U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject "absorption" Remove constraint Subject: "absorption"
Start Over

Search

71,130  Search Results

« Previous | 1 - 20 of 71,130 |
Number of results to display per page

Search Results

1. Fluorine-doped BiVO4 photocatalyst: Preferential cleavage of C−N bond for green degradation of glyphosate

Author:
Yunlong Chen; Yingping Huang; Hailin Tian; Liqun Ye; Ruiping Li; Chuncheng Chen; Zhongxu Dai; Di Huang
Source:
Journal of environmental sciences (China) 2023 v.127 pp. 60-68
ISSN:
1001-0742
Subject:
absorption,   etc   ; Fourier transform infrared spectroscopy; adsorption; glyphosate; human health; pH; photocatalysts; photolysis; toxicity; China;     Show all 10 Subjects
Abstract:
... With increasing concerns on the environment and human health, the degradation of glyphosate through the formation of less toxic intermediates is of great importance. Among the developed methods for the degradation of glyphosate, photodegradation is a clean and efficient strategy. In this work, we report a new photocatalyst by doping F ion on BiVO₄ that can efficiently degrade glyphosate and reduce ...
DOI:
10.1016/j.jes.2022.04.013

2. Significant coal combustion contribution to water-soluble brown carbon during winter in Xingtai, China: Optical properties and sources

Author:
Dapeng Li; Can Wu; Si Zhang; Yali Lei; Shaojun Lv; Wei Du; Shijie Liu; Fan Zhang; Xiaodi Liu; Lang Liu; Jingjing Meng; Yuesi Wang; Jian Gao; Gehui Wang
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 892-900
ISSN:
1001-0742
Subject:
absorption,   etc   ; acidity; aerosols; biomass; carbon; clean energy; coal; combustion; dust; heat; pH; pollution; seasonal variation; water solubility; winter; China;     Show all 16 Subjects
Abstract:
... To understand the characteristics of atmospheric brown carbon (BrC), daily PM₂.₅ samples in Xingtai, a small city in North China Plain (NCP), during the four seasons of 2018-2019, were collected and analyzed for optical properties and chemical compositions. The light absorption at 365 nm (absλ₌₃₆₅ ₙₘ) displayed a strong seasonal variation with the highest value in winter (29.0±14.3 M/m), which was ...
DOI:
10.1016/j.jes.2022.02.026

3. Accumulation, transportation, and distribution of tetracycline and cadmium in rice

Author:
Chunfeng He; Jini Zhou; Chen Yang; Zhiyi Song; Junheng He; Ziqing Huang; Yurong Deng; Jinling Wang; Yu Xiong; Zhi Dang
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 58-69
ISSN:
1001-0742
Subject:
absorption,   etc   ; cadmium; heavy metals; hydroponics; mass spectrometry; pollutants; pollution; rice; root growth; root tips; stele; tetracycline; tillering; toxicity; transportation; China;     Show all 16 Subjects
Abstract:
... Co-exposure to heavy metal and antibiotic pollution might result in complexation and synergistic interactions, affecting rice growth and further exacerbating pollutant enrichment. Therefore, our study sought to clarify the influence of different Tetracycline (TC) and Cadmium(Cd) concentration ratios (both alone and combined) on rice growth, pollutant accumulation, and transportation during the til ...
DOI:
10.1016/j.jes.2022.03.034

4. Storage of wafer cookies: Assessment by destructive techniques, and non-destructive spectral detection methods

Author:
Chiara Cevoli; Andrea Evangelisti; Paolo Gradari; Angelo Fabbri
Source:
Journal of food engineering 2023 v.336 pp. 111209
ISSN:
0260-8774
Subject:
absorption,   etc   ; air; chocolate; color; cookies; cream; hardness; image analysis; near-infrared spectroscopy; shelf life; storage time; water activity; water content;     Show all 13 Subjects
Abstract:
... Wafer cookies combine two or more layers of wafer sheets with intermediate layers of cream filling and later coating with chocolate. During storage, wafer cookie quality, especially in terms of mechanical properties, is mainly affected by moisture migration from the cream or chocolate and moisture absorption from air. This study aimed to assess the storage of wafer cookies by destructive (water ac ...
DOI:
10.1016/j.jfoodeng.2022.111209

