Characteristics and trends of hillside urbanization in China from 2007 to 2017

2022 ◽  
Vol 120 ◽  
pp. 102502
Author(s):  
Chao Yang ◽  
Wenhao Guo ◽  
Chenchen Zhang ◽  
Aihong Cui ◽  
Xuecao Li ◽  
...  
Keyword(s):  
Urbanization In China

Note on urbanization in China: Urban definitions and census data

2014 ◽  
Vol 30 ◽  
pp. 495-502 ◽  
Author(s):  
Bo Qin ◽  
Yu Zhang
Keyword(s):  
Census Data ◽  
Urbanization In China

scholarly journals Cancer prevention and control: alarming challenges in China

2016 ◽  
Vol 3 (1) ◽  
pp. 117-127 ◽  
Author(s):  
Ann M. Bode ◽  
Zigang Dong ◽  
Hongyang Wang
Keyword(s):  
The United States ◽  
Breast Cancers ◽  
Excessive Alcohol Consumption ◽  
Middle Income ◽  
Heavy Smoking ◽  
Treatment And Prevention ◽  
Incidence And Mortality ◽  
The Usa ◽  
Urbanization In China ◽  
Population Mortality

Abstract China is geographically the third largest country in the world and the most populated low-to-middle-income country. Cancer incidence and mortality rates for some cancers in the USA and European countries have steadily decreased over the last decades, whereas the incidence and mortality of certain cancers in China have been increasing at an alarming speed. Rapid industrialization and urbanization in China have been accompanied by incredible changes in lifestyle and environment combined with an aging population. Mortality caused by lung, colorectal and breast cancers has been steadily increasing, whereas cancer mortality from gastric, esophageal and cervical tumors has tended to decrease. Similar to what has occurred in the United States, unhealthy lifestyles in China, including heavy smoking and poor diet combined with pollution, have contributed to increased cancer risk. China is facing many challenges in cancer treatment and prevention for the general population. The major areas that need to be addressed in the control of cancer in China include cancers associated with environmental pollution, tobacco use, occupational carcinogens, infection, excessive alcohol consumption, dietary deficiencies and obesity. In this perspective, we review the problems in each area and suggest ideas for future directions in cancer research and strategies and actions to reduce the incidence of cancer in China.

Effectiveness Analysis of City Expansion in the Southeast of Changchun City to Economic Development Based on DEA

2014 ◽  
Vol 1073-1076 ◽  
pp. 1348-1351
Author(s):  
Dan Song ◽  
Qi Gang Jiang
Keyword(s):  
Decision Making ◽  
Economic Development ◽  
Urban Expansion ◽  
Rapid Urbanization ◽  
Evaluation Result ◽  
Effectiveness Analysis ◽  
Decision Making Unit ◽  
Changchun City ◽  
Dea Method ◽  
Urbanization In China

Under the background of rapid urbanization in China, this paper takes the southeast of Changchun city as an example, and uses 2008 to 2012 as decision making unit with DEA. Then it comes to the relevant conclusion of the effectiveness of urban expansion in Changchun city to the economic development:(1) the southeast of Changchun city may still have the space to continue expanding;(2) whether urban expansion in the future still brings more benefits to Changchun economic development or not, which mainly depends on the evaluation result after 2012;(3) DEA method has the feasibility and effectiveness in this respect, and such studies can be assumed to be one of the reference of determining city scale.

scholarly journals Numerical Analysis of the Characteristics of Gas Explosion Process in Natural Gas Compartment of Utility Tunnel Using FLACS

2019 ◽  
Vol 12 (1) ◽  
pp. 153 ◽  
Author(s):  
Zexu Li ◽  
Jiansong Wu ◽  
Mingyu Liu ◽  
Yuntao Li ◽  
Qiuju Ma
Keyword(s):  
Natural Gas ◽  
Gas Explosion ◽  
Rapid Urbanization ◽  
Flame Acceleration ◽  
Natural Gas Pipelines ◽  
Natural Gas Pipeline ◽  
Urban Safety ◽  
Fire And Explosion ◽  
Utility Tunnel ◽  
Urbanization In China

With the rapid urbanization in China, directly buried municipal pipelines have been gradually replaced by urban utility tunnels due to a serious shortage of urban underground spaces and weak disaster prevention of traditional municipal pipelines. The urban utility tunnels normally contain electricity pipelines, natural gas pipelines, heat pipelines, sewer pipelines, etc. If a natural gas pipeline leaks, a fire and explosion might occur and lead to serious consequences. In this study, the characteristics of gas explosion in a natural gas compartment of urban utility tunnel are investigated based on FLACS (Flame Acceleration Simulator) simulations. The results revealed that the flame profile undergoes two unstable flame stages. When the ignition position is set at the middle area (100.25, 1.2, 1.4 m) of the 200 m-long natural gas compartment, the maximum overpressure of the gas explosion in the 200 m-long natural gas compartment is 25.17 bar, which is the largest maximum overpressure under all gas explosion simulation setups. It is also found that the length of the natural gas compartment and different ignition positions have slight effects on the maximum overpressure. This study could provide technical support for structural strength design and division of the fireproofing area of the natural gas compartment in the utility tunnel, which is of great significance to improve urban safety during sustainable development.

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