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Search Results: 1 - 10 of 7225 matches for " HENRY; SERRANO "
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The effects of air pollution on respiratory health in susceptible populations: a multilevel study in Bucaramanga, Colombia
Rodriguez-Villamizar, Laura Andrea;Castro-Ortiz, Henry;Rey-Serrano, Juan Jose;
Cadernos de Saúde Pública , 2012, DOI: 10.1590/S0102-311X2012000400014
Abstract: we conducted a cohort study to investigate the association between exposure to three different levels of outdoor air pollution and incidence of respiratory symptoms in a population with chronic cardiovascular and respiratory disease. we accompanied 756 participants for a period of six months through the maintenance of a daily record of symptoms and clinic visits. the symptoms with highest incidence rates were sneezing and hacking cough. multivariate analysis showed that incidence of total symptoms was 60% and 74% lower in areas with medium and low levels of pollution compared to areas with high levels of pollution. these results suggest that negative respiratory effects occur at concentrations of particulate matter pm10 > 60ug/m3.
Plasmocitoma óseo Solitario
Franquelo Morales,Pablo; Valero Serrano,Beatriz; Syldor,Marc Henry; González Martínez,Félix;
Revista Clínica de Medicina de Familia , 2010, DOI: 10.4321/S1699-695X2010000300014
Abstract: chronic low back pain is a common reason for visiting the doctor and although in most cases it has a mechanical character, 1-5% are of neoplasic origin. solitary bone plasmacytoma is a rare plasma cell tumor located mainly in the spine, causing pain especially in the thoracic and lumbar region. we report the case of a 78 year old woman with chronic back pain and poems syndrome, in which a lytic bone image was found in a lumbar radiography corresponding to a solitary bone plasmacytoma confirmed by biopsy.
La legitimación como proceso en la violencia política, medios de comunicación y construcción de culturas de paz
Universitas Psychologica , 2009,
Abstract: this article examines the beliefs and social legitimacy as important elements in the emergence, maintenance and evolution of political violence and the role of the media and building cultures of peace. in this dynamic of armed conflict and peace, the discourses are constructed by social groups such as the structural changes that society needs to develop a culture of peace, so that the media play an important role, and functioning as a of the main tools that the armed (or out of state law) used to broadcast the speeches prepared in the framework of psychological operations whose purpose is to legitimize the violence engaged in combating the opponent.
Free Secondary Education and the Changing Roles of the Heads of Public Schools in Tanzania: Are They Ready for New Responsibilities?  [PDF]
Henry Godda
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.65001
This study investigated the management capacity of heads of public secondary schools in the implementation of Free Secondary Education (FSE) policy in Singida municipality. The study was descriptive research survey which employed both qualitative and quantitative research designs. Questionnaires and interviews were used to collect data from 200 teachers, 10 school heads and 5 municipal secondary education officers. The findings indicated that heads of public secondary schools in Singida municipality possessed managerial skills to run their schools effectively despite of being faced by several challenges, like inadequate funds to cater for some of the school needs, misconception by parents that FSE policy catered for all the fees and rapid increase of student enrollment. The findings further revealed that school heads use informal and formal coping strategies like community participation and informal peer coaching to manage the challenges of FSE.
