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Search Results: 1 - 10 of 95559 matches for " Juan José;Landaverde "
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The number of families of Triatoma dimidiata in a Guatemalan house
Melgar, Sergio;Chávez, Juan José;Landaverde, Patricia;Herrera, Franklin;Rodas, Antonieta;Enríquez, Eunice;Dorn, Patricia;Monroy, Carlota;
Memórias do Instituto Oswaldo Cruz , 2007, DOI: 10.1590/S0074-02762007005000001
Abstract: triatoma dimidiata is an important vector of chagas disease in guatemala. to help understand the biology and population dynamics of the insect, we estimated the number of full sibling families living in one house. forty one families with an average size of 2.17 individuals were detected using random amplification of polymorphic dna-polymerase chain reaction genetic markers. this result suggests high levels of migration of the vector, polyandry, and a significant capability for spreading the disease.
Introducción de la vacuna conjugada contra Hib en Chile y Uruguay
Landaverde Mauricio,Di Fabio José Luis,Ruocco Gloria,Leal Irene
Revista Panamericana de Salud Pública , 1999,
Abstract: In some countries, the invasive disease caused by Haemophilus influenzae type b (Hib) has been practically eliminated thanks to vaccination. However, in much of the developing world, meningitides and pneumonias caused by these bacteria continue to be a major cause of childhood morbidity and mortality, as well as high hospitalization costs. Because safe and effective conjugate vaccines are now available, the Special Program for Vaccines and Immunization of the Pan American Health Organization has recommended introducing them into the regular vaccination regimen of as many countries as possible. This has been done in Chile and Uruguay, where the Hib vaccine now forms part of the regular vaccination routine. When the vaccine was being introduced, both countries had difficulties they could have avoided if they had known of the experiences of other nations. Therefore, these two countries now offer the lessons they learned to other nations considering introducing the vaccine into their immunization programs. The most important lessons were to: strengthen the epidemiological surveillance system sufficiently in advance of introducing the vaccine; with th support of sicentific societies, present the technical information that justifies introducing the vaccine; seek community backing and acceptance; precisely establish in advance the presentation and dosage of the vaccine that is most appropriate for the country; and be certain to have the political and legal decisions needed to ensure the continuity of Hib vaccination in the future.
FIBRILACIóN AURICULAR POR VíA ACCESORIA CON COMPORTAMIENTO INUSUAL / Atrial fibrillation due to an accessory pathway with an unusual behavior
Raimundo Carmona Puerta,Juan Miguel Cruz Elizundia,Jorge Roberto Landaverde Hernández
CorSalud , 2010,
Abstract:
Introducción de la vacuna conjugada contra Hib en Chile y Uruguay
Landaverde,Mauricio; Di Fabio,José Luis; Ruocco,Gloria; Leal,Irene; Quadros,Ciro de;
Revista Panamericana de Salud Pública , 1999, DOI: 10.1590/S1020-49891999000300022
Abstract: in some countries, the invasive disease caused by haemophilus influenzae type b (hib) has been practically eliminated thanks to vaccination. however, in much of the developing world, meningitides and pneumonias caused by these bacteria continue to be a major cause of childhood morbidity and mortality, as well as high hospitalization costs. because safe and effective conjugate vaccines are now available, the special program for vaccines and immunization of the pan american health organization has recommended introducing them into the regular vaccination regimen of as many countries as possible. this has been done in chile and uruguay, where the hib vaccine now forms part of the regular vaccination routine. when the vaccine was being introduced, both countries had difficulties they could have avoided if they had known of the experiences of other nations. therefore, these two countries now offer the lessons they learned to other nations considering introducing the vaccine into their immunization programs. the most important lessons were to: strengthen the epidemiological surveillance system sufficiently in advance of introducing the vaccine; with th support of sicentific societies, present the technical information that justifies introducing the vaccine; seek community backing and acceptance; precisely establish in advance the presentation and dosage of the vaccine that is most appropriate for the country; and be certain to have the political and legal decisions needed to ensure the continuity of hib vaccination in the future.
Distribution Pattern of Trees in a Hydrological Gradient below the Paraná-Paraguay River Confluence  [PDF]
Sylvina Lorena Casco, Juan José Neiff
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.43A085
Abstract:

Riparian and riverine aquatic plant species have evolved within the context of flowing water habitats for which the flooding and droughts are the forcing factors that shape the community features, either through a positive or negative effect on the ecosystem’s function, according to the timing, frequency and magnitude of such events. In the Paraná floodplain landscape, topographic position is a crude indicator of the position along the complex gradient, but it also includes information about flood/drought periods and trees’ resilience to extreme hydrological phases. We present the occurrence of major tree species in riparian forests of the Paraná River on islands of different topographies in a section of the Paraná River downstream from the confluence with the Paraguay River. Our results suggest that each tree species had a preferred position in the topographic gradient, sites where the observed counts were more frequent. This trees species were more frequent between 2 and 8 m in the topographic position and were affected by 5 and 202 hydrosedimentologic pulses between 1949 and 1999. We suggest that knowledge of the distribution curves of the vegetation species present can help draw possible future scenarios of the river landscape. Future engineering works to alter the hydrological dynamics of Paraná should pay more attention to the distribution of riparian forests because they are indicators of changes at the landscape level and they are the support for the wildlife of the river.

