34 results about "Root tip" patented technology

The invention discloses a plant growth-promoting bacterium and application thereof, relates to the field of microorganisms, and provides a plant growth-promoting bacterium which can generate a growth-promoting effect on corn plants and further improve the growth condition of the corn plants. The growth-promoting bacterium is pumilus minutus E2 and is preserved in the China Center for Type Culture Collection, the preservation address is Wuhan University in Wuhan, the preservation date is September 19, 2025, and the preservation number is CCTCC NO: M 20252071. By applying the strain to a corn culture medium, the bifurcation number, the root tip number, the root length, the dry weight, the fresh weight and the plant height of corn can be increased, the growth promoting effect of the strain on corn plants is proved, and a basic support is provided for further application to production.

The utility model relates to the field of agricultural biotechnology discloses a kind of root tip material taking positioner for seed source purification, including machine body, the inside right end of machine body is fixedly connected with fixed mechanism, the fixed mechanism is used to be fixed to different size culture dish, the inside top of machine body is equipped with moving mechanism, the moving mechanism is used to take material to root source;The fixed mechanism includes fixed half ring, the fixed half ring is fixedly connected in the inside right end of machine body, the right side of fixed half ring is equipped with moving half ring, the bottom of machine body is equipped with sliding slot. In the utility model, support frame is fixed in machine body, and it supports double rack movement, drives moving half ring to slide in the sliding slot of the bottom of machine body, fixed half ring is fixed in machine body, and the cooperation of both realizes the fixation of different size culture dish, and effectively fixes the culture dish containing Chinese medicinal material root source.

The application discloses a kind of intelligent preparation systems of laser navigation milk teeth root canal, it is related to milk teeth root canal treatment field, including: image processing module, self-checking registration module, structure acquisition module, spectral processing module, anomaly detection module, fusion determination module, compensation tracking module, digital modeling module, simulation learning module, trajectory generation module, execution monitoring module, safety protection module, interactive command module and record audit module;The application can more accurately distinguish infected dentin and healthy dentin, reduce the risk of misjudgment or missing infected areas, effectively reduce the risk of root tip penetration and root tip tissue damage, so that the laser cutting process always revolves around the real infected area, both can fully remove infected tissue, and can maximize the retention of healthy dental structure, improve root canal preparation efficiency and safety, reduce the dependence of doctors on experience judgment, so that milk teeth root canal preparation operation is more standardized and repeatable.

The invention discloses application and a preparation method of an alfalfa tissue culture hairy root tip chromosome slice, and the preparation method comprises the following steps: (1) preparing an explant by using mature alfalfa leaves, and then mediating hairy roots to transform the explant by using agrobacterium rhizogenes to obtain hairy roots; and (2) carrying out chromosome slide preparation by using the hairy roots obtained in the step (1). According to the method disclosed by the invention, the hairy roots cultured in vitro are used as chromosome slide preparation materials, and the hairy roots cultured in vitro are generated by induction of agrobacterium rhizogenes, have the characteristics of hormone autotrophy and infinite growth, are rapid in growth, stable in heredity and easy to operate, can be subcultured and preserved for a long time under an aseptic condition, realize material taking as required, are not limited by seasons and growth cycles, and are suitable for large-scale production. And the flexibility and repeatability of the experiment are greatly improved.

The application discloses a pile channel preparation guide device and a manufacturing method thereof, and belongs to the technical field of oral cavity restoration. The application aims to manufacture a pile channel preparation guide device which can guide a doctor to accurately and simply realize the direction preparation and depth control of a predetermined pile channel. The pile channel preparation guide device manufactured by the manufacturing method has a retainer which can be embedded in a target dental pulp chamber. A guide structure is arranged in the retainer, and the guide structure has a direction which is extremely suitable for the preparation of a target root channel. The guide structure can effectively ensure the accuracy of the direction of the pile channel preparation. The length of the guide structure is equal to the working length recorded during the preparation of the root channel, minus the length of the target root channel from the target root channel opening to the root tip of the target root channel, and plus the reserved root tip sealing length. Therefore, the guide structure has a length which is extremely suitable for the preparation of the target root channel. It can be seen that the doctor can accurately and simply realize the preparation of the direction of the predetermined pile channel and the control of the depth by using the pile channel preparation guide device manufactured by the manufacturing method.

