polarography and voltammetry in non aqueous solutions p 223 267 pdf
introduction to polarography and voltammetry
Ngày tải lên :
21/03/2014, 12:18
... determination process Introduction to Polarography and Voltammetry Introduction to Polarography and Voltammetry Direct current methods In the simplest case the polarography measuring principle ... such processes, in particular the rapid SWV as per Osteryoung, which permits very rapid sweeps 42 Introduction to Polarography and Voltammetry 5.4 Stripping chronopotentiometry As in stripping voltammetry, ... Stripping methods 19 5.1 Anodic stripping voltammetry 20 5.2 Cathodic stripping voltammetry 30 5.3 Adsorptive stripping voltammetry 33 5.4 Stripping chronopotentiometry 43 Instrumentation 49 Sample...
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adsorption and diffusion in nanoporous materials, 2007, p.290
Ngày tải lên :
04/06/2014, 15:13
... hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers For permission to photocopy ... gases in porous media and also brings morphological information, in the case of amorphous materials, and structural information, in the case of crystalline and ordered materials Crystalline, ordered, ... 12:02 PM them gave me the opportunity to more deeply understand their philosophy of adsorption systems Professor Rolando M.A Roque-Malherbe, Ph.D Las Piedras, Puerto Rico, USA 46756_C000.fm Page...
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Báo cáo khoa học: "DNase and atelectasis in non-cystic fibrosis pediatric patien" pptx
Ngày tải lên :
12/08/2014, 22:22
... NaCl 0.9% in 16 patients, systemic or inhaled glucocorticoids in 18 patients and physiotherapy in all patients RhDNase was nebulised in 18 patients and was given as a droplet in 12 patients on ... was defined as follows Each X-ray was scored for atelectasis, hyperinflation and mediastinal shift The presence or absence of hyperinflation was marked as point or points, respectively The presence ... decrease >1 kPa, and deterioration was defined as an increase >1 kPa When patients were on mechanical ventilation, the peak inspiratory pressure and the mean airway pressure improvement was defined as...
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Tradition and Change in Administrative Law An Anglo-German Comparison pdf
Ngày tải lên :
06/03/2014, 23:20
... proportionality in English administrative law d) The principle of legitimate expectation in English administrative law Abuse of discretion in German law a) The principle of proportionality in German administrative ... hearing (Art 103 Basic Law), the principle of equality (Art Basic Law) and the principle of proportionality and legitimate expectation (see Arts 48 and 49 Law on Administrative Procedure).^°^ In ... the principle of the separation of powers The Law on Administrative Courts provides for this stricter application of the doctrine by providing for a separate review procedure within the administration...
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Food and health in Europe: a new basis for action pdf
Ngày tải lên :
16/03/2014, 14:20
... local policies can also improve mass catering in the workplace and in private and public institutions In Finland, for example, mass catering provides an excellent means of influencing food intake, ... on food supply, pricing and technology; product promotional activities; and public health messages A combination of consumer demand and commercial investment in mass production and promotion ... first step in developing consistent and comparable assessments for both health and standard-setting purposes; strengthening capacities to conduct health-oriented, population-based monitoring programmes...
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Friction and Lubrication in Mechanical Design Episode 1 Part 2 pdf
Ngày tải lên :
05/08/2014, 09:20
... 0.90, pressures of up to 750 psi and speeds of up to 1650 ftlmin The empirical procedure applied to bearings submerged in an oil bath as well as to pump-fed bearings where the outer shell is exposed ... failed to predict the stiffness and damping behavior of the bearing A model which predicts bearing performance based on appropriate thermal boundaries on the stationary and moving surfaces and includes ... high sliding speeds the friction coefficient approached a common ceiling, which was largely independent of contact pressure, rolling speed and disk temperature At high loads and sliding speeds variations...
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Friction and Lubrication in Mechanical Design Episode 1 Part 6 pdf
Ngày tải lên :
05/08/2014, 09:20
... utilized in the accompanying paper to generate dimensionless relationships, which can be easily used to predict heat partition and maximum temperatures in the contacting surfaces and in the lubricating ... Surface Finish in Turning Operations,” Am Machin., 1956, Vol 100, pp 133-136 Chandiramani, K L., and Cook, N H., “Investigations on the Nature of Surface Finish and Its Variations with Cutting Speed,” ... Research, Proceedings of 3rd International MTDR Conference, Pergamon Press, New York, NY, 1962, pp 235-243 Taraman, K., “Multi-Machining Output-Multi Independent Variable Turning Research by Response...
