Abstract:
Pure dimer and trimer compounds of hematoporphyrin are prepared and shown to be effective agents in photodynamic therapy. The compounds of the invention are of the formula ##STR1## wherein each X is independently 1-hydroxyethyl or vinyl and wherein R is H or lower alkyl. The compounds of the invention can be conjugated to targeting substances such as immunoglobulins or to labels.
Abstract:
To obtain tumor-selective, photosensitizing drugs useful in the localization of neoplastic tissue and treatment of abnormal neoplastic tissue such as tumors, one of two methods is used. In the first method, a hydrolyzed mixture of the products of reaction of hematoporphyrin with acetic acid and sulfuric acid is cycled through a microporous membrane system to exclude low molecular weight products. In the second method, drugs are synthesized or derived from other pyrrole compounds. The drugs: (1) include two covalently bound groups, each with four rings, some of which are pyrroles such as phlorins, porphyrins, chlorins, substituted pyrroles, substituted chlorins or substituted phlorins, each group being arranged in a ring structure, connected covalently to another group and have a triplet energy state above 37.5 kilocalories per mole; (2) are soluble in water, forming an aggregate of over 10,000 molecular weight in water and have an affinity for each other compared to serum protein such that 10 to 100 percent remain self aggregated in serum protein; and (3) are lipophyllic and able to disaggregate and attach to cell plasma, nuclear membrane, mitochondria, lysosomes and tissue. The drug obtained by the first method has an empirical formula of approximately C.sub.68 H.sub.70 N.sub.8 O.sub.11 or C.sub.68 H.sub.66 N.sub.8 O.sub.11 Na.sub.4.
Abstract:
An electrochemical cell includes a can having a first end and a second end and a first element provided within the can and including an electrode. The cell also includes a first terminal integrally formed as a part of the can and extending from one of the first or second ends. The cell further includes a terminal assembly directly coupled to the first element and including a stud configured to act as a second terminal. The first end includes a boss that defines an aperture through which the stud extends, wherein the boss at least partially surrounds the stud and a bushing coupled to the stud.
Abstract:
A workpiece cutting apparatus includes a laser source, a first suction system, and a first finger configured to guide a workpiece as it moves past the laser source. The first finger includes a first end provided adjacent a point where a laser from the laser source cuts the workpiece, and the first end of the first finger includes an aperture in fluid communication with the first suction system.
Abstract:
An electrochemical cell including a housing configured to receive a cell element. The housing has an electrically-insulating material including metal oxide particles provided on at least a portion of an inner surface thereof to prevent electrical contact between the housing and the cell element. A method of manufacturing an electrochemical cell including applying an electrically-insulating material including metal oxide particles to an inner surface of a housing for an electrochemical cell and inserting a cell element into the housing.
Abstract:
A battery system includes a plurality of battery modules electrically coupled together in series. The battery system also includes a first electronic control unit (ECU) configured to act as a master ECU. The master ECU is electronically coupled to a first one of the plurality of battery modules. The battery system further includes a plurality of slave ECUs, wherein each slave ECU is electronically coupled to one of the other of the plurality of battery modules. The master ECU is configured to control whether electrical power is provided to each of the plurality of slave ECUs.
Abstract:
A battery system for use in a vehicle is configured to provide at least a portion of the propulsion power for the vehicle and includes a plurality of battery modules. Each battery module includes a plurality of electrochemical cells configured to store an electrical charge. The battery system also includes a plurality of fan assemblies each having a motor and at least one fan blade. Each fan assembly is associated with one of the plurality of battery modules to regulate the temperature thereof. A first fan assembly of the plurality of fan assemblies has a different configuration than at least one of the other of the plurality of fan assemblies or is configured to provide an output that is different from an output provided by at least one of the other of the plurality of fan assemblies.
Abstract:
Provided herein are compounds for detection, diagnosis and treatment of target tissues or target compositions, including hyperproliferative tissues such as tumors, using photodynamic methods. In particular, photosensitizer compounds that collect in hyperproliferative tissue are provided. In another embodiment, compounds that absorb light at a wavelength of from about 700 to about 850 nm are provided. In a further embodiment, compounds that are detectable by magnetic resonance imaging are provided.
Abstract:
An electrode for an electrochemical cell including a polymer substrate, a conductive material in contact with the polymer substrate, a conductive ink in contact with the conductive material, and an active electrode material in contact with the conductive ink. The conductive ink is configured to enhance the adhesion between the conductive material and the active electrode material.