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Water Saving Irrigation for Rice and Its Effect on Environment
Mao Zhi
Strategic Study of CAE 2002, Volume 4, Issue 7, Pages 8-16
Rice is one of the most important food crops contributing about 40% of the total food grain production in China. Out of about 110 million hectares of area sown food crops, 28% is covered by rice. Since 1980s, the shortage of water resources has become an important problem for agricultural production in rice planing areas and many water saving regimes for rice have been tested, advanced, applied and spread in different regions of China. In this paper, based on the results of experiment and the experience of spread of these new irrigation regimes, the following four main kinds of water saving irrigation regimes in China have been classified viz. (1) combining shallow water depth with “wetting” and “dry” (SWD), (2) alternate wetting and drying (AWD) ,(3) semi-dry cultivation (SDC) and (4) rainwater storage (RS). The standards of field water control and potential of saving water, increasing rice yield and water productivity of these regimes are introduced and explained. The selection and attention points of application for the four regimes are presented and the causes of sustainable saving water and increase in water productivity and the environmental impacts by adopting these regimes are analyzed and discussed.
Keywords: rice water saving irrigation irrigation regime potential of water-saving enviromental impact
Game theoretic analysis of environmental impact assessment system in China
CHENG Hongguang, PU Xiao, GONG Li, QI Ye
Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4, Pages 448-453 doi: 10.1007/s11783-007-0071-8
Keywords: public impact assessment Environmental impact general
Frontiers of Medicine 2023, Volume 17, Issue 3, Pages 527-533 doi: 10.1007/s11684-022-0967-5
Keywords: orthotopic heart transplant tricuspid regurgitation clinical impact biatrial heart transplantation
Bian Yousheng
Strategic Study of CAE 2003, Volume 5, Issue 7, Pages 1-10
The urban environmental security becomes a new hot spot of environmental problems at present. The environmental security is raised in correspondance with the environmental calamity. This article puts forwad urban environmental security and the preparatory scheme for heavy environmental disaster rescue for Beijing based on analysis of some insecurity environmental factors of Beijing. The research contents include: The Beijing urban environmental security; The environmental disaster comprehensive zoning in Beijing; The information system supporting the management and decision about environmental disaster;The rescue and prevention scheme of urban meterological disaster;The forest fire prevention of Beijing by GIS technology;The cause and prevention strategy of dust storm;The health security and epidemic prevention in Beijing;The study of earthquake disaster prevention; Transform, perfection and construction of urban lifeline system engineering; The rescue scheme for serious environmental disaster; The effect of environmental disaster on urban economic development in Beijing.
Keywords: environmental security environmental disaster emergency help programme
Dynamical analysis of droplet impact spreading on solid substrate
Zhaomiao LIU, Huamin LIU, Xin LIU,
Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3, Pages 308-315 doi: 10.1007/s11465-010-0020-2
Keywords: droplet impact spreading numerical simulation
Comparison of droplet distributions from fluidic and impact sprinklers
Xingye ZHU,Shouqi YUAN,Junping LIU,Xingfa LIU
Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 1, Pages 53-59 doi: 10.15302/J-FASE-2015049
Keywords: outside signal sprinkler fluidic sprinkler impact sprinkler sprinkler irrigation droplet size droplet
Mechanical properties and impact resistance of concrete composites with hybrid steel fibers
Fatih ÖZALP; Halit Dilşad YILMAZ; Burcu AKCAY
Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5, Pages 615-623 doi: 10.1007/s11709-022-0828-y
Keywords: projectile impact depth of penetration fracture energy crater diameter UHPFRC
Hazard potential of zones of weakness in gravity dams under impact loading conditions
Herbert LINSBAUER
Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1, Pages 90-97 doi: 10.1007/s11709-010-0008-3
Keywords: dam-reservoir earthquake impact cracking fracture mechanics
Ying YAN, Pengfei LI, Shunying JI
Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1, Pages 50-54 doi: 10.1007/s11709-013-0186-x
Keywords: granular matter impact peak buffer capacity discrete element method critical thickness
Water film coated composite liquid metal marble and its fluidic impact dynamics phenomenon
Yujie DING,Jing LIU
Frontiers in Energy 2016, Volume 10, Issue 1, Pages 29-36 doi: 10.1007/s11708-015-0388-0
Keywords: liquid metal marble metallic droplet composite fluid impact dynamics multiphase fluid mechanics
Dynamic characteristics of a shrouded blade with impact and friction
Xumin GUO, Jin ZENG, Hui MA, Chenguang ZHAO, Lin QU, Bangchun WEN
Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2, Pages 209-226 doi: 10.1007/s11465-019-0566-6
Keywords: twisted shrouded blade dynamic analysis impact friction separate–stick–slip motion
RESEARCH PROGRESS ON THE IMPACT OF NITROGEN DEPOSITION ON GLOBAL GRASSLANDS
Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3, Pages 425-444 doi: 10.15302/J-FASE-2022457
● Grasslands in many regions of the world have been impacted by atmospheric nitrogen deposition.
