Search

Your search keyword '"Liansheng Zhou"' showing total 15 results
Start Over Author "Liansheng Zhou"
15 results on '"Liansheng Zhou"'

1. Antibiotic use in township hospitals during the COVID-19 pandemic in Shandong, China

Author

Ting Wang, Liyan Shen, Jia Yin, Liansheng Zhou, and Qiang Sun

Subjects
Antibiotic consumption, COVID-19, Primary healthcare settings, China, Infectious and parasitic diseases, RC109-216
Abstract

Abstract Background The overuse of antibiotics in primary healthcare settings (PHSs) has caused a serious public health problem in China. The outbreak of the Coronavirus Disease-19 (COVID-19) pandemic brought about dramatic changes in the supply of and demand for medical services in PHSs, possibly resulting in unprecedented changes in antibiotic use. Objective This study aims to assess the immediate and long-term impacts of the COVID-19 pandemic on the changes in antibiotic consumption in PHSs. Method The data on antibiotic consumption were collected from selected township hospitals in Shandong, China from January 2019 to December 2021. Antibiotic consumption was quantified by using the defined daily doses (DDDs) and the WHO Access, Watch, Reserve category. A segmented regression model was established to analyze the immediate and long-term impacts of the COVID-19 pandemic on antibiotic use by using the interrupted time series analysis. Results The overall antibiotic consumption in all PHSs decreased by 32.04% and 16.69% in 2020 and 2021 respectively compared to the corresponding period in 2019. Over the entire study period, the use of penicillins (J01C) and cephalosporins (J01D) accounted for more than 50% of the total antibiotic consumption. The average annual consumption of Watch category antibiotics decreased by 42.02% and 33.47% in 2020 and 2021 respectively compared to that in 2019. According to the interrupted time series analysis, the total antibiotic consumption decreased significantly immediately after the COVID-19 pandemic outbreak (coef. = − 2.712, p = 0.045), but it then increased significantly over a long-term (coef. = 0.205, p = 0.005). Additionally, the consumption of Access category antibiotics increased significantly in PHSs in the long-term (coef. = 0.136, p = 0.018). However, the consumption of Watch category antibiotics declined sharply immediately after the pandemic (coef. = − 1.222, p

Published
2022
Full Text
View/download PDF

2. Assessment of the potential of photovoltaic power resources on all continents

Author

Li Qionghui, Guohui Xie, Liansheng Zhou, Zhiyong Gan, and Nana Li

Subjects
History, business.industry, Photovoltaic system, Electrical engineering, Environmental science, business, Computer Science Applications, Education, Power (physics)
Abstract

Evaluating the development potential of large-scale PV power base is of great value in supporting the construction of Global Energy Interconnection (GEI) and meeting global electricity needs by supplying clean energy. This paper analysed the characteristics of global solar resources and summarized the current status of global key large-scale PV power base. The analysis model of development potential, annual theory generation and full load hours was established based on the facts of capacity per square meter, global horizontal irradiation and geographical conditions. The development potential of large-scale PV power base of all continents was studied by applying the evaluating system of global PV power base. The results showed that the solar power development bases in Asia are mainly concentrated in western China, Israel, Jordan, Saudi Arabia, and the United Arab Emirates in the Middle East.

Published
2020

3. Feasibility Analysis of New Energy Development under the Asian-African-European Grid Interconnection Mode

Author

Guohui Xie, Zhiyong Gan, Nana Li, and Liansheng Zhou

Subjects
Interconnection, Development (topology), business.industry, Electrical engineering, New energy, Mode (statistics), business, Grid
Abstract

The power area of Asia-Africa-European power transmission is rich in new energy resources such as wind resources and solar resources. West Asia and Africa have the potential to build large-scale renewable energy power generation bases. Based on the basic idea of Levelized Energy Cost Analysis (LCOE), this paper proposes an improved feasibility analysis model of new energy power generation technology, comprehensively considering the impact of policies, technology, politics and other factors on the cost of power generation. Feasibility of power transmission from large renewable energy bases in West Asia and Africa to Europe are measured under interregional grid interconnection. The results show that: the wind and solar power generation bases in West Asia and Africa are feasible of transferring electricity to Europe, and solar intercontinental interconnected transmission is more feasible than wind power.

