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Conversion of N-doped biochar from carotenoid-extracted Tetraselmis suecica and its application to produce supercapacitors

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Journal of Environmental Sciences 2025年第5期151卷 410-423页

作者： Se Hun lee Kang Hyun lee Sang-hwa lee Soo Kweon lee Ok Sung Jeon Young Pyo Jeon Dongpyo Hong Young Joon Yoo Sang Yoon Park Hah Young Yoo Advanced Institute of Convergence Technology(AICT) Seoul National UniversitySuwon 16229Republic of Korea Department of Biotechnology Sangmyung University20 Hongjimun 2-GilJongno-GuSeoul 03016Republic of Korea Department of Bio-Convergence Engineering Dongyang Mirae University445-8Gyeongin-roGuro-guSeoul 08221Republic of Korea Fermentation team Lotte R&D Center210 Magokjungang-RoGangseo-GuSeoul 07594Republic of Korea School of Electronic Engineering Kyonggi UniversityGyeonggi-do 16227Republic of Korea

microalgae are one of the promising feedstocks for biorefinery,contributing significantly to net-zero emissions through carbon capture and ***,the disposal of microalgal byproducts from the manufacturing process causes additional environmental pollution,thus,a new application strategy is *** this study,the Tetraselmis suecica byproduct from the carotenoid extraction process was carbonized and converted into *** converted biochar was proved to be nitrogen-doped biochar(NDB),up to 4.69%,with a specific surface area of 206.59m^(2)/g andwas used as an electrode for a *** NDB electrode(NDB-E)in half-cell showed a maximum specific capacitance of 191 F/*** a full-cell test,the NDB-E exhibited a high energy density of 7.396 Wh/kg and a high-power density of 18,100 W/kg,and maintained specific capacity of 95.5%after charge and discharge of 10,000 *** conclusion,our study demonstrated that the carotenoid-extracted microalgal byproducts are a useful resource for the supercapacitor *** approach is the first to convert *** into active materials for supercapacitors.

关键词： microalgae Tetraselmis suecica Carbonization N-doped biochar Supercapacitor

A multifunctional Hydrogel with multimodal Self-Powered Sensing Capability and Stable Direct Current Output for Outdoor Plant monitoring Systems

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Nano-micro Letters 2025年第4期17卷 1-24页

作者： Xinge Guo Luwei Wang Zhenyang Jin Chengkuo lee Department of Electrical&Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117576Singapore Center for Intelligent Sensors and mEmS(CISm) National University of Singapore5 Engineering Drive 1Singapore 117608Singapore NUS Graduate School-Integrative Sciences and Engineering Program(ISEP) National University of SingaporeSingapore 119077Singapore Research Center for Sustainable Urban Farming(SUrF) National University of SingaporeSingapore 117558Singapore

Smart farming with outdoor monitoring systems is critical to address food shortages and sustainability *** systems facilitate informed decisions that enhance efficiency in broader environmental *** outdoor systems equipped with energy harvesters and self-powered sensors often struggle with fluctuating energy sources,low durability under harsh conditions,non-transparent or non-biocompatible materials,and complex ***,a multifunctional hydrogel is developed,which can fulfill all the above requirements and build selfsustainable outdoor monitoring systems solely by *** can serve as a stable energy harvester that continuously generates direct current output with an average power density of 1.9 W m^(-3)for nearly 60 days of operation in normal environments(24℃,60%RH),with an energy density of around 1.36×10^(7)J m^(-3).It also shows good self-recoverability in severe environments(45℃,30%RH)in nearly 40 days of continuous ***,this hydrogel enables noninvasive and self-powered monitoring of leaf relative water content,providing critical data on evaluating plant health,previously obtainable only through invasive or high-power consumption *** potential extends to acting as other self-powered environmental *** multifunctional hydrogel enables self-sustainable outdoor systems with scalable and low-cost production,paving the way for future agriculture.