The invention discloses a root canal treatment teaching mold capable of positioning a root tip dead point and a manufacturing method thereof, a conducting medium channel is arranged in an oral cavity mold body, and a super-absorbent polymer material is filled in the channel, so that the material absorbs water and expands to form a stable gel conducting environment, and the oral cavity mold body can be used for teaching the root canal treatment. When the conductive electrode of the root canal length measuring instrument is inserted through the guide hole and abuts against the conductive medium, the root canal file and the conductive electrode are electrically connected in the gel conductive environment, and therefore the electrical measurement positioning operation of the root tip dead point is achieved. Compared with the phenomena of instability, frequent signal interference and the like caused by a liquid conductive environment established by adopting a liquid conductive medium, the mold improves the stability and repeatability of root measurement signal response through the cooperation of a structure-closed conductive path and a controllable gel medium. In addition, the device can be fixed to a simulated head mold, and the purposes of truly simulating a clinical patient to carry out a root tip dead center positioning scene and carrying out simulation training on the whole root canal treatment process are achieved.

The invention discloses a golden papaya tissue culture seedling culture medium block as well as a preparation tool and a preparation method thereof. The golden papaya tissue culture seedling culture medium block comprises a first base block and a second base block, the first base block is an agar base block, and the first base block is of a cylindrical structure; a filling material of the second base block is formed by mixing coco coir, perlite and vermiculite according to the volume ratio of 3: 1: 1, the filling material is subjected to high-pressure sterilization treatment, and the water content of the filling material is adjusted to 60%-70%; the second base block is of a cylindrical structure, a first base block containing groove is formed in the upper portion of the second base block, and the first base block can be inserted into the first base block containing groove; and the filling material of the second base block contains a root growth promoting agent. According to the culture medium block, the tedious operation of seedling taking, agar washing and transplanting in a traditional process is avoided, mechanical damage such as root tip breaking, root epidermis tearing and lateral root falling is fundamentally eliminated, and the tissue culture seedling transplanting survival rate can be remarkably increased.

The application discloses a salt-tolerant Bacillus G3-2 antagonizing multiple fungal pathogens and an application thereof. The salt-tolerant Bacillus G3-2 is preserved in the China General Microbiological Culture Collection Center on November 27, 2025, and has a preservation number of CGMCC No. 36791. The salt-tolerant Bacillus G3-2 has an inhibiting effect on multiple plant pathogenic fungi, solves the problem of a narrow inhibiting range of a biocontrol strain, and meets the comprehensive prevention and control requirements of multiple crop diseases including apple rot disease, apple leaf spot disease, apple replant disease, banana wilt disease and the like. In addition, it is found that a fermentation liquor of the strain can promote the growth of corn seedlings, including increasing plant height, maximum root length and underground fresh weight, total root length, root diameter, root surface area, root projection area and root tip number of the seedlings. In summary, the strain has dual functions of growth promotion and biological control, and has a good application prospect.

An implant for screwing into a living bone preparation hole has a body extending between a root tip and a crown end. A thread is helically wound along the body. The thread is provided with a truncated crest, a plurality of chip groove sections are formed on the crest, and the chip groove sections jointly form a group of chip grooves. The truncated crest also supports a set of compression ramps configured to apply a compressive stress to an inner surface of the bore with a densification effect when the implant is screwed into the bore. The root tip has a pair of cutting edges radially opposed to each other. Each cutting edge is formed between the plough cutting face and the supporting face. And a micro chamfer is arranged on the supporting surface close to the cutting edge. And a valley is arranged at the root tip end. The valley enables the bottom of the hole to form a substantially circular bone column.

