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Search Results: 1 - 10 of 461891 matches for " A; Franjola "
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Primer registro en Chile de Antarctophthirus microchir (Anoplura) en lobo marino común (Otaria flavescens)
Crovetto,A; Franjola,R; Silva,R;
Archivos de medicina veterinaria , 2008, DOI: 10.4067/S0301-732X2008000300013
Abstract: the ectoparasitic fauna associated to marine mammals is scarcely known in chile. this report deals with a sample of anoplura parasites collected from adult and juvenile otaria flavescens, the southern sea lion, at the los lagos region, chile. the anoplura were taxonomically determined using the existent keys and they were subsequently described. this is the first record of antarctophthirus microchir in chile which, together with what is already known about the geographical distribution and the world evolutionary history of the otariidae, could represent another evidence of the monophyly of the northern and southern hemisphere otariidae groups.
Primer registro en Chile de Antarctophthirus microchir (Anoplura) en lobo marino común (Otaria flavescens) First record of Antarctophthirus microchir (Anoplura) in the southern sea lion (Otaria flavescens) in Chile
A Crovetto,R Franjola,R Silva
Archivos de medicina veterinaria , 2008,
Abstract: Los ectoparásitos de los mamíferos marinos en Chile son poco conocidos. Se recolectaron individuos en animales adultos y jóvenes de una lobería reproductiva de lobo marino común (Otaria flavescens) en Isla Metalqui, de la Región de Los Lagos, Chile. Se identifican y describen los especímenes de Anoplura apoyado en claves existentes. Dicha descripción y la comparación con la evolución y distribución de la familia Otariidae en el mundo nos permite concluir que Antarctophthirus microchir es una especie descrita por primera vez en Chile y podría representar una posible evidencia de un origen monofilético de los grupos de Otariidae en los hemisferios norte y sur. The ectoparasitic fauna associated to marine mammals is scarcely known in Chile. This report deals with a sample of Anoplura parasites collected from adult and juvenile Otaria flavescens, the southern sea lion, at the Los Lagos Region, Chile. The Anoplura were taxonomically determined using the existent keys and they were subsequently described. This is the first record of Antarctophthirus microchir in Chile which, together with what is already known about the geographical distribution and the world evolutionary history of the Otariidae, could represent another evidence of the monophyly of the northern and southern hemisphere Otariidae groups.
Acaros del polvo de habitaciones enla ciudad de Punta Arenas, Chile
Franjola T,René; Rosinelli M.,Dino;
Boletín chileno de parasitología , 1999, DOI: 10.4067/S0365-94021999000300008
Abstract: in medicine, the importance of mites in house dust gains importance from day to day. the close relation between these arthropods and man is the cause of a series of health problems such as allergic asthma, rhinitis and/or dermatitis. house dust samples were collected between january and december 1991 in punta arenas, city, chile. samples were processed by the artigas and casanueva (1983) technique, modified by mu?oz et al. (1983). the isolated specimens were subsequently identified using the artigas and casnueva (1983) pictorial key. of the 134 samples studie, 29.1% presented one or more mite species. a total of 13 species were classified. eight of them were registered for the city of punta arenas for the first time. average weight of the dust analysed was 8.4 g. mites were found from 0.2 g. onwards. a total of 1768 specimens was collected. the species more representative were: blomia tjibodas (30.1%), glycyphagus destructor (22.5%) and tyrophagus putrescentiae (10.8%). the seasons that presented the higher proportions of mites were autumm (39.4%) and spring (37.1%).
Acaros del polvo de habitaciones enla ciudad de Punta Arenas, Chile Minas of the house dust from Punta Arenas city, Chile
René Franjola T,Dino Rosinelli M.
Boletín chileno de parasitología , 1999,
Abstract: In medicine, the importance of mites in house dust gains importance from day to day. The close relation between these arthropods and man is the cause of a series of health problems such as allergic asthma, rhinitis and/or dermatitis. House dust samples were collected between January and December 1991 in Punta Arenas, city, Chile. Samples were processed by the Artigas and Casanueva (1983) technique, modified by Mu oz et al. (1983). The isolated specimens were subsequently identified using the Artigas and Casnueva (1983) pictorial key. Of the 134 samples studie, 29.1% presented one or more mite species. A total of 13 species were classified. Eight of them were registered for the city of Punta Arenas for the first time. Average weight of the dust analysed was 8.4 g. Mites were found from 0.2 g. onwards. A total of 1768 specimens was collected. The species more representative were: Blomia tjibodas (30.1%), Glycyphagus destructor (22.5%) and Tyrophagus putrescentiae (10.8%). The seasons that presented the higher proportions of mites were autumm (39.4%) and spring (37.1%).
Blastocistosis y otras infecciones por protozoos intetinales en comunidades humanas ribere?as de la cuenca del rio Valdivia, Chile
Torres, Patricio;Miranda, Juan C.;Flores, Luisa;Riquelme, Javier;Franjola, René;Perez, José;Auad, Sadi;Hermosilla, Claudia;Riquelme, Samuel;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1992, DOI: 10.1590/S0036-46651992000600010
Abstract: between march and october 1987, the prevalence of infection by blastocystis hominis and other intestinal protozoan, their relationship with the age and sex of the hosts, and the percentage of in fected persons in family groups were determined in riverside communities of valdivia river basin, chile. one or more intestinal protozoan species were determined in 72.5% of the examined persons. the prevalence was greater for b. hominis (61.8%). the prevalences of b. hominis, endolimax nana and entamoeba coli were greater in relation to the age of the host. the sex of the host and prevalence of infections by b. hominis and other species of intestinal protozoans did not show association. prevalence of b. hominis was greater in persons from houses with no sanitary faeces disposal. over 60% of the members of family groups showed infection by b. hominis in 53.1% of the groups compared to 2.4%-21.8% of infections by other protozoan species. faecal samples of 45 pigs revealed 22.2% of infection by blastocystis.
