Jove
Visualize
Contáctanos

Videos de Conceptos Relacionados

Lumber01:19

Lumber

165
Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
165
Lateralization01:28

Lateralization

393
Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.
393
Lenz's Law01:15

Lenz's Law

4.2K
The direction in which the induced emf drives the current around a wire loop can be found through the negative sign. However, it is usually easier to determine this direction with Lenz's law, named in honor of its discoverer, Heinrich Lenz (1804–1865). Lenz's law states that the direction of the induced emf drives the current around a wire loop always to oppose the change in magnetic flux that causes the emf.
If a bar magnet is moved toward a coil such that the magnetic flux...
4.2K
Laminins are the Adhesive Proteins of Basal Lamina00:55

Laminins are the Adhesive Proteins of Basal Lamina

2.2K
Laminins are heterotrimeric proteins with high molecular mass found in the extracellular matrix. Each laminin molecule is composed of three chains, viz. alpha, beta, and gamma, coded by five, four, and three paralogous genes, respectively. Laminins are categories based on the compositions of the three chains.
In humans, the five forms of alpha chains are LAMA 1, LAMA 2, LAMA 3, LAMA 4, and LAMA 5. The four forms of beta chains are LAMB 1, LAMB 2, LAMB 3, and LAMB 4. The three forms of gamma...
2.2K
Lift01:23

Lift

218
Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
218
Larynx01:21

Larynx

1.9K
The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
1.9K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Threatened 'rolling stone reefs' are surprisingly diverse.

Science (New York, N.Y.)·2026
Same author

Invasive mussel is rapidly spreading in Amazonian rivers.

Science (New York, N.Y.)·2026
Same author

Silenced genomes.

Nature medicine·2026
Same author

A foundation of trust.

Science (New York, N.Y.)·2025
Same author

A window on health adaptations in a changing climate.

Nature medicine·2025
Same author

AI challenge to find lost Amazonian cities draws critics.

Science (New York, N.Y.)·2025
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Video Experimental Relacionado

Updated: Aug 21, 2025

Author Spotlight: Advancing Pelvic Prolapse Treatment with a Non-Mesh Approach using Laparoscopic Pectopexy
03:30

Author Spotlight: Advancing Pelvic Prolapse Treatment with a Non-Mesh Approach using Laparoscopic Pectopexy

Published on: October 25, 2024

1.6K

Después de la victoria de Lula, ¡un gran alivio!

Sofia Moutinho1

  • 1Sofia Moutinho is a science journalist in Rio de Janeiro.

Science (New York, N.Y.)
|November 15, 2022
PubMed
Resumen
Este resumen es generado por máquina.

La comunidad científica de Brasil se opuso en gran medida al ex presidente Jair Bolsonaro. Su sucesor se enfrenta ahora a importantes obstáculos en la política científica y de investigación.

Más Videos Relacionados

Author Spotlight: Advancing Hepatobiliary and Pancreatic Tumor Treatment with Minimally Invasive Surgical Techniques
03:33

Author Spotlight: Advancing Hepatobiliary and Pancreatic Tumor Treatment with Minimally Invasive Surgical Techniques

Published on: September 27, 2024

955
Laparoscopic Non-Mesh Cerclage Pectopexy for Pelvic Organ Prolapse
03:43

Laparoscopic Non-Mesh Cerclage Pectopexy for Pelvic Organ Prolapse

Published on: September 13, 2022

5.5K

Videos de Experimentos Relacionados

Last Updated: Aug 21, 2025

Author Spotlight: Advancing Pelvic Prolapse Treatment with a Non-Mesh Approach using Laparoscopic Pectopexy
03:30

Author Spotlight: Advancing Pelvic Prolapse Treatment with a Non-Mesh Approach using Laparoscopic Pectopexy

Published on: October 25, 2024

1.6K
Author Spotlight: Advancing Hepatobiliary and Pancreatic Tumor Treatment with Minimally Invasive Surgical Techniques
03:33

Author Spotlight: Advancing Hepatobiliary and Pancreatic Tumor Treatment with Minimally Invasive Surgical Techniques

Published on: September 27, 2024

955
Laparoscopic Non-Mesh Cerclage Pectopexy for Pelvic Organ Prolapse
03:43

Laparoscopic Non-Mesh Cerclage Pectopexy for Pelvic Organ Prolapse

Published on: September 13, 2022

5.5K

Área de la Ciencia:

  • Ciencias políticas
  • Las políticas científicas
  • Estudios brasileños

Sus antecedentes:

  • La presidencia de Jair Bolsonaro (2019-2022) estuvo marcada por una importante polarización política y políticas que afectaron la investigación científica y la financiación en Brasil.
  • Un segmento sustancial de la comunidad científica de Brasil expresó una fuerte oposición a la administración de Bolsonaro debido a las amenazas percibidas a la libertad académica y la integridad de la investigación.

Objetivo del estudio:

  • Analizar el clima político que rodea a la ciencia en Brasil durante y después de la administración Bolsonaro.
  • Identificar los desafíos clave que enfrenta la comunidad científica de Brasil y su nuevo liderazgo.

Principales métodos:

  • Análisis cualitativo del discurso político y los informes de los medios de comunicación sobre la política científica en Brasil.
  • Revisión de las declaraciones públicas de la comunidad científica y de las respuestas institucionales a las acciones gubernamentales.

Principales resultados:

  • La desaprobación generalizada de la comunidad científica de las políticas y la retórica de Bolsonaro.
  • Identificación de cuestiones críticas, incluidos los recortes presupuestarios, la reducción de la colaboración internacional y la interferencia política en las instituciones de investigación.

Conclusiones:

  • La transición a una nueva administración presidencial presenta una oportunidad para recalibrar la política científica en Brasil.
  • Para hacer frente a los desafíos se requieren esfuerzos concertados para restablecer la confianza, aumentar la financiación y reforzar la autonomía de la comunidad científica.