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1. Hybrid zeolite imidazolate framework derived N-implanted carbon polyhedrons with tunable heterogeneous interfaces for strong wideband microwave attenuation

Author:
Liu, Panbo; Gao, Sai; Huang, Wenhuan; Ren, Juan; Yu, Danyang; He, Wenjuan
Source:
Carbon 2020 v.159 pp. 83-93
ISSN:
0008-6223
Subject:
chemical composition,   etc   ; absorption; carbon; nanoparticles; pyrolysis; zeolites;     Show all 6 Subjects
Abstract:
... Rational manipulation of zeolite imidazolate framework derived carbon microwave absorbers is highly significant, but still remains a challenge. Herein, three kinds of multi-metallic doped N-implanted carbon polyhedrons (NCP), named Mo-NCP, W-NCP and MoW-NCP, with tailored composition and unique structure derived from the pyrolysis of hybrid zeolite imidazolate framework (HZIF) precursors have been ...
DOI:
10.1016/j.carbon.2019.12.021

2. Correction to: Development of methodology to generate, measure and characterize the chemical composition of oxidized mercury nanoparticles

Author:
Ghoshdastidar, Avik. J.; Ramamurthy, Janani; Morissette, Maxwell; Ariya, Parisa A.
Source:
Analytical and bioanalytical chemistry 2020 v.412 no.6 pp. 1467
ISSN:
1618-2642
Subject:
chemical composition,   etc   ; funding; mercury; nanoparticles; oxidation;     Show all 5 Subjects
Abstract:
... The authors would like to call the reader’s attention to the fact that, unfortunately, there was an unintentional oversight regarding the funding information in this manuscript; please find the correct information below. ...
DOI:
10.1007/s00216-020-02397-y

3. Threshold of toxicological concern (TTC) for botanicals - Concentration data analysis of potentially genotoxic constituents to substantiate and extend the TTC approach to botanicals

Author:
Mahony, Catherine; Bowtell, Phil; Huber, Melissa; Kosemund, Kirstin; Pfuhler, Stefan; Zhu, Tingting; Barlow, Susan; McMillan, Donna A.
Source:
Food and chemical toxicology 2020 v.138 pp. 111182
ISSN:
0278-6915
Subject:
chemical composition,   etc   ; Weibull statistics; data collection; databases; genotoxicity; mutagens;     Show all 6 Subjects
Abstract:
... This paper evaluates use of the Threshold of Toxicological Concern (TTC) approach to assess safety of botanical preparations that may contain potentially genotoxic constituents, based on estimation of the fraction that may be genotoxic. A database of 107 chemical constituents of botanicals was compiled and their potential for genotoxicity evaluated from published data. Forty-three constituents met ...
DOI:
10.1016/j.fct.2020.111182

4. Band Alignment as the Method for Modifying Electronic Structure of Metal−Organic Frameworks

Author:
Syzgantseva, Maria A.; Stepanov, Nikolay F.; Syzgantseva, Olga A.
Source:
ACS applied materials & interfaces 2020 v.12 no.15 pp. 17611-17619
ISSN:
1944-8252
Subject:
chemical composition,   etc   ; catalysts; coordination polymers; energy; ligands; redox reactions;     Show all 6 Subjects
Abstract:
... Electronic-level ordering in metal–organic frameworks (MOFs) is a route to modulate their electronic properties such as optical absorption, band alignment, work function, charge separation, charge carrier lifetimes, and ground- or excited-state conductivity. A systematic application of this approach requires the knowledge on how a MOF chemical composition affects its electronic structure. In this ...
DOI:
10.1021/acsami.0c02094

5. Dissociation Mechanisms of Dissolved Alkali Silicates in Sodium Hydroxide

Author:
Dupuis, Romain; Pellenq, Roland; Champenois, Jean-Baptiste; Poulesquen, Arnaud
Source:
Journal of physical chemistry 2020 v.124 no.15 pp. 8288-8294
ISSN:
1932-7455
Subject:
chemical composition,   etc   ; depolymerization; dissociation; physical chemistry; silicates; sodium hydroxide; solvents;     Show all 7 Subjects
Abstract:
... Recent accelerated simulations of the decondensation of silicates by sodium hydroxide open a window on understanding complex mechanisms of the depolymerization of silicate chains. Herein, complex mechanisms of decondensation that involve two water molecules (or OH– groups) are unveiled. The study of two different solutions, having the same chemical composition but in different concentration, help ...
DOI:
10.1021/acs.jpcc.0c01495

