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SUPERCRITICAL FLUID


Posted by: seminar surveyer
Created at: Wednesday 22nd of December 2010 01:03:02 AM
Last Edited Or Replied at :Wednesday 04th of May 2011 07:18:50 PM
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INDEX
Introduction
Properties Of SCF
Applications
Applications ------Extraction
Applications ------Nano Particle Synthesis
Natural Occurrence
Conclusion


NATURAL OCCURRENCE
Submarine -Volcanoes: Steam & gases which are releases from the volcanoes are in high pressure (for sea depth) & temperature.


Planetary –atmosphere: Many planets atmosphere is Supercritical environment for some fluid. Like –Venus, Jupiter etc.
INDEX
Introduction
Properties Of SCF
Applications
Applications ------Extraction
Applications ------Nano Particle Synthesis
Natural Occurre..................[:=> Show Contents <=:]



thesis topics for control and instrumentation


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Created at: Monday 29th of October 2012 09:20:45 AM
Last Edited Or Replied at :Tuesday 30th of October 2012 05:27:05 AM
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Goodafternoon.I am Reginald by name and doing by master program in Control Engineering.Pls i am in need of a project topic in instrumentation and co..................[:=> Show Contents <=:]



nanoparticle synthesis methods ppt


Posted by:
Created at: Monday 29th of October 2012 09:09:21 AM
Last Edited Or Replied at :Monday 29th of October 2012 09:09:21 AM
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i actually ..................[:=> Show Contents <=:]



biological synthesis of copper nanoparticles using plant extract


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Created at: Wednesday 03rd of October 2012 06:29:57 AM
Last Edited Or Replied at :Friday 26th of July 2013 08:16:09 AM
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biological synthesis of plant based copper nanoparticles
BIOLOGICAL SYNTHESIS OF COPPER NANOPARTICLES[..................[:=> Show Contents <=:]



PRODUCTION OF BIOGENIC SILVER NANOPARTICLES USING BOSWELLIA OVALIFOLIOLATA STEM


Posted by: seminar class
Created at: Friday 06th of May 2011 11:11:32 PM
Last Edited Or Replied at :Friday 06th of May 2011 11:11:32 PM
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s and discussion
Reduction of silver ion into silver particles during exposure to the plant extracts could be followed by color change. Silver nanoparticle exhibit dark yellowish – brown color in aqueous solution due to the surface Plasmon resonance phenomenon (Fig.1). The result obtained in this investigation is very interesting in terms of identification of potential forest plant for synthesizing the silver nanoparticles. UV-Vis spectrograph of the colloidal solution of silver nanoparticles has been recorded as a function of time. Absorption spectra of silver nanoparticles formed in t..................[:=> Show Contents <=:]



Super critical Fluids and its Applications


Posted by: seminar class
Created at: Tuesday 19th of April 2011 12:16:12 AM
Last Edited Or Replied at :Tuesday 19th of April 2011 12:16:12 AM
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ess of reducing the average diameter of a solid material's particles. Usually, the term micronization is used when the particles that are produced are only a few micrometres in diameter.
• However, modern applications (usually in the pharmaceutical industry) require average particle diameters of the nanometer scale.
• Modern methods using supercritical fluids in the micronization process are
1. RESS process (Rapid Expansion of Supercritical Solutions)
2. SAS method (Supercritical Anti-Solvent)
3. PGSS method (Particles from Gas Saturated Solutions).
RESS METHOD
• The SCF..................[:=> Show Contents <=:]



Nano-Particulate Technology Synthesis


Posted by: seminar class
Created at: Friday 04th of March 2011 12:49:58 AM
Last Edited Or Replied at :Friday 04th of March 2011 12:49:58 AM
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y small particles
Sonochemical Nano-Synthesis: Examples
S-2, Se-2, Te-2
used in non-linear optic detectors, photorefractive devices, photovoltaic solar cells, optical storage media
Gold, Co, Fe, Pg, Ni, Au/Pd, Fe/Co
Nanophased oxides (titania, silica, ZnO, ZrO2, MnOx
More uniform dispersion, higher surface area, better thermal stability, phase purity of nanocrystalline titania reported
MgO coating on LiMn2O4
Magnetic Fe2O3 particles embedded in MgB2 bulk
Nanotubes of C, hydrocarbon, TiO2, MeTe2
Nanorods of Bi2S3, Sb2S3, Eu2O3, WS2, WO2, CdS, ZnS, PbS, Fe3O4
Nanowires of Se
Sono-P..................[:=> Show Contents <=:]



SUPERCRITICAL FLUID


Posted by: seminar surveyer
Created at: Wednesday 22nd of December 2010 01:03:02 AM
Last Edited Or Replied at :Wednesday 04th of May 2011 07:18:50 PM
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e extracted at relatively low temp.
Uses:
IT is largely used in Food & Flavouring industry.
This method is used for Decaffenication of tea & coffee.
Extraction of essential oils, aroma materials from spices etc.

INDEX
Introduction
Properties Of SCF
Applications
Applications ------Extraction
Applications----- Nano Particle Synthesis
Natural Occurrence
Conclusion


APPLICATIONS ---- NANO-PARTICLE SYNTHESIS
Supercritical Fluid Precipitation technology produces particles with Nano-dimension.
This technique is largely used in Pharmaceutical industry
INDEX
Introd..................[:=> Show Contents <=:]



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