112results about How to "Protection from radiation damage" patented technology

The invention discloses a water purification ceramic material and a preparation method thereof, relating to a ceramic material. The invention provides a water purification ceramic material capable of releasing negative ions, radiating far infrared rays, resisting bacteria, removing residual chlorine, removing heavy metal and purifying water, and a preparation method thereof. Main components of the water purification ceramic material are tourmaline, copper oxide and iron trioxide. Auxiliary components of the water purification ceramic material are at least one of quartz, calcite, kaolin, feldspar, talc, zirconium oxide, titanium oxide, manganese dioxide, cobalt trioxide and the like. The preparation method comprises the following steps of: mixing the main components; then, mixing the mixedmain components with at least one of the auxiliary components; crushing; screening; ball-milling to obtain a mixture; then sintering to synthesize a spinel type copper oxygen body substrate material;crushing and ball-milling the spinel type copper oxygen body substrate material to form a substrate material; with at least one of copper salt, zinc salt, inorganic silver salt and rare earth metal as a metal source, dissolving the metal source in water to prepare a solution; adding the copper oxygen body substrate material to the solution and adsorbing to form a combination body; after sintering, introducing reducing gas; and forming to obtain the water purification ceramic material.

Aspects and embodiments of the instant disclosure provide therapeutic methods and compositions comprising interleukin 12 (IL-12) useful for treating radiation-induced damage in a subject. In particular, the instant disclosure provides methods and compositions for radiation protection and/or radiation toxicity mitigation for the treatment of acute radiation syndrome and radiation induced toxicity associated with the treatment of cutaneous T-cell lymphoma.

The focussing ultrasonic modulation reflection type optical chromatographic imaging method utilizes the focussing ultrasonic technique to make modulation and tissue location of the laser injected into deep biological tissue, and uses optical technique to make high-sensitivity detection and real-time high-speed. Fourier transform to process signal, and can obtain the chromatogram of pathologic changed tissue region. The injection laser mand modulation ultrasonic wave are coaxially-retained, and its signal exciting device and receiving device adopt homoside reflection mode. Said optical chromatographic imaging equipment is formed from laser, optical polarization component, ultrasonic component, photo-electric conversion component, signal display and real-time rapid Fourier transform module and computer.

Described herein is the surprising discovery that ketone bodies protect cell and tissues from ionizing radiation. Based on this finding, methods of protecting animal tissue and cells from damage caused by radiation exposure are disclosed which include, contacting the tissue with a therapeutically effective amount of an agent including at least one ketone ester, thereby protecting the tissue from radiation damage. Ketone esters can be used to minimize, reduce and/or prevent tissue damage following intentional and accidental radiation exposure, as well as increasing the therapeutic efficacy of radiation therapies by protecting non-target tissue from incidental radiation damage.

The invention discloses a novel opto-acoustic mammary gland imaging instrument which comprises a laser, a fiber bundle, a detection groove, a circular array detector, a data acquisition card and a processor, wherein the processor is connected with the laser and the data acquisition card; the laser is connected with the fiber bundle; the data acquisition card is connected with the circular array detector; a power mechanism for controlling the detection groove to rotate or/and rise and fall is also arranged below the detection groove, and the power mechanism is also connected with the processor; and an opening is formed in the top of the detection groove, and the fiber bundle and the circular array detector are respectively arranged on the inner wall of the opening of the detection groove. The novel opto-acoustic mammary gland imaging instrument has a high-resolution, high-contrast, accurate and real-time three-dimensional imaging function, has the lesion fixed point accuracy of lower than +/-0.5mm, and can be used for positioning micro-lesions, thereby increasing the accuracy of an operation part.

