Abstract: A high-pressure gas filling and unloading system has a high-pressure gas pipeline for connecting to a gas filling station, a displacement gas pipeline for gas displacement, a plurality of double-channel rotating joints provided in said high-pressure gas pipeline and configured to be rotatable under pressure, and a filling and unloading joint provided at a free end of said high-pressure gas pipeline and comprising a control mechanism. The filling and unloading joint is configured to form a displacement working channel or a filling and unloading working channel therein through the control mechanism. The control mechanism is configured to alternately open the displacement working channel and the filling and unloading working channel, so that the displacement working channel is in communication with the displacement gas pipeline for gas displacement, or the filling and unloading working channel is in communication with the high-pressure gas pipeline for filling and unloading of high-pressure gas.

Abstract: A high-pressure gas filling and unloading system has a high-pressure gas pipeline for connecting to a gas filling station, a displacement gas pipeline for gas displacement, a plurality of double-channel rotating joints provided in said high-pressure gas pipeline and configured to be rotatable under pressure, and a filling and unloading joint provided at a free end of said high-pressure gas pipeline and comprising a control mechanism. The filling and unloading joint is configured to form a displacement working channel or a filling and unloading working channel therein through the control mechanism. The control mechanism is configured to alternately open the displacement working channel and the filling and unloading working channel, so that the displacement working channel is in communication with the displacement gas pipeline for gas displacement, or the filling and unloading working channel is in communication with the high-pressure gas pipeline for filling and unloading of high-pressure gas.

Abstract: A hydrogen leakage detecting material, and a preparation method therefor and the use thereof are provided. The hydrogen leakage detecting material has a color-changing substrate and an active component. The color-changing substrate is hexagonal-phase tungsten trioxide having a microstructure of a nanorod bundle formed by multiple nanorods, and the active component is noble metal nanoparticles. A starting reduction temperature of the hydrogen leakage detecting material on hydrogen is less than or equal to 100° C. The hydrogen leakage detecting material has a relatively high sensitivity to hydrogen under different conditions, and has significant color change and a shorter color change response time.

Abstract: A deuterated compound having the structure of Formula I: or a pharmaceutically acceptable salt, solvate, or prodrug thereof; or a salt of a prodrug thereof; or a hydrate or polymorph thereof; wherein Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, Y9?, Y10, Y10?, Y11, Y11?, Y12, Y12?, and Y13 are selected from the group consisting of hydrogen or deuterium, wherein at least one of Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, Y9?, Y10, Y10?, Y11, Y11?, Y12, Y12?, and Y13 is deuterium; and wherein each carbon is independently optionally replaced with 13C is disclosed herein. Pharmaceutical compositions comprising the compounds of Formula (I) and the use of the compounds as inhibitors of the enzyme poly ADP ribose polymerase (PARP) for the treatment of patients with BRCA-mutation positive ovarian cancer and BRCA-positive breast cancer is also disclosed herein.

Abstract: A deuterated compound having the structure of Formula I: or a pharmaceutically acceptable salt, solvate, or prodrug thereof; or a salt of a prodrug thereof; or a hydrate or polymorph thereof; wherein Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, Y9?, Y10, Y10?, Y11, Y11?, Y12, Y12?, and Y13 are selected from the group consisting of hydrogen or deuterium, wherein at least one of Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Y9, Y9?, Y10, Y10?, Y11, Y11?, Y12, Y12?, and Y13 is deuterium; and wherein each carbon is independently optionally replaced with 13C is disclosed herein. Pharmaceutical compositions comprising the compounds of Formula (I) and the use of the compounds as inhibitors of the enzyme poly ADP ribose polymerase (PARP) for the treatment of patients with BRCA-mutation positive ovarian cancer and BRCA-positive breast cancer is also disclosed herein.

Abstract: A fan structure including a hub and at least one blade. The hub includes a top section, an annular section and at least one first connection section. The first connection section is selectively disposed on the top section or the annular section. One end of the annular section is connected with a circumference of the top section to define a receiving space. The blade has at least one second connection section disposed at one end of the blade. The second connection section is complementary to the first connection section and connected thereto. The blades are positioned in an overlapping pattern. The blades are independently formed and are easier to manufacture. Therefore, the manufacturing process of the fan structure is simplified and the manufacturing cost is lowered. Moreover, the wind power of the fan structure is increased.

Abstract: A fan structure including a hub and at least one blade. The hub includes a top section, an annular section and at least one first connection section. The first connection section is selectively disposed on the top section or the annular section. One end of the annular section is connected with a circumference of the top section to define a receiving space. The blade has at least one second connection section disposed at one end of the blade. The second connection section is complementary to the first connection section and connected thereto. The blades are positioned in an overlapping pattern. The blades are independently formed and are easier to manufacture. Therefore, the manufacturing process of the fan structure is simplified and the manufacturing cost is lowered. Moreover, the wind power of the fan structure is increased.