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Search Results: 1 - 10 of 416883 matches for " Omar M; Cruz Reyes "
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Motivación y orientación profesional en la especialidad de enfermería. Esencial en la humanización de los recursos
Ramírez Rodríguez,Maelis; Torres García,Caridad; Chávez Reyes,María Teresa; Martín Sánchez,Omar M; Cruz Reyes,Marcelina;
Revista de Ciencias M??dicas de Pinar del R?-o , 2006,
Abstract: the professional motivation is considered a result of unconscious motivational efforts, and is predetermined since early childhood by the mechanism of identification. the professional motivation is believed to be an invariable formation of the personality, therefore it is, as j. ken states, about choosing the most suitable people for a certain profession, taking into account people's individual traits. the design used in the following research is descriptive-retrospective type, aimed at knowing the relation between motivation for the nursing specialty, professional orientation, retention and promotion in second year nursing students csipj medical school, 1st. semester, course 2004-2005. the universe consisted of 335 students on the pedagogical new-model course of the nursing specialty who were surveyed. mined and csipj represented the highest percentage of nursing students' insertion into the new pedagogical model. the students' liking the profession was evident. there was relation between the retention and promotion rates, which are considered acceptable in spite of the program of professional orientation and vocational formation in the course of comprehensive self-improvement, not having the tools. the motivation for the nursing specialty positively influenced the academic results. it was recommended to develop a program of professional orientation addressed to courses on comprehensive self-improvement, as wel as developing, by tutor professors, a program of vocational reaffirmation to be applied to nursing specialty.
PRECISANDO LA CRONOLOGíA PARA LA INHUMACIóN TIPO CHENQUE, VALLE DEL RíO CISNES (AISéN, CHILE), PATAGONIA CENTRAL
REYES,OMAR; MéNDEZ,CESAR;
Magallania (Punta Arenas) , 2010, DOI: 10.4067/S0718-22442010000200008
Abstract: current research at cisnes river basin lacked bioanthropological information. the recent finding of a disturbed chenque bearing human remains provides data related to these funerary contexts, including chronological and isotopic information. the majority of known ages for this open-air burial-type in pampa-patagonia are limited to the last millennium. results obtained at pampa el frío and others take back this mortuary pattern in 400 years.
PRECISANDO LA CRONOLOGíA PARA LA INHUMACIóN TIPO CHENQUE, VALLE DEL RíO CISNES (AISéN, CHILE), PATAGONIA CENTRAL PRECISING THE CHRONOLOGY FOR THE CHENQUE BURIAL-TYPE, CISNES RIVER BASIN (AISéN, CHILE), CENTRAL PATAGONIA
OMAR REYES,CESAR MéNDEZ
Magallania , 2010,
Abstract: Las investigaciones realizadas a la fecha en el valle del río Cisnes en la Región de Aisén carecían de información bioantropológica. El reciente hallazgo de un chenque disturbado con osamentas humanas entrega datos en torno a estos contextos fúnebres, incluyendo información cronológica e isotópica. La mayoría de las edades conocidas para este tipo de entierros a cielo abierto en Pampa-Patagonia se circunscriben al último milenio. Los resultados obtenidos en Pampa El Frío se suman a otros que permiten retrotraer en cerca de 400 a os este patrón mortuorio. Current research at Cisnes river basin lacked bioanthropological information. The recent finding of a disturbed chenque bearing human remains provides data related to these funerary contexts, including chronological and isotopic information. The majority of known ages for this open-air burial-type in Pampa-Patagonia are limited to the last millennium. Results obtained at Pampa El Frío and others take back this mortuary pattern in 400 years.
NUEVOS DATOS DE LA OCUPACIóN HUMANA EN LA TRANSICIóN BOSQUE ESTEPA EN PATAGONIA: ALERO LAS QUEMAS (COMUNA DE LAGO VERDE, XI REGIóN DE AISéN).
Méndez,César; Reyes,Omar;
Magallania (Punta Arenas) , 2006, DOI: 10.4067/S0718-22442006000100011
Abstract: the following article refers to the characterization of the lithic assemblage of las quemas site (cisnes river valley, aisén region, 44o s) and its first radiocarbon date. this site is a cave with rock art, located in the forest-steppe transition that was first excavated in 1996 by francisco mena. the materials have been approached in the context of a greater discussion related to the dispersion and occupation of different environments (ever green woods, deciduous woods and steppe) by steppe hunter gatherers in central patagonia.
