molecular concentration 中文意思是什麼

molecular concentration 解釋
分子濃度
  • molecular : adj. 分子的,由分子形成的,分子內[間]的。adv. -ly
  • concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
  1. Using molecular imprinting method, the 1, 3 - dimethylxanthine theophylline, tho molecular recognition membranes, containing an segments as membrane formation sites and aa segments as functional sites, were prepared by the phase inversion technique. here, tho was selected as a template molecule. the hydrogen bonding between aa segments and the tho templates was measured by ft - ir and nmr. the tho templates can be removed from the membrane through washing with acetic acid aqueous solution. the permeation of tho through the membranes is far more than that of 1, 3, 7 - trimethylxanthine caffeine, caf, which demonstrated the function of tho molecular recognition of the membrane. the results also show that the increase of the tho templates concentration in the cast solution caused an increase of tho amounts taken into the copolymer membrane

    Ft - ir及nmr測試結果表明：制備的高分子膜中， tho模板分子和膜中的丙烯酸功能殘基存在著氫鍵鍵合作用。大量的極性醋酸水溶液可抽出膜中的模板分子。 tho溶液和與模板分子具有相似結構的1 ， 3 ， 7 -三甲基黃嘌呤咖啡因， caf溶液的基質透過實驗結果：進入膜結構中tho分子的量遠大於caf分子，這表明制備的高分子膜具有tho分子識別功能。
  2. Increasing ultrasound intensity in the range of cavitation threshold and cavitation peak value, decreasing monomer concentration and increasing the temperature make the induction period shorter. under optimized reaction conditions, the conversion of ba can reach 90 % in 11 min at high n2 flow rate the viscosity average molecular weight of the obtained pba reaches 5. 24 106. the molecular weight of pba varies with ultrasonic irradiation time, indicating that the ultrasonic induced emulsion polymerization is dynamic and quite complicated, polymerization of monomer as well as degradation of polymer occurs concomitantly

    一、實現了無常規化學引發劑存在下的超聲輻照引發丙烯酸正丁酯（ ba ）間歇乳液聚合，制備了pba納米粒子，在11min內轉化率達到90 ，分子量達5 . 24 10 ~ 6 ，隨反應時間的延長而降低，表明超聲輻照引發乳液聚合是一個動態的復雜過程，單體的聚合和聚合物的降解同時發生。
  3. As the concentration of pes solution increases, the pure water flux decreases and the clearance rates of low - molecular weight substances such as urea and creatintine first increase, then decrease, and increase slightly at last

    隨著鑄膜液濃度的上升，水通量呈現總體下降的趨勢；膜對低分子物質的去除率先上升，然後下降，隨后又略有上升。
  4. For chitosan, when the concentration of chitosan is under 0. 1mg / ml, the structure of molecular chain can be observed by afm. at the same time, the refined structure of lyotropic liquid crystal of chitosan and the changes of structure were studied. films with liquid crystalline texture can be prepared from diluted solutions which concentration is lower than critical concentration of liquid crystal

    對于殼聚糖（ chitosan ） ，通過afm直接對殼聚糖進行分子結構水平的觀察研究，發現在濃度低於0 . 1mg ml的稀溶液中用afm可以清楚觀察到糖鏈間形成的環狀或螺旋結構，以及鏈內側枝繞合排列的樹枝狀結構，這種現象是由於糖鏈間和糖鏈內的氫鍵締合所致。
  5. Technique and condition of developing membrane such as thickness of support layer, concentration of coating solution, coating time, ph value of coating solution, concentration of small molecular additive in coating solution, concentration of cross - linking agent, cross - linking time and composite times were studied

    對制膜工藝條件如基膜厚度、塗層液濃度、浸塗時間、塗層液ph值、塗層液中小分子添加劑的含量、交聯劑類型、交聯劑濃度、交聯時間及復合次數對納濾膜性能的影響進行了研究。
  6. Recently, some new studies suggest that small cytokine peptide - mimics can function as the agonist or antagonist of cytokine receptor, and these small molecular peptides can be synthesized easily and oral adminstration with high concentration. based on these work, we have tried to set up experiment on tnfa - binding peptides and tnfa mimotopes which may be as leads of tnfa antagonist

    近年來的研究發現，小分子細胞因子模擬物具有細胞因子受體激動劑或拮抗劑的作用，且小分子模擬物因容易合成並能夠給予高濃度、可口服等優點使其具有更加廣闊的研發與應用前景。
  7. It was found that three polysaccharides had no effect on growth performance of broilers relative to the control during the 28day trial, but affected the immunity in a different way ; they all increased bursa index significantly ( p < 0. 01 ), achyranthan ( ach ) also increased hi titers significantly ( p < 0. 05 ) and lymphocyte proliferation ( p = 0. 12 ), three polysaccharide also significantly affected serum index, they increased serum albumin and calcium concentration significantly. the result indicates that smaller molecular weight polysaccharide may be more effective than larger ones in stimulating immunity when administered orally

