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 function
 The function and structure of a novel leukocyte differentiation antigen CD226(PTA1) 一种新的白细胞分化抗原CD226(PTA1)分子结构和功能关系的研究 短句来源 The Structure and Function of E.coli Era and Its Interactional Protein E.coli Era及其相互作用蛋白的结构与功能研究 短句来源 A Novel SDE-grafted Affinity Adsorbent Mimicked the Ligand Function of LDL Receptor 一种接有仿LDL受体功能结构短肽SDE的LDL亲和吸附剂的研究 短句来源 Experimental Studies on the Function of Ndr2 in Human Lymphoid Hematopoietic Tissues Ndr2基因在人类淋巴造血系统中的功能研究 短句来源 The Role of NMDA Receptor Subunit 2B in the Development of Auditory Function of C57BI/6 Mice NMDA受体2B亚单位在C57BI/6小鼠生后脑听觉功能发育中的作用 短句来源 更多
 functions
 Biological Functions of a Novel CXC Chemokine MIP-2γ 新型趋化因子MIP-2γ的生物学功能研究 短句来源 Interaction between AES, TLE1 and gp130 molecules and investigation on their functions AES、TLE1和gp130分子间的相互作用及其功能研究 短句来源 Morphological Study on Relationship between Ependyma and Brain's Functions 室管膜与脑功能关系的形态学研究 短句来源 Relationship between Structures and Functions of Prothoracicostatic Peptide and Its Analog Peptides 抑前胸腺肽及其类似多肽结构和功能关系的研究 短句来源 The Relationship between Structure and Functions of the Novel Plant Chitinase BjCHI1 from Brassica Juncea 芥菜新型几丁质酶BjCHI1的结构与功能关系研究 短句来源 更多
 functionality
 Equally important is that P. Pastoris, as an eukaryote expression system, can provide the potential for producing soluble, correctly folded recombinant proteins with correct post-translational modifications required for functionality. 同样重要的是,P. Pastoris是一种真核生物,因此具有蛋白质翻译后修饰功能,使得重组蛋白以可溶型方式表达和正确的方式进行折叠。 短句来源 The former probably has an alcohol functionality,for the saponified crude extract has been proved to be active in EAG responses as well as in field tests. 前者可能具有醇的功能团,因为粗提油皂化后,无论是EAG检测或是林间生物测定都证明具有活性。 短句来源
 fuction
 The distribution and biological fuction of pituitary adenylate cyclase activating polypeptide 垂体腺苷酸环化酶激活肽的分布及其生物学功能 短句来源 The Study of the Effects of Cold Stress on some Cell Fuction of the Ctenopharyngodon Idella Cell Line ZC-7901 and the Colossoma Brachypomum Cell Line CBS 低温胁迫对草鱼ZC-7901细胞系和淡水白鲳CBS细胞系某些细胞功能影响的研究 短句来源 At the same time, the SP, MP and DP were obviously decreased above 16.78%（P<0.01）, it indicated that TP could significantly enhance the myocardial contractility and the pumping fuction, and dilate the peripheral blood vessels. 同时SP、MP、DP均较用药前明显降低16.78%以上（P<0.01）,表明TP可使在体心脏心肌收缩性能增强，心泵血功能加强,并起着外周扩张血管的作用。 短句来源 La3+and Ce3+ could stabilise the structure and fuction of the membrane, thus promote the growth of aquatic plants. The submerged macrophyte was more sensitive to La3+ than the floating plants. La~(3+)和Ce~(3+)能稳定膜的结构和功能，对水生植物的生长有一定的促进作用，La~(3+)对沉水植物和浮水植物发挥作用的浓度范围差别较大。 短句来源 Conclusion The function of transcription activated by ERR1 mutation K244A was lower than ERR1 wild type,which may be the base for further studying the constitution and fuction of ERR1. 结论ERR1突变体ERR1/K244A转录活化功能明显低于野生型的ERR1,为进一步研究ERR1的结构与功能打下了基础。 短句来源 更多

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 function
 Simple modules over the multiparameter quantum function algebra at roots of 1 We construct essentially all the irreducible modules for the multiparameter quantum function algebraF?φ[G], whereG is a simple simply connected complex algebraic group, and ? is a root of unity. Virasoro Algebra, Dedekind η-function and Specialized Macdonald Identities We study Nekrasov's deformed partition function $Z(\varepsilon_1,\varepsilon_2,\vec{a};\mathfrak q,\boldsymbol\beta)$ of 5-dimensional supersymmetric This is done by reducing the problem to the case of bipartite quivers of a special form and using a function DP on three matrices, which is a mixture of the determinant and two pfaffians. 更多
