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Dielectric and Optical Study of Polymer Nematic Liquid Crystal Composite
Manohar, S.,Shukla, S.N.,Chandel, V.S.,Shukla, J.P.,Manohar, R. The Korean Institute of Electrical and Electronic 2013 Transactions on Electrical and Electronic Material Vol.14 No.3
The dielectric anisotropy and dispersion of the real and imaginary part of the permittivity of commercially important nematic mixture E-24 and its polymer composite were investigated in the frequency range from 1 kHz to 10 MHz, and temperature range $14^{\circ}C$ to $55^{\circ}C$. The percentage optical transmittance and density have also been measured for both the systems. The results have been explained by assuming molecular rotation about the long molecular axis, under a hindering nematic potential. The dielectric anisotropy ${\Delta}{\varepsilon}$ is positive, and the mean dielectric permittivity falls with rising temperature. ${\Delta}{\varepsilon}$ is also used to determine the order parameter with varying temperature.
Dielectric and Optical Study of Polymer Nematic Liquid Crystal Composite
S. MANOHAR,V. S. CHANDEL,S. N. SHUKLA,J. P. SHUKLA,R. MANOHAR 한국전기전자재료학회 2013 Transactions on Electrical and Electronic Material Vol.14 No.3
The dielectric anisotropy and dispersion of the real and imaginary part of the permittivity of commercially important nematic mixture E-24 and its polymer composite were investigated in the frequency range from 1 kHz to 10 MHz, and temperature range 14℃ to 55℃. The percentage optical transmittance and density have also been measured for both the systems. The results have been explained by assuming molecular rotation about the long molecular axis, under a hindering nematic potential. The dielectric anisotropy Δε is positive, and the mean dielectric permittivity falls with rising temperature. Δε is also used to determine the order parameter with varying temperature.
Manohar, Kuruva,Mittal, Bhagwant Rai,Bhattacharya, Anish,Gupta, Amod The Korea Society of Nuclear Medicine 2012 핵의학 분자영상 Vol.46 No.1
Metastases to orbit occur rarely but are the most common form of malignant orbital tumors. Usually the orbital metastases occur in disseminated disease. Very rarely orbital metastases can be the presenting feature of systemic malignancy. We report here a case with orbital metastases as the presenting feature of lung malignancy and describe the utility of FDG PET/CT as one-stop-shop imaging modality in this setting.
Amyloglucosidase Catalyzed Syntheses of Bakuchiol Glycosides in Supercritical Carbon Dioxide
Manohar, Balaraman,Divakar, Soundar,Sankar, Kadimi Udaya Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.8
Enzymatic syntheses of water soluble Bakuchiol glycosides were carried out in di-isopropyl ether organic media using amyloglucosidase from Rhizopus mold. The reactions were carried out under conventional reflux conditions and in supercritical $CO_2$ atmospheric conditions. Out of the eleven carbohydrate molecules employed for the reaction, D-glucose, D-ribose and D-arabinose gave glycosides in yields of 9.0% to 51.4% under conventional reflux conditions. Under supercritical $CO_2$ atmosphere (100 bar pressure at 50 ${^{\circ}C}$), bakuchiol formed glycosides with Dglucose, D-galactose, D-mannose, D-fructose, D-ribose, D-arabinose, D-sorbitol and D-mannitol in yields ranging from 9% to 46.6%. Out of the bakuchiol glycosides prepared, 6-O-(6-D-fructofruranosyl)bakuchiol showed the best antioxidant (1.4 mM) and ACE inhibitory activities (0.64 mM).
Amyloglucosidase Catalyzed Syntheses of Bakuchiol Glycosides in Supercritical Carbon Dioxide
Balaraman Manohar,Soundar Divakar,Kadimi Udaya Sankar 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.8
Enzymatic syntheses of water soluble Bakuchiol glycosides were carried out in di-isopropyl ether organic media using amyloglucosidase from Rhizopus mold. The reactions were carried out under conventional reflux conditions and in supercritical CO2 atmospheric conditions. Out of the eleven carbohydrate molecules employed for the reaction, D-glucose, D-ribose and D-arabinose gave glycosides in yields of 9.0% to 51.4% under conventional reflux conditions. Under supercritical CO2 atmosphere (100 bar pressure at 50 oC), bakuchiol formed glycosides with Dglucose, D-galactose, D-mannose, D-fructose, D-ribose, D-arabinose, D-sorbitol and D-mannitol in yields ranging from 9% to 46.6%. Out of the bakuchiol glycosides prepared, 6-O-(6-D-fructofruranosyl)bakuchiol showed the best antioxidant (1.4 mM) and ACE inhibitory activities (0.64 mM).
Royal Jelly Protein and Lipid Composition in Apis cerana indica F.
