Results 81 to 90 of about 1,021,079 (330)

Could the use of bedside lung ultrasound reduce the number of chest x-rays in the intensive care unit?

Cardiovascular Ultrasound, 2017
Background Lung ultrasound can be used as an alternative to chest radiography (CXR) for the diagnosis and follow-up of various lung diseases in the intensive care unit (ICU).
Etrusca Brogi, Elena Bignami, Anna Sidoti, Mohammed Shawar, Luna Gargani, Luigi Vetrugno, Giovanni Volpicelli, Francesco Forfori   +7 more
doaj   +1 more source

X-ray phase contrast imaging of biological specimens with tabletop synchrotron radiation [PDF]

, 2011
Since their discovery in 1896, x-rays have had a profound impact on science, medicine and technology. Here we show that the x-rays from a novel tabletop source of bright coherent synchrotron radiation can be applied to phase contrast imaging of ...
Alexander G. R. Thomas, Anatoly Maksimchuk, Charlotte A. J. Palmer, Chris McGuffey, Franklin Dollar, Galina Kalintchenko, Joerg Schreiber, Karl Krushelnick, Michael S. Bloom, Stefan Kneip, Stuart P. D. Mangles, Takeshi Matsuoka, Victor Yanovsky, Vladimir Chvykov, Will Schumaker, Zulfikar Najmudin   +15 more
core   +2 more sources

EGFR‐STAT3 activation provides a therapeutic rationale for targeting aggressive ETV1‐positive prostate cancer

Molecular Oncology, EarlyView.
Cotargeting EGFR and STAT3 with Erlotinib and TTI‐101 impairs both 2D and 3D growth of ETV1‐overexpressing prostate cancer cells by disrupting a self‐sustaining ETV1–EGFR positive feedback loop that promotes EGFR and STAT3 expression and phosphorylation (activation).
Elsa Gomes Paiva, Bernardo Orr, Ana Azeredo, Andreia Brandão, Manuel R. Teixeira, Paula Paulo   +5 more
wiley   +1 more source

Skull X-Rays for Head Injury

Pediatric Neurology Briefs, 2005
The effect of abolishing skull X-rays on the rate of admission, use of computer tomography (CT), radiation dose per head injury, and detection of intracranial injuries was determined in patients, aged 1 to 14 years, presenting to the ED at Royal Hospital
J Gordon Millichap
doaj   +1 more source

X-ray Polarimetry of X-ray Pulsars

Galaxies
Radiation from X-ray pulsars (XRPs) was expected to be strongly linearly polarized owing to a large difference in their ordinary and extraordinary mode opacities. The launch of IXPE allowed us to check this prediction. IXPE observed a dozen X-ray pulsars, discovering pulse-phase dependent variation of the polarization degree (PD) and polarization angle
Juri Poutanen, Sergey S. Tsygankov, Sofia V. Forsblom   +2 more
openaire   +3 more sources

X-ray Properties of Pre--Main-Sequence Stars in the Orion Nebula Cluster with Known Rotation Periods

, 2004
We re-analyze all archival Chandra/ACIS observations of the Orion Nebula Cluster (ONC) to study the X-ray properties of a large sample of pre--main-sequence (PMS) stars with optically determined rotation periods. Our goal is to elucidate the origins of X-
Bouvier J., David R. Ardila, Gibor Basri, Keivan G. Stassun, Krautter J., Mary Barsony, Neuhauser R., Randich S., Robert D. Mathieu, Ventura P.   +9 more
core   +1 more source

Femtosecond x rays from laser-plasma accelerators [PDF]

, 2013
Relativistic interaction of short-pulse lasers with underdense plasmas has recently led to the emergence of a novel generation of femtosecond x-ray sources. Based on radiation from electrons accelerated in plasma, these sources have the common properties
Beck, A., Corde, S., Fitour, R., Lambert, G., Lefebvre, E., Malka, V., Phuoc, K. Ta, Rousse, A.   +7 more
core   +3 more sources

The critical role of DNA damage‐inducible transcript 4 (DDIT4) in stemness character of leukemia cells and leukemia initiation

Molecular Oncology, EarlyView.
Stemness properties, including quiescence, self‐renewal, and chemoresistance, are closely associated with leukemia relapse. Here, we demonstrate that DNA damage‐inducible transcript 4 (DDIT4) is induced in the hypoxic bone marrow niche and is essential for maintaining the stemness of AML1‐ETO9a leukemia cells.
Yishuang Li, Zhijie Cao, Haiyan Xing, Zhenya Xue, Wenbing Liu, Jiayuan Chen, Yihan Mei, Runxia Gu, Hui Wei, Shaowei Qiu, Min Wang, Qing Rao, Jianxiang Wang   +12 more
wiley   +1 more source

Imprinting magnetic information in manganites with X-rays

, 2012
The effect of x-rays on an orbital and charge ordered epitaxial film of a Pr$_{0.5}$Ca$_{0.5}$MnO$_{3}$ is presented. As the film is exposed to x-rays, the antiferromagnetic response increases and concomitantly the conductivity of the film improve. These
Garganourakis, M., Guzenko, V. A., Huang, S. W., Kawasaki, M., Nakamura, M., Scagnoli, V., Staub, U., Tokura, Y., Wadati, H.   +8 more
core   +1 more source

Structural and functional characterization of chitinase from carnivorous plant Drosera adelae

FEBS Open Bio, EarlyView.
A class I chitinase from the carnivorous plant Drosera adelae was expressed and purified using a yeast system, revealing high enzymatic activity. Structural analyses of the catalytic and chitin‐binding domains identified key tyrosine residues involved in substrate binding, offering insights into the enzyme's adaptation for insect digestion.
Kazunari Yoneda, Yuki Naruse, Yusaku Suizu, Tomohiro Araki, Yoshikazu Hoshi, Haruhiko Sakuraba, Junji Hayashi, Toshihisa Ohshima   +7 more
wiley   +1 more source