Coagulation Concentration
Coagulation Concentration - Related Videos
01:09
Coagulation
0 Views •
2024
The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries. During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
01:06
Coagulation
0 Views •
2024
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
12:24
Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes
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Cited by 9 •
2014
We present a combination of Cryo-electron microscopy, lipid nanotechnology, and structure analysis applied to resolve the membrane-bound structure of two highly homologous FVIII forms: human and porcine. The methodology developed in our laboratory to helically organize the two functional recombinant FVIII forms on negatively charged lipid nanotubes (LNT) is described.
13:08
Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
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Cited by 10 •
2012
This study describes a novel microplate assay that measures FV coagulation activity during fibrin clot formation in human plasma which has not been reported previously. The method uses a kinetic microplate reader to continuously measure the change in absorbance at 405nm during fibrin clot formation in human plasma.
08:14
Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery
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Cited by 104 •
2014
Various murine models of middle cerebral artery occlusion (MCAO) are widely used in experimental brain research. Here, we demonstrate the model of transcranial permanent distal MCAO which produces consistent cortical infarction of a size corresponding to damage imposed by the majority of human ischemic strokes.
FAQs
Added ions reduce the particles’ surface charge and compress the electrical double layer surrounding each particle. These changes weaken the electrostatic repulsion that normally keeps dispersed particles apart. When repulsion no longer prevents close approach, collisions can produce aggregation into larger flocs, allowing the dispersed material to separate from the surrounding medium.
The required electrolyte level depends on both the charge and the identity of the ions present. This relationship is summarized by the Hardy–Schulze principle, which connects ionic characteristics with the ability to destabilize a colloid. Consequently, electrolytes cannot be treated as interchangeable when comparing their effects on colloidal stability.
Coagulation concentration provides a comparative measure of how readily an electrolyte can destabilize a particular colloidal dispersion. It connects a measurable concentration threshold with the balance between particle repulsion and aggregation. In chemistry, this makes the value useful for evaluating colloid stability and for relating ionic conditions to the onset of floc formation.
The electrical double layer contributes to the repulsive environment around charged colloidal particles. As electrolyte ions enter the system, they compress this layer and reduce the effective separation between particles. The resulting loss of repulsive protection changes the dispersion from a state that resists aggregation to one in which particle collisions can produce larger flocs.
A laboratory assessment focuses on identifying the minimum added-electrolyte level at which destabilization and coagulation begin. The electrolyte concentration is related to the observed transition from a dispersed colloid to aggregated flocs that separate from the medium. This approach turns the concentration threshold into an analytical measure of the system’s colloidal behavior.
The concept supports the interpretation of precipitation and purification processes in water treatment, industrial separations, and laboratory colloid analysis. In each setting, it helps relate electrolyte conditions to the loss of colloidal stability and the formation of separable flocs. Its value is therefore both practical, for separation processes, and analytical, for studying colloids.