摘要:
A filling apparatus for, a filling system for and a method of introducing into a container a suspension or solution of a substance, in particular a pharmaceutical substance, in a propellant under pressure, the filling apparatus comprising: a main body (4) including a passageway (20) for communicating, in use, with a valve stem (144) extending from a head (141) of a body (139) of a container (138), the container (138) comprising a metering chamber (143) selectively communicatable by the valve stem (144) with the atmosphere and a storage chamber (140) defined by the body (139); a fill actuator (7) comprising a filling valve assembly (29) in communication with the passageway (20) for selectively introducing thereinto propellant under pressure containing a substance in a suspension or solution; an exhaust actuator (10) comprising an exhaust valve assembly (48) in communication with the passageway (20) for selectively exhausting therefrom propellant under pressure containing substance; and a container-engaging body (16) in communication with the passageway (20) for receiving, in use, the head (141) of the body (139) of the container (138), the container-engaging body (16) being movable relative to the main body (4) so as thereby to cause the valve stem (144) of the container (138) to be selectively positioned in an extended closed position, a depressed open position or an intermediate position therebetween, in which intermediate position the metering chamber (143) of the container (138) is closed to the atmosphere.
摘要:
A method and an apparatus for scanning a vehicle wheel, wherein a location on the wheel is sensed by means of a light beam emitted by a light source and is reflected to a position-sensitive receiver. The spacing of the sensed location relative to a reference location is measured from the directions of the emitted beam and the reflected beam. The light source and the position-sensitive receiver are synchronously pivoted about a common axis by means of a rotary drive including a stepping motor for successive measurement steps. A rotary angle sensor supplies signals proportional to the rotary position of the stepping motor to an evaluation system.
摘要:
The present invention relates to a single source metalloorganic precursor compound of the formula: (2-NR-Q-).sub.l M-A.sub.m (I=0-4, m=0-4, l+m=2 or 4) wherein M is selected form the Group 14 elements of Germanium, Tin or Lead;A and R are independently selected from: amide, alkyl having from 1 to 20 carbon atoms, aryl, substituted aryl, or -Q'-2-NR'L.sub.n (n=1-4) wherein L is selected from nothing or a Lewis base ligand; Q and Q' are each independently selected from Group VIa elements of sulfur, selenium, or tellurium; and 2-NR and 2-NR' are each independently selected from N-heterocyclic aryl or its derivatives. Methods of producing these compounds are also disclosed. These precursor materials provide in a single compound the binary, tertiary, or quaternary metals in a ratio to each other that is controllable by a judicious choice of metal atoms and organic substituents. The metal alloys are useful in a variety for electronic applications, particularly in semiconductors and solar energy.
摘要:
Cis .alpha..alpha., .beta..beta.-3-amino-4-[2-(2-furyl)vinyl-1-yl]-1-methoxycarbonylmethyl-azetidin-2-one is resolved via optically active di-p-toluoyl tartaric acid.