concentration by volume 中文意思是什麼

concentration by volume 解釋
容積濃度
  • 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。
  • by : adv 1 在側，在旁，在附近。2 （擱）在一邊，（放）到旁邊，（存）在一旁；收著。3 （由旁邊）經過，過...
  • volume : n. 1. 卷，冊；書籍；【歷史】書卷，卷軸。2. 〈常 pl. 〉大塊，大量，許多。3. 體積；容積；分量，額；【物、樂】音量；強度，響度。
  1. 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
  2. The pigment obtained was further characterised with regard to the parameters required for paint formulation ; its specific mass was determined by oil consumption and critical pigment volume concentration

    此外，針對油漆配方所要求的參數，對制得的顏料進一步檢定；其密度由耗油量和臨界顏料體積濃度決定。
  3. And the adsorbability of this novel adso rbent for ldl was determined. in order to prepare the solid supports in accordance with with the request of adsorbent for ldl, paam beads were synthesized by inverse suspension polymerization. the composition of the polymerization system is shown as follows : the concentration of monomer and dispersant are 12 % and 0. 65 % respectively, the volume ratio of oil / water isl : 3, the mole ratio of aam and mba is 18 : 1

    本文用反相懸浮聚合法合成符合ldl吸附劑載體要求的聚丙烯酰胺微珠，經實驗篩選出反應體系所需的最佳單體濃度（ 12 ） 、最佳分散劑用量（ 0 . 65 ） 、最佳油水比值（ 1 ： 3 ） 、最佳單體（ aam ）與交聯劑（ mba ）的物質的量之比（ 18 ： 1 ） 。
  4. Abstract : the dynamic interfacial tension at crude oil / water interface was studied by drop volume method at different temperatures and concentration of demulsifier

    文摘:採用液體體積法測定了原油/水體系在不同溫度和不同破乳劑濃度下的非平衡態界面張力，並對水相不同離子價態對界面張力的影響進行了研究。
  5. According to the observed experiments that the na2feo4 solution with the same concentration and volume were decomposed by the same area of different membrane, we learned the order of the decomposing rate of na2feo4 caused by different membranes : soapnated cellulose acetate > vinylon > polypropylene polyvinyl chloride = polyethylene microfiber glass mat

    從觀察等面積的隔膜引起同濃度同體積的na _ 2feo _ 4溶液的分解實驗可知，不同隔膜材料引起na _ 2feo _ 4溶液分解速率從大到小的順序是，皂化再生纖維素膜維尼綸無紡布改性聚丙烯膜聚氯乙烯膜輻射接枝聚乙烯膜復合玻璃纖維氈。
  6. The process of effluent flow during loading in self - propelled trailing suction hopper dredgers was simulated by way of physical modeling and was measured and analyzed by using the flow rate and concentration of spoil in the hoppers, particle sizes of sediments at the inlet and outlet of the effluent flow pipe and hopper volume as the major control parameters

    摘要通過物理模型試驗模擬自航耙吸挖泥船裝艙溢流施工過程，以艙內流速、艙內濃度、溢流進出口泥沙粒徑、裝艙量幾方面為主要控制因素，進行實測、分析，並比較自航耙4種常用裝艙裝置的消能效果。
  7. The nanoparticle titanium dioxide was prepared with tnb as raw material by the sol - gel process, the effects of the alcohol salt concentration the kind of solvent the water volume hydro1yze temperature. the dried ways of the wet gel and the calcined temperature of the dry gel on the specific surface area. particle size

    本文以鈦酸丁酯為前驅體，利用溶膠?凝膠法制備了納米級的tio _ 2粉體材料，通過正交實驗研究了醇鹽的濃度、溶劑的種類、水含量、水解溫度、乾燥條件和煅燒溫度等工藝條件對納米粒子的比表面積、粒徑大小及分佈、晶相組成等性能的影響。
  8. It was determined that the particle size of haloperidol - loaded plga / pla nanoparticles is effectively controlled by the amount of shear stress transferred from the energy source to the organic phase, which is strongly correlated to the following parameters : type of applied energy, aqueous phase volume, and polymer concentration in the organic solvent

    已經確定可通過對有機相的剪切力大小來有效控制氟哌啶醇plga / pla納米粒的粒徑，而這種剪切力大小與下列參數密切相關：所用能量類型，水相體積和有機溶劑中的聚合物濃度。
  9. Abstract : a continuity wave model is put forward for the dispersion processof liquid - liquid two - phase system, by coupling mass and momentum conservation equations of two - fluid model. the conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model. the phenomena of catastrophic inversion and transitional inversion are explained. the effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model. according to the theory herein, emulsion inversion is the regime transition of liquid - liquid system due to the instablity of a dispersion process. the effect of drop size distribution on the maximum volume concentration of a liquid - liquid emulsion only occurs in a certain range of weber numbers

    文摘:以雙流體模型為基礎，通過質量守恆方程和動量守恆方程的耦合，提出了液-液兩相系中彌散傳質的連續波模型.由該模型得到彌散傳質過程阻塞和彌散傳質過程弱不穩定性產生的條件，計算了液滴尺寸及其分佈對乳化液極大堆砌分數的影響，解釋了劇變型乳化逆變和漸變型乳化逆變現象.研究結果表明，乳化逆變是由於彌散傳質過程的不穩定性而引起的懸浮體型態的改變，隨液滴尺寸多分散性的增大，極大堆砌分數增大；隨液滴平均尺寸的增大，多分散性對極大堆砌分數的影響減弱；當韋伯數足夠大時，液滴尺寸及其分佈對乳化液極大堆砌分數無影響
  10. Its " optimum concentration of trypan blue was from 0. 005 % to 0. 01 % ( w / v ), the optimum volume was around 15ml / per petri dish ( 080mm ). lbsp medium was easy to use and can be sterilized by 121 擄 c for 30 minutes

