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Nanoconfinement effect of nanoporous carbon electrodes for ionic liquid-based aluminum metal anode

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Journal of Energy Chemistry 2022年第11期31卷 121-127,I0005页

作者： Juhee Yoon Seongbak Moon son Ha Hyung-Kyu Lim Hyoung-Joon Jin Young Soo Yun Program in Environmental and Polymer Engineering Inha UniversityIncheon 22212South Korea Department of Polymer Science and Engineering Inha UniversityIncheon 22212South Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoul 02841South Korea Division of Chemical Engineering and Bioengineering Kangwon National UniversityGangwon-do 24341South Korea Department of Integrative Energy Engineering Korea UniversitySeoul 02841South Korea

Rechargeable aluminum batteries(RABs),which use earth-abundant and high-volumetric-capacity metal anodes(8040 m Ah cm-3),have great potential as next-generation power sources because they use cheaper resources to deliver higher energies,compared to current lithium ion ***,the mechanism of charge delivery in the newly developed,ionic liquid-based electrolytic system for RABs differs from that in conventional organic ***,targeted research efforts are required to address the large overpotentials and cycling decay encountered in the ionic liquid-based electrolytic *** this study,a nanoporous carbon(NPC)electrode with well-developed nanopores is used to develop a high-performance aluminum *** negatively charged nanopores can provide quenched dynamics of electrolyte molecules in the aluminum deposition process,resulting in an increased collision *** fast chemical equilibrium of anionic species induced by the facilitated anionic collisions leads to more favorable reduction reactions that form aluminum *** nanoconfinement effect causes separated nucleation and growth of aluminum nanoparticles in the multiple confined nanopores,leading to higher coulombic efficiencies and more stable cycling performance compared with macroporous carbon black and 2D stainless steel electrodes.

关键词： Nanoconfinement effect Nanoporous carbon Ionic liquid electrolyte Metal anode Aluminum batteries Multivalent batteries

The Effect of Sleep and Cognition Enhancement Multimodal Intervention for Mild Cognitive Impairment with Sleep Disturbance in the Community-Dwelling Elderly

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International Journal of Mental Health Promotion 2023年第11期25卷 1197-1208页

作者： Eun Kyoung Han Hae Kyoung son Department of Nursing Eulji UniversitySeongnam13135South Korea

Dementia prevalence has soared due to population aging. In Mild Cognitive Impairment (MCI) as a pre-dementia stage, sleepdisturbances have raised much interest as a factor in a bidirectional relationship with cognitive decline. Thus, this studydeveloped the Sleep and Cognition Enhancement Multimodal Intervention (SCEMI) based on Lazarus’ multimodal approachand conducted a randomized controlled experiment to investigate the effects of the novel program on sleep and cognition inMCI elderly. The participants were 55 MCI elderly with sleep disturbances at two dementia care centers located in S-city,Gyeonggi-do, South Korea (n = 25 in the experimental group and n = 30 in the control group). The study period was fromNovember 01 to December 27, 2022. The experimental group received 8 sessions of SCEMI, 60 min per session once a *** control group received general education and guidance using a simplified booklet on the sleep and cognitive *** data collection, a self-reported questionnaire was used to investigate sleep quality, presleep arousal, cognitive function,stress, and depression. The results showed that, compared to the control group, the experimental group had significantlyimproved across all variables: sleep quality (U = 109.50, p < 0.001), presleep arousal (U = 11.50, p < 0.001), cognitive function(U = 72.00, p < 0.001), stress (U = 139.00, p < 0.001), and depression (U = 231.50, p = 0.015). Thus, the SCEMI appears topositively affect symptomatic improvement and delays the progression to dementia as an integrated intervention to enhancesleep and cognition in community-dwelling MCI elderly with sleep disturbances.

