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CRISPR01:59

CRISPR

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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
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Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
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Additional Subnuclear Structures02:10

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The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
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Video Experimental Relacionado

Updated: Feb 8, 2026

Preparation of Gene Gun Bullets and Biolistic Transfection of Neurons in Slice Culture
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Balas de Vórtice Guiadas

Carlos F Sánchez1,2, Ángel Paredes2, Humberto Michinel2

  • 1Universidad Politécnica Salesiana, Grupo de Investigación en Física (GIF), Cuenca, 010105, Ecuador.

Physical review letters
|February 6, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores demuestran balas de vórtice no lineal 3D estables (solitones brillantes) que se autoconfinan en estructuras de guía de ondas. Una profundidad de confinamiento crítica estabiliza estos modos topológicos, permitiendo colisiones elásticas y control potencial en sistemas de ondas ópticas y de materia.

Palabras clave:
balas de vórticesolitones brillantesautoconfinamientoguías de ondasmodos topológicoscolisiones elásticasondas ópticasondas de materia

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Área de la Ciencia:

  • Óptica no lineal
  • Física de solitones
  • Propagación de ondas

Sus antecedentes:

  • El autoconfinamiento de ondas de luz y materia es crucial para sistemas no lineales.
  • Los modos de vórtice y los solitones brillantes típicamente colapsan o se dividen en 3D.
  • El momento angular orbital (OAM) juega un papel clave en la dinámica del haz.

Objetivo del estudio:

  • Demostrar la existencia de balas de vórtice no lineal 3D estables.
  • Identificar las condiciones para estabilizar estos modos topológicos.
  • Explorar sus aplicaciones potenciales en sistemas de ondas ópticas y de materia.

Principales métodos:

  • Método variacional para análisis teórico.
  • Simulaciones numéricas para validar predicciones teóricas.
  • Análisis de autointeracción y efectos de confinamiento.

Principales resultados:

  • Se demuestra la existencia de balas de vórtice no lineal 3D estables (solitones brillantes).
  • Se encuentra una profundidad de confinamiento crítica para estabilizar las balas de vórtice contra el colapso y la división.
  • Se observan colisiones elásticas entre balas que se mueven en la dirección no confinada.
  • Se identifican las condiciones experimentales para crear estos modos topológicos.

Conclusiones:

  • Se pueden formar y controlar solitones topológicos 3D estables.
  • Los hallazgos avanzan la comprensión del autoconfinamiento en sistemas no lineales multidimensionales.
  • Potencial para nuevos métodos en la estabilización y control de ondas ópticas y de materia.