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Electron scattering by methane molecule plays a crucial role in understanding the interaction dynamics between electrons and molecules In this research we focus on investigating the elastic and rotational excitation process for electron scattering by CH_4 within the energy range of 530 eVThe main objective is to calculate the differential and total cross sections to provide insights into the scattering behavior and energy transfer mechanisms involved in these collisions To achieve this advanced theoretical model and computational method are employed Accurate potential energy and interaction potentials specific to CH_4 are utilized to ensure reliable and precise calculations The calculated cross sections are compared with experimental data and previous theoretical studies to validate their accuracy and assess the effectiveness of the computational approach The results obtained from the calculations of the differential and total cross sections shed light on the angular distribution of the scattered electrons the potential energy governing the electronmolecule interaction and the rotational dynamics of CH_4 molecule during electron collisions These findings contribute to a comprehensive understanding of electronmolecule interactions and have implications in various scientific disciplines The research provides a comprehensive investigation of electron scattering by CH_4 and offers valuable insights into the underlying physics of elastic and rotational excitations The calculated cross sections serve as fundamental inputs for theoretical models and simulations enhancing our ability to predict and interpret experimental observations The outcomes of this study contribute to the broader field of electronmolecule interactions and pave the way for further advancements in this area of research
Science Advances, 2019
Cannabis is one of the oldest cultivated plants in East Asia, grown for grain and fiber as well as for recreational, medical, and ritual purposes. It is one of the most widely used psychoactive drugs in the world today, but little is known about its early psychoactive use or when plants under cultivation evolved the phenotypical trait of increased specialized compound production. The archaeological evidence for ritualized consumption of cannabis is limited and contentious. Here, we present some of the earliest directly dated and scientifically verified evidence for ritual cannabis smoking. This phytochemical analysis indicates that cannabis plants were burned in wooden braziers during mortuary ceremonies at the Jirzankal Cemetery (ca. 500 BCE) in the eastern Pamirs region. This suggests cannabis was smoked as part of ritual and/or religious activities in western China by at least 2500 years ago and that the cannabis plants produced high levels of psychoactive compounds.
HAL (Le Centre pour la Communication Scientifique Directe), 2013
F1000Research, 2020
The COVID-19 pandemic has posed and is continuously posing enormous societal and health challenges worldwide. The research community has mobilized to develop novel projects to find a cure or a vaccine, as well as to contribute to mass testing, which has been a critical measure to contain the infection in several countries. Through this article, we share our experiences and learnings as a group of volunteers at the Centre for Genomic Regulation (CRG) in Barcelona, Spain. As members of the ORFEU project, an initiative by the Government of Catalonia to achieve mass testing of people at risk and contain the epidemic in Spain, we share our motivations, challenges and the key lessons learnt, which we feel will help better prepare the global society to address similar situations in the future.
Journal of Agricultural Economics, 2015
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Radiologia Brasileira, 2009
Revista chilena de neuro-psiquiatría, 2005
Journal of Agricultural Science, 2020
Comptes rendus de l'Académie des sciences. Série 2. Sciences de la terre et des planètes, 1998