ctab 中文意思是什麼

ctab 解釋
代十六烷基三甲胺
  1. In the present study, aflp ( amplified fragment length polymorphism ) markers was used to examine population of abies yuanbaoshanensis in order to understand the level of population genetic variation and genetic structure. the result would help to evaluate its evolutionary potentiality and the degree of being endangered and could provide scientific basis for making right protection strategy. high - quality dna was extracted using ctab method from those tender leaves of forty - three fully - developed trees in population abies yuanbaoshanensis

    本研究選用一種高效的檢測遺傳變異的分子標記? ? aflp技術來分析元寶山冷杉種群的遺傳多樣性，旨在了解該種群在分佈區內的遺傳變異水平和遺傳結構情況；研究結果將有助於更清楚地認識這一瀕危類群的生存潛力和瀕危程度，而且可以為制定何種挽救和保護措施提供科學的依據。
  2. A method to calculate quantitatively the adsorption volume or adsorption space of per mass of adsorbent derived from both the adsorbed molecule volume and the maximum adsorbance of a solute in an adsorption isotherm under a given experimential condition is presented firstly for a solid / liquid adsorption system of the solute in a dilute aqueous solution. this method is suitable for not only mono - layer adsorption, but also mani - layer adsorption and micelle adsorpion of surfactant constructed by hydrophile and lipophile groups. therefore, the surface concentration of the adsorbate, cs, deduced from the adsorption volume is possessed of the meaning of true concentration, and the value of the patition coefficient of the adsorbate between solid and liquid phass, p, attained by the cs and the c, solution concentration of the adsorbate, can be accurate. the foregoing a set of calculations are presented for the solid - liquid adsorption systems consisted of the wool fiber and separately dodecyltrimethyl - ammonium bromide ( dtab ) and hexadecyltrimethyl - ammonium bromide ( ctab ) in this paper. this provides a strong basis for adsorption thermodynamic investigation of adsorbate

    對稀溶液中溶質的固/液吸附體系，首次提出了根據吸附分子體積和實驗條件下吸附等溫線中的最大吸附量計算單位質量吸附劑的吸附體積或吸附空間的方法.此法適用於單層吸附，也適用於多層吸附和具有親水親油結構的表面活性劑分子的膠團吸附.由此，吸附質的表面相濃度cs具有真實濃度的含義，相應地，計算得到的溶質的固/液分配系數p就有了準確值.分別計算由溴代十二烷基三甲銨（ dtab ）和溴代十六烷基三甲銨（ ctab ）與羊毛纖維構成的液/固體系分配系數等，為溶質吸附的熱力學研究奠定了基礎
  3. The results suggested that the ph value, the type of monomers, the type, concentration and surface properties of inorganic nanoparticles, the type and concentration of emulsifier have a great influence on the encapsulating emulsion polymerization and the obtained latex stability. if selecting cationic emulsifier ( ctab ), low water soluble monomers ( such as ba, st ) and hydrophobic nano - silica, the inorganic nanoparticles would be encapsulated by polymers through ultrasonic irradiation successfully under alkalescent condition

    系統研究了ba 、甲基丙烯酸甲酯（ mmal苯乙烯舊t ）以及它們的共聚體系在超聲輻照作用下包裹聚合的主要影響因素，結果表明： ph值、單體的種類、無機納米粒子的種類、濃度及表面性能、乳化劑的種類及濃度等對超聲輻照包裹乳液聚合以及復合體系的穩定性有較大的影響。
  4. With the improved method of ctab, the genomic dna extracted form plum and other species close to p. mume in genetic relationship could be directly used in pcr amplification, with good results obtained

    選用改良ctab法提取的梅及其近緣種的基因組dna可直接用於pcr擴增分析，且效果良好。
  5. In this dissertation, the hydrosol of moo3 was prepared by precipitation method. the effect factors on hydrosol were discussed systematically. moo3 organosol was obtained by using ctab to modify the nanoparticles in moo3, hydrosol and n - pentanol to extract moo3 nanoparticles modified by ctab

    採用表面活性劑ctab對moo _ 3水溶膠中的納米粒子進行表面修飾，通過正戊醇萃取制備了moo _ 3納米有機溶膠，對制備有機溶膠的條件進行了系統地研究。
  6. Polybenzoxazine / vermiculite hybrid nanocomposites were prepared from two kinds of polybenzoxazine precursors and two kinds of organically modified - vermiculite minerals and expanded - vermiculite which were consisted of vermiculite, hydrobiotite and phlogopite. after treatment of vermiculite minerals by hexadecyl trimethylam monium bromide ( ctab ), the d001 of vermiculite layers of vermiculite mineral increased from 1. 43nm to 2. 67nm and developed a d002 = 1. 34nm

    本文分析了蛭石精礦和膨脹蛭石的組成和結構，用十六烷基三甲基溴化銨（ ctab ）進行了有機化處理，再通過熔融或溶液混合插層苯並嗯嗪樹脂（ ben ）制備了ben插層蛭石納米復合材料，並採用蒙脫土進行了對照實驗。
  7. Among the three methods used in the experiment of dna extraction, only ctab, adding pvp in the dna isolation step, had effectively reduced the disturbance from fiber or other plastids and extracted suitable genomic dna as template for rapd process. pcr amplifications were performed in a final volume of 25 mm3 containing 0. 5 units taq polymerase, 2

