Energy storage and utilization in relation to the reproductive cycle in the razor clam Ensis arcuatus (Jeffreys, 1865)     

Darriba  Susana; San Juan  Fuencisla; Guerra  Alejandro 《ICES Journal of Marine Science》2005,62(5):886-896

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How does a generalist seabird species use its marine habitat? The case of the kelp gull in a coastal upwelling area of the Humboldt Current     

Villablanca  Roberto; Luna-Jorquera  Guillermo; Marin  Victor H.; Garthe  Stefan; Simeone  Alejandro 《ICES Journal of Marine Science》2007,64(7):1348-1355

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Using beryllium-7 to evaluate soil erosion processes in agricultural lands in semiarid regions of Central Argentina     

Juan Pablo de Rosas  Alexander Dario Esquivel  Diego Martinez Heimann  Agustin E. Negri  Flavia Lohaiza  Diego Leonardo Valladares  Alejandro I. Zavala  Hugo Huck  Jimena Juri Ayub 《Environmental Earth Sciences》2018,77(16):587

This work presents the results of a soil erosion study using the ⁷Be technique. This technique estimates the water erosion/deposition from the comparison between ⁷Be soil content of a reference site and an eroded or sedimented site. The soil samples were collected from an agricultural area of the semiarid region of Argentina near San Luis City, which has a marked rainfall season. The area has been used for crop cultivation, being subjected to plowing practices. The ⁷Be in the Reference Site was in the first centimeter of soil, showing the typical exponential decreasing of ⁷Be soil content with depth, with the ⁷Be inventories value being 340?±?50 Bq m^?2 for the dry season and 571?±?48 Bq m^?2 for the rainy season. The ⁷Be technique was applied to a potential eroded site subjected to traditional tillage practices (plowing). A net soil erosion value of 13.5 t ha^?1 (1.35 kg m^?2) was obtained. From the assumptions of the applied technique, we can draw the inference that this erosion was caused by rains produced in the month prior to the date of soil sampling.  相似文献   

Transposition of foliations and superposition of lineations during polyphase deformation in the Nevado-Filabride complex: tectonic implications     

Ruiz-Fuentes  Alejandro  Aerden  Domingo G. A. M. 《International Journal of Earth Sciences》2018,107(6):1975-1988

International Journal of Earth Sciences - Detailed structural analysis in a ca. 80 km2 area of the western Nevado-Filabride complex (Betic Cordillera) reveals a heterogeneous internal...  相似文献   

Tectonics may affect closed watersheds used to monitor climate change and human activity effects     

Alejandro Jiménez-Bonilla  Manuel Díaz-Azpiroz  Miguel Rodríguez Rodríguez 《地学学报》2023,35(1):58-65

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Nonlinear modelling of the seismic response of masonry structures: Calibration strategies     

D’Altri  Antonio Maria  Cannizzaro  Francesco  Petracca  Massimo  Talledo  Diego Alejandro 《Bulletin of Earthquake Engineering》2022,20(4):1999-2043

Bulletin of Earthquake Engineering - In this paper, a simple and practitioners-friendly calibration strategy to consistently link target panel-scale mechanical properties (that can be found in...  相似文献   

Geotechnical zonation and soil–structure interaction at Puerto Vallarta,México     

Escudero  Christian R.  Ramirez Gaytan  Alejandro  Zamora Camacho  Araceli  Preciado  Adolfo  Flores  Karen L.  Gomez Hernandez  Adan 《Natural Hazards》2022,110(1):247-267

Natural Hazards - We performed a seismic vulnerability assessment that involves geotechnical and building structure analysis for Puerto Vallarta, Mexico, a city located along the pacific coast....  相似文献   

Typology of Municipal Wastewater Treatment Technologies in Latin America     

Adalberto Noyola  Alejandro Padilla‐Rivera  Juan Manuel Morgan‐Sagastume  Leonor Patricia Güereca  Flor Hernández‐Padilla 《洁净——土壤、空气、水》2012,40(9):926-932

This paper presents an analysis of the wastewater treatment plants in six Latin American and Caribbean countries. Based on a sample of 2734 municipal treatment facilities, the applied processes are classified by sizes (influent flow) and type of technologies. The distribution of the technologies is also presented for each of the six countries. In addition, a representative municipal wastewater characterization, based on influent data from 174 treatment plants, is proposed. Results show that stabilization ponds, activated sludge, and the upflow anaerobic sludge blanket reactors represent 80% of the treatment facilities of the sample, providing treatment to 81% of the total flow considered. Moreover, 67% of the plants in the sample are small (flow <25 L/s) and the very small facilities (influent flow <5 L/s) are extensively applied in the region (34% of the sample), especially in Mexico and Brazil. The use of very small treatment plants may result in low energy efficiency systems and on possible incompliance of the discharge standards. This common practice in several countries in Latin America should be revised in order to improve the environmental performance of such facilities.  相似文献   

Parameters of Higuchi’s method to characterize primary waves in some seismograms from the Mexican subduction zone     

Gonzalo Gálvez-Coyt  Alejandro Mu?oz-Diosdado  José A. Peralta  José A. Balderas-López  Fernando Angulo-Brown 《Acta Geophysica》2012,60(3):910-927

Higuchi’s method is a procedure that, if applied appropriately, can determine in a reliable way the fractal dimension D of time series; this fractal dimension permits to characterize the degree of correlation of the series. However, when analyzing some time series with Higuchi’s method, there are oscillations at the right-hand side of the graph, which can cause a mistaken determination of the fractal dimension. In this work, an appropriate explanation is given to this type of behaviour. Using the seismogram as a time series and the properties of the P and S waves, it is possible to use the properties of Higuchi’s method to previously detect the arrival of the earthquake shacking stage, some seconds in advance, approximately 30–35 s in the case of Mexico City. Thus, we propose the Higuchi’s method to characterize and detect the P waves in order to estimate the strength of the forthcoming S waves.  相似文献   

Non-extensivity analysis of seismicity within four subduction regions in Mexico     

Sharon M. Valverde-Esparza  Alejandro Ramírez-Rojas  E. Leticia Flores-Márquez  Luciano Telesca 《Acta Geophysica》2012,60(3):833-845

The non-extensivity approach based on the Tsallis entropy has been applied to seismicity that occurred from 1988 to 2010 along the Mexican South Pacific coast. We analyzed four different regions, characterized by different subduction patterns. Our results indicate a possible correlation between the non-extensive parameters and the seismicity pattern associated with the inclination angle of each subduction region.  相似文献