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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

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Decarbonizing the Food System with Microbes and Carbon-Neutral Feedstocks

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Annual Review of Food Science and Technology 2025年第1期16卷 81-104页

作者： Mahmud, Niaz Taiwo, Kayode J. Usack, Joseph G. Sustainable Food Systems Engineering Group Department of Food Science and Technology University of Georgia AthensGA United States Food and Nutritional Sciences Program North Carolina A&T State University GreensboroNC United States New Materials Institute University of Georgia AthensGA United States Institute for Integrative and Precision Agriculture University of Georgia AthensGA United States

Harnessing CO2 and CO2-derived C1-C2 compounds for microbial food production can mitigate greenhouse gas emissions and boost sustainability within the food sector. These innovative technologies support carbon neutrality by generating nutrient-rich edible microbial biomass and biocompounds using autotrophic and heterotrophic microbes. However, qualifying microbial food viability and future impacts in the food sector remains challenging due to their diversity, technical complexity, socioeconomic forces, and incipient markets. This review provides an overview of microbial food systems and then delves into the technical interplay among feedstocks, microbes, carbon fixation platforms, bioreactor operations, and downstream processes. The review further explores developing markets for microbial food products, the industrial landscape, economic drivers, and emerging trends in next-generation food products. The analysis suggests a transformative shift in the food industry is underway, yet significant challenges persist, such as securing cost-effective feedstocks, improving downstream processing efficiency, and gaining consumer acceptance. These challenges require innovative solutions and collaborative efforts to ensure the future commercial success of microbial foods - doing so will create myriad opportunities to transform and decarbonize our food system. © 2025 by the author(s).

关键词： Feedstocks

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Unraveling the genomic and metabolic mechanisms of pyrene and phenanthrene degradation by Mycolicibacterium sp. SCSIO 43805: A high-Efficiency bacterium isolated from seagrass sediment

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International Biodeterioration and Biodegradation 2025年 202卷

作者： Ahmad, Manzoor Liang, Tongyin Zhang, Yuhang Wang, Youshao Gu, Jidong Cheng, Hao Masmoudi, Khaled Zhou, Weiguo Yang, Qingsong Huang, Xiaofang Dong, Junde Ling, Juan CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology Guangdong Provincial Key Laboratory of Applied Marine Biology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou511458 China Department of Integrative Agriculture College of Agriculture and Veterinary Medicine United Arab Emirates University P.O. Box Al Ain United Arab Emirates Tropical Marine Biological Research Station in Hainan Chinese Academy of Sciences Sanya572000 China CAS-HKUST Sanya Joint Laboratory of Marine Science Research Key Laboratory of Tropical Marine Biotechnology of Hainan Province Sanya Institute of Ocean Eco-Environmental Engineering SCSIO Sanya572000 China University of Chinese Academy of Sciences Beijing100049 China Environmental Science and Engineering Program Guangdong Technion - Israel Institute of Technology Guangdong Shantou515063 China

The ability of microorganisms to break down persistent organic pollutants in the environment has sparked significant interest in bioremediation, as it provides a firm foundation for implementing an effective, robust, and eco-friendly approach. In this study, we isolated a bacterium, identified as Mycolicibacterium sp. SCSIO 43805, from seagrass sediments and studied its potential for degrading pyrene and phenanthrene. The stain effectively degraded pyrene and phenanthrene, both provided at a concentration of 50 mg/L, within 12 days of incubation, as evidenced by the absence of any noticeable peaks related to pyrene and phenanthrene in the GC-MS profile of the 12-day extract. Moreover, the whole genome sequence analysis unveiled a comprehensive array of genes crucial for the complete degradation of polycyclic aromatic hydrocarbons. Multiple copies of dioxygenases such as nidA, nidB and nidD and monooxygenase such as cytochrome P450, which are essential for initial cleavage of aromatic rings, were detected in the genome of the Mycolicibacterium sp. SCSIO 43805. Furthermore, based on the gene contents and metabolic profiling of the extracts, we speculated that Mycolicibacterium sp. SCSIO 43805 could degrade pyrene, phenanthrene and other PAHs via phthalate and β-Ketoadipate pathway. The comparative genomics with other member of the genus Mycolicibacterium showed that Mycolicibacterium sp. SCSIO 43805 possessed a maximum number of genes involved in polycyclic aromatic hydrocarbon degradation. Hence, based on results of genomic, comparative genomics and metabolic profiling, Mycolicibacterium sp. SCSIO 43805 demonstrated high ability in degrading persistent organic pollutants and is an excellent biological agent for bioremediation of contaminated environment. © 2025 Elsevier Ltd

关键词： Aromatization

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Motor Clustering Enhances Kinesin-driven Vesicle Transport

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Biophysical journal 2025年

作者： Rui Jiang Qingzhou Feng Daguan Nong You Jung Kang David Sept William O Hancock Intercollege Program in Integrative and Biomedical Physiology Pennsylvania State University University Park PA 16802 Department of Biomedical Engineering Pennsylvania State University University Park PA 16802. Molecular Cellular and Integrative Biomedical Sciences Program Pennsylvania State University University Park PA 16802. Department of Biomedical Engineering University of Michigan Ann Arbor MI 48109. Department of Biomedical Engineering Pennsylvania State University University Park PA 16802 Molecular Cellular and Integrative Biomedical Sciences Program Pennsylvania State University University Park PA 16802. Electronic address: woh1@psu.edu.

