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103 results about "Anthropogenic factor" patented technology

Anthropogenic Factors. The term "anthropogenic" means of, relating to, or involving the impact of humans on nature. Because human practices are the source of many water-quality contaminants in the YRB, they must be described as an integral part of the environmental setting.

Device suitable for studying phototactic ethology of minitype fishes

InactiveCN102613127AAvoid interferenceClearly describe the course of actionPisciculture and aquariaRemote controlFishery
The invention relates to a device suitable for studying phototactic ethology of minitype fishes, and is characterized in that an aquarium box is placed in a dark chamber; the outer part at one end of the aquarium box is provided with an adjustable light source; the bottom of the aquarium box and other parts except for the periphery of the adjustable light source end are not light transmitting; the aquarium box is internally provided with a dividing ruler; the dividing ruler divides the aquarium box into a plurality of regions according to the illumination intensity attenuation direction, and the different regions are divided by a division scale region; a guide rail is arranged deadly above the aquarium box; the guide rail is provided with a plurality of cameras corresponding to the center and the boundary of each region; an underwater illuminometer is suspended on the guide rail, and can move randomly in the aquarium box along the length direction of the guide rail; and a computer remote control terminal is connected with the cameras, and is used for controlling the moving of the cameras and tracking and recording the swimming paths of the fishes. The device suitable for studying phototactic ethology of the minitype fishes provided by the invention can study the phototactic behavior of the minitype fishes, and can remove the interference of artificial factors, thus the studied results are accurate and reliable.
Owner:FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI

Automatic test equipment of boeing series aircraft audio management unit and method thereof

The invention discloses an automatic test equipment of a boeing series aircraft audio management unit and a method thereof. The test equipment comprises a PXI instrument, an adaptor and an industrial control computer which are connected with other. The test equipment and the method utilize the industrial control computer for operating an automatic test program set, controlling an audio signal source in the PXI instrument and selecting a call signal source for generating various signals which are needed by test and outputted to a tested equipment through a switch matrix card, a digital input-output card and the adaptor; simultaneously the output of the tested equipment is outputted to a data collecting card in the PXI instrument through the adaptor so as to collect data which is then transmitted to the industrial control computer; and a test result is judged through data analysis and treatment of the automatic test program set, thus not only avoiding the trouble of borrowing an audio control panel to match the test and a special call signal source, but also reducing test time and greatly reducing error caused by anthropogenic factor through automatic test; as a result, the test equipment and the method undoubtedly become new test trends of the boeing series aircraft audio management unit.
Owner:CIVIL AVIATION UNIV OF CHINA

Transfer machine and flocking removing and drying system with same

The invention relates to a transfer machine which comprises a base, a horizontal motor, a sliding block, a rotary motor, a lifting motor and a screw rod. The guide rail horizontal motor is erected on the upper end face of the base and is in transmission connection with a first belt pulley. A first synchronous belt is wound on the outer peripheries of the first belt pulley and a second belt pulley. The sliding block is connected with the first synchronous belt. The rotary motor is arranged on the sliding block. The power output end is connected with a worm. A tray and a worm gear rotate synchronously. The worm gear is in transmission connection with the worm. The power output end of the lifting motor is provided with a driving wheel. The screw rod is arranged on the tray. The bottom end of the screw rod is provided with a driven wheel. A second synchronous belt is wound on the outer peripheries of the driving wheel and the driven wheel. A lifting shaft is hollow and provided with a thread sleeve. A mechanical gripper is arranged on the lifting shaft. The invention also discloses a flocking removing and drying system with the transfer machine. The transfer machine and the flocking removing and drying system with the transfer machine have the advantages that the working efficiency is improved; the labor intensity is reduced; the flocking damage or dropping, which is caused by anthropogenic factors, is reduced; and the product quality can be ensured.
Owner:GUANGZHOU MINHUI AUTOMOBILE PARTS

Method for identifying low-temperature resistance of wild cotton in seedling stage

The invention belongs to plant physiology and particularly relates to a method for identifying low-temperature resistance of wild cotton in a seedling stage. The method comprises the following steps: 1) sulfuric acid delinting and incision treatment on seeds; 2) germination accelerating treatment; 3) seedling culture: common seedlings in a 3-5-leaf stage with consistent growth vigor are selected; 4) low-temperature stress treatment: low-temperature stress treatment closer to natural conditions is selected; 5) low-temperature resistance level classification: grading is performed according to damaged conditions of cotton seedlings, and resistance levels of the wild cotton are classified. According to the method, severe low-temperature stress treatment is performed in the seedling stage when the wild cotton is most sensitive to low temperature, so that a low-temperature-resistant cotton material truly with higher resistance level can be screened out; grading is performed according to damaged conditions of cotton leaves, objective classification is performed, and errors caused by human factors are reduced greatly. The method is not limited by seasons, can be used for identifying mass materials and is easy to popularize and use.
Owner:INST OF COTTON RES CHINESE ACAD OF AGRI SCI

