914 results about "Flow ratio" patented technology

A method of operating a substrate processing chamber that includes, prior to a substrate processing operation, flowing a seasoning gas comprising silane and oxygen into said chamber at a flow ratio of greater than or equal to about 1.6:1 oxygen to silane to deposit a silicon oxide film over at least one aluminum nitride nozzle exposed to an interior portion of the chamber. Also, a substrate processing system that includes a housing, a gas delivery system for introducing a seasoning gas into a vacuum chamber, where the gas delivery system comprises one or more aluminum nitride nozzles exposed to the vacuum chamber, a controller and a memory having a program having instructions for controlling the gas delivery system to flow a seasoning gas that has an oxygen to silane ratio greater than or equal to about 1.6:1 to deposit a silicon oxide film on the aluminum nitride nozzles.

A method of operating a substrate processing chamber that includes, prior to a substrate processing operation, flowing a seasoning gas comprising silane and oxygen into said chamber at a flow ratio of greater than or equal to about 1.6:1 oxygen to silane to deposit a silicon oxide film over at least one aluminum nitride nozzle exposed to an interior portion of the chamber. Also, a substrate processing system that includes a housing, a gas delivery system for introducing a seasoning gas into a vacuum chamber, where the gas delivery system comprises one or more aluminum nitride nozzles exposed to the vacuum chamber, a controller and a memory having a program having instructions for controlling the gas delivery system to flow a seasoning gas that has an oxygen to silane ratio greater than or equal to about 1.6:1 to deposit a silicon oxide film on the aluminum nitride nozzles.

A method is for forming a nitride or oxide film by plasma-assisted cyclic deposition, one cycle of which includes: feeding a first reactant, a second reactant, and a precursor to a reaction space where a substrate is placed, wherein the second reactant flows at a first flow ratio wherein a flow ratio is defined as a ratio of a flow rate of the second reactant to a total flow rate of gases flowing in the reaction space; and stopping feeding the precursor while continuously feeding the first and second reactants at a flow ratio which is gradually reduced from the first flow ratio to a second flow ratio while applying RF power to the reaction space to expose the substrate to a plasma. The second reactant is constituted by a hydrogen-containing compound or oxygen-containing compound.

A method of etching silicon-containing material is described and includes a SiConi™ etch having a greater or lesser flow ratio of hydrogen compared to fluorine than that found in the prior art. Modifying the flow rate ratios in this way has been found to reduce roughness of the post-etch surface and to reduce the difference in etch-rate between densely and sparsely patterned areas. Alternative means of reducing post-etch surface roughness include pulsing the flows of the precursors and / or the plasma power, maintaining a relatively high substrate temperature and performing the SiConi™ in multiple steps. Each of these approaches, either alone or in combination, serve to reduce the roughness of the etched surface by limiting solid residue grain size.

In a process for the in situ blending of polymers comprising contacting ethylene and one or more comonomers in two or more fluidized bed reactors with a catalyst system comprising (i) a magnesium / titanium based precursor containing an electron donor and (ii) a hydrocarbyl aluminum cocatalyst, the improvement comprising (A) increasing or decreasing the melt flow ratio and / or molecular weight of the blend by, respectively, decreasing or increasing the mole ratio of a precursor activator compound to the electron donor or (B) increasing or decreasing the bulk density of the blend by, respectively, increasing or decreasing the mole ratio of a precursor activator compound to the electron donor, both (A) and (B) subject to defined provisos including partial pre-activation of the precursor.

An implementing mode of the invention provides an improved technology for depositing materials containing tungsten. The technology utilizes an infusion technology and a gaseous phase deposition technology, such as atomic layer deposition (ALD), to provide tungsten-containing materials with obviously improved surface evenness and yield. In one implementing mode, a method for forming tungsten-containing materials on a substrate is provided. The method comprises deposing a substrate, which contains a bottom coating deposited thereon, in a technological chamber; exposing the substrate orderly in a precursor of tungsten and reducing gases so as to deposit a tungsten nucleation layer on the bottom coating, during the ALD technology; and depositing a tungsten block layer on the tungsten nucleation layer. The invention is characterized in that the reducing gases comprise a hydrogen gas / hydride flow ratio of 40:1, 100:1, 500:1, 800: 1, 1000:1 or more, and comprise hydride such as diborane, silicane or silicoethane.

