Abstract: A system for product recommendation comprises several automatic service equipments which are mutually linked via a communication network. Each of the automatic service equipments obtains data of other user groups, data of other product groups and other, relation matrixes from other automatic service equipments. Each of the automatic service equipments integrates data of other user groups into data of local user groups stored in itself, and also integrates data of other product groups into data of local product groups stored in itself. Each of the automatic service equipments revises a local relation matrix stored in itself, such that the revised local relation matrix records correlation coefficients between the integrated local user groups and the integrated local product groups. Each of the automatic service equipments performs product recommendation according to the integrated data and input data received through an input device.

Abstract: A safety syringe includes a barrel, a push rod, a driving module, and a needle mount. The barrel includes a hollow passage and a barrel cover, and the push rod includes a pad disposed around a distal portion and pushed tightly along the hollow passage of the barrel, and the barrel cover includes a plunger, a driving module of a piston pump, and a needle mount having a cut surface at the piston pump, such that the distal portion of the push rod pushes the plunger to move forward, while the cut surface of the distal portion and the cut surface of the needle mount are pressed to separate with each other, and the plunger continues moving forward to offset the air pressure therein, so as to retract the needle mount into a push rod accommodating cavity to accommodate the needle safely after an injection is taken place.

Abstract: An exemplary direct current to alternating current converter includes a pulse width modulator having a plurality of pulse signal outputs that can provide a plurality of pulse signals, a driving circuit having a plurality of switching units, and a transformation circuit having a plurality of transformers. Each of the switching units includes a P-type transistor and an N-type transistor. Each pulse signal output is electrically connected to the P-type and N-type transistors of one of the switching units. Each of the transformers is connected to two of the switching units, and the P-type transistors and the N-type transistors of the two switching units are not switched on simultaneously.

Abstract: A temperature moderation system with temperature difference considerations between indoors and outdoors for facilitating an air conditioner in operation control, comprises an indoor unit and an outdoor unit connected with each other. The outdoor unit has an outdoor temperature detection element. The indoor unit has a processor for generating and sending a target temperature to the air conditioner for operation control. The target temperature is one selected from the indoor setting temperature and a pre-set temperature, which is more approximated to the outdoor temperature.

Abstract: A method and apparatus for dequeuing data are disclosed. The method includes: obtaining storage addresses of packets in each queue, and dequeuing, by multiple dequeue processing engines, the packets in each queue in parallel according to the storage addresses of the packets in each queue. Multiple dequeue processing engines dequeue the packets in multiple queues in parallel, and thus the data dequeue efficiency and performance are improved.

Abstract: A system and a method for writing cache data and a system and a method for reading cache data are disclosed. The system for writing the cache data includes: an on-chip memory device, configured to cache received write requests and write data associated with the write requests and sort the write requests; a request judging device, configured to extract the sorted write requests and the write data associated with the write requests according to write time sequence restriction information of an off-chip memory device; and an off-chip memory device controller, configured to write the write data extracted by the request judging device in the off-chip memory device. With a combination of the on-chip and off-chip memory devices, a large-capacity data storage space and a high-speed read and write efficiency is achieved.

Abstract: An alga microbe photosynthetic reaction system is used to circularly cultivate alga microbes and a culture medium infused in the system. The system comprises a photosynthetic reaction unit, a communicating unit, a pressure liquid infusion unit, an injection and oxygen discharging device, and a regulation area. The photosynthetic reaction unit is a light permeable pipeline. The injection and oxygen discharging device is assembled with an oxygen discharge can and a liquid collection can. By the connection and the functioning of the photosynthetic reaction unit, the communicating unit, the pressure liquid infusion unit, the injection and oxygen discharging device, and the regulation area, the alga microbe culture solution can circularly cultivate good quality algae in the system. The system further comprises a heating unit, a watering unit, and a light complement unit to control the ambient temperature and the light source to suit all kinds of algae.

