Results 41 to 50 of about 555,071 (331)

Enantioselective Total Synthesis of Macfarlandin C, a Spongian Diterpenoid Harboring a Concave-Substituted cis-Dioxabicyclo[3.3.0]octanone Fragment. [PDF]

, 2020
The enantioselective total synthesis of the rearranged spongian diterpenoid (-)-macfarlandin C is reported. This is the first synthesis of a rearranged spongian diterpenoid in which the bulky hydrocarbon fragment is joined via a quaternary carbon to the ...
Allred, Tyler K, Dieskau, André P, Lackner, Gregory L, Overman, Larry E, Zhao, Peng   +4 more
core   +2 more sources

Microstratigraphic Records as Tools for the Detection of Climatic Changes in Tana di Badalucco Cave (Liguria, NW Italy)

Geosciences, 2019
Tana di Badalucco cave is located in Imperia (Liguria, Italy), not far from the French border. This site is scarcely known and it has never been studied accurately, even though different archaeological excavations have returned really important elements,
Eleonora Sessa, Ivano Rellini, Antonella Traverso, Irene Molinari, Giulio Montinari, Guido Rossi, Marco Firpo   +6 more
doaj   +1 more source

Geomorphic signal of active faulting at the northern edge of Lut Block. Insights on the kinematic scenario of Central Iran [PDF]

, 2016
Recent works documented Neogene to Quaternary dextral strike-slip tectonics along the Kuh-e-Sarhangi and Kuh-e-Faghan intraplate strike-slip faults at the northern edge of the Lut Block of Central Iran, previously thought to be dominated by sinistral ...
Claudio, Faccenna, DELLA SETA, Marta, Domenico, Cosentino, Federico, Rossetti, Gabriele, Calzolari, Gianluca, Vignaroli, Reza, Nozaem   +6 more
core   +1 more source

Evolution of Early Pleistocene fluvial systems in central Poland prior to the first ice sheet advance – a case study from the Bełchatów lignite mine

Geologos, 2017
Deposits formed between the Neogene/Pleistocene transition and into the Early Pleistocene have been studied, mainly on the basis of drillings and at rare, small outcrops in the lowland part of Polish territory.
Goździk Jan, Zieliński Tomasz
doaj   +1 more source

Geomorphology of the northern sector of the Alfambra-Teruel depression (Iberian ranges, NE Spain)

Journal of Maps, 2019
The area of Alfambra (NE Spain) is very representative of the relief evolution of the Eastern Iberian ranges. The geomorphological cartography (Main Map) includes the northern sector of the Alfambra-Teruel Neogene depression and its mountainous ...
Miguel Sánchez-Fabre, José Luis Peña-Monné, María Marta Sampietro-Vattuone   +2 more
doaj   +1 more source

THE ITALIAN QUATERNARY VOLCANISM

, 2023
Volcanic products undoubtedly represent an im-portant part of the Quaternary deposits in Italy. For this reason, we have decided to take the opportunity offered by the INQUA conference to be held in Rome in 2023 to present a review of the state of the art and knowledge of the Italian Quaternary volcanism.
3. Branca S, Cinquegrani A., Cioni R., Conte A. M., Conticelli S., De Astis G., de Vita S., De Rosa R., Di Vito M. A., Donato P., Forni F., Francalanci L., Gaeta M., Giaccio B., Giordano G., Giuffrida M., Isaia R., Lucchi F., Marra F., Massaro S., Nicotra E., Palladino D. M., Perinelli C., Petrosino P., Pistolesi M., Sepulveda-Birke J. P., Sottili G., Romagnoli C., Rotolo S., Sulpizio R., Tranne C. A., Viccaro M.   +31 more
openaire   +4 more sources

Quaternary Layered Ni-Rich NCMA Cathode for Lithium-Ion Batteries

ACS Energy Letters, 2019
Li[Ni1–x–yCoxAly]O2 (NCA) and Li[Ni1–x–yCoxMny]O2 (NCM) cathodes have been the archetypes of current high-energy-density cathodes for Li-ion batteries.
Un-Hyuck Kim, Liang-Yin Kuo, P. Kaghazchi, C. Yoon, Yang‐Kook Sun   +4 more
semanticscholar   +1 more source

Late Quaternary Variations in the South American Monsoon System as Inferred by Speleothems—New Perspectives Using the SISAL Database

Quaternary, 2019
Here we present an overview of speleothem δ18O records from South America, most of which are available in the Speleothem Isotopes Synthesis and Analysis (SISAL_v1) database.
Michael Deininger, Brittany Marie Ward, Valdir F. Novello, Francisco W. Cruz   +3 more
doaj   +1 more source

More water-soluble brown carbon after the residential “coal-to-gas” conversion measure in urban Beijing

npj Climate and Atmospheric Science, 2023
The implementation of air pollution reduction measures has significantly reduced the concentration of atmospheric fine particles (PM2.5) in Beijing, among which the “coal-to-gas” conversion measures may play a crucial role.
Wei Yuan, Ru-Jin Huang, Jincan Shen, Kai Wang, Lu Yang, Ting Wang, Yuquan Gong, Wenjuan Cao, Jie Guo, Haiyan Ni, Jing Duan, Thorsten Hoffmann   +11 more
doaj   +1 more source

A Synthesis Method for Quaternary Quantum Logic Circuits

, 2012
Synthesis of quaternary quantum circuits involves basic quaternary gates and logic operations in the quaternary quantum domain. In this paper, we propose new projection operations and quaternary logic gates for synthesizing quaternary logic functions. We
Chakrabarti, Amlan, Mandal, Sudhindu Bikash, Sur-Kolay, Susmita   +2 more
core   +1 more source