DSpace collection: 專書

Membrane-Based Hybrid Processes for Wastewater Treatment

Wed, 06 Jul 2022 04:11:17 GMT

title: Membrane-Based Hybrid Processes for Wastewater Treatment abstract: Since the development of a stable ion-exchange membrane with low electric resistance in 1950, ion-exchange membranes have advanced from laboratory scale operations to industrial productions with extensive applications. Although ion separation is the most common function of ion-exchange membranes, most membranes exhibit non-selective removal of specific ions. In membrane technologies, permselectivity is defined as the preferential transport of specific ionic species through membranes that bear fixed charges in the polymer matrix based on Donnan effect and Donnan exclusion. Permselectivity of membranes can be discussed in two categories: the selectivity between co-ions and counterions and that between different counterions. An ideal permselectivity membrane should exhibit a high retention capacity for co-ions, a high transport number and selectivity for counterions, and in some cases, selectivity between monovalent and divalent counterions or among ions with same charge, e.g., NO3− and Cl−. In general, the ion separation ability depends on the ionic size, affinity of the counterions toward the membrane, and the difference in ion mobility within the membrane. Therefore, significant research has focused on the modification of pore size, surface functional groups, and microstructures of the membrane via various synthesis procedures in order to precisely tune membrane permselectivity. Previous efforts on selective membranes for anion and cation removal from wastewater, respectively, were reviewed. System integration involving permselective membranes and electrochemical processes for wastewater treatment is presented. Finally, examples of industrial applications of permselective membranes for the treatment of wastewaters were discussed. Overall, this chapter provides comprehensive information on the advances and applications of permselective membranes for the remediation of specific impaired waters.

