20 results about "Bacterial types" patented technology

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.

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.

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.

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 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.

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.

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.

The invention relates to an auxiliary diagnosis information output method and system. The method comprises the following steps: acquiring a first biological feature of a target object; inputting the first biological feature into a trained target recognition model for recognition, and determining a first recognition result; wherein the first recognition result is used for outputting auxiliary diagnosis information of the target object; the auxiliary diagnosis information comprises an infection type and a corresponding bacterial type when the infection type is bacterial infection; the infection types comprise non-infection, virus infection and bacterial infection. By adopting the method, not only can the infection type of the target object be identified, but also the specific infection bacterial type can be accurately identified when the infection type of the target object is bacterial infection, so that multi-level classification of infection information is realized, different types of infections can be more comprehensively, finely and intuitively distinguished, and the detection accuracy is improved. And an accurate auxiliary diagnosis information output result is provided for medical staff.

The fresh-keeping and anti-bacteria type transfer equipment comprises a transfer box with an opening in the upper end, idler wheels are fixedly arranged at the four corners of the bottom of the transfer box, a storage rack is arranged between the two side walls in the transfer box in an up-down sliding mode, and a driving mechanism used for driving the storage rack to move up and down is arranged at the position, close to the bottom face, in the transfer box. The storage rack comprises a bottom plate, a sealing top cover and vertical plates fixedly connected with the bottom plate and the sealing top cover, the vertical plates divide the inner space of the storage rack into a plurality of independent storage spaces, and an ultraviolet germicidal lamp is fixedly arranged at the top of each storage space. Compared with the prior art, the storage rack has the advantages that the ultraviolet germicidal lamp is arranged in the storage rack, bacteria can be effectively killed, bacteria breeding is prevented, and the shelf life of goods is prolonged. The controller can control the ultraviolet germicidal lamp to start and stop at regular time, reasonable setting is carried out according to the transportation time and requirements of goods, and the sterilization effect is improved.