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公开(公告)号：US20230366855A1
公开(公告)日：2023-11-16
申请号：US18352263
申请日：2023-07-14
Applicant: ZHEJIANG UNIVERSITY OF TECHNOLOGY
Inventor： Cong Ding , Shiqing Feng , Zhongyu Piao , Zhipeng Yuan , Jing Liu
Abstract: Disclosed is a method for predicting surface quality of a burnishing workpiece. The method includes the steps: using vibration sensors and signal acquisition instrument to acquire vibration signals generated on a surface of the burnishing workpiece during machining, evaluating the surface quality of the burnishing workpiece based on a coupling coordination degree model, processing signals by using an ensemble empirical mode decomposition method, identifying power spectral density, kurtosis and form factor as signal characteristics, identifying a support vector machine as a decision-making model, optimizing penalty parameters and kernel function parameters by using the Bayesian optimization method, and establishing the relationship between the signal characteristics and the surface quality. The method can quickly identify the signal characteristics for evaluating the workpiece surface quality, thereby improving the workpiece surface quality by intervening in process parameters, making up for the technical defect that condition monitoring cannot be performed during the machining process.
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公开(公告)号：US11793219B2
公开(公告)日：2023-10-24
申请号：US17648604
申请日：2022-01-21
Applicant: Zhejiang University of Technology
Inventor： Xuxia Zhou , Yuting Ding , Zhigang Ke , Yicheng Ding , Wenjie Wang , Qi Zhang , Hao Zhu , Yushan Chu
IPC: A23L3/26 , A23L17/00 , A23L3/3508 , A23L3/358
CPC classification number: A23L3/26 , A23L3/358 , A23L3/3508 , A23L17/00
Abstract: A method for rapid low-salted pickling of aquatic products is disclosed, which includes preliminary processing of raw materials, bacteria-reducing treatment of plasma activation gas, marinade adding and plasma treatment, cyclic bacteria-reducing treatment with the plasma activation gas and vacuum pickling. The marinade adding and plasma treatment include respectively injecting the marinade and plasma working gas into a tumbler, with a flow rate of ionic working gas injected into the tumbler of 1.5-2 L/min and a flow rate of a pickling solution of 0.5-0.8 L/min: and at the same time, starting a plasma power supply, and performing low-temperature plasma treatment on the aquatic products to be pickled, with a plasma treatment voltage of 12000-15000 V, a current of 60-80 mA, a frequency of 8-10 kHz, which is a second bacteria-reducing treatment, with plasma treatment time of 15-20 min.
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43.发明公开公开(公告)号：US20230322194A1
公开(公告)日：2023-10-12
申请号：US18192636
申请日：2023-03-29
Inventor： Qi ZHONG , Enguang XU , Jun WANG , Xianjian HE , Xingxing WANG , Tiwei JIA , Cheng YU , Junxian WANG
Abstract: The present disclosure discloses a digital hydraulic assisted braking system with a high dynamic response and a control method thereof. The system includes a two-position two-way digital switch valve A, a controller, an electromagnetic two-position two-way proportional reversing valve, a two-position two-way digital switch valve B, a displacement detection system, and a pressure detection system. When a vehicle starts, a control system of the present disclosure maintains a preload state and responds to a braking at any time. During an emergency braking, the braking system is open. When the vehicle is shut down, the braking system is closed. Compared with an existing braking method, by implementing the braking method of the present disclosure, a braking response time is greatly shortened, a dynamic performance of a braking response period is improved, and a safety of vehicle braking is further guaranteed.
