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Graveyard Keeper is a graveyard-themed management simulation video game developed by independent Russian indie game studio Lazy Bear Games and published by tinyBuild. The game's alpha version was released for Microsoft Windows in May 2018, [ 1 ] followed by the regular release for Windows and Xbox One later that year. [ 2 ]
A tanning agent is used for: Leather tanning, the process of treating skins and hides of animals to produce leather; Sunless tanning, the effect of a suntan without the Sun; Tanning activator, chemicals that increase the effect of UV-radiation on human skin
The tanning activator coumarin is known to induce thymine dimers (cyclobutane pyrimidine dimers). [ 7 ] [ 8 ] Other Web sites state correctly that: "Coumarins produce photosensitivity therefore advise the patient to avoid direct sunlight after treatment.
Erythrulose is a similar agent contained in red raspberries that produces a short-lived reddish tan. The general tanning effect is usually improved when used in combination with DHA. Erythrulose also increases the occurrence of free radicals. [5] DHA may be contained in moisturizers with added fruit extracts sold as "maximizers".
Sunless tanning, also known as UV filled tanning, self tanning, spray tanning (when applied topically), or fake tanning, refers to the effect of a suntan without exposure to the Sun. Sunless tanning involves the use of oral agents (carotenids), or creams, lotions or sprays applied to the skin. [1]
Sun tanning or tanning is the process whereby skin color is darkened or tanned. It is most often a result of exposure to ultraviolet (UV) radiation from sunlight or from artificial sources, such as a tanning lamp found in indoor tanning beds.
The peak of Singapore's gambier trade was in the 1830s through 1850s, driven by demand from the British dyeing and leather tanning industries. [ 6 ] Diplomat Edmund Roberts noted that upon his visit to China in the 1830s, Chinese were using it for tanning , and noted that the uncaria gambir made "leather porous and rotten".
Lawsone strongly absorbs UV light, and aqueous extracts can be effective sunless tanning agents and sunscreens. Lawsone is a 1,4-naphthoquinone derivative, an analog of hydroxyquinone containing one additional ring. Lawsone isolation from Lawsonia inermis can be difficult due to its easily biodegradable nature. Isolation involves four steps: