Abstract: The present invention provides a low viscosity photocurable composition including (i) a cationically curable component comprising a polyglycidyl epoxy compound (ii) a free radically active component (iii) a cationic photoinitiator (v) a free radical photoinitiator and optionally (iv) one or more optional components. The photocurable composition can be cured using rapid prototyping techniques to form clear, colorless three-dimensional articles having excellent mechanical properties.

Abstract: The present invention provides a low viscosity photocurable composition including (i) a cationically curable component (ii) a free radically active component (iii) an antimony-free cationic photoinitiator (v) a free radical photoinitiator, and (vi) a toughening agent. The photocurable composition can be cured using rapid prototyping techniques to form three-dimensional articles which can be used in various aerospace and investment casting applications.

Abstract: A lightweight throttling mechanism allows for dynamic control of access to resources in a distributed environment. Each request received by a server of a server group is parsed to determine tokens in the request, which are compared with designated rules to determine whether to process or reject the request based on usage data associated with an aspect of the request, the token values, and the rule(s) specified for the request. The receiving of each request can be broadcast to throttling components for each server such that the global state of the system is known to each server. The system then can monitor usage and dynamically throttle requests based on real time data in a distributed environment.

Abstract: The present invention provides a clear, low viscosity photocurable composition including (i) a cationically curable compound (ii) an acrylate-containing compound (iii) a polyol-containing mixture (iv) a cationic photoinitiator and (v) a free radical photoinitiator. The photocurable composition can be cured using rapid prototyping techniques to form opaque-white three-dimensional articles having ABS-like properties.

Abstract: A point-to-multipoint broadband local area network (BLAN) system comprising a local area modem controller (LAMC) and plurality of local area modems (LAMs) is capable of voice, video and data communications. The medium is capable of reliably supporting multiple downstream and upstream channels to meet the need of high-capacity and QoS of digital entertainment. Media-access-control (MAC) functions in the LAMC and the LAMs coordinate packet stream transmissions. The shared medium can be a tree-branch coaxial cable; the LAMs can be legacy DOCSIS or EuroDOCSIS cable modems or enhanced cable modems with multiple channels; the MAC can be a DOCSIS MAC or an enhanced multi-channel full-service MAC (fsMAC). The physical layer of each channel can be that of DOCSIS, wideband, or other technologies. Residential gateway and wide-area broadband modem functions can also be incorporated into the LAMC. Cable TV programming channels and the BLAN can shared the same cable spectrum.

Abstract: A method of making a 3-D object from a photocurable composition, including (a) a cationically curable monomer; (b) a radically curable monomer; (c) reactive particles comprising a crosslinked polysiloxane core and a shell of reactive groups on an outer surface of the core, wherein the reactive groups comprise epoxy groups, ethylenically unsaturated groups, or hydroxy groups; (d) a radical photoinitiator; and (e) a cationic photoinitiator; the method comprising (1) forming a first layer of the photocurable composition; (2) exposing the first layer to actinic radiation sufficient to harden the first layer; (3) forming a second layer of the photocurable composition above the hardened first layer; (4) exposing the second layer to actinic radiation sufficient to harden the second layer; and (5) repeating steps (3)-(4) as needed to form a 3-D object.

Abstract: The present invention is directed to a photoinitiator composition comprising two different cationic photoinitiators and a photocurable composition comprising said photoinitiator composition. Moreover, the present invention relates to the use of the photoinitiator composition and the photocurable composition. Furthermore, the present invention relates to a process for producing a three dimensional article.

Abstract: The present invention is directed to a photoinitiator composition comprising two different cationic photoinitiators and a photocurable composition comprising said photoinitiator composition. Moreover, the present invention relates to the use of the photoinitiator composition and the photocurable composition. Furthermore, the present invention relates to a process for producing a three dimensional article.

Abstract: In a point to multi-point share-media network, method and apparatus of media access control (MAC) for a modem termination system (MTS) to communicate with a plurality of modems over a set of downstream and upstream channels comprising the steps of designating a MAC domain comprising the set of downstream and upstream channels, in which a primary downstream channel and a primary upstream channel being chosen from the set of channels for MAC message exchanges between the MTS and the modems; establishing synchronization with the modems; calibrating upstream transmission parameters and registering each of the modems; receiving without error a bandwidth request from the modem in one of the allocated contention transmission time slots; and transmitting a bandwidth grant to the modems to transmit a number of bytes, starting at a specified time and at a periodic time interval thereafter, with a specified burst profile, and in a specified upstream channel.

Abstract: The present invention provides a low viscosity photocurable composition including (i) a cationically curable component comprising a polyglycidyl epoxy compound (II) a free radically active component (iii) a cationic photoinitiator (v) a free radical photoinitiator and optionally (iv) one or more optional components. The photocurable composition can be cured using rapid prototyping techniques to form clear, colorless three-dimensional articles having excellent mechanical properties.

