33 results about "Bacterial types" patented technology

The invention provides a vegetable seedling and seedling strengthening microbial composition, a substrate and a preparation method, and belongs to the technical field of microbial agents. The invention provides a microbial composition for vegetable seedling culture, the microbial composition comprises a bacterial liquid of various bacteria, the types of the bacteria comprise bacillus subtilis, bacillus amyloliquefaciens, paenibacillus polymyxa and azospirillum brazilianum, and the bacteria have a synergistic effect, so that the seed germination time can be remarkably shortened, and the root length and the lateral root number can be increased. According to the invention, the microbial composition is used as a basis, the microbial composition, mushroom wastes, straws, fresh livestock and poultry manure and the like are subjected to closed fermentation to prepare the matrix for vegetable seedling culture, seeds can be directly planted in the matrix for vegetable seedling culture, the seed germination time can be further shortened, and meanwhile, statistics is carried out within the same time after germination, and the result shows that the seed germination time is greatly shortened. Seedlings cultivated by using the matrix for vegetable seedling cultivation are more robust, and particularly, stem bases are thicker, leaves have larger surface areas, and the color is darker green.

The utility model relates to the technical field of decorative paper production, in particular to a waste treatment device for processing antibacterial wear-resistant decorative paper, which comprises a treatment barrel, a drainage pipe is fixedly connected to the lower part of the right end of the treatment barrel, a heating wire is fixedly connected to the surface of the lower end of the treatment barrel, and a cylindrical barrel is fixedly connected to the middle of the lower inner wall of the treatment barrel. A plurality of groups of rolling shafts are movably connected to the inner wall of the cylindrical barrel at equal intervals through rotating shafts, a base is fixedly connected to the lower end of the treatment barrel, a supporting frame is fixedly connected to the upper end of the treatment barrel, a stirring mechanism is fixedly connected to the middle of the upper end of the supporting frame, the stirring mechanism comprises a motor, and a connecting rod is fixedly connected to the output end of the motor. According to the waste treatment device for processing the antibacterial wear-resistant decorative paper, the stirring mechanism is arranged, so that the infiltration layering of the decorative paper in a solution can be accelerated, the efficiency can be improved, a waterproof film can be collected during stirring, and relatively pure paper pulp can be obtained.

The application discloses an aerobic-anaerobic bacteria combined coal pretreatment biological gas production device, which comprises a gas blowing system, a bacterial population pre-culturing system, an aerobic-anaerobic biological combined pretreatment and gas production system and a gas-liquid two-phase collection and monitoring system. The application also discloses a gas production method of the gas production device. The application takes coal as a substrate, and under suitable conditions, carries out culture and optimization of a methanogenic bacterial population, and simulates indoor biological gas production effects under different coal rank, bacterial type, combined pretreatment mode, treatment time and metabolic environment conditions. The application adopts an integrated combined processor to combine aerobic bacteria and anaerobic bacteria for pretreating coal, so that coal-based biological gas production can be safely and efficiently carried out, and the application has important environmental benefits and broad application prospect.

The invention discloses a bacterial subtype analysis method based on nano electrospray ionization mass spectrometry, and belongs to the field of detection technologies. Detecting the known bacterial liquid by mass spectrometry to obtain a mass spectrum fingerprint spectrum of the bacterial liquid; screening out predicted metabolites according to the mass spectrum fingerprint spectrum of the bacterial liquid; performing mass spectrum detection on the standard substance for predicting the metabolite to obtain a mass spectrum fingerprint spectrum of the standard substance; metabolites corresponding to different bacteria types are checked; then screening out key biomarkers from metabolites corresponding to bacterial types according to importance values of the projection variables; the method comprises the following steps: carrying out discriminant analysis on bacteria on the basis of SPSS software by taking a metabolite-to-charge ratio and mass spectrum peak intensity corresponding to known bacteria varieties as independent variables and the bacteria varieties as grouping variables, so as to obtain a scatter diagram of known sample bacteria, carrying out SPSS analysis on an unknown sample, and comparing with the scatter diagram, so as to confirm the bacterial subtype in the unknown sample. The method can be used for quickly distinguishing bacterial subtypes by using a blood sample.

The present application belongs to tetrahydroacridine-9 carboxylic acid, and particularly relates to a tetrahydroacridine-9 carboxylic acid derivative, a preparation method and application thereof. The compound has broad-spectrum biological activity. In various embodiments, the compound exerts an effect by inhibiting bacterial type I signal peptidease (SPase I), which plays a key role in the survival and virulence of bacteria. The present application also provides a preparation method of a pharmaceutical composition containing the compound, a pharmaceutically acceptable salt thereof, a pharmaceutically acceptable carrier or excipient.

