Abstract: Provided is an air duct system applied to a hair straightening device, relating to the technical field of hair straightening devices. The air duct system includes a main body. There is a main flow channel and two branch flow channels connected to the main flow channel inside the main body. The main body has two hair straightening walls that cooperate with each other at intervals. A hair straightening space that is used to straighten or dry hair is formed between the two hair straightening walls. A main flow channel and two branch flow channels that are connected to the main flow channel are disposed inside the main body. The two branch flow channels are disposed along length directions of the two hair straightening walls. A plurality of oblique air outlets are disposed on the hair straightening wall along a length direction of the hair straightening wall.

Abstract: A detection device for high-frequency pseudo-random spread spectrum coded sequence signal of shallow geologic body includes a signal transmitter and a synchronous signal receiver. The signal transmitter includes a first Mono-Chip Computer (MCU), a first Field Programmable Gate Array (FPGA), a power amplifier module, a direct-current (DC) power supply, a first display module, a first Global Position System (GPS) synchronization module, a first communication module, and a first memory module. The synchronous signal receiver includes a preamplifier circuit, a bandpass filter circuit, a program-controlled amplifier circuit, an analog to digital (AD) converter circuit, a second FPGA, a second MCU, a second communication module, a second display module, a second GPS synchronization module, and a second memory module. A method using the detection device is further provided.

Abstract: A transmission device for multi-frequency equal-amplitude non-harmonic electrical prospecting signal includes a single-chip microcontroller, a field programmable gate array (FPGA), a digital to analog conversion (DAC) module, an isolation amplifier circuit, a differential amplifier module, a digital power amplifier circuit, and a sensor module connected successively. A plurality of output ends of the digital power amplifier circuit is in cascade connection with a grounding electrode A and a grounding electrode B to form a loop with ground. An input end of the sensor module is connected with the digital power amplifier circuit. An output end of the sensor module is connected with the single-chip microcontroller.

Abstract: A method for preparing bismuth oxide nanowire films by heating in an upside down position includes: washing a substrate, and fixing the substrate to a substrate support in a magnetron sputtering system in a position where an electrically conductive surface of the substrate faces downwards; placing a bismuth target, which is adhered to a copper backing plate, on a sputtering head in the magnetron sputtering system; performing direct current magnetron sputtering to form a bismuth film on the electrically conductive surface of the substrate; and regulating a heating temperature to maintain the bismuth film in a semi-molten state, and providing a predetermined oxygen gas concentration to form the bismuth oxide nanowire film.

Abstract: A device and method for measuring spectrum parameters of a formation outcrop and a rock mass are provided. An excitation signal is generated by a direct digital synthesis (DDS) module of a signal transmission portion. A constant voltage mode or a constant current mode is adopted for observation. After the signal passes through a constant voltage/constant current module, a constant high-voltage signal source or a current source signal with constant current output is formed and output to ground through grounding electrodes A and B to establish a stable observation signal field source. Geoelectric response information under the excitation of each frequency signal is acquired by a signal receiving portion through grounding electrodes M and N, processed and send out to a microcontroller unit (MCU) for display and storage. The spectrum parameters at different depths are observed by adjusting geometric dimensions of AB and MN.

Abstract: A method for synthesizing an intergrown twin Ni2Mo6S6O2/MoS2 two-dimensional nanosheet with exposed (00L) crystal planes is disclosed. An Ni—Mo bonded precursor is formed by using an ion insertion method to restrict Ni ions to be located in a lattice matrix of a Mo-based compound; a dinuclear metal sulfide Ni2Mo6S6O2 is formed by precisely adjusting and controlling a concentration of a sulfur atmosphere and utilizing a reconstruction effect of Ni element in the lattice matrix of the Mo-based compound; and meanwhile, a growth direction of Ni2Mo6S6O2 is precisely adjusted and controlled by using a method for growing a single crystal in a limited area, so that Ni2Mo6S6O2 is grown, taking a single crystal MoS2 as a growth template, with the single crystal MoS2 alternately along a crystal plane (110) of the single crystal MoS2, so as to form a twin Ni2Mo6S6O2/MoS2 two-dimensional nanosheet in which Ni2Mo6S6O2 and MoS2 are intergrown.