关键词： Self-powered sensor Hydrogel Energy harvester Outdoor farming Self-sustainable IoT

PGLYRP1 protein as a novel mediator of cellular dialogue in neuroinflammation

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Neural Regeneration Research 2025年第7期20卷 1993-1994页

作者： Anup Bhusal Won-Ha lee Kyoungho Suk Department of Pharmacology School of MedicineKyungpook National UniversityDaeguRepublic of Korea BK21 Plus KNU Biomedical Convergence Program Department of Biomedical ScienceSchool of MedicineKyungpook National UniversityDaeguRepublic of Korea School of Life Sciences BK21 plus KNU Creative BioResearch GroupKyungpook National UniversityDaeguRepublic of Korea Brain Science and Engineering Institute Kyungpook National UniversityDaeguRepublic of Korea

Neuroinflammation has been identified as a crucial element in several neurological disorders. Glial cells play a critical role in directing neuroinflammation, both in deleterious and beneficial ways.

关键词： inflammation considerably

Single-cell and spatial omics:exploring hypothalamic heterogeneity

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Neural Regeneration Research 2025年第6期20卷 1525-1540页

作者： muhammad Junaid Eun Jeong lee Su Bin Lim Department of Biochemistry&molecular Biology Ajou University School of MedicineSuwonSouth Korea Department of Biomedical Sciences Graduate School of Ajou UniversitySuwonSouth Korea Department of Brain Science Ajou University School of MedicineSuwonSouth Korea

Elucidating the complex dynamic cellular organization in the hypothalamus is critical for understanding its role in coordinating fundamental body functions. Over the past decade, single-cell and spatial omics technologies have significantly evolved, overcoming initial technical challenges in capturing and analyzing individual cells. These high-throughput omics technologies now offer a remarkable opportunity to comprehend the complex spatiotemporal patterns of transcriptional diversity and cell-type characteristics across the entire hypothalamus. Current single-cell and single-nucleus RNA sequencing methods comprehensively quantify gene expression by exploring distinct phenotypes across various subregions of the hypothalamus. However, single-cell/single-nucleus RNA sequencing requires isolating the cell/nuclei from the tissue, potentially resulting in the loss of spatial information concerning neuronal networks. Spatial transcriptomics methods, by bypassing the cell dissociation, can elucidate the intricate spatial organization of neural networks through their imaging and sequencing technologies. In this review, we highlight the applicative value of single-cell and spatial transcriptomics in exploring the complex molecular-genetic diversity of hypothalamic cell types, driven by recent high-throughput achievements.

关键词： cellular diversity hypothalamus multi-omics single-cell transcriptomics spatial transcriptomics

Unlocking Novel Functionality:Pseudocapacitive Sensing in mXene-Based Flexible Supercapacitors

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Nano-micro Letters 2025年第4期17卷 212-229页

作者： Eunji Kim Seongbeen Kim Hyeong min Jin Gyungtae Kim Hwi-Heon Ha Yunhui Choi Kyoungha min Su-Ho Cho Hee Han Chi Won Ahn Jaewoo Roh Il-Kwon Oh Jinwoo lee Yonghee lee Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea National Nano Fab Center(NNFC) 291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea Department of Organic materials Engineering Chungnam National University99 Daehak-RoYuseong-GuDaejeon 34134Republic of Korea Department of materials Science and Engineering Chungnam National University99 Daehak-RoYuseong-GuDaejeon 34134Republic of Korea Department of Nano&Advanced materials Science and Engineering Kyungpook National University2559Gyeongsang-DaeroSangju-SiGyeongsangbuk-Do 37224Republic of Korea Department of mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea

Extensively explored for their distinctive pseudocapacitance characteristics,mXenes,a distinguished group of 2D materials,have led to remarkable achievements,particularly in the realm of energy storage *** work presents an innovative Pseudocapacitive *** key lies in switching the energy storage kinetics from pseudocapacitor to electrical double layer capacitor by employing the change of local pH(-log[H^(+)])in mXene-based flexible supercapacitors during *** sensing is observed in acidic electrolyte but absent in neutral *** shearing during bending causes liquid-crystalline mXene sheets to increase in their degree of anisotropic *** blocking of H+mobility due to the higher diffusion barrier,local pH *** electrochemical energy storage kinetics transits from Faradaic chemical protonation(intercalation)to non-Faradaic physical *** utilize the phenomenon of capacitance change due to shifting energy storage kinetics for strain sensing *** developed highly sensitive Pseudocapacitive Sensors feature a remarkable gauge factor(GF)of approximately 1200,far surpassing conventional strain sensors(GF:~1 for dielectric-cap sensor).The introduction of the Pseudocapacitive Sensor represents a paradigm shift,expanding the application of pseudocapacitance from being solely confined to energy devices to the realm of multifunctional *** technological leap enriches our understanding of the pseudocapacitance mechanism of mXenes,and will drive innovation in cutting-edge technology areas,including advanced robotics,implantable biomedical devices,and health monitoring systems.

关键词： mXenes Supercapacitors Pseudocapacitive sensing Local pH Operando measurements

Ultra-processed food,obesity,and colon cancer:A systematic review and meta-analysis

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World Journal of Gastrointestinal Oncology 2025年第2期17卷 262-271页

作者： Justin Tin Henry lee Alfonso Gonzalez Trejo Kevin Tin Department of Gastroenterology Newtown GastroenterologyElmhurstNY 11373United States New York Institute of Technology Old WestburyNY 11568United States Carnegie mellon University PittsburghPA 15289United States National Autonomous University of mexico Mexico 04510Ciudad de MéxicoMexico

BACKGROUND Recently,there has been a significant increase in the consumption of ultraprocessed foods ***,the association between the consumption of ultra-processed food,obesity,and the prevalence of colon cancer remains *** To find out the association between the consumption of ultra-processed food,obesity,and the prevalence of colon *** A comprehensive systematic literature search of Pubmed,Scopus,Web of Science,and Google Scholar for grey literature was done for articles published before 8th march *** search was done to retrieve potential peer-reviewed articles that explored the association between the consumption of ultra-processed food,obesity,and the prevalence of colon *** Of the 246 potential articles assessed,17 met the inclusion ***-analysis results demonstrated that high consumption of ultra-processed food is associated with an increased risk of obesity[odds ratio(OR):1.65;95%CI:1.07-2.45;P0.05).CONCLUSION Consuming ultra-processed foods increases the risk of obesity and colon cancer.

关键词： Ultra-processed food Ultra-processed Obesity Colon cancer Colorectal cancer Diet Oxidative stress Preferred Reporting Items for Systematic Review and meta-Analysis Population,intervention,comparison,primary outcomes,study design

Ru/NimnB spherical cluster pillar for highly proficient green hydrogen electrocatalyst at high current density

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Journal of Energy Chemistry 2025年第1期100卷 397-408页

作者： md Ahasan Habib Shusen Lin mehedi Hasan Joni Sumiya Akter Dristy Rutuja mandavkar Jae-Hun Jeong Jihoon lee Department of Electronic Engineering College of Electronics and InformationKwangwoon UniversityNowon-guSeoul 01897Republic of Korea

Advanced OER/HER electrocatalytic alternatives are crucial for the wide adaptation of green hydrogen ***,Ru/NimnB spherical cluster pillar(SCP),denoted as Ru/NimnB,is synthesized using a combination of electro-deposition and hydrothermal *** investigation of Ru doping in the NimnB matrix revealed significant improvements in electrocatalytic *** Ru/NimnB SCPs demonstrate superior OER/HER activity with low overpotentials of 150 and 103 mV at 50mA/cm^(2)in 1 m KOH,making them highly competitive with state-of-the-art ***,the Ru/NimnB SCPs exhibit a low 2-E cell voltage of 2.80 V at ultra-high current density of 2,000 m A/cm^(2)in 1 m KOH,outperforming the standard benchmark electrodes of RuO_(2)||Pt/C,thereby positioning Ru/NimnB as one of the best bifunctional *** SCPs exhibit exceptional high-current characteristics,stability and corrosion resistance,as evidenced by continuous operation at 1,000 mA/cm^(2)high-current density for over 150 h in 6 m KOH at elevated temperatures under harsh industrial *** a small amount of Ru incorporation significantly enhances the electrocatalytic performances of NimnB,attributed to increased active sites and improved intrinsic properties such as conductivity,adsorption/desorption capability and reaction ***,Ru/NimnB SCPs present a promising bi-functional electrode concept for efficient green H_(2)production.

