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Exploring the combination of biochar‐amended soil and automated irrigation technology for water regulation and preservation in green infrastructure

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Deep underground Science and Engineering 2024年第1期3卷 39-52页

作者： Honghu Zhu Yuanxu Huang Haihong Song Jian Chen Songlei Han Tanwee Mazumder Ankit Garg School of Earth Sciences and Engineering Nanjing UniversityNanjingChina Department of Civil and Smart Engineering Construction Guangdong Engineering Center for Structure Safety and Health MonitoringShantou UniversityShantouChina Shanghai Municipal Engineering Design Co. LtdShanghaiChina Indian Institute of Technology Madras ChennaiIndia

Biochar is a carbon sink material with the potential to improve water retention in various soils.However,for the long‐term maintenance of green infrastructure,there is an additional need to regulate the water contents in the covers to maintain vegetation growth in semiarid conditions.In this study,biochar‐amended soil was combined with subsurface drip irrigation,and the water preservation characteristics of this treatment were investigated through a series of one‐dimensional soil column tests.To ascertain the best treatment method specific to semiarid climatic conditions,the test soil was amended with 0%,1%,3%,and 5%biochar.Automatic irrigation devices equipped with soil moisture sensors were used to control the subsurface water content with the aim of enhancing vegetation growth.Each soil column test lasted 150 h,during which the volumetric water contents and soil suction data were recorded.The experimental results reveal that the soil specimen amended with 3%biochar is the most water‐saving regardless of the time cost.Soil with a higher biochar content(e.g.,5%)consumes a more significant amount of water due to the enhancement of the water‐holding capacity.Based on the experimental results,it can be concluded that the appropriate ratio can be determined within 1%–3%,which can reduce not only the amount of irrigated/used water but also the time cost.Such technology can be explored for water content regulation in green infrastructure and the development of barriers for protecting the environment around deep underground waste containment.

关键词： biochar drip irrigation underground water preservation water regulation

植物激素信号网络提高植物对外界环境的适应性

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Science Bulletin 2024年第6期69卷 709-713页

作者：刘慧傅向东 New Cornerstone Science Laboratory Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China

In vascular plants,roots are important underground organs that anchor the plant in the ground and absorb water and many elemental nutrients from the soil.Root system architecture(RSA)plays critical roles in not only determining a plant’s ability to acquire soil resources but also improving plant survival under various dynamic environmental conditions.

关键词： conditions. underground Root

underground laboratory JUNA shedding light on stellar nucleosynthesis

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Nuclear Science and Techniques 2023年第3期34卷 106-108页

作者： Toshitaka Kajino School of Physics and International Research Center for Big-Bang Cosmology and Element GenesisBeihang UniversityBeijing 100083China Division of Science National Astronomical Observatory of JapanTokyo 181-8588Japan Graduate School of Science The University of TokyoTokyo 113-033Japan

Extremely low background experiments to measure key nuclear reaction cross sections of astrophysical interest are conducted at the world’s deepest underground laboratory,the Jingping underground laboratory for Nuclear Astrophysics(JUNA).High precision measurements provide reliable information to understand nucleosynthetic processes in celestial objects and resolve mysteries on the origin of atomic nuclei discovered in the first generations of Pop.III stars in the universe and meteoritic SiC grains in the solar system.

关键词： universe underground stellar

underground logistics systems:Development overview and new prospects in China

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Frontiers of Engineering Management 2023年第2期10卷 354-359页

作者： Wanjie HU Jianjun DONG Rui REN Zhilong CHEN Faculty of Architecture Civil and Transportation EngineeringBeijing University of TechnologyBeijing 100124China School of Science Nanjing University of Science and TechnologyNanjing 210094China College of Defense Engineering Army Engineering University of PLANanjing 210007China

1 Introduction underground logistics systems(ULSs)are a set of self-contained,multimodal,and intelligent physical distribution concepts that enable the automated movement of goods via tunnels and underground pipelines installed within and between cities(Visser,2018).ULSs are also recognized as the fifth type of logistics and generic supply system after seaways,airlines,roads,and railways(Qian and Guo,2007).

关键词： underground enable logistics

Deep underground Energy Storage:Aiming for Carbon Neutrality and Its Challenges

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Engineering 2023年第10期29卷 11-14页

作者： Chunhe Yang Tongtao Wang State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China

1.Definition of deep underground energy storage Deep underground energy storage(DUES)is an important strategic practice for ensuring China’s energy supply,its national defense,and the realization of China’s strategic goals of achieving a carbon peak and carbon neutrality(CPCN).In 2021,China’s oil and natural gas consumption reached 712 million tonnes and 372.6 billion cubic meters,respectively,while its external dependence reached about 72%and 45%.China’s reserves only met about 30%of the requirements for a safe supply and peak shaving.

关键词： underground realization strategic

Editorial for Advances and applications of deep learning and soft computing in geotechnical underground engineering

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第3期14卷 671-673页

作者： Wengang Zhang Kok-Kwang Phoon School of Civil Engineering Chongqing UniversityChina Key Laboratory of New Technology for Construction of Cities in Mountain Area Chongqing UniversityChina National University of Singapore Singapore Singapore University of Technology and Design SingaporeSingapore

We are privileged to be invited by the Honorary Editor-in-Chief,Professor Qihu Qian,Editor-in-Chief,Professor Xia-Ting Feng,and the editorial staff of the Journal of Rock Mechanics and Geotechnical Engineering(JRMGE),to serve as Guest Editors for this Special Issue(SI).The purpose of this SI is to review the latest development of machine learning(ML)techniques including the soft computing(SC)and deep learning(DL)methods as well as their key applications in geotechnical underground engineering problems.

关键词： computing learning underground

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Career Climax

China Weekly 2024年第1期 46-49页

作者： Li Jing 不详

Renowned as a pioneer of sexology,Pan Suiming talks with NewsChina about his extensive academic career,his research on China's underground sex industry and the evolving attitudes toward sexuality.

关键词： owned underground pioneer

Exploration and Utilization Scheme of Jiangxi Xikeng Lithium Ore Was Examined and Approved

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China Nonferrous Metals Monthly 2024年第1期 5-6页

In early October,an announcement was given on official website of Ministry of Natural Resources:exploration and utilization scheme of Xikeng lithium ore in Yifeng County of Jiangxi Province was examined and approved,and the news was finally announced.According to the announcement,design opencast mining scale of the ore is 3000000 tons/year,underground mining scale of the ore is 600000 tons/year,and mine life is 39years(including 1 year of infrastructure construction).

关键词： mining underground Jiangxi

underground void filling by cemented mill tailings

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International Journal of Mining Science and Technology 2013年第6期23卷 893-900页

作者： Choudhary Bhanwar Singh Kumar Santosh Department of Mining Indian School of Mines

underground mining always create voids.These voids can cause subsidence of surface.So it is always a demand to fill the void in such a manner that the effect of underground mining can be minimized.Void filling using mill tailings especially in metal mining is one of the best techniques.The tailings produced in milling process have traditionally been disposed in tailing ponds creating a waste disposal and environmental problems in terms of land degradation,air and water pollution,etc.This disposal practice is more acute in the metal milling industry where the fine grinding,required for value liberation,results in the production of very fine tailings in large percentage.This paper includes discussions on the effectiveness of different paste mixes with varying cement contents in paste backfilling operations.The results revealed that material composition and use of super plasticizer strongly influenced the strength of cemented backfill.

关键词： underground Cemented mill tailings Backfilling Metal mining Super plasticizer