337 results about "Radium" patented technology

A method of recovering daughter isotopes from a radioisotope mixture. The method comprises providing a radioisotope mixture solution comprising at least one parent isotope. The at least one parent isotope is extracted into an organic phase, which comprises an extractant and a solvent. The organic phase is substantially continuously contacted with an aqueous phase to extract at least one daughter isotope into the aqueous phase. The aqueous phase is separated from the organic phase, such as by using an annular centrifugal contactor. The at least one daughter isotope is purified from the aqueous phase, such as by ion exchange chromatography or extraction chromatography. The at least one daughter isotope may include actinium-225, radium-225, bismuth-213, or mixtures thereof. A liquid-liquid extraction system for recovering at least one daughter isotope from a source material is also disclosed.

A method of chemically extracting radium-228, rare earth metals, thorium, the decay products of thorium, and phosphates from thorium-containing ores. The method involves breaking thorium-containing ore into fragments, wetting the fragments with a concentrated strong acid to make a slurry, heating the slurry, passing the heated solution through a first anion exchange column, retaining metals and radium-228 captured on the resin, allowing the radium-228 ions to decay to actinium-228, purifying the actinium-228 fraction, sending the actinium-228 fraction through a capture column, eluting the captured thorium-228 with acid, removing radium from the solution, retaining the radium-228 fraction for isomer in-growth, retaining decay products from the radium-228, separating the REEs from the process stream; and eluting and retaining the REEs.

The invention relates to the field of water treatment, specifically to a method for removing metal ions from an aqueous solution by the use of hydrotalcite. The method provided by the invention comprises the step of removing metal ions from an aqueous solution by the use of hydrotalcite. The metal ions, which refer to heavy metal ions or radioactive substance ions, comprise one or more selected from the group consisting of mercury, chromium, lead, arsenic, cadmium, tin, copper and zinc heavy metal ions. The radioactive substance ions comprise uranium, thorium and radium ions. According to the invention, hydrotalcite is applied in metal ions-containing sewage processing, leading to high metal ion removing efficiency and obvious effects. In the meanwhile, raw material sources for the preparation of hydrotalcite are extensive, the cost is low, the preparation method is simple, energy consumption is low and the investment is also low. Therefore, the method provided by the invention has an extensive application prospect.

Methods and apparatus are disclosed for remediating metal contaminants using hydrocarbons which stimulate the growth of hydrocarbon-utilizing bacteria. The metal contaminants may include heavy metals such as arsenic, antimony, beryllium, cadmium, chromium, copper, lead, mercury, iron, manganese, magnesium, radium, nickel, selenium, silver, thallium and zinc. The hydrocarbon may include alkanes, alkenes, alkynes, poly(alkene)s, poly(alkyne)s, aromatic hydrocarbons, aromatic hydrocarbon polymers and aliphatic hydrocarbons. Butane is a particularly suitable hydrocarbon which stimulates the growth of butane-utilizing bacteria. Remediation may occur in-situ or ex-situ, and may occur under aerobic, anaerobic or dual aerobic / anaerobic conditions. Examples of applications include the remediation of heavy metals, the remediation of arsenic impacted surface water, groundwater and / or soil, the remediation of acid mine drainage, and the treatment of spent metal plating solutions.

A method for treating low barium frac water includes contacting a frac water stream with a radium selective complexing resin to produce a low radium stream, passing the low radium stream through a thermal brine concentrator to produce a concentrated brine; and passing the concentrated brine through a thermal crystallizer to yield road salt.

This invention relates to film layer earth flow measurement system, which is composed of water system independently slope earth area, earth flow and earth surface collection measurement system, wherein, the slope radium area forms water system with complete slope radium area; the radium flow down earth and rock or mother mass interface to establish earth flow measurement system; collection test whole radium area earth flow through flow test system to test earth flow to reflect slope flow match process and dynamic status.

The invention is a method for using the secondary laser method to generate the white light source, it uses light source which can emit out ultraviolet and purple light (wavelength is 360-420nm), such as the illuminant diode (LED) and radium (LD), excites the blue fluorescence powder to emit out the primary excited light spectrum of the wideband whose main peak is blue light, then, the primary excited light spectrum excites the yellow fluorescence powder whose stage energy is lower, the secondary excited light spectrum can be emitted out whose main peak is yellow, through adjusting the proportion of the two kinds of fluorescence powder, the primary excited light spectrum and the secondary excited light spectrum can generate the complementary effect, and generate the whole spectrum white light; additional, there also can add in the red fluorescence powder and the green fluorescence powder excited by the ultraviolet light or the purple light, in order to adjust the color and the color temperature of the white light, and it can adjust the light source of other different color.

