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1661
Towards the Sustainable Removal of Heavy Metals from Wastewater Using <i>Arthrospira platensis</i>: A Laboratory-Scale Approach in the Context of a Green Circular Economy
Published 2025-01-01“…The heavy metal removal efficiency of <i>A. platensis</i> cultures was evaluated using atomic absorption spectroscopy (AAS). Additionally, the cultures were examined using Fourier transform infrared (FTIR) spectroscopy, Near-Infrared (NIR) Spectroscopy, UV-Vis spectrophotometry, and optical microscopy, together with pH and electrical conductivity (EC) measurements to evaluate the quality of the cultures and the changes induced by heavy metal stress. …”
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1662
Analytical methods for nanomaterials investigation in food and food-related materials
Published 2025-06-01“…., X-ray (X-ray microscopy and X-ray diffraction), scanning microscopies (electron microscopy and atomic force microscopy), optical spectroscopies (infrared spectroscopy and Raman spectroscopy), and mass spectrometry, discussing their benefits and drawbacks. …”
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1663
Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria
Published 2025-03-01“…The metal levels were determined using Atomic Absorption Spectrophotometer. Results: The findings showed a mean distribution pattern of Mn > Zn > Cu > Pb > Cd > Al. …”
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1664
Cement Dust Exposure and Perturbations in Some Elements and Lung and Liver Functions of Cement Factory Workers
Published 2016-01-01“…PEFR, liver function {aspartate and alanine transaminases (AST and ALT) and total and conjugated bilirubin (TB and CB)}, and serum elements {lead (Pb), copper (Cu), manganese (Mn), iron (Fe), cadmium (Cd), selenium (Se), chromium (Cr), zinc (Zn), and arsenic (As)} were determined using peak flow meter, colorimetry, and atomic absorption spectrometry, respectively. Data were analysed using ANOVA and correlation at p=0.05. …”
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1665
Combined MSC and GLP-1 Therapy Modulates Collagen Remodeling and Apoptosis following Myocardial Infarction
Published 2016-01-01“…After four weeks, infarcted areas were imaged using atomic force microscopy, demonstrating significant alterations between groups in the structure of collagen fibrils and resulting scar. …”
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1666
Layered metal carbo–selenide Nb2CSe2 with van der Waals interlayer coupling
Published 2025-01-01“…Nb2CSe2 features Se−Nb−C−Nb−Se quintuple atomic layers. These layers are stacked in Bernal mode. …”
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1667
Microstructural transition from ZrO₂ to Zr–Al intermetallics and property evolution in AA5051 composites
Published 2025-03-01“…AA5051 is lightweight and has excellent corrosion resistance, but it loses strength at higher temperatures as magnesium atoms diffuse more readily within the aluminium matrix, reducing the uniformity of the solid solution and weakening the alloy's strengthening mechanism. …”
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1668
Secondary Metabolites from the Mangrove Ecosystem-Derived Fungi <i>Penicillium</i> spp.: Chemical Diversity and Biological Activity
Published 2024-12-01“…Among these natural products, the plausible biosynthetic pathways of 37 compounds were also proposed; 11 compounds have novel skeleton structures, and 26 compounds contain halogen atoms. A total of 126 compounds showed biological activities, such as cytotoxic, antifungal, antibacterial, anti-inflammatory, and <i>α</i>-glucosidase-inhibitory activities, and 11 compounds exhibited diverse biological activities. …”
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1669
Investigation on the Structure and Electrochemical Properties of La-Ce-Mg-Al-Ni Hydrogen Storage Alloy
Published 2013-01-01“…EDS analyse shows that the content of Mg is 3.48% (atom) which coincide well with the designed composition of the electrode alloy. …”
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1670
Surface Modification by Combination of Dip-Pen Nanolithography and Soft Lithography for Reduction of Bacterial Adhesion
Published 2018-01-01“…Optical microscopy and atomic force microscopy (AFM) were used to characterize the patterns. …”
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1671
Formation and Device Application of Ge Nanowire Heterostructures via Rapid Thermal Annealing
