Let's talk about science
Ainhoa Plasencia Herrera
radioisotopes
Radioisotopes are atoms with an unstable nucleus. The instability of the nucleus causes the atom to emits radiation to stabilize it, which makes them easily detectable and visible. They are found in nature or are produced in clinical laboratories. Thanks to this characteristic, they are used for the diagnosis of tumors or as treatments.
Yodo-131
Tecnecio-99
Radioactive iodine (RAI, also called I-131) may be used to treat thyroid cancer. This treatment can be used to remove or destroy any thyroid cancer cells that may remain after surgery or to treat some types of thyroid cancer that have spread. Iodine-131 lasts in the body for 10 days during which time close contact with people should be avoided.
The use of technetium-99m allows physicians to visualize blood flow to organs, identify blockages or narrowing in blood vessels, assess blood vessel function, and evaluate blood vessel function. detect tumors, and monitor response to treatment, among other applications.
Let's talk about science
Ainhoa Plasencia Herrera
Catalysts
Catalysts are substances that help to accelerate the rate of reactions by lowering their activation energy. By reducing this energy, catalysts allow reactions to proceed more easily and at lower temperatures or pressures. They are added in small quantities, return to their initial state after completion without undergoing any alteration and are reaction-specific. Catalysts are often used in industrial processes, including food manufacturing, to optimize manufacturing rates and volumes.
Advantages
Disadvantages
They can release toxic chemicals if landfilled or incinerated without proper treatment.Catalysts are expensive. A catalyst is affected by impurities in a chemical reaction and stops working. They require precise control of conditions
Faster chemical reactions Reduced energy requirements Lower fuel consumption. Reduced emission of pollutant gases. Reduces the cost of industrial production Improve process efficiency
Example
Enzymes are proteins that act as biological catalysts in the metabolic systems of living organisms. Enzymes facilitate many biological reactions, such as hydrolysis, polymerizations and condensations, and can act both homogeneously and heterogeneously. One of their great advantages is their high selectivity, which means that they act on a specific substrate.
Radioisotopes
ainhoa plasencia
Created on November 21, 2024
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Transcript
Let's talk about science
Ainhoa Plasencia Herrera
radioisotopes
Radioisotopes are atoms with an unstable nucleus. The instability of the nucleus causes the atom to emits radiation to stabilize it, which makes them easily detectable and visible. They are found in nature or are produced in clinical laboratories. Thanks to this characteristic, they are used for the diagnosis of tumors or as treatments.
Yodo-131
Tecnecio-99
Radioactive iodine (RAI, also called I-131) may be used to treat thyroid cancer. This treatment can be used to remove or destroy any thyroid cancer cells that may remain after surgery or to treat some types of thyroid cancer that have spread. Iodine-131 lasts in the body for 10 days during which time close contact with people should be avoided.
The use of technetium-99m allows physicians to visualize blood flow to organs, identify blockages or narrowing in blood vessels, assess blood vessel function, and evaluate blood vessel function. detect tumors, and monitor response to treatment, among other applications.
Let's talk about science
Ainhoa Plasencia Herrera
Catalysts
Catalysts are substances that help to accelerate the rate of reactions by lowering their activation energy. By reducing this energy, catalysts allow reactions to proceed more easily and at lower temperatures or pressures. They are added in small quantities, return to their initial state after completion without undergoing any alteration and are reaction-specific. Catalysts are often used in industrial processes, including food manufacturing, to optimize manufacturing rates and volumes.
Advantages
Disadvantages
They can release toxic chemicals if landfilled or incinerated without proper treatment.Catalysts are expensive. A catalyst is affected by impurities in a chemical reaction and stops working. They require precise control of conditions
Faster chemical reactions Reduced energy requirements Lower fuel consumption. Reduced emission of pollutant gases. Reduces the cost of industrial production Improve process efficiency
Example
Enzymes are proteins that act as biological catalysts in the metabolic systems of living organisms. Enzymes facilitate many biological reactions, such as hydrolysis, polymerizations and condensations, and can act both homogeneously and heterogeneously. One of their great advantages is their high selectivity, which means that they act on a specific substrate.