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1.
Environ Monit Assess ; 196(8): 736, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-39009747

RESUMEN

Global nuclear power is surging ahead in its quest for global carbon neutrality, eyeing an anticipated installed capacity of 436 GW for coastal nuclear power plants by 2040. As these plants operate, they emit substantial amounts of warm water into the ocean, known as thermal discharge, to regulate the temperature of their nuclear reactors. This discharge has the potential to elevate the temperature of the surrounding seawater, potentially influencing the marine ecosystem in the discharge vicinity. Therefore, our study area is on the Qinshan and Jinqimen Nuclear Power Plants in China, employing a blend of Landsat 8/9, and unmanned aerial vehicle (UAV) imagery to gather sea surface temperature (SST) data. In situ measurements validate the temperature data procured through remote sensing. Leveraging these SST observations alongside hydrodynamic and meteorological data from field measurements, we input them into the MIKE 3 model to prognosticate the three-dimensional (3D) spatial distribution and temperature elevation resulting from thermal discharge. The findings reveal that (1) satellite remote sensing can instantly acquire the horizontal distribution of thermal discharge, but with a spatial resolution much lower than that of UAV. The spatial resolution of UAV is higher, but the imaging efficiency of UAV is only 1/40,000 of that of satellite remote sensing. (2) Numerical simulation models can predict the 3D spatial distribution of thermal discharge. Although UAV and satellite remote sensing cannot directly obtain the 3D spatial distribution of thermal discharge, using remotely sensed SST as the temperature field input for the MIKE 3 model can reduce the quantity of measured temperature data and lower the cost of numerical simulation. (3) In the process of monitoring and predicting the thermal discharge of nuclear power plants, achieving an effective balance between monitoring accuracy and cost can be realized by comprehensively considering the advantages and costs of satellite, UAV, and numerical simulation technologies.


Asunto(s)
Monitoreo del Ambiente , Plantas de Energía Nuclear , Tecnología de Sensores Remotos , Monitoreo del Ambiente/métodos , China , Dispositivos Aéreos No Tripulados , Temperatura , Agua de Mar/química , Imágenes Satelitales
2.
Angew Chem Int Ed Engl ; 63(25): e202405427, 2024 Jun 17.
Artículo en Inglés | MEDLINE | ID: mdl-38603586

RESUMEN

Neutral aqueous organic redox flow batteries (AORFBs) hold the potential to facilitate the transition of renewable energy sources from auxiliary to primary energy, the commercial production of anolyte materials still suffers from insufficient performance of high-concentration and the high cost of the preparation problem. To overcome these challenges, this study provides a hydrothermal synthesis methodology and introduces the charged functional groups into hydrophobic naphthalene diimide cores, and prepares a series of high-performance naphthalene diimide anolytes. Under the synergistic effect of π-π stacking and H-bonding networks, the naphthalene diimide exhibits excellent structural stability and the highest water solubility (1.85 M for dex-NDI) reported to date. By employing the hydrothermal method, low-cost naphthalene diimides are successfully synthesized on a hundred-gram scale of $0.16 g-1 ($2.43 Ah-1), which is also the lowest price reported to date. The constructed full battery achieves a high electron concentration of 2.4 M, a high capacity of 54.4 Ah L-1, and a power density of 318 mW cm-2 with no significant capacity decay observed during long-duration cycling. These findings provide crucial support for the commercialization of AORFBs and pave the way for revolutionary developments in neutral AORFBs.

3.
Angew Chem Int Ed Engl ; 61(11): e202115298, 2022 03 07.
Artículo en Inglés | MEDLINE | ID: mdl-34982500

RESUMEN

Multifunctional solar energy conversion offers a feasible strategy to solve energy, environmental and water crises. Herein, a series of platinum(II)-tethered chalcogenoviologens (PtL+ -EV2+ , E=S, Se, Te) is reported, which integrate the functions of photosensitizer, electron mediator and catalyst. PtL+ -EV2+ (particularly for PtL+ -SeV2+ )-based one-component solar H2 production could be triggered not only by EDTA, but also by facultative anaerobic and aerobic bacteria relying on a simplified mechanism, along with efficient antibacterial activities. In addition, by using real pool water, PtL+ -SeV2+ achieved multiple functions, including H2 production, antibacterial action and acid removal, which supplied a new strategy to solve various problems in real life via a single system.