Abstract: A photocurable composition comprising: (a) a cationically curable component preferably formed from one or more epoxy compound(s), (b) an acrylate component having no or a low amount of hydroxy groups preferably dipentaerythritol hexaacrylate, (c) a polyol component, preferably a polyether polyol, (d) a cationic photoinitiator; and (e) a free radical photoinitiator. The composition may produce when cured three-dimensional articles with high clarity and improved mechanical properties.

Abstract: In a point to multi-point share-media network, method and apparatus of media access control (MAC) for a modem termination system (MTS) to communicate with a plurality of modems over a set of downstream and upstream channels comprising the steps of designating a MAC domain comprising the set of downstream and upstream channels, in which a primary downstream channel and a primary upstream channel being chosen from the set of channels for MAC message exchanges between the MTS and the modems; establishing synchronization with the modems; calibrating upstream transmission parameters and registering each of the modems; receiving without error a bandwidth request from the modem in one of the allocated contention transmission time slots; and transmitting a bandwidth grant to the modems to transmit a number of bytes, starting at a specified time and at a periodic time interval thereafter, with a specified burst profile, and in a specified upstream channel.

Abstract: In a point to multi-point share-media network, method and apparatus of media access control (MAC) for a modem termination system (MTS) to communicate a plurality of modems over a set of downstream and upstream channels comprising the steps of designating a MAC domain comprising the set of downstream and upstream channels, in which a primary downstream channel and a primary upstream channel being chosen from the set of downstream and upstream channels for MAC message exchanges between the MTS and the modems; S establishing synchronization with the modems by broadcasting first MAC messages via the primary downstream channel; establishing the MAC domain with the modems by broadcasting second MAC messages via the primary downstream channel; calibrating upstream transmission parameters for each of the modems for at least the primary upstream channel by third MAC message exchanges via the primary upstream channel and the primary downstream channel; registering each of the modems by fourth MAC message exchanges via

Abstract: The present invention provides a low viscosity photocurable composition including (i) a cationically curable component (ii) a free radically active component (iii) an antimony-free cationic photoinitiator (v) a free radical photoinitiator, and (vi) a toughening agent. The photocurable composition can be cured using rapid prototyping techniques to form three-dimensional articles which can be used in various aerospace and investment casting applications.

Abstract: An image-guided irradiation system has a support stage, a stage-positioning assembly connected to the support stage, an x-ray source attached to a support arm in which the support arm is movable relative to the support stage, a flat-panel x-ray detector disposed proximate the support stage, and at least one of a collimator or an x-ray lens selectively disposable between the x-ray source and the support stage. The x-ray source is suitable to provide an imaging beam of X-rays at a first photon energy and is suitable to provide an irradiation beam of X-rays at a second photon energy. The collimator or x-ray lens is structured and arranged to define at least a width of the irradiation beam when it is disposed between the x-ray source and the support stage while the x-ray source is in operation.

Abstract: A photocurable composition comprising: (a) a cationically curable component preferably formed from one or more epoxy compound(s), (b) an acrylate component having no or a low amount of hydroxy groups preferably dipentaerythritol hexaacrylate, (c) a polyol component, preferably a polyether polyol, (d) a cationic photoinitiator; and (e) a free radical photoinitiator. The composition may produce when cured three-dimensional articles with high clarity and improved mechanical properties.

Abstract: Bicyclic pyrazoles of Formula I are inhibitors of HIV integrase and inhibitors of HIV replication: wherein Z is O or N(R8); n is an integer equal to zero or 1; and R1, R2, R3, R4, R5, R6, R7 and R8 are defined herein. The compounds are useful in the prevention and treatment of infection by HIV and in the prevention, delay in the onset, and treatment of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.

Abstract: Bicyclic uracils and related compounds are inhibitors of HIV integrase and inhibitors of HIV replication. In one embodiment, the compounds are of Formula I: wherein a, b, Y, R1, R2, R3 and R4 are defined herein. The compounds are useful in the prevention and treatment of infection by HIV and in the prevention, delay in the onset, and treatment of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.

Abstract: A photocurable composition, including (a) a photocurable monomer, e.g. a cationically curable monomer and/or a radically curable monomer; (b) reactive particles comprising a crosslinked elastomeric core, e.g. made of polysiloxane material, and a shell of reactive groups on an outer surface of the core, wherein the reactive groups comprise epoxy groups, ethylenically unsaturated groups, or hydroxy groups; and (c) an appropriate photoinitiator, e.g. a radical photoinitiator; and a cationic photoinitiator. A method of making a 3-D object from such a composition and a 3-D object made by the method are also provided. The cured composition generally has a smooth surface. The use of the reactive particles makes the composition more stable and the particles do not readily separate out.

Abstract: Hydroxy (tetra- or hexa-)hydronaphthyridine dione compounds of Formula I are inhibitors of HIV integrase and inhibitors of HIV replication: (I) wherein a, R,1?, R,2?, R,3?, R,4? and R,5? are defined herein. The compounds are useful in the prevention and treatment of infection by HIV and in the prevention, delay in the onset, and treatment of AIDS. The compounds are employed against HIV infection and AIDS as compounds per se or in the form of pharmaceutically acceptable salts. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.