Es wurde vom amerikanischen Chemiker Stanley Benedict erfunden. Toggle navigation. Benedict's reagent is a chemical reagent commonly used to detect the presence of reducing sugars, however other reducing substances also give a positive reaction. This includes all monosaccharides and many disaccharides, including lactose and maltose.

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PubMed Central. Pardo, C. Carnero; de la Vega Cotarelo, R. Martos; Carrillo, R. Mora; Galvin, J. This study provides psychometric information for the Dating Violence Questionnaire DVQ , an instrument developed to assess intimate partner victimization among adolescents and youths. This instrument, an English version of Cuestionario de Violencia de Novios, assesses both frequency and discomfort associated with 8 types of abuse detachment, humiliation, sexual, coercion, physical, gender-based, emotional punishment, and instrumental.

Participant included U. One-third of the participants were males, and two-thirds were females. Descriptive analysis suggests higher victimization experience on subtle aggressions detachment, coercion, and emotional punishment , with overt abuses physical, instrumental obtaining the smallest means; these findings were similar across gender, race identity, and ethnicity. Results of this validation study encourage the inclusion of DVQ in both research and applied contexts.

The study included hypertensive outpatients in a university hospital and a primary healthcare unit. DEL phenotype. DEL red blood cells RBCs type as D- by routine serologic methods and are transfused routinely, without being identified as expressing a very weak D antigen, to D- recipients.

East Asian immigrants constitute 2. If such cases do occur, the most likely reason that they are not detected is the absence of active post-transfusion monitoring for formation of anti-D. Acerca del moho. El moho forma parte del medio ambiente natural. Afuera del hogar, el moho juega un papel en la naturaleza al desintegrar materias organicas tales como las hojas que se han caido o los arboles muertos.

El moho puede crecer adentro del hogar cuando las espor. Espectroscopia del Cometa Halley. El cometa se encontraba entre 0. Los espectros muestran un fuerte continuo, indicando un contenido significativo de polvo. Weiss, Nicholas T. Estudio del CH interestelar. Datos preliminares indican que a pesar de ello no se lleva a cabo con la frecuencia adecuada. Nevado del Huila, Columbia. Nevado del Huila Volcano in Colombia is actually a volcanic chain running north to south, capped by a glacier.

With peaks ranging in height from 2, to 5, meters 8, to 18, feet , Nevado del Huila is a stratovolcano composed of alternating layers of hardened lava, solidified ash, and volcanic rocks. Its first recorded eruption occurred in the mid-sixteenth century. The long-dormant volcano erupted again in mid-April In this image, the bright white area just east of the central summit is ice. Immediately west of the summit are bare rocks, appearing as blue-gray. West of those rocks, white reappears, but this patch of white results from clouds hovering in the nearby valley.

In the east, the colors turn to brown indicating bare rock and bright green indicating vegetation. On April 17, , local authorities recorded seismic activity associated with rock fracturing on the volcano's central summit, according to the ReliefWeb Website.

Activity intensified the following day with an eruption and mudflows, forcing thousands of nearby residents to evacuate. As the Associated Press reported, the eruption caused avalanches and floods that wiped away both houses and bridges. It marked the volcano's first recorded eruption since the Spanish colonized the area five centuries earlier.

En Colomb Case Study: del Amo Bioventing. The attached presentation discusses the fundamentals of bioventing in the vadose zone. The basics of bioventing are presented. The experience to date with the del Amo Superfund Site is presented as a case study.

Conservacion de truchas del Pacifico. Las participantes respondieron un cuestionario estructurado aplicado por entrevistadoras entrenadas. Resultados Edad promedio de This image shows just a portion of the park, including Grey Glacier and the mountain range of Cordillera del Paine. The rivers of glacial ice in Torres del Paine National Park grind over bedrock, turning some of that rock to dust. Many of the glaciers terminate in freshwater lakes, which are rich with glacial flour that colors them brown to turquoise.

Skinny rivers connect some of the lakes to each other image upper and lower right. Cordillera del Paine rises between some of the wide glacial valleys. The compact mountain range is a combination of soaring peaks and small glaciers, most notably the Torres del Paine Towers of Paine , three closely spaced peaks emblematic of the mountain range and the larger park.

By human standards, the mountains of Cordillera del Paine are quite old. But compared to the Rocky Mountains 70 million years old , and the Appalachians about million years , the Cordillera del Paine are very young—only about 12 million years old.

