一种肽类添加剂及制备方法

A peptide additive for food or feed is prepared from one or more of corn protein powder, soybean protein, wheat protein and rice protein through enzymolysis of proteinase. It can speed up the synthesis of protein in body, improve immunity, regulate the physiological activity, and supply nutrients to body.

Comprehensive relay test stand for simulating operating environments of railways and subways

The invention relates to a comprehensive relay test stand for simulating the operating environments of railways and subways, comprising a temperature box working area, a vibration impact test stand, a test host, an electric tester, a power amplifier of the vibration impact test stand and a cooling fan; the temperature box working area and the vibration impact test stand adopt sealed soft connection; the temperature of the temperature box working area is controlled by a temperature box and a controller thereof; the relay to be tested is arranged in the temperature box working area, and the relay is connected with the electric tester by a testing signal cable; the electric tester is connected with the host of the test stand by a communication cable and is connected with the power amplifier of the vibration impact test stand by a control cable; the power amplifier of the vibration impact test stand is connected with the vibration impact test stand by the control cable; and the vibration impact ...

Linear guide rail copying device for lathing and milling crossbeam and manufacturing method thereof

The invention relates to a linear guide rail copying device for lathing and milling a crossbeam and a manufacturing method thereof, wherein the linear guide rail copying device for lathing and milling a crossbeam comprises a crossbeam main body, a linear rolling guide rail and a sliding plate kit, and the maximum speed of the X-axis of a machine tool crossbeam is 16000 mm/min. The linear guide rail copying device for lathing and milling a crossbeam is characterized in that a copying curved surface is manufactured by processing the screwing surfaces and the locating surfaces of two parallel guide rails of the crossbeam main body; the curve of the curved surface is the same as that of the vertical plane of the linear rolling guide rail after the crossbeam is loaded, stressed and deformed, but is in an opposite direction; the linear rolling guide rail and the guide rail surface of the crossbeam main body are fastened into a whole by set screws and impacting blocks on the guide rail surface ...

Cellulose decomposition bacteria and preparation and use thereof

Milled composite ram apparatus

The invention discloses a turn-milling compound ram device which comprises a motor, a gear box, an output shaft, and mechanisms and pipelines which are connected with an accessory head. The turn-milling compound ram device is characterized in that the parts are integrated in the casing of the ram. The motor and a speed reducer are arranged in the upper end of the casing. The external gear of the output shaft is connected with the gear box. The lower opening of the gear box is connected with a comparatively short power output shaft. The maximum output power reaches 52KW; torque moment reaches 2400Nm; and rotary speed reaches 3150r/min. the power output shaft is connected with a connecting structure. A connector is provided with a centering short taper, two wedge-shaped bonding transmission torque moments and four mechanical autolocking tightening mechanisms. The ram is provided with liquid, gas and electric pipe lines on the wall of the casing. The end connector of the ram is provided with ...

Composite cellulose decomposition bacteria and preparation and use thereof

A composite bacterial preparation for decomposing the plant straw or stalk to obtain bacterial fertilizer is prepared from cellulose decomposing bacteria (8-40 vol portions), bacillus (30-50), yeast (10-20) and mould (30-50) through slant culturing, culturing bacterial strains, and preparing the product. Its advantages are low cost, and high effect on increasing yield of crops and improving soil.

Micro-channel water-cooling heat-sink device and packaging method thereof

The invention discloses a micro-channel water-cooling heat-sink device and a packaging method thereof. The device comprises an upper heat-sink block and a lower heat-sink block which are respectively provided with a water inlet and a water outlet, wherein the upper heat-sink block fits with the lower heat-sink block to form a controlled temperature component placing groove; a water-cooling temperature-control structures are respectively arranged at the periphery of the controlled temperature component placing groove on the upper heat-sink block and the lower heat-sink block; and sealing presssheets are arranged at two sides of each water-cooling temperature-control structure. The device is characterized in that the water-cooling temperature-control structures are of a water flow micro-channel structure formed by connecting a plurality of round-toothed micro-channels in series in an interlaced mode. The device is utilized to solve the problems that a general heat-sink water-running mode ...

Functional yoghourt and production method thereof

The invention relates to the technical field of food, in particular to a functional yoghurt taking bee pollen as fermentation auxiliary material and a preparation method thereof. The invention discloses a functional yoghurt which comprises a milk liquid and is characterized in that: the functional yoghurt contains the bee pollen accounting for 0.1 percent to 2 percent of the total weight; the probiotics is 10<6>cfu/ml to 10<9>cfu/ml. The invention also discloses the method for preparing the functional yoghurt. By adding the bee pollen in fermentation raw material, the nutrient composition of the functional yoghurt provided by the invention is more complete compared with the nutrient composition of traditional yoghurts; besides, due to the function of the bee pollen in the auxiliary material, the activity of the probiotics obtained during fermentation is higher and the shelf life is longer than that of the traditional yoghurts. The product tastes good, keeps in good condition, is close to ...

Universal grinding head device for vertical turning center

The invention discloses a universal grinding head device for a vertical turning center, which adopts a numerical control system to stimulate a spindle axis for driving a grinding head, and is characterized in that a fluted disc is arranged at the top of a grinding head upper support and is engaged and located with a fluted disc at the lower end of a ram, is tensioned by blind rivet; a grinding head front support and a grinding head rear support are respectively arranged on the two symmetrical edges of the grinding head upper support so as to form a door frame structure, the lower ends of the grinding head front support and the grinding head rear support are respectively and vertically intersected with a grinding head electric spindle axis standing below the door frame structure through a left horizontal support axis and a right horizontal support axis, and the axis end of the grinding head electric spindle axis is arranged on the grinding head of a grinding wheel. The power of the electric ...

Traction substation calculation method for transient-state analysis of power system

The invention provides a traction substation calculation method for transient-state analysis of a power system, which comprises the following steps of: calculating a fundamental voltage amplitude value and a phase of a bus on a high-voltage side of the traction substation according to active power P and reactive power Q set by a node of the traction substation; calculating real-time node voltage according to the fundamental voltage amplitude value and the phase, and querying a power-voltage curve of the traction substation to obtain actual load power; calculating a fundamental current value on a line side of the traction substation; calculating a real part and a virtual part of each harmonic current value according to a ratio of each harmonic current to fundamental current; and feeding the real part and virtual part of each harmonic current value back to a power system analysis software package (PSASP) main program. Through the traction substation calculation method for transient-state ...

Peptide additive and preparing method thereof

An automatic exchange apparatus of a large-scale boring drilling knife tool of a turn-milling combined machining center