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Stop-motion: comunicación, creación y diversión
J. Daniel García Martínez
Caracteres : Estudios Culturales y Críticos de la Esfera Digital , 2012,
Abstract: Could media be used to work on language competence? In this article I will defend the comprehension process as a General Cognitive Skill and based on this I will show how I used that idea to work with my students at school, Agora Portals International School, with a visual technique called stop-motion. The results were amazing.
Synthesis and in Vitro Antioxidant Activity Evaluation of 3-Carboxycoumarin Derivatives and QSAR Study of Their DPPH? Radical Scavenging Activity
Francisco J. Martínez-Martínez,Rodrigo Said Razo-Hernández,Ana Lilia Peraza-Campos,Manuel Villanueva-García,Maria Teresa Sumaya-Martínez,Daniel Jaramillo Cano,Zeferino Gómez-Sandoval
Molecules , 2012, DOI: 10.3390/molecules171214882
Abstract: The in vitro antioxidant activities of eight 3-carboxycoumarin derivatives were assayed by the quantitative 1,1-diphenyl-2-picrylhydrazil (DPPH?) radical scavenging activity method. 3-Acetyl-6-hydroxy-2H-1-benzopyran-2-one (C1) and ethyl 6-hydroxy-2-oxo-2H-1-benzopyran-3-carboxylate (C2) presented the best radical-scavenging activity. A quantitative structure-activity relationship (QSAR) study was performed and correlated with the experimental DPPH? scavenging data. We used structural, geometrical, topological and quantum-chemical descriptors selected with Genetic Algorithms in order to determine which of these parameters are responsible of the observed DPPH? radical scavenging activity. We constructed a back propagation neural network with the hydrophilic factor (Hy) descriptor to generate an adequate architecture of neurons for the system description. The mathematical model showed a multiple determination coefficient of 0.9196 and a root mean squared error of 0.0851. Our results shows that the presence of hydroxyl groups on the ring structure of 3-carboxy-coumarins are correlated with the observed DPPH? radical scavenging activity effects.
Exactly Solvable Schr?dinger Equation with Hypergeometric Wavefunctions  [PDF]
J. Morales, J. García-Martínez, J. García-Ravelo, J. J. Pe?a
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.311173
Abstract: In this work, the canonical transformation method is applied to a general second order differential equation (DE) in order to trasform it into a Schr?dinger-like DE. Our proposal is based on an auxiliary function g(x) which determines the transformation needed to find exactly-solvable potentials associated to a known DE. To show the usefulness of the proposed approach, we consider explicitly their application to the hypergeometric DE with the aim to find quantum potentials with hypergeometric wavefunctions. As a result, different potentials are obtained depending on the choice of the auxiliary function; the generalized Scarf, Posh-Teller, Eckart and Rosen-Morse trigonometric and hyperbolic potentials, are derived by selecting g(x) as constant and proportional to the P(x) hypergeometric coefficient. Similarly, the choices g(x)~P(x)/x2 and g(x)~x2/P(x) give rise to a class of exactly-solvable generalized multiparameter exponential-type potentials, which contain as particular cases the Hulthén, Manning-Rosen and Woods-Saxon models, among others. Our proposition is general and can be used with other important DE within the frame of applied matematics and physics.
Pbca-type In2O3: the lost pressure-induced post-corundum phase
Braulio García-Domene,Juan A. Sans,óscar Gomis,Francisco J. Manjón,Henry M. Ortiz,Daniel Errandonea,David Santamaría-Pérez,Domingo Martínez-García,Rosario Vilaplana,André L. J. Pereira,ángel Morales-García,Plácida Rodríguez-Hernández,Alfonso Mu?oz,Catalin Popescu,Alfredo Segura
Physics , 2013,
Abstract: Contradictory results of high-pressure studies in cubic bixbyite-type indium oxide (c-In2O3) at room temperature (RT) have motivated us to perform high-pressure powder x-ray diffraction and Raman scattering measurements in this material. On increasing pressure c-In2O3 undergoes a transition to the Rh2O3-II structure. On decreasing pressure Rh2O3-II-type In2O3 undergoes a transition to a previously unknown phase which is isostructural to Rh2O3-III. On further decrease of pressure, another phase transition to corundum-type In2O3, which is metastable at room conditions, is observed. Recompression of metastable corundum-type In2O3 shows that the Rh2O3-III phase is the post-corundum phase. Our results are supported by theoretical ab initio calculations which show that the Rh2O3-III phase could be present in other sesquioxides, thus leading to a revision of the pressure-temperature phase diagrams of sesquioxides.
