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Related Concept Videos

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
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Center of Gravity00:58

Center of Gravity

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The center of gravity (COG) of an object is the point where the object's total weight is considered to be concentrated. Knowing the location of the center of gravity is useful when predicting the behavior of a moving object or designing static structures. In a uniform gravitational field, the center of gravity is similar to the center of mass (COM); yet, these two points can be positioned differently. For example, the Moon's center of mass lies very close to its geometric center, but...
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Center of Gravity01:15

Center of Gravity

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The center of gravity is the point at which an object's weight appears to be concentrated and can be used to balance the object perfectly. This point is essential in mechanics as it provides information regarding a body's stability and moments of inertia. The center of gravity does not always have to fall within the shape or boundaries of the body; it may also lie outside the body in certain cases.
To determine its location, the principle of moments can be utilized by dividing the object into...
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Center of Mass00:59

Center of Mass

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The center of mass is the point at which the total mass of an object can be said to be concentrated. It is a fundamental principle in mechanics and physics that applies to all objects regardless of their shape or size. The center of gravity is the point at which an object’s weight appears to be concentrated and can be used to balance the object perfectly.
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
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Instantaneous Center of Zero Velocity01:20

Instantaneous Center of Zero Velocity

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General plane motion, often observed in a rolling wheel, refers to a type of movement where the wheel is simultaneously rotating and translating. This complex motion can be understood by breaking it down into individual components.
To analyze this, consider two points on the wheel: point A and point B. The absolute velocity of point B can be expressed as the vector sum of the absolute velocity of point A and the relative velocity of point B with respect to point A. To simplify this analysis,...
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Patient-centered Care

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Patient-centered care involves delivering care beyond inpatient hospitalization. Reflective practice can enhance a patient-centered approach. Reflective practice is a process of reasoning that considers all aspects of the present situation, including practicalities, learning from personal practice, and consideration of patient needs. Patients appreciate care decisions made while considering their input. Involving the patient in their care provides the patient with a sense of contribution rather...
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Updated: Feb 2, 2026

Highly Resolved Intravital Striped-illumination Microscopy of Germinal Centers
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Stereogenic Centers.

Alejandro Baeza1

  • 1Organic Chemistry Department and Instituto de Síntesis Orgánica, Universitat d'Alacant, 03690 Alicante, Spain. alex.baeza@ua.es.

Molecules (Basel, Switzerland)
|November 16, 2018
PubMed
Summary

Chiral organic molecules are crucial for various industries. This study explores efficient synthesis methods for these valuable compounds, advancing chemical manufacturing.

Area of Science:

  • Organic Chemistry
  • Asymmetric Synthesis

Background:

  • Growing industrial demand for enantiomerically pure compounds.
  • Need for scalable and cost-effective chiral synthesis strategies.

Discussion:

  • Exploration of novel catalytic systems for asymmetric transformations.
  • Analysis of reaction mechanisms and stereoselectivity.
  • Comparison with existing chiral technologies.

Key Insights:

  • Development of a highly efficient catalytic system for a key chiral transformation.
  • Achieved excellent enantiomeric excess (ee) and high yields.
  • Demonstrated substrate scope and catalyst recyclability.

Outlook:

  • Potential for industrial scale-up of the presented methodology.

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  • Application in the synthesis of pharmaceuticals and fine chemicals.
  • Future research directions in catalyst design and process optimization.