5. Construction of Ag2CO3/BiOBr/CdS ternary composite photocatalyst with improved visible-light photocatalytic activity on tetracycline molecule degradation

Author:
Kaliyappan Perumal; Shajahan Shanavas; Tansir Ahamad; Annamalai Karthigeyan; Padmanabhan Murugakoothan
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 47-60
ISSN:
1001-0742
Subject:
absorption,   etc   ; electron paramagnetic resonance spectroscopy; irradiation; pH; photocatalysis; photocatalysts; photoluminescence; photolysis; pollution control; synergism; tetracycline; transmission electron microscopy; ultraviolet-visible spectroscopy; wastewater; China;     Show all 15 Subjects
Abstract:
... Photocatalytic degradation was considered as a best strategy for the removal of antibiotic drug pollutants from wastewater. The photocatalyst of ABC (Ag₂CO₃/BiOBr/CdS) composite synthesized by hydrothermal and precipitation method. The ABC composite used to investigate the degradation activity of tetracycline (TC) under visible light irradiation. The physicochemical characterization methods (e.g. ...
DOI:
10.1016/j.jes.2021.10.021

6. Enhanced activity of ZnS (111) by N/Cu co-doping: Accelerated degradation of organic pollutants under visible light

Author:
Guofei Jiang; Benjie Zhu; Junzhi Sun; Fang Liu; Yongqiang Wang; Chaocheng Zhao
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 244-257
ISSN:
1001-0742
Subject:
absorption,   etc   ; 2,4-dichlorophenol; adsorption; density functional theory; energy; hot water treatment; light; nanospheres; photocatalysis; photocatalysts; surface area; tetracycline; texture; wastewater; water treatment; China;     Show all 16 Subjects
Abstract:
... High-efficiency photocatalysts are of great significance for the application of photocatalytic technology in water treatment. In this study, N/Cu co-doped ZnS nanosphere photocatalyst (N/Cu-ZnS) is synthesized by a hydrothermal method for the first time. After doping, the texture of nanosphere becomes loose, the nanometer diameter is reduced, making the specific surface area of catalyst increased ...
DOI:
10.1016/j.jes.2021.12.023

7. Efficient degradation of organic pollutants by S-NaTaO3/biochar under visible light and the photocatalytic performance of a permonosulfate-based dual-effect catalytic system

Author:
Yuehui Tai; Jinlong Sun; Haoran Tian; Fuyue Liu; Boyu Han; Wei Fu; Zhangpei Liu; Xiuye Yang; Qifeng Liu
Source:
Journal of environmental sciences (China) 2023 v.125 pp. 388-400
ISSN:
1001-0742
Subject:
absorption,   etc   ; acid orange 7; biochar; ciprofloxacin; energy efficiency; hot water treatment; irradiation; methyl orange; photocatalysis; photocatalysts; pollution; probability; rhodamines; solar energy; sulfur; tetracycline; China;     Show all 17 Subjects
Abstract:
... Removing large concentrations of organic pollutants from water efficiently and quickly under visible light is essential to developing photocatalytic technology and improving solar energy efficiency. This study used a simple hydrothermal method to prepare a non-metallic, S-doped NaTaO₃ (S-NTO) photocatalyst, which was then loaded onto biochar (BC) to form a S-NTO/BC composite photocatalyst. After u ...
DOI:
10.1016/j.jes.2022.01.028

8. Variability in fecal metabolome depending on age, PFBS pollutant, and fecal transplantation in zebrafish: A non-invasive diagnosis of health