Atypical Variations of Water Conductivity Prior to Tectonic Earthquakes  [PDF]
Fidel Martínez-García, Arturo Colín-Cruz, Salvador Adame-Martínez, Jorge J. Ramírez-García
International Journal of Geosciences (IJG) , 2015, DOI: 10.4236/ijg.2015.612108
Abstract: Within the framework of precursor events related to earthquakes, this paper analyzes the possible effect on the aquatic environment of the surrounding energy that accompanies earthquakes, particularly in the area where oceanic and continental plates collide (Cocos Plate and North American Plate, south of Mexico). As a preamble, the types of precursor events, characteristics, and their possible origin are described. A project was designed under the assumption that in areas with high frequency and intensity seismicity there is an electrical and electromagnetic potential promoter which is detectable and assessable indirectly by measuring water conductivity behavior, which also may have atypical variations of data; the outcome of intensive conductivity monitoring in different settings, natural as well as manmade (wellsprings, artesian well and a cistern), are presented herein. The results of the conductivity monitoring for seven months, highlight two patterns in data behavior: one pattern shows the subtle dependence of data behavior on the geographic location of data monitoring instruments, revealing that could have a slight relationship between areas with increased seismic frequency and intensity and the presence of atypical conductivity variations. Another pattern reveals the possible relationship between atypical variations in conductivity and subsequent earthquake events; a total of 241 seismic events were analyzed and 59 of them are provided as evidence related with patterns mentioned.
Percutaneous Ultrasound-Guided Radiofrequency Thermal Ablation for Treatment of Uterine Fibroids  [PDF]
Raúl García Marcos, Javier Monleón, Alicia Martínez-Varea, Fernando Gómez, Guillermina Montoliú, Jose J. Martínez, Luis Martí-Bonmatí, Antonio Pellicer
Open Journal of Obstetrics and Gynecology (OJOG) , 2014, DOI: 10.4236/ojog.2014.412100
Abstract:

Purpose: To assess the safety, efficacy and effectiveness of percutaneous radiofrequency (RF) thermal ablation to reduce symptoms of uterine fibroids. Materials and Methods: 17 premenopausal women with symptomatic uterine fibroids despite conventional medical treatment were included. The assessment of symptoms and characteristics of fibroids by vaginal ultrasound, magnetic resonance imaging (MRI) and contrast enhanced ultrasound (CEUS) was performed before starting treatment and 6 months after the procedure. Successful treatment was clinically considered if patients reported a reduction in symptoms 6 months after RF myolysis. Successful treatment was also considered if the necrosis of the fibroid was greater than 50%, 6 months after treatment. Results: The baseline score on visual analogue scale (VAS) for dysmenorrhea and intermenstrual pain was 5.76 ± 3.31 and 3.0 ± 3.4, respectively. According to a score of 0 - 3, baseline bleeding during menstruation was 2.29 ± 0.92. Six months after RF myolysis, the VAS for dysmenorrhea was 2.75 ± 3.32 (p = 0.004), whereas for intermenstrual pain it was 1.38 ± 2.56 (p = 0.02). Menstrual bleeding was reduced to 1.13 ± 0.89 (p = 0.005). Clinical success of the treatment was evident in 11 (64.7%) of the 17 patients with a 95% CI [38.6%, 84.7%]. Fourteen patients underwent MRI monitoring 6 months post-myolysis. Compared to baseline fibroid volume, ultrasound and MRI volume were 57.38% and 79.66% six months after surgery, respectively. A total of 13 patients (92.86%) had radiological success from the treatment (95% CI [64.2%, 99.6%]). Conclusion: Since percutaneous RF myolysis reduces volume and symptoms of uterine fibroids, it may be considered as a valid treatment for symptomatic fibroids.

Microangiopathic Hemolytic Anemia and Diffuse Bone Metastasis by Signet Ring Cell Adenocarcinoma  [PDF]
Andrés J. Mu?oz Martín, Pilar García Alfonso, María Carmen Riesco Martínez, Virginia Martínez Marín, Yolanda Jerez Gilarranz, Rebeca Mondejar Solís, Miguel Martín Jiménez
Journal of Cancer Therapy (JCT) , 2010, DOI: 10.4236/jct.2010.12016
Abstract: Microangiopathic hemolytic anemia (MAHA) is a rare paraneoplastic syndrome and is typically associated with gastric adenocarcinoma. We report a 47-year-old woman who presented with asthenia, lower back pain and bleeding. Twelve years ago the patient underwent total gastrectomy due to gastric adenocarcinoma and achieved complete remission. The patient was diagnosed with MAHA and diffuses bone metastasis of signet ring cell adenocarcinoma of unknown origin and was treated successfully with polichemotherapy based on cisplatin and 5-fluorouracil.x
Establecimiento de indicadores de sostenibilidad para entornos degradados: el Valle minero de Laciana (León, Espa a)
García Navarro, J.,Maestro Martínez, L.,Huete Fuertes, R.,García Martínez, A.
