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the properties    
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  性能
    The properties and color of alumina glass for dental CAD/CAM
    牙科CAD/CAM用铝瓷材料的性能与渗透着色的研究
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    The Investigation on the Properties of Aeronautic Aluminum Alloys Under Synergistic Action of Environmental and Mechanical Factors
    环境与力学因素协同作用下的航空铝合金性能研究
短句来源
    The Experimental Research on the Effect of Preparation Technology and Radiation Crosslinking to the Properties of PMMA
    制作工艺及辐射交联对PMMA性能影响的实验研究
短句来源
    A Study of Influence of Microstructure of Pyrocarbon on the Properties of C/C Composites
    热解炭微观结构对C/C复合材料性能影响的研究
短句来源
    The Properties of Submicron BaTiO_3 Fine-grained X7R MLC Ceramic Material
    亚微米BaTiO_3 X7R MLC细晶陶瓷介质材料的介电性能研究
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  性质
    Studies on the Properties and Applications of Cyclometallated Ferrocenylimines
    二茂铁亚胺环金属化合物的性质与应用研究
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    Study on the Properties of Growth and Electricity of Carbon Nanotubes and Their Related Materials
    碳纳米管及相关材料的生长与电学性质研究
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    Study on the Properties of Glutamate Decarboxylase and Accumulation of γ- Aminobutyric Acid in Rice Germ
    米胚谷氨酸脱羧酶性质及其富集γ-氨基丁酸研究
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    Studies on the Properties of Gallium(Ⅲ) and Chromium(Ⅲ)-Transferrins and the Mechanism of Their Transport
    镓(Ⅲ)、铬(Ⅲ)-转铁蛋白配合物性质及转运机制研究
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    Electroanalytical Studies on the Electrode Process of O_2/O_2(?) and the Properties of O_2~(?) in Aprotic Media
    非质子溶剂中O_2/O_2~(?)电极过程及O_2~(?)性质的电分析研究
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  特性
    The properties of human sperm membrane CI~- channel reconstituted into giant liposome and the inhibition of male antifertility drugs on mouse spermatogenic cell Ca~2+channels
    人精子膜Cl~-通道的特性和男性抗生育药对Ca~(2+)通道的作用
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    Studies of the Properties of a New Type of Laser-Driven Accelerator
    一种新型激光加速器的特性研究
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    Study on the Properties and Retrogradation Mechanism of Rice Starch
    稻米淀粉特性与老化机理研究
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    Study on the Properties and Purification of Endo-β-1, 4-Glucanase from Odontotermes Formosanus(Isoptera:Termitidae)
    黑翅土白蚁内切-β-1,4-葡聚糖酶分离纯化及其特性研究
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    Study of the Properties and Mechanism of Organic Thin Film Electroluminescent Devices
    有机薄膜电致发光器件特性及机理研究
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  各项性能
    Test results of the properties of CWS including stability and slurry ability show that the highest concentration is 68% for shuanyashan coal when used additive 0.5%,d50 30.86μm.
    对加入该添加剂制得的水煤浆的各项性能测试(黏度,稳定性,流变性),表明该添加剂在用量为0.5%,平均粒径为30.86μm,对双鸭山煤的最高制浆浓度为68%。
短句来源
    The influence of matrix module on the properties of composite is studied.
    研究了基体模量对玻璃纤维增强复合材料单向板各项性能的影响。
短句来源
    The influences of surface treatment and the contents of nano-sized CaCO3, extrusion technology and other additives on the properties of the composites were investigated.
    讨论了纳米CaCO_3的表面处理方法、纳米CaCO_3的含量、复合材料的制备工艺以及各种助剂对复合材料各项性能的影响。
短句来源
    The contrast of properties of the FDY-371 and the KG indicates that the properties of the KG are correspond to that of the FDY-371.
    通过对油剂FDY-371与配方KG的各项性能指标对比研究,表明所研制油剂KG的各项性能指标与油剂FDY-371相当。
短句来源
    The experiment results show that the properties of white glue will be outstanding when DS of the starch acetate is between 0.81 and 1.16 or so.
    综合各项性能,当DS在0.81~1.16左右时,所得白乳胶性能较好。
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  the properties
Using the properties ofn-Hopf algebras we show that certain spaces do not admit the structure of ann-valued group and that certain commutativen-valued groups do not arise by applying then-coset construction to any commutative group.
      
In the process we study the properties of different homogeneous models for ${\mathbb H}H(n).$
      
The mathematical concept of frames is utilized in the analysis of the properties of the sequence of sampling functions.
      
The study of multiwavelets involves the consideration of the properties of several (simultaneously) refinable functions.
      
