公开(公告)号：US10948467B2

公开(公告)日：2021-03-16

申请号：US16642531

申请日：2018-05-30

Applicant: EAST CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Daqi Gao ,  Xiaoqin Zhang ,  Zejian Wang ,  Liming Zhao

IPC: G01N33/00 ,  G01N27/64 ,  G06N3/08 ,  G01N1/24 ,  G01N27/403 ,  G06N3/04 ,  G01N27/12

Abstract: Provided is an online centralized monitoring and analysis system using an electronic nose instrument for multi-point malodorous gases, and the system includes an electronic nose instrument, which connects with multiple monitoring points through pipes. On-site malodorous gases in the maximum range of 2.5 km are drawn into the electronic nose instrument within 1 min by the external vacuum pump, and forced to flow through an annular working chamber of a gas sensor array for 30 s by the internal vacuum pump periodically. The modular convolution neural networks online learn the recent time-series responses of the gas sensor array and predict their coming responses, and the modular deep neural networks offline set up the relationship between the responses and multiple concentration items according to odor big data. The electronic nose instrument monitors up to 10 pollution sites cyclically and uses the cascade machine learning model to online predict one dimensionless odor-unit (OU) concentration index value and 10 specified-component concentration index values of malodorous gases.

公开(公告)号：US10308764B2

公开(公告)日：2019-06-04

申请号：US15542602

申请日：2015-07-13

Applicant: East China University of Science and Technology

Inventor： Liming Zhao ,  Jie Wei ,  Jun Qian ,  Juan Ma ,  Xiaofeng Tang ,  Yingyang Wu ,  Yongjun Qiu

IPC: C08G69/16 ,  C08G69/24 ,  C12P13/00

Abstract: The invention relates to a preparation method of green nylon poly butyrolactams, the biological materials of GABA in vacuum under the condition of high temperature melt decomposition and purified butyrolactams, then by vacuum polymerization of green nylon poly butyrolactams. Compared with the prior art, the invention is prepared by biological method for the synthesis of a wide range of sources, to solve the problem of raw material supply PA4 for mass production, reduce the cost of reaction, and the reaction condition is simple, easy to implement simplified synthesis steps, from the laboratory to the transformation of industrial production.