33 results about "Oxygen" patented technology

The present plated member includes, on an outer surface, a plated film mainly composed of chromium deposited from a trivalent chromium bath containing at least chromium, carbon, and oxygen, in which the plated film contains 60 to 80 at % of chromium and 16.5 to 30 at % of carbon and has an indentation hardness of 7 GPa or more on the outer surface, and a degree of crystallinity calculated from a peak integrated intensity ratio of a measured value of X-ray diffraction measurement and the following expression (1) is 4% or less.

A method for activating an exposed layer of a structure including a provision of a structure including an exposed layer, a deposition of a layer based on a material of formula SiaYbXc, with X chosen from among fluorine F and chlorine Cl, and Y chosen from among oxygen O and nitrogen N, a, b and c being non-zero positive integers, a treatment of the layer SiaYbXc by an activation plasma based on at least one from among oxygen and nitrogen, the parameters of the deposition of the layer SiaYbXc being chosen so as to obtain a sufficiently low material density such that the layer SiaYbXc is at least partially consumed by the activation plasma.

The invention discloses a continuous flow method carbonate carbon and oxygen isotope determination method based on nitrogen instead of helium. The method comprises the following steps: carrying out nitrogen purging on a headspace bottle filled with a sample by using high-purity nitrogen carrier gas; the headspace bottle added with phosphoric acid for reaction is put into an automatic sample injector, and CO2-containing mixed gas to be detected is carried by high-purity helium carrier gas to be transferred in an analysis gas path; in the transferring process, target gas CO2 in the CO2-containing mixed gas to be detected is purified, and N2O generated in the ion source and N2 transmitted into the ion source by the helium carrier gas are diluted; the helium carrier gas carrying the target gas CO2 and the diluted N2O and N2 sequentially enters a gas isotope mass spectrometer for determination after passing through a continuous flow shunting interface, and a carbon and oxygen isotope test result of the target gas CO2 is obtained. According to the invention, the technical prejudice that only helium flow can be adopted for purging the headspace bottle in the prior art is overcome, the high-precision test result of the carbonic acid rock carbon and oxygen isotope can be obtained, and the test cost is reduced.

The invention discloses a grid side wall imaging method. The method comprises the steps that a semiconductor structure which has a grid and a first side wall which covers the side wall of the grid is provided; a polycrystalline carbon layer is prepared to cover the surface of the semiconductor structure; the polycrystalline carbon layer is partially removed, so that a second side wall of the grid is formed on the surface of the first side wall; after a source drain implantation process is carried out on the semiconductor structure, the second side wall is removed; and a source drain annealing technology is continued. According to the grid side wall imaging method provided by the invention, through oxygenated plasma treatment, a polycrystalline carbon side wall which is used as a main side wall can be neatly removed; without using an SPT process which needs to be carried out in a specific etching cavity, the problem of void in a high stress through hole etching stop layer process can be solved; a process flow is simplified; and the production cost is reduced.

The present invention provides a composite particle that can achieve both high silicon utilization and oxidation inhibition during water dispersion. The composite particle of the present invention is a composite particle having a particle containing carbon material and silicon, and a coating layer containing carbon and oxygen on the surface of the particle, and has a true density of 1.80 to 1.99 g / cm 3 In the Raman spectrum, a peak exists at 450 to 495 cm ‑1 If the intensity of the peak is I Si , and the intensity of the G band is I G , then I Si / I G is 1.3 or less, and in X-ray photoelectron spectroscopy, if the atomic ratios of Si, O, and C are A Si , A O , and A C , and the ratios of SiO2 and SiO are B SiO2 , B SiO , then A Si is 0.05 or more, and I Si / I G and A C / (A C +A Si ×(B SiO2 +B SiO )) have a prescribed relationship.

