Abstract:
Effective radiation shielding is required to protect crew and equipment in various fields including aerospace, defense, medicine and power generation. Light elements and in particular hydrogen are most effective at shielding against high-energy particles including galactic cosmic rays, solar energetic particles and fast neutrons. However, pure hydrogen is highly flammable, has a low neutron absorption cross-section, and cannot be made into structural components. Nanocomposites containing the light elements Boron, Nitrogen, Carbon and Hydrogen as well dispersed boron nano-particles, boron nitride nanotubes (BNNTs) and boron nitride nano- platelets,in a matrix, provide effective radiation shielding materials in various functional forms. Boron and nitrogen have large neutron absorption cross-sections and wide absorption spectra. The incorporation of boron and nitrogen containing nanomaterials into hydrogen containing matrices provides composites that can effectively shield against neutrons and a wide range of radiation species of all energies without fragmentation and the generation of harmful secondary particles.
Abstract:
A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.
Abstract:
A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.
Abstract:
본 발명은 납이 아닌 방사선의 차폐가 가능한 조영제로 이루어진 차폐구를 이용해 전산화단층촬영(CT) 검사 또는 일반 촬영검사, 투시 검사와 같은 의료 영상 검사시에 여성의 유방이나 갑상선, 수정체, 생식선과 같이 방사선 민감도가 높은 환자의 표재성장기가 효과적으로 방호 될 수 있고, 스트릭 아티팩트(streak artifact : 방서선 흡수율 차이로 인한 인공음영 발생으로 인해 영상판독에 어려움을 겪는 현상) 영상을 최소화함으로써 정확한 판독이 가능하며 조영제 패드가 신체 굴곡에 의해 일부가 꺾이는 등의 변형이 방지되도록 그 내, 외부에 심재와 필름부재가 이중으로 구비되고 조영제에 젤라틴과 같은 경화제가 더 포함되어 있어 신체의 굴곡면에 위치된다 하더라도 항시 일정한 두께로 유지될 수 있는 조영제를 이용한 일차 방사선 차폐구에 관한 것이다. 본 발명의 바람직한 일 실시예에 따른 조영제를 이용한 일차 방사선 차폐구는 내부에 조영제가 충전된 조영제 패드와, 상기 조영제 패드의 저면에 부착되어 상기 조영제 패드를 신체 부위로부터 소정간격 이격시키는 간격유지부재와, 상기 간격유지부재의 저면에 구비되어 상기 간격유지부재를 신체상에 위치고정시키는 점착수단이 포함되는 것을 특징으로 한다.
Abstract:
In one embodiment, a protective shield for a spectrometer is provided. The shield includes a body configured to substantially protect a front of the spectrometer, the body including an aperture that includes a protective mesh. The protective mesh includes a high-strength, low-Z material, such as an arrangement of carbon fibers. A method of fabrication, a spectrometer and a method of using the spectrometer are disclosed.
Abstract:
Wearable radio-opaque shields may be formed from relatively low-cost materials, which may include a non-toxic radio-opaque material. The use of such materials may render the wearable radio-opaque shields suitable for limited use or even for single use. The useful life of a wearable radio-opaque shield may be extended, and hygiene improved, by way of a liner configured for assembly with the wearable radio-opaque shield. Methods for using and disposing of wearable radio-opaque shields and liners are also disclosed.
Abstract:
Method to make radiopaque a reinforcing fabric made of elastomeric material comprising non-metallic reinforcing cords, said method comprising the following stages: (a) rendering said cords radiopaque by means of at least one radiopaque compound; (b) enclosing said cords in said elastomeric material. Preferably, said reinforcing fabric is used in a tyre for vehicle wheels.
Abstract:
An apparatus for a nuclear detector of a downhole tool and method of manufacturing the apparatus is disclosed. The apparatus includes a single multi-metallic component manufactured using additive manufacturing, wherein the component includes at least a first material having a first density and a second material having a second density. The method includes using additive manufacturing to form the component so that the component includes at least a first material having a first density and a second material having a second density and the first material and the second material form the single multi-metallic component.
Abstract:
The present invention relates to a method for reducing a flow of soil air to the indoor air in a building (1), wherein the building comprises at least one wall (2), which wall comprises a permeable channel (23) connected with soil air, wherein the method comprises achieving a flow stop (24) for the soil air in the permeable channel (23). The invention also pertains to a device to reduce the flow of soil air to indoor air in a building (1).