半導體製程概論

Wed, 05 Jan 2022 04:12:24 GMT

title: 半導體製程概論

固態物理與化學

Thu, 24 Dec 2020 04:11:30 GMT

title: 固態物理與化學

仿生膜的結構與機械特性研究

Thu, 29 Oct 2020 04:11:28 GMT

title: 仿生膜的結構與機械特性研究 abstract: Self-assembled polymer membranes have attracted a growing attention due to their multifunctionality and stability. Compared to lipid membranes, polymer membranes have enhanced mechanical and transport properties with high molecular weight. Numerous experimental techniques have been developed to explore membrane characteristics; however, experimental microscopic observations and knowledge of vesicles are limited. Mesoscale simulations can complement experimental studies of the membrane features at the microscopic level and thus provide a feasible method to better understand the relationship between the fundamental structures and physicochemical properties of a membrane. Moreover, the predictive ability of the simulation approaches may greatly assist developments and future applications of biomimetic membranes. This dissertation uses dissipative particle dynamics (DPD) to explore the self- assembly of three polymeric systems. We have paid particular attention to the fundamental properties of polymer membranes and their biological behaviors. There are three parts in this dissertation. In the first part (Chapter 3), the formation and physical properties of solid-supported polymer bilayer (SPB) on an adhesive substrate have been explored. SPB is developed by the adsorption of vesicles formed by diblock copolymers in a selective solvent. The adsorbed vesicle can remain intact or become ruptured into SPB, depending on the interaction between solvophobic block and solvent and the interaction between solvophilic block and substrate. The morphological phase diagram of adsorbed vesicles is acquired. The influences of polymer adhesion strength and solvophobicity on the geometrical and mechanical properties of SPB are systematically studied as well. It is found that vesicular disruption is easily triggered for strong adhesion strength Moreover, for strong adhesion strength and weak solvophobicity, the fluctuation of membrane height is impeded while the area fluctuation is enhanced. In the second part (Chapter 4), Instead of forming typical bilayer or monolayer membrane, both the bridge (I-shape) and loop (U-shape) conformations are coexistent in the planar membranes formed by ABA triblock copolymers in a selective solvent. The non-equilibrium and equilibrium relaxation dynamics of polymer conformations are monitored. The non-equilibrium relaxation time depends on the initial composition and grows (increases) with (an increase in) the immiscibility between A and B blocks. The equilibrium composition of the loop-shape polymer is independent of the initial composition and A-B immisibility. However, the extent of equilibrium composition fluctuations subsides as A and B blocks become highly incompatible. The influences of the A-B immiscibility on the geometrical, mechanical, and transport properties of the membrane are also investigated. As immiscibility increases, the overall membrane thickness and the B block layer thickness (h) rise (increase) because of the increment of (in) the molecular packing (density). As a result, both the stretching (K_A) and bending (K_B) moduli grow significantly with increasing A-B immiscibility. Consistent with typical membranes, the ratio K_B/K_A h^2=2×〖10〗^(-3) is a constant. Although the lateral diffusivity of polymers is insensitive to the immiscibility, the membrane permeability decreases substantially as A-B immiscibility is increased. In the third part (Chapter 5), The influences of the branching patterns on the membrane properties of Janus dendrimers in water have been investigated. The hydrophobic fluorinated dendron (RF) contains three types of branching patterns, including 3,4-, 3,5-, and 3,4,5-RF. Consistent with experimental results, the hydrophobic layer thickness (H_B) follows the order: 3,5-RF < 3,4-RF < 3,4,5-RF, which can be explained by the extent of interdigitation (∆h) : 3,5-RF > 3,4-RF > 3,4,5-RF. Moreover, the 3,4,5-RF membrane shows the highest stretching modulus (KA) and the lowest lateral diffusivity (D). The 3,5-RF membrane is similar to the 3,4-RF membrane but exhibits higher KA and smaller D. For the nano-sized dendrimersome, its bilayer thickness is less than that of the planar membrane due to its larger extent of interdigitation. The coassembly of dendrimersomes with lipids has been studied as well. The thickness and the extent of interdigitation of the lipid-rich domain for the hybrid membrane is significantly affected by the lipid concentrations (∅_l) and the branching patterns. As ∅_l increases, the thickness of the lipid-rich domain grows corresponding to the decrease of interdigitation of the lipid-rich domain.

