Results 91 to 100 of about 2,146,098 (340)

Hyperspectral image reconstruction for x-ray fluorescence tomography.

Optics Express, 2015
A penalized maximum-likelihood estimation is proposed to perform hyperspectral (spatio-spectral) image reconstruction for X-ray fluorescence tomography.
D. Gürsoy, Tekin Bicer, A. Lanzirotti, M. Newville, F. De Carlo   +4 more
semanticscholar   +1 more source

Non‐Enzymatic Destruction of the Extracellular Matrix for Activatable Orthotopic Tumor Treatment and Enhanced Drug Penetration

Advanced Functional Materials, EarlyView.
Supramolecular biomimetic nanoaggregates (HFCu NAs), constructed with fluorinated histidine and copper ions via metal coordination and aromatic packing, exhibit enhanced reactive oxygen species （ROS）generation at tumor sites, which results in stepwise collapse of the extracellular matrix (ECM), affording tumor microenvironment responsive “turn‐on” 19F ...
Hui Wang, Ruxin Feng, Yan Wang, Qian Ma, Di Yuan, Xi Yang, Suying Xu, Tony D. James, Leyu Wang   +8 more
wiley   +1 more source

Soft X-ray Fluorescence Study of Buried Silicides in Antiferromagnetically Coupled Fe/Si Multilayer [PDF]

, 1995
Soft x-ray fluorescence spectroscopy has been employed to obtain information about the Si-derived valence band states of Fe/Si multilayers. The valence band spectra are quite different for films with and without antiferromagnetic interlayer exchange coupling, demonstrating that these multilayers have different silicide phases in their spacer layers ...
arxiv   +1 more source

Nanoscale Agglomeration Mechanisms of BF‐DPB:BPyMPM Donor–Acceptor Systems for Organic Optoelectronic Devices

Advanced Functional Materials, EarlyView.
The intermolecular and molecule‐substrate interactions and resulting molecular assembly of the OLED and OPV donor and acceptor molecules BF‐DPB and BPyMPM are investigated on different single crystalline substrates using high‐resolution scanning probe microscopy.
Milena Merkel, Philipp Wiesener, Robert Schmidt, Rishi Shivhare, Nikos Doltsinis, Rudolf Bratschitsch, Saeed Amirjalayer, Koen Vandewal, Harry Mönig   +8 more
wiley   +1 more source

Combined NanoSIMS and synchrotron X-ray fluorescence reveal distinct cellular and subcellular distribution patterns of trace elements in rice tissues.

New Phytologist, 2014
The cellular and subcellular distributions of trace elements can provide important clues to understanding how the elements are transported and stored in plant cells, but mapping their distributions is a challenging task.
K. Moore, Yi Chen, A. van de Meene, L. Hughes, Wen-ju Liu, T. Geraki, F. Mosselmans, S. McGrath, C. Grovenor, F. Zhao   +9 more
semanticscholar   +1 more source

Improved self-absorption correction for fluorescence measurements of extended x-ray absorption fine-structure [PDF]

Physica Scripta, T115, 202 (2005), 2003
Extended x-ray absorption fine-structure (EXAFS) data collected in the fluorescence mode are susceptible to an apparent amplitude reduction due to the self-absorption of the fluorescing photon by the sample before it reaches a detector. Previous treatments have made the simplifying assumption that the effect of the EXAFS on the correction term is ...
arxiv  

Recent Advances in Highly Luminescent Carbon Dots

Advanced Functional Materials, EarlyView.
Here, a comprehensive summary of the advancements is provided in highly luminescent carbon dots across various luminescence bands since their discovery in 2004. It systematically covers the synthesis, structural characteristics, preparation strategies, and essential purification of these carbon dots, along with their applications in efficient ...
Yupeng Liu, Zhujun Huang, Xuanye Wang, Yiming Hao, Junxiang Yang, Hui Wang, Songnan Qu   +6 more
wiley   +1 more source

Experimental determination of the sulfur K-shell fundamental parameters employing the holistic approach

New Journal of Physics
Sulfur and its compounds are both very abundant in the environment and very important for technological applications such as batteries. X-ray spectroscopic characterizations of sulfur compounds for a quantitative determination of the present amount of ...
Philipp Hönicke
doaj   +1 more source

Electric Pulse Regulated MXene Based Nanozymes for Integrative Bioelectricity Immuno‐Cancer Therapy

Advanced Functional Materials, EarlyView.
MXenzyme‐mediated bioelectricity cancer therapy (MXenzyme‐BECT) enhances cancer cell death through irreversible depolarization, ion channel disruption, ROS generation, and immunogenic cell death. Computational simulations reveal the electrical mechanisms by which MXenzyme acts on single cells and support to predict treatment parameters. Next‐generation
Sanghee Lee, Seongchan Kim, Eui‐Sang Yu, Sian Lee, Min Jun Ko, Hyojin Lee, Dong‐Hyun Kim   +6 more
wiley   +1 more source

Elemental and Chemically Specific X-ray Fluorescence Imaging of Biological Systems

Chemical Reviews, 2014
From the perspective of a chemist, biology confers a rich variety of roles on a number of metal ions. It is widely agreed that a large fraction of the genomic output of living things contains metal or metalloid ions, although estimates of this fraction ...
M. J. Pushie, I. Pickering, M. Korbas, M. Hackett, Graham N George   +4 more
semanticscholar   +1 more source