Abstract: A circuit board structure includes a circuit substrate having opposing first and second sides, a redistribution structure disposed at the first side, and a dielectric structure disposed at the second side. The circuit substrate includes a first circuit layer disposed at the first side and a second circuit layer disposed at the second side. The redistribution structure is electrically coupled to the circuit substrate and includes a first leveling dielectric layer covering the first circuit layer, a first thin-film dielectric layer disposed on the first leveling dielectric layer and having a material different from the first leveling dielectric layer, and a first redistributive layer disposed on the first thin-film dielectric layer and penetrating through the first thin-film dielectric layer and the first leveling dielectric layer to be in contact with the first circuit layer. The dielectric structure includes a second leveling dielectric layer disposed below the second circuit layer.

Abstract: A wipe sampling device of radioactive contaminants on surface of spent nuclear fuel storage canisters is revealed. The wipe sampling device of radioactive contaminants takes samples from the storage canister to get at least one sample for monitoring radioactive contamination on the surface of the canister. The sampling device mainly includes a sample stick and a tube. The sample stick disposed in the tube is used to take samples from the surface of the canister. The wipe sampling device of radioactive contaminants on surface of the canister provides an effective sampling method for remote detection of canister contamination and ensures accuracy and representation of the detection results.

Abstract: A wipe sampling device of radioactive contaminants on surface of spent nuclear fuel storage canisters is revealed. The wipe sampling device of radioactive contaminants takes samples from the storage canister to get at least one sample for monitoring radioactive contamination on the surface of the canister. The sampling device mainly includes a sample stick and a tube. The sample stick disposed in the tube is used to take samples from the surface of the canister. The wipe sampling device of radioactive contaminants on surface of the canister provides an effective sampling method for remote detection of canister contamination and ensures accuracy and representation of the detection results.

Abstract: The invention is related to a turbulence device used for air filtration system. The turbulence device comprises a porous plate and a spoiler. The porous plate has a plural number of holes located on one side of the spoiler. The spoiler has a square hole. The turbulence device in the invention is used for an air filtration system and its testing to increase even mixing of the air and a plural number of fine particles in the air and increase the efficiency for the air filtration system. In the testing of the air filtration system, even mixing of the air and the fine particles can improve the accuracy of the air filtration system and avoid the use of unqualified air filtration system to harm the environment.

Abstract: The invention is related to a turbulence device used for air filtration system. The turbulence device comprises a porous plate and a spoiler. The porous plate has a plural number of holes located on one side of the spoiler. The spoiler has a square hole. The turbulence device in the invention is used for an air filtration system and its testing to increase even mixing of the air and a plural number of fine particles in the air and increase the efficiency for the air filtration system. In the testing of the air filtration system, even mixing of the air and the fine particles can improve the accuracy of the air filtration system and avoid the use of unqualified air filtration system to harm the environment.