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551.
The present research focuses on examining the thermic response of living tissue in the form of a triple-layered cylindrical structure when subjected to laser light and the compatibility analysis of non-Fourier heat transfer with thermodynamics second law. The temperature field in the triple-layered cylindrical living tissue subjected to laser light is determined by numerically solving the transient radiative transfer equation in conjunction with the dual phase lag (DPL) based bioheat equation. Once the temperature field is known, the equilibrium and nonequilibrium entropy production rate (EPR) is calculated based on the hypothesis of classical irreversible thermodynamics and extended irreversible thermodynamics, respectively. The present results are verified against the data from the literature and found a good match between them. A comparative analysis of the Fourier and non-Fourier models is accomplished. The equilibrium and nonequilibrium EPR values for the Fourier model are found to be positive. While the equilibrium EPR is negative for non-Fourier heat conduction and does not satisfy the thermodynamics second law, nonequilibrium EPR is always a positive value for Fourier, DPL, and hyperbolic models and satisfies thermodynamics second law. It has been investigated how thermal relaxation times affect the temperature field and EPRs in tissue are subjected to laser light. 相似文献
552.
Khushbu Kumari Subir Kumar Chakraborty Anjali Sudhakar Anand Kishore 《International Journal of Dairy Technology》2023,76(1):4-14
Different variants of Paneer were prepared with cow milk (CM), buffalo milk (BM), skimmed milk powder (SMP) and blends (40:60, 50:50, 60:40) of SMP with CM/BM. The Paneer composition, texture, microstructure and spread of functional groups were correlated with the dielectric capacitance values. Results depicted a strong correlation (R2 > 0.95) between milk used for Paneer making and its proximate composition in terms of the capacitance value, and it was highest for CM followed by BM; 100% SMP Paneer recorded lowest values. Paneer made from blends of SMP and liquid milk had the lowest transmittance value, indicating higher total protein content. 相似文献
553.
Yugal Kishore Mohanta Debasis Nayak Awdhesh Kumar Mishra Ishani Chakrabartty Manjit Kumar Ray Tapan Kumar Mohanta Kumananda Tayung Rajapandian Rajaganesh Murugan Vasanthakumaran Saravanan Muthupandian Kadarkarai Murugan Gouridutta Sharma Hans-Uwe Dahms Jiang-Shiou Hwang 《International journal of molecular sciences》2022,23(18)
Green nanotechnology is currently a very crucial and indispensable technology for handling diverse problems regarding the living planet. The concoction of reactive oxygen species (ROS) and biologically synthesized silver nanoparticles (AgNPs) has opened new insights in cancer therapy. The current investigation caters to the concept of the involvement of a novel eco-friendly avenue to produce AgNPs employing the wild endolichenic fungus Talaromyces funiculosus. The synthesized Talaromyces funiculosus–AgNPs were evaluated with the aid of UV visible spectroscopy, dynamic light scattering (DLS), Fourier infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The synthesized Talaromyces funiculosus–AgNPs (TF-AgNPs) exhibited hemo-compatibility as evidenced by a hemolytic assay. Further, they were evaluated for their efficacy against foodborne pathogens Staphylococcus aureus, Streptococcus faecalis, Listeria innocua, and Micrococcus luteus and nosocomial Pseudomonas aeruginosa, Escherichia coli, Vibrio cholerae, and Bacillus subtilis bacterial strains. The synthesized TF-AgNPs displayed cytotoxicity in a dose-dependent manner against MDA-MB-231 breast carcinoma cells and eventually condensed the chromatin material observed through the Hoechst 33342 stain. Subsequent analysis using flow cytometry and fluorescence microscopy provided the inference of a possible role of intracellular ROS (OH−, O−, H2O2, and O2−) radicals in the destruction of mitochondria, DNA machinery, the nucleus, and overall damage of the cellular machinery of breast cancerous cells. The combined effect of predation by the cyclopoid copepod Mesocyclops aspericornis and TF-AgNPS for the larval management of dengue vectors were provided. A promising larval control was evident after the conjunction of both predatory organisms and bio-fabricated nanoparticles. Thus, this study provides a novel, cost-effective, extracellular approach of TF-AgNPs production with hemo-compatible, antioxidant, and antimicrobial efficacy against both human and foodborne pathogens with cytotoxicity (dose dependent) towards MDA-MB-231 breast carcinoma. 相似文献
554.