The invention relates to a gamma energy spectrum-based method for identifying clay shale reservoir and uranium ore occurrence on the spot, which comprises the following steps that: rock debris in corresponding depth of drilling fluid is continuously sampled or a core acquired through the core drilling is sampled according to corresponding depths; the rock debris sample or the core sample is placed into a matched lead tank, and a gamma energy spectrum probe is used for measuring the rock debris sample or the core sample inside the lead tank; then counting rates and activity of uranium (U), radium (Ra), thorium (Th) and kalium (K) and a total gamma value are acquired according to the measurement result, so that the real content of U(Ra), Th and K in the rock can be calculated; and finally, a variation curve of the contents of U(Ra), Th and K is drawn according to the calculation results, and the clay shale reservoir and the uranium ore occurrence are identified according to variation characteristics of the curve. Gamma energy spectrum measurement and analysis on rock debris or the core which are acquired from the drilling are directly performed, so that the clay shale reservoir and the uranium ore occurrence can be rapidly identified and evaluated. The method is an economical and efficient method. The gamma energy spectrum measurement is performed on the drilling site, so that influence of an external environment on the rock sample can be avoided, and the accuracy of the measurement result can be guaranteed.

Methods and apparatus are disclosed for remediating metal contaminants using hydrocarbons which stimulate the growth of hydrocarbon-utilizing bacteria. The metal contaminants may include heavy metals such as arsenic, antimony, beryllium, cadmium, chromium, copper, lead, mercury, iron, manganese, magnesium, radium, nickel, selenium, silver, thallium and zinc. The hydrocarbon may include alkanes, alkenes, Aalkynes, poly(alkene)s, poly(alkyne)s, aromatic hydrocarbons, aromatic hydrocarbon polymers and aliphatic hydrocarbons. Butane is a particularly suitable hydrocarbon which stimulates the growth of butane-utilizing bacteria. Remediation may occur in-situ or ex-situ, and may occur under aerobic, anaerobic or dual aerobic / anaerobic conditions. Examples of applications include the remediation of heavy metals, the remediation of arsenic impacted surface water, groundwater and / or soil, the remediation of acid mine drainage, and the treatment of spent metal plating solutions.

A discharge mill technology using simple hollow long electrode is based on the numeral control technique and features use of simple hollow long electrode plus guider. The said electrode features simple cross-section, hollow structure for delivering liquid and high length-radium ratio (more than 3:1). Its advantages are high productivity to Ti-alloy, refrectory alloy and stainless steel.

Provided herein are systems and methods for use in wastewater treatment. In some examples, the systems and methods involve different combinations of ion exchange and membrane based systems and processes that can be used to remove radium and recover and purify barium and strontium salts to render the wastewater depleted of those regulated toxic metals. Treated wastewater having less than 12000 pCi / L of any of radium, barium or strontium is then subjected to tertiary treatment where it is subjected to processes in an evaporator / crystallizer which drives out water in the form of vapor, leaving behind salts of innocuous metals such as sodium, calcium, and magnesium, among others. In some examples, water vapor from the processes is condensed to produce water suitable for reuse, such as reuse in the hydro-fracturing process.

The invention provides a method for the treatment of soft tissue disease in a mammalian subject (preferably a human or canine subject), said method comprising administering to said subject a therapeutically effective quantity of a soft tissue targeting complex of thorium-227 and a complexing agent, wherein said quantity is such that an acceptably non-myelotoxic quantity of radium-223 is generated in vivo by nuclear decay of the administered thorium-227.

A multicolumn selectivity inversion generator separation method has been developed in which actinium ions, a desired daughter radionuclide, are selectively extracted from a solution of the thorium parent and daughter radionuclides by a primary separation column, stripped, and passed through a second guard column that retains any parent or other daughter interferents, while the desired daughter actinium ions and radium ions elute. This separation method minimizes the effects of radiation damage to the separation material and permits the reliable production of radionuclides of high chemical and radionuclidic purity for use in diagnostic or therapeutic nuclear medicine.