添加銅鎳至銲料中探討抑制微孔洞以及Cu3Sn的機制

Thu, 16 Apr 2020 04:10:45 GMT

title: 添加銅鎳至銲料中探討抑制微孔洞以及Cu3Sn的機制 abstract: 銲料在微電子工業上的挑戰，如封裝相容性，潛變，微孔洞等等，而其中在經過高溫熱處理的試片，沿著Cu3Sn與Cu的界面，我們可以觀察到一層連續micro voids在Cu3Sn中生成，Micro voids將提高銲點發生脆化的潛在風險，影響銲點強度，降低產品使用壽命，我們若能對於銲料與金屬墊層間的反應情況有更深的瞭解與控制勢必可增加銲點強度。銲料與Cu墊層反應後，在Cu3Sn中有micro voids生成已經被許多文獻報導，由於Cu3Sn生長與micro voids息息相關，愈薄的Cu3Sn生長對銲點強度的提升也許會有幫助。目前銲料的發展為微量元素的添加去抑制Cu3Sn的生長，然而微量元素如何去抑制Cu3Sn的生長機制還尚未瞭解。本實驗主要目的為探討銲料中Cu濃度對micro voids生成以及添加Ni至銲料中探討Cu3Sn生長機制，實驗分為兩大部分，第一部分我們討論銲料中Cu濃度與micro voids的關係，第二部份討論添加Ni與Cu3Sn生長機制的關係，實驗參數與結果如下：第一部分：所使用的銲料組成分別為Sn-xCu(x=0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 wt.%)，與Cu板進行頂溫235oC、90 sec迴銲，再將銲接後的試片經過160oC，500、1000、2000 h熱處理，研究重點在於探討銲料中Cu濃度對micro voids生長的影響。由實驗結果得知在經過高溫熱處理後，Cu6Sn5與Cu3Sn同存在於界面處，當反應時間500 h尚未有micro voids生成，直到反應時間達1000 h，當銲料中Cu濃度≦0.46 wt.%時，在Cu3Sn中有micro voids生成，當反應時間達2000 h銲料中Cu濃度≦0.50 wt.%時，在Cu3Sn中有micro voids生成。由實驗結果可知，在熱處理溫度160 oC反應時間達2000 h，可藉由維持在銲料中的高Cu濃度(e.g.≧0.58 wt.%)來有效抑制micro voids生成。第二部分： Micro voids只生長在Cu3Sn中，目前抑制Cu3Sn生長的有效方法為微量Fe、Co、Ni添加，然而其抑制機制尚未明確，為了研究Ni對Cu3Sn生長的影響，此部分實驗所使用的銲料為10Sn90Pb與5Sn95Pb添加0、0.03、0.06、0.1和0.2 wt.% Ni，反應條件為在350 oC下進行2 min迴銲，以及160 oC下500，1000，2000 h熱處理。在迴銲後，Cu3Sn是唯一生成的介金屬，而在固態熱處理後，10Sn90Pb-xNi界面上除了生成Cu3Sn外，也有Cu6Sn5生成，而5Sn95Pb-xNi界面上只有Cu3Sn生成，介金屬生長順序可藉由Cu-Sn-Pb三元相圖得知。實驗結果顯示微量Ni添加到高鉛銲料中無法抑制Cu3Sn的生長，然而由過去文獻可知Ni添加到無鉛銲料中可以抑制Cu3Sn，這是由於在無鉛銲料中添加Ni，當試片迴銲後會生成很厚且鬆散的(Cu,Ni)6Sn5，形貌似樹枝狀結構，讓Cu原子優先與Cu6Sn5縫隙中的Sn反應生成Cu6Sn5，因此抑制Cu3Sn生長，因此Ni抑制Cu3Sn必須透過Cu6Sn5。

Design and Synthesis of Architectured Materials for the Removal of Selected Chemical Contaminants in Water

Mon, 16 Dec 2019 04:10:43 GMT

title: Design and Synthesis of Architectured Materials for the Removal of Selected Chemical Contaminants in Water

