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公开(公告)号：US20210372973A1
公开(公告)日：2021-12-02
申请号：US17399693
申请日：2021-08-11
Inventor： Yingqin WU , Yanhong LIU , Tong WANG , Zuodong WANG , Longmiao YUAN , Zhiyu WANG
IPC: G01N30/72 , B01J20/22 , G01N30/16 , B01J20/281
Abstract: A method for separating diastereomers of pristane. A pristane sample is prepared, and then injected into a chromatographic instrument equipped with a chiral chromatographic column, where a stationary phase of the chiral chromatographic column has a preset pore size. The pristane diastereomers in the pristane sample are separated by the chiral chromatographic column, and the components produced by the separation of the pristane diastereomers sequentially enter a mass spectrometer for detection and analysis.
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公开(公告)号：US20240310254A1
公开(公告)日：2024-09-19
申请号：US18676476
申请日：2024-05-28
Inventor： Caixia ZHANG , Ningjing TAN
Abstract: A soil sample purification device includes a liquid supplying mechanism and a liquid feeding mechanism. The liquid supplying mechanism includes fluid injection channels, a fluid collector, a mounting plate and fluid supplying boxes. The fluid supplying boxes are movably connected to the mounting plate, and are configured to respectively carry a single fluid material. The fluid collector is provided with a fluid collecting chamber, which is communicated with the fluid supplying boxes respectively via the fluid injection channels. The fluid supplying boxes are configured to move between a fully-loaded position and an unloaded position. The liquid feeding mechanism includes a liquid feeding box and a plugging member. The plugging member is movably provided on the liquid feeding box, and can move in a specified direction to block the outlet channel, or move in a direction opposite to the specified direction to unblock the outlet channel.
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13.发明授权公开(公告)号：US12065797B1
公开(公告)日：2024-08-20
申请号：US18645469
申请日：2024-04-25
Inventor： Guoyu Li , Yapeng Cao , Sai Ying , Dun Chen , Qingsong Du
CPC classification number: E02D31/14 , E02D5/80 , E02D2600/10
Abstract: The present disclosure provides a rod-type pile foundation for preventing a pile body from being heaved and an operating method. The rod-type pile foundation comprises a base, a support block fixed inside the base, a support plate movably disposed at a top of the support block by a guide structure, and an anti-frost heaving component located at a lower portion of the support block. The anti-frost heaving component includes a first connecting rod rotationally connected with the support block and one or more telescopic rods. One end of each of the telescopic rods is fixed on the first connecting rod. A scraping plate is fixed at another end of each of the telescopic rods. The support plate is in transmission connection with the first connecting rod through a transmission component. The transmission component converts a vertical linear motion of the support plate into a rotation of the first connecting rod.
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公开(公告)号：US11313840B2
公开(公告)日：2022-04-26
申请号：US17399693
申请日：2021-08-11
Inventor： Yingqin Wu , Yanhong Liu , Tong Wang , Zuodong Wang , Longmiao Yuan , Zhiyu Wang
Abstract: A method for separating diastereomers of pristane. A pristane sample is prepared, and then injected into a chromatographic instrument equipped with a chiral chromatographic column, where a stationary phase of the chiral chromatographic column has a preset pore size. The pristane diastereomers in the pristane sample are separated by the chiral chromatographic column, and the components produced by the separation of the pristane diastereomers sequentially enter a mass spectrometer for detection and analysis.
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公开(公告)号：US20220065760A1
公开(公告)日：2022-03-03
申请号：US17524181
申请日：2021-11-11
Inventor： Chunhui CAO , Liwu LI , Huanhuan ZHAO , Zhongping LI , Li DU
Abstract: Disclosed are a gas purification device, and an apparatus and a method for measuring isotopes of noble gases. The gas purification device includes a housing and a purification mechanism. The housing is provided with a reaction chamber. The reaction chamber is in a vacuum state and is configured to hold a gas sample. The purification mechanism is arranged on the housing and is provided with a cavity. The cavity in the purification mechanism is communicated with the reaction chamber. The purification mechanism is configured to purify the gas sample in the reaction chamber to obtain a purified gas.
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Patent Agency Ranking
公开(公告)号：US20250164363A1
公开(公告)日：2025-05-22
申请号：US19034240
申请日：2025-01-22
Inventor： Caixia ZHANG , Yunfa MIAO , Ningjing TAN , Yongtao ZHAO , Xuelian WANG
Abstract: A soil sample digestion device, including a base, a driving mechanism, a first disk, a heating mechanism, a digestion vessel, a second disk and two liquid adding mechanisms. The driving mechanism and the first disk are mounted on the base. The heating mechanism and the digestion vessel are mounted on the first disk. The heating mechanism is configured to heat a solution in the digestion vessel. The second disk is mounted on the driving mechanism, and is configured to be driven by the driving mechanism to ascend and descend, or rotate relative to the first disk. The two liquid adding mechanisms are mounted on the second disk, and are configured for liquid addition to the digestion vessel.