High-frequency oscillatory ventilation and prone position as early alternative therapy in adults with severe acute respiratory distress syndrome
J Castedo, C Garcia, J Lorenzo, J Malaga, R Galvan, J Jimenez, J Iribarren, N Serrano, J Villegas, S Huidobro, C Henry, M Mora
Critical Care , 2006, DOI: 10.1186/cc4367
Abstract: To evaluate safety and results when using both HFOV and the prone position in adult patients in the early phase of severe ARDS as integrated therapy for alternative lung-protective ventilation.Adult patients diagnosed with ARDS resulting from a pulmonary cause (ARDSp) and from an extrapulmonary cause (ARDSe) receiving mechanical ventilation for less than 72 hours, when it is not possible for a conventional lung-protective strategy of low tidal volumes (≤ 6 ml/kg PBW) and limited inspiratory plateau pressures (≤ 30 cmH2O), requiring FiO2 ≥ 0.6 to keep PaO2 ≥ 60 mmHg or SpO2 ≥ 90% with moderate-high levels of mmHg PEEP in CMV and the prone position. Data are presented as the mean ± SD.We included in the study seven consecutive critically ill patients with early ARDS, four men and three women (five ARDSp/two ARDSe), aged 46.3 ± 20 years. APACHE-II score: 28.1 ± 4.8. LIS: 3.7 ± 0.2. OI: 35.6 ± 18.1. PaO2/FiO2: 88.6 ± 39.2. Patients were ventilated in the prone position and CMV with FiO2: 0.84 ± 0.2. Tidal volume: 6 ± 0.3 ml/kg PBW. Plateau pressure: 34.3 ± 2.1 cmH2O. Mean airway pressure: 25.9 ± 3.8 and PEEP: 17.1 ± 3.6 cmH2O.The patients were switched to HFOV in the prone position as alternative lung-protective ventilation. It was possible to apply higher mean airway pressures than in CMV and the prone position, to achieve significant and sustained improvements in gas exchange (PaO2/FiO2) and reductions in FiO2 requirements in the first 24 hours of HFOV without hemodynamic instability or barotrauma. Patients were turned back to the supine position in HFOV (mean time in prone position: 3.1 ± 1.5 days) before transition to CMV (mean time in HFOV: 5.6 ± 3.2 days).Two patients died in the first 2 days after being switched to HFOV, due to fulminant sepsis in Gram-negative bacteraemia and to massive alveolar haemorrhage in lupus, respectively. The other five patients were discharged alive from the ICU without ventilatory support. They are alive 3 months after diagnosis and t
Frequency of Toxocara canis Eggs in Public Parks of the Urban Area of Mexicali, B.C., Mexico
Luis Tinoco-Gracia,Alberto Barreras-Serrano,Gilberto Lopez-Valencia,Alma Rossana Tamayo-Sosa,Maryhelen Rivera-Henry,Esteban Quintana-Ramirez
Journal of Animal and Veterinary Advances , 2012,
Abstract: The aim of the present study was to determine the frequency of Toxocara canis eggs in public parks in the city of Mexicali, B.C., Mexico. A total of 32 parks were sampled and examined using the zinc sulphate flotation method. Association between the frequency of T. canis eggs and the socioeconomic status and level of education of neighborhoods where the parks are located were evaluated using chi-square test. Twenty public parks (62.5 %) resulted positive and 12 (37.5%) were negative to T. canis eggs. Moreover, parasite eggs of Strongyloides sp. Taenia sp. and Dipylidium caninum were found in 8 of the T. canis positive parks and in 5 of the 12 negative parks. Furthermore, 7 parks were found to be negative to any parasites eggs. When evaluating the association between the frequency of T. canis eggs and the socioeconomic status and level of education of neighborhoods were the parks are located, the highest frequency of T. canis eggs (83.3%) was found in parks of high-income neighborhoods and different (p = 0.059) of that in parks with low-middle income neighborhoods. The level of education of neighborhoods did not influence the frequency of T. canis eggs contamination. These findings show that T. canis eggs, the causative agent of visceral larva migrans, are highly present in public parks of the urban area of Mexicali, B.C., Mexico. To prevent the contamination of parks and prevent children from becoming infected with these parasite eggs, control measures are needed.