Abstract: A detection device for high-frequency pseudo-random spread spectrum coded sequence signal of shallow geologic body includes a signal transmitter and a synchronous signal receiver. The signal transmitter includes a first Mono-Chip Computer (MCU), a first Field Programmable Gate Array (FPGA), a power amplifier module, a direct-current (DC) power supply, a first display module, a first Global Position System (GPS) synchronization module, a first communication module, and a first memory module. The synchronous signal receiver includes a preamplifier circuit, a bandpass filter circuit, a program-controlled amplifier circuit, an analog to digital (AD) converter circuit, a second FPGA, a second MCU, a second communication module, a second display module, a second GPS synchronization module, and a second memory module. A method using the detection device is further provided.

Abstract: A separation device with two-stage gas-liquid mixture and conical spiral fields is provided. A first-stage uniform mixer performs first-stage gas-liquid crushing and uniform mixing process by an outer micropore ceramic pipe, a middle micropore ceramic pipe and an inner micropore ceramic pipe and crushes large bubbles in the gas-liquid two-phase flow into small bubbles. A second-stage uniform mixer performs second-stage gas-liquid crushing and uniform mixing process. A whirlpool-making gas collector adjusts the gas-liquid uniform mixing flow obtained after two-stage gas-liquid uniform mixing into hollow-core type high-speed two-phase spiral flow. A conical degasser performs gas-liquid efficient separation operation in a high-speed conical spiral field.

Abstract: An electrical prospecting signal transmission device capable of suppressing electromagnetic coupling interference, including a rectangular wave signal source, an output circuit for supplying power to the ground and a plurality of transmission channels. Each of the plurality of transmission channels includes an isolated driving circuit, a low-pass filter circuit and a power amplification circuit connected sequentially in series. The rectangular wave signal source is configured to generate a rectangular wave or a composite rectangular wave. A signal output terminal of the rectangular wave signal source is connected to an input terminal of the isolated driving circuit, and an output terminal of the power amplification circuit is connected to the output circuit to supply power to the ground.

Abstract: Disclosed herein are methods of treating a tumor in a subject, including administering to the subject one or more miRNA nucleic acids or variants (such as mimics or mimetics) thereof with altered expression in the tumor. Also disclosed herein are compositions including one or more miRNA nucleic acids. In some examples, the miRNA nucleic acids are modified miRNAs, for example, and miRNA nucleic acid including one or more modified nucleotides and/or a 5?-end and/or 3?-end modification. In particular examples, the modified miRNA nucleic acid is an miR-30a nucleic acid. Further disclosed herein are methods of diagnosing a subject as having a tumor with altered expression of one or more miRNA nucleic acids. In some embodiments, the methods include detecting expression of one or more miRNAs in a sample from the subject and comparing the expression in the sample from the subject to a control.

Abstract: A device for reducing turn-off time of a transient electromagnetic transmitting signal includes a transmitting coil, a first electronic switch to control connection mode of the transmitting coil and a second electronic switch configured to form a bridge arm. The transmitting coil is a twisted pair including a first wire and a second wire. The first wire is connected to one end of the second electronic switch. The other end of the second electronic switch is connected to one end of the first electronic switch. The other end of the first electronic switch is connected to the second wire. The connection mode of the transmitting coil includes head-to-head connection, head-to-tail connection and tail-to-tail connection between the first wire and the second wire. The first wire and the second wire are connected to form a transmitting loop.

Abstract: A method for synthesizing an intergrown twin Ni2Mo6S6O2/MoS2 two-dimensional nanosheet with exposed (00L) crystal planes is disclosed. An Ni-Mo bonded precursor is formed by using an ion insertion method to restrict Ni ions to be located in a lattice matrix of a Mo-based compound; a dinuclear metal sulfide Ni2Mo6S6O2 is formed by precisely adjusting and controlling a concentration of a sulfur atmosphere and utilizing a reconstruction effect of Ni element in the lattice matrix of the Mo-based compound; and meanwhile, a growth direction of Ni2Mo6S6O2 is precisely adjusted and controlled by using a method for growing a single crystal in a limited area, so that Ni2Mo6S6O2 is grown, taking a single crystal MoS2 as a growth template, with the single crystal MoS2 alternately along a crystal plane (110) of the single crystal MoS2, so as to form a twin Ni2Mo6S6O2/MoS2 two-dimensional nanosheet in which Ni2Mo6S6O2and MoS2 are intergrown.

Abstract: Disclosed herein are methods of treating a tumor in a subject, including administering to the subject one or more miRNA nucleic acids or variants (such as mimics or mimetics) thereof with altered expression in the tumor. Also disclosed herein are compositions including one or more miRNA nucleic acids. In some examples, the miRNA nucleic acids are modified miRNAs, for example, and miRNA nucleic acid including one or more modified nucleotides and/or a 5?-end and/or 3?-end modification. In particular examples, the modified miRNA nucleic acid is an miR-30a nucleic acid. Further disclosed herein are methods of diagnosing a subject as having a tumor with altered expression of one or more miRNA nucleic acids. In some embodiments, the methods include detecting expression of one or more miRNAs in a sample from the subject and comparing the expression in the sample from the subject to a control.

