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Related Concept Videos

Errors in Taping01:18

Errors in Taping

Errors in taping arise from multiple factors that can significantly impact measurement accuracy in surveying. Misalignment of the tape, often due to human error, is one primary source. A skilled rear tapeman, using a telescope, can help correct alignment by guiding the head tapeman; however, human limitations still lead to small inaccuracies. These errors may include misplacement of pins or inaccurate tape readings due to common visual confusions, such as mistaking a six for a nine. Such...
Fault Types01:18

Fault Types

When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
Minor Losses in Pipes01:25

Minor Losses in Pipes

In pipe systems, minor losses refer to energy losses arising from components such as valves, bends, fittings, expansions, and other features that disrupt the steady flow of fluid. These disturbances cause energy dissipation through turbulence and resistance, which engineers quantify to manage system efficiency effectively.
Valves play a significant role in generating minor losses by obstructing or redirecting the fluid flow. When a valve is closed or partially closed, it restricts the flow...
Major Losses in Pipes01:28

Major Losses in Pipes

When a fluid flows through a pipe, it experiences energy losses due to frictional resistance along the pipe walls, known as major losses. These energy losses result in a pressure drop, which varies based on the flow conditions — whether laminar or turbulent — and the specific physical properties of the fluid and pipe.
Fluid flow can be classified as laminar or turbulent, primarily based on the Reynolds number. This dimensionless number reflects the relative influence of inertial to viscous...
Contaminants and Errors01:16

Contaminants and Errors

Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis.
Another key consideration is determining the appropriate number of samples required to...
Errors and Mistakes in Surveying01:19

Errors and Mistakes in Surveying

Errors and mistakes in surveying refer to inaccuracies in measurements and data recording. The errors are deviations from the actual value caused by human sensory limitations, equipment flaws, or environmental effects. These errors are typically unintentional and can result from the inherent imperfections in the instruments used, atmospheric conditions, or the observer’s inability to perceive exact measurements. On the other hand, mistakes are caused by the surveyor's lack of attention,...

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Related Experiment Video

Updated: May 27, 2026

Detection of Targetable Alterations in Non-small Cell Lung Cancer using Next-generation Sequencing
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Detection of Targetable Alterations in Non-small Cell Lung Cancer using Next-generation Sequencing

Published on: October 10, 2025

When fue goes wrong!

Arvind Poswal1, Sangay Bhutia, Ruby Mehta

  • 1Poswal's Clinic, New-Delhi, India.

Indian Journal of Dermatology
|November 29, 2011
PubMed
Summary

Follicular unit extraction (FUE) is a hair transplant technique using tiny punches for minimal scarring. Careful technique is crucial to avoid graft displacement and ensure successful outcomes.

Area of Science:

  • Dermatology
  • Surgical Techniques

Background:

  • Follicular unit extraction (FUE) is a widely accepted hair transplant method.
  • FUE utilizes small punches for graft harvesting, leading to minimal scarring and patient acceptance.

Purpose of the Study:

  • To highlight potential pitfalls during FUE procedures.
  • To illustrate adverse consequences resulting from improper FUE techniques.

Main Methods:

  • Review of cases demonstrating complications in FUE.
  • Emphasis on differentiating FUE from older plug graft methods.

Main Results:

  • Improper FUE can lead to graft subluxation into the subdermal layer.
  • Factors contributing to complications include overtumescence, blunt punches, and "coring" grafts.
Keywords:
Follicular unit extractionandrogenic alopeciafollicular unit grafttumescence

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Conclusions:

  • Careful execution of FUE is essential to prevent complications.
  • Avoiding specific technical errors ensures graft integrity and successful hair transplantation.