Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium     

M. A. García-Hernández  J. F. Villarreal-Chiu  M. T. Garza-González 《International Journal of Environmental Science and Technology》2017,14(9):2023-2038

Contamination by hexavalent chromium has had a large impact on modern society and human health. This problem is a consequence of its great industrial applicability to several products and processes. Short-term exposure to hexavalent chromium can cause irritation, ulceration in skin and stomach and in addition to cancer, dermatitis, and damage to liver, renal circulation and nervous tissues, with even death being observed in response to long-term exposures. Many techniques have been used for the remediation of this pollutant, including physical and chemical approaches and, in more recent years, biological methods. Filamentous fungi isolated from contaminated sites exhibit a significant tolerance to heavy metal; hence, they are an important source of microbiota capable of eliminating hexavalent chromium from the environment. However, these microorganisms can do so in different ways, including biosorption, bioreduction, and bioaccumulation, among others. In this review, we explore several of the most documented mechanisms that have been described for fungi/hexavalent chromium interactions and their potential use in bioremediation.  相似文献   

Seismic Characteristics of the Vulcanian Explosions from the 2003–2005 Eruption at Colima Volcano,Mexico     

Francisco Javier Núñez-Cornú  Juan Manuel Espíndola  Fidencio Alejandro Nava Pichardo  Carlos Suárez-Plascencia 《Pure and Applied Geophysics》2016,173(10-11):3513-3524

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Identification of Bedrock Lithology using Fractal Dimensions of Drainage Networks extracted from Medium Resolution LiDAR Digital Terrain Models     

Joaquín Cámara  Vicente Gómez-Miguel  Miguel Ángel Martín 《Pure and Applied Geophysics》2016,173(3):945-961

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Estimation of the Crustal Bulk Properties Beneath Mainland Portugal from P-Wave Teleseismic Receiver Functions     

Süleyman Dündar  Nuno A. Dias  Graça Silveira  Rainer Kind  Lev Vinnik  Luís Matias  Marcelo Bianchi 《Pure and Applied Geophysics》2016,173(6):1949-1970

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Erratum to: Flare-Shaped Acoustic Anomalies in the Water Column Along the Ecuadorian Margin: Relationship with Active Tectonics and Gas Hydrates     

Francois Michaud  Jean-Noël Proust  Alexandre Dano  Jean-Yves Collot  Grâce Daniella Guiyeligou  María José Hernández Salazar  Gueorgui Ratzov  Carlos Martillo  Hugo Pouderoux  Laure Schenini  Jean-Frederic Lebrun  Glenda Loayza 《Pure and Applied Geophysics》2016,173(4):1429-1429

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Active Crustal Deformation in the Area of San Carlos,Baja California Sur,Mexico as Shown by Data of Local Earthquake Sequences     

Luis Munguía  Mario González-Escobar  Miguel Navarro  Tito Valdez  Sergio Mayer  Alfredo Aguirre  Victor Wong  Manuel Luna 《Pure and Applied Geophysics》2016,173(10-11):3631-3644

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Low Angle Contact Between the Oaxaca and Juárez Terranes Deduced From Magnetotelluric Data     

Jorge A. Arzate-Flores  Roberto Molina-Garza  Fernando Corbo-Camargo  Víctor Márquez-Ramírez 《Pure and Applied Geophysics》2016,173(10-11):3357-3371

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Effect of NAPL Source Morphology on Mass Transfer in the Vadose Zone          下载免费PDF全文

Benjamin G. Petri  Radek Fučík  Tissa H. Illangasekare  Kathleen M. Smits  John A. Christ  Toshihiro Sakaki  Carolyn C. Sauck 《Ground water》2015,53(5):685-698

The generation of vapor‐phase contaminant plumes within the vadose zone is of interest for contaminated site management. Therefore, it is important to understand vapor sources such as non‐aqueous‐phase liquids (NAPLs) and processes that govern their volatilization. The distribution of NAPL, gas, and water phases within a source zone is expected to influence the rate of volatilization. However, the effect of this distribution morphology on volatilization has not been thoroughly quantified. Because field quantification of NAPL volatilization is often infeasible, a controlled laboratory experiment was conducted in a two‐dimensional tank (28 cm × 15.5 cm × 2.5 cm) with water‐wet sandy media and an emplaced trichloroethylene (TCE) source. The source was emplaced in two configurations to represent morphologies encountered in field settings: (1) NAPL pools directly exposed to the air phase and (2) NAPLs trapped in water‐saturated zones that were occluded from the air phase. Airflow was passed through the tank and effluent concentrations of TCE were quantified. Models were used to analyze results, which indicated that mass transfer from directly exposed NAPL was fast and controlled by advective‐dispersive‐diffusive transport in the gas phase. However, sources occluded by pore water showed strong rate limitations and slower effective mass transfer. This difference is explained by diffusional resistance within the aqueous phase. Results demonstrate that vapor generation rates from a NAPL source will be influenced by the soil water content distribution within the source. The implications of the NAPL morphology on volatilization in the context of a dynamic water table or climate are discussed.  相似文献   

Large Earthquakes at the Ibero-Maghrebian Region: Basis for an EEWS     

Elisa?BufornEmail author  Agustín?Udías  Carmen?Pro 《Pure and Applied Geophysics》2015,172(9):2387-2396

Large earthquakes (M_w > 6, I_max > VIII) occur at the Ibero-Maghrebian region, extending from a point (12ºW) southwest of Cape St. Vincent to Tunisia, with different characteristics depending on their location, which cause considerable damage and casualties. Seismic activity at this region is associated with the boundary between the lithospheric plates of Eurasia and Africa, which extends from the Azores Islands to Tunisia. The boundary at Cape St. Vincent, which has a clear oceanic nature in the westernmost part, experiences a transition from an oceanic to a continental boundary, with the interaction of the southern border of the Iberian Peninsula, the northern border of Africa, and the Alboran basin between them, corresponding to a wide area of deformation. Further to the east, the plate boundary recovers its oceanic nature following the northern coast of Algeria and Tunisia. The region has been divided into four zones with different seismic characteristics. From west to east, large earthquake occurrence, focal depth, total seismic moment tensor, and average seismic slip velocities for each zone along the region show the differences in seismic release of deformation. This must be taken into account in developing an EEWS for the region.  相似文献   

Earthquake Early Warning System: Application to the Ibero–Maghrebian Region     

E. Buforn  A. Udías 《Pure and Applied Geophysics》2015,172(9):2333-2334

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