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2670results about How to "Increase loss" patented technology
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Light-emitting device
ActiveUS20100096615A1Generate efficientlyEfficient use ofSolid-state devicesNanoopticsLight emitting deviceNitride semiconductors
A light-emitting device includes a group III nitride semiconductor layer of a multilayer structure consisting of a group III nitride semiconductor having a major surface defined by a nonpolar plane or a semipolar plane and having at least an n-type layer and a p-type layer. A surface of the group III nitride semiconductor layer on a light extraction side is a mirror surface. The light-emitting device may further include a transparent electrode in contact with the surface of the group III nitride semiconductor layer on the light extraction side. In this case, a surface of the transparent electrode on the light extraction side is preferably a mirror surface.
Owner:ROHM CO LTD
Circuitry for supplying electrical power to loads
ActiveUS20080088248A1Consumes spaceIncrease lossDc network circuit arrangementsDc-dc conversionMOSFETTransformer
A power supply, comprising a boost converter which provides voltage to a first load, and a flyback converter which provides voltage to a second load and which utilizes an inductive element of the boost converter as a primary winding of a transformer of the flyback converter. Also, a power supply comprising a MOSFET which is disposed between solid state elements and a second reference potential and which controls current flowing through the solid state elements. Also, a circuit comprising a transformer, a first circuit portion comprising the primary winding of the transformer and a second circuit portion comprising the secondary winding of the transformer. Also, a power supply comprising means for using a common transformer for providing a boost converter and a flyback converter. Also, a power supply comprising a transformer, means for providing a boost converter utilizing the transformer, and means for providing a flyback converter utilizing the transformer.
Owner:IDEAL IND LIGHTING LLC
Distributed underwater electromagnetic communication system
InactiveUS20070135044A1Speed up the descentIncrease lossNear-field transmissionElectric signal transmission systemsElectricityCommunications system
An extended underwater electromagnetic transducer is provided with an electrically insulated transmission line typically connected to a transmitter or receiver or transceiver system. The transmission line allows near-field communications with another transmitter or receiver or transceiver system. The transmission line provided is relatively long, the through water signal path length can be significantly reduced.
Owner:WIRELESS FIBER SYST
Agent satisfaction data for call routing based on pattern matching alogrithm
ActiveUS20100054452A1Reducing attritionLow costManual exchangesAutomatic exchangesPattern matchingContact center
Methods and systems are disclosed for routing callers to agents in a contact center with an intelligent routing system. An exemplary method includes routing callers to agents based on a pattern matching algorithm utilizing caller data and agent data, where the agent data includes agent satisfaction data from past agent-caller pairings. The agent satisfaction data may be obtained via surveys of the agents regarding their satisfaction with past agent-caller contacts. The agent satisfaction data may be used by the pattern matching algorithm in an attempt to increase agent satisfaction for future calls, thereby potentially reducing attrition of agents and cost to the call center, increasing morale of the agents, and so on. The agent satisfaction data and output from past agent-caller pairings may be weighted by the contact center against other agent data and caller data for a desired mixing of output variables.
Owner:AFINITI LTD
Light-emitting device
ActiveUS8017932B2High incidenceImprove the display effectSolid-state devicesNanoopticsLight emitting deviceNitride semiconductors
A light-emitting device includes a group III nitride semiconductor layer of a multilayer structure consisting of a group III nitride semiconductor having a major surface defined by a nonpolar plane or a semipolar plane and having at least an n-type layer and a p-type layer. A surface of the group III nitride semiconductor layer on a light extraction side is a mirror surface. The light-emitting device may further include a transparent electrode in contact with the surface of the group III nitride semiconductor layer on the light extraction side. In this case, a surface of the transparent electrode on the light extraction side is preferably a mirror surface.
Owner:ROHM CO LTD
Agent satisfaction data for call routing based on pattern matching algorithm
ActiveUS8781106B2Reducing attritionLow costManual exchangesAutomatic exchangesPattern matchingContact center
Methods and systems are disclosed for routing callers to agents in a contact center with an intelligent routing system. An exemplary method includes routing callers to agents based on a pattern matching algorithm utilizing caller data and agent data, where the agent data includes agent satisfaction data from past agent-caller pairings. The agent satisfaction data may be obtained via surveys of the agents regarding their satisfaction with past agent-caller contacts. The agent satisfaction data may be used by the pattern matching algorithm in an attempt to increase agent satisfaction for future calls, thereby potentially reducing attrition of agents and cost to the call center, increasing morale of the agents, and so on. The agent satisfaction data and output from past agent-caller pairings may be weighted by the contact center against other agent data and caller data for a desired mixing of output variables.