Abstract: Disclosed are processes for making 2, 3 disubstituted indole compounds such as compounds of general formula I comprised of the steps of a) reacting a bromoindole compound (i) with a dialkoxyl C1-5 borane in the presence of a ligand, a palladium catalyst and a base to make a compound of general formula (ii); or alternatively reacting compound (i) with a trialkyl magnesiate reagent, followed by treatment with a borate; b) reacting the product of step a with a R2-Hal where R2-Hal is defined herein.

Abstract: An exemplary DC to DC converter (2) includes a transistor (29), a first rectifying and filtering circuit (21), a pulse generating circuit (27) and a transformer (25). The first rectifying and filtering circuit transforms an external AC voltage to a first DC voltage. The transformer includes a primary winding (251), an assistant winding (252) connected with the primary winding in a flyback mode, and a secondary winding (253). The first DC voltage is connected to ground via the primary winding, the transistor in series. The pulse generating circuit includes a controlling terminal, a diode, a resistor, and a capacitor. One terminal of the assistant winding is connected to ground, and the other terminal of the assistant winding is connected to an anode of the diode. A cathode of the diode is connected to ground via the resistor and the capacitor in series. The controlling terminal is connected to gate electrode of the transistor.

Abstract: An exemplary power supply control circuit (200) includes a first port (201), a second port (202), a third port (203), a controllable switch (280), and a control circuit (270). The first and second ports are configured to receive a power supply voltage signal. The second and third ports are configured to output the power supply voltage signal to a load circuit. The controllable switch includes a control member (281) and a switch member (282). The control circuit is configured to control a working state of the control member. When the load circuit stops working, the control circuit controls the control member to control the switch member to be disconnected, so as to cut off the power supply voltage signal from outputting to the load circuit. A liquid crystal display (400) using the power supply control circuit is also provided.

Abstract: Photopolymerizable polymer composites based on dimethacrylate systems have been increasingly utilized as dental restorative materials. One of the biggest drawbacks of current dental resin systems is the volume shrinkage and shrinkage induced stresses that arise during the polymerization. Other major problems include incomplete double bond conversion and insufficient wear resistance. This invention involves the development of an entirely novel approach to the photopolymerization process that utilizes thiol-ene systems as low shrinkage and ultra-low shrinkage stress dental restorative materials. Compared with the traditional dimethacrylate dental resins, these novel photopolymerizations have demonstrated a dramatically decreased volume shrinkage, extremely rapid polymerization, abilities to photopolymerize ultrathick materials and achieve much higher conversion, lack of oxygen inhibition and ultra-low shrinkage stress due to low volume shrinkage and drastically delayed gel point conversion.

Abstract: A switching power supply includes a switching unit, a driving signal generator, and a control circuit. The driving signal generator is configured for providing a driving signal including a plurality of acting voltage parts. The plurality of acting voltage parts is used to turn on the switching unit. Each of the acting voltage parts may be one of a high level voltage and a low level voltage. The control circuit is connected between the driving signal generator and the switching unit. The control circuit turns off the switching unit when a duration of one of the plurality of acting voltage parts is longer than a preset time period.

Abstract: A power supply module includes a rectifying and filtering unit, a pulse width modulation (PWM) unit, a voltage transforming unit, a sampling and comparing unit, and an overvoltage protection unit. The rectifying and filtering unit receives an alternating current (AC) voltage, and generates a filtered primary DC voltage. The PWM unit is configured for generating pulses. The voltage transforming unit transforms the filtered primary DC voltage into the DC voltage according to the pulses. The sampling and comparing unit samples the DC voltage, and generates an overvoltage signal when the sampled DC voltage exceeds a predetermined DC voltage. The overvoltage protection unit is coupled between the sampling and comparing unit and the PWM unit. According to the overvoltage signal, the overvoltage protection unit generates a first control signal to disable the PWM unit, and the overvoltage protection unit is self-locked.

