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Degradation of nucleic acids and nucleotides in several conditions with perspectives of retrieval: A review

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Advances in Bioscience and Biotechnology 2014年第1期5卷 36-39页

作者： josé martínez reyes Lenin Ejecatl Medina Orozco Melitón Estrada Jaramillo Iván Vera Romero Agustina Ortiz Soriano Trajectory of Educational Innovation University of the Ciénega of Michoacán State Sahuayo Méxio Trajectory of Energy Engineering University of the Ciénega of Michoacán State Sahuayo Méxio Trajectory of Food Genomics University of the Ciénega of Mi-choacán State Sahuayo Méxio

Deoxyribonucleic acid (DNA) or oligonucleotides, can be modified in several ways as chemical degradation by electrophilic reaction, attack of radicals, hydrolytic deamination or oxidative damage caused by ionizing radiation. This work discussed these degradation mechanisms, determining the effects on these biomolecules. The actual knowledge about DNA damages only permits partial enzymatic repair treatments.

关键词： DNA Chemical Degradation

Biogas Estimation as a Basis for the Implementation of an Intermunicipal Landfill: Michoacan, Mexico

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Journal of Environmental Protection 2014年第7期5卷 577-582页

作者： Iván Vera-Romero josé martínez reyes Claudio C. Espíritu-Barragán Melitón Estrada-Jaramillo Agustina Ortiz-Soriano Lenin E. Medina-Orozco Trajectory of Educational Innovation University of the Cienega of Michoacan State Sahuayo Mexico Trajectory of Energy Engineering University of the Cienega of Michoacan State Sahuayo Mexico Trajectory of Food Genomics University of the Cienega of Michoacan State Sahuayo Mexico

Municipal solid waste (MSW) generated in the municipalities of Sahuayo, Jiquilpan and Venustiano Carranza in Michoacan, is deposited in open dumps becoming hot spots for health and the environment. The total population in the three municipalities is 130,497 habitants, with a per capita waste production estimated in 0.718 kg·hab-1·day-1 (34,203 t·yr-1). The aim of this study was to estimate the formation of biogas for power generation from the decomposition of waste. The model used was the mexican model of biogas (version 2.0), assuming a useful life of 21 years of the landfill at a cost of 0.19 USD per kWh, the average CFE rate for municipal public lighting. Four possible scenarios were evaluated: one optimal recovering 68% of the biogas (10,095 tonnes of methane in 20 years), having a savings concept in electricity of 8,015,252 USD;in the second case (optimistic intermediate), it is assumed that it obtains 61% of biogas (9046 tonnes of methane) with benefits in power generation for 7,159,679 USD;the third case (pessimistic intermediate) estimating 48% of biogas recovered, being captured 7118 tonnes of methane with profits of 5,633,846 USD into electrical energy, the latter case (pessimistic), assuming 40% of biogas recovered, transforming 4672 tonnes of methane resultant in an economic benefit of 3,697,324 USD for electricity generation. The results justify the investment of the landfill and it is a measure to mitigate climate change and disease prevention.

关键词： Municipal Street Lighting Alternative Energy Public Health

Geochemical Prospection of the Chapala Ciénega at Michoacán State

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International Journal of Geosciences 2014年第9期5卷 1007-1011页

作者： josé martínez reyes Ivan Vera Romero Meliton Estrada Jaramillo Agustina Ortiz Soriano Ignacio Moreno Nava Francisco Gabriel Montes Ayala Francisco García ávalos Ernesto Mendez Ruiz 1University of the Ciénega of Michoacán State Sahuayo México 2Michoacan Society of History Archaeology and Geography A.C. La Palma de Jesús México Michoacan Society of History Archaeology and Geography A.C. La Palma de Jesús México University of the Ciénega of Michoacán State Sahuayo México

The geochemical prospection as a branch of Applied Geochemistry or “Geochemistry of the Landscape” studies the spatial and temporal location of geochemical anomalies in order to locate geological resources of economic value. The Ciénega de Chapala zone in Michoacán is located east of the Citala rift hosting a geological system that leads to regional hydrothermal activity, mainly the Pajacuaran and Ixtlan failures. The regional geothermics include a superficial hydrothermalism consisting of springs and wells of hot water with temperatures between 48°C and 94°C in Ixtlan de los Hervores and mud volcanoes in the water with temperatures between 48°C and 94°C in Ixtlan de los Hervores and mud volcanoes in the Los Negritos. The waters and gases of these hydrothermal manifestations have physicochemical characteristics that indicate the presence of geothermal fluids. To search for possible presence of minerals of economic value, a study of elemental chemical analysis was performed by scanning electron microscopy in samples of rock of the sierra de Pajacuaran, the result of the analysis is clearly abnormal values which may be indicative a geochemical anomaly as well as the possible presence of minerals of economic value in the region. Given the above, the area of the Ciénega de Chapala in Michoacán is a zone where work can be continued both geothermal and mineralogical exploration by conventional techniques or even totally innovative technologies.