6. An inorganic molecule-induced electron transfer complex for highly efficient organic solar cells

Author:
Kang, Qian; Zu, Yunfei; Liao, Qing; Zheng, Zhong; Yao, Huifeng; Zhang, Shaoqing; He, Chang; Xu, Bowei; Hou, Jianhui
Source:
Journal of materials chemistry A 2020 v.8 no.11 pp. 5580-5586
ISSN:
2050-7496
Subject:
chemical composition,   etc   ; capacitance; electrodes; electron transfer; solar cells; solar energy;     Show all 6 Subjects
Abstract:
... Interfacial engineering of electrode modification has proved to be an effective approach for improving the power conversion efficiency (PCE) of organic solar cells (OSCs). However, compared to the advances in active layers, the study of interfacial modification is seriously lagging and the contribution of electrode modification to PCE enhancement is marginalized. Herein, we synthesized a series of ...
DOI:
10.1039/d0ta00999g

7. Potential valorisation of shredder fines: Towards integrated processes for material upgrading and resource recovery

Author:
Gunaratne, Tharaka; Krook, Joakim; Andersson, Hans; Eklund, Mats
Source:
Resources, conservation, and recycling 2020 v.154 pp. 104590
ISSN:
0921-3449
Subject:
chemical composition,   etc   ; aluminum; chlorine; copper; energy recovery; mercury;     Show all 6 Subjects
Abstract:
... The lack of process development based on a comprehensive understanding of the material characteristics and the marketability of recoverables is the primary reason why the valorisation of shredder fines has not been realised in practice. In response, a systematic approach was undertaken consisting of 1) strategic sampling and material characterisation, 2) establishing gate and regulatory requiremen ...
DOI:
10.1016/j.resconrec.2019.104590

8. Evaluation of the IMPROVE formulas based on Mie model in the calculation of particle scattering coefficient in an urban atmosphere

Author:
Tao, Jun; Zhang, Leiming; Wu, Yunfei; Zhang, Zhisheng
Source:
Atmospheric environment 2020 v.222 pp. 117116
ISSN:
1352-2310
Subject:
chemical composition,   etc   ; ammonium sulfate; chemical species; droplets; models; particulates; uncertainty;     Show all 7 Subjects
Abstract:
... To assess the uncertainties in particle scattering coefficient (bₛₚ) estimated from using the original and revised IMPROVE formulas, particle mass size distribution, bulk PM₂.₅ and PM₁₀ and their major chemical compositions, and bₛₚ under dry condition were synchronously measured in urban Guangzhou during 2015–2016. The estimated bₛₚ, mass concentrations (Cₘ), and mass scattering efficiencies (MSE ...
DOI:
10.1016/j.atmosenv.2019.117116

9. Erratic ions: self-assembly and coassembly of ions of nanometer size and of irregular structure

Author:
Matějíček, Pavel
Source:
Current opinion in colloid & interface science 2020 v.45 pp. 97-107
ISSN:
1359-0294
Subject:
chemical composition,   etc   ; ions; models; polymers; proteins; solutes; surfactants;     Show all 7 Subjects
Abstract:
... The solution behavior of some ions resembles that of surfactants. The aim of this review is to contextualize the behavior of ions with uneven structure and/or hydration shell, such as nanoions, intrinsically amphiphilic ions, and ions with irregular chemical composition. Hints regarding ionspecificity and other peculiar features of less conventional ions are discussed. Such ions can exhibit ion pa ...
DOI:
10.1016/j.cocis.2019.12.008

10. Correction: Seasonal variation in aerosol composition and concentration upon transport from the outdoor to indoor environment

Author:
Avery, Anita M.; Waring, Michael S.; DeCarlo, Peter F.
Source:
Environmental science 2020 v.22 no.1 pp. 227
ISSN:
2050-7895
Subject:
chemical composition,   etc   ; aerosols; indoor environmental quality; seasonal variation;     Show all 4 Subjects
Abstract:
... Correction for ‘Seasonal variation in aerosol composition and concentration upon transport from the outdoor to indoor environment’ by Anita M. Avery et al., Environ. Sci.: Processes Impacts, 2019, 21, 528–547. ...
DOI:
10.1039/c9em90055a

11. Changes in the nitrate concentration of spring water after the 2016 Kumamoto earthquake

Author:
Sato, Tsutomu; Takahashi, Hiroshi A.; Kawabata, Kuniyo; Takahashi, Masaaki; Inamura, Akihiko; Handa, Hiroko
Source:
Journal of hydrology 2020 v.580 pp. 124310
ISSN:
0022-1694
Subject:
chemical composition,   etc   ; aquifers; earthquakes; groundwater; hydrogen; nitrates; oxygen; rain; soil;     Show all 9 Subjects
Abstract:
... Quasi-periodic sampling and analysis of spring water were conducted at nine sites to investigate the effects of the 2016 Kumamoto earthquake on the major chemical composition, including hydrogen, and oxygen stable isotopic ratios, of spring waters. Transient increases in the concentrations of nitrate in spring waters were observed at seven sites in May 2016, one month after the earthquake. This wa ...
DOI:
10.1016/j.jhydrol.2019.124310

