摘要:
A socket is portably and removably attached to a tool and includes a body with a mounting hole which includes multiple faces. Each face includes a first protrusion and two groups of second protrusions located on two sides of the first protrusion. The first protrusion of each face includes a first flat distal surface which has a certain length. Each second protrusion includes a second flat distal surface which is tilt relative to the first flat distal surface. The two respective slopes of the second flat distal surfaces of the two groups of the second protrusions are opposite to each other. A first imaginary plane is co-linear with the first flat distal surface. A second imaginary plane is co-linear with the second flat distal surfaces of each second protrusion. An angle is formed between the first and second imaginary planes. The socket can drive a normal or rounded bolt.
摘要:
Disclosed is a method for promoting extracellular expression of proteins in B. subtilis using cutinase, which belongs to the technical fields of genetic engineering, enzyme engineering and microbial engineering. It teaches co-expressing a cutinase mutant and a target protein in B. subtilis to promote extracellular expression of the target protein which is naturally located inside cells. The target protein includes xylose isomerase, 4,6-α-glucosyltransferase, 4-α-glucosyltransferase, trehalose synthase, branching enzyme and the like. The invention can achieve extracellular expression of intracellularly localized target protein, improve the production efficiency, reduce the production cost and simplify the subsequent extraction process.
摘要:
A socket includes a body with a mounting hole which includes multiple faces. Each face includes a first protrusion and two groups of second protrusions which are located on two sides of the first protrusion. The first protrusion of each face includes a first flat distal surface which has a certain length. Each second protrusion includes a second flat distal surface which is tilt relative to the first flat distal surface. The two respective slopes of the second flat distal surfaces of the two groups of the second protrusions are opposite to each other. A first imaginary plane is co-linear with the first flat distal surface. A second imaginary plane is co-linear with the second flat distal surfaces of each group of the second protrusions. An angle is defined between the first imaginary plane and each of the second imaginary planes. The socket can drive a normal or rounded bolt.
摘要:
Manufacturing steps for manufacturing a hand tool include a step of preparing a base part which has a handle end and a head end; a step of molding: placing the base part in a molding device and coating plastic to the whole base part by way of plastic injection molding to form the base part into a semi-product which has a handle portion and a head portion, an installation hole defined through the head portion; a step of coating: electro-coating a material to outer surface of the plastic of the semi-product, and a step of assembly: assembling a ratchet driving unit in the installation hole by using fixing members so as to obtain a final product.
摘要:
An apparatus for generating and managing logical units (LUNs) in a storage network environment is disclosed herein. In one embodiment, such an apparatus includes an identification module to identify a type of LUN, one or more servers that will access the LUN, and a storage system that will host the LUN. A mapping module maps the type, the one or more servers, and the storage system to one more abbreviations. A naming module then generates a LUN name that encapsulates the abbreviations. An assignment module may then assign the LUN name to the LUN. A corresponding method and computer program product are also disclosed herein.
摘要:
A method and apparatus for address assignment and node scheduling within an ad-hoc communication system is provided herein. During operation a personal area network coordinator (PANC) (40) will divide a superframe (301) into a plurality of slots, assigning each sub-tree under the PANC's direct child node to each slot for communication with the PANC. Each sub-tree coordinator will be assigned a same logical address by the PANC. As a result, a sub-tree coordinator synchronizes to the PANC node in only one subsuperframe slot assigned by the PANC with different sub-tree coordinators synchronizing to the PANC in different slots.
摘要:
A two-package moisture curable composition is provided. The composition comprises a first part comprising at least one silane terminated polyurethane and a second part comprising at least one silanol terminated polysiloxane; wherein the silane terminated polyurethane based polymer has at least one end group of the general formula: -A-(CH2)m-SiR1n(OR2)3-n, where A is a urethane or urea linkage group, R1 is selected from C1-12 alkyl, alkenyl, alkoxy, aminoalkyl, aryl and (meth)acryloxyalkyl groups, R2 is each substituted or unsubstituted C1-1-8 alkyl or C6-C20 aryl groups, m is an integer from 1 to 60 and n is an integer from 0 to 1; wherein the silane terminated polyurethane is prepared using natural oil polyols and their derivatives; and wherein the composition, after moisture cured, forms a surface whose water contact angle is larger than 101°. The composition is suitable for applications in antifouling coatings which afford low surface energy and improved mechanical performance.
摘要:
A light directing member for an infrared touch screen device is provided. The infrared touch screen includes a touch screen having a first side and an opposing second side, an infrared emitter for emitting infrared light beams toward the light directing element, and a plurality of infrared receivers arranged along the first side of the touch screen. The light directing member is positioned at the second side of the touch screen, and includes an outwardly curved surface facing the infrared emitter and a plurality of reflective slanted surfaces. The curved surface collimates the infrared light beams emitted from the infrared emitter into parallel infrared light beams. The plurality of reflective slanted surfaces are aligned with the respective infrared receivers, and for receiving and reflecting corresponding portions of the collimated parallel beams to the respective infrared receivers. A related device is also provided.
摘要:
A printed circuit board comprises a circuit substrate, an electrically conductive cloth structure, and a shielding structure. The circuit substrate comprises a base layer, a grounded circuit layer, and a connecting pad formed on the grounded circuit layer. The cloth structure comprises an anisotropic conductive adhesive connected to the connecting pad, an insulating layer, and a metallic deposition layer arranged between the anisotropic conductive adhesive and the insulating layer. The shielding structure comprises a shielding metal layer, an adhesive matrix, and a number of electrically conductive particles electrically connected to the shielding metal layer. The insulating layer defines a number of through holes corresponding to the particles, the particles is arranged in the through holes respectively and electrically connected the metallic deposition layer and the shielding metal layer. A method for manufacturing the above PCB is also provided.