Separation method and culture method for umbilical cord mesenchymal stem cells

The invention relates to a separation method and a culture method for umbilical cord mesenchymal stem cells. The separation method comprises the following steps: thoroughly cleaning umbilical cord tissue of a healthy newborn by using a PBS (phosphate buffer solution) containing streptomycin and penicillin, and removing blood; shearing the umbilical cord into small sections uniform in length, and mechanically separating, bluntly stripping Wharton' s jelly, and removing umbilical arteries and umbilical veins; uniformly shearing the Wharton' s jelly; re-suspending the sheared Wharton' s jelly through an MSCs (mesenchymal stem cells) culture medium, inoculating to a culture dish with laid gelatin, and putting in a CO2 culture box for cultivation; conducting centrifugal separation to obtain tissue blocks and a cell resuspension solution. The culture method comprises the following steps: enwrapping the culture dish, discarding the gelatin, and washing with the PBS; inoculating the separated out ...

Packed tower with flue gas waste heat recycling function

The invention relates to the technical field of towers, in particular to a packed tower with a flue gas waste heat recycling function, the packed tower comprises a tower body, a wall flow prevention packing mechanism, an air entraining piece and a driving mechanism, a liquid distributor is arranged in the upper end of the tower body, and the wall flow prevention packing mechanism comprises two combined packing cylinders; each combined packing barrel is vertical and is of an inner-outer double-layer structure, the inner layer of each combined packing barrel is fixed in the tower body, the outer layer of each combined packing barrel is rotationally connected with the inner layer of the combined packing barrel, an arc-shaped scraping strip is arranged on the outer layer of each combined packing barrel, the air entraining piece is a negative pressure fan, the driving mechanism comprises a driving shaft and a speed change mechanism, and the speed change mechanism is connected with the driving ...

Sleeve for biological sample in-vitro purification treatment

The invention relates to a sleeve for biological sample in-vitro purification treatment. The sleeve comprises a pipe body, multiple movable baffles, a connecting shaft, a sealing ring and a coaxial locking switch, wherein the pipe body is cylindrical, a flange is arranged at the upper end of the pipe body, multiple first openings are formed in the end face of the bottom of the pipe body, and multiple second openings and convex blocks are arranged at the bottom end of the side wall of the pipe body; the sealing ring is sleeved on the outer side of the second openings; the movable baffles are arranged at the bottom of the pipe body, are of an annular fan shape and are provided with multiple third openings, and the outer edges of the third openings are in one-to-one correspondence with the second openings and are contacted with the sealing ring; the connecting shaft is positioned at a central position of the pipe body, the top end of the connecting shaft is connected with the coaxial locking ...

Bale section cutting machine for bundling forage grass by subsection

Sectional bundled fodder grass producing method

Medicine for increasing intra-abdominal pressure

The invention provides a new application of a middle molecular weight hydroxyethyl starch in reducing intra-abdominal pressure. The middle molecular weight hydroxyethyl starch has molecular weight of 60,000-600,000 Da, molar degree of substitution of 0.15-0.5, and C2/C6 hydroxyethyl substitution ratio of 5-20. The inventive hydroxyethyl starch can effective reduce the intra-abdominal pressure; and can be used for preventing and treating increase of the intra-abdominal pressure caused by inflammatory reactions.

Cab posture comfort evaluation method and device and computer equipment

The invention relates to a cab posture comfort evaluation method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a user-defined human body size, and constructing a human body model of a driver based on the human body size; key elements of the driving posture are recognized, and an environment model of the cab is constructed according to the key elements; establishing a constraint relationship between the human body model and the environment model in the driving state, and simulating the driving posture of the driver based on the constraint relationship in the driving state; and obtaining a cab attitude comfort evaluation result of the driver in the driving attitude through calculation. In the whole cab posture comfort evaluation process, a parameterized human body model is constructed based on RAMSIS software, an environment model is constructed according to key elements of the driving posture, the driving ...

Medicine for increasing intra-abdominal pressure

The invention provides a new application of a middle molecular weight hydroxyethyl starch in reducing intra-abdominal pressure. The middle molecular weight hydroxyethyl starch has molecular weight of 60,000-600,000 Da, molar degree of substitution of 0.15-0.5, and C2/C6 hydroxyethyl substitution ratio of 5-20. The inventive hydroxyethyl starch can effective reduce the intra-abdominal pressure; and can be used for preventing and treating increase of the intra-abdominal pressure caused by inflammatory reactions.

