Results 51 to 60 of about 1,797,826 (252)

A Late Glacial–Holocene Tephrochronology for Glacial Lakes in Southern Ecuador [PDF]

Quaternary Research, 2002
AbstractDespite the presence of numerous active volcanoes in the northern half of Ecuador, few, if any, distal tephras have been previously recognized in the southern one third of the country. In this article, we document the presence of thin (0.1–1.0-cm-thick) distal tephras comprising glass and/or phenocrysts of hornblende and feldspar in sediment ...
Donald T. Rodbell, Stefan Bagnato, Jeffrey C. Nebolini, Geoffrey O. Seltzer, Mark B. Abbott   +4 more
openaire   +1 more source

Quaternary Glacial Geology of Alta Ribagorqa Basin (Central Southern Pyrenees) [PDF]

, 2012
This paper is an abstract of the doctoral thesis presented by the autor at the University of Barcelona on September 1983. It constitutes a regional study about the Quatemary Glacial Geology in the Ribagorca high valleys.
Vilaplana, Joan Manuel
core   +3 more sources

Astronomical forcing shaped the timing of early Pleistocene glacial cycles

Communications Earth & Environment, 2023
Glacial cycles during the early Pleistocene are characterised by a dominant 41,000-year periodicity and amplitudes smaller than those of glacial cycles with ~100,000-year periodicity during the late Pleistocene. However, it remains unclear how the 41,000-
Yasuto Watanabe, Ayako Abe-Ouchi, Fuyuki Saito, Kanon Kino, Ryouta O’ishi, Takashi Ito, Kenji Kawamura, Wing-Le Chan   +7 more
doaj   +1 more source

Mitochondrial DNA signals of late glacial recolonization of Europe from near Eastern refugia

, 2012
Human populations, along with those of many other species, are thought to have contracted into a number of refuge areas at the height of the last Ice Age.
Reisberg T., Tamm, Erika, Karmin, M., Pereira, L., Al Zahery N., Houshmand M., Tamm, E, Macaulay V, Reisberg, T., Pala M., Gamble C., Villems R, Houshmand M, Macaulay, V., Karmin M., Hatina J, Reisberg, Tuuli, Gamble, Clive, Kashani, Baharak Hooshiar, Accetturo, M., Baird D, Woodward S. R., Woodward SR, Accetturo, M, Reidla, M, Sanati, Mohammad Hossein, Gamble, C, Davies W, Carossa, V., Karmin M, Achilli, A., Kashani, B.H., Reisberg, T, Carelli, Valerio, Macaulay, Vincent, Tamm E, Soares, Pedro, Achilli, A, Torroni, Antonio, Sanati M. H., Soares, P, Woodward, SR, Hooshiar Kashani, Baharak, Carossa, V, Torroni, A, Villems, Richard, Rychkov, Sergei, Rychkov S, Richards, MB, Metspalu E., Gandini, F., Karmin, Monika, Pereira, Joana B., Al Zahery N, Metspalu, E., Richards, M.B., PEREGO, UGO ALESSANDRO, Achilli A., Semino, O, Soares P., Olivieri, A, Soares P, Karmin, M, Angerhofer N, Carelli, V., Torroni A., Hatina J., Pala, M., Pereira L, Davies, W, Villems, R, Carelli V, Pereira, J.B., Perego, U.A., Davies, William, Richards MB, Gandini, F, Torroni, A., Reidla, Maere, Olivieri A., Olivieri, Anna, Hatina, J, Perego, Ugo A., Semino, O., Davies, W., Woodward, Scott R., Baird D., Richards M. B., Hooshiar Kashani B., Macaulay V., Villems R., Al-Zahery, N, Metspalu, E, Rychkov, S., Pereira L., Al-Zahery, N., Baird, Douglas, Reisberg T, Angerhofer, N, Pereira JB, Pereira, L, Gandini, Francesca, Gamble C, Sanati MH, Olivieri, A., Hatina, J., Accetturo, Matteo, Pereira, Luísa, Gamble, C., Houshmand, Massoud, Pala, M, Carossa, Valeria, Woodward, S.R., Reidla M, Hossein Sanati, M, Pala, Maria, Angerhofer N., Semino O., Al-Zahery, Nadia, Metspalu, Ene, Davies W., Macaulay, V, Perego U. A., Houshmand, M., Angerhofer, N., Sanati, M.H., Houshmand, M, Tamm E., Pereira, JB, Baird, D, Metspalu E, Achilli, Alessandro, Angerhofer, Norman, Carelli, V, Semino, Ornella, Villems, R., Pereira J. B., Carossa V., Reidla M., Rychkov S., Hooshiar Kashani, B, Perego, UA, Hatina, Jiři, Richards, Martin B., Baird, D., Soares, P., Gandini F., Accetturo M., Rychkov, S, Pala, Maria; id_orcid, Richards, Martin B.; id_orcid   +150 more
core   +1 more source

Abrupt changes in deep Atlantic circulation during the transition to full glacial conditions [PDF]

, 2013
Six Ocean Drilling Program (ODP) sites, in the Northwest Atlantic have been used to investigate kinematic and chemical changes in the ‘Western Boundary Undercurrent’ (WBUC) during the development of full glacial conditions across the Marine Isotope Stage
Becker, J, Hall, I. R., Becker, J., Thornalley, David J. R., Barker, S., Hall, Ian Robert, Barker, Stephen, Barker, S, Knorr, G, Thornalley, D., Becker, Julia, Hall, IR, Knorr, Gregor, Thornalley, DJR, Hall, Ian R.   +14 more
core   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

LAKE ONEGO LEVEL CHANGES IN THE LATE AND POSTGLACIAL TIMES AS INFERRED FROM THE STUDY OF THE SEDIMENT SEQUENCE ON BOLSHOY KLIMENETSKY ISLAND

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
The paper presents and discusses the results of the lithological, chronological and bio­stratigraphic study of the sediment sequence on Bolshoy Klimenetsky Island, the larg­est island within the Kizhi Archipelago.
Anna Ludikova, Denis Kuznetsov
doaj   +1 more source

Eastern Mediterranean surface water temperatures and d18O composition during deposition of sapropels in the late Quaternary [PDF]

, 2003
Water column stratification increased at climatic transitions from cold to warm periods during the lateQuaternary and led to anoxic conditions and sapropel formation in the deep eastern Mediterranean basins.
Struck, U., Erlenkeuser, H., Emeis, K.C., Rossignol-Strick, M., Howell, M. W., Emeis, K.-C., Oba, T., Kroon, Dirk, Schulz, H., Kroon, D., Mackensen, Andreas, Sakamoto, T., Emeis, K. C., Koizumi, I., Ishizuka, S., Mackensen, A., Howell, M.W.   +16 more
core   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

Molecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce, Simone Bini, Marialuisa Sponziello, Giorgio Grani, Giulia Fiscon, Paola Paci, Lorenzo Farina, Rosa Falcone, Valentina Maggisano, Sebastiano Filetti, Cosimo Durante, Antonella Verrienti   +11 more
wiley   +1 more source

PALEOGEOGRAPHY OF THE ZAONEZHYE PENINSULA IN THE LATE PLEISTOCENE AND HOLOCENE

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The paper summarizes the results of long-term paleogeographical research of the Zaonezhye Peninsula conducted by the staff of the Institute of Biology and Institute of Geology of the Karelian Research Centre RAS, including the authors of the article. The
Lyudmila Filimonova, Nadezhda Lavrova
doaj   +1 more source