 functions
 We introduce the (purely algebraic) notion of ann-Hopf algebra and show that the ring of functions on ann-valued group and, in the topological case, the cohomology has ann-Hopf algebra structure. LetRo andR1 be two Kempf-Ness sets arising from moment maps induced by strictly plurisubharmonic,K-invariant, proper functions. A theorem of Richardson states that the algebra of regular functions ofG is a free module over the subalgebra of regular class functions. On correlation functions of drinfeld currents and shuffle algebras We express the vanishing conditions satisfied by the correlation functions of Drinfeld currents of quantum affine algebras, imposed by the quantum Serre relations. 更多
 functionality
 The anticholinergic activity was incorporated into the intact esters to overcome the gastric toxicity of indomethacin, not only by blocking the acidic functionality but also by decreasing gastric secretions and motility. The IA functionality was extended by introducing a primarily mobile agent. These approaches extend the functionality of cellular automata and are realizable as dedicated multiprocessor data processing facilities. The effect of main factors (the nature and functionality of a modifier, the presence of water) on the chemical modification of γ-Al2O3 surface with aryl silanes was studied by an FTIR spectroscopy and elemental analysis. The control computer, frontend computers, and observer computers are distinguished logically in the EAS structure on the basis of their functionality. 更多
 fuction
 Approximation multidimension fuction with functional network By means of a critical confrontation with Chris Arthur's work, Finelli presents his thesis of the presence of a double theory and fuction of abstraction in Marx's work. Some general expressions for partition fuction and local Green's function of the impurity problem are studied and related to theT-matrix of compounds. The tunneling frequency is also checked by measurements of the deuteron spin-lattice relaxation timeT1 as a fuction ofv0. The conductance is expressed in terms of the spin correlation fuction of a classical one dimensionalXY-model with ferromagnetic nearest neighbor plus inverse square interaction. 更多
其他
 Wir untersuchten die kapillare Dichtigkeit an 6 Aeren der Grosshirnrinde.Die Materialien bestanden aus 6 Gehirnen von Kindern im Alter von 1—2 und 5 Jahren und 2 Gehirnen von Hunden. Diesen 8 Gehirnen injezierten wir Gelatinetusche,bzw.25% Argyrol. 1 Die Kapillaren der Grosshirnrinde und des -markes bildeten zusammen ein dichtes,mitein- ander verbundenes Netz.Die Netzmaschen in der Grosshirnrinde waren enger als diejenigen des Grosshirnmarkes. 2 Die kapillare Dichtigkeit in der Grosshirnrinde war groesser als... Wir untersuchten die kapillare Dichtigkeit an 6 Aeren der Grosshirnrinde.Die Materialien bestanden aus 6 Gehirnen von Kindern im Alter von 1—2 und 5 Jahren und 2 Gehirnen von Hunden. Diesen 8 Gehirnen injezierten wir Gelatinetusche,bzw.25% Argyrol. 1 Die Kapillaren der Grosshirnrinde und des -markes bildeten zusammen ein dichtes,mitein- ander verbundenes Netz.Die Netzmaschen in der Grosshirnrinde waren enger als diejenigen des Grosshirnmarkes. 2 Die kapillare Dichtigkeit in der Grosshirnrinde war groesser als jene des Markes.Die dur- chschnittliche kapillare Laenge von 6 Grosshirnrindschichten war 3,26:1 im Verhaeltnis zu der Laenge des Grosshirnmarkes.Die an Gefaessmenge mangelnde 1.Schicht besass eine kapillare Laenge,zweimal groesser als die des Markes. 