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Related Concept Videos

Archival Research01:40

Archival Research

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Some researchers gain access to large amounts of data without interacting with a single research participant. Instead, they use existing records to answer various research questions. This type of research approach is known as archival research. Archival research relies on looking at past records or data sets to look for interesting patterns or relationships. For example, a researcher might access the academic records of all individuals who enrolled in college within the past ten years and...
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Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
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Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
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Radical Formation: Abstraction00:47

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The electron of an atom can be abstracted from a compound by a relatively unstable radical to generate a new radical of relatively greater stability. For example, an initiator which forms radicals by homolysis can abstract a suitable species like a hydrogen atom or a halogen atom from a compound to generate a new radical. This ability of radicals to propagate by abstraction is a crucial feature of radical chain reactions.
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Radical Autoxidation01:20

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The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
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Pozzolans are siliceous or aluminous materials blended with Portland cement. They interact with the calcium hydroxide produced during the hydration of Portland cement and contribute to improved strength and durability of concrete. The pozzolanic activity, a measure of a pozzolan's effectiveness, is typically assessed using the strength activity index, as defined in ASTM C 618-93, which calculates the ratio of the compressive strength of cement mixtures with and without pozzolan.
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Ruben Ardila (1942-2025).

The American psychologist·2025
Same author

Ruben Ardila (1942-2025).

The American psychologist·2025
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Ruben Ardila (1942-2025).

Helio Carpintero1

  • 1Academia de Psicología de España, Salamanca.

The American Psychologist
|April 24, 2025
PubMed
Summary

This article memorializes psychologist Ruben Ardila, highlighting his pursuit of a unified psychology through an experimental synthesis of behavior. Ardila integrated Skinnerian principles with cognitive and sociohistorical perspectives in his influential works.

Area of Science:

  • Psychology
  • Philosophy of Psychology

Background:

  • Ruben Ardila (1942-2025) was a psychologist focused on theoretical questions in psychology.
  • He sought to unify psychology by developing an "experimental synthesis of behavior."

Purpose of the Study:

  • To memorialize the work and contributions of Ruben Ardila.
  • To highlight Ardila's theoretical framework for unifying psychology.

Main Methods:

  • The article reviews Ardila's key publications, including "Walden Three" (1979) and "Experimental Synthesis of Behavior" (1988).
  • It also references his collaboration with Mario Bunge on "Philosophy of Psychology" (1987).

Main Results:

  • Ardila proposed an "experimental synthesis of behavior" integrating Skinnerian analysis with cognitive approaches.

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  • His work incorporated a view of the sociohistorical reality of the individual.

    • Conclusions:

    • Ardila's theoretical contributions aimed to bridge different psychological perspectives.
    • His legacy lies in his efforts toward a unified and comprehensive understanding of human behavior.