introduction of fibre reinforced polymers − polymers and composites concepts properties and pr

Synthesis and characterization of novel jacketed polymers and investigation of their self assembly and application 6

Ngày tải lên : 16/09/2015, 17:11

... strategies that provide greater control over polymer size and shape than hitherto possible in commercial polymers Molecular stiffness enables the precise placement and functional control of shape-persistent ... shape-persistent polymers Stiff polymers, combined with precise molecular placement, are good candidates for the construction of fine microstructure Compared with normal rigid building blocks, the jacketed polymers ... fibrous structure of pristine polymer A series of novel chromophore rich polymers towards developing radiation sensitive materials as e-beam resist were synthesized and characterized The polymers were...

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Synthesis and characterization of novel jacketed polymers and investigation of their self assembly and application 5

Ngày tải lên : 16/09/2015, 17:11

... Optical properties The spectroscopic properties of polymers 3a, 3b and 3c were measured in chloroform solution The absorption and emission spectra of the polymers are shown in Fig.5.3 and the ... The effect of the concentration of chromophoric polymers on sensitivity of the photo resists The good solubility and lack of crystallization of the chromophore-immobilized polymers 3a and 3b in ... crystallize and precipitate out of the resist film and show a heterogeneous distribution Here we use the chromophore-immobilized polymers to prevent the heterogeneous distribution of the chromophores and...

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Synthesis and characterization of novel jacketed polymers and investigation of their self assembly and application 4

Ngày tải lên : 16/09/2015, 17:11

... Mw: 1.16 × 104; PD: 1.9 4.2.4 Preparation of complexes Appropriate amounts of host polymer and dodecylbenzenesulfonic acid (DBSA) were separately dissolved in appropriate solvent (for P1, in THF; ... shifts of the absorption bands of functional groups provide information on the nature and intensity of the interactions Figure 4.1 shows the FTIR spectra of P1(DBSA)x, where the x is 0.5, 1.0 and ... side-chain, and network structures, have been prepared by the self-organization of polymers and small molecules The noncovalent interactions play a key role in the formation of assembled structures, and...

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Synthesis and characterization of novel jacketed polymers and investigation of their self assembly and application 3

Ngày tải lên : 16/09/2015, 17:11

... distribution This new approach of synthesis of mesogenic polymer offers a rational design for the organized supramolecular materials 4, 22-23 Here, we report the synthesis of a series of polymers with ... amount of the monomer used The structures of all monomers and polymers prepared in our work were characterized by 1H NMR and FTIR Figure 3.1 illustrates two representative 1H NMR spectra of monomer ... Smectic layer distance, and d2 is the diameter of the cylindrical core, which comprised of mesogenic units and the backbone of the polymers a b Figure 3.7 AFM images (contact mode) of film on mica by...

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Synthesis and characterization of novel jacketed polymers and investigation of their self assembly and application 2

Ngày tải lên : 16/09/2015, 17:11

... amount of the monomer used The structures of all monomers and polymers prepared in our work were characterized by 1H NMR and FTIR Figure 2.2.1 illustrates two representative 1H NMR spectra of monomer ... 1.3 2.2.3 Results and discussion 2.2.3.1 Synthesis of polymers The polymers were synthesized through radical polymerization from the appropriate monomers The concentration of initiator BPO was ... spacings of 35.9Å, 30.6 Å and 18.0 Å are derived It also offers a sharp reflection in the middle angle region and a broad halo at 2θ = 7.42 and 19.9 °, from which d spacings of 11.9 Å and 4.5...

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Synthesis and characterization of novel jacketed polymers and investigation of their self assembly and application

Ngày tải lên : 16/09/2015, 17:11

... largely on the primary structure and the segmental interaction of polymers It is well known that the chain stiffness of polymers offers a method of controlling the spatial arrangement of a polymer ... intriguing properties are extensively discussed9,10,13 Generally, the rigid components are incorporated on the main chain of the polymers Further studies are required to understand the properties of ... monomers and polymers prepared in our work were characterized by 1H NMR and FTIR Figure 2.1.1 illustrates two representative 1H NMR spectra of monomer 6a and polymer 7a In the 1H NMR spectra of monomer...