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公开(公告)号：US20230225314A1
公开(公告)日：2023-07-20
申请号：US17927867
申请日：2020-12-26
Applicant: ZHEJIANG UNIVERSITY OF TECHNOLOGY
Inventor： YAPING XUE , JIE MAO , FENG CHENG , SHUPING ZOU , JIANMIAO XU , YUGUO ZHENG
Abstract: The present invention discloses a method for preparing L-glufosinate ammonium powder. The method includes the following steps: (1) obtaining a transformation solution for performing biocatalytic transformation to prepare L-glufosinate ammonium, and filtering out bacteria to obtain a filtrate; (2) detecting the amount of ammonium sulfate in the filtrate obtained in step (1), adding calcium hydroxide or calcium oxide to react with the ammonium sulfate to produce calcium sulfate precipitates, and filtering out the calcium sulfate precipitates to obtain a filtrate; (3) detecting the amount of glufosinate ammonium in the filtrate obtained in step (2), adding zinc salt, adjusting pH to 5.5-6.8 to produce glufosinate ammonium zinc salt precipitates, and filtering and collecting the glufosinate ammonium zinc salt precipitates; (4) adding a solvent to dissolve the glufosinate ammonium zinc salt precipitates collected in step (3), and adjusting pH of a solution to 2-2.5 to produce L-glufosinate ammonium precipitates; and (5) recrystallizing the L-glufosinate ammonium precipitates obtained in step (4) to obtain purified L-glufosinate ammonium powder. The method provided by the present invention is simple to operate and low in cost, and has a better industrialization prospect.
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45.发明授权公开(公告)号：US11692904B1
公开(公告)日：2023-07-04
申请号：US17965772
申请日：2022-10-14
Applicant: ZHEJIANG UNIVERSITY OF TECHNOLOGY
Inventor： Yuebing Li , Zhouxin Pan , Jiqi Zhu , Zengliang Gao , Weiya Jin , Xing He
IPC: G01M3/32
CPC classification number: G01M3/3281
Abstract: A boss structure sealing experiment device for an IV type hydrogen storage cylinder. The device includes a high-pressure chamber, a sealing leakage structure, a cylinder mouth valve, and a low-pressure chamber, where the high-pressure chamber, the sealing leakage structure, and the low-pressure chamber are tightly connected to one another through flange bolts, and the cylinder mouth valve is tightly connected to the high-pressure chamber through threads. Further disclosed is a sealing experiment system. The system includes a boss structure sealing experiment device, a high-pressure gas supply device, and a leaked gas detection device. The high-pressure gas supply device consists of a hydrogen source, a compressor, a buffer tank, a valve, and a pressure gauge; and the leaked gas detection device consists of a gas mixing chamber, a carrier gas, and a gas leakage detector. Further disclosed is a test method for a boss structure sealing experiment.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20230095076A1
公开(公告)日：2023-03-30
申请号：US17955012
申请日：2022-09-28
Applicant: ZHEJIANG UNIVERSITY OF TECHNOLOGY
Inventor： Feng FENG , Xiaonian Li , Lingling GUO , Yanxia SUN , Chunshan LU , Qunfeng ZHANG , Jiatong JIN , Xiaoliang XU
Abstract: A preparation method of Cu—Pd—CeO2/γ-Al2O3@NP catalyst and a synthesis method of benzopyrazine compounds. The preparation method of the Cu—Pd—CeO2/γ-Al2O3@NP catalyst comprises the following steps: (1) preparing a CeO2/γ-Al2O3 carrier; (2) preparing a CeO2/γ-Al2O3@NP carrier; (3) preparing the Cu—Pd—CeO2/γ-Al2O3@NP catalyst by impregnation method. A one-pot method for synthesizing benzopyrazine compounds of formula (III) includes using an o-nitroaniline compound of formula (I) and an aliphatic diol compound of formula (II) as raw materials, carrying out the one-pot synthesis of the benzopyrazine compound of formula (III) under solvent-free condition and under the combined action of the Cu—Pd—CeO2/γ-Al2O3@NP catalyst prepared by the method and an alkali. The Cu—Pd—CeO2/γ-Al2O3@NP catalyst increases the number of basic sites by doping N and P, and meanwhile loads CeO2 to assist in the extraction of protons, thereby improving the dehydrogenation activity and product selectivity.
