A radiation imaging apparatus includes an attenuation member for reducing reflection of components arranged on a backside of the radiation imaging apparatus generated by back scattered radiation that has reflected on a structure on the backside of the radiation imaging apparatus, the attenuation member being provided on the backside of the radiation incident plane of the radiation detection unit, wherein the attenuation member is made of a material with a higher atomic number and a material with a lower atomic number than a material with a highest atomic number among materials of the component, covers an end portion of an outer shape of the component overlapping the radiation detection unit in orthogonal projection onto the second plane, and is smaller in area than the radiation detection unit.

A thin film liquid cell suitable for transmission electron microscopy at room temperature is fabricated as follows. A thin film floating on a liquid is prepared. A droplet of the liquid with the thin film floating thereon is transferred to a support by means of a loop. The loop carries the droplet and the droplet carries the thin film during this transfer. Sufficient liquid from the droplet on the support is removed to form the thin film liquid cell.

The present invention discloses an in-situ monitoring method and apparatus for a power electronic device explosion. A power electronic device is excited to produce an explosion failure by using a fault excitation module. An electrical signal of the power electronic device is monitored in real time by using an electrical signal monitoring module. Gas information of a test cavity is monitored in real time by using a gas monitoring module. External pictures of the power electronic device are captured by using a high-speed image capturing module. Internal pictures of the power electronic device are captured by using a high-speed X-ray imaging module. Each module in the apparatus is triggered to work according to a predetermined time sequence and time interval by using a time sequence control module. The entire apparatus is controlled and data is acquired, stored, and displayed by using a main control module.

Systems and methods for robotic inspection of above-ground pipelines are disclosed. Embodiments may include a robotic crawler having a plurality of motors that are individually controllable for improved positioning on the pipeline to facilitate image acquisition. Embodiments may also include mounting systems to house and carry imaging equipment configured to capture image data simultaneously from a plurality of angles. Such mounting systems may be adjustable to account for different sizes of pipes (e.g., 2-40+ inches), and may be configured to account for traversing various pipe support structures. Still further, mounting systems may include quick-release members to allow for removal and re-mounting of imaging equipment when traversing support structures. In other aspects, embodiments may be directed toward control systems for the robotic crawler which assist in the navigation and image capture capabilities of the crawler.

Systems and methods for robotic inspection of above-ground pipelines are disclosed. Embodiments may include a robotic crawler having a plurality of motors that are individually controllable for improved positioning on the pipeline to facilitate image acquisition. Embodiments may also include mounting systems to house and carry imaging equipment configured to capture image data simultaneously from a plurality of angles. Such mounting systems may be adjustable to account for different sizes of pipes (e.g., 2-40+ inches), and may be configured to account for traversing various pipe support structures. Still further, mounting systems may include quick-release members to allow for removal and re-mounting of imaging equipment when traversing support structures. In other aspects, embodiments may be directed toward control systems for the robotic crawler which assist in the navigation and image capture capabilities of the crawler.

An X-ray high-absorptivity detection system and an image imaging method are provided. The system comprises a fluorescent layer, a light source for emitting X-rays towards the fluorescent layer, a first visible light sensor, a second visible light sensor, a first image acquisition device, a second image acquisition device. First visible photons moving towards the first visible light sensor and second visible photons moving towards the second visible light sensor are generated under the excitation of X photons; the first image acquisition device is configured for obtaining a first image signal by the first visible light sensor acquiring a first visible photon signal, and the second image acquisition device is configured for obtaining a second image signal by the second visible light sensor acquiring a second visible photon signal; an X-ray image signal is obtained by an addition operation on the two image signals.

A method includes introducing a fluidic sample into the void volume and onto the surface of a porous material, bringing the porous material into contact with a hydrophilic substrate compatible with a cryogenic Transmission Electron Microscope, separating the porous material from the substrate, and transferring a portion of the sample from the porous material to the substrate between their contact and separation.

A method includes introducing a fluidic sample into the void volume and onto the surface of a porous material, bringing the porous material into contact with a hydrophilic substrate compatible with a cryogenic Transmission Electron Microscope, separating the porous material from the substrate, and transferring a portion of the sample from the porous material to the substrate between their contact and separation.

The present invention discloses a quantitative evaluation method for sensitivity of welding transverse cold cracks in a typical joint of a jacket, including following steps: S1, performing macroscopic analysis, metallographic analysis, fracture analysis and hardness analysis on cracks of a failed component to obtain main causes of cold crack failure; and S2, designing and processing a dedicated sample, and performing rigid restraint crack tests on the dedicated sample at different preheating temperatures to obtain a cracking/non-cracking critical restraint stress σ1cr of the sample. According to the method, a rigid restraint crack test is applied to evaluation of sensitivity of welding transverse cracks, so that external restraint conditions borne by a welding joint can be accurately simulated, a stress state of the welding joint in an actual working condition can be truly reflected, the overall evaluation precision is greatly improved, and a foundation is laid for accurately evaluating sensitivity of welding cold cracks in a tube joint. Furthermore, a welding technology (base material, welding material, welding process and restraint level) is designed to restrain cold cracks from cracking, and the method has important theoretical significance and engineering value.

The present embodiments generally relate to methods of non-destructively imaging plant root damage by insect root herbivores and evaluating the efficacy of insecticidal materials associated with the roots of plants against the insect root herbivores, useful for automated high throughput bioassays.