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CSPI’s Chemical Cuisine is the web’s definitive rating of the chemicals used to preserve foods and affect their taste, texture, or appearance. Besides titanium dioxide, the group recommends avoiding artificial sweeteners like aspartame, acesulfame potassium, and sucralose, as well as synthetic food dyes like Yellow 5 and Red 3. CSPI and others have recently asked the Food and Drug Administration to ban the latter dye in foods and ingested drugs because the FDA has already determined that it is a carcinogen unsafe for use in cosmetics.

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This article discusses the discovery of phosphorescent lithopone on watercolor drawings by American artist John La Farge dated between 1890 and 1905 and the history of lithopone in the pigment industry in the late 19th and early 20th centuries. Despite having many desirable qualities for use in white watercolor or oil paints, the development of lithopone as an artists’ pigment was hampered by its tendency to darken in sunlight. Its availability to, and adoption by, artists remain unclear, as colormen's trade catalogs were generally not explicit in describing white pigments as containing lithopone. Further, lithopone may be mistaken for lead white during visual examination and its short-lived phosphorescence can be easily missed by the uninformed observer. Phosphorescent lithopone has been documented on only one other work-to-date: a watercolor by Van Gogh. In addition to the history of lithopone's manufacture, the article details the mechanism for its phosphorescence and its identification aided by Raman spectroscopy and spectrofluorimetry.

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  • - Energy Independence Homeowners can generate their own electricity, reducing reliance on grid power and protecting against energy cost fluctuations.

  • The Cost of a Complete Solar Panel Set An Investment for the Future


  • Factors Affecting Solar Panel Rates


  • One of the significant advantages of Felicity solar inverters is their compatibility with a wide range of solar panel brands and systems. This versatility makes them a popular choice for installers and users alike, as they can be integrated into both new and existing solar setups. Whether you are powering a small residential system or a large commercial installation, there is a Felicity inverter model that can meet your needs.


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  • 25. Solar-Powered Wi-Fi Garbage Bins

  • Installing solar panels on an RV can be a DIY project, but it's essential to follow the manufacturer’s instructions carefully or consult a professional if you’re uncertain. Proper installation ensures optimal performance and longevity. Maintenance is relatively simple; cleaning the panels occasionally and checking connections routinely can keep systems operating smoothly.


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  • One of the primary advantages of medium-sized solar panels is their space efficiency. For homeowners or businesses that may not have extensive rooftop space, medium-sized panels can deliver a substantial amount of energy without requiring an extensive area. This feature is essential in urban settings where space can be a significant constraint. By opting for medium-sized panels, property owners can maximize energy production while minimizing the footprint of their solar installations.


  • Understanding the Basics


  • The Role of Solar Panels