We study the properties of the continuous measures μk, induced by
      
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Properties of the electric network determinants are throughly investigated. The new rules for obtaining the denominator and the numerators of the electric network determinants due to K. T. Wang are generalized. Both the generalized rules and the rules given by Kirchhoff are proved from the properties of the determinants studied. A new inductive method for obtaining the denominator and the numerators is offered.

本文所述为对于电网络行列式各种性质之彻底探讨。从探讨所得,可将最近王季同氏所发明分解电网络之新方法,加以普遍化。此经过普遍化之新方法,以及Kirchhoff氏原有求此类行列式分母分子之规则,皆可从行列式之性质,求得严格的证明。最后著者并供献一更觉简便的分解电网络之推演方法。

Many oxides of heavy metals when existing not in exact stoichiometric combining ratios exhibit the properties of a semi-conductor.The resistance ofsuch materials has a very large negative temperature coeffcient.Such thermallysensitive resistors,known as“thermisters”,have found wide range of appli-cations in thermometry,communication engineering,etc.In this investigationwe tried over hundred samples of metallic oxides and their mixtures fusedwith glass powder to form small compact bead on Pt lead wires.The...

Many oxides of heavy metals when existing not in exact stoichiometric combining ratios exhibit the properties of a semi-conductor.The resistance ofsuch materials has a very large negative temperature coeffcient.Such thermallysensitive resistors,known as“thermisters”,have found wide range of appli-cations in thermometry,communication engineering,etc.In this investigationwe tried over hundred samples of metallic oxides and their mixtures fusedwith glass powder to form small compact bead on Pt lead wires.The sampleswere treated by a new firing technique which is very convenient in laboratory.Some samples made from mixed oxides of Mn,Co and Ni showing a resistanceof 10~4-10~5 ohms at room temperature and 10-100 ohms at 500℃ seem.verypromising for practical purposes.

多种重金属的氧化物,经高温煅烧后,均可呈现电子性半导体的性质,其电导随温度急剧变化,故可作测量温度之用,通常称热感电阻。从电导的对数与温度的倒数的图中,可以推算半导体电导性所需的电子能位差。本文试验氧化物混入玻璃粉制成的小珠,用半导体体内电热法制成热感电阻,在常温时的电阻值为10~4—10~5欧姆,在500℃时只有10—100欧姆。半导体与铂导体线间的电性接触,经实验推知是良好的。这种制备方法,在实验室里,非常简易。经多次试验,以混合锰、钴、镍的氧化物和玻璃粉制成的电导性较大,有实用价值。

(1) Sodium salt of reduced codehydrogenase I has been obtained in good yield as a dry powder from codehydrogenase I by reduction with alcohol and alcohol dehydrogenase. This preparation was stable for at least 5 months when kept dry at -15℃. (2) The properties of the particle-bound codehydrogenase I cytochrome reductase system in heart muscle preparation were found to differ considerably from those of the soluble enzyme as obtained by Mahler et al. Among other things, the affinity for cytochrome c of the particle-bound...

(1) Sodium salt of reduced codehydrogenase I has been obtained in good yield as a dry powder from codehydrogenase I by reduction with alcohol and alcohol dehydrogenase. This preparation was stable for at least 5 months when kept dry at -15℃. (2) The properties of the particle-bound codehydrogenase I cytochrome reductase system in heart muscle preparation were found to differ considerably from those of the soluble enzyme as obtained by Mahler et al. Among other things, the affinity for cytochrome c of the particle-bound enzyme is much greater than the soluble enzyme. The Michaelis constant for cytochrome c of the former is only one twelfth of that of the latter.(Fig. 2A). (3) With either oxygen or excess cytochrome c as electron acceptor, it was found that the overall activity, in terms of rate of oxygen consumption or cytochrome c reduction, when both succinate and reduced codehydrogenase I were oxidized simultanously, did not represent the sum of the rates of oxidation when these two substrates were separately oxidized but equalled only the faster of the two separate oxidation rates(Fig. 5, Tables 1, 2). If 2,6-dichlorophenol indophenol was used as the electron acceptor, the overall rate of simultaneous oxidation of these two substrates was found to equal exactly the sum of the rates of separate oxidation(Table 3). (4) When either oxygen or excess cytochrome c was used as the electron acceptor, reduced codehydrogenase I and succinate each inhibited the rate of oxidation of the other(Figs 4, 6 & 7). Evidence has been presented to show that the inhibition of succinate oxidation by reduced codehydrogenase I is not due to the accumulation of oxaloacetate. (5) When malonate was also added to the reaction mixture, succinate no longer produced any inhibition of the oxidation of reduced codehydrogenase I(Fig. 8). (6) It is therefore concluded that in heart muscle preparation both succinate and reduced codehydrogenase I are oxidized by cytochrome c through a common, velocity limiting factor. This is in accordance with the view previously reached by some workers from studies on the action of certain inhibitors. However, it should be noted that in our experiments no agents which might produce any conceivable change in the colloidal structure of the enzyme system has been employed. (7) It should be emphasized that our results clearly show that great caution must be exercised in drawing conslusion on the role an enzyme might play in a complex enzyme system from studies of the properties of a solubilized enzyme. (8) It is believed that the competition of two enzyme systems for a common linking factor as demonstrated in this report has provided a new method for studies on the mutual relations of two or more enzyme systems.