Amith Kishore Pandian Dinesh Babu Munuswamy Santhanakrishnan Radhakrishanan Yuvarajan Devarajan Ramesh Bapu Bathey Ramakrishnan Beemkumar Nagappan 《石油科学(英文版)》2018,15(1):176-184
In this study, the effect of doping hexanol into biodiesel which is from neat cashew nut shell biodiesel oil on the emissions and the performance characteristics was studied in a constant speed diesel engine. The main purpose of this work is to reduce various emissions and also to improve the performance of the diesel engine when fueled with blends of hexanol and neat cashew nut shell biodiesel. Cashew nut shell oil is not edible, and hence it can be used as a viable alternative to diesel. Cashew nut shell biodiesel is prepared by conventional transesterification. Hexanol with 99.2% purity was employed as an oxygenated additive. Experimental studies were conducted by fueling diesel as a baseline and by fueling hexanol and neat cashew nut shell biodiesel mixture. A fuel comprising 10% (by volume) of hexanol and 90% (by volume) neat cashew nut shell biodiesel was referred to as CNSBD900H100 and fuel comprising 20% (by volume) of hexanol and 80% (by volume) of neat cashew nut shell biodiesel was referred to as CNSBD800H200. This study also investigated the possibility of using pure biofuel in an unmodified naturally aspirated diesel engine. The outcome of this study showed that adding hexanol at 10% and 20% (by volume) to cashew nut shell biodiesel results in a reduction in emissions. In addition, a significant improvement in brake thermal efficiency and reduction in brake-specific fuel consumptions were achieved. Hence, it could be concluded that hexanol could be a viable and promising additive for improving the drawbacks of biodiesel when it was used to fuel an unmodified diesel engine. 相似文献
555.
K.B. Gireesh Kishore K. JenaShaik Allauddin K.R. RadhikaRamanuj Narayan K.V.S.N. Raju 《Progress in Organic Coatings》2010
A series of organic–inorganic hybrid coatings were prepared using polyurethane (PU)-urea and glycidoxypropyltrimethoxysilane (GPTMS) To prepare this first acid terminated saturated polyester, having 230 hydroxyl value and acid value 25 mg/KOH, were reacted with coupling agent GPTMS at different concentrations in the presence of base catalyst and each of them were further reacted with isophorone diisocyanate (IPDI) at NCO/OH ratio of 1.6:1 for 4–5 h at 70–80 °C These prepolymers were casted on tin foil and cured at ambient conditions for 6 h and prepared the hybrid coating free films by amalgamation. These free films were stored in the room temperature for 40 days and used for further characterization. The coating without and with different concentrations of GPTMS were named as base polymer and hybrid coatings, respectively. FTIR spectroscopy was used for the structural analysis of the coatings. Thermogravimetric analysis (TGA) showed that thermal stability of the hybrids was significantly higher than the base polymer. The onset degradation temperature of the base polymer starts at 268.9 °C, while it ranges from 279.1 °C to 290.8 °C for the hybrids based on the concentration of GPTMS used. The glass transition temperature (Tg) and storage modulus as determined from DMTA were higher for hybrid coatings as compared to base polymer. Tg of base polymer was 42.3 °C while it varies between 65.8 °C to 83.5 °C for hybrids. 相似文献
556.
Mohanta Yugal Kishore Biswas Kunal Rauta Pradipta Ranjan Mishra Awdhesh Kumar De Debashis Hashem Abeer Al-Arjani Al-Bandari Fahad Alqarawi Abdulaziz A. Abd-Allah Elsayed Fathi Mahanta Saurov Mohanta Tapan Kumar 《Journal of Inorganic and Organometallic Polymers and Materials》2021,31(11):4236-4249
Journal of Inorganic and Organometallic Polymers and Materials - Recent advances in nanotechnology and nano biomaterials have attracted considerable attention in the field of cancer therapy. The... 相似文献
557.
558.