The invention provides a method for rapidly identifying salt tolerance of eggplants. The method comprises the following steps: performing salt stress treatment in a seedling stage of the eggplants; measuring the growth characteristics of the eggplant seedlings after salt stress treatment, wherein the growth characteristics comprise plant height, stem diameter, leaf number, leaf area, root length, root surface area, root volume, root tip number, chlorophyll content, malondialdehyde content, root water content, stem water content and leaf water content; calculating a salt tolerance comprehensive evaluation value according to the growth characteristics; based on the salt tolerance comprehensive evaluation value, salt tolerance classification is conducted on the eggplant seedlings through a correlation analysis method, a principal component analysis method, a membership function analysis method and a clustering analysis method, and classification results are obtained; and based on a classification result, constructing a prediction model through a stepwise linear regression analysis method so as to accurately identify the salt tolerance of the eggplant germplasm resource in the seedling stage. According to the method, through multi-index comprehensive evaluation and mathematical model prediction, the efficiency and accuracy of eggplant salt tolerance identification are improved.

The invention relates to the technical field of medical instruments, in particular to dental pulp nerve cell filling paste and a preparation method thereof, and the filling paste comprises the following components: 8-12% of an inorganic filler, 12-18% of an antibacterial filler, 5-8% of slow-release antibiotic microspheres, 8-12% of an nHA-Col collagen composite material, 1-3% of a traditional Chinese medicine extract, and the balance of a liquid agent. According to the technical scheme, growth and reproduction of pathogenic microorganisms can be effectively inhibited, two schemes of protecting dental pulp nerve cells, opening pulp and not opening pulp are achieved, and the problems of multiple complications such as over-changeable blackening and breaking of the existing nerve-killing and root-tip-extraction nerve excision tooth tissue surface are successfully solved; the purpose that the permanent dental pulp nerve cell filling can be completed by one-time minimally invasive rust removal of a patient in about 15 minutes is achieved, the dental pulp nerve cells are protected, dental pulp nerves are not killed, apical nerve cells are completely filled at one time, and time and cost are saved.

To provide an implant having a shape completely different from conventional implants, which is adapted to each implantation site. [Solution] An implant 100 used in place of a maxillary molar, which is formed by integrating three separate root equivalent portions 121, 122, 123 with one crown prosthesis portion 150 connected to the base end of the root equivalent portions, and has an abutment 170 attached. One or two vertical grooves 135 of a predetermined depth are formed on the inner surface of each root equivalent portion, extending from the tip of the root toward the base end of the root over a length that is approximately one-third of the length of each root equivalent portion, and on the surface area excluding a predetermined area on the inside of each root equivalent portion, horizontal grooves 111, 112, 131 of a predetermined depth are formed in a row at predetermined intervals from the underside of the cervical equivalent region formed on the abutment attachment side of the crown prosthesis toward the root tip of each root equivalent portion.

1. Name of the product in this design: Root Tip Electronic Analyzer. 2. Purpose of this design: A tool for measuring root canal length during dental treatment. 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 belongs to the field of fruit tree cultivation technology, specifically relating to the application of methyl jasmonate in improving nitrogen use efficiency in plants. Applying a certain concentration of methyl jasmonate can significantly improve the nitrogen use efficiency (NUE) of plants under limited nitrogen supply, specifically manifested in a significant increase in plant dry and fresh weight, total root length, total surface area, total volume, number of root tips, number of lateral roots, and root activity; an increase in plant photosynthetic capacity and nitrogen content, and a decrease in the carbon-to-nitrogen ratio. This indicates that an appropriate concentration of methyl jasmonate effectively improves the NUE of apple plants under limited nitrogen supply, promoting plant growth and laying the foundation for further research into the functional mechanism of methyl jasmonate in improving apple NUE. Furthermore, these findings may be applied in the future to guide production practices and improve the nutritional status of fruit trees.