Brote de poliomielitis en Haití y la República Dominicana debido a un virus derivado de la vacuna antipoliomielítica oral
Landaverde,Mauricio; Venczel,Linda; Quadros,Ciro A. de;
Revista Panamericana de Salud Pública , 2001, DOI: 10.1590/S1020-49892001000400017
Abstract: in october 2000, the ministries of health of the dominican republic and haiti notified two cases of acute flaccid paralysis (afp) in rural areas, one of them in a 9-month-old female, and the other in a 2-year-old female, respectively. stool samples that were obtained from these cases, which occurred in july and august 2000, after a 9-year interruption of wild poliovirus circulation in the western hemisphere, revealed the presence of type 1 poliovirus. genetic sequencing, which was later performed at the centers for disease control and prevention, in atlanta, georgia, united states of america, revealed an atypical descendant of the virus used in the manufacture of the oral polio vaccine (opv), but with 3% genetic divergence with respect to the parent strain. normally, viral isolates that derive from vaccine components show 99.5% genetic agreement with the parent strain; in wild polioviruses, on the other hand, this agreement is usually less than 82.0%. thus, the 3% genetic divergence detected in this study suggests that, in areas with low vaccine coverage, the virus used in the vaccine remained in circulation for at least two years, during which it recovered the neurovirulence and communicability of wild poliovirus type 1. this report describes the characteristics and results of the active search for cases of afp that was sparked by the detection of the two index cases. it also looks at the public health implications of this outbreak for the entire region of the americas.
Brote de poliomielitis en Haití y la República Dominicana debido a un virus derivado de la vacuna antipoliomielítica oral
Landaverde Mauricio,Venczel Linda,Quadros Ciro A. de
Revista Panamericana de Salud Pública , 2001,
Abstract: In October 2000, the Ministries of Health of the Dominican Republic and Haiti notified two cases of acute flaccid paralysis (AFP) in rural areas, one of them in a 9-month-old female, and the other in a 2-year-old female, respectively. Stool samples that were obtained from these cases, which occurred in July and August 2000, after a 9-year interruption of wild poliovirus circulation in the Western Hemisphere, revealed the presence of type 1 poliovirus. Genetic sequencing, which was later performed at the Centers for Disease Control and Prevention, in Atlanta, Georgia, United States of America, revealed an atypical descendant of the virus used in the manufacture of the oral polio vaccine (OPV), but with 3% genetic divergence with respect to the parent strain. Normally, viral isolates that derive from vaccine components show 99.5% genetic agreement with the parent strain; in wild polioviruses, on the other hand, this agreement is usually less than 82.0%. Thus, the 3% genetic divergence detected in this study suggests that, in areas with low vaccine coverage, the virus used in the vaccine remained in circulation for at least two years, during which it recovered the neurovirulence and communicability of wild poliovirus type 1. This report describes the characteristics and results of the active search for cases of AFP that was sparked by the detection of the two index cases. It also looks at the public health implications of this outbreak for the entire Region of the Americas.
CONFIANZA: EL RETO PARA LAS CIENCIAS SOCIALES
Plata C,Juan José;
Revista de Derecho , 2009,
Abstract: the article presents a reflection on the role of social sciences in the modern world, highlighting the origins, principles and fundamentals that support it, allow us to target potential solutions in the current social conflict. to go to the above methodology between descriptive metaphors, knowledge and development.
Transvenous right ventricular pacing in a patient with tricuspid mechanical prosthesis
Juan Sierra, José Rubio
Journal of Cardiothoracic Surgery , 2008, DOI: 10.1186/1749-8090-3-42
Abstract: A 66 year-old woman was admitted to our hospital, because she had an episode of cardiovascular collapse requiring cardiopulmonary resucitation four days after cardiac operation in other hospital. The patient had previously undergone one closed and three open heart procedures. The first operation was a closed mitral surgery by a left thoracotomy. After nine years she needed new surgery because she had mitral stenosis and a mitral comisurotomy was done throught a sternotomy and under cardiopulmonary bypass. Ten years after the second operation, because she had mitral stenosis with extensive calcification of the anterior leaflet and aortic and tricuspid regurgitation, a double mitro-aortic valve replacement was done with two Bjork- Shiley (Shiley Inc – Irvine. CA, USA) prostheses. Also a De Vega tricuspid annuloplasty was performed. In 2002 symptoms of congestive heart failure, dyspnea and severe tricuspid insufficiency necessitated replacement of the tricuspid valve by a CarboMedics Prosthesis (CarboMedics Inc, Austin, Tex – USA). This operation was performed through right thoracotomy. The patient was discharged from the hospital one week later.Four days later, she was admitted to our hospital because she had an episode of cardiovascular collapse requiring cardiopulmonary resucitation. The physical examination was remarkable for elevated jugular venous pressure.Chest radiography revealed the presence of important bilateral pleural effusion and a right ventricle enlargement. The ECG showed atrial fibrillation with a ventricular rate of 35 beats/min. No Digoxin or Beta Blocker treatment was present.Transthoracic echocardiography demostrated a normal function of the three prosthesis and a decreased right ventricular function.The patient who was on an anticoagulant therapy with coumadin, was put on a regimen of heparin. After three days and to avoid a new thoracotomy(Fifth) a left ventricular pacing with an endocardial lead through the coronary sinus was performed. The st
Centro de Investigación e Interpretación ríos órbigo, Tera y Esla: Zamora, Espa?a
Barba,José Juan;
ARQ (Santiago) , 2009, DOI: 10.4067/S0717-69962009000200006
Abstract: due to their inherent instability, the floodable lands adjacent to rivers generally present insurmountable distances between themselves and their contiguous cities. this building, a center for the interpretation of rivers, is located in a high tide zone, rising in order to make way for the current, integrating it with its interior.
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