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Search Results: 1 - 10 of 158410 matches for " Víctor Acosta Rodríguez "
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Contributions to the problems of generalization in the phonological intervention: a clinical approach
Acosta Rodríguez, Víctor M.;Léon León, Sergio;
Revista CEFAC , 2007, DOI: 10.1590/S1516-18462007000100004
Abstract: purpose: to describe the procedure which could be useful for teachers and speech therapists engaged within a school context, in the treatment of the phonological mistakes exhibited by children during their primary-school education. it is an attempt to present an intra-subject study and to observe the generalization suffered by the untrained phonemes and processes during the training of a phoneme. methods: two children with phonological impairment participated in this research. a test of phonology acosta et al. (1998) was used for the analysis of the simplifications and, later on, an intervention program by minimal pairs was applied. results: the results seem to indicate that the treatment should start with the process affecting more phonemes and that the most difficult; for example, the phoneme where the process is compulsory applied, should be chosen as the one to be trained. conclusion: the results showed that treatment must begin with the process that affects a major number of phonemes which have more difficulty in their production.
Investigaciones agrícolas en especies de uso frecuente en la medicina tradicional: IV. Llantén menor. Plantago lanceolata L
Acosta de la Luz,Lérida; Fuentes Fiallo,Víctor; Rodríguez Ferradá,Carlos;
Revista Cubana de Plantas Medicinales , 2000,
Abstract: plantago lanceolata (plantago minor) is popularly considered as a medicinal species. at present, it is among the plants whose use as a dry drug and as a fluid extract in the national health system has been approved by the ministry of public health. that′s why, it is necessary to obtain large quantities of vegetable material through its growth. a series of investigations made at "dr. carlos j. finlay" experimental station allowed to recommend the preparation of seed plots between mid-october and the beginning of november, to plant the seed at a distance of 45 x 20 cm and to harvest the vegetable material 3 times; the first at about 45 days after transplantation and the rest at intervals of 30 days, achieving a total fresh yield of 20 tons by hectare.
Investigaciones agrícolas en especies de uso frecuente en la medicina tradicional: IV. Llantén menor. Plantago lanceolata L
Lérida Acosta de la Luz,Víctor Fuentes Fiallo,Carlos Rodríguez Ferradá
Revista Cubana de Plantas Medicinales , 2000,
Abstract: Plantago lanceolata (Llantén menor), es una especie apreciada popularmente como medicinal. En la actualidad se encuentra entre las plantas que se ha aprobado su empleo como droga seca y extracto fluido por el Ministerio de Salud Pública de Cuba para su incorporación al Sistema Nacional de Salud, por lo que se requieren grandes cantidades de material vegetal obtenidos a través de su cultivo. En la Estación Experimental de Plantas Medicinales "Dr. Juan Tomás Roig" se realizaron una serie de investigaciones que permitieron aconsejar efectuar los semilleros entre mediados de octubre e inicios de noviembre, su plantación a distancia de 45 x 20 cm y la realización de 3 recolecciones del material vegetal; la primera alrededor de los 45 d después del trasplante, las restantes con frecuencia de 30 d, lográndose un rendimiento total fresco de más de 20 toneladas por hectárea. Plantago lanceolata (Plantago minor) is popularly considered as a medicinal species. At present, it is among the plants whose use as a dry drug and as a fluid extract in the National Health System has been approved by the Ministry of Public Health. That′s why, it is necessary to obtain large quantities of vegetable material through its growth. A series of investigations made at "Dr. Carlos J. Finlay" Experimental Station allowed to recommend the preparation of seed plots between mid-October and the beginning of November, to plant the seed at a distance of 45 x 20 cm and to harvest the vegetable material 3 times; the first at about 45 days after transplantation and the rest at intervals of 30 days, achieving a total fresh yield of 20 tons by hectare.