Author:
Baili Sun; Mengyuan Liu; Lizhu Tang; Xiangzhen Zhou; Chenyan Hu; Lianguo Chen
Source:
Journal of environmental sciences (China) 2023 v.127 pp. 530-540
ISSN:
1001-0742
Subject:
absorption,   etc   ; Danio rerio; adults; amino acids; carbohydrates; digestion; early diagnosis; feces; intestinal microorganisms; lipids; metabolites; metabolome; metabolomics; neurotransmitters; pollutants; prediction; steroid hormones; synaptic transmission; therapeutics; toxicity; toxicology; China;     Show all 22 Subjects
Abstract:
... To protect the wellbeing of research animals, certain non-invasive measures are in increasing need to facilitate an early diagnosis of health and toxicity. In this study, feces specimen was collected from adult zebrafish to profile the metabolome fingerprint. Variability in fecal metabolite composition was also distinguished as a result of aging, perfluorobutanesulfonate (PFBS) toxicant, and fecal ...
DOI:
10.1016/j.jes.2022.06.019

9. How Fluorine Introduction Solves the Spinel Transition, a Fundamental Problem of Mn-Based Positive Electrodes

Author:
Yuji Mahara; Naoyuki Nagasako; Hideaki Oka; Yasuhito Kondo; Satoru Kosaka; Hiroyuki Nakano; Takamasa Nonaka; Yoshinari Makimura
Source:
ACS applied materials & interfaces 2022 v.14 no.21 pp. 24321-24331
ISSN:
1944-8252
Subject:
X-ray absorption spectroscopy; absorption,   etc   ; X-ray diffraction; electrodes; fluorine;     Show all 5 Subjects
Abstract:
... In pursuit of high-capacity Mn-based oxides as positive electrode materials for lithium-ion batteries, the changes in the charge–discharge curve due to the spinel transition still stand in the way of the cycling stability. We found in this study that Li₁.₁₂Mn₀.₇₄O₁.₆₀F₀.₄₀ (LMOF05) positive electrodes with a loose-crystalline rock salt structure (LCRS), in which F is placed near Mn, show a stable ...
DOI:
10.1021/acsami.2c02868

10. Chemometric classification and discrimination of herbal dietary supplements based on ICP-MS elemental profiling

Author:
Anica Benutić; Bernardo Marciuš; Ivan Nemet; Sanda Rončević
Source:
Journal of food composition and analysis 2022 v.114 pp. 104794
ISSN:
0889-1575
Subject:
absorption; atomic absorption spectrometry,   etc   ; chemometrics; cluster analysis; food composition; hydrides; markets; selenium;     Show all 8 Subjects
Abstract:
... This study presents the determination of elemental profiling of representative dietary herbal supplements which were purchased on the Croatian market in the forms of capsules, powders, jams or liquids. Using inductively coupled plasma mass spectrometry (ICP-MS), twenty-four elements in eighty-seven different samples were determined. Electrothermal atomic absorption with hydride generation techniqu ...
DOI:
10.1016/j.jfca.2022.104794

11. Antimony speciation, phytochelatin stimulation and toxicity in plants

Author:
Sepide Abbasi; Dane T. Lamb; Girish Choppala; Edward D. Burton; Mallavarapu Megharaj
Source:
Environmental pollution 2022 v.305 pp. 119305
ISSN:
0269-7491
Subject:
X-ray absorption spectroscopy; absorption,   etc   ; X-radiation; antimony; photosynthesis; phytotoxicity; pollutants; pollution;     Show all 8 Subjects
Abstract:
... Antimony (Sb) is a toxic metalloid that has been listed as a priority pollutant. The environmental impacts of Sb have recently attracted attention, but its phytotoxicity and biological transformation remain poorly understood. In this study, Sb speciation and transformation in plant roots was quantified by Sb K-edge X-ray absorption spectroscopy. In addition, the phytotoxicity of antimonate (Sbⱽ) o ...
DOI:
10.1016/j.envpol.2022.119305

