摘要:
A method for increasing and/or modulating the yield shear stress of an electrorheological fluid (10) includes applying a sufficient electric field to the fluid (10) to cause the formation of chains of particles, and then applying a sufficient pressure to the fluid (10) to cause thickening or aggregation of the chains. An apparatus (20) for increasing and/or modulating the transfer of force or torque between two working structures (18, 22) includes an electrorheological fluid (10) and electrodes (25, 27) through which an electric field is applied to the fluid (10) such that chains of particles are formed in the fluid (10) and, upon application of pressure to the fluid (10), the chains thicken or aggregate and improve the force or torque transmission.
摘要:
This invention pertains to the use of a degassed perfluorocarbon ('PFC') liquid as a method of removing gas emboli from parts of a patient's body cava. Moreover, the invention can be used as a method of imaging parts of a patient's body cava. Furthermore, the invention can also be used as a way of delivering biological agents to parts of a patient's body cava which contain or are surrounded by gas emboli and/or which are to be imaged. In this invention, a degassed PFC liquid is delivered to a region within the patient's body cava which contains gas emboli and/or which is to be imaged. If gas emboli are present, the degassed liquid is permitted to absorb at least a portion of the emboli. Thereafter, the emboli-containing liquid is removed from the patient or is used as an imaging agent. If gas emboli are not present, the site is imaged before the degassed liquid reaches atmospheric equilibrium. Thereafter, the liquid is removed from the patient. Moreover, by mixing a biological agent with the degassed PFC liquid, the mixture can be used as a way of topically treating parts within a patient's body cava. Furthermore, by regulating the temperature of the degassed liquid, it can also be used as a way of hypo- or hyperthermically treating the patient.
摘要:
A process is provided for controlling a ventilation procedure wherein a liquid ventilation system passes breathing liquid through at least a portion of a patient's pulmonary pathways. In this process, desired ranges for certain process parameters associated with the liquid ventilation system are established. These desired ranges are input into a central processing unit (50). Initial settings for the liquid ventilation system are then made such that the actual conditions which will initially occur during the liquid ventilation procedure fall within their respective desired ranges. Thereafter, the procedure is commenced. During the procedure, conditions are continually monitored by sensors (16, 21, 27). The CPU (50) compares the sensor readings with the desired ranges, and acts to correct any discrepancy. The CPU can trigger alarms (514).
摘要:
Solid supports for solid phase immunoassays comprise polyethyleneimine-coated negatively charged polymeric materials. The combination of negatively-charged polymer support and polyehtyleneimine coating serves to eliminate nonspecific adsorption of biological molecules such as high molecular weight kininogen, which have affinity for solid surfaces and which interfere with immunoassays. The negatively charged polymeric support to which the polyethyleneimine coating is applied may advantageously comprise, for example, a carboxylate-modified styrene microparticle. Antigens or antibodies are coupled by covalent coupling agents to the polyethyleneimine coating to form solid phase immunoreagents. Immonoassays for biological molecules such as high and low molecular weight kininogen are provided.
摘要:
An aqueous core microcapsule has a capsular wall provided with a peptide(s) of pre-determined binding specificity(ies) appended to the surface, the wall being the reaction product of an anionic polymer or salt thereof and a polyamine, salt thereof, mixtures thereof, or mixtures thereof with monoamines. The aqueous core may contain an active ingredient(s), and be targeted for delivery to specific cell tissues. The microcapsules are provided as a composition and in a kit with instructions for use in imaging, diagnosis, therapy, vaccination, and other applications.
摘要:
A container (10) for a liquid crystal cumulative dosimeter including a resilient outer body (12) sealed to confine a first liquid crystal composition constituent (14) and a second liquid crystal composition constituent (16) and having at least one transparent section (20) to permit observation of the color of the confined composition, and a barrier (30, 40) contained completely within and physically unattached to the outer body for separating the first constituent from the second constituent, whereby disruption of the barrier allows the first constituent to mix with the second constituent. The barrier is formed either by encapsulating one or both of the constituents or by using air bubbles. Methods of manufacturing the various containers shown and processes of using those containers are also disclosed.
摘要:
A process is provided for controlling a ventilation procedure wherein a liquid ventilation system passes breathing liquid through at least a portion of a patient's pulmonary pathways. In this process, desired ranges for certain process parameters associated with the liquid ventilation system are established. These desired ranges are input into a central processing unit (50). Initial settings for the liquid ventilation system are then made such that the actual conditions which will initially occur during the liquid ventilation procedure fall within their respective desired ranges. Thereafter, the procedure is commenced. During the procedure, conditions are continually monitored by sensors (16, 21, 27). The CPU (50) compares the sensor readings with the desired ranges, and acts to correct any discrepancy. The CPU can trigger alarms (514).
摘要:
Novel hybrid cell lines produce monoclonal antibody to the light chain region of human factor XII. Three such cell lines, ATCC #HB-9703 through ATCC #HB-9704, are formed by fusing SP2/0-Ag14 myeloma cells with spleen cells from BALB/c AnSkh mice immunized with human factor XIIf. The monoclonal antibodies may be used, for example, for removing human factor XII fragments containing the factor XII light chain, from liquids, e.g. blood plasma products.
摘要:
Therapeutic combinations of an antisense oligonucleotide and another, non-oligonucleotide chemotherapeutic agent are provided which allows for a reduced dosage of the non-oligonucleotide agent, and hence, reduced toxicity to the host. The antisense oligonucleotide component has a nucleotide sequence complementary to at least a portion of the mRNA transcript of a target oncogene or proto-oncongene, the amplification or expression of which is associated with the particular neoplastic disease under treatment. The combination is particularly useful in treating leukemias, more particularly as a bone marrow purging agent.
摘要:
On décrit des analogues peptidiques synthétiques de kininogène humain dont la conformation est restreinte par l'intermédiaire d'une fixation intramoléculaire. Les peptides imitent l'activité biologique du kininogène humain en inhibant l'activité de la protéase biologiquement significative, la calpaïne. Les peptides sont conçus par l'intermédiaire d'un modèle de conformation à l'équilibre de la chaîne lourde de kininogène.