a c structure of nucleus
Development of novel chitosan based hollow fiber membranes for applications in water treatment and bioengineering
Ngày tải lên :
14/09/2015, 08:49
... Organic or inorganic: polymers, metals, ceramics, graphite and glass Organic: crystalline polymeric material Track-etching Organic: polycarbonate Template leaching Organic and inorganic materials: ... in the accumulation of products or lack of substrates at the catalytic reaction interface and hence lower the reaction rate because the substrates and products are not soluble in same phase In ... Mass transfer and selectivity of membranes 2.3 Classification of membranes 2.4 Adsorptive membrane 2.5 Chitin and chitosan 2.6 Characteristics and properties of chitosan 2.7 The applications of...
- 230
- 404
- 0
Development of chitosan based blend hollow fiber membranes for adsorptive separation in environmental engineering and bioengineering applications
Ngày tải lên :
14/09/2015, 11:42
... structural characteristics of the CS/CA blend hollow fiber membranes .104 Table 4.4 Effect of internal coagulant composition and CS concentration on the structural characteristics of the CS/CA ... Figure 2.3 Schematic chemical structures of (1) chitin, (2) chitosan and (3) cellulose 34 Figure 3.1 Schematic chemical structure of cellulose acetate 54 Figure 3.2 Schematic diagram of the experimental ... sterilization and clarification of all kinds of beverages and pharmaceuticals in the food and pharmaceutical industries A MF membrane is generally symmetric and microporous to pass water and solutes...
- 227
- 962
- 0
Fabrication of nanofiltration hollow fiber membranes for sustainable pharmaceutical manufacture
Ngày tải lên :
12/09/2015, 11:29
... sustainable pharmaceutical manufacture, fabrication of nanofiltration membranes, and theoretical background for NF membrane characterizations Chapter Two presents the molecular engineering of ... respectively [64] Therefore, the effective charge density of a membrane can be determined as a function of NaCl concentration if and are 12 available At a higher NaCl concentration, the membrane ... Removal of natural organic matters (NOM) from water Water Removal of heavy metals from water Desalination in forward osmosis (FO) process Removal of pharmaceutical active compounds Recovery and concentration...
- 158
- 505
- 0
Dual layer asymmetric hollow fiber membranes for gas separation
Ngày tải lên :
16/09/2015, 17:11
... gas separation in literatures (by Chemical Abstract [SciFinder Scholar] in 28 June 2004) research of gas separation membranes to successful commercial applications The commercialization of gas ... Langmuir affinity constant (atm-1) Bn Constant for gas component n c' H Langmuir sorption capacity (cm3 (STP) / cm3 (polymer)) cP Heat capacity Cn Molar concentration of solute n d Coating thickness ... more favorable in vapor / gas separation than glassy materials The applications include recovery of gasoline vapor, chlorofluorocarbon, hydrocarbons, and solvent vapor etc The potential applications...
- 267
- 530
- 0
Extractant impregnated hollow fiber membranes for phenol recovery from wastewater
Ngày tải lên :
30/09/2015, 10:12
... streams discharged from industries are rich in pollutants including organic compounds and metals Many of these pollutants are toxic, recalcitrant and bioaccumulating If discharged into natural water ... extraction system has several disadvantages Dispersion of phases often leads to formation of stable emulsions which are difficult to separate at later stages, leading to secondary contamination ... commercial adsorbents that provide large surface areas for substrate binding While activated carbon and cyclodextrins are the most popular commercial ones, there are many cheap and non-conventional sorbents...
- 101
- 476
- 0
The development of pervaporation hollow fiber membranes for isopropanol dehydration
Ngày tải lên :
16/10/2015, 15:38
... [23,24]: fumaric acid, glutaraldehyde (GA), HCl, citric acid, maleic acid, formic acid, amic acid, sulfursuccinic acid, and formaldehyde Blending is another economical and effective approach to suppress ... not acquired industrial acceptance because of the lack of advanced performance and the instability in organic solvents of currently available membranes [21] The first and only pervaporation plant ... mixtures can be categorized into four major groups: polar/non-polar, aromatic/aliphatic, aromatic/alicyclic and isomers Smitha et al [21] have given a good literature summary on membrane materials and...
