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11th century Moravian nasal helmet, Vienna. One of the few remaining examples of such helmets. The nasal helmet was a type of combat helmet characterised by the possession of a projecting bar covering the nose and thus protecting the centre of the face; it was of Western European origins and was used from the late 9th century to at least c. 1250.
Non-invasive ventilation ( NIV) is the use of breathing support administered through a face mask, nasal mask, or a helmet. Air, usually with added oxygen, is given through the mask under positive pressure; generally the amount of pressure is alternated depending on whether someone is breathing in or out. It is termed "non-invasive" because it ...
The treatment and management of COVID-19 combines both supportive care, which includes treatment to relieve symptoms, fluid therapy, oxygen support as needed, [1] [2] [3] and a growing list of approved medications. Highly effective vaccines have reduced mortality related to SARS-CoV-2; however, for those awaiting vaccination, as well as for the ...
(Reuters) - The U.S. Department of Health and Human Services (HHS) said on Thursday it will provide up to $500 million for mid-stage trials evaluating vaccines administered as a nasal spray or ...
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Nasal vaccine. A nasal vaccine is a vaccine administered through the nose that stimulates an immune response without an injection. It induces immunity through the inner surface of the nose, a surface that naturally comes in contact with many airborne microbes. [1] Nasal vaccines are emerging as an alternative to injectable vaccines because they ...
The name Spangenhelm is of German origin. Spangen refers to the metal strips that form the framework for the helmet and could be translated as braces, and -helm simply means helmet. The strips connect three to six steel or bronze plates. The frame takes a conical design that curves with the shape of the head and culminates in a point.
Later designs gained more of a curved design, particularly on the top, to deflect or lessen the impact of blows. [2] The helmet was also extended downward until it reached shoulders. [2] The great helm ultimately evolved from the nasal helmet, which had been produced in a flat-topped variant with a square profile by about 1180. [3]