167 results about "Layers skin" patented technology

The invention discloses combined deicing system and method based on detection of ice layer-skin surface bonding state. The combined deicing system and method based on detection of ice layer-skin surface bonding state are used for removing ice accumulated on the surfaces of aircraft wings. The combined deicing system bonding state sensors arranged on inner skin of wings, heating units, an icing sensor and excitation modules and correspondingly comprises, a heating control unit, a signal conditioning unit, an excitation control unit and the like. According to signals from the bonding state sensors and temperature sensors, the information of the ice layer-skin surface bonding state can be obtained, and the appropriate deicing time can be mastered according. By adopting the method combining heating and excitation, a safe and efficient deicing with low energy consumption is achieved. Compared with a pure electric-heating deicing method, energy consumption is low, and the exciting force for exciting deicing is smaller than the exciting force of pure exciting deicing, therefore, damage to wing skin materials is small, and the effect on the aircraft aerodynamic shape is smaller.

A number of integrated floor structures made of lightweight composite materials for use in an aircraft are disclosed. Generally, each of such floors includes a top-layer skin, a bottom-layer skin disposed below the top-layer skin and a first structural core disposed between the top-layer skin and the bottom-layer skin, the first structural core being composed of a honeycomb composite material. One or more denser structural cores can also be incorporated at strategic locations.

The invention relates to a composite material pi-type lug interface and integral co-curing forming method. The pi-type lug interface comprises an embedded composite material framework and an outer-layer composite material skin coated on the framework. A lamination plane of the embedded composite material framework is parallel to a load direction, and is mainly used for bearing in-plane bending and shearing load. The lamination plant of the outer-layer composite material skin is along with a tangential direction of the outer surface of the embedded framework. The interface is formed with a prepreg-RTM co-curing process. The paving direction of the embedded framework is coplanar with bending and transverse shearing load, such that a characteristic of high composite material in-plane strength can be developed. With the outer-layer skin, the blocked embedded framework is coated into a whole, such that the interface structure is provided with better integrity, and defects of low transmission efficiency and easy stratification at corner joints when a traditional pi-typed interface bears outer-plane load are overcome.

The invention discloses a 32-degree-of-freedom bionic compliant internal skeleton dexterous hand. The dexterous hand uses an anatomy structure of a human hand for reference, a hand portion is of an inner skeleton type, and the outer surface is suitable for being covered with a flexible bionic skin layer with a certain thickness; a joint adopts double-driver antagonistic type drive, so that the compliance operation and the robustness are both taken into account; a tendon coupling piece and a tendon sheath fixing piece are adopted, so that the hand portion and a wrist portion can be easily disassembled and assembled; metacarpophalangeal joints of five fingers all have convolution degrees of freedom so that the fingers can automatically and compliantly adapt to a complex curved surface; a carpometacarpal joint of a thumb has two degrees of freedom of bending-stretching and annular rotation, a metacarpophalangeal joint of the thumb has the degree of freedom of side sway, carpometacarpal joints of a ring finger and a small finger have degrees of freedom of bending-stretching and inward retracting-outward stretching, an opposing action can be performed so that complex pinching operationcan be executed; the axes of all the degrees of freedom of the multi-degree-of-freedom joint are orthogonal, so that control and motion planning calculation is facilitated; and the dexterous hand is very suitable for compliantly operating objects of complex shapes, so that production, disassembly, assembly and maintenance are facilitated.

The invention discloses a natural sea salt beauty treatment and skin care product by using sea salt as the principal raw material as well as other nourishment and beauty treatment factors in accordance with the real needs. The product can be prepared into the forms of beauty treatment mud or beauty treatment salt whose functions include cleaning deep layer skin, removing dead skins, and providing nourishing component needed by the skins.

The invention discloses a polyethyleneimine-loaded straw adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) removing outer layer skins from crop straws, cutting the crop straws into sections, and drying the crop straw sections for later use; (2) adding 1 to 10 percent of a PEI solution according to a ratio that each gram of straw contains 50 to 70 mL of the solution, and performing oscillating immersion to enable the PEI to be loaded on the straws; (3) at the end of the immersion, taking out the straws, and repeatedly washing the straws till the pH is 8 to 9; (4) draining water from the straws, and then drying the straws, thus obtaining the polyethyleneimine-loaded straw adsorbent. After rice straws are directly immersed in the PEI, the inner and outer surfaces of the straws are loaded with the PEI; in the cross sectional direction, the PEI on the outer side is more than that on the inner side, thus forming a novel chelated material, and the adsorption performance of the straws is greatly improved. An obtained adsorption material is of a ring shape, and is adjustable in length-to-diameter ratio, high in fluid mechanics and mechanical strength and convenient to use. The obtained composite adsorption material is good in effect of treating gallic acid wastewater and tannic acid wastewater, and is high in capacity of adsorbing and removing heavy metal cations such as Cu<2+>, Zn<2+> and Cd<2+> and PO4<3->.