(一)本報告提供了一個從輔酶Ⅰ,用酶還原法製備還原輔酶Ⅰ的方法。我們所製得的還原輔酶Ⅰ鈉鹽乾粉,可以在低温保存數月而不被氧化。 (二)與心肌製劑中顆粒相結合的輔酶Ⅰ細胞色素還原酶系,和用乙醇抽出的水溶性的輔酶Ⅰ細胞色素還原酶的性質頗不相同。其中比較重要的不同點是對於細胞色素c的親力,前者遠大於後者,其米氏常數僅約為後者的十二分之一。 (三)用一心肌顆粒製劑作為材料,無論用氧或過量之細胞色素c作為氫受體,還原輔酶Ⅰ與琥珀酸同時氧化時的總速度,不等於二者分別氧化時速度之和,而僅等於其中氧化較快者單獨氧化時之速度。但如用[2,6]二氯靛酚作為氫受體時,二者共同氧化時之總速度完全等於二者分別氧化時速度的和。 (四)當用氧或過量之細胞色素c作為氫受體時,琥珀酸與還原輔酶Ⅰ能彼此互相抑制對方氧化的速度。有足夠的實驗材料說明,還原輔酶Ⅰ對於琥珀酸氧化的抑制,不是由於草醯乙酸聚集的緣故。 (五)如果在反應混合物中同時含有琥珀酸脫氫酶的專一抑制劑,丙二酸,則琥珀酸對於還原輔酶Ⅰ氧化作用的抑制即被解除。 (六)根據以上的實驗結果,可以認為,還原輔酶Ⅰ及琥珀酸先通過一個共同的因子與細胞色素c作用。這個共同的因子在一般情形之下,也是...

(一)本報告提供了一個從輔酶Ⅰ,用酶還原法製備還原輔酶Ⅰ的方法。我們所製得的還原輔酶Ⅰ鈉鹽乾粉,可以在低温保存數月而不被氧化。 (二)與心肌製劑中顆粒相結合的輔酶Ⅰ細胞色素還原酶系,和用乙醇抽出的水溶性的輔酶Ⅰ細胞色素還原酶的性質頗不相同。其中比較重要的不同點是對於細胞色素c的親力,前者遠大於後者,其米氏常數僅約為後者的十二分之一。 (三)用一心肌顆粒製劑作為材料,無論用氧或過量之細胞色素c作為氫受體,還原輔酶Ⅰ與琥珀酸同時氧化時的總速度,不等於二者分別氧化時速度之和,而僅等於其中氧化較快者單獨氧化時之速度。但如用[2,6]二氯靛酚作為氫受體時,二者共同氧化時之總速度完全等於二者分別氧化時速度的和。 (四)當用氧或過量之細胞色素c作為氫受體時,琥珀酸與還原輔酶Ⅰ能彼此互相抑制對方氧化的速度。有足夠的實驗材料說明,還原輔酶Ⅰ對於琥珀酸氧化的抑制,不是由於草醯乙酸聚集的緣故。 (五)如果在反應混合物中同時含有琥珀酸脫氫酶的專一抑制劑,丙二酸,則琥珀酸對於還原輔酶Ⅰ氧化作用的抑制即被解除。 (六)根據以上的實驗結果,可以認為,還原輔酶Ⅰ及琥珀酸先通過一個共同的因子與細胞色素c作用。這個共同的因子在一般情形之下,也是這兩個酶系統的速度限制因子。應該指出在我們的實驗中,並未使用任何可能影響酶系統結構的條件,因此我們的結果是在一個比較接近於生理狀態的情形之下獲得的。 (七)應該着重指出,從本報告的結果可以看到,一個用人為的方法從複雜酶系上溶解下來的酶的性質,有時並不能代表這個酶在有組織的酶系統中的真實情况。 (八)我們相信,本報告所說明的兩酶系競爭一個共同因子的一些現象,將为研究複雜酶系之間的相互關係,提供一個新的方法。

 
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