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Related Concept Videos

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IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
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Updated: Mar 29, 2026

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
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Fingernail Configuration.

Jin Woo Jung1, Kwang Seog Kim1, Jun Ho Shin2

  • 1Department of Plastic and Reconstructive Surgery, Chonnam National University Medical School, Gwangju, Korea.

Archives of Plastic Surgery
|December 1, 2015
PubMed
Summary
This summary is machine-generated.

Fingernail width-to-length ratios differ between sexes, while curvature varies by finger, age, and dominant hand. These findings offer crucial data for diagnosing nail conditions and guiding surgical procedures.

Keywords:
AnthropometryFingersNail diseasesNailsStatistics

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Area of Science:

  • Anatomy and Morphology
  • Dermatology
  • Medical Diagnostics

Background:

  • Fingernail configuration, including width-to-length ratio and curvature, can be altered by various conditions and diseases.
  • Abnormalities in fingernail shape may offer diagnostic clues for systemic or local disorders.
  • Precise characterization of normal fingernail morphology is lacking.

Purpose of the Study:

  • To quantitatively characterize normal fingernail configuration.
  • To investigate the influence of age, sex, height, and handedness on fingernail dimensions and curvature.
  • To establish reference ranges for fingernail morphology.

Main Methods:

  • Measurement of fingernail width-to-length (W/L) ratio, transverse curvature, hand length, hand breadth, and distal interphalangeal joint width in 300 healthy volunteers.
  • Analysis of the impact of age, sex, height, and handedness on W/L ratio and transverse curvature.

Main Results:

  • Women exhibited lower fingernail W/L ratios than men, with similar ratios across all fingers.
  • Transverse fingernail curvature was highest in the thumb, decreasing sequentially to the little finger.
  • Handedness and age influenced transverse curvature (flatter on dominant hand, increased flattening with age), but not W/L ratio.

Conclusions:

  • Quantitative data on fingernail configuration provide a valuable reference range.
  • These findings aid in diagnosing diseases and deformities affecting fingernails.
  • The data can inform reconstructive and aesthetic fingernail surgery.