A study published in described how scientists used zircon crystals to estimate the age of Cordillera del Paine. The authors concluded that the mountain range was built in three pulses, creating a granite laccolith, or dome-shaped feature, more than 2, meters 7, feet thick.

Caption by Michon Scott. Tierra del Fuego, Argentina, South America. Early winter snow can be seen on this south tip of the Andes Mountains.

These same mountains continue underwater to Antarctica. Calidad del aire interior en las escuelas. Las observaciones incluyen todos los monitoreos existentes y se extienden desde dias antes del perihelio hasta 90 dias despues. Se detectan bruscos crecimientos en el flujo medido,hasta un factor 1O,seguidos por decaimientos lentos asociados con la fotodisociaci6n del OH.

Se obtuvieron valores para el tiempo de vida fotoquimico del OH y del H2O basandose en el modelo desarrollado previamente por Silva Key wo'L :. El Atlas del Bosque Nacional Unidades del paisaje de Puerto Rico: la influencia del clima, el substrato y la topografia.

El mapa de unidades del paisaje de Puerto Rico representa variaciones climaticas, topograficas y del substrato mediante la integracion de seis zonas climaticas Ewel y Whitmore, , seis substratos Bawiec, ; USGS, , cinco posiciones topograficas, o topoformas Martinuzzi et al. Los substratos representan el conjunto This study explores the intertextuality between Aurora Caceres's "La rosa muerta" and the novel " Del amor, del dolor y del vicio" by her ex-husband, Enrique Gomez Carrillo.

Caceres strategically mentions Gomez Carrillo's novel in "La rosa muerta" to invite a reading of her work in dialogue with his. Both narratives follow the sexual…. The results are valid for bosonic, heterotic and super-strings. The generalization of this relationship is also found when the axion field is present. Delgado; Ascanio, A. Ruiz; de Paco Matallana, C.

Visualization of general relativity illustrates aspects of Einstein's insights into the curved nature of space and time to the expert as well as the layperson. It offers remarkable features like the existence of an optical horizon beyond which time travel is possible. Standard techniques to adopt an egocentric point of view in a relativistic world model have shortcomings with respect to the time needed to render an image as well as difficulties in applying a direct illumination model.

In this paper we want to face both issues to reduce the gap between common visualization standards and relativistic visualization. The first technique allows the physicist to understand the different effects of general relativity faster and better by generating images from existing datasets interactively. This even makes it feasible to account for a direct illumination model during the rendering process.

Therefore, other areas of research can benefit from these generic improvements. Actitudes de los candidatos y maestros de ciencias en servicio acerca del uso de las herramientas computadorizadas en las clases de ciencias. Este estudio examino y comparo las actitudes de los candidatos a maestros de ciencias y los maestros de ciencias en servicio acerca de la utilizacion de las herramientas computadorizadas en las clases de ciencias.

Tambien identifico y diferencio el uso que ellos dan a estas herramientas en las clases de ciencias. Este estudio presenta un diseno descriptivo exploratorio. Constituyeron la muestra trescientos diez sujetos que fueron candidatos a maestros de ciencias o maestros de ciencias en servicio. Para recoger los datos se construyo y valido un cuestionario de treinta y un itemes.

Se utilizaron las pruebas estadisticas no parametricas Kruskal Wallis y Chi-cuadrado test de homogeneidad para establecer las diferencias entre las actitudes de los sujetos con relacion al uso de las herramientas computadorizadas en las clases de ciencias. Los hallazgos evidenciaron que son positivas y muy parecidas las actitudes de los candidatos a maestros y maestros en servicio hacia el uso de las herramientas computadorizadas.

No hubo diferencias entre los candidatos y maestros en servicio en terminos de las actitudes de confianza y empatia hacia el uso de las herramientas computadorizadas en las clases de ciencias.

En aspectos como el uso del banco de datos bibliografico Eric y el uso de las herramientas computadorizadas en actividades educativas como explorar conceptos, conceptuar, aplicar lo aprendido y hacer asignaciones hubo diferencias estadisticamente significativas entre los candidatos y los maestros en servicio. Al comparar las frecuencias observadas con las esperadas hubo mas maestros en servicio y menos candidatos que indicaron usar el anterior banco de datos y las herramientas computadorizadas en las mencionadas actividades educativas.

Silva, A. Manual del McVCO La frecuencia de la subportadora y la ganancia pueden ser seleccionadas mediante un interruptor. Cientos de instrumentos se han construido e instalado.


Reactivo De Benedict



Fundamento De Prueba De Benedict Y Lugol


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