12. Mechanisms of uptake and transport of particulate formulations in the small intestine

Author:
Ludivine Delon; Rachel J. Gibson; Clive A Prestidge; Benjamin Thierry
Source:
Journal of controlled release 2022 v.343 pp. 584-599
ISSN:
0168-3659
Subject:
absorption; intestinal absorption,   etc   ; bioavailability; enterocytes; humans; migratory behavior; permeability; small intestine; solubility;     Show all 9 Subjects
Abstract:
... Micro- and nano-scale particulate formulations are widely investigated towards improving the oral bioavailability of both biologics and drugs with low solubility and/or low intestinal permeability. Particulate formulations harnessing physiological intestinal transport pathways have recently yielded remarkably high oral bioavailabilities, illustrating the need for better understanding the specific ...
DOI:
10.1016/j.jconrel.2022.02.006

13. Unraveling the Molecular Details of the “Gate Opening” Phenomenon in ZIF-8 with X-ray Absorption Spectroscopy

Author:
Roberto Boada; Jesús Chaboy; Shusaku Hayama; Luke L. Keenan; Adam A. Freeman; Mónica Amboage; Sofía Díaz-Moreno
Source:
Journal of physical chemistry 2022 v.126 no.13 pp. 5935-5943
ISSN:
1932-7455
Subject:
X-ray absorption spectroscopy; absorption,   etc   ; X-radiation; adsorption; ligands; models; nitrogen; thermodynamics;     Show all 8 Subjects
Abstract:
... The local structural changes associated with the ZIF-8 framework flexibility upon nitrogen gas adsorption have been studied by in situ X-ray absorption spectroscopy (XAS) and high-energy-resolution fluorescence-detected X-ray absorption near-edge structure (HERFD-XANES) spectroscopy. Different thermodynamic conditions (isobar and isotherm) have been used to explore the so-called “gate opening” tra ...
DOI:
10.1021/acs.jpcc.2c00373

14. Inverse design of stable spinel compounds with high optical absorption via materials genome engineering

Author:
Qingde Sun; Su-Huai Wei
Source:
Journal of materials chemistry A 2022 v.10 no.23 pp. 12503-12509
ISSN:
2050-7496
Subject:
absorption,   etc   ; cations; semiconductors;     Show all 3 Subjects
Abstract:
... Conventional semiconductors, e.g., Si and GaAs with tetrahedral coordination (four-fold) structures, possess good stability but relatively low optical absorption compared with halide perovskites with octahedral coordination (six-fold) structures, which exhibit superior optical absorption but relatively poor stability. It is thus desirable to combine the complementary properties of four-fold and si ...
DOI:
10.1039/d2ta02306g

15. Mechanisms of temperature-dependent oxygen absorption/release and appearance of intermediate phase in κ-Ce₂Zr₂O₈: study based on oxygen vacancy formation energy computations

Author:
Hirotoshi Hirai; Ryosuke Jinnouchi
Source:
RSC advances 2022 v.12 no.26 pp. 16717-16722
ISSN:
2046-2069
Subject:
absorption,   etc   ; energy; oxygen;     Show all 3 Subjects
Abstract:
... This study clarified the mechanisms of the temperature-dependent oxygen absorption/release properties and appearance of the intermediate phase for κ-Ce₂Zr₂O₈, which is known to have a high oxygen storage/release capacity (OSC). First-principle computations revealed that the vacancy formation energies depend on the number of vacancies and can be categorized into two groups: low-energy and high-ener ...
DOI:
10.1039/d2ra02419e

16. Microfluidic Assembly of Microblocks into Interlocked Structures for Enhanced Strength and Toughness

Author:
Chenchen Zhou; Shuaishuai Liang; Yongjian Li; Jiang Li; Haosheng Chen
Source:
ACS applied materials & interfaces 2022 v.14 no.5 pp. 7261-7269
ISSN:
1944-8252
Subject:
absorption,   etc   ; deformation; energy;     Show all 3 Subjects
Abstract:
... Compared with monolithic materials, topologically interlocked materials (TIMs) exhibit higher toughness based on their enhanced crack deflection and deformation tolerance. Importantly, by reducing the block size of TIMs, their structural strength can also be improved due to the reduced flexural span. However, the assembly of microscale blocks remains a huge challenge due to the inadequacy of nanos ...
DOI:
10.1021/acsami.1c21408

