22 results about "Diatom" patented technology

The application discloses a kind of multicomponent plankton algae concentration measurement method based on fluorescence spectrum stratification partitioning.The application belongs to the field of marine aquatic ecological environment monitoring technology.The algorithm will unknown to be analyzed mixed three-dimensional fluorescence spectrum according to the following stratification partitioning analysis idea to be analyzed.First layer: full spectrum is involved in analysis, and the purpose is to analyze cyanophyta concentration and cryptophyta concentration, and obtain the difference spectrum in full spectrum region.Second layer: partitioning analysis, take the region containing effective spectral feature to participate in analysis, and the purpose is to analyze chlorophyll a concentration of green algae, diatom, dinoflagellate and yellow algae.The algorithm is significantly superior to common analysis algorithm in reducing misidentification, especially in processing such as diatom, dinoflagellate and yellow algae with high similarity living body fluorescence spectrum.

The invention belongs to the technical field of planktonic diatom sampling and microbiological detection pretreatment, and particularly relates to lake surface planktonic diatom sampling equipment which comprises a handheld rod, a weight moving mechanism, a water entering mechanism and an air supporting mechanism. The weight moving mechanism comprises a limiting assembly and a bottom suction assembly, the limiting assembly is arranged at one end of the handheld rod, and the bottom suction assembly is arranged at the other end of the handheld rod; the bottom suction assembly is arranged on the limiting assembly, the water entry mechanism comprises a push-out assembly and a sampling assembly, the push-out assembly is arranged at the end, away from the limiting assembly, of the handheld rod, and the sampling assembly is arranged on the side, away from the handheld rod, of the push-out assembly. According to the lake surface layer floating diatom sampling equipment, the net body can be kept vertically extending in water, it is ensured that a net opening always faces the water flow direction, the interior of the collecting net has the supporting capacity, and it is ensured that the effective water filtering area is stable.

1. Name of the product in this design: Draining Shelf (Diatomaceous Earth A). 2. Purpose of this design: This design is used for placing items and for draining water. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a diatomaceous earth-supported SnO2 / g-C3N4 nanocomposite photocatalyst, its preparation method, and its applications. This invention successfully prepared a visible light-responsive SnO2 / g-C3N4 / Dt composite photocatalyst via a hydrothermal method combined with calcination. This catalyst exhibits high purity, good crystallinity, high specific surface area, and a mesoporous structure. Its microstructure consists of a well-dispersed binary heterostructure composed of plate-like SnO2 and layered g-C3N4 on a Dt substrate. After 60 min of illumination, the degradation rates of MO, SEX, and TCH reached 94.29%, 99.63%, and 93.31%, respectively, significantly outperforming the corresponding single-component and binary composite materials, as well as related materials in existing technologies. The photocatalytic degradation process follows a pseudo-first-order reaction kinetic model, and its reaction rate constant k is 3.5 to 4.1 times higher than that of single-component and binary composite materials. •O2 ‑ •OH and h + These are key active species generated during the degradation process. Furthermore, this composite material exhibits excellent recyclability and stability, making it an environmentally friendly, inexpensive, and highly efficient photocatalyst with significant potential for practical industrial applications.

The invention relates to the field of microalgae sedimentation, in particular to a composite material for accelerating diatom sedimentation and a method thereof. The composite material comprises chitosan and clay, wherein the mass ratio of the chitosan to the clay is (1: 5)-(1: 15). The sedimentation method comprises the following steps: adding the composite material into diatom liquid, culturing for a certain time, and collecting the diatom. By implementing the scheme, the recovery rate of the diatom is improved.

1. Name of the product in this design: Draining Shelf (Diatomaceous Earth B). 2. Purpose of this design: This design is used for placing items and for draining water. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention relates to the technical field of cementing materials, in particular to a diatomite and SAP modified alkali-activated slag cementing material and a preparation method thereof. The invention provides a diatomite-coated SAP modified alkali-activated slag cementing material. The diatomite-coated SAP modified alkali-activated slag cementing material is prepared from the following raw materials in parts by mass: 100 parts of slag, 0.01-0.9 part of diatomite-coated SAP, 30-35 parts of an alkali activator, 35 parts of water and 0.8-1.2 parts of a water reducing agent, the preparation method of the diatomite-coated SAP comprises the following steps: sequentially adding an initiator, a cross-linking agent and calcined diatomite into a mixed solution of sodium acrylate and acrylamide, then carrying out ultrasonic dispersion for 2 hours to obtain a uniform dispersion, and carrying out a stirring reaction to obtain blocky diatomite-coated SAP; and finally, crushing, washing, carrying out suction filtration, drying and grinding. By adopting the diatomite-coated SAP, the shrinkage performance of the cementing material is improved on the premise of ensuring the strength of the cementing material.