12. Parametric mapping of cellular morphology in plant tissue sections by gray level granulometry

Author:
Legland, David; Guillon, Fabienne; Devaux, Marie-Françoise
Source:
Plant methods 2020 v.16 no.1 pp. 63
ISSN:
1746-4811
Subject:
chemical composition,   etc   ; cell walls; histology; image analysis; mechanical properties; multivariate analysis; plant organs; plant tissues; texture;     Show all 9 Subjects
Abstract:
... BACKGROUND: The cellular morphology of plant organs is strongly related to other physical properties such as shape, size, growth, mechanical properties or chemical composition. Cell morphology often vary depending on the type of tissue, or on the distance to a specific tissue. A common challenge in quantitative plant histology is to quantify not only the cellular morphology, but also its variation ...
DOI:
10.1186/s13007-020-00603-7

13. Microalgae Nannochloropsis oceanica as a future new natural source of vitamin D3

Author:
Ljubic, Anita; Jacobsen, Charlotte; Holdt, Susan L.; Jakobsen, Jette
Source:
Food chemistry 2020 v.320 pp. 126627
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; Nannochloropsis; carotenoids; cholecalciferol; feeds; fish; food intake; microalgae; polyunsaturated fatty acids; zooplankton;     Show all 10 Subjects
Abstract:
... For the last two decades there has been a rise in awareness about the general low dietary intake of vitamin D₃. Fish have the highest natural content of vitamin D₃, which is suggested to originate from zooplankton and microalgae. However there are no studies reporting which microalgal species may be the source of vitamin D₃. In this study, four selected microalgal species were cultivated during ex ...
DOI:
10.1016/j.foodchem.2020.126627

14. Provenance and bioaccessibility of rare earth elements in atmospheric particles in areas impacted by the optoelectronic industry

Author:
Yan, Yu; Chi, Hai-feng; Liu, Jia-rong; Hu, Gong-ren; Yu, Rui-lian; Huang, Hua-bin; Lin, Cheng-qi
Source:
Environmental pollution 2020 v.263 pp. 114349
ISSN:
0269-7491
Subject:
chemical composition,   etc   ; bioactive properties; bioavailability; humans; industry; intestines; models; provenance; rare earth elements; recycling;     Show all 10 Subjects
Abstract:
... Rare earth elements (REEs) are widely used in optoelectronic industries, and they can be emitted into the environment and may induce biological effects. In this study, we investigated the provenance and bioaccessibility of REEs in atmospheric particles (APs) collected from areas impacted by the optoelectronic industry. The geoaccumulation index (Igₑₒ) values showed that Y, Eu, and Tb were much mor ...
DOI:
10.1016/j.envpol.2020.114349

15. Improvement in physicochemical properties of collagen casings by glutaraldehyde cross-linking and drying temperature regulating

Author:
Chen, Chi; Liu, Fei; Yu, Zhe; Ma, Yun; Goff, H. Douglas; Zhong, Fang
Source:
Food chemistry 2020 v.318 pp. 126404
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; boiling; collagen; crosslinking; drying; drying temperature; glutaraldehyde; heat; mechanical properties; shrinkage; thermal stability;     Show all 11 Subjects
Abstract:
... The physicochemical properties of collagen casings were successfully improved by glutaraldehyde (GA) cross-linking, where the properties could be further regulated by drying temperature. Transverse direction (TD) showed a lower heat shrinkage rate than that in machine direction (MD). GA cross-linking significantly improved the mechanical properties of films under wet and boiled state. The mechanic ...
DOI:
10.1016/j.foodchem.2020.126404

16. Spray coated superamphiphobic surface with hot water repellency and durable corrosion resistance

Author:
Zhang, Binbin; Xu, Weichen; Xia, Dahai; Huang, Yanliang; Zhao, Xia; Zhang, Jie
Source:
Colloids and surfaces 2020 v.596 pp. 124750
ISSN:
0927-7757
Subject:
chemical composition,   etc   ; corrosion; dielectric spectroscopy; hexadecane; nanoparticles; silica; surface tension; water;     Show all 8 Subjects
Abstract:
... Superamphiphobic surfaces with low sliding angles, hot water repellency and multi-functionalities are attractive in academic and industrial fields but very challenging to construct. Herein, we present a facile spray-coated polyperfluoroalkylsilane/SiO₂ nanoparticles (fluoroPOS/SiO₂ NPs) surface featuring excellent static and dynamic superamphiphobicity towards various liquids including cold water, ...
DOI:
10.1016/j.colsurfa.2020.124750