The invention discloses a modeling method for buddhist pines, which comprises the following steps: 1, selecting raw materials; 2, planting; and 3, modeling. When the method is used, the modeling time of the buddhist pines is reduced greatly, and with the branch and trunk encircling modeling of the branches and trunks, the bud parts on the tops of the tree branches are uniformly erected, so the plumpness of leaves is increased and secondary modeling in next year or the year after next year is avoided. Thus, the buddhist pines can be sold immediately when modeled. In the invention, the buddhist pines are naturally modeled, and various models such as refined model, water-side model and opened model are available. The model of each tree may vary with the raw material, so that the single form situation of a Yuanchuan school is changed. After being reconstructed by a root controller, the conveying radium of seedlings is greatly prolonged from the original 300 kilometers and the marketability of the goods is improved greatly.

This invention provides one total reflection projection optical system for object plane to form imaging plane, wherein the said system is divided into front and back sets to form hole diaphragm as symmetric surfaces; the front set comprises first to sixth lens with one to three lens form reverse distant structure; the back set orderly comprises seven to twelve lens symmetric to six to one lens about hole radium; the said whole reflection projection optical system all surface types are of sphere or plane without non-sphere surface.

A method of recovering daughter isotopes from a radioisotope mixture. The method comprises providing a radioisotope mixture solution comprising at least one parent isotope. The at least one parent isotope is extracted into an organic phase, which comprises an extractant and a solvent. The organic phase is substantially continuously contacted with an aqueous phase to extract at least one daughter isotope into the aqueous phase. The aqueous phase is separated from the organic phase, such as by using an annular centrifugal contactor. The at least one daughter isotope is purified from the aqueous phase, such as by ion exchange chromatography or extraction chromatography. The at least one daughter isotope may include actinium-225, radium-225, bismuth-213, or mixtures thereof. A liquid-liquid extraction system for recovering at least one daughter isotope from a source material is also disclosed.

A method of producing an isotope comprising directing electrons at a converting material coated with a coating material, the coating material having an atomic number of n, whereby interaction of the electrons with the converting material produces photons, and whereby the photons produced interact with the coating material to produce an isotope having an atomic number of n-1. In preferred embodiments, the converting material is Tungsten, the coating material having an atomic number of n is Radium-226, and the isotope having an atomic number of n-1 is Radium-225.

The invention discloses a system and method for determining the position and the coverage radium of APs (access points) of a WIFI (wireless fidelity) network. The system comprises WIFI network nodes and an upper layer system server 102, wherein the WIFI network nodes are used for receiving AP identifications from the APs and network identifications corresponding to the WIFI network to which the APs belong, and determining AP identifications corresponding to APs which do not belong to the WIFI network in the received AP identifications; the WIFI network nodes send position measurement requests to the determined APs corresponding to the AP identifications, and receive position information returned by the corresponding APs; the WIFI network nodes send the determined AP identifications, the network identifications corresponding to the WIFI network to which the APs belong and the position information returned by the corresponding APs to the upper layer system server 102; and the upper layer system server 102 is used for correspondingly recording the received AP identifications, the network identifications of the belonged WIFI network and the position information. According to the invention, the determination of the positions of the APs which do not belong to the WIFI network as well as the efficiency and the comprehensiveness of the coverage radium is improved.

By sequentially aligning various filtration media and delivery systems, enhanced synergistic reduction of water contaminants is obtained compared to the prior art or separate use of the individual media / filters. Specific filtration media are formulated with proper proportioning and sequencing to enhance the ability to reduce metals that cause staining, odors and bad taste such as iron, copper and manganese. Also disclosed is the reduction of potentially hazardous metal radionuclides metals such as uranium, iodine, cesium, plutonium and radium. Also disclosed is improved removal of heavy metals such as arsenic, lead, chromium, and mercury as well as organic compounds such as halogenated carcinogenic compounds. The present devices and methods remove specific bacteria and their toxins from water to reduce the risk of dermatitis. Thus, the present invention enhances our ability to achieving cleaner and safer water for drinking, swimming, washing, bathing and cooking.