An apparatus is described for controlling flow of fluid in a tubular positioned in a wellbore extending through a subterranean formation. A flow control system is placed in fluid communication with a main tubular. The flow control system has a flow ratio control system and a pathway dependent resistance system. The flow ratio control system has a first and second passageway, the production fluid flowing into the passageways with the ratio of fluid flow through the passageways related to the characteristic of the fluid flow. The pathway dependent resistance system includes a vortex chamber with a first and second inlet and an outlet, the first inlet of the pathway dependent resistance system in fluid communication with the first passageway of the fluid ratio control system and the second inlet in fluid communication with the second passageway of the fluid ratio control system. The first inlet is positioned to direct fluid into the vortex chamber such that it flows primarily tangentially into the vortex chamber, and the second inlet is positioned to direct fluid such that it flows primarily radially into the vortex chamber. Undesired fluids, such as natural gas or water, in an oil well, are directed, based on their relative characteristic, into the vortex primarily tangentially, thereby restricting fluid flow when the undesired fluid is present as a component of the production fluid.

The present invention provides a method for prioritizing packet flows within a switching network. The method includes the steps of receiving packets at an input port, stamping the packets with an arrival time, and classifying the packet into a flow, wherein the flow is determined based upon at least a class of service of the packet, assigning the packet to a queuing ring according to the flow of the packet, and maintaining a flow ratio pending within the switch based upon the classification of the packet.

An ejector cycle system with a refrigerant cycle through which refrigerant flows includes an ejector disposed downstream of a radiator, a first evaporator that evaporates refrigerant flowing out of the ejector, a throttling unit located in a branch passage and depressurizes refrigerant to adjust a flow rate of refrigerant, and a second evaporator located downstream of the throttling unit. In the ejector cycle system, a flow ratio adjusting means adjusts a flow ratio between a first refrigerant flow amount depressurized and expanded in a nozzle portion of the ejector and a second refrigerant flow amount drawn into a refrigerant suction port of the ejector, based on a physical quantity related to at least one of a state of refrigerant in the refrigerant cycle, a temperature of a space to be cooled by the first and second evaporators, and an ambient temperature of the space.

A method of killing flying insects which method comprises spraying into the air in which insects are flying liquid droplets of an insecticidal composition, a unipolar charge being imparted to the said liquid droplets by double layer charging and charge separation during spraying, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least + / -1x10-4 C / kg. An aerosol spray device which is capable of imparting a unipolar charge by double layer charging and charge separation to liquid droplets of a composition sprayed therefrom has a spraying head in the form of an insert in an actuator, the spraying head having a bore through which liquid is expelled having an outlet, preferably with a tortuous periphery, having an L / a ratio of at least 8 (preferably at least 10) where L is the length of the periphery defining the bore outlet in mm and a is the cross-sectional area of the bore outlet in mm2 and the apparatus being constructed such that the droplets are expelled from the spraying head at a flow ratio of at least 0.4 (preferably at least 0.5) grams per second and have a charge to mass ratio of at least + / -1x10-4 C / kg.

Contemplated plants include a refluxed absorber and a distillation column, wherein the absorber is operated at a higher pressure than the distillation column to thereby produce a cryogenic pressurized lean gas. The lean gas is further compressed to a pressure suitable for liquefaction using energy from feed gas vapor expansion. Desired separation of C2 products is ensured by temperature control of the absorber and distillation column using flow ratios of various streams within the plant, and by dividing the separation process into two portions at different pressures.

A multilayer, thermoplastic stretch wrap film containing at least three polymeric film layers and comprised of a first layer and a second layer. The first and second layers may comprise a polymer of two or more monomers, wherein a first monomer is ethylene, in a major amount by weight, and a second monomer is an alpha olefin of from about 3 to about 12 carbon atoms, in a minor amount by weight. If the first and second layers are outer layers, they have a cling force to each other of at least about 140 grams / inch. The stretch wrap film also has at least one inner polymeric layer, located between the first and second layers. The inner polymeric layer comprises a low polydispersity polymer having a polydispersity of from about 1 to about 4, a melt index (I.sub.2) of from about 0.5 to about 10 g / 10 min., and a melt flow ratio (I.sub.20 / I.sub.2) of from about 12 to about 22. The inner layer(s) comprise(s) from about 5 wt. % to about 40 wt. % of the stretch wrap film so as to produce a film having a maximum stretch of at least 340%, a F-50 dart drop value of at least about 130 g / mil, a machine directional tear resistance of at least about 125 g / mil and a transverse directional tear resistance of at least about 500 g / mil. It is contemplated that additional outer layers may be added such an outer high cling layer or an outer slip layer, as well as additional inner layers.

