3D Face Recognition Based on Depth and Intensity Gabor Features using Symbolic PCA and AdaBoost

P. S. Hiremath,Manjunatha Hiremath 보안공학연구지원센터(IJSIP) 2013 International Journal of Signal Processing, Image Vol.6 No.5

TORSIONAL MHD OSCILLATIONS OF THE SUN

HIREMATH K. M.,GOKHALE M. H. The Korean Astronomical Society 1996 Journal of The Korean Astronomical Society Vol.29 No.suppl1

Assuming that the solar activity and the solar cycle phenomena may be manifestations of global torsional MHD oscillations, we compute the Alfven wave travel times along the field lines in the five models of magnetic field described in the following text. For all these models, we compute standard deviation and it's ratio to mean Alfvenic wave travel times. The last two models yield the smallest relative bandwidth for the frequencies of the MHD oscillations. However, the last model is the only admissible one which can sustain global Alfvenic oscillations with well defined frequency for the fundamental mode

Sacrificial templating method for fabrication of MgO-Al₂O₃@C spheres and their application to CO₂ capture

Hiremath, Vishwanath,Trivino, Monica L.T.,Shavi, Raghavendra,Gebresillase, Mahlet N.,Seo, Jeong Gil North-Holland 2018 Materials letters Vol.211 No.-

<P><B>Abstract</B></P> <P>MgO-Al<SUB>2</SUB>O<SUB>3</SUB>@C spheres were synthesized via a simple sacrificial templating method using resorcinol and formaldehyde. The SEM studies revealed the presence of interconnected nanosized particles within the nanoscale region. The improved CO<SUB>2</SUB> sorption performance is due to the unique Mg-Al-C network which provides a favorable surface structure for the generation of unsaturated O<SUP>2−</SUP>. Among the samples tested, MgAl@C-1:2 shows the highest MgO carbonation conversion corresponding to 60% at 40°C with improved cyclic stability for 10 cycles.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Resorcinol and formaldehyde used as soft templates and C-sources. </LI> <LI> The developed MgAl@C spheres show improved CO<SUB>2</SUB> sorption. </LI> <LI> MgAl@C shows 60% carbonation conversion at 40°C. </LI> <LI> The sorbents possess high thermal stability for up to 10 cycles. </LI> </UL> </P>

Effect of Competing Foodborne Pathogens on the Selectivity and Binding Kinetics of a Lytic Phage for Methicillin-Resistant <i>Staphylococcus aureus</i> Detection

Hiremath, Nitilaksha,Chin, Bryan A.,Park, Mi-Kyung Electrochemical Society 2017 Journal of the Electrochemical Society Vol.164 No.4

<P>The selectivity and binding kinetics of a lytic phage as a new bio-recognition element were compared and evaluated. The selectivity was studied by exposing the magnetoelastic (ME) biosensor to individual cultures of Escherichia coli O157:H7 (EO), Listeria monocytogenes (LM), Salmonella Typhimurium (ST), Vibrio parahaemolyticus, Yersinia enterocolitica, and methicillin-resistant Staphylococcus aureus (MRSA). A dose response of the ME biosensor obtained from serially increasing concentrations of MRSA was then compared with those obtained from MRSA in a mixture of other competing bacteria. The number of MRSA bound on the measurement sensor was 12,206 +/- 750 cells/sensor, which was significantly greater than the number of other competing bacteria bound on the sensor (P < 0.001). The dose responses of sensors to increasing concentration of MRSA and MRSA in a mixture of other competing bacteria were similar, indicating that the resonant frequency shifts of the ME sensor were dependent on the concentration of MRSA. The binding valency and dissociation constant (cfu/mL) of the lytic phage with MRSA, MRSA + LM, MRSA + LM + EO, and MRSA + LM + EO + ST were calculated as 3.3 +/- 0.2 and 62.5 +/- 11.0, 3.7 +/- 0.2 and 56.2 +/- 11.8, 3.4 +/- 0.2 and 59.4 +/- 10.5, and 3.7 +/- 0.2 and 56.0 +/- 10.7, respectively. This study demonstrated that lytic phages were able to bind with MRSA specifically and selectively even in the presence of other competing bacteria. (C) 2017 The Electrochemical Society. All rights reserved.</P>

Controlled oxidation state of Ti in MgO-TiO₂ composite for CO₂ capture

Hiremath, V.,Shavi, R.,Seo, J.G. Elsevier 2017 Chemical engineering journal Vol.308 No.-

