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

Mass Analyzers: Overview01:13

Mass Analyzers: Overview

2.1K
The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
2.1K
Tandem Mass Spectrometry01:21

Tandem Mass Spectrometry

3.0K
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
3.0K
Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

1.3K
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
1.3K

You might also read

Related Articles

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

Sort by
Same author

Optimizing foam padding of the advanced combat helmet to maximize protection of blast-induced brain injury and wearing comfort.

Advances in engineering software (Barking, London, England : 1992)·2026
Same author

A model of axonal damage accumulation from real-world head impact exposure.

Annals of biomedical engineering·2026
Same author

Hyperintense FLAIR signal in the anterior cranial fossa.

Nature communications·2026
Same author

Measures of resting cartilage structure and composition in runners with and without knee osteoarthritis.

Osteoarthritis and cartilage open·2026
Same author

Extended difficulties after psychedelic experiences: Prevalence and associations in a global, multilingual sample.

Research square·2026
Same author

"I felt like I was providing half a service": Challenges, solutions, and action items for paramedicine when encountering patients experiencing intimate partner violence.

PloS one·2026
Same journal

Numerical Study of Human Torso Mechanical Response and Injury Assessment Under Blast Loading with Bulletproof Protection.

Annals of biomedical engineering·2026
Same journal

Immediate and Mid-Long-Term Effects of Foot Orthoses on Gait Biomechanics and Clinical Characteristics in Medial Knee Osteoarthritis: A Systematic Review and Meta-analysis.

Annals of biomedical engineering·2026
Same journal

Screening and Evaluation of Post-stroke Dysphagia: Insights from Neurology, Artificial Intelligence and Data Science-A Scoping Review.

Annals of biomedical engineering·2026
Same journal

Assessing the Efficacy of GameBreaker Softshell Headgear in Reducing Peak Head Kinematics.

Annals of biomedical engineering·2026
Same journal

Reference Standards, Numerical Consistency, and Scoring Logic: Pre-deployment Assurance Considerations for AI-Assisted Third Molar Extraction Planning : Regarding: Ko J, Sooksatra S, Kim S, Tang S, Ha JE, Han DH, Lee KH, Jung YJ, Kim MJ. Quantitative assessment of third molar extraction difficulty and nerve injury risk using artificial intelligence and image processing. Ann Biomed Eng. 2026. https://doi.org/10.1007/s10439-026-04114-9.

Annals of biomedical engineering·2026
Same journal

Un-AI-ing: Compliance, Evasion, and the Distortion of Research Writing in the Age of AI Detection.

Annals of biomedical engineering·2026
See all related articles

Related Experiment Video

Updated: May 6, 2026

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
07:30

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Published on: September 21, 2017

8.9K

On-field Head Acceleration Exposure Measurement Using Instrumented Mouthguards: Missing Data Imputation for Complete

David Luke1,2, Zaryan Masood1, Daniel Bondi2

  • 1Department of Mechanical Engineering, University of British Columbia, Vancouver, BC, Canada.

Annals of Biomedical Engineering
|May 21, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces methods to estimate missing head acceleration event (HAE) data in ice hockey, revealing significant underestimation of athlete exposure and brain injury risk metrics.

Keywords:
Contact sportsExposureHead acceleration eventInstrumented mouthguardsMissing data imputationVideo analysis

More Related Videos

Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
09:33

Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India

Published on: December 23, 2022

2.1K
Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
07:32

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

989

Related Experiment Videos

Last Updated: May 6, 2026

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact
07:30

A Test Bed to Examine Helmet Fit and Retention and Biomechanical Measures of Head and Neck Injury in Simulated Impact

Published on: September 21, 2017

8.9K
Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
09:33

Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India

Published on: December 23, 2022

2.1K
Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
07:32

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

989

Area of Science:

  • Sports Medicine
  • Biomechanics
  • Neurology

Background:

  • Accurate quantification of head acceleration events (HAEs) is crucial for understanding brain injury risk in contact sports.
  • Missing HAE data is a common challenge in real-world sports research.
  • Existing methods may not fully capture the extent of head impacts experienced by athletes.

Purpose of the Study:

  • To develop and apply missing data imputation methods for estimating complete head acceleration event (HAE) exposure.
  • To quantify the impact of missing data on HAE exposure metrics in university men's ice hockey.
  • To improve the accuracy of HAE exposure data for brain injury risk assessment.

Main Methods:

  • Collected video and instrumented mouthguard (iMG) data for HAEs over one varsity ice hockey season.
  • Utilized a statistical mapping technique to impute missing video-based HAEs from limited camera angles.
  • Applied multiple imputation to estimate missing iMG-based HAEs using complete video data.

Main Results:

  • 45% of athlete-games lacked recorded iMG data.
  • Data imputation increased median per-athlete-season HAE counts by 10% (video) and 69% (iMG).
  • Cumulative exposure metrics, including peak linear/angular acceleration and corpus callosum strain, significantly increased post-imputation.

Conclusions:

  • Missing HAE data leads to substantial underestimation of athlete exposure and associated brain trauma risks.
  • Imputation methods are essential for accurate HAE exposure assessment in sports research.
  • This study provides a critical foundation for future research on acute and long-term brain injury risks.