Results 61 to 70 of about 799,637 (297)

The Nature of Metal Artifacts in X-ray Computed Tomography and Their Reduction by Optimization of Tomography Systems Parameters

Applied Sciences, 2023
A significant gap in the known methods for assessing the levels of metal artifacts in X-ray computed tomography and approaches to their reduction is an almost complete disregard for the physical nature of this artifact—the proximity to zero of ...
Sergey Pavlovich Osipov, Sergei Vladimirovich Chakhlov, Vadim Yurevich Zhvyrblia, Dmitry Andreevich Sednev, Oleg Sergeyevich Osipov, Eugeny Yurevich Usachev   +5 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

The diagnostic value of quantitative parameters on dual-layer detector-based spectral CT in identifying ischaemic stroke

Frontiers in Neurology, 2023
ObjectiveTo investigate the diagnostic value of quantitative parameters of spectral computed tomography (CT) in ischaemic stroke areas.MethodsThe medical records of 57 patients with acute ischaemic stroke (AIS) who underwent plain computed tomography (CT)
Jian Huang, Jian Huang, Jinghua Chen, Jinghua Chen, Ximing Wang, Ling Hao, Jinfeng Zhang, Xiaohui Zhang, Zhihong Sheng, Kefu Liu   +9 more
doaj   +1 more source

Effective Quantum Dynamics of Interacting Systems with Inhomogeneous Coupling [PDF]

, 2006
We study the quantum dynamics of a single mode/particle interacting inhomogeneously with a large number of particles and introduce an effective approach to find the accessible Hilbert space where the dynamics takes place. Two relevant examples are given:
C. E. López, E. Solano, H. Christ, J. C. Retamal, P. Rungta, R. Mani   +5 more
core   +2 more sources

Measurement of effective atomic numbers using energy-resolved computed tomography [PDF]

Journal of Nuclear Science and Technology, 2014
For ion radiation therapy, the measurement of effective atomic numbers, Zeff, is necessary to know the material distribution in a human body; the range of ions entering the human body is influenced by the material distribution along their paths. Zeff, however, cannot be measured at hospitals because monochromatic X-rays with different energies are ...
Yamashita, Yoshiki, Kimura, Masashi, Kitahara, Masaru, Hamaguchi, Takumi, Kanno, Ikuo, Ohtaka, Masahiko, Hashimoto, Makoto, Ara, Kuniaki, Onabe, Hideaki   +8 more
openaire   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Comprehensive study of photon and proton interactions to interpret the radiation parameters of boron derivative drugs for chemoradiotherapy

Journal of Nigerian Society of Physical Sciences
 For chemoradiotherapy applications, this work investigated the photon and proton interaction parameters in five boron-based medications: sodium borocaptate, bortezomib, delanzomib, boronophenylalanine, and boric acid. Photon interaction parameters such
A. M. Olaosun, C. A. Aborisade, D. E. Shian, P. T. Osuolale   +3 more
doaj   +1 more source

Laser driven self-assembly of shape-controlled potassium nanoparticles in porous glass

, 2014
We observe growth of shape-controlled potassium nanoparticles inside a random network of glass nanopores, exposed to low-power laser radiation. Visible laser light plays a dual role: it increases the desorption probability of potassium atoms from the ...
Burchianti, A., Marinelli, C., Mariotti, E, Marmugi, L., Moi, L., Veronesi, S.   +5 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

InChaP: A simple software for computation of charged particle interaction parameters

Nuclear Engineering and Technology
A new, user-friendly software called Interaction of Charged Particle has been developed to simulate ion interactions across various applications. Designed with robust physical formulations and computational techniques using Python packages, InChaP ...
Ali Çiçi, Berk Morkoç, Hüseyin Dağ, Levent Aydınbakar, M.I. Sayyed, Mehmet Büyükyıldız   +5 more
doaj   +1 more source