- 164
- 692
- 0
Symbiotic hollow fiber membrane photobioreactor for microalgal growth and activated sludge waste water treatment
Ngày tải lên :
09/09/2015, 11:31
... the application of microalgal biomass in production of a variety of consumer products, as well as microalgae for environmental applications 12 2.1.1 Cultivation of microalgae Microalgae can be cultivated ... braunii and Scenedesmus quadricauda were capable of removing phenols from the wastewater (Pinto et al 2003) Cell walls of microalgae are composed of polysaccharides and carbohydrates that have ... biofilm of microalgal-bacterial biomass was formed based on sole attachment of the biomass to photobioreactor walls, thus the microalgal-bacterial biomass was separated from the effluent and can...
- 221
- 1.3K
- 0
Hollow fiber membrane design for membrane distillation (MD) and MD based hybrid processes
Ngày tải lên :
10/09/2015, 09:08
... investigated on the membrane macroand micro -structure, mechanical properties and DCMD performance The tensile strength characterizations have proven the excellent mechanical rigidity and elasticity of ... A Cassano, C Conidi, E Drioli, Clarification and concentration of pomegranate juice (Punica granatum L.) using membrane processes, Journal of Food Engineering, 107 (2011) 366-373 [36] A Cassano, ... seawater concentration factors: Role of the membrane on CaCO3 scaling in presence of humic acid, Journal of Membrane Science, 346 (2009) 263-269 [25] X Ji, E Curcio, S Al Obaidani, G Di Profio,...
- 254
- 452
- 0
Development and application of hollow fiber protected liquid phase microextraction for trace organic analysis
Ngày tải lên :
12/09/2015, 08:20
... field sample handling, sample preparation, separation and quantification, statistical evaluation, decision and finally action [2, 3] To obtain accurate results, each step of the analysis is of importance ... is one mass balance for the analytes in both phases: CaqVaq + CoVo = Caq,initialVaq (1-1) where Caq and Co are the concentrations of analyte in the aqueous sample and microdrop organic solvent, ... development and application of hollow fiber-protected LPME techniques to trace organic analysis Chapter provides an introduction to extraction, and particularly, from microscale approaches In Chapter...
- 173
- 290
- 0
Dual layer hollow fiber membrane development for forward osmosis and osmosis power generation
Ngày tải lên :
04/10/2015, 17:06
... and other applications Fig 1.2 Schematic diagram of dual-layer flat sheet membrane co-casting processes (A) Traditional dual-layer flat sheet membrane co-casting process (B) Universal dual-layer ... molecules accumulate near the interfacial region and act like a compatibilizer to assist in the formation of a fully integrated transition layer 3.1.2 Cost-effective and mechanically strong dual-layer ... As a consequence, the de-chlorination of feed water and the chemical backwashing of TFC membranes become crucial in PRO processes that would result in additional equipment and operational costs...
- 83
- 386
- 0
A STUDY OF THE RELATIONSHIP BETWEEN CEO COMPENSATION AND FIRM PERFORMANCE IN THE US AIRLINE INDUSTRY 2002 2006
Ngày tải lên :
11/09/2013, 11:44
... is the passenger load factor because this factor is comparable across airline firms This factor is an operational efficiency indicator of how much of an airline's passenger carrying capacity is ... Research and Security Prices, Standard and Poor’s Compustat database, and each firm’s annual reports CEO total cash compensation (salary plus bonus), stock option grants and exercise prices, CEO ... CEO age and tenure and CEO shareholdings were used as measures of CEO compensation while ROE was adapted as a measure of firm performance The results of the analysis of variance (ANOVA) indicated...