Mesoporous MgO-TiO<SUB>2</SUB> sorbents denoted as (xMgO-TiO<SUB>2</SUB>) with different Mg/Ti molar ratios were synthesized by single step evaporation-induced self-assemble (EISA) method for its application to CO<SUB>2</SUB> capture. The effect of Mg/Ti molar ratio of mesoporous MgO-TiO<SUB>2</SUB> sorbents on their physicochemical properties, oxidation state of titanium, and CO<SUB>2</SUB> adsorption performance was investigated. The phase of xMgO-TiO<SUB>2</SUB> was transformed in the sequence of MgTiO<SUB>3</SUB> (Mg/Ti=1.0 and 2.0)→MgO-MgTi<SUB>2</SUB>O<SUB>4</SUB> (Mg/Ti=3.0 and 4.0)→MgO-Mg<SUB>2</SUB>TiO<SUB>4</SUB> (Mg/Ti=5.0). However, with the increasing Mg/Ti molar ratio, CO<SUB>2</SUB> adsorption performance increased in the order of MgTiO<SUB>3</SUB><MgO-MgTi<SUB>2</SUB>O<SUB>4</SUB><MgO-Mg<SUB>2</SUB>TiO<SUB>4</SUB>. Among the sorbents tested 3.0MgO-TiO<SUB>2</SUB> showed the best CO<SUB>2</SUB> adsorption performance corresponding to ~1mmol/g (4.39wt.%). It was observed that the MgTi<SUB>2</SUB>O<SUB>4</SUB> (Ti<SUP>3+</SUP>-O-Mg<SUP>2+</SUP>) could create highly basic sites compared to MgTiO<SUB>3</SUB> and Mg<SUB>2</SUB>TiO<SUB>4</SUB>. In the process of CO<SUB>2</SUB> adsorption, high surface area (111.4m<SUP>2</SUP>/g), large pore volume (0.45cm<SUP>3</SUP>/g) as well as appropriate basic sites of Mg-O-Ti make it a plausible candidate for CO<SUB>2</SUB> adsorption.

Self-assembled Mn₃O₄ nano-clusters over carbon nanotube threads with enhanced supercapacitor performance

Hiremath, Vishwanath,Cho, Min,Seo, Jeong Gil The Royal Society of Chemistry 2018 NEW JOURNAL OF CHEMISTRY Vol.42 No.24

<P>A well defined carbon nanotube threaded trimanganese tetroxide (Mn3O4@CNT) nanocomposite has been fabricated through a facile hydrothermal route using acetylacetone as a chelating agent. The Mn3O4 nano-clusters are formed by the self-assembly of numerous Mn3O4 nanostructures and the CNTs are uniformly decorated on the body of Mn3O4 nano-clusters to improve the conductivity of the composite. The porous and well-designed architecture of the Mn3O4@CNT composite could be expected to offer more electroactive sites for pseudocapacitive reactions and shorten the transportation path for the electrolyte ions. Due to these properties as well as the synergistic effect of CNTs and Mn3O4 nano-clusters, the as-synthesized Mn3O4@CNT composite, which was primarily used as a pseudocapacitive material, showed a higher specific capacitance of 81.9 F g<SUP>−1</SUP> at a current density of 0.6 A g<SUP>−1</SUP> with good cycling stability. The delivered capacitance of the composite is comparatively higher than that of the pristine Mn3O4 (53.5 F g<SUP>−1</SUP>). The facile preparation approach to balance the higher electrochemical properties of the transition metal oxides with highly conductive carbon nanotubes provides the potential for the development of novel nanocomposites for energy storage devices.</P>

Highly reversible CO₂ capture using amino acid functionalized ionic liquids immobilized on mesoporous silica

Hiremath, Vishwanath,Jadhav, Arvind H.,Lee, Hanyeong,Kwon, Soonchul,Seo, Jeong Gil Elsevier 2016 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.287 No.-

