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wyszukanych pozycji: 513
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Liquid Crystalline of Alumina : Grafted with Acrylic Acid and Organic Monomers and its Adsorption Properties
ISBN: 9783639365757 / Angielski / Miękka / 2011 / 128 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. In this work commercial ceramic material aluminum oxide (alumina, Al2O3) was grafted and extended by three different monomers using free radical polymerization. These monomers are acrylic acid, 4-(4'-butoxy- and 4'-octoxybenzylideneamino) phenylmthacrylate to produce three polymers; polymer A, polymer B and polymer C. The last two polymers showed liquid crystalline properties. The ability of these three alumina-grafted polymers was examined for adsorption of phenol and p-chlorophenol under different conditions i.e., initial concentrations, pH and temperatures.
In this work commercial ceramic material aluminum oxide (alumina, Al2O3) was grafted and extended by three different monomers using free radical polym...
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cena:
270,10 zł |
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Removing of Some Organic and Inorganic Pollutants
ISBN: 9783843363297 / Angielski / Miękka / 2010 / 212 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. The use of Iraqi Clay Minerals (ICM) for the removal of hazardous organic and inorganic water pollutants is investigated using synthetic aqueous solutions. Four locally available clays namely, bentonite, kaolinite, porcelainite and diatomite, were purified, sampled and characterized by XRD, XRF, FTIR spectroscopy and SEM. The surface areas were determined using BET and methylene blue adsorption method. Cation exchange capacity (CEC) was estimated using the method of adsorbing an ethylenediamine complex of copper method and the modifier loading was calculated from the total carbon analysis....
The use of Iraqi Clay Minerals (ICM) for the removal of hazardous organic and inorganic water pollutants is investigated using synthetic aqueous solut...
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cena:
361,66 zł |
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Removal of Nitrophenols by Modified Attapulgite
ISBN: 9783659235061 / Angielski / Miękka / 2012 / 116 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. This thesis concerns with the use of Iraqi Clay (attapulgite) for the removal of hazardous organic water pollutants, namely o-nitrophenol, m-nitrophenol and p-nitrophenol from their aqueous solutions. Attapulgite was modified by surfactant (hexadecyltrimethylammonium bromide (HDTMA)). Attapulgite and its modified form (A-HDTMA), were purified, sampled and characterized by X-ray diffraction (XRD), FTIR spectroscopy, scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) technique. Batch experiments were carried out at pre determined equilibration time, solution pH,...
This thesis concerns with the use of Iraqi Clay (attapulgite) for the removal of hazardous organic water pollutants, namely o-nitrophenol, m-nitrophen...
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cena:
224,32 zł |
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Durability Study of High Impact Polystyrene
ISBN: 9783845476513 / Angielski / Miękka / 68 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. The durability of high impact polystyrene (HIPS) as food packaging of dairy products was studied. Samples cut from container made from HIPS were exposed to different weathering conditions for 25, 50, 75 and 100 hours and with two stages tests before and after being used in food packaging using artificial aging in Xenontest-150 device. Three mechanical properties, tensile strength, elongation at break and impact strength were measured before and after the exposure to UV radiation. In general all mechanical properties decrease with time of exposure to UV light. Embrittlement of HIPS with...
The durability of high impact polystyrene (HIPS) as food packaging of dairy products was studied. Samples cut from container made from HIPS were expos...
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cena:
224,32 zł |
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Le Transport de Demain: L Avion À Fuselage Intégré
ISBN: 9783841736536 / Francuski / Miękka / 2018 / 128 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. L'avion A fuselage intA(c)grA(c) (Blended Wing Body en anglais) est basA(c) sur le concept d'aile volante et prA(c)sente des performances amA(c)liorA(c)es comparA(c) A des avions conventionnels. L'objectif principal de cette A(c)tude est d'effectuer la conception conceptuelle d'un avion de type BWB de 200 passagers et de comparer les performances obtenues A un avion classique l'A320 A(c)quivalent en termes de nombres de passagers et distance franchissable. Un processus d'optimisation est implA(c)mentA(c) afin d'obtenir des performances amA(c)liorA(c)es tout en respectant les contraintes.