The present application relates to a kind of diatom small target detection method and device for drowning diagnosis, the method includes: S1: collection diatom image dataset, image and format are handled;S2: utilize multilayer convolution extraction image feature, generate multi-scale feature map;S3: construct feature enhancement and selection module SFE strengthen the response of degenerative area and strengthen edge information, generate boundary enhancement feature map;S4: construct multi-scale positive and negative convolution module MPNC to local enhancement is carried out to boundary enhancement feature map, generates enhancement feature map;S5: utilize weighted fusion to carry out cross-scale information integration to different resolution enhancement feature map, and output target boundary frame and corresponding class prediction result.By the present application, it can effectively solve the problem that small target diatom is weak in feature expression in detection, and detection effect is poor under complex background.The present application is as a kind of small target diatom detection method and device based on multi-scale feature perception, can be widely applied in microscopic image processing, classification and other fields.

The invention discloses a method for preparing a magnetic porous material by using diatomite containing organic matters and iron impurities, which is suitable for treating low-grade diatomite containing more organic matters and iron mineral impurities and diatomite tailings obtained by performing magnetic separation beneficiation treatment on the diatomite. The method comprises the following steps: firstly, carrying out size grading on diatomite, removing coarse-grained quartz and fine-grained clay impurities to obtain an intermediate product mainly composed of organic matter-containing diatomite shells and iron-containing impurities, and controlling the organic matter content of the product to be 10-20% (in terms of weight loss before roasting); then, through a temperature-controlled and oxygen-controlled roasting process, organic matters on the surface of the diatomite are incompletely combusted at a limited temperature to form a biochar layer, and meanwhile, iron impurity minerals are converted into magnetite by using reducing gas generated by combustion of the organic matters. The method has the advantages of low raw material cost, no need of additional addition of chemical reagents, no need of pretreatment steps such as granulation and ball milling, and low roasting energy consumption. The magnetic adsorption material prepared by the method not only keeps the porous structure of the diatom shell, but also has the porous biochar and the magnetic iron oxide component, has efficient adsorption and purification capacity on harmful cations in water, is easy to recycle through an external magnetic field, and is environment-friendly and energy-saving. The adsorbent can be widely used in the field of adsorption treatment of related environmental pollutants.

The application discloses a diatom fossil image segmentation extraction method based on a radial contour pre-training ViT, which comprises the following steps: generating a radial contour geometric data set with a spatial organization rule, pre-training a ViT backbone network to obtain geometric prior features; loading the pre-training weight to a target detection framework, reconstructing a multi-scale feature pyramid through a feature adaptation module; fine-tuning the network by using a real diatom data set with polygon annotation and a multi-task joint loss function; inputting a to-be-processed microscopic image into a model to infer a binary mask, and performing pixel-by-pixel spatial filtering to extract a fossil monomer image. The application effectively eliminates complex microscopic background interference, and realizes high-precision segmentation and zero-background automatic extraction of diatom fossils.

The present application relates to the field of suspended offshore wind power generation, aiming at the fact that the prior art cannot meet the anchoring of diatom mud seabed, the erection of suspended platform and the operation and maintenance in low temperature environment. On the one hand, the anchoring stress is reduced by using hard pipe rigid connection tower foundation to move down the anchoring center and reduce the anchoring point stress. For the diatom mud seabed without adhesion, the array anchoring method is proposed. For the diatom mud seabed, resistance plates are installed between anchor chains to form a continuous soil plug effect array. For the soft soil medium hardness seabed, a small amount of anchoring array such as 3*3 dragging anchoring point array is used to obtain horizontal load force. The traditional platform relies on huge gravity to maintain balance, transportation and material cost is high, the present application uses underwater hard pipe and wind turbine integrated structure to stabilize the platform, and the tower can be designed to rotate and lie down, which can realize batch loading transportation, cooperate with special maintenance ship and realize on-site maintenance in extremely low temperature. In summary, the present application reduces the cost of suspended wind turbine power generation from the aspects of shortening the operation and maintenance mileage, batch transportation and reducing the self weight.

