Browsing Year-2018 by Title

Now showing items 315-334 of 354

A survey of chiral hypervalent iodine reagents in asymmetric synthesis

Ghosh, S.; Pradhan, S; Chatterjee, I. (2019-01-01)

The recent years have witnessed a remarkable growth in the area of chiral hypervalent iodine chemistry. These environmentally friendly, mild and economic reagents have been used in catalytic or stoichiometric amounts as ...
Sustainability analysis of pedestrian and cycling infrastructure – a case study for Bangalore

Rahul, T.M.; Verma, A. (2018-11-27)

The current paper proposes a methodological framework incorporating a Composite Sustainability Index (CSI) to determine the sustainability impact on providing segregated footpaths and cycle-lanes. It establishes a ...
Symmetric shear banding and swarming vortices in bacterial superfluids

Guo, S.; Samanta, D.; Peng, Y.; Xu, X.; Cheng, X. (2018-07-26)

Bacterial suspensions—a premier example of active fluids—show an unusual response to shear stresses. Instead of increasing the viscosity of the suspending fluid, the emergent collective motions of swimming bacteria can ...
Synchronization and entrainment of metapopulations: a trade-off among time-induced heterogeneity, dispersal, and seasonal force

Arumugam, R.; Dutta, P.S. (2018-09-19)

Demographic and environmental heterogeneities are prevalent across many natural systems. Earlier studies on metapopulation models have mostly considered heterogeneities either in the demographic parameters or in ...
Synthesis and applications of ordered and disordered mesoporous zeolites: present and future prospective

Srivastava, R. (2018-07-26)

Zeolites are microporous aluminosilicates that are used extensively for a wide variety of industrial applications. Applications of microporous zeolites are limited to transformations of small molecules due to the pore ...
Synthesis of indenopyridine derivatives via MgI2-promoted [2+4] cycloaddition reaction of In-situ generated 2- styrylmalonate from donor-acceptor cyclopropanes and chalconimines

Verma, K.; Banerjee, P. (2018-12-28)

An unexpected MgI2-promoted [2+4] cycloaddition reaction of in-situ generated 2-styrylmalonate from donor-acceptor cyclopropanes with chalconimines to synthesize highly substituted indenopyridine derivatives under the ...
Synthesis, structure, and water oxidation activity of ruthenium(II) complexes: influence of intramolecular redox process on O2 evolution

Dhiman, R.; Nagaraja, C.M. (2018-09-18)

The synthesis and characterization of two new RuII complexes, a mononuclear complex [RuII(MeMPTP)(bpp)Cl]PF6 (1) and a dinuclear complex [RuII(MeMPTP)(bpp)RuII(bpy)2Cl](PF6)3 (2), [where MeMPTP = 4′-(4-methylmercaptophen ...
Systematic investigation for the photocatalytic applications of carbon nitride/porous zeolite heterojunction

Kumar, A.; Samanta, S.; Srivastava, R. (2018-12-27)

Here, we present the integration of a commercially available titanosilicate zeolite with photocatalyst graphitic carbon nitride (g-C3N4) toward the development of an effective heterojunction photocatalyst, TCN(1-8-8). ...
Systematic investigation of precompound emission over compound evaporation in α+89y reaction

Kumar, D.; Maiti, M. (2019-05-14)

The exciton model and the hybrid Monte-Carlo simulation method have been used to investigate the effect of pre-equilibrium emission over compound evaporation in the α+89Y reaction. The pre-equilibrium excitation functions ...
Systematic study of precompound neutron emission in α -particle-induced reactions

Sharma, M. K.; Kumar, M.; Shuaib, M.; Sharma, V. R.; Yadav, A.; Singh, P. P.; Singh, B. P.; Prasad, R. (2021-10-16)

Background: The precompound emission process in light-ion fusion interactions has been a topic of considerable interest to nuclear physicists for many years. Although widespread theoretical and experimental efforts have ...
Technological advances to maximize solar collector energy output: a review

