12 research outputs found
ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΎΡΠΌΠΎΠ²Π°Π½ΠΈΡ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡ Π½Π΅ΠΉΠ»ΠΎΠ½Π° 6, 12 ΠΈ ΠΊΠ»ΠΎΠΈΠ·ΠΈΡΠ° 30B Π΄Π»Ρ ΡΡΠΎΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ
In this study, nylon-nanoclay fibers were prepared by electrospinning. The electrospun membranes were characterized by fourier transform infra red spectroscopy (FTIR), electron microscopy, X-ray diffraction studies (XRD), contact angle and differential scanning calorimetry (DSC) analyses. The incorporation of nanoclay (Cloisite 30B) to the electrospun membrane which was confirmed by transmission electron microscopy (TEM) showed improvements in the overall properties of the membrane. Antimicrobial studies carried out using Enterococcus faecalis and Candida albicans showed that antimicrobial activity of the membrane with higher clay loading was comparable to that of commercially available dental antiseptic, even though lower clay concentrations did not show antimicrobial effects. The incremental addition of the Cloisite 30B resulted in significant increase in the antimicrobial activity and hydrophobicityΠ ΡΠ°Π±ΠΎΡΠ΅ Π±ΡΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΎΡΠΌΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π²ΠΎΠ»ΠΎΠΊΠ½Π° ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ° Π½Π΅ΠΉΠ»ΠΎΠ½Π° ΠΈ Π½Π°Π½ΠΎΠ³Π»ΠΈΠ½Ρ (ΠΊΠ»ΠΎΠΈΠ·ΠΈΡ 30B). ΠΠ΅ΠΌΠ±ΡΠ°Π½Ρ Π±ΡΠ»ΠΈ ΠΎΡ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΠΎΠ²Π°Π½Ρ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΠ-ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ, ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΡΡΡΠΊΡΡΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°, Π°Π½Π°Π»ΠΈΠ·Π° ΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΡΡ
ΡΠ³Π»ΠΎΠ² ΠΈ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ΅ΠΉ ΠΊΠ°Π»ΠΎΡΠΈΠΌΠ΅ΡΡΠΈΠΈ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π²ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π½Π°Π½ΠΎΠ³Π»ΠΈΠ½Ρ Π² ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Ρ, ΠΊΠΎΡΠΎΡΠΎΠ΅ Π±ΡΠ»ΠΎ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΎ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΡΠΎΡΠ²Π΅ΡΠΈΠ²Π°ΡΡΠ΅ΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ, ΠΏΡΠΈΠ²Π΅Π»ΠΎ ΠΊ ΡΠ»ΡΡΡΠ΅Π½ΠΈΡ ΡΠ²ΠΎΠΉΡΡΠ² ΠΌΠ΅ΠΌΠ±ΡΠ°Π½. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠ΅ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Enterococcus faecalis ΠΈ Candida albicans, ΡΡΡΠ°Π½ΠΎΠ²ΠΈΠ»ΠΈ Π°Π½ΡΠΈΠΌΠΈΠΊΡΠΎΠ±Π½ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½ Ρ Π²ΡΡΠΎΠΊΠΈΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π³Π»ΠΈΠ½Ρ, ΡΠΎΠΏΠΎΡΡΠ°Π²ΠΈΠΌΡΡ Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΈΠΌΠ΅ΡΡΠΈΡ
ΡΡ Π² ΠΏΡΠΎΠ΄Π°ΠΆΠ΅ Π°Π½ΡΠΈΡΠ΅ΠΏΡΠΈΠΊΠΎΠ², ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΡΡ
Π² ΡΡΠΎΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ. Π ΡΠΎ ΠΆΠ΅ Π²ΡΠ΅ΠΌΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Ρ Ρ Π½ΠΈΠ·ΠΊΠΈΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π³Π»ΠΈΠ½Ρ Π½Π΅ ΠΏΡΠΎΡΠ²Π»ΡΠ»ΠΈ Π°Π½ΡΠΈΠΌΠΈΠΊΡΠΎΠ±Π½ΡΡ
ΡΠ²ΠΎΠΉΡΡΠ². Π£Π²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΠΊΠ»ΠΎΠΈΠ·ΠΈΡΠ° 30B ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΠ»ΠΎ ΠΊ ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΌΡ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈ Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΠΌΠ΅ΠΌΠ±ΡΠ°
Thermo- Optic and Nonlinear-Optical studies on CdSe Quantum Dots for Photonic Applications
In general, linear- optic, thermo- optic and nonlinear- optical studies
on CdSe QDs based nano
uids and their special applications in solar
cells and random lasers have been studied in this thesis. Photo acous-
tic and thermal lens studies are the two characterization methods used
for thermo- optic studies whereas Z- scan method is used for nonlinear-
optical charecterization. In all these cases we have selected CdSe QDs
based nano
uid as potential photonic material and studied the e ect of
metal NPs on its properties.
Linear optical studies on these materials have been done using vari-
ous characterization methods and photo induced studies is one of them.
