312 research outputs found
Endpoint Estimates for N-dimensional Hardy Operators and Their Commutators
In this paper, it is proved that the higher dimensional Hardy operator is
bounded from Hardy space to Lebesgue space. The endpoint estimate for the
commutator generated by Hardy operator and (central) BMO function is also
discussed.Comment: 8 page
Measurement of the ratios of branching fractions and
The ratios of branching fractions
and are measured, assuming isospin symmetry, using a
sample of proton-proton collision data corresponding to 3.0 fb of
integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The
tau lepton is identified in the decay mode
. The measured values are
and
, where the first uncertainty is
statistical and the second is systematic. The correlation between these
measurements is . Results are consistent with the current average
of these quantities and are at a combined 1.9 standard deviations from the
predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb
public pages
Sex Differences in the Association of Urinary Concentrations of Phthalates Metabolites with Self-Reported Diabetes and Cardiovascular Diseases in Shanghai Adults
Phthalate exposure was reported to be associated with diabetes mellitus (DM) and cardiovascular disease (CVD). Yet, reported associations and the potential sex differences are inconsistent. We conducted a cross-sectional study involving 2330 participants in the Fall of 2012. Urinary metabolites of 10 phthalates were measured. The status of having DM and CVD-related outcomes were self-reported. In the overall study population, the logistic regression analyses showed that the urinary levels of mono-2-ethyl-5-oxohexyphthalate (MEOHP), mono-2-ethyl-5-hydroxyhexylphthalate(MEHHP) and mono-2-ethyl-5-carboxypentylphthalate (MECPP) were positively associated with DM. Higher urinary levels of monomethyl phthalate (MMP) and mono-2-carboxymethyl-hexyl phthalate (MCMHP) were associated with increased odds of hyperlipidemia, while mono-2-ethylhexylphthalate (MEHP) was significantly inverse-associated with hyperlipidemia. We did not observe significant associations for other CVD-related outcomes with phthalate metabolites. When stratifying by sex, MEHHP, MEOHP, MECPP, MCMHP and the micromolar sums of the oxidative metabolites of DEHP (ÎŁDEHPox) were all significantly related to DM in males, but not in females. No significant sex differences were found in CVD-related outcomes, except the sporadic associations between phthalates and hyperlipidemia. These findings highlight the importance of investigating the sex-specific relationship between phthalates exposure and DM
The multilinear Marcinkiewicz interpolation theorem revisited: The behavior of the constant
Delayed Annealing Treatment for High-Quality CuSCN: Exploring Its Impact on Bifacial Semitransparent nâiâp Planar Perovskite Solar Cells
Inorganic
p-type copperÂ(I) thiocyanate (CuSCN) hole-transporting material (HTM)
belongs to a promising class of compounds integral for the future
commercialization of perovskite solar cells (PSCs). However, deposition
of high-quality CuSCN films is a challenge for fabricating n-i-p planar
PSCs. Here we demonstrate pinhole-free and ultrasmooth CuSCN films
with high crystallinities and uniform coverage via delayed annealing
treatment at 100 °C, which can effectively optimize the interfacial
contact between the perovskite absorber and the electrode for efficient
charge transport. A satisfactory efficiency of 13.31% is achieved
from CuSCN-based n-i-p planar PSC. In addition, due to the superior
transparency of p-type CuSCN HTMs, it is also possible to prepare
bifacial semitransparent n-i-p planar PSCs, which eventually permits
a maximum efficiency of 12.47% and 8.74% for the front and rear illumination,
respectively. The low-temperature process developed in this work is
also beneficial for those applications such as flexible and tandem
solar cells on heat-sensitive substrates
- âŠ