Video Experimental Relacionado

Updated: Apr 28, 2026

Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments
12:04

Exfoliation of Egyptian Blue and Han Blue, Two Alkali Earth Copper Silicate-based Pigments

Published on: April 24, 2014

17.3K

El paredón, México, fuente de obsidiana e intercambio formativo temprano

T H Charlton, D C Grove, P K Hopke

    Science (New York, N.Y.)
    |September 1, 1978
    PubMed
    Resumen

    Los estudios arqueológicos redescubrieron una fuente de obsidiana prehispánica en el centro de México. El análisis de oligoelementos reveló que la obsidiana de Paredón, no Otumba, fue crucial durante el período de formación temprana.

    Más Videos Relacionados

    Gamete Collection and In Vitro Fertilization of Astyanax mexicanus10:52

    Gamete Collection and In Vitro Fertilization of Astyanax mexicanus

    Published on: May 25, 2019

    9.5K
    Incremental Temperature Changes for Maximal Breeding and Spawning in Astyanax mexicanus06:36

    Incremental Temperature Changes for Maximal Breeding and Spawning in Astyanax mexicanus

    Published on: February 14, 2021

    3.5K

    Videos de Conceptos Relacionados

    Social Exchange Theory02:06

    Social Exchange Theory

    We have discussed why we form relationships, what attracts us to others, and different types of love. But what determines whether we are satisfied with and stay in a relationship? One theory that provides an explanation is social exchange theory. According to social exchange theory, we act as naïve economists in keeping a tally of the ratio of costs and benefits of forming and maintaining a relationship with others (Rusbult & Van Lange, 2003).
    26.2K
    Ion Exchange01:17

    Ion Exchange

    Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
    1.6K
    Spanning Openings in Brick Walls01:20

    Spanning Openings in Brick Walls

    In brick wall construction, supporting structures are crucial for openings like windows and doors to maintain the integrity and support the weight of the wall above. These supports include lintels, corbels, and arches, each serving specific structural purposes.
    Lintels are primary supports used to span openings and can be crafted from materials such as reinforced concrete, steel-reinforced brick masonry, or simple steel angles. These are straightforward to install and are typically concealed...
    685
    Quarrying of Stone01:15

    Quarrying of Stone

    Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
    One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
    855
    Porosity and Absorption of Aggregate01:20

    Porosity and Absorption of Aggregate

    Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
    When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
    1.0K
    Social Exchange Theory01:26

    Social Exchange Theory

    As formulated by John Thibaut and Harold Kelley, Social Exchange Theory explains human relationships as economic-like exchanges that maximize rewards and minimize costs. This theory suggests that individuals engage in relationships to gain benefits and reduce burdens, similar to economic transactions. It has been widely applied to various types of relationships, including romantic, professional, and social interactions.Rewards and Costs in RelationshipsRelationship rewards include emotional...
    889