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listed
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     A Study on the Evolution Mechanisms and Promotion Strategies of the Core Competence of Listed Companies
     上市公司核心竞争力演化机制与提升策略研究
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     Research on Capital Structure of China's Listed Company
     中国上市公司融资结构研究
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     A Study of Capital Structure of China's Listed Company Major: Political Economics
     中国上市公司资本结构研究
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     Study on Accounting Information Disclosure of Listed Companies in China
     我国上市公司会计信息披露问题研究
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     The Positive Study on the Financial Distress Prediction of Listed Companies
     上市公司财务困境预测实证研究
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     USING CIRCLE ARCS OF BEST UNIFORM APPROXIMATION & TOLERANCE SMOOTH TO FIT LISTED POINTS OF PLANE CURV
     最佳一致逼近及容差平滑圆弧拟合平面点列
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     A Study of LISTED BY NAME in the Regulations of Dangerous Cargo Transportation
     危险货物运输规则中“列名”的研究
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     A COMPARATIVE ANALYSIS ON THE TECHNICAL DATA OF THE PRODUCTS OF AGAR AND AGAROSE LISTED ON THE 1992 CATALOG OF SIGMA
     对西格玛(SIGMA)公司1992年产品目录中琼胶和琼胶糖技术数据的比较分析
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     S7-200 CPU216 is adopted as central processing unit of the system. Temperature is collected with EM235. Variational temperature is listed and parameters are set by TD200.
     系统采用S7-200系列的CPU216作为中央处理单元,以热电偶模块EM235采集温度信号,以文本显示器TD200显示动态数据和设置参数。
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     15 species are listed in the list of CITES(5 species in appendix I,4 species in appendix Ⅱ and 6 species in appendix Ⅲ). 12 species are listed in the list of China Red Data Book of Endangered Animals in which there are 2 endangered species,1 rare species and 9 vulnerable species.
     被列入《濒危野生动植物种国际贸易公约》的兽类15种(附录Ⅰ5种、附录Ⅱ4种、附录Ⅲ6种),被列入《中国濒危动物红皮书》的兽类有12种(濒危物种2种、稀有种1种、易危物种9种)。
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     Of Listed Companies
     论上市公司
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     results were listed.
     接下来文章给出了平台的功能测试结果。
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  listed
In this paper we classify?-graded transitive Lie superalgebras with prescribed nonpositive parts listed in [K2].
      
Some computational results obtained by microcomputers are listed.
      
A local convergence theorem and five semi-local convergence theorems of the secant method are listed in this paper.
      
An array of complicated structures of the natural products synthesized over the last two years is also listed to serve as a convenient lead to the original literature for the prospective interested readers.
      
The experimental results are listed below: 1) 5-aminolevulinic acid (ALA) synthetic rate increased as nitrate concentrations supplied to larch seedlings increased from 1 to 8 mmol/L.
      
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The Mannich bases derived from phenylacetone (Ⅰ,R=Me)and dibenzyl ke- tone (Ⅰ,R=CH_2Ph) prepared in our previous work gave expected semicarba- zones(Ⅱ) in neutral or slightly acidic media.Degradation of their methiodides gave vinyl ketone semicarbazones (Ⅲ).The structure of the latter was shown by their characteristic ultra-violet light absorption properties,and they gave in- tense absorption bands near 260 mμ.The pyrazolinecarboxamides (Ⅳ),if formed,would behave more like saturated semicarbazones such as Me·CO·CHMePh...

The Mannich bases derived from phenylacetone (Ⅰ,R=Me)and dibenzyl ke- tone (Ⅰ,R=CH_2Ph) prepared in our previous work gave expected semicarba- zones(Ⅱ) in neutral or slightly acidic media.Degradation of their methiodides gave vinyl ketone semicarbazones (Ⅲ).The structure of the latter was shown by their characteristic ultra-violet light absorption properties,and they gave in- tense absorption bands near 260 mμ.The pyrazolinecarboxamides (Ⅳ),if formed,would behave more like saturated semicarbazones such as Me·CO·CHMePh and CH_2Ph·CO·CHEtPh,which gave maxima located at about 230mμ.The vinyl ketone semicarbazones could not be converted to the cyclic compounds (Ⅳ) by treatment with concentrated sulphuric acid.It was recalled that Δ~2-isoxazolines,beside vinyl ketone oximes,were obtained by us previously from the degradation of Mannich base oxime methiodides. Both the dimethylamino(I:R=CH_2Ph,R'=Me) and the diethylamino(I: R=CH_2Ph,R'=Et) compounds gave the identical product (Ⅷ) on treatment with semicarbazide hydrochloride in the presence of excess sodium acetate.It was recalled that an abnormal compound,m.p.101-102,was formed by these two Mannich bases on treatment with hydroxylamine hydrochloride and sodium acetate.This product might be (Ⅶ),formed by elimination of a mole of hy- droxylamine from (Ⅸ),which is analogous to (Ⅷ). Treatment of the Mannich base (I,R=CH_2Ph,R'=Me) itself with sodium acetate gave dibenzyl ketone.This is the reverse change of the original Mannich reaction.However,its methiodide,on degradation with sodium hydroxide, gave a vinyl ketone which readily dimerised into a dihydropyran (Xa or Xb). Several expected pyrazolines were obtained from the Mannich bases and phenylhydrazine.Their ultra-violet light absorption characteristics were listed.