Owner:AFINITI LTD
Unconnected Motor, Drive Control Device Thereof, And Electric Power Steering Device Using Drive Control Device Of Unconnected Motor
InactiveUS20080067960A1Constant gainIncreased current consumptionMotor/generator/converter stoppersSynchronous motors startersElectric power steeringControl signal
A drive control device of an unconnected motor capable of resolving power shortage and increasing motor output without using a boost circuit, and an electric power steering device using the unconnected motor. The drive control device comprises an unconnected motor (12) having a rotor in which permanent magnets are allocated and a stator opposing the rotor, in which armature winding Lu to Lw of a plurality (N number) of phases are independently arranged, a pair of inverter circuits (34a, 34b) individually connected to both ends of each armature winding, and a drive control circuit (15) which drives the pair of inverter circuits (34a, 34b) with a predetermined number (e.g. 2N) of PWM drive control signals.
Owner:NSK LTD
Controlled isolation splitter apparatus and methods
ActiveUS20050289632A1Reduced isolation lossReduced isolationMultiple-port networksBroadband local area networksFrequency spectrumTerminal equipment
Apparatus and methods for controlled splitting and isolation of signals in a radio frequency network. In one embodiment, the network comprises a cable television network, and the apparatus comprises a signal splitter having controlled isolation loss at its output ports in at least one frequency band, thereby enabling communications between terminal devices at the subscriber premises that would otherwise be isolated by high losses typical of prior art splitters. The splitter apparatus can also be utilized with a filter / reflector circuit that advantageously provides maximal downstream frequency spectrum bandwidth while suitably reflecting the aforementioned communications to maintain them within the subscriber-side network without interference.
Owner:TIME WARNER CABLE ENTERPRISES LLC
Quantum key distribution
ActiveUS20130251145A1Improve network securityIncrease ratingsKey distribution for secure communicationKey distributionQuantum key distribution
Methods and apparatus for quantum key distribution are described, in particular including methods and networks 300 arranged to improve and / or ensure the security of data transmitted thereby by (i) ensuring a certain level of loss within at least part of the network, (ii) placing a penultimate and an endpoint nodes in situated in a secure second enclave, (iii) analysing a transmitted bit stream to ensure that it does not provide an unacceptable amount of information about the key that may be generated therefrom, and / or (iv) varying the order in which bits are used to generate a key.
Owner:QUBITEKK
Semiconductor device having diode-built-in IGBT and semiconductor device having diode-built-in DMOS
ActiveUS20090057832A1Increase lossTransistorLogic circuits characterised by logic functionSemiconductorSemiconductor device
A semiconductor device includes: a semiconductor substrate; a diode-built-in insulated-gate bipolar transistor having an insulated-gate bipolar transistor and a diode, which are disposed in the substrate, wherein the insulated-gate bipolar transistor includes a gate, and is driven with a driving signal input into the gate; and a feedback unit for detecting current passing through the diode. The driving signal is input from an external unit into the feedback unit. The feedback unit passes the driving signal to the gate of the insulated-gate bipolar transistor when the feedback unit detects no current through the diode, and the feedback unit stops passing the driving signal to the gate of the insulated-gate bipolar transistor when the feedback unit detects the current through the diode.
Owner:DENSO CORP
Vehicular power control apparatus
InactiveUS20070093359A1Not to damage safetyAvoid it happening againAC motor controlVector control systemsInstruction unitSwitching signal
A protection operation control part switches a gate signal interruption switch for protection of power elements to a gate signal interruption side, and invalidates a switching signal from a hybrid control unit to place transistors into a nonconducting operation. A motor current signal from a motor current detector is converted into a current value by a motor current calculation unit, and is inputted to a short-circuit abnormality detection unit through a motor control arithmetic part, and a short-circuit abnormality is detected. At a time of detecting the short-circuit abnormality, an internal combustion engine operation instruction unit gives an instruction to an internal combustion engine control unit so as to limit output of an internal combustion engine, and releases a conduction state of an abnormal motor current.