17. Reduced Auger Coefficient through Efficient Carrier Capture and Improved Radiative Efficiency from the Broadband Optical Cavity: A Mechanism for Potential Droop Mitigation in InGaN/GaN LEDs

Author:
Tarni Aggarwal; Ankit Udai; Pratim K. Saha; Swaroop Ganguly; Pallab Bhattacharya; Dipankar Saha
Source:
ACS applied materials & interfaces 2022 v.14 no.11 pp. 13812-13819
ISSN:
1944-8252
Subject:
absorption,   etc   ; photons; spectroscopy;     Show all 3 Subjects
Abstract:
... Efficiency droop at high carrier-injection regimes is a matter of concern in InGaN/GaN quantum-confined heterostructure-based light-emitting diodes (LEDs). Processes such as Shockley–Reed–Hall and Auger recombinations, electron–hole wavefunction separation from polarization charges, carrier leakage, and current crowding are identified as the primary contributors to efficiency droop. Auger recombin ...
DOI:
10.1021/acsami.1c20003

18. 3,6-Carbazoylene Octaphyrin (1.0.0.0.1.0.0.0) and Its Bis-BF₂ Complex

Author:
Hao Chen; Xusheng Shi; Yipeng Lun; Yan Xu; Tian Lu; Zhiming Duan; Min Shao; Jonathan L. Sessler; Huakang Yu; Chuanhu Lei
Source:
Journal of the American Chemical Society 2022 v.144 no.18 pp. 8194-8203
ISSN:
1520-5126
Subject:
absorption,   etc   ; lasers; protonation;     Show all 3 Subjects
Abstract:
... 3,6-Carbazole precursors were used to prepare an octaphyrin. The conformation and electronic structure of the system could be modulated through trifluoroacetate (TFA) protonation and BF₂ complexation. The resulting nonaromatic macrocyclic complexes, 2-2TFA and 2-2BF₂, displayed noteworthy photophysical properties. For instance, the diprotonated species 2-2TFA showed a strong panchromic absorption ...
DOI:
10.1021/jacs.2c01240

19. Enhanced Electromagnetic-Wave Absorbing Performances and Corrosion Resistance via Tuning Ti Contents in FeCoNiCuTiₓ High-Entropy Alloys

Author:
Jianping Yang; Zhonghao Liu; Haoran Zhou; Lei Jia; Anhua Wu; Linwen Jiang
Source:
ACS applied materials & interfaces 2022 v.14 no.10 pp. 12375-12384
ISSN:
1944-8252
Subject:
absorption,   etc   ; corrosion; pollution;     Show all 3 Subjects
Abstract:
... Efficient and stable electromagnetic-wave (EMW) absorption materials have attracted great attention in the field of reducing microwave pollution. Herein, FeCoNiCuTiₓ high-entropy alloys (HEAs) as electromagnetic-wave absorbing materials were prepared by a high-energy ball-milling method. The as-milled HEA powders presented a flaky shape with a high aspect ratio. Impedance matching was efficiently ...
DOI:
10.1021/acsami.1c25079

20. High-Performance and Broadband Flexible Photodetectors Employing Multicomponent Alloyed 1D CdSₓSe₁–ₓ Micro-Nanostructures

Author:
Muhammad Zubair Nawaz; Liu Xu; Xin Zhou; Jiaping Li; Khizar Hussain Shah; Jiale Wang; Binhe Wu; Chunrui Wang
Source:
ACS applied materials & interfaces 2022 v.14 no.17 pp. 19659-19671
ISSN:
1944-8252
Subject:
absorption,   etc   ; color; vapors;     Show all 3 Subjects
Abstract:
... Low-cost multicomponent alloyed one-dimensional (1D) semiconductors exhibit broadband absorption from the ultraviolet to the near-infrared regime, which has attracted a great deal of interest in high-performance flexible optoelectronic devices. Here, we report the facile one-step fabrication of high-performance broadband rigid and flexible photodevices based on multicomponent alloyed 1D cadmium–su ...
DOI:
10.1021/acsami.2c01002