Results 71 to 80 of about 90,482 (346)

Research progress of the detection and analysis methods of heavy metals in plants

open access: yesFrontiers in Plant Science
Heavy metal (HM)-induced stress can lead to the enrichment of HMs in plants thereby threatening people’s lives and health via the food chain. For this reason, there is an urgent need for some reliable and practical techniques to detect and analyze the ...
Shuang He   +8 more
doaj   +1 more source

Cold heteronuclear atom-ion collisions

open access: yes, 2010
We study cold heteronuclear atom ion collisions by immersing a trapped single ion into an ultracold atomic cloud. Using ultracold atoms as reaction targets, our measurement is sensitive to elastic collisions with extremely small energy transfer.
Carlo Sias   +5 more
core   +1 more source

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

open access: yesAdvanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
wiley   +1 more source

Evaluation of Mercury Environmental Pollution Based on Luminescence Analysis

open access: yesChemical Engineering Transactions, 2017
The contents of total mercury and dissolved mercury in the water samples and soil samples around the Qin Shihuang mausoleum in Lintong District of Xi'an were measured by cold atomic fluorescence spectrometry. The results showed that the amount of mercury
Lifeng Gao
doaj   +1 more source

Geochemical Characteristics of Selenium in Rocks from the Western Sichuan Plateau

open access: yesYankuang ceshi, 2020
BACKGROUND Studies on soil, water and other media in the Western Sichuan Plateau show that the selenium content in this area is very low. The selenium concentrations of the natural soil profile, surface soil, sediment, surface water, and groundwater are ...
YANG Yan-ping   +5 more
doaj   +1 more source

High‐Rate Deposition and Characterization Study of CoZrO Films for On‐Chip Power Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a high‐rate reactive sputtering process for CoZrO films, aimed at large‐scale production of on‐chip magnetic components compatible with complementary metal oxide semiconductor (CMOS) fabrication. Characterization of the deposited films reveals that ideal magnetic properties require chemical compositions in a narrow Co:O range and ...
Elaine Ng   +6 more
wiley   +1 more source

Coupled techniques for arsenic speciation in food and drinking water: A review [PDF]

open access: yes, 2015
Arsenic is ubiquitous in nature appearing in various chemical forms. The toxicity, environmental mobility and accumulation of As in living organisms depends on the form in which the element exists, thus requiring techniques which can identify specific ...
Foulkes, ME, Hill, SJ, Sadee, B
core   +2 more sources

Laser Additive Manufacturing of Oxide‐Dispersion‐Strengthened Steels: A Simulation‐Based Comparison Between Powder Bed Fusion and Direct Energy Deposition

open access: yesAdvanced Engineering Materials, EarlyView.
Controlling the size and distribution of dispersoids is essential for optimizing the performance of oxide‐dispersion‐strengthened steels. This study focuses on nanoparticle dispersion and agglomeration during laser additive manufacturing of Fe20Cr alloy reinforced with ZrO 2 nanoparticles. Utilizing multiphysics phase‐field simulations and nanoparticle
Somnath Bharech   +6 more
wiley   +1 more source

Femtosecond Single‐ and Double‐Pulse Fabrication of Periodic Nanostructures on Stainless Steel for Surface‐Enhanced Raman Spectroscopy

open access: yesAdvanced Engineering Materials, EarlyView.
Periodic submicron features are fabricated on 304 stainless steel using single and double femtosecond laser pulses. By adjusting polarization, fluence, and inter‐pulse delay, 1D and 2D nanostructures are formed. Enhanced hydrophobicity and dense surface‐enhanced Raman spectroscopy hotspots enable analyte detection down to 10−10 M with good ...
Balaji Baskar   +3 more
wiley   +1 more source

Contamination by heavy metals from mining activities: An ecological impact assessment of Mura and Kimpulande Rivers, Democratic Republic of the Congo

open access: yesWatershed Ecology and the Environment, 2022
The contamination levels and distribution of heavy metals were assessed in riverbed sediments and water column samples from Mura and Kimpulande Rivers, both impacted by copper-cobalt and gold mining activities.
Alex Banze wa Mutombo   +9 more
doaj  

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