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 A Service Control Point Which Can Provide the E800 Service 一种可提供E800业务的业务控制点 短句来源 To Provide Scientific and Technological Support for Hydropower Propotion Target 30% during the First 10 Years of Next Century 为下世纪前10年水电比重30％提供科技支撑 短句来源 Dialogic Plans to Provide New S.100 Solutions Dialogic计划提供新的业务开发平台方案 短句来源 How Does Book Materials Labour Provide with High-Quality Service for the Document Research 图书资料工作怎样为文献研究提供高质量服务 短句来源 China Provide 0-g Service to Japanese 中国返回式卫星为日本提供搭载服务获得成功 短句来源 更多
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 This paper displays control technique of the noise from Passiom 12K device,according to the measuring result,the noise reason of the device was determined,and provide a foundation for the corresponding noise control design. 主要系统的介绍了Passiom 12K噪声的控制技术,根据测量的结果对噪声进行了分析,为相应的噪声控制提供了合理的依据。 短句来源 Conclusion The accuracy of location and distribution of CD20 positive cells in the nuclei of B cells of early human embryo liver may provide an important clue for further exploration of the functional mechanism of CD20 in the process of B cell proliferation and differentiation. 结论在人早期胚内,CD20定位于肝内的B细胞,并分布在细胞核内; 该研究结果为深入探讨CD20阳性细胞的功能和作用机制提供了重要线索。 短句来源 This analysis provide theory basis for work safety of friction clutch. 该分析也为摩擦离合器安全工作提供了一定的理论依据。 短句来源 The results show that this method can improve the control and mechanical system design,and provide theoretical bases for robot control and performance improvement. 仿真结果表明,该仿真方法可以有效提高控制系统及机械系统的设计效率,为实现机器人的控制及性能改进提供了理论依据。 短句来源 Apply competence model to the organization career planning,it provide a new method and tool for career planning. 把胜任特征模型导入组织职业生涯规划,为我们科学开展员工生涯规划提供了一种新的方法与工具。 短句来源 更多
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 Deepen reform, provide overall service and develop comprehensive management 深化改革 转轨变型 发展综合经营 搞好全面服务 短句来源 Tourism Will Provide More Opportunities for the Development of S&T and Economy 旅游业可为科技经济发展带来更多的机会 短句来源 Provide Full Support to Exploration With Bright Application Prospects 大力支持应用前景明确的创新研究 短句来源 West Europe Will Provide the Newest Turboshaft-MTR390 西欧将推出最新的直升机发动机——MTR390 短句来源 Some Suggestions on How to Provide Developing Service for Mining Enterprises by Ministrative Management Department 谈谈地矿行政管理部门为矿山企业搞好开发服务的几点建议 短句来源 更多

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 Gindikin that complex analytic objects related to these domains will provide explicit realizations of unitary representations ofH?. Here we provide certain conditions (more general than those in [Ka1]) which guarantee preservation of the topology under a modification. We investigate conditions on kernel operators in order to provide prescribed orders of approximation in the Triebel-Lizorkin spaces. We provide a direct computational proof of the known inclusion ${\cal H}({\bf R} \times {\bf R}) \subseteq {\cal H}({\bf R}^2),$ where ${\cal H}({\bf R} \times {\bf R})$ is the product Hardy space defined for example by R. The space spanned by the translates of φv can only provide approximation order if the refinement maskP has certain particular factorization properties. 更多
 A new species under a new genus of the stbfamily Derogenetinae is described. The cirrus pouch is present and envelopes the upper portion of the curved seminal vesicle and the whole mass of prostate glands. The ventral sucker is situated in the posterior part of the ,body. The vitellaria are in a single and compact mass, located at the posterior extremity, and the eggs are provided with two long filaments at one pole. For the new genus and new species the name Chenia cheni is proposed. 本文把Derogenetinae亚科中之一新属及新种作一详细叙述。其主要特徵为(1)有阴茎囊包被貯精囊之上端及攝護腺之全部,(2)腹吸盤在体之中部稍近下方,(3)单块卵黄腺在体之最末端,(4)在无卵蓋之一端具两條细长丝状体。擬名陈氏半尾吸蟲(Chenia cheni)为本亚科中之一新属及新种。 (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。 In chronical experiments on dogs provided with gastric pouches, we showed that the gastric secretion stimulated by histamine can be reflexly inhibited by electrical stimulation on the skin. This inhibition can be shown with Heidenhain pouches as well as with Pavlov pouches, indicating that the phenomenon does not depend on an intact vagus innervation. Furthermore it can still appear in Heidenhain pouches after bilateral subdiaphragmatic section of the splanchnic nerves and bilateral extirpation of the... In chronical experiments on dogs provided with gastric pouches, we showed that the gastric secretion stimulated by histamine can be reflexly inhibited by electrical stimulation on the skin. This inhibition can be shown with Heidenhain pouches as well as with Pavlov pouches, indicating that the phenomenon does not depend on an intact vagus innervation. Furthermore it can still appear in Heidenhain pouches after bilateral subdiaphragmatic section of the splanchnic nerves and bilateral extirpation of the solar plexuses. In such dogs the adrenal glands are of course also severed from their external nerve supplies. It thus follows that the sympathetic innervation to the stomach and the adrenal glands are not indispensable either. Apparently there is some humoral factor as yet unknown, which inhibits gastric secretion and which can be reflexly mobilized by such means as electrical stimulation of the skin. On the other hand, we were able to show that both direct electrical stimulation of the splanchnic nerve and intravenous injection of adrenaline can inhibit the gastric secretion stimulated by histamine. This suggests that when the sympathetico-adrenal system is intact it is likely to be also involved in the inhibitory phenomenon under consideration. The phenomenon is evidently a complex one involving both nervous and humoral factors, and we had also shown that it requires the participation of higher nervous centres, being not elicitable in anesthetized animals. We wish to express our deep gratitude to Prof. T. P. Feng for suggesting this problem and for constant guidance throughout this work. (一)在慢性實驗中用備有小胃的狗,我們证明組織胺引起的胃分泌能反射地为皮膚電刺激及一些其他外界刺激所抑制。 (二)這抑制現象在除去胃的迷走神經支配相交或神經支配,並隔離腎上腺的神經聯系時,仍能出現。它似有某種可以反射地形成的抑制性體液變化為基礎。 (三)但在急性實驗中我們又證明大內臟神經和注射腎上腺素均能抑制組織胺引起的胃分泌,這指示在正常動物胃分泌的反射抑制仍可能通過交感神經-腎上腺系統而得實現。 (四)本文所述的胃分泌的反射抑制現象顯然包含複雜的神經-體液機制,並且是在高級神經中樞參加下產生的。 << 更多相关文摘
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