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| 1 | Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations显示文摘A hybrid lubricant with improved thermal and tribological properties was developed by blending multiwalled carbon nanotubes(MWCNTs) with alumina-based nanoparticles into cutting fluid at fixed volumetric proportions(10:90). The hybrid cutting fluid was prepared in different volumetric concentrations(0.25, 0.75, and 1.25 vol%), and the tribological properties and contact angles were measured using pin-on-disc tribometry and goniometry, respectively. The study showed a reduction in wear and friction coefficient with increasing nanoparticle concentration. The cutting fluid performance was investigated using minimum quantity lubrication(MQL) in the turning of AISI 304 stainless steel. Regression models were developed for measuring the temperature and tool flank wear in terms of cutting speed, feed, depth of the cut, and nanoparticle concentration using response surface methodology. The developed hybrid nanolubricants significantly reduced the tool flank wear and nodal temperature by 11% and 27.36%, respectively, as compared to alumina-based lubricants. | Anuj Kumar SHARMA Jitendra Kumar KATIYAR Shubrajit BHAUMIK Sandipan ROY | 2019 | Friction2019，7，2： | 7 |
| 2 | Bifurcation behaviors analysis of a plankton model with multiple delays显示文摘 | Anuj Kumar Sharma Amit Sharma Kulbhushan Agnihotri | 2016 | International Journal of Biomathematics2016，9，6： | 2 |
| 3 | STABILITY AND BIFURCATION ANALYSIS OF A DELAYED INNOVATION DIFFUSION MODEL显示文摘In this article, a nonlinear mathematical model for innovation diffusion with stage structure which incorporates the evaluation stage(time delay) is proposed. The model is analyzed by considering the effects of external as well as internal influences and other demographic processes such as emigration, intrinsic growth rate, death rate, etc. The asymptotical stability of the various equilibria is investigated. By analyzing the exponential characteristic equation with delay-dependent coefficients obtained through the variational matrix, it is found that Hopf bifurcation occurs when the evaluation period(time delay, τ) passes through a critical value. Applying the normal form theory and the center manifold argument, we derive the explicit formulas determining the properties of the bifurcating periodic solutions. To illustrate our theoretical analysis, some numerical simulations are also included. | Rakesh KUMAR Anuj Kumar SHARMA Kulbhushan A GNIHOTRI | 2018 | Acta Mathematica Scientia2018，38，2： | 1 |
| 4 | DYNAMICAL BEHAVIOR OF AN INNOVATION DIFFUSION MODEL WITH INTRA-SPECIFIC COMPETITION BETWEEN COMPETING ADOPTERS显示文摘In this paper,we proposed an innovation diffusion model with three compartments to investigate the diffusion of an innovation(product)in a particular region.The model exhibits two equilibria,namely,the adopter-free and an interior equilibrium.The existence and local stability of the adopter-free and interior equilibria are explored in terms of the effective Basic Influence Number(BIN)R_(A).It is investigated that the adopter free steady-state is stable if R_(A)<1.By consideringτ(the adoption experience of the adopters)as the bifurcation parameter,we have been able to obtain the critical value ofτresponsible for the periodic solutions due to Hopf bifurcation.The direction and stability analysis of bifurcating periodic solutions has been performed by using the arguments of normal form theory and the center manifold theorem.Exhaustive numerical simulations in the support of analytical results have been presented. | Rakesh KUMAR Anuj Kumar SHARMA Govind Prasad SAHU | 2022 | Acta Mathematica Scientia2022，42，1： | 1 |
| 5 | Telomerase targeted anticancer bioactive prodrug by antisense-based approach 显示文摘 | Neha Kapoor Anuj Kumar Sharma Vishnu Dwivedi | 2007 | Cancer Letters 2482007，，69： | 1 |
| 6 | Use of aluminum oxide nanoparticles in wood composites to enhance the heat transfer during hot-pressing显示文摘 | Anuj Kumar Arun Gupta K V Sharma | 2013 | Eur J Wood Prod2013，71，： | 1 |
| 7 | A crude distillation unit model suitable for online applications显示文摘 | Vineet Kumar Anuj Sharma Indranil Roy Chowdhury | 2001 | Fuel Processing Technology2001，，73： | 1 |
| 8 | Remarkable synergism in methylimidazole-promoted decarboxylation of substituted cinnamic acid derivatives in basic water medium under microwave irradiation: A clean synthesis of hydroxylated(E)- stilbenes显示文摘 | Vinod Kumar Abhishek Sharma Anuj Sharma | 2007 | Tetrahedron2007，63，32： | 1 |
| 9 | Transaminitis is an indicator of mortality in patients with COVID-19:A retrospective cohort study显示文摘BACKGROUND Since its discovery in Wuhan,China in December of 2019,the novel coronavirus has progressed to become one of the worst pandemics seen in the last 100 years.Recently,there has been an increased interest in the hepatic manifestations of coronavirus disease 19(COVID-19).AIM To describe the demographic and clinical characteristics of COVID-19 positive patients and study the association between transaminitis and all-cause mortality.METHODS This is a descriptive retrospective cohort study of 130 consecutive patients with a positive COVID PCR test admitted between March 16,2020 to May 14,2020 at a tertiary care University-based medical center.The Wilcoxon-rank sum test and paired t-test were used for comparing non-parametric and parametric continuous variables respectively and a multivariable logistic regression models to study the association between transaminitis and mortality using SAS version 9.4(SAS Institute,Cary,NC,United States).RESULTS Out of the 130 patients,73(56%)patients were found to have transaminitis and 57(44%)did not.When compared to patients without transaminitis,the transaminitis group was found to have a higher median body mass index(30.2 kg/m2 vs 27.3 kg/m2,P=0.04).In the multivariate analysis those with transaminitis were found to have 3.4 times higher odds of dying as compared to those without transaminitis adjusting for gender,the Age-adjusted Charlson Comorbidity Index and admission to the intensive care unit(P=0.03).CONCLUSION Our study showed that transaminitis on admission was associated with severe clinical outcomes such as admission to the intensive care unit,need for mechanical ventilation,and mortality. | Vishnu Charan Suresh Kumar Prateek Suresh Harne Samiran Mukherjee Kashvi Gupta Umair Masood Anuj Vikrant Sharma Jivan Lamichhane Amit Singh Dhamoon Bishnu Sapkota | 2020 | World Journal of Hepatology2020，12，9： | 0 |
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