几个 Mannich 碱在中性或微酸性的情况下制成它们的缩氨基脲,其中一个Mannich 碱在碱性情况下形成一个含有两分子氨基脲的物质。那些 Mannich 碱缩氨基脲的季铵碱当在碱性情况下递降时生成乙稀酮的缩氨基脲,而不生成环状的化合物(Ⅳ)。从二苯甲基酮衍生的一个 Mannich 碱经醋酸钠作用后变为原来的1,3-二苯基丙酮,但这个 Mannich 碱的季铵盐经碱作用后成为乙稀酮,而这个乙烯酮迅速贰聚。几个4,5-二氢隣二氮杂茂自 Mannich 碱如预期地形成。上列许多产物的紫外线光谱曾经测定。

1. In South Sinkiang, eggs deposited by the migratory locust, Locusta migra-toria migratoria L., in Aug. 1952 hatched ih the latter part of April, and adultsemerged on June 6 the following year. This species has only one generation ayean and the eggs remain underground for a period of 8 months. 2. Calliptamus italicus L. can be easily identified by the presence of a longprosternal spine between the fore coxae. The distal portion of the cercus inthe male individual is divided into three lobes, the middle one...

1. In South Sinkiang, eggs deposited by the migratory locust, Locusta migra-toria migratoria L., in Aug. 1952 hatched ih the latter part of April, and adultsemerged on June 6 the following year. This species has only one generation ayean and the eggs remain underground for a period of 8 months. 2. Calliptamus italicus L. can be easily identified by the presence of a longprosternal spine between the fore coxae. The distal portion of the cercus inthe male individual is divided into three lobes, the middle one being shorterthan the upper one. 3. Heavy damage was done to pasture land by Gomphocerus sibericus L.. Thisspecies is characterized by the swellen terminal segments of the antennae. Inthe male individuals, the tibiae of the fore legs are also enlarged. 4. Dociostaurus kraussi Ing. may be identified by the presence of an X-shaped marking on the pronotum and the much eniarged markings on themetazone. 5. Ramburiella turcomana F-W. has a slant face Which meets the vertexat an acute angle. Besides the X-shaped marking on the pronotum, there isanother broad line running along the median ridge. 6. The distinguishing Character of the grasshopper Oedaleus decorus Germ.is the blackish band that runs across the hing wings. The pronotal medianridge is high, with a very promineat X-shaped marking on its sides. 7. In Sphingonatus salinus (Pall) the small prozone with a high median ridge,and the two bands across the hind wings are quite characteristic. 8. In this paper distributions of the above-mentioned species are listed. Des-criptions of the egg capsules and the sculpturing on the egg shells have beenmade for the purpose of facilitating specific identification in the field.

(一)新疆蝗虫种类繁多,发生为害面积亦大。1953年全新疆发生面积为762,000公顷,共防治95,703公顷。经两年来的初步观察,蝗虫中为害性较大,分布较普遍的有下述九种。 1.迁移飞蝗一年发生一代。1952年8月所产之卵,最早于1953年4月下旬孵化,至6月6日变为成虫。蝗卵在地下发育阶段,长达8月之久。 2.意大利蝗主要特征在其突出之前胸腹板刺;前胸背板有中脊和侧脊;雄虫尾须末端分裂为三叶,中叶之末端不及上叶末端。 3.西伯利亚蝗为牧区中牧草的大敌害。成虫主要特征为触角末端变粗;雄虫前足胫节膨大如梨状。 4.克鲁斯蝗沟后区上之花纹变宽,成三角形;前翅不超过后足膝部;后足胫节红色。而鞑靼蝗沟后区上的花纹前端并不变粗。 5.侧视土克曼蝗头部倾斜;前胸背板上除有较长大的X形图案外,中脊上尚有纵行花纹;后足腿节和胫节黄色,间隔以黑色斑纹。 6.轮翅蝗前胸背板之中脊拱起,其两侧有X形图案;后翅基部淡黄绿色,中部有一条宽而弯曲的黑色条纹,不及后翅的后缘。 7.盐地圆背蝗沟前区小而狭隘;后翅基部淡红色,中部及翅端各有—条宽的黑色条纹。与盐地圆背蝗相似者,尚有八纹圆背蝗。 (二)对上述九种蝗虫之分布,卵囊及卵壳上之花纹...

