Abstract: The present invention discloses a sludge anaerobic fermentation treatment method with simultaneously enhanced acid production and phosphorus removal. The method includes steps of: (1) adding waste activated sludge into an anaerobic reaction system, with a concentration of a total suspended solid (TSS) of 10000-15000 mg/L; (2) maintaining a pH value of the waste activated sludge at 10±0.1; adding powdery magnetite of 0.3-0.9 g/gVS S. Compared with simple alkaline conditions, in the method of the present invention, an accumulation amount of short chain fatty acids (SCFAs) in a fermentation broth is increased by 20%, and a content of orthophosphoric acid is reduced by 10%. The method can further improve the enhancing effect by using sulfuric acid to modify the magnetite, the accumulation amount of SCFAs can be increased by 36.7% at most, and the content of phosphorus and refractory organic substances can be reduced by 32.4% and 40.4% at most, respectively.

Abstract: A dishwasher water channel, which is integrated in a base of a dishwasher, is disclosed. The dishwasher water channel has a water distribution chamber, a flow guidance channel, and a spray arm. The flow guidance channel has one end communicating with the water distribution chamber and the other end communicating with the spray arm. The flow guidance channel extends from an outer wall of the water distribution chamber toward a rear end of the base and communicates with the spray arm at the rear end of the base. A spray arm seat is provided between the spray arm and the flow guidance channel and penetrates the base. The spray arm is connected to a top of the spray arm seat and located above the base to spray water out of the spray arm seat, and the flow guidance channel is connected to a bottom of the spray arm seat and located below the base.

Abstract: The invention discloses a plotting method for a three-dimensional time-space diagram showing a regional green-wave coordinated control effect. The plotting method includes the following steps: establishing a coordinate system of the three-dimensional time-space diagram; determining a specific position coordinate of each intersection in the coordinate system of the three-dimensional time-space diagram; generating a time prism of a signal timing plan of each intersection; determining a green-wave bandwidth of each arterial road; and generating a driving trajectory between the intersections, and making a green-wave band of each arterial road, and completing plotting.

Abstract: A carbon nanomaterial functionalized needle tip is modified with a low work function material. The needle tip is formed by combining a carbon nanomaterial with a material of a needle tip through a covalent bond. The interior or outer surface of the carbon nanomaterial is modified with a low work function material. The material of the needle tip is a metal which can be any of tungsten, iron, cobalt, nickel, and titanium. The carbon nanomaterial can be carbon nanocone or carbon nanotube. The tip of the carbon nanomaterial has the same orientation as the metal needle tip. The low work function material can be selected from metals, metal carbides, metal oxides, borides, nitrides, and endohedral metallofullerene. The carbon nanomaterial functionalized needle tip has a lower electron emission barrier, and can effectively reduce the electric field intensity required for electron emission, and improve the emission current and emission efficiency.

Abstract: The invention discloses a plotting method for a three-dimensional time-space diagram showing a regional green-wave coordinated control effect. The plotting method includes the following steps: establishing a coordinate system of the three-dimensional time-space diagram; determining a specific position coordinate of each intersection in the coordinate system of the three-dimensional time-space diagram; generating a time prism of a signal timing plan of each intersection; determining a green-wave bandwidth of each arterial road; and generating a driving trajectory between the intersections, and making a green-wave band of each arterial road, and completing plotting.

Abstract: Provided is a conical nano-carbon material functionalized needle tip, formed by assembling a nano-carbon material with a material of a needle tip by means of a covalent bond; and the material of the needle tip is a metal selected from one or more of tungsten, iron, cobalt, nickel and titanium. Further provided is a method for preparing the conical nano-carbon material functionalized needle tip. The conical nano-material functionalized needle tip has an outstanding interface formed by metal-carbide covalent bonds, and the orientation of the conical nano-material is matched with the axial direction of the metal needle tip (illustrated in FIG. 6). The proposed preparation method affords a robust interface and avoids the potential pollution to the nano-material caused during the deposition of fixing materials, such as carbon or platinum or the like, in other preparation methods.

Abstract: Provided is a conical nano-carbon material functionalized needle tip, formed by assembling a nano-carbon material with a material of a needle tip by means of a covalent bond; and the material of the needle tip is a metal selected from one or more of tungsten, iron, cobalt, nickel and titanium. Further provided is a method for preparing the conical nano-carbon material functionalized needle tip. The conical nano-material functionalized needle tip has an outstanding interface formed by metal-carbide covalent bonds, and the orientation of the conical nano-material is matched with the axial direction of the metal needle tip (illustrated in FIG. 6). The proposed preparation method affords a robust interface and avoids the potential pollution to the nano-material caused during the deposition of fixing materials, such as carbon or platinum or the like, in other preparation methods.