The invention relates to the field of plant genetic engineering, in particular to an MMR1 protein for regulating and controlling ROS homeostasis of a plant root tip meristematic region as well as a coding gene and application of the MMR1 protein. The method comprises the following steps: knocking out an MMR1 gene to obtain stable transgenic lines mmr1-1 and mmr1-2 of arabidopsis thaliana, and constructing an MMR1 gene complement line and an MMRI gene overexpression line; compared with a wild type, the mutants mmr1-1 and mmr1-2 show that the root length is shortened, the root tip meristematic region is shortened, and the root tip division capability is weakened; the back-complemented strain shows that the MMR1 protein is positioned in mitochondria; the root of an overexpressed strain is longer than that of a wild type, which shows that the MMR1 gene plays an important role in the root elongation of arabidopsis thaliana, the development of a root tip meristematic zone and the cell viability of the root tip meristematic zone. According to the invention, the blank in the field of mitochondrial localization protein regulation and control of root development and ROS homeostasis is filled up, and a new genetic gene resource is provided for root improvement and transgenic breeding.

The invention provides a preparation method of lycoris plant root tip chromosomes, and belongs to the technical field of biology. The preparation method of the lycoris plant root tip chromosome comprises the steps of root tip induction culture, root tip collection and pretreatment, enzymolysis treatment, chromosome flaking, microscopic observation and the like. A normal-temperature and low-temperature combined 8-hydroxyquinoline double-stage pretreatment mode is adopted for newborn root tips, and a compound enzymatic hydrolysate and a buffer solution pre-preservation system with an optimized ratio are combined, so that the metaphase division cell proportion and the chromosome image quality are effectively improved. The method has the advantages of simplicity and convenience in operation, high efficiency, strong repeatability and the like, is suitable for preparing chromosomes of different types of lycoris radiate and hybrid materials thereof, and can also be popularized and applied to cytogenetics research of other bulb ornamental plants.

The utility model discloses a multi-purpose accurate suck-back device for a microscopic root tip operation. The multi-purpose accurate suck-back device comprises a suction head, a suction handle, an access pipe, a connector, a metal sheet and a magnetic suction fixing device. A metal sheet is arranged in the suction head and can be bent in the direction of the tooth root, the suction head accurately enters a root canal of an inverted prepared diseased tooth, and scraps and liquid in an operation area are removed by combining negative pressure suction and positive pressure liquid. And the buckle is connected with the upper end of the handle. The design of the suction handle is suitable for pen-holding type grasping, and the adjustable spring interface of the lower end connector is suitable for most modern dental chairs. A magnetic attraction fixing device and a spring clip further improve the fixity of the device. The device has multiple effects, is practical, accurate to operate, convenient to use and low in cost, overcomes the defect that root tip liquid and chippings are retained due to the fact that a traditional root canal aspirator cannot penetrate into a root canal of an inverted preparation affected tooth, and is suitable for cleaning an operation area before inverted filling of a microscopic root tip operation.

The utility model relates to the technical field of dental material forming devices, and discloses a dental material forming device which comprises a forming device body, grooves are evenly formed in the outer portion of the forming device body at intervals, a scratch-resistant coating is arranged on the outer portion of the forming device body, an antibacterial coating is arranged on the outer portion of the scratch-resistant coating, and the antibacterial coating is arranged on the outer portion of the antibacterial coating. And an anti-sticking layer is arranged outside the antibacterial coating. When the forming device is used, the grooves with different sizes are formed, so that medical staff can shape materials in multiple sizes according to requirements, the materials are ensured to be thin, long and straight and can directly reach a root tip area, the materials are favorably and uniformly distributed, and the materials are ensured to be filled into a root canal side penetration area in an accurate size and shape; in addition, the forming device can adapt to root canals of various sizes through the grooves of different sizes, and therefore the universality of the forming device is improved, and the application range of the forming device is widened.

