02373nam 2200373 450 991067402330332120230629071934.0(CKB)4920000000094746(NjHacI)994920000000094746(EXLCZ)99492000000009474620230629d2018 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierPlant extracts in skin care products /edited by Beatriz P.P. Oliveira and Francisca RodriguesBasel, Switzerland :MDPI - Multidisciplinary Digital Publishing Institute,[2018]©20181 online resource (144 pages) illustrations3-03897-160-X Includes bibliographical references.Currently, in the cosmetic industry, there is an increasing interest in natural extracts, particularly plant extracts. The inclusion of antioxidants in topical formulations may contribute to minimize skin oxidative stress, which has been associated with aging. Many herbal agents used in cosmetics have been selected by a process of 'trial and error' and, thus, are used on the basis of experience rather than of experimental investigation. Nevertheless, there is now a growing scientific evidence that plants possess a vast and complex arsenal of active ingredients able not only to calm or smooth but also to actively restore, heal, and protect the human skin. In addition, plant extracts may contain compounds with antimicrobial or other beneficial properties, influencing the formulation of natural and non-chemical cosmetic products. The public trend towards natural and sustainable products is ongoing. Although the term "plant extract" inherently purports their beneficial and benign properties, these products could have adverse reactions in individuals. Therefore, it is essential to ensure quality and safety of these extracts in cosmetic products before embarking on the more arduous task of ensuring efficacy.Herbal cosmeticsHerbal cosmetics.646.72Oliveira Beatriz P. P.Rodrigues FranciscaNjHacINjHaclBOOK9910674023303321Plant Extracts in Skin Care Products3057819UNINA04466nam 2200613 450 991083043830332120211023144317.01-118-66970-33-642-86600-X10.1007/978-3-642-86600-5(CKB)3400000000109626(SSID)ssj0000904766(PQKBManifestationID)11530020(PQKBTitleCode)TC0000904766(PQKBWorkID)10922880(PQKB)10705926(DE-He213)978-3-642-86600-5(MiAaPQ)EBC3098152(MiAaPQ)EBC6550247(Au-PeEL)EBL6550247(PPN)189967544(OCoLC)811852029(EXLCZ)99340000000010962620211023d1986 uy 0engurnn#008mamaatxtccrEnvironmental hydraulics stratified flows /Flemming Bo Pedersen1st ed. 1986.Berlin, Heidelberg :Springer-Verlag,[1986]©19861 online resource (VIII, 278 p.)Lecture Notes on Coastal and Estuarine Studies ;Volume 18Bibliographic Level Mode of Issuance: Monograph3-540-16792-7 Includes bibliographical references at the end of each chapters and index.I Non-Miscible Stratified Flows -- 1. Introduction -- 2. Pressure Conditions and Potential Energy -- 3. The Motion of Non-Miscible Stably Stratified Fluids -- II Miscible Stratified Flows -- 4. The Equations of Continuity and Motion for Miscible Stratified Flows -- 5. IRfT = The Bulk Flux Richardson Number -- 6. Entrainment (VE) -- 7. Interfacial Shear Stress (?i) -- 8. Dense Bottom Currents -- 9. Free Penetrative Convection -- 10. Wind-Driven Stratified Flow -- 11. Horizontal Buoyant Flow -- 12. Vertical Buoyant Jets and Plumes -- III Case Studies -- 14. Sediment Laden Buoyancy Jets -- 15. Dense Bottom Currents in Rotating Ocean -- 16. Laboratory Experiments on Entrainment due to Free Convection -- 17. Steady Wind Set-up in Prismatic Lakes -- 18. Division of the River Neva. How will it influence the Baltic Sea, the Belt and Cattegat -- 19. Surface Jet at Small Richardson Numbers -- 20. Internal Seiches in a Stratified Sill Fjord -- 21. On Arctic Lakes. A thermodynomic and hydrodynamic investigation -- 22. A Multipurpose Stratified Flow Flume.The present lecture notes cover a first course in th~ most common types of stratified flows encountered in Environ­ mental Hydraulics. Most of the flows are buoyancy flows, i.e. currents in which gravity acts on small density differences. Part I presents the basic concepts of stagnant, densit- stratified water, and of flowing non-miscible stratified fluids. The similarity to the (presumed) well-known open channel flow, subject to a reduced gravity, is illustrated. Part II treats the miscible density stratified flows. In outlining the governing equations, the strong coupling between the turbulence (the mixing) and the mean flow is emphasized. The presentation and discussions of the basic governing equa­ tions are followed by illustrative examples. Separate chapters are devoted to Dense Bottom Currents, Free Penetrative Convec­ tion, Wind-driven Stratified Flow, Horizontal Buoyancy Flow and Vertical jet/plumes. Part III presents some examples of practical problems solved on the basis of knowledge given in the present lecture notes. It is the author's experience that the topics treated in chapter 8 and in the subsequent chapters are especially well­ suited for self-tuition, followed by a study-circle. ACKNOWLEDGEMENT The author has benefited by the valuable help of his col­ legues at the Institute of Hydrodynamics and Hydraulic Engin­ eering, the Technical University of Denmark, especially our librarian Mrs. Kirsten Dj¢rup, our secretary Mrs. Marianne Lewis and our technical draftsman Mrs. Liselotte Norup.Lecture notes on coastal and estuarine studies ;Volume 18.Environmental hydraulicsStratified flowEnvironmental hydraulics.Stratified flow.627Pedersen Flemming Bo1939-845923MiAaPQMiAaPQMiAaPQBOOK9910830438303321Environmental hydraulics1888802UNINA