Published 2011-01-01“…Scanning electron microscopy and transmission electron microscopy demonstrated a wide temperature range of 400~500°C to convert the Ge nanowire to a single-crystalline Ni2Ge/Ge/Ni2Ge nanowire heterostructure with atomically sharp interfaces. More importantly, we studied the effect of oxide confinement during the formation of nickel germanides in a Ge nanowire. …”
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1672
Mixing-enthalpy modulation on phase transformation in the gradient chemical core/shell high-entropy shape-memory alloys
Published 2025-03-01“…The dendritic microstructure in Cu15Ni35Ti20(HfZr)30 exhibits the mixing enthalpy-driven pronounced composition inhomogeneity of an Ni-Hf-rich core and Cu-Zr-Ti-rich shell, demonstrated by thermodynamics calculations and second nearest-neighbor modified embedded atom method (2NN MEAM) formalism. The shell acts as an interfacial energy barrier for the stable martensitic transformation that occurred primarily in the effective Ni-Hf-rich core of the Cu15Ni35Ti20(HfZr)30. …”
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1673
Novel Insights into Surface Energies and Enhanced Gas-Sensing Capabilities of ZnGa<sub>2</sub>O<sub>4</sub>(111) via Ab Initio Studies
Published 2025-01-01“…This study investigates the surface energies and work function changes in ZnGa<sub>2</sub>O<sub>4</sub>(111) surfaces with different atomic terminations using ab initio density functional theory. …”
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1674
PLGA confers upon conventional nonfluorescent molecules luminescent properties to trigger 1O2-induced pyroptosis and immune response in tumors
Published 2025-01-01“…This exploration revealed that surface passivation atoms play a dominant role in governing the fluorescence emission of PLGA-NPs. …”
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1675
Analysis of heavy metal pollution of chromium (Cr) and nickel (Ni) in soil at Putri Cempo Landfill, Indonesia
Published 2025-01-01“…Analysis of Cr and Ni content was carried out using Atomic Absorption Spectrophotometry (AAS). Data analysis was carried out by comparing the content of heavy metals in the soil at Putri Cempo Landfill with the SNI on the Threshold Limit Value (NAB) of Heavy Metals in Sediment/Soil. …”
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1676
Kinetic and isotherm studies of nickel and cadmium ions adsorption onto Clay-Chitosan composite
Published 2025-01-01“…The Ni (II) and Cd (II) concentrations were precisely determined using inductively coupled plasma atomic emission spectroscopy (ICP-AES). The obtained results revealed that the maximum adsorbed quantities obtained were 153.086 mg/g for Ni (II) and 61.093 mg/g for Cd (II), demonstrating the excellent performance of the composite. …”
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1677
Complexed Crystal Structure of Saccharomyces cerevisiae Dihydroorotase with Inhibitor 5-Fluoroorotate Reveals a New Binding Mode
Published 2021-01-01“…However, our complexed structure revealed that ScDHOase bound 5-FOA differently from EcDHOase. 5-FOA ligated the Zn atoms in the active site of ScDHOase. In addition, 5-FOA bound to ScDHOase through the loop-in mode. …”
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1678
Mechanism and Optimized Process Conditions of Forming One-Dimensional ZnO Nanorods with Al-Doping by Electrodeposition Method
Published 2021-01-01“…The results showed that Al atoms were successfully doped into ZnO crystal lattice, and the morphologies could be controlled by adjusting the Al3+/Zn2+ ratio in the precursors and deposition time. …”
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1679
ELEVATED BLOOD LEAD LEVELS IN WOMEN OF REPRODUCTIVE AGE DUE TO LEADS EXPOSURE FROM CONTAMINATED WATER
Published 2024-03-01“…Subsequently, sample preparation was conducted, and the samples were analyzed using an atomic absorption spectrophotometer. The Spearman correlation test was employed to analyze the data and establish any potential correlations. …”
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1680
Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam
Published 2020-01-01“…Meanwhile, Cs-137/Sr-90 ratios in the sediment samples at the selected locations were 1.51, 2.06, and 1.88, respectively, which is equal to or greater than the corresponding value for global sedimentation according to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Correlations between Sr-90, Cs-137, and organic carbon content were detected in this study. …”
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