Efficient Theoretical Screening of Solid Sorbents for CO2 Capture Applications  [PDF]
Yuhua Duan, David Luebke, Henry Henry Pennline
International Journal of Clean Coal and Energy (IJCCE) , 2012, DOI: 10.4236/ijcce.2012.11001
Abstract: By combining thermodynamic database mining with first principles density functional theory and phonon lattice dynamics calculations, a theoretical screening methodology to identify the most promising CO2 sorbent candidates from the vast array of possible solid materials has been proposed and validated. The ab initio thermodynamic technique has the advantage of allowing identification of thermodynamic properties of CO2 capture reactions without any experimental input beyond crystallographic structural information of the solid phases involved. For a given solid, the first step is to attempt to extract thermodynamic properties from thermodynamic databases and the available literatures. If the thermodynamic properties of the compound of interest are unknown, an ab initio thermodynamic approach is used to calculate them. These properties expressed conveniently as chemical potentials and heat of reactions, which obtained either from databases or from calculations, are further used for computing the thermodynamic reaction equilibrium properties of the CO2 absorption/desorption cycles. Only those solid materials for which lower capture energy costs are predicted at the desired process conditions are selected as CO2 sorbent candidates and are further considered for ex- perimental validations. Solid sorbents containing alkali and alkaline earth metals have been reported in several previous studies to be good candidates for CO2 sorbent applications due to their high CO2 absorption capacity at moderate work- ing temperatures. In addition to introducing our computational screening procedure, in this presentation we will sum- marize our results for solid systems composed by alkali and alkaline earth metal oxides, hydroxides, and carbonates/bicarbonates to validate our methodology. Additionally, applications of our computational method to mixed solid systems of Li2O with SiO2/ZrO2 with different mixing ratios, our preliminary results showed that increasing the Li2O/SiO2 ratio in lithium silicates increases their corresponding turnover temperatures for CO2 capture reactions. Overall these theoretical predictions are found to be in good agreement with available experimental findings.
Preimplantational genetic diagnosis: an actual alternative with future implications
Claudia Juliana Serrano Serrano
MedUNAB , 2005,
Abstract: Preimplantational genetic diagnosis (PGT) isa new technique, promoted as an alternative for prenatal diagnosisand eventually for the voluntary termination of pregnancy whenthe couple is willing . Essentially, they are afraid that a geneticdisease may be transmitted to their descendents. After the assistedreproduction techniques have been applied, an embryo biopsy isconducted, extracting two of the blastomeres, which are geneticallyanalyzed. Those embryos free from genetic diseases are implantedin the mother uterus. PGT has also allowed the medical communityto study different aspects of the early embryo development andthe comprehension of reproductive genetics. However these newtechniques have given rise to many ethical questions and debatesabout the moral consequences of routinely practicing PGT.
The nature of neuronal words and language  [PDF]
Morris Henry Baslow
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.23032
Abstract: Individual neurons in the brain possess natural language in the form of energy-dependent ac-tion potentials or spikes (S) operating on a mil-lisecond timescale that, along with pauses (P) between spikes, constitute a two letter (S, P) “alphabet” that is used to generate meaningful frequency-encoded neuronal “words”. These words are then used to transmit information to other neurons in the form of phrases consisting of two or more words that are contained within longer pause-delineated structured declarative sentences. In this article, the nature of neuronal words and language are described, and exam-ples provided that illustrate the way in which neuronal language is used by the brain to in-teract with and interpret both its internal and external environments. It is hoped that a fuller understanding of the language used by neurons to communicate may lead to development of novel treatments for a number of human neu-ropathies.
Water Myths: The Illusion of Canada’s Endless Water Supply  [PDF]
Henry Gordon-Smith
Journal of Water Resource and Protection (JWARP) , 2012, DOI: 10.4236/jwarp.2012.410093
Abstract: This paper explores the common misconception that Canada has an infinite supply of freshwater. The true amount of water availability in Canada is explored, and the location of the majority of Canada’s water supply is described. As a consequence of a more precise assessment of Canada’s actual hydrologic situation the paper seeks to dash the dangerous myth of Canada’s water inexhaustibility, which is straining the country’s precious resource increasingly. Finally, this paper discusses the major threats to Canada’s water supply, which are from both external factors as well as its internal sociopolitical weakness. A solution to these problems is considered.
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