MTBE raw material rectification desulfurization device and method thereof

The invention belongs to the technical field of distillation equipment, and particularly relates to an MTBE raw material rectification desulfurization device and a method thereof.The MTBE raw material rectification desulfurization device comprises a tank body, a feeding pipe, a waste heat utilization assembly and a reboiler, the reboiler is installed at the bottom end of the tank body, the feeding pipe is installed on the side wall of the upper portion of the tank body in a penetrating mode, and a plurality of tower plate assemblies which are stacked up and down are arranged in the tank body; the tower plate assembly comprises two overflow plates and two perforated plates, the tower plate assembly further comprises a bottom plate, and a plurality of horn holes are formed in the bottom plate. A horn hole is formed in a bottom plate of the tower plate, a valve plate is installed in a sliding connection mode by inserting a plurality of supporting plates into the horn hole, a guide piece is ...

Hydraulic straw bale cut into strip blocks

The invention relates to a hydraulic straw bale cut into strip blocks, which is formed by cutting long straw into 4-8cm of short straw and mixing the short straw to be compressed into bale; the straw bale formed by mixing the short straw to be compressed into bale is cut into two or more strip blocks along the longitudinal direction, and then the strip blocks are combined together; and the outside of the whole of the strip blocks combined together is tied with a rope or a band and sheathed with a net bag on a sectional transverse circumferential surface along the longitudinal direction. As the appearance of the hydraulic straw bale is maintained to be a block shape, the original strength is maintained, and the hydraulic straw bale is not easily deformed. When the packaged net bag and rope or band is opened, the strip blocks can be separated from each other, and the signal strip block can be conveniently shaken to be loose when being not supported and reinforced by other adjacent strip blocks ...

Medicine compounds for treating seriously disease

The invention provides a medical composition for severe diseases treatment, comprising hydroxyethyl starch and N(2)-L-alanyl-L-glutamine with the quality rate of 0.05 to 6.0. The hydroxyethyl starch and the N(2)-L-alanyl-L-glutamine are in solution form respectively and packed independently. Aiming at the pathophysiology process of the patients with severe diseases, the medical composition of theinvention can maintain intestinal function, and reduce cell injury and great loss of intestinal liquid to a third space, thus reducing the occurrence of capillary leak syndrome (CLS).

Seat

The invention relates to a seat. The seat comprises a main body, an armrest and a control piece, a containing cavity is formed in the handrail. The control part is movably installed in the containing cavity, the control part has a working state of being exposed out of the containing cavity and an idle state of being contained in the containing cavity, and the control part is electrically connected with the main body and controls the main body. According to the armrest provided by the embodiment of the invention, the control piece is movably mounted in the accommodating cavity of the armrest, so that when a user needs to adjust a seat, the control piece can be exposed out of the armrest, and operation is performed on the control piece. When the control piece does not need to be used, the control piece can be hidden in the containing cavity of the handrail so as to be protected, and the probability that the control piece is in an exposed state for a long time, interferes with external components ...

Method for binding and processing fragmented straw bale

Disclosed is a method for binding and processing fragmented straw bale which comprises, arranging the rice straw along the same direction, depositing into feeding chamber alternatively, motivating the amassed rice straw through transverse cutter to cut the rice straw into segments, compressing the rice straw transversely in the compression chamber with a rammer, pushing the compressed and sectionalized rice straw from the longitudinal opening with a longitudinal push pedal, sleeving ring form ropes or packaging belts sectionwise simultaneously, then binding with ropes or packaging belts longitudinally, or jacketing the netted bag overally. The method can guarantee the leading-in heat transmission during the disinfection procedure through steam heating.

Device for driving workpiece box of spiral bevel gear milling machine

The invention provides a device for driving a workpiece box of a spiral bevel gear milling machine, comprising a bed saddle and also comprising a workpiece box part, a B1 shaft part and a B2 shaft part which are arranged on the bed saddle. Coarse positioning and fine positioning are respectively carried out through the driving adjustment of the B1 shaft part and the B2 shaft part so that the movement of a machining root angle is finished. The device of the invention has the advantages that the difficult-to-machine materials such as friction wheels and the like are removed, the structure is compact, the assembling is convenient, good manufacturability is provided and the workpieces and the cutters can be disassembled conveniently; and the device the advantages of being simple in structure, high in precision, convenient for maintenance, safe, reliable and the like.

Three-dimensional scanning forming method and device, medium and three-dimensional scanning equipment

The invention relates to the technical field of three-dimensional scanning equipment control, and discloses a three-dimensional scanning forming method and device, a medium and three-dimensional scanning equipment. The method comprises the following steps: scanning an area to be scanned along the outer circle of the area to obtain peripheral point cloud data of the area; scanning the outer circle of each building in the area to obtain building exterior point cloud data of the area; scanning the interior of each building in the area to obtain point cloud data in the building in the area; and combining the peripheral point cloud data, the point cloud data outside the building and the point cloud data inside the building, and storing the data as regional point cloud data. According to the method, the accuracy of the regional point cloud data can be improved, and later entity modeling is more suitable for the actual environment.