The present invention generally comprises TFTs having semiconductor material comprising oxygen, nitrogen, and one or more element selected from the group consisting of zinc, tin, gallium, cadmium, and indium as the active channel. The semiconductor material may be used in bottom gate TFTs, top gate TFTs, and other types of TFTs. The TFTs may be patterned by etching to create both the channel and the metal electrodes. Then, the source-drain electrodes may be defined by dry etching using the semiconductor material as an etch stop layer. The active layer carrier concentration, mobility, and interface with other layers of the TFT can be tuned to predetermined values. The tuning may be accomplished by changing the nitrogen containing gas to oxygen containing gas flow ratio, annealing and / or plasma treating the deposited semiconductor film, or changing the concentration of aluminum doping.

The invention relates to a short-time forecasting method for a traffic flow based on a macroscopic road network model, which comprises the following steps: (1) obtaining the input flow of the source node of a road network at a forecasting period, extracting the average speed of each road section at a previous forecasting period and determining the flow ratio of different turning directions at each intersection; (2) calculating the time of vehicles running to the tail of a queued vehicle queue, which are input on a road so as to obtain the number of the vehicles arriving at the tail of the queue at an iterative period; (3) determining the number of the vehicles which are correspondingly turned to leave the intersections by the conditions of the number of the vehicles queued at the intersections, the saturated leaving flow and the like; (4) accumulating to obtain the total number of the vehicles leaving the intersections at one forecasting period and converting to obtain the traffic flow within the forecasting period; and (5) updating the number of the queued vehicles as known data for iterative forecasting at the next time. The short-time forecasting method for the traffic flow based on the macroscopic road network model aims at the defects that the adaptability of the road network is poor, a great deal of training data are needed, the operation quantity in a microscopic model is large and the like, which exist in the prior art. The spatial information of an urban road network is fully utilized. The short-time forecasting method for the traffic flow based on the macroscopic road network model is based on a macroscopic traffic flow model, and the forecasting of the traffic flow of a road with high accuracy and good real-time property can be realized. Moreover, the short-time forecasting method for the traffic flow based on the macroscopic road network model is suitable for most of urban road networks.

The internally air cooled turbine cast blade is molded with a ceramic core for defining the interior cavity with coolant passages where the ceramic core is configured to fair radially inwardly at the attachment portion of the blade until they form a single wall, parallel to and centered in the blade attachment. The blade is cast in the mold by pouring molten metal into the mold, curing and the core is leached once the metal is cured and the mold removed. Another embodiment includes a metering plate attached to the root of the blade for metering coolant to provide a coolant to gas flow ratio at the film cooling holes.

The invention discloses a coordination control method for a crossroad left-turning pre-signal and a straight-going successive signal, which comprises the steps that: a main signal lamp is arranged at first in the middle of a crossroad, left-turning pre-signal lamps are respectively arranged at first stop lines of four left-turning entrance lanes for left turning vehicles, straight-going successive signal lamps are respectively arranged in front of second stop lines of four exit lanes for straight-going vehicles; a main signal phase, a phase difference between the left-turning pre-signals and the straight-going successive signals, and a phase difference between the straight-going successive signals and the main signal are then configured, time allocation is prepared, the sum of key flow ratios of the phases is calculated, and the time for green light is finally allocated; according to the method disclosed by the invention, the contradiction in the aspect of time between the left-turning vehicles and the straight-going vehicles is thoroughly settled by means of the coordination control for the main signal, the pre-signals and the successive signals, thereby guaranteeing drive safety; the entire cycle for the coordination control only needs to be calculated once, which is fast and convenient, and the method effectively avoids that the adoption of traditional time allocation method is likely to lead to the jam of left-turning vehicles.

