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Related Concept Videos

Unusual Results01:16

Unusual Results

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Unusual results are those that have a very low chance of occurring. Unusual results can be identified using probabilities and the range rule of thumb. In problems involving probability, unusual results can be observed in 2 instances – an unusually high number of successes or an unusually low number of successes.
According to the range rule of thumb, any value above or below two standard deviations, 2σ  from the mean, μ  is considered unusual.
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Angle of Twist - Elastic Range01:13

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Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
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Angle of Twist: Problem Solving01:13

Angle of Twist: Problem Solving

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An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
381
Unsymmetric Bending01:18

Unsymmetric Bending

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Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from those in symmetrical bending, and are essential for designing structures to withstand different loading conditions. In unsymmetrical bending, the neutral axis—where stress is zero—does not necessarily align with the geometric axes of the cross-section. The...
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Unsymmetric Loading of Thin-Walled Members01:23

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Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
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Residual Stresses in Circular Shafts01:10

Residual Stresses in Circular Shafts

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In materials that exhibit elastic and plastic behavior, known as elastoplastic materials, residual stresses can accumulate when these materials experience plastic deformation. This deformation arises from either high levels of shearing stress or significant strains. Residual stresses are internal stresses that persist within a material after removing the external force causing deformation. This phenomenon is demonstrated when observing the behavior of a shaft under torque; notably, the...
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Method to Measure Tone of Axial and Proximal Muscle
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A Strange Twist.

Annete O'Connell1, Rodrigo Kong1, Rohan Biswas2

  • 1Staten Island University Hospital, Department of Emergency Medicine, Staten Island, NY.

Clinical Practice and Cases in Emergency Medicine
|September 1, 2022
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Summary
This summary is machine-generated.

This case study highlights isolated fallopian tube torsion, a rare cause of acute abdominal pain in young females. Prompt surgical intervention is crucial for successful management and preventing complications.

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Area of Science:

  • Gynecologic surgery
  • Emergency medicine
  • Diagnostic imaging

Background:

  • Adnexal torsion is a common gynecologic emergency.
  • Isolated fallopian tube torsion is a rare variant.
  • Prompt diagnosis is essential to preserve ovarian and tubal function.

Purpose of the Study:

  • To present a case of isolated fallopian tube torsion in a 16-year-old female.
  • To emphasize the diagnostic challenges and management of this rare condition.

Main Methods:

  • Case presentation of a 16-year-old female with acute right lower quadrant abdominal pain.
  • Diagnostic imaging including ultrasound, computed tomography (CT), and pelvic magnetic resonance imaging (MRI).

Main Results:

  • Imaging revealed an adnexal cystic structure.
  • Physical examination showed isolated right lower quadrant tenderness.

Conclusions:

  • Isolated fallopian tube torsion is an uncommon but critical diagnosis.
  • Timely surgical intervention is necessary for optimal outcomes.
  • Radiological characterization aids in diagnosis and management planning.