chemical modifications of chitosan intended for biomedical applications

... surface of natural fibres This helped increase the strength of the Bio composites made from them Chemical Modifications Chemical modification utilizes chemical agents to modify the surface of fibres ... surface of fibres and enhance the performance of final natural fibre – based products It is believed that the application of NT to modify natural fibres offers high economic potential for the ... lignin Mechanical properties of Natural fibres Disadvantages of Natural fibres for applications in composites       Enormous Variability in Properties Lack of FIBRE – MATRIX adhesion Poor...

Ngày tải lên: 21/07/2015, 16:18

... runway Of course, I mustn’t forget thanks for you This dissertation is a culmination of all the years you helped me, pushed me, and were there for me Life begins now and I am so excited Thank you for ... Distributions of Monovinyl-functional Polystyrene Oligomers 106 4.4.5.1.2 Thermal Analysis of the Monovinyl Polystyrene 108 4.4.5.2 Chemical Modifications of PMHS and PDMS-co-PMHS to Form Polystyrene ... precisely controlled is the focus of chapter A series of vinylsilylpropyl alcohol initiators for the polymerization of ethylene oxide were prepared via several chemical modifications These vinyl functional...

Ngày tải lên: 13/11/2014, 16:16

... devices for BioMEMS applications The emphasis is on the development of new hot embossing techniques, the design of microfluidic functions and biocompatible packaging methods for polymeric microfluidic ... Design of superhydrophobic valve for plastic microfluidic chips, US Porvisional Patent Application, 60/738,096, Nov 18, 2005 FIELDS OF STUDY Major Field: Chemical Engineering Minor: Microfluidics ... mechanism of surface morphology evolution for Pani/Ppy double layer on PMMA……………………………… 174 Photo of water profile on achieved super-hydrophobic surface (a) before and (b) after protein treatment for...

Ngày tải lên: 14/11/2014, 13:26

... SYNTHESIS OF WATER SOLUBLE SUPERPARAMAGNETIC NANOCOMPOSITES FOR BIOMEDICAL APPLICATIONS Erwin (B Eng., HONS.), NUS A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY (PH.D) DEPARTMENT OF MATERIALS ... Characterization of MFNPs 131 5.3.2 Synthesis and Characterization of PMAO-g-PEG 133 5.3.3 Formation of Water Soluble MFNCs: Tuning the MFNPs Core 139 5.3.4 Formation of Water Soluble ... image of MFNPs in CHCl3 (inset: SAED pattern of respective MFNPs samples) (c) TEM size distribution of hydrophobic MFNPs in CHCl3 (d) XRD pattern of crystalline MFNPs (e) Hysteresis loop profile of...

Ngày tải lên: 09/09/2015, 11:31

... model is composed of many delicate tissue voxels, the simulation of which would be quite time-consuming even for workstations Therefore for the saving of simulation time, often part of the human body ... composed of coil pairs This chapter presents the investigation of the mutual effect between coupling coils and coupling antennas for biomedical applications for the first time Description: For neuro-recording ... is selected for the forward data telemetry And a high-frequency (fBT > 400 MHz) carrier is selected for the back telemetry Table 1-1 Common frequency bands for data communication for biomedical...

Ngày tải lên: 10/09/2015, 09:12

... SURFACE FUNCTIONALIZATION OF TITANIUM FOR BIOMEDICAL APPLICATIONS ZHANG FAN (B.Eng.(Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CHEMICAL AND BIOMOLECULAR ... series of biologically active molecules to improve the performance of titanium substrates for biomedical applications In Chapter 2, the properties of titanium and its applications in biomedical ... form multinucleated foreign body giant cells that often persist for the entire lifetime of the implant (Salthouse, 1984) The last stage of the foreign body reaction involves the walling off of...

