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排序方式: 共有126条查询结果,搜索用时 15 毫秒
1.
Gaikwad Aniruddha Chang Tammy Giera Brian Watkins Nicholas Mukherjee Saptarshi Pascall Andrew Stobbe David Rao Prahalada 《Journal of Intelligent Manufacturing》2022,33(7):2093-2117
Journal of Intelligent Manufacturing - In droplet-on-demand liquid metal jetting (DoD-LMJ) additive manufacturing, complex physical interactions govern the droplet characteristics, such as size,... 相似文献
2.
Nikita Tiwari Raksha Pandit Swapnil Gaikwad Aniket Gade Mahendra Rai 《IET nanobiotechnology / IET》2017,11(2):205
Aim: The authors report the biological synthesis of zinc oxide nanoparticles (ZnO‐NPs) from the petals extract of Rosa indica L. (rose). Its efficacy was evaluated against two dermatophytes: namely: Trichophyton mentagrophytes and Microsporum canis which cause onychomycosis. The activity of antibiotics against the tested dermatophytes was enhanced, when evaluated in combination with ZnO‐NPs. Methods and results: The synthesised ZnO‐NPs were preliminary detected by using ultraviolet UV visible spectroscopy, which showed specific absorbance. The ZnO‐NPs were further characterised by nanoparticle tracking analysis (NTA), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), X‐ray diffraction and Zetasizer. Moreover, nanoparticles containing nail paint (nanopaint) was formulated and its antifungal activity was also assessed against T. mentagrophytes and M. canis. ZnO‐NPs and formulated nanopaint containing ZnO‐NPs, both showed significant antifungal activity. The maximum activity was noted against M. canis and lesser against T. mentagrophytes. Minimum inhibitory concentration of ZnO‐NPs was also determined against the dermatophytes causing onychomycosis infection. Conclusion: ZnO‐NPs can be utilised as a potential antifungal agent for the treatment of onychomycosis after more experimental trials.Inspec keywords: diseases, zinc compounds, nanoparticles, nanofabrication, antibacterial activity, microorganisms, nanomedicine, ultraviolet spectra, visible spectra, Fourier transform infrared spectra, transmission electron microscopy, X‐ray diffraction, biomedical materials, patient treatmentOther keywords: zinc oxide nanoparticle biosynthesis, Rosa indica L petals extract, nail paint, antifungal activity evaluation, dermatophyte, Trichophyton mentagrophytes, Microsporum canis, antibiotics activity, ultraviolet‐visible spectroscopy, nanoparticle tracking analysis, Fourier transform infrared spectroscopy, transmission electron microscopy, X‐ray diffraction, zetasizer, antifungal agent, onychomycosis treatment 相似文献
3.
Ashwin Gaikwad 《Chemical Engineering Communications》2018,205(1):47-81
As the biofuel industry is heavily depend on technological advancement to remain competent, creation of new process techniques becomes inevitable to replace the existing under-performed operations. Mixing in the reactor requires enormous amount of energy to achieve required homogeneity. Reduction in the energy consumption and ultimately the cost of the product is possible by devising smart mixing strategies. In this review, interactions of mixing and reaction kinetics of enzymatic hydrolysis, fermentation, and cellulosic depolymerization in ionic solvents are discussed. When the processes are operated under various mixing conditions, changes in the reaction kinetics and dynamics of the processes occur. Therefore, analyzing the mixing effects at various levels (micro to macro) is crucial to decide best operating mixing conditions that drive the reaction kinetics toward the increased product yield. The review is helpful to identify a suitable mixing strategy that maximizes the production of biofuels—ethanol, 5-hydroxymethylfurfural, etc. 相似文献
4.
5.
5d-metal mononitrides and monoborides viz. X-N and X-B (X = La, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg) are studied using density
functional method based B3LYP functional with LANL2DZ and SDD basis set. The lowest spin state, electron affinities, ionization
potentials and binding energies for mononitrides and monoborides are obtained. The electronic state and electronic configuration
of mononitrides and monoborides are discussed. Orbitals involved in bond formation are identified. The properties of mononitrides
and monoborides are compared. It is found that 5d-metal atoms form stronger bond with nitrogen atom than the boron atom. The range of binding energy, electron affinity and
ionization potential is wider for mononitrides than that for monoborides. The properties of 5d-metal mononitrides and 3d-metal mononitrides are also compared. The binding energies for the former are lower than those for the latter. 相似文献
6.