NUEVOS DATOS DE LA OCUPACIóN HUMANA EN LA TRANSICIóN BOSQUE ESTEPA EN PATAGONIA: ALERO LAS QUEMAS (COMUNA DE LAGO VERDE, XI REGIóN DE AISéN). NEW INFORMATION ON HUMAN SETTLEMENT IN THE FOREST STEPPE TRANSITION IN PATAGONIA: LAS QUEMAS ROCKSHELTER (LAGO VERDE DISTRICT, XI REGIóN OF AISéN).
César Méndez,Omar Reyes
Magallania , 2006,
Abstract: Se presenta la caracterización del material lítico proveniente del sitio alero Las Quemas (valle del río Cisnes, Región de Aisén 44o S), además de la primera datación radiocarbónica. Ubicado en la transición bosque-estepa, se trata de un alero con pinturas rupestres excavado en 1996 por Francisco Mena, y cuyos materiales han sido retomados en el contexto de una discusión mayor; la dispersión y ocupación de diferentes ambientes (bosque siempre verde, bosque caducifolio y estepa) por parte de grupos cazadores recolectores esteparios en Patagonia Central. The following article refers to the characterization of the lithic assemblage of Las Quemas site (Cisnes river valley, Aisén region, 44o S) and its first radiocarbon date. This site is a cave with rock art, located in the forest-steppe transition that was first excavated in 1996 by Francisco Mena. The materials have been approached in the context of a greater discussion related to the dispersion and occupation of different environments (ever green woods, deciduous woods and steppe) by steppe hunter gatherers in central Patagonia.
Piezoelectric Ceramic Controlled with Platinum Implant as New Isolator in ECG  [PDF]
Ernesto Suaste-Gómez, Carlos O. González Morán, Omar Terán-Jiménez, Héctor Reyes-Cruz
Materials Sciences and Applications (MSA) , 2014, DOI: 10.4236/msa.2014.55039
Abstract:

Recently, a new PLZT bulk single plate, called ceramic-controlled piezoelectric with two Platinum wires (CCP2) has been produced; this CCP2 has two (250 μm of diameter and 1 cm long) Platinum-wire implants. This unconventional isolation device for use with diagnostic ECG devices provides high common mode rejection and low leakage current using piezo isolator based on two Platinum wires implanted Lead Lanthanum Zirconate Titanate bulk ceramic. These isolation was validated using four experimental setups; one of them determine that ceramic-controlled piezoelectric with two Platinum wires (CCP2) support up to 6 kV DC before it cracks (short cut). The second experimental setup determined high resistance about 3.9 × 109 Ω and 1.8 × 109 Ω measured on lateral sides and among Platinum wires of CCP2 respectively. The third experimental setup was to obtain the current leakage from CCP2 and it was 6 nA. The fourth experimental setup was to obtain frequency response that was the maximum up to 2.2 MHz and was a pass band filter. Finally the CCP2 was applied as new isolator in a ECG circuit, where bioelectrical ECG signal is modulating at 16 KHz using the piezoelectric effect obtaining excellent results.

SENO GALA 1: NUEVOS RESULTADOS EN LA ARQUEOLOGíA DE LOS CANALES SEPTENTRIONALES (~44° S, REGIóN DE AISéN, CHILE) THE ARCHAEOLOGY OF THE NORTHERN CHANNELS: NEW RESULTS FROM THE SENO GALA 1 SITE (~44° S, REGIóN DE AISéN, CHILE)
OMAR REYES,CESAR MéNDEZ,MANUEL SAN ROMAN,PEDRO CARDENAS
Magallania , 2007,
Abstract: Se presentan los resultados de las prospecciones, sondeos estratigráficos y recolecciones superficiales efectuados en la costa norte del canal Jacaf, Región de Aisén (Chile). De estas actividades destaca el sitio Seno Gala 1 como la principal localidad arqueológica de interés. Se exponen las características del asentamiento, su contexto cronológico, la tecnología lítica (cadena operativa representada e inferencias conductuales) y restos ecofactuales registrados. Se pretende aportar datos para la comprensión del problema de dispersión humana en los canales septentrionales de Patagonia y costa continental de Aisén. Finalmente, se discuten los resultados en función de la investigación y correlaciones regionales, cuestionamientos relativos al modo de vida "cazador recolector marítimo", la agenda futura y la búsqueda de indicadores materiales de traslape espacial, proximidad sin contacto o interacción de estos grupos con los de tradición terrestre, ya documentados en las cercanías la desembocadura del río Cisnes (canal Puyuhuapi, -44° S) Results of surface and stratigraphic surveys and artifact collections conducted at the northern coast of Jacaf channel, Región de Aisén (Chile), are herein presented. Out of these activities, Seno Gala 1 site outstands as the main archaeological locality. We expose settlement characteristics, the chronological context, recorded lithic technology (operative chain represented and behavioral inferences) and faunal remains. We intend to contribute to the comprehension of human dispersion issue in the northern channels of Patagonia and the continental coast of Aisén. Finally, we discuss results in relation to regional research and correlations, issues related to the "maritime hunter-gatherer" way of life, the future agenda and the search for material indicators of space superposition, proximity without contact or interaction of these groups with terrestrial ones, documented near Cisnes' river outlet (Puyuhuapi channel, -44° S)
