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Planning in cities deals with the most appropriated ways to implement improvements and development strategies, so that the population can be the most beneficiated. International agencies are urging to implement new policies and strategies in order to tackle the transportation emissions causing climate change. It is then considered important to analyze how much urban freight transport (UFT) has been...
TiO2-Pt photocatalysts have been synthesized by a sol—gel proccess microwave-assisted and characterized by means of several techniques (Scanning electron microscopy (SEM), powder X-ray diffraction (XRD), and Raman spectroscopic techniques) and used in the hydrogen generation under UV irradiation at room temperature. Crystals of anatase phase (size about 24 nm) was obtained, as confirmed by XRD. The...
Due to the environmental damage caused for the steel manufacture, an alternate material that is less harmful to the ambience is proposed. It consists of recycling aluminum from beverage cans by melting and remelting in a furnace creating a composite reinforced with carbon nanotubes to magnify the mechanical properties of strength and being able to use it structurally where the strength-self-weight...
The face segmentation is an important step for face recognition because it is not only locates the face but also get a correct segmentation for a fuller region possible. In this paper an application of the viscous opening along the skin color for segmentation and obtaining the limit of facial contour is presented. The proposal consists of two stages: the first one use the classification of pixels...
This paper proposes a solution for the problem of global trajectory tracking with a PD controller plus feedforward of rigid robots equipped with PMSM (Permanent Magnet Synchronous Motor) when the electric dynamics of these actuators are taken into account. Besides, here is replaced numerical differentiation by the high pass filter in the PD controller. Thus, we shown that proposed controller produces...
In this paper several methods for titanium dioxide (TiO2) synthesis are presented, the methods used were microwave assisted sol-gel, anodizing and plasma deposition, and these structures were also doped with Au. The obtained morphologies were characterized by Raman spectroscopy, scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and elemental analysis EDS, also its catalytic...
Improving the efficiency of the electricity usage is an important concern these days relaying on monitoring techniques mainly divided into two categories: the intrusive monitoring that is focused on measure the power consumption of each electrical load individually and the non-intrusive monitoring which measure the power consumption from a centralized point and determine which electrical loads are...
In Mexico, different traffic calming devices are being used. For highways, the federal government has issued some criteria for the installation and geometrical distribution of small buttons that cross the roads, particularly in descending slopes, willing to reduce, by 10%, the traffic speed. However, there is the perception that such devices do not effectively reduce the traffic speed. In this paper,...
Success in greenhouse production is due, in part, to the use of a well-characterized substrate and a suitable fertigation schedule, among others. The behavior of several mixtures of stone substrate (tezontle, pumice) with improvers (potassium acrylate copolymer and agave fiber) was evaluated in this research. The physical properties of the resultant mixtures, such as water- and air-retention, drainage...
Energy harvesting from vibrating systems represents an alternative for reducing pollution, fossil fuel consumption and other environmental externalities associated to road transportation. While a variety of technological schemes has been proposed for harvesting vibrational energy from vehicles, the resultant devices have not been competitive with other energy recovering systems such as regenerative...
The shrinkage phenomenon present in the elements made with Portland cement generates problems of cracking if this is restricted to bending stress, this causes aesthetic problems and eventually structural problems. Expansive cements exist in the market that reduce cracking but its economic value makes it uneconomical to use. This document discusses the volumetric behavior after setting and during early-age...
In the present study, the potential of fly larvae meal as a protein source for incorporation in a diet used in culture animals of the genus Macrobrachium is evaluated. Two experimental feeds were formulated based on meal larvae, with differences in protein content (25 and 35%); they were provided to individuals of the genus and compared opposite with two commercial foods with the same percentage of...
The emergence of Nanotechnology in Medicine has resulted in the development of a wide set of nanocarriers. One of the most popular approaches in drug delivery is the use of liposomes, which are self-assembled lipid bilayers. Mammalian-derived liposomes are known to be highly biocompatible. However, the toxicity of liposomes prepared with microbial lipids is still to be clarified. Strains from the...
Au-TiO2 photocatalyst have been synthetized by a microwave assisted sol-gel method and characterized by means of X-ray diffraction techniques (XRD) and UV-vis diffuse reflectance spectroscopy. Photoelectrocatalytic degradation of methyl red dye have been carried out and a 95% degradation was achieved.
Nile tilapia do not achieve the desired productivity in the semi-desert regions of Mexico, because of their temperature variations. Temperature needs to be regulated to obtain commercial weights in 6 months, as stated by governmental agencies. With the use of greenhouses it is not possible to maintain all year round the optimum water for tilapia production, thus the temperature effect needs to be...
The superior physicochemical and mechanical properties of polymer composites (PCs) can be attributed to the interfacial interaction between additives, such as ceramics, clays or metals; and the polymer matrix. In PCs, both additives and the polymeric matrix interact at a level that modifies the electromechanical properties. Firstly, the article offers an insight in literature reported modeling techniques...
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