Results 101 to 110 of about 7,123,984 (286)

Research on Safety Risk Evaluation System for Seepage in Ship Lock Foundation Pit Engineering

Buildings
Ship lock project currently demonstrates a distinct cyclical pattern, accumulating latent hazards that pose a significant threat to project safety. Seepage safety (the condition in which the seepage risk is reduced to an acceptable level) serves as a ...
Jianhong Huang, Jian Xie, Honglei Ren
doaj   +1 more source

Towards Water, Food and Energy Security: The Global Challenges and Possible Solutions for a Holistic Vision of Sustainability

Irrigation and Drainage, EarlyView.
ABSTRACT This invited paper gives an overview of the challenges the world is facing and offers a possible solution for water and food security within the holistic integrated concept of the water–energy–food (WEF) nexus. The paper summarizes the experience the author gained through working on various research projects at national and international ...
Ragab Ragab
wiley   +1 more source

Complex variable method for the ground surface settlement of twin parallel shield tunnels under the influence of seepage

Results in Engineering
To investigate the ground surface settlement law of twin parallel shield tunnels under the action of groundwater seepage, in this study, twin equal circular tunnels were investigated, and groundwater seepage in the surrounding rock was assumed to follow ...
Zeliang Li, Chao Wang, Xiaohua Bao, Jinfeng Zou, Xingxing Wei   +4 more
doaj   +1 more source

Seepage losses in the Coleambally Irrigation Area – loss estimates from channel automation data

, 2016
Seepage from open channels is a major source of water loss across all irrigation districts in Australia. Pondage tests are acknowledged as the best direct method for seepage measurement, and the recorded water-level data from automated systems during ...
Gillies, M., Moavenshahidi, A., Smith, R.   +2 more
core   +1 more source

Higher Energy Demands and Lower Body Condition in a Hot Spring: Comparing Relict Leopard Frogs at Two Thermally Contrasting Sites

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Following range‐wide decline, all remnant populations of the relict leopard frog (Rana onca) in the eastern Mojave Desert of the southwestern USA occupied geothermally influenced hot springs. In recent years, however, several large populations have been established at cold‐water sites.
Robert P. Pelletier, Michael D. Treat, Frank van Breukelen, Jef R. Jaeger   +3 more
wiley   +1 more source

The German Soil Systematics and the Rationale Behind Its Revision

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background The German Soil Systematics is a pedogenetic classification based on the morphological expressions of pedogenic processes and has been developed over several stages since 1952. The system has successfully been in use for soil classification and soil survey for almost 70 years.
Einar Eberhardt, Karl Stahr, Peter Schad, Alexander Gröngröft   +3 more
wiley   +1 more source

Hydrogeologic investigations in the Noordplaspolder, the Netherlands [PDF]

, 1974
the Netherlands, the use of the ground water for domestic, municipal, industrial and agricultural purposes is rapidly increasing and with the increasing requirements, it has become necessary to have a better insight in the subsurface geology and ...
Verma, B.P.
core  

Food Security Versus Environmental Health: The Nitrogen Dilemma

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Nitrogen is an essential element for plant growth and, consequently, crop production. However, the cycling of nitrogen in the environment can have negative effects. Here, we review the historical development of scientific and public awareness of these effects and the influence this has had on political action to control them.
Henrike Mielenz, Norbert Bischoff, Klaus Butterbach‐Bahl, Uwe Häußermann, Kurt‐Christian Kersebaum, Karin Rather, Burkhard Stever‐Schoo, Reinhard Well, Claas Nendel   +8 more
wiley   +1 more source

Climate Change and Reduction of Soil Organic Layer Thickness Increases Drought Risk in Mountain Forests of the Northern Alps

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background On ca. 10% of the forested sites in the Bavarian Alps (Germany) mountain, forest soils (so‐called folic histosols) are characterized by thick organic layers overlying poorly weathered calcareous parent material. Aim These organic layers play a critical role in releasing water and nutrients for vegetation, yet they are also sensitive
Marc Kühnbach, Axel Wellpott, Rupert Seidl, Hans‐Joachim Klemmt, Klaas Wellhausen, Jörg Ewald   +5 more
wiley   +1 more source

Safety Analysis of Subway Station Under Seepage Force Using a Continuous Velocity Field

Mathematics
Groundwater is an important factor for the stability of the subway station pit constructed in the offshore area. To reflect the effects of groundwater drawdown on the stability of the station pit, this work uses a surface settlement formula based on ...
Zhufeng Cheng, De Zhou, Qiang Chen, Shuaifu Gu   +3 more
doaj   +1 more source