Abstract: The disclosure provides coronavirus mRNA vaccines, including vaccines directed against spike proteins of one or more variant strains of SARS-CoV-2, as well as methods of using the vaccines.

Abstract: Embodiments of a recombinant human Parainfluenza Virus (hPIV) F ectodomain trimer stabilized in a prefusion conformation are provided. Also disclosed are nucleic acids encoding the hPIV F ectodomain trimer and methods of producing the hPIV F ectodomain trimer. Methods for inducing an immune response in a subject are also disclosed. In some embodiments, the method can be a method for treating or inhibiting a hPIV infection in a subject by administering a effective amount of the recombinant hPIV F ectodomain trimer to the subject.

Abstract: The disclosure provides coronavirus mRNA vaccines, including vaccines directed against one or more variant strains of SARS-CoV-2, as well as methods of using the vaccines.

Abstract: An electronic device includes a first body, a hinge structure, a second body, a cover plate, a fulcrum, a lever element, a stand and a second gear. The first body has a convection groove and an accommodation groove. The hinge structure includes a driving element and a first gear arranged at the first body. The second body is pivoted to the first body through the hinge structure. The cover plate is movably disposed at the first body. The fulcrum is disposed at the first body. The lever element is pivoted to the fulcrum, wherein the lever element includes a first end and a second end. The driving element abuts against the first end, and the second end is movably coupled to the cover plate. The stand is movably disposed at the first body. The second gear is connected to the stand and coupled to the first gear.

Abstract: An electronic device includes a first body, a hinge structure, a second body, a cover plate, a fulcrum, a lever element, a stand and a second gear. The first body has a convection groove and an accommodation groove. The hinge structure includes a driving element and a first gear arranged at the first body. The second body is pivoted to the first body through the hinge structure. The cover plate is movably disposed at the first body. The fulcrum is disposed at the first body. The lever element is pivoted to the fulcrum, wherein the lever element includes a first end and a second end. The driving element abuts against the first end, and the second end is movably coupled to the cover plate. The stand is movably disposed at the first body. The second gear is connected to the stand and coupled to the first gear.

Abstract: An electronic device includes a first body, a second body, a shaft, a cam, a cover plate, a fulcrum and a lever element. The first body has a convection groove. The shaft is connected to the second body. The fulcrum is connected to the shaft and disposed in the first body. The second body is pivoted to the first body through the shaft and the cam. The cover plate is movably disposed on the first body and configured to operably hide the convection groove. The fulcrum is disposed in the first body. The lever element is disposed in the first body and pivots about the fulcrum. The lever element includes a first end and a second end, respectively located at two opposite sides of the fulcrum. The cam abuts against the first end, and the second end is movably coupled to the cover plate.