Abstract: A composite biochar for controlling heavy metal pollution and a process for producing the same, in particular enrichment of heavy metals such as arsenic and lead in soil with centipede grass, thereafter centipede grass is sintered with hydroxyapatite, sepiolite and chitosan, and compounded with microorganisms to produce said composite biochar; through the process of the present invention, heavy metals such as arsenic and lead are stably enriched or coated in said composite biochar, significantly reducing the potential hazard of arsenic and lead to the environment, and also providing new developmental ideas for treating heavy metal biomass.

Abstract: A porous biochar for improving heavy pollution and a method for producing the same. Said porous biochar is prepared as follows: arrowhead, which has excellent enrichment of lead, is used to absorb heavy metal lead in polluted water or artificial wetlands, simultaneously absorb heavy metal cadmium, thereafter is dried and treated as a biomass, and then the biomass is calcined in stages with a passivating agent in a high temperature environment, so as to heavy metals such as lead and cadmium be stably coated or enriched in a biochar, which is mixed with Pseudomonas aeruginosa having high resistant, to obtain the porous biochar; the porous biochar has high specific surface area, high porosity and excellent mechanical properties, is very stable under different acid-base environments and oxidizing conditions.

Abstract: A computerized simulation validating method for a full-scale distribution network single phase-to-ground fault test is implemented by simulating a full-scale test system with external quantities being controlled to be conformant and validating the full-scale distribution network single phase-to-ground fault test based on a conformance check result between the internal quantities of the field testing and the internal quantities of the simulation testing. The simulation validating method for a full-scale distribution network single phase-to-ground fault test improves normalization and conformance of the full-scale distribution network ground fault test. The computerized simulation validating system, apparatus, and medium for a full-scale distribution network single phase-to-ground fault test also achieve the benefits noted above.

Abstract: The present disclosure provides an ecological governance method based on erosion prevention and control for a gentle slope farmland and relates to the technical field of ecological governance of farmlands. The ecological governance method based on erosion prevention and control for a gentle slope farmland includes the following steps: sampling a gentle slope farmland to investigate erosion thereof; and determining erosion of a gentle slope cultivated land and selecting a corresponding recovery strategy based on a detection result of a sample, a soil quality index (SQI), and a comprehensive vegetation quality index (VQI), where the recovery strategy includes a natural recovery method and a biological-farming comprehensive recovery method; enclosing the gentle slope cultivated land, fallowing the gentle slope cultivated land and reducing tillage; exterminating insect pests and poisonous weeds in the enclosed area; and turning over straws under soil by a cultivator. The growth of poisonous weeds is inhibited.

Abstract: A method for implementing radar-communication integration of a vehicle, where the method includes obtaining, by a radar device of a first vehicle, a first communication message, modulating the first communication message into a first carrier signal, where an operating frequency of the first carrier signal is in an operating band of the radar device, sending a periodic radar signal, and sending the first carrier signal to a second vehicle within a time gap between sending of a radar signal in a current period and sending of a radar signal in a next period.

Abstract: This application provides a signal detection method and apparatus, and a radar system, which may be applied to the internet of vehicles, intelligent vehicle, autonomous driving, or intelligent driving field. The signal detection method (700) includes: A first radar transmits a first sounding signal in a first time period of a first frame (710). The first radar transmits a second sounding signal in a second time period of the first frame (720). The first radar receives reflected signals corresponding to the first sounding signal and the second sounding signal (730). The first radar determines a false alarm target based on a difference between a first distance-velocity spectrum and a second distance-velocity spectrum (740). The second sounding signal is a signal obtained through first phase code modulation based on the first sounding signal.

Abstract: Provided are keratin BD-4, an encoding nucleic acid molecule thereof, an expression vector, a host cell, and a pharmaceutical composition containing the keratin. The keratin BD-4 can be used for preparing drugs having antipyretic and analgesic, antitussive and expectorant, and antiepileptic effects.

Abstract: A method for implementing radar-communication integration of a vehicle, where the method includes obtaining, by a radar device of a first vehicle, a first communication message, modulating the first communication message into a first carrier signal, where an operating frequency of the first carrier signal is in an operating band of the radar device, sending a periodic radar signal, and sending the first carrier signal to a second vehicle within a time gap between sending of a radar signal in a current period and sending of a radar signal in a next period.

Abstract: A filter includes a top panel, a bottom panel, two first side panels located between the top panel and the bottom panel, and at least one diaphragm that has a metal surface. The two first side panels, the top panel and the bottom panel form a rectangular waveguide. The at least one diaphragm is connected to both the top panel and the bottom panel and separates a cavity of the rectangular waveguide into several cavity chambers that extend along an input/output direction of the rectangular waveguide. At least one of the first side panels is an adjustable side panel whose position relative to the diaphragm is adjustable.

Abstract: The present invention provides a data transmission method and apparatus in a time division duplex wireless data transmission system, and a system. The method includes: performing, by a transmission device in a timeslot corresponding to an idle frame, interference detection on a to-be-detected frequency band corresponding to the idle frame, obtaining an interference detection result, updating interference statistics, and switching, according to the interference statistics when interference to a current operating frequency band is greater than a preset threshold, the operating frequency band to a frequency band that meets a condition. Therefore, service interruption caused by interference detection is avoided.

