Abstract: A method for preparing ginseng extract rich in rare ginsenosides is disclosed. Ginseng roots or ginseng stems and leaves are extracted, enzymatically hydrolyzed and treated with high temperature and high pressure. The preparation method can quickly and effectively increase the proportion of rare ginsenosides in the ginseng extract. After in vitro antioxidant experiments and in vivo experiments with Hidradenitis elegans nematode, the extract and related complexes were proved to be effective in antioxidant, anti-oxidative stress, and improving age-related muscle decline and other dysfunctions. After genetic and metabolomic studies, the anti-aging mechanism was proved to be related to the expression of genes associated with nutrient sensing, stress-related pathways and redox processes, and showed innate immune response and redox process GO enrichment, proving its oxidative stress resistance.

Abstract: A staged cementing device includes a cylindrical body having an inner chamber. A circulating opening and a liquid inlet recess open to the inner chamber are arranged on a wall of the body. An opening assembly is arranged in the body, which has an opening sleeve and an opening seat located in the opening sleeve. Initially the opening sleeve is connected with the body through a first shear pin and covers the circulating opening, and the opening seat is connected with the opening sleeve through a second shear pin and covers the liquid inlet recess. A packer includes a packing valve body and a packer rubber. The packing valve body includes a flow channel in communication with the liquid inlet recess, and the packer rubber includes a liquid reservoir in communication with the flow channel. The second shear pin is sheared off in response to primary cementing procedure.

Abstract: The present invention belongs to the field of drug preparation and detection, and particularly discloses a preparation method for a Eucommia ulmoides Oliv. leaf extract. The extract is obtained from Eucommia ulmoides Oliv. leaves (the mixture of the Eucommia ulmoides Oliv. leaves and Eucommia ulmoides Oliv. male flower) by enzymolysis and extraction of ethanol and water, and can effectively solve the problem that the extract is not easy to spray dry (the Eucommia ulmoides Oliv. leaves contain colloidal substances). The pharmacodynamic experiment proves that the Eucommia ulmoides Oliv. leaf extract has good effect of protecting the health of the renal function. The present invention also develops a detection method for the extract, which not only realizes the quality control of the extract, but also has the advantages of good repeatability and stability.

Abstract: This application belongs to the field of biotechnology and discloses a method for producing a clam active peptide. The method for producing a clam active peptide comprises cleaning fresh clam meat with water, adding water and homogenizing with a colloid mill to prepare a clam meat slurry; adding water and complex protease for enzymolysis of the clam meat slurry, and heating to inactivate enzyme after the enzymolysis; centrifuging to collect an enzymatic hydrolyzate, capturing the enzymatic hydrolyzate having a molecular weight of lower than 2 KDa through microfiltration-ultrafiltration-nanofiltration membrane filtration, and drying to obtain the clam active peptide.

Abstract: A preparation method and application of an anti-inflammatory and kidney-protecting clam peptide are disclosed. The method includes the steps of: cleaning and crushing the whole meat of a HonDau clam to obtain serous fluid, adding compound protease accounting for 0.1-0.3% of the weight of the serous fluid, carrying out enzymolysis, centrifugation, membrane separation and purification, and spray drying to obtain clam peptide powder. The clam peptide is prepared by adopting the HonDau clam, and is used for relieving the inflammatory reaction of an organism and the damage of renal function caused by hypertension, and is further applied to the inflammation and the damage of kidney caused by other diseases and health care foods with related functions.

Abstract: Disclosed is a speaker module, comprising a module housing and a speaker unit accommodated in the module housing. The speaker unit partitions a module cavity encircled by the module housing into two cavities, namely a front acoustic cavity and a rear acoustic cavity. A separator component is provided within the rear acoustic cavity. The separator component partitions the rear acoustic cavity into an accommodating cavity and a sound-absorbing cavity. The sound-absorbing cavity is filled with sound-absorbing particles. An antistatic material is added into the housing material of the module housing at where the sound-absorbing cavity is located, or the antistatic material is coated on the surface of the module housing at where the sound-absorbing cavity is located, and the antistatic material is either an electrically-conductive material or an antistatic agent.

