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Related Concept Videos

Concentration Cells02:41

Concentration Cells

25.6K
A concentration cell is a type of a  voltaic cell constructed by connecting two almost identical half-cells, both based on the same half-reaction and using the same electrode, differing only in the concentration of one redox species. A concentration cell's potential, therefore, is determined only by the concentration difference of the particular redox species.
Consider the following voltaic cell:
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Formation of Complex Ions03:45

Formation of Complex Ions

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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Solution Concentration and Dilution02:59

Solution Concentration and Dilution

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The relative amount of a given solution component is known as its concentration. Often, though not always, a solution contains one component with a concentration that is significantly greater than that of all other components. This component is called the solvent and may be viewed as the medium in which the other components are dispersed or dissolved. Solutions in which water is the solvent are, of course, very common on our planet. A solution in which water is the solvent is called an aqueous...
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Concentration and Rate Law03:03

Concentration and Rate Law

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The rate of a reaction is affected by the concentrations of reactants. Rate laws (differential rate laws) or rate equations are mathematical expressions describing the relationship between the rate of a chemical reaction and the concentration of its reactants.
For example, in a generic reaction aA + bB ⟶ products, where a and b are stoichiometric coefficients, the rate law can be written as:
37.7K
Stress Concentrations01:13

Stress Concentrations

612
The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
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Stress Concentrations01:24

Stress Concentrations

641
Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
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Leveraging Turbidity and Thromboelastography for Complementary Clot Characterization
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Prothrombin Complex Concentrates Only After Thromboelastography.

Ellis Muggleton1, Tülin Muggleton1

  • 1Department of Anesthesiology and Intensive Care Medicine Klinikum rechts der Isar, Technical University of Munich Munich Germany.

Hepatology Communications
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This correspondence discusses the application of prothrombin complex concentrates (PCCs). It addresses recent findings and clinical considerations for using these vital blood products.

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Area of Science:

  • Hematology
  • Transfusion Medicine

Background:

  • Prothrombin complex concentrates (PCCs) are critical for managing bleeding disorders.
  • Recent literature has highlighted evolving clinical applications and safety profiles of PCCs.

Purpose of the Study:

  • To provide commentary on a recent article concerning PCC usage.
  • To discuss the implications of new findings for clinical practice.

Main Methods:

  • Review of a specific published article.
  • Expert interpretation of clinical data and guidelines.

Main Results:

  • The correspondence addresses key points raised in the referenced article.
  • It offers expert insights into the appropriate use of PCCs.

Conclusions:

  • Continued evaluation of PCC efficacy and safety is essential.
  • Clinical decisions regarding PCCs should be guided by current evidence and expert consensus.