Abstract: A method, an apparatus and a system for data transmission are provided. The method includes: receiving processed first microwave data information that is received through a microwave antenna; performing multiplexing through a preset rule on the first microwave data information and processed first radio frequency data information that is received through a base station antenna, and sending multiplexed information to a baseband unit, so that the baseband unit sends the first microwave data information to a microwave indoor unit. In the method, the apparatus and the system for data transmission, microwave data information and radio frequency data information are multiplexed, and then multiplexed information is transmitted together.

Abstract: A filter includes a top panel, a bottom panel, two first side panels located between the top panel and the bottom panel, and at least one diaphragm that has a metal surface. The two first side panels, the top panel and the bottom panel form a rectangular waveguide. The at least one diaphragm is connected to both the top panel and the bottom panel and separates a cavity of the rectangular waveguide into several cavity chambers that extend along an input/output direction of the rectangular waveguide. At least one of the first side panels is an adjustable side panel whose position relative to the diaphragm is adjustable.

Abstract: A method, an apparatus and a system for data transmission are provided. The method includes: receiving processed first microwave data information that is received through a microwave antenna; performing multiplexing through a preset rule on the first microwave data information and processed first radio frequency data information that is received through a base station antenna, and sending multiplexed information to a baseband unit, so that the baseband unit sends the first microwave data information to a microwave indoor unit. In the method, the apparatus and the system for data transmission, microwave data information and radio frequency data information are multiplexed, and then multiplexed information is transmitted together.

Abstract: The present invention discloses microwave communications devices. The microwave communications device includes: a first converting module, a second converting module, configured to perform mutual conversion between a baseband signal or an intermediate frequency signal and a microwave signal, where microwave signals received or output by the first converting module and the second converting module respectively have a same polarization direction or perpendicular polarization directions; and an orthomode transducer with three waveguide ports, configured to perform separation and synthesis of orthogonally polarized microwave signals, The microwave communications devices in embodiments of the present invention can, by providing dual channels and integrating an orthomode transducer inside the microwave communications device, increase a transmission capacity while improving equipment application flexibility, reducing installation complexity, and lowering costs.

Abstract: The present invention provides a method, an apparatus and a system for data transmission. The method includes: receiving processed first microwave data information that is received through a microwave antenna; performing multiplexing through a preset rule on the first microwave data information and processed first radio frequency data information that is received through a base station antenna, and sending multiplexed information to a baseband unit, so that the baseband unit sends the first microwave data information to a microwave indoor unit. In the method, the apparatus and the system for data transmission, microwave data information and radio frequency data information are multiplexed, and then multiplexed information is transmitted together.

Abstract: The present invention discloses microwave communications devices. The microwave communications device includes: a first converting module, a second converting module, configured to perform mutual conversion between a baseband signal or an intermediate frequency signal and a microwave signal, where microwave signals received or output by the first converting module and the second converting module respectively have a same polarization direction or perpendicular polarization directions; and an orthomode transducer with three waveguide ports, configured to perform separation and synthesis of orthogonally polarized microwave signals, The microwave communications devices in embodiments of the present invention can, by providing dual channels and integrating an orthomode transducer inside the microwave communications device, increase a transmission capacity while improving equipment application flexibility, reducing installation complexity, and lowering costs.

Abstract: A standing wave detection method, a standing wave detection apparatus, and a base station are disclosed. The method includes collecting, a feedback signal from a feedback path of a base station which uses a baseband multi-tone signal as a transmission signal; performing calibration on the feedback signal by using stored calibration data to obtain a reflected signal in the feedback signal; and obtaining a standing wave detection value according to the transmission signal and the reflected signal that is in the feedback signal.

Abstract: The present invention provides a method, an apparatus and a system for data transmission. The method includes: receiving processed first microwave data information that is received through a microwave antenna; performing multiplexing through a preset rule on the first microwave data information and processed first radio frequency data information that is received through a base station antenna, and sending multiplexed information to a baseband unit, so that the baseband unit sends the first microwave data information to a microwave indoor unit. In the method, the apparatus and the system for data transmission, microwave data information and radio frequency data information are multiplexed, and then multiplexed information is transmitted together.

Abstract: A standing wave detection method, a standing wave detection apparatus, and a base station are disclosed. The method includes collecting, a feedback signal from a feedback path of a base station which uses a baseband multi-tone signal as a transmission signal; performing calibration on the feedback signal by using stored calibration data to obtain a reflected signal in the feedback signal; and obtaining a standing wave detection value according to the transmission signal and the reflected signal that is in the feedback signal.

Abstract: The present invention discloses the use of potassium 2-(?-hydroxypentyl) benzoate in the manufacture of medicaments for preventing, relieving or treating senile dementia diseases or symptom, and for relieving oxidative stress injury in brain tissue, increasing neural function of choline, protecting neuron and/or raising the content of brain nerve growth factor. The present invention also discloses a pharmaceutical composition comprising potassium 2-(?-hydroxypentyl) benzoate in prophylactically or therapeutically effective dose, optionally, a pharmaceutically acceptable carrier and/or adjuvant.