Results 41 to 50 of about 37,948 (196)

210Pb numa região anômala de Pocinhos-Paraíba

Brazilian Journal of Radiation Sciences, 2018
From 1979 to 1982, the extinct company NUCLEBRAS carried out studies on the occurrence of uranium in Pocinhos, a city located in the harsh region of the State of Paraíba, where dairy farms currently exist.
Cleomacio Miguel da Silva, Crescêncio Andrade Silva Filho, Carlos Eduardo de Oliveira Costa Júnior   +2 more
doaj   +1 more source

Photonuclear Population of 229m,gTh in Th‐Doped Crystals Toward Nuclear Clock Development

Advanced Science, EarlyView.
This study demonstrates a novel photonuclear approach for producing the nuclear clock isomer 229mTh in thorium‐doped crystals, overcoming current supply limitations. Through cross‐section calculations and Monte Carlo simulations, we identify optimal crystal materials and irradiation conditions, achieving high signal‐to‐noise ratios.
Hao‐Yang Lan, Di Wu, Mei‐Zhi Wang, Zhong‐Yi Chen, Jian‐Feng Lv, Yu‐Hui Xia, Zhe‐Nan Wang, Wen Luo, Xin‐Lu Xu, Xue‐Qing Yan   +9 more
wiley   +1 more source

NATURAL RADIOACTIVITY IN HUMAN ENVIRONMENT

Human Research in Rehabilitation, 2011
Since the radioactivity can not be detected by senses, the most usual reaction to it is fear of unknown. The majority of non-professionals share the common concept of radioactivity as something mysterious and dangerous.
Ivana Vukanac, Aleksandar Kandić, Aleksandar Kandić   +2 more
doaj   +2 more sources

Integrating Machine Learning With Constant‐Potential Simulation to Unravel Charge‐Transfer Mechanisms in Electrochemical Nitrogen Fixation

Advanced Science, EarlyView.
Integrating interpretable machine learning with the fixed‐potential method reveals a novel mechanism: the catalytic activity of the electrochemical nitrogen reduction reaction is governed by partial charge transfer, induced by variations in the intermediate potential of zero charge under constant potential.
Yufei Xue, Dushuo Feng, Yuefei Zhang, Yang Zhang, Yalong Jiao, Aijun Du, Guoping Gao   +6 more
wiley   +1 more source

Nanozymes for Liver Disease Therapy: Advances in Catalytic Activity, Targeting Strategies, and Clinical Translation

Advanced Science, EarlyView.
Nanozymes, as enzyme‐mimicking nanomaterials, exhibit unique catalytic properties for the treatment of liver diseases. By regulating redox homeostasis, modulating immune responses, and enabling targeted delivery, nanozymes overcome the limitations of natural enzymes.
Xiandi Meng, Ge Zhu, Siyu Sun, Wenbo Yao, Yuning Zhang, Yong‐Guang Yang, Tianmeng Sun   +6 more
wiley   +1 more source

Estimation of natural radioactivity levels in soil samples from the Navalgund region of Dharwad district, Karnataka, India

Radiation Protection and Environment
This study aims to estimate the natural radioactivity levels in soil samples from the Navalgund region of Dharwad District, Karnataka. The concentrations of naturally occurring radionuclides 238U, 232Th, and ⁴⁰K were measured using gamma spectroscopy ...
Jayashri B. Mutagar, Nagraj Channappa, Basavaraj Rachappa Kerur   +2 more
doaj   +1 more source

Highly Efficient Extraction of 212 Pb/212Bi from the Decay Chain of 232Th‐Based on Anion Exchange in Bromide Medium

Advanced Science, EarlyView.
This work provides an effective strategy for selectively extracting 212Pb and 212Bi from the decay chain of 232Th as well as its mechanism illustration. Using the novel strategy, 2.07 MBq of 212Pb is successfully separated from 232Th and its daughters, which enables the supply of 212Pb/212Bi directly from the abundant natural thorium resource to be ...
Lifeng Chen, Wannian Feng, Yuezhou Wei, Xuexiang He, Shaoying Wang, Zhongyuan Zhou, Qiang Wu, Ningchao Zheng, Xiangbiao Yin, Wenlong Li, Lingling Su, Shunyan Ning   +11 more
wiley   +1 more source

Natural radioactivity of Pamir mineral waters (Tajikistan) [PDF]

E3S Web of Conferences
In the present article, radon and uranium concentrations of nineteen occurrences of mineral waters of Pamir are considered in conjunction with geological conditions and physical and chemical characteristics.
Chelnokov George, Lavrushin Vasilii, Kharitonova Natalia, Pavlov Andrey   +3 more
doaj   +1 more source

Enzyme‐Activated MRI for In Vivo Glucose Imaging via a Biodegradable Chromium Nanoprobe

Advanced Science, EarlyView.
Enzyme‐activated MRI (eaMRI) using a biodegradable CrGOx@Lip nanoprobe enables glucose‐specific imaging in vivo. GOx catalyzes glucose oxidation, triggering in situ formation of paramagnetic chromium gluconate and amplifying T1. This radiation‐free strategy maps tumor glucose uptake via the Warburg‐effect, quantifies hepatic glucose accumulation in ...
Yan Xu, Weitao Yang, Yanjing Yun, Hui Wang, Zhuoyao Wu, Youyi Yu, Bingbo Zhang   +6 more
wiley   +1 more source

Design and optimization of processes for recovering rare earth elements from end‐of‐life permanent magnets

AIChE Journal, EarlyView.
Abstract Recovery of rare earth elements (REEs) from end‐of‐life (EOL) products represents a strategic opportunity to strengthen the domestic supply chain for rare earth elements. This work presents a superstructure‐based optimization framework for finding the most economical processing pathway for different EOL rare earth permanent magnets (REPMs ...
Chris Laliwala, Oluwamayowa O. Amusat, Akintomiwa Ojo, Alejandro Garciadiego, Thomas Tarka, Debangsu Bhattacharyya, Ana I. Torres   +6 more
wiley   +1 more source