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47.发明申请公开(公告)号：US20230069145A1
公开(公告)日：2023-03-02
申请号：US17811221
申请日：2022-07-07
Applicant: Zhejiang University of Technology
Inventor： Haimin Shen , Dong Lv
IPC: B01J21/18 , C07C27/12 , B01J23/06 , B01J23/34 , B01J23/72 , B01J23/745 , B01J23/75 , B01J23/755 , B01J37/04 , B01J37/06 , B01J37/00
Abstract: A plant leaves-derived carbon material doped with two metals and preparation and use thereof are provided, the carbon material prepared by carbonizing, in an inert atmosphere, plant leaves which have absorbed ions of two metals M1 and M2. The metal M1 is Co, Mn, or Fe. The metal M2 is Ni, Cu, or Zn. The carbon material can be used as an efficient, green, and safe catalyst for the selective oxidation of cycloalkanes to produce cycloalkanols and cycloalkanones, and enable an increased selectivity of the target products (thus less by-products), a low yield of cycloalkyl peroxides, reduced reaction temperature, low environmental impact, and safe production.
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48.发明授权公开(公告)号：US11512057B2
公开(公告)日：2022-11-29
申请号：US16615080
申请日：2018-11-05
Applicant: Zhejiang University of Technology
Inventor： Xiaohua Du , Shulin Hao
IPC: C07D239/56 , A01N43/54
Abstract: The present invention discloses unsaturated hydrocarbon pyrimidine thioether compounds of formula (I) and preparation method and application thereof, the compounds of formula (I) exhibit high insecticidal and acaricidal activity against adults, larvae and eggs of harmful mites and insects in the agriculture, civil use and animal technology fields, meanwhile, the compounds also exhibit good bactericidal activity, and can be widely applied as an insecticide, an acaricide and/or a bactericide in agriculture or other fields
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公开(公告)号：US11427528B2
公开(公告)日：2022-08-30
申请号：US16321637
申请日：2016-07-29
Inventor： Xiangjun Shi , Yinghua Shao , Xiaohong Sheng , Xiaoxia Sheng
IPC: C07C69/738 , C07C67/52 , C07C69/712
Abstract: The present invention relates to Form IV of fenofibrate and its preparation methods thereof. Its X-ray powder diffraction pattern expressed as 2θ angle has characteristic peaks at 14.15±0.2°, 15.94±0.2°, 16.49±0.2°, 17.45±0.2°, 20.21±0.2°, and 22.87±0.2°. The present invention also provides preparation methods of Form IV. The preparation methods are simple, easy to operate, short, and have good repeatability. The methods are also non-toxic and non-polluting by using water as a medium and using a pharmaceutically accepted excipient, such as polyvinylpyrrolidone or polyvinyl alcohol as an inducer. The results of stability experiments (light exposure, high humidity and grinding) and solubility tests show that Form IV is stable and has a higher solubility than the prior art crystal form.
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公开(公告)号：US11407948B2
公开(公告)日：2022-08-09
申请号：US17047707
申请日：2018-12-28
Applicant: Zhejiang University of Technology
Inventor： Yong Nie , Qinglong Xie , Ying Duan , Fan Xia , Meizhen Lu , Shangzhi Yu , Xiaojiang Liang , Jianbing Ji
Abstract: A device for pyrolysis reactions includes a feeding pump, a flow meter, an atomizer, a pyrolysis reactor, electromagnetic coils, an electromagnetic induction heating power, a temperature sensor, a temperature controller, a condenser and a product tank. The feeding pump is connected with the flow meter which is connected to the inlet of the atomizer in the pyrolysis reactor. There is a port at the bottom of the pyrolysis reactor, with the port at the top of the pyrolysis reactor connected with the condenser. The condenser is connected with the product tank. The external wall of the pyrolysis reactor is surrounded by electromagnetic coils which are connected with the electromagnetic induction heating power. The temperature sensor is placed between the pyrolysis reactor and the coils, which is connected with the temperature controller. The contact resistance between the atomized material and the hot surface can be.
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