• Energy Research
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Sensing and measuring meteorological and physiological parameters of humans, animals, and plants are necessary to understand the complex interactions that occur between atmospheric processes and the health of the living organisms. Advanced sensing technologies have provided both meteorological and biological data across increasingly vast spatial, spectral, temporal, and thematic scales. Information and communication technologies have reduced barriers to data dissemination, enabling the circulation of information across different jurisdictions and disciplines. Due to the advancement and rapid dissemination of these technologies, a review of the opportunities for sensing the health effects of weather and climate change is necessary. This paper provides such an overview by focusing on existing and emerging technologies and their opportunities and challenges for studying the health effects of weather and climate change on humans, animals, and plants.

Con motivo de una reciente reforma constitucional en materia energética, el sistema jurídico mexicano fue radicalmente modificado, abriendo el mercado energético al sector privado, incluso, incorporando a las compañías públicas al propio mercado, tanto en hidrocarburos como en energía eléctrica. Adicionalmente, tomando en consideración el régimen especial de la tierra en México, mediante el cual se conceden ciertas garantías a los tenedores de ésta, cuando se traten de ejidos o pueblos indígenas el nuevo comportamiento de la industria energética para la explotación de la tierra impone una serie de mecanismos de negociación para el uso del suelo, tomando en consideración el máximo respeto por los derechos y garantías de los pueblos indígenas y de los ejidatarios. Adicionalmente, con una legislación más antigua, se expondrá lo relativo a la consulta previa tratándose de la industria minera en México. Por tanto, el objetivo de este trabajo es exponer de forma general, el régimen de consulta previa que ahora se exige de forma estatutaria para el uso de la tierra, sea su destino el sector minero, eléctrico o de hidrocarburos. Se debe tomar en cuenta que la reforma constitucional en materia energética, así como su legislación secundaria, aún y cuando ya entró en vigor, todavía está en proceso de implementación

Rural telecommunications projects in developing regions have a long history of unsuccessful experiences due to the complexity of such projects: Practically none of the dimensions of integral sustainability are straight forward in such projects. When sustainability becomes a priority, it is difficult for traditional alliances of development to account for all critical success factors. In the Peruvian Amazon Rainforest, some institutions have developed rural telecommunications projects along the Napo River during the last 10 years. The experience has shown at each stage what aspects of sustainability were not taken into account because the partners involved did not have all the needed capacities, and this has made the alliances of partners evolve in a sustainability-driven manner. This paper analyzes these cases and assesses how sustainability has evolved in relation to the structure of such alliances.

In this article, the behavior of the thrust force on the blades of a 10 kW wind turbine was obtained by considering the characteristic wind speed of the Isthmus of Tehuantepec. Analyzing mechanical forces is essential to efficiently and safely design the different elements that make up the wind turbine because the thrust forces are related to the location point and the blade rotation. For this reason, the thrust force generated in each of the three blades of a low-power wind turbine was analyzed. The angular position (θ) of each blade varied from 0° to 120°, the blades were segmented (r), and different wind speeds were tested, such as cutting, design, average, and maximum. The results demonstrate that the thrust force increases proportionally with increasing wind speed and height, but it behaves differently on each blade segment and each angular position. This method determines the angular position and the exact blade segment where the smallest and the most considerable thrust force occurred. Blade 1, positioned at an angular position of 90°, is the blade most affected by the thrust force on P15. When the blade rotates 180°, the thrust force decreases by 9.09 N; this represents a 66.74% decrease. In addition, this study allows the designers to know the blade deflection caused by the thrust force. This information can be used to avoid collision with the tower. The thrust forces caused blade deflections of 10% to 13% concerning the rotor radius used in this study. These results guarantee the operation of the tested generator under their working conditions.

The journal The Lancet recently published a countdown on health and climate change. Attention was focused solely on humans. However, animals, including wildlife, livestock and pets, may also be impacted by climate change. Complementary to the high relevance of awareness rising for protecting humans against climate change, here we present a One Health approach, which aims at the simultaneous protection of humans, animals and the environment from climate change impacts (climate change adaptation). We postulate that integrated approaches save human and animal lives and reduce costs when compared to public and animal health sectors working separately. A One Health approach to climate change adaptation may significantly contribute to food security with emphasis on animal source foods, extensive livestock systems, particularly ruminant livestock, environmental sanitation, and steps towards regional and global integrated syndromic surveillance and response systems. The cost of outbreaks of emerging vector-borne zoonotic pathogens may be much lower if they are detected early in the vector or in livestock rather than later in humans. Therefore, integrated community-based surveillance of zoonoses is a promising avenue to reduce health effects of climate change. FEMS Microbiology Letters, 365 (11) ISSN:0378-1097 ISSN:1574-6968 ISSN:0168-6496 ISSN:0920-8534 ISSN:0168-6445

AbstractThe aim of this work was to synthesize and characterize nanoscale zero-valent iron (NZVI) supported on diatomaceous earth (DE) at two different molar concentration 3 M and 4M (nZVI-DE-1 nZVI-DE-2), to test the decolorization treatment of acid blue dye (AB) and perform a toxicological test using zebrafish. The synthesis of the nanoparticles was obtained using the chemical reduction method and the material was characterized by X-ray diffraction, Scanning Electron Microscopy (SEM), Energy-Dispersive X-Ray (EDX), and transmission electron microscopy and Specific Surface Area (BET). The results showed spherical forms in clusters between 20 to 40 nm of zero valent iron supported on diatomaceous earth. The removal of 1 g/l of AB from water treated with NZVI-DE-1 and NZVI-DE-2 reached the decolorization of 90% and 98% of all dye. While controls like NZVI and DE-1 and DE-2 achieved the removal of 40, 37 and 24 % of the dye. Toxicological analysis using zebrafish showed that AB causes a severe defect in development and embryos die after exposure. However, the water samples treated with NZVI-DE-1 and NZVI-DE-2 are not harmful for the zebrafish embryos during the first 24 hours. We conclude that the use of NZVI-DE-1 and NZVI-DE-2 is a promising treatment for dye pollution.

In this paper, we present a nonlinear PID controller based on saturation functions with variable parameters in order to regulate the output voltage of a buck converter in the presence of changes in the input voltage. The main feature of the proposed controller is to bound the control input with a variable parameter to avoid the windup effect generated by the combination of the integral control action and some operation conditions. The main advantages of the proposed nonlinear PID controller are its low computing cost and the simple tuning task to implement the control strategy in an embedded system. The acceptable behavior of the closed-loop system is presented through the simulation and experimental results.