Abstract: A catalytic cracking catalyst contains 15-50 wt. % of beta zeolite, 10-75 wt. % of clay, and 10-50 wt. % of large-particle-size sol. Its total pore volume is not less than 0.200 mL/g of which more than 60% is attributed to 4-50 nm mesopores. The large-particle-size sol has 10-40 wt. % of Al2O3, 50-85 wt. % of P2O5, and 0.2-10 wt. % of SiO2, and an average particle size of 20 to 50 nm. To prepare the catalyst, an aluminum source and deionized water are mixed to obtain a first slurry; the first slurry and a phosphorus source are mixed to obtain a second slurry; a silica sol is added into the second slurry to obtain a third slurry; the third slurry is subjected to aging treatment to obtain a large-particle-size sol, and the large-particle-size sol is mixed uniformly with clay and beta zeolite to obtain a fourth slurry, which is spray dried and calcined.

Abstract: The catalytic cracking catalyst contains a molecular sieve and an alumina substrate material. The alumina substrate material has a crystalline phase structure of ?-alumina. Based on the volume of pores with a diameter of 2-100 nm, the pore volume of the pores with a diameter of 2-5 nm accounts for 0-10%, the pore volume of the pores with a diameter of more than 5 nm and not more than 10 nm accounts for 10-25%, and the pore volume of the pores with a diameter of more than 10 nm and not more than 100 nm accounts for 65-90%.

Abstract: A folding pallet truck comprises a frame module, a lifting module installed on the frame module and comprising a mount, and a handle module comprising a tube in rotating fit with the mount, wherein a first constraint part is formed between an end, rotatably connected to the mount, of the tube and the mount, and the handle module is folded by detaching the first constraint part or is unfolded by reassembling the first constraint part. The handle module can be folded to be stored or be unfolded and locked to be used by detaching or reassembling the first constraint part formed between the tube of the handle module and the mount of the lifting module, operation is easy, and the pallet truck has a small size when stored.

Abstract: An underwater rescue device, including a cabin provided with a hatch is provided, wherein the hatch is capable to open or close the cabin to form a confined space inside the cabin; a salvage device arranged inside the cabin, comprising a rescue platform and a gripper mechanism arranged on the rescue platform, wherein the rescue platform is movable, the rescue platform is capable to rotate relative to the cabin along at least one rotational axis and is capable to lift and lower to remove the cabin, and the gripper mechanism is configured to grab a drowning person and fix the drowning person on the rescue platform; a cardiopulmonary resuscitation device arranged inside the cabin; a drainage device arranged on the cabin; and a power device arranged on an outer side of the cabin. It has a high degree of automation and can provide immediate rescue for drowning personnel.

Abstract: A folding pallet truck comprises a frame module, a lifting module installed on the frame module and comprising a mount, and a handle module comprising a tube in rotating fit with the mount, wherein a first constraint part is formed between an end, rotatably connected to the mount, of the tube and the mount, and the handle module is folded by detaching the first constraint part or is unfolded by reassembling the first constraint part. The handle module can be folded to be stored or be unfolded and locked to be used by detaching or reassembling the first constraint part formed between the tube of the handle module and the mount of the lifting module, operation is easy, and the pallet truck has a small size when stored.

Abstract: The catalytic cracking catalyst contains a molecular sieve and an alumina substrate material. The alumina substrate material has a crystalline phase structure of ?-alumina. Based on the volume of pores with a diameter of 2-100 nm, the pore volume of the pores with a diameter of 2-5 nm accounts for 0-10%, the pore volume of the pores with a diameter of more than 5 nm and not more than 10 nm accounts for 10-25%, and the pore volume of the pores with a diameter of more than 10 nm and not more than 100 nm accounts for 65-90%.

Abstract: A cross-platform game battle method and apparatus, a terminal, and a system are provided. The method includes sending a first request to a game server in response to a first operation, with respect to a game, on a first web page. A first response is received in response to the first request, and a game address is obtained according to the first response. The game address is sent to a second terminal, the game address being usable by the second terminal to obtain a second web page to start the game. The second terminal is on a platform that is different from a platform of the first web page.

Abstract: The present subject matter relates generally to the use of thermally induced self-assembly of surfactants, such as poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) or 4-octylphenol polyethoxylate, to vary the transparency or opacity of a composition containing the same. The compositions of the present subject matter can be used in smart window technologies.

Abstract: A cross-platform game battle method and apparatus, a terminal, and a system are provided. The method includes sending a first request to a game server in response to a first operation, with respect to a game, on a first web page. A first response is received in response to the first request, and a game address is obtained according to the first response. The game address is sent to a second terminal, the game address being usable by the second terminal to obtain a second web page to start the game. The second terminal is on a platform that is different from a platform of the first web page.

Abstract: A self-locking angle adjustment mechanism for an endoscope includes: an endoscope angle adjustment steel wire (5), a rotation handle (2), an endoscope handle (3) and a self-locking rotation device, wherein: an outer conical surface is provided at an external surface of the rotation shaft (7), a conical cylinder is sleeved onto the outer conical surface; a spring (14), which is capable of driving the rotation shaft to move towards a direction of the conical cylinder or driving the conical cylinder to move towards a direction of the rotation shaft, and forcing the inner conical surface to closely fit with the outer conical surface for self-locking, is located along an axial direction of the rotation shaft or conical cylinder. Through the present invention, the flexible sheath is locked stepless at any position, meeting free positioning requirement of endoscope during surgeries, reducing labor strength during surgeries, avoiding patient injuries caused by misoperations.

Abstract: The present subject matter relates generally to the use of thermally induced self-assembly of surfactants, such as poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) or 4-octylphenol polyethoxylate, to vary the transparency or opacity of a composition containing the same. The compositions of the present subject matter can be used in smart window technologies.