The invention relates to an interactive generation method for a realistic virtual incarnate model based on a component library, comprising the steps: firstly, according to gender parameters, body height parameters, age parameters, hairstyle parameters, clothing parameters and equipment parameters appointed by a user, a corresponding skeleton model and a corresponding outer layer skin model are respectively generated based on the component library, and a virtual incarnate model with the realistic characteristic is established in a superposition way; secondly, characteristic points of left eye, right eye, nose, mouth, chin, left ear and right ear on a human face photo are selected in an interaction way, the photo is mapped onto a face grid of the incarnate model by adopting a texture mapping technology, thereby the virtual incarnate model with the reality is generated. On the basis of the prior technical scheme, the invention can save a great deal of time and resources by fully utilizing the prior component library data, can increase the reality of the incarnate model without changing geometric data of the model by customizing face textures of the incarnate model in the interaction way, and increases the immersive characteristic to develop common activities among multiple users in a subsequent virtual environment.

The invention discloses photo-crosslinking/electrostatic spinning preparation and an application of a hydrogel composite scaffold with a double-layer skin structure. According to the composite scaffold, a gelatin electrostatic spinning fiber membrane is used as a substrate, and cylindrical gelatin hydrogel is prepared on one surface of the gelatin electrostatic spinning fiber membrane through a photo-crosslinking effect, so that the hydrogel composite scaffold with the double-layer skin structure is obtained. The composite scaffold has a double-layer structure, the fiber membrane is equivalentto the epidermal layer of the skin, foreign matter and pathogen invasion can be blocked, and tissue fluid loss can be prevented; the patterned cylindrical gelatin not only can support cell viabilityand cell adhesion, but also can promote cell migration and proliferation and promote regeneration and formation of skin tissues; due to the unique shape, the composite scaffold has good air permeability, large porosity and pore diameter while good fitness with wounds is guaranteed, transportation of oxygen and nutrient substances of the wounds is facilitated, generation of blood vessels at the wounds can be promoted, the degradation speed of the composite scaffold is close to the wound healing period, and wound healing is facilitated.

Embodiments of a system and methods for skin detection and pose determination of a hand in an image are generally described herein. A method for may include detecting skin pixels in an image using a multi- layer skin filter and classifying the skin pixels into a set of foreground skin pixels and a set of background skin pixels. The method may include storing information about the set of background skin pixels in a persistent memory. The method may include determining a set of features from the set of foreground skin pixels, and clustering features from the set of features to create a set of hand pose descriptors. The method may include determining a set of candidate hand pose region descriptors and a set of candidate hand pose contour descriptors that match the set of hand pose descriptors and detecting a valid hand pose using the sets of candidate descriptors.

The invention provides a micro floating raft array skin having functions of reducing resistance and noise. Through the adoption of the micro floating raft array skin disclosed by the invention, the functions of reducing fluid resistance and noise of an underwater vehicle can be realized. The micro floating raft array skin comprises an inner layer skin, an outer layer skin, and an intermediate layer, wherein the inner layer skin and the outer layer skin are made of organic polymer materials; and the intermediate layer is formed by a plurality of micro floating raft array units through an arraymanner, and is fixed between the thin flexible inner layer skin and the thin flexible outer layer skin through super glue to form the micro floating raft array skin having the functions of reducing fluid resistance and noise.

The invention provides a secondary-generation fingerprint identification method, aiming at overcoming the state that the existing optical fingerprint identification system can only scan the surface of finger skin or scan the dead skin layer, instead of penetrating into the dermal layer because light can not penetrate the surface of the skin (dead skin layer). The method realizes the accuracy of the process of the optical fingerprint identification method.