The invention discloses a method for predicting the influence of a heavy passenger flow of an urban rail transit network, which comprises the following step: (1) constructing an abstract model of the urban rail transit network; (2) generating a heavy passenger flow event; (3) setting the passenger flow ratio of a destination station / source station of a heavy passenger flow; and (4) analyzing the influence of the heavy passenger flow on the network. The method can be applied to the development of an urban rail transit network heavy passenger flow organization simulation system. The system can be used in an emergency handling center of the urban rail transit network to realize the automation and intellectualization of the analysis on the influence of the heavy passenger flow event and emergency handling. Meanwhile, the system is often used by an emergency handling department in a daily emergency monitoring process for simulating the handling process of the heavy passenger flow event anddeveloping the emergency handling capability of emergency handling personnel, and the system obtains good actual effect and enterprise benefit.

Ethylene copolymers having a relatively high melt flow ratio and a multimodal profile in a temperature rising elution fractionation (TREF) plot are disclosed. The copolymers can be made into film having good dart impact values and good stiffness properties under decreased extruder pressures.

The invention relates to a coal direct liquefaction method. It includes the following steps: mixing coal slurry which is made up of coal dust, hydrogenation cycle solvent, and iron catalyst with freshness or cycle hydrogen; reacting by the first and second reactor; sending the product from the second reactor to high temperature separator to separate; the weight flow ratio of the recycle and freshness materials is 2-20. The method can reduce hydrogen consumption and gas yield.

The invention which discloses a preparation method for metal / ceramic nanometer multilayer films with antibacterial and wear resistant surfaces relates to a preparation method for nanometer multilayer films and solves the problem of high cost and great difficulty in preparing wholly antibacterial materials and low wear resistance of surfaced treated antibacterial materials. The method comprises the following steps: a magnetron sputtering method is adopted, the background vacuum degree is 10<- 4> to 10<- 2> Pa; sputtering against targets in the conditions of the gas flow ratio of 2 to 17:1 of argon to one gas of the three gases of nitrogen, acetylene or methane, total air pressure of 0.1 - 1.0Pa, magnetron sputtering currents of 0.2 - 50A, voltage of 300 - 600V, substrate bias voltage of minus 50 to minus 400V and deposition temperatures of 80 - 400 DEG C. The nanometer ceramic / metal multilayer films prepared by the invention have good wear resistance and the antibacterial rate of more than 95 percent; the invention has the advantages of no pollution, low cost, easy realization and good industrial application prospects.

The disclosed ZnO impurity barrier layer and electrical isolation layer on metallic substrate is suitable to flexible photo-volt battery. Using pure zinc target or ZnO ceramics target etc, through sputtering technique, the invention deposits ZnO thin film on metal substrate. Adjusting flow ratio between Ar and O2 obtains ideal ZnO film. The ZnO film with compact structure of thin film possesses better effect for blocking off impurity inside metal substrate, and better effect of insulation. The disclosed ZnO is in use for preparing batteries and subassembly with flexible metal substrate.

An oxide and an oxynitride films and their methods of fabrication are described. The oxide or the oxynitride film is grown on a substrate that is placed in a deposition chamber. A silicon source gas (or a silicon source gas with a nitridation source gas) and an oxidation source gas are decomposed in the deposition chamber using a thermal energy source. A silicon oxide (or an oxynitride) film is formed above the substrate wherein total pressure for the deposition chamber is maintained in the range of 50 Torr to 350 Torr and wherein a flow ratio for the silicon source gas (or the silicon source gas with the nitridiation source gas) and the oxidation source gas is in the range of 1:50 to 1:10000 during a deposition process.

An information recording medium has an excellent jitter characteristic with a considerable difference in reflectance between prior to and subsequent to recording. The information recording medium includes a recording layer which contains a material having a reflectance which varies by irradiation of a light beam, on which information is recorded as reflectance variations, and a substrate for supporting the recording layer, the recording layer including a metal nitride as a major component. In a method of manufacturing the information recording medium having a recording layer which includes a material having a reflectance which varies by irradiation of a light beam, on which information is recorded as reflectance variations, and the substrate for supporting the recording layer, the recording layer including a metal nitride as a major component, the method includes a recording layer forming step for forming the recording layer by a reactive sputtering method which uses a target comprised of a metal constituting a metal nitride, wherein a flow ratio Ar:N2 in an atmosphere including Ar and N2 in the recording layer forming step is set within the range of 80:10 to 10:80.