The invention discloses a method for identifying the producing area of saffron crocus by extracting saffron crocus aldehyde and measuring the stable isotope ratio of the saffron crocus aldehyde. The invention discloses a method for extracting crocetin from saffron crocus and measuring the stable isotope ratio of carbon to hydrogen to oxygen. The method comprises the following steps: S1, determining the stable isotope ratio of carbon to hydrogen to oxygen of a crocetin standard substance by using an elemental analysis-stable isotope mass spectrometer; s2, extracting crocus sativus aldehyde from the crocus sativus sample to obtain a crocus sativus aldehyde extracting solution; s3, determining the carbon, hydrogen and oxygen stable isotope ratio of crocetin in the crocetin extracting solution by using a gas chromatography-stable isotope mass spectrometer; and S4, calibrating the carbon, hydrogen and oxygen stable isotope ratio of crocetin in the crocetin extracting solution by adopting the carbon, hydrogen and oxygen stable isotope ratio of the crocetin standard substance. The standard substance is used for calibrating the stable isotope ratio of carbon, hydrogen and oxygen of the single compound crocetin, and the method can be used for identifying the producing area of crocetin.

The application discloses a kind of based on regularized non-negative least square method's production method carbon-oxygen ratio calculation method.There is following step: S1, obtains stratum common element and carbon-oxygen ratio logging instrument's inelastic gamma standard spectrum;S2, by carbon-oxygen ratio logging instrument to the stratum of place is measured, and the inelastic gamma mixed energy spectrum obtained by measurement is analyzed;S3, establish by each standard energy interval's inelastic gamma standard spectrum and inelastic gamma mixed spectrum count constitutes the contradictory linear equation group;S4, obtains the production of stratum carbon, oxygen element;S5, using the production of stratum carbon, oxygen element obtained in step S4 does ratio, obtains the production method carbon-oxygen ratio not by energy spectrum count statistics influence.The beneficial effect of the application is: improve the accuracy of production method carbon-oxygen ratio and the sensitivity of carbon-oxygen ratio to oil layer identification.

The invention provides an experimental method for determining stable carbon and oxygen isotopes by a two-way sampling method, and relates to the technical field of stable isotope analysis. The experimental method comprises the following steps: selecting carbon dioxide gas with the purity of more than 99.999% as carbon dioxide reference gas, and selecting a calcium carbonate carbon and oxygen isotope standard substance and a target sample to be measured; and then the stable carbon and oxygen isotopes are determined through a two-way sample introduction method, standard gas does not need to be purchased, the isotope ratio of a sample relative to a standard substance is obtained through conversion application of a formula, finally, the isotope ratio is successfully calibrated to the value of international standard PDB, and the experiment cost is saved. The method can be widely applied to other stable isotope two-way sample introduction methods, principle communication is achieved, and determination can be conducted through the experimental method under the condition that no standard gas exists.

The application discloses a heating path determination method for gas removal of an ultrahigh-temperature inert gas circulation system, and steps are as follows: establishing dynamic state variables of impurity gas in the system, system pumping capacity parameters and safety constraint conditions of refractory alloy during the gas removal process; establishing a coupling relationship between the impurity gas release rate and the system pumping capacity, and determining a main release temperature interval of the impurity gas; analyzing oxidation or oxygen permeation behaviors of the refractory alloy, determining a high-temperature sensitive temperature interval of the refractory alloy, and clarifying dynamic constraint conditions for entering the interval; and combining the main release temperature interval and the high-temperature sensitive temperature interval to determine an allowed trajectory of the system temperature changing with time during the gas removal process. The application combines the state of the impurity gas in the system and the oxidation or oxygen embrittlement risk of the refractory alloy under high-temperature conditions, realizes sufficient removal of the impurity gas in the system, avoids the impurity from entering the high-temperature interval in the high release stage, and thus reduces the risk of significant oxidation or oxygen embrittlement damage of the refractory alloy.

