2041results about How to "Effective blocking" patented technology

Malicious network activities do not make use of the Domain Name System (DNS) protocol to reach remote targets outside a local network. This DNS-based enforcement system for confinement and detection of network malicious activities requires that every connection toward a resource located outside the local network is blocked by default by the local enforcement box, e.g. a firewall or a proxy. Outbound connections are allowed to leave the local network only when authorized directly by an entity called the DNS Gatekeeper.

A method of screening a software file for viral infection comprising defining a first database of known macro virus signatures, a second database of known and certified commercial macro signatures, and a third database of known and certified local macro signatures. The file is scanned to determine whether or not the file contains a macro. If the file contains a macro, a signature for the macro is determined and screened against the signatures contained in said databases. A user is alerted in the event that the macro has a signature corresponding to a signature contained in said first database and / or in the event that the macro has a signature which does not correspond to a signature contained in either of the second and third databases.

An object of the present invention is to provide an EL display device having high operation performance and reliability. A third passivation film 45 is disposed under the EL element 203 comprising a pixel electrode (anode) 46, an EL layer 47 and a cathode 48, and diffusion of alkali metals from the EL element 203 formed by ink jet method into TFTs is prevented. Further, the third passivation film 45 prevents penetration of moisture and oxygen from the TFTs, and suppress degradation of the EL element 203 by dispersing the heat generated by the EL element 203.

Methods and apparatus for automatically creating a circuit path that includes specified elements are disclosed. According to one aspect of the present embodiment, a method for computing a circuit path between a source node and a destination node of a network includes identifying at least a first element that is to be traversed by the circuit path such that the path passes from the source node, traverses the first element, then passes to the destination node. The method also includes routing a first segment of the circuit path automatically such that the source node and the first element are components of the first segment. In one embodiment, routing the first segment automatically includes routing the first segment automatically using a shortest path first algorithm.

Fuel cells are described and contain a gas diffusion electrode, a gas diffusion counter-electrode, an electrolyte membrane located between the electrode and counter-electrode. The electrode or counter-electrode or both contain at least one modified carbon product. The electrolyte membrane can also or alternatively contain modified carbon products as well. The modified carbon product is a carbon product having attached at least one organic group. Preferably the organic group is a proton conducting group and / or an electron conducting group. The present invention preferably permits the elimination of fluoropolymer binder in the active or catalyst layer and further preferably leads to a thinner active layer and / or a thinner electrolyte membrane. Other uses and advantages are also described.

A fluidic lens device capable of providing variable focal power with reduced optical aberration is disclosed. The device includes a lens member and an actuator. The lens member comprises one or more elastic optical surfaces, a compliant support member in communication with the optical surfaces, and a fluid-filled chamber. The optical surfaces have a high value of elastic modulus, reducing coma and other aberrations associated gravity and acceleration. The support member may provide a compliant fluid seal and allow the edges of the optical surfaces to pivot, reducing spherical and other aberrations. One or more piezoelectric ring-bender actuators may provide the force required for compressing the support ring and deflecting the optical surfaces. The actuators may be configured to provide the fluidic lens device with reduced sensitivity to changes in temperature.

A linear light-emitting diode (LED)-based solid-state universal lamp using a frequency sensing and control mechanism operates normally with both an electronic ballast and the AC mains. The frequency sensing and control mechanism automatically detects voltage types associated with output voltages from the ballast and the AC mains in a single-ended or a double-ended lamp fixture and makes proper management so that the universal lamp works for either case and in either fixture without operational uncertainty. When two shock protection switches are used in two lamp bases, the universal lamp fully protects a person from possible electric shock during initial installation and re-lamping.

An antimicrobial, dustproof fabric includes a textile material layer which is composed of microfibers with an average fiber diameter of from 1 to 100 μm and contains an inorganic porous substance, and a nanofiber nonwoven fabric layer which is laminated on the textile material layer and has an average fiber diameter of at least 1 nm but less than 1,000 nm. Hygienic products such as masks obtained using the fabric efficiently block microbes such as viruses, and inactivate or destroy the captured microbes.