Active temporary speed-limit tag and signal processing method thereof

InactiveCN102034128AHigh power consumptionSolve the problems of recognition distance, aging, fixation, etc.Sensing record carriersRecord carriers used with machinesTransceiverHigh energy
The invention discloses an active temporary speed-limit tag and a signal processing method thereof, which is used for solving the technical problem of the traveling safety of a train and the low energy consumption of the active temporary speed-limit tag. The active temporary speed-limit tag comprises a microprogrammed control unit (MCU), a radio frequency transceiver, a clock module, a matching network, a microstrip antenna, a sensor awakening circuit, a sound sensor, a vibration sensor, an energy detection module, a high-energy charging battery, a battery charging circuit and a battery protective circuit. The signal processing method comprises the following five state circulating processing courses: a deactivating state, a sleeping state, a data reading state, a data transmitting state and a receiving waiting state. Moreover, the invention also provides a sleeping activating algorithm (WS) for the active temporary speed limit and a scheme for installing the active temporary speed-limit tag on a railway. Compared with the existing temporary speed limit technique of the train, the invention has the advantage that the potential safety hazards of the train such as reading mistake or reading leakage and the like caused by anthropogenic factors are solved by utilizing an automatic identification technique.
Owner:SOUTH CHINA UNIV OF TECH

Method for quantitatively evaluating quality of dairy products

The invention relates to a method for quantitatively evaluating quality of dairy products and belongs to the field of food science. In the operational method, the mixing synthetic method is utilized to study the quantitative evaluation of the quality of UHT milk, sterilized milk, and fermented milk; three food quality evaluation indexes are selected, and the detection method is standardized; the standardized detection results are subjected to special so as to obtain the combined weightings of color, flavor and texture which are 0.280,0.385 and 0.334 for the UHT milk respectively, 0.240,0.383 and 0.378 for the sterilized milk respectively, and 0.239, 0.383 and 0.377 for the fermented milk respectively; and the index detection of each sample is subjected to positive and zero dimension treatment and mixing synthetic method statistical analysis, and finally the quantitative evaluation result of each sample is obtained. By comparing the evaluation result with the conventional marked evaluation result, the result obtained by the novel method is based on the strict mathematical statistics and realizes overall comprehensive quantization of various indexes, so that the randomness and the blindness are eliminated, and the defects of bigger influence of human factors and stronger randomness existing of the conventional evaluation method are effectively overcome.
Owner:SHANDONG AGRICULTURAL UNIVERSITY +1

Method used for inducing differentiation of human multipotential stem cells into retinal progenitor cells

The invention belongs to the field of biomedicine, and specifically relates to a method used for inducing differentiation of human multipotential stem cells into retinal progenitor cells. According to the method, human embryonic stem cells or human induced multipotential stem cells are induced in a medium containing N2, and then are delivered into a retina induction medium containing neural basis culture medium, knockout serum replacement and nicotinamide so as to obtain the retinal progenitor cells. The method is capable of increasing differentiation rate of human multipotential stem cells into retinal progenitor cells; and the retinal progenitor cells obtained via differentiation can be used for transplantation therapy of irreversible degenerative diseases of retinal neurons, such as age-related macular degeneration and retinitis pigmentosa, and also can be used for iPS cells sourced from patients as cell models in drug screening and gene interference experiments. Compared with existing technology, small molecule compounds used in the method are less, so that influences caused by non-anthropogenic factors are avoided effectively, and yield of obtained optic cup-like cells is obviously higher than that of existing induced differentiation methods.
Owner:FUDAN UNIV

Mud shale brittle nature experimental device and experimental analysis method thereof

The invention relates to a mud shale brittle nature experimental device and an experimental analysis method of the mud shale brittle nature experimental device. The device comprises a pair of guide upright posts, a transverse guide post, a longitudinal guide post and a drop hammer, wherein sliding slots are respectively formed on the side walls of the pair of the guide upright posts along the vertical direction, the two ends of the longitudinal guide post are respectively connected with a driving module and the drop hammer, the transverse guide post and the longitudinal guide post are connected into a whole, and the two ends of the transverse guide post are movably arranged in the sliding slots. The experimental method comprises the following steps: enabling the drop hammer to drop to smash a rock sample to be tested, sequentially screening scrap into a plurality of groups by using different specifications of screens, figuring out the weight percentage of the group with the smallest specification by a weight method, figuring out the total newly increased surface area of the sample after smashing by using a surface area method and further analyzing the brittle nature of the rock sample to be tested; and compared with the prior art, the device provided by the invention has the advantages of loose requirements on appearance of the rock sample to be tested, simplicity and convenience in operation, high precision and small influence caused by human factors, and a new concept is provided for evaluation and research of mud shale.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for identifying aphis resistance of chrysanthemum by artificial inoculation