Owner:MITSUBISHI ELECTRIC CORP
Composite powder, magnetic powder core for magnetic powder and preparation method thereof
InactiveCN101118797AExcellent soft magnetic propertiesIncrease the amount of participationInorganic material magnetismInductances/transformers/magnets manufactureAl powderIron powder
The present invention provides a magnetic powder core, composite powder used for the magnetic powder core, and a production method for the both. The composite powder is blended and formed by powder A and powder B, the content of which comprises 50-96wt percent of the powder A and 4-50wt percent of the powder B; wherein, the powder A is one out of iron powder, Fe-Si powder, Fe-Si-Al powder, Fe-based nanometer crystal powder, Fe-base amorphous powder, Fe-Ni powder and Fe-Ni-Mo powder; the powder B has different demand characteristics compared with the powder A and is selected from at least one out of iron powder, Fe-Si powder, Fe-Si-Al powder, Fe-based nanometer crystal powder, Fe-based amorphous powder, Fe-Ni powder and Fe-Ni-Mo powder. The powder B can be Fe-based soft magnetic amorphous powder as the insulating agent, which can reduce the wastage of magnetic powder core and make up for the declining magnetic conductivity of magnetic powder core caused by the traditional insulating agent. The excellent of soft magnetic properties of the insulating agent is utilized to improve frequency features of the magnetic powder core.
Owner:ADVANCED TECHNOLOGY & MATERIALS CO LTD
Leakage source detecting device based on infrared thermal imaging processing
ActiveCN102636313ASolve the problem of difficult detection and positioningIncrease lossDetection of fluid at leakage pointEngineeringLeakage power
Owner:ZHEJIANG UNIV OF TECH
Centralized and networked protection system and method of a regional distribution network
InactiveUS20130262922A1Shortens successive blackout timeImprove power supply reliabilityEmergency protective arrangement detailsHardware monitoringEngineeringProtection system
The present invention relates to a centralized and networked protection system and method of regional distribution network, and belongs to the field of electrical system automation and relay protection. The protection system includes at least two centralized protection devices, an intelligent terminal and a communication network module, the centralized protection devices being communication with the intelligent terminal via the communication network module, the intelligent terminal being configured along with switching devices to distribute in each line section, for sampling data, backup protection and executing of tripping and closing commands, the centralized protection devices configured in the monitoring center of the regional distribution network, for generating differential protection elements based on the information sampled by the intelligent terminal and the topologic structure of the regional distribution network; and for determining the region where fault occurs and sending tripping and closing control commands.
Owner:XUJI GRP +1
An Optical System For Providing Short Laser-Pulses
InactiveUS20060209908A1High core diameterIncrease valueCladded optical fibreLaser using scattering effectsCost effectivenessPhotonic bandgap
The present invention deals with optical systems for providing short laser pulses. An object of the invention is to provide an optical system providing compact and cost-effective short laser-pulses using fibers with anomalous dispersion and high non-linear thresholds. The object is achieved by a short pulse optical system for generating or processing short laser-pulses, said optical system comprises an optical fiber in the form of a photonic crystal fiber arranged to provide guidance of light in the core region due to the photonic bandgap effect (PBG), where light propagates in a hollow or solid core surrounded by a Silica cladding comprising a substantially periodic distribution of micro-structural elements, and where the refractive index of the core is lower than the effective refractive index of the cladding. The invention may be useful in applications such as laser-based micromachining, thin-film formation, laser cleaning, in medicine and biology.
Owner:NKT PHOTONICS
Stable recombinant yeasts for fermenting xylose to ethanol
InactiveUS7527927B1Easy to keepIncrease lossFungiMicrobiological testing/measurementBiotechnologyXylitol dehydrogenase
Described are recombinant yeast which ferment xylose to ethanol and which maintain their ability to do so when cultured for numerous generations in non-selective media. The preferred yeast contain multiple copies of integrated genes encoding xylose reductase, xylitol dehydrogenase, and xylulokinase fused to promoters which are non-glucose inhibited and which do not require xylose for induction. Also described are preferred methods for integrating multiple copies of exogenous DNA into host cells by transforming cells with replicative / integrative vectors, and then replicating the cells a number of times under selective pressure to promote retention of the vector in subsequent generations. The replicated vectors thus serve to integrate multiple copies of the exogenous DNA into the host cells throughout the replication / selection phase. Thereafter the selective pressure can be removed to promote loss of the vector in subsequent generations, leaving stable integrants of the exogenous DNA.
