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Search Results: 1 - 10 of 367425 matches for " R. Gabriela; Mu?oz E "
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Detección de los cambios Fenotípicos en productos de Ratas Long Evans infectadas con Trichinella spiralis y tratadas con Albendazol
Chávez Guajardo,Elsa Gabriela; Morales Vallarta,Mario R; Saldivar Elías,Sergio J; Reveles Hernández,R. Gabriela; Muoz E,José Jesús; Moreno García,María Alejandra;
Archivos Venezolanos de Farmacología y Terapéutica , 2010,
Abstract: trichinella spiralis is one of the causative agents of the trichinellosis, is a zoonosis of world-wide distribution, affects to big number of mammals like this as to the human. in mexico the main cause of infection associate with the consumption of pig infected meat with t. spiralis. in this work detected the phenotypical changes in long evans rats products infected with trichinells spiralis and threated with albendazol medication. use rats cepa long evans ina reproductive age. divided in groups, included controls and with treatment varying of one to fourteen days of treatment, to synchronize the management in the rats realized vaginal.smears for the detection of the parasites used direct techniques of understanding in plate and artificial digestion and the indirect technician of miid, for the phenotypical changes of baby rats obtained realized a detailed analysis with stereoscopic microscope.
Efecto del Albendazol en ratas Long Evans gestantes e infectadas con T. spiralis
Chávez Guajardo,Elsa Gabriela; Morales Vallarta,Mario R; Saldivar Elías,Sergio J; Reveles Hernández,R. Gabriela; Muoz E,José Jesús; Moreno García,María Alejandra;
Archivos Venezolanos de Farmacología y Terapéutica , 2010,
Abstract: the albendazol is the antihelmintic of first election for several parasitism, among them trichinellosis, nevertheless, the time of treatment must be per prolonged periods. the aim of this work was to determine the effect of this medicine on long rats evans pregnant and infected with t. spiralis. we synchronize the rats to develop them and to infect them, the treatment went of one to fourteen days, used the hematoxilina-eosin technique to verify the effect on the liver and the reproductive apparatus and verified the number of young for each treatment and if correspondence between the obtained characteristics of the reproductive apparatus and young existed, the results indicate a degeneration of weaves as increases the time of treatment in addition is observed that i number of young is directly affected when increasing the treatment.
Diet and parasites of the insular fish Scartichthys variolatus (Blenniidae) from Robinson Crusoe Island, Chile: How different is this from two continental congeneric species?
Díaz,Pablo E; Muoz,Gabriela;
Revista de biología marina y oceanografía , 2010, DOI: 10.4067/S0718-19572010000200011
Abstract: this study analyzed the diet and parasites of an insular blenniid fish, scartichthys variolatus, and then compared that with data published for two congeneric species from the south american pacific coast, s. viridis and s. gigas. fifty-two specimens of fish were collected during 2008 and 2009 from the intertidal zone of the robinson crusoe island, about 700 km off the coast of central chile. the most frequent food items in all the fish analyzed were algae. just two specimens of s. variolatus (3.8%) were parasitized only by the nematode pseudodelphis chilensis. despite the fact that all scartichthys spp. are herbivorous, and the diet was composed of similar species, there were differences in frequencies of some of the algae, maily in chaetomorpha sp. and polysiphonia sp. the low parasite species richness of s. variolatus contrasts with that of the continental congeneric species, s. viridis with 13 parasite species, and s. gigas with 13 species. therefore, the diet of these fishes can not explain differences in their parasite composition, so it is possible that environmental conditions, and the distance between the location of robinson crusoe island and the south american coast, had limited dispersal and distribution of hosts and parasites over time.
Sentido, criterios y utilidades de la evaluación del aprendizaje basado en problemas
Ríos Muoz,Daniel E;
Educaci?3n M??dica Superior , 2007,
Abstract: in present paper it is expound that considering didactic features of based on-learning problem, it is necessary a mentality change of university professors to achieve a new evaluation rationality, which must to include theoretical, conceptual, and practical elements, to assess knowledge, abilities, and attitudes of students, in addition to their involvement in assessing process.
