Results 31 to 40 of about 380,351 (277)

Efficiency calibration of a well-type HPGe detector using experimental and Monte Carlo simulation techniques [PDF]

Nuclear Technology and Radiation Protection, 2020
Well-type high-purity germanium detectors are well suited for the analysis of small samples, as they combine high detection efficiency with low background radiation. The well geometry however makes efficiency calibration more difficult than that
Dalaka Ekaterini, Kuburas Georgios, Eleftheriadis Konstantinos, Anagnostakis Marios J.   +3 more
doaj   +1 more source

Generation of nanoparticles in the concentrated energy (laser beam) and gas flow

Aviation, 2004
The method of generation and selection of small nanoparticles in the airflow is considered in this paper. To melt the material (stainless steel), a concentrated energy flow – a pulsed solid‐state laser beam – was used.
Arūnas Severas Amulevičius, Česlovas Steponas Sipavičius, Antanas Daugvila, Rimantas Davidonis   +3 more
doaj   +1 more source

Investigation of the Source of 238U, 232Th and 40K Radiation of in the Neyshabour Turquoise Mine and its Environmental Impacts

Journal of Economic Geology, 2021
Introduction The Neyshabour Turquoise Mine is located at 55 km North West of Neyshabour in latitude of E58◦, 23ꞌꞌ and longitude of N36◦, 23ꞌꞌ. This area is situated at the Cenozoic continental magmatic arc in the north of Sabzevar ophiolite sequence and
Alireza Mazloumi Bajestani, Akram Fahim
doaj   +1 more source

Theory of the two-proton radioactivity in the continuum shell model

, 2005
We develop the microscopic description of the two-nucleon radioactivity in the framework of the Shell Model Embedded in the Continuum. This approach is applied for the description of spontaneous two-proton radioactivity in $^{45}$Fe, $^{48}$Ni and $^{54}$
Barker, Barker, Bartz, Bartz, Bennaceur, Bennaceur, Bennaceur, Berggren, Berggren, Blank, Blomqvist, Brown, Brown, Case, Cole, Daehnick, Delves, Drożdż, Efimov, Eppel, Fano, Feshbach, Feshbach, Garrido, Garrido, Giovinazzo, Goldansky, Gomez del Campo, Grigorenko, Grigorenko, Grigorenko, Grigorenko, Grigorenko, Halderson, Honma, Id Betan, Id Betan, Id Betan, J. Okołowicz, J. Rotureau, Kahana, Lind, Luo, M. Płoszajczak, Mahaux, Michel, Michel, Michel, Michel, Michel, Michel, Michel, Migdal, Nielsen, Nummela, Nunes, Okołowicz, Ormand, Pfützner, Philpott, Poves, Raynal, Rotter, Rotureau, Shyam, Watson, Wendler, Wildenthal   +67 more
core   +3 more sources

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

Equilibrium status of naturally occurring 226Ra with radon daughters and estimation of 238U activity from 235U using natural radioactivity ratio of 238U/235U in soil around Rawatbhata, Rajasthan

Radiation Protection and Environment, 2022
Equilibrium status among 226Ra and radon daughters was studied in soil samples around Rawatbhata, Rajasthan. It was found that the increase in radioactivity of 214Bi (radon daughter) due to complete radon buildup in the sealed container is within 15 ...
Ajay Kumar Gocher, Mohit Sisodia, S N Tiwari, I V Saradhi, A Vinod Kumar   +4 more
doaj   +1 more source

Brain delivery of vasoactive intestinal peptide (VIP) following nasal administration to rats [PDF]

, 2003
The aim of this work was to study in rats the nasal route for the brain delivery of the vasoactive intestinal peptide (VIP) neuropeptide. After evaluating VIP stability in solutions obtained from nasal washes, the effect of formulation parameters (pH 4-9,
Couet, William, Dufès, Christine, Gaillard, Afsaneh, Gaillard, Frédéric, Muller, Jean-Marc, Olivier, Jean-Christophe   +5 more
core   +3 more sources

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

Fukushima and Chernobyl: Similarities and Differences of Radiocesium Behavior in the Soil–Water Environment

Toxics, 2022
In the wake of Chernobyl and Fukushima accidents, radiocesium has become a radionuclide of most environmental concern. The ease with which this radionuclide moves through the environment and is taken up by plants and animals is governed by its chemical ...
Alexei Konoplev
doaj   +1 more source

Mass spectrometry based identification of AMP‐O‐Tris generated by Thermococcus onnurineus Cas10

FEBS Open Bio, EarlyView.
Isolated Thermococcus onnurineus Cas10 generates the noncanonical ATP‐derived product AMP‐O‐Tris while in Tris‐containing buffer as identified via mass spectrometry, revealing relaxed nucleophile selectivity under isolated conditions. These findings suggest that multiprotein Csm complex assembly restricts Cas10 reactivity toward canonical cyclic ...
Su‐Jin Lee, Ga Seul Lee, JinHan Kim, Kwang‐Hyun Park, Seong‐Ryung Go, Jeong Hee Moon, Eui‐Jeon Woo   +6 more
wiley   +1 more source