关键词： Geochemical Prospection Ciénega Michoacán

A stable anthraquinone-derivative cathode to develop sodium metal batteries: The role of ammoniates as electrolytes

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Journal of Energy Chemistry 2023年第2期77卷 572-580,I0015页

作者： Débora Ruiz-martínez josé M.Orts Roberto Gómez Departament de Química Física i Institut Universitari d’Electroquímica Universitat d’AlacantApartat 99Alicante E-03080Spain

Rechargeable sodium metal batteries constitute a cost-effective option for energy storage although sodium shows some drawbacks in terms of reactivity with organic solvents and dendritic *** we demonstrate that an organic dye,indanthrone blue,behaves as an efficient cathode material for the development of secondary sodium metal batteries when combined with novel inorganic *** electrolytes are ammonia solvates,known as liquid ammoniates,which can be formulated as NaI·3.3NH_(3) and NaBF_(4)·2.5NH_(3).They impart excellent stability to sodium metal,and they favor sodium non-dendritic growth linked to their exceedingly high sodium ion *** advantage is complemented by a high specific *** battery described here can last hundreds of cycles at 10 C while keeping a Coulombic efficiency of 99%from the first *** of the high capacity of the cathode and the superior physicochemical properties of the electrolytes,the battery can reach a specific energy value as high as 210 W h kgIB^(-1),and a high specific power of 2.2 kW kgIB^(-1),even at below room temperature(4℃).Importantly,the battery is based on abundant and cost-effective materials,bearing promise for its application in large-scale energy storage.

关键词： Sodium metal batteries Anthraquinone-based cathode Vat dye Indanthrone blue Inorganic electrolytes Liquid ammoniates

Mushroom Production as an Alternative for Rural Development in a Forested Mountainous Area

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Journal of Mountain Science 2014年第2期11卷 535-543页

作者： josé *** josé R.GONZáLEZ-OLABARRIA Juan martínez DE ARAGóN Departament de Producció Vegetal i Ciència Forestal Universitat de Lleida-Agrotecnio Center (UdL-Agrotecnio).Av. Rovira Roure 191 E-25198 Lleida Spain Centre Tecnològic Forestal de Catalunya (CTFC-CEMFOR). Ctra. de St. Lloren? de Morunys km 2 E-25280 Solsona Spain

Wild mushrooms are recognized as important non-wood forest products in mountainous ecosystems, but their real potential for generating rural economies has not been fully evaluated due to the difficulties in obtaining reliable productivity data, minimizing their true potential as contributor to rural economies. Mushroom yield models based on large data series from Pinus forest ecosystems in the region of Catalonia(Spain), combined with data from the Spanish National Forest Inventory allow us to estimate the potential mushroom productivity by forest ecosystems. The results of 24,500 tons/yr of mushrooms of which 16,300 tons are classified as edible and 7,900 tons are commonly marketed demonstrate the importance of mushroom productions in Catalonian pine forests, mostly located in mountainous areas where the development of agricultural activities is limited. Economic mushroom value is estimated at 48 million € for the edible mushroom and 32 million € for those corresponding to marketable yields, confirming the potential of this non-wood forest product. These production results and corresponding economic values provide a basis for the incorporation of wild mushrooms as significant non-wood forest products in the development of forest policies in mountainous areas.

关键词： Non-wood forest products Mushroom models National Forest Inventory Economic value Mushroom potential estimation

Influence of steel jacket thickness on the RC bridges' seismic vulnerability

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第1期6卷 15-34页

作者： Bertha Olmos josé Manuel Jara Gerardo Gómez Guillermo martínez Department of Civil Engineering Universidad Michoacana de San Nicolas de Hidalgo

The seismic demands of bridges subjected to strong earthquakes are mostly concentrated on piers. The main objective of this study is to assess the seismic vulnerability of retrofitted bridges with steel jackets. It analyzes the influence of the steel jacket thickness on the seismic capacity and demand of bridges. The bridges in study have two simple supported spans with superstructure composed by AASHTO type girders and a substructure formed with one circular pier over a stiff foundation. They are located on the Pacific coast of Mexico that is a zone of high seismicity. The bridges seismic capacity are evaluated through nonlinear static analyses and the shear force and displacement demands were determined using capacity spectra with a group of 10 real accelerograms from a subduction source. The response spectra were scaled to several peak ground accelerations(PGA) with the aim to estimate four damage scenarios linked each one to a probability of exceedance in a specific period, for return periods in the range of 72-3500 years that represent service level and maximum considered earthquake. Results show that the confining effect provided by the steel jackets substantially improves the seismic performance of the bridges piers. The increase of jacket thickness guides to important increments on columns base shear capacity, and the influence of the steel jacket thickness depends on the limit state and bridge slenderness ratio.

