摘要:
Several new powerful chelating agents, suitable for the removal of a variety of certain heavy metal ions from the body of a mammal by oral application, have been synthesized and tested. Structurally, these compounds are partially lipophilic polyaminocarboxylic acids (PACA). They were synthesized in non-aqueous media from triethylenetetramine (TT) by monoalkylation of a primary amino group, followed by exhaustive carboxymethylation of the remaining amino groups using ethylbromoacetate and subsequent alkaline hydrolysis of the ester. In contrast to their non-lipophilic counterparts EDTA and DTPA, compositions of the present inventions exhibit appreciable absorption from the intestine and, therefore, can be administered orally. By varying the length of the alkyl chain, the chelons can be directed primarily to selected target organs. In addition, the compounds can be modified to target particular absorbed heavy metals.
摘要:
Sessions, such as on-line gaming sessions, are maintained by proxy agents on behalf of users even when the users are inactive. The agents, along with other components, form a novel “always-on” architecture that greatly reduces the time it takes to initiate and carry out sessions.
摘要:
The invention includes a method and apparatus for dynamically allocating spectrum available within a region including a plurality of base stations. The method includes obtaining a plurality of spectrum demands associated with at least a portion of the base stations, each spectrum demand requesting a portion of the available spectrum, and determining a plurality of spectrum allocations satisfying at least a portion of the spectrum demands. The spectrum allocations are determined by processing the spectrum demands using network information such as base station information associated with the base stations and region information such as terrain information associated with the region. The region information may include signal propagation information.
摘要:
A gateway for mobile communications comprises a cache for storing network data recently downloaded from a network, a foreign agent, and a packet filter that directs requests for the network data from a mobile node to the cache. The packet filter directs the requested network data from the cache to the mobile node by way of the foreign agent, without forwarding the requested network data to a home agent of the mobile node.
摘要:
The present invention is directed to non-peptidic factor Xa inhibitors which are useful for the treatment of arterial and venous thrombotic occlusive disorders, inflammation, cancer, and neurodegenerative diseases. The factor Xa inhibitors provide compounds having Formula I: or pharmaceutically acceptable salts thereof; wherein Q is phenyl, benzyl, pyridyl, thienyl, indolyl, quinolinyl, benzothienyl, biphenylyl, or imidazolyl; any of which can include one or more optional substituents independently selected from halo, trifluoromethyl, hydroxy, amino, nitro, cyano, C1 alkoxy, C1-3 alkyl, methylenedioxy, carboxamido, acetamido, or amidino; X is methylene, carbonyl, or sulfonyl; Z is methylene, ethylene, or propylene; M is methylene or ethylene; and R1 R2 and R3 are independently hydrogen or C1-3 alkyl.
摘要:
The present invention is directed to non-peptidic factor Xa inhibitors which are useful for the treatment of arterial and venous thrombotic occlusive disorders, inflammation, cancer, and neurodegenerative diseases. The factor Xa inhibitors provide compounds having Formula I: or pharmaceutically acceptable salts thereof; wherein Q is phenyl, benzyl, pyridyl, thienyl, indolyl, quinolinyl, benzothienyl, biphenylyl, or imidazolyl; any of which can include one or more optional substituents independently selected from halo, trifluoromethyl, hydroxy, amino, nitro, cyano, C1-3 alkoxy, C1-3 alkyl, methylenedioxy, carboxamido, acetamido, or amidino; X is methylene, carbonyl, or sulfonyl; Z is methylene, ethylene, or propylene; M is methylene or ethylene; and R1 R2 and R3 are independently hydrogen or C1-3 alkyl.
摘要:
A plurality of spaced ceiling mounted fixtures or other controllable electrical appliances have radiation detectors mounted within each fixture and wired internally of the fixture to a dimming circuit or to a ballast. The radiation detectors have sensitivity over a wide angle and have elongated plastic radiation conduction rods which extend to or beyond the plane of the lens of the fixture to be located free of shadow effects of reflections of the fixture lens. A flexible end light fiber optics can be used in place of the acrylic rods. A narrow beam radiation transmitter selectively illuminates one of the rods or end light fiber optics without illuminating the others. The dimming circuits or ballasts within the fixtures can be further controlled by external dimmers, occupancy sensors, timeclocks, photosensors and other types of input devices. The radiation detector and ballast can occupy a common housing and share the same power supply and circuit board. The microcontroller for the radiation detector operates with a 4 of 4 voting mode until a valid signal is detected to switch the system to a 3 of 4 voting mode. A novel mounting adaptor for mounting a visible light fiber optic cable is disclosed with the visible light fiber optic cable conducting infrared radiation for up to 24 inches.
摘要:
Compounds of formula I ##STR1## wherein Q.sup.1, Q.sup.2, Q.sup.3, Q.sup.4 and Q.sup.5 have any of the meanings given in the specification, their N-oxides, and their pharmaceutically acceptable salts are nonpeptide antagonists NKA, useful for the treatment of asthma etc. Also disclosed are pharmaceutical compositions, processes for preparing the compounds of formula I and intermediates.