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

Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

37.2K
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
37.2K
Sample Handling01:02

Sample Handling

2.7K
Transportation of samples from the collection point to the laboratory, as well as storage and preservation techniques, are crucial for maintaining sample integrity and ensuring accurate and reliable test results.
Samples should be transported carefully from collection points to the laboratory. They should be properly sealed and clearly labeled to prevent cross-contamination. To preserve the sample integrity, optimal temperature conditions during transport are essential. This could involve using...
2.7K
Guidelines for Nursing Documentation I01:30

Guidelines for Nursing Documentation I

2.0K
Quality documentation and reporting share essential characteristics that ensure they are practical and valuable resources for those who use them. These characteristics are:
Factual:  
The following points emphasize the significance of upholding accurate and unbiased documentation in healthcare.
2.0K
Methods of Documentation V: CBE01:23

Methods of Documentation V: CBE

1.4K
Charting by Exception, or CBE, is a method of documentation used in healthcare, particularly in nursing, that focuses on documenting only significant or abnormal findings rather than recording every detail. This approach aims to streamline the documentation process, improve efficiency, and ensure that healthcare providers can quickly identify deviations from normalcy in patient assessments.
In CBE, healthcare professionals establish predefined standards of practice that define what constitutes...
1.4K
Formats for Nursing Documentation01:28

Formats for Nursing Documentation

2.0K
Nursing documentation encompasses various formats designed to capture precise patient data, facilitate communication among healthcare team members, and ensure comprehensive and accurate patient records. Let's explore each of these formats in detail:
Nursing Assessment Form:
• A nursing assessment form is a foundational document that captures detailed patient data from physical assessments and nursing histories.
• It includes patient demographics, medical history,...
2.0K
Variability: Analysis01:11

Variability: Analysis

522
Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
522

You might also read

Related Articles

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

Sort by
Same author

The revolver halo as a forensic marker: Raman spectroscopic evidence of primer-driven gunshot residue deposition.

Forensic science international·2026
Same author

Evaluating Coronavirus Stability: Insights From Raman Spectroscopy and Multivariate Analysis.

Journal of biophotonics·2026
Same author

Corrigendum to "Design principles for LAMP-CRISPR molecular diagnostics" [Methods 251 (2026) 1-22].

Methods (San Diego, Calif.)·2026
Same author

Combination of two HSI cameras and chemometrics for discriminating bodily, non-bodily, and mixed stains.

Forensic science international·2026
Same author

Quantification of cannabinoids in medicinal Cannabis oils using bench-top mid-infrared (MIR), near-infrared (NIR), and portable NIR spectroscopy with chemometric analysis.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026
Same author

Understanding Liver and Digestive Diseases: A Paved Road to Improve Diagnosis, Management, and Treatment.

Exploration of digestive diseases·2026

Related Experiment Video

Updated: Feb 6, 2026

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach
09:32

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach

Published on: September 26, 2019

7.7K

Chemometric approaches for document dating: Handling paper variability.

Carolina S Silva1, Maria Fernanda Pimentel2, José Manuel Amigo3

  • 1Department of Fundamental Chemistry, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, Recife, Brazil.

Analytica Chimica Acta
|August 19, 2018
PubMed
Summary

This study introduces a non-destructive Fourier Transformed Infrared Spectroscopy (FTIR) method for document dating. Chemometric approaches, including Partial Least Squares (PLS) models, accurately estimate paper age regardless of composition.

Keywords:
ChemometricsDatingDocumentoscopyForensicPaper

More Related Videos

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
09:41

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research

Published on: August 2, 2021

3.5K
A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster
07:19

A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster

Published on: December 30, 2015

10.2K

Related Experiment Videos

Last Updated: Feb 6, 2026

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach
09:32

Resolving Water, Proteins, and Lipids from In Vivo Confocal Raman Spectra of Stratum Corneum through a Chemometric Approach

Published on: September 26, 2019

7.7K
Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
09:41

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research

Published on: August 2, 2021

3.5K
A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster
07:19

A New Approach that Eliminates Handling for Studying Aggression and the "Loser" Effect in Drosophila melanogaster

Published on: December 30, 2015

10.2K

Area of Science:

  • Analytical Chemistry
  • Spectroscopy
  • Chemometrics

Background:

  • Accurate document dating is crucial for historical and legal purposes.
  • Traditional methods can be destructive or lack precision.
  • Variability in paper composition complicates age estimation.

Purpose of the Study:

  • To develop a non-destructive method for estimating document age using FTIR.
  • To create a universal regression model applicable to diverse paper compositions.
  • To evaluate the efficacy of chemometric techniques in enhancing age prediction accuracy.

Main Methods:

  • Fourier Transformed Infrared Spectroscopy (FTIR) for spectral data acquisition.
  • Chemometric approaches including Partial Least Squares (PLS) regression.
  • Application of Generalized Least Squares Weighting (GLSW) and Orthogonal Least Squares (OLS) filters.
  • Utilizing sparse PLS for variable selection and model comparison.

Main Results:

  • Chemometric approaches significantly reduced sample variability.
  • Developed PLS models accurately estimated paper age across different compositions.
  • Sparse PLS demonstrated competitive performance compared to preprocessing filters.
  • FTIR combined with chemometrics offers a robust solution for document age estimation.

Conclusions:

  • FTIR spectroscopy coupled with chemometrics provides a reliable non-destructive method for document dating.
  • The proposed regression models effectively overcome challenges posed by varying paper compositions.
  • This methodology holds significant potential for applications in forensics, archival science, and historical research.