The invention provides a method for identifying aphis resistance of chrysanthemum by separation of artificially inoculated individuals, and belongs to the field of resistance breeding. A plant which is as high as 10cm is selected for transplanting, the aphides are inoculated to stem ends or folded young leaves of the identifying plant by a brush pen, and the plant is covered by a cylinder-shaped cover immediately, so that the plant and the aphides are both under the condition of normal growth and breeding. After inoculated for 3 weeks, the number of aphides is counted by observation, and the comparison identification on the aphis resistant capability of different chrysanthemum materials is made according to the breeding multiplying power of the aphides. The method has the advantages of common raw materials, simple and easy operation, low cost, strong operability and good practicability; the test results are hardly affected by environmental or artificial factors; the method also makes the chrysanthemum breeding possible by screening out germ plasm resources with strong resistance to the aphides; simultaneously, the method can be used for the early identification of aphis resistant breeding materials; moreover, the method greatly shortens the time needed by aphis resistant breeding of the chrysanthemum and ensures the trueness, science and stability of the aphis resistance of bred varieties.
Owner:NANJING AGRICULTURAL UNIVERSITY

Method for rapidly application of esteya vermicola solid culture product in prevention and treatment of pine wilt disease

ActiveCN109370949ASolve difficult problems that cannot be directly applied to biological controlImprove biological activityBiocideBacteriaAdhesiveMaterial resources
The invention discloses a method for rapidly application of an esteya vermicola solid culture product in prevention and treatment of a pine wilt disease, and belongs to the technical field of biological control. According to the method, a certain proportion of nutrient substances, a protective agent, a growth stimulating factor, a spore stimulation factor and an adhesive are added into the solid culture product and are uniformly mixed, then a harmless plasticizer is added into the solid culture product, the solid culture product is pressed and processed into a long-rod-shaped product, finallya layer of wafer is wrapped around the surface of the long-rod-shaped product, the whole production process is isolated from the outside environment, manual operation is not needed, and therefore pollution caused by human factors or exposure to the external environment is reduced; during application, only two operation links of drilling and knocking-in are needed, a high-pressure plug does not need to be used, and therefore manpower and material resources are greatly reduced; meanwhile, the storage life of the product is greatly prolonged, and the biological activity of the product is remarkably improved; and the problem that a solid culture product cannot be directly applied to biological control can be solved. The method has the advantages of being simple in operation and low in cost when being used for the prevention and treatment work of woodland.
Owner:成昌根

Ecological drought monitoring and evaluating method

ActiveCN112765808AComprehensive and accurate assessmentMeasurement devicesDesign optimisation/simulationHydrometryMulti source data
The invention discloses an ecological drought monitoring and evaluation method, which comprises the following steps: firstly, collecting multi-source data of a research area and constructing an ecological drought disaster database, then calculating hydrometeorological and hydrological drought indexes according to the multi-source data, extracting hydrological drought characteristics, then carrying out space-time law and evolution characteristic analysis on the hydrological drought characteristics, monitoring the ecological drought of the research area according to an analysis result, constructing a Biome-BGC model to calculate the net primary productivity of an ecological system, and finally obtaining the comprehensive ecological system productivity of the research area by adopting a random forest model, so as to achieve the ecological drought assessment of the research area. The comprehensive ecological system productivity value obtained by adopting the random forest model not only considers ecological factors, but also comprises factors causing hydrological drought and human factors, so that the evaluation of ecological drought is more comprehensive and accurate, and the problems of few considered factors and difficulty in parameter adjustment of a traditional ecological drought loss evaluation method are solved.
Owner:YELLOW RIVER ENG CONSULTING +1

Fingerprint spectrum of butterfly-leaf platycladus orientalis SSR marker and construction method and application thereof

The invention discloses a fingerprint spectrum of a butterfly-leaf platycladus orientalis SSR marker and a construction method and application thereof. The invention provides a set of primers, which are composed of a primer pair 1 to a primer pair 8; and the nucleotide sequences of the primer pair 1 to the primer pair 8 are respectively sequence 1 to sequence 16 in a sequence table. The SSR markersuitable for butterfly-leaf platycladus orientalis is developed based on platycladus orientalis transcriptome sequencing, and the construction method and application of the fingerprint spectrum of the butterfly-leaf platycladus orientalis SSR marker are established. Compared with morphological detection, the technology has the advantages that the identification result is not affected by climate,environment, human factors and tree age, identification and differentiation can be effectively carried out in the seedling stage, the identification time is short, the identification accuracy is high,the detection efficiency is high, the stability is good, and the technology has important significance and good application effect on genetic specificity identification of butterfly-leaf platycladusorientalis and other platycladus orientalis germplasm.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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