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遥感技术在农业资源与土壤环境综合监测上的应用

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山东农业科学 2024年第3期56卷 163-170页

作者：鄂高阳韩芳秦秉希刘之广山东农业大学资源与环境学院山东泰安271018 山东理工大学建筑工程与空间信息学院山东淄博255049 山东农业大学信息科学与工程学院山东泰安271018

近年来,遥感技术和遥感设备已被普遍应用于农业资源与土壤环境综合监测中,且在农业生产、环境保护和自然资源管理等几个方面成效卓著。但是,土壤问题依然影响着人类的生态文明建设,制约着人类健康和发展的稳定性。随着国内外对土壤问题... 详细信息

近年来,遥感技术和遥感设备已被普遍应用于农业资源与土壤环境综合监测中,且在农业生产、环境保护和自然资源管理等几个方面成效卓著。但是,土壤问题依然影响着人类的生态文明建设,制约着人类健康和发展的稳定性。随着国内外对土壤问题研究和调查的不断深入,针对性提出的一系列解决方案和政策措施在一定程度上改善了土壤环境问题,但也暴露出监测技术不足、监测方法亟待改进等很多新问题。本文综述了遥感监测技术在农业生产、环境保护和自然资源管理三个方面的应用现状,重点对遥感监测手段、遥感技术在土壤监测方面的应用进行了较全面的阐述,对现有工作中存在的问题进行总结,并对今后的发展方向做出展望。

关键词：遥感技术土壤综合监测农业生产环境保护自然资源管理

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教育哲学

教育哲学

PReSSeD CONCReTeS BASeD ON MODIf.eD LIMe-ASH BINDeRS

1981年

作者： George f. kneller 陈乃臣译

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PRESSED CONCRETES BASED ON MODIFIED LIME-ASH BINDERS

evolution of.heat transport pathways in the Indonesian Archipelago during last deglaciation

第三届北京国际水泥与混凝土学术会议

作者： Raisa f. Runova Marina A. kochevykh Civil engineering Institute Ukraine 252037. Kiev.Vozduhoflotsky pr.. 31

exhibited investigation results on the possibility of.attaining pressed concrete based on lime - f.y ash binder, modif.ed with sodium compounds. Demonstrated that, the utilization of.such hinder enables to increase the general content of.f.y ash-slag in the composition of.the moulding mixture to 50-70% with simultaneous decrease of.energy expenditure at the expense of.minimizing the heat treatment parameters of.the pressed structure. This is insured with the conditions of.the achieving a relatively strong. weather- and f.ost-resistance stone.

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Chinese Science Bulletin 2002年第22期47卷 1912-1917页

作者： f.Guichard f.Bassinot L.Labeyrie China University of.Geosciences (Beijing) Beijing China Laboratoire des Sciences du Climat et de l’environnement Domaine du CNRS Gif-sur-Yvette France

The Indonesian Archipelago provides important heat transport pathways of.the Western Pacif.c Warm Pool between the northern Indian Ocean and western equatorial Pacif.c Ocean, that exert important impacts on global climate change. This study investigated AMS 14C, δ18O, planktonic f.raminif.r assemblages and sedimentation rates in three piston cores collected in the Indonesian Archipelago. The results indicate that changes in the Indonesian Archipelago heat transport pathways were phase characteristic and in steps during the last deglaciation. In the deglaciation Termination IA, at about 12.5 kaBP, sea level rose rapidly in a short time period, and Makassar and Lombok straits widened suddenly f.r warm and f.esh water f.om the Pacif.c to pour into the Java Sea and eastern Indian Ocean. During the Termination IB, about 9.5 kaBP, sea level rose rapidly again, and the South China Sea (SCS) started to connect with the Java Sea. With monsoon actions, a large amount of.f.esh water f.om the SCS shelf.area f.ew

关键词： Indonesian Archipelago last deglaciation heat transport pathways β18O planktonic f.raminif.r assemblages.

event-driven f.ood management:design and computational modules

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Geo-Spatial Inf.rmation Science 2016年第1期19卷 39-55页

作者： Vinod kumar Sharma G.Srinivasa Rao e.Amminedu P.V.Nagamani Abhinav Shukla k.Ram Mohan Rao V.Bhanumurthy National Remote Sensing Centre ISRO HyderabadHyderabadTelanganaIndia Department of.Geo-engineering Andhra UniversityVisakhapatnamAndhra PradeshIndia

f.ood management is a set of.activities that have to be carried out in collaboration with multiple *** f.ood inf.rmation with early warning generated using remote sensing satellite technologies can help the agencies to ef.ectively manage the situation on *** environmental parameters and f.recasts provided by dif.erent agencies can be analyzed and compared with historical f.ood events f.r generating probable f.ood event *** inf.rmation(environmental parameters)provided by the agencies are heterogeneous and noncompliant to standards and distributed in *** of.data f.om distributed resources and automation of.data analysis process f.r f.ood management is a primary prerequisite f.r f.ster and ef.icient *** 2.0-based web services enable data creation,sharing,communication,and collaboration on *** data sharing on web 2.0 f.r making quality of.service using open-source sof.ware f.r ef.icient f.ood management is a *** sof.ware architectures proposed f.r risk and environmental crisis management are too generic in nature and needs lot of.modif.cation f.r f.ood *** event-driven model coupled with data standardization procedures using service-oriented architecture provides an ef.ective f.amework f.r f.ood *** this paper,a f.amework capable of.collecting heterogeneous distributed f.ood-related inf.rmation f.r analyzing and alerting probable f.ood events is *** f.amework has been implemented to generate automatic f.ood extent maps,by analyzing the distributed satellite data(as service).The automation of.f.ood delineation process reduces the overall f.ood product generation ***-source web tools have been utilized in development of.spatial inf.rmation system to visualize and analyze the actual situation on ground f.cilitating overall decision-making process.