An object of the present invention is to provide an oxygen absorbing and releasing material and a manufacturing method thereof which improve oxygen absorbing and releasing capacity at low temperatures and ensure heat resistance. The oxygen absorbing and releasing material of the present invention contains ceria-zirconia-based composite oxide containing ceria (CeO2) and zirconia (ZrO2), the ceria-zirconia-based composite oxide containing praseodymium (Pr) or neodymium (Nd) as an additive element, at least a part of the ceria-zirconia-based composite oxide having at least one ordered phase of a kappa phase and a pyrochlore phase, 40% to 100% of primary particles having a particle diameter of 0.4 μm to 1.5 μm existing on a basis of the number of particles, an X-ray diffraction pattern being obtained by X-ray diffraction using CuKα after heating at a temperature condition of 1100°C for 5 hours in the atmosphere, an I(14 / 29) value calculated from the X-ray diffraction pattern being 0.015 or more, and an I(28 / 29) value being 0.08 or less.

This invention discloses a method and system for determining the explosion risk of transformer oil under the influence of an electric arc in an oxygen-deficient environment. The method includes: collecting free mixed gas generated in the oxygen-deficient space inside a transformer or oil-filled equipment under the influence of an electric arc or thermal fault; directly determining the composition and volume fraction of each component of the mixed gas using a Fourier transform infrared spectroscopy analyzer, wherein the components include at least methane, ethane, ethylene, and acetylene; calculating the lower and upper explosive limits of the mixed gas using the Richardley formula based on the volume fraction of each component; calculating the characteristic gas ratios C2H2 / C2H4 and C2H4 / C2H6, and determining the fault type according to a preset judgment logic based on the changing trend of the acetylene volume fraction; and comprehensively assessing the explosion risk level of the equipment by combining the explosion limits and the fault type. This invention replaces traditional chromatography with infrared spectroscopy analysis, eliminating the need for degassing and providing faster detection speed; it corrects the fault judgment logic using experimental data, compensating for the shortcomings of traditional guidelines under specific operating conditions; and it introduces explosion limit calculation to directly quantify the ease with which the gas can be ignited, providing more intuitive data support for explosion-proof safety.

Crystalline material containing oxygen, aluminum and phosphorus, exhibiting the powder X-ray diffraction peaks shown in the table below. 2 θ (°) d (nm) Relative intensity 8,65±0,2 1,022 1-15 9,99±0,2 0,885 1-15 14,17±0,2 0,625 100 16,52±0,2 0,537 5-80 17,37±0,2 0,511 1-15 21,81±0,2 0,407 10-80 22,44±0,2 0,396 2-15 24,66±0,2 0,361 15-70 26,11±0,2 0,341 10-80 28,56±0,2 0,313 5-40 29,80±0,2 0,300 3-30 33,17±0,3 0,270 1-20 34,93±0,3 0,257 1-15 36,21±0,3 0,248 2-15 39,02±0,3 0,231 1-10 43,44±0,3 0,208 1-10

A process (200) for the determination of 2-phase and 3-phase saturations using oxygen count rates obtained using a downhole tool (102). A 2-phase saturation measurement of gas and wet (oil-water) separation may be determined (210) using short space (SS) and long space (LS) oxygen count ratio and porosity. A 2-phase saturation measurement of oil and water-gas separation may be determined (214) using a normalized short space (SS) or long space (LS) oxygen count rate, and a short space (SS) and long space (LS) oxygen count ratio. The 2-phase saturation determinations may be combined to determine (216) a 3-phase determination.

The invention relates to a method for determining the concentration of an oxidizable gas component in an oxygen-containing gas mixture using a measuring device (50). The measuring device (50) comprises a sensor (60) which has a region that can be exposed to the gas mixture. The method involves the gas mixture flowing through a fluid path, such that initial time intervals, in which the gas mixture interacts with the oxidation catalyst before reaching the sensor (60), alternate with subsequent time intervals in which it does not. A differential signal is generated to determine the concentration of the oxidizable gas component.