    比較研究結果表明鑒定培養基的適宜條件是：錐蟲藍的使用濃度是0 . 005 - 0 . 01 （ w v ） ，培養基的用量為15ml皿左右，並可以採用0 . 1mpa高壓蒸汽滅菌。
  11. Finite volume element method is used for the first equation, and the second concentration equation is treated by a combination of the finite volume element method and the method of characteristics

    對壓力方程採用有限體積元法，對飽和度方程採用特徵有限體積元法進行數值分析。
  12. Secondly, for the first time, by volume average concept and reynolds time - average method, a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation, concentration fluctuation and volume fraction of gas and liquid on mass transfer. a source item sc for interphase mass transfer is considered. by applying conventional method of estimating the interphase mass transfer coefficient, a formula for sc is obtained

    其次，採用體平均概念、雷諾時均化方法結合塔板氣液相互作用的實際情況首次推導了考慮速度、濃度脈動項和氣、液相含率影響的塔板三維擬單相流湍流傳質模型，源相中考慮了氣液相間傳質項sc ，並運用化工中關于相間傳質系數計算的理論，推導了sc的表達式。
  13. The character of flood channel can be determined by dominate current, dominate tidal volume, dominate sediment concentration, channel geometry configuration and direction of bed sediment transport and so on

    用優勢流、優勢沙、優勢潮量、漲潮槽形態和凈底沙運移方向的方法都可以表達漲潮槽的性質。
  14. Deproteinized from crude polysaccharide by adopting sevag method. through orthogonal test, we found that the best constitution for extracting polysaccharide from porphyridium aerugineum 755 were as follow : alcohol concentration was 50 %, alcohol volume was 3 - fold time, percolation time was 1. 5h, the volume ratio of glycoprotein solution to sevag reagent was 1 : 2, time was 15min and sevag reagent was 4 : 1 between chloroform and butanol. the result also indicate that lactose and ( nh4 ) 2so4 were the best carbonic and nitrogen sources for polysaccharide respectively

    研究結果表明，三種紫球藻的最佳提取工藝各不相同，銅綠紫球藻的最優提取工藝為乙醇濃度50 ，乙醇用量為3倍體積，醇沉時間為1 . 5小時；氯仿與正丁醇的比例4 ： 1 ，樣液與sevag試劑的比例1 ： 2 ，作用時間為15min ；由方差分析可得五種碳源和五種氮源對胞外多糖的影響不顯著，其中添加乳糖和（ nh _ 4 ） _ 2so _ 4的培養基多糖產率最高，分別為37 . 296mg l和12 . 961mg l 。
  15. According as the mathematic model near the inlet of the 1750m3 / h cutter suction dredger, by researching the method of calculating the slop ' s specific gravity and volume concentration, the thesis adopted instant interactive mode and developed the optimized dredging operation guiding and training system, which has outstanding instructional quality

    根據1750m ~ 3 h絞吸式挖泥船吸口處泥漿形成過程的數學模型，通過對計算泥漿比重及體積濃度的方法進行專門研究，採用即時交互方式，按疏浚作業優化操作步驟開發出指導性強的疏浚作業優化操作提示系統。
  16. The volume expansion played a major role in determining its magnetic properties. complicated magnetic phase transitions induced by external magnetic field were found in carbonization of lafe _ ( 11. 4 ) al _ ( 1. 6 ) compound with low carbon concentration. and the temperature of phase transition depends on magnetic field strongly

    同時發現，碳含量較低時， lafe _ （ 11 . 4 ） al _ （ 1 . 6 ）碳化物在磁場誘導下呈現出有趣的復雜磁相變，相變溫度強烈依賴于外加磁場。
  17. The influences played by temperature rise, the degree of moisture concentration, fiber volume fraction, shell geometric parameter, total number of plies, stacking sequences and initial geometric imperfections are studied

    討論了溫度和濕度，纖維體積比率，殼體幾何參數，鋪層數，鋪層方式和初始幾何缺陷等各種參數變化的影響。
  18. A better desired ventilation form is acquired by comparing the three efficiency values. on the basis of recently materials collected in the field at home and abroad, this paper adopts two - equation turbulence model by analysis and comparison, and sets up mathematical model to study three - dimentional indoor turbulent flow. control - volume method and power - law scheme is used to discrete these differential equations. according to semi - implicit method for pressure - linked equations ( simple algorithm ), author writes a general program in c language for simulation of the velocity profile, temperature and pollution concentration distributions of indoor airflow, and the writing, the debugging and the running of the program. all are completed in microsoft visual c + + 6. 0 environment

    在收集國內外在這一領域內的大量資料的基礎上，通過分析與比較，採用了k -雙方程模型來研究室內氣流的濃度分佈，建立了描寫穩態的三維紊流室內氣流濃度分佈的數學模型，採用控制容積法和冪函數分佈方案來離散微分方程組，按壓力藕合方程的半隱式法（ simple ）演算法，用c語言編寫了計算室內氣流流場和溫度場、濃度場的通用程序，並在microsoftvisualc + + 6 . 0環境下對程序進行編制、調試與運行，並對調試工作做了探討與分析。
  19. Because drug molecules are rapidly removed by the systemic circulation and distributed into a large volume of body fluids and tissues, drug concentration in blood is initially low compared with that at the administration site, producing a large gradient

    由於藥物分子是經體循環快速轉運並分佈到大容積體液和組織中去的，所以開始時，血液中的藥物濃度低於給藥部位的藥物濃度，形成大的濃度梯度。
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