甾相 的英文怎麼說

中文拼音 [zāixiāng]
甾相 英文
cholesteric liquid crystals
  • 甾 : 名詞[化學] （有機化合物的一類） steroid
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  1. Abstract : methanesulfonic acid method was used to prepare five acylated chitins. except heptanoyl chitin, four of them, i. e. acetyl chitin, propionyl chitin, butyryl chitin and hexanoyl chitin, had high degree of substitution ( from 1. 5 to 2. 0 ) and exhibited lyotropic liquid crystalline behavior and cholesteric phase. as the length of the side chain increased the critical concentration ( w / w ) somewhat increased from 0. 21 to 0. 26 because the chain rigidity dropped. the critical concentration values of all the four derivatives were much higher than that of chitin ( 0. 12 ) due to the decrease of intramolecular hydrogen bonds. the four acylated chitin can form typical banded texture after being sheared. there minimum concentrations to form banded texture of them were evidently different, varied from 0. 25 ( for acetyl chitin ) to 0. 37 ( for hexanoyl chitin ). these results further indicated that liquid crystallinity decreased while the length of flexible side substituents increased

    文摘:四種羧酰化甲殼素即乙酰化、丙酰化、丁酰化和己酰化甲殼素在二氯乙酸溶液中均呈現膽甾型溶致液晶相.臨界濃度隨側基長度增加而略有增加，衍生物的臨界濃度明顯都比原甲殼素高許多，這些規律都可以用鏈剛性的變化來解釋.四種羧酰化甲殼素在剪切時均能形成條帶織構，而且能形成條帶織構的最低濃度有明顯差別，隨側基長度增加而提高，進一步表明側基較長，液晶性減少
  2. This oil is characterized by relatively low isomerization ratios of steranes, but slightly higher density and viscosity than those of type 1

    該類原油甾烷異構化指標偏低，粘度和密度相對高於第一類原油，但仍為稀油。
  3. The microscopic mechanism of cholesteric liquid crystals

    液晶膽甾相的形成機制
  4. Udp - glucuronosyltransferases ( ugts ) are glycoproteins localized in the endoplasmic reticulum that catalyze the conjugation of a broad variety of endogenous and exogenous lipophilic aglycon substrates ( such as bilirubin, steroid hormone and drugs, insecticide, etc ) with glucuronic acid using udp - glucuronic acid ( udpga ) as the sugar donor. ugts are a gene superfamily of phase ii drug - metabolizing enzymes, they are responsible for the glucuronidation of a significant number of different functional groups ( e. g

    Ugts能催化各種各樣外源和內源的親脂性糖苷配基底物與葡醛酸的結合，該反應是機體清除外源性（如藥物和殺蟲劑）和內源性（如膽紅素和甾體激素）親脂性化合物的一個主要方式，也是藥物相代謝的重要方式。
  5. Since 1980s he has been studying the mechanism of normalization of abnormal blood pressure and the resetting of baroreceptor reflex by acupuncture and somatic nerve stimulation, effects of brain osmoreceptor stimulation on sympathetic nerve discharge and renal activity, the role of vasopressin in body fluid and salt homeostasis, difference in gene expression between hypertensive and normotensive rats, hypertension and cardiac ischemia - induced myocardial remodeling, effect of steroids on the nervous system, etc. with his research achievements, dr. yao was awarded science and technology progress prize sponsored by the state education commission grade a award in 1986, grade b award in 1995 and by the ministry of health grade b award in 1989 and 1993, grade a award of guang - hua science and technology prize 1995, and chinese universities science and technology prize grade b award in 2000

    近二十年來，他主要從事針刺和刺激軀體神經對心血管和腎臟活動的調整作用刺激腦內滲透壓感受器引起的交感神經放電和腎臟活動的改變血管升壓素在心血管活動調節和水鹽平衡中的作用原發性高血壓的相關基因高血壓和心肌梗死引起的心肌重構甾體激素對神經系統的影響等。他的科研成果曾獲得國家教委科技進步獎一等獎一項1986年二等獎一項1995年衛生部醫藥衛生科技進步獎二等獎二項1989 1993年光華科技基金獎一等獎一項1995年中國高校科學技術獎二等獎一項2000年。
  6. Peptic ulcers related to nsaids in the elderly

    老年人非甾體抗炎藥相關性消化性潰瘍病
  7. The form of the interaction potential between molecules is assumed to be the same with which is used in the theory of cholesteric phase

    分子間相互作用勢與膽甾相微觀理論中所採用的作用勢相同。
  8. There are some disputes about the potential vx. it had not been proved by far that the form of the chiral potential vx that is generally accepted can induce the cholesteric phase

    關于v _ x的形式存在爭議，並未從理論上證明目前採用的形式一定會導致膽甾相的螺旋性結構。
  9. The microscopic mechanism of the helix structure is one of the most important questions for cholesteric phase, from the general view, which is because there are chiral potential vx

