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Related Concept Videos

Couple01:29

Couple

A couple is a pair of parallel forces equal in magnitude but in opposite directions. The forces are separated by a perpendicular distance, known as the couple's arm. The couple causes a rotation force or moment that rotates the body about an axis perpendicular to the plane of the forces. The resulting moment is referred to as the couple moment. The SI unit of a couple moment is the Newton-meter (N-m).
A typical example to understand this concept is tightening a bolt with a lug wrench. A force...
Equivalent Couples01:28

Equivalent Couples

In mechanical engineering, the concept of equivalent couples plays a crucial role in understanding and analyzing various mechanical systems.
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
System of Forces and Couples01:16

System of Forces and Couples

In the analysis of structural systems, it is common to encounter members subjected to various forces and couple moments. Simplifying these systems can make the analysis more manageable and easier to understand. One approach to achieve this simplification is by moving a force to a point O that does not lie on its line of action and adding a couple with a moment equal to the moment of the force about point O.
The principle of transmissibility plays a crucial role in this process. According to...
Couette Flow01:22

Couette Flow

Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...

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Twin-Screw Extrusion Process to Produce Renewable Fiberboards
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Folie à deux.

P N Suresh Kumar1, N Subramanyam, Biju Thomas

  • 1Director, Institute of Mental Health and Neurosciences, Kozhikode 673016, Kerala, India.

Indian Journal of Psychiatry
|September 4, 2010
PubMed
Summary
This summary is machine-generated.

Folie à deux involves shared mental disorders within families. Early identification and interventions like separation and therapy are crucial for managing this condition.

Keywords:
Folie à deuxfolie imposéinduced delusional disordershared psychotic disorder

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Area of Science:

  • Psychiatry and Psychology
  • Mental Health Research

Background:

  • Folie à deux is a rare condition where a mental disorder is shared by two or more individuals.
  • It typically affects individuals within close familial relationships.
  • Understanding its dynamics is crucial for effective clinical intervention.

Purpose of the Study:

  • To present two distinct case reports of folie à deux.
  • To review existing literature on the condition.
  • To emphasize the importance of prompt diagnosis and management strategies.

Main Methods:

  • Case study analysis of two individuals diagnosed with folie à deux.
  • Literature review of published research on folie à deux.
  • Clinical observation and diagnostic assessment.

Main Results:

  • Detailed presentation of two cases illustrating the shared psychotic disorder.
  • Literature review highlights common features and etiological factors.
  • The study underscores the necessity of early recognition for successful treatment.

Conclusions:

  • Folie à deux requires a multifaceted treatment approach.
  • Interventions include separation of affected individuals, antipsychotic medication, and various forms of psychotherapy (individual, group, family).
  • Prompt recognition and intervention significantly improve patient outcomes.