3.Die kapillare Dichtigkeit zwischen 6 Schichten der Grosshirnrinde war ganz verschieden; die 4.Schicht war am staerksten,die 1.Schicht am schwaechsten. 4.Die Blutgefaessverteilung in den 6 Aeren der Grosshirnrinde war im motorischen Rinden- feld am reichsten;im sensiblen Rindenfeld,Schzenrum,Hoerzentrum,frontalem Pole und Riechzen- trum nahm sie stufenweise ab.Dies bedeutet,dass die Blutversorgung des Paloccortex am aermsten war.Dort wo die Nerventaetigkeit am kompliziertesten war,waren die Blutgefaess verteilung relativ reicher. 在6个一至二岁半的童尸和2只狗上用墨汁明胶注射观察了6个大脑皮质分析器核心部的血管密度。1.大脑皮质和髓质的毛细血管形成一个互相紧密联系着的血管网。皮质血管网的网眼比髓质的稠密。2.皮质的毛细血管密度比髓质的大,皮质6层中的毛细血管平均长度与同火面积的髓质毛细血管长度之比为3.26:1。皮质6层中血管量最少的第J层也比髓质的多一倍。3.大脑皮质各层的毛细血管密度不同,在中央前回中,以第Ⅲ、Ⅳ层的血管为最密,最贫乏的是第Ⅰ层。4.大脑皮质6区中以运动分析器核心部的血管密度最大,而感觉分析器、视觉分析器、听觉分析器、额极附近及嗅觉分析器的核心部的血管密度依次减少。这说明旧皮质的血液供给较贫乏,而功能愈繁复的地方,血管亦愈丰富。 The effect of irradiation by X-rays, without the exclusion of oxygen, on the molecular structureof calf thymus DNA has been studied. The reduced viscosity (η_(sp)/c) was decreased and themolar extinction coefficient (ε_(260mμ)) increased with increasing X-ray dosage at a definite doserate. Besides these apparent effects, there were, as deduced from studies on heat-lability, alsohidden damages in the DNA macromolecule, even with dosage as low as 1×10~4r. Whileη_(sp)/cand e26anu of the unirradiated DNA remained... The effect of irradiation by X-rays, without the exclusion of oxygen, on the molecular structureof calf thymus DNA has been studied. The reduced viscosity (η_(sp)/c) was decreased and themolar extinction coefficient (ε_(260mμ)) increased with increasing X-ray dosage at a definite doserate. Besides these apparent effects, there were, as deduced from studies on heat-lability, alsohidden damages in the DNA macromolecule, even with dosage as low as 1×10~4r. Whileη_(sp)/cand e26anu of the unirradiated DNA remained unchanged after incubahon in 0.2M NaCl at76'C for 60 min., the irradiated DNA uPOn incubation shovvcd further decreases in V,./c and in-crea5es in ε_(260mμ). This decreased stability of the irradiated DNA towards heating revealed that,in addition to the disruption of some of the hydrogen-bonds in DNA immediately upon irradia-tion, a labilization of other hydrogen-bonds has also occurred. A protective agent, probably Ca-citrate, was found to be present in the stock solution of DNA.In the presence of this protective agent, the η_(sp)/c of DNA remained constant after 6×10~4rand decreased slightly after 12×10~4 r irradiation, with no significant changes in ε_(260nμ). However,the hidden damage was not prevented and it developed to greater extents with increasing dosages. Samples which suffered only hidden damages provided comparatively simple systems for theinvestigation of the nature of primary events occurring upon irradiation and their bearing on theapparent degradation of the DNA molecule. In the presence of the protective agent, the dose-effect curves based on η_(sp)/c measurements showed that, preceding the appearance of degradation,there was an apparently stable phase during which the hidden damage was actually developing, asevidenced by the increased heat-lability. This suggested that the hidden damage may involve the disruption of one of the chains ofthe double-helical structure of DNA, causing the breakagc of the hydrogen-bonds near the pointsof main-chain damage, rendering the other hydrogen-bonds unstable toward 76℃ incubation, andeventually resulting in the degradation of the macromolecule as an accumulative effect. Provided that there is no essential difference between