Abstract: The present invention relates to the technical field of electroacoustic products, and discloses sound-absorbing material, sound-absorbing particle, speaker module manufacturing processes, a particle and a module. The process comprises the following steps: placing a raw powder of a porous sound-absorbing material into a heating furnace to perform calcination, and introducing a processing gas during the calcination, wherein the calcination temperature is 120° C. to 800° C., and the calcination time is 6 h to 72 h.

Abstract: Disclosed is a sound-absorbing component, comprising a housing and sound-absorbing particles filled in the housing. An antistatic material is added to the materials from which the housing is made, or the antistatic material is coated on the surface of the housing. Also disclosed is a speaker module applying the sound-absorbing component. The sound-absorbing component of the present invention greatly increases the fill rate of the sound-absorbing particles in the housing, thus allowing the space of the rear acoustic cavity of the speaker module applying the sound-absorbing component to be fully utilized, and allowing the sound-absorbing particles to fully exert the effects thereof in improving the acoustic properties of the speaker module.

Abstract: Disclosed is a speaker module, comprising a module housing and a speaker unit accommodated in the module housing. The speaker unit partitions a module cavity encircled by the module housing into two cavities, namely a front acoustic cavity and a rear acoustic cavity. A separator component is provided within the rear acoustic cavity. The separator component partitions the rear acoustic cavity into an accommodating cavity and a sound-absorbing cavity. The sound-absorbing cavity is filled with sound-absorbing particles. An antistatic material is added into the housing material of the module housing at where the sound-absorbing cavity is located, or the antistatic material is coated on the surface of the module housing at where the sound-absorbing cavity is located, and the antistatic material is either an electrically-conductive material or an antistatic agent.

Abstract: A sound absorption component and a loudspeaker module having the sound absorption component comprises a hauling shell and sound absorbing particles that are packaged within the hauling shell, wherein the hauling shell is provided with an opening, the opening of the hauling shell is provided with an opening sealing member for sealing the sound absorbing particles, the material of the hauling shell is sound absorbing cotton, and the sound absorbing particles are formed by granulation of porous material raw powder; and the shape of the sound absorption component matches with the shape of the space to be filled by the sound absorption component. The sound absorption component and the loudspeaker module having the sound absorption component sufficiently utilizes the space of the rear vocal cavity of the module, and sufficiently utilizes the sound absorption performance of the filling sound absorbing particles, and the product has good acoustic performance.

Abstract: Disclosed is a sound-absorbing component, comprising a housing and sound-absorbing particles filled in the housing. An antistatic material is added to the materials from which the housing is made, or the antistatic material is coated on the surface of the housing. Also disclosed is a speaker module applying the sound-absorbing component. The sound-absorbing component of the present invention greatly increases the fill rate of the sound-absorbing particles in the housing, thus allowing the space of the rear acoustic cavity of the speaker module applying the sound-absorbing component to be fully utilized, and allowing the sound-absorbing particles to fully exert the effects thereof in improving the acoustic properties of the speaker module.

Abstract: The present invention relates to the technical field of electroacoustic products, and discloses sound-absorbing material, sound-absorbing particle, speaker module manufacturing processes, a particle and a module. The process comprises the following steps: placing a raw powder of a porous sound-absorbing material into a heating furnace to perform calcination, and introducing a processing gas during the calcination, wherein the calcination temperature is 120° C. to 800° C., and the calcination time is 6 h to 72 h.

Abstract: A sound absorption component and a loudspeaker module having the sound absorption component comprises a hauling shell and sound absorbing particles that are packaged within the hauling shell, wherein the hauling shell is provided with an opening, the opening of the hauling shell is provided with an opening sealing member for sealing the sound absorbing particles, the material of the hauling shell is sound absorbing cotton, and the sound absorbing particles are formed by granulation of porous material raw powder; and the shape of the sound absorption component matches with the shape of the space to be filled by the sound absorption component. The sound absorption component and the loudspeaker module having the sound absorption component sufficiently utilizes the space of the rear vocal cavity of the module, and sufficiently utilizes the sound absorption performance of the filling sound absorbing particles, and the product has good acoustic performance.