Investigaciones agrícolas en especies de uso frecuente en la medicina tradicional III: Toronjil de menta. Mentha x piperita L
Lérida Acosta de la Luz,Víctor Fuentes Fiallo,Carlos Rodríguez Ferradá
Revista Cubana de Plantas Medicinales , 2002,
Abstract: En plantas de toronjil de menta (Mentha x piperita L.) cultivadas experimentalmente durante 3 a os en la Estación Experimental de Plantas Medicinales "Dr. Juan Tomás Roig" sobre suelo ferralítico rojo hidratado se evaluaron: fecha de plantación (diciembre y enero); distancia de plantación (45 x 20 cm y 45 x 30 cm); método de plantación (en surcos y en canteros de 1 cm de anchura con 2 y 3 hileras de plantas) y momento de realizar la cosecha (primer corte a los 90 y 120 d de plantadas y segundo corte 45 y 60 d después). Los mayores rendimientos de follaje se produjeron cuando se plantaron en surcos, en el mes de diciembre, a distancia de 45 x 30 cm y se realizó la primera recolección del follaje a las 17 semanas y la segunda 45 d después (10,67 t/ha), lo que permite triplicar los rendimientos en la segunda cosecha. El número de hileras en los canteros no tuvo efecto marcado sobre el rendimiento, se encontró que la plantación en surcos era 1,2 veces superior a la de los canteros. The following variables were evaluated in plants of Mentha x piperita L experimentally grown during 3 years at "Dr. Juan Tomás Roig" Experimental Station of Medicinal Plants in hydrated red ferriferous soil: date of plantation (January and December); planting spacing (45 ′ 20 cm y 45 ′ 30 cm); planting method (in furrows and beds of 1 cm width, with 2 or 3 rows of plants) and harvest season (first cut 90 and 120 days after plantation and second cut 45 and 60 days later). The highest foliage yield was obtained when they were planted in furrows, in December, at a distance of 45 x 30 cm. The first foliage harvest was made at 17 weeks and the second one 45 days later (10.67 t/ha), which allowed to triplicate the yields in the second crop. The number of rows in each bed did not have a significant effect on yield. It was found that the cultivation in furrows was 1.2 times higher than that in beds.
Clinical implications of early differential diagnostic between Language Delay (LD) and Specific Language Impairment (SLI) [mplicaciones clínicas del diagnóstico diferencial temprano entre Retraso de Lenguaje (RL) y Trastorno Específico del Lenguaje (TEL)]
Víctor Acosta Rodríguez,Ana Moreno Santana,María Axpe Caballero
Universitas Psychologica , 2012,
Abstract: The aim of this paper is to analyze the differences between Language Delay (LD) and Specific Language Impairment (SLI) concepts from a clinical point of view. The selected sample consisted of 6 LD and 6 SLI individuals, who were chosen with standarized tools and qualitative tasks. LD children had not any treatment, meanwhile SLI children underwent an intervention program which pursued two aims: on one hand, to improve the development of linguistic comprehension and production and on the other hand, to encourage the progress of basic skills for literacy, focusing on narrative development and phonological processing. The contents of the program have been sequenced in increasing order of cognitive complexity. The U of Mann-Whitney was used to check the similarities and differences of the children′ linguistic development according to their diagnosis. Results show important differences between both groups. A positive progress of LD children stand outs, although they didn′t undergo an intervention program. Meanwhile, just the opposite happens with SLI children. These data make us think that there is not an obligatory sequence from LD to SLI children. Therefore, we regard them as different categories.
Hexavalent Chromium Removal by Citrus limonium Shell  [PDF]
Juan Manuel Vargas-Morales, Diana Bautista-Mata, Juan F. Cárdenas-González, Ismael Acosta-Rodríguez, Víctor Manuel Martínez-Juárez
Open Journal of Inorganic Non-metallic Materials (OJINM) , 2012, DOI: 10.4236/ojinm.2012.23003
Abstract: We studied the Chromium(VI) removal capacity in aqueous solution by the lemon shell, using the diphenylcarbazide method to evaluate the metal concentration. So, the highest biosorption of the metal (50 mg/L) occurs within 100 minutes, at pH of 1.0, and 28°C. According to temperature, the highest removal was observed at 60°C, in 11 minutes, when the metal (1 g/L) is completely adsorbed. At the analyzed concentrations of Cr(VI), lemon shell, showed excellent removal capacity, besides it removes efficiently the metal in situ (97.2% removal, 7 days of incubation, 5 g of biomass). After 1 hour of incubation the studied biomass reduces 1.0 g of Cr(VI) with the simultaneous production of Cr(III); so it can be used to eliminate it from industrial wastewater.