    研究發現：三種多糖對肉雞生產性能無顯著影響，但對免疫功能有一定影響：三種多糖均顯著提高了法氏囊指數（ p 0 . 01 ） ，牛膝多糖還顯著提高了肉雞新城疫抗體滴度（ p 0 . 05 ） ，對外周血淋巴細胞轉化率也有一定影響，但差異不顯著（ p = 0 . 12 ） ，三種多糖對肉雞anae陽性率及脾臟、胸腺指數均無顯著影響。
  8. Lactide were investigated. the key factors affecting the polymer intrinsic viscosity were found to be monomer recrystallization times, stannous octoate concentration and polymerization time. the thermal stabilizing agent did not significantly affect the polymer molecular weight. the polymer with a viscosity average molecular weight beyond 200000 was fairly reproducible by optimizing the polymerization conditions. it was found that poly

    單體重結晶次數辛酸亞錫濃度聚合時間等條件均是影響聚合物特性粘數的重要因素。熱穩定劑對聚丙交酯的分子量幾乎沒有影響。優化聚合條件可以獲得粘均分子量大於200000的聚丙交酯材料，聚合結果具有良好的重復性。
  9. The support membrane is polyethersulfone ultrafiltration membrane, the concentration of polyacrylic acid was selected at 0. 05wt %, a suitable paa / pei ratio was 1 / 5 - 1 / 10 with a number of 4 bilayers. the molecular weight of paa was 4 000 000. the corresponding filtration time of the first paa layer range was 10 minutes while the reaction time was 20 minutes

    基膜選用聚醚碸超濾膜，聚丙烯酸濃度為0 . 05wt % ，聚丙烯酸與聚乙烯亞胺濃度配比為1 / 5 - 1 / 10 ，復合四層， paa分子量4000000 ，首層過濾時間10min ，過濾反應時間20min 。
  10. The greater the molecular weight or the concentration of organic substance was, the longer the length of the filter period was

    進水有機物濃度和分子量影響著過濾周期的長短，高濃度、大分子的腐植酸則濾柱過濾運行周期長。
  11. In addition, chondroitin sulfate / chitosan composite films are self - assembled through electrostatic attraction on the positively charges mica substrate. the interaction and mechanism of forming the composite films were introduced. when the concentration of chitosan is 5 mg / ml and the concentration of chondroitin sulfate is 1 mg / ml, the composite films exhibited a good miscibility at a molecular scale. this kind of composite films is promising in the field of medical materials

    另外，也研究了草酸鈣在硫酸軟骨素自組裝膜上受控凝集結晶的現象，發現當硫酸軟骨素的濃度為1 . 0mg ml時在雲母表面形成的網狀基底可以誘導過飽和的草酸鈣溶液凝集結晶形成liesegang環，為深入研究尿結石中環結構的形成提供了一定的實驗依據。
  12. Surface plasmon resonance immunosensor is a relatively new immunoassay technique and has been receiving more and more attention in recent years. however, a major disadvantage of spr for bioanalytical applications is that low concentration or low molecular mass analytes could not be detected directly. therefore, it is a challenging task to develop strategies for improving the detection limit sensitivity of spr. in this paper, authors present a novel strategy for improving the sensitivity of spr immunosensing using streptavidinbiotinylated antibody complex. it is proven that the amplification strategy causes a dramatic improvement of the detection sensitivity. this amplification strategy is based on the construction of a molecular complex between streptavidin and biotin labeled protein. the complex can be formed in a crosslinking network of molecules so that the amplification of response signal will be realized due to the big molecular size of complex

    將鏈霉親和素-生物素系統用於表面等離子體共振免疫傳感的信號放大，實時檢測了人免疫球蛋白g higg的蛋白濃度。發生免疫反應的傳感片和生物素化抗體反應后，傳感片表面的一層生物素分子隨后與鏈霉親和素-生物素化抗體復合物中的鏈霉親和素的活性位點發生親和反應，從而使傳感片表面特異健合的物質質量顯著增加，大大提高了免疫檢測的靈敏度和檢測限。免疫反應經放大后，可檢測0 . 00510g ml濃度區間內的higg 。
  13. Aim : to analyze the mechanism, thermadynamic theoretical basis, dynamic mechanism and influencing factors of thermally induced phase separation ( tips ) in order to completely grasp the factors affecting the size, distribution and form of pores, so that the adjusted range of pore can be widened and the preparation of porous membrane can be repeated and controlled. methods : considering from the structural characteristics of tissue engineered materials, the methods of preparing porous membrane using tips technique, the hermadynamic theoretical basis, dynamic mechanism and influencing factors were analyzed, the problems and investigative directions in the future were also analyzed. tips technique is a process of phase separation of polymer homogenous solution under quenching, and it is suitable for diameter and structural form of the micropore materials prepared using tips are closely correlated with the kind and dispensing proportion of polymer attrnuant, polymer concentration and polymer molecular mass, etc. conducted, including determination of polymer - solvent system phase diagram, study of form and appearance of porous membrane of different thickness, study of form and appearance of porous membrane prepared with systems of different x, which is the parameter of polymer - solvent interaction

