment with NO, all of the above injuries of plant due to iron deficiency were reverted, such as the increase of active reaction center of PSII, the reconnection of PSII with antenna, the increased electron transport rate, the increased photochemical fluorescence quenching and the reduced non-photochemical fluorescence quenching.

O处理后，植物受到的所有缺铁损伤都得到恢复，有活性的PSII反应中心数量增加，与天线的连接恢复完好，电子传递效率增高，同时叶绿素荧光的光化学淬灭增多，非光化学淬灭降低，表明PSII下游的电子传递体也得到很好的修复。

The coordination geometry of the Eu atom is best described as a strongly distorted square-antipyrism.. The two Eu atoms are bridged by two N-oxide oxygen atoms forming a dimeric unit with crystallographic inversions centre. The Eu……Eu distance is 4.2137(9)〓. The two europium atoms and two bridging oxygen atoms is coplanar. The angles of Eu(1)-O(7)-Eu(1A) and O(7)-Eu(1)-O(7A) are 117.82(14)° and 62.18(14)°, respectively. 15 is the first dinuclear triboluminescent lanthanide complex reported.

同时还测定了其摩擦发光光谱与其光致发光光谱，并讨论了晶体结构和摩擦发光活性之间的关系。X-射线结构分析表明，15为有对称中心结构的配合物，每个Eu与三个HTTA的六个O原子和两个PyO的两个O原子形成八配位的四方反锥几何构型，2个N-Oxide O原子桥联两个Eu，形成了一个双核配合物，Eu。。。。

Diltiazem is an important coronary vasodilating drug and contains two chiral centers while only the (2S, 3S)-isomer has the desired activity.

地尔硫卓是重要的心血管药物，在其分子结构中含有2个手性中心，可产生4个立体异构体，其中只有(2S， 3S)－异构体具有药理活性，因此其立体选择性合成具有很大的挑战性。

Measurement of fluorescence of PS Ⅱ Reaction Center indicated F/F and F/F decreased in both alfalfas under drought stress.

3对叶绿素荧光参数的研究表明：干旱胁迫下两种紫花苜蓿PSⅡ反应中心光化学效率F(下标 v/F、PSⅡ潜在活性F

Quenching of chlorophyll fluorescence decreased and Non-photochemical Quenching of chlorophyll fluorescence increased for both alfalfas under drought stress. Generally speaking, qP decreased less and qN increased more in the high drought-resistance alfalfa than in the low drought-resistance alfalfa, suggesting that when under drought stress, the electron transport activity and photosynthetic apparatus was damaged less in the alfalfa with high drought-resistance than in the alfalfa with low drought- resistance.

PSⅡ光化学淬灭系数、非光化学淬灭系数的变化表现为干旱胁迫下两种紫花苜蓿qP值降低、qN值升高，总体上抗旱性强的紫花苜蓿qP降低的幅度低且qN升高幅度大，表明抗旱性强的紫花苜蓿PSⅡ反应中心电子传递活性受到的影响小，光合机构的损伤程度低。

L〓 can accept the electron from the active PS Ⅱ center completely, and that DCBQ can only accept a part of the electron from the inactive PS Ⅱ center (40%) even at the concentration 120μ mol.

但DCBQ的浓度在比Cao等几乎高出一个数量级（120μmol.L〓）的情况下，也只接受部分无活性PS Ⅱ中心的电子（40％）。

8Ps for native and NaBH〓 chemically modified reaction centers, and the transfer process from H〓 to the final electron acceptor Q〓 occurs in about hundreds of picoseconds. On the other hand, the energy transfer from excited B was obviously slowed down in the pheophytin-exchanged RC. By considering the change of free energy of ion pair P〓Phe〓, it could be expected there might exist alternative pathway of charge separation and electron transfer in pigment-exchanged reaction center. In addition, the influence of acid environment on the ultrafast dynamics of reaction center was also experimentally observed, which shows an evident difference from that of in native RC, and further investigation should be carried out to elucidate the origination.

在色素置换后的反应中心中，以B为起点的能量传递较天然RC的情况明显减慢，约在450fs左右，考虑到置换后的反应中心中P的自由能有所提高以及其仍然保持的光化学活性，这一较慢的能量传递也可能预示着还存在着其它的能量传递通道；另外，还对酸性处理的反应中心中的超快光动力学过程进行了尝试性的研究，发现由于色素分子的聚集以及蛋白环境的改变，BChl分子的激发态动力学过程有着明显不同于天然反应中心的情况。

Swiss Dianas Development Center is the first in the world to introduce biochemical Botox-alike non-injection botulinus, which is composed of narrow spectrum amino acid link and peptide to form the nanometer active ingredient of amino acid that can quickly penetrate into the skin to change skin structure completely, to smooth away wrinkles, to promote cell energy and tissue recovery as well as to postpone the process of ageing.

Dianas研发中心首家全球性引进生化科技Botox－alike类肉毒杆菌不必打针。由专一性氨基酸键结合六胜肽所组成纳米级氨基酸活性成份，迅速渗透入皮肤，彻底改变肤质结构，抚平皱纹，增进细胞活力，促进组织复原，延缓老化。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。