Abstract: Aspects of the present disclosure generally relate to processes for forming multimetallic alloys and carbon-supported multimetallic alloys. In an aspect, a process for forming carbon-supported PtNiCoRu nanoparticles is provided. The process includes forming a mixture comprising a platinum (Pt) metal source, a nickel (Ni) metal source, a cobalt (Co) metal source, a ruthenium (Ru) metal source, a carbon source, and a solvent. The process further includes heating the mixture at a temperature that is from about 80° C. to about 250° C. to form carbon-supported nanoparticles, the carbon-supported nanoparticles including a carbon support, and PtNiCoRu single phase alloy nanoparticles chemically bonded to the carbon support. Processes for forming carbon-supported PtNiCoRuFe nanoparticles are also provided. Processes for forming PtNiCoRu and PtNiCoRuFe alloy nanoparticles are also provided.

Abstract: Aspects of the present disclosure generally relate to processes for forming carbon-supported platinum nanocrystals. In an aspect is provided a process for forming a carbon-supported platinum catalyst that includes forming a mixture comprising a platinum metal source, a carbon source, an acid, and a solvent. The process further includes heating the mixture at a temperature that is from about 80° C. to about 250° C. to form a carbon-supported platinum nanocatalyst, the carbon-supported platinum nanocatalyst comprising platinum nanoparticles chemically bonded to a carbon support.

Abstract: Aspects of the present disclosure generally relate to processes for forming electrodes comprising bimetallic catalysts and to processes for forming electrodes comprising trimetallic catalysts. In an aspect, a process for making an electrode comprising carbon-supported metal alloy nanoparticles is provided. The process includes applying a plurality of first voltage cycles to an initial electrode, the initial electrode including metal alloy nanoparticles that includes platinum and one or more Group 8-11 metals, the one or more Group 8-11 metals free of Pt; and a carbon source. The process further includes applying a plurality of second voltage cycles to form a final electrode, the metal alloy nanoparticles of the final electrode having an oxygen reduction reaction (ORR) mass activity that is greater than the ORR mass activity of the initial electrode.

Abstract: A device for detecting sludge moisture content based on density includes a detection chamber that is provided with a feeding mechanism, a compacting mechanism, a measuring mechanism, and an information processing unit. The feeding mechanism is provided on one side of the compacting mechanism, the measuring mechanism is provided on another side of the compacting mechanism, and the measuring mechanism is connected to the information processing unit. The feeding mechanism comprises a feeding base which is provided with a limited sliding block; and the limited sliding block is connected to a feeding sliding rail. The compacting mechanism comprises a feeding base, a rotating cam is provided at a lower end of the feeding base, and a hydraulic equipment is provided at an upper end of the feeding base. The measuring mechanism comprises a weighing base, and a height detecting base is provided at an upper end of the weighing base.

Abstract: The present disclosure discloses a method for preparing a sludge conditioner from water supply sludge and a use of the sludge conditioner. The sludge conditioner is prepared by mixing the water supply sludge and sewage sludge. The method includes the following steps: mixing the water supply sludge and the sewage sludge in proportion, adding a pore forming agent, stirring a mixture uniformly, and conducting mechanical dehydration, air-drying, grinding, sieving, and pyrolysis to obtain the sludge conditioner. The conditioner is used in advanced oxidation technologies such as catalyzed/activated ozone oxidation, persulfate oxidation, and Fenton oxidation to condition the sludge and enhance dehydration performance.

Abstract: An article of manufacture comprising: (a) a body at least a portion of which is a multi-phase material (MPM) defining a traction surface; (b) the MPM comprising at least first and second zones comprising first and second materials, M1, M2, respectively, at or near the traction surface, the M1 and M2 having first and second Young moduli respectively, the first and second moduli differing by at least a factor of 3; and (c) wherein each of the second zones has a center, and wherein the second zones have a center-to-center radial distribution function having a peak at between 10 ?m and 10 mm.

Abstract: An all-glass optical atom-chamber with a vacuum higher than 1×10?8 Pa and a manufacturing method thereof are provided. The all-glass optical atom-chamber includes an optical vacuum chamber, at least one conduit, optical window sheets, at least one vacuum adapter, and pressing sheets. The optical vacuum chamber is a polyhedron with a plane of any shape; the plane of the polyhedron is provided with an optical window therein. Holes of the optical windows extending into the polyhedron form a same inner chamber. Each of the optical window sheets is fixed on respective optical windows. One end of each of the at least one conduit is fixedly connected to the optical vacuum chamber. The other end of the at least one conduit is connected to one end of the at least one vacuum adapter in one-to-one correspondence through a respective pressing sheet of the pressing sheets.

Abstract: The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.

Abstract: An article of manufacture comprising: (a) a body at least a portion of which is a multi-phase material (MPM) defining a traction surface; (b) the MPM comprising at least first and second zones comprising first and second materials, M1, M2, respectively, at or near the traction surface, the M1 and M2 having first and second Young moduli respectively, the first and second moduli differing by at least a factor of 3; and (c) wherein each of the second zones has a center, and wherein the second zones have a center-to-center radial distribution function having a peak at between 10 ?m and 10 mm.

Abstract: The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.

Abstract: The disclosure demonstrates a collapsible wheeled walker having two side frames supported above a walking surface with attached wheel assemblies. The side frames are interconnected by an X-folder apparatus. The X-folder apparatus has first and second elongate elements rotatably coupled to each other with the bottom ends of the elements rotatably attached to the bottoms of the side frames, and the top ends of the elements having perpendicular support elements that in the deployed open position, engage support brackets formed on the inner sides of the side frames. The support brackets have protrusions extending from bracket support surfaces to engage complementary apertures formed in the perpendicular support elements to provide stability to the wheeled walker.