Owner:PURDUE RES FOUND INC
High-frequency device
ActiveUS6998710B2Small sizeImprove featuresSemiconductor/solid-state device detailsSolid-state devicesAudio power amplifierSemiconductor
Owner:FUJITSU LTD
Plastic retaining type polyether assemblage carboxylic acid high-performance water reducing agent and preparation method thereof
The invention discloses a plastic retaining type polyether assemblage carboxylic acid high-performance water reducing agent and a preparation method thereof, mainly being applicable to the field of building materials. The water reducing agent is obtained in the following method: with the action of initiating agent, copolymerizing unsaturated polyalkyl ether monomer (A), unsaturated monocarboxylic acid and derivative monomer thereof (B), unsaturated dicarboxylic acid and derivative monomer thereof (C) and unsaturated sulfonic acid or salt monomer (D) in water solution for 2-8h at 50-80 DEG C and then reducing temperature to 35-45 DEG C, using alkaline solution to neutralize the mixture to a pH value of 5-7, thus obtaining the water reducing agent. The synthesized water reducing agent of the invention features changeable molecular structure, high water reducing ratio, high dispersion property under low dosage and fine slumps-retaining property, good adaptability to concrete raw material; in addition concrete with the water reducing agent added enjoys good peaceability; with the one-step method synthesis technology employed, the preparation method has the advantages of simple operation, low energy consumption in production and freedom from pollution.
Owner:CNBM ZHONGYAN TECH
Method for producing biocarbon-based slow-release nitrogen fertilizer
InactiveCN102424642ASimple preparation processIncrease lossClimate change adaptationAgriculture gas emission reductionSoil scienceClimatic warming
The invention discloses a method for producing a biocarbon-based slow-release nitrogen fertilizer, which is characterized by comprising the following steps: thermal cracking or gasifying corn straw, or apple tree waste branch, trunk and wood chip to obtain the biocarbon; mixing the biocarbon and an ammonium nitrate solution, or urea and the ammonium nitrate solution, fully stirring and drying, or adding a binder with 1-3% of total amount and sending to a granulation system for granulation, then drying to obtain the biocarbon-based slow-release nitrogen fertilizer product. The fertilizer has the advantages of simple and easy preparation technology, and low cost. The biocarbon-based slow-release nitrogen fertilizer contains 10-12% of nitrogen, the biocarbon carrier material is stable in soil, and is a good soil amendment and a carbon sequestration agent, soil is applied for improving soil fertilization, the nitrogen element of the nitrogenous fertilizer loaded by the biocarbon has slow-release effect, so that the loss of the nitrogen element can be reduced, the nitrogenous fertilizer utilization rate can be enhanced; the biocarbon can retain in soil for long-term to play the effects of carbon sequestration and carbon emission reduction, the biocarbon is helpful for alleviating climate warming, and biocarbon-based slow-release nitrogen fertilizer is a green fertilizer.
Owner:NORTHWEST A & F UNIV
Switching power supply circuit
InactiveUS20050068792A1Simple circuit configurationIncrease lossAc-dc conversion without reversalEfficient power electronics conversionEngineeringConductor Coil
A switching power supply circuit is disclosed which can achieve a high power conversion efficiency and besides achieve reduction of the circuit scale and the cost by simplification in circuit configuration. The switching power supply circuit includes a synchronous rectification circuit of the winding voltage detection system on the secondary side of a resonance converter. The coupling coefficient of an insulating converter transformer or the induced voltage level per one turn of the secondary winding is set so that the magnetic flux density of the insulating converter transformer may be lower than a fixed level thereby to maintain the secondary side rectification current in a continuous mode even in a heavy load condition. An inductor is inserted in series in a path along which rectification current is to be supplied to a secondary side smoothing capacitor so that reverse current appearing on the rectification current is suppressed by counter electromotive force generated in the inductor to further reduce the reactive power. A dc superposition characteristic of the inductor is set so that abnormal oscillation in a very light load condition (for example, 12.5 W or less) is prevented.