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FATIGUE BEHAVIOUR OF FIBRE REINFORCED BITUMINOUS MIXTURES FROM INDIRECT TENSILE FATIGUE TEST

Ngày tải lên : 01/04/2013, 22:43

... by keying in values of Sbit volume of binder and volume of aggregate Sbit was also determined from the first part of the BANDS program based on the penetration index and softening point These ... (1998), "The Properties and Performance of Polymer Fibre Reinforced Hot-Rolled Asphalt", Unpublished PhD thesis, University of Leeds Tons, E and Krokosky, E.M., (1960), "A study of Welded Wire ... the higher toughness and energy that were characteristic of the fibre mixes This combination of properties may mean that more energy is required to produce a crack in the fibre- modified mixes...

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Báo cáo y học: "Introduction of oral vitamin D supplementation and the rise of the allergy pandemic" docx

Ngày tải lên : 08/08/2014, 21:20

... statistics of sickness relating to the earliest year of life Its principal seats are Germany, England, Holland, Belgium, France and Northern Italy while southern Italy, the southern provinces of Spain, ... London and New York and marketed as an aid for physical fortification and constitutional improvement An advertisement for a cod liver oil medicine in the April 18, 1890 issue of Science pro- http://www.aacijournal.com/content/5/1/8 ... specific, potent preventive, and this was endorsed by many physicians" [9] This tradition was restricted to the coasts of England, Holland, and France [10] Industrialized cod liver oil production (as...

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Numerical modelling of fibre suspensions in newtonian and non newtonian fluids

Ngày tải lên : 15/09/2015, 17:09

... The influence of non-Newtonian suspending fluids on fibre evolution and fibre- fibre interaction will lead to the changes of fibre orientation and hence the rheological properties of fibre suspensions ... model of fibre suspensions is proposed and presented in Chapter The fibre- solvent interaction and the fibre- fibre interaction are thoroughly studied and investigated through the single-rod problem ... applications and industries over the last decades There are two main types of fibre reinforced composites: the continuous -fibre composites (CFCs) and the short -fibre composites (SFCs) The continuous-fibre...

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Tài liệu THE IMPACT OF THE RECESSION ON VALUE AND PREMIUM GOODS doc

Ngày tải lên : 19/02/2014, 03:20

... knee-jerk price cutting and think more about how to innovate in private label goods, maybe by expanding the range of goods on offer into premium quality products Invest in marketing of these and in promoting ... by the recession Coffee is a perfect example of the power of brand equity We can see below the growth in unit sales of premium coffee products from 08-09 far outstripped value and mid-tier equivalents ... increase in price of raw materials felt by most other European countries and the rise of private label has been almost inevitable, as consumers look to buy cheaper products Private label now stands...

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NATIONAL REPORT OF MALAYSIA ON THE FORMULATION OF A TRANSBOUNDARY DIAGNOSTIC ANALYSIS AND PRELIMINARY FRAMEWORK OF A STRATEGIC ACTION PROGRAMME FOR THE BAY OF BENGAL potx

Ngày tải lên : 06/03/2014, 15:21

... information on the use of, and threats to, the Malaysian coastal and marine resources off the Straits of Malacca and the adjacent waters of the Andaman Sea and the Indian Ocean In the process, an attempt ... (Prescribed (Prescribed Premises)(Law Activities Natural Environmental Rubber) Impact The above regulations stipulate the standards and procedures for handling the various types of domestic and ... environment (Chua, at el., 1997) Semi and intensive culture of finfish and prawns has often been associated with eutrophication of coastal waters and the spread of disease For example, aquaculture...

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Ceylon; an Account of the Island Physical, Historical, and Topographical with Notices of Its Natural History, Antiquities and Productions, Volume doc

Ngày tải lên : 07/03/2014, 14:20

... Mahawanso Outline of the Mahawanso Turnour's epitome of Singhalese history Historical proofs of the Mahawanso Identity of Sandracottus and Chandragupta Ancient map of Ceylon (note) List of Ceylon sovereigns ... and renown The victory of Dutugaimunu Progress of the south of the island Building of the great Ruanwellé Dagoba Building of the Brazen Palace Its vicissitudes and ruins Death and character of ... traditions of their splendour and profusion; and fabulous as this story of the ruby of the Kandyan kings may be, the abundance of gems in Saffragam has given to the capital of the district the name of...

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Determinants of commercial bank interest margins and profitability: some international evidence ppt

Ngày tải lên : 15/03/2014, 14:20

... before-tax profits over total assets, or before tax profit/ta By s straightforward accounting, before tax profit/ta is the sum of after-tax profits over total assets, or net profit/ta, and taxes ... relationship between capitalization and profitability, and a negative relationship between reserves and profitability Other important determinants of bank margins and profitability, such as ownership, ... characteristics and the macro environment, we provide an economic analysis of the determinants of the interest and profitability variables, net interest margin, and before tax profit/ta This empirical...