The invention discloses a system and a method for finding the position of a capsule endoscope in a nonmagnetic cavity through a magnet. The system comprises the capsule endoscope, a magnetic object, a data recorder and a driving device. The position of the capsule endoscope in the nonmagnetic cavity can be accurately found by means of mutual relations between the distance and angles of the external magnet object and the capsule endoscope in which the magnet is arranged in cooperation with the data recorder and the driving device without complex computation, radiation or damage, so that the trouble of failure in accurately positioning the conventional capsule endoscope in vivo is eliminated, and a foundation is laid for future high-quality reliable feedback control of the capsule endoscope.

The invention provides a wafer level packaging method and packaging structure for an image sensor. The packaging method comprises the steps that a first passivation layer is formed on the active face of a sensing wafer; at least one metal fan-out electrode is deposited on the first passivation layer; the active face of the sensing wafer and a transparent substrate are bonded; a second passivation layer is deposited on the back face of the sensing wafer, and a grooving mark is carved on the second passivation layer; grooves are formed in the grooving mark; a third passivation layer is manufactured on the back face of the sensing wafer; through holes penetrating through the metal fan-out electrodes are formed in the bottoms of the grooves; metal interconnecting wires are manufactured to guide the metal fan-out electrodes out to the back face of the third passivation layer through the through holes; a fourth passivation layer completely covering the metal interconnecting wires is manufactured; an opening is etched in the fourth passivation layer to expose one ends of the metal interconnecting wires; a UBM layer and soldering tin protrusions are manufactured on the fourth passivation layer. The wafer level packaging method and packaging structure are high in reliability, low in cost, small in signal delay and high in interconnecting density.

The invention relates to a method for determining the thickness of single-event sensitive volume of a device, which belongs to the fields of space radiation effects and reinforcement technology. The method comprises the steps of calculating deposited energy of laser in the sensitive volume, and generating single event effects when deposited charges of the laser in a sensitive volume unit of the device achieve or exceed the critical charges of the device, wherein the critical charges of the single-event effects under different pulsed laser wavelengths are the same; and the laser of a laser simulation system is used for inducing, obtaining energy threshold data of the single-event effects and further obtaining the thickness of the sensitive volume (Sv) of the single-event effects. The method has no radiation injury to the device and laboratory staff, very simple operation, low cost and capability of precisely measuring the thickness of the sensitive volume of the device.

The invention provides a multi-view stereoscopic vision body surface positioning tracking method. The multi-view stereoscopic vision body surface positioning tracking method comprises the following steps that S1, calibrating cameras in each group of vision assemblies; S2, performing simulation geometric reconstruction on the CT data: during reconstruction, retaining point cloud data and target point information of a body surface in the CT data, and simulating a spatial position of the CT point cloud data in a left camera coordinate system; S3, collecting body surface point cloud data through visual components on the two sides of the treatment bed; S4, projecting grating stripes to the surface of the human body by each group of structured light projectors, and modulating the phases of the grating stripes; Carrying out phase splitting by a computer; Obtaining three-dimensional information of the body surface; S5, fusing the point cloud data collected on the two sides of the body surface;And S6, performing three-dimensional accurate registration on the collected and fused body surface point cloud data and CT reconstructed body surface point cloud data. The multi-view stereoscopic vision body surface positioning tracking method has no radiation damage to human bodies and is low in equipment cost.

The invention provides a cushion compact with an anti-blue light effect. The cushion compact comprises an emollient, an active effect component and water serving as a solvent; the active effect component comprises an active effect component A accounting for 0.05 to 0.50 percent of the weight of the cushion compact and an active effect component B accounting for 0.50 to 2.0 percent of the weight ofthe cushion compact; the active component A comprises melanin, pentanediol and ethylhexylglycerin; the active effect component B comprises a cephalic branch cotyledon/stem extract, 1,3-propylene glycol and water. The cephalic branch cotyledon/stem extract and the melanin in the cushion compact are reasonably proportioned to protect the skin from being injured by radiation and control the physiological rhythm, so that cells are resynchronized and recover a normal rhythm; the cushion compact is extremely good in blue light preventing and repairing effects and has an extremely good blue light resisting effect. A preparation method provided by the invention is simple in process and low in cost; the prepared cushion compact with the anti-blue light effect is good in effect.