Yugal Kishore Mohanta Sujogya Kumar Panda Kunal Biswas Abiral Tamang Jaya Bandyopadhyay Debashis De Dambarudhar Mohanta Akshaya Kumar Bastia 《IET nanobiotechnology / IET》2016,10(6):438
The present study reports on biogenic‐synthesised silver nanoparticles (AgNPs) derived by treating Ag ions with an extract of Cassia fistula leaf, a popular Indian medicinal plant found in natural habitation. The progress of biogenic synthesis was monitored time to time using a ultraviolet–visible spectroscopy. The effect of phytochemicals present in C. fistula including flavonoids, tannins, phenolic compounds and alkaloids on the homogeneous growth of AgNPs was investigated by Fourier‐transform infrared spectroscopy. The dynamic light scattering studies have revealed an average size and surface Zeta potential of the NPs as, −39.5 nm and −21.6 mV, respectively. The potential antibacterial and antifungal activities of the AgNPs were evaluated against Bacillus subtilis, Staphylococcus aureus, Candida kruseii and Trichophyton mentagrophytes. Moreover, their strong antioxidant capability was determined by radical scavenging methods (1,1‐diphenyl‐2‐picryl‐hydrazil assay). Furthermore, the AgNPs displayed an effective cytotoxicity against A‐431 skin cancer cell line by 3‐(4, 5‐dimethylthiazol‐2‐yl)‐2, 5‐diphenyltetrazolium bromide (MTT) assay, with the inhibitory concentration (IC50) predicted as, 92.2 ± 1.2 μg/ml. The biogenically derived AgNPs could find immense scope as antimicrobial, antioxidant and anticancer agents apart from their potential use in chemical sensors and translational medicine.Inspec keywords: antibacterial activity, biomedical materials, cancer, cellular biophysics, electrokinetic effects, Fourier transform infrared spectra, light scattering, microorganisms, nanomedicine, nanoparticles, silver, skin, spectrochemical analysis, toxicology, ultraviolet spectra, visible spectraOther keywords: Ag, voltage ‐21.6 mV, size ‐39.5 nm, A‐431 skin cancer cell line, cytotoxicity, 1,1‐diphenyl‐2‐picryl‐hydrazil assay, radical scavenging methods, Trichophyton mentagrophytes, Candida kruseii, Staphylococcus aureus, Bacillus subtilis, surface zeta potential, dynamic light scattering studies, Fourier‐transform infrared spectroscopy, alkaloids, phenolic compounds, tannins, flavonoids, phytochemical effect, ultraviolet‐visible spectroscopy, Cassia fistula leaf extract, biogenic‐synthesised silver nanoparticles, cytotoxic activities, antimicrobial activities, antioxidant activities 相似文献
559.
Minghua Xu Xiaowen Ruan Depeng Meng Guozhen Fang Dongxu Jiao Shengli Zhao Zheyang Liu Zhifeng Jiang Kaikai Ba Tengfeng Xie Wei Zhang Jing Leng Shengye Jin Sai Kishore Ravi Xiaoqiang Cui 《Advanced functional materials》2024,34(37):2402330
The sustainable production of hydrogen utilizing solar energy is a pivotal strategy for reducing reliance on fossil fuels. ZnIn2S4 (ZIS), as a typical metal sulfide semiconductor, has received extensive attention in photocatalysis. Although the introduction of sulfur (S) vacancies in ZIS to enhance photocatalytic hydrogen production by creating defect energy levels has been explored, detailed studies on the control and modulation of S-vacancies in ZIS are sparce. This study demonstrates that while moderate levels of S-vacancies can enhance hydrogen evolution, excessive vacancies may hinder the process, underscoring the importance of S-vacancy modulation. Guided by theoretical calculations, We have designed and synthesized ZIS with modulated S-vacancies to realize favorable hydrogen adsorption-free energy and integrated in a Schottky-heterojunction with MXene co-catalysts for enhanced hydrogen evolution. The optimized hydrogen evolution performance of ZnIn2S4/MXene (ZMX) reaches 14.82 mmol g−1 h−1 under visible light irradiation, surpassing many reported ZnIn2S4-based photocatalysts. The enhanced performance is ascribed to widened light absorption and enhanced carrier transportation realized by S-vacancy modulation and the co-catalytic effect. Femtosecond ultrafast absorption (fs-TA) spectra and other in-situ/ex-situ characterizations further prove an efficient separation and transfer in an as-prepared ZMX catalyst. These findings open up new perspectives for designing catalysts with vacancy modulation. 相似文献
560.
Tool wear measurement in turning using force ratio 总被引：1，自引：0，他引：1
S. K. Choudhury K. K. Kishore 《International Journal of Machine Tools and Manufacture》2000,40(6):899
The aim of this work was to develop a reliable method to predict flank wear during the turning process. The present work developed a mathematical model for on-line monitoring of tool wear in a turning process. Force signals are highly sensitive carriers of information about the machining process and, hence, they are the best alternatives for monitoring tool wear. In the present work, determination of tool wear has been achieved by using force signals. The relationship between flank wear and the ratio of force components was established on the basis of data obtained from a series of experiments. Measurement of the ratio between the feed force and the cutting force components (Ff/Fc) has been found to provide a practical method for an in-process approach to the quantification of tool wear. A series of experiments was conducted to study the effects of tool wear as well as other cutting parameters on the cutting force signals, and to establish a relationship between the force signals, tool wear and other cutting parameters. The flank wear and the ratio of forces at different working conditions were collected experimentally to develop a mathematical model for predicting flank wear. The model was verified by comparing the experimental values with the predicted values. The relationship was then used for determination of tool flank wear. 相似文献