Anular o acortar los primeros pelda?os de la Escalera Analgésica de la OMS
Rubio,A.; Muoz,E.; Sierra,R.;
Revista de la Sociedad Espa?ola del Dolor , 2008,
Abstract: objective: this study was designed to evalúate the possibility of either shorten or annul the first and second level of the who-analgesic ladder; in order to achieve pain control in patientes suffering from oa within the shortest period of time. material and methods: - first group pain was not adequately controlled by non-opioid analgesic and afterwards treated with td-fentanyl. - the second group was treated with tdf after not being adequately controlled by weak opoids, with a dose that ranged between 1 mg up to 3 mg/kg. - the third group was treated with tdf after a dose of weak opioids (tramadol) which ranged between 3,5 mg up to 6 mg/kg. results: results related to pain control, adverse effects and therapy discontinuing, were statistically and clinically similar among the three groups. conclusion: it is possible to shorten the period of time necessary to achieve pain control in patients who suffer from chronic pain related to oa by shorting or avoiding the second or first level of the who-anlgesic ladder.
Anular o acortar los primeros pelda os de la Escalera Analgésica de la OMS To annul or to shorten the first steps of the WHO Analgesic Leader
A. Rubio,E. Muoz,R. Sierra
Revista de la Sociedad Espa?ola del Dolor , 2008,
Abstract: Objetivo: Consideramos la posibilidad de anular o acortar el segundo pelda o de la escalera analgésica de la OMS, con el propósito de controlar el dolor crónico de nuestros pacientes en el menor tiempo posible. Material y métodos: Presentamos un estudio sobre 74 pacientes, divididos en tres grupos, para valorar si existen diferencias entre ellos. Un primer grupo pasó a tratarse con fentanilo TTS sin tratamiento previo con opioides débiles, los otros dos se trataron anteriormente con tramadol a dosis distintas. Un grupo a dosis previas de tramadol comprendidas entre 1 y 3 mg/Kg y otro grupo con dosis comprendidas entre 3.5 y 6 mg/Kg. Resultados: Los resultados han sido similares, clínica y estadísticamente, en cuanto a efectos secundarios, control del dolor y abandonos. Conclusiones: Concluimos que es posible acortar el tiempo necesario para controlar el dolor crónico en pacientes con patologías severas y que se presuponga necesitarán la prescripción de opioides mayores y que se puede anular el primer escalón de la OMS y también acortar el segundo. Objective: This study was designed to evalúate the possibility of either shorten or annul the first and second level of the WHO-analgesic ladder; in order to achieve pain control in patientes suffering from OA within the shortest period of time. Material and Methods: - First group pain was not adequately controlled by non-opioid analgesic and afterwards treated with TD-Fentanyl. - The second group was treated with TDF after not being adequately controlled by weak opoids, with a dose that ranged between 1 mg up to 3 mg/kg. - The third group was treated with TDF after a dose of weak opioids (tramadol) which ranged between 3,5 mg up to 6 mg/kg. Results: Results related to pain control, adverse effects and therapy discontinuing, were statistically and clinically similar among the three groups. Conclusion: It is possible to shorten the period of time necessary to achieve pain control in patients who suffer from chronic pain related to OA by shorting or avoiding the second or first level of the WHO-anlgesic ladder.
Sentido, criterios y utilidades de la evaluación del aprendizaje basado en problemas Sense, criteria, and usefulness of learning assessment based on problems
Daniel E Ríos Muoz
Educaci?3n M??dica Superior , 2007,
Abstract: En este artículo se planteó que considerando las características didácticas del aprendizaje basado en problemas, se requiere de un cambio de mentalidad de los docentes universitarios para apropiarse de una nueva racionalidad evaluativa, la que debe estar constituida por elementos teóricos, conceptuales y prácticos, a fin de evaluar el conocimiento, las habilidades y las actitudes de los estudiantes, además de promover en ellos su participación en el proceso evaluativo. In present paper it is expound that considering didactic features of based on-learning problem, it is necessary a mentality change of university professors to achieve a new evaluation rationality, which must to include theoretical, conceptual, and practical elements, to assess knowledge, abilities, and attitudes of students, in addition to their involvement in assessing process.