The present invention provides a method for compressing a water-containing, oxygen-containing stream originating from an electrolytic cell, the method comprising at least the steps of: (a) providing a water-containing, oxygen-containing stream (10); (b) mixing the water-containing, oxygen-containing stream (10) provided in step (a) as a suction fluid in an ejector (2) with a water-containing stream (20) as a driving fluid, thereby obtaining a mixed stream; (c) flashing the mixed stream through the ejector (2), thereby obtaining a two-phase fluid (30) discharged from the ejector (2); (d) separating the two-phase fluid (30) discharged from the ejector (2) into an oxygen-containing gas stream (40) and a liquid stream (50); and (e) compressing the liquid stream (40) obtained in step (d). (f) using the pressurized liquid stream obtained in step (e) as the driving fluid (20) of step (b); (g) dehydrogenating the oxygen-containing gas stream (40) obtained in step (d), thereby obtaining a dehydrogenated oxygen-containing stream (70); (h) dehydrating the dehydrogenated oxygen-containing stream (70) obtained in step (g), thereby obtaining a dehydrated dehydrogenated oxygen-containing stream; (i) compressing the dehydrated dehydrogenated oxygen-containing stream (80) obtained in step (h), thereby obtaining a compressed oxygen-containing stream (90); and (j) using the compressed oxygen-containing stream (90) obtained in step (i), in particular in a gasifier (9).

An object of the present invention is to provide an oxygen isotope concentration method and an oxygen isotope concentration apparatus that can safely and stably supply ozone without increasing the size of the device. The present invention provides an oxygen concentration method including: a photoreaction step of irradiating a first mixed fluid (F 1) in which oxygen and a diluent substance (DS) are mixed with a laser, selectively decomposing ozone containing an oxygen isotope, and generating oxygen containing an oxygen isotope, and obtaining a second mixed fluid (F2) in which the oxygen, the ozone, and the diluent substance (DS) are mixed; a liquid storage section introduction step of introducing the second mixed fluid (F2) into a liquid storage section (10) and liquefying it; and a separation step of introducing the second mixed fluid (F2) with hydraulic head obtained by liquefying the second mixed fluid (F2) and storing it in the liquid storage section (10), into a separation column (21), distilling the second mixed fluid (F2) which has liquefied, and separating into a third mixed fluid (F3) in which ozone and the diluent substance (DS) are mixed, and product oxygen (PO) in which oxygen isotope heavy components are concentrated; wherein the liquid storage section (10) can store the liquefied second mixed fluid (F2) without being affected by heat input.

The invention provides a method for judging the source, formation time and cause of dolomite fluid, which comprises the following steps: determining age data of a dolomite sample, and judging the formation time of dolomite; respectively carrying out carbon and oxygen isotope determination and rare earth element determination on the dolomite sample, comparing the determination result with seawater data in the same period to obtain an analysis result, and judging the source of the diagenesis fluid by combining the analysis result of the carbon and oxygen isotope and the analysis result of the rare earth element; and determining the dolomite formation cause by combining the dolomite formation time and the diagenetic fluid source result. According to the judgment method provided by the invention, the dolomite cause can be quickly judged, the process is simplified, few testing means are used, time, manpower and material resources are greatly saved, and the problems of conclusion contradiction and uncertainty caused by adopting multiple judgment standards at the same time in the prior art are solved.

The present disclosure provides a method for separating iron element in brine and application thereof. The method for separating iron element in brine comprises: adding a pH adjusting agent to brine, to adjust pH of the brine to 6.0-7.0, and controlling the temperature of the brine to 75° C.-90° C.; introducing an oxygen-containing gas into the brine, to covert the iron element in the brine into magnetic iron oxide; and separating the magnetic iron oxide from the brine by magnetic adsorption to obtain an iron-removed brine.

The invention provides a chemical gas leakage detection early warning method and system, and belongs to the technical field of gas detection. The early warning method comprises the steps that the gas concentration, the oxygen concentration, the temperature, the humidity and the airflow velocity of target gas around a to-be-detected pipeline are obtained, and the target gas is gas in the to-be-detected pipeline; generating an initial gas concentration threshold value according to the environmental grade requirement and the historical data of the gas concentration; calculating a comprehensive environment deviation value according to the current temperature, the current humidity, the current airflow speed and corresponding historical data; calculating a dynamic correction gas concentration threshold according to the initial gas concentration threshold and the comprehensive environment deviation value; the current leakage degree is judged according to the current gas concentration, the current oxygen concentration, the current gas flow speed and the dynamic correction gas concentration threshold value; and executing early warning of different levels according to the leakage degree. According to the chemical gas leakage detection early warning method, the confidence coefficient of a gas leakage detection result can be effectively improved.

