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Related Concept Videos

Flame Photometry: Overview01:02

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
Burn Injuries01:22

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Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
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Flame Photometry: Lab01:16

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In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
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Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
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The low reactivity in alkanes can be attributed to the non-polar nature of C–C and C–H σ bonds. Alkanes, therefore, were  initially termed as “paraffins,” derived from the Latin words: parum, meaning “too little,” and affinis, meaning “affinity.”
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Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...

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Related Experiment Video

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A Swine Burn Model for Investigating the Healing Process in Multiple Depth Burn Wounds
02:49

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Published on: February 23, 2024

Are burns photographs useful?

L Nelson1, M Boyle, I Taggart

  • 1Glasgow Royal Infirmary Burns Unit, 84 Castle Street, Glasgow G4 0SF, United Kingdom.

Burns : Journal of the International Society for Burn Injuries
|September 26, 2006
PubMed
Summary

Routine photography of burn patients is highly useful for the multidisciplinary team, particularly for teaching and patient management. While assessing burn depth can be challenging, overall benefits for patient care and future documentation are widely recognized.

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Published on: June 1, 2016

Area of Science:

  • Medical Imaging
  • Burn Care
  • Clinical Photography

Background:

  • Routine photography was implemented in the West of Scotland Regional Burns Unit in 2003.
  • Limited evaluation exists on the utility of clinical photographs in burns management.

Purpose of the Study:

  • To evaluate the usefulness of patient photographs for the multidisciplinary team in a burns unit.

Main Methods:

  • A questionnaire survey was distributed to hospital staff involved in burns patient management.
  • Data was collected over a 3-month period, with 43 questionnaires completed.

Main Results:

  • 98% of respondents found photographs useful overall, especially for teaching.
  • 72% agreed photographs aided patient management and care.
  • Key advantages include assessment of burn site, size, type, wound healing, and complications.

Conclusions:

  • Clinical photographs are a valuable tool for all members of the burns multidisciplinary team.
  • Photographs significantly contribute to patient management, education, and future care planning.