Results 141 to 150 of about 25,942 (315)

The mineral and isotopic signatures of glacially eroded sediments exported from Hudson Strait to the Labrador Sea during Hudson Strait Heinrich events H0 to H4

Journal of Quaternary Science, EarlyView.
ABSTRACT The sediment signature of glacial erosion products exported from Hudson Strait to the Labrador Sea during Hudson Strait Heinrich (HS‐H) events is evaluated using four distinct proxies: paired δ18Ο and δ13C data on the carbonate fraction, εNd and U–Pb isotopes in the silicate fraction, the mineral composition of the <2 mm bulk sediment fraction,
John T. Andrews, David J. W. Piper, Matthew E. Kirby, Donald C. Barber   +3 more
wiley   +1 more source

Almost Everywhere Convergence of Varying Parameter Setting Cesàro Means of Fourier Series With Respect to Walsh–Kaczmarz System

Annales Mathematicae Silesianae
In this paper, the almost everywhere convergence of Cesàro means of Walsh–Kaczmarz–Fourier series in a varying parameter setting is investigated. In particular, we define subsequence ℕαn,q{{\mathbb{N}}_{{{\alpha }_{n}},q}} of natural numbers and prove ...
Adimasu Anteneh Tilahun
doaj   +1 more source

Isomorphism of the Toeplitz 𝐶*-algebras for the Hardy and Bergman spaces on certain Reinhardt domains [PDF]

, 1992
Albert Jeu-Liang Sheu
openalex   +1 more source

Seasonal patterns in B‐vitamins and cobalamin co‐limitation in the Northwest Atlantic

Limnology and Oceanography, EarlyView.
Abstract B‐vitamins are important co‐enzymes that have long been hypothesized to play key roles in marine ecosystems. However, environmental measurements remain scarce, which limits our understanding of their potential impact. Here, we present mass spectrometry‐based measurements of B‐vitamins (B1, B2, B3, B5, B6, B12) and related vitamers along a ...
Catherine Bannon, Patrick L. White, Elden Rowland, Kiran J. More, Anna Gleason, Megan Roberts, Emmanuel Devred, Lindsay Beazley, Julie LaRoche, Erin M. Bertrand   +9 more
wiley   +1 more source

Hyponormal Toeplitz Operators and Extremal Problems of Hardy Spaces [PDF]

, 1993
Takahiko Nakazi, Katsutoshi Takahashi
openalex   +1 more source

Autonomous, high‐frequency and long‐term monitoring of substrate temperature in rocky intertidal zones

Limnology and Oceanography: Methods, EarlyView.
Abstract Intertidal zones are characterized by complex and dynamic thermal mosaics, where organisms experience extreme temperature variations influenced by microclimatic factors. However, accurately monitoring rocky shore temperatures over the long term remains challenging due to the limitations of conventional temperature loggers.
Luís Pereira, Rui Seabra, Rita da Silva, Bruno Loureiro, Fernando P. Lima   +4 more
wiley   +1 more source

On the L p-boundedness of Calderón-Zygmund operators

Advanced Nonlinear Studies
The main result in this paper is that, for singular integral operators associated with standard kernels, local L 1-estimates imply global L p-estimates for every p ∈ (1, ∞).
Mitrea Dorina, Mitrea Marius
doaj   +1 more source

Weighted composition semigroups on Hardy spaces

, 1986
Aristomenis G. Siskakis
openalex   +1 more source

Multipliers on weighted Hardy spaces over locally compact Vilenkin groups, I [PDF]

, 1990
C. W. Onneweer, T. S. Quek
openalex   +1 more source

Metaplectic operators with quasi‐diagonal kernels

Mathematische Nachrichten, EarlyView.
Abstract Metaplectic operators form a relevant class of operators appearing in different applications, in this work we study their Schwartz kernels. Namely, diagonality of a kernel is defined by imposing rapid off‐diagonal decay conditions, and quasi‐diagonality by imposing the same conditions on the smoothing of the kernel through convolution with the
Gianluca Giacchi, Luigi Rodino
wiley   +1 more source