the direct and the indirect action of X-rays on DNA, the mechanism suggested above could also account for the process of degradationproduced in the absence of the protective agent, which probably acts only in the neutralization offree-radicals produced from water by irradiation. The mechanism of the action of Ca-citrate as a protective agent for DNA and the significanceof the hidden damage of the DNA macromolecule in the primary and cumulative hiological effectof radiation were also discussed. (1)用X射线照射小牛胸腺DNA溶液,以还原粘度和紫外吸收光谱的变化为指标,证明射线对DNA大分子除有直接显露的降解之外,还可导致对76度保温不稳定性的出现。这反映了结构上隐藏破坏的存在。隐藏破坏与所接受照射的剂量成比例地增加。(2)按Zamenhof法制备的DNA样品储存液中合有“保护物质”。在“保护物质”的存在下,DNA溶液可耐受6×10~4r的照射而无直接显露的降解发生。但隐藏破坏却不可避免,在一定剂量下可以单独地存在,并随剂量之增加而发展,当剂量增加到一定程度时,显露的降解随之出现。(3)“保护物质”是可透析的,它具有抗射线的作用,而不是保全已遭受降解的DNA的大小外形。实验结果表明“保护物质”可能是钙-柠檬酸盐。讨论了钙-柠檬酸盐保护作用的机制。(4)比较隐藏破坏单独存在和与直接显露的降解同时存在的实验结果表明,隐藏破坏的本质包括了:1)主链的单侧打断,2)部分氢键的破坏,3)残余氢键不稳定性的增加。在三者之间有平行的比例关系。主链的打断可能是后二者出现的原因。分子的直接降解可能又是隐藏破坏积累的结果。(5)在“保护物质”存在下照射DNA,为人工制造隐藏破坏,研究DNA的结构与功能提供了...(1)用X射线照射小牛胸腺DNA溶液,以还原粘度和紫外吸收光谱的变化为指标,证明射线对DNA大分子除有直接显露的降解之外,还可导致对76度保温不稳定性的出现。这反映了结构上隐藏破坏的存在。隐藏破坏与所接受照射的剂量成比例地增加。(2)按Zamenhof法制备的DNA样品储存液中合有“保护物质”。在“保护物质”的存在下,DNA溶液可耐受6×10~4r的照射而无直接显露的降解发生。但隐藏破坏却不可避免,在一定剂量下可以单独地存在,并随剂量之增加而发展,当剂量增加到一定程度时,显露的降解随之出现。(3)“保护物质”是可透析的,它具有抗射线的作用,而不是保全已遭受降解的DNA的大小外形。实验结果表明“保护物质”可能是钙-柠檬酸盐。讨论了钙-柠檬酸盐保护作用的机制。(4)比较隐藏破坏单独存在和与直接显露的降解同时存在的实验结果表明,隐藏破坏的本质包括了:1)主链的单侧打断,2)部分氢键的破坏,3)残余氢键不稳定性的增加。在三者之间有平行的比例关系。主链的打断可能是后二者出现的原因。分子的直接降解可能又是隐藏破坏积累的结果。(5)在“保护物质”存在下照射DNA,为人工制造隐藏破坏,研究DNA的结构与功能提供了一个简便的方法。 So far as the literature is concerned, Echidnophaga murina is the only species of thegenus Echidnophaga apparently restricted to the southern Palaearctic region, especially inMid-East district. During 1953 to 1957 it was found several times on Rattus rattusrattus, collected from the warehouses of the Shanghai Port. A total number of about 150 females were collected at the base of outer ear and thelower maxilla of the host. The mouthparts as well as the claws of the parasites aredeeply thrust into the host's... So far as the literature is concerned, Echidnophaga murina is the only species of thegenus Echidnophaga apparently restricted to the southern Palaearctic region, especially inMid-East district. During 1953 to 1957 it was found several times on Rattus rattusrattus, collected from the warehouses of the Shanghai Port. A total number of about 150 females were collected at the base of outer ear and thelower maxilla of the host. The mouthparts as well as the claws of the parasites aredeeply thrust into the host's skin at the site of attachment, so that it is very difficult todetach the fleas and most of them are broken off during collection. Apparently, theclaws had lost their clasping function, and were modified as organs of penetration, en-abling the proboscis to penetrate into the skin of the host for firm attachment. After a careful morphological study, it was found that the subapical plantar bristle ofthe last tarsal segment is normally single, but occasionally two such bristles may be pre-sent on one or both sides of any pair of the legs. Such incidence is most often foundon the fore-legs, less so on the hind-legs and the least on the mid-legs. The geographical distribution of this flea is discussed in the paper, and a key to thethree Chinese species of the genus Echidnophaga, basing upon the morphological charac-ters of the head, as well as their host, is given. 本文记述了在上海发现的雌性鼠冠蚤的形态,对于该蚤的亚端跖宗变异作了分析,并对足爪的形态与其功能的统一性进行了探讨,此外,对于该蚤的地理分布及在我国发现的意义作了简要的论述。文内附有我国已发现的3种冠蚤属蚤种的检索表。 << 更多相关文摘
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