The present application proposes a refrigerator, which includes a cabinet, a cabinet door for opening or closing the cabinet, an image acquisition device for acquiring images for identifying whether a user adds or subtracts food into the cabinet, a door closing detection component for detecting the switch state of the cabinet, a cleaning device for removing bacteria in the cabinet, and a controller for controlling the actions of various components of the refrigerator. The cleaning device further includes a shell, a positive and negative ion generating unit, and a strong oxidizing ion generating unit. After receiving a door closing signal emitted by the door closing detection component, the image acquired by the image acquisition device is received and it is determined whether food is added to the food storage area based on the image. When food is added to the food storage area, it is determined that the type of bacteria newly introduced into the cabinet at this time is attached bacteria, and the strong oxidizing ion generating unit is turned on. When food is added or subtracted in the food storage area, it is determined that the type of bacteria newly introduced into the cabinet at this time is floating bacteria, and the positive and negative ion generating unit is turned on.

The invention discloses a bacterial cellulose / melanin composite material as well as a preparation method and application thereof, and belongs to the technical field of biochemical engineering. The preparation method of the bacterial cellulose / melanin composite material comprises the following steps: S1, inoculating a bacterial strain for producing bacterial cellulose into a first culture solution for static culture, and separating to obtain bacterial cellulose; s2, a second culture solution is added into the bacterial cellulose for fermentation culture, a bacterial cellulose / melanin composite material is obtained through separation, and the second culture solution contains strains for producing melanin; the bacterial cellulose / melanin composite material can be synthesized in situ more simply and efficiently by adopting a microbial fermentation method, the bacterial cellulose / melanin composite material has good heavy metal ion adsorption performance and good ultraviolet absorption performance, and in addition, the preparation method is mild in condition, environmentally friendly and suitable for industrial production. Cost can be saved, and good economic benefits are achieved.

This invention discloses an image recognition-based method, system, and medium for oral risk assessment, relating to the field of image recognition technology. The method includes: segmenting a user's oral cavity image into blocks; activating a lesion recognizer to identify image block features; matching oral diseases and obtaining corresponding bacterial type sets; imaging the target bacterial community using a fluorescence microscope and extracting fluorescence features; and combining the identified disease information and fluorescence features to generate an oral risk decision for the target user. This achieves the technical effect of multi-dimensional image comprehensive analysis, improving the accuracy and efficiency of the assessment.

1. The name of the product of this design: packaging bag (antibacterial type). 2. Purpose of the product with this design: used for packaging toys, such as super light clay, colored clay, crystal clay, etc. 3. The design key point of this appearance design product lies in the pattern. 4. The picture or photo that best illustrates the key points of the design: main view. 5. This appearance design product is a thin product, and the left view, right view, top view and bottom view are omitted.

Class I lasso peptides are useful in inhibiting the type III secretion system (T3SS), a protein complex, of Gram-negative bacteria in a dose-dependent manner, for inhibiting the growth of such Gram-negative bacteria, and for preventing and / or treating a disease and / or infection caused by such Gram-negative bacteria in organisms such as animals.

The invention discloses a hog house bacterial colony classification detection method based on deep learning. The method comprises the following steps: preparing a nutrient agar culture medium, cooling and shaping, sterilizing, and putting into a culture dish; the culture dish adsorbs microorganisms in the hog house for bacterium culture; taking out the culture dish for photographing to obtain a culture dish image with a bacterial colony, and screening out a bacterial colony image from the culture dish image; preprocessing and marking the bacterial colony image to obtain a bacterial colony image data set; constructing a bacterial colony target detection model and a strain classification model, and respectively inputting the bacterial colony image data set into the target detection model and the strain classification model for training and verification to obtain a bacterial colony recognition detection model and a bacterial colony recognition prediction model; carrying out adsorption, bacterial culture and photographing on microorganisms in a to-be-detected hog house by using the culture dish filled with the nutrient agar culture medium to obtain a culture dish image with bacterial colonies, sequentially inputting the bacterial colony recognition detection model and the bacterial colony recognition prediction model to obtain the strain type of each bacterial colony, and determining the bacterial type in the hog house.