A retractable safety barricade employed to block off an aisle or entryway, comprising a barricade housing that is mounted to a first support and a safety net attached at one end to a winding tube under spring tension located within the barricade housing and at the other to a pull bar, which may be secured to a second support. When the safety barricade is in its first position, the net is fully retracted onto the winding tube within the barricade housing by means of a coil spring. When the safety barricade is in its second position, the net is extended from housing to span the area between first and second supports, substantially covering the opening between the supports and blocking passage through the area. Operation of the device is performed by a single user, who manually extends or retracts the net barrier using the pull bar.

A method to control switching of telephone calls of at least one caller with at least one more callee using a filter is—regarding a filtering that is as efficient as possible with a minimum impact on the regular phone operation—designed in such a way that before switching the telephone call to the callee, a test is performed by the filter to identify the telephone calling behavior of the caller.

A linear light-emitting diode (LED)-based solid-state universal lamp using an all-in-one LED driving circuit with a power factor correction (PFC) and control device operates normally for a regulated power and current from either electronic ballast or AC mains. The all-in-one LED driving circuit is configured to operate in a wide range of input voltages and frequencies, especially for various high voltages and high frequencies associated with various electronic ballasts. With a cycle-by-cycle current control and power switching at a constant on-time and varied off-time, an over-rated surge current is limited, preventing occasional fire hazards occurred in the ballast. When two shock protection switches are used in two lamp bases in the lamp, the universal lamp fully protects a person from possible electric shock during initial installation and re-lamping.

An object is to manufacture a semiconductor device with high reliability by providing the semiconductor device including an oxide semiconductor with stable electric characteristics. In a transistor including an oxide semiconductor layer, a gallium oxide film is used for a gate insulating layer and made in contact with an oxide semiconductor layer. Further, gallium oxide films are provided so as to sandwich the oxide semiconductor layer, whereby reliability is increased. Furthermore, the gate insulating layer may have a stacked structure of a gallium oxide film and a hafnium oxide film.

The invention discloses a high-efficiency plugging oil-base drilling fluid and a preparation method thereof. The drilling fluid is prepared from the following raw materials in parts by mass: 70-80 parts of slurrying oil, 20-30 parts of slurrying water, 2.5-3.0 parts of main emulsifier, 1.5-2.0 parts of auxiliary emulsifier, 2.0-2.5 parts of wetting agent, 2.0-2.5 parts of flow pattern regulator, 2.5-3.0 parts of fluid loss agent, 1.5-2.0 parts of alkalinity regulator, 0.5-0.8 part of extracting agent and 7-9 parts of plugging material. A weighting material is added so that the density of the drilling fluid reaches 1.45-1.56 g / cm<3>. By utilizing the well-drilling positive differential pressure, the high-efficiency plugging oil-base drilling fluid quickly implements bridging, filling and filming to plug the formation fractures on the well wall surface and near the well wall, effectively prevents the drilling fluid and filtrate thereof from permeating into microfractures, enhances the bearing capacity of the formation, has favorable plugging effect, and is beneficial to the stability of the well wall.

The invention discloses a W / O / W type active viscous oil blocking agent. The blocking agent comprises internal phase water, viscous oil and external phase water. A nonionic surfactant is adopted between the internal phase water and the viscous oil. An ionic surfactant is adopted between the viscous oil and the external phase water. According to the invention, a W / O / W composite structure is adopted, W / O with a relatively large viscosity is coated by the external phase water layer, such that defects in prior arts of high viscosity, high construction pressure and poor selectivity upon an oil-water layer during an active viscous oil blocking agent injection process are overcome. With the blocking agent provided by the invention, the ground fluidity is good, and the injection pressure is low. When the blocking agent enters the stratum, the emulsion is demulsified, and W / O emulsion with a high viscosity is released, such that oil well water exits can be effectively blocked, and defects of existing active viscous oil blocking agents are overcome. The technical scheme provided by the invention is especially suitable for technical features of offshore oilfields.