Thermal lens studies on these materials give information about heat
transport properties of these materials and their suitability for applica-
tions such as coolant and insulators. Photo acoustic studies shows the
e ect of light on the absorption energy levels of the materials. We have
also observed that these materials can be used as optical limiters in the
eld of nonlinear optics. Special applications of these materials have
been studied in the eld of solar cell such as QDSSCs, where CdSe QDs
act as the sensitizing materials for light harvesting. Random lasers have
many applications in the eld of laser technology, in which CdSe QDs
act as scattering media for the gain.Cochin University of Science & Technolog
A single-center experience of post-transplant lymphomas involving the central nervous system with a review of current literature
ΠΠΎΠ»ΡΡΠ΅Π½Π½ΡΠ΅ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΎΡΠΌΠΎΠ²Π°Π½ΠΈΡ Π½Π°Π½ΠΎΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡ Π½Π΅ΠΉΠ»ΠΎΠ½Π° 6, 12 ΠΈ ΠΊΠ»ΠΎΠΈΠ·ΠΈΡΠ° 30B Π΄Π»Ρ ΡΡΠΎΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ
In this study, nylon-nanoclay fibers were prepared by electrospinning. The electrospun membranes were characterized by fourier transform infra red spectroscopy (FTIR), electron microscopy, X-ray diffraction studies (XRD), contact angle and differential scanning calorimetry (DSC) analyses. The incorporation of nanoclay (Cloisite 30B) to the electrospun membrane which was confirmed by transmission electron microscopy (TEM) showed improvements in the overall properties of the membrane. Antimicrobial studies carried out using Enterococcus faecalis and Candida albicans showed that antimicrobial activity of the membrane with higher clay loading was comparable to that of commercially available dental antiseptic, even though lower clay concentrations did not show antimicrobial effects. The incremental addition of the Cloisite 30B resulted in significant increase in the antimicrobial activity and hydrophobicityΠ ΡΠ°Π±ΠΎΡΠ΅ Π±ΡΠ»ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΎΡΠΌΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½Ρ Π²ΠΎΠ»ΠΎΠΊΠ½Π° ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠ° Π½Π΅ΠΉΠ»ΠΎΠ½Π° ΠΈ Π½Π°Π½ΠΎΠ³Π»ΠΈΠ½Ρ (ΠΊΠ»ΠΎΠΈΠ·ΠΈΡ 30B). ΠΠ΅ΠΌΠ±ΡΠ°Π½Ρ Π±ΡΠ»ΠΈ ΠΎΡ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΠ·ΠΎΠ²Π°Π½Ρ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΠ-ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ, ΡΠ΅Π½ΡΠ³Π΅Π½ΠΎΡΡΡΡΠΊΡΡΡΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π°, Π°Π½Π°Π»ΠΈΠ·Π° ΠΊΠΎΠ½ΡΠ°ΠΊΡΠ½ΡΡ
ΡΠ³Π»ΠΎΠ² ΠΈ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΠΊΠ°Π½ΠΈΡΡΡΡΠ΅ΠΉ ΠΊΠ°Π»ΠΎΡΠΈΠΌΠ΅ΡΡΠΈΠΈ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ, ΡΡΠΎ Π²ΠΊΠ»ΡΡΠ΅Π½ΠΈΠ΅ Π½Π°Π½ΠΎΠ³Π»ΠΈΠ½Ρ Π² ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Ρ, ΠΊΠΎΡΠΎΡΠΎΠ΅ Π±ΡΠ»ΠΎ ΠΏΠΎΠ΄ΡΠ²Π΅ΡΠΆΠ΄Π΅Π½ΠΎ Ρ ΠΏΠΎΠΌΠΎΡΡΡ ΠΏΡΠΎΡΠ²Π΅ΡΠΈΠ²Π°ΡΡΠ΅ΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π½ΠΎΠΉ ΠΌΠΈΠΊΡΠΎΡΠΊΠΎΠΏΠΈΠΈ, ΠΏΡΠΈΠ²Π΅Π»ΠΎ ΠΊ ΡΠ»ΡΡΡΠ΅Π½ΠΈΡ ΡΠ²ΠΎΠΉΡΡΠ² ΠΌΠ΅ΠΌΠ±ΡΠ°Π½. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ, Π²ΡΠΏΠΎΠ»Π½Π΅Π½Π½ΡΠ΅ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Enterococcus faecalis ΠΈ Candida albicans, ΡΡΡΠ°Π½ΠΎΠ²ΠΈΠ»ΠΈ Π°Π½ΡΠΈΠΌΠΈΠΊΡΠΎΠ±Π½ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½ Ρ Π²ΡΡΠΎΠΊΠΈΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π³Π»ΠΈΠ½Ρ, ΡΠΎΠΏΠΎΡΡΠ°Π²ΠΈΠΌΡΡ Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡΡ ΠΈΠΌΠ΅ΡΡΠΈΡ
ΡΡ Π² ΠΏΡΠΎΠ΄Π°ΠΆΠ΅ Π°Π½ΡΠΈΡΠ΅ΠΏΡΠΈΠΊΠΎΠ², ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌΡΡ
Π² ΡΡΠΎΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΠΈ. Π ΡΠΎ ΠΆΠ΅ Π²ΡΠ΅ΠΌΡ ΠΌΠ΅ΠΌΠ±ΡΠ°Π½Ρ Ρ Π½ΠΈΠ·ΠΊΠΈΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ Π³Π»ΠΈΠ½Ρ Π½Π΅ ΠΏΡΠΎΡΠ²Π»ΡΠ»ΠΈ Π°Π½ΡΠΈΠΌΠΈΠΊΡΠΎΠ±Π½ΡΡ
ΡΠ²ΠΎΠΉΡΡΠ². Π£Π²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠ΅ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΡ ΠΊΠ»ΠΎΠΈΠ·ΠΈΡΠ° 30B ΠΏΡΠΈΠ²ΠΎΠ΄ΠΈΠ»ΠΎ ΠΊ ΡΡΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΌΡ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΡ Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΈ Π³ΠΈΠ΄ΡΠΎΡΠΎΠ±Π½ΠΎΡΡΠΈ ΠΌΠ΅ΠΌΠ±ΡΠ°