Internal Air Pump
Internal Air Pump - Related Videos
01:30
ATP Driven Pumps III: V-type Pumps
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2023
V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient. The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
01:34
ATP Driven Pumps II: P-type Pumps
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2023
The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V. A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
09:18
Internal Standards
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia The goal of many chemical analyses is a quantitative analysis, where the amount of a substance in a sample is determined. In order to accurately calculate the concentration of an unknown from a sample, careful sample preparation is key. Every time a sample is handled or transferred, some of the sample can be lost. There are strategies however, for minimizing sample loss. There are also strategies for coping with sample loss and...
02:00
Internal Energy
0 Views •
2020
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial. Although the values for Ufinal and Uinitial cannot be determined for a system, the first law of thermodynamics only...
08:18
Degassing Liquids with Freeze-Pump-Thaw Cycling
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2023
Source: Laboratory of Dr. Neil Branda — Simon Fraser University Degassing refers to the process by which dissolved gases are removed from a liquid. The presence of dissolved gases such as oxygen or carbon dioxide can impede chemical reactions that utilize sensitive reagents, interfere with spectroscopic measurements, or can induce unwanted bubble formation. A number of different techniques are available for degassing liquids; some of these include heating, ultrasonic agitation, chemical...
FAQs
Each mechanism changes the volume of an enclosed chamber, producing a pressure difference that moves air through the system. A diaphragm flexes, a piston changes chamber volume through motion, and a turbine drives airflow by rotating. The selected mechanism therefore influences how the pump supplies controlled air movement to connected medical equipment.
One-way valves establish the intended direction of airflow and help prevent unwanted reverse movement. Tubing provides the connected path through which pressure changes are transmitted to the working component. Together, these parts convert chamber pressure into directed delivery, supporting predictable operation in respiratory support and pneumatic medical equipment.
Sensors monitor conditions associated with air delivery or pressure, while control circuits use that information to adjust pump operation. This feedback can help maintain a defined output rather than relying only on continuous motor activity. Regulation is especially important when medical equipment must provide consistent airflow or pressure during operation.
Performance depends on how the motor-driven mechanism, chamber, valves, tubing, sensors, and control circuitry work together. Changes in the pressure difference produced by the chamber or in the way airflow is directed can alter delivery. Careful coordination of these components supports reliability, safety, and consistency in the completed device.
Integration requires matching the pump mechanism with the enclosed chamber, one-way valves, tubing, and any sensors or control circuits used for regulation. The assembly must direct the generated pressure toward the intended function, such as airflow delivery or pneumatic actuation. This component-level coordination helps the equipment operate as a controlled system rather than as an isolated pump.
Medical equipment uses these pumps to provide airflow in respiratory support systems and to operate pneumatic components. Those components can assist with fluid management, pressure relief, or patient positioning. The same underlying pressure-generation approach therefore supports both direct air delivery and mechanical functions that depend on controlled pneumatic movement.
Pump performance affects whether equipment delivers airflow or pressure consistently and performs its intended pneumatic function reliably. Poor coordination or inadequate control can compromise the predictability of respiratory support, fluid management, pressure relief, or patient positioning systems. Engineers therefore treat pump design and control as contributors to device safety as well as routine clinical function.