Jove
Visualize
Contáctanos
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

Videos de Conceptos Relacionados

Molecular Models02:00

Molecular Models

40.4K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
40.4K
Predicting Reaction Outcomes02:24

Predicting Reaction Outcomes

8.6K
Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
8.6K
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models01:06

Model Approaches for Pharmacokinetic Data: Distributed Parameter Models

126
Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
126
Chemical Reactions01:19

Chemical Reactions

90.8K
A chemical reaction is a process by which the bonds in the atoms of substances are rearranged to generate new substances. Matter cannot be created or destroyed in a chemical reaction—the same type and number of atoms that make up the reactants are still present in the products. Merely, the rearrangement of chemical bonds produces new compounds.
Chemical Reactions Rearrange Atoms into New Substances
A chemical reaction takes starting materials—the reactants—and changes them...
90.8K
Inductive Effects on Chemical Shift: Overview01:27

Inductive Effects on Chemical Shift: Overview

1.3K
The protons in unsubstituted alkanes are strongly shielded with chemical shifts below 1.8 ppm. Methine, methylene, and methyl protons appear at approximately 1.7, 1.2 and 0.7 ppm, while the proton signal from methane appears at 0.23 ppm. An electronegative substituent, such as chlorine, withdraws the electron density from the protons, increasing their chemical shift. Progressive substitution of the hydrogens in methane by chlorine shifts the proton signals increasingly downfield, to 3.05 ppm in...
1.3K
Reaction Quotient02:35

Reaction Quotient

49.1K
The status of a reversible reaction is conveniently assessed by evaluating its reaction quotient (Q). For a reversible reaction described by m A + n B ⇌ x C + y D, the reaction quotient is derived directly from the stoichiometry of the balanced equation as
49.1K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Predicting Nirmatrelvir Resistance in SARS-CoV-2 M<sup>pro</sup> Mutants with an Integrated Computational Framework.

The journal of physical chemistry. B·2026
Same author

Ring Strain Engineering of Cyclic Ethers for High-Performance Sodium Metal Batteries.

Angewandte Chemie (International ed. in English)·2026
Same author

Exploratory metabolomic profiling reveals metabolic alterations potentially associated with pain and blood pressure regulation in a high-sugar diet rat model.

Scientific reports·2026
Same author

FragScan: A Quantitative Fragment Scanning Strategy for Rational Drug Discovery.

Journal of chemical information and modeling·2026
Same author

Mapping metabolic reprogramming dynamics across pancreatic neuroendocrine tumor cell differentiation at single-cell transcriptomic resolution.

Frontiers in genetics·2026
Same author

Pressure-Driven Dimensional Modulation of Phase Transitions and Superconductivity in Black Phosphorus.

Nano letters·2026

Video Experimental Relacionado

Updated: Sep 9, 2025

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.9K

Un marco funcional de densidad aumentada de aprendizaje profundo para el modelado de reacciones con precisión química

Jin Xiao1,2, Yingfeng Zhang3, Bowen Li1

  • 1Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.

JACS Au
|August 29, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Deep post-Hartree-Fock (DeePHF) utiliza el aprendizaje automático para predecir con precisión la energía de la reacción, combinando la precisión de la química cuántica de alto nivel con la eficiencia computacional. Este avance supera el compromiso de precisión y escalabilidad para los desafíos de la química computacional.

Palabras clave:
DFT y sus derivadosaltura de la barrerareacciones químicasAprendizaje automáticoenergía de reacción

Más Videos Relacionados

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
12:11

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

Published on: April 8, 2020

8.3K
Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
06:37

Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package

Published on: September 17, 2021

4.6K

Videos de Experimentos Relacionados

Last Updated: Sep 9, 2025

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics
10:52

Multiscale Sampling of a Heterogeneous Water/Metal Catalyst Interface using Density Functional Theory and Force-Field Molecular Dynamics

Published on: April 12, 2019

12.9K
Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
12:11

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry

Published on: April 8, 2020

8.3K
Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
06:37

Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package

Published on: September 17, 2021

4.6K

Área de la Ciencia:

  • Química computacional
  • Mecánica Cuántica
  • Aprendizaje automático

Sus antecedentes:

  • La predicción precisa de la energética de reacción es crucial pero desafiante para los métodos convencionales de química computacional.
  • La teoría funcional de la densidad (DFT) a menudo compromete la precisión para la eficiencia.
  • Los métodos mecánicos cuánticos de alto nivel proporcionan precisión pero son computacionalmente costosos.

Objetivo del estudio:

  • Introducir Deep post-Hartree-Fock (DeePHF), un nuevo marco de aprendizaje automático.
  • Para lograr un grupo acoplado con precisión de un solo, doble y triple perturbador (CCSD) en la predicción energética de la reacción.
  • Para mantener la eficiencia computacional característica de DFT.

Principales métodos:

  • Integrar las redes neuronales con los descriptores mecánicos cuánticos.
  • Establecer un mapeo directo entre los valores propios de la matriz de densidad local y las energías de correlación de alto nivel.
  • Desarrollar un modelo de aprendizaje automático entrenado en datos de reacción de moléculas pequeñas.

Principales resultados:

  • DeePHF logra una precisión de nivel CCSD (T) en la predicción de la energía de reacción.
  • El marco demuestra un rendimiento superior y una excepcional transferibilidad entre conjuntos de datos de referencia.
  • Mantiene la escala O-{N^3}, ofreciendo una eficiencia computacional significativa.
  • Supera a los híbridos funcionales avanzados en precisión.

Conclusiones:

  • DeePHF cierra efectivamente la brecha entre la química cuántica de alta precisión y los modelos computacionales escalables.
  • El modelo elude el compromiso tradicional de precisión y escalabilidad en química computacional.
  • DeePHF presenta un avance prometedor para el modelado de reacciones químicas.