The invention belongs to the technical field of tissue engineering and discloses tissue engineering full-layer skin and a preparing method thereof. The tissue engineering full-layer skin comprises epidermal cells, dermal cells and a biological scaffold material. The skin is obtained by compounding the dermal cells in the biological scaffold material, inoculating the surface with the epidermal cells and carrying out culturing and preparing. The tissue engineering full-layer skin is provided with a dermis layer and an epidermal layer which are provided with activity cells, the epidermal layer contains stratum corneum and is approximate to the normal skin, after transplanting is carried out, complete human skin with a function can be regenerated, the regenerated skin has skin appendant organs such as hair and the sebaceous gland, and the skin can be used for treating skin defects caused by inflammation, ulcer, burns, scalds and the like, and can also be used for preparing a skin model for disease study, medicine testing and screening, cosmetic testing and the like.

The invention provides a double-layer skin wave-absorbing honeycomb sandwich structure and a preparation method thereof. The structure is formed by overlapping a first skin layer, a wave-transmittinglayer, a second skin layer, a plurality of wave-absorbing layers and a reflecting layer in sequence in the electromagnetic wave propagation direction, wherein the thickness of the first skin layer andthe thickness of the second skin layer are 0.2 mm-1mm respectively, the wave-transmitting layer is a honeycomb structure layer, the thickness of the wave-transmitting layer is 0.5 mm-1.5mm, and any one of the wave-absorbing layers is a wave-absorbing honeycomb layer. Through the double-layer skin design, the wave-absorbing performance of the wave-absorbing honeycomb sandwich structure in the high-frequency (Ka) waveband can be greatly improved, and the defect that when the skin is thick (larger than 0.2 mm), the wave-absorbing honeycomb sandwich structure is difficult to obtain a satisfactorywave-absorbing effect in the high-frequency (Ka) waveband is overcome.

The present invention relates to a stuffed potato meat ball and a processing technology thereof. The stuffed potato meat ball includes outer layer skin material and filling material wrapped by the outer layer skin material. The stuffed potato meat ball is characterized in that the outer layer skin material and the filling material are chosen from the following two ingredients: the raw materials of ingredient A include lean meat, tilapia skin, water, phosphate, edible salt, tapioca starch and seasonings and the mass ratio of the lean meat and tilapia skin is 60-75 : 25-40; the raw materials of ingredient B include potatoes, potato starch and edible salt, and the mass ratio of the potato starch and potatoes are 0-15%; when one of the ingredients is selected to be used as the outer layer skin material, the other ingredient is thus used as the filling material. Compared with the traditional meat balls, the provided stuffed potato meat balls have a traditional meat ball flavor and a fresh potato flavor, and are reasonable in nutrition ratio, better in mouthfeel, moderate in hardness, relative good in chewiness, and richer in flavor.

The invention concerns a thermoplastic resin-based composition, for making single-layer or multilayer skins (or composite structures), having a speckled appearance, and a method for obtaining same. Said composition comprises: 10 to 99 wt. % of a compound or “matrix” of a polyvinyl chloride thermoplastic (PVC) resin; 0.5 to 90 wt. % of at least a compound or “inclusion” of a thermoplastic resin containing at least one colouring pigment: 0.5 to 20 wt. % of speckling agents selected among colouring pigments, metal particles or decorative flakes, glass beads, polymeric particles.

The invention discloses a medicine for accelerating the repair of stratum epidermis and the regeneration of skin appendages. The medicine consists of epidermal stem cells, bone marrow mesenchymal stem cells and a medicine carrier, wherein the epidermal stem cells and the bone marrow mesenchymal stem cells are adhered to the medicine carrier, namely each cubic millimeter of the medicine carrier contains (0.3-1)*104 epidermal stem cells and (0.3-1)*104 bone marrow mesenchymal stem cells. The medicine has an obvious effect in aspects of promoting the regeneration of the stratum epidermis, promoting the regeneration of dermis, enhancing the mechanical strength of regenerated skin, promoting the content of collagen of the regenerated skin, promoting revascularization, promoting the regeneration of hair follicles and the like, so that wounds can be repaired within a short time and the regeneration of the skin appendages can be accelerated. The invention also discloses a method for preparing the medicine for accelerating the repair of the stratum epidermis and the regeneration of the skin appendages, and the method is simple, high in controllability, high in operability and high in repeatability.

The invention relates to an App-started skin changing strategy. The App-started skin changing strategy comprises the following steps: calling a color center by using App; setting local preset color key value pairs in the color center; reading plist according to current configuration to acquire color information in the plist; writing the color information into the color center to generate the key value pairs relevant with colors; setting re-loaded color configuration functions at an App bottom-layer source code; calling the skin changing functions in a circulating manner from the bottom layer;starting reset element information functions on an upper layer interface; and starting to re-load pages. According to the App-started skin changing strategy disclosed by the invention, when App is started, the color information in the plist is stored through the color center, and then bottom-layer skin changing functions and the reset element information functions in the upper layer interface arecalled in a form of key value pairs, so that the start of the skin change is realized, the skin changing speed is high, a personalized using demand is met, and the App is easy to maintain.