Disclosed are nanomaterials that are comprised of RxOyM1M2 clusters, where R is one or more lanthanides selected from La, Ce, Pr, Nd, Pm, Sm Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu, wherein O is oxygen and where M1 and M2 are metallic components selected from Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, or Cd, or a metal oxide of the foregoing transition metals.

A two-dimensional particle-containing composition that includes two-dimensional particles of a layered material having one or plural layers; and a dispersion medium having a relative permittivity greater than that of water. The one or plural layers comprise a layer body represented by: MmXn, wherein M is (1) at least one metal element M1 of Group 3, 4, 5, 6, or 7 having a higher ionization energy than Ti, or (2) a combination of the metal element M1 that accounts for 50 atom % or more of M and a metal element M2 of Group 3, 4, 5, 6, or 7 other than the metal element M1 that accounts for 50 atom % or less of M, and the two-dimensional particles have a fluorine element and an oxygen element.

The invention discloses a method for determining the maximum allowable temperature of an outlet of a coal mill and a related device. The method comprises the following steps: obtaining total moisture Mt of coal, as received basis ash content Aar, dry basis volatile component Vdaf, dry basis volatile component Vd, dry ash-free basis carbon Cdaf, dry ash-free basis hydrogen Hdaf, dry ash-free basis oxygen Odaf and dry ash-free basis low calorific value Qnet, daf; calculating a pulverized coal explosion index Kd; calculating a pulverized coal explosion index KKd; the highest calculation outlet temperature tM2j of the coal mill is calculated; determining the highest outlet allowable temperature tM2y of the coal mill of the coal sample according to tM2j; and determining the outlet temperature t2 of the coal mill according to the explosion-proof capability of the equipment and the control level of the coal as fired. The method has engineering application value according to the operation conditions of a large number of actual power plants and in combination with the pulverized coal explosion test result of a laboratory. On one hand, the economical efficiency of boiler operation is further improved on the basis that safe operation of the coal mill is guaranteed. And meanwhile, a rectification target is provided for a unit which does not reach a target control value in actual work.

An R-T-B based permanent magnet includes rare earth elements, transition metal elements, boron, and M. An amount of boron is within a range between 0.90 mass % or more and 1.00 mass % or less. An amount of carbon is within a range between 0 mass % or more and 0.10 mass % or less, an amount of oxygen is within a range between 0 mass % or more and 0.15 mass % or less, an amount of nitrogen is within a range between 0 mass % or more and 0.15 mass % or less, an amount of M is within a range between 0.30 mass % or more and 1.50 mass % or less, an amount of the rare earth elements based on mass represented by TRE is within a range between 29.00 mass % or more and 31.00 mass % or less, and a value represented by Pr / TRE is within a range between 0.30 or larger and 0.50 or smaller.

The present invention provides a two-dimensional particle-containing composition and a method for producing the two-dimensional particle-containing composition. [Solution] A two-dimensional particle of a layered material comprising one or more layers, and a dispersion medium having a relative permittivity greater than that of water, wherein the one or more layers are of the following formula: M m X n A two-dimensional particle-containing composition comprising a layer body represented by the formula (wherein M is at least one metal element M1 of groups 3, 4, 5, 6, or 7 having an ionization energy higher than Ti, or a combination of metal element M1 accounting for 50 atomic percent or more of M and metal element M2 of groups 3, 4, 5, 6, or 7 other than metal element M1 accounting for 50 atomic percent or less of M, X is a carbon atom, a nitrogen atom, or a combination thereof, n is between 1 and 4, and m is greater than n and 5 or less), and a predetermined modification or termination T present on the surface of the layer body, wherein the two-dimensional particles have fluorine and oxygen elements.