关键词： Advanced electrocatalyst High current Corrosion resistance Industrial requirement

Prominent cycling reversibility and kinetics enabled by CaTiO_(3) protective layer on Zn metal for aqueous Zn-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 245-258页

作者： Gaeun lee Yong Nam Ahn Seongjoon So Chanwoo Park Jong-Seong Bae Taehyun Park Il Tae Kim Jaehyun Hur School of Chemical Biologicaland Battery EngineeringGachon UniversitySeongnamGyeonggi 13120Republic of Korea Busan Center Korea Basic Science InstituteBusan 46742Republic of Korea

Aqueous Zn-ion batteries (AZIBs) have received considerable attention owing to their various advantages such as safety,low cost,simple battery assembly conditions,and high ionic ***,they still suffer from serious problems,including uncontrollable dendrite growth,corrosion,hydrogen evolution reaction (HER) from water decomposition,electrode passivation,and unexpected *** creation of a uniform artificial nanocrystal layer on the Zn anode surface is a promising strategy for resolving these ***,we propose the use of a perovskite CaTiO_(3)(CTO) protective layer on Zn(CTO@Zn) as a promising approach for improving the performance of *** CTO artificial layer provides an efficient pathway for Zn ion diffusion towards the Zn metal because of the high dielectric constant (εr=180) and ferroelectric characteristics that enable the alignment of dipole moments and redistribute the Zn^(2+)ions in the CTO *** avoiding the direct contact of the Zn anode with the electrolyte solution,the uneven dendrite growth,corrosion,parasitic side reactions,and HER are mitigated,while CTO retains its mechanical and chemical robustness during ***,CTO@Zn demonstrates an improved lifespan in a symmetric cell configuration compared with bare ***@Zn shows steady overpotential (~68 m V) for 1500 h at 1 mA cm^(-2)/0.5 mA h cm^(-2),excelling bare ***,when paired with the V_(2)O_(5)-C cathode,the CTO@Zn//V_(2)O_(5)-C full battery delivers 148.4 mA h g^(-1)(based on the mass of the cathode) after 300 *** study provides new insights into Zn metal anodes and the development of high-performance AZIBs.

关键词： CaTiO_(3) Artificial layer Dielectric constant Znmetal anode Zinc aqueous battery

RF characteristics of wireless capsule endoscopy in human body

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Journal of Central South University 2016年第5期23卷 1198-1207页

作者：王璟琛王炤 mark Leach lee Sanghyuk Eng gee Lim HUANG Yi Department of Electronic and Electrical Engineering Xi'an Jiaotong-Liverpool University Department of Electrical Engineering and Electronics The University of Liverpool

The wireless capsule endoscope,as a small electronic device,has conquered some limitations of traditional wired diagnosing tools,such as the uncomfortableness of the cables for the patient and the inability to examine the very convoluted small intestine ***,this technique is still encountering a lot of practical challenges and is looking for feasible *** work investigates the RF performance of the wireless capsule endoscope system by studying the electromagnetic(Em) wave propagation within the human body.A wireless capsule endoscopy transmission channel model is constructed to serve the purpose of investigating signal attenuations according to the relative position between the transmitter and the *** 300-500 mHz,the S_(21) results are regular and do not display any sudden changes,which allows a suitable expression to be derived for S_(21) in terms of frequency and *** results provide useful information for capsule localization.

关键词： wireless capsule endoscopy (WCE) electromagnetic wave propagation signal attenuations positioning transmission channel