- 更多网络例句与在溶液中相关的网络例句 [注:此内容来源于网络,仅供参考]
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Considering the experimental results, we start from plant and animalcule polysaccharides'structure, pharmacological activity and the structure activity relationship of polysaccharides, with emphasis on polysaccharides'macromolecule's action in solution、chain conformation 、the characters of solution、molecular weight and polysaccharides'interaction.Combining other reports on polysaccharides compounds, we have analyzed the mixing rules of polysaccharides , and brought out five possible approaches of polysaccarides mixing.
结合实验结果,本论文以植物多糖、微生物多糖的结构、药理活性以及构效关系为基础,以多糖高分子在溶液中的行为、链构象、溶液性质、分子量以及多糖在溶液中的相互作用为重点,结合大量的复合多糖研究报道,分析归纳了多糖配伍复合的规律,提出了5 个多糖复合的可能途径。
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The crystallizability and solution properties of polyacrylate depressants and their depressive effects on two waxy oils were studied. It was found that the crystallizability of PA depended on the length of its side chain and molecular weight. Gel was observed in the concentrated solution, The temperature of gelation, which was a measure of the crystallizability of PA in solution, was higher for the PA itself with stronger crystallizability.
对聚丙烯酸长链酯的结晶能力和溶液性质及其对两种含蜡油的降凝效果进行了研究,发现PA的结晶能力取决于PA侧链长度和相对分子质量,而其在溶液中形成冻胶或沉淀的温度(反映PA在溶液中的结晶能力)与PA本体的结晶能力有关,而PA对含蜡油的降凝效果则与PA在油中的结晶能力有关。
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The rheological character of a polymer often appears as shear-thinning. Most polymers behaviour in a solution can be explained by the polymer chain or hard sphere theory. Other than that, shear-thickening polymer solution also exists. Its behavior can be explained by dilatant theory, which suggests that the shear-thickening of the solution is due to the swelling of the polymer particles. This phenomenon often occurs in suspension or emulsion. Solution exhibits a mixed behavior can also be found whose behavior is such that shear-thinning occurs under low shear force and shear-thickening occurs under high shear force. Under this circumstance, the viscosity versus shear force graph exhibits a spoon shaped curve. The rheological study can be applied to the dispersion of paint which can predict the dispersion effect of various polymer materials in solution.
中文摘要一般高分子聚合物溶液的流变行为多半呈现剪稀(shear-thinning)的现象,而大部分的高分子在溶液中的行为是以分子链或是硬球观点来解释,另外也有剪稠(shear-thickening)现象的高分子溶液,其流变行为则是以膨胀体观点来解释,即在高剪切力下,由於高分子团体积变大而使溶液黏度升高,这在悬伏液、乳液等常见;但也有在低剪切力下,溶液具有剪稀的行为,而在高剪切力下却成现剪稠的行为,在黏度对剪切力作图时,会呈现出一个勾形曲线的图形;流变行为的探讨可应用在涂布材料的分散技术上,以推测不同的高分子溶液对分散效果的影响。
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In this research, the spider silk from the major ampullate gland of native Nephila pilipes was collected via the forced-silking apparatus at the reeling speed of 3 m/min. The obtained silk was dissolved in hexafluoro-isopropanol. The influence of pH and temperature over the secondary structure of the silk protein in solution state was examined via Circular Dichroism. The effect of silk concentration and electrical field strength on the structure conformation of silk protein during film casting process was investigated via FT-IR. During the drying process, the increase of silk concentration and the presence of electric field tend to form β-sheet and β-turn. Finally, the dried film of silk protein was treated with different temperatures and cation solutions to study the post-treatment effects.
本研究所采用之蜘蛛丝蛋白质系取自本土品种人面蜘蛛之大囊壶腺体,以3 m/min之卷丝速度强迫取丝(forced-silking)收集蜘蛛丝,再将纤维溶於六氟异丙醇溶剂中配制成溶液,以圆二色光谱仪分析在不同 pH 值与温度条件下丝蛋白质在溶液中之二级结构变化,再将蜘蛛丝溶液以不同浓度及电场强度下乾燥成薄膜后,以傅立叶红外线光谱仪检测分析丝蛋白质在固体状态下之二级结构,最后以不同温度加温、离子溶液浸泡等条件对乾燥所得之薄膜进行后处理,并分析其二级结构之变化。
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In aqueous phase both bilayer and domelike vesicles with a mean diameter of 45 nm were observed, whereas in air the structure was more complicated depending on the initial concentration of vesicles.
