Pasta properties of the neutron star within effective relativistic mean-field model

We study the properties of pasta structures and their influence on the neutron star observables employing the effective relativistic mean-field theory (E-RMF). The compressible liquid drop model is used to incorporate the finite size effects, considering the possibility of non-spherical structures in the inner crust. The unified equation of state are constructed for several E-RMF parameters to study various properties such as pasta mass and thickness in the neutron star's crust. The majority of the pasta properties are sensitive to the symmetry energy in the subsaturation density region. Using the results from Monte Carlo simulations, we estimate the shear modulus of the crust in context of quasiperiodic oscillations from soft gamma-ray repeaters and calculate the frequency of fundamental torsional oscillation mode in the inner crust. Global properties of the neutron star such as mass-radius profile, the moment of inertia, crustal mass, crustal thickness and fractional crustal moment of inertia are worked out. The results are consistent with various observational and theoretical constraints.Comment: 15 pages, 10 figures, 3 tables, comments welcome. The unified equation of states including pasta phases are available on GitHub (https://github.com/hcdas/Unfied_pasta_eos

Experimental and DFT Studies on Cp*Co(III)-Catalyzed Selective C8-Olefination and Oxyarylation of Quinoline N-Oxides with Terminal Alkynes

Herein we report Cp*Co(III)-catalysed site-selective (C8)-H olefination and oxyarylation of quinoline N-oxides with terminal alkynes. The selectivity for C8-olefination and oxyarylation is sterically and electronically controlled. In case of quinoline N-oxides (unsubstituted at C2-position), only olefination product is obtained irrespective of the nature of alkynes. In contrast, majorly oxyarylation is observed when 2-substituted quinoline N-oxides are reacted with bulkier alkynes such as 9-ethynyl phenanthrene. However, alkynes with electron-withdrawing groups provided only olefination products with 2-substituted quinoline N-oxides also. The developed strategy allowed a facile functionalization of naturally derived quinoline N-oxides and terminal alkynes to deliver corresponding olefinated and oxyarylated products. In the developed protocol, the \u27N-O’ bond played a dual role i.e., as a traceless directing group and an oxygen atom source (in case of oxyarylation), which is confirmed by 18O-labeling and crossover experiments. In addition, control experiments, deuterium labeling experiments, KIE studies and DFT studies are performed to understand the mechanism and origin of selectivity for different substrates. DFT studies revealed that the alkyne addition into Co-C bond is the rate limiting step. The observed product selectivity is reproduced by DFT methods. Furthermore, the energy decomposition analysis is performed to understand the origin of selec-tivity

Book of Abstracts of the 2nd International Conference on Applied Mathematics and Computational Sciences (ICAMCS-2022)

It is a great privilege for us to present the abstract book of ICAMCS-2022 to the authors and the delegates of the event. We hope that you will find it useful, valuable, aspiring, and inspiring. This book is a record of abstracts of the keynote talks, invited talks, and papers presented by the participants, which indicates the progress and state of development in research at the time of writing the research article. It is an invaluable asset to all researchers. The book provides a permanent record of this asset. Conference Title: 2nd International Conference on Applied Mathematics and Computational SciencesConference Acronym: ICAMCS-2022Conference Date: 12-14 October 2022Conference Organizers: DIT University, Dehradun, IndiaConference Mode: Online (Virtual

Abstracts of National Conference on Research and Developments in Material Processing, Modelling and Characterization 2020

This book presents the abstracts of the papers presented to the Online National Conference on Research and Developments in Material Processing, Modelling and Characterization 2020 (RDMPMC-2020) held on 26th and 27th August 2020 organized by the Department of Metallurgical and Materials Science in Association with the Department of Production and Industrial Engineering, National Institute of Technology Jamshedpur, Jharkhand, India. Conference Title: National Conference on Research and Developments in Material Processing, Modelling and Characterization 2020Conference Acronym: RDMPMC-2020Conference Date: 26–27 August 2020Conference Location: Online (Virtual Mode)Conference Organizer: Department of Metallurgical and Materials Engineering, National Institute of Technology JamshedpurCo-organizer: Department of Production and Industrial Engineering, National Institute of Technology Jamshedpur, Jharkhand, IndiaConference Sponsor: TEQIP-