关键词： Depression elderly mild cognitive impairment sleep disturbance stress

Investigating aldehyde and ketone compounds produced from indoor cooking emissions and assessing their health risk to human beings

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Journal of Environmental Sciences 2023年第5期127卷 389-398页

作者： Wei Zhang Zhe Bai Longbo Shi Jung Hyun son Ling Li Lina Wang Jianmin Chen Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3) Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China

Aldehyde and ketone compounds are ubiquitous in the air and prone to adverse effects on human *** emission is one of the major indoor *** to evaluate health risks associated with inhalation exposure to aldehyde and ketone compounds,13 carbonyl compounds(CCs)released from heating 5 edible oils,3 seasonings,and 2 dishes were investigated in a kitchen *** the scenarios of heating five types of oil,aldehydes accounted for 61.1%-78.0%of the total emission,mainly acetaldehyde,acrolein and ***,heating oil with added seasonings released greater concentrations of aldehyde and ketone *** concentration enhancement of larger molecular aldehydes was significantly *** emission factors of aldehyde and ketone compounds for cooking the dish of chili friedmeatweremuch greater compared to that of tomato fried ***,food materials also had a great impact on the aldehyde and ketone *** and acetaldehyde were the most abundant CCs in the *** concentrations ranged from 235.18 to 498.71μg/m^(3),which was about 100 times greater compared to the guidelines provided by Office of Environmental Health Hazard Assessment(OEHHA).The acetaldehyde inhalation for adultswas 856.83-1515.55μg and 56.23-192.79μg from exposure to chili fried meat and tomato fried eggs,*** exceeds the reference value of 90μg/day provided by *** findings of this study provided scientific evidences for the roles of cooking emissions on indoor air quality and human health.

关键词： Aldehyde and ketone Indoor cooking Emission factor Health risk

Microcystin accumulation and biochemical responses in the edible clam Corbicula leana P. exposed to cyanobacterial crude extract

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Journal of Environmental Sciences 2016年第6期28卷 120-130页

作者： Thanh-Luu Pham Kazuya Shimizu Ayako Kanazawa Yu Gao Thanh-son Dao Motoo Utsumi Graduate School of Life and Environmental Sciences University of Tsukuba 1-1-1 Tennodai Tsukuba Ibaraki 305-8572 Japan Faculty of Life Sciences Toyo University Ora-gun Gunma 374-0193 Japan College of Chemical and Environmental Engineering Shandong University of Science and Technology qingdao 266590 China Ho Chi Minh City University of Technology 268 Ly Thuon9 Kiet St. Dist. 10 Ho Chi Mirth City Viet Nam Vietnam Academy of Science and Technology （VAST) Institute of Tropical Biology 85 Tran Quoc Toan St. Dist. 3 Ho Chi Minh City Viet Nam

We investigated the accumulation and effects of cyanobacterial crude extract（CCE）containing microcystins（MCs） on the edible clam Corbicula leana P. Toxic effects were evaluated through the activity of antioxidant and detoxification enzymes： catalase（CAT）,superoxide dismutase（SOD）, and glutathione-S-transferases（GSTs） from gills, foot, mantle and remaining soft tissues. Clams were exposed to CCE containing 400 μg MC-LReq/L for10 days and were then kept in toxin-free water for 5 days. Clam accumulated MCs（up to 3.41 ± 0.63 μg/g dry weight（DW） of unbound MC and 0.31 ± 0.013 μg/g DW of covalently bound MC）. Detoxification and antioxidant enzymes in different organs responded differently to CCE during the experiment. The activity of SOD, CAT, and GST in the gills and mantle increased in MC-treated clams. In contrast, CAT and GST activity was significantly inhibited in the foot and mostly only slightly changed in the remaining tissues. The responses of biotransformation, antioxidant enzyme activity to CCE and the fast elimination of MCs during depuration help to explain how the clam can survive for long periods（over a week） during the decay of toxic cyanobacterial blooms in nature.

关键词： Bioaccumulation Cyanotoxins Covalently bound microcystins Aqueous extracts

EFFECT OF CEMENT FINENESS ON PROPERTIES OF CEMENTITIOUS MATERIALS CONTAINING HIGH RANGE WATER REDUCING ADMIXTURE

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Journal of Green Building 2017年第1期12卷 142-167页

作者： Ali Mardani-Aghabaglou Arif Emre son Burak Felekoglu Kambiz Ramyar Department of Civil Engineering Eng.FacultyUludağUniversityNilüfer-BursaTurkey Department of Civil Engineering Eng.FacultyEge UniversityBornova-IzmirTurkey Department of Civil Engineering Eng.FacultyDokuz Eylul UniversityBuca-IzmirTurkey