在溶液中观察到直径为45 nm的囊泡以及沉积在云母表面的双分子层,而在空气中形成的结构则比较复杂,它与囊泡溶液的起始浓度有关。
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The oxidant 〓 plays indirect role in dissolving gold, and mainly controls the mix potential of Au in the alkaline thiourea solution. In which the "mix potential"is the decisive factor affecting the dissolution of gold. The reaction driving force is enough to have formamidine disulfide oxidize Au to Au〓 at the potential of about 0.4V. And then thiourea molecular complexes with Au〓 ion soon, which causes the fast dissolution of gold in the alkaline thiourea media. The dissolved weight of gold in 0.25 M thiourea solution with 0.05M Na〓SO〓 and 0.1M 〓 of pH 12. 5 by air at the temperature of 303K is 7. 8mg·cm〓 within 1hr.
在碱性硫脲溶金过程不起直接作用,而是通过S〓O〓来控制二硫甲脒有效形成的金在溶液中的混合电位;&混合电位&是影响碱性硫脲溶液溶金与否的决定性因素,在0.4V左右,有足够的推动力致使二硫甲脒氧化Au成Au〓,随后硫脲与Au〓络合形成稳定的络离子Au〓,从而使金快速溶解;温度为303K、pH为12.5时,在含0.05MNa〓SO〓、0.1M 〓及0.25M硫脲的溶液中,鼓入空气,金的溶解量在1hr内为7.8mg·cm〓;铜只有微量溶解,银、镍、铁则几乎不溶解。
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According to Johnson's Rule and IR spectra, their possible structures are suggested. The bonding parameters of those complexes are calculated by ESR parameters. And the crystal field parameters are calculated by using electronic spectral data. It can be seen that the vanadyl complexes in the solution are ionic complexes and that the α〓 values of those complexes decrease following the increasing of the N donor replacing the O donor of water on the equatorial plane in those complexes. This means that the covalent bonding between vanadium and ligand increases as Ser, Phen or Bipy replace water ligands. The results show the competitive coordinate law that the coordination reactivity of Phen and Bipy is much stronger than that of Ser. The simulation program of ESR is compiled by the theory of ESR in the present work.
测定了VO-丝氨酸二元体系、VO-丝氨酸-邻菲咯啉三元体系和VO-丝氨酸联吡啶三元体系在不同酸度下(pH=1.0~14.0)的乙二醇/水(V/V=1:1)溶液低温ESR谱,发现不同pH下,溶液中具有不同组成的配合物,根据不同pH下ESR谱的变化,利用Johnson的加合规则并结合红外光谱,推测了它们在溶液中的可能结构;利用波谱参数计算了配合物键参数;利用电子光谱数据计算了配合物的晶体场参数,讨沦了它们的成配特性,结果表明:VO配合物属离子型配合物,随取代水分子的配体(Ser、Phen或Bipy)数目增加,键参数减小,配合物共价性增强,同时得出这些体系中,生物配体竞争配位规律:Phen和Bipy与VO的配位能力比Ser强。
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In a medium of pH 8.6 tris-HCl buffer,azur B gets aggregation in the presence of sodium hexametaphosphate,which results in a color change from sky blue to purple gradually.
在pH8.6的Tris-HCl缓冲溶液中,六偏磷酸钠使天青B在溶液中发生聚集,溶液由天蓝色逐渐变为紫色,体系的吸光度降低,光散射增强。
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The mechanism of carbonization process of aluminate solution was analyzed thermodynamically. The results show that the internal reason of precipitation of Al3 in the process is its spontaneous nucleation caused by supersaturation of aluminate solution. The behaviors of SiO2 in the process are in accordance with that from published experiment, which implies that the content of product SiO2 from carbonization depends on its solubility but is not the result of absorption. The thermodynamic calculation for forming Na2O·Al2O3·2CO2· n H2O was achieved.