The utility model relates to an antibacterial type deformable environment-friendly simulation rattan structure, and belongs to the technical field of simulation rattan, the antibacterial type deformable environment-friendly simulation rattan structure comprises a rattan main body, a first connecting block is fixed to the right end of the rattan main body, a second connecting block is fixed to the left side of the rattan main body, and an inserting block is fixed to the left end of the second connecting block; a positioning assembly is arranged in the second connecting block and comprises two clamping blocks, two pressing blocks, two clamping grooves, a transverse rod, vertical plates fixedly installed at the opposite ends of the front clamping block and the rear clamping block, and elastic structures fixedly installed on the opposite sides of the two vertical plates and used for achieving the elastic resistance effect on the vertical plates. According to the anti-bacterial type deformable environment-friendly simulation rattan structure, by arranging the positioning assemblies, when the rattan is disassembled and disassembled, the two adjacent rattan blocks can be disassembled without rotating the rattan blocks with force by a worker, so that time and labor can be saved when the rattan main body is disassembled, and the convenience of the rattan during disassembly and installation can be effectively improved.

The invention discloses a quaternary ammonium salt derivative as well as a preparation method and application thereof. The structural general formula of the quaternary ammonium salt derivative is shown as a formula I or a formula II. The quaternary ammonium salt derivative disclosed by the invention plays a role in inhibiting bacteria type I signal peptidase (SPase I) and temperature-sensitive mitoprotein Z (FtsZ), and plays a key role in survival and toxicity of bacteria.

The invention discloses a hemicyanine fluorescent molecule for detecting bacterial infection and bacterial metabolism as well as preparation and application thereof, relates to a hemicyanine-based molecule as well as a preparation method and application thereof, and belongs to the field of detection. The compound can specifically detect bacteria, even drug-resistant bacteria and the fatty acid beta-oxidation physiological process of the bacteria. Through the enhancement of the fluorescence signal, the bacteria type or metabolism condition can be visually judged. By introducing carbon chains with different lengths, the sensitivity of the probe to bacteria is improved, and the accuracy of bacteria detection is promoted. The compound AC5 realizes the detection of 100 mu M of drug resistance of pseudomonas aeruginosa / ceftazidime. The probe provides a promising novel method for early detection of in-vivo deep bacterial infection and research of bacterial oxidative metabolism. Furthermore, a mannose part is introduced, so that the compound D1 shows targeting on the cellular level, and the compound D1 can be used for researching the oxidative metabolism condition of macrophages. # imgabs0 #

Organic compounds showing the ability to inhibit effector toxin secretion or translocation mediated by bacterial type III secretion systems are disclosed. The disclosed type III secretion system inhibitor compounds are useful for combating infections by Gram-negative bacteria such as Pseudomonas aeruginosa.

The invention belongs to the technical field of microbial fermentation, and provides a method for improving the fermentation yield of hyaluronic acid, starch sugar and hyaluronidase liquid are fed in different fermentation stages, on one hand, the fed-batch sugar can prevent rapid viscosity generation in the fermentation process, and the condition of strain inactivation caused by uneven distribution of alkali liquor due to too high viscosity is reduced; on the other hand, hyaluronic acid molecular chains are split by hyaluronidase, the viscosity of hyaluronic acid fermentation liquor is reduced, the mass transfer effect of materials in the fermentation process is improved, and therefore the yield is increased. The method is high in yield and conversion rate of the hyaluronic acid fermentation liquor, simple in process and suitable for large-scale production and application.

The invention discloses a bacterial membrane probe and a detection method for distinguishing Gram-positive and Gram-negative bacterial infections, and belongs to the field of biological detection methods, the bacterial membrane probe prepared by the invention detects bacterial types by using a principle that a biological membrane can specifically target homotype cells and derivatives thereof for selective fusion; according to the detection method, the bacterial membrane probe and the extracellular vesicles are selectively fused, so that the types of the Gram pathogenic bacteria are distinguished, a feasible scheme is provided for specific in-situ detection of the target EV-iNOS, rapid, high-sensitivity and high-stability detection of the target EV-iNOS can be realized, the detection efficiency of the EV-iNOS is improved, and the detection cost is reduced. The invention provides a foundation for the specific application of the subsequent M1 type macrophage-derived EV-iNOS in the field of disease diagnosis, and has very high clinical application value.