Ngày tải lên: 14/09/2015, 08:37

... composed of cellulase from Trichoderma reesei with the enzyme activity of 700 IU/g, and Novozyme 188 is composed of Cellobiase from Aspergillus niger with the enzyme activity of 250 IU/g The effect of ... 2, 1.6 g of wheat straw was mixed in 50 ml of sterilized distilled water in 100 ml shaker flask and autoclaved at 135°C for h During Experiment and 4, 1.6 g of wheat straw in 50 ml of sterilized ... sample tube format and CytoSoft Software with expandable software modules Samples were diluted 20-fold using deionized water The diluted samples were repeatedly vortexed at high speed for and thereafter,...

Ngày tải lên: 05/09/2013, 15:28

... respectively He is a professor of School of Energy and Environment, Hebei University of Technology Since from 2005, he has taken as the dean of School of Energy and Environment of HBUT His work focuses ... except for sand samples, the present method can also be applied for other porous materials with the grain diameter of 0.1-0.6 mm For porous media with smaller grain diameters, the adaptability of ... the hydraulic characteristics of porous media and especially plays an important role in the modelling of the heat transfer of BHEs in an aquifer for geothermal applications This paper presented...

Ngày tải lên: 05/09/2013, 17:03

... with a pitch of mm Pressure sensor Temperature sensor MEMS Mass Flow Meter N2 Channel chip Inlet Bonding wires Multi-sensor array chip picture of a packaged device PCB Schematic of packaged device ... Temperature distribution (c ) Relative output change of shear stress sensors Measurement of fully developed compressible channel flow (Mach number = 0.6 ) Microflow (µl) Sensor Bottom View Top View Flow ... ESI Nozzle for Protein Mass Spectrometry SEM of Capillary Tips 16+ 15+ 17+ 2.5 mm 18+ 20+ 14+ Relative Abundance 19+ 21+ 22+ 23+ 13+ 24+ 25+ 600 12+ 800 1000 1200 1400 m/z Taylor Cone Formation...

Ngày tải lên: 22/12/2013, 21:17

... APPENDIX C: INTRODUCTION OF C PROGRAMMING FOR DSP APPLICATIONS Instead of using short and long data type, the example code uses Word16 for the 16bit integer data type and Word32 for the 32-bit data ... function returns the number of items successfully read The operator sizeof(object)has a value that is the amount of storage required by an object The values of sizeof for different data types may ... the beginning of the variables in the calling program's memory For example, the main function calls the function shift as 480 APPENDIX C: INTRODUCTION OF C PROGRAMMING FOR DSP APPLICATIONS shift(xn_buf,...

Ngày tải lên: 25/01/2014, 19:20

... (C off + (1 - α) (C on - C off )) + M U (C off + α (C on - C off )) d sa2 = K S (M S + M U ) + K U M S + C off (C on - C off ) + α (1 - α) (C on - C off ) d sa1 = K S (C on - C off ) + K U (C off ... = M S (1 - α) (C on - C off ) + M U α (C on - C off ) + C off (M S + M U ) h x1 = K S (M S + M U ) + C off (C on - C off ) + α (1 - α) (C on - C off ) h x0 = (C on - C off ) K S 30 Replacing s ... the damper But the amount of power required for controlling the damping level of a semiactive damper is much less than the amount of power required for the operation of an active suspension Semiactive...

Ngày tải lên: 07/03/2014, 11:20

... high degrees of chemical and dimensional control and allow for the formation of useful nanoparticulate systems with a wide variety of biological applications A combination of electrochemical methods ... of rod samples by facilitating the mass transport of ions and gasses through the pores of the membrane The modifications Multifunctional Nanorods for Biomedical Applications Fig FSEM images of ... Examples of Selective Functionalization of Multisegmented Nanowires for Use in Biomedical Applications and/or Self Assembly 2342 Pearce, Melanko and Salem Multifunctional Nanorods for Biomedical Applications...