摘 要:为对高浓度铝酸钠溶液碳酸化分解过程中产品杂质含量的控制提供理论依据,分析了铝酸钠溶液碳酸化分解过程的热力学,认为该过程中Al3析出的真正机理是过饱和铝酸钠溶液的自发结晶;而基于分解过程中平衡浓度的热力学计算表明,在碳酸化分解过程中SiO2的变化规律与公认的三段变化规律一致,说明该过程产品中SiO2的含量取决于它在溶液中的平衡浓度,而非吸附所致;同时还分析了丝钠铝石的形成热力学。
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The second part of the experiment of which ASBHP is able to measure the optical rotation angle of a chiral medium in liquid is conducted.
论文第二部分则以相同光学架构,量测右旋葡萄糖溶液的浓度,溶液中的旋光性正比於在溶液中溶质的量。
- 更多网络解释与在溶液中相关的网络解释 [注:此内容来源于网络,仅供参考]
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buffer solution:缓冲溶液
5.5 缓冲溶液(Buffer solution) 缓冲溶液( ) 5.5.1 缓冲溶液的定义和组成 (1)同离子效应及其对平衡体系的影响 20 在弱电解质的溶液中加入具有相同离子的强电解质,可使弱电解质电离平衡向左移动,使弱电解质的电离度降低,
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disperse:分散
是一种有机界面活性剂,可加在溶液中使悬浮的大型粒子,得以分散成更小的粒子,而能均匀分散(Disperse)在溶液中,使发挥更好的乳化效果. E-Beam(简称EB)是一种细小的能源,可用做无需底片直接感光的光源.
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embedding medium:包埋介质(在溶液中的溶剂或在溶体或晶体中的同类分子)
embedding | 包埋,嵌入 | embedding medium | 包埋介质(在溶液中的溶剂或在溶体或晶体中的同类分子) | emboss | 凸点
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isotonic solution:等张溶液
所谓等张溶液(Isotonic solution)是指与红细胞膜张力相等的溶液,在等张溶液中既不会发生红细胞体积改变,更不会发生溶血,所以等张是个生物学概念. 前面从结构作了分析,通过实验才能对其物理化学性质确切了解. 预试一般包括溶解性实验和稳定性的初步考察.
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litmus:石蕊
石蕊(Litmus)是一种弱的有机酸,相对分子质量为3300,在酸碱溶液的不同作用下,发生共轭结构的改变而变色. 也就是说,在溶液中,随着溶液酸碱性的变化,其分子结构发生改变而呈现出不同的颜色变化: 在酸性溶液里,分子是其存在的主要形式,
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mole fraction:莫耳分率
若溶质为挥发性高蒸气压物质,溶液的蒸汽压等於溶液中每一成份的蒸汽压的总和(包含溶质和溶剂),每一成份的蒸汽压等於此纯物质的蒸汽压和它在溶液中的莫耳分率(mole fraction)的乘积,溶液的总蒸汽压P可以表示为下面的式子P=P*AXA+P*BXB......,
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precipitate:促进
我喜欢"促进"(precipitate)这个词. 它本来是个化学技术词汇,用来描述从混合溶液中促进某一组分的结晶过程. 但结晶并不是立即产生,通常需要有一个晶核. 晶核有时是同一结晶体的一个小小的分子,在溶液中注入一点纯净物质将导致链式反应,
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regular solution:正规溶液
固体在理想溶液中的溶解度可根据Gibbs-Helmholtz方程计算:正规溶液(regular solution)是指非极性溶质与非极性溶剂所形成的溶液,溶质与溶剂间存在范德华力而无其它特殊相互作用力,如化学反应、偶极力、缔合作用等,也无体积效应和熵变,
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reanneal:再退火
由于它是单链的,不像双链的DNA探针,在溶液中不会再退火(reanneal),因此,较大百分比的探针可参与杂交反应,较cDNA探针的信号强. 除此之外,在溶液中产生的cRNA-mRNA杂交体比相应的cDNA-mRNA杂交体稳定,但在原位杂交中是否如此尚未证明.
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Dakin's solution:达金溶液
加速死细胞与活细胞的分离. 又无一些较强的杀菌溶液(如石碳酸或碘溶液)的弊病(损伤活细胞或在血浆中失去效力). . <<美国英语传统词典>>(第四版,2000年)对达金溶液的注释:达金溶液(Dakin's Solution)是一种次氯酸钠溶液,用于清洗伤口.