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Search Results: 1 - 10 of 4791 matches for " Alfonso "
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Syncope and Hypoglycemia  [PDF]
Alfonso Lagi
International Journal of Clinical Medicine (IJCM) , 2011, DOI: 10.4236/ijcm.2011.22023
Abstract: Objective: This review focuses on syncope in diabetic patients who suffer from hypoglycemia. Clinically, transient loss of consciousness during hypoglycemia appears similar to vasovagal syncope. Research Design and Methods: Current understanding of this problem is based on physicians’ personal experiences as well as on published case reports. It is difficult to explain a temporary loss of consciousness as a result of hypoglycemia. Demonstration that hypoglycemia can be transient, with the patient suffering from neuroglycopenia without autonomic symptoms due to delayed counterregulation, might be a first step in confirming that a diabetic patient suffered from a transient loss of consciousness with spontaneous recovery. Results: Hypoglycemic syncope is uncommon, affecting 1.9% of diabetic patients using insulin therapy. It is characterized clinically by brief periods of unconsciousness with slow recovery and without loss of postural muscle tone. The difficulty in correlating loss of consciousness to hypoglycemia arises from mismatching symptoms, that is, there may be mental symptoms such as confusion, loss of memory or consciousness, in the absence of autonomic manifestations such as sweating or blurred vision. There are currently no established glucose values that define the level of hypoglycemia that causes loss of consciousness. Conclusion: Hypoglycemic syncope should be suspected in older diabetic patients with preserved postural tone, usually but not always using insulin therapy, who show a slow recovery from transient loss of consciousness with persisting neurological impairment and low blood glucose levels.
Carotid Sinus Hypersensibility: A Concept on the Way  [PDF]
Alfonso Lagi
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.41002
Abstract: This review examines the pathogenesis of Carotid Sinus Hypersensitivity (CSH) by describing the different hypotheses that exist in literature. One hypothesis is that CSH is not a disease of the heart but of the central and/or peripheral nerv- ous system where the heart is the victim. CSH is associated with cognitive disturbance, vasovagal syncope and ortho- static hypotension. Another hypothesis is that the CSH is considered a syndrome or a symptom associated with different diseases so as to require a diagnostic framework. This Hypothesis is the basis of frequent recurrences that are associated with the pacemaker implant therapy only.
Effect of Tantalum Doping on TiO2 Nanotube Arrays for Water-Splitting  [PDF]
Alfonso Pozio
Modern Research in Catalysis (MRC) , 2015, DOI: 10.4236/mrc.2015.41001
Abstract: This work is intended to define a new possible methodology for TiO2 doping through the use of electrochemical deposition of tantalum directly on the titanium nanotubes obtained by a previous galvanostatic anodization treatment in an ethylene glycol solution. This method does not seem to cause any influence on the nanotube structure, showing final products with news and interesting features with respect to the unmodified sample. Together with a decrease in the band gap and flat band potential of the TiO2 nanotubes, the tantalum doped specimen reports an increase of the photo conversion efficiency under UV light.
Power Generation with Vegetable Oils in the Italian Scenario: A 20 MW Case Study. Technical Feasibility Analysis and Economical Aspects  [PDF]
Alfonso Calabria, Roberto Capata
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.49070
Abstract: Nowadays the utilization of vegetable oils, particularly the palm oil, as fuel in the power plant, has made a significant development in the last few years. This vegetable oil can be used in particular in slow marine-derived diesel internal combustion engine (ICE), with an electric efficiency of about 40%. The efficiency is connected to the size of the power plant. Moreover, the considerable amount of the required vegetable oil to feed the system forces, especially in Italy, makes it necessary to import the fuel. This is the most critical element as the palm oil is subject to continuous variations in prices. Due to this variation it is difficult to stabilize a convenient fuel supply for a long period. The paper aims to evaluate and estimate the economic, technical and environmental feasibility of a 20 MW plant for the stationary power generation fed with palm oil, enlightening the system solution (technical constructive aspects) and the economic appraisal, on the basis of variations in oil prices. A comparison with a cogenerative power plant has been also carried out and, at last, the economic sensibility analysis based on the fuel cost and the European mechanisms of biomass incentives is performed.