Induction of Extracellular Lytic Enzymes by Fusarium solani  [PDF]
María de Guadalupe Moctezuma-Zárate, Juan Manuel Vargas-Morales, Juan F. Cárdenas-González, Víctor Manuel Martínez-Juárez, Ismael Acosta-Rodríguez
Advances in Microbiology (AiM) , 2013, DOI: 10.4236/aim.2013.38A005
Abstract:

Fusarium solani is a necrotrophic parasitic fungus that causes wilt in some plants, causing severe economic losses in some areas of the country. The objective of this work was to analyze the induction of extracellular lytic enzymes produced by a strain of F. solani, isolated from a culture of tomato, in Villa de Arista, S.L.P. México. Polygalacturonase activity has a greater induction time at 10 days, and the xylanase has two times higher activity at 8 and 13 days of incubation at 28?C. Also, the xylanase activities A and B were very stable at 4?C. After 7 days of incubation, it has an activity of 100% and 96%, respectively, while polygalacturonase retains 61% of its initial activity. Both activities are better induced with glutamate and urea as nitrogen sources respectively, and both exhibit an initial pH optimum of 5.5. Finally, we didnt find cellulase activity in the analyzing conditions.

Remoción de Cromo (VI) por una Cepa de Paecilomyces sp Resistente a Cromato
Cárdenas-González,Juan F; Martínez-Juárez,Víctor M; Acosta-Rodríguez,Ismael;
Información tecnológica , 2011, DOI: 10.4067/S0718-07642011000400006
Abstract: the ability to reduce chromium (vi) by a fungal strain of paecilomyces sp was studied. when it was incubated in minimal medium with glucose and other inexpensive commercial carbon sources such as unrefined and brown sugar or glycerol, in the presence of 50 mg/l of cr(vi), the strain caused complete removal of cr(vi). the reduction to cr (iii) occurs in the growth medium after 7 days of incubation, at 28°c, ph 4.0, and inoculum of 38 mg. also, the fungi efficiently reduced the concentration of cr(vi) from contaminated soil wastes. the results indicate that the fungal strain of paecilomyces sp has the capacity of reducing cr(vi) to cr(iii), and therefore it could be useful for the removal of cr(vi) pollution.
Investigaciones agrícolas en especies de uso frecuente en la medicina tradicional. I. Llantén (plantago major l.)
Acosta de la Luz,Lérida; Fuentes Fiallo,Víctor R; Martín,Guillermo; Rodríguez Ferradá,Carlos A;
Revista Cubana de Plantas Medicinales , 2000,
Abstract: some experiments of farming in plantago major l. (llantén) were performed in hydrated red ferratic soil of "dr. juan t. roig" experimental station of medicinal plants over 4 years, to determine lenght of plantation (45 cm among furrows and 15, 20, 25, and 30 cm among plants); frequency of harvest (every 25, 30, 35, and 45 days, started to 45 days after transplanting); total yield of seeds in 12 harvests, started to 14 weeks of transplantating and number of leaves and non-flowering by plant. better results were obtained with lenght of plantation of 45 x 20 cm, and frequency of harvest at intervals of 45 days, where we obtained, in three cuttings of leaves, a new yield of 33,4 t/hectare. with regard to the yield of seed/hectare, the highest one was observed in eighth harvest of fruits, and there weren′t significant differences in farming to 45 x 20 or 45 x 30 cm, with total values between 1,5-2,0 t/hectare of seeds.
Investigaciones agrícolas en especies de uso frecuente en la medicina tradicional: II. Mejorana origanum majorana I
Rodríguez Ferradá,Carlos A; Acosta de la Luz,Lérida; Fuentes Fiallo,Víctor; Martín Borrego,Guillermo;
Revista Cubana de Plantas Medicinales , 2000,
Abstract: the effect of the date to plant with cuttings (january to december), the separation between plants (45 x 20, 45 x 30, and 45 x 40 cm), the cultivation method (in furrows and in beds of 1 meter width with 3 and 2 rows of plants) and the time to start harvesting (4 and 5 months after transplantation), according to the yield of foliage, were determined by field experiments made with origanum majorana l.(marjoram) in a red ferrolithic soil hydrated during 3 years at ?dr. juan tomás roig? experimental station. the highest percentages of rooted cuttings were obtained between september and february (65 to 84 %), although for a greater exploitation of the crop is better to plant by cuttings from september to october and to sow from november to december. this way, the first harvest may be indicated 4 months after transplantation and the second 2 months later. only a crop was made from the foliage of late plantations 5 months after transplantation. the most suitable distance to plant was 45 x 20 cm. the highest values were attained on planting in beds with 2 or 3 rows, with fresh yields from 10.3 to 10 t/ha, respectively.
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