Results 21 to 30 of about 124,885 (293)

Do the polyphenolic compounds from natural products can protect the skin from ultraviolet rays?

Results in Chemistry, 2022
Excessive exposure to the sun is a major cause that augment the skin cancer, erythema, edema, abnormal pigmentation and finally suppress the immune system.
Sara Ghazi
doaj   +1 more source

Sunscreens: Time to think beyond UV rays

Pigment International, 2018
It has been known to us that solar radiation contributes to photoaging. Until recently, it was thought to be due to ultraviolet rays alone. However, a growing number of evidence confirms that visible and infrared (IR) rays also contribute to extrinsic ...
Chitralekha Keisham, Nelson Elangbam, Rashmi Sarkar   +2 more
doaj   +1 more source

Some of the uses of ultra-violet rays in dermatology

South African Journal of Physiotherapy, 1953
No abstract available.
R. M.B MacKenna, T. Wareham
doaj   +1 more source

Potensi Ekstrak Bawang Hitam sebagai Tabir Surya terhadap Paparan Sinar Ultraviolet

Keluwih, 2020
—Skin cancer is in the third rank in Indonesia. One of the causes of skin cancer is excessive exposure to ultraviolet rays from the sun. Ultraviolet radiation forms Reactive Oxygen Species that disrupts the regulation of the cell-matrix and causes ...
Putu Srinata Dampati, Elvina Veronica
doaj   +1 more source

Mass-loss rates for transiting exoplanets

, 2011
Exoplanets at small orbital distances from their host stars are submitted to intense levels of energetic radiations, X-rays and extreme ultraviolet (EUV).
Anderson, Anderson, Asplund, Bakos, Bakos, Bakos, Bakos, Bakos, Bakos, Baraffe, Baraffe, Baraffe, Barge, Barros, Batalha, Bonomo, Bordé, Borucki, Bouchy, Bouchy, Bouchy, Bouchy, Brown, Buchhave, Burke, Butler, Cabrera, Cecchi-Pestellini, Charbonneau, Christian, Christiansen, Collier Cameron, Collier-Cameron, D. Ehrenreich, Davis, Deeg, Deleuil, Dunham, Ehrenreich, Ehrenreich, Enoch, Fossati, Fridlund, Gandolfi, García-Muñoz, Gillon, Gillon, Hartman, Hartman, Hartman, Hebb, Hebb, Hellier, Hellier, Hellier, Holman, Holmström, Hébrard, J.-M. Désert, Jackson, Jaritz, Jenkins, Johns-Krull, Joshi, Kashyap, Kipping, Koch, Kovács, Lammer, Lammer, Latham, Latham, Laughlin, Lecavelier des Etangs, Lecavelier des Etangs, Lecavelier des Etangs, Li, Lin, Linsky, Lister, Léger, Maxted, McCullough, Moutou, Moutou, Noyes, Pillitteri, Pont, Poppenhaeger, Pál, Pál, Queloz, Queloz, Queloz, Rauer, Reiners, Sanz-Forcada, Sato, Saumon, Schporer, Simpson, Skillen, Smalley, Snellen, Sozzetti, Stone, Street, Tian, Torres, Torres, Torres, Torres, Valencia, Vidal-Madjar, Vidal-Madjar, Vidal-Madjar, Watson, West, Wilson, Winn, Winn, Wood, Yelle, Yelle   +123 more
core   +1 more source

Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space

, 2010
Astronomically, there are viable mechanisms for distributing organic material throughout the Milky Way. Biologically, the destructive effects of ultraviolet light and cosmic rays means that the majority of organisms arrive broken and dead on a new world.
A.A. Sharov, A.D. Panov, A.J. Nicastro, B.C. Clark, C. Mileikowsky, C. Woese, C.E. Cleland, C.T. Russell, D. Warmflash, E. Argyle, E. Rabbow, E. Willerslev, E.V. Koonin, F. Hoyle, F. Hoyle, F.C. Adams, F.H.C. Crick, G. Basri, G. Horneck, G. Horneck, G. Horneck, G. Horneck, G. Horneck, G. Marcy, H. Kuhn, H.D. Mennigman, H.J. Melosh, H.J. Melosh, J. Nagyvary, J. Overmann, J. Parnell, J. Scalo, J. Secker, J.D. Barrow, J.M. Greenberg, J.M. Overduin, J.T. Trevors, J.W. Schopf, K. Dose, K. Dose, L. Spitzer, M. Burchell, M. Burchell, M. Valtonen, M.H. Hart, M.K. Wallis, N. Meyer-Vernet, N.J. Dimmock, P. Weber, P.S. Wesson, P.S. Wesson, P.S. Wesson, P.S. Wesson, Paul S. Wesson, R. Shapiro, R.D. Noetzel, R.E. Dickerson, R.H. Vreeland, R.W. Court, S. Arrhenius, Steering Group, T. Lindahl, W.K. Hartmann, W.L. Nicholson, W.M. Napier, Z.P. Zagorski   +65 more
core   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Intensive HST, RXTE and ASCA Monitoring of NGC 3516: Evidence Against Thermal Reprocessing

, 1999
During 1998 April 13-16, NGC 3516 was monitored almost continuously with HST for 10.3 hr in the UV and 2.8 d in the optical, and simultaneous RXTE and ASCA monitoring covered the same period.
Anuradha Koratkar, Bradley M. Peterson, Clavel J., Dan Maoz, Done C., George I., Ghisellini G., Golev V., Guilbert P. W., J. Michael Shull, Julian Krolik, Kirpal Nandra, Matthew Malkan, Michael Goad, Paul O’Brien, Rick Edelson, Robert Warwick, Rokaki E., Shakura N., Simon Vaughan, Stefan Collier   +20 more
core   +2 more sources

A Brief History of AGN [PDF]

, 1999
Astronomers knew early in the twentieth century that some galaxies have emission-line nuclei. However, even the systematic study by Seyfert (1943) was not enough to launch active galactic nuclei (AGN) as a major topic of astronomy.
Antonucci R. A. R., Baldwin J. A., Bennett A. S., Blandford R. D., Collin-Souffrin S., Collin-Souffrin S., Collin-Souffrin S., Collin-Souffrin S., Courvoisier T. J.-L., Edge D. O., Elvis M., Fath E. A., Frank J., Ginzburg V. L., Gregory A. Shields, Heckman T. M., Hoyle F., Hoyle F., Kellermann K. I., Marshall N., Matthews T. A., Mills B. Y., Morris D., Orr M. J. L., Penston M. V., Pounds K., Pringle J. E., Ryle M., Ryle M., Scott P. F., Setti G., Shakura N. I., Shields G. A., Shklovskii I. S., Shklovskii I. S., Sholomitsky G. B., Slipher V. M., Souffrin S., Souffrin S., Terlevich R., Ulrich M.-H., Wilkes B. J., Wilkes B. J.   +42 more
core   +2 more sources

Anchorage‐independent and faster growth in clonal population from UV‐irradiated NER‐deficient cells

FEBS Open Bio, EarlyView.
UV‐irradiated cells expressing a DDB2 mutant protein unable to interact with PCNA (DDB2PCNA‐) form clones able to grow without anchorage. Different experimental approaches reveal heterogeneity in cell cycle regulation and drug response within these clones, emphasizing the crucial role of the DDB2‐PCNA interaction in preventing cellular transformation ...
Paola Perucca, Anna Tricarico, Martina Furfaro, Priyam Ghosh, Ennio Prosperi, Lucia Anna Stivala, Ornella Cazzalini   +6 more
wiley   +1 more source