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Sibilla Stefano Meninno Sabrina Canelas Ricardo Birjukovs 《Environmental Fluid Mechanics》2020,20(3):479-484
Environmental Fluid Mechanics - 相似文献
114.
After the devastating earthquake of 8 October 2005 in Kashmir, international organizations provided the Pakistani government with relief and reconstruction assistance. Under the oft‐cited motto ‘rebuild better’, many of these efforts targeted the rural areas. The emergency period was followed by a development phase, during which all actors sought to ensure that their reconstruction projects would have long‐term, sustainable impacts. Based on the authors’ experience during that phase, this paper offers specific guidelines for rehabilitation work on Kashmir's rural water supply system, stressing the need for analysis of the social context to guarantee sustainability of the completed projects. 相似文献
115.
Cuoco Emilio Viaroli Stefano Paolucci Vittorio Mazza Roberto Tedesco Dario 《Environmental geochemistry and health》2022,44(7):2065-2082
Environmental Geochemistry and Health - A theoretical pattern for Fe and As co-precipitation was tested directly in a groundwater natural system. Several monitoring wells were sampled to identify... 相似文献
116.
Manzo Sonia Parrella Luisa Schiavo Simona Spaziani Fabio Chiavarini Salvatore Tebano Carlo De Maio Lucio Capone Stefano Siciliano Anna Valeria Armiento Giovanna 《Environmental science and pollution research international》2022,29(55):83291-83303
Environmental Science and Pollution Research - In this study we propose, a multi-step strategy of selection and characterization of long-term dataset of contaminant concentrations in different... 相似文献
117.
In this work we present the results of an experimental study on the abatement of polychlorinated biphenyl (PCBs) in contaminated soil using a high energy milling technique, that promotes a reaction only by impact between milling bodies. A sample of soil from a controlled landfill was treated with powdered NaBH(4) using two different hydride/soil ratios (5 and 2.5% w/w). The efficiency of the dehalogenation/hydrogenation reaction was studied as a function of the milling time (3.5 up to 30 h). After each run, the total PCBs content and the production of inorganic chloride were measured. The complete abatement was obtained with a starting PCBs concentration of about 2600 mg/kg. The residual PCBs concentration resulted to be <0.2 mg/kg. The final products of the treatment were biphenyl and NaCl. Other toxic or hazardous organic by-products were not generated. Boron was found as boric acid. 相似文献
118.
The results of recent studies by our group have suggested that in social wasps of the genus Polistes the Dufour’s gland is involved in kin recognition. In fact, the same hydrocarbons occurring on the cuticle are found in the
gland secretion, and in P. dominulus the composition of the glandular secretion is more similar in foundresses belonging to the same colonies than in heterocolonial
foundresses. In this study, P. dominulus colonies were experimentally presented with previously treated dead conspecific females. These lures had been deprived of
their epicuticular lipids and coated with epicuticular or Dufour’s gland secretion extracts from females hetero- or homocolonial
with respect to the tested colonies. The behaviour of the colonies towards these lures indicates that, like the epicuticular
lipids, the Dufour’s gland secretion is involved in nestmate recognition.
Received: 14 August 1995/Accepted after revision: 5 November 1995 相似文献
119.
Stefano Manzoni Gabriel Katul Philip A. FayH. Wayne Polley Amilcare Porporato 《Ecological modelling》2011,222(3):653-665
Ecosystem functioning is intimately linked to its physical environment by complex two-way interactions. These two-way interactions arise because vegetation both responds to the external environment and actively regulates its micro-environment. By altering stomatal aperture, and therefore the transpiration rate, plants modify soil moisture and atmospheric humidity and these same physical variables, in return, modify stomatal conductance. Relationships between biotic and abiotic components are particularly strong in closed, managed environments such as greenhouses and growth chambers, which are used extensively to investigate ecosystem responses to climatic drivers. Model-assisted designs that account for the physiological dynamics governing two-way interactions between biotic and abiotic components are absent from many ecological studies. Here, a general model of the vegetation-atmosphere system in closed environments is proposed. The model accounts for the linked carbon-water physiology, the turbulent transport processes, and the energy and radiative transfer within the vegetation. Leaf gas exchange is modeled using a carbon gain optimization approach that is coupled to leaf energy balance. The turbulent transport within the canopy is modeled in two-dimensions using first-order closure principles. The model is applied to the Lysimeter CO2 Gradient (LYCOG) facility, wherein a continuous gradient of atmospheric CO2 is maintained on grassland assemblages using an elongated chamber where the micro-climate is regulated by variation in air flow rates. The model is employed to investigate how species composition, climatic conditions, and the imposed air flow rate affect the CO2 concentration gradient within the LYCOG and the canopy micro-climate. The sensitivity of the model to key physiological and climatic parameters allows it to be used not only to manage current experiments, but also to formulate novel ecological hypotheses (e.g., by modeling climatic regimes not currently employed in LYCOG) and suggest alternative experimental designs and operational strategies for such facilities. 相似文献
120.
Casadei Stefano Peppoloni Francesco Ventura Flaminia Teodorescu Razvan Dunea Daniel Petrescu Nicolae 《Environmental science and pollution research international》2021,28(21):26488-26499
Environmental Science and Pollution Research - In many countries, water supplies are limited and must be managed for different uses. Providing additional resources for irrigation can be an... 相似文献