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Ciudad Victoria, Mexico

The Autonomous University of Tamaulipas is a Mexican public university based in Victoria, Tamaulipas. Throughout the larger cities of Reynosa, Matamoros, Nuevo Laredo, and Tampico and smaller cities of Ciudad Mante and Valle Hermoso are UAT campuses that offer undergraduate studies.Each of the various university faculties offer graduate studies leading to the Master's or Doctorate Degree. The Faculty of Medicine of Tampico offers the professional degree of Physician & Surgeon as well as post-graduate specialty certificates in: pediatrics, internal medicine, surgery, obstetrics & gynecology, family practice, and intensive care medicine.The university's "Center of Excellence" sponsors specialized professional certificates and studies for the state of Tamaulipas. Wikipedia.

Antonio-Lopez J.E.,National Institute of Astrophysics, Optics and Electronics | Castillo-Guzman A.,Autonomous University of Nuevo Leon | May-Arrioja D.A.,Autonomous University of Tamaulipas | Selvas-Aguilar R.,Autonomous University of Nuevo Leon | And 2 more authors.
Optics Letters | Year: 2010

We report on a wavelength-tunable filter based on multimode interference (MMI) effects. A typical MMI filter consists of a multimode fiber (MMF) spliced between two single-mode fibers (SMF). The peak wavelength response of the filter exhibits a linear dependence when the length of the MMF is modified. Therefore a capillary tube filled with refractive-index-matching liquid is used to effectively increase the length of the MMF, and thus wavelength tuning is achieved. Using this filter a ring-based tunable erbium-doped fiber laser is demonstrated with a tunability of 30 nm, covering the full C-band. © 2010 Optical Society of America. Source

Devesa-Rey R.,University of Vigo | Bustos G.,Autonomous University of Tamaulipas | Cruz J.M.,University of Vigo | Moldes A.B.,University of Vigo
Bioresource Technology | Year: 2011

The objective of this work was to study the entrapped conditions of activated carbon in calcium-alginate beads for the clarification of winery wastewaters. An incomplete 33 factorial design was carried out to study the efficiency of activated carbon (0.5-2%); sodium alginate (1-5%); and calcium chloride (0.050-0.900M), on the following dependent variables: colour reduction at 280, 465, 530 and 665nm. The activated carbon and calcium chloride were the most influential variables in the colour reduction. Nearly 100% colour reductions were found for the wavelengths assayed when employing 2% of activated carbon, 5% of sodium alginate and intermediate concentrations of calcium chloride (0.475M). Instead, other conditions like, 2% of activated carbon, 4% of sodium alginate and 0.580M of calcium chloride can also give absorbance reductions close to 100%. © 2011 Elsevier Ltd. Source

Jimenez-Andrade J.M.,University of Arizona | Jimenez-Andrade J.M.,Autonomous University of Tamaulipas | Mantyh P.W.,University of Arizona | Mantyh P.W.,Arizona Cancer Center | Mantyh P.W.,Research Service
Arthritis Research and Therapy | Year: 2012

Introduction: Although the prevalence of arthritis dramatically increases with age, the great majority of preclinical studies concerning the mechanisms that drive arthritic joint pain have been performed in young animals. One mechanism hypothesized to contribute to arthritic pain is ectopic nerve sprouting; however, neuroplasticity is generally thought to be greater in young versus old nerves. Here we explore whether sensory and sympathetic nerve fibers can undergo a significant ectopic nerve remodeling in the painful arthritic knee joint of geriatric mice.Methods: Vehicle (saline) or complete Freund's adjuvant (CFA) was injected into the knee joint of 27- to 29-month-old female mice. Pain behaviors, macrophage infiltration, neovascularization, and the sprouting of sensory and sympathetic nerve fibers were then assessed 28 days later, when significant knee-joint pain was present. Knee joints were processed for immunohistochemistry by using antibodies raised against CD68 (monocytes/macrophages), PECAM (endothelial cells), calcitonin gene-related peptide (CGRP; sensory nerve fibers), neurofilament 200 kDa (NF200; sensory nerve fibers), tyrosine hydroxylase (TH; sympathetic nerve fibers), and growth-associated protein 43 (GAP43; nerve fibers undergoing sprouting).Results: At 4 weeks after initial injection, CFA-injected mice displayed robust pain-related behaviors (which included flinching, guarding, impaired limb use, and reduced weight bearing), whereas animals injected with vehicle alone displayed no significant pain-related behaviors. Similarly, in the CFA-injected knee joint, but not in the vehicle-injected knee joint, a remarkable increase was noted in the number of CD68 +macrophages, density of PECAM +blood vessels, and density and formation of neuroma-like structures by CGRP +, NF200 +, and TH +nerve fibers in the synovium and periosteum.Conclusions: Sensory and sympathetic nerve fibers that innervate the aged knee joint clearly maintain the capacity for robust nerve sprouting and formation of neuroma-like structures after inflammation/injury. Understanding the factors that drive this neuroplasticity, whether this pathologic reorganization of nerve fibers contributes to chronic joint pain, and how the phenotype of sensory and sympathetic nerves changes with age may provide pharmacologic insight and targets for better controlling aging-related joint pain. © 2012 Mantyh et al.; licensee BioMed Central Ltd. Source

