Results 31 to 40 of about 257,139 (292)

Time changes of dose equivalent rate above the soil surface as indication of natural attenuation processes [PDF]

Proceedings of the International Association of Hydrological Sciences, 2019
Eight sites in the Fukushima contaminated area were surveyed for long-term changes in D-shuttle dose equivalent rate above the soil surface during 2015–2017. D-shuttle readings in most cases decreased faster than if due to radioactive decay only.
A. V. Konoplev, T. Yoshihara, Y. Wakiyama   +2 more
doaj   +1 more source

The neglected activation of tantalum in reduced activation materials

Nuclear Materials and Energy, 2023
Due to the expression of “reduced activation”, the severe radioactivity of tantalum (Ta) after neutron irradiation in early decay years is easily neglected. In the presented study, after an irradiation of only 0.3 dpa by fission neutron and followed by a
Lei Zhang, Yufeng Du, Wentuo Han, Xiaoou Yi, Pingping Liu, Kenta Yoshida, Takeshi Toyama, Chi Xu, Qian Zhan, Yasuyoshi Nagai, Somei Ohnuki, Farong Wan   +11 more
doaj   +1 more source

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

Study on Radioactivity Components, Water Quality and Microstructure Characteristic of Volcano Ash as Geopolymer Artificial Aggregate [PDF]

, 2013
The assessments of radioactivity, water quality testing and microstructure characteristic of volcano ash have been examined. The measurement of the 226Ra, 232Th, 40K, and 238U were carried out using radioactive concentration value.
Nizar, I. Khairul, Bakri, A. M. Mustafa Al, Sandu, Ion, Yahya, Zarina, Rafiza, A. R., Hardjito, Djwantoro, Kamarudin, H.   +6 more
core  

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

FEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +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

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

Molecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce, Simone Bini, Marialuisa Sponziello, Giorgio Grani, Giulia Fiscon, Paola Paci, Lorenzo Farina, Rosa Falcone, Valentina Maggisano, Sebastiano Filetti, Cosimo Durante, Antonella Verrienti   +11 more
wiley   +1 more source

Two-dimensional measurement of natural radioactivity of some Archean and Proterozoic rocks from South Africa [PDF]

, 2001
P(論文)The imaging plate is employed as a radiation sensor for obtaining two-dimensional radiation images of natural radioactivity. We used it to evaluate the autoradiography of several types of Archean and Proterozoic granitoids and ultramafic rocks from ...
Tsuchiya, Noriyoshi, Hareyama, Mihoko
core  

Oncogenic DMTF1β promotes cancer cell motility by regulating autophagy through ULK1 stabilization

Molecular Oncology, EarlyView.
In the current study, we demonstrate that the oncogene DMTF1β regulates ULK1 stability by reducing its proteasomal degradation in cancer cells. This stabilization enables ULK1 to induce autophagy, which in turn facilitates cancer cell migration. Consequently, reduced DMTF1β levels lead to decreased autophagy and impaired cancer cell migration.
Jun Xu, Nicolas J. Niklaus, Anna M. Schläfli, Igor Tokarchuk, Magali Humbert, Federico La Manna, Bich Vu, David Maul, Ramin Radpour, Marianna Kruithof‐de Julio, Inti Zlobec, Jörn Dengjel, Bruce E. Torbett, Mario P. Tschan   +13 more
wiley   +1 more source

Retention of 2011 Fukushima Dai-ichi NPP accident-derived 137Cs in the northern North Pacific–Bering Sea

Scientific Reports
Tracing soluble radionuclides is critical for understanding the mechanisms underlying the transport of soluble materials in marine environments. In the present study, we investigated the surface distribution of the concentrations (activities) of 134Cs ...
Mutsuo Inoue, Hayata Mitsunushi, Daichi Koshiishi, Yasunori Hamajima, Seiya Nagao, Daiki Nomura, Yuichiro Kumamoto   +6 more
doaj   +1 more source