منابع مشابه
Improving Fly Ash Whiteness and the Influence of Modified Fly Ash on the Physical Strength of Paper
In order to improve the whiteness of fly ash, the particles were coated by in-situ precipitation of calcium carbonate. After different mass ratios of calcium oxide to fly ash were mixed into water, a certain amount of carbon dioxide was bubbled into the mixture to form a precipitated calcium carbonate deposit on the surface of fly ash. With the help of scanning electron microscopy (SEM), the pr...
متن کاملResearch on the Whiteness and Properties of Modified Coal Fly Ash
In the filling of polymer, coal fly ash has been limited in use by its unlovely grey color. In order to improve the qualities of coal fly ash from Huaneng Power international Incorporation Dezhou Power Plant, its meso-structure and influencing factors on whiteness have been tested and analyzed. Ca(OH)2-H2O-CO2 system to modify the fly ash is conducted. Round coating testify that the system can ...
متن کاملInto the winter whiteness.
A father recounts a transformative journey of love, loss, and learning as his son developed and eventually died of a fungal infection that occurred during a period of immunocompromise after a bone marrow transplantation to treat hypodiploid leukemia. He then thanks the many physicians, researchers, family members, and friends who came together to memorialize his son and create knowledge, hope, ...
متن کاملAdsorptive removal of erythrosine dye from aqueous solutions using used cigarette filter ash loaded with Al/ Fe oxides
Dye contamination in water is a serious environmental problem around the world. Erythrosine is a water-soluble xanthenes class of dye that widely used as colorant in many industries. Used cigarette filter ash loaded with Al/ Fe oxides was synthesized by a low-cost, simple, and environmentally benign procedure. The adsorbent was characterized by several methods including energy dispersive X-ray ...
متن کاملA review of tooth colour and whiteness.
OBJECTIVES To review current knowledge on the definition of tooth whiteness and its application within dentistry, together with the measured range of tooth colours. METHODS 'Medline' and 'ISI Web of Sciences' databases were searched electronically with key words tooth, teeth, colour, colour, white and whiteness. CONCLUSIONS The application of colour science within dentistry has permitted th...
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ژورنال
عنوان ژورنال: Bulletin of the Agricultural Chemical Society of Japan
سال: 1960
ISSN: 1881-1272,0375-8397
DOI: 10.1271/bbb1924.24.405