- 132
- 640
- 0
Measuring and Tuning Performance
Ngày tải lên :
05/10/2013, 14:20
... cache to remove temporary files stored in memory Task 3-3 Clearing Memory Cache Launch the SCA, select the Cache tab, and click Clear Memory Cache Click OK to clear the cache and close the SCA ... performance optimally and plan capacity accurately After you have made your capacity estimates, test them on a nonproduction site Based on the data you acquire about users and loads, develop a usage ... The WAST/TCA test bed will also terminate a test when a specific failure criterion is reached TCA produces Excel graphs of measured performance counters and calculates the cost of user transactions...
- 15
- 439
- 0
Fiber Connectivity and Cable Management
Ngày tải lên :
18/10/2013, 19:15
... Acceptance of strength member tie-off hardware • Acceptance of cable clamps at each corner Grounding screws, mounting screws, and dust caps are included with each panel More accessories are available ... Panel, black Includes vertical cable management trough 12 fiber capacity 24 fiber capacity 36 fiber capacity 48 fiber capacity 72 fiber capacity 96 fiber capacity Ordering Number 1.75" (4.45 cm) 3.50" ... Broadcast Products Bulk/Storage Drawer Discrete/Storage Drawer Capacity 3/06 • 102117AE Slack storage type mm cable mm cable 1.7 mm cable Bulk 32 cables, 2.5 m each 48 cables, 2.5 m each 60 cables,...
- 34
- 329
- 0
Tài liệu Democracy and Economic Performance pptx
Ngày tải lên :
09/12/2013, 20:15
... Panama Zambia Central Peru Benin Paraguay Sierra L Argentin Nepal Syria Algeria Somalia United K Trinidad Haiti Egypt Cote d'I Nigeria Nicaragu Madagasc Jordan Costa Ri Gambia Jamaica Guyana ... Senegal Thailand Guatemal Burkina Pakistan Dominica Burundi Kenya Japan Rwanda Gambia Canada Spain Tunisia Malawi Taiwan Jamaica Turkey Morocco Ethiopia Korea Belgium El Salva Venezuel Gabon Brazil ... Senegal Thailand Pakistan Togo Guatemal Burkina Dominica Burundi Kenya Japan Rwanda Gambia Canada Tunisia Spain Malawi Taiwan Turkey Jamaica Morocco EthiopiaSalva Korea Belgium El Brazil Gabon...
- 33
- 504
- 0
Tài liệu Overview Series: Windows Vista Performance and TuningImprove Performance Quickly and EasilyThe doc
Ngày tải lên :
17/12/2013, 13:15
... automatically: Click Start In the Search box, type Task Scheduler Click Task Scheduler In the Actions pane, select Create Basic Task Type a name for the task, and then click Next Select how often ... Right-click any open space on the Windows taskbar and click Task Manager Press CTRL+ALT+DELETE and select Start Task Manager Press CTRL+SHIFT+ESCAPE The main tab in the Task Manager window ... Start, and then click Control Panel In the Control Panel window, click System and Maintenance Click System In the Tasks pane, click Advanced System Settings Enter your administrator credentials and...
- 14
- 270
- 0
CAPITAL STRUCTURE AND FIRM PERFORMANCE IN VIETNAM
Ngày tải lên :
26/12/2013, 15:19
... 1.1.2 Capital structure and capital structure policy 1.1.2.1 Leverage, Capital Structure and Optimal Capital Structure a Capital Structure A firm’s capital structure (or financial structure) ... Weighted Average Cost of Capital (WACC) Weighted Average Cost of Capital (WACC) is the weighted average of cost of each component in a company’s capitap structure These components can be debt, ... are a number of associated practical problems and disadvantages Firstly, we can only calculate cost of equity based on SML approach for companies that pay dividends This means that the approach...
- 54
- 795
- 5