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Related Concept Videos

Real Number Operations01:27

Real Number Operations

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The concept of real numbers includes all the values that can be represented on a continuous number line. The system began with basic counting values used for enumeration. It later expanded to include values that represent the absence of quantity and opposites of the counting values. When situations required expressing parts of a whole or dividing quantities evenly, values capable of representing such proportions were developed. When written using decimal notation, these values can end or repeat...
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Operational Amplifiers01:17

Operational Amplifiers

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The operational amplifier, often referred to as an op-amp, is a multifaceted building block of a circuit. This electronic component functions like a voltage-controlled voltage source and can also be used to create a voltage- or current-controlled current source. The design of an operational amplifier enables it to execute mathematical operations when external components like resistors and capacitors are linked to its terminals. An op-amp has the capacity to sum signals, amplify a signal,...
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Ovarian Cycle01:27

Ovarian Cycle

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The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
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Vector Operations01:20

Vector Operations

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Vectors are physical quantities that have both magnitude and direction. The vector operations include addition, subtraction, and scalar multiplication.
A vector multiplied by a scalar value is called scalar multiplication. The result obtained is a new vector with a different magnitude. If the scalar is positive, the direction of the vector remains the same, but if it is negative, the direction of the vector is reversed. For example, the product of the mass and velocity yields the momentum.
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Operant Conditioning01:21

Operant Conditioning

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Operant conditioning, a key concept in behavioral psychology, involves using reinforcement and punishment to alter the likelihood of a behavior being repeated. B.F. introduced this type of conditioning. Skinner focused on voluntary behaviors and the consequences that follow them, influencing whether these behaviors will be strengthened or diminished.
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Second Derivatives and Laplace Operator01:22

Second Derivatives and Laplace Operator

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The first order operators using the del operator include the gradient, divergence and curl. Certain combinations of first order operators on a scalar or vector function yield second order expressions. Second-order expressions play a very important role in mathematics and physics. Some second order expressions include the divergence and curl of a gradient function, the divergence and curl of a curl function, and the gradient of a divergence function.
Consider a scalar function. The curl of its...
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Related Experiment Video

Updated: Feb 15, 2026

Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma
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Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma

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[Laparoscopic Operations in Ovarian Endometriosis.]

T Totev, T Tihomirova, S Tomov

    Akusherstvo I Ginekologiia
    |January 26, 2018
    PubMed
    Summary

    Laparoscopic surgery for ovarian endometriosis primarily involves cystectomy, with ovary involvement being most common. Surgical decisions depend on cyst size, disease severity, patient age, and reproductive status.

    Area of Science:

    • Gynecology
    • Surgical Oncology

    Background:

    • Endometriosis is a common gynecological condition affecting pelvic organs.
    • Ovarian endometriosis is a frequent manifestation requiring surgical intervention.

    Purpose of the Study:

    • To analyze laparoscopic surgical procedures performed for ovarian endometriosis.
    • To identify the most common surgical interventions and factors influencing surgical decisions.

    Main Methods:

    • Retrospective study of 336 patients with pelvic endometriosis.
    • Data collected from laparoscopic surgeries performed between January 2008 and July 2014.

    Main Results:

    • Ovaries are the most affected pelvic organs (76%) in endometriosis.
    • Laparoscopic cystectomy is the predominant procedure (64.9%).

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  • Radical interventions like hysterectomies with adnexa are least common (4.8%).

    • Conclusions:

    • Ovarian endometriosis necessitates tailored surgical approaches.
    • Key factors influencing surgical extent include cyst size, disease severity, patient age, and reproductive status.