Informes de la Construccion , 2009,
Abstract: The interaction among building, environment, and socioeconomic matters, results in impacts as complex as the building process itself. A straight analysis of these impacts or effects must consider the whole building life-cycle, building products and building components. Also impacts are found in every level; from a local level, for example, the fingerprints a quarry leaves on the landscape, to a global level, i.e. CO2 emissions due to energy consumption used to reach wealthy indoor conditions. Every impact must be considered differently in every level and phase. In the last years, indicator sets are drawn as appropriate tools in assessment methods for products, processes or activities. Nevertheless, the building process involves other singularities to be considered. Within the framework of the R&D National Plan Program, the project titled “Model of sustainable construction for the rehabilitation and protection of environmentally degraded or fragile zones: the Mining Valley of Laciana” (García Navarro et al., 2005-2007) has developed a model following the sustainability criteria in construction, for buildings, existing infrastructures and landscapes in mining regions. This paper analyzes the application of indicator sets in this type of scenarios, and provides practical recommendations in order to develop integrating models or guidelines in the assessment, planning and management of these interventions. La interacción entre los edificios, el medio ambiente y su entorno socioeconómico, así como los impactos que resultan de la misma es algo tan complejo como el propio proceso constructivo. Un análisis riguroso de las afecciones producidas por la actividad edificatoria debe tener en cuenta el ciclo de vida completo, tanto del edificio como de sus productos y componentes. En cada fase, el impacto se produce en todos los niveles; desde un nivel local, como por ejemplo la huella que produce una cantera, a un nivel global, como las emisiones de dióxido de carbono producido por el consumo de combustible para el acondicionamiento de los recintos. Por ello, para un mismo impacto, se trabaja con diferentes escalas. El establecimiento de un sistema de indicadores se ha configurado en los últimos a os como un método de evaluación común de un producto, proceso o actividad. No obstante, el proceso constructivo presenta singularidades que es necesario considerar. En el marco del proyecto de investigación del Plan Nacional I+D+i 2004-2007 “Modelo de construcción sostenible para la recuperación y protección de zonas medioambientalmente degradadas o frágiles: el Valle de La
Utility of C-Reactive Protein and Procalcitonin for Detecting Bloodstream Infection in Patients with HIV/AIDS  [PDF]
Arianna Castillo Marshall, Tersilia García Castellanos, Isabel Martínez Motas, Daniel Salazar Rodriguez, María Eugenia Toledo Romaní, Jorge Pérez ávila
World Journal of AIDS (WJA) , 2014, DOI: 10.4236/wja.2014.43033
Abstract:

Human immunodeficiency virus (HIV) infected persons, are at high risk for developing a bloodstream infection. In order to evaluate the usefulness of C-reactive protein (CRP) and procalcitonin (PTC) in the detection of bloodstream infection in HIV, a case-control study was conducted from February to December 2012. PCT and CPR levels were measured in 2 groups. PCT concentrations were measured by the VIDAS® Brahms PCT assay, and CRP concentrations were determined by CRP latex. Values were calculated for both biomarkers and discriminative ability of PCT and CRP was analyzed using ROC curves. There were no significant differences between the study group and the control groups with respect to CRP levels. However, they were much higher PCT levels in patients with bacteremia. PCT showed greater discriminating ability compared to CRP, and proved to be a valuable tool for the detection of systemic bacterial infections in HIV infected patients.

Triple asociación: espondiloartropatía seronegativa de inicio tardío, enfermedad de Paget y arteritis de células gigantes
Cobeta García,J. C.; Martínez Burgui,J.;
Anales de Medicina Interna , 2001, DOI: 10.4321/S0212-71992001000100008
Abstract: the diagnosis of several rheumatic diseases in oneself patient is frequent in practice. however, some associations are exceptional and their recognition is important for a correct treatment and prognostic. we present the case of an old patient in who we diagnose a late onset seronegative spondylarthropathy and a paget′s disease and that later it developed a giant cells arteritis. the association of ankylosing spondylitis with paget′s disease or with polymyalgia rheumatica, it has already been described in the literature, but our patient's triple association we have not found it.
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