摘要:
This disclosure depicts a process for reclaiming from contaminated color cathode ray tube screening waste rare earth oxysulfide phosphors, especially the red-emitting phosphor yttrium oxysulfide. The screening waste from which the phosphor material is to be reclaimed may contain, in addition to the phosphor material contaminants such as hardened photoresist material, blue-emitting and green-emitting zinc sulfide type phosphor materials and graphite. The novel phosphor reclaim process disclosed is characterized by having steps including subjecting the partially purified oxysulfide phosphor material to a wash in dilute nitric, acetic, hydrochloric or citric acid, preferably citric acid, in order to enhance the adherability of the reclaimed phosphor material during subsequent rescreening thereof. The phosphor material is subjected to a wash with sodium tri-polyphosphate to minimize during rescreening of the phosphor material cross-contamination of underlying blue-emitting or green-emitting phosphor materials. In accordance with another aspect of the disclosed reclaim process, graphite contaminants are separated from the phosphor material being reclaimed by suspending the graphite-contaminated phosphor material in an aqueous bath, adding tri-polyphosphate to the bath to cause the phosphor material to settle and then decanting the still suspended graphite.
摘要:
A technique of generating a stereoscopic panorama image includes panning a portable camera device, and acquiring multiple image frames. Multiple at least partially overlapping image frames are acquired of portions of the scene. The method involves registering the image frames, including determining displacements of the imaging device between acquisitions of image frames. Multiple panorama images are generated including joining image frames of the scene according to spatial relationships and dynamically determining stereoscopic counterpart relationships between the multiple panorama images. The multiple panorama images are processed based on the dynamically determined stereoscopic counterpart relationships to form a stereoscopic panorama image.
摘要:
A medication delivery device for delivering a medicament by inhalation, said device comprising a housing (2) defining a chamber adapted to receive a metered dose of medication from a medication dispensing device, such as a pressurised metered dose inhaler canister or a dry powder inhaler, said chamber having an outlet (4) communicating with a mouthpiece of the device whereby said metered dose of medication can be withdrawn from the chamber via the mouthpiece by inhalation by a patient, said chamber being provided with a moveable wall (5) moveable between a first position and a second position, whereby said moveable wall is arranged to move from its first position to its second position as a patient withdraws a dose of medication from the chamber by inhalation to verify complete inhalation of said dose of medication.FIG. 2
摘要:
A technique of generating a stereoscopic panorama image includes panning a portable camera device, and acquiring multiple image frames. Multiple at least partially overlapping image frames are acquired of portions of the scene. The method involves registering the image frames, including determining displacements of the imaging device between acquisitions of image frames. Multiple panorama images are generated including joining image frames of the scene according to spatial relationships and determining stereoscopic counterpart relationships between the multiple panorama images. The multiple panorama images are processed based on the determined stereoscopic counterpart relationships to form a stereoscopic panorama image.
摘要:
Wireless terminals such as mobile phones which provide cellular communications for example for telephony and short message service (SMS) are well known and more recently such terminals are also able to provide FM radio reception. RDS information received at such a terminal is used to access a service provider via any suitable medium e.g. email, fax, telephone, SMS message, etc. This enables the end user to access the service provider quickly and effectively for example, to purchase a copy of a record heard on the radio or to request information about a product advertised on the radio. Also, the service provider is able to deal with the user interaction effectively because the RDS information can be used to assess the user's requirements for the transaction in advance. In a preferred example, the service provider comprises a contact center such as a call center and the RDS information is used to allocate an appropriate call center agent.