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Ziqiang Liu, Xinxiao Yu, Guodong Jia and Dandan Wang
Stable isotopes of oxygen and hydrogen were used to estimate seasonal contributions of precipitation to natural spring recharge in Beijing?s mountainous area. Isotopic compositions were shown to be more positive in the dry season and more negative in the...
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Jian-Hong Wan, Rui Bai, Xue-You Li and Si-Wei Liu
Assessment of the natural frequency of the offshore wind turbine (OWT) system is a critical task in design to avoid resonance. The natural frequency of the monopile supported OWT may change during operation and needs to be calculated regularly. Conventio...
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Jiaping Liang, Hang Li, Na Li, Qiliang Yang and Linchao Li
Rapeseed is one of China?s major oil crops, and accurate yield forecasting is crucial to the growth of the rapeseed industry and the country?s food security. In this study, the data on natural and socio-economic factors from 2001 to 2020 and the yield of...
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Jun Ren and Qiuyu Cao
This paper proposes a method of structural modification for the assignment of natural frequencies and mode shapes based on frequency response functions (FRFs). The method involves the addition of masses or stiffness (supporting stiffness or connection st...
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Shirong Cai, Kunlong Niu, Xiaolin Mu, Xiankun Yang and Francesco Pirotti
Precipitation is a key component of the hydrological cycle and one of the important indicators of climate change. Due to climate change, extreme precipitation events have globally and regionally increased in frequency and intensity, leading to a higher p...
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Thomas King, Brian Robinson, Scott Ryan, Kenneth Lee, Michel Boufadel and Jason Clyburne
This study examines the use of chemical dispersant to treat an oil spill after the initial release. The natural and chemically enhanced dispersion of four oil products (dilbit, dilynbit, synbit and conventional crude) were investigated in a wave tank. Ex...
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Christopher R Keyes,Rubén Manso González
Pág. e021
Aim of study: The aim of this study was to analyze 10-year records of ponderosa pine (Pinus ponderosa) seed production, in order to confirm synchronic seed production and to evaluate cyclical masting trends, masting depletion effect, and climate-masting ...
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George L. Vourlitis, Emma Lousie van der Veen, Sebastian Cangahuala, Garrett Jaeger, Colin Jensen, Cinzia Fissore, Eric M. Wood, Joel K. Abraham, Kevin S. Whittemore, Elijah Slaven, Dustin VanOverbeke, James Blauth, Elizabeth Braker, Nina Karnovsky and Wallace M. Meyer III
Urban landscaping conversions can alter decomposition processes and soil respiration, making it difficult to forecast regional CO2 emissions. Here we explore rates of initial mass loss and net nitrogen (N) mineralization in natural and four common urban ...
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Marino Domenico Barberio, Francesca Gori, Maurizio Barbieri, Andrea Billi, Roberto Devoti, Carlo Doglioni, Marco Petitta, Federica Riguzzi and Sergio Rusi
Understanding natural variations of Rn (222Rn) concentrations is the fundamental prerequisite of using this radioactive gas as a tracer, or even precursor, of natural processes, including earthquakes. In this work, Rn concentrations in groundwater were c...
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Isabel Bertolaccini, Etelvina Núñez-Pérez, Emilio Jorge Tizado
Pág. 233 - 242
The study was done during the spring, summer and fall of 1998 and 1999. Samples were taken at random from legume crops and spontaneous plants adjacent to them in the province of León (Spain). Observations were made on the following crops: Medicago sativa...
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Gabriella Caruso, Maria Grazia Giacobbe, Filippo Azzaro, Franco Decembrini, Marcella Leonardi, Stefano Miserocchi, Xiuyun Cao, Chunlei Song and Yiyong Zhou
Bacterial and phytoplankton communities are known to be in close relationships, but how natural and anthropogenic stressors can affect their dynamics is not fully understood. To study the response of microbial communities to environmental and human-induc...
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Laura Steeves, Antonio Agüera, Ramón Filgueira, Øivind Strand and Tore Strohmeier
The feeding activity of bivalves is understood to change in response to a suite of environmental conditions, including food quantity and quality. It has been hypothesized that, by varying feeding rates in response to the available diet, bivalves may be a...
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Simona Retelletti Brogi, Raffaella Casotti, Benjamin Misson, Cecilia Balestra, Margherita Gonnelli, Stefano Vestri and Chiara Santinelli
Estuarine processes play a key role in determining the amount and quality of land-derived dissolved organic matter (DOM) reaching the oceans. Microbial-mediated reactions can affect the concentration, quality, and bioavailability of DOM within an estuary...
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Panayota Makri, Eleni Stathopoulou, Demetrios Hermides, George Kontakiotis, Stergios D. Zarkogiannis, Hariklia D. Skilodimou, George D. Bathrellos, Assimina Antonarakou and Michael Scoullos
The study area is the Thriassion Plain, an important area, in antiquity, surrounding the famous ancient town of Eleusis, 20 km west of Athens. The modern town and port and the entire area were heavily industrialized (1965?1995) coupled with unregulated u...
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Hyun-Gi Kim, Bum-Joon Kim and Kwang-Ho Lee
Concrete foundations have received attention as offshore wind turbine support structures because of their various advantages. However, because of the lack of information on structural analysis and the design method of complex marine environmental loads, ...
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Irina Bejanidze, Oleksandr Petrov, Tina Kharebava, Volodymyr Pohrebennyk, Nazi Davitadze and Nato Didmanidze
The studies were conducted on the natural waters of Georgia: Gortubani and Naminauri (Adigeni region), Danisparauli, Dandalo and Makhinjauri (Adjara region) which exhibit medicinal properties. The following water indicators were determined: titratable ac...
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Guoxu Ma, Tianliang Zhao, Shaofei Kong, Yansong Bao, Chao Chen, Sunling Gong, Jianping Guo, Chao Yu, Ming Wu, Jiacheng Chang and Yingchang You
Various particulate matters (PM) and associated carbonaceous aerosols released from open biomass burning (including open straw burning, grass and forest fires) are major sources of atmospheric pollutants. Northeast China is a central region with high for...
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Natalie S. Peyronnin, Rex H. Caffey, James H. Cowan, Dubravko Justic, Alexander S. Kolker, Shirley B. Laska, Alex McCorquodale, Earl Melancon, John A. Nyman, Robert R. Twilley, Jenneke M. Visser, John R. White, James G. Wilkins
Pág. 1 - 20
Future conditions of coastal Louisiana are highly uncertain due to the dynamic nature of deltas, climate change, tropical storms, and human reliance on natural resources and ecosystem services. Managing a system in which natural and socio-economic compon...
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Danika Holmes, Jamie McEvoy, Jean L. Dixon, Scott Payne
Pág. 1 - 25
Across the globe, climate change is projected to affect the quantity, quality, and timing of freshwater availability. In western North America, there has been a shift toward earlier spring runoff and more winter precipitation as rain. This raises questio...
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Danika Holmes, Jamie McEvoy, Jean L. Dixon and Scott Payne
Across the globe, climate change is projected to affect the quantity, quality, and timing of freshwater availability. In western North America, there has been a shift toward earlier spring runoff and more winter precipitation as rain. This raises questio...
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