L'avion A fuselage intA(c)grA(c) (Blended Wing Body en anglais) est basA(c) sur le concept d'aile volante et prA(c)sente des performances amA(c)liorA(...
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cena:
255,91 zł |
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La Résolution Européenne de Larticle 88-4 de la Constitution
ISBN: 9783841636300 / Francuski / Miękka / 2018 / 424 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. L'usage de la resolution a debute en 1992, quand un nouvel article, le 88-4, a ete introduit dans la Constitution, donnant pour la premiere fois a l'Assemblee nationale et au Senat le droit de voter des resolutions sur des projets et propositions d'actes communautaires soumis par le Gouvernement. Le but de cet avantage en faveur du Parlement etait de mettre en vigueur un controle parlementaire sur la politique europeenne du Gouvernement. Au cours des annees, la pratique de la resolution europeenne montre l'inefficacite du role du Parlement au niveau europeen. La portee de la resolution...
L'usage de la resolution a debute en 1992, quand un nouvel article, le 88-4, a ete introduit dans la Constitution, donnant pour la premiere fois a l'A...
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cena:
631,30 zł |
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Une recherche herméneutique en didactique de la microbiologie
ISBN: 9786131583759 / Francuski / Miękka / 2018 / 132 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. Le livre comporte une recherche hermA(c)neutique que nous avons menA(c)e A propos des conceptions des A(c)lA]ves sur les potentialitA(c)s du monde microbien. Au cours d'une enquAate exploratoire, nous avons constatA(c) que pour la quasi-totalitA(c) de nos A(c)lA]ves les microbes sont des organismes mystA(c)rieux et malfaisants, qui ne sont considA(c)rA(c)s qu'au travers des maladies graves que certains d'entre eux provoquent chez l'homme et les animaux. Cette reprA(c)sentation massive occulte complA]tement le fait que nous ne saurions vivre sans eux. En effet, la dA(c)couverte du monde...
Le livre comporte une recherche hermA(c)neutique que nous avons menA(c)e A propos des conceptions des A(c)lA]ves sur les potentialitA(c)s du monde mic...
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cena:
255,91 zł |
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L'Expérimentation Stratégique Du Business Model
ISBN: 9783838188850 / Francuski / Miękka / 2018 / 440 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. Face A un environnement hyper compA(c)titif et en constante mutation, les entreprises sont souvent amenA(c)es A reconsidA(c)rer leur modA]le de crA(c)ation de valeur. Ceci passe souvent par une dA(c)marche d'expA(c)rimentation stratA(c)gique. DA(c)finie comme un processus itA(c)ratif d'essai et d'erreur par lequel les entreprises explorent de nouvelles sources de revenus et testent de nouveaux concepts d'affaires, l'expA(c)rimentation stratA(c)gique s'associe A une heuristique de changement et d'innovation du business model. Dans cette recherche, nous rA(c)pondons A la question de savoir:...
Face A un environnement hyper compA(c)titif et en constante mutation, les entreprises sont souvent amenA(c)es A reconsidA(c)rer leur modA]le de crA(c)...
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cena:
526,01 zł |
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Raffinement Et Refactoring de Spécifications UML
ISBN: 9786131574573 / Francuski / Miękka / 2018 / 184 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. La spA(c)cification de systA]mes complexes est une tA che difficile qui ne peut Aatre accomplie en une seule A(c)tape. Dans les mA(c)thodes formelles, le concept de raffinement a donnA(c) lieu A de nombreux travaux dans lesquels la preuve de la correction entre les diffA(c)rents A(c)tats de spA(c)cifications joue un rAle important. L'activitA(c) de refactoring consiste A restructurer un modA]le en vue d'amA(c)liorer certains facteurs de qualitA(c), tout en prA(c)servant la cohA(c)rence de ce modA]le.Ce travail prA(c)conise l'utilisation de deux techniques de raffinement et de refactoring afin...
La spA(c)cification de systA]mes complexes est une tA che difficile qui ne peut Aatre accomplie en une seule A(c)tape. Dans les mA(c)thodes formelles,...