Owner:SONY CORP
Directional coupler and RF circuit module
InactiveUS20080070519A1Per unit area is increasedGenerate efficientlyResonant long antennasElectric pulse generatorCouplingGround plane
A directional coupler with a high coupling per unit area and small variations in characteristic at manufacturing capable of achieving a high directivity easily and an RF circuit module provided with the directional coupler are achieved. A main-line is provided on a front surface of a multi-layer substrate, a ground plane is provided on a back surface of the multi-layer substrate. On an inner layer immediately under the main-line, two lines in parallel with the main-line are provided, and one line is provided on a layer closer to the ground plane than the two lines. By connecting the two lines and the one line with vias, a sub-line with a shape of a winding of a loop is formed. In the sub-line, a main component of a vector vertically penetrating the loop is horizontal with respect to the ground plane.
Owner:RENESAS ELECTRONICS CORP
Multifunctional complex printer
InactiveCN101524912AControllable tensionHigh sensitivityTypewritersRotary pressesScreen printingLetterpress printing
The invention relates to a multifunctional complex printer. The multifunctional complex printer comprises a lifting device of a paper feed part. The multifunctional complex printer is characterized in that a corona device, a first AC servo tension detection device and a first cooling pull roll device are sequentially arranged at right side of a first deviation correction device, an intaglio printing unit is arranged above the corona device, the first AC servo tension detection device and the first cooling pull roll device, a first interchangeable hectograph unit, a second interchangeable hectograph unit, a third interchangeable hectograph unit, a fourth interchangeable hectograph unit, an interchangeable letterpress printing unit, an interchangeable screen printing unit and a first interchangeable flexography printing unit are sequentially arranged at the right side of the intaglio printing unit, a fourth AC servo tension detection device is arranged below a reserved platform of an inkjet device, and a second two-cylinder die cutting device, a back cutting device and a television monitoring camera are sequentially arranged at the right side of a first two-cylinder die cutting device. The multifunctional complex printer has the advantages of flexibly combining various printing modes according to pluralism of products and optionally exchanging printing modes of various color classes.
Owner:SHANGHAI XINMIN TAIYO KIKAI
Multimode organic filler/polymer composite damping material and manufacturing method thereof
InactiveCN103897287AImprove shock absorptionImprove heat and aging resistanceSound energyRelaxation effect
The invention relates to a multimode organic filter / polymer composite damping material and a manufacturing method thereof, relates to the field of soundproof materials, aims to solve the problems that in the prior art high efficient soundproof materials do not have a prominent effect, and generate harmful gas, which harms the human health; and provides a multimode inorganic filler / polymer composite damping material. The damping material comprises the following materials: thermoplastic resin and an inorganic filler, which has been subjected to a surface treatment with a coupling agent processing fluid; wherein the inorganic filter accounts for 15 to 80 wt% of the total weight of the damping material, and the balance being thermoplastic resin. In the damping material, the binding between each particle is abnormal, thus the internal friction between incident sound waves in this structure is effectively increased, thus a relaxation effect is generated, and the sound is absorbed. Fillers with different particle sizes are corresponding to sound waves in different bandwidths or frequencies, so sounds in different frequencies can all be absorbed by the damping material, and moreover the damping material has a good soundproof effect, and is suitable for promotion and application.
Owner:浙江艾迪雅科技有限责任公司
Microcapsule essence perfume for cigarettes as well as preparation method of microcapsule essence perfume
InactiveCN103451019AChemically stableNo pollution in the processTobacco treatmentEssential-oils/perfumesFlavorGlycerol
The invention discloses a microcapsule essence perfume for cigarettes as well as a preparation method of the microcapsule essence perfume. The microcapsule essence perfume contains the following raw materials in parts by weight: 1-3 parts of essence, 0.05-0.2 part of glycerinum or / and propylene glycol, 1-5 parts of wall materials and 0.01-0.03 part of emulsifier. The preparation method comprises the steps of: mixing essence, glycerinum or / and propylene glycol to obtain a mixture, evenly stirring the mixture, adding 95% ethanol with 1-10 times weight of the mixture, and mixing and evenly mixing to obtain a mixed solution; adding wall materials and emulsifier in the mixed solution and stirring for homogenization; and sealing, standing for 1-2 hours at normal temperature, refrigerating for 15-60 minutes at the temperature of minus 20 DEG C to minus 80 DEG C, drying for 8-24 hours at the vacuum degree of 30-80MPa and the temperature of 40-80 DEG C, grinding dried products, sieving the ground products to prepare microcapsule particles, thereby obtaining the microcapsule essence perfume for cigarettes. The perfume for cigarettes is made to microcapsules, so that perfume is free from being affected by external factors, and loss and fragrance distortion caused by volatile components in the perfume for cigarettes are effectively reduced.
