Abstract: Angular momenta of electromagnetic waves are important both in concepts and applications. In this work, we systematically discuss two types of angular momenta, i.e., spin angular momentum ...

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Can you imagine running an online store without being able to contact your customers or process their payments? Most of the time, collecting this crucial data is relatively seamless through a simple ...

Abstract: Aimed at the multi-form transient voltage problems in high-penetration renewable energy DC sending-end grids under typical faults, such as transient low-voltage, transient overvoltage, ...

Background Injured or reactive biliary epithelial cells participate in most chronic liver injuries in a process referred to as ductular reaction, which involves multicellular interactions with marked ...

We have the 5-letter answer for NOUN: "a triatomic very reactive form of oxygen that is a bluish irritating gas of pungent odor, that is a major air pollutant in the lower atmosphere but a beneficial ...

Harvard will turn over I-9 forms for nearly all employees in response to an inquiry by the Department of Homeland Security, the University’s human resources office wrote in an email to current and ...

In the video above, you’ll meet Penny, a shelter dog struggling to get adopted due to her kennel reactivity. When people walk by, she barks and lunges—making it hard for potential adopters to see her ...

Type 1 diabetes is now accepted to be a chronic immunoinflammatory disorder. Because it is a disease of inflammation—both of the innate and adaptive immune systems—it is perhaps not surprising that ...

Leigh Thompson is the J. Jay Gerber Professor of Dispute Resolution and Organizations and a director of executive-education programs at Northwestern University’s Kellogg School of Management. She is ...