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  • Choose a cage with a reasonable structure, such as a tray under the cage, so that the dog can relieve itself directly inside the cage. It’s easy for the owner to clean up.

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  • The optional height of this type of wire mesh is 1 meter, 1.2 meters, 1.5 meters, 1.8 meters, 2 meters. The latter three are the most commonly used, too low to achieve the fence protection effect. The mesh size is divided into 3 cm and 6 cm, and the vast majority of 6 cm is used.

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  • Post time: 23-12-22

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  • For single-layer wound non-rotating wire rope, it is necessary to strictly abide by the above principles, otherwise it is easy to cause permanent deformation of wire rope structure; In the case of multilayer winding, the rotation of the rope is determined by the orientation of the reel’s rope groove to lay the foundation for the next layer. The friction between the wire rope and the extrusion pressure of the multi-layer winding drum are large, and the disorderly rope phenomenon is easy to occur. Therefore, the wire rope with a diameter slightly smaller than the pitch of the rope groove and the diameter of the rope groove should be selected to add the touch area between the wire rope and the drum.

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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.

  • This precipitate is not suitable for a pigment until it is filtered, dried, crushed, heated to a high temperature, and quenched in cold water. The second heating in a muffle furnace at 725 C produces crystals of the right optical size.

  • Are there any alternatives to toothpastes with titanium dioxide?

  • 5. Is EFSA banning titanium dioxide? 

  • The development of efficient separation and purification methods further enhances the manufacturing process. Technologies such as centrifugation, filtration, and solvent extraction are utilized to remove impurities and residual reactants, ensuring that the final product meets the rigorous standards demanded by various industries.
  • Titanium dioxide safety is evaluated by regulatory agencies all over the world based on scientific studies.

  • States looking to ban titanium dioxide as a food additive

  •  The preferred solution is: in the leaching step, each cubic meter of ammonia-ammonium sulfate solution is added 0. 05kg~0. 1kg of sodium dodecylbenzenesulfonate, sodium dodecylbenzenesulfonate reduces the surface energy of the solution .