Directional side-blown wind distribution plate

The invention discloses a directional side-blown wind distribution plate and belongs to a wind distribution plate. The directional side-blown wind distribution plate comprises multiple pressing strips, wherein each pressing strip comprises an upper pressing strip body, a lower pressing strip body and a bending part, wherein the upper pressing strip body and the lower pressing strip body are connected through the bending part; bolt holes are respectively formed in the upper pressing strip body and the lower pressing strip body; the multiple pressing strips are transversely and uniformly arranged; the upper pressing strip body and the lower pressing strip body between the front and rear adjacent two pressing strips are laminated and are fixed together through a bolt and a nut; the bolt penetrates through the bolt holes and is connected with the nut; a gasket is arranged between the upper pressing strip body and the lower pressing strip body which are laminated; a cavity between the upper ...

Oxiracetam crystal form and preparation method thereof

The invention relates to an oxiracetam crystal form and a preparation method thereof. The oxiracetam crystal form is fewer in impurity and high in purity, especially is stable in crystal form, good in quality stability and excellent in particle fluidity, is beneficial to transportation, storage and production of pharmaceutical preparations and also can guarantee the curative effect and the safety of the pharmaceutical preparations in clinical application. The invention also provides the preparation method of the oxiracetam crystal form. The method is an environmentally-friendly process, only uses water as a solvent, and is simple to operate and low in production cost; and the prepared product has no residue of an organic solvent, is good in safety and is especially suitable for industrial production.

Maleic acid levorotation amlodipine crystal form and preparation method thereof

The invention discloses a maleic acid levorotation amlodipine crystal form and a preparation method thereof. Peaks exist at 2theta angles of 13.1+-0.2 degrees, 13.5+-0.2 degrees, 15.6+-0.2 degrees, 17.5+-0.2 degrees, 22.5+-0.2 degrees, 23.1+-0.2 degrees, 26.4+-0.2 degrees, 29.0+-0.2 degrees, 30.2+-0.2 degrees and 35.3+-0.2 degrees of the X-ray diffraction of the maleic acid levorotation amlodipine crystal form. The maleic acid levorotation amlodipine crystal form disclosed by the invention is high in content (or purity), low in impurity content and stable for quality, and provides security for the clinical application of maleic acid levorotation amlodipine medicines.

Colloidal electrolyte for internalized battery

The invention provides a colloidal electrolyte for an internalized battery. The colloidal electrolyte for the internalized battery is prepared by the following components in mass percent: 34-37 percent of sulfuric acid, 55-60 percent of purified water, 3.5-8 percent of JN-30 gel, 0.055-0.14 percent of stannous sulfate, 0.055-0.14 percent of magnesium sulfate, 0.055-0.14 percent of polyacrylamide, 0.055-0.14 percent of nano-carbon, 0.0055-0.015 percent of germanium powder, 0.55-1.7 percent of phosphoric acid, 0.015-0.025 percent of indium oxide, 0.05-0.2 percent of antimonous oxide and 0.5-1.0 percent of anhydrous sodium sulfate. By adopting the colloidal electrolyte for the internalized battery, the capacity and various performance indexes of the battery greatly superior to those of a lead-acid battery and the interior of the battery fully gelatinizing can be guaranteed.

Maleic acid levorotation amlodipine drug active pharmaceutical composition and preparation method thereof

The invention provides a maleic acid levorotation amlodipine drug active pharmaceutical composition which comprises the following components: component I: maleic acid levorotation amlodipine; component II: dextrorotation amlodipine; component III: aspartic acid amlodipine; component IV: impurity D; and the active pharmaceutical composition does not contain impurity A, impurity B, impurity C, impurity E, impurity F, impurity G and impurity H basically. The active pharmaceutical composition is stable in quality, and can completely meet the quality requirement of maleic acid levorotation amlodipine preparation on active pharmaceutical composition; and the prepared preparation is safe, effective and controllable in quality, and ensures the clinical effect and medication safety of the maleic acid levorotation amlodipine preparation.

Manufacturing method of pole piece for improving current density

The invention provides a manufacturing method of a pole piece for improving the current density. The manufacturing method comprises the following steps: step 1, washing a basal body; step 2, preparing conducting layer slurry; step 3, preparing a conducting layer; step 4, preparing active substance slurry; and step 5, coating and making the pole piece. A transitional conducting layer is formed between the basal body and the active substance, so that good rate performance and long cycle life of a lithium iron phosphate battery can be guaranteed after the lithium iron phosphate battery is manufactured by the pole piece manufactured by the manufacturing method.