Ngày tải lên: 20/03/2014, 13:05

... seen a significant maturation of MEMS for biomedical applications, as biomedical applications provide the perfect platform for integrating complex design and fabrication of articulation, recording ... Fundamentals of MEMS for biomedical applications 1 Microfabrication of polymers for bioMEMS P REZAI, W-I WU and P R SELVAGANAPATHY, McMaster University, Canada 1.1 1.2 1.3 1.4 1.5 Introduction Microfabrication ... Proceedings of the IEEE, 70(5), 420–457 © Woodhead Publishing Limited, 2012 Part I Fundamentals of MEMS for biomedical applications © Woodhead Publishing Limited, 2012 Microfabrication of polymers for...

Ngày tải lên: 28/04/2014, 11:29

... nanocrystals resulted in the formation of non-centrosymmetric nanostructures Preferential formation of trimers and higher oligomers was observed for ZnS and dimers or isolated particles for CdS and HgS nanocomposites ... utilisation of magnetic-fluorescent nanoprobes could revolutionise many aspects of modern medicine However, toxicity is of major concern when advocating nanoparticles for any biomedical use Unfortunately ... reasons for choosing silica as a coating for magnetic particles in the fabrication of fluorescentmagnetic nanocomposites First of all, the silica coating provides an effective barrier to quenching of...

Ngày tải lên: 21/06/2014, 22:20

... illuminations of the current and of the previous frames, respectively Although they are functions of (x, y) and not only of (t), we omit it in the notation of (5) for the sake of simplicity At ... algorithm for night driving assistance, but they tackle the problem of reducing the effect of glares (e.g., caused by the lights of an incoming car) rather than the general enhancement of the original ... on the rear mirror of a car The frame sizes are 125 × 86 for Sequence and 160 × 120 for Sequence 2, and the frame rate is 24 frame/s for both sequences The input dynamic range of the cameras is...

Ngày tải lên: 22/06/2014, 19:20

... Director, Institute of Biochemical Physics, Russian Academy of Sciences, Moscow and Dr Renat Zhdanov, PhD, DSc Professor of Biophysics Institute of Biochemical Physics, Russian Academy of Sciences, ... beneficially contribute to the field of biomedical nanotechnologies and nanotherapy Dr Sergei Varfolomeev, PhD, DSc Professor of Biochemistry Chair of Chemical Enzymology, Chemical Faculty M.V Lomonosov ... NANOSYSTEMS FOR BIOMEDICAL APPLICATIONS Nanomaterials and Nanosystems for Biomedical Applications Edited by M Reza Mozafari Monash University, Victoria, Australia A C.I.P Catalogue record for this...

Ngày tải lên: 27/06/2014, 10:20

Ngày tải lên: 03/07/2014, 21:41

... development of biofilm architecture Stage 4: maturation of biofilm architecture Stage 5: dispersion of single cells from the biofilm The bottom panels (a-e) show each of the five stages of development ... hydrogels Polymer hydrogels for biomedical applications can be of either natural, synthetic origin or a combination of these two types of material For example, alginate and chitosan are the two most ... attachment of cells to the surface Stage 2: production of EPS resulting in more firmly adhered “irreversible” attachment Stage 3: early development of biofilm architecture Stage 4: maturation of biofilm...

Ngày tải lên: 08/09/2015, 19:48

... planar GaN for 40 at V/III ratio of 30,000 – Sample C2, (b) Nanoporous GaN for 60 at V/III ratio of 55,000 – Sample B3, and (c) InGaN-treated nanoporous GaN for 40 at V/III ratio of 30,000, followed ... 0.559o) by performing XRD ω scans about the indicated InN crystal planes 131 xiv List of Symbols ΔG Free energy of formation ΔG* Activation energy of nucleation ΔGv Free energy of reaction ... used in the UV-assisted electrochemical etching of GaN to produce nanopores 34 Fig 2-6: (a) SEM image of hexagonal nanopores formed in GaN after UVassisted electrochemical etching with aqueous...

Ngày tải lên: 09/09/2015, 11:06