Salvi, S.S.; Bhalla, V.; Taylor, R.A.; Khullar, V.; Otanicar, T.P.; Phelan, P.E.; Tyagi, H. (2019-05-14)

Since it is highly correlated with quality of life, the demand for energy continues to increase as the global population grows and modernizes. Although there has been significant impetus to move away from reliance on ...
Theoretical investigations of asymmetric simple exclusion processes for interacting oligomers

Midha, T.; Gomes, L. V. F.; Kolomeisky, A. B.; Gupta, A. K. (2021-10-18)

Motivated by biological transport phenomena that involve the motion of interacting molecular motors along linear filaments, we developed a theoretical framework to analyze the dynamics of interacting oligomers (extended size ...
Thermal characterization using fourier and non-fourier conduction during radiofrequency ablation of breast tumor

Singh, S.; Repaka, R. (2019-05-22)

Most of the numerical studies on radiofrequency ablation (RFA) utilize the Pennes bioheat equation to predict the temperature distribution and ablation volume post-treatment. The Pennes bioheat equation is based on the ...
Thermal wave imaging for non-destructive testing and evaluation of reinforced concrete structures

Dua, G.; Mulaveesala, R. (2018-12-31)

There is a very long tradition in the building industry of using reinforced concrete structures, due to their low cost, high strength, robustness and sustainability, along with the ready availability of raw materials. ...
Thermo-reversible self-healing in a fluorous crosslinked copolymer

Padhan, A.K.; Mandal, D. (2018-09-19)

Thermo-reversible self-healing of a partially fluorinated crosslinked polymer was achieved by utilizing reversible Diels–Alder (DA) chemistry. Copolymers (PHFBA-co-PFMA) of perfluorobutyl acrylate (HFBA) and furfurylmethacrylate ...
Three-dimensional vortex-bright solitons in a spin-orbit-coupled spin-1 condensate

Gautam, S.; Adhikar, S.K. (2018-11-13)

We demonstrate stable and metastable vortex-bright solitons in a three-dimensional spin-orbit-coupled three-component hyperfine spin-1 Bose-Einstein condensate (BEC) using numerical solution and variational approximation ...
Time-delay-induced instabilities and hopf bifurcation analysis in 2-neuron network model with reaction–diffusion term

Tyagi, S.; Jain, S.K.; Abbas, S.; Meherrem, S.; Ray, R.K. (2019-06-10)

In this paper, we consider a general 2-neuron network model with reaction–diffusion term and time delay. We study the effect of time delay in kinetic terms of reaction–diffusive system. We mainly inves- tigate the effects ...
TLR-3 stimulation skews M2 macrophages to M1 through IFN-αβ signaling and restricts tumor progression

Vidyarthi, A.; Khan, N.; Agnihotri, T.; Negi, S.; Das, D.K.; Md. Aqdas; Chatterjee, D.; Colegio, O.R.; Tewari, M.K.; Agrewala, J.N. (2018-08-31)

During tumor progression, macrophages shift their protective M1-phenotype to pro- tumorigenic M2-subtype. Therefore, conversion of M2 to M1 phenotype may be a potential therapeutic intervention. TLRs are important pathogen ...
To share or not to share? phytoplankton species coexistence puzzle in a competition model incorporating multiple resource-limitation and synthesizing unit concepts

Sarker, S.; Feudel, U.; Meunier, C.L.; Lemke, P.; Dutta, P.S. (2018-12-28)

The predictions of the competitive exclusion principle about the number of coexisting species not exceeding the number of limiting resources in equilibrium constitute an ecological puzzle for phytoplankton ecosystems. ...
Tracking hydrogen embrittlement using short fatigue crack behavior of metals

Singh, V.; Singh, R.; Singh, A.; Mahajan, D.K. (2019-05-20)

Understanding hydrogen embrittlement phenomenon that leads to deterioration of mechanical properties of metallic components is vital for applications involving hydrogen environment. Among these, understanding the influence ...

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