This invention provides a modified material based on 99% diatomaceous earth, its preparation method, and its application, relating to the field of water treatment technology. The modified material based on 99% diatomaceous earth of this invention, by weight, comprises: 75-85 parts 99% diatomaceous earth, 8-15 parts ion-selective modifier, 3-8 parts hydrophilic modifier, 2-5 parts structure regulator, and 1-3 parts crosslinking agent. The 99% diatomaceous earth of this invention, after treatment with the structure regulator, ion-selective modifier, and hydrophilic modifier, yields a material suitable for seawater desalination. This material exhibits high desalination rate, low energy consumption, and anti-scaling properties, solving the problems of poor desalination effect and easy contamination associated with traditional seawater desalination materials. The functional material of this invention achieves a NaCl removal rate of ≥99.5% from seawater, with a post-desalination product water salinity ≤500 mg / L and energy consumption ≤0.4 kWh / m³. 3 It is suitable for seawater desalination in islands, coastal areas, ships, and drilling platforms, and has good application prospects.

This invention relates to a method for detecting drowned diatoms based on efficient feature extraction and fusion. The method includes: S1: acquiring diatom images and preprocessing them to generate input data; S2: optimizing the network structure of a diatom detection model based on the preprocessed input data to obtain a predicted distribution; S3: optimizing the loss function of the diatom detection model based on the predicted distribution and the true values; S4: outputting the diatom species in the image based on the optimized diatom detection model. By using this invention, diatom images acquired under a scanning electron microscope can be detected and classified efficiently. This invention overcomes the detection interference problem caused by complex backgrounds in diatom images and the low detection accuracy of slender diatom targets.

The application discloses a kind of air purification compositions containing diatom pure negative ion particles and preparation method thereof, belong to air purification technical field, including first component and second component, the first component includes the following weight fraction of raw material component: diatomite 35~45 parts, tourmaline 15~20 parts, nano photocatalyst 6~9 parts;The second component includes the following weight fraction of raw material component: photocatalyst 6~9 parts, CLO purification factor 5~8 parts, sea sponges 20~25 parts, attapulgite 35~45 parts, diatomite 20~25 parts;The mass ratio of the first component and second component is 3~4:1.The application has the adsorption and decomposition function to harmful substance in air, is not easy to adsorb saturation, can be reused, also will not produce secondary pollution;Small particle material bagging device is used in its preparation method, and the operation is simple, and application is convenient, can effectively prevent material leakage when filling.

The invention relates to a drowning diatom rotation detection method and device based on double-flow axial perception, and the method comprises the steps: S1, collecting a diatom image, completing the marking of a rotation detection frame and the division of a data set, and carrying out the adaptive enhancement of the diatom image; s2, constructing a four-axial convolution module QA-Conv to extract a multi-axial shallow morphological feature map of the diatom target; s3, constructing a cross axial gating module CAG, and extracting middle-layer and deep-layer semantic feature maps of the diatom target by using C3K2 and CAG modules; and S4, fusing the feature map by using a bidirectional pyramid structure, and outputting a rotation detection result through a strip-shaped convolution enhanced head SCEH. The invention aims to overcome the problems of complex background noise interference, difficulty in anisotropy characterization of a slender target and low rotation positioning precision in diatom detection, and is suitable for the microscopic analysis fields of forensic drowning diagnosis, water quality monitoring and the like.

The invention relates to a live diatom bait production raft frame for fishing-light complementary abalone breeding and application of the live diatom bait production raft frame. Buoyancy is provided through the floating frame, the seedling collecting plate bearing frame is used for placing a standardized seedling collecting plate, the light supplementing unit converts and transmits light with specific wavelength through a solar fluorescent light gathering plate and a light guide element, the water distribution pipe is responsible for directional water spraying, and the problem that diatom is difficult to naturally grow due to insufficient light of a water area covered by a photovoltaic panel is solved through combination of the components. According to the method, the core pain point restricting fishing-light complementary development of abalone breeding is solved, high-added-value breeding industrialization in a photovoltaic area becomes possible, and the comprehensive output value of the unit water area can be greatly increased.