The invention relates to a fatty liver detecting system based on an ultrasonic attenuation coefficient, and belongs to the technical field of signal processing and liver attenuation coefficients. Thefat contents of livers of patients with different degrees of fatty liver are measured, a lower computer acquires an ultrasonic echo signal and uploads the ultrasonic echo signal to an upper computer,gain of an original signal is removed at first, then the signal is subjected to band-pass filtering to remove interference noises, a filter signal is subjected to envelope detection by hilbert transform, then the detected signal is subjected to logarithm transformation, after data are obtained, the data are subjected to smoothing filtering and down-sampling, all continuous points are subjected tolinear fitting to solve straight slope, finally, an attenuation coefficient which corresponds to the data is solved, in the calculating process, the fat content in the liver is measured by calculatingthe attenuation degree of the ultrasonic echo signal in human body liver fat, and the fatty liver detecting system based on the ultrasonic attenuation coefficient can be used for measuring the attenuation coefficient of liver tissues and detecting the degree of fatty liver.

The invention provides a clinical nutritional formula special for protein allergy. The nutritional formula special for protein allergy is prepared from the following components, by weight, 15-21 partsof protein and amino acids, 11-15 parts of fat, 52-57 parts of carbohydrates, 3.4-4.2 parts of dietary fiber, 1.2-1.8 parts of macroelements, 0.01-0.04 parts of microelements, 0.005-0.02 parts of fat-soluble vitamins, 0.1-0.3 parts of water-soluble vitamin, 0.005-0.11 parts of nucleotides, and 0.02-0.06 parts of natural plant compounds; the invention also provides a method for preparing the aboveclinical nutrition formula. The clinical nutrition formula has the advantage of improving the patient's body mass, enhancing immune function, relieving allergic symptoms and preventing allergic reactions of people with food protein allergies.

The invention provides a fluorescence nanometer probe for imaging and a preparation method thereof. The fluorescence nanometer probe for imaging possesses the structural formula shown as a formula (I), and the substance carries fluorophore. The preparation method for the probe comprises: reacting glucan with PNC to obtain Dextran-PNC; reacting Dextran-PNC with aminoethyl mercaptan to obtain Dextran-SH; reacting Dextran-SH with PDA to obtain Dex-SS-NH2; reacting activated deoxycholic acid with Dex-SS-NH2 under a room temperature condition to obtain Dex-SS-DCA; and dissolving Dex-SS-DCA and a fluorescence dye Cy7 in dimethyl sulfoxide, performing a reaction in the dark at room temperature, and then performing dialysis and freeze drying, so as to obtain Dextran-Cy7 powder. The probe possesses good biological compatibility, long detention time in SLN, high efficiency, high resolution, high light drifting resistance, no toxicity and innocuousness and other characteristics.

The invention discloses perovskite quantum dot scintillation microcrystalline glass and a preparation method thereof. The scintillation microcrystalline glass takes a CsPbBr3 quantum dot as a luminescence center and tellurate glass as a coating matrix, and the glass matrix of the scintillation microcrystalline glass comprises the following raw materials by mole: 50-95% of TeO2, 1-20% ofM2O3, whereinM = B, Al, Ga or In; 0 -20% ofZnO; 1-15% of CsBr; and 1-15% of PbBr2. Ag <+> is doped into the glass matrix to serve as a nucleating agent, and the molar ratio of the doping concentration of Ag < + > is 0.1-1%. The microcrystalline glass has the advantages of simple preparation process, easy realization of large-size preparation, high repeatability, adjustable chemical components, low melting temperature, excellent light stability, higher glass density and refractive index, and excellent high-energy ray cut-off capability, is helpful for realizing high signal-to-noise ratio radiation detection, and can be used for scintillation luminescent devices such as an X-ray dosimeter and the like.