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Related Concept Videos

Resultant of a General Distributed Loading01:13

Resultant of a General Distributed Loading

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While designing structures exposed to non-uniform loads, it is crucial to consider the resultant force and its location. This resultant force is a single vector representing the net force applied due to the distributed load.
Examples such as load distribution due to wind and load distribution on a bridge illustrate how this concept is used to analyze and design safe, reliable structures under variable loading conditions. Most structures, such as residential buildings, bridges, and towers, are...
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Resultant Moment: Scalar Formulation01:31

Resultant Moment: Scalar Formulation

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When multiple forces act on an object in two-dimensional space, the concept of the net moment can be used to understand the tendency of these forces to induce rotational motion about a fixed point. The scalar formulation of the resultant moment is a helpful tool in analyzing the equilibrium of structures subjected to multiple forces.
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Resultant Moment: Vector Formulation01:30

Resultant Moment: Vector Formulation

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When a force is applied to an object, the tendency of the object to rotate about a point is known as its moment. If multiple forces are acting on an object, the sum of moments of all the forces acting on a body can be expressed as the resultant moment of the system. The resultant moment can be considered a vector quantity that can be added and subtracted like any other vector.
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Radical Reactivity: Nucleophilic Radicals01:16

Radical Reactivity: Nucleophilic Radicals

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Radicals adjacent to electron-donating groups are called nucleophilic radicals. These radicals readily react with electrophilic alkenes. The SOMO–LUMO interactions are the driving force for the reaction, where the high-energy SOMO of the electron-rich, nucleophilic radicals interacts with the low-energy LUMO of the electron-deficient, electrophilic alkenes. Such SOMO–LUMO interactions are the basis of reactive radical traps, affecting the selectivity in radical reactions. For...
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Radical Reactivity: Electrophilic Radicals01:02

Radical Reactivity: Electrophilic Radicals

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Radicals adjacent to electron‐withdrawing groups are called electrophilic radicals. These radicals readily react with nucleophilic alkenes. For example, the malonate radical, in which the radical center is flanked by two electron‐withdrawing groups, reacts readily with butyl vinyl ether, which consists of an electron‐donating oxygen substituent. The reaction between electrophilic malonate radical and nucleophilic vinyl ether is favored because the radical has a...
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Radical Autoxidation01:20

Radical Autoxidation

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The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
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Related Experiment Video

Updated: Jan 26, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy
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[Robot-assisted radical prostatectomy. Functional result. Part I. (in Russian only)].

D Yu Pushkar1, K B Kolontarev1

  • 1Chair of Urology, Evdokimov Moscow State University of Medicine and Dentistry of Ministry of Health of the Russia, Moscow, Russia.

Khirurgiia
|April 3, 2019
PubMed
Summary
This summary is machine-generated.

Robot-assisted radical prostatectomy offers improved functional outcomes for prostate cancer patients. This approach enhances surgical precision by preserving key nerves and the urethral sphincter, establishing a new standard in urologic surgery.

Keywords:
functional resultrobot-assisted radical prostatectomy

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Area of Science:

  • Urology
  • Surgical Oncology
  • Robotic Surgery

Background:

  • Robot-assisted surgery is increasingly recognized as a 'gold standard' in various surgical fields.
  • Robot-assisted radical prostatectomy is the most prevalent robotic procedure, particularly for prostate cancer treatment.

Purpose of the Study:

  • To review the advancements in understanding pelvic anatomy for robotic surgery.
  • To discuss nerve-sparing techniques in robot-assisted radical prostatectomy.
  • To present functional outcomes of nerve-sparing robot-assisted radical prostatectomy.

Main Methods:

  • Review of current literature on pelvic anatomy and robotic surgical approaches.
  • Description of nerve-sparing techniques for preserving neurovascular structures.
  • Analysis of functional results from nerve-sparing robot-assisted radical prostatectomy.

Main Results:

  • Improved functional outcomes in robot-assisted radical prostatectomy are linked to a refined understanding of pelvic anatomy.
  • Dissection and preservation of the external urethral sphincter and neurovascular bundles are crucial.
  • Nerve-sparing techniques contribute to better functional results post-surgery.

Conclusions:

  • Robot-assisted radical prostatectomy represents a significant advancement in prostate cancer treatment.
  • The preservation of neurovascular structures and the urethral sphincter is key to achieving superior functional outcomes.
  • This technique sets a new benchmark for surgical treatment in developed countries.