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Hexamethylenediamine was first reported by Theodor Curtius. [4] It is produced by the hydrogenation of adiponitrile: . NC(CH 2) 4 CN + 4 H 2 → H 2 N(CH 2) 6 NH 2. The hydrogenation is conducted on molten adiponitrile diluted with ammonia, [5] typical catalysts being based on cobalt and iron.
Infant respiratory distress syndrome (IRDS), also known as surfactant deficiency disorder (SDD), [2] and previously called hyaline membrane disease (HMD), is a syndrome in premature infants caused by developmental insufficiency of pulmonary surfactant production and structural immaturity in the lungs.
Bis(trimethylsilyl)amine (also known as hexamethyldisilazane and HMDS) is an organosilicon compound with the molecular formula [(CH 3) 3 Si] 2 NH. The molecule is a derivative of ammonia with trimethylsilyl groups in place of two hydrogen atoms.
The HUD-1 Settlement Statement is a standardized mortgage lending form in use in the United States of America on which creditors or their closing agents itemize all charges imposed on buyers and sellers in consumer credit mortgage transactions. The HUD-1 (or a similar variant called the HUD-1A) is used primarily for reverse mortgages and ...
Expected to be available in late-2021 was the Cinera Edge, [22] featuring the same FOV and 2560×1440 resolution per eye as the earlier Cinera Prime model, but with a much more compact form factor. Other products available in 2021 were the Cinemizer OLED, [ 23 ] with 870×500 resolution per eye, the VISIONHMD Bigeyes H1, [ 24 ] with 1280x720 ...
Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.
Hereditary mucoepithelial dysplasia (HMD), or simply mucoepithelial dysplasia, [1] [2] is a rare autosomal dominant multiepithelial disorder causing systemic maldevelopment of the epithelia and mucous membranes that line the surface of tissues and structures throughout the body, particularly affecting systems affiliated with mucosa, which includes the respiratory, digestive, urinary ...
The Integrated Helmet and Display Sight System (IHADSS) 30 mm M230 chain gun turret on a Boeing AH-64 Apache being aimed with a helmet-mounted sight A helmet-mounted display (HMD) is a headworn device that uses displays and optics to project imagery and/or symbology to the eyes.