Results 51 to 60 of about 320,689 (383)
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 +11 more
doaj +1 more source
SynOpen, 2022 Construction of all-carbon quaternary centres is an important task in organic synthesis. In spite of the challenges associated with Csp3–Csp3 bond construction in a sterically constrained environment, significant advances have been made in this area ...
Ani Deepthi +2 more
doaj +1 more source
Quaternary Hermitian linear complementary dual codes [PDF]
IEEE TRANSACTIONS ON INFORMATION THEORY, VOL. 66, 2020 2751-2759, 2019 The largest minimum weights among quaternary Hermitian linear complementary dual codes are known for dimension $2$. In this paper, we give some conditions for the nonexistence of quaternary Hermitian linear complementary dual codes with large minimum weights.
arxiv +1 more source
Journal of Taibah University for Science, 2021 Nanostructure such as quaternary alloy offers an unprecedented opportunity for alloy composition control in a wide range, unavailable with traditional epitaxial film materials.
Asaad T. Al-Douri +4 more
doaj +1 more source
Contributions of Quaternary botany to modern ecology and biogeography
Plant Ecology & Diversity, 2019 Quaternary (last 2.6 million years) botany involves studying plant megafossils (e.g. tree stumps), macrofossils (e.g. seeds, leaves), and microfossils (e.g. pollen, spores) preserved in peat bogs and lake sediments.
H. Birks
semanticscholar +1 more source
Journal of Maps, 2021 The Rodoretto Valley (about 25 km2) (Western Alps, NW Italy) shaped in the metamorphic bedrock, covered by Quaternary sediments, is involved in significant deep-seated gravitational slope deformation (DSGSD).
M. Gabriella Forno +3 more
doaj +1 more source
Morphostratigraphy of the Sázava river terraces in the Bohemian Massif
Acta Universitatis Carolinae Geographica, 2021 The results of geomorphological research into the Sazava river terraces are presented. This terrace system is characteristic by its variable structure which is conditioned by specific hydrodynamic processes that existed during the late Cenozoic evolution
Břetislav Balatka +2 more
doaj +1 more source
Relationship between the 2n-points binary and (3n-1)-points quaternary approximating subdivision schemes [PDF]
arXiv, 2023 Geometric objects are primarily represented using curves and surfaces and the subdivision schemes are the basic tools for these representations. This study is based on a new thought that there is a special relation between the binary and some kinds of the quaternary subdivision schemes. Due to the defined relation the quaternary subdivision schemes can
arxiv
Characteristics of the Kelch domain containing (KLHDC) subfamily and relationships with diseases
FEBS Letters, EarlyView.The Kelch protein superfamily includes 63 members, with the KLHDC subfamily having 10 proteins. While their functions are not fully understood, recent advances in KLHDC2's structure and role in protein degradation have highlighted its potential for drug development, especially in PROTAC therapies.
Courtney Pilcher +6 more
wiley +1 more source
Geologica Acta, 2019 Proboscia barboi and Proboscia curvirostris are two important diatom biostratigraphic markers from the high latitudes of the North Pacific and North Atlantic Oceans, dating back to the Pliocene-Pleistocene time.
J. Andrade +3 more
doaj +1 more source