公开(公告)号：US20230340727A1

公开(公告)日：2023-10-26

申请号：US18305311

申请日：2023-04-21

Applicant: Zhejiang University of Science and Technology

Inventor： Huifang ZHAO ,  Daliang GUO ,  Chian FANG ,  Shouyi HAN ,  Yike HUANG ,  Liangyu HUANG ,  Gaorong HU ,  Yuechen ZHOU ,  Zhiyuan TU

IPC: D21F11/00 ,  D21H13/02 ,  D21H27/10 ,  D21D1/02

CPC classification number: D21F11/00 ,  D21D1/02 ,  D21H13/02 ,  D21H27/10

Abstract: Disclosed is an environmentally-friendly method for enhancing mechanical properties of a high antibacterial nano dialysis paper for medical protection, includes following steps: a, preparing pulp components, and taking 40-60 parts of hardwood pulp, 10-20 parts of polyvinyl alcohol fiber, 30-50 parts of softwood pulp, 10-20 parts of cellulose fiber by mass; b, putting the hardwood pulp, the polyvinyl alcohol fiber, the softwood pulp and the cellulose fiber into a beater for beating to make a pulp, and then adding modified chitosan accounting for 1-5% of a weight of the pulp into the pulp, and defibering for 10-20 minutes at a rotating speed of 1500-2000 revolutions per minute in a defibrator; and c, carrying out papermaking with the pulp after defibering to form a dialysis paper finished product.

公开(公告)号：US11486945B1

公开(公告)日：2022-11-01

申请号：US17857380

申请日：2022-07-05

Applicant: Zhejiang University of Science and Technology

Inventor： Shuguang Li ,  Jinsheng Liu ,  Ming Jin ,  Kenneth Tetteh Akiti ,  Eric-Theophilus Tochukwu Nwodom

IPC: G01R33/26

Abstract: A device for measuring a scalar magnetic field based on pulsed optical pumping, including: a first laser, a first isolator, a first λ/2 waveplate, a first polarizing beam splitter, a first coupler, a first spectrum analyzer, a reflector, an atomic sensor probe, a second λ/2 waveplate, a second polarizing beam splitter, a first photoelectric converter, a second photoelectric converter, a data acquisition system, a second laser, a second isolator, an acousto-optic modulator, a third λ/2 waveplate, a third polarizing beam splitter, a second fiber coupler, a second spectrum analyzer, a λ/4 waveplate and a beam expander. Two planar reflectors are respectively arranged at two sides of the atomic sensor probe and face towards the atomic sensor probe, and are arranged parallel to the pump beam input to the atomic sensor probe.

公开(公告)号：US11319919B2

公开(公告)日：2022-05-03

申请号：US17353557

申请日：2021-06-21

Applicant: HANGZHOU LHD INSTITUTE OF NEW ENERGY, LLC ,  ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  HANGZHOU LINDONG NEW ENERGY TECHNOLOGY INC. ,  ZHEJIANG ZHOUSHAN LHD ENERGY DEVELOPMENT CO., LTD.

Inventor： Xiaonan Miao ,  Dongfu Zhao ,  Zhenhua Wu ,  Jia Li ,  Yicheng Ding ,  Qipeng Li ,  Huajun Xu ,  Lijun He ,  Huafeng Zhong ,  Chao Chen ,  Dongfang Hu ,  Yangjie Mao ,  Enjia Xu ,  Yunlin Xie ,  Chenhao Wu ,  Enle Lin ,  Fuwei Zhu ,  Anpeng He ,  Hongyue Tian ,  Fan Yang

IPC: F03B11/06 ,  F03B11/00 ,  F16C33/78 ,  F16C33/66 ,  F03B13/26

Abstract: This invention provides a rolling bearing protection device and a vertical-axis tidal current energy generating device applying the same. The vertical-axis tidal current energy generating device includes a frame, a vertical-axis hydraulic generator, a rolling bearing, and a rolling bearing protection device. The vertical-axis hydraulic generator includes a main shaft disposed vertical to a horizontal surface, one end of the main shaft is rotatably disposed at a bottom of the frame. The rolling bearing is sleeved on one end of the main shaft. The rolling bearing protection device is disposed above the rolling bearing. The rolling bearing protection device includes a first sealing protection device, a first water leak-proof chamber, and a second sealing protection device disposed in sequence along a gravity direction.