Keywords: Acidification biomass production critical load eutrophication species composition species richness
Corporate governance impact on banking risk
Mahdi JEMMALI, Bassem SALHI
Frontiers of Engineering Management 2020, Volume 7, Issue 2, Pages 182-195 doi: 10.1007/s42524-019-0034-3
Keywords: bank governance banking risk process decision modeling architecture
Parameter studies on impact in a lap joint
Amir M. RAHMANI,Elizabeth K. ERVIN
Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1, Pages 64-77 doi: 10.1007/s11465-014-0322-x
To represent a loose lap joint, a beam impacting four springs with gaps is modeled. Modal analysis with base excitation is solved, and time histories of contact points are closely monitored. Using the impulse during steady state response, six influential parameters are studied: damping ratio, contact stiffness, intermediate contact position, gap, excitation amplitude and beam height. For all parameters, the system response is highly controlled by modes with two contacting springs. Each parameter’s effect on system response is presented including unstable regions, unique trend behaviours result. Recommendations for structural designers are also noted.
Keywords: impact mechanics contact joint behaviour modal analysis parameter study
Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0701-7
Keywords: magnesium/aluminum assembled wheel riveting residual stress fatigue analysis impact analysis multi-objective
Title Author Date Type Operation
Game theoretic analysis of environmental impact assessment system in China
CHENG Hongguang, PU Xiao, GONG Li, QI Ye
Journal Article
The clinical impact of tricuspid regurgitation in patients with a biatrial orthotopic heart transplant
Journal Article
The Study on Urban Environmental Security and Emergency Help Programme for Serious Enviromental Disaster
Bian Yousheng
Journal Article
Dynamical analysis of droplet impact spreading on solid substrate
Zhaomiao LIU, Huamin LIU, Xin LIU,
Journal Article
Comparison of droplet distributions from fluidic and impact sprinklers
Xingye ZHU,Shouqi YUAN,Junping LIU,Xingfa LIU
Journal Article
Mechanical properties and impact resistance of concrete composites with hybrid steel fibers
Fatih ÖZALP; Halit Dilşad YILMAZ; Burcu AKCAY
Journal Article
Hazard potential of zones of weakness in gravity dams under impact loading conditions
Herbert LINSBAUER
Journal Article
Buffer capacity of granular matter to impact of spherical projectile based on discrete element method
Ying YAN, Pengfei LI, Shunying JI
Journal Article
Water film coated composite liquid metal marble and its fluidic impact dynamics phenomenon
Yujie DING,Jing LIU
Journal Article
Dynamic characteristics of a shrouded blade with impact and friction
Xumin GUO, Jin ZENG, Hui MA, Chenguang ZHAO, Lin QU, Bangchun WEN
Journal Article