Owner:HUBEI CHINA TOBACCO IND +1
Optical fiber with distributed bend compensated filtering
ActiveUS9322989B2No lossIncrease lossOptical fibre with graded refractive index core/claddingOptical fibre with multilayer core/claddingFiberRefractive index
An optical fiber includes a core region having a longitudinal axis. At least a portion of the core region has a substantially helical shape about a helical axis. The longitudinal axis may be substantially tangential to a helical bend in the optical fiber. A cladding region surrounds the core region. The core region and cladding region may be configured to support and guide the propagation of signal light in a fundamental transverse mode in the core region in the direction of the longitudinal axis. The fiber has a bend-induced gradient in its equivalent index of refraction over the portion of the core region. The fiber has a bend-induced equivalent index of refraction. At least a portion of cladding region has a graded refractive index opposite that of the bend-induced gradient. The cladding region may be configured to have a substantially flat equivalent index in response to a helical bend of the optical fiber.
Owner:OFS FITEL LLC
Method for augmenting B cell depletion
InactiveUS20050276803A1Good curative effectEnhance B cell depletionOrganic active ingredientsNervous disorderIntegrin antagonistBlood vessel
The present invention provides methods of augmenting B cell depletion by promoting intravascular access of B cell subsets sequestered in lymphoid tissues rendering the B cells sensitive to killing mediated by the B cell depleting agent. One method of promoting intravascular access is by the use of integrin antagonists. Methods of treating B cell disorders by this approach is also provided.
Owner:GENENTECH INC
Electronic pulse generator and oscillator
InactiveUS20030151465A1Avoid problemsIncrease lossDelay lines pulse generationSemiconductor/solid-state device detailsFall timeFrequency regulation
Improvements in and relating to electronic pulse generation or oscillation circuitry based on a signal path exhibiting endless electromagnetic continuity and affording signal phase inversion in setting pulse duration or half-cycles of oscillation within time of signal traverse of said signal path, and having active switching means associated with said signal path to set rise and fall times of each said pulse or said half-cycle of oscillation, including for frequency adjustment by selective inductance and power saving without stopping pulse generation or oscillation.
Owner:ANALOG DEVICES INC
Apparatus and method for controlling the state variable of an integrator stage in a modulator
ActiveUS7053807B1Increase lossIncrease capacitanceElectric signal transmission systemsAnalogue conversionCapacitanceDetector circuits
An apparatus for controlling the state variable of an integrator stage in a modulator including a detector circuit for generating an overload signal when the modulator is overdriven, a control circuit responsive to the overload signal for generating switching control signals during the overdriven condition, and an integrating capacitance circuit having an unswitched portion and a switched portion and responsive to the switching signals for repeatedly connecting the switched portion between the unswitched portion and a discharge path to receive and drain charge when the modulator is overdriven to increase the lossiness of the integrator stage and control a state variable of the modulator.
Owner:ANALOG DEVICES INC
Process and arrangement for superimposing ray bundles
InactiveUS20060065815A1Minimizing radiation lossLighter is very dangerousBeam/ray focussing/reflecting arrangementsMaterial analysis by optical meansSuperimpositionOptical axis
A process and an arrangement are described by means of which a plurality of ray bundles emitted from individual radiation sources are combined with the aid of an imaging optics system. The individual radiation sources are in this connection arranged on at least one curve surrounding the optical axis of the imaging optics system. The individual ray bundles are substantially linearly polarised. The bundles are reflected on their path to the superimposition point at least at a surface whose reflection capability is polarisation-dependent. The polarisation direction of the ray bundles coming from the individual radiation sources is in this connection aligned so that the first reflection at the surface takes place with low loss, whereas a possible second reflection after previous reflection at the workpiece takes place with high loss. In this way the individual radiation sources are protected against damaging back-reflections.
Owner:MYOS MY OPTICAL SYSTEM GMBH
Method of recovery copper, nickel and noble metal in waste water and slag by combined technology of wet method and fire method
A process for recovering the copper, Ni and noble metals from the sewage and dregs by the combination of wet method and fire method includes the wet process including extracting, Cu-Ni separation, removing Fe, extracting, and refining nickel carbonate, and the fire process including sintering and smelting to produce nickel matte and black copper. Its advantages are high recovery rate of Ni, Cu, Au, Ag and Pd, and no secondary pollution.
Owner:孙涛 +1
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