<P><B>Abstract</B></P> <P>Amino acid functionalized 1-methyl-3-ethyl-imidazolium based ionic liquid (IL) supported on ordered mesoporous silica (OMS-IL (AA)) were prepared via grafting method and were applied as solid sorbent for CO<SUB>2</SUB> adsorption–desorption. Four different kinds of amino acids (AA), including lysine (Lys), glycine (Gly), alanine (Ala), and proline (Pro) were selected in order to prepare different OMS-IL (AA) adsorbents. The developed solid adsorbents were characterized by using <SUP>29</SUP>Si-NMR, FT-IR, TGA, BET, SEM, TEM, and elemental analysis. The CO<SUB>2</SUB> adsorption–desorption studies were carried out using the thermogravimetric method with temperature swing assistance of the adsorbed CO<SUB>2</SUB>. Evaluation of CO<SUB>2</SUB> adsorption nature revealed that the adsorbents show fast kinetics, moderate chemisorption and easy desorption. Among the synthesized OMS-IL (AA), OMS-IL (Lys) showed the best CO<SUB>2</SUB> adsorptive performance corresponding to 0.61mmol/g at 25°C. The energy requirements for activation, adsorption and desorption are estimated by using different methods to meet its energy criteria. Further, the approach has been made to discuss the activity of selected amino acids, their effective loading, kinetics, and adsorption capacities in detail. DFT studies reveals that the energy required for CO<SUB>2</SUB> adsorption on IL (Lys) is high enough for CO<SUB>2</SUB> uptake (=−0.98eV). According to experiment and DFT calculations, a worthy correlation is identified between CO<SUB>2</SUB> adsorption capacity, adsorption energy, and the orbital localization, which determines the basic role of ILs over support to adsorbed CO<SUB>2</SUB> efficiently.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Amino acid functionalized ionic liquids immobilized on silica were synthesized. </LI> <LI> Moderate binding energy facilitates fast and reversible CO<SUB>2</SUB> adsorption–desorption. </LI> <LI> CO<SUB>2</SUB> adsorption capacity increased with increasing adsorption energy of CO<SUB>2</SUB>. </LI> <LI> Lysine with highest degree of band gap exhibited the best CO<SUB>2</SUB> adsorption capacity. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Evaluation of Bacopa monniera for its Synergistic Activity with Rivastigmine in Reversing Aluminum-Induced Memory Loss and Learning Deficit in Rats

Agadi Hiremath Thippeswamy,Mohamed Rafiq,Gollapalle Lakshminarayana shastry Viswa,Kethaganahalli J. Kavya,Suryakanth D. Anturlikar,Pralhad S. Patki 사단법인약침학회 2013 Journal of Acupuncture & Meridian Studies Vol.6 No.4

The objective of this study was to evaluate the synergistic activity of Bacopa monniera with Rivastigmine against aluminum-chloride (AlCl3)-induced cognitive impairment in rats. Adult male Wistar rats were divided into ten groups (n = 10) and subjected to their assigned treatments for 42 days. On the 20th day of the respective drug treatments, all the animals were trained in the Morris water maze (retention latency) and the elevated plus maze (transfer latency). After the initial training, the retention latency (RL) and the transfer latency (TL) were evaluated on the 21st and the 42nd days of the study. Chronic administration of AlCl3 caused significant memory impairment associated with increased RL in the Morris water maze task and increased TL in the elevated plus maze test. Interestingly, animals treated with oral administration of B. monniera (100 and 200 mg/kg), Rivastigmine (5 mg/kg) or a combination of B. monniera (100 mg/kg) with Rivastigmine (5 mg/kg) showed significant protection against AlCl3-induced memory impairment compared to animal treated with AlCl3 per se. Additionally, the neuroprotective effect of B. monniera (100 and 200 mg/kg) was significantly improved when supplemented with Rivastigmine (5 mg/kg). These findings suggest that treatment with a combination of B. monniera with Rivastigmine may be highly beneficial compared to their per-se treatment.

Fine-tuning the phase composition of 1D TiO₂ nanofiber reinforced TiO₂ aerogels

( Vishwanath Hiremath ),서정길 한국공업화학회 2022 한국공업화학회 연구논문 초록집 Vol.2022 No.1

Experimental analysis of the thermal properties of fused quartz-reinforced Al-6061alloy matrix composites using RSM approach

Anupama Hiremath,Ritesh Bhat 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.3

This study investigates the thermal property of fused quartz-reinforced aluminum 6061 alloy metal matrix composites for three different chill material conditions. Temperature and reinforcement composition were the independent variables used in experimental analysis. Thermal expansion and conductivity were considered the dependent variables. Central composite experimental design was used in this work. Analysis suggested that temperature, which contributed 55.35 % and 61.60 % variances in thermal expansion and conductivity, is a significant factor, respectively. Novel analytical models, which have a high degree of "goodness of fit" and prediction, are also developed and presented to determine thermal conductivity and expansion.