9results about How to "Low yield" patented technology

This invention belongs to the field of back-contact battery technology, specifically relating to a back-contact battery and its battery assembly with a specific front-side structure. This specific front-side structure includes a tunneling oxide layer and a specifically doped amorphous silicon layer sequentially disposed on the front side of a silicon substrate. Within the specifically doped amorphous silicon layer, a low-doped amorphous silicon layer, a high-doped amorphous silicon layer, and an oxygen-doped amorphous silicon layer are sequentially disposed along the direction away from the tunneling oxide layer. The specifically doped amorphous silicon layer is doped with phosphorus (P) and contains hydrogen (H). The P doping concentration C1 in the low-doped amorphous silicon layer and the P doping concentration C3 in the oxygen-doped amorphous silicon layer are both lower than the P doping concentration C2 in the high-doped amorphous silicon layer. This specific front-side structure enables the back-contact battery to achieve an absorption rate exceeding 85% for incident light within 400 nm. The back-contact battery of this invention maintains good performance even after long-term exposure to ultraviolet light, improving the battery's UV reliability while achieving high transmittance and high battery efficiency.

An isomerization catalyst characterized in that the catalyst comprises a composite carrier and platinum supported on the composite carrier, the composite carrier comprising 15.0-80.0 mass% of hydrogen type ZSM-22 zeolite, 10.0-70.0 mass% of hydrogen type ZSM-48 zeolite, 10.0-60.0 mass% of aluminum oxide based on the composite carrier. The catalyst is used for n-alkane isomerization reaction, has high activity and good stability, and can obtain higher isomer selectivity and yield, especially higher multi-branched alkane isomer selectivity and yield, and lower cracking product yield.

This invention discloses a catalyst for the production of ethylene and propylene, its preparation method, and its applications. The catalyst comprises the following components: I) 1%–10% of chemical formula A x B y D z A compound of O4; in the chemical formula, the oxidation states of elements A, B, and D are m, n, and p, respectively, satisfying x·m + y·n + z·p = 8, where m, n, and p are integers not greater than 3; the A x B y D z O4 has a spinel structure; II) 0.5%–10% is selected from at least one oxide of rare earth elements, P, Mo, and W; III) 20.0%–55.0% is selected from at least one zeolite of ZSM-5 and ZSM-11; IV) 10%–30% is a binder; V) 25.0%–60.0% is clay. This catalyst is used in the catalytic cracking of petroleum hydrocarbons to produce ethylene and propylene, and features good catalyst stability, low methane yield, and high ethylene and propylene yields.

The utility model discloses a kind of dismounting type waterway structures, with body, body has a first seat body, a second seat body and two communicating pipe body and several water outlet pipe body, the front end and the rear end of pipe body are all with the inside wall of the shell of shower main body can be matched with the top tight structure, in two top tight structures, one top tight structure or two top tight structures are equipped with adjusting structure on pipe body, adjusting the spacing between two top tight structures;First seat body has water mixing valve installation chamber, adjusting water outlet passage, two water passage and water inlet passage in it;Second seat body has water distribution valve installation chamber, adjusting water inlet passage, several water outlet passages and water inlet passage in it.Compared with prior art, it is made by adopting split processing, easy to process, high yield, lighter in quality, low replacement cost, and disassembly and assembly are convenient, easy to maintain.

The application discloses an open type spaceborne SAR array surface power supply and an assembling method thereof, and the array surface power supply comprises a cover plate, a frame and a bottom plate; the cover plate, the bottom plate and the frame are connected through fasteners; a small supporting plate and a large supporting plate are integrally arranged in the frame; a power transformer and a power inductor are assembled on the front surface of the small supporting plate and the large supporting plate; a printed board is further assembled in the frame, and the printed board is located in the same plane as the small supporting plate and the large supporting plate; all components except the power transformer and the power inductor are arranged on the printed board. In the application, the main components in the single machine are arranged on the board and are double-sidedly distributed, the volume and weight of the single machine are reduced to half of the traditional design under the premise of solving the space environment heat dissipation problem; the open type structure design is adopted, the surface-mounted test pads are introduced on the back of the printed board, and great convenience is brought to the batch production and debugging of the product.

The present application relates to a kind of multi-effect herbaceous plant composite soothing repair composition and its preparation method, belong to the cosmetic technical field.The present application is by mixing glacial low deuterium water and superoxide dismutase to obtain A component, add D component (specific proportion nicotinamide mononucleotide (NMN) and modified hyaluronic acid microsphere) by the special interaction of the two with low deuterium water, form "triple synergistic carrier system", significantly improve the penetration and stability of active substance;B component is to mix hydroxyl asiaticoside and humectant.Meanwhile, the composite extract prepared by mixing the extract of radix stephaniae tetrandrae, the extract of gentiana and the extract of piper methysticum is C component, after mixing with A, B, D each component, low deuterium water can well carry the active ingredient in plant extract, hydroxyl asiaticoside and humectant in B component are mixed, can give full play to the moisturizing effect.The composition obtained after mixing A, B, C, D component has excellent soothing repair effect.

This utility model relates to the technical field of UV transfer printing devices and discloses a UV transfer printing device suitable for processing patterns on the surface of acrylic bathtubs, including a bracket. This UV transfer printing device for processing patterns on the surface of acrylic bathtubs, through the setting of a clamping mechanism, first moves the outer bathtub upwards from the slope next to the base into the inside of the slot. Then, the clamping hydraulic rods on both sides inside the slot are adjusted and fixed to the bottom sides of the outer bathtub by the control of the PLC controller. Next, the upper clamping assembly inside the bracket allows the arc-shaped clamping plate to clamp and fix the outer bathtub to the other two sides of the upper end, thus clamping and fixing the outer bathtub for subsequent work. This avoids the lack of a clamping and fixing link, which can easily lead to positional shifts or shaking, resulting in local suspension or misalignment of force points, easily causing pattern alignment deviations, uneven adhesion of the transfer film, and air bubbles, affecting the transfer quality and even reducing the product yield.

This invention provides a component mounting system and a component mounting method capable of suppressing a decrease in yield. The component mounting system (1) includes a control unit (340) that determines whether an input unit (330) has received input during a period of non-receipt, which is the period before the number of processed blocks on which the mounting device (100) mounts the component (440) on the substrate (400) reaches a given number. If it is determined that the input unit has received input, the mounting device corrects the mounting position based on a first correction amount calculated by a calculation unit (320) based on the deviation amount measured by an inspection device (200) from each of the processed blocks of substrates. If it is determined that the input unit has not received input, the mounting device mounts the component on the given number of substrates, and corrects the mounting position based on a second correction amount calculated by the calculation unit based on the deviation amount measured by the inspection device from each of the given number of substrates.