58results about How to "Promotes directional growth" patented technology

The invention relates to a silicon nitride powder for solar polysilicon ingot casting and a preparation method thereof. The silicon nitride powder for solar polysilicon ingot casting comprises 25-50wt.% of ganister sand, 40-65 wt.% of a diluent and 5-15 wt.% of an additive. The method is not only simple in preparation process, free of any toxic and harmful gases, and applicable to mass production, but also prepares a high thermal conductivity high purity turquoise silicon carbide powder containing trace silicon nitride powder by controlling the reaction parameters through a one-step reaction. The silicon carbide powder is conducive to the determination of coating uniformity in a spraying process; while the trace silicon carbide contained in the coating improves the thermal conductivity of the coating, provides homogeneous nucleation points, and is beneficial for heterogeneous nucleation, orientated growth of polycrystalline, and improvement of film formation rate.

The invention discloses a planting device for promoting the orientated growth of mauve jade Chinese yam. The planting device comprises an arc-shaped plate body, an arc-shaped cover body and a buckle, wherein one end of the arc-shaped plate body is bent inwards to form a head, the other end of the arc-shaped plate body is gradually decreased in width and sharpened to form a tail, and a plurality of strip holes are formed in the plate body; the arc-shaped cover body is used for sealing the upper part of the plate body slidably, a hollow cylindrical structure is formed by the arc-shaped cover body together with the plate body, the first end and the second end of the cover body are open, and the width of the second end is gradually decreased to form a top end; a plurality of circular holes penetrating through the cover body are formed in the cover body, and the hole diameters of the circular holes are 1 to 3 mm; the head of the plate body extends inwards to form an end surface, and the end surface is used for sealing one end of the hollow cylindrical structure when the plate body is matched with the cover body to form the hollow cylindrical structure; and the first end of the cover plate is arranged on the buckle, and the buckle is of a ring structure.

The invention relates to a high-emulation tissue-engineered nerve repair material which is characterized by being prepared from mixing one, two or three of type I collagen, chitosan and gelatin. The material is prepared from the following raw materials in parts by weight: 1-10 parts of the type I collagen and 1 part of the chitosan. The material can be used for the basic research on nerve injury repair and the bridge repair of clinic human spinal cord and peripheral nerve injury or defect, is beneficial to the growth of nerve regenerated fiber and can also be used for the repair of spinal cord and peripheral nerve injury.

The invention relates to a high-simulation tissue engineering nerve-repair material and a preparation method. The high-simulation tissue engineering nerve-repair material is characterized by being prepared by one or two or all of I-type collagen, chitosan and gelatin. The material comprises, by weight, I-type collagen 1-10 parts and gelatin 1 part, can be used for basic research on nerve injury repair and bridging repair of injured or defected clinical human body spinal cord and peripheral nerves, facilitates growth of nerve regeneration fibers and can be used for repair of the injured spinal cord and the peripheral nerves.

The invention relates to a high simulation tissue engineering nerve repairing material NGCS and a preparing method thereof which is characterized in that the NGCS material comprises one, two or three raw materials of type I collagen, chitosan and gelatin. The NGCS material is made of the following raw materials by weight portions: 1-10 portions of type I collagen, 1 portion of chitosan and 1 portion of gelatin. The NGCS can be applied to both the basic research of the nerve injury repairing and the bridge repairing of clinical human spinal and peripheral nerve injuries or defects. The NGCS material is beneficial for the growth of nerve regenerated fiber and can be applied to the repairing of spinal and peripheral nerve injuries.

The invention discloses a preparation method for a CNT (carbon nano tube)-SAPO (silicoaluminophosphate)-5 molecular-sieve composite membrane. The preparation method comprises the following steps that: (1) synthetic liquid is prepared, and the molar composition of raw materials of the synthetic liquid is that Al2O3: P2O5: SiO2: Template: H2O: X equals to 1: a: b: c: d: e, wherein a is equal to 0.8-1.3, b is equal to 0.05-1, c is equal to 0.15-1, d is equal to 45-1000, and e is equal to 0.075-0.3; (2) a porous support is put into a high-pressure crystallization reaction kettle, the synthetic liquid is added to promote full crosslinking growth among molecular sieve crystals, and finally, the complete molecular sieve membrane is formed; and (3) an organic template is removed by the catalytic property of a heteroatoms-containing SAPO-5 molecular sieve. According to the invention, intergranular defects can be effectively prevented from forming in the molecular sieve membrane, and a split organic template agent can form a CNT tube in a molecular sieve pore passage so as to improve the hydrophobic property of the molecular sieve membrane. According to the invention, technological conditions are moderate, the operation is simpler, costs are lower, the applicability is wider, and not only is the large-scale production of molecular sieve membranes facilitated, but also the industrialized application of the molecular sieve membranes in separation of gas and separation of low-concentration organics is facilitated.