What do u mean by refractory?

1 : resisting control or authority : stubborn, unmanageable. 2a : resistant to treatment or cure a refractory lesion. b : unresponsive to stimulus. c : immune, insusceptible after recovery they were refractory to infection.

Simply so What is the difference between relapsed and refractory? Relapsed CLL is the term for disease that responded to therapy but, after 6 or more months, stopped responding. Refractory disease is the term for CLL that does not result in a remission (but may be stable) or disease that gets worse within 6 months of the last treatment.

What is refractory in stage of cancer? Cancer that does not respond to treatment. The cancer may be resistant at the beginning of treatment or it may become resistant during treatment. Also called resistant cancer.

also What does refractory to antibiotics mean? Refractory: Not yielding, or not yielding readily, to treatment.

What is a example of refractory?

The definition of refractory is stubborn or hard to manage, or heat resistant. An example of someone who is refractory is a person who refuses to listen to the rules. An example of something refractory is a material like silica or alumina that are difficult to melt.

What does refractory pain mean? Intractable pain or refractory pain occurs when pain cannot be adequately controlled despite aggressive measures.

What is refractories and its classification?

Refractories are classified according to their physical form. These are the shaped and unshaped refractories. The shaped is commonly known as refractory bricks and the unshaped as monolithic refractories. Shaped refractories are those which have fixed shapes when delivered to the user.

Are ceramics refractory? Refractories are ceramic materials that are essential for all high-temperature industrial processes because they provide mechanical strength, protection against corrosion, and thermal insulation.

What is the difference between a ceramic and refractory?

Firing, as described in the article traditional ceramics, induces partial vitrification, or glass formation, which is a liquid-sintering process that binds particles together. Nonclay-based refractories, on the other hand, are bonded using techniques reserved for advanced ceramic materials.

What are refractory symptoms? A refractory symptom is one that cannot be adequately controlled despite aggressive efforts to identify a tolerable therapy that does not compromise consciousness (Cherny 1994). A refractory symptom may be subjective and, at times, nonspecific.

What are intractable symptoms?

A symptom for which all possible treatment has failed, or for which it is estimated that no methods are available for palliation within the time frame for a risk–benefit ratio that the patient can tolerate.

What is refractory delirium? Refractory symptom or refractory delirium: a symptom is defined as refractory if it continues to cause distress despite the use all other possible and tolerable symptomatic treatments that do not compromise consciousness.

What are the characteristics of a good refractory?

A good refractory material should have the following properties:

• It should be able to withstand high temperatures generated in the furnace. …
• It should be able to withstand sudden alternating heating and cooling, i.e., thermal shocks.
• It should be able to withstand abrasion and rough usage.

What is meant by refractory material?

Refractories are materials that are resistant to high temperature, used predominantly as furnace linings for elevated temperature materials processing and other applications in which thermomechanical properties are critical.

Why refractory material is used in furnace? These are the substances which can withstand very high temperature without meltning or becoming soft.

How is fire clay made? Fire clay is a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a “mineral aggregate composed of hydrous silicates of aluminium (Al₂O₃·2SiO₂·2H₂O) with or without free silica.”

Why is refractory important?

The main purpose of refractory material that is used inside a marine boiler is to contain the heat generated by burning of the fuel in the furnace and to minimise heat losses from the furnace. It is therefore important that these materials have insulating properties and are able to withstand high temperatures.

How is refractory made? Refractory manufacturing involves four processes: raw material processing, forming, firing, and final processing. … Firing involves heating the refractory material to high temperatures in a periodic (batch) or continuous tunnel kiln to form the ceramic bond that gives the product its refractory properties.

How are Refactories made?

Refractory manufacturing involves four processes: raw material processing, forming, firing, and final processing. … Firing involves heating the refractory material to high temperatures in a periodic (batch) or continuous tunnel kiln to form the ceramic bond that gives the product its refractory properties.

What are refractory ceramics used for? Refractories are ceramic materials designed to withstand the very high temperatures (in excess of 1,000°F [538°C]) encountered in modern manufacturing. More heat-resistant than metals, they are used to line the hot surfaces found inside many industrial processes.

What does midazolam do at end of life?

Parenteral benzodiazepines, such as midazolam, can be used to relieve muscle spasm and spasticity in the last days of life (Table 3).

What are refractory symptoms in heart failure? Refractory CHF is defined as symptoms of CHF at rest or repeated exacerbations of CHF despite “optimal” triple-drug therapy. Most patients with refractory CHF require hemodynamic monitoring and treatment in the intensive care unit.

What is palliative care sedation?

Palliative sedation is a measure of last resort used at the end of life to relieve severe and refractory symptoms. It is performed by the administration of sedative medications in monitored settings and is aimed at inducing a state of decreased awareness or absent awareness (unconsciousness).

What is considered untreatable pain? Intractable pain refers to a type of pain that can’t be controlled with standard medical care. Intractable essentially means difficult to treat or manage. This type of pain isn’t curable, so the focus of treatment is to reduce your discomfort. The condition is also known as intractable pain disease, or IP.

What qualifies as severe chronic pain?

Doctors often define chronic pain as any pain that lasts for 3 to 6 months or more. Chronic pain can have real effects on your day-to-day life and your mental health. But you and your doctor can work together to treat it.

What is retractable vomiting?

Intractable vomiting refers to vomiting that is difficult to control. It doesn’t lessen with time or traditional treatments. Intractable vomiting is often accompanied by nausea, when you constantly feel as if you’re about to vomit.