STYRENE/STYRENE-DERIVATIVE COPOLYMERIZATION BY PH2Zn-METALLOCENE-MAO SYSTEMS: HOMO- AND COPOLYMERIZATION OF á-METHYLSTYRENE WITH STYRENE
RABAGLIATI,FRANCO M; MUOZ,HéCTOR E; MARDONES,GABRIELA V;
Journal of the Chilean Chemical Society , 2010, DOI: 10.4067/S0717-97072010000100026
Abstract: the copolymerization of styrene with á-methylstyrene has been tested using combined metallocene-mao initiator systems with and without diphenylzinc. the metallocenes used were biscyclopentadienyltitanium dichloride, cp2ticl2, bis(n-butylcyclopentadienyl)titanium dichloride, (n-bucp)2ticl2, and the half-sandwich metallocene indenyltitanium trichloride, indticl3. the results indicate that both binary metallocene-mao, and ternary ph2zn-metallocene-mao systems are capable of polymerizing á-methylstyrene to poly(á-methylstyrene) as well of its copolymerization with styrene. these initiator systems also show that despite the 1+ inductive effect of the methyl group, which enhances electrón density at the vinyl double bond of styrene, the steric consequence of vinyl substitution hinders monomer coordination to active species, causing a decrease in conversion of either á-mes to homopolymer or s/á-mes to the corresponding copolymer. the nature and structure of the metallocene included in the initiator system are determinant of the initiator system's efficiency. for the metallocenes used the efficiency follows the order indticl3 > cp2ticl2 > (n-bucp)2ticl2, with the half-sandwich metallocene indticl3 showing greater efficiency than the true metallocenes.
Poliquetos asociados con Austromegabalanus psittacus (Molina, 1782) (Crustacea: Cirripedia) en Península Gualpén, Chile central: Biodiversidad y efecto del tama?o del sustrato biológico
Hernández,Cristián E; Muoz,Gabriela; Rozbaczylo,Nicolás;
Revista de biología marina y oceanografía , 2001, DOI: 10.4067/S0718-19572001000100009
Abstract: we studied the association of polychaetes with the cirriped, austromegabalanus psittacus on the peninsula of gualpén (viii region, chile). here we report and discuss the importance of this association for assemblages of subtidal polychaetes, we also investigated about the importance of cirriped body size on the abundance and biodiversity of polychaetes. all of the cirripeds examined contained polychaetes. we obtained 793 individuals belonging to 19 species of 12 families. the majority of the polychaetes were found in the calcareous part of the cirripeds. the most abundant and prevalent were: sylidae (typosyllis sp., autolytus sp.), nereididae (nereis callaona), spinonidae (polydora sp.), chyrospetalidae (paleanotus chrysolepis) and cirratulidae (dodecaceria opulens). we observed that the biodiversity of polychaetes and the abundances of typosyllis sp. significantly increased with the size of the cirriped host. the relationship between the size of a. psittacus and the richness of polychaete species is explained by the potential equation (y=cxz), which empirically describes the known ratio species-area in the equilibrium model of macarthur & wilson (1963), where the cirripeds behave like islands for the associated polychaetes. we discuss the importance of the recorded polychaetes in relation to similar associations on other coasts of the world.
STYRENE/STYRENE-DERIVATIVE COPOLYMERIZATION BY PH2Zn-METALLOCENE-MAO SYSTEMS: HOMO- AND COPOLYMERIZATION OF á-METHYLSTYRENE WITH STYRENE
FRANCO M RABAGLIATI,HéCTOR E MUOZ,GABRIELA V MARDONES
Journal of the Chilean Chemical Society , 2010,
Abstract: The copolymerization of styrene with á-methylstyrene has been tested using combined metallocene-MAO initiator systems with and without diphenylzinc. The metallocenes used were biscyclopentadienyltitanium dichloride, Cp2TiCl2, bis(n-butylcyclopentadienyl)titanium dichloride, (n-BuCp)2TiCl2, and the half-sandwich metallocene indenyltitanium trichloride, IndTiCl3. The results indicate that both binary metallocene-MAO, and ternary Ph2Zn-metallocene-MAO systems are capable of polymerizing á-methylstyrene to poly(á-methylstyrene) as well of its copolymerization with styrene. These initiator systems also show that despite the 1+ inductive effect of the methyl group, which enhances electrón density at the vinyl double bond of styrene, the steric consequence of vinyl substitution hinders monomer coordination to active species, causing a decrease in conversion of either á-MeS to homopolymer or S/á-MeS to the corresponding copolymer. The nature and structure of the metallocene included in the initiator system are determinant of the initiator system's efficiency. For the metallocenes used the efficiency follows the order IndTiCl3 > Cp2TiCl2 > (n-BuCp)2TiCl2, with the half-sandwich metallocene IndTiCl3 showing greater efficiency than the true metallocenes.
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