The present invention relates to a process for the capture of palladium from a gas stream comprising said palladium and oxygen, said process comprising contacting, at a temperature of at least 700 °C, said gas stream with an oxide component comprising or consisting of at least one oxide of formula A2O3, ABO3, DO or a combination thereof, wherein A is selected from the group consisting of rare earth elements and lanthanoids, B is selected from the group consisting of 3-5d elements and p-block elements and wherein D is selected from alkaline earth metals.

In a method for determining metallogenic potential of a porphyry by using trace elements and a B isotope of tourmaline, redox properties of magma is determined with Fe3+ / (Fe2++Fe3+) of tourmaline; then a water content and a content of metal Cu of the magma are determined with contents of H2O and Cu in the tourmaline; and a source of the magma is determined with a B isotope of the tourmaline, the water content, oxygen fugacity and metal content and source of the magma are finally determined, and finally, whether the magma has metallogenic potential of a porphyry is comprehensively determined. The present disclosure determines a key control factor of porphyry copper with a mineral of the tourmaline, and overcomes the difficulties in low efficiency, a long period and high cost of a traditional method for determining metallogenic potential.

The composition of the zirconium nitride-containing powder is represented by the following general formula (I). General formula (I): (Zr, X, Y) (N, O), wherein, in the above general formula (I), X represents at least one element selected from the group consisting of Dy, Er, Gd, Ho, Lu, Nd, Pr, Sc, Sm, Tb, and Tm, Y represents the element symbol of yttrium, the content of Y is 0 mol or more relative to the total content of Zr, X, and Y of 1 mol, N represents nitrogen, O represents oxygen, and the content of oxygen is 0 mol or more relative to the total content of nitrogen and oxygen of 1 mol.

Provided is a plated member having, on an outer surface, a plated film mainly composed of chromium formed using a trivalent chromium bath containing at least chromium, carbon, and oxygen, in which the plated film contains 60 at % or more of chromium and 1 at % to 30 at % of carbon and has an indentation hardness of 11.1 GPa or more on the outer surface, and a degree of crystallinity calculated from a peak integrated intensity ratio of a measured value of X-ray diffraction measurement and the following expression (1) is 5% or more.

The invention relates to a method for manufacturing a harmonic drive component (1), wherein the harmonic drive component (1) consists of a precipitation hardening steel, the method comprising the following steps: - providing a blank, the blank having the following composition: 0.01 to 0.35 wt.-% carbon, at most 0.15 wt.-% silicon, at most 0.4 wt.-% manganese, 4.5 to 5.5 wt.-% chromium, 4.5 to 6.5 wt.-% nickel, 0.5 to 1 wt.-% molybdenum, at most 0.6 wt.-% vanadium, 2 to 2.5 wt.-% aluminum, at most 0.008 wt.-% sulfur, at most 0.02 wt.-% phosphor, at most 0.025 wt.-% titanium, 0.005 to 0.015 wt.-% nitrogen, at most 0.007 wt.-% oxygen, at most 0.0035 wt.-% potassium, at most 0.015 wt.-% magnesium, and the remainder iron with unavoidable trace elements; - solution annealing the blank, wherein the solution annealing is carried out by heating the blank to a solution annealing temperature between 950 °C and 1050 °C or during a forging process at a temperature between 1000 °C and 1200 °C until the precipitation hardening components of the composition are dissolved; - cooling the blank to room temperature; - machining the blank to constitute the harmonic drive component (1); and - precipitation hardening the harmonic drive component (1) at a temperature between 450 °C and 650 °C for at least 30 minutes and at most 10 hours. Furthermore, the invention relates to a harmonic drive component (1) and to a harmonic drive (2).

Methods and systems for determining a carbon-to-oxygen (C / O) ratio within a formation are described. The methods and systems use a pulsed neutron tool conveyed within a borehole in the formation to measure gamma rays induced by inelastic scattering events between pulsed neutrons and elements within the formation. The resulting inelastic scattering spectra are treated to remove baseline counts arising from interactions occurring within scintillation materials of the detector and are then deconvolved using elemental standard spectra that are similarly detrended to remove baseline contributions.