Results 41 to 50 of about 222,323 (280)

Physical characterization and radiation shielding features of B2O3As2O3 glass ceramic

Nuclear Engineering and Technology, 2023
The synthetic B2O3As2O3 glass ceramic are prepared to investigate the physical properties and the radiation shielding capabilities with the variation of concentration of the As2O3 with 10, 20, 30, and 40%, respectively. XRD analyses are performed on the
Mohamed Y. Hanfi, Ahmed K. Sakr, A.M. Ismail, Bahig M. Atia, Mohammed S. Alqahtani, K.A. Mahmoud   +5 more
doaj   +1 more source

Long hold times in a two-junction electron trap [PDF]

, 2011
The hold time $\tau$ of a single-electron trap is shown to increase significantly due to suppression of environmentally assisted tunneling events. Using two rf-tight radiation shields instead of a single one, we demonstrate increase of $\tau$ by a factor
Kemppinen, A., Lotkhov, S. V., Manninen, A. J., Pekola, J. P., Saira, O. -P., Zorin, A. B.   +5 more
core   +2 more sources

Use of 2G coated conductors for efficient shielding of DC magnetic fields [PDF]

, 2010
This paper reports the results of an experimental investigation of the performance of two types of magnetic screens assembled from YBa2Cu3O7-d (YBCO) coated conductors.
B. Vanderheyden, G. A. Levin, Holmes J. J., J. F. Fagnard, M. Dirickx, P. N. Barnes, P. Vanderbemden   +6 more
core   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Strength through diversity: how cancers thrive when clones cooperate

Molecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken, Maartje Witsen, Emile E. Voest, Krijn K. Dijkstra   +3 more
wiley   +1 more source

Gamma ray exposure buildup factor and shielding features for some binary alloys using MCNP-5 simulation code

Nuclear Engineering and Technology, 2021
Gamma radiation shielding features for three series of binary alloys identified as (Pb–Sn), (Pb–Zn), and (Zn–Sn) have been investigated. The mass attenuation coefficients (μ/ρ) for the selected alloys were simulated using the MCNP-5 code in the energy ...
Y.S. Rammah, K.A. Mahmoud, Faras Q. Mohammed, M.I. Sayyed, O.L. Tashlykov, R. El-Mallawany   +5 more
doaj   +1 more source

Direct visualization of iron sheath shielding effect in MgB_2 superconducting wires

, 2003
Local magneto-optical imaging and global magnetization measurement techniques were used in order to visualize shielding effects in the superconducting core of MgB_2 wires sheathed by ferromagnetic iron (Fe).
Alexey V Pan, Genenko Yu A, Huakun Liu, Jackson J D, Nagamatsu J, Pan A V, Shixue Dou, Sihai Zhou, Soltanian S, Sumption M D, Zhou S   +10 more
core   +1 more source

Megamaser Disks in Active Galactic Nuclei [PDF]

, 1998
Recent spectroscopic and VLBI-imaging observations of bright extragalactic water maser sources have revealed that the megamaser emission often originates in thin circumnuclear disks near the centers of active galactic nuclei (AGNs).
Abraham Z., Antonucci R., Arav N., Arieh Konigl, Blandford R. D., Brown P. D., Fiebig D., Genzel R., Greenhill L. J., Greenhill L. J., Hagiwara Y., Hawarden T. G., Herrnstein J. R., John F. Kartje, Matveenko L. I., Moshe Elitzur, Nakai N., Pringle J. E., Pringle J. E., Pringle J. E., Schandl S., Shakura N. I.   +21 more
core   +4 more sources

Monitoring of circulating tumor DNA allows early detection of disease relapse in patients with operable breast cancer

Molecular Oncology, EarlyView.
Monitoring circulating tumor DNA (ctDNA) in patients with operable breast cancer can reveal disease relapse earlier than radiology in a subset of patients. The failure to detect ctDNA in some patients with recurrent disease suggests that ctDNA could serve as a supplement to other monitoring approaches.
Kristin Løge Aanestad, Marie Austdal, Oddmund Nordgård, Gunnar Mellgren, Satu Oltedal, Marie L. Austbø, Ylva H. Vignes, Thomas Helland, Kristin Jonsdottir, Tone H. Lende, Emilius A. M. Janssen, Bjørnar Gilje, Kjersti Tjensvoll, PBCB study group, Gunnar Mellgren, Tone Hoel Lende, Anette Heie, Kristin Viste, Anita Røyneberg Alvheim, Emiel AM Janssen, Kristin Jonsdottir, Ann Cathrine Kroksveen, Thomas Helland, Einar Gudlaugsson, Oddmund Nordgård, Satu Oltedal, Kristin Løge Aanestad, Jan Terje Kvaløy, Kirsten Lode, Kari Britt Hagen, Marie Austdal, Ylva H. Vignes, Siri Tungland Sola, Nina Egeland Amundsen, Finn Magnus Eliassen, Emeritus Ernst A Lien   +35 more
wiley   +1 more source

Investigations on borate glasses within SBC-Bx system for gamma-ray shielding applications

Nuclear Engineering and Technology, 2021
This paper examines gamma-ray shielding properties of SBC-Bx glass system with the chemical composition of 40SiO2–10B2O3–xBaO–(45-x)CaO– yZnO– zMgO (where x = 0, 10, 20, 30, and 35 mol% and y = z = 6 mol%).
Y.S. Rammah, H.O. Tekin, C. Sriwunkum, I. Olarinoye, Amani Alalawi, M.S. Al-Buriahi, T. Nutaro, Baris T. Tonguc   +7 more
doaj   +1 more source