Results 51 to 60 of about 120,161 (290)

Nanocrystal Compressive Residual Stresses: A Strategy to Strengthen the Bony Spines of Osteocytic and Anosteocytic Fish

Advanced Science, EarlyView.
Advanced neoteleost fishbones, such as medaka, challenge bone adaptation strategies. While zebrafish bones contain osteocyte‐mediated porosity, medaka bones lack it, raising questions about alternative reinforcement mechanisms. Using advanced imaging, this study reveals higher residual compressive strains in medaka bone, suggesting an adaptation that ...
Andreia Silveira, Anton Davydok, Christina Krywka, Mario Scheel, Timm Weitkamp, Claudia Fleck, Ron Shahar, Paul Zaslansky   +7 more
wiley   +1 more source

Enrichment of Low-Level Tritium in Groundwater via an Electrolysis Process for Liquid Scintillation Counting Applications

Geosciences, 2023
Tritium levels in the groundwater of arid regions are very low; in most cases, these low tritium levels cannot be detected using a conventional liquid scintillation counter (LSC).
Al Mamun
doaj   +1 more source

Comparative Study of Gamma to Neutron Ratios of various (alpha, neutron) Neutron Sources [PDF]

arXiv, 2021
The gamma to neutron ratio is measured via Pulse Shape Discrimination (PSD) of a Plutonium Beryllium (PuBe) source and of a rudimentary constructed Polonium Beryllium (PoBe) source using one organic liquid scintillator detector and digital signal processing. Furthermore, two organic liquid scintillator detectors and digital signal processing is used to
arxiv  

Spatial methods for event reconstruction in CLEAN [PDF]

Nucl.Instrum.Meth. A522 (2004) 504-520, 2003
In CLEAN (Cryogenic Low Energy Astrophysics with Noble gases), a proposed neutrino and dark matter detector, background discrimination is possible if one can determine the location of an ionizing radiation event with high accuracy. We simulate ionizing radiation events that produce multiple scintillation photons within a spherical detection volume ...
arxiv   +1 more source

Development of Carbon‐11 Labeled Pyrimidine Derivatives as Novel Positron Emission Tomography (PET) Agents Enabling Brain Sigma‐1 Receptor Imaging

Advanced Science, EarlyView.
Novel carbon‐11 labeled pyrimidine derivatives are developed as PET imaging probes for visualizing sigma‐1 receptors in the brain. [11C]CNY‐01 demonstrates superior brain uptake and binding specificity in both rodents and non‐human primates. The study reveals decreased sigma‐1 receptor expression in Alzheimer's disease, offering a promising tool for ...
Ping Bai, Ashley Gomm, Chi‐Hyeon Yoo, Prasenjit Mondal, Fleur Marie Lobo, Hui Meng, Yanting Zhou, Weiyao Xie, Hsiao‐Ying Wey, Rudolph E. Tanzi, Can Zhang, Changning Wang, Yu Lan   +12 more
wiley   +1 more source

CNO and pep neutrino spectroscopy in Borexino: Measurement of the deep underground production of cosmogenic 11C in organic liquid scintillator [PDF]

Phys.Rev.C74:045805,2006, 2006
Borexino is an experiment for low energy neutrino spectroscopy at the Gran Sasso underground laboratories. It is designed to measure the mono-energetic $^7$Be solar neutrino flux in real time, via neutrino-electron elastic scattering in ultra-pure organic liquid scintillator.
arxiv   +1 more source

Glucocorticoid regulation of diurnal spine plasticity in the murine ventromedial prefrontal cortex

Journal of Neuroendocrinology, Volume 34, Issue 12, December 2022., 2022
In mice, the core clock gene Per1 is expressed rhythmically within the ventromedial prefrontal cortex (vmPFC). Deep layer pyramidal neurons within the vmPFC exhibit a diurnal rhythm of dendritic spine density. Both Per1 expression and dendritic spine density are increased during the active phase along with the diurnal peak of glucocorticoid (GC ...
Alex M. Miller, Renata M. Daniels, Julietta A. Sheng, T. John Wu, Robert J. Handa   +4 more
wiley   +1 more source

Comparison of the efficacy of biodegradable and non-biodegradable scintillation liquids on the counting of tritium- and [14C]-labeled compounds

Brazilian Journal of Medical and Biological Research, 2003
The widespread use of ³H and 14C in research has generated a large volume of waste mixed with scintillation liquid, requiring an effective control and appropriate storage of liquid radioactive waste.
Medeiros R.B., Godinho R.O., Mattos M.F.S.S.   +2 more
doaj  

Radioactive contamination of scintillators [PDF]

International Journal of Modern Physics A Vol. 33, No. 9 (2018) 1843007 (42 pages), 2018
Low counting experiments (search for double $\beta$ decay and dark matter particles, measurements of neutrino fluxes from different sources, search for hypothetical nuclear and subnuclear processes, low background $\alpha$, $\beta$, $\gamma$ spectrometry) require extremely low background of a detector.
arxiv   +1 more source

Enhancing Cycle Life in Superoxide‐Based Na–O2 Batteries by Reducing Interface Reactivity

Advanced Energy Materials, EarlyView.
A new sodium–oxygen (Na–O2) battery is designed with highly active vanadium phosphide (VP) nanoparticles as a catalyst, an ether/ionic liquid‐based electrolyte, and an effective sodium bromide (NaBr) anode protection layer. This designed Na–O2 cell that produces NaO2 is able to reduce the interfacial reactivity between cell materials and the product to
Adel Azaribeni, Alireza Kondori, Nannan Shan, Moon Gyu Park, Ahmad M. Harzandi, Ga‐Yoon Kim, Mahmoud Tamadoni Saray, Arashdeep S. Thind, Pablo Navarro Munoz Delgado, Musawenkosi Ncube, Robert F. Klie, Reza Shahbazian‐Yassar, Ahn T. Ngo, Larry A. Curtiss, Mohammad Asadi   +14 more
wiley   +1 more source