Abstract: A slurry composition has an amount of 100% and includes abrasives, an acid-base pH adjustor, an oxidant and water. A content of the abrasives is 10 wt % to 40 wt %, and a polydisperse index of the abrasives sizes is greater than 1.8. A content of the acid-base pH adjustor is 0.01 wt % to 10 wt %. A content of the oxidant is 0.01 wt % to 10 wt %. A remaining portion of the slurry composition is water.

Abstract: A power supply module includes an AC/DC converter, a voltage transforming circuit, a feedback circuit, and a filtering circuit. The AC/DC converter is used for converting the AC voltage to a primary DC voltage. The voltage transforming circuit is configured for transforming the primary DC voltage to the first DC voltage. The voltage transforming circuit includes a transformer, the transformer includes a primary winding. The feedback circuit is coupled to the primary winding of the transformer and is configured for sampling a current flowing through the primary winding to generate a feedback signal; and the filtering circuit is structured and arranged for filtering any surge voltage transmitted from the feedback circuit to the voltage transforming circuit. Wherein the voltage transforming circuit maintains the first DC voltage at a predetermined value according to the feedback signal. A related power supply module assembly is also provided.

Abstract: An exemplary inverter circuit (200) includes a direct current (DC) input terminal (210); a transformer (230) including a first primary winding (231) and a second primary winding (232); a first switch transistor (240); a second switch transistor (250); a pulse generator (260) providing pulse driving signals to the first switch transistor and the second transistor respectively; and a resistor (29). The first primary winding and the second primary winding share a tap (235), the tap is connected to the DC input terminal via the resistor. A drain electrode of the first switch transistor is connected to the tap via the first primary winding, and a drain electrode of the second switch transistor is connected to the tap via the second primary winding.

Abstract: A power supply module is configured for converting an AC voltage to a first DC voltage and applying the first DC voltage to a load. The power supply module includes a rectifying and filtering unit, a PFC unit, a voltage transforming unit, an input port, and a switch unit. The rectifying and filtering unit rectifies the AC voltage into a primary DC voltage and filters the primary DC voltage. The PFC unit corrects a power factor of the filtered primary DC voltage. The voltage transforming unit converts the corrected primary DC voltage and generates the first DC voltage for applying the load. The input port receives a first instruction or a second instruction and generates a first signal or a second signal, respectively. The switch unit establishes or disconnects an electrical connection between the voltage transforming unit and the load according to the first signal or the second signal.

Abstract: A power supply module includes an AC/DC converter, a voltage transforming circuit, a feedback circuit, and a detecting circuit. The AC/DC converter is used for converting the input AC voltage to a primary DC voltage. The voltage transforming circuit is used for transforming the primary DC voltage to the first DC voltage. The feedback circuit is used for sampling the first DC voltage to generate a feedback signal. The detecting circuit is used for detecting if the power supply module is powered on, and generating a first voltage when detecting that the power supply module is powered on. Wherein the voltage transforming circuit maintains the first DC voltage at a first predetermined value according to the feedback signal, the feedback circuit increases a magnitude of the feedback signal according to the first voltage.

Abstract: A transformation circuit includes a bidirectional switch, a capacitor, and a triac. A first electrode of the triac is for receiving an input alternating current (AC) voltage. A second electrode of the triac is for outputting a transformed AC voltage. A control electrode of the triac is electrically connected to one terminal of the bidirectional switch, and the other terminal of the bidirectional switch is electrically connected to one terminal of the capacitor, and the other terminal of the capacitor is electrically connected to the first electrode of the triac. When the capacitor is charged or discharged, the bidirectional switch is switched on or off, and the triac is triggered on or off accordingly, such that a duty cycle of the input AC voltage is changed to form the transformed AC voltage.

Abstract: A method, an apparatus, and a system for processing buffered data are disclosed. The method includes: packing data packets in a same queue; splitting the packed data packet into multiple data cells according to a predetermined cell size; and storing the split data cells in multiple memories. The preceding method, apparatus, and system improve the read and write efficiency of the memories and improve the balance of the read and write bandwidths among multiple memories, thus improving the system performance.