The invention discloses a method for modifying and cracking lignin by a bacterial laccase / mediator system, which comprises the following steps: carrying out enzyme modification treatment on ground wood lignin macromolecules by using various laccases and a mediator HBT (Heterojunction Bipolar Transistor), reacting the modified lignin with a NiMoS / P-Al2O3 catalyst and a methanol solution, centrifuging, adding a tetrahydrofuran extraction catalyst, and carrying out solid-liquid separation, thereby obtaining the bacterial laccase / mediator system. And adding the extract into the supernatant, and carrying out reduced pressure distillation and vacuum drying to obtain the lignin oil. And finally, dissolving with dichloromethane, adding an internal standard, and carrying out quantitative analysis through GC-MS (Gas Chromatography-Mass Spectrometer). The contact property of the ground wood lignin and the enzyme catalyst is improved, so that the enzyme catalytic reaction efficiency is improved; and carrying out catalytic cracking on lignin with a NiMoS / P-Al2O3 catalyst to obtain lignin oil. The bacterial type multifunctional alkali-resistant laccase and hydrodepolymerization combined technology is used for catalyzing lignin depolymerization to prepare monophenol substances, and the yield of lignin depolymerization is greatly improved.

The strain cart comprises a movable frame, a plurality of adjusting frames are arranged on the front side and the rear side of the movable frame, a plurality of positioning holes which are vertically distributed in a display mode are formed in the middle of the front side and the middle of the rear side of the movable frame, and a connecting frame is fixedly arranged in the middle of each adjusting frame. The beneficial effects of the utility model are that by adopting the combined structure of the bolt-free plug-pull type positioning rods and the telescopic springs, an operator only needs to pull the handle to realize the rapid positioning and unlocking of the adjusting frame, tools such as a wrench are not needed, the strain transfer progress is obviously accelerated, the operation is simple, the operation is convenient, and the working efficiency is improved. The method is especially suitable for large-scale strain transportation scenes.

The present invention is directed to novel organic compounds demonstrating the ability to inhibit effector toxin secretion or translocation mediated by bacterial type III secretion systems. The novel compounds include zwitterion moieties to provide polarity under appropriate conditions for solubility, formulation, and delivery to an individual while allowing the compounds to be less polar under other conditions such as binding to the T3SS needle target. The type III secretion system inhibitor compounds are useful for treating or preventing infections by such bacteria as Pseudomonas spp. and Chlamydia spp.

The present invention discloses an electrostatic complex multi-channel fluorescence array sensor, a preparation method and use thereof, wherein the fluorescence array sensor contains at least two different fluorescence sensing units PPE-AIE, and the fluorescence sensing unit PPE-AIE is composed of positively charged aggregation-induced emission materials AIEgens with different side chain modifications and negatively charged water-soluble fluorescent conjugated polymer PPE through electrostatic interaction. The present invention also discloses a preparation method for the above-mentioned electrostatic complex fluorescence array sensor. The present invention also discloses the use of the above-mentioned electrostatic complex fluorescence array sensor in bacterial detection. The electrostatic complex multi-channel fluorescence array sensor disclosed in the present invention can realize two signals in a single hole, can distinguish and detect twenty types of bacteria at the same time, has high accuracy and sensitivity, takes less than one minute to detect, has low cost, high repeatability, and does not require professional technicians.

Provided are methods of preparing a premeasurement and / or a surface interaction profile (SIP) for a known type of a bacteria. The methods comprise: providing a defined material; contacting a fluid comprising a known concentration of bacteria with the defined material for a first period of time, thereby forming a contacted material; rinsing the contacted material with a rinsing solution, thereby forming a rinsed contacted material; measuring the bacteria on the rinsed contacted material, thereby generating a measurement; and recording the measurement, thereby preparing a premeasurement for the known type of the bacteria. In some embodiments, methods of identifying a type of a bacteria are provided. In these latter embodiments, the methods comprise similar steps to prepare a measurement and / or SIP as well as a step of comparing the measurement to a premeasurement where a match between the measurement and the premeasurement leads to an identification of the bacteria.

The application provides a kind of vegetable seedling and seedling strengthening microbial composition and substrate and preparation method, belong to microbial inoculant technical field.The application provides a kind of vegetable seedling microbial composition, including the bacterial liquid of multiple bacteria, its bacterial type includes: bacillus subtilis, bacillus amyloliquefaciens, paenibacillus polymyxa and azospirillum brasilense, each bacterium synergistic effect, can significantly shorten seed germination time, and improve root length and lateral root number.The application is also based on the microbial composition, with mushroom waste, straw and fresh livestock and poultry manure etc. are prepared by closed fermentation to obtain the substrate for vegetable seedling, can directly plant seed in the substrate for vegetable seedling, can further shorten seed germination time, simultaneously in the same time after germination, it is found that, using the substrate for vegetable seedling of the application, the seedling raised is more robust, specifically in stem base is thicker, leaf has larger surface area, and color is darker green.

