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Your search keyword '"Manzhou Li"' showing total 3 results
Start Over Author "Manzhou Li" Topic chemistry
3 results on '"Manzhou Li"'

1. An Accelerated Method for Protecting Data Privacy in Financial Scenarios Based on Linear Operation

Author

Huairong Huo, Jiangyi Guo, Xinze Yang, Xinai Lu, Xiaotong Wu, Zongrui Li, Manzhou Li, and Jinzheng Ren

Subjects
privacy protection, cloud computing, financial scenarios, linear operation, encryption and decryption, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999
Abstract

With the support of cloud computing technology, it is easier for financial institutions to obtain more key information about the whole industry chain. However, the massive use of financial data has many potential risks. In order to better cope with this dilemma and better protect the financial privacy of users, we propose a privacy protection model based on cloud computing. The model provides four levels of privacy protection according to the actual needs of users. At the highest level of protection, the server could not access any information about the user and the raw data, nor could it recover the computational characteristics of the data. In addition, due to the universality of the mathematical principle of linear operators, the model could effectively protect and accelerate all models based on linear operations. The final results showed that the method can increase the speed by 10 times, compared with the privacy protection method that only uses local computing power instead of the cloud server. It can also effectively prevent the user’s privacy from being leaked with relatively minimal delay cost, compared with no privacy protection method. Finally, we design a multi-user scheduling model to deploy the model in a real scenario, which could maximise server power and protect user privacy as well.

Published
2023
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2. Spatial analysis, source identification and risk assessment of heavy metals in a coal mining area in Henan, Central China

Author

Wen Tian, Kuangjia Li, Yansheng Gu, Manzhou Li, Zijian Lun, Lin Zhao, and Junjie Ding

Subjects
Pollution, Environmental remediation, media_common.quotation_subject, 0211 other engineering and technologies, chemistry.chemical_element, 02 engineering and technology, Zinc, 010501 environmental sciences, 01 natural sciences, Microbiology, Biomaterials, Waste Management and Disposal, 0105 earth and related environmental sciences, media_common, 021110 strategic, defence & security studies, Cadmium, Waste management, business.industry, Coal mining, Contamination, chemistry, Environmental chemistry, Soil water, Environmental science, Gangue, business
Abstract

The purpose of this study is to investigate the heavy metal (HM) concentration of the gangue and HM pollution of the soil in a coal mining area. On the basis of determination of the concentrations of cadmium (Cd), lead (Pb), copper (Cu), zinc (Zn) and chromium (Cr) in the samples from the gangue and surface soils, the spatial distribution of toxic metals, contamination sources, potential ecological risks, potential health risks were studied. The content of Cd, Pb, Cu and Zn in the surface soils exceeded China National Standard (CNS, GB15618-1995). The spatial distributions of Cd, Pb, Cu and Zn are similar, exhibiting a declining trend from the gangue dump to the surrounding farmland. Results of Pearson correlation matrix and principal component analysis indicate that the origin of Cd, Pb, Cu and Zn elements is the gangue dump. The potential ecological risk index ranges from 97.2 to 619.5, and its spatial distribution is similar to those of Cd, Pb, Cu and Zn. Our results indicate that the HMs exceeded the corresponding CNS and posed noticeable ecological risks, which suggest that monitor and remediation measures should be taken in order to protect the health of the residents and the safety of the crops.

Published
2018

3. Screening for Autochthonous Phytoextractors in a Heavy Metal Contaminated Coal Mining Area

Author

Yansheng Gu, Manzhou Li, Kuangjia Li, Zijian Lun, Lin Zhao, and Qilong Zhu

Subjects
Crops, Agricultural, 0106 biological sciences, Pollution, China, adaptability factor, Health, Toxicology and Mutagenesis, media_common.quotation_subject, lcsh:Medicine, chemistry.chemical_element, Bioconcentration, native phytoextractor, phytoremediation, Zinc, 010501 environmental sciences, Biology, 01 natural sciences, Article, Soil, Metals, Heavy, Soil Pollutants, 0105 earth and related environmental sciences, media_common, Cadmium, heavy metal contamination, lcsh:R, Public Health, Environmental and Occupational Health, Plant community, Plants, Contamination, Coal Mining, Phytoremediation, Biodegradation, Environmental, chemistry, Environmental chemistry, Soil water, gangue dump, 010606 plant biology & botany
Abstract

In order to protect public health and crops from soil heavy metal (HM) contamination at a coal mining area in Henan, central China, HM pollution investigation and screening of autochthonous HM phytoextractors were conducted. The concentrations of cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) in surface soils exceeded the corresponding local background values and the China National Standard (CNS). The maximum potential ecological risk (RI) was 627.30, indicating very high ecological risk. The monomial risk of Cd contributed the most to the RI, varying from 85.48% to 96.48%. The plant community structure in the study area was simple, and was composed of 24 families, 37 genera and 40 species. B. pilosa, A. roxburghiana, A. argyi, A. hispidus were found to be the most dominant species at considerable risk sites. Based on the comprehensive analysis of Cd concentration, bioconcentration factor, translocation factor and adaptability factor, B. pilosa and A. argyi had potential for phytoextraction at considerable risk sites. A. roxburghiana had potential for Cd phytoextraction at moderately risk sites and A. hispidus seemed suitable for phytostabilization. The results could contribute to the phytoremediation of the similar sites.

Published
2017
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