Method and apparatus for sectionalizing and bundling straw

A method for cutting the rice straw into segments and binding them includes parallelly arranging the collected straws, transverse compression in compressing channel, binding, perpendicular cutting tobecome segments, and packing. Its apparatus is composed of feeding chamber, compression chamber with compressing unit, hydraulic cylinder, piston and its rod, parallel cutting blades and push unit, and an optional cutting chamber.

Combined package oil pressure straw bale convenient for disassembly, assembly and dispersing for use, method and equipment

The invention discloses a combined package oil pressure straw bale convenient for disassembly, assembly and dispersing for use, a production method and production equipment. The production method comprises the following steps of: cutting long straws into short straws with the length of 4-8 cm; filling the short straws into a compression chamber in parts; compressing with a cover each time to form small arrayed straw bales; or dividing the short straws filled into the compression chamber by using division plates into over two small arrayed mows and compressing into small arrayed straw bales; entirely compressing the small arrayed straw bales by a pressure head to form a large straw bale; and bundling up a rope or belt and sleeving a mesh bag outside the large straw bale in the process of pushing off the large straw bale to ensure the original volume and shape and the deformation resistance strength. The small straw bales can be separated by opening the mesh bag and the rope or belt of the ...

Sectional bundled fodder grass and producing method and producing apparatus

Sectional bundled fodder grass is produced through extruding bundlings, transverse cutting into section, end jointing of two or more sections, and bundling with outer packing belt, woven bag or netted bag. The producing apparatus is one grass bundle cutting machine, which has cutter, grass bundle shifting channel or cutting chamber, and pushing mechanism. The present invnetion makes it possible to produce compact sectional fodder grass bundle capable of being transported and used or eaten directly after being unbundled.

Bundled straws and processing method thereof

The invention relates to bundled straws and a processing method thereof. The method comprises the following steps: laterally extruding the harvested straws arranged in the same direction into a dense bundle; sleeving a mesh bag outside the dense bundle in the process of pushing the dense bundle out; putting a label between the dense bundle outside and the mash bag; sealing the mesh bag; and bundling the straws into the bundled straws. The bundled straws are straws which are arranged in the same direction and compassed into bundles; the label is attached to the outside of the bundled straws; the outside of the bundled straws and the label is provided with the mesh bag used for packing; and the bundled straws are bundled by ropes or packaging tapes. Therefore, not only the compressed straw can be bound, but also the mesh bag can prevent individual short or broken straw from dropping out and can prevent the straw end from extending out and being broken and dropped. The label is ensured to ...

Method of compressed package to produce rice straw bundle, and bundled rice straw

Method of compressed package to produce rice straw bundle, its equipment and bundled rice straw

A compressing packing method for producing straw bundles includes such steps as arranging the straw in a compression chamber directionally, transversely compressing, and tying or packing with rope ornet or bag. Its compressing apparatus is composed of a compression chamber and a transverse compressing head. The straw bundle has relatively high density, benefiting storage and transportation.

Method for boling rice straw

The present invention relates to a method for baling rice straw, and is characterized by that the harvested straws are front-back directionally aternatively parallelly arranged, collected and placed into a compression chamber, then the straws are transversely compressed to form compact straw bale. The head and tail aternative arrangement of the rice straws can make the straw bale be compact in volume and uniform in density.

Composition for processing biological sample

The invention relates to a composition for processing a biological sample. The composition for processing the biological sample is composed of pharmaceutically acceptable hydroxyethyl starch, a pharmaceutically acceptable ionic iodine contrast agent, an osmotic pressure regulator and a pH value modifier according to the mass ratio of (2.0-12.0):(2.5-12.0):(0-0.4):(0-0.5). A part of parameters exceed the traditional commercially available similar products at home and abroad when the composition provided by the invention is applied to gathering a mononuclear cell and the like in the biological sample. Thus, the composition has higher safety and validity, and the possibility is created for clinical translation of the products.

Combined large-size bevel gear rolling inspection machine

The invention discloses a combined large-size bevel gear rolling inspection machine comprising a driving part module (A), a driven part module (B) and a driven wheel driving module (C). In the inspection machine, a huge machine tool is divided into modular combined structures and various modules are combined in an abut joint way, thereby reducing the difficulties in designing and machining the machine tool, reducing the cost and bringing convenience to the transportation, the assembly and the adjustment of the machine tool; and particularly by setting the driven wheel driving module, a driven gear is simpler to assemble and align. Digital display devices are arranged in the movable driving module and the driven modules, so that human vision error can be effectively avoided and the accuracy for the machine tool to output data can be improved; meanwhile, sliding plate hydraulic automatic clamping devices are applied in a driving box body and a driven box body which are required to be fixed ...