    目的:分析熱致相分離成膜過程的機理、熱力學理論基礎、動力學機制以及影響因素，以便充分掌握影響孔度大小、分佈、形態的因素，使孔度調控范圍得以拓寬，使多孔膜的制備能重復可控.方法:從組織工程材料結構特點出發，分析熱致相分離聚合物多孔膜的制備方法及該法成膜的熱力學理論基礎、動力學機制以及影響因素.並分析實驗中存在的問題及今後的研究方向.結果:以熱致相分離法可制備聚合物多孔膜.熱致相分離法制備多孔膜是高聚物均相溶液在淬冷條件下發生相分離的過程，它適用於上臨界共溶溫度型聚合物一稀釋劑二元體系.熱致相分離法成膜的過程，可以認為是旋節線機理佔主導地位.熱致相分離法制備的微孔材料，其孔隙率、孔徑大小、結構形態與聚合物稀釋劑的種類、組成配比、聚合物濃度、聚合物分子量等因素密切相關.結論:可採用熱致相分離技術制備多孔膜，通過改變不同的成膜條件可獲得一系列不同孔徑尺寸和孔徑分佈的多孔膜材料.對熱致相分離成膜過程中聚合物-溶劑體系的相圖測定，不同厚度的多孔膜形貌研究，不同x （聚合物-溶劑相互作用參數）體系所制備的多孔膜形貌等需深人研究
  14. The greater the concentration of organic substance or the molecular weight was, and the higher the degree of negative impacts was

    有機物的濃度越高，有機物的分子量越大，對生物氧化除鐵的阻礙作用越大。
  15. Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature. polymers with high yield and high molecular weight were obtained. their structures were characterized by uv, ir, nmr and gpc, respectively. the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region. the relation between fluorescence and polymer structure was studied. the results showed that the molecular chain structure has great influence on fluorescence of the polymers. the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength. the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength, and different emission sites in molecular chains and low emitting yield are shown. the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers

    文摘:使用有機金屬銠、金屬鎢/四苯基錫催化劑體系聚合苯乙炔，分別獲得了高產率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分別對聚合物結構進行了表徵.採用不同波長的激發光對聚合物熒光性能進行研究，詳細分析了聚合物結構與熒光性能之間的關系.研究結果發現，不同聚合物結構對聚合物熒光性能產生很大影響，規整性高的聚合物，將有較高的發光量子效率；聚合物規整性差，將可能導致多個熒光發光結構點，其熒光強度降低.聚合物熒光光譜研究將對某些共軛聚合物結構的規整性分析提供一些有用的信息
  16. The study indicates that, the slippage effect is a combined result of gas molecule slip on capillary wall and gas molecular diffusion inside capillary tube, and also a result of combination of concentration and pressure fields

    研究認為，氣體滑脫效應是毛細管壁處氣體分子滑流和毛細管內部氣體分子擴散的綜合效應，是濃度場和壓力場作用疊加的結果。
  17. The spinning conditions include spinning methods, the pressure and types of filling liquid, the pes concentration, the molecular weight of pvp and peg and the coagulation length in the first coagulation bam

    紡制條件包括:紡絲方法、填充液的壓力和種類、聚醚礬質量分數、聚乙烯毗咯烷酮的相對分子質量、聚乙二醇的相對分子質量以及在第一凝固浴中的凝固長度等。
  18. For poly ( vinyl acetate ) based lpas, it seemed that lpas with higher molecular weights worked better than that with the lower molecular weights and lpa with low molecular weights need high concentration for good shrinkage control

    對于聚苯乙烯類的lpa - c ，試樣收縮控制效果隨著lpa - c濃度的增加而增強；對于聚醋酸乙烯酯類的lpa ，分子量較高的lpa比分子量較低的lpa的收縮控制效果好；分子量較低的lpa若要達到較好的收縮控制效果則需要較高的濃度。
  19. Concentration of low molecular weight and high molecular weight polycyclic aromatic hydrocarbons pahs in marine sediments in hong kong, 2002 - 2005

    2002 - 2005年海床底泥的低高分子量多環芳烴含量
  20. The nano - sized caco3 particles were well dispersed in the pvc matrix, the sharp angles that formed when the pvc molecular chains stressed have an tendency to be changed to the obtuse angles. therefore, the stress concentration could be $

    納米caco _ 3粒子在pvc基體中的良好分散，可以使pvc分子鏈在受力過程中形成的銳角鈍化，從而避免應力集中、彌補缺陷，起到增韌增強pvc的作用。
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