hypersensitization
hypersensitization A method of treating photographic emulsions to reduce the effects of
reciprocity failure; also known as
hypering. The most common modern technique involves soaking the film or plates in a chemically reducing gas—ideally, pure hydrogen. For amateur use,
forming gas (8 % hydrogen, 92 % nitrogen) is preferred. Other methods include soaking the film or plates in water or ammonia; baking the emulsion for many hours at around 60°C; and briefly pre-exposing the emulsion to light (
pre-flashing) to achieve a background level on top of which light from the sky will be recorded more efficiently.
Cite this article
Pick a style below, and copy the text for your bibliography.
|
Hypersensitivity pneumonitis reaction to Mycobacterium avium in household water *.(selected reports)
Magazine article from: Chest; 2/1/2005; ; 700+ words
; Background: Hypersensitivity pneumonitis has been described...describe a case of MAC-associated hypersensitivity pneumonitis-like reaction...with histologically diagnosed hypersensitivity pneumonitis and MAC-positive...
|
|
Hypersensitivity reactions to anticonvulsants, ACE inhibitors, and other drugs.(Dermatologic Emergencies, part 4)(angiotensin-converting enzyme)
Magazine article from: Consultant; 2/1/1998; ; 700+ words
; ...mortality may be associated with drug hypersensitivity syndromes, urticaria and angioedema...specifically on aromatic anticonvulsant hypersensitivity syndrome, severe reactions to minocycline...SJS, and TEN. ANTICONVULSANT HYPERSENSITIVITY Hypersensitivity reactions may develop...
|
|
Hypersensitivity pneumonitis: Knowing what to look for.
Magazine article from: Journal of Respiratory Diseases; 8/1/1999; ; 700+ words
; ...Wisconsin, Milwaukee. ABSTRACT: Hypersensitivity pneumonitis can be triggered by many...there is no single test to diagnose hypersensitivity pneumonitis. Diagnosis is established...with hobbies are responsible for hypersensitivity pneumonitis. Awareness of this disease...
|
|
Understanding and managing dentin hypersensitivity. (American Dental Hygienists' Association Continuing Education).
Magazine article from: Journal of Dental Hygiene; 9/22/2002; ; 700+ words
; ...Introduction Understanding Dentin Hypersensitivity Dental hygienists frequently...painful episodes. However, hypersensitivity is a confounding condition...benefits of treatment. Hypersensitivity has been referred to as...
|
|
Cefoperazone induced hypersensitivity vasculitis.(Case Report)(Case study)
Magazine article from: Indian Journal of Dermatology; 1/1/2009; ; 700+ words
; ...we report yet another case of hypersensitivity vasculitis associated with cefoperazone...pneumococcal pneumonia developed hypersensitivity vasculitis on the fifth day of cefoperazone therapy. Hypersensitivity vasculitis resolved gradually...
|
|
|
Allopurinol hypersensitivity: strategies to minimize the risk of a reaction. (Pitfalls in Prescribing).
Magazine article from: Consultant; 9/1/2002; ; 700+ words
; ...drug. (1-7) The allopurinol hypersensitivity syndrome occurred in more than 100...clinical features of the allopurinol hypersensitivity syndrome, such as drug-induced...Mortality associated with allopurinol hypersensitivity is about 25%. (3) An early report...
|
|
Addressing Dentin Hypersensitivity
Magazine article from: Dental Assistant; 7/1/2006; ; 700+ words
; What Is Dentin Hypersensitivity? Dentin hypersensitivity is defined as a short, sharp pain arising from exposed...The hydrodynamic theory helps explain why dentin hypersensitivity occurs. According to the theory, fluid within the...
|
|
Addressing dentin hypersensitivity.(Healthbeat)
Magazine article from: The Dental Assistant; 7/1/2006; 700+ words
; What Is Dentin Hypersensitivity? Dentin hypersensitivity is defined as a short, sharp pain arising from exposed...The hydrodynamic theory helps explain why dentin hypersensitivity occurs. According to the theory, fluid within the...
|
|
The national prevalence of chemical hypersensitivity, the medical diagnosis of multiple chemical sensitivities (MCS), and potential overlaps with asthma.
Magazine article from: Townsend Letter for Doctors and Patients; 8/1/2005; ; 700+ words
; ...determine the prevalence of chemical hypersensitivity, the medical diagnosis of multiple...11.2% of the sample reported a hypersensitivity to chemicals, and 2.5% reported...MCS. ********** Chemical hypersensitivity, often medically diagnosed as multiple...
|
|
Researchers from University of Wurzburg describe findings in hypersensitivity therapy.(Report)
Newspaper article from: Biotech Week; 11/18/2009; 700+ words
; ...in suspected fluoroquinolone hypersensitivity,' are discussed in a new report...fluoroquinolones may cause hypersensitivity reactions," scientists in Germany report (see also Hypersensitivity Therapy). "The aim of this...
|
|
hypersensitivity
Book article from: The Columbia Encyclopedia, Sixth Edition
hypersensitivity heightened response in a body tissue...the immediate, sometimes fatal hypersensitivity reaction to drugs or serum to which...sickness is a similar but milder hypersensitivity to serum proteins or drugs that...
|
|
Hypersensitivity Pneumonitis
Encyclopedia entry from: Encyclopedia of Public Health
HYPERSENSITIVITY PNEUMONITIS Hypersensitivity pneumonitis, also called extrinsic allergic alveolitis...most common of which is known as "farmer's lung." Hypersensitivity pneumonitis represents an important category of occupational...
|
|
Delayed Hypersensitivity Skin Test
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed.
Delayed Hypersensitivity Skin Test Definition A delayed hypersensitivity test (DHT) is an immune function test measuring...minutes, to give what, is termed an immediate hypersensitivity reaction. T cells responses occur over several...
|
|
Docetaxel
Encyclopedia entry from: Gale Encyclopedia of Cancer
...These side effects include severe hypersensitivity to docetaxel treatment and fluid...suppression of bone marrow function and hypersensitivity reactions. Premedication to prevent hypersensitivity reactions is recommended. Minor...
|
|
Allergies to Alcohol and Drugs
Encyclopedia entry from: Encyclopedia of Drugs, Alcohol, and Addictive Behavior
...are most frequently mediated by reactions of the immune system known as immediate hypersensitivity and delayed hypersensitivity. Immediate hypersensitivity is mediated by the serum protein immunoglobulin E(IgE), whereas delayed hypersensitivity...
|
