So far we were writing about ceramides in plural. It's because there are lots of different ceramides, a 2014article writes that currently 12 base classes of ceramides are known with over 340 specific species.Chemically speaking, ceramides are the connection of a fatty acid and a sphingoid base and both parts can have different variations that result in the different types of ceramides. B. Mirhosseini-Eshkevari, M. A. Ghasemzadeh and J. Safaei-Ghomi, Res. Chem. Intermed., 2015, 41, 7703–7715 CrossRef CAS. Haxhillazi, Gentiana (2003). Preparation, Structure and Vibrational Spectroscopy of Tetraperoxo Complexes of Cr V+, V V+, Nb V+ and In the United States, trivalent chromium (Cr(III)) ion is considered an essential nutrient in humans for insulin, sugar, and lipid metabolism. [8] However, in 2014, the European Food Safety Authority, acting for the European Union, concluded that there was insufficient evidence for chromium to be recognized as essential. [9] As for using ALA topically, we have to say that its role and effects seem to be less direct than with LA. ALA's main role in the skin appears to be modulating the immune response of the epidermis. This is probably helpful for inflammatory skin diseases but most studies examine ALA as an oralsupplement and not when applied topically. One exception, we could find, is a study that found that topically applied ALA has nice spot-fading abilities.

X. Qian, Z. Chen, X. Yang, W. Zhao, C. Liu, T. Sun, D. Zhou, Q. Yang, G. Wei and M. Fan, J. Cleaner Prod., 2020, 249, 119335 CrossRef CAS. Heimbrod, Camille (May 23, 2018). "LISTEN: Composer Ramin Djawadi Covers Wu-Tang Clan's 'C.R.E.A.M.' For 'Westworld' ". Music Times . Retrieved April 20, 2019.Mourigal, M. et al. Fractional spinon excitations in the quantum Heisenberg antiferromagnetic chain. Nature Phys. 9, 435–441 (2013). British single certifications – Wu Tang Clan – C.R.E.A.M." British Phonographic Industry . Retrieved May 5, 2023.

Chromium(III) salts, especially chrome alum and chromium(III) sulfate, are used in the tanning of leather. The chromium(III) stabilizes the leather by cross linking the collagen fibers. [77] Chromium tanned leather can contain between 4 and 5% of chromium, which is tightly bound to the proteins. [39] Although the form of chromium used for tanning is not the toxic hexavalent variety, there remains interest in management of chromium in the tanning industry. Recovery and reuse, direct/indirect recycling, [78] and "chrome-less" or "chrome-free" tanning are practiced to better manage chromium usage. [79]Ok, so now we know what ceramides are, let's see what they do in our skin: research shows clearly that they play a super important role in keeping the skin barrier healthy and the skin hydrated. If ceramides in the skin are decreased, more water can evaporate from the skin and there is less water remaining in the skin. So ceramides form kind of a "water-proof" protecting layerand make sure that our skin remains nice and hydrated. The phrase cream has become a slang term for money, [31] [32] [33] and it has been used abundantly by other rappers since then. [33] Z.-J. Li, E. Hofman, J. Li, A. H. Davis, C.-H. Tung, L.-Z. Wu and W. Zheng, Adv. Funct. Mater., 2018, 28, 1704288 CrossRef. Food composition databases such as those maintained by the U.S. Department of Agriculture do not contain information on the chromium content of foods. [112] A wide variety of animal and vegetable foods contain chromium. [107] Content per serving is influenced by the chromium content of the soil in which the plants are grown, by foodstuffs fed to animals, and by processing methods, as chromium is leached into foods if processed or cooked in stainless steel equipment. [113] One diet analysis study conducted in Mexico reported an average daily chromium intake of 30 micrograms. [114] An estimated 31% of adults in the United States consume multi-vitamin/mineral dietary supplements, [115] which often contain 25 to 60 micrograms of chromium.