The invention provides a method and device for optimum design of oil field gathering and transportation systems. The method comprises the following steps of: determining an initial position of a booster station according to a gathering and transportation radium, a number of oil wells under administration of the station, a station yard processing scale and a length sum of pipelines of the oil wellsunder the administration of the station yard; optimizing the initial position of the booster station according to the length sum of the pipelines of the oil wells under the administration of the station yard and a weighting coefficient, so as to obtain an optimized position of the booster station; determining an optimum topological form of a series pipe network according to the optimized positionof the booster station and positions of the oil wells, so as to ensure that the length sum of the pipelines of the oil wells under the administration of the station yard is the shortest; and determining pipe diameters and wall thickness parameters of the pipelines according to the optimum topological form. According to the method and the device, an objective method and theoretical basis are provided for the layout of stations of series pipe network gathering and transportation systems and the optimum design and planning of pipeline connection and parameters, so that the defects of subjectivejudgment relaying on personal experiences and habits are avoided, and benefit is brought to reduce construction investment and operation expenses of the gathering and transportation systems.

The invention discloses a multifunctional rare earth product radioactivity detecting instrument based on a composite detector. The instrument can be used for the radioactivity monitoring of the rare earth product, and comprises a composite detector, a signal conditioning module, a lead chamber, a multi-channel data collecting and analyzing module, a computer data analyzing and managing module, a power supply managing module with low power consumption, and the like, wherein the composite detector is formed by combing a detector for detecting alpha and beta total amount and a detector for detecting gamma energy spectrum into a whole. The instrument can be used for simultaneously measuring the alpha and beta total amount and the gamma energy spectrum, and can give the alpha and beta total amount and the contents of radium, uranium, thorium, potassium and rate earth self radioactive element through one-time measurement. The instrument can realize the function which is realized by several instruments and several measurements in the prior art through one-time measurement. The invention has broad applying prospect in the radioactivity detecting field of rare earth industry, and has the advantages of simple and reasonable structure, high price / performance ratio, low energy consumption, strong function, convenient use and the like.

The invention discloses a gradient-doped manganese iron oxalate precursor and a preparation method thereof. The chemical structural formula of the gradient-doped manganese iron oxalate precursor is Fe1-x-yMnx{M}yC2O4.2H2O, M is a doped element, the concentration of M outwardly increases from the center along the radium in a gradient manner, x is not lower than 0.4 and not greater than 0.9, and y is not lower than 0.02% and not greater than 5%. Gradient doping in a bulk phase in the invention realizes uniform mixing of iron and manganese atoms, and the concentration increasing gradient distribution of the doped element M from the core to the shell improves the ion conductivity, the electron conductivity, the cycle performances and the rate performance of the above material, and a new approach is provided for the large scale application of lithium manganese iron phosphate.

The invention provides a video semantic analysis method based on a self-adaption probability hypergraph and incremental semi-supervised learning. The video semantic analysis method based on the self-adaption probability hypergraph and the semi-supervised learning comprises the steps that (S1) a hypergraph model is established by means of a self-adaption probability hypergraph establishment method, (S2) the semi-supervised learning is conducted on the hypergraph model by means of the spectrogram segmenting principle, (S3) a semi-supervised model based on the self-adaption probability hypergraph is perfected by means of an increment mechanism, and (S4) semantic analysis is conducted on a tested video by means of the perfected hypergraph model. According to the video semantic analysis method based on the self-adaption probability hypergraph and the semi-supervised learning, the establishment of the self-adaption probability hypergraph and an incremental semi-supervised learning method are combined for use, the sensibility to a radium parameter when an ordinary hypergraph model is established is eliminated, and the accuracy and the robustness of the model are improved; in addition, under the incremental semi-supervised learning mechanism, semantic searching accuracy and semantic searching completeness are improved remarkably.

The invention discloses a route planning grid space partitioning method for an unmanned aerial vehicle. The route planning grid space partitioning method comprises the steps that firstly, the flying height and related maneuvering parameters of the unmanned aerial vehicle in the task executing process and the performance constraint parameters of a vehicle body in the flying process of the unmanned aerial vehicle are obtained; secondly, a safe flying speed passage of the unmanned aerial vehicle under the task flying height is obtained; thirdly, speed partitioning is carried out in the safe flying speed passage, the maximum flying speed is taken, the minimum turning radium and the three-dimensional grid unit length under the maximum flying speed are obtained, and whether a result meets the performance requirement or not is judged; fourthly, the three-dimensional grid unit length meeting performance constraints and the number of three-dimensional grids of a task scene are obtained. According to the route planning grid space partitioning method, grid partitioning meeting maneuvering performance constraints is carried out on the task scene in the task planning stage before high-speed flying of the unmanned aerial vehicle, the minimum turning radius of the unmanned aerial vehicle is determined before route planning, and the smooth processing step after route planning of the unmanned aerial vehicle is omitted.

