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排序方式: 共有1007条查询结果,搜索用时 703 毫秒
261.
262.
Zhu Yunqing Wang Tian Wang Wenjuan Chen Siyu Lichtfouse Eric Cheng Cheng Zhao Jie Li Yingxuan Wang Chuanyi 《Environmental Chemistry Letters》2019,17(1):481-486
Environmental Chemistry Letters - Contamination of waters by pharmaceuticals is a major health issue. Therefore, there is a need for efficient techniques to remove pharmaceutical pollutants. Here,... 相似文献
263.
Mao Xinyou Wang Lan Gu Shiqing Duan Yanyan Zhu Yunqing Wang Chuanyi Lichtfouse Eric 《Environmental Chemistry Letters》2018,16(2):653-658
Environmental Chemistry Letters - Water pollution caused by heavy metals has dramatically impacted ecosystems in recent years. For instance, 45.4% of lakes in China are in the category of moderate... 相似文献
264.
Wayne Chudyk Christine Sotolongo Eric Mueller 《Environmental monitoring and assessment》2014,186(1):415-420
A phenosafranine-containing Nafion film attached to the distal end of a fiber-optic probe forms a functional redox-sensitive optical sensor. The synthetic cationic photoactive dye phenosafranine, 3,7-diamino-5-phenylphenazinium chloride, responds with changes in light absorbance between its oxidized and reduced forms. This optical property persists when phenosafranine is sorbed into Nafion, a perfluorosulfonate anionic film. Optical properties of the sensor are similar to those seen by others in solution. At high redox conditions, such as an open nitrogen-purged aqueous pH 6.5 solution, optical absorbance of phenosafranine is high, while at low redox conditions, such as an aqueous pH 6.5 iron(II) solution, optical absorbance of phenosafranine is low. Titration of a closed pH 6.5 aqueous solution with a standard iron(II) solution lowers redox potential in a predictable manner and can be followed by the optical redox sensor in parallel with a commercial redox potential electrode. 相似文献
265.
Anne-Laure Lereboullet Gérard Beltrando Douglas K. Bardsley Eric Rouvellac 《Regional Environmental Change》2014,14(5):1951-1966
Mediterranean viticulture could suffer from hotter and drier growing seasons over the coming decades. The present article focuses on the wine-producing area Côtes-du-Roussillon-Villages near Perpignan, in southern France. We used observational daily data (1925–2010) from Perpignan weather station and daily outputs (2001–2060) of the regional climate model ARPEGE-RETIC-V4 from Météo-France with scenarios A2, A1B and B1, to assess the exposure of the regional wine system to changes in temperature and precipitation, both in the recent past and the coming decades (1925–2060). Temperatures during the growing season and summer temperature extremes have been increasing continuously since the mid-1980s and are projected to increase faster from the mid-2040s. Precipitation is highly variable and very low in summer, and projections suggest greater uncertainty, and more extreme drought events could be expected. The analysis of climate data was complemented by thirty-two in-depth interviews with local actors of the wine industry to assess the impacts of climate change on their activities and potential adaptive options. Producers reported negative impacts of recent changes in climate in conjunction with a difficult economic situation. Analyses of historical, social and economic backgrounds are important to fully conceptualize the nature and extent of climate change risks in the region. This case study provides important insights into the roles of non-climatic factors in the generation of vulnerability for Mediterranean agricultural systems facing rapid climate change. 相似文献
266.
Crini Grégorio Lichtfouse Eric Wilson Lee D. Morin-Crini Nadia 《Environmental Chemistry Letters》2019,17(1):195-213
Environmental Chemistry Letters - The removal of contaminants from wastewaters is a major challenge in the field of water pollution. Among numerous techniques available for contaminant removal,... 相似文献
267.
Environmental Chemistry Letters - The rising atmospheric CO2 level is partly responsible for global warming. Despite numerous warnings from scientists during the past years, nations are reacting... 相似文献
268.
Pesticide risk assessment and management in a globally changing world—report from a European interdisciplinary workshop 总被引:1,自引:1,他引:0
Marc Babut Gertie H. Arts Anna Barra Caracciolo Nadia Carluer Nicolas Domange Nikolai Friberg Véronique Gouy Merete Grung Laurent Lagadic Fabrice Martin-Laurent Nicolas Mazzella Stéphane Pesce Benoit Real Stefan Reichenberger Erwin W. M. Roex Kees Romijn Manfred Röttele Marianne Stenrød Julien Tournebize Françoise Vernier Eric Vindimian 《Environmental science and pollution research international》2013,20(11):8298-8312
269.
270.
Jerrold D. McAlpine Darko R. Koracin Douglas P. Boyle John A. Gillies Eric V. McDonald 《Environmental Fluid Mechanics》2010,10(6):691-710
Flights of rotorcraft over the desert floor can result in significant entrainment of particulate matter into the atmospheric
boundary layer. Continuous or widespread operation can lead to local and regional impacts on visibility and air quality. To
account for this pollutant source in air quality models, a parameterization scheme is needed that addresses the complex vertical
distribution of dust ejected from the rotorcraft wake into the atmospheric surface layer. A method to parameterize the wind
and turbulence fields and shear stress at the ground is proposed here utilizing computational fluid dynamics and a parameterized
rotor model. Measurements taken from a full scale experiment of rotorcraft flight near the surface are compared to the simulation
results in a qualitative manner. The simulation is shown to adequately predict the forward detachment length of the induced
ground jet compared to the measured detachment lengths. However, the simulated ground vortex widths and vorticity deviate
substantially from the measured values under a range of flight speeds. Results show that the method may be applicable for
air quality modeling assuming slow airspeeds of the rotorcraft, with advance ratios of 0.005–0.02. 相似文献