Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.7K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.7K
Tumor Treating Field Therapy in Combination with Bevacizumab for the Treatment of Recurrent Glioblastoma06:15

Tumor Treating Field Therapy in Combination with Bevacizumab for the Treatment of Recurrent Glioblastoma

27.8K
A novel methodology that is employed for the treatment of recurrent glioblastomas is described. This treatment approach employs the application of alternating electric tumor treating fields (TTFields), known as TTF Therapy in combination with bevacizumab, a targeted agent that is currently FDA approved as...
27.8K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.2K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
48.2K
Band Theory02:35

Band Theory

17.1K
When two or more atoms come together to form a molecule, their atomic orbitals combine and molecular orbitals of distinct energies result. In a solid, there are a large number of atoms, and therefore a large number of atomic orbitals that may be combined into molecular orbitals. These groups of molecular orbitals are so closely placed together to form continuous regions of energies, known as the bands.
The energy difference between these bands is known as the band gap.
Conductor, Semiconductor,...
17.1K
Construction of a Low-cost Mobile Incubator for Field and Laboratory Use07:50

Construction of a Low-cost Mobile Incubator for Field and Laboratory Use

14.6K
This paper describes a method for building an adaptable, low-cost and transportable incubator for microbial testing of drinking water. Our design is based on widely available materials and can operate under a range of field conditions, while still offering the advantages of higher-end laboratory-based...
14.6K
Development of a Mobile Mitochondrial Physiology Laboratory for Measuring Mitochondrial Energetics in the Field08:54

Development of a Mobile Mitochondrial Physiology Laboratory for Measuring Mitochondrial Energetics in the Field

1.8K
We designed and constructed a mobile laboratory to measure respiration rates in isolated mitochondria of wild animals captured at field locations. Here, we describe the design and outfitting of a mobile mitochondrial laboratory and the associated laboratory protocols.
1.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Nontraditional Data in Pandemic Preparedness and Response: Identifying and Addressing First- and Last-Mile Challenges.

Journal of medical Internet research·2026
Same author

Performance evaluation of RespiCast ensemble forecasts for primary care syndromic indicators of viral respiratory disease in Europe.

medRxiv : the preprint server for health sciences·2026
Same author

Multifaceted polarization and information reliability in climate change discussions on social media platforms.

Royal Society open science·2025
Same author

Spatiotemporal variability and prediction of e-bike battery levels in bike-sharing systems.

Scientific reports·2025
Same author

Resilience of mobility network to dynamic population response across COVID-19 interventions: Evidences from Chile.

PLoS computational biology·2025
Same author

Routes of importation and spatial dynamics of SARS-CoV-2 variants during localized interventions in Chile.

PNAS nexus·2024
Same journal

The BRCA1-A complex restricts replication fork reversal-dependent DNA repair in ATM deficient cells.

Nature communications·2026
Same journal

Signaling downstream of tumor-stroma interaction regulates mucinous colorectal adenocarcinoma apicobasal polarity.

Nature communications·2026
Same journal

Click-polymerized polyenamine membranes for efficient lithium extraction.

Nature communications·2026
Same journal

Joint trajectories of brain atrophy, white matter hyperintensities and cognition quantify brain maintenance.

Nature communications·2026
Same journal

Proton shuttling at electrochemical interfaces under alkaline hydrogen evolution.

Nature communications·2026
Same journal

metilene<sup>3</sup>: identifying DMRs across multiple conditions with auto-classification.

Nature communications·2026
See all related articles

Related Experiment Video

Updated: Jan 20, 2026

Tumor Treating Field Therapy in Combination with Bevacizumab for the Treatment of Recurrent Glioblastoma
06:15

Tumor Treating Field Therapy in Combination with Bevacizumab for the Treatment of Recurrent Glioblastoma

Published on: October 27, 2014

27.8K

Field theory for recurrent mobility.

Mattia Mazzoli1, Alex Molas2, Aleix Bassolas2

  • 1Instituto de Física Interdisciplinar y Sistemas Complejos IFISC (CSIC-UIB), Campus UIB, 07122, Palma de Mallorca, Spain. mattia@ifisc.uib-csic.es.

Nature Communications
|August 31, 2019
PubMed
Summary
This summary is machine-generated.

Human daily commuting flows form a predictable vector field, enabling the definition of mobility potentials. This discovery aids in understanding urban dynamics and can be modeled using the gravity model.

More Related Videos

Crystal Field Theory - Octahedral Complexes
02:58

Crystal Field Theory - Octahedral Complexes

30.7K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.2K

Related Experiment Videos

Last Updated: Jan 20, 2026

Tumor Treating Field Therapy in Combination with Bevacizumab for the Treatment of Recurrent Glioblastoma
06:15

Tumor Treating Field Therapy in Combination with Bevacizumab for the Treatment of Recurrent Glioblastoma

Published on: October 27, 2014

27.8K
Crystal Field Theory - Octahedral Complexes
02:58

Crystal Field Theory - Octahedral Complexes

30.7K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

48.2K

Area of Science:

  • Urban studies
  • Data science
  • Physics

Background:

  • Human mobility data is vital for urban planning and epidemic forecasting.
  • Traditional surveys are being supplemented by real-time mobile data.
  • New data sources enable novel theoretical investigations into mobility patterns.

Purpose of the Study:

  • To analyze daily commuting flows in global cities.
  • To investigate the mathematical properties of human mobility vector fields.
  • To evaluate the efficacy of different models in characterizing mobility patterns.

Main Methods:

  • Mapping daily commuting flows as vector fields.
  • Applying the divergence theorem to analyze flow properties.
  • Utilizing the gravity model and intervening opportunities model for comparison.

Main Results:

  • Daily commuting flows exhibit irrotational vector field behavior.
  • A potential field can be derived, identifying mobility basins and urban areas.
  • The gravity model accurately reproduces empirical fluxes and potentials.

Conclusions:

  • Human mobility patterns possess fundamental mathematical properties.
  • Derived potentials offer a powerful tool for urban spatial analysis.
  • The gravity model provides a robust framework for understanding commuting dynamics.