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Friction and Lubrication in Mechanical Design Episode 1 Part 7 pdf
Ngày tải lên :
05/08/2014, 09:20
... alternating direction implicit method provides considerable inodeling flexibility and computing efficiency I t is capable of handling transient variations in geometry loud, spccd, and material properties ... different pressures, temperatures, and rolling and sliding speed In many concentrated contact problems, the moving solids may have different thermal properties, speeds, bulk temperatures and different ... model described in the previous section which incorporate dimensionless groups representing the system parameters and operating conditions Case 1: Heat Source Moving over a Semi-Infinite Solid (Fig...
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Friction and Lubrication in Mechanical Design Episode 1 Part 8 pdf
Ngày tải lên :
05/08/2014, 09:20
... JOURNALBEARINGS Fluid film bearings are a common means of supporting rotating shafts in rotating machinery In such bearings a pressurized fluid film is formed with adequate thickness to prevent rubbing ... generally interested in predicting beforehand not only the stability of the rotor operation but the expected peak amplitude of whirl orbit at a given operating speed resulting from a particular ... equalize heat partition between the rolling/sliding solids independent of their thermal properties and surface speeds It is interesting to note that the maximum temperature rise for each moving solid...
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Friction and Lubrication in Mechanical Design Episode 2 Part 7 pdf
Ngày tải lên :
05/08/2014, 09:20
... and the intact Fig 9.29 joints can be sunimrized in the following: In the loaded specimens the zoning which predominates in the normiil cartilage disappears The upper surface is eroded and the ... compressive loads This result is interesting in view of the finding of Radin et al [88] that increased calcification and stiffening of the rabbit joints occurred as a result of repeated high impact ... Constraining rig showing the fixture for application of compressive load loads between 450g and 3.6kg The spring is calibrated for continuous monitoring of the normal load which is applied to...
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Friction and Lubrication in Mechanical Design Episode 2 Part 11 pdf
Ngày tải lên :
05/08/2014, 09:20
... alcohol and paper towels The oil is applied to the surface by wiping with a clean, predipped cloth The alcohol is applied by simply dipping the ball (after cleaning) into the alcohol and allowing ... highest point and will be at its null position The pin (b) is then fixed in place by setscrews and the air pressure is applied on pin (d) The positioning fixture is then withdrawn The ball is left in ... 1-220 486 Chapter I2 Yoder, M., “Diamond Properties and Applications,” Diamond Films and 10 11 Coating: Development, Properties, and Application, Davis, R (Ed.), Park Ridge, NJ, Noyes Publications,...
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Friction and Lubrication in Mechanical Design Episode 2 Part 12 pdf
Ngày tải lên :
05/08/2014, 09:20
... loop for the apparatus itself The pin (p) was withdrawn from the loading fork (h) and the particular load regime is then applied to the ball The following are samples of the tests performed in ... displacements in the region close to gross slip than expected by Mindlin’s theory [2, 31 Repeated cycling caused strain hardening and brought the load4isplacement curves closer to Mindlin’s prediction ... thermohydrodynamic phenomenon discussed in Chapter 13.4.1 Experimental Setup The experimental setup is diagrammatically represented in Fig 13.18 The main components of the setup and a brief explanation...
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Báo cáo y học: " A heuristic approach and heretic view on the technical issues and pitfalls in the management of penetrating abdominal injuries" pdf
Ngày tải lên :
13/08/2014, 23:20
... the blood supply of the vital organs and results in partial control of the intra abdominal hemorrhage, maintaining an acceptable blood pressure and facilitating effective intraabdominal dissection ... isolates the injury while it maintains the blood flow in the IVC by bypassing the injury site, is challenging to perform: just consider a tense inexperienced surgeon inserting a purse string in a flimsy ... manuscript BC: Contribution in writing manuscript MD: Contribution in writing manuscript ED: Contribution in writing manuscript and overall supervision All authors have read and approved the final...
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Báo cáo toán học: " Nonexistence of nontrivial solutions for the p(x)-Laplacian equations and systems in unbounded domains of Rn" docx
Ngày tải lên :
20/06/2014, 21:20
... Khodja, Nonexistence of solutions for semilinear equations and systems in cylindrical domains Comm Appl Nonlinear Anal (2000), 19-30 10 W NI & J Serrin, Nonexistence thms for quasilinear partial ... normal to ∂ω at the point x) In this work we are interested in the study of the nonexistence of nontrivial solutions for the p (x)-laplacian problem − p( x) u = H (x) f (u) in Ω Bu = on ∂Ω (1.1) ... | u| p( x)−2 n i=1 ∂u ∂ u ∂xi ∂xi ∂xj ∂ p( x) ∂xj = | u| p( x) p ∂xj − p( x) p2 (x) | u| p( x) ln | u| we have | u| p( x) + n j=1 Ω∩BR xj ∂ p( x) ∂xj n − | u| | u| p( x) n − j=1 (x, p( x)) p2 (x) p( x)...
