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They are of particular importance in solving differential and integral equations.


The importance of sampling is underlined, and new geometric sampling theorems for general manifolds are presented.


Various physicochemical descriptors ere correlated with the biological activity out of which descriptors belonging to the family of electronic, spatial, structural and conformational were found to be of importance to the activity.


The compound 12 was found to be five times more potent than 11 in reducing twitch response to nerve stimulations, indicating the importance of extended interonium distances and 17acetoxy function for potent antagonist activity.


Furthermore, that the proposed techniques in this paper allow the decisionmaker to assign a different degree of importance can provide a useful way to efficiently help the decisionmaker make their decisions.

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 The phenomellon of limiting heating is of vital importance and interest in the study of gas' flow through a tube with heat additioll fi.om both theoretical and practical points of view. In particular, it has applications to the design of thel.mal ducts of pl'opulsive devices for high speed aircraft. TI}ils poper col,sists of a prelimillary "study Of limiLing'heating for the;(jfole case of a perfect gas in steady flow through a tube of unifornl cross section. It starts from tile fulldamelltal laws governing... The phenomellon of limiting heating is of vital importance and interest in the study of gas' flow through a tube with heat additioll fi.om both theoretical and practical points of view. In particular, it has applications to the design of thel.mal ducts of pl'opulsive devices for high speed aircraft. TI}ils poper col,sists of a prelimillary "study Of limiLing'heating for the;(jfole case of a perfect gas in steady flow through a tube of unifornl cross section. It starts from tile fulldamelltal laws governing the gas now, fiom which analytical condiLion for limiting heatillg is then derived, and the beavior of gas at exit as resulted. from limiting heating is discussed in some details. Among the conclusions thus obtained, it is interesting to notice that, as the result of limiting hear,ing the gas is leaving tile exiL with less temperature or velocit,y within certain ranges of initial Mach Number; and that sonic s'tate is 'the limiting state that could be reached by ally flow, subsonic or supersonic, t}lrough 11eat addition.  管内稳流气体之加热不能超过一定之限度，逾限即发生所谓限塞现象．在气体热动力学之理论与实际上，极限加热为一重要而饶有兴趣之问题．在现代高速度航空推进机热管部份之设计大多应用。本文试就极限加热作初步之分析：篇首先述气体流动之基本定律，由此以诱导加热限度公式，再由此讨论气体经过极限加热後之状态，并就气体加热前之流速分次声速（ｓｕｂｓｏｎｉｃ），声速（ｓｏｎｉｃ）与超声速（ｓｕｐｅｒｓｏｎｉｃ）三种情况加以比较．在本文所得结论中，有值得吾人注意者即流动气体在某一速度范围之内其温度与速度反因加热而减低．此外声速状态（ｓｏｎｉｃ ｓｔａｔｅ）为任何流动，（ｆｌｏｗ），不论是超声速底或次声速底，经加热後所能达到之极限状态，亦由本文根据极限加热之理论加以证明．在 ｐａｕｌ Ｇｈａｍｂｒｅ与林家翘两先生之“Ｏｎ ｔｈｅ ｓｔｅａｄｙ Ｆｌｏｗ ｏｆ ａ Ｇａｓ Ｔｈｒｏｕｇｈ ａＴｕｂｅ ｗｉｔｈ Ｈｅａｔ Ｅｘｃｈａｎｇｅ ｏｒｃｈｅｍｉｃａｌ Ｒｅａｃｔｉｏｎ”文中会有仝样之结论，共立论系从气体瞬间状态之分析入手，不涉加热限度．本文则从气体起始与终结状态间之关系着手，而以极限加热为讨论中心．如与二氏原文参看可以相中互印证补... 管内稳流气体之加热不能超过一定之限度，逾限即发生所谓限塞现象．在气体热动力学之理论与实际上，极限加热为一重要而饶有兴趣之问题．在现代高速度航空推进机热管部份之设计大多应用。本文试就极限加热作初步之分析：篇首先述气体流动之基本定律，由此以诱导加热限度公式，再由此讨论气体经过极限加热後之状态，并就气体加热前之流速分次声速（ｓｕｂｓｏｎｉｃ），声速（ｓｏｎｉｃ）与超声速（ｓｕｐｅｒｓｏｎｉｃ）三种情况加以比较．在本文所得结论中，有值得吾人注意者即流动气体在某一速度范围之内其温度与速度反因加热而减低．此外声速状态（ｓｏｎｉｃ ｓｔａｔｅ）为任何流动，（ｆｌｏｗ），不论是超声速底或次声速底，经加热後所能达到之极限状态，亦由本文根据极限加热之理论加以证明．在 ｐａｕｌ Ｇｈａｍｂｒｅ与林家翘两先生之“Ｏｎ ｔｈｅ ｓｔｅａｄｙ Ｆｌｏｗ ｏｆ ａ Ｇａｓ Ｔｈｒｏｕｇｈ ａＴｕｂｅ ｗｉｔｈ Ｈｅａｔ Ｅｘｃｈａｎｇｅ ｏｒｃｈｅｍｉｃａｌ Ｒｅａｃｔｉｏｎ”文中会有仝样之结论，共立论系从气体瞬间状态之分析入手，不涉加热限度．本文则从气体起始与终结状态间之关系着手，而以极限加热为讨论中心．如与二氏原文参看可以相中互印证补充。  