Abstract: A MOV device including a MOV chip, a first base metal electrode disposed on a first side of the MOV chip, and a second base metal electrode disposed on a second side of the MOV chip opposite the first side, each of the first base metal electrode and the second base metal electrode including a first base metal electrode layer disposed on a surface of the MOV chip and formed of one of silver, copper, and aluminum, the first base metal electrode layer having a thickness in a range of 2-200 micrometers, and a second base metal electrode layer disposed on a surface of the first base metal electrode layer and formed of one of silver, copper, and aluminum, the second base metal electrode layer having a thickness in a range of 2-200 micrometers.

Abstract: Embodiments of apparatus for flipping a semiconductor device and method of using the same are disclosed. In an example, an apparatus for flipping a semiconductor device includes at least one fixture and a rotation unit connected to the at least one fixture. The at least one fixture is configured to hold the semiconductor device by simultaneously pressing a first surface and a second surface of the semiconductor device. The first surface is opposite to the second surface. The rotation unit is configured to rotate the at least one fixture to flip the semiconductor device held by the at least one fixture.

Abstract: An expandable and upgradeable universal socket, including a socket body and a function module. The function module is replaceable and upgradeable, and is detachably fixed to the socket body. A power circuit of the function module is separably connected to a power circuit of the socket body to enable the function modules to plug and play. A space is provided in the socket body to accommodate the functional module, and a surface of the socket body is provided with a function area corresponding to the function module. Various expanded function modules can be matched and arranged in the reserved space. Small electronic components can be accommodated in the socket bottom box, and the number of external power transformers are reduced, which saves space, reduces exposed wires and beautifies the appearance. There is no need to replace the entire socket when upgrading the socket, which is environmentally friendly and energy saving.

Abstract: An octahydroanthracene compound having the structure shown in formula (I) and (II), preparation method and application thereof are disclosed. The octahydroanthracene compound has a good therapeutic effect on tumors and neurodegenerative diseases. The preparation of the octahydroanthracene compound is mainly carried out by using benzene as a starting material, and being subjected to Friedel-Crafts reaction, nitration, reduction, (sulfo-) amide formation, reduction, urea formation or amide formation, thus obtaining a target compound.

Abstract: An octahydroanthracene compound having the structure shown in formula (I) and (II), preparation method and application thereof are disclosed. The octahydroanthracene compound has a good therapeutic effect on tumors and neurodegenerative diseases. The preparation of the octahydroanthracene compound is mainly carried out by using benzene as a starting material, and being subjected to Friedel-Crafts reaction, nitration, reduction, (sulfo-) amide formation, reduction, urea formation or amide formation, thus obtaining a target compound.

Abstract: Embodiments provide a combustion structure that can achieve stable combustion by addressing the aforementioned drawbacks in the prior art such as low flame stability, backfire, deflagration, blockage and/or any other drawbacks. The combustion chamber structure in accordance with the disclosure can include: a grate structure including a first set of elongated components, a fire retention structure including a second set of elongated components. The first set of first elongated components can be arranged along an axial direction within the combustion chamber structure. The second set of elongated components can be arranged along the axial direction in a same direction as the first elongated components. The second set of elongated components can be configured to generate a negative pressure zone within the combustion chamber. The first set of elongated components can form apertures that can be aligned with apertures formed by the second set of elongated components.

Abstract: The invention relates to the technical field of a refrigerator or a wine refrigerator, and more particularly relates to a combined shelf structure. The combined shelf structure is arranged in a wine refrigerator. The combined shelf structure comprises at least two shelf bodies and at least two carrier bars. Connecting holes through which two carrier bars pass are respectively arranged at both ends of each shelf body. Either the top surface or the bottom surface of the shelf body is provided with a groove, and the remaining surface is provided with a flat structure. The carrier bars pass through the connecting holes. The shelf body with a top surface and a bottom surface which is different from the top surface provides choices to users for placing wine bottles or other canned and bottled drinks vertically or horizontally.

Abstract: The invention relates to the technical field of a refrigerator or a wine refrigerator, and more particularly relates to a combined shelf structure. The combined shelf structure is arranged in a wine refrigerator. The combined shelf structure comprises at least two shelf bodies and at least two carrier bars. Connecting holes through which two carrier bars pass are respectively arranged at both ends of each shelf body. Either the top surface or the bottom surface of the shelf body is provided with a groove, and the remaining surface is provided with a flat structure. The carrier bars pass through the connecting holes. The shelf body with a top surface and a bottom surface which is different from the top surface provides choices to users for placing wine bottles or other canned and bottled drinks vertically or horizontally.

Abstract: This invention described a synthesis method of bupropion hydrochloride. m-chloropropiophenone was brominated directly with bromine, then aminated with t-butylamine and finally reacted with HCl to obtain crude product of bupropion hydrochloride. Pure product was obtained after recrystallization. This method is convenient and suitable for commercial manufacturing because of low cost of production, high yield, less byproducts and being environmental friendly.

Abstract: This invention described a synthesis method of bupropion hydrochloride. m-chloropropiophenone was brominated directly with bromine, then aminated with t-butylamine and finally reacted with HCl to obtain crude product of bupropion hydrochloride. Pure product was obtained after recrystallization. This method is convenient and suitable for commercial manufacturing because of low cost of production, high yield, less byproducts and being environmental friendly.