Oxiracetam drug activity composition and preparation method thereof

The present invention provides an oxiracetam drug activity composition, which comprises the following components: a component I, a component II and a component III, wherein the component I is oxiracetam, the component I content is more than or equal to 98.0%, the component II is glycine anhydride, the component II content is more than 0 and is less than or equal to 0.3%, the component III is one or a plurality materials selected from 4-hydroxy-2-oxo-1-pyrrolidineacetic acid, 4-hydroxy-2-oxo-1-pyrrolidine, ethyl 4-hydroxy-2-oxopyrrolidine-1-acetate, methyl 4-hydroxy-2-oxopyrrolidine-1-acetate, and piracetam, the component III content is more than 0 and is less than or equal to 1.5%, the 4-hydroxy-2-oxo-1-pyrrolidineacetic acid content is more than 0 and is less than or equal to 0.5%, and the total content of the component II and the component III is less than or equal to 1.5%. The drug activity composition of the present invention has stable quality, and can completely meet quality requirements ...

Systems, methods and processes for use in treating subsurface formations

Systems, methods, and/or heaters for treating subsurface formations are described. Some systems and methods generally relate to heaters and heating systems for subsurface formations. Some systems and methods generally relate to novel components used for these heaters and heating systems. Some systems and methods generally relate to barriers and components associated with barriers used in treating subsurface formations. Some systems and methods generally relate to production wells and novel components for producing fluids from subsurface formations.

Heating system for a subsurface formation

A heating system for a subsurface formation comprising: an electrical conductor; an insulation layer at least partially surrounding the electrical conductor; and a jacket comprising ferromagnetic material, the jacket at least partially surrounding the insulation layer, wherein the jacket is configured to generate a majority of the heat in the heating system when a time-varying electrical current is applied to the heating system.

Systems and methods for producing hydrocarbons from tar sands with heat created drainage paths

Systems , methods , and processes for use in treating subsurface formations

Systems, methods, and/or heaters for treating subsurface formations are described. Some systems and methods generally relate to heaters and heating systems for subsurface formations. Some systems and methods generally relate to novel components used for these heaters and heating systems. Some systems and methods generally relate to barriers and components associated with barriers used in treating subsurface formations. Some systems and methods generally relate to production wells and novel components for producing fluids from subsurface formations.

Systems , methods , and processes for use in treating subsurface formations

Systems and methods for producing hydrocarbons from tar sands with heat created drainage paths

A system for heating a hydrocarbon containing formation includes a heater having an elongated ferromagnetic metal heater section. The heater is located in an opening in a formation. The heater section is configured to heat the hydrocarbon containing formation. The exposed ferromagnetic metal has a sulfidation rate that goes down with increasing temperature of the heater, when the heater is in a selected temperature range.

Systems, methods, and processes for use in treating sub-surface formations

Systems , methods , and processes for use in treating subsurface formations

A system for heating a hydrocarbon containing formation includes a heater having an elongated ferromagnetic metal heater section. The heater is located in an opening in a formation. The heater section is configured to heat the hydrocarbon containing formation. The exposed ferromagnetic metal has a sulfidation rate that goes down with increasing temperature of the heater, when the heater is in a selected temperature range.

Structural system support for civil building-integrated rooftop power generation system

The disclosure belongs to the photovoltaic technical field, and particularly relates to a structural system support for a civil building-integrated rooftop power generation system. The structural system support includes a roof installation module and a ridge installation module, wherein the roof installation module includes a base and a double-glazed assembly, the double-glazed assembly is fully arranged on a roof in a tilt manner, the double-glazed assembly includes a front end provided with a hook and a rear end provided with an overhead hook, the hook is buckled with the base located on the front end, the overhead hook is buckled with the base located on the rear end, and the ridge installation module includes a ridge guide rail, a ridge shutter support plate and a lambdoid ridge waterproof cover plate. Compared with the prior art, the disclosure has the following beneficial effects: with the assemblies for replacing the glazed tiles, the disclosure can reduce the construction cost and reduce the indoor temperature. FIG. 1

A heating system for a subsurface formation