Results 31 to 40 of about 205,238 (307)

Insights into Gamma-Ray Spectrometry of Building Stones in the North Temple of the Great Ball Court, Archaeological Zone of Chichen Itza, Mexico

Buildings
Non-destructive tests are especially useful for the assessment of building stones and their deterioration in built cultural heritage. Gamma-ray spectrometry is a non-destructive test that has not been applied extensively in these types of constructions ...
Alejandro Méndez-Gaona, Vsevolod Yutsis, Rubén Alfonso López-Doncel, Claudia Araceli García-Solís, Alfredo Aguillón-Robles   +4 more
doaj   +1 more source

Pile-up correction for coincidence counting using a CAEN 1724 digitizer

Brazilian Journal of Radiation Sciences, 2019
In conventional gamma-ray spectrometry, the probability of pile-up effects is considered to be proportional to the dead-time, and is usually neglected for low dead-times (below 4-5%).
Guilherme Soares Zahn, Iberê Souza Ribeiro Jr, Frederico Antonio Genezini   +2 more
doaj   +1 more source

Gamma-ray line measurements from supernova explosions

, 2017
Gamma ray lines are expected to be emitted as part of the afterglow of supernova explosions, because radioactive decay of freshly synthesised nuclei occurs.
Diehl, Roland
core   +1 more source

New shield for gamma-ray spectrometry [PDF]

, 1969
Gamma-ray shield that can be evacuated, refilled with a clean gas, and pressurized for exclusion of airborne radioactive contaminants effectively lowers background noise.
Brar, S. S., Gustafson, P. F., Nelson, D. M.   +2 more
core   +1 more source

β‐TrCP overexpression enhances cisplatin sensitivity by depleting BRCA1

Molecular Oncology, EarlyView.
Low levels of β‐TrCP (Panel A) allow the accumulation of BRCA1 and CtIP, which facilitate the repair of cisplatin‐induced DNA damage via homologous recombination (HR) and promote tumor cell survival. In contrast, high β‐TrCP expression (Panel B) leads to BRCA1 and CtIP degradation, impairing HR repair, resulting in persistent DNA damage and apoptosis ...
Rocío Jiménez‐Guerrero, Alejandro Belmonte‐Fernández, Mónica González‐Moreno, Laura Rodríguez‐Cordero, Begoña Pérez‐Valderrama, Joaquín Herrero‐Ruíz, Francisco Romero, Carmen Sáez, Miguel Á. Japón   +8 more
wiley   +1 more source

Counting efficiency in gamma-ray spectrometry with different sample volumes for the same geometry

Brazilian Journal of Radiation Sciences, 2022
The aim of this study is to determine an easy and fast method to calculate efficiencies in different volumes, in the same counting geometry, for gamma-ray spectrometry technique.
Marcelo Bessa Nisti, Marcelo Francis Máduar, Sandra Regina Damatto, Marcos Medrado de Alencar   +3 more
doaj   +1 more source

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

Molecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak, Bodee Nutho, Worawat Wattanathana, Narumon Phaonakrop, Bunnatut Panasawatwong, Katharina Erlenbach‐Wuensch, Sittiruk Roytrakul, Regine Schneider‐Stock, Pithi Chanvorachote   +8 more
wiley   +1 more source

Review of Past Nuclear Accidents: Source Terms and Recorded Gamma-Ray Spectra [PDF]

, 1997
Airborne gamma ray spectrometry using high volume scintillation detectors, optionally in conjunction with Ge detectors, has potential for making rapid environmental measurements in response to nuclear accidents.
Allyson, J.D., Cresswell, A., Department of the Environment: Radioactive Substances Division, McConville, P., Sanderson, D.C.W.   +4 more
core  

Radioactive contamination of ZnWO4 crystal scintillators

, 2010
The radioactive contamination of ZnWO4 crystal scintillators has been measured deep underground at the Gran Sasso National Laboratory (LNGS) of the INFN in Italy with a total exposure 3197 kg x h.
Belli, P., Bernabei, R., Cappella, F., Cerulli, R., d'Angelo, S., Danevich, F. A., Dubovik, A. M., Galashov, E. N., Grinyov, B. V., Incicchitti, A., Kobychev, V. V., Laubenstein, M., Nagornaya, L. L., Nozzoli, F., Poda, D. V., Podviyanuk, R. B., Polischuk, O. G., Prosperi, D., Shlegel, V. N., Tretyak, V. I., Tupitsyna, I. A., Vasiliev, Ya. V., Vostretsov, Yu. Ya.   +22 more
core   +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