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cena:
270,10 zł |
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Dehydration of Ethanol-Water Azeotropic Mixture
ISBN: 9783848438259 / Angielski / Miękka / 2012 / 72 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. The potential use of raw and activated phillipsite as well as calcium chloride salt for separating the ethanol-water azeotropic mixture in the adsorptive distillation process was assessed in this book 4A molecular sieves was taken as a reference adsorbent to which the water adsorption on selected materials was compared. The breakthrough curves of water sorption on these adsorbents showed that the treatment of phillipsite with 1M calcium chloride (1M-phillipsite) produced the best separation of the ethanol-water azeotropic mixture, where the breakthrough time is about 55 mins which is almost...
The potential use of raw and activated phillipsite as well as calcium chloride salt for separating the ethanol-water azeotropic mixture in the adsorpt...
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cena:
224,32 zł |
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Finding the Core Value: Passion in Action
ISBN: 9781496980045 / Angielski / Miękka / 2014 / 130 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych (Dostawa przed świętami) |
cena:
78,34 zł |
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SUBSTITUIÇÃO TOTAL DO JOELHO:
ISBN: 9786203282016 / Portugalski / Miękka / 52 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. |
cena:
182,66 zł |
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Solar-Powered Absorption Cooling and Supermarket Refrigeration Systems
ISBN: 9783639712506 / Angielski / Miękka / 2014 / 112 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. This book consists of two different research problems. In the first one, the aim is to model and simulate a solar-powered, single-effect, absorption refrigeration system using a flat-plate solar collector and LiBr-H2O mixture as the working fluid. The cooling capacity and the coefficient of performance of the system are analyzed by varying all independent parameters, namely: evaporator pressure, condenser pressure, mass flow rate, LiBr concentration, and inlet generator temperature. The cooling performance of the system is compared with conventional vapor-compression systems for different...
This book consists of two different research problems. In the first one, the aim is to model and simulate a solar-powered, single-effect, absorption r...
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cena:
219,28 zł |
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Bioinzheneriq i äxpressiq gena FVIII cheloweka
ISBN: 9786203010992 / Rosyjski / Miękka / 100 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. |
cena:
173,50 zł |
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Applied Mechanical Design
ISBN: 9781848218222 / Angielski / Twarda / 2018 / 504 str. Termin realizacji zamówienia: ok. 22 dni roboczych. This book is the result of lessons, tutorials and other laboratories dealing with applied mechanical design in the universities and colleges. In the classical literature of the mechanical design, there are quite a few books that deal directly and theory and case studies, with their solutions.
This book is the result of lessons, tutorials and other laboratories dealing with applied mechanical design in the universities and colleges. In the...
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cena:
782,01 zł |
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Lessons from the Stories of the Quran
ISBN: 9798610097886 / Angielski / Miękka / 2020 / 106 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych (Dostawa przed świętami) |
cena:
31,88 zł |
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Die Blockchain-Technologie und Online-Dienste
ISBN: 9786207992980 / Niemiecki Termin realizacji zamówienia: ok. 10-14 dni roboczych. |
cena:
278,80 zł |
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Mary Edwards Walker: America's Only Female Medal of Honor Recipient
ISBN: 9798642560105 / Angielski / Miękka / 2020 / 324 str. Termin realizacji zamówienia: ok. 13-18 dni roboczych (Dostawa przed świętami) |
cena:
68,25 zł |
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Think Consumer: The Enforcement of the Trade Mark Quality Guarantee Revisited, A Legal and Economic Analysis
ISBN: 9781443826860 / Twarda / 2011 / 235 str. Termin realizacji zamówienia: ok. 22 dni roboczych. The availability of a wide range of branded products makes the selection of the right type of goods a difficult process. This is particularly true in the case of goods whose characteristics consumers do not have complete information about, which they can only learn about after purchasing (experiencing goods). A trade mark quality guarantee facilitates consumers’ choice by sending quality signals. It also enables a trader of branded goods to differentiate the quality of his goods from those of his competitors. Accordingly, trade mark protection is said to enhance economic efficiency, and...
The availability of a wide range of branded products makes the selection of the right type of goods a difficult process. This is particularly true in ...
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cena:
207,83 zł |
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Tehnologiq blokchejn i onlajn-serwisy
ISBN: 9786207993215 / Rosyjski / Miękka / 124 str. Termin realizacji zamówienia: ok. 10-14 dni roboczych. |
cena:
278,80 zł |
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