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There are two ways to determine the amount of heat involved in a chemical change: measure it experimentally, or calculate it from other experimentally determined enthalpy changes. Some reactions are difficult, if not impossible, to investigate and make accurate measurements for experimentally. And even when a reaction is not hard to perform or measure, it is convenient to be able to determine the heat involved in a reaction without having to perform an experiment.
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Deindividuation is a form of social influence on an individual’s behavior such that the individual engages in unusual or non-normal behavior while in a group setting. Why? Because in these group settings, the individual no longer sees themselves as an individual anymore, disinhibiting their behavior and personal restraint.
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Another way in which a group presence can affect performance is social loafing—the exertion of less effort by a person working together with a group. Social loafing occurs when our individual performance cannot be evaluated separately from the group. Thus, group performance declines on easy tasks (Karau & Williams, 1993). Essentially individual group members loaf and let other group members pick up the slack. Because each individual’s efforts cannot be evaluated, individuals become less...
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Histogram01:05

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The histogram is a graphical representation in the x-y form of data distribution in a data set. The horizontal x-axis is labeled with what the data represents (for instance, distance from your home to school). The vertical y-axis is labeled either frequency or relative frequency (or percent frequency or probability).
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Quartile01:15

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Updated: Jun 22, 2026

Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice
07:31

Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice

Published on: January 7, 2019

Con Happyhour, todos están debajo de la mesa.

Mark T Palfreyman1

  • 1Research Institute of Molecular Pathology, A-1030 Vienna, Austria. markthomas.palfreyman@imp.ac.at

Cell
|June 4, 2009
PubMed
Resumen

Los investigadores identificaron una nueva quinasa de la familia Ste20, Happyhour y la vía EGFR / ERK como actores clave en la intoxicación por alcohol en las moscas de la fruta. Este hallazgo arroja luz sobre los mecanismos celulares subyacentes al alcohol.

Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • Biología Molecular Biología Molecular
  • Genética La genética.

Sus antecedentes:

  • Los mecanismos moleculares y celulares precisos que impulsan la intoxicación por alcohol siguen siendo en gran medida desconocidos.
  • Comprender estos objetivos es crucial para abordar los problemas de salud relacionados con el alcohol.

Objetivo del estudio:

  • Identificar nuevos objetivos moleculares involucrados en la intoxicación por alcohol.
  • Para aclarar el papel de las vías de señalización específicas en la mediación de los efectos del alcohol.

Principales métodos:

  • Utilizado *Drosophila melanogaster* (mosca de la fruta) como un organismo modelo.
  • Investigó la función de una nueva quinasa de la familia Ste20, denominada Happyhour.
  • Se examinó el antagonismo entre Happyhour y la vía de señalización del receptor del factor de crecimiento epidérmico / quinasa regulada por la señal extracelular (EGFR / ERK).

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The HoneyComb Paradigm for Research on Collective Human Behavior
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Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice
07:31

Murine Drinking Models in the Development of Pharmacotherapies for Alcoholism: Drinking in the Dark and Two-bottle Choice

Published on: January 7, 2019

The HoneyComb Paradigm for Research on Collective Human Behavior
06:48

The HoneyComb Paradigm for Research on Collective Human Behavior

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Principales resultados:

  • Identificó la quinasa Happyhour como un factor significativo en la intoxicación por alcohol.
  • Se ha demostrado que Happyhour antagoniza la vía de señalización EGFR/ERK.
  • Se estableció un vínculo entre Happyhour, la señalización EGFR / ERK y los cambios de comportamiento inducidos por el alcohol en las moscas.

Conclusiones:

  • La quinasa Happyhour y su antagonismo de la vía EGFR/ERK están implicados en la intoxicación por alcohol.
  • Este estudio proporciona nuevos conocimientos moleculares sobre la base celular de los efectos del alcohol.
  • Los hallazgos en *Drosophila* pueden ofrecer objetivos potenciales para futuras investigaciones en mamíferos.