Asunto(s)
Antibacterianos/química , Calcógenos/química , Complejos de Coordinación/química , Fármacos Fotosensibilizantes/química , Platino (Metal)/química , Energía Solar , Antibacterianos/síntesis química , Antibacterianos/farmacología , Calcógenos/farmacología , Complejos de Coordinación/síntesis química , Complejos de Coordinación/farmacología , Escherichia coli/efectos de los fármacos , Hidrógeno/química , Pruebas de Sensibilidad Microbiana , Fármacos Fotosensibilizantes/síntesis química , Fármacos Fotosensibilizantes/farmacología , Platino (Metal)/farmacología , Staphylococcus aureus/efectos de los fármacos
4.
Mater Horiz ; 11(5): 1283-1293, 2024 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-38165892

RESUMEN

Naphthalene diimide derivatives show great potential for application in neutral aqueous organic redox flow batteries (AORFBs) due to their highly conjugated molecular structure and stable two-electron storage capacity. However, the two-electron redox process of naphthalene diimides typically occurs via two separate steps with the transfer of one electron per step ("two-step two-electron" transfer process), which leads to an inevitable loss of voltage and energy. Herein, we report a novel regional charge buffering strategy that utilizes the core-substituted electron-donating group to adjust the redox properties of naphthalene diimides, realizing two electron transfer via a single-step redox process ("one-step two-electron" transfer process). The symmetrical battery testing of NDI-DEtOH revealed exceptional intrinsic stability lasting for 11 days with a daily decay rate of only 0.11%. Meanwhile, AORFBs with NDI-DMe/FcNCl and NDI-DEtOH/FcNCl exhibited a remarkable 40% improvement in peak power density at 50% state of charge (SOC) in comparison to NDI/FcNCl-based AORFBs. In addition, the battery's energy efficiency has increased by 24%, resulting in much more stable output power and significantly improved energy efficiency. These results are of great significance to practical applications of AORFBs.

5.
ACS Appl Mater Interfaces ; 14(43): 48727-48733, 2022 Nov 02.
Artículo en Inglés | MEDLINE | ID: mdl-36257057

RESUMEN

A series of chalcogenophene viologens ([(NPr)2FV]Cl4, [(NPr)2TV]Cl4, and [(NPr)2SeV]Cl4) as anolytes for neutral aqueous organic redox flow batteries (AORFBs) via a combination of chalcogenophenes (furan, thiophene, and selenophene) and viologens are reported. The chalcogenophene viologens showed narrow HOMO-LUMO energy gap, high solubility, and stable electrochemical properties. Compared with the parent [(NPr)2V]Cl4, the introduction of π-conjugated chalcogenophene groups reduced the redox potential and enhanced the stability of their free radical state, which endowed the chalcogenophene viologens/FcNCl-based AORFBs with a higher theoretical battery voltage of 1.20 V and enhanced stability for one-electron storage. In particular, the [(NPr)2FV]Cl4/FcNCl-based AORFB exhibited excellent long-cycle stability for 3000 cycles with 0.0006% capacity decay per cycle for one-electron storage and 300 cycles with 0.06% capacity decay per cycle for two-electron storage at a charge voltage of 1.9 V (1.42 V theoretical battery voltage). This work provided a new strategy for regulating the voltage and improving the performance of neutral AORFBs.

6.
Zhonghua Xin Xue Guan Bing Za Zhi ; 37(1): 69-72, 2009 Jan.
Artículo en Zh | MEDLINE | ID: mdl-19671358

RESUMEN

OBJECTIVE: To investigate the anti-inflammatory effects on the vessel wall of rosuvastatin in apolipoprotein E-deficient mice. METHODS: Eight-week-old apolipoprotein E-deficient mice fed a normal chow diet were treated with vehicle or various doses of rosuvastatin (1, 5, or 20 mg/kg) by subcutaneous injection for 2 or 6 weeks prior to sacrifice. Endothelial adhesiveness for monocytes was determined by functional binding assay. The expressions of vascular cell adhesion molecule-1 and monocyte chemotactic protein-1 in the vessel wall were detected by quantitative real-time polymerase chain reaction. RESULTS: Endothelial adhesiveness for monocytes was significantly attenuated after 2 or 6 weeks treatments with 5 or 20 mg/kg rosuvastatin. Rosuvastatin also significantly reduced the expressions of vascular cell adhesion molecule-1 and monocyte chemotactic protein-1 in the vessel wall. CONCLUSION: The anti-inflammatory effects of suvastatin might be responsible for attenuating the pathogenesis of atherogenesis in apolipoprotein E-deficient mice.


Asunto(s)
Apolipoproteínas E/genética , Adhesión Celular/efectos de los fármacos , Fluorobencenos/farmacología , Monocitos/efectos de los fármacos , Pirimidinas/farmacología , Sulfonamidas/farmacología , Molécula 1 de Adhesión Celular Vascular/metabolismo , Animales , Endotelio Vascular/citología , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Monocitos/metabolismo , Rosuvastatina Cálcica
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