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The Sensitivity of Bank Net Interest Margins and Profitability to Credit, Interest-Rate, and Term-Structure Shocks Across Bank Product Specializations potx

Ngày tải lên : 15/03/2014, 14:20

... k + y k d ( BEAk − p ()) − L k f (rk , t ) − L k σ rk dz k − rk dL k ⎟ ⎝ k =1 ⎠ dNIM t = ( BEAk − Pt ()) − NIM t d ( BEAt − Pt ()) ( BEAt − Pt ()) (9) Since the promised value of the debt is fixed, ... of the repricing gap, the difference between assets and liabilities in the same repricing frequency, or cumulative repricing frequencies The hypothesis of a random walk is perhaps most appropriate ... single-product model of Ho and Saunders to include heterogeneous loans and deposits, and posits that pure interest spreads may be reduced as a result of product diversification Saunders and Schumacher...

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A pilicy sciences viek of future studies: Altenative futures and present action pptx

Ngày tải lên : 16/03/2014, 18:20

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Joint Guidance on the Application of the Family Educational Rights and Privacy Act (FERPA) And the Health Insurance Portability and Accountability Act of 1996 (HIPAA) To Student Health Records docx

Ngày tải lên : 22/03/2014, 15:21

... to anyone other than professionals providing treatment to the student, or to physicians or other appropriate professionals of the student’s choice However, this does not prevent an educational ... officials and other professionals on these important matters affecting the safety and security of our nation’s schools II Overview of FERPA FERPA is a Federal law that protects the privacy of students’ ... identifiable health information by requiring appropriate safeguards to protect privacy, and setting limits and conditions on the uses and disclosures that may be made of such information without patient...

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The Health Effects of Air Pollution: Separating Science and Propaganda pptx

Ngày tải lên : 29/03/2014, 18:20

... Bartel and L G Thomas, “Predation through Regulation: The Wage and Profit Effects of the Occupational Safety and Health Administration and the Environmental Protection Agency,” Journal of Law and ... and propaganda The Health Effects of Air Pollution Separating Science and Propaganda Joel Schwartz May 2006 Table of Contents Executive Summary Does Air Pollution Cause Asthma? 10 12 13 15 Introduction ... Instead, ethics and practicality require that researchers use non-random observa- | separating science and propaganda 11 tional data and try to statistically tease out the putative effects of air pollution...

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Economic Analysis of Investment Operations: Analytical Tools and Practical Applications doc

Ngày tải lên : 30/03/2014, 18:20

... value of the project, the probability distribution of the outcome, and the probability of project failure By ranking the variables in terms of their impact on project outcomes and probability of ... because of inflation, or because the underlying conditions of supply and demand change Real prices refer to prices of goods and services that reflect changes in the underlying conditions of supply and ... market price as an indicator of the cost to society of transferring one unit of a good to a government project, because there are now two prices: the price that demanders pay and the price that...

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báo cáo sinh học:" Managerial competencies of hospital managers in South Africa: a survey of managers in the public and private sectors" docx

Ngày tải lên : 18/06/2014, 17:20

... 116 of 210 valid addresses of public sector managers and 87 of 179 valid addresses of private sector managers This represents a total response rate of 51.91% and a response rate of 55.23% and ... anecdotes of patient dissatisfaction and disaffections, and personal observation [2-4] In contrast, the privately owned and managed hospitals are amongst the more profitable of enterprises and compare ... participate) and all managers of private hospitals registered with the Hospital Association of South Africa, who represent 94% of private hospitals in the country The final sample comprised 215...

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báo cáo sinh học:" Job satisfaction and motivation of health workers in public and private sectors: cross-sectional analysis from two Indian states" ppt

Ngày tải lên : 18/06/2014, 17:20

... of Health and Family Welfare, and a random sample was taken of 70 large hospitals, 70 small hospitals, and 100 primary health centers, with health providers randomly selected from a list of providers ... hospitals, and 25 primary health clinics and/ or solo practitioners were randomly selected from the lists of public and private facilities in each district, using a random starting point and fixed ... India: Andhra Pradesh (AP) and Uttar Pradesh (UP) The study identifies and assesses differences in the perceived importance and actual presence of job characteristics related to motivation of doctors...

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