This invention provides a producing method of high lever fatty acid lubricant, which consists of unfreezing the high lever fatty acid, adding the emulsifying agent, then the talked high lever fatty acid can be emulsified to translucence latex, next the dispersant is added into the solution to stable, and the alkali compound is added and mixed to react for 4-8 hours at 50-95deg.C, at last the producer is dispersed, homogenized to get the high lever fatty acid lubricant. The advantage of this invention not only has small particle radium and low viscidity, but also the stability is good and the usage volume is low. Because the particle radium of this invention is small, the contrast surface area is large, so during the high speed coating, the dope can disperse homely, the fluidity and even is good. It can effectively solve the draw of current stearic acid calcium lubricant.

The invention belongs to the technical field of magnetic powder and relates to flat magnetic powder and a preparation method thereof. The main phase of the magnetic powder is gamma'-Fe4N, the thickness of the powder is 0.1-9 micrometers, and the radium-thickness ratio is 10-200. The method includes: taking pure iron powder lower in hardness as a raw material, adopting the ball-milling method for flattening treatment, nitriding in a gas mixture of ammonia / hydrogen, and controlling technical parameters such as the thickness and the flatness of the powder by adjusting process conditions such as grain size and ball-milling time of the powder to realize control on electromagnetic performances such as cutoff frequency of the powder. The flat magnetic powder effectively reduces skin effect of a Fe4N material and is in favor of high-frequency application of the Fe4N material, and the preparation method is simple, flattening time is substantially lowered, production efficiency is improved, and control on micro-topography and the electromagnetic performances of the powder can be realized.

The invention discloses a supported catalyst for preparing dimethyl carbonate with urea and methanol. The catalyst is prepared from the following components by weight: 40%-75% of an alkaline earth metal modified MFI molecular sieve, 15%-30% of active metal oxide, and 10%-20% of phosphorus pentoxide; in the alkaline earth metal modified MFI molecular sieve, the weight of an alkaline earth metal accounts for 0.3-2% of the weight of the MFI molecular sieve; the MFI molecular sieve is a ZSM-5 molecular sieve preferably; the alkaline earth metal comprises beryllium, magnesium, calcium, strontium, barium or radium, and preferably magnesium or calcium; the active metal oxide is zinc oxide and / or cerium oxide. The catalyst can overcome the defects in the prior art that the equilibrium conversion rate is low and a homogeneous catalyst is not easy to separate in the technology of adopting urea and methanol to prepare dimethyl carbonate; the yield of dimethyl carbonate is high.

The patent refers to the field of 'compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals'. The invention belongs to the technical field of nanomaterials, and in particular relates to a method for synthesizing nano cerium oxide with different morphologies by a hydrothermal method. The method comprises the following steps of: 1) preparing aqueous solution of Ce(NO3).6H2O with concentration of 0.01 to 0.1mol / L at the room temperature; 2) adding H2O2, aqueous solution of cerium nitrate and an organic solvent into the solution to form mixed solution according to a volume ratio of 1:1-8:1-10, wherein the organic solvent can be volatized into gas at the reaction temperature and does not participate in the reaction; 3) placing the mixed solution into a high-temperature reaction kettle and reacting the mixture at the temperature of between 140 and 240 DEG C for 2 to 72 hours; and 4) pouring off upper solution after the reaction and adding ethanol for dispersion, wherein the nano cerium oxide is directly settled at the bottom of the reaction kettle. Because any surfactant is not added, and residues are not remained after hydrogen peroxide serving as an oxidant is added for reaction, the post-treatment process required by the conventional nano preparation process can be saved and the industrial application of the nanomaterial is dramatically promoted.

This invention discloses a design method for small femtosecond laser impulse stretcher used in regenerative amplifier high-dispersion material compensation, which belongs to the femtosecond impulse amplify technique. This method adopts concave spherical lens, convex spherical lens, grating and plane lens to design structure according to the phase Phi and grating position S1 of the stretcher. This method is characterized by the following: If the curvature radius of spherical lens is R, the distance between the grating and the concave spherical lens varies between zero to R; the convex spherical lens overlapped with the grating; if the stretching spectrum of the incidence light is larger than the lens width of the concave spherical lens, then it needs to reduce with equal proportion the curvature radium of the concave spherical lens and convex spherical lens and reduces the spectrum stretching width and keeps the original stretching degree.