The present disclosure provides a drill bit including a root tip portion, a coronal end portion, and a longitudinal axis extending between the root tip portion and the coronal end portion. The drill bit further includes: a bit core extending along the longitudinal axis; at least two grooves, each groove defined by a concave surface forming a recess along the drill core; and a root tip end face, the root tip end face being at the root tip end. A root tip edge of the concave surface and a root tip edge of the drill core define a shape of the root tip face such that the root tip face defines contours of retention arms at the root tip, each retention arm being formed between the concave surfaces of adjacent grooves. The present disclosure also provides a method of creating an osteotomy using a drill bit.

This invention relates to the field of plant genetic engineering, specifically to the MMR1 protein, its encoding gene, and its applications in regulating ROS homeostasis in the root tip meristem of plants. This invention involves knocking out the MMR1 gene to obtain stable transgenic lines of Arabidopsis thaliana. mmr1-1, mmr1-2 and build MMR1 Gene replacement lines and MMRI Gene overexpression lines; mutants compared to wild type mmr1-1, mmr1-2 The results showed shortened root length, shortened root tip meristem, and reduced root tip division ability; reintroduced lines indicated that the MMR1 protein was located in the mitochondria; the roots of the overexpressing lines were longer than those of the wild type, indicating... MMR1 The gene plays an important role in root elongation, root apical meristem development, and root apical meristem cell activity in Arabidopsis thaliana. This invention fills a gap in the field of mitochondrial-localized protein regulation of root development and ROS homeostasis, providing new genetic resources for root improvement and transgenic breeding.

The invention discloses a detection method for rapidly and visually judging the damage resistance of potatoes based on root tip auxin distribution. The detection method comprises the following steps: sample preparation and sensor loading: controlling expression of an auxin biosensor AuxSen in a potato root tip sample by adopting an inducible expression system; performing reference auxin distribution imaging and standardized injury stimulation: performing multispectral imaging on a sample root tip to obtain reference FRET data, and synchronously acquiring environmental parameters; performing real-time auxin dynamic monitoring and feature extraction: performing time sequence FRET imaging on the damaged root tip, automatically identifying the response starting time of the auxin by adopting a change point detection algorithm, and analyzing and quantifying the flow rate and direction of the auxin through a vector field; the change point detection algorithm performs unsupervised automatic judgment on response starting time by statistically analyzing time points where significant mutation occurs in FRET time sequence data; and anti-damage capability judgment: outputting quantitative indexes of the anti-damage capability of the potatoes.

The utility model discloses a root tip barrier filler for iRoot BP Plus, which comprises a handle and a filling rod, the filling rod comprises a connecting end, a working end and a rod body, the connecting end is detachably connected with the handle, the filling rod is made of nickel-titanium alloy material which can be bent and shaped at will, the working end is provided with a T-shaped opening, and the T-shaped opening is detachably connected with an expanded sponge ball; and a gap is formed between the bottom of the T-shaped opening and the expanded sponge ball. The root canal barrier operation filler is simple in structure and convenient to use, the filling material in the root canal can reach the root tip position through the root canal barrier operation filler, the length of the root tip can be known through the corresponding mark points, an operator can further pressurize, and the operation time can be effectively shortened. And meanwhile, the problems that the filling efficiency is low, the filling quality is difficult to control and the like due to the fact that the tip of a traditional filling device is too flat, cannot be pre-bent and cannot be effectively filled in place can be effectively solved.

To provide a method for manufacturing an implant having a completely different shape from conventional methods, in which the shape of the implant is adapted to each site where it is to be embedded. [Solution] This is a method for manufacturing an implant (100) used in place of a maxillary molar, which is formed by integrating three separate root equivalent portions (121, 122, 123) with one crown prosthesis portion (150) connected to the base end of the root equivalent portions, and has an abutment (170) attached. One or two vertical grooves (135) having a predetermined depth are formed on the inner surface of each root equivalent portion, extending from the tip of the root toward the base end of the root over approximately one-third of the length of each root equivalent portion, and horizontal grooves (111, 112, 131) of a predetermined depth are formed in a row at predetermined intervals on the surface area of ​​each root equivalent portion, from the underside of the cervical equivalent area formed on the abutment attachment side of the crown prosthesis toward the root tip of each root equivalent portion.

