摘要:
A pump for transferring particulate material from a source to a remote location, including a particulate chamber having open ends, check valves at the open ends, a vacuum source connected to the chamber adjacent one end, a gas source at the opposed end of the chamber and a control which alternatively connects the vacuum to the chamber to draw particulate material from the source to the chamber and connecting the gas under pressure to drive the particulate material to the remote location. In a preferred embodiment, the chamber has a cylindrical inner diameter and the source of vacuum is a venturi pump connected to a pinch valve permitting overflow of particulate material through the pinch valve and venturi pump, which is returned to the source. In one embodiment, the pinch valve surrounds an open end of the chamber permitting overflow while avoiding agglomeration of the particulate material.
摘要:
Implantable prosthetic valve systems and methods for implanting them are provided. Magnets are employed within one or more components of the valve systems to facilitate anchoring of the prosthetic valve at a target implant site, delivery of the prosthetic valve to the target implant site or both.
摘要:
The present invention relates to delivering adaptive content to a user via a user output device, typically a computer. In general, user information associated with a particular user is retrieved and activity selection and topic selection information are received. A set of one or more questions is retrieved based upon the selected topic and the user information. The retrieved question set is presented to the user in the context of interacting with the selected activity. Progression through the selected activity results from successfully answering the questions. In some instances, questions may be evaluated for bias with respect to particular user group(s). Further, certain embodiments may support assignment of particular topics, questions and/or activities to particular users or user groups. Facilities may also be supported for aiding users in developing and/or expanding the available questions, topics and/or activities.
摘要:
Provided is a method for detecting metastases of epithelial cancers, comprising detecting in non-primary tissue overexpression of a nucleic acid of KS1/4, or detecting in non-primary tissue overexpression of a combination of nucleic acids of KS1/4 and PIP, of nucleic acids of KS1/4 and mam, of nucleic acids of PIP and mam, of nucleic acids of KS1/4, PIP and mam, or of nucleic acids of KS1/4 and lunx, the overexpression of a nucleic acid of KS1/4, or the overexpression of a combination of nucleic acids of KS1/4 and PIP, of nucleic acids of KS1/4 and mam, of nucleic acids of PIP and mam, of nucleic acids of KS1/4, PIP and mam, or of nucleic acids of KS1/4 and lunx in non-primary tissue being correlated with metastases of epithelial cancers.
摘要:
Methods and devices for forming an anastomosis between hollow bodies utilize magnetic force to couple anastomotic securing components and connect the lumens of the hollow bodies. End-to-side, side-to-side and end-to-end anastomoses can be created without using suture or any other type of mechanical fasteners, although such attachment means may be used in practicing some aspects of the invention. The securing components have the ability to produce a magnetic field and may include materials or assemblies. A component may also be used to form a port into the lumen of a vessel, the component being attached to the vessel by mechanical and/or magnetic means. Magnetic components may include means for concentrating the magnetic flux between respective components to increase the attraction force, thereby enhancing the security of the anastomosis. Also, rather than form a port communicating with a lumen of a vessel or other cavity, the components may have an occlusion surface and be used to close an opening in tissue, e.g., an atrial septal defect.
摘要:
A wireless system for self-service shopping is described that includes a customer identification device with an optically readable code, a portable terminal that includes an optical code reader, a local area radio, a terminal controller, and a locking mechanism, a master station, consisting of a master controller and a master radio, and a receiving rack for the portable terminals to which the scanners may be locked using the locking mechanism. A customer presents his or her identification device to a terminal which reads the code, the code is transferred by radio to the master controller which checks the identification and, if valid, sends an authorized signal by radio to the terminal to unlock the scanner. In addition, several locking mechanisms are described that are controlled by the terminal controller. An additional feature provides a shopping cart with a receiving cradle for a portable terminal that allows the customer to lock the scanner onto the cart for hands-free shopping.
摘要:
A process for treating Artemia brine shrimp cysts, which are deemed unhatchable, by the following steps: rehydrating the cysts in clear water until they are approximately double their weight; mechanically rupturing the rehydrated cysts without destroying the internal embryo content of the cysts; centrifuging the resulting slurry to extract the content of the cysts from fragmented casings; and processing the slurry to stabilize the contained nutritional values thereof.