A voltage limiter for a coaxial cable line that carries an RF signal and an AC powering voltage signal is provided, including a signal input carrying a first AC voltage signal and an RF signal, a signal output arranged in series with the input and carrying the RF signal and a second AC voltage signal that is lower than the first AC voltage signal, and a voltage limiting mechanism arranged between the input and the output. The voltage limiting mechanism reduces the first AC voltage signal to the second AC voltage signal without substantially affecting the integrity of the RF signal.

The invention relates to polymer microspheres for in-depth reservoir oil displacement and profile control and a preparation method thereof. In the method, based on the method that photopolymerization is used to prepare the polymer, water-soluble anionic monomer is used and acrylamide monomer water solution, dispersant and crosslinking agent are added to form oil-water mixed emulsion in the mixed medium of surfactant and solvent, then initiator is decomposed by ultraviolet through photopolymerization under controllable temperature so as to initiate emulsion polymerization and 50-500nm of microspheres are formed. The polymer microspheres material prepared by the invention can be used in various environmental conditions and is characterized of safe and stable reaction system, simple and convenient operation, flexible and controllable reaction process and time, high production efficiency, low energy consumption, non-pollution and the like. The invention utilizes the ability of microspheres that microspheres can be dispersed in arbitrary concentration and injected in the water and can gradually swell after entering in depth of the formation to plug the pore throat so as to effectively plug the high permeable strip of the formation, expand the water swept volume and significantly increase crude oil recovery of water flooding reservoir.

The invention provides a multi-element synergic plugging agent and application thereof. The multi-element synergic plugging agent comprises the component 1 or the component 2, wherein the component 1 comprises the following components in parts by weight: 40-50 parts of rigid particles, 15-20 parts of a flexible material, 15-20 parts of an ultrafine filling material, and 15-20 parts of an expansive type polymer: the component 2 comprises the following components in parts by weight: 50-70 parts of rigid particles, 10-25 parts of a flexible material, 10-25 parts of an ultrafine filling material, and 10-30 parts of an expansive type polymer. The multi-element synergic plugging agent disclosed by the invention combines the rigid material with the flexible material, incorporates the elastoplasticity, fully utilizes the synergistic function of the materials, can effectively plug the cracks with different widths, has the performances of high bearing strength, high temperature resistance, deformability and strong binding powder of the cracked stratum, and can be applied to the leaking stoppage operation for the drilling engineering to solve the leakage problem at different degrees.

A method in a computer system for generating an efficient item assortment associated with a plurality of items includes obtaining choice set data specifying a multiplicity of choice sets associated with the plurality of items, where each of the multiplicity of choice sets includes several of the plurality of items, at least some of which are mutually substitutable, obtaining item interaction data descriptive of substitutions between pairs of items in each of the multiplicity of choice sets, obtaining a set of benefit metrics associated with the plurality of items, obtaining a constraint parameter associated with the item assortment, and generating an item selection based at least on the item interaction data, the set of benefit metrics, and the constraint parameter, where the item selection identifies at least one of the plurality of items selected for inclusion in the item assortment.

Systems and techniques are provided for managing and categorizing unsolicited emails from unknown senders using blockchain technology. In a specific implementation, an email authorization system authorizes emails from unknown senders to reach recipient email inboxes after the unknown senders validate the emails by executing blockchain transactions prompted by the email authorization system; else, the emails from unknown senders are not included in the recipient email inboxes. The blockchain transactions are recorded in a blockchain ledger in a blockchain network.