17. A review of public and environmental consequences of organic germanium

Author:
Zheng, Jiangfu; Yang, Lihua; Deng, Yaocheng; Zhang, Chenyu; Zhang, Yang; Xiong, Sheng; Ding, Chunxia; Zhao, Jia; Liao, Chanjuan; Gong, Daoxin
Source:
Critical reviews in environmental science and technology 2020 v.50 no.13 pp. 1384-1409
ISSN:
1547-6537
Subject:
chemical composition,   etc   ; cadmium; germanium; human health; lead; mercury; oxidation; physicochemical properties; pollution control; toxicity;     Show all 10 Subjects
Abstract:
... Germanium (Ge) is a widely distributed but rare element on earth. Organic germanium is the most widely used form of germanium. Compared to the common metal (mercury, cadmium, lead, etc.), organic germanium is much less toxic to humans than others. Since its discovery in 1886, organic germanium and relative compounds have caused many medically related problems across the globe. In most cases, organ ...
DOI:
10.1080/10643389.2019.1661175

18. The postharvest ripening of strawberry fruits induced by abscisic acid and sucrose differs from their in vivo ripening

Author:
Siebeneichler, Tatiane Jéssica; Crizel, Rosane Lopes; Camozatto, Gustavo Henrique; Paim, Bruna Trindade; da Silva Messias, Rafael; Rombaldi, César Valmor; Galli, Vanessa
Source:
Food chemistry 2020 v.317 pp. 126407
ISSN:
0308-8146
Subject:
chemical composition,   etc   ; Fragaria ananassa; abscisic acid; firmness; fruits; mannitol; postharvest storage; ripening; storage time; strawberries; sucrose;     Show all 11 Subjects
Abstract:
... In this study, we compared the chemical composition of strawberry (Fragaria × ananassa) fruits that were ripened in vivo (attached to plant) to those ripened during postharvest storage. The effects of the application of abscisic acid (ABA) and sucrose on the postharvest ripening were also evaluated. The results suggested that the postharvest ripening process was dependent on the signal triggered b ...
DOI:
10.1016/j.foodchem.2020.126407

19. Predicting cloud condensation nuclei number concentration based on conventional measurements of aerosol properties in the North China Plain

Author:
Zhang, Yanyan; Tao, Jiangchuan; Ma, Nan; Kuang, Ye; Wang, Zhibin; Cheng, Peng; Xu, Wanyun; Yang, Wenda; Zhang, Shaobin; Xiong, Chun; Dong, Wenlin; Xie, Linhong; Sun, Yele; Fu, Pingqing; Zhou, Guangsheng; Cheng, Yafang; Su, Hang
Source:
The Science of the total environment 2020 v.719 pp. 137473
ISSN:
0048-9697
Subject:
chemical composition,   etc   ; aerosols; climate; data collection; droplets; observational studies; optical properties; pollution; prediction; winter; China;     Show all 11 Subjects
Abstract:
... Cloud condensation nuclei (CCN) play an important role in the formation and evolution of cloud droplets. However, the dataset of global CCN number concentration (NCCN) is still scarce due to the lack of direct CCN measurements, hindering an accurate evaluation of its climate effects. Alternative approaches to determine NCCN have thus been proposed to calculate NCCN based on measurements of other a ...
DOI:
10.1016/j.scitotenv.2020.137473

20. Aerosol hygroscopicity: Hygroscopic growth proxy based on visibility for low-cost PM monitoring

Author:
Molnár, Agnes; Imre, Kornelia; Ferenczi, Zita; Kiss, Gyula; Gelencsér, Andras
Source:
Atmospheric research 2020 v.236 pp. 104815
ISSN:
0169-8095
Subject:
chemical composition,   etc   ; aerosols; air quality; gravimetry; hygroscopicity; models; monitoring; particulates; water vapor;     Show all 9 Subjects
Abstract:
... Visibility is a simple indicator of air quality, and its drastic decrease is often related to poor air quality resulting from an increase in aerosol (particulate matter PM) concentration. Visibility is also related to water vapor due to the hygroscopicity of aerosols. As a result, water vapor may considerably influence PM measurements especially in the case of low-cost PM sensors which typically m ...
DOI:
10.1016/j.atmosres.2019.104815