The present application discloses 2-(2-(2-benzoylamino)acetamido)benzoic acid derivatives or its pharmaceutically acceptable salt as a bacterial type I signal peptidase inhibitor, which has a broad spectrum of biological activity. In various embodiments, the present application compound exerts its effect by inhibiting bacterial type I signal peptidase (SPase), which plays a key role in the survival and virulence of bacteria. The present application also provides a preparation method of the compound and its pharmaceutically acceptable salt, a pharmaceutically acceptable carrier or excipient.

The present invention discloses a method for intelligent sterilization and pesticide residue removal in a refrigerator, which relates to the field of refrigerator sterilization. The aim is to solve the problems in the prior art that the sterilization and pesticide residue removal are relatively blind, and the simultaneous activation of the dual system leads to high energy consumption. The adopted technical solution is to set up a detection compartment, a sterilization compartment, and a pesticide residue removal compartment. The food placed in the refrigerator is first detected for the types of bacteria, the concentration of bacteria, the types of pesticide residues, and the pesticide residue values in the detection compartment. The detection results are compared with the standard values, and the food with the exceeded items is placed in the corresponding compartment for treatment, so as to achieve the effect of targeted removal and reduce the comprehensive energy consumption of the refrigerator.

Antibacterial compounds are provided herein, wherein some embodiments of the compounds have broad-spectrum bioactivity. In various embodiments, the compounds act by inhibiting the bacterial type 1 signal peptidases SpsB and / or LepB, an essential protein in bacteria. Pharmaceutical compositions and methods of treatment using the compounds described herein are also provided.

Provided is a method comprising acquiring representation abundances of multiple types of bacteria from analysis of salivary microbiota of a test subject; and inputting the acquired representation abundances into a prediction model to estimate risks of neurodegenerative diseases occurring in the test subject through stratification which differentiates multiple diseases, wherein the prediction model has been generated by machine learning which entails obtaining algorithm using, as explanatory variables, representation abundances of multiple types of bacteria acquired from analysis of salivary microbiota of healthy subjects and patients of multiple diseases belonging to the neurodegenerative diseases, and the disease states of the healthy subjects and the patients, output as target variables, as training data, wherein said multiple types of bacteria include bacteria types having high representation abundances and / or bacteria types showing significant differences in the representation abundances between patients of different diseases in the analysis of the salivary microbiota of the patients.

The present invention relates to macrocyclic broad-spectrum antibiotics. The present invention provides antibacterial compounds, some embodiments of which have broad-spectrum biological activity. In various embodiments, the compounds act through the inhibition of bacterial type 1 signal peptidase SpsB and / or LepB, which are essential proteins in bacteria. The present invention also provides pharmaceutical compositions and methods of treatment using the compounds described herein.

The invention discloses an in-situ full-focusing detection method for an anti-bacterial wheel groove of a steam feed pump rotor. The in-situ full-focusing detection method comprises the following steps: establishing a 3D model of a steam feed pump rotor blade; reverse complementary design is conducted according to the 3D model of the steam feed pump rotor blade, and an anti-bacterial wheel groove model is formed; the anti-bacterial wheel groove model is imported into CIVA software for analogue simulation, and key parameters are obtained; customizing a probe and a wedge block according to the obtained parameters, assembling the probe and the wedge block into a probe assembly, and connecting the probe assembly with a phased array ultrasonic instrument; mounting the probe assembly on a detection device, and sleeving the detection device on a rotor of the steam feed pump; starting the phased array ultrasonic instrument to start data acquisition until the probe assembly completes whole-circle scanning on the rotor wheel disc surface; and analyzing the acquired full-focusing phased array map. According to the method provided by the invention, the full-focusing phased array technology is utilized to detect the fine defects on the surface of the wheel groove of the steam feed pump rotor in the in-situ state, and the adverse effect caused by blind removal of blades for detection is eliminated.

The application provides a pyridine-3-sulfonamide compound and an application thereof. The pyridine-3-sulfonamide compound provided by the application is a novel structure inhibitor of bacterial type II fatty acid synthesis dehydrogenase FabX, has a bacteriostatic effect on Helicobacter pylori strains, and can be further made into an anti-Helicobacter pylori drug or used for treating or preventing diseases caused by Helicobacter pylori infection.