The effect of cement fineness on the fresh state and rheological properties as well as compressive strength of cementitious systems was investigated.A CEM I 42.5R portland cement containing 7.92%C_(3)A and sulfate resisting cement containing 3.58%C(3)A were *** cements were ground to 4 different Blaine finenesses,ranging from 2800 to 4500 cm^(2)/*** the absence of water-reducing admixture,the water requirement of mixtures increased with an increase in the cement ***,the fresh state properties of the mixtures were affected ***,surprisingly,a reverse behavior was observed in the mixtures containing water-reducing admixtures,that is,an increase of the cement fineness increased the effectiveness of the admixture;consequently,the fresh state properties of the mixtures were *** seems to have been caused from the higher adsorption of the admixture on finer cement grains than on the coarser ***,as expected,the strength of the mortar and concrete mixtures increased along with the increase in cement fineness and its C3A content.

关键词： cement-admixture compatibility fresh properties rheological parameters

Occurrence of microcystins in water,sediment,and aquatic animals in Dau Tieng Reservoir,Vietnam

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Journal of Oceanology and Limnology 2024年第6期42卷 1751-1763页

作者： Thanh Luu PHAM Manh Ha BUI Tan Duc NGUYEN Thanh son DAO Faculty of Environment and Labour Safety Ton Duc Thang UniversityHo Chi Minh City 700000Vietnam Faculty of Environment Saigon UniversityHo Chi Minh City 700000Vietnam Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention and Guangdong Provincial Key Laboratory of Marine BiotechnologyShantou UniversityShantou 515063China Faculty of Environment and Natural Resources Ho Chi Minh City University of Technology(HCMUT)Ho Chi Minh City 700000Vietnam Asian Center for Water Research(Centre Asiatique de Recherchesur l’Eau CARE)Ho Chi Minh City University of Technology(HCMUT)Vietnam National UniversityHo Chi Minh City 700000Vietnam

This study investigates the variations of microcystins(MCs)in water,cyanobacterial blooms,sediment,and aquatic organisms collected from the Dau Tieng Reservoir(DTR).*** liquid chromatography(HPLC)was employed to measure MC concentrations in various target *** indicate that Microcystis *** as the primary MC producer in the *** average concentrations of analyzed MCs in surface water ranged from 1.10 to 5.54μg/L,temporally and *** sediment,average concentrations varied from 0.15 to 1.13μg/g wet weight(WW)temporally and from 0.41 to 0.72μg/g WW *** were detected in different organs of fish species(Oreochromis *** Labiobarbus sp.)and in the entire soft tissues of bivalve(Corbicula sp.)and gastropod(Assiminea sp.).The highest observed MC concentration in July was 0.83±0.22μg/g WW in the intestines of fish Oreochromis *** presence of MCs in grass shrimp Palaemonetes *** observed solely in June,reaching a concentration of 0.28±0.19μg/g *** is the first report of MC accumulation in the grass shrimp Palaemonetes *** field *** the bivalve Corbicula sp.,the presence of analyzed MCs was consistent throughout the study period,except for March and September,with the highest concentrations in July at 0.77±0.1μg/g *** correlation analysis revealed significant positive correlations between MCs in water and sediment with MC concentrations in aquatic animals,indicating the potential transfer of MCs across different trophic *** estimated daily intake values for analyzed MCs indicate that fish collected from the DTR are considered safe for consumption,as long as only the edible organs,such as the muscle,are ***,bivalves or gastropods collected from the DTR are not safe for human *** study underscored the importance of monitoring MC accumulation in aquatic animals used as food to mitigate adverse effects on human health.

