Results 91 to 100 of about 5,819,479 (316)

3D ultrastructural organization of whole Chlamydomonas reinhardtii cells studied by nanoscale soft x-ray tomography

open access: yes, 2012
The complex architecture of their structural elements and compartments is a hallmark of eukaryotic cells. The creation of high resolution models of whole cells has been limited by the relatively low resolution of conventional light microscopes and the ...
Achilleas S. Frangakis   +32 more
core   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

open access: yesFEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová   +2 more
wiley   +1 more source

Optical & X-ray Studies of Ultraluminous X-ray Sources [PDF]

open access: yes, 2009
Ultraluminous X-ray Sources (ULXs) are point like X-ray sources situated external to the nucleus of their host galaxy, with inferred X-ray luminosities in excess of 10^{39} erg s^{−1} .
Gladstone, Jeanette Claire   +1 more
core  

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

open access: yesFEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

Ultrafast heat transfer in single palladium nanocrystals seen with an X-ray free-electron laser

open access: yesCommunications Materials
We report transient highly strained structural states in individual palladium (Pd) nanocrystals, electronically heated using an optical laser, which precede their uniform thermal expansion.
David Yang   +13 more
doaj   +1 more source

A portable CCD array detector for in-situ analysis of powder samples using combined x-ray diffraction/x-ray fluorescence techniques

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This work describes the design, development and testing of a portable charge-coupled device detector system to be used for the simultaneous collection of X-
Intisar, Amir
core  

Condensed tables for x-ray fluorescence analysis. [PDF]

open access: yes, 1966
Condensed tables of 20 angles are provided which are simpler to use for many applications than the comprehensive tables already ...
Whittem, RN, Brockman, RH
core  

Hyperactive ice‐binding proteins stabilize cell membranes and improve resistance to dehydration stress in Caenorhabditis elegans

open access: yesFEBS Open Bio, EarlyView.
TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose   +9 more
wiley   +1 more source

Automated detection of bone splinters in DEXA phantoms using deep neural networks

open access: yesCurrent Directions in Biomedical Engineering, 2019
Dual energy radiographic imaging is a method to provide material information and can be used to differentiate between various tissue types. Dual energy X-ray absorption (DEXA) can be applied for breast density, osteoporosis or bone fracture analysis.
Rüger Steffen   +5 more
doaj   +1 more source

Applied X Rays

open access: yesBritish Journal of Radiology: BIR Section, 1927
Mode of access: Internet.
openaire   +1 more source

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