Silver halide photographic elements which are capable of high contrast development and are especially useful in the field of graphic arts have incorporated therein a hydrazine compound which functions as a nucleator, an amino compound which functions as an incorporated booster, and a thioether compound...
aBy contrast,inorganic chemistry refers to the chemistry of all other elements and approximately 600,000 inorganic compounds. By contrast, inorganic chemistry refers to the chemistry of all other elements and approximately 600,000 inorganic compounds.[translate]...
By contrast,inorganic chemistry refers to the chemistry of all other elements and approximately 600,000 inorganic compounds.问题补充:匿名 2013-05-23 12:21:38 相比之下,无机化学,是指对所有其他元素和无机化合物约60万的化学性质。 匿名 2013-05-23 12:23:18 inorganic chemistry By contrast, ref...
(Elements & Compounds) a bluish-black element of the halogen group that sublimates into a violet irritating gas. Its compounds are used in medicine and photography and in dyes. The radioisotopeiodine-131(radioiodine), with a half-life of 8 days, is used in the diagnosis and treatment of th...
US5545505 1995年9月19日 1996年8月13日 Minnesota Mining And Manufacturing Company Amine compounds as contrast enhancers for black-and-white photothermographic and thermographic elementsT. J. Murray,S. M. Simpson.Acrylonitrile compounds as co-developers for black-and-white photothermographic and ...
The chemical compound, entirely made up of hydrogen and carbon atoms and is highly combustible, is called hydrocarbon. Examples of hydrocarbon are butane, ethane, and propane.Answer and Explanation: Similarity between alkanes, alkenes, and alkynes: The compounds like alkanes, alkenes, an...
The poor tolerance profile of these metallic ions was, however, mentioned as a critical factor, and it was therefore unclear whether administering paramagnetic substances such as ions of the transitional elements and lanthanides or nitroxyl compounds would be feasible for clinical diagnosis. Chelation ...
摘要: The structure of compounds containing group 14 elements such as germanium and silicon provides an interesting opportunity for comparison with corresponding carbon compounds.关键词:ALCOHOL HEALTH EDUCATION DOI: 10.1021/ed069p441 被引量: 13 ...
Negative-acting silver halide photographic materials comprising Group VIII metal doped silver halide emulsions free from contrast-promoting amounts of hydrazine derivatives containing as speed and contrast promoting agents one or more compounds of the general formula: <CHEM> The photographic materials are ...
X-ray contrast agents are injectable or ingestible compounds with high electron density that will attenuate X-rays. Many contrast agents will perfuse or preferentially concentrate at a specific tissue, thus enabling its visualization and differentiation from surrounding sites. There are several broad ca...