Results 31 to 40 of about 34,043,766 (224)

Robotics in Ionizing Radiation Environments: Vulnerabilities, Hardening, and Future Directions

open access: yesAdvanced Robotics Research, EarlyView.
Radiation exposure causes cumulative degradation in robotic sensors, actuators, and electronic logic, often leading to undetected failures. This study maps component vulnerabilities, evaluates hardening and shielding strategies, and identifies testing gaps that must be addressed to enable next‐generation radiation‐tolerant robotic systems.
Francis A. K. Djirackor   +4 more
wiley   +1 more source

Establishment of the known radiation field calibration method utilizing a $ ^{137}\mathrm{Cs} $ radionuclide source reference radiation field according to ISO 4037:2019 [PDF]

open access: yesNuclear Technology and Radiation Protection
A gamma irradiation system-based reference radiation field utilizing a $ ^{137}\mathrm{Cs} $ source has been established at the Dongnam Institute of Radiological and Medical Sciences to provide accredited calibration and reference radiation ...
Kye Uk Yong   +8 more
doaj   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Cesium-137 source material for an irradiator [PDF]

open access: yes, 1980
The feasibility of using /sup 137/Cs for the gamma source in sludge irradiators is discussed. It was concluded that /sup 137/Cs, because of its availability in large quantities as a by-product of fission in nuclear reactors, is an excellent candidate ...
Lamb, E.
core  

Probing Electrocatalyst Design for Product Selectivity in CO2 Reduction

open access: yesAdvanced Science, EarlyView.
Selective CO2 electroreduction is controlled by catalyst structure, dynamic surface reconstruction, adsorbate interactions, and reaction microenvironment. This review summarizes Cu‐ and non‐Cu‐based catalysts, single‐atom and molecular systems, degradation pathways, and operando/computational strategies for steering CO2RR toward hydrocarbons ...
Suvodeep Sen   +5 more
wiley   +1 more source

Enhanced radioisotope identification via dual-spectrum analysis using scintillation detectors

open access: yesNuclear Engineering and Technology
Accurate identification of radionuclides in complex mixtures is often hindered by spectral overlap, particularly when using low-resolution detectors. This study presents an enhanced approach that simultaneously utilizes beta and gamma spectra acquired ...
Aydin Ghalehasadi   +3 more
doaj   +1 more source

Design and Construction of a Multi-Channel Analyzer (MCA) with Communication Capability Through USB [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2014
A PC-Based gamma-ray spectrometer has been developed with communication capability through the USB port. A 12-bit pipelined Analog-To-Digital Converter (ADC) associated with a FPGA operating at 12MHz is employed for pulse height analysis from a built-in ...
P Horriyat Pajooh   +2 more
doaj  

Evaluation of Dose Distribution Homogeneity and Accuracy for a Cs-137 Source Using Thermoluminescent Dosimeters (CaSO₄:Dy and LiF:Mg,Ti) [PDF]

open access: yesIranian Journal of Medical Physics
Introduction: Cesium-137 (Cs-137) is a widely used source of ionizing radiation across various fields.Thermoluminescent dosimeters (TLDs), due to their sensitivity and reliability, are frequently employed to measure radiation dose in medical, industrial,
Yuni Warty   +4 more
doaj   +1 more source

Neutron and Gamma-Ray Detection System Coupled to a Multirotor for Screening of Shipping Container Cargo

open access: yesSensors, 2022
In order to detect special nuclear materials and other radioactive materials in Security and Defense scenarios, normally, a combination of neutron and gamma-ray detection systems is used.
Luís Marques   +8 more
doaj   +1 more source

From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits

open access: yesAdvanced Science, EarlyView.
This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang   +5 more
wiley   +1 more source

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