Disclosed is a semiconductor device including plural types of semiconductor elements having structures that have respective thicknesses suitable for their uses formed in the same process. A semiconductor device (100) includes a TFT (40) and a photodiode (50). A gate electrode (110) of the TFT (40) and a light-shielding layer (60) of the photodiode (50) are formed in the same process. However, because the film thickness of the gate electrode (110) is small, the breakage of an island-shaped silicon layer (120), which will be the channel layer, at the edge of the gate electrode (110) can be prevented. Also, because the film thickness of the light-shielding layer (60) is large, the light entering through a surface of a glass substrate (101) on the side opposite from the surface on which the TFT is formed can be reliably blocked by the light-shielding layer (60). Consequently, the detection sensitivity of the photodiode (50) can be increased.

A device for occluding a body lumen, and particularly contraceptive or sterilization device for occluding a reproductive tract or lumen to prevent the passage of reproductive cells through the tract or lumen, generally comprising a tubular member, and a mesh member, transversely disposed on the tubular member lumen. The mesh member is permeable to allow for tissue ingrowth, which produces a tissue impregnated mesh occluding the body lumen. The occluding device of the invention can be used in the fallopian tubes of a female patient, the vas deferens of a male patient, or other body lumen.

The invention relates to multifunctional protective composite coating material, which is recombined with one layer or multilayer specific functional coating. Corrosion transformation, thermal obstructing, thermal reflecting and thermal emitting are reduced through conducting the rust protection processing for metal base plate. The coating material has the advantages of high reflectance for visible sunlight and near-infrared sunlight, strong radiation ratio in 8-13.5 mu m bands, low thermal conductivity coefficient, excellent temperature reduction effect in summers, thermal radiation property approximately to background in visible lights and infrared bands, excellent concealment effect and favorable corrosion property and the like.

The present invention provides novel N-substituted fluorooxindoles having the general Formula I wherein the wavy bond represents the racemate, the (R)-enantiomer or the (S)-enantiomer and m, n, p, q, A, B, D, Q, X, and Z are as defined below, or a nontoxic pharmaceutically acceptable salt or solvate thereof and are useful in the treatment of disorders which are responsive to the opening of potassium channels.

A non-permeable pipe connector structure, the design of which effectively prevents external material (such as vapor and miscellaneous substances, etc.) intrusion. To obstruct the intrusion of external matter into the pipe connector, a ball bearing holder is disposed at the pipe connector, enabling even greater ball bearing durability and, furthermore, free rotation. A protective flange is disposed as the bottom surface of the ball bearing holder such that when the coupling nipple and the connector base are fastened together, the protective flange effectively blocks external matter, thereby precluding entry to avert subsequent damage to the bearings. Furthermore, a rubber sealing ring sleeved onto the annular groove prevents vaporous or acid and alkaline substance intrusion into the bearings, and has safe defensive effectiveness.

The present invention generally relates to a system for blocking spam mail and a method of the same, and the system in accordance with the present invention, comprising: a Mail transceiver receiving the e-mail, temporarily storing the e-mail in a temporary storage for a set time after authentication mail is transmitted, and deleting the e-mail it a sender's response is not received within the set time, then transmitting the temporarily stored e-mail to mail accounts of recipients of a mail server if the sender's response is received within the set time; an authenticator list classifying and storing, according to each recipient, an e-mail address of the sender authenticated through the authentication mail and an e-mail address of a random sender registered by the recipients of the e-mail to receive the e-mail without authentication; and an authentication processor retrieving whether the e-mail address of the sender is included in the authenticator list, sending the authentication mail to the e-mail address of the sender if the e-mail address of the sender is not included in the authenticator list, and authenticating the sender according to the sender's access and response for the authentication mail.

Light generated at a specific wavelength corresponding to a particular color or color range that is distracting or disruptive to a driver during a normal operation is blocked through an inexpensive construction without blocking light in a required range of wavelengths. A projector is constructed such that a plurality of LEDs are arranged in an array configuration. The LEDs can include a tinge of red reduction LED and near-infrared LEDs. The projector can be installed in a vehicle and disposed in proximity to the camera. In some embodiments, the projector can be controlled by a control circuit to be turned on in conjunction with the shutter of a camera.