Epidemiología de la difilobotriasis en la cuenca del río Valdivia, Chile
Torres,Patricio; Franjola,René; Pérez,José; Auad,Sadi; Uherek,Fernando; Miranda,Juan C.; Flores,Luisa; Riquelme,Javier; Salazar,Samuel; Hermosilla,Claudia; Rojo,Rubén;
Revista de Saúde Pública , 1989, DOI: 10.1590/S0034-89101989000100007
Abstract: in the valdivia (chile) river basin 1,295 inhabitants of 6 riverside districts were examined between march and october 1987 and showed a 1.2% of prevalence by diphyllobothrium in the districts of ri?ihue and las huellas. prevalence of 5.3% and 9.8% respectively were registered in dogs of the districts of ri?ihue and malihue. no cat or pig infection was observed in the different districts. the parasites recovered after the treatment were identified as diphyllobothrium latum. human infection by d. latum in the districts affected results from the consumption of smoked or insufficiently cooked fish. the investigation of 1,450 fish (4 exotic species and 11 autochthonous ones), caught in the valdivia river basin in 1986 and 1987, showed the existence of plerocercoids of d. latum and/or diphyllobothrium dendriticum in salmo gairdneri and salmo trutta among exotic fish and in some autochthonous species. prevalence and mean intensity in the infection of fish as well as the degree of aggregation in the infrapopulations varied in the different districts. some species of fish would act as intermediary hosts and others as paratenic hosts in the life cycles of diphyllobothrium spp. in the valdivia river basin. an improvement in the conditions of basic sanitation, in sanitary education and in the treatment of infected persons is proposed as a means for the control of diphyllobothriasis in the districts affected.
The Spread of Infectious Disease on Network Using Neutrosophic Algebraic Structure  [PDF]
A. Zubairu, A. A. Ibrahim
Open Journal of Discrete Mathematics (OJDM) , 2017, DOI: 10.4236/ojdm.2017.72009
Abstract: Network theory and its associated techniques has tremendous impact in various discipline and research, from computer, engineering, architecture, humanities, social science to system biology. However in recent years epidemiology can be said to utilizes these potentials of network theory more than any other discipline. Graph which has been considered as the processor in network theory has a close relationship with epidemiology that dated as far back as early 1900 [1]. This is because the earliest models of infectious disease transfer were in a form of compartment which defines a graph even though adequate knowledge of mathematical computation and mechanistic behavior is scarce. This paper introduces a new type of disease propagation on network utilizing the potentials of neutrosophic algebraic group structures and graph theory.
A Comparative Investigation of Lead Sulfate and Lead Oxide Sulfate Study of Morphology and Thermal Decomposition  [PDF]
S. A. A. Sajadi
American Journal of Analytical Chemistry (AJAC) , 2011, DOI: 10.4236/ajac.2011.22024
Abstract: The compound lead oxide sulfate PbSO4.PbO was prepared in our laboratory. The Thermal behavior of PbSO4 was studied using techniques of Thermogravimetry under air atmosphere from 25 to 1200°C. The identity of both compounds was confirmed by XRD technique. Results obtained using both techniques support same decomposition stages for this compound. The electron microscopic investigations are made by SEM and TEM. The compound is characterized by XRD and the purity was determined by analytical Methods. Also a series of thermogravimetric analysis is made and the ideal condition is determined to convert this compound to pure lead oxide.
Metal ion-binding properties of L-glutamic acid and L-aspartic acid, a comparative investigation  [PDF]
S. A. A. Sajadi
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.22013
Abstract: A comparative research has been developed for acidity and stability constants of M(Glu)1, M(Asp)2 and M(Ttr)3 complexes, which have been determined by potentiometric pH titration. Depending on metal ion-binding properties, vital differences in building complex were observed. The present study indicates that in M(Ttr) com-plexes, metal ions are arranged to the carboxyl groups, but in M(Glu) and M(Asp), some metal ions are able to build chelate over amine groups. The results mentioned-above demonstrate that for some M(Glu) and M(Asp) complexes, the stability constants are also largely determined by the affinity of metal ions for amine group. This leads to a kind of selectivity of metal ions, and transfers them through building complexes accompanied with glutamate and aspartate. For heavy metal ions, this building complex helps the absorption and filtration of the blood plasma, and consequently, the excursion of heavy metal ions takes place. This is an important method in micro-dialysis. In this study the different as-pects of stabilization of metal ion complexes regarding to Irving-Williams sequence have been investigated.
Determining the Basaltic Sequence Using Seismic Reflection and Resistivity Methods  [PDF]
A. Alanezi, A. Qadrouh
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.32B004
Abstract:

This study was carried out in Harat Rahat (south of Almadinah Almonwarah) using seismic reflection and resistivity methods. The main objectives of this study are to determine the extent of the basaltic layer and to define the subsurface faults and fractures that could affect and control the groundwater movement in the study area. A 2D seismic profile was acquired and the result shows that the subsurface in the study area has a major fault. We obtained a well match when the seismic result was compared with drilled wells. As a complementary tool, the resistivity method was applied in order to detect the groundwater level. The results of the resistivity method showed that six distinct layers have been identified. The interpretation of these six layers show that the first three layers, the fourth layer, the fifth layer and the bottom of the section indicated various subsurface structures and lithologies; various basaltic layers, fractured basalt, weathered basement and fresh basaltic layers, respectively. It is obvious that the eventual success of geophysical surveys depend on the combination with other subsurface data sources in order to produce accurate maps.

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