34 results about "Barrier method" patented technology

Methods and apparatus are provided for performing an expedited shoe test using an expandable casing portion as an annular fluid barrier. Further provided are methods and apparatus for successfully recovering from a failed expansion so that a shoe test can be completed without replacement of the expandable casing portion. In one recovery method, a selectively actuatable fluid circulation tool is provided to further expand the expandable portion or perform a cementing operation. Additionally, methods and apparatus are provided to drill a wellbore and form an annular fluid barrier in a single trip.

A method for fabricating a thin film solar cell includes providing a soda lime glass substrate comprising a surface region and a concentration of sodium oxide of greater than about 10 wt % and treating the surface region with one or more cleaning process, using a deionized water rinse, to remove surface contaminants having a particles size of greater than three microns. The method also includes forming a barrier layer overlying the surface region, forming a first molybdenum layer in tensile configuration overlying the barrier layer, and forming a second molybdenum layer in compressive configuration using a second process overlying the first molybdenum layer. Additionally, the method includes patterning the first molybdenum layer and the second molybdenum layer to form a lower electrode layer and forming a layer of photovoltaic material overlying the lower electrode layer. Moreover, the method includes forming a first zinc oxide layer overlying the layer of photovoltaic materials.

Method and apparatus for transmitting combined power and data. In one embodiment, the apparatus comprises an isolation barrier; a drive controller for generating a first waveform comprising a plurality of data signals for transmitting different types of data, where the drive controller couples the first waveform to a first side of the isolation barrier to produce a second waveform on a second side of the isolation barrier; and a circuit controller coupled to the second side of the isolation barrier, where the circuit controller is powered by the second waveform, and where the circuit controller controls a circuit based on the plurality of data signals.

Method for evaluating the damage to a thermal barrier applied to a component made from a metal substrate, said thermal barrier comprising a sublayer of aluminium and a layer of columnar-structure ceramic material, said sub-layer being positioned between said substrate and said ceramic layer, characterized in that it comprises a first step of calibration comprising the selection of a determined number of calibration components that have undergone various degrees of damage, exposing them for a given length of time to radiation, measuring the temperature obtained at the surface after the given length of time and establishing a curve connecting an increase in temperature to damage, and a second step of measuring the damage to the thermal barrier of said component that involves exposure to said radiation for said length of time, measuring the temperature obtained, and relating the increase in temperature to the calibration curve in order, from said curve, to extract the level of damage.

Methods and structures are provided for implementing feed-through and domain isolation using ferrite and containment barriers. A vertical isolator is provided between a first domain and a second domain on a printed circuit board with signals passing between the first domain and the second domain. The vertical isolator is placed over a domain separation gap between the first and second domains in the printed circuit board, the vertical isolator having a vertical isolation barrier between a first vertical plate coupled to the first domain and a second vertical plate coupled to the second domain. The vertical isolation barrier is formed of a unitary ferrite block or a non-conductive magnetic absorber material. A plurality of capacitance feed-through plates and a dielectric material are provided within the vertical isolator.

The invention discloses a preparation method for a diamond cutter texture coating based on a micro-region blocking method. The preparation method is characterized by mainly comprising the steps that,1, a micro-hole and / or a micro-groove array are machined in a metal film to serve as a mask; 2, a tool base body undergoes pretreatment; 3, the mask is fixed on the surface of the cutter base body subjected to pretreatment; 4, a micro-region barrier film is deposited on the surface of the cutter covered with the mask by adopting a surface coating technology, the mask is removed after the film is prepared, micro-region protrusions with texture features and with the function of restraining the growth of a diamond are formed on the surface of the cutter; 5, a diamond texture coating is selectively grown on the surface of the cutter with the micro-region protrusions by adopting a CVD method; and 6, the micro-region protrusions which are formed on the surface of the cutter base body in a depositing mode and have the texture features in the step 4 are removed. The method is simple, convenient and rapid and relatively low in cost, the growth efficiency and the success rate are relatively high, the cutter cannot be damaged, and the strength of the cutter can not be reduced.

The invention provides a silicon carbide hydrogen permeation barrier coating for stainless steel. The silicon carbide hydrogen permeation barrier coating comprises a transition layer, an H storage buffer layer and a hydrogen barrier layer which are upwards arranged layer by layer from a stainless steel substrate, wherein the transition layer is composed of a metal titanium layer and a TiN layer; the H storage buffer layer is an amorphous SixC1-x layer, wherein x is greater than or equal to 0.5, but smaller than 1, and the hydrogen barrier layer is SiC. The invention further discloses a preparation method for the silicon carbide hydrogen permeation barrier coating. According to the invention, the H storage buffer layer and the H barrier coating are combined to prepare the hydrogen permeation barrier coating with a substrate / transition layer / H storage buffer layer / SiC composite structure. Based on the radiation-resistant H barrier coating SiC film, the H storage buffer layer SixC1-x gradient layer is prepared by adopting vapor deposition technology, and the hydrogen permeation barrier property of the substrate / transition layer / H storage buffer layer / SiC composite structure is optimized by utilizing a great number of C- and Si- dangling bonds with extremely strong hydrogen catching capacity in the SixC1-x gradient layer.

The invention discloses a vine notoginseng seedling raising and understory planting method, including seedling raising, planting, management and protection and harvesting. The present invention has created a cultivation technology for planting vine notoginseng under the forest. When planting, the soil barrier method is used to ditch 40 cm away from the trees, so as to prevent the surface roots of the trees from competing for water and fertilizer with the vine notoginseng. , but also drainage and waterlogging in the rainy season. Combined with the shade-loving characteristics of vine notoginseng, the present invention utilizes the shade condition of closed trees to make it grow normally, and at the same time, the shading effect of the woodland can also reduce the water evaporation of vine notoginseng. The invention makes full use of the land resources in the understory space, increases the planting range of the rattan notoginseng, not only can rationally utilize the resource space and the like, but also can be used as a viewing plant to increase the understory economic benefits.

The invention discloses a swing-type robot arm and an obstacle-surmounting method for an overhead cable line inspection robot. The robot is composed of a body and a control system. The mechanism has a pair of walking wheels, each walking mechanism is located on the corresponding side of the machine arm and the middle part is connected with the knuckles of the corresponding side of the machine arm; a pair of machine arms are installed on the two ends of the machine body, at least It includes a pair of finger joints, a wrist joint, an elbow arm with an elbow joint and a shoulder joint, wherein the shoulder joint is located at the end point of the body; A horizontal rotation joint; flexible cables are connected between the wrist joints of each robot arm and the two ends of the machine body. The whole rope can slide to both sides with the fixed pulley at the wrist joint as the fulcrum to adjust the length and tension of the ropes on both sides. It is long, stable and fast across obstacles.