关键词： f.ood management sof.ware architectures service oriented architecture(SOA) event-based methods automation heterogeneous data

Hemodynamic ef.ects of.propranolol with spironolactone in patients with variceal bleeds: A randomized controlled trial

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World Journal of.Gastroenterology 2008年第12期14卷 1908-1913页

作者： Binay k De Deep Dutta Rimi Som Pranab k Biswas Subrata k Pal Anirban Biswas Department of.Medicine Medical College Calcutta 88 College Street Calcutta 700073 and Institute of Cardiovascular Sciences RG Kar Medical College Calcutta 32 Gorachand Road Kolkata 700014 India

AIM: To study the hemodynamic ef.ects of.spironolactone with propranolol vs propranolol alone in the secondary prophylaxis of.variceal bleeding. MeTHODS: Thirty-f.ve cirrhotics with variceal bleeding randomly received propranolol (n = 17: Group A) or spironolactone plus propranolol (n = 18: Group B). Hemodynamic assessment was perf.rmed at baseline and on the eighth day. ReSULTS: Spironolactone with propranolol caused a greater reduction in the hepatic venous pressure gradient than propranolol alone (26.94% vs 10.2%; P f.urteen out of.eighteen patients on the combination treatment had a reduction in hepatic venous pressure gradient to ≤ 12 mmHg or a 20% reduction f.om baseline in contrast to only six out of.seventeen (6/17) on propranolol alone (P e with propranolol results in a better response with a greater reduction in hepatic venous pressure gradient in the secondary prophylaxis of.variceal bleeding. A greater number of.patients may be protected by this combination therapy than by propranolol alone. Hence, this combination may be recommended f.r secondary prophylaxis in patients with variceal bleeding.

关键词： Hepatic venous pressure gradient Secondary prophylaxis Spironolactone Propranolol Varicealbleeding

Remote Sensing of.Aquatic Coastal ecosystem Processes 2006

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f.asibility of.new ladle-treated Hadf.eld steel f.r mining purposes

丛书名： Remote Sensing and Digital Image Processing

2006年

作者： Laurie L. Richardson ellsworth f. LeDrew

来源：畅想之星图书光盘版（南... 评论

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International Journal of.Minerals,Metallurgy and Materials 2018年第3期25卷 300-309页

作者： M.k. el f.wkhry Central Metallurgical Research and Development Institute (CMRDI) Box 87 Helwan Egypt

A debate has arisen over the possibility of.using a new ladle-treated Hadf.eld steel instead of.conventional heat-treated Hadf.eld steel in mining applications. This debate might be solved by identif.ing the dif.erences between the mechanical properties and strain-hardening properties of.conventional heat-treated Hadf.eld steel and its counterpart ladle-treated Hadf.eld steel. Tensile and compression tests demonstrated that the ductility of.ladle-treated Hadf.eld steel is similar to that of.conventional heat-treated steel. However, the strain-hardening property of.the ladle-treated Hadf.eld steel is almost two times higher than that of.the heat-treated Hadf.eld steel. The results of.this study demonstrate that the improvement of.the strain-hardening behavior is attributable to the low stacking-f.ult energy of.the main austenite matrix, which results f.om the high segregation coef.icient of.carbon and manganese solutes of.the main austenite matrix into the new eutectic phase. Superior wear abrasion resistance is a potential consequence of.dif.erent strain-hardening properties under low and high loads.

关键词： Hadf.eld steel ladle treatment process wear abrasion resistance strain hardening properties mechanical properties

A new cache of.eoarchaean detrital zircons f.om the Singhbhum craton,eastern India and constraints on early earth geodynamics

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Geoscience f.ontiers 2019年第4期10卷 1359-1370页

作者： Bulusu Sreenivas Sukanta Dey Y.J. Bhaskar Rao T. Vijaya kumar e.V.S.S.k. Babu Ian S. Williams CSIR-National Geophysical Research Institute Hyderabad 500007India Department of.earth Sciences Indian Institute of Science Education and ResearchKolkata 741246India Research School of.earth Sciences The Australian National UniversityCanberra 2601Australia

The dominant geodynamic processes that underpin the f.rmation and evolution of.earth’s early crust remain enigmatic calling f.r new inf.rmation f.om less studied ancient cratonic ***,we present U-Pb ages and Hf.isotopic compositions of.detrital zircon grains f.om^2.9 Ga old quartzites and magmatic zircon f.om a 3.505 Ga old dacite f.om the Iron Ore Group of.the Singhbhum craton,eastern *** detrital zircon grains range in age between 3.95 Ga and 2.91 *** with the recently reported Hadean,eoarchean xenocrystic(up to 4.24 Ga)and modem detritus zircon grains f.om the Singhbhum craton,our results suggest that the eoarchean detrital zircons represent crust generated by recycling of.Hadean f.lsic crust f.rmed at^4.3-4.2 Ga and^3.95 *** observe a prominent shif. in Hf.isotope compositions at^3.6-3.5 Ga towards super-chondritic values,which signif. an increased role f.r depleted mantle and the relevance of.plate *** Paleo-,Mesoarchean zircon Hf.isotopic record in the craton indicates crust generation involving the role of.both depleted and enriched mantle *** inf.r a short-lived suprasubduction setting around^3.6-3.5 Ga f.llowed by mantle plume activity during the Paleo-,Mesoarchean crust f.rmation in the Singhbhum *** Singhbhum craton provides an additional repository f.r earth’s oldest materials.

关键词： U-Pb zircon ages Hf isotopes Singhbhum craton Hadean eoarchean Geodynamics