(一)新疆蝗虫种类繁多,发生为害面积亦大。1953年全新疆发生面积为762,000公顷,共防治95,703公顷。经两年来的初步观察,蝗虫中为害性较大,分布较普遍的有下述九种。 1.迁移飞蝗一年发生一代。1952年8月所产之卵,最早于1953年4月下旬孵化,至6月6日变为成虫。蝗卵在地下发育阶段,长达8月之久。 2.意大利蝗主要特征在其突出之前胸腹板刺;前胸背板有中脊和侧脊;雄虫尾须末端分裂为三叶,中叶之末端不及上叶末端。 3.西伯利亚蝗为牧区中牧草的大敌害。成虫主要特征为触角末端变粗;雄虫前足胫节膨大如梨状。 4.克鲁斯蝗沟后区上之花纹变宽,成三角形;前翅不超过后足膝部;后足胫节红色。而鞑靼蝗沟后区上的花纹前端并不变粗。 5.侧视土克曼蝗头部倾斜;前胸背板上除有较长大的X形图案外,中脊上尚有纵行花纹;后足腿节和胫节黄色,间隔以黑色斑纹。 6.轮翅蝗前胸背板之中脊拱起,其两侧有X形图案;后翅基部淡黄绿色,中部有一条宽而弯曲的黑色条纹,不及后翅的后缘。 7.盐地圆背蝗沟前区小而狭隘;后翅基部淡红色,中部及翅端各有—条宽的黑色条纹。与盐地圆背蝗相似者,尚有八纹圆背蝗。 (二)对上述九种蝗虫之分布,卵囊及卵壳上之花纹,均分别叙及;并附有作者原绘图六幅。在调查蝗虫分布密度及蝗种鉴别上,识别卵囊较有根据。

The design and erection of the air-conditioning system used in the spinning and weaving research laboratory in this institute has been described. The total floor space of this research laboratory is about 250 square meters; and the laboratory contains three rooms for carding and drawing, spinning and weaving respectively. Air is treated in a spraying chamber and then conducted into the three rooms. Devices are provided to regulate and control automatically the relative humidity in the rooms seperately. Means...

The design and erection of the air-conditioning system used in the spinning and weaving research laboratory in this institute has been described. The total floor space of this research laboratory is about 250 square meters; and the laboratory contains three rooms for carding and drawing, spinning and weaving respectively. Air is treated in a spraying chamber and then conducted into the three rooms. Devices are provided to regulate and control automatically the relative humidity in the rooms seperately. Means of heat insulation of the building are described and the calculated results and the coefficients used in the calculatons are listed and tabulated. The specifications of the main equipments selected are shown at the end of this paper and the constructions of the spraying chamber and air ducts are briefly described. Polarographic determination of Aluminum in the Coagulating Bath of Viscose......S. C. Wang and T. Sun (51) 1. The present paper describes the methods and precautions of the isolation and the polarography of aluminum in the coagulation bath of viscose. 2. It has been found in our experiment that the optimum pH is 4 for the polarographic analysis of aluminum. 3. During the polarographic analysis of aluminum, the presence of ammonium ion causes the significant appearence of hydrogen wave. 4. Potassium chloride can be used successfully as the supporting electrolyte instead of lithium chloride in this experiment. 5. The removal of iron is essential in the polarography of aluminum at pH 4, otherwise the height of aluminum wave drops markedly.

本文叙述了一個小型紡織工藝試驗室自動控制温濕度的装置的設計及安装資料。空氣經過同一噴霧室處理後,分別送至梳棉與併條、粗紡與精紡、以及織機間,使各室維持所需要的濕度,各室的溫濕度能加以調節並自動控制。文中叙述了自動控制的方法。 對試驗室的冷熱負荷、通風量、喷霧量、冷却和加熱設備、以及風道的布置都進行了具體計算,並且列出所選用的各種必要的係數值和計算公式。所選用的調節設備各機件規格附列在本文之末;房屋圍護層的結構,喷霧室的結構和風道的結構則分述於有關各段之中。 設計的條件如下: 粗紡及精紡間 夏季最高温度(最大冷負荷時) 30℃; 冬季最低温度 20.5℃; 最高相對濕度 60%。(可調節) 梳棉及併條間 夏季最高温度(最大冷負荷時) 31.5℃; 冬季最低温度 22℃; 最高相對濕度 55°%(可調節)。織機間 夏季最高温度(最大冷負荷時) 28℃; 冬季最低温度 18℃; 最高相對濕度 75°%(可調節); 車間的面積共約250平方公尺。

 
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