Published
2020

4. Feasibility study of GIS vibration testing and diagnosis method

Author

Wang Kun, Qu Bin, Ziyue Wang, Wang Jian, Wang Yongning, Haowei Chen, and Liansheng Zhou

Subjects
Vibration, Computer science, Automotive engineering
Abstract

In this paper, the feasibility of the fault diagnosis method based on the vibration signal in GIS is studied through the experiments of the correlation between the discharge fault and the vibration signal and the propagation characteristics of the vibration signal in GIS. The concept of pulse interval frequency is put forward. According to the experimental data, it is concluded that there is a strong correlation between the interval frequency of GIS discharge pulse and the frequency of vibration signal. At the same time, the vibration signal has regular propagation characteristics when passing through the basin insulator, cavity and T-shaped structure. The above two points strongly support the vibration test method can be used for fault diagnosis of GIS.

Published
2020

5. Research and Analysis Based on Electricity Spot Market Construction in Northern China

Author

Zhao Yue, Liansheng Zhou, Zhao Shuai, Yigang Zhou, Changzhi Zhang, Ai Dengxin, Gan Zhiyong, and Wang Sen

Subjects
lcsh:GE1-350, GeneralLiterature_INTRODUCTORYANDSURVEY, Electricity spot market, Business, China, lcsh:Environmental sciences, Agricultural economics
Abstract

Successive development of China’s power spot market has subjected the operation and dispatching mode of the existing power system to an increasingly greater influence imposed by the electricity market mechanism. In China’s northern provinces requiring winter heating, it is a huge challenge to the trading mechanism of power spot market to simultaneously guarantee the safe operation of power system and the heating mode of heating unit. To address this issue, this paper analyses the operation conditions and problems of power spot market during winter heating in northern China. Based on the analysis of the power spot market in a northern city, This paper analyzes some crucial problems in the construction of spot market and sums up policy advice for the further construction of spot market adapted to direct electricity purchase by large consumers in northern China.

Published
2020

7. Increasing litter size in a sheep breed by marker-assisted selection of BMPR1B A746G mutation

Author

Xingbo Zhao, Liansheng Zhou, Sun Hongxin, Weitao Dun, Shujun Tian, Chen Xiaoyong, and Hai Xiang

Subjects
Litter (animal), Genetic Markers, Agricultural development, Litter Size, business.industry, Biology, Marker-assisted selection, Breeding, Biotechnology, Beijing, Gene Frequency, Agriculture, Genetics, Animals, Point Mutation, Selection, Genetic, China, Socioeconomics, business, Sheep breed, Bone Morphogenetic Protein Receptors, Type I, Genetic Association Studies, Sheep, Domestic
Abstract

1College of Animal Science and Technology, China Agricultural University, Beijing 100193, People’s Republic of China 2Institute of Animal Science and Veterinary of Hebei Province, Baoding 071000, People’s Republic of China 3College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071000, People’s Republic of China 4Hebei Liansheng Agricultural Development Company Limited, Baoding 072750, People’s Republic of China

Published
2015

8. Increasing litter size in a sheep breed by marker-assisted selection of BMPR1B A746G mutation.

Author

XIAOYONG CHEN, HONGXIN SUN, SHUJUN TIAN, HAI XIANG, LIANSHENG ZHOU, WEITAO DUN, and XINGBO ZHAO

Subjects
BONE morphogenetic protein receptors, ANIMAL litters, GENETIC mutation, SHEEP crossbreeding, ALLELES
Abstract

The article presents a study related to on increasing litter size in a sheep breed by marker-assisted selection of bone morphogenetic protein receptor-1B (BMPR1B) A746G mutation. The findings include B allele capable of being introduced into offspring by crossbreeds using Han sheep as maternal parent, and in promoting litter size, increase in B allele frequency in hybrid sheep with the promotion of Han sheep bloodline, and no significant difference between close-breed sheep and backcross (BC).

Published
2015
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results