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anzhitingnan捐助貴賓 (小有名氣)
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對項(xiàng)目相當(dāng)重要和關(guān)鍵的一段，謝謝各位大神�。�！ Therefore, an indirect determination method based on selective solute permeation data has to be used. Recently Kastelan-Kunst et al. proposed a method that enabled the determination of pore size and PSD in the membrane upper layer (skin). The concept and the procedure are based on the surface force-pore flow (SF-PF) model of material transport through a membrane, and experimentally obtained solute rejections for a number of markers. The SF-PF model takes into account interaction forces between the membrane surface and the solute, expressed by an electrostatic or a Lennard–Jones-type potential function, and the solute and solvent transport through the membrane under the influence of such forces. In the course of calculation, pertinent quantities such as permeation volume permeation rate, solute concentration at the pore outlet and solute rejection for a single pore were defined. By adding up these quantities for a collection of pores the permeation rate and the solute rejection factor values of various markers were computed as functions of pore size distribution through the collection of active pores of the membrane’s upper layer. The results were finally compared with experimental data to give the best fit pore size distribution in the membrane’s skin. In addition to pore dimensions and PSD the effective number of pores in the membrane’s skin could have been calculated using this method. |
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Therefore, an indirect determination method based on selective solute permeation data has to be used. 因此，必須運(yùn)用一種基于選擇性溶質(zhì)滲透數(shù)據(jù)的，間接測定方法。 Recently Kastelan-Kunst et al. proposed a method that enabled the determination of pore size and PSD in the membrane upper layer (skin). 最近Kastelan-Kunst等研究者，提出了一種方法，能確定膜上層（皮膚）中的孔隙大小和PSD(不知道選取什么意思) The concept and the procedure are based on the surface force-pore flow (SF-PF) model of material transport through a membrane, and experimentally obtained solute rejections for a number of markers. 這種概念和程序基于，材料的表面力-孔隙流模型，運(yùn)輸通過膜。并在通過實(shí)驗(yàn)獲得溶質(zhì)廢料，從而獲得大量的標(biāo)記。 The SF-PF model takes into account interaction forces between the membrane surface and the solute, expressed by an electrostatic or a Lennard–Jones-type potential function, and the solute and solvent transport through the membrane under the influence of such forces. 表面力-孔隙流模型，重視膜表面與溶質(zhì)間的相互作用力，并通過靜電或者Lennard-Jones-類位函數(shù)表達(dá)出來。同時，在這種作用力的影響下，溶質(zhì)和溶劑通過運(yùn)輸穿透過膜。 In the course of calculation, pertinent quantities such as permeation volume permeation rate, solute concentration at the pore outlet and solute rejection for a single pore were defined. 在計(jì)算過程中，定義了相關(guān)的參數(shù)，例如滲透量，滲透率，孔排放處溶質(zhì)濃度，以及單孔溶質(zhì)廢料。 By adding up these quantities for a collection of pores， the permeation rate and the solute rejection factor values of various markers were computed as functions of pore size distribution through the collection of active pores of the membrane’s upper layer. 通過合計(jì)這些參數(shù)，聚集了許多孔。通過收集膜上層的活性孔，各種標(biāo)記的滲透率和溶質(zhì)廢料要素價值也被計(jì)算出來，作為孔徑尺寸分布函數(shù)。 The results were finally compared with experimental data to give the best fit pore size distribution in the membrane’s skin. 最終將結(jié)果與實(shí)驗(yàn)數(shù)據(jù)對比，從而給出膜皮膚上最匹配的孔徑分布值。 In addition to pore dimensions and PSD，the effective number of pores in the membrane’s skin could have been calculated using this method. 除了空尺寸和PSD,膜皮膚上的有效孔數(shù)量也可以運(yùn)用這中方法計(jì)算出來。 |
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