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The development and study of titanium dioxide based buoyant composite photocatalyts for improved applications in photocatalytic degradation of organic pollutants in aqueous solutions
Ngày tải lên :
10/09/2015, 15:50
... radical PC Polycarbonate PE-CVD Plasma enhanced chemical vapor deposition PET Poly ethylene terephtalate PMMA Poly methyl methacrylate PP Polypropylene PPF Polypropylene fabric PPG Polypropylene ... Figure XPS survey spectra of PPF before pre-treatment (a) and after pre-treatment (b); XPS C1s spectra of PPF before pre-treatment (c) and after pre-treatment (d); XPS O1s spectra of PPF before pre-treatment ... performance in phenol removal from aqueous solutions In the first part, TiO2 was modified by doping mainly nitrogen and immobilized on PP granules (PPGs) to prepare a buoyant composite photocatalyst...
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Study in the preparation of poly (4 vinylpyridine) based nanoparticles and their application as an effective adsorbent for the recovery of palladium from aqueous solutions
Ngày tải lên :
10/09/2015, 15:54
... collocation on finite elements Pd(II) Palladium (II) P4 VP Poly(4-vinylpyridine) P4 VP060 Poly(4-vinylpyridine) nanoparticles with diameter of 60 nm P4 VP250 Poly(4-vinylpyridine) nanoparticles with ... mmole-Pd/g -P4 VP (iii) and qeqm = 5.23 mmole-Pd/g -P4 VP For (c), (ii) qeqm = 1.57 mmole-Pd/g -P4 VP (iii) and qeqm = 3.36 mmole-Pd/g -P4 VP 140 Figure 4.5 XPS Pd 3d spectra of P4 VP-Pd at various pH The Pd ... FT-IR spectra of the representative P4 VP-based nanoparticles synthesized in this work (a) Prisitine P4 VP nanoparticles (A-2), (b) P4 VP-PEGMA nanoparticles (B-5) and (c) P4 VP-PEGMA-MATMAC nanoparticles...
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Growth and p doping of zinc oxide nanostructures and films in aqueous solution
Ngày tải lên :
14/09/2015, 08:26
... magnetron sputtering and pulsed laser deposition, appear to be the method of choice for growth and in- situ p- and n-type doping There are only a few reports employing solution methods for ntype ZnO and ... acceptors, and the recent report of successful p- type doping using Na using PLD [46] and the processing advantages of doping in solution phase, it is another objective of this thesis to investigate p- doping ... method is employed to grow and dope a p- type ZnO film with potassium from group I as the pdopant To the best of our knowledge, this is the first report of extrinsic p- type doping using aqueous solution...
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The effects of chloride ions on the hydrogen gas generation and TCE degradation in aqueous solutions containing zero valent iron
Ngày tải lên :
13/05/2016, 10:16
... expel oxygen before installing the Mininert valves All bottles were placed in a shaking incubator at 30 0C and 150rpm The experiments were prepared in triplicate Concentration of hydrogen gas in ... There are two kinds of approach when consider hydrogen gas generation by ZVI They are from electro-chemical standing point and environmental standing point Electro-chemical standing point: estimates ... was injected to the bottle after sampling to maintain the same pressure in the bottle After finishing the experiments, 20mL aqueous phase samples were collected via 5mL disposable syringes and...
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Phosphate removal from aqueous solutions using red mud wasted in bauxite Bayer's process
Ngày tải lên :
23/09/2012, 14:47
... potassium orthophosphate (OPh) or sodium tripolyphosphate (TPPh) were prepared The latter is known as a binding agent in synthetic detergent production thus being a source for water pollution To a ... with TPPs -solutions (30 for raw mud and only for activated red mud) It is known that orthophosphates and polyphosphates have different interactions with metals and sorptive surfaces Orthophosphates ... The influence of the raw red mud dose on the PO removal (O-OPh, A-TPPh) In this paper the investigations on red mud wasted from Guinean bauxite and its utilization for phosphate removal from aqueous...
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