This invention discloses a method for determining the continuity characteristics of river ecosystems, comprising the following steps: S1, firstly, selecting a river section within the river ecological loop area and setting up sampling points within that section; S2, collecting water samples to detect aquatic environmental data and identifying phytoplankton; S3, classifying the phytoplankton at each sampling point according to the total community, diatoms, green algae, and other phyla; S4, directly analyzing the spatiotemporal characteristics of the aquatic ecosystem using the Jaccard similarity index and the Bray-Curtis similarity index. This invention classifies phytoplankton communities according to four indicators: total community, diatoms, green algae, and other phyla, and uses the Jaccard similarity index and the Bray-Curtis similarity index, along with their indicative functions for the aquatic environment, for comprehensive analysis. This method is highly representative, resulting in more accurate results and providing important scientific basis for river aquatic ecological environment protection, post-dam construction ecological restoration, and the development of effective management measures.

The utility model discloses a diatom original soil calcination auxiliary device, including rotary kiln main part, feed inlet and support base, the top of rotary kiln main part inner cavity is provided with the scraper blade, the front side and the rear side of support base top are respectively provided with the first support frame and the second support frame, the front side and the rear side of scraper blade are both provided with the support piece, and the support piece is provided with the feed inlet. Knocking devices used in cooperation with the scraping plate are arranged on the opposite sides of the two supporting pieces, and a control device used in cooperation with the knocking devices is arranged on the top of the first supporting frame. According to the rotary kiln, the scraping plate, the knocking device and the control device are matched for use, so that the problems that when an existing rotary kiln is used, most of the rotary kilns do not have the function of cleaning the inner wall, powder and agglomerated materials can be attached to the inner wall of the rotary kiln in the material processing process, and consequently the powder is wasted, and the production cost is reduced are solved. And the material heating efficiency is also influenced.

The present application relates to the technical field of diatomite mud production, and particularly relates to an automatic batching equipment for diatomite mud production and an operation method thereof, which comprises a fixed disc, a feeding pipe fixedly connected to the top of the fixed disc, and a batching tank arranged at the top of the feeding pipe. The present application can realize real-time monitoring of the weight of materials through the built-in sensor of the weighing plate, accurately control the opening and closing of the valve of the batching tank in cooperation with the external controller, ensure accurate proportioning of each component according to the formula, have small error, guarantee the stable product quality of diatomite mud, and realize linkage of the crushing mechanism when the weighing plate discharges materials, so that the crushing roller is driven by the gear plate to rotate at high speed, the falling materials are instantaneously crushed by extrusion, the moisture absorption and caking are effectively broken, the crushed materials are uniformly delivered to the mixing hopper in a circumferential direction through multiple conveying belts, the accumulation and component segregation caused by traditional centralized material falling are avoided, and the dynamic secondary mixing and forced discharge are realized through the synergistic effect of the stirring rod and the spiral roller, so that the mixing efficiency and uniformity are greatly improved.

The invention discloses an application method of iron-intercalated montmorillonite in promotion of diatom outbreak in iron-deficient seawater. Belongs to the technical field of marine fertilization. The application method comprises the steps that iron intercalation montmorillonite is applied to iron-deficient seawater containing diatom, and the iron-deficient seawater is seawater with the iron element concentration lower than 0.3 nM. According to the method, silicate limitation and iron element deficiency in seawater can be overcome, the multiplication capacity of diatom in iron-deficient seawater is remarkably improved, the primary productivity and the carbon content of diatom are improved, and the carbon flux output to deep sea is increased.

This utility model discloses a mixing vessel for the production of dry diatomaceous earth powder. Its structure includes a mixing vessel, with a drive motor and control switch installed on the right side. The bottom of the mixing vessel is supported by a support frame. Bearings are located on both sides inside the mixing vessel, and a spiral stirring rod is installed in each of the two bearings. A feed inlet is located at the top of the mixing vessel, and a discharge device is located at the bottom. The discharge device has a discharge pipe, which is fixedly installed on the bottom end face of the mixing vessel. A servo motor is located at the bottom of the discharge pipe, and the top of the servo motor is fixedly connected to a guide screw. A sealing ring is located at the bottom of the discharge pipe, and the sealing ring is transitionally connected to the bottom of the guide screw. This utility model utilizes the servo motor to drive the guide screw, guiding the stirred material into the discharge pipe. The material then slides downwards due to its own inertia, thus enabling automatic material discharge.