A. Vadivel Murugan A. B. Gaikwad V. Samuel V. Ravi 《Bulletin of Materials Science》2006,29(3):221-223
An aqueous mixture of ammonium oxalate and ammonium hydroxide was used to coprecipitate barium and strontium ions as oxalates
and niobium ions as hydroxide under basic conditions. This precursor on calcining at 750°C yielded Sr0.5Ba0.5Nb2O6 phase. This is a much lower temperature than that prepared by traditional solid state method (1000°C) as reported for the
formation of Sr0.5Ba0.5Nb206 (SBN). Transmission electron microscopic (TEM) investigations revealed that the average particle size was 80 nm for the calcined
powders. The room temperature dielectric constant at 1 kHz was found to be 1100. The ferroelectric hysteresis loop parameters
of these samples were also studied. 相似文献
7.
S. A. Gaikwad E. P. Samuel D. S. Patil D. K. Gautam 《Bulletin of Materials Science》2007,30(3):255-261
Temperature dependent analysis to achieve better performance by reducing threshold current requirements and field intensity
has been carried out for GaN/AlGaN heterostructure lasers. The mirror loss in the GaN cavity has been obtained as a function
of temperature and cavity length. The quantum efficiency has been deduced for different values of cavity length. Dependence
of recombination rate on band gap and temperature has been investigated. Threshold current density has been deduced for GaN
lasers and effect of temperature on it has been investigated. The near field intensity analysis has been carried out at different
temperatures for 10% aluminum mole fraction in GaN/AlGaN heterostructure lasers. Furthermore, the effective index and FWHM
of near field has been investigated as a function of temperature. It has been deduced from our analysis that temperature has
a dominant effect on the threshold conditions and near field intensity in the wide band gap GaN based lasers. 相似文献
8.
Manjunatha Pattabi S. C. Gurumurthy Ganesh Sanjeev A. B. Gaikwad 《Journal of Materials Science: Materials in Electronics》2011,22(8):1095-1100
Results of the investigations carried out on the electrical behavior of silver particulate films deposited on electron beam
irradiated polystyrene (PS) coated substrates held at a temperature of 455 K in a vacuum of 8 × 10−6 torr at a constant deposition rate of 0.4 nm/s are reported. It is known that when metals are evaporated on to softened polymer
substrates, subsurface particulate structures are formed whose morphology is dependent on deposition parameters. Further,
it was shown that the morphology is dependent on polymer-metal interaction. The present work demonstrates that the polymer-metal
interaction can be brought about in inert polymers like PS by electron irradiation. The results indicate that the films deposited
on PS irradiated to a dose of 20 and 25 kGy gives rise to smaller clusters with smaller inter-cluster separation, better suited
for sensor applications. The induced polymer-metal interaction is attributed to the creation of free radicals due to the 8 MeV
electron irradiation. 相似文献
9.
10.
Transient analysis following tripping of a primary circulating pump for 500-MWe PHWR power plant 总被引:1,自引:0,他引:1
Gaikwad A.J. Kumar R. Vhora S.F. Chakraborty G. Raj V.V. 《IEEE transactions on nuclear science》2003,50(2):288-293
The 500-MWe Indian pressurized heavy water (PHWR) incorporates many new features as compared to the earlier 220-MWe PHWRs. To evaluate the new design features like primary heat transport (PHT) system configuration with two loops, four primary circulating pumps (PCPs) and four passes through core, addition of a pressurizer (surge tank) in the PHT system along with a feed/bleed system and their safety-related implications, simulation model development and transient analyses are necessary. To mitigate the swell and shrinkage in the PHT system and to avoid high/low PHT system pressure during transients, a 30 m/sup 3/ pressurizer along with feed/bleed system is also included in the PHT pressure control system for the 500-MWe PHWR. At the same time, a reactor stepback is also actuated during the one PCP trip transient after tripping the corresponding (same side) PCP in the other loop. The corresponding PCP in the healthy loop is tripped to avoid unsymmetrical flow and pressure distribution in the two identical loops. A detailed transient analysis is required to study the individual contributions of various systems and provisions such as pressuriser, feed/bleed, and reactor step/set back in mitigating the consequences of the malfunction. 相似文献