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

Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

6.7K
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...
6.7K
Fixation and Sectioning01:03

Fixation and Sectioning

7.3K
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
7.3K
Guidelines and Strategies for Safe Computer Charting01:18

Guidelines and Strategies for Safe Computer Charting

2.6K
The guidelines and strategies provided by the American Nurses Association (ANA) and the Canadian Nurses Association (CNA) offer essential principles for ensuring safe and secure computer charting systems in healthcare settings. Let's break down each recommendation:
Maintain Confidentiality and Security:
2.6K

You might also read

Related Articles

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

Sort by
Same author

Therapeutic hypothermia and in-hospital mortality in 35-week infants with encephalopathy.

Journal of perinatology : official journal of the California Perinatal Association·2026
Same author

Development and validation of a sensor-integrated smart driving test system for automated, scalable, and objective driver performance evaluation.

Scientific reports·2026
Same author

Protein nutrition in the ICU: a Delphi exercise to highlight knowledge and opinions of different professional groups involved in patient critical care.

BMC nutrition·2026
Same author

Not all CPAP is created equal: device architecture and interface mechanics.

Journal of perinatology : official journal of the California Perinatal Association·2026
Same author

The Golden Hour and beyond: A neuroprotection bundle to reduce intraventricular hemorrhage.

Seminars in fetal & neonatal medicine·2026
Same author

Hybrid Cellulose Acetate Films with Carbon and Cellulose Nanostructures for Enhancing Its Properties: Structural, Mechanical, and Liquid Crystal Properties.

ACS omega·2026

Related Experiment Video

Updated: Jan 6, 2026

Using Archival Japanese Paper and Thermoplastic Resins to Prepare Fossils for Storage, Display, Transport, and Radiography
07:30

Using Archival Japanese Paper and Thermoplastic Resins to Prepare Fossils for Storage, Display, Transport, and Radiography

Published on: November 14, 2025

739

New Approach for Securing and Dating Valuable Printed Documents.

Altaf H Basta1, Houssni El-Saied1, Ahmad S Salim2

  • 1Cellulose and Paper Department National Research Centre Dokki Giza 12622 Egypt.

Global Challenges (Hoboken, NJ)
|October 9, 2019
PubMed
Summary

This study introduces a novel method using UV ink and machine identification codes (MIC) to secure and date printed documents, aiding in forgery detection. The approach successfully extracts printer data and printing dates, visible under UV light.

Keywords:
UV inkscounterfeiting and forging testsdating documentsfluorescence compoundsforging crime detection on valuable documentsmachine identification code (MIC)security paper documents

More Related Videos

Fabrication of Three-dimensional Paper-based Microfluidic Devices for Immunoassays
11:33

Fabrication of Three-dimensional Paper-based Microfluidic Devices for Immunoassays

Published on: March 9, 2017

16.2K
Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces
06:16

Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces

Published on: December 18, 2018

7.6K

Related Experiment Videos

Last Updated: Jan 6, 2026

Using Archival Japanese Paper and Thermoplastic Resins to Prepare Fossils for Storage, Display, Transport, and Radiography
07:30

Using Archival Japanese Paper and Thermoplastic Resins to Prepare Fossils for Storage, Display, Transport, and Radiography

Published on: November 14, 2025

739
Fabrication of Three-dimensional Paper-based Microfluidic Devices for Immunoassays
11:33

Fabrication of Three-dimensional Paper-based Microfluidic Devices for Immunoassays

Published on: March 9, 2017

16.2K
Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces
06:16

Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces

Published on: December 18, 2018

7.6K

Area of Science:

  • Forensic Science
  • Document Examination
  • Analytical Chemistry

Background:

  • Document forgery poses a significant challenge in legal and security contexts.
  • Existing methods for document authentication may lack precision in dating and origin verification.
  • The need for robust techniques to identify and date printed materials is critical.

Purpose of the Study:

  • To develop and validate a novel approach for securing and dating printed documents.
  • To detect potential forging crimes through document analysis.
  • To extract embedded printer data and determine the printing date.

Main Methods:

  • Extraction of coded dots matrices (machine identification code - MIC) using a binary system (base 2).
  • Preparation of novel UV fluorescent ink using fluorescence compounds and polyvinyl alcohol.
  • Printing document designs using various Xerox color laser printer models.
  • Analysis of printed documents under UV light for data retrieval.

Main Results:

  • The novel approach successfully specified the date of the printing process.
  • Embedded data from the printer (MIC) was translated into visible information under UV light.
  • The method demonstrated effectiveness in securing and dating printed documents, aiding in forgery detection.

Conclusions:

  • The developed technique provides a reliable method for authenticating printed documents.
  • This approach enhances the examination of questioned documents by providing verifiable printing dates and printer identification.
  • The use of UV ink and MIC offers a promising solution for combating document forgery.