    通過在抽提緩沖液加入2的pvp 、並用異丙醇和乙醇沉澱基因組dna等改良措施， ctab法能避開大量纖維、多糖的影響，有效地從不同屬種的棕櫚科植物的幼嫩葉片中提取並純化了適合rapd的基因組dna 。
  8. Carbon black used in rubber products - determination of specific surface area - ctab test method

    橡膠用炭黑比表面積測定
  9. Kinetic study of effects of surfactant ctab, las and tween80 on the alkaline hydrolysis of iso - amyl acetate

    80對乙酸異戊酯堿性水解影響的動力學研究
  10. The conduction activation energies of w o microemulsions in ctab c4h9oh c7h16 h2o system

    型微乳液的導電活化能
  11. The studies show they are practical and promising functional molecules for opto - electronics. the following works put fc16ab to study physical chemistry properties of its monolayer and lb films with other molecules. the conclusions are as listed below : the surface pressure - molecular area ( - a ) isotherms of fc16ab and hexadecyltrimethylammonium bromide ( ctab ) on aqueous subphases were studied

    結論如下：在純水亞相上，我們通過比較十六烷基甲銨鹽（ ctab ）和fc _ （ 16 ） ab的單分子膜壓力-單分子面積（ - a ）等溫線，得到二茂鐵片段的在氣液界面的取向隨著膜壓的增加而發生改變。
  12. The results suggest : dna samples that were extracted using the modified ctab method were successfully amplified by rapd ; rapd technique showed some potential to be useful in determining relationship between species within the two genera. the taxonomic position of ? linza, which is problematic based in morphological classification, showed a closer relationship with ulva

    結果表明，應用改進的ctab法獲得的dna樣品可成功用於rapd擴增； rapd技術適用於這兩個屬種間關系鑒定；基於形態分類有爭議的緣管滸苔的分類地位在rapd分析中表現出與石蓴屬更近的親緣關系。
  13. It was revealed that the hexagonal order was destroyed and the phase transition from hexagonal to amorphous structure with the increment of manganese ion, and with the appropriate neutral hexadecylamine ( hda ) with cetyltrimethylammonium bromide ( ctab ) as mixed template, mn - mcm - 41 was synthesized with well uniformly pore size and hexagonal mesostructure for the additional function of n - metal covalent bond, and the ordered structure was mediated by the influence on the packing parameter

    表明隨著mn ~ （ 2 + ）引入量的增加，導致介孔長程有序結構的破壞，最終引起由六方相向無定型相的轉變。適量中性表面活性劑十六胺的引入以形成混合模板劑，通過在原有靜電作用基礎上增加n -金屬鍵作用，合成結構較為完整的錳摻雜mcm - 41材料。
  14. At last, ctab - dna and sds - dna methods are used in this experiment. on the basis of optimizing experiment procedure and pcr system of the materials, the initial reversion transcription system and orthologus gene cloning technique are established

    對這3種方法比較后，確定本實驗採用ctab - dna酶消化法和sds - dna酶消化法提取白樺雄花芽組織的總rna 。
  15. Since there are more things in the bud tissue of the male flower, such as phenolic compounds, polysacchrides, proteins and some other secondary metabolites, three methods used to isolate rna are tested in this assay, which are the enzyme digesting methods of ctab, ctab - dna and sds - dna

    克服了常規方法和試劑盒無法提取出富含酚類化合物、多糖和一些尚無法確定的次級代謝產物的白樺花芽組織rna的障礙，提出了3種白樺雄花芽組織rna的提取方法： ctab 、 ctab - dna酶消化法和sds - dna酶消化法。
  16. However, both the ctab and sds - ctab methods were only adequate to be used to extract dna of some strains of penicillium, and the dna bands of some strains were clear, but others were not obvious

    另外一些菌株則提取不出譜帶清晰的dna 。而氯化芐法適合於供試的所有青黴菌株的dna提取，所有菌株的dna凝膠電泳圖譜帶清晰，效果很好。
  17. Benzyl choeide method, ctab method and sds - ctab method ) were used to extract dna from eleven strains of penicillium, the results showed that the benzyl choeide method was able to be used to extract the dna of those penicillium strains, and bands resulting from gel electrophoretic separations were very clear

    比較了ctab 、 sds - ctab 、和氯化芐這3種dna提取方法提取青黴dna的效果。實驗結果表明： ctab法和sds - ctab法只能適合於部分青黴菌株的dna提取。
  18. Standard test method for silica, precipitated, hydrated - ctab cetyltrimethylammonium bromide surface area

    沉澱的水合硅石的標準試驗方法. ctab表面積
  19. Study on the character of mnco3 synthesized in the system of ctab, alcohol, de - ionized water

    水體系制備碳酸錳的性質研究
  20. 2 ) the method of proteinase k isolation and the method of ctab isolation had been compared carefully while extracting the genome dna from crickets. the result showed the method of proteinase k isolation of total dna was more suitable for the extraction of total dna from insects of grylloidea

    2 ）在提取蟋蟀總科昆蟲的基因組dna時，比較了ctab法和蛋白酶k法兩種方法，結果顯示蛋白酶法更適用於蟋蟀總科昆蟲的基因組則a的提取。
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