According to the results of quantum chemistry calculation and the present research status in the relationship between the structures and the functions of DT, the El 54 in DT catalyzing domain was mutated to aspartic acid and arginine in order to study the effects of the alteration on the biological activities.

在量子化學(xué)計(jì)算的基礎(chǔ)上亚洲国产精彩视频，結(jié)合目前關(guān)于白喉毒素結(jié)構(gòu)與功能的研究狀況乱伦视频APP，選擇把白喉毒素催化區(qū)的第154位谷氨酸分別突變?yōu)樘於彼岷途彼幔芯看颂庪姾尚再|(zhì)的改變對(duì)生物活性的影響97免费视频人妻无码一区。

With the development of life science and biological engineering, chiral separation and recognition have been payed close attention universally ,which have important significance in organic chemis- try, life science and medicinal chemistry.

隨著生命科學(xué)和生物工程的發(fā)展久久AV先锋影音资源网站，手性拆分和手性識(shí)別引起了人們的普遍關(guān)注，研究對(duì)映體拆分與識(shí)別對(duì)有機(jī)化學(xué)国产手机小视频看片、生命科學(xué)和醫(yī)藥工業(yè)均具有十分重要的意義玖玖资源网在线。

By analyzing the shortage of the analytical chemistry experiment education of the profession of exploitating biological resources , and reference to the didactical experience of this course, this article discusses many parts of teaching of the course adequately such as the request、and the content and didactical method,and so on.

通過(guò)分析當(dāng)前生物資源開(kāi)發(fā)專業(yè)分析化學(xué)實(shí)驗(yàn)教學(xué)中存在的問(wèn)題欧美一级情欲视频，結(jié)合生物資源開(kāi)發(fā)專業(yè)的分析化學(xué)實(shí)驗(yàn)的教學(xué)經(jīng)驗(yàn)黄色毛片ww，從實(shí)驗(yàn)的要求、內(nèi)容及教學(xué)方法等方面對(duì)生物資源開(kāi)發(fā)專業(yè)的分析化學(xué)實(shí)驗(yàn)教學(xué)進(jìn)行了深入的探討女同一区二区三区。

Study on electroanalytical chemistry of small biological molecules.Ⅱ.

生物小分子的電分析化學(xué)研究Ⅱjiuse901。

Recent study proved that the thickness, microstructure, chemistry composition of oxide film can affected the biological corrosion-resistance ability, hydrophile property and bioactive macro molecule absorption, then affected the biocompatibility and the match process in the body.

目前的研究認(rèn)為鈦表面氧化膜的厚度、微觀結(jié)構(gòu)免费性爱a片在线、化學(xué)成分及TiO_2的結(jié)構(gòu)類型等亚洲欧美一区二区日韩另，與材料的耐腐蝕性、表面親水性和生物大分子的選擇性吸附有著直接的關(guān)系国产毛片无码特级毛片无码，進(jìn)而影響到鈦的生物相容性以及在體內(nèi)的愈合過(guò)程。

With the help of the rich and varied supramolecule, organic substances, inorganic substance, polymer and biological substance and so on, it can make various design of modifying layers on the surface of electrode. It includes multivariate, multilayers, polycomponent, micronize, etc. That will make the detection more sensitive and more widely applied in analytic chemistry.

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Through seawater pCO_2 time series observations along with the surface water chemistry, we observed significant diurnal changes of surface pCO_2 ranging from -10μatm in the oligotrophic SCS, 50-150 uatm in Xiamen Bay and Shenhu Bay, up to as high as 600μatm in the coral reef system at Xisha Islands. Processes that modulate the pCO_2 diurnal variations are significantly different between sites, which can be grouped into three categories: temperature control, tide / current control and biological control.

我們的實(shí)驗(yàn)結(jié)果表明99热这里只有精品国产首页，所有觀測(cè)區(qū)域均表現(xiàn)出顯著的pCO_2周日變化，變化幅度從-10μatm到600μatm不等人人操人人干在线观看，其中国产九九av，南海北部寡營(yíng)養(yǎng)鹽開(kāi)闊海域的pCO_2變化幅度約為10μatm，以廈門灣亚洲黄色网站1、深滬灣為代表的海灣河口區(qū)域的pCO_2變化幅度為50-150μatm亚洲国产一级理论片在线播放，而西沙群島珊瑚礁生態(tài)系統(tǒng)的pCO_2的周日變化幅度高達(dá)600μatm以上。

The nutrient value of Pholiota adiposa mycelia cultivated at 25℃, pH=6.0 and cultivated for 4d was higher. The amino acids score, chemistry score, essential amino acids index, biological value, Nutritional index and score of ratio coefficient of amino acid of its protein were 91.0, 70.6, 88.36, 84.61, 40.34 and 78.75 respectively.

本文測(cè)定了不同培養(yǎng)時(shí)間和PH值的黃傘菌絲蛋白質(zhì)的含量及其氨基酸組成黄色色色色色色色网站，并采用國(guó)際上通用的評(píng)價(jià)方法對(duì)不同培養(yǎng)條件的黃傘菌絲蛋白質(zhì)營(yíng)養(yǎng)價(jià)值進(jìn)行了全面的評(píng)價(jià)色色爱视频，為黃傘資源的開(kāi)發(fā)利用和科學(xué)研究提供可靠的理論依據(jù)。

Transition metal Pyrazolyl ligands have attracted considerable attention as in catalysis, magnetic coupling, biological mimicry, electron transfer, optic-physics area because of pyrazolyl ligands have luxuriant self-assembly chemistry and as a kind of multifunctional organic ligand.

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PH, dissolved oxygen and chemical indexes for instance total nitrogens, total phosphorus, chemistry oxygen depletion; appraised phytoplankton species complexity; numerated phytoplankton cell density; analyzed various kinds of biological diversities.

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