143 research outputs found
Probing Cosmic-ray Propagation with TeV Gamma Rays from the Sun Using the HAWC Observatory
Cosmic rays in the inner solar system are subject to deflection by both the
geomagnetic and interplanetary magnetic fields, and simultaneously interact
with the Sun's photosphere resulting in the production of gamma rays. This
phenomenon can be studied by observing the deficit ("shadow") in the cosmic ray
flux from the direction of the Sun and searching for an excess photon signal
above the isotropic background. The High Altitude Water Cherenkov (HAWC)
Observatory in Mexico has been taking data on the solar disk at TeV energies
since the end of 2014. We present our first efforts to estimate the luminosity
of TeV gamma rays from the Sun which can be used to place limits on the
production mechanisms, including astrophysical processes and beyond the
standard model predictions.Comment: Presented at the 35th International Cosmic Ray Conference (ICRC2017),
Bexco, Busan, Korea. See arXiv:1708.02572 for all HAWC contribution
Constructive Role of Idle Cash in Pakistan: An Empirical Analysis
Idle cash is a short-run phenomenon that turns into active cash and enhances the pace of economic growth. People for short period keep away a part of their cash from the running flow of transaction and injects it into transactions or speculative stream in long run. Low-interest rate discourages savers to earn money so people prefer to keep their money at home. Savers wait to make a positive investment in the long run. In this paper dual estimation techniques i.e., Frequentist and Bayesian are applied over the time period of 1995-2018 in the case of Pakistan. Findings show that householdsâ idle cash has a positive impact on the economic growth of Pakistan. On the basis of findings, it can be recommended that a safe investment environment should be provided to households as it will not only enhance the growth of Pakistanâs economy but also tackle other problems like unemployment and poverty
CoumarinâBased Heteroaromatics as Plant Growth Regulators
Heterocyclic compounds are the largest and most versatile class of organic compounds. Plants produce valuable heterocyclic substances called phytohormones to carry out the growth process. They control the growth or other physiological functions. Both hormones and vitamins are generally referred as plant growth regulators. Aromatic compounds having lactone ring are called coumarin. Coumarin is one of the most important natural substances in plants and is referred to as antiâauxins, as these compounds are considered to play an essential role in plants growth as well as defense
In vitro biological assessment of 1,3,4-oxadiazole sandwiched by azinane and acetamides supported by molecular docking and BSA binding studies
The 1,3,4-Oxadiazole is an aromatic heterocyclic moiety recognized in drug research for its low lipophilicity. The multiple functionalities, heterocyclic azinane, sulfonamide, 1,3,4-oxadiazole and acetamide, are combined collectively to enhance the bioactivity potential of synthesized molecules. All the compounds were acquired by following microwave assisted and conventional techniques in a comparative way. The synthesized derivatives were screened for their antibacterial and enzyme inhibition potential. Furthermore, BSA binding analysis was executed to infer about the interaction with serum albumin. The spectral data of IR, EI-MS, 1H-NMR and 13C-NMR were used to elucidate the final structures of compounds. The synthesized compounds had a modest antibacterial potential. Compound 8f bearing 2-methyl-4,5-dinitrophenyl group was the most active one against all the bacterial strains taken into account and α-glucosidase enzyme. Compound 8d bearing 4-nitrophenyl group was the best acetyl cholinesterase inhibitor and 8i bearing phenylethyl group was the best urease inhibitor
Multi-messenger searches via IceCubeâs high-energy neutrinos and gravitational-wave detections of LIGO/Virgo
We summarize initial results for high-energy neutrino counterpart searches coinciding with gravitational-wave events in LIGO/Virgo\u27s GWTC-2 catalog using IceCube\u27s neutrino triggers. We did not find any statistically significant high-energy neutrino counterpart and derived upper limits on the time-integrated neutrino emission on Earth as well as the isotropic equivalent energy emitted in high-energy neutrinos for each event
- âŠ