This invention discloses a novel indole compound with the following chemical structural formula: This invention utilizes fungal co-culture fermentation to obtain a new natural compound that exhibits good inhibitory activity on the growth of young roots of barnyard grass and has a significant damaging effect on its root tip cells.

The invention discloses a preparation method and application of canna edulis stem cells, and belongs to the technical field of stem cells. The canna edulis stem cells are prepared by the following steps: A1, selecting canna edulis which is large in tuber, many in root, slightly red in bud end, good in growth vigor, free of breakage, germs and insect pests, cleaning, sterilizing, cutting a root tip meristematic region of the canna edulis into blocks, continuously sterilizing, infiltrating by using a sucrose solution, and washing by using an antioxidant solution; a2, inoculating the small blocks treated in the step A1 into a first culture medium for induction culture; a3, taking a cell population containing stem cells after induction culture in the step A2, and inoculating the cell population into a second culture medium for multiplication culture; and A4, inoculating the stem cells subjected to multiplication culture in the step 2 into a third culture medium for adaptive culture, and inoculating the stem cells into a fourth culture medium for suspension culture to obtain the canna edulis stem cells. The canna edulis stem cells can be applied to crop planting, and the crop yield can be obviously increased; the canna edulis stem cells can also be applied to health care products and cosmetics with anti-aging effects.

1. Name of the design product: EndoMaster. 2. Use of the design product: applied to root canal shaping, cleaning, and root tip positioning in the root canal preparation stage. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: perspective view.

The invention relates to the field of plant tissue culture, in particular to a method for tissue culture and propagation of phalaenopsis by taking a root tip as an explant. In particular, the method involves a step of using an adventitious bud induction medium, an adventitious bud proliferation medium and / or a rooting medium; the method is suitable for a plurality of varieties, and has important significance for realizing annual and industrial production of phalaenopsis and reducing the production cost.

The application discloses a tooth-derived cyst image synthesis method based on anatomical constraint and gray self-adaptive modeling, and mainly solves the problems of random lesion position, distorted anatomical relationship, unnatural boundary shape and gray texture not conforming to CBCT local imaging characteristics in the prior art. The scheme is: obtaining CBCT image data of teeth and jaws and multi-structure anatomical segmentation labels spatially registered therewith; establishing an anatomical constraint field required for lesion generation according to the jaw bone, tooth body, inferior alveolar nerve canal and hard tissue; determining a root tip positioning area and a coronal attachment area for apical cyst and tooth-containing cyst respectively; generating a lesion mask constrained by anatomy in the millimeter domain, and self-adaptively modeling lesion texture based on adjacent bone tissue and low gray reference area, and outputting a synthesized image and a lesion label after smoothing fusion, hardening edge and optional root absorption processing. The application can improve the anatomical authenticity, gray consistency and sample diversity of the synthesized lesion, and can be used for data construction of tooth-derived cyst detection, segmentation, identification and robustness evaluation model.

The invention relates to the technical field of forest tree genetic engineering and molecular breeding, and particularly discloses a PagNRT2.4A gene participating in woody plant root architecture remodeling, an overexpression vector, a recombinant agrobacterium and application of the PagNRT2.4A gene. The nucleotide sequence of the PagNRT2.4A gene is shown as SEQ ID NO.1. The invention further discloses a preparation method of the PagNRT2.4A gene. The PagNRT. 4A gene provided by the invention is related to the remodeling of the root architecture of the woody plant, can respond to a nitrate signal, enhances the absorption assimilation ability of the root system of the woody plant poplar to nitrate nitrogen by overexpressing the PagNRT. 4A gene, and promotes the growth and development of the root system by inducing the elongation and growth of a root tip meristematic zone.