Results 11 to 20 of about 8,972,343 (398)

Calibration of Tritium Microcalorimeter and Calorimetric Verification of Tritium Samples

open access: yesJournal of Isotopes, 2023
Radioactive isotope decay gives off heat, which is an important basis for calculating the activity of radioactive isotope. In order to measure the heat emitted by tritium decay, the detection limit test, working curve calibration and tritium sample ...
OUYANG Huiping;YUAN Xiaoming;HE Changshui;LI Zhuoxi;ZHANG Peixu;YANG Hongguang
doaj   +1 more source

Concentration Sensitivity of Nucleic Acid and Protein Molecule Detection Using Nanowire Biosensors

open access: yesBiophysica, 2021
The concentration detection limit (DL) of biomacromolecules attainable using a nanowire detector has become a topical issue. A DL of 10−15 M is required to reveal oncological and infectious diseases at an early stage.
Yuri D. Ivanov   +3 more
doaj   +1 more source

Determination of uranium in solutions by the neutron activation analysis method with 252Cf radionuclide neutron source [PDF]

open access: yesNuclear Technology and Radiation Protection, 2021
A determination option for 238U in solutions by the neutron activation analysis was investigated. A radionuclide treatment based on 252Cf was used as a neutron source.
Ivannikov Sergei I.   +2 more
doaj   +1 more source

Spectral Assessment of Organic Matter with Different Composition Using Reflectance Spectroscopy

open access: yesRemote Sensing, 2021
Soil surveys are critical for maintaining sustainable use of natural resources while minimizing harmful impacts to the ecosystem. A key soil attribute for many environmental factors, such as CO2 budget, soil fertility and sustainability, is soil organic ...
Nicolas Francos   +2 more
doaj   +1 more source

A converyor belt-based small article pollution monitoring instrument and performance test

open access: yesHe jishu, 2022
Background At present, most of the contamination detection equipments for small items in domestic nuclear power plants are manually putting in and taking out the testing items, and the operation time is long and the steps are relatively tedious ...
QIAO Minjuan   +6 more
doaj   +1 more source

Calculating the Limits of Detection in Laser-Induced Breakdown Spectroscopy: Not as Easy as It Might Seem

open access: yesApplied Sciences, 2023
The objectives of this paper will be to discuss the issues related to the determination of the limits of detection (LOD) in laser-induced breakdown spectroscopy (LIBS) analytical applications. The derivation of the commonly used ‘3-sigma over slope’ rule
Francesco Poggialini   +6 more
doaj   +1 more source

Graphene and Perovskite-Based Nanocomposite for Both Electrochemical and Gas Sensor Applications: An Overview

open access: yesSensors, 2020
Perovskite and graphene-based nanocomposites have attracted much attention and been proven as promising candidates for both gas (H2S and NH3) and electrochemical (H2O2, CH3OH and glucose) sensor applications.
Tse-Wei Chen   +4 more
doaj   +1 more source

Quantitative Spectrochip-Coupled Lateral Flow Immunoassay Demonstrates Clinical Potential for Overcoming Coronavirus Disease 2019 Pandemic Screening Challenges

open access: yesMicromachines, 2021
As coronavirus disease 2019 (COVID-19) continues to spread around the world, the establishment of decentralized severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) diagnostics and point-of-care testing is invaluable.
Kai-Feng Hung   +8 more
doaj   +1 more source

Luminescent method for determination of nanoscale particles of rare earth elements with sulfosalicylic acid derivatives

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2022
It was of interest to search for luminescent reactions to terbium in complexes with sulfosalicylic acid derivatives and to enhance them by studying the effect of third components (aminopolycarboxylic acids, organic bases and surfactants).
S.A. Elcheparova, A.A. Kokoevа
doaj   +1 more source

Review on the Analysis and Testing Method of Typical Plant Growth Regulators in Environment

open access: yesYankuang ceshi, 2023
Plant growth regulators (PGRs) are defined as naturally occurring or artificially synthesized compounds. The functions of PGRs mainly include accelerating or delaying seed germination, breaking plant dormancy, stimulating or reducing bud elongation ...
HU Xiaolei   +4 more
doaj   +1 more source

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