This paper investigates the general and complete form of slopedeflection equations used in structural analysis. The word "complete" indicates that all the possible deformations (deflections and rotations) and all the strain energies (due to shear, direct stress and flexure) are included in the equations. The definitions, numbers, and relations of member constants are then discussed and the general equations for computing these constants are given. By neglecting the factors of minor importance, the general... This paper investigates the general and complete form of slopedeflection equations used in structural analysis. The word "complete" indicates that all the possible deformations (deflections and rotations) and all the strain energies (due to shear, direct stress and flexure) are included in the equations. The definitions, numbers, and relations of member constants are then discussed and the general equations for computing these constants are given. By neglecting the factors of minor importance, the general form is reduced to the usual slopedeflection equations. Some special forms of such equations which are useful in certain practical problems are also discussed briefly, such as the slopedeflection equations including the effect of direct stress on flexure and the slopedeflection equations of semirigid frames. Slope deflection equations for trussed bents are also presented.  本文旨在:(1)提出完全的角变位移方程,使可精确的解算任何形式的平面刚构,只要其能视为由若干桿件组成即可。这里的所谓“完全”,系指方程中已包括一切可能的形变值在内,而且包括轴向应力及剪应力之影响。(2)全面的讨论桿件常数的定义、数量和相互关系,并供给计算各常数的最一般性公式。(3)将上述全面的和精确的公式逐步简化,以便与目前常用的公式比较。(4)讨论某些特殊情况。  A new species of tapeworm Bothriocephalus gowkongensis sp. nov. is reported for Ctenopharyngodon idellus from Gowkong, near Canton, South China. The parasite is of great economic importance owing to the high mortality of the host caused by the infection and consequently heavy losses to the freshwater fishery industry. A preliminary note is given on the life cycle, which involves unidentified cyclops as intermediate hosts. The eggs are fully embryonated when laid and it is the first Bothriocephalus konwn... A new species of tapeworm Bothriocephalus gowkongensis sp. nov. is reported for Ctenopharyngodon idellus from Gowkong, near Canton, South China. The parasite is of great economic importance owing to the high mortality of the host caused by the infection and consequently heavy losses to the freshwater fishery industry. A preliminary note is given on the life cycle, which involves unidentified cyclops as intermediate hosts. The eggs are fully embryonated when laid and it is the first Bothriocephalus konwn with this phenomenon. From a study of the variation in a large number of specimens of B. gowkongensis sp. nov., the author considers B. opsariichthydis Yamaguti, 1934 a synonym of B. achilognathi Yamaguti, 1934.SPECIFIC DIAGNOSIS: Bothriocephalus Rudolphi, 1808 emended Lühe, 1899, with generic characters. About 3580 mm. in length and 0.51.2 mm. in width. Segments with or without distinct segmentation. Slight indications of secondary segmentation might occur in all segments. Immature segments broader than long, mature segments square and gravid segments longer than broad. Scolex large, fleshy, heartshaped with distinct terminal disc and welldeveloped fleshy bothria. Inner longitudinal muscle bundles extremely weak and sparsely scattered. 5090 testes. Cirrus immediately in front of vagina. Cirrovaginal aperture median or slightly lateral between midline and posterior third of segment. Ovary near posterior of proglottid. Uterus convoluted, voluminous, and confined to median field. Uterine sacmay encroach on posterior border of preceeding segment or be placed some distance away. Vitellaria in complete circle in cortex. Like the testes, they are continuous from segment to segment. Eggs thinshelled, operculated, fully embryonated when laid, measuring 3338 5354μType host: Ctenopharyngodon idellus.Habitat: Intestine.Type: To be deposited with the Department of Parasitology, HunNan Medical College, Canton, China.Cotypes: In author's collection, and to be deposited with the Depertment of Biology, ChungShan University, Canton, China.  1.文中记载草鱼腸中新种絛蟲B. gowkongensisn. sp. 是由广东九江採得的。 2.本蟲促使宿主的死亡率,使淡水渔业受到很大的损失。 3.由头槽絛蟲生活史的初步观察,发现它的卵排出时,已有发育完全的胚胎。 4.从研究大量新种标本的变化中,作者认为B. opsariichthydis Yamaguti, 1934是B. achilognathi Yamaguti, 1934的同种异名。   << 更多相关文摘 
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