SFM (serum-free medium) for culturing MSCs (mesenchymal stem cells)

The invention relates to an SFM (serum-free medium) for culturing MSCs (mesenchymal stem cells). Based on volume, the SFM comprises the following components: 10.2 grams per liter of alpha-MEM (alpha-minimum essential medium), 2.4 grams per liter of sodium bicarbonate, 1 to 5 millimoles of L-glutamine, 50 to 300 milligrams per liter of poloxamer 188, 2 to 8 grams per liter of recombinant human albumin, 10 to 20 milligrams per liter of recombinant human transferrin, 2 to 10 milligrams per liter of recombinant human insulin, 1 to 5 millimoles per liter of Hepes, 50 nanomoles of beta-mercaptoethanol, 0.1 to 1 milligram per liter of lipid, 1 to 5 milligrams per liter of trace element, 0.1 to 5 milligrams per liter of glutathione, 0.5 to 5 milligrams per liter of para-aminobenzoic acid, 1 to 50 nanograms per milliliter of hydrocortisone, 20 to 50 milligrams per liter of vitamin PP, 5 to 50 milligrams per liter of vitamin C, 2 to 10mu M of compound shown in a formula I, 5 to 20mu M of compound ...

Method and equipment for processing fragmented straw bale

Disclosed is a method and equipment for processing fragmented straw bale, which comprises a feeding chamber, a compression chamber and a heading press mated with the feeding chamber, the feeding chamber and the compression chamber are in communication with a passage and are provided with cutting blades, the heading presses of the discharge port and the discharge heading machine are arranged on the two sides of the opposite compression chambers, a plug-in baffle plate is arragned between the compression chamber and the passage.

Bevel gear grinding machine tool

The invention provides a bevel gear grinding machine tool which comprises a workpiece mechanism, a grinding wheel dressing mechanism, a tooth aligning mechanism and a grinding wheel mechanism. The machine tool can move in six directions including an X linear movement direction, a Y linear movement direction, a Z linear movement direction, an A-axis rotation direction, a B-axis rotation direction and a C-axis rotation direction, the grinding wheel dressing mechanism comprises dresser guide rails, an oil cylinder, a grinding wheel dressing tank and a horizontal adjusting column, the tooth aligning mechanism comprises a tooth aligning air cylinder and a tooth aligning measuring head, the tooth aligning air cylinder is fixedly arranged on a grinding wheel tank via an air cylinder support, a piston connecting piece is arranged on a side of the steel support, a piston is connected with the air cylinder by the piston connecting piece, and the tooth aligning measuring head is arranged at the front ...

Medicine compounds for treating seriously disease

The invention provides a medical composition for severe diseases treatment, comprising hydroxyethyl starch and N(2)-L-alanyl-L-glutamine with the quality rate of 0.05 to 6.0. The hydroxyethyl starch and the N(2)-L-alanyl-L-glutamine are in solution form respectively and packed independently. Aiming at the pathophysiology process of the patients with severe diseases, the medical composition of the invention can maintain intestinal function, and reduce cell injury and great loss of intestinal liquid to a third space, thus reducing the occurrence of capillary leak syndrome (CLS).

Online oil filling and purifying device for hydraulic equipment

The invention discloses an online oil filling and purifying device for hydraulic equipment. The main design points are that: an oil tank is provided with a vacuumization control system; the oil tank is divided into an absolute oil tank and a dirty oil tank; the absolute oil tank is provided with an oil inlet pipeline; the dirty oil tank is provided with an oil drain valve; an online circulating filtration system comprises a dirty oil pipeline communicated with the dirty oil tank and an absolute oil pipeline communicated with the absolute oil tank; the dirty oil pipeline is provided with a dirty oil electromagnetic control valve; the tips of the dirty oil pipeline and the absolute oil pipeline are respectively provided with a dirty oil pipeline quick connector and an absolute oil pipeline quick connector which are communicated with the oil tank of the hydraulic equipment; the dirty oil pipeline is communicated with the absolute oil pipeline through an isolation electromagnetic valve, aone-way ...

Composition for lysing red cells, red cell lysing reagent and application of red cell lysing reagent

The invention relates to a composition for lysing red blood cells, a red blood cell lysing reagent and application of the red blood cell lysing reagent. The invention provides the composition for lysing the red blood cells for the first time. The composition consists of ammonium chloride, bicarbonate, edetic acid or edetate and a lysing assistant in a mass ratio of (800-820):(80-100):(0.3-3):(2-10). The invention further provides a red blood cell lysing reagent, which is obtained by dissolving the composition for lysing the red blood cell into water. The invention further provides application of the red blood cell lysing reagent for lysing red blood cells in a biological sample. According to the technical scheme, the problems of low cell lysing efficiency and low sample compatibility due to use of NH4Cl are solved, the adverse influence of a surfactant which is used individually on blood cell surface and internal antigen detection is eliminated, and the operation controllability is enhanced ...