Polymer Chemistry

Tue, 04 Dec 2018 04:11:38 GMT

title: Polymer Chemistry

節能照明技術講義

Thu, 04 Jan 2018 18:10:50 GMT

title: 節能照明技術講義

程序設計與 Aspen Plus

Fri, 09 Dec 2016 18:11:04 GMT

title: 程序設計與 Aspen Plus

單元操作實驗

Wed, 30 Nov 2016 18:10:28 GMT

title: 單元操作實驗

公用設施

Wed, 30 Nov 2016 18:10:26 GMT

title: 公用設施

化學工業安全概論

Tue, 11 Oct 2016 18:12:00 GMT

title: 化學工業安全概論

運用SVR與Bass模型於台灣主機板與筆記型電腦預測分析

Tue, 11 Oct 2016 18:11:58 GMT

title: 運用SVR與Bass模型於台灣主機板與筆記型電腦預測分析 abstract: 台灣是世界排名第一的主機板與筆記型電腦生產國家, 其在2011的佔有率分別為80.4% 與93.6%.而其未來之預測發展對高階主管而言是非常重要. 本研究目的即是提供有效預測模式給主機板,筆記型電腦製造商與相關產業作為未來擴產與投資之重要參考. 在本研究中, 我們運用支持向量回歸與貝氏擴散模式, 分析1998年至2012年台灣主機板與筆記型電腦季出貨之資料, 運用格子點參數搜尋,非線性最小平分法, 基因演算法與粒子群最佳化,分別找出支持向量回歸與貝氏擴散模式之最佳參數. 而運用平均絕對值百分比誤差(Mean Absolute Percentage Error, 簡稱MAPE)進行預測效益評估.本研究結果分析,支持向量回歸之平均絕對值百分比誤差低於貝氏擴散模式,可運用在主機板與筆記型電腦市場預測分析。 Taiwan is the world’s leading motherboard (MB) and notebook (NB) manufacturer, boasting a 2011 global market share of 80.4% and 93.6%, respectively. It is highly crucial for executives to predict future trends from within an environment of uncertainty. The aim of this study is to provide an efficient forecasting model to serve as a key reference for MB and NB manufacturers looking to expand or invest. We propose the following 2 forecasting models based on MB and NB quarterly shipment data from 1998-2012: (a) support vector regression (SVR) using a grid search method for the estimation of three parameters; and (b) Bass diffusion models (BDMs) using non-linear least square (NLS), genetic algorithm (GA), and particle swarm optimization (PSO) methods for parameter optimization. We also evaluate the forecasting accuracy by actual mean absolute percentage error (MAPE).The obtained MAPE values indicate that the proposed SVR model outperforms the BDMs using NLS, GA, and PSO for fitting and forecasting based on MAPE, and is therefore recommended for MB and NB market forecasting analysis.

Introduction to Nanomaterials

Tue, 15 Dec 2015 08:02:26 GMT

title: Introduction to Nanomaterials description: 103教學優良教材申請案第6號

科技未來

Mon, 05 Nov 2012 07:13:42 GMT

title: 科技未來 description: 100學年度教學優良教材

計算機工程應用

Tue, 21 Aug 2012 07:42:35 GMT

title: 計算機工程應用

工業儀錶

Tue, 21 Aug 2012 07:42:28 GMT

title: 工業儀錶

輸送現象與單元操作(三)：質量輸送與操作

Tue, 07 Sep 2010 09:14:48 GMT

title: 輸送現象與單元操作(三)：質量輸送與操作 abstract: 由於這一學門所涵蓋之領域如此之廣，故本書共分三冊，分別討論動量輸送、熱量輸送、質量輸送及各輸送之單元操作；而為了三冊內容分配平均，故將粉粒體之單元操作併入第二冊中。本冊先複習質量、能量及動量之結算；然後討論動量輸送之基本原理，包括流體之性質、層狀流動與擾狀流動，以及流體流量之測定；最後逐項介紹動量輸送之單元操作，包括流體輸送裝置及計算、流體之攪拌與混合、過濾、離心分離以及機械分離。

輸送現象與單元操作(二)：熱輸送與操作以及粉粒體操作

Tue, 07 Sep 2010 09:14:43 GMT

title: 輸送現象與單元操作(二)：熱輸送與操作以及粉粒體操作

輸送現象與單元操作(一)：流體輸送與操作

Tue, 07 Sep 2010 09:14:38 GMT

title: 輸送現象與單元操作(一)：流體輸送與操作

從液相中分離微米級粒子的技術

Tue, 09 Mar 2010 02:26:33 GMT

title: 從液相中分離微米級粒子的技術

泥漿之流變特性

Tue, 09 Mar 2010 02:26:30 GMT

title: 泥漿之流變特性

計算機工程應用

Tue, 09 Mar 2010 02:26:26 GMT

title: 計算機工程應用

Tests of a free-volume model of inert gas narcosis by volumetric measurements

Tue, 09 Mar 2010 02:26:23 GMT

title: Tests of a free-volume model of inert gas narcosis by volumetric measurements

工業儀器

Tue, 09 Mar 2010 02:26:19 GMT

title: 工業儀器

化工計算

Tue, 09 Mar 2010 02:26:15 GMT

title: 化工計算

熱傳遞

Tue, 09 Mar 2010 02:26:12 GMT

title: 熱傳遞

物理化學

Tue, 09 Mar 2010 02:26:08 GMT

title: 物理化學

噪音振動控制

Tue, 09 Mar 2010 02:25:39 GMT

title: 噪音振動控制

表面處理

Tue, 09 Mar 2010 02:25:33 GMT

title: 表面處理