a b c Erlewine, Stephen Thomas. "Wu-Tang Clan – Biography & History". AllMusic. Archived from the original on August 17, 2019 . Retrieved August 17, 2019. The 500 Greatest Songs of All Time: Wu-Tang Clan, 'C.R.E.A.M.' ". Rolling Stone. September 15, 2021 . Retrieved September 16, 2021.Adaso, Henry (December 12, 2018). "The 100 Best Rap Songs of All Time". ThoughtCo. Archived from the original on April 17, 2019 . Retrieved April 20, 2019. Lake, B., Tennant, D. A., Frost, C. D. & Nagler, S. E. Quantum criticality and universal scaling of a quantum antiferromagnet. Nature Mater. 4, 329–334 (2005). Weast, Robert (1984). CRC, Handbook of Chemistry and Physics. Boca Raton, Florida: Chemical Rubber Company Publishing. pp.E110. ISBN 0-8493-0464-4. Y. Zhang, M. Xia, M. Li, Q. Ping, Z. Yuan, X. Liu, H. Yin, S. Huang and Y. Rao, J. Org. Chem., 2021, 86, 15284–15297 CrossRef CAS PubMed. Bos, Laurence William (1969). "Optical properties of chromium-manganese alloys". Iowa State University Digital Repository. Iowa State University. Bibcode: 1969PhDT.......118B . Retrieved 4 November 2018.

Chromium metal is valued for its high corrosion resistance and hardness. A major development in steel production was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Stainless steel and chrome plating ( electroplating with chromium) together comprise 85% of the commercial use. Chromium is also greatly valued as a metal that is able to be highly polished while resisting tarnishing. Polished chromium reflects almost 70% of the visible spectrum, and almost 90% of infrared light. [6] The name of the element is derived from the Greek word χρῶμα, chrōma, meaning color, [7] because many chromium compounds are intensely colored. S. N. Raja, Y. Bekenstein, M. A. Koc, S. Fischer, D. Zhang, L. Lin, R. O. Ritchie, P. Yang and A. P. Alivisatos, ACS Appl. Mater. Interfaces, 2016, 8, 35523–35533 CrossRef CAS PubMed. NIST Center for Neutron Research, National Institute of Standards and Technology, 20899 Gaithersburg, USAIn the current paper, a hexamethylenetetramine-based ionic liquid immobilized on the MIL-101(Cr) metal–organic framework was successfully synthesized as a novel, efficient, and recoverable catalyst for the synthesis of pyrido[2,3- d:5,6- d′]dipyrimidine derivatives via the reaction of barbituric acid derivatives, 6-aminouracil/6-amino-1,3-dimethyl uracil, and aromatic aldehydes under solvent-free conditions. Characterization of the catalyst was carried out using various methods such as field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectrophotometry (FT-IR), and Brunauer–Emmett–Teller (BET). Efficient transformation, short reaction times, excellent yields, easy product isolation, mild conditions, and the potential high recyclability of the organocatalyst are the main features of this protocol. M. A. Ghasemzadeh, M. Azimi-Nasrabad, S. Farhadi and B. Mirhosseini-Eshkevari, J. Organomet. Chem., 2019, 900, 120935–120942 CrossRef. de Vries, M. A., Mclaughlin, A. C. & Bos, J.-W. G. Valence bond glass on an fcc lattice in the double perovskite Ba2YMoO6 . Phys. Rev. Lett. 104, 177202 (2010). T. Hu, Q. Jia, S. He, S. Shan, H. Su, Y. Zhi and L. He, J. Alloys Compd., 2017, 727, 114–122 CrossRef CAS. Chromic acid is a powerful oxidizing agent and is a useful compound for cleaning laboratory glassware of any trace of organic compounds. [89] It is prepared by dissolving potassium dichromate in concentrated sulfuric acid, which is then used to wash the apparatus. Sodium dichromate is sometimes used because of its higher solubility (50 g/L versus 200 g/L respectively). The use of dichromate cleaning solutions is now phased out due to the high toxicity and environmental concerns. Modern cleaning solutions are highly effective and chromium free. [90]