公开(公告)号：US09861722B2

公开(公告)日：2018-01-09

申请号：US15201597

申请日：2016-07-04

Applicant: Hangzhou Singclean Medical Products Co., Ltd ,  Zhejiang University of Science and Technology

Inventor： Zhiguo Zhang ,  Yange Suo ,  Wei Huang ,  Weiqing Sun

IPC: A61L24/00 ,  A61L24/08 ,  C08B15/04

CPC classification number: A61L24/0036 ,  A61L24/08 ,  A61L2400/04 ,  C08B15/04 ,  C08L1/04

Abstract: Disclosed is a method for preparing an oxidized cellulose hemostatic product, including using a sodium hydroxide solution with the concentration of 1 to 5% to pre-process a cellulose product; after removing lignins or impurities on the fiber surface, using an alkaline solution to activate the fiber surface further; after the activating treatment, using demin-water for washing until it is neutral and drying the obtained cellulose product in air to obtain a raw material; using a sodium hydroxide solution with the concentration of 5 to 20% as a solvent; adding the cellulose product, carbamide and ZnO that are 3 to 10%, 2% and 2% of the sodium hydroxide solution respectively.

公开(公告)号：US20240044081A1

公开(公告)日：2024-02-08

申请号：US18327080

申请日：2023-06-01

Applicant: ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： DALIANG GUO ,  LIZHENG SHA ,  HUIFANG ZHAO ,  JING LI ,  YINCHAO XU ,  XIN ZHANG ,  BEI LIU ,  TIANZHONG YUAN ,  ZIYANG CHANG ,  QIANYU SUN ,  YAHUI MENG

IPC: D21H13/50 ,  D21H25/06

CPC classification number: D21H13/50 ,  D21H25/06

Abstract: Disclosed is a preparation method of double-layer carbon-paper base paper with high uniformity and gradient pores, including adding carbon fibers to alkali lignin aqueous solution for treatment, controlling the alkali lignin aqueous solution to reach subcritical water conditions, and modifying the carbon fibers by sodium phenol reactive groups under the subcritical water conditions of the alkali lignin, for improving hydrophilic groups on a surface of the carbon fibers and a surface rough structure; further, modifying the carbon fibers to produce carbon nanotube clusters on the surface of the carbon fibers to obtain surface-thermally-modified carbon fibers, and adding the surface-thermally-modified carbon fibers to a dispersant for dispersion, stirring together with auxiliary materials to prepare a mixed slurry, and preparing the mixed slurry into the carbon-paper base paper by wet forming process.

公开(公告)号：US11738326B2

公开(公告)日：2023-08-29

申请号：US17919288

申请日：2020-07-16

Applicant: ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Shengdao Shan ,  Wenbiao Zhang ,  Haifeng Zhuang ,  Genxing Pan ,  Qiaona Xie

IPC: B01J20/20 ,  C05G3/40 ,  C05G5/40 ,  B01J20/28 ,  B01J20/30 ,  B01J20/32 ,  C02F1/28 ,  C05C11/00 ,  C05C3/00 ,  C02F101/10 ,  C02F101/16 ,  C02F103/20

CPC classification number: B01J20/20 ,  B01J20/28061 ,  B01J20/3021 ,  B01J20/3071 ,  B01J20/3078 ,  B01J20/3085 ,  B01J20/3204 ,  B01J20/3219 ,  B01J20/3248 ,  C02F1/283 ,  C05C3/00 ,  C05C11/00 ,  C05G3/40 ,  C05G5/40 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2103/20

Abstract: A preparation method of charcoal-based fertilizer is provided. Particularly, a special pig manure charcoal modified by amino grafting, a preparation method thereof, and its application in the reuse of nitrogen from farmland drainage are provided. The preparation method includes the following steps: 1) drying raw pig manure to a moisture content of 80%-85% and carrying out pickling, drying, and crushing successively to obtain a dried pig manure powder; 2) conducting liquid nitrogen pretreatment and high-temperature charcoalization to obtain an expanded pig manure charcoal; 3) performing carboxylation treatment to obtain a carboxylated pig manure charcoal; 4) amino grafting: adding an ammonia liquor to the carboxylated pig manure charcoal obtained in step 3), stirring for 20-24 h in an oil bath at 200-240° C.; washing and filtering; and drying and grinding to obtain the special pig manure charcoal modified by amino grafting.

公开(公告)号：US20230148315A1

公开(公告)日：2023-05-11

申请号：US17919288

申请日：2020-07-16

Applicant: ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Shengdao SHAN ,  Haifeng ZHUANG ,  Genxing PAN ,  Qiaona XIE

IPC: B01J20/20 ,  B01J20/30 ,  B01J20/32 ,  B01J20/28 ,  C05G3/40 ,  C05C11/00 ,  C05G5/40 ,  C02F1/28

CPC classification number: B01J20/20 ,  B01J20/3021 ,  B01J20/3071 ,  B01J20/3085 ,  B01J20/3078 ,  B01J20/3219 ,  B01J20/3248 ,  B01J20/3204 ,  B01J20/28061 ,  C05G3/40 ,  C05C11/00 ,  C05G5/40 ,  C02F1/283 ,  C02F2103/20

Abstract: A preparation method of charcoal-based fertilizer is provided. Particularly, a special pig manure charcoal modified by amino grafting, a preparation method thereof, and its application in the reuse of nitrogen from farmland drainage are provided. The preparation method includes the following steps: 1) drying raw pig manure to a moisture content of 80%-85% and carrying out pickling, drying, and crushing successively to obtain a dried pig manure powder; 2) conducting liquid nitrogen pretreatment and high-temperature charcoalization to obtain an expanded pig manure charcoal; 3) performing carboxylation treatment to obtain a carboxylated pig manure charcoal; 4) amino grafting: adding an ammonia liquor to the carboxylated pig manure charcoal obtained in step 3), stirring for 20-24 h in an oil bath at 200-240° C.; washing and filtering; and drying and grinding to obtain the special pig manure charcoal modified by amino grafting.

公开(公告)号：US11214656B2

公开(公告)日：2022-01-04

申请号：US16729467

申请日：2019-12-29

Applicant: Hangzhou Singclean Medical Products Co., Ltd ,  Zhejiang University of Science and Technology

Inventor： Zhiguo Zhang ,  Yange Suo ,  Wei Huang ,  Weiqing Sun

IPC: C08J3/075 ,  C08J3/24 ,  A61L27/20

Abstract: A preparation method of a cross-linked sodium hyaluronate gel is disclosed, which including: preparing an alkaline aqueous solution of hyaluronic acid: formulating a sodium hyaluronate alkali liquor with the concentration of 10-30% g/ml; and carrying out a cross-linking reaction: the cross-linking agent used in the cross-linking reaction being divinyl sulfone or 1,4-butanediol diglycidyl ether, the cross-linking reaction being carried out in an alkaline aqueous solution of hyaluronic acid, the reaction temperature of the cross-linking reaction being 20-40° C., the time of the cross-linking reaction being 4-8 h, and the like. The method of this invention has many advantages, such as easily available raw materials, mild reaction conditions, high cross-linking efficiency, simple process and post-treatment, and easy operation. The obtained cross-linked sodium hyaluronate has a three-dimensional network structure by the crosslinking reaction with good mechanical properties, and can be used as a good drug carrier and a tissue engineering scaffold material.

公开(公告)号：US11186809B1

公开(公告)日：2021-11-30

申请号：US17072054

申请日：2020-10-16

Applicant: Zhejiang University of Science and Technology

Inventor： Shengdao Shan ,  Tianyong Xiang ,  Jingming Li ,  Ping Zheng ,  Huicai Cheng ,  Wu Huang ,  Zhirong Wang ,  Baolan Hu ,  Changai Zhang

IPC: C12M1/107 ,  C12M1/00 ,  C12M1/26

Abstract: A high-concentration anaerobic fermentation apparatus includes a liquid accumulation tank, a fermentation vessel, a feeding assembly, and a biogas residue collecting bin. The feeding assembly includes a hopper and a return conveyor belt including a first portion extending downward from the hopper till below a liquid level, a second portion extending upward from a bottom end of the first portion till above the liquid level, a third portion extending downward from a top end of the second portion till the liquid level, and a fourth portion extending upward from a bottom end of the third portion till out of the liquid level and above the biogas residue collecting bin. A pressure-feed flange is disposed at an outer side of the fermentation vessel, a feed channel is formed between the pressure-feed flange and the first portion, and a discharge channel is formed between the pressure-feed flange and the fourth portion.

公开(公告)号：US20180179301A1

公开(公告)日：2018-06-28

申请号：US15607561

申请日：2017-05-29

Applicant: Zhejiang University of Science and Technology ,  Hangzhou Singclean Medical Products Co., Ltd

Inventor： Zhiguo Zhang ,  Wei Huang ,  Yange Suo

IPC: C08B31/18 ,  C08B30/06 ,  A61L15/28 ,  B01J19/00 ,  B01D53/28

CPC classification number: C08B31/18 ,  A61L15/28 ,  A61L2400/04 ,  C08B30/06 ,  C08L1/28

Abstract: A method of preparing an oxidized starch haemostatic material, including adding a starch raw material to an external circulation pulsatile reactor; switching on a pump to allow inflow of dry air for drying the raw material; switching on a heat exchanger; vacuumizing the reactor; opening a nitrogen dioxide pipeline and a dry air pipeline; pumping in a mixed gas; controlling temperature at 0-120° C. by the heat exchanger; wherein nitrogen dioxide is contacted with the raw material to trigger a selective oxidation reaction and is continuously recycled; an airflow circulation switch is switched on and off at a pulsating ratio of 1:1-10 to carry out airflow pulsation; stopping inflow of nitrogen dioxide and continuing airflow circulation for 5-30 minutes; after completion of the reaction, adjusting to room temperature; vacuumizing the reactor and treating exhaust gas; allowing nitrogen gas to flow in for rinsing the replaced reactor until completion.