( Milind Manohar Shinkhede ),( Dnyaneshwar Bapuji Tembhare ) 한국잠사학회 2009 International Journal of Industrial Entomology Vol.18 No.2
The histological and transmission electron microscopic studies revealed the synthesis activity predominantly in the hypopharyngeal glands of the nurse bees. The biochemical analysis of both, the hypopharyngeal gland extract and royal jelly elucidated unequivocally the proteins and lipids as the major constituents. Further the SDS-PAGE of hypopharyngeal gland extract showed about 17 protein bands, perhaps 14.10, 20.00, 29.00 and 43.00 kDa predominantly while that of royal jelly revealed only two protein bands of 29.00 and 43.00 kDa molecular weight suggesting them as the major royal jelly proteins (MRJP). The lipid profile of royal jelly consists of triglycerides, cholesterol, HDL, LDL and VLDL.
A Comparative Study of Gas Sensing Properties of Au-loaded ZnO and Au@ZnO Core-shell Nanoparticles
Sanjit Manohar Majhi,Dung Van Dao,Hu-Jun Lee,유연태 한국센서학회 2018 센서학회지 Vol.27 No.2
Au@ZnO core-shell nanoparticles (NPs) were prepared by a simple method followed by heat-treatment for gas sensor applications. The advantage of the core-shell morphology was investigated by comparing the gas sensing performances of Au@ZnO core-shell NPs with pure ZnO NPs and different wt% of Au-loaded ZnO NPs. The crystal structures, shapes, sizes, and morphologies of all sensingmaterials were characterized by XRD, TEM, and HAADF-STEM. Au@ZnO core-shell NPs were nearly spherical in shape and Au NPswere encapsulated in the center with a 40–45 nm ZnO shell outside. The gas sensing operating temperature for Au@ZnO core-shellNPs was 300°C, whereas it was 350°C for pure ZnO NPs and Au-loaded ZnO NPs. The maximum response of Au@ZnO core-shell NPs to 1000 ppm CO at 300°C was 77.3, which was three-fold higher than that of 2 wt% Au-loaded ZnO NPs. Electronic and chemicaleffects were the primary reasons for the improved sensitivity of Au@ZnO core-shell NPs. It was confirmed that Au@ZnO core-shellNPs had better sensitivity and stability than Au-loaded ZnO NPs.
Vijaya Manohar,Bobby Echard,Nicholas Perricone,Cass Ingram,Mary Enig,Debasis Bagchi,Harry G. Preuss 한국식품영양과학회 2013 Journal of medicinal food Vol.16 No.6
Since monolaurin, a monoglyceride formed in the human body in small quantities, has proven effective both in vitro and in vivo against certain strains of Staphylococcus aureus, an important question arises whether consuming a substance high in lauric acid content, such as coconut oil could increase intrinsic monolaurin production to levels that would be successful in overcoming staphylococcal and other microbial invaders. Both a cup plate method and a microdilution broth culture system were employed to test bacteriostatic and bactericidal effects of the test agents in vitro. To test effectiveness in vivo, female C3H/he mice (10–12 per group) were orally administered sterile saline (regular control), vancomycin (positive control), aqueous monolaurin, or two varieties of coconut oil (refined, bleached, deodorized coconut oil and virgin coconut oil) for 1 week before bacterial challenge and 30 days after. A final group received both monolaurin and vancomycin. In contrast to monolaurin, the coconut oils did not show bactericidal activity in vitro. In vivo, the groups receiving vancomycin, monolaurin, or the combination showed some protection—50–70% survival, whereas the protection from the coconut oils were virtually the same as control—0–16% survival. Although we did not find that the two coconut oils are helpful to overcome S. aureus infections, we corroborated earlier studies showing the ability of monolaurin to do such.
Efficient bipolar membrane with protein interfacial layer for optimal water splitting
Murli Manohar,Geetanjali Shukla,Ravi P. Pandey,Vinod K. Shahi 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.47 No.-
Herein, we are reporting bipolar membranes (BPMs) for water splitting. BPMs are sandwiched structureof anion-exchange layer (AEL) and cation-exchange layer (CEL) with a protein (lysozyme (LYS) or bovineserum albumin (BSA) as interfacial layer (IL). CEL and AEL were prepared by controlled sulphonation orchloromethylation (without chloromethyl methyl ether). Presence of acidic and basic groups in the ILfacilitates the H+/OH transport and act as proton/hydroxide buffer. Further, water dissociation efficiencyof BPMs was also analysed by experimental results (I–V curves, chronopotentiometry, and electrodialy-sis). Data revealed high suitability of BPM-LYS for excellent catalytic activity and water dissociation. Theexperimental results (I–V) curves, chronopotentiometry, and electrodialysis) revealed high suitability ofBPM-LYS for excellent catalytic activity and water dissociation.