    膽甾相理論的一個核心問題是導致其螺旋性結構的微觀機制。一般認為這是由於分子之間存在手性作用勢v _ x 。
  10. In this paper, we introduce quantum theory into the liquid crystals in order to research the collective effect ( i. e. the physics effect produced by many - body effect and collective excitation ). in this way, we research the microscopic theory of nematic phase and cholesteric phase

    為了探索其集體效應（多體效應以及集體激發導致的物理效應） ，本文將量子理論引入到液晶體系，研究向列相和膽甾相的微觀理論。
  11. Clinic observation on effects of helicobacter pylori - infection on nonsteroidal anti - inflammatory drugs associated gastritic damage

    幽門螺桿菌感染在非甾體抗炎藥相關性胃病中作用的臨床觀察
  12. Steroids, and the closely related sterols, are compounds found in animals and plants.

    甾類和與它密切相關的甾醇是在動物和植物中存在的化合物。
  13. This course requests students to know well the structure, name, the property, the organic functions groups compound converts each other and law, stereoscopic chemistry characteristic of the organic compound ( do not contain the heterocyclic compounds, sugar, terpenoids and the steroids ), to acquaint with that the organic chemistry of the typical reaction process and the general method of study organic chemistry ; understand each kind of representative ' s organic compound and its application

    本課程要求學生掌握有機化合物（不含雜環、糖類、萜類及甾體化合物）的結構、命名、性質、官能團化合物之間的相互轉換及其規律和立體化學特徵；熟悉典型的有機化學反應歷程及有機化學研究的一般方法；了解各類代表性有機化合物及其應用。
  14. The present paper covers the study on textured exchange of nematic - chocesteric liquid crystals with negative decectric anisotropy under electric field induction

    摘要對負性向列-膽甾相液晶在電場作用下的織構改變做理論分析。
  15. Like other liquid crystals ( lc ), chorlesteric phase liquid crystal ( clc ) not only owns liquidity, deformability and viscosity of liquid, but also holds the optical anisotropy of crystal

    膽甾相液晶同其他液晶態物質一樣，既有液體的流動性、形變性、粘性，又具有晶體的光學各向異性，是一種優良的非線性光學材料。
  16. At present, the planar structure of clc can be acquired by two methods. one is treating the panel of lc cell by orienting and rubbing, the other is by forming polymer net in the lc. the both method can be used at the same time

    目前，膽甾相液晶平面排態的獲得主要有兩種方法:一是通過對液晶盒的兩個基板表面進行取向摩擦;二是通過在膽甾相液晶中形成聚合物網路;當然也有二者兼用的。
  17. Then, the numerical calculation to the reflection light spectrum is deduced by utilizing berremam ’ s 4 4 matrix, which will supply theoretical gist to the following experiments. at last, the psct with better planar structure is achieved, and the psct is bistable at zero field

    本論文首先簡要介紹了膽甾相液晶自身特有的光學特性，然後利用berrenman 』 s4 4矩陣方法對膽甾相液晶的反射光譜進行了數值理論計算，從而為下一步製作psct提供了理論依據。
  18. Because of the segment of the orienting and rubbing cost high in the whole lcd production craft, omitting it can save cost of production. the method of manufacturing polymer stabilized chorlesteric texture ( psct ) with better planar structure under without orienting and rubbing is searching in this article. first, the special properties of clc are introduced

    因為摩擦取向在整個液晶生產工藝中成本很高，如果省去此環節，將會極大的節約生產成本，因此本文試圖尋找一種在省去摩擦取向環節的前提下製造具有較好平面排列態的聚合物穩定的膽甾相液晶（ psct ）的方法。
  19. The emphasis of this article is studying the influence of the polymer net in the clc to the reflected spectrum. at the same time, under the laboratory condition in possession, a design scheme of manufacturing psct with better planar structure, which needn ’ t orienting and rubbing, is found out by optimizing the craft condition like the species of polymer monomer, the concentration of monomer, the polymerization conditions ( temperature, time, uv light intensity )

    本論文的重點是研究膽甾相液晶中聚合物網路對反射譜特性的影響，在實驗室現有的條件下，通過改變聚合物單體材料、聚合物單體濃度及聚合條件（紫外光光強、光照時間、聚合溫度） ，並結合一定的理論指導和實驗現象分析，找出了一種製作具有較好平面取向的psct的設計方案。
  20. These special optical properties make clc possess of great potential application such as testing and analyzing, using as broadband reflective polarizer or circular polarization filters and field - display and so on. the most of applications are relevant to the choice reflection property. this property depends on molecules arrangement of its planar structure

    膽甾相液晶的這些獨特的光學特性就決定了它有著很大的潛在應用價值如:測試分析、寬帶反射式偏振片、圓偏振濾光片及場致顯示等，這些應用均與膽甾相液晶的平面排列態的選擇反射特性有著很大的關系，而其選擇反射特性主要取決于液晶分子的排列狀態。
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