The invention relates to a three-dimensional (3D) printing wire, in particular to a biodegradable 3D printing wire having a three-layer skin-core structure, and a preparation method of the biodegradable 3D printing wire. The 3D printing wire comprises three layers, i.e. an inner layer, a middle layer and an outer layer, wherein the inner layer is prepared from poly-L-lactic acid, the middle layer is prepared from 80-90wt% of poly-L-lactic acid and 10-20wt% of a poly-L/D-lactic acid copolymer, and the outer layer is prepared from 65-75wt% of poly-L-lactic acid and 25-35wt% of a poly-L/D-lactic acid copolymer. The preparation method comprises the steps of sequentially adding the materials of the inner layer, the middle layer and the outer layers into corresponding single screw extruders at the inner layer, the middle layer and the outer layer in a wire-drawing device, extruding a wire at the temperature of 160-180 DEG C, and then enabling the extruded wire to be sequentially cooled and molded in four stages so as to obtain the biodegradable 3D printing wire having the three-layer skin-core structure. The biodegradable 3D printing wire having the three-layer skin-core structure is fully biodegradable and has good rigidity, toughness, roundness and glossiness.

The invention discloses a novel bioengineering decellularized dermal matrix and a preparing method thereof. The preparing method includes the steps that porcine skin is pretreated to obtain dermal layer skin graft, and a mixed protective solution is used in all the dermal matrix decellularization process; a high hydrostatic pressure technology is used for preseparating cells in dermal tissue; residual cell nucleuses are digested through a composite nuclease method; detergent is used for removing loose smudge cell sheets; the mixed protective solution is used for rinsing. Suitable and efficient physical means are used and supplemented with a small amount of enzymes and detergent, cell components in the dermis are fully removed, under whole-process protection of the protective solution, it can be ensured that immunogenicity of the dermal matrix is reduced to the maximum on the basis of ensuring complete removal of the cell nucleuses, a normal three-dimensional collagenous fiber structure and array polarity of the dermal matrix are reserved, and therefore the prepared decellularized dermal matrix is high in stability and biocompatibility.

The invention discloses a foaming ceramic core composite material sandwich structure. The sandwich structure comprises a foaming ceramic core material, a first fiber reinforced flame-retardant composite material layer positioned on the upper surface of the foaming ceramic core material and a second fiber reinforced flame-retardant composite material layer positioned on the lower surface of the foaming ceramic core material. There are two types of the forming methods for the sandwich structure: 1, enabling the first and second fiber reinforced flame-retardant composite material layers to be bonded with the upper surface and the lower surface of the foaming ceramic core material by using a flame-retardant macromolecular bonder; and salifying; 2, laying the fiber reinforced flame-retardant composite material on the upper surface and the lower surface of the foaming ceramic core material, performing prepreg, and salifying. Foaming ceramic is used as a core material, and the fiber reinforced flame-retardant composite material is used as an outer-layer skin, so the difficult-flammable foaming ceramic core composite material sandwich structure with high rigidity is formed. The prepared sandwich structure is suitable for the application fields which need a high fire-proof grade and the high rigidity, such as fire-proof doors, building materials, subway escape platforms, and ocean engineering platforms.

The invention discloses a guided tissue regeneration membrane and a preparation method thereof. The preparation method comprises the steps of pretreating mammalian skin to obtain corium layer skin graft; sequentially performing decellularized treatment, virus inactivation treatment and dense shrinkage treatment on the corium layer skin graft to obtain a guided tissue regeneration membrane precursor; arranging the guided tissue regeneration membrane precursor in solution of soluble strontium salt in a mode of making the rough surface upward and making the smooth surface downward to perform activation, transferring the precursor to simulated body fluid to perform mineralization, and performing precooling and freeze drying to obtain the guided tissue regeneration membrane. According to the method for preparing the guided tissue regeneration membrane, by performing decellularized treatment, virus inactivation treatment and dense shrinkage treatment on the corium layer skin graft, the obtained guided tissue regeneration membrane precursor has the rough surface, the rough surface is mineralized in the simulated body fluid after being compounded with strontium element, and the obtained guided tissue regeneration membrane can slowly release Sr<2+>and Ca<2+> to peripheral defective bone tissues and has good bone induction and bone conduction functions.