Results 91 to 100 of about 1,231,611 (370)

Evidence for Solar Modulation on the Millennial-Scale Climate Change of Earth

open access: yesUniverse, 2020
In this study, we use available reconstructed data to investigate periodicities of solar activity (i.e., sunspot number) and the Earth’s climate change (temperatures of Lake Qinghai in China and Vostok in Antarctica, the GISP δ18O climate record of ...
Xinhua Zhao   +2 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Trends and Periodicities of Tropical Cyclone Frequencies and the Correlations with Ocean Drivers

open access: yesJournal of Marine Science and Engineering
This study presents a comprehensive analysis on the variations in the tropical cyclone (TC) frequencies during 1980–2021, including the linear trends, periodicities, and their variabilities on both global and basin-wise scales. An increasing trend in the
Guoyou Li, Huabin Shi, Zhiguo He
doaj   +1 more source

Periodicity in Rank 2 Graph Algebras

open access: yes, 2007
Kumjian and Pask introduced an aperiodicity condition for higher rank graphs. We present a detailed analysis of when this occurs in certain rank 2 graphs. When the algebra is aperiodic, we give another proof of the simplicity of $\ca(\Fth)$. The periodic
Cuntz   +13 more
core   +3 more sources

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

open access: yesMolecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley   +5 more
wiley   +1 more source

Bott periodicity and stable quantum classes

open access: yes, 2012
We use Bott periodicity to relate previously defined quantum classes to certain "exotic Chern classes" on $BU$. This provides an interesting computational and theoretical framework for some Gromov-Witten invariants connected with cohomological field ...
A Pressley   +17 more
core   +1 more source

Investigation of Fano resonance in planar metamaterial with perturbed periodicity.

open access: yesOptics Express, 2013
In this paper, we report the formation of sharp Fano resonance in planar metamaterial array with perturbed periodicity. Rigorous sheet impedance theory is given to analyze the electric-magnetic and magnetic-magnetic coupling effects.
M. Pu   +6 more
semanticscholar   +1 more source

Day/night variations of myeloid and lymphoid cell subsets in the murine inguinal lymph node

open access: yesFEBS Open Bio, EarlyView.
The circadian system is involved in the temporal regulation of the immune system. Our study reveals that two innate immune populations, NKT cells and neutrophils, predominate at the beginning of the day in healthy mice, highlighting how the time of day influences immune responses.
Paula M. Wagner   +6 more
wiley   +1 more source

Distribution of histopathological types of thyroid tumors in 1999-2015 compared to 1966-1988 year period [PDF]

open access: yesArchive of Oncology, 2020
Background: The most common thyroid tumors originate from the epithelial follicular cells. Etiology involved in the development of thyroid carcinoma is multifactorial, including external influences and genetic predisposition.
Makazlieva Tanja   +3 more
doaj  

Influence of atmospheric pressure change on gas sampling in mine closed area

open access: yes矿业科学学报, 2020
The variation of atmospheric pressure will cause the exchange of air volume between the closed area of the mine and the external environment, which will have an impact on the gas migration in the closed area of the mine.In order to study the influence of
Lei Baiwei   +3 more
doaj   +1 more source

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