Abstract: An antioxidant for use in treatment for a radiation-induced bystander effect to a transplanted cell in a host is provided. The antioxidant is N-acetyl-L-cysteine, sulforaphane or resveratrol, or a combination thereof. The RIBE on transplanted human hematopoietic cells impaired the long-term hematopoietic reconstitution of human HSCs as well as the colony-forming ability of HPCs, and the RIBE-affected human hematopoietic cells showed enhanced DNA damage responses, cell cycle arrest and p53-dependent apoptosis, mainly due to oxidative stress. Taken together, these findings suggest that RIBE impairs human HSCs by oxidative DNA damage. The present disclosure provides definitive evidence for RIBE in transplanted human HSCs and further justifies the necessity for conducting clinical trials to assess the ability of multiple antioxidants to improve the efficacy of HSC transplantation for patients with hematological or non-hematological disorders.

Abstract: A separation device with two-stage gas-liquid mixture and conical spiral fields is provided. A first-stage uniform mixer performs first-stage gas-liquid crushing and uniform mixing process by an outer micropore ceramic pipe, a middle micropore ceramic pipe and an inner micropore ceramic pipe and crushes large bubbles in the gas-liquid two-phase flow into small bubbles. A second-stage uniform mixer performs second-stage gas-liquid crushing and uniform mixing process. A whirlpool-making gas collector adjusts the gas-liquid uniform mixing flow obtained after two-stage gas-liquid uniform mixing into hollow-core type high-speed two-phase spiral flow. A conical degasser performs gas-liquid efficient separation operation in a high-speed conical spiral field.

Abstract: A charging port protection apparatus and a terminal related to the field of terminal technologies are provided, including a first detection circuit, a first discharge circuit, a second detection voltage, and a switch circuit. The first detection circuit generates a first detection voltage based on a peak voltage of an input voltage. The first discharge circuit discharges the peak voltage based on the first detection voltage. The second detection circuit generates a second detection voltage when the input voltage is greater than a first threshold. The switch circuit disconnects the input voltage based on the second detection voltage. This implements not only protection against an ESD and EOS peak voltage, but also protection against a high-voltage direct current. The protection against the peak voltage and the protection against the high-voltage direct current are not mutually limited, which implements protection against impact of electrical over-stress in various forms.

Abstract: A method and device for controlling a robot, and a robot. The device detects whether there is an article being put into or taken out from a storage container of a robot, and if it is detected that an article is put into or taken out from the storage container, an information list is updated according to the article being put into or taken out, the information list recording relevant information about articles in the storage container.

Abstract: A method for preparing bismuth oxide nanowire films by heating in an upside down position includes: washing a substrate, and fixing the substrate to a substrate support in a magnetron sputtering system in a position where an electrically conductive surface of the substrate faces downwards; placing a bismuth target, which is adhered to a copper backing plate, on a sputtering head in the magnetron sputtering system; performing direct current magnetron sputtering to form a bismuth film on the electrically conductive surface of the substrate; and regulating a heating temperature to maintain the bismuth film in a semi-molten state, and providing a predetermined oxygen gas concentration to form the bismuth oxide nanowire film.

Abstract: A high-density integrated magnetic receiving antenna for electromagnetic exploration, including a multi-layer PCB. A PCB coil of multiple turns are drawn on each conductive layer of the multi-layer PCB, and is continuously wound on each conductive layer of the multi-layer PCB. PCB coils respectively on adjacent conductive layers are connected end to end via a conductive via or a conductive via and a jumper wire such that the PCB coils on each conductive layer of the multi-layer PCB are connected in series to form the high-density integrated magnetic receiving antenna with multiple turns.

Abstract: A device for reducing turn-off time of a transient electromagnetic transmitting signal includes a transmitting coil, a first electronic switch to control connection mode of the transmitting coil and a second electronic switch configured to form a bridge arm. The transmitting coil is a twisted pair including a first wire and a second wire. The first wire is connected to one end of the second electronic switch. The other end of the second electronic switch is connected to one end of the first electronic switch. The other end of the first electronic switch is connected to the second wire. The connection mode of the transmitting coil includes head-to-head connection, head-to-tail connection and tail-to-tail connection between the first wire and the second wire. The first wire and the second wire are connected to form a transmitting loop.