物
- 与 物 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Generally, we calculate the concentration of persistent organic pollutants, which is very low in the water by the concentration of organism or sediment under equilibrium condition.
通常,水体中极低含量的持久性有机污染物的浓度可以用平衡条件下的生物体内或沉积物中的污染物浓度来推算,即应用生物监测或沉积物分析方法。
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Determination of the equilibrium constant of a coordinated compound.
四、铁离子与磺基水扬酸配合物的组成和标准稳定常数的测定,了解用比色法测定配合物的组成和配离子稳定常数的原理和方法,掌握分光光度计的使用及有关试验数据的处理方法。
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The following points are emphasized:The operation models of adiabatic and diabatic distillation have been set up and the operation block, thermodynamics model and mathematical model in the simulation have been determined as well;(2)Based on the simulation and exergy analysis with Aspen Plus program, shortcut distillation design—DSTWU model and rigorous distillation design—RADFRAC model, the author has determined the heat duty, exergy losses and the distribution of exergy losses along the adiabatic column, which will help the simulation and optimization of the diabatic distillation;(3)Diabatic distillation under various operation conditions has been simulated by using energy balance method and exergy analysis;(4)How the different mixture and the various degree of separation, number of trays and feed location influence exergy saving in diabatic distillation have also been discussed;(5)On the basis of the total exergy losses along the column, different schema of the heat transfer distribution along the column have been compared and analyzed;they can be classified in three categories: heat duty equipartition approach, empirical approach, separation degree matching approach. In conclusion, different heat transfer distribution along the column will have effect on total exergy losses. In particular, most satisfactory results have been obtained by using separation degree matching approach. In order to diminish the exergy losses, heat transfer distribution should meet the needs of the request of separation degree.And on this premise, the author makes his suggestion in increasing the proportion of heat supplied to the tray with minimum exergy losses and decreasing the proportion of heat supplied to the tray with the maximum exergy losses.
本文对透热精馏过程进行了模拟并对其节能效果的影响因素做了较为全面的分析和深入的研究,主要研究内容如下:(1)建立了常规精馏和透热精馏过程的模拟操作模块、热力学模型以及数学模型;(2)利用化工模拟软件Aspen Plus并分别采用DSTWU简捷模型和RADFRAC严格计算模型对常规精馏进行模拟计算和有效能分析,确定常规精馏塔的公用工程热负荷、有效能损失及有效能损失在塔内的分布,为透热精馏的模拟和优化提供数据参考;(3)对不同物系在不同分离度条件下进行透热精馏的模拟,分别采用能量衡算法和有效能分析法进行计算和分析;(4)探讨了各种因素如物系的选择、不同分离度、塔板数、进料位置对透热精馏节能效果的影响;(5)以全塔总有效能损失为比较基准,对热量在塔内的三种分布方案即热负荷平均分配法、经验法和分离度匹配法进行了对比分析并得出结论:塔内热量的不同分布方案对于全塔总有效能损失会产生影响,其中以分离度匹配法的节能效果最为理想,为减少有效能的损失,应使塔内的热量分布满足各塔板的分离度要求,并在此前提下,尽量减小有效能损失大的塔板的热负荷和增加有效能损失小的塔板的热负荷。
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Additionally, the activities of deltoid, trapeizus and erector spinae were higher in asymmetrical conditions as compared with in symmetrical conditions.
此外,三角肌、斜方肌及背脊肌的反应量在非对称持物姿势下明显高於对称持物姿势下的反应量。
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In borate solution, The order of effective mobilities of disaccharide-borate compolexes was saccharose<celloiose< maltose<lactose and that of polylol- borate complexes was ethylene glycol< propanetriol<erythritol<sorbitol<mannitol<dulcitol.
在碱性四硼酸钠溶液中二糖硼酸络合物淌度顺序为:乳糖>麦芽糖>纤维二糖>蔗糖,多元醇硼酸络合物的淌度顺序为:六羟基多元醇>四羟基多元醇>三羟基多元醇>二羟基多元醇。
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The invention further includes pharmaceutical compositions comprising the fusion protein and methods of using the fusion protein and/or the pharmaceutical compositions, for example to stimulate erythropoiesis in subjects in need of therapy.
本发明进一步包括包含所述融合蛋白的药物组合物,和使用所述融合蛋白和/或所述药物组合物(例如在需要治疗的受试者中刺激红细胞生成)的方法。
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To investigate the pollution levels, occurrence and distribution of estrogens, six estrogens in the surface sediments of Wenyuhe River were analyzed quantitatively by GC/MS following ultrasonicated extraction including diethylstilbestrol, estrone(E1),β-estradiol(E2), 17α-ethynylestradiol(EE2), estriol(E3), and β-estradiol 17-valerate. Six estrogen concentrations ranged from 0.39-36.6ng/g and the mean concentration was 10.2ng/g.
为了调查温榆河沉积物中雌激素物质的污染状况,采用超声萃取、GC/MS法研究了6种常用雌激素(包括己烯雌酚DES、雌酮E1、雌二醇E2、乙炔基雌二醇EE2、雌三醇E3和戊酸雌二醇EV)在北京温榆河上游及干流表层沉积物中的含量水平,并对其分布及来源情况进行了分析。
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BPA is a substrate for estrogen sulfotransferase, and bisphenol A sulfate and disulfate are substrates for estrone sulfatase.
BPA是一个雌激素磺酸转移酶的底物,且二苯A硫酸盐和脱硫酸盐是雌激素酮硫酸酯酶的底物。
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The UV-Visible absorption spectra and the fluorescence emission spectra of sixteen tetra-substituted metallo-phthalocyanine complexes {R4PcM, where R=2-[4-(2-sulfonic ethyl)piperazin-1-] ethoxyl, 2-(piperidin-1-yl)ethoxyl; substitution position at α-position and β-position of phthalocyanine ring; M=Zn, Ni, Coand Cu} were measured.
报道了16种含哌嗪或含哌啶四取代酞菁金属配合物{R4PcM, R=2-[4-(2-磺基乙基)哌嗪-1-基]乙氧基、 2-(哌啶-1-基)乙氧基;取代位置分别在α位和β位; M=Zn, Ni, Co, Cu}的UV-Vis吸收光谱和荧光发射光谱的测定,探讨了中心金属离子、取代基种类及其取代位置、溶剂等因素对酞菁金属配合物UV-Vis吸收光谱和荧光发射光谱性质的影响。
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In this study we use the oligomers of amino ethylene series as matrix and introduce dithiocarbamate group to adsorb merely heavy metal ions. Because of its special structural characteristics , dithiocarbamate can combine with a great number of heavy metal ions to produce insoluble complex compound except for alkali metals and alkaline earth metals.
本研究系将氨基乙烯系列之寡聚物(oligomers of amino ethylene series)当做基质引入只对重金属离子具有特殊螯合能力之荒酸盐,除了与碱金属及碱土族外荒酸盐与其他重金属离子都能形成不溶性错合物。
- 推荐网络例句
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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.
Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。
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I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.
我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。
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The shamrock is the symbol of Ireland and of St.
三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。