关键词： Steel jacket Piers’retrofit Subduction earthquakes RC piers’vulnerability

Optimizing urban traffic control using a rational agent

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第12期15卷 1123-1137页

作者： Salvador IBARRA-martínez josé A.CASTN-ROCHA Julio LARIA-MENCHACA Engineering School Autonomous University of Tamaulipas

This paper is devoted to developing and evaluating a set of technologies with the objective of designing a methodology for the implementation of sophisticated traffic lights by means of rational agents. These devices would be capable of optimizing the behavior of a junction with multiple traffic signals, reaching a higher level of autonomy without losing reliability, accuracy, or efficiency in the offered services. In particular, each rational agent in a traffic signal will be able to analyze the requirements and constraints of the road, in order to know its level of demand. With such information, the rational agent will adapt its light cycles with the view of accomplishing more fluid traffic patterns and minimizing the pollutant environmental emissions produced by vehicles while they are stopped at a red light, through using a case-based reasoning(CBR) adaptation. This paper also integrates a microscopic simulator developed to run a set of tests in order to compare the presented methodology with traditional traffic control methods. Two study cases are shown to demonstrate the efficiency of the introduced approach, increasing vehicular mobility and reducing harmful activity for the environment. For instance, in the first scenario, taking into account the studied traffic volumes, our approach increases mobility by 23% and reduces emissions by 35%. When the roads are managed by sophisticated traffic lights, a better level of service and considerable environmental benefits are achieved, demonstrating the utility of the presented approach.

关键词： Rational agents Traffic light control Optimization Traffic mobility

A Protocol for Fractal Studies on Porosity of Porous Media: High Quality Soil Porosity Images

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Journal of Earth Science 2017年第5期28卷 888-896页

作者： Carlos García-Gutiérrez Fernando San josé martínez J.Caniego Dpto.Matemática Aplicada E.T.S.I.Navales Universidad Politécnica de Madrid Dpto.Matemática Aplicada E.T.S.I.Agrónomos Universidad Politécnica de Madrid

A protocol for obtaining digital images from natural porous media with a wide range of pore sizes, intended for fractal studies of the porosity, is proposed. Soil porosity is used as para- digm of complex natural porous media in this study. The use of several imaging devices and fluores- cent compounds to enhance the contrast between the solid and the pore phase is tested. Finally a protocol is reached using a photo camera and a confocal microscope. It is the first time that confocal microscopy is used for this purpose. Artificial porous images are created through random Sierpinski carpet fractals and the statistical information of real soil images. These ground truth images are used in an objective comparison of automatic segmentation algorithms for the obtained images. A statistical classification on the performance of several automatic segmentation algorithms for this tv^e of images is reached.

关键词： porous media micromorphology image segmentation confocal microscope fractal,porosity photography.

Use of recycled concrete aggregates in asphalt mixtures for pavements:A review

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第5期9卷 725-741页

作者： Juan Gabriel Bastidas-martínez Fredy Alberto reyes-Lizcano Hugo Alexander Rondón-Quintana Faculty of Engineering Universidad Piloto de ColombiaBogotáDC 110231Colombia Faculty of Engineering Pontificia Universidad JaverianaBogotáDC 110131Colombia Facultad del Medio Ambiente y Recursos Naturales Universidad Distrital Francisco Joséde CaldasBogotáDC 110131Colombia

Large quantities of natural aggregates(NA)are required in the manufacturing of asphalt mixtures for *** extraction of NA generates high environmental impacts that negatively affect environmental preservation and *** alternative materials obtained in construction and demolition processes in civil construction worked have been studies as possible replacements for NA,with the purpose of reducing these environmental *** foregoing study presents a state of knowledge review referring to the use of recycled concrete aggregates(RCA)when these are used in the manufacturing of asphalt mixtures(mainly hot-mix asphalt HMA type).Environmental aspects are presented,as well as possible benefits and limitations of using RCA as replacements for NA in asphalt ***,it is not possible to establish a behavior pattern,since the characteristics of the RCA are very heterogeneous and vary from the original source of the *** is highlighted from the literature that RCA has a wide potential for use in the manufacture of asphalt mixtures,since in most studies,the mixtures with these materials comply the quality requirements contemplated by the construction specifications,mainly in low-volume ***,based on the literature review,some recommendations and suggestions are presented for future research.

关键词： Recycled concrete aggregates Asphalt mixtures Mechanical properties Volumetric composition