Relativity Current Paradigm with Unresolved Anomalies  [PDF]
Alfonso Leon Guillen Gomez
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.56047

When a theory, as the general relativity, linked to special relativity, is foundation of a scientific paradigm, through normal science and academy, scientifics, professionals, professors, students and journals of that scientific community, the paradigm, it self-sustains and reproduces. Thus, the research is obligated and limited to apply the model existent of the paradigm to formulate problems and solve them, without searching new discoveries. This self-protection of the paradigm causes it to end its cycle of life, only after a long time, until that arise unresolved anomalies, some presents since origin, that they finally cause its change by other new paradigm. In this work, we study the most important anomalies that are part of the foundations of general relativity with the goal of promoting the call period of transition that is previous to scientific revolution. We use critical analysis method for rereading the general relativity, from the perspective of the history of science and philosophy of science. We find, the structural and complex anomaly of general relativity based on metaphysical spacetime that produces the metaphysics replaces physics. Also, two internal anomalies their direct consequences. These are: matter curves metaphysical spacetime, and metaphysical spacetime determines the geodesic motion of physical matter. We conclude that general relativity has no valid physical concept of spacetime, therefore of gravity. For these reasons, a new paradigm is needed.

Multiple Sequence Alignments as Tools for Protein Structure and Function Prediction
Alfonso Valencia
Comparative and Functional Genomics , 2003, DOI: 10.1002/cfg.313
Abstract: Multiple sequence alignments have much to offer to the understanding of protein structure, evolution and function. We are developing approaches to use this information in predicting protein-binding specificity, intra-protein and protein-protein interactions, and in reconstructing protein interaction networks.
Use of meta-analysis to combine candidate gene association studies: application to study the relationship between the ESR PvuII polymorphism and sow litter size
Leopoldo Alfonso
Genetics Selection Evolution , 2005, DOI: 10.1186/1297-9686-37-5-417
Abstract: (To access the full article, please see PDF)
Dispositivos de la globalización: la construcción de grandes proyectos urbanos en Ciudad de México
EURE (Santiago) , 2013, DOI: 10.4067/S0250-71612013000100004
Abstract: the territorial impact of globalization materializes with the construction of large urban projects, which serve as contact points within cities related to the circuits of capital. by means of a gramscian approach we use santa fe - a megaproject in the western part of mexico city - as a case study of a corporative development project inscribed in global hegemonic flows. building upon the concept of global devices to designate such projects, they become the urban space link to global capital. however, such devices operate at a different speed than the rest of the city, as instrument of a vertical economic power in the midst of a distant, impoverished and unrelated to globalflows horizontality.
Insuficiencia de los constructos psicológicos en la educación del altruismo
Educación y Educadores , 2010,
Abstract: studies dealing with altruism often approach the subject from psychological constructs such as memory, feelings, motivation or learning. very few deal with it from the standpoint of volition and virtue. this article attempts to link these concepts to that field of research in an effort to provide new keys for interpretation regarding education in altruism and for the design of teaching strategies in this field. some empirical evidence suggests that psychological constructs alone are insufficient to explain altruistic behavior and how it comes about. looking at volition and virtue as well provides a more comprehensive and instructive understanding of altruism as an objective in education.
Aportes a la construcción de la identidad profesional del profesor de teatro
Folios , 2012,
Abstract: abstract this paper contributes to the debate on knowledge construction and professional identity of the drama teacher. from information gathered in practical classes of the teacher training program in performing arts at the universidad pedagógica nacional and supported on an anthropological view of knowledge and the methodology of the joint didactic action theory, it argues that knowledge and identity processes are set in social planes, in which body, interactions and mediations focused on the body are instances that produce the sense of the professional endeavor.
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