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公开(公告)号：US20240342687A1
公开(公告)日：2024-10-17
申请号：US18426149
申请日：2024-01-29
Inventor： Yingqin WU , Rong MA , Yanhong LIU , Longmiao YUAN , Zhiyu WANG , Lantian XING , Yan LIU , Yongxin CHEN , Chuntao TIAN
CPC classification number: B01J20/268 , B01D15/08 , C08F220/06 , C08J9/26 , G01N30/7206 , B01J2220/54 , B01J2220/58 , C08J2333/02 , G01N2030/025
Abstract: A preparation method of a molecularly imprinted polymer (MIP) for separation and concentration of 4-methylsterane compounds is provided. A template molecule, a functional monomer, a porogen, an initiator and a cross-linking agent are mixed and subjected to polymerization to prepare a polymer with the template molecule, which is then treated to remove the template molecule, so as to give the desired MIP. The template molecule is β-sitosterol or deoxycholic acid. The obtained molecularly imprinted polymer has multiple stable hole structures and binding sites inside, and has memory and recognition functions for the 4-methylsterane compounds, exhibiting excellent specific adsorption performance. The MIP can contribute to the accurate identification of correlation between depositional environment and maturity of crude oils or source rocks. A molecularly imprinted polymer prepared by such method, a chromatographic column and an application thereof are also provided.
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公开(公告)号：US12085547B2
公开(公告)日：2024-09-10
申请号：US18389671
申请日：2023-12-19
Inventor： Chunhui Cao , Liwu Li , Huanhuan Zhao
CPC classification number: G01N33/0036
Abstract: A buffer assembly for a noble gas isotope analysis device, including an air inlet pipe and an air-pressure buffer member. The air inlet pipe is connected to the noble gas isotope analysis device, and is provided with a valve. The air-pressure buffer member is provided in the air inlet pipe, and includes a connecting pipe arranged inside the air inlet pipe. Multiple pneumatic components are sleeved outside the connecting pipe, and are configured to be deformed under the action of a gas flow to decelerate the gas flow. A noble gas isotope analysis device including the buffer assembly and an isotope analysis method using the noble gas isotope analysis device are also provided.
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公开(公告)号：US12085212B1
公开(公告)日：2024-09-10
申请号：US18639942
申请日：2024-04-18
Inventor： Yapeng Cao , Guoyu Li , Changqing Li , Kai Gao , Dun Chen
Abstract: A pipeline support device for preventing melting and sinking based on gas heat exchange. The pipeline support device may be installed in a trench, and the pipeline support device may include a support frame and a gas heat exchange mechanism arranged on one side of the support frame. A bottom of the support frame may be fixed in the trench, a support partition may be fixed inside the support frame, the support partition separating the bottom of the support frame to form an upper chamber and a lower chamber. The gas heat exchange mechanism may include two groups of ventilation components, a group of air changing component and a group of control component. The control component may control opening and closing of ventilation openings of the ventilation pipes.
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公开(公告)号：US12048279B2
公开(公告)日：2024-07-30
申请号：US18523823
申请日：2023-11-29
Inventor： Heng Ren , Wenzhi Zhao , Yanli Zhuang , Hai Zhou , Qiyue Yang , Weicheng Luo , Jun Du , Zhitao Wang
IPC: A01G9/24 , A01G9/029 , F24F140/30
CPC classification number: A01G9/0293
Abstract: A seed development device for Psammochloa villosa using condensate water in desert areas includes: a cultivation box, a top surface of the cultivation box is connected to a cooler and condensate water collecting units through a support frame. Each condensate water collecting unit includes an outer frame, sleeve pipes, a middle frame, a cold air cavity, water collecting rods, a water collecting tank and a delivery pipe. The delivery pipe is connected to the cultivation box. When an outdoor temperature cannot complete condensation of water vapor, the cooler completes cooling of the cold air cavity and water collecting rods until condensate water collection is completed, water drops fall into the water collecting tank to complete water collection, which is used for water supplement of seed development of Psammochloa villosa, thus reducing the process of artificial water supplement and improving the development efficiency of seeds of Psammochloa villosa in desert areas.
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