Results 31 to 40 of about 14,777,258 (301)

Effective atomic numbers, electron densities, and tissue equivalence of some gases and mixtures for dosimetry of radiation detectors [PDF]

Nuclear Technology and Radiation Protection, 2012
Total mass attenuation coefficients, µm, effective atomic number, Zeff, and effective electron density, Neff, of different gases - carbon dioxide, methane, acetylene, propane, butane, and pentane used in radiation detectors, have been calculated for ...
Singh Vishwanath P., Badiger Nagappa M.
doaj   +1 more source

Effective Atomic Number Determination of Rare Earth Oxides with Scattering Intensity Ratio

Science and Technology of Nuclear Installations, 2013
Effective atomic numbers () of scientific samples (rare earth) were determined experimentally by scattering of 59.54 keV gamma photons from 5 Ci 241Am annular radioactive source.
A. Turşucu, D. Demir, P. Önder
doaj   +1 more source

The New Element Mendelevium, Atomic Number 101 [PDF]

, 1955
We have produced and chemically identified for the first time a few atoms of the element with atomic number 101. Very intense helium ion bombardments of tiny targets of 99{sup 253} have produced a few spontaneously fissionable atoms which elute in the ...
Ghiorso, A., Choppin, G R, Seaborg, G. T., Harvey, B.G., Seaborg, G.T., Thompson, S G, Choppin, G. R., Ghiorso, A, Harvey, B G, Choppin, G.R., Seaborg, G T, Harvey, B. G., Thompson, S. G., Thompson, S.G.   +13 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Determination of dosimetric dependence for effective atomic number of LDR brachytherapy seed capsule by Monte Carlo simulation

Nuclear Engineering and Technology, 2023
Brachytherapy is a special case of radiotherapy. It should be arranged according to some principles in medical radiation applications and radiation physics.
Berkay Camgöz, Dilara Tarım
doaj   +1 more source

Synthesized effective atomic numbers for commercially available dual-energy CT [PDF]

Reports of Practical Oncology & Radiotherapy, 2020
The objective of this study was to assess synthesized effective atomic number (Zeff) values with a new developed tissue characteristic phantom and contrast material of varying iodine concentrations using single-source fast kilovoltage switching dual-energy CT (DECT) scanner.A newly developed multi energy tissue characterisation CT phantom and an ...
Kawahara, Daisuke, Ozawa, Shuichi, Yokomachi, Kazushi, Fujioka, Chikako, Kimura, Tomoki, Awai, Kazuo, Nagata, Yasushi   +6 more
openaire   +4 more sources

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source