Antonio-Lopez J.E.,National Institute of Astrophysics, Optics and Electronics | May-Arrioja D.A.,Autonomous University of Tamaulipas | Likamwa P.,University of Central Florida
IEEE Photonics Technology Letters | Year: 2011

A fiber-optic liquid level sensor based on multimode interference (MMI) effects is proposed and demonstrated. We show that MMI and self-image effects can be effectively applied for multiplexed liquid level sensing, because the natural response as a band-pass filter for each sensor is clearly distinct from each other, in the case for several sensors working at the same time. Using a standard 105/125 step-index multimode fiber (MMF) a simple discrete level sensor was fabricated, that can also discriminate the refractive index (RI) of the liquid during the level measurement. The MMI liquid level sensors are not only inexpensive, but their fabrication is simple. © 2011 IEEE. Source

Euan R.,Autonomous University of Nuevo Leon | Figueras-Alvarez O.,Autonomous University of Nuevo Leon | Cabratosa-Termes J.,Autonomous University of Nuevo Leon | Oliver-Parra R.,Autonomous University of Tamaulipas
Journal of Prosthetic Dentistry | Year: 2014

Statement of problem Marginal adaptation is essential for the long-term success of dental restorations. Studies comparing the marginal gaps of computer-aided design/computer-aided manufacturing (CAD/CAM) restorations made from conventional and digital impressions are limited. Purpose The purpose of this study was to evaluate the marginal adaptation of zirconium dioxide copings made with 2 different CAD/CAM systems, the Lava All-Ceramic System (scanning definitive dies made with conventional impressions) and the Lava Chairside Oral Scanner (scanning directly from the prepared tooth). In addition, the influences of 2 different finish line configurations were also compared. Material and methods Forty human molar teeth were prepared to receive complete crowns. Twenty were prepared with a 90-degree round shoulder and the other 20 with a 45-degree chamfer finish line. Zirconium dioxide copings were fabricated by using CAD/CAM technology. The specimens were randomized; they included 10 teeth with round shoulder and 10 with chamfer finish lines with the Lava All-Ceramic System, and 10 teeth with round shoulder and 10 with chamfer finish lines with the Lava Chairside Oral Scanner. The marginal gaps were measured at 5 points on each side with stereomicroscopy at 40× magnification. Data were analyzed with 2-way ANOVA (α=.05). Results The mean values of the measured marginal gap for the round shoulder group were 52.66 μm with the Lava All-Ceramic System and 14.98 μm with the Lava Chairside Oral Scanner. The mean values for the chamfer group were 64.06 μm for the Lava All-Ceramic System and 18.45 μm for the Lava Chairside Oral Scanner. Differences were identified when the marginal gaps between the specimens with different CAD/CAM systems were compared. However, differences in the finish line design were identified only between the round shoulder and chamfer with the Lava All-Ceramic System. Conclusions Restorations fabricated with the Lava Chairside Oral Scanner displayed smaller marginal gaps than those made with the Lava All-Ceramic System. Nevertheless, all marginal gaps were within the range of clinical acceptability for both groups. Source

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