Abstract: A method for offshore dual-drive core drilling with three layers of casings under surge compensation is provided. According to the method, a drilling vessel is located at set latitude and longitude coordinates by a dynamic positioning system; drill pipes are stabilized by a seabed template; torques and drilling pressures can be transmitted during drilling of the casings by means of surge compensation of the casings at a wellhead; during drilling for sampling, the surge compensation can compensate to a certain extent for a change in water depth caused by rising or falling tides, or surge, thereby preventing the casings from colliding with equipment and ensuring the safety of wellhead operation; and the drilling of three layers of casings is achieved by means of dual driver heads to effectively protect a wellbore wall, such that high core-drilling rate and good core-drilling quality are achieved during drilling for sampling.

Abstract: A method for controlling a device for automatically adjusting an airway opening body position is provided. The device includes a horizontal base plate, a head support block, a back support plate, a neck support apparatus, a head cover assembly, and a programmable logic controller (PLC). The neck support apparatus is positioned between the head support block and the back support plate. The PLC is configured to controls a stroke of an electric cylinder according to the following equations: ?=1.235?+?, and ?=KX+B+C, where ? is a body position angle, the body position angle is an angle between a positive projection line of a connecting line from a mandibular angle to an external acoustic meatus on a symmetrical surface of a human body and the back support plate, and ? is a preset value ranging from 90° to 100°.

Abstract: Starch-based extruded food products and methods for manufacturing starch-based extruded food products, such as snacks, are disclosed. For example, a starch-based dough may be extruded, cut, and cooked to form a starch-based extruded food product with a rigid extruded body. The cooking process may include baking and/or frying the cut extrusion. The rigid extruded body of the starch-based extruded food product is made up of bodies or segments coupled at joints. The rigid extruded bodies are configured such that bodies of the rigid extruded body may be broken off or separated at the joints to be consumed.

Abstract: A method for offshore dual-drive core drilling with three layers of casings under surge compensation is provided. According to the method, a drilling vessel is located at set latitude and longitude coordinates by a dynamic positioning system; drill pipes are stabilized by a seabed template; torques and drilling pressures can be transmitted during drilling of the casings by means of surge compensation of the casings at a wellhead; during drilling for sampling, the surge compensation can compensate to a certain extent for a change in water depth caused by rising or falling tides, or surge, thereby preventing the casings from colliding with equipment and ensuring the safety of wellhead operation; and the drilling of three layers of casings is achieved by means of dual driver heads to effectively protect a wellbore wall, such that high core-drilling rate and good core-drilling quality are achieved during drilling for sampling.

Abstract: The present invention discloses an optimization method for a screen surface dynamic load of a vibrating screen. The method includes the following steps: step 1. selecting design variables, and establishing an experimental matrix; step 2. performing a response curved surface experiment; step 3. establishing two double-objective optimization models and solving the same to obtain two groups of Pareto solution sets, wherein the solution sets respectively represent screening efficiency optimization paths of the vibrating screen under the conditions of a high screen surface dynamic load and a low screen surface dynamic load; and step 4. calculating an optimization space for a screen surface dynamic load under a high screening efficiency. According to the method of the present invention, the screen surface dynamic load can be directly reduced, and the service life of the screen surface and the whole vibrating screen is prolonged.

Abstract: The present invention discloses an optimization method for a screen surface dynamic load of a vibrating screen. The method includes the following steps: step 1. selecting design variables, and establishing an experimental matrix; step 2. performing a response curved surface experiment; step 3. establishing two double-objective optimization models and solving the same to obtain two groups of Pareto solution sets, wherein the solution sets respectively represent screening efficiency optimization paths of the vibrating screen under the conditions of a high screen surface dynamic load and a low screen surface dynamic load; and step 4. calculating an optimization space for a screen surface dynamic load under a high screening efficiency. According to the method of the present invention, the screen surface dynamic load can be directly reduced, and the service life of the screen surface and the whole vibrating screen is prolonged.

Abstract: Crystalline photovoltaic (PV) cells and methods of manufacturing cells are described. One example method of manufacturing a PV cell includes depositing a plurality of first fingers on a crystalline silicon wafer. The first fingers extend in a first direction parallel to each other and comprise a substantially non-silver conductive material.

Abstract: An exemplary portable electronic device includes a housing defining an opening, an internal fixing element including a pair of protruding blocks and defining a groove in communication with the opening, and a support mechanism. The groove defines a stepped structure and includes a larger groove portion, and a smaller groove portion communicating with the larger groove portion. The support mechanism is slidably receivable in the housing, and includes a support and a slider defining a recess. The slider includes a connection portion received in the recess and a head set atop the connection portion. The connection portion abuts the pair of the protruding blocks when the slider is in a retracted position. The head is received in the larger groove portion and slidably resting on a step formed between the larger and smaller groove portions. The support includes a body and a board connected to one end of the body.

Abstract: An exemplary portable electronic device includes a housing defining an opening, an internal fixing element including a pair of protruding blocks and defining a groove in communication with the opening, and a support mechanism. The groove defines a stepped structure and includes a larger groove portion, and a smaller groove portion communicating with the larger groove portion. The support mechanism is slidably receivable in the housing, and includes a support and a slider defining a recess. The slider includes a connection portion received in the recess and a head set atop the connection portion. The connection portion abuts the pair of the protruding blocks when the slider is in a retracted position. The head is received in the larger groove portion and slidably resting on a step formed between the larger and smaller groove portions. The support includes a body and a board connected to one end of the body.