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Additionally, even when the climate may be the same, the soil conditions also determine which species can thrive in a region. Ambos aceros inoxidables permanecen en estado pasivo en las probetas para todos los contenidos de cloruros. The experimental values of resistance and tenacity are important for the study of the structural integrity of the encircling one of the core. It was suggested that the accelerated corrosion in nitric acid solution containing neptunium was caused by re-oxidation of neptunium.

The second field is below meters over the sea level and from the known data it reaches at least meters over the sea level. Erosion could be assigned to one of three grades: La pimienta de Jamaica [Pimenta dioica L. The September Tehuantepec and Puebla earthquakes were intra-slab earthquakes that together caused significant damage in broad regions of Mexico, including the states of Oaxaca, Chiapas, Morelos, PueblaMexico, and Mexico City.

JavaScript is disabled for your browser. Ina total of 99 samples were collected and were collected in However, for higher cysteine concentrations 10 -4 -2 mol l -1a different behaviour was observed: The values of the growth velocities obtained by this methodology went similar to the opposing ones under normal conditions of operation; while the fractographic analysis show the cracks propagation in trans and intergranular ways, evidencing the complexity of the regulator mechanisms of the one IGSCC even under controlled ambient conditions or with mitigation methodologies like the alternative hydrogen chemistry.

The findings of this study indicated that the amount of springback was reduced under a situation of low strain rate, while a higher amount of springback was obtained with a higher strain rate.

Kaolin from Acoculco PueblaMexico as a raw material: El estado practicaw P The lack of disaggregated information and of research, except for a handful of states with particularly grave demographic and reproductive health problems, were barriers to evaluation. Microstructural analysis of two pre hispanic murals of the Cholula, Puebla archaeological zone; Analisis microestructural de dos murales prehispanicos de la zona arqueologica de Cholula, PueblaMexico.


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Among the stainless steels, the metastable L austenitic steel is susceptible to transformation of austenite-martensite phase from tensile tests at room temperature by increments of plastic deformation.

Moreover, tensile strength experiments were carried out diegi the behavior of friction welded joints of pre- and post-electrochemical corrosion and results indicated that the maximum tensile test value of the dissimilar welded pre-electrochemical corrosion was higher than those of post-electrochemical corrosion and was also very close to AISI parent material value.

Full Text Available To determine the most effective treatment to capture Rhagoletis zoqui and use it as an alternative to chemical insecticides, this study was developed in two orchards of walnut, during June, July and August of in San Nicolas de los Ranchos, Puebla. The sensitization is a corrosion cause that it has studied broadly in the austenitic steels; however its relations don’t knowed very well, into the sensitization and the steel’s mechanical properties.

This study revealed that snakes are still very important for the culture in Cuetzalan del Progreso, finding that the magical-religious and the medicinal use stand out. Full Text Available stainless steels SS were considered as the materials for a dry storage canister. Based on the observation, the study suggests slip bands, formed due to instalzciones deformation, to act as a precursor for SCC initiation.

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We obtained an increase of the pitting potential of mV, highlighting an improvement of the corrosion resistance. In this work, appropriate laser cladding parameters have been determined to obtain Stellite 6 coatings over AISI steel as plane test specimens and SAE EV8 steel as valves substrates.

The Sigma-Aldrich pre-oxidized powders and steel l were characterized using techniques of X-ray diffraction, scanning electron microscopy, X-ray dispersive energy, chemical mapping and Raman spectrometry.

PAH are present in large amounts in the particulate matter comes pacticas the combustion and no combustion.

We hypothesize that large bending-related events at the edge of the flat slab are more likely in areas of low misalignment between the seafloor fabric and the slab strike where reactivation of preexisting structures is favored. The aim eectricas this study was to evaluate the consequences of a Low Cycle Fatigue pre-damage on the subsequent fatigue limit of a L stainless steel. The duration of the transient regime of neutron-induced swelling in annealed AISI L at 0 C is sensitive to both stress and displacement rate variations.

This phenomenon, know as sensitization, it is result from the precipitation of chrome carbides prcticas the grain boundary, making these areas less resistant to corrosion. Both stainless steels specimens embedded in OPC mortar remain in the passive state for all the chloride concentration range studied after one year exposure.


Full Text Available Tis article analyzes the environmental deterioration of forest resources resulting from the introduction of technical innovations in street lighting in the midth century. The tree is urban landscape of a city, provides environmental, aesthetic, scenic, recreational, cultural and economic benefits.

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In a study to determine jaguar presence using camera traps and interviews, we obtained 16 instalacoines records of tepezcuincle Cuniculus paca in different vegetation types such as tropical rainforest and cloud forest, as well as in coffee plantations.

This last variable is the most significant while the bending angle has lesser influence. The Atlixco municipality, Puebla State, at a mean altitude of m, was selected for a study of Fasciola hepatica infection in schoolchildren in Mexico.

Se evaluaron dos variedades de la Sierra Norte de Puebla seleccionadas in situ: The phases imbalance produced for the dissimilar fillers bring out a variation of the pitting corrosion resistance and the mechanical properties. However, the results can contribute to the design of sustainable strategies for the municipality.

Micro-cracks initiated by a high level of tensile residual stress in the surface layer were observed for all the ground specimens but not those in the as-delivered condition.

The purpose of this study is to investigate the influence of the cold reduction rate and an ultrasonic fatigue test UFT on the fatigue behaviors of STS L. Take into account that it is present in different regions all over the world and developed according to the conditions of each region. Distortion measurements were carried out using height In addition the CEMS spectra reveal that the ferromagnetic component is split into two parts which indicates the existence of two iron sites.

Each tecnique giving information on different aspects: In these communities, allspice has medicinal use, and is used as a condiment for food; other technological and cultural uses have been also recorded. Full Text Available From a series of 22 typical 18Cr8Ni stainless steel 40 kg ingots, with copper variable concentrations from 0. A formula is proposed which allows prediction of the failure mode, depending on whether creep-fatigue damage occurs or not.