一酸的
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Ferrate is a strong and environmentally friendly oxidant, coagulant, and water treatment agent, which lead to its unprecedented future practical application in many fields.
高铁酸盐具有极强的氧化性和优良的絮凝功能,是一种优良的水处理剂,正是由于高铁酸盐在水处理方面的优异性能才使它获得了前所未有的发展前景。
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The compositions and FTIR spectral characteristics of hydrolysis product were studied using GC and FTIR. The results indicated that ASP3 is a kind of pectic polysaccharide which contained the main part of homogalacturonan fragments as "smooth regions" with galacturonic acid and rhaminose, and rhamnogalacturonan segments as "hairy regions" backbone. Galactose, arabinose, mannose and glucose were linked as arabinogalactan, galactan and arabinan, which were the mainly constitution of the branch.
实验结果表明,ASP3是一种果胶多糖,主要由光滑区和毛发区(富含中性糖侧链的鼠李半乳糖醛酸聚糖)两部分组成:GalA和Rha位于多糖分子的主链,由于Rha含量较低,大部分GalA相连形成半乳糖醛酸聚糖光滑区;Gal、Ara、Man及Glc位于多糖分子的支链,其中Gal以较高的聚合度与主链相连,Ara以还原性末端或低聚寡糖的形式与主链相连或与半乳聚糖末端相连形成阿拉伯半乳聚糖。
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The invention discloses a method for measuring seawater chemical oxygen demand by photometry, wherein the seawater exemplar is first pre-processed, then using the basic potassium hypermanganate as reaction system, the potassium permanganate is deacidized quantitatively by organics to produce manganate, using pure water or margin solution as reference ratio, measuring the absorbance an of the manganate at its maximum absorbing wave length 430 nm, drafting the A-COD value operating curve, obtaining the concentration of the organics in the water, i.e.
本发明公开了一种对海水化学需氧量进行测定的光度测定法,该方法首先将海水样品进行预处理,再以碱性高锰酸钾为反应体系,这样海水中的有机物在强碱性介质中与过量的高锰酸钾迅速反应,高锰酸钾被有机物定量还原后生成锰酸盐,以纯水或空白溶液作参比,在锰酸盐的最大吸收波长430nm处测其吸光度A,该吸光度A与海水样品中的有机物的含量具有正相关关系。
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Topological indexes of A , B , C and D were all obtained from the different combination of topological vertex degree. A QSAR equation for this series of compounds was established based on the multi-linear regression method and a new group of autocorrelation topological indexes. The results showed that the biological activity is linearly correlated with the volume and branching size of the quinclorac derivatives. Finally, new herbicide was designed based on all QSAR results.
针对应用经典结构参数和量子化学参数得出的结果不够理想的问题,对点价自相关拓扑指数进行了研究,建立了一组新型的点价自相关拓扑指数A、B、C、D;首次将该指数用于除草剂氯喹酸酯类化合物的定量构效关系研究中,建立了很好的定量构效关系方程,综合分析所有的QSAR结果设计出了潜在的新型除草剂氯喹酸烯丙酯。
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The copper atom is in a planar coordination site of [N_2O_2] and it devites from the mean plane by only 0.80 pm. Byπ-πstacking interactions, a alabastrine structure was obtained.(2)Schiff-base complex [Cu(H_2O)]·H_2O, where H3GS is the 3-carboxyl -salicylidene glycine, was synthesized and characterized by elemental analysis, IR spectra and single-crystal analysis. The crystal belongs to monoclinic system, space group P2(1)/c, a=848.46(3)pm, b=681.54(3)pm, c=1967.16(8)pm,β=95.8210(10)°, Z=4, R_1=0.0279, wR_2=0.0724. The copper atom is in a square-pyramidal field with the base
结果表明该晶系属单斜晶系,空间群P2(1)/c,晶胞参数:a=848.46(3)pm,b=681.54(3)pm,c=1967.16(8)pm,α=90°,β=95.8210(10)°,γ=90°,Z=4,R_1=0.0279,wR_2=0.0724,Cu原子位于轻微变形的四方锥场底心,底面被氮原子、酚氧原子、甘氨酸羧基的一个氧原子和一个水分子氧原子占据,而甘氨酸羧基的另一个氧原子占据相邻分子的锥顶,因而形成一维链状结构;合成了单核双聚配合物Na_2[Cu_2_2]·2H_2O ,铜三核配合物Cu_3_2·5H_2O和铜锌异三核配合物ZnCu_2_2·5H_2O,并用元素分析,IR光谱,电子光谱和磁化率测定对配合物的组
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A type of novel dis-substituted α-arylglycine derivatives was synthesized in high yields and high regioselectivity via the stepwise Friedel-Crafts reaction of phenols with N-tosyl imino ester promoted by TiCl〓.
发现在Mg/MeOH/超声波条件下,能高产率的得到N-Tos裂解后N-Boc保护的α-芳香甘氨酸衍生物,实现了一条简单、实用的合成N-Boc保护的α-芳香甘氨酸衍生物的方法。
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The role of DDAH is to break down modified amino acids Asymmetric dimethylarginine (ADMA and monomethyl arginine that are produced by the body and have been shown to inhibit NO synthase.
DDAH的作用是破坏由体内产生的被修饰的氨基酸(不对称的二甲基精氨酸和一甲基精氨酸)并已证实它可以抑制NO的合成。
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In the sixth chapter, according to our nations situations, a probing study on the development and application of natural mordenite was carried out at the aim to develop a new adsorbent carrier and reduce the cost of adsorbent preparation. The characters of natural mordenite were chemically changed by an acid. The effects of the acid solution concentration, temperature, mordenite size and treatment times on the physico-chemical characters of mordenite were undertaken. The adsorption equilibrium of CO on the character-changed natural mordenite was measured.
在第六章中,结合我国的实际情况,对天然丝光沸石的开发利用进行了探索性的研究,期望开发一种新的吸附剂载体,以降低吸附剂的制备成本,为此,对天然丝光沸石进行了酸化学改性,研究了酸溶液和浓度、温度和沸石粒度以及处理次数对丝光沸石物理化学性质的影响,测定了CO在改性丝光沸石上的吸附平衡。
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The results show that both conformations of prolyl peptide bond are not easy to transit from each other supporting the opinion that both of the BPP's bio-characters are from its conformations separately. And the function of BPP may not lie on a conformation. The other peptide bond conformations also have influence.
结果表明,脯氨酸肽键构象不易发生互变,无论哪种构象均不存在向另一种构象转变的趋势,从侧面支持了BPP具有的两种稳定的生物学作用是来自于肽键的不同构象的观点,而且BPP的生物学作用可能也不是取决于某一个肽键构象,其它脯氨酸肽键构象对其活性也存在影响。
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The conclusions are showed as followed:1. This paper demonstrated that microbe adapt better to the environment of system and have better fastness when the organic loading is variational as soon as the reaction is startuped naturally;2. Considering the relation between the activity of microorganism and temperature and taking energy into account, the reaction is runed in 24?
所得的结论如下:一、通过试验证实,采用自然挂膜启动酸化反应装置,生物膜对反应器内的环境适应能力较强,具有较强的抗负荷冲击能力;二、结合微生物活性与温度关系,并以低能耗为原则,确定反应装置运行温度为(24±1)℃;三、结合TTC-比脱氢酶活性与pH值关系,在试验研究过程中加入异波折板高效水解酸化废水处理技术的初步研究碳酸钠溶液,提高反应装置内废水的碱度,增强系统的缓冲能力。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。