X-ray microtomography at Shanghai Synchrotron Radiation facility

Chen, Rongchang; Xie, Honglan; Deng, Bangming; Du, Guohao; Ren, Yifei; Wang, Yudan; Zhou, Gongfu; Tan, Hai; Yang, Yiming; Xu, Lingyun; Tao, Hu; Li, Qiao; Feng, Binggang; Wang, Feixiang; Xiao, Tiqiao

doi:10.1117/12.2238785

Cited by 11 publications

(18 citation statements)

References 33 publications

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“…The vertical density profile is generally consistent with a prediction by the empirical NRLMSISE-00 model. Our measurement is also generally consistent with several earlier measurements (Determan et al, 2007;Meier et al, 2015;Thiemann et al, 2017;Cheng et al, 2020). We found a significant density deficit at the altitude range of 70-110 km.…”

Section: Discussionsupporting

confidence: 93%

“…Our data are consistent with results from TIMED/SABER's infrared (IR) observations at 72 km and 100 km (Cheng et al, 2020), as well as RXTE/PCA's X-ray occultation observations at altitudes 73-93 km (Determan et al, 2007). Our data are marginally larger than the RXTE/PCA measurements in altitudes 100-120 km.…”

Section: Discussionsupporting

confidence: 89%

“…Because we do not see systematic long-term trend for N+O column densities, we constructed a single, averaged vertical density profile as shown in Figure 9. For comparison, Figure 9 also shows recent measurements that overlap the altitude range of our interest (Determan et al, 2007;Meier et al, 2015;Thiemann et al, 2017;Cheng et al, 2020). We here focus on literature that lists N and O densities, excluding measurements of the O 2 density (e.g., Lumpe et al, 2007), as O 2 is a minor species in the thermosphere.…”

Section: Discussionmentioning

confidence: 96%

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New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

Katsuda

Fujiwara

Ishisaki

et al. 2020

Preprint

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Combined O and N densities at altitudes 70-200 km are measured from Earth occultations of the Crab Nebula using X-ray astronomy satellites, Suzaku and Hitomi.• The vertical density profile is in general agreement with a predicted profile from the NRLMSISE-00 model, except for altitudes 70-110 km in which the density is significantly smaller than the prediction by the NRL model.• This density deficit could be due to either long-term radiative cooling of the upper atmosphere or imperfect modeling.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 96%

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New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

Katsuda

Fujiwara

Ishisaki

et al. 2020

Preprint

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“…The methods of synthesis of the nanoparticles may promote the reduction of graphene oxide, obtaining a more hydrophobic material compared to the parent graphene oxide [2,10].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…However, the increasing production of aromatic haloamines, which are extensively used as intermediates in the fine chemistry industry, requires the development of more environmentally friendly systems [1]. It has been reported that palladium and platinum offer good activities for this hydrogenation [1], but palladium is cheaper and more resistant to deactivation than platinum [2]. However, to achieve yields higher than 99 % of the desired aromatic haloamines it is necessary to add modifiers or to employ bimetallic catalysts [3,4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of palladium nanoparticles on carbon nanotubes and graphene for the chemoselective hydrogenation of para-chloronitrobenzene

Dongil

Pastor‐Pérez

Fierro

et al. 2016

Catalysis Communications

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We have studied the synthesis of palladium nanoparticles over carbon nanotubes (Pd/CNT) and graphene (Pd/G) and we have tested their catalytic performance in the liquid phase chemoselective hydrogenation of para-chloronitrobenzene at room temperature. The catalysts were characterized by N 2 adsorption/desorption isotherms, TEM, X-ray diffraction, infrared and X-ray photoelectron spectroscopy and ICP-OES.The palladium particle size on Pd/G (3.4 nm) and Pd/CNT (2.8 nm) was similar though the deposition was higher on Pd/G. Pd/CNT was more active which can be ascribed to the different surface area and electronic properties of the Pd nanoparticles over CNT, while the selectivity was 100% to the corresponding haloaniline over both catalysts and they were quite stable upon recycling.

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Synergistic Interaction between Metal Single‐Atoms and Defective WO₃₋_x Nanosheets for Enhanced Sonodynamic Cancer Therapy

Zhou,

Wang,

et al. 2024

Advanced Materials

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Although metal single‐atom (SA)‐based nanomaterials are explored as sonosensitizers for sonodynamic therapy (SDT), they normally exhibit poor activities and need to combine with other therapeutic strategies. Herein, the deposition of metal SAs on oxygen vacancy (OV)‐rich WO3−x nanosheets to generate a synergistic effect for efficient SDT is reported. Crystalline WO3 and OV‐rich WO3−x nanosheets are first prepared by simple calcination of the WO3·H2O nanosheets under an air and N2 atmosphere, respectively. Pt, Cu, Fe, Co, and Ni metal SAs are then deposited on WO3−x nanosheets to obtain metal SA‐decorated WO3−x nanocomposites (M‐WO3−x). Importantly, the Cu‐WO3−x sonosensitizer exhibits a much higher activity for ultrasound (US)‐induced production of reactive oxygen species than that of the WO3−x and Cu SA‐decorated WO3, which is also higher than other M‐WO3−x nanosheets. Both the experimental and theoretical results suggest that the excellent SDT performance of the Cu‐WO3−x nanosheets should be attributed to the synergistic effect between Cu SAs and WO3−x OVs. Therefore, after polyethylene glycol modification, the Cu‐WO3−x can quickly kill cancer cells in vitro and effectively eradicate tumors in vivo under US irradiation. Transcriptome sequencing analysis and further molecular validation suggest that the Cu‐WO3−x‐mediated SDT‐activated apoptosis and TNF signaling pathways are potential drivers of tumor apoptosis induction.

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X-ray microtomography at Shanghai Synchrotron Radiation facility

Cited by 11 publications

References 33 publications

New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

Synthesis of palladium nanoparticles on carbon nanotubes and graphene for the chemoselective hydrogenation of para-chloronitrobenzene

Synergistic Interaction between Metal Single‐Atoms and Defective WO₃₋_x Nanosheets for Enhanced Sonodynamic Cancer Therapy

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X-ray microtomography at Shanghai Synchrotron Radiation facility

Cited by 11 publications

References 33 publications

New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

New Measurement of the Vertical Atmospheric Density Profile from Occultations of the Crab Nebula with X-Ray Astronomy Satellites Suzaku and Hitomi

Synthesis of palladium nanoparticles on carbon nanotubes and graphene for the chemoselective hydrogenation of para-chloronitrobenzene

Synergistic Interaction between Metal Single‐Atoms and Defective WO3−x Nanosheets for Enhanced Sonodynamic Cancer Therapy

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Product

Resources

About

Synergistic Interaction between Metal Single‐Atoms and Defective WO₃₋_x Nanosheets for Enhanced Sonodynamic Cancer Therapy