Fenoles de interés farmacológico en hojas de vides silvestres (Vitis spp.) de México
J. Refugio TOBAR-REYES,Omar FRANCO-MORA,Edgar Jesús MORALES-ROSALES,Juan Guillermo CRUZ-CASTILLO
Boletín Latinoamericano y del Caribe de Plantas Medicinales y Aromáticas , 2011,
Abstract: Estilos de vida sedentarios, conjugados con inadecuados hábitos alimenticios, incrementan el riesgo de contraer enfermedades crónicas degenerativas. En la búsqueda de posibles alternativas de prevención, se ha investigado en la calidad y aspectos nutracéuticos de productos agrícolas. Los fenoles son sustancias con importantes funciones en organismos vegetales que, además, poseen propiedades antioxidantes en el metabolismo celular de humanos y animales. Con objeto de cuantificar el contenido de tres ácidos fenólicos y un estilbeno, fueron realizados análisis por cromatografía de líquidos de alta resolución (HPLC-UV/Vis) en extractos metanólicos de hojas provenientes de 97 accesiones de vides silvestres (Vitis spp.) de Puebla, México que crecían en su ambiente natural desde 207 hasta 2175 msnm. El ácido gálico fue el más común de los metabolitos ya que se presentó en 96 de las 97 muestras, el rutín fue la segunda sustancia en común y se identificó en 80 muestras; el ácido caféico se presentó en 29 y finalmente el resveratrol en 14. Las hojas de vides silvestres poseen diversas sustancias antioxidantes que podrían tener múltiples beneficios en la salud humana; además la adecuada conservación, mantenimiento y aprovechamiento de este género provee servicios ambientales y el equilibrio de ecosistemas.
A Blind Video Watermarking Scheme Robust To Frame Attacks Combined With MPEG2 Compression
Cruz-Ramos, C.;Reyes-Reyes, R.;Nakano-Miyatake, M.;Perez-Meana, H.;
Journal of applied research and technology , 2010,
Abstract: in this paper, we propose a robust digital video watermarking scheme with completely blind extraction process where the original video data, original watermark or any other information derivative of them are not required in order to retrieve the embedded watermark. the proposed algorithm embeds 2d binary visually recognizable patterns such as company trademarks and owner's logotype, etc., in the dwt domain of the video frames for copyright protection. before the embedding process, only two numerical keys are required to transform the watermark data into a noise-like pattern using the chaotic mixing method which helps to increase the security. the main advantages of the proposed scheme are its completely blind detection scheme, robustness against common video attacks, combined attacks and its low complexity implementation. the combined attacks consist of mpeg-2 compression and common video attacks such as noise contamination, collusion attacks, frame dropping and swapping. extensive simulation results also show that the watermark imperceptibility and robustness outperform other previously reported methods. the extracted watermark data from the watermarked video sequences is clear enough even after the watermarked video had suffered from several attacks.
A Blind Video Watermarking Scheme Robust To Frame Attacks Combined With MPEG2 Compression
C. Cruz-Ramos,R. Reyes-Reyes,M. Nakano-Miyatake,H. Perez-Meana
Journal of applied research and technology , 2010,
Abstract: ABSTRACTIn this paper, we propose a robust digital video watermarking scheme with completely blind extraction process wherethe original video data, original watermark or any other information derivative of them are not required in order toretrieve the embedded watermark. The proposed algorithm embeds 2D binary visually recognizable patterns such ascompany trademarks and owner’s logotype, etc., in the DWT domain of the video frames for copyright protection.Before the embedding process, only two numerical keys are required to transform the watermark data into a noise-likepattern using the chaotic mixing method which helps to increase the security. The main advantages of the proposedscheme are its completely blind detection scheme, robustness against common video attacks, combined attacks andits low complexity implementation. The combined attacks consist of MPEG-2 compression and common video attackssuch as noise contamination, collusion attacks, frame dropping and swapping. Extensive simulation results also showthat the watermark imperceptibility and robustness outperform other previously reported methods. The extractedwatermark data from the watermarked video sequences is clear enough even after the watermarked video hadsuffered from several attacks.
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