关键词： aquatic animal bioaccumulation cyanotoxin health risk toxic cyanobacteria

Risks of non-conservative design according to ASME B31.1 for high-temperature piping subjected to long-term operation in the creep range

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Nuclear Science and Techniques 2019年第5期30卷 59-69页

作者： Hyeong-Yeon Lee Seok-Kwon son Min-Gu Won Ji-Young Jeong Korea Atomic Energy Research Institute National Fusion Research Institute School of Mechanical Engineering Sungkyunkwan University

This study investigates the risks of non-conservative piping design according to ASME B31.1 for hightemperature piping subjected to long-term operation at high temperature in a creep regime based on a sensitivity analysis of the hold time. Design evaluations of hightemperature piping were conducted over a range of hold times in the creep regime according to ASME B31.1,which implicitly considers the creep effects, and the French high-temperature design code of the RCC-MRx, which explicitly considers the creep effects. Conservatisms were quantified among the codes in terms of the hold times. In the case of B31.1, the design evaluation results do not change depending on the hold time at high temperature,whereas in the case of RCC-MRx, they do. It was shown that the design limits of RCC-MRx were exceeded when the hold time exceeded certain values, whereas those of B31.1 were satisfied regardless of the hold times. Thus, the design evaluations according to B31.1 did not consistently yield conservative results and might lead to non-conservative results in the case of long-term operations in the creep range.

关键词： ASME B31.1 Creep Hold time Hightemperature piping RCC-MRx Sensitivity analysis

Glycan targeting nanoparticle for photodynamic immunotherapy of melanoma

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Acta Pharmaceutica Sinica B 2023年第5期13卷 1903-1918页

作者： Yonghyun Choi Wooic son Youngpin Han Jayoung Chae Chul-Su Yang Jonghoon Choi School of Integrative Engineering Chung-Ang UniversitySeoul 06974Republic of Korea Department of Molecular&Life Science Hanyang UniversityAnsan 15588Republic of Korea Center for Bionano Intelligence Education and Research Hanyang UniversityAnsan 15588Republic of Korea

Interaction between tumour cells and macrophages enables cancer cells to evade immune detection and clearance by interfering with macrophage *** anti-phagocytic signals regulated by anti-phagocytic proteins are termed"don't eat me"signals;these signals include sialic acidbinding immunoglobulin-type lectin-10(Siglec-10)and the recently revealed CD24 immune checkpoint(ICP).In this study,we demonstrate that targeting a specific glycan on CD24 exhibits the potential to inhibit *** nigra agglutinin(SNA),a sialic acid-binding lectin,was employed to block CD24 and to enhance phagocytosis in melanoma *** addition,we prepared SNA-conjugated hollow gold-iron oxide nanoparticles for photothermal therapy of *** findings show that the combination treatment of SNA-conjugated photothermal nanoparticles and near-infrared exposure successfully augments tumour cell phagocytosis both in vitro and in vivo models.

关键词： Immunotherapy Macrophages Phagocytosis Lectin Melanoma cancer Photothermal nanoparticles Immune checkpoint Glycan

Enhanced Efficiently Using Ultra-Dense Network Resources in 5G System through Optimization of Paging Message

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Enhanced Efficiently Using Ultra-Dense Network Resources in ...

作者： Nguyen Van son（阮文山）北京邮电大学

学位级别：硕士

The continuous development of technology eras in general and generations of telecommunications networks,in particular,has been realizing dreams and promises to bring a whole new face to human *** story of 5G is not out of that common *** recent years,with the increasing popularity of smart devices,our daily lives have been revolving around mobile Internet *** future of 5G will be the explosion of data traffic on mobile communication *** will be difficult to meet the capacity requirements of 5G through increasing spectrum efficiency or using other spectrums as previous generations of networks *** concept of the Ultra-Dense Network(UDN)was born to meet usage scenarios in office buildings,apartments,stadiums,or subways,where there is a density of mobile devices *** UDN,the network infrastructure is designed towards users with densely deployed access points or base stations with narrower coverage,which improves system *** this also poses many challenges for the design of network architecture,mobility management,interference management,and especially the rational use of *** research directions are proposed to solve these new obstacles such as designing flexible self-organizing networks,building multi-layer backbone networks both wired and wireless,or combining multiple access techniques radio *** management is also reoriented,user-centric,integrating more software programming based on the development of the processing system in the core *** management of radio resources faces the complexity and density of the communication environment but still has to meet the requirements of skyrocketing *** spurs new research to save and optimize resource and energy *** mm Wave and beamforming were chosen as the foundation technology of 5G,especially suitable for UDN with its narrow coverage characteristics and high spectral efficiency,the concept of isotropic communication was also born due

关键词： Ultra-Dense Network (UDN) 5G Paging message User-centric