Abstract: The present utility model discloses a wall lamp, including a wall lamp housing and a wall lamp rear cover, both provided with a hollow cavity. The wall lamp housing is provided therein with an LED light source board and a forward-inclining mounting frame. The present utility model has designed a part in the wall lamp that can meet the needs of switching between full cutoff light and semi-cutoff light. When full cutoff light is required, the LED light source board is adjusted to a horizontal state and is fixed, and it can be used as a full cutoff light lamp. When the LED light source board is at 15° or other angle, it can be used as a semi-cutoff light lamp, which can be adjusted according to a user's needs. At the same time, the light output range can also be adjusted when adjusting the angle.

Abstract: Disclosed is a multifunctional foldable children's tricycle and its operating method, which includes a front frame and a rear frame connected by a main beam. A front directional wheel is provided on the front frame of the tricycle; a steering handle and rear wheels are provided on the rear frame of the vehicle. The steering handle is connected to the front steering wheel by a synchronous wire rope linkage assembly (1). The synchronous wire rope link assembly (1) comprises a guide block and a front guide piece, and guides and limits the wire rope through the guide block and the front guide piece. The multi-functional foldable children's tricycle has a simple structure, more stable steering operation and convenient folding.

Abstract: An image processing method includes: obtaining a first categorical feature and M first image features corresponding to M first images respectively, each first image being associated with a task index, task indices associated with different first images being different from each other, M being a positive integer; fusing the M first image features with the first categorical feature respectively so as to obtain M first target features; performing feature extraction on the M first target features so as to obtain M second categorical features; selecting a second categorical feature corresponding to each task index from the M second categorical features, and performing regularization corresponding to the task index on the second categorical feature, to obtain a third categorical feature corresponding to the task index; and performing image processing in accordance with M third categorical features so as to obtain M first image processing results of the M first images.

Abstract: A method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the method including 1) producing a core rod component; 2) producing an inner cladding casing component; 3) disposing the core rod hollow shaft and the casing hollow shaft respectively in the glass lathe; 4) cutting off connections among a pressure controlling pipe, a scrubber, and a vacuum pump; 5) connecting the inner cladding casing to the core rod hollow shaft hermetically; 6) turning on the glass lathe; 7) transporting a first mixture gas to the core rod hollow shaft; 8) moving a high temperature heat source; 9) transporting a second mixture gas to the core rod hollow shaft; 10) transporting the first mixture gas to the core rod hollow shaft; 11) transporting the first mixture gas under certain conditions; and 12) controlling relevant parameters to fuse the inner cladding casing with the core layer rod.

Abstract: A method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the method including 1) producing a core rod component; 2) producing an inner cladding casing component; 3) disposing the core rod hollow shaft and the casing hollow shaft respectively in the glass lathe; 4) cutting off connections among a pressure controlling pipe, a scrubber, and a vacuum pump; 5) connecting the inner cladding casing to the core rod hollow shaft hermetically; 6) turning on the glass lathe; 7) transporting a first mixture gas to the core rod hollow shaft; 8) moving a high temperature heat source; 9) transporting a second mixture gas to the core rod hollow shaft; 10) transporting the first mixture gas to the core rod hollow shaft; 11) transporting the first mixture gas under certain conditions; and 12) controlling relevant parameters to fuse the inner cladding casing with the core layer rod.

Abstract: An apparatus and a method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the apparatus including a core rod component, an inner cladding casing component, a high temperature heat source, chucks, a rotary joint, an external gas pipe, and a pressure controlling pipe. The core rod component is produced by fusing and splicing a core layer rod and a first hollow shaft together. The inner cladding casing covers the outside of the core layer rod. The inner cladding casing component is produced by fusing and splicing an inner cladding casing and a second hollow shaft together. These two hollow shafts are clamped in two chucks of a glass lathe. A high temperature heat source is arranged outside the inner cladding casing.

Abstract: An apparatus and a method for producing a depressed-cladding core rod of an ultra-low water peak optical fiber, the apparatus including a core rod component, an inner cladding casing component, a high temperature heat source, chucks, a rotary joint, an external gas pipe, and a pressure controlling pipe. The core rod component is produced by fusing and splicing a core layer rod and a first hollow shaft together. The inner cladding casing covers the outside of the core layer rod. The inner cladding casing component is produced by fusing and splicing an inner cladding casing and a second hollow shaft together. These two hollow shafts are clamped in two chucks of a glass lathe. A high temperature heat source is arranged outside the inner cladding casing.

Abstract: A method of subjecting a middle-distillate hydrocarbon feedstock to a hydrotreating reactions to remove heteroatoms and/or hydrogenate aromatics, and apparatus therefor. The method comprising heating a liquid middle distillates hydrocarbon feedstock to produce a heated feedstock, mixing the heated feedstock with a hydrogen-containing treating gas to produce a mixture, and bringing the mixture into contact with a hydrotreating catalyst at an elevated temperature and an elevated pressure effective for hydrotreating the feedstock. The hydrogen-containing gas is mixed with the heated feedstock in a ratio effective to fully vaporize the liquid feedstock at the elevated temperature and pressure before the feedstock is contacted with said hydrotreating catalyst. Ideally, the mixture is passed through a catalyst bed creating a pressure drop in the gas mixture equal to or less than 0.3 bar/m. Such a catalyst bed may be made of structured catalysts, such as monolithic catalysts.