Intracellular vesicles are typically transported by a small number of kinesin and dynein motors. However, the slow microtubule binding rate of kinesin-1 observed in in vitro biophysical studies suggests that long-range transport may require a high number of motors. To address the discrepancy in motor requirements between in vivo and in vitro studies, we reconstituted motility of 120-nm-diameter liposomes driven by multiple GFP-labeled kinesin-1 motors. Consistent with predictions based on previous binding rate measurements, we found that long-distance transport requires a high number of kinesin-1 motors. We hypothesized that this discrepancy from in vivo observations may arise from differences in motor organization and tested whether motor clustering can enhance transport efficiency using a DNA scaffold. Clustering just three motors increased liposome travel distances across a wide range of motor numbers. Our findings demonstrate that, independent of motor number, the arrangement of motors on a vesicle regulates transport distance, suggesting that differences in motor organization may explain the disparity between in vivo and in vitro motor requirements for long-range transport.

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Preliminary feasibility of mindfulness in motion to improve physiological biomarkers of wellbeing in healthcare providers during dayshift hours

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Discover Public Health 2025年第1期22卷 1-11页

作者： Merrigan, Justin J. Klatt, Maryanna Quatman-Yates, Catherine Emerson, Angela Kronenberg, Jamie Orr, Morgan Caputo, Jacqueline Daniel, Kayla Duchemin, Anne-Marie Steinberg, Beth Hagen, Joshua A. Human Performance Collaborative Office of Research The Ohio State University Columbus USA Center for Integrative Health Department of Family and Community Medicine College of Medicine The Ohio State University Columbus USA Gabbe Health and Wellbeing The Ohio State University Wexner Medical Center The Ohio State University Columbus USA School of Health and Rehabilitation Sciences Division of Physical Therapy The Ohio State University Columbus USA Stress Trauma and Resilience Program Department of Psychiatry College of Medicine The Ohio State University Columbus USA Department of Integrated Systems Engineering The Ohio State University Columbus USA

Mindfulness in Motion (MIM) can improve stress, resiliency, and burnout in healthcare providers but physiological outcomes are unknown. Thus, this study evaluated the effects of MIM on respiration rate (RR), heart rate (HR), and heart rate variability (HRV). Nineteen healthcare providers wore chest strap electrocardiography (ECG) devices and remained still and seated while data were recorded for 5 min prior to (MIM-Start) and after completing (MIM-End) each of the 8 weekly MIM sessions. Metrics included: HR, RR, root-mean square of successive differences between R–R intervals (RMSSD), standard deviation of R–R intervals (SDNN), absolute low frequency power (LF), and absolute high frequency power (HF). At MIM-End, average SDNN (47.8 ± 26.6 vs. 38.2 ± 16.7 ms) and LF Power (2375 ± 3306 vs. 906 ± 1272 ms2) were greater and RR was slower (11.9 ± 3.0 v. 13.9 ± 3.0 bpm) than MIM-Start (p < 0.05). The Connor-Davidson Resilience Scale increased from Week-1 (27.7 ± 4.8) to Week-8 (31.5 ± 4.8, p < 0.001). Compared to Week-1, HR was slower and RMSSD was greater during weeks 2, 3, and 4. There were increases in SDNN and LF, as well as decreases in RR, HF Power, and LF/HF Ratio at MIM-Start for some later weeks compared to MIM-Start at Week-1 (p < 0.05). For healthcare workers in normal work hours, respiration rates were slower and HRV improved but HRV frequency metrics could suggest slight physiological arousal at the end of MIM sessions. These results should be taken with caution, but MIM improved physiological biomarkers of stress at the start of some of the 8 weekly sessions.

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Rapid recovery of an arctic lake ecosystem from a pulse disturbance caused by thermokarst failure

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Oecologia 2025年第6期207卷 1-16页

作者： Budy, Phaedra Pennock, Casey. A. Messenger, Sarah Pehrson, Hunter Adler, Emily Thiede, Gary P. Christman, Natasha R. Crump, Byron C. Giblin, Anne E. Kling, George W. U.S. Geological Survey Utah Cooperative Fish and Wildlife Research Unit Utah State University Logan USA Department of Watershed Sciences Utah State University Logan USA Department of Evolution Ecology and Organismal Biology and Aquatic Ecology Laboratory The Ohio State University Columbus USA The Ecosystems Center Marine Biological Laboratory Falmouth USA MIT-WHOI Joint Program in Oceanography and Applied Ocean Science and Engineering Department of Marine Chemistry and Geochemistry Woods Hole Oceanographic Institution Falmouth USA Department of Integrative Biology University of Wisconsin Madison USA College of Earth Ocean and Atmospheric Sciences Oregon State University Corvallis USA Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor USA

Due to rapid climate change, arctic ecosystems are experiencing an increase in disturbances including localized land-surface failures caused by melting ground ice (thermokarst failures). These failures result in the mass transport of sediment and organic materials into surface waters, with the potential to dramatically alter aquatic ecosystem function and biotic interactions. We coupled direct comparisons and long-term data of a suite of abiotic and biotic variables in a thermokarst-impacted lake and nearby reference lake to assess the impacts of thermokarst failure. After the thermokarst failure and relative to long-term averages, water transparency was substantially reduced. We hypothesized there would be subsequent changes to lower trophic levels and profound declines in fish foraging efficiency. However, these characteristics were within the range of natural variability and/or rapidly recovered to values within the range of long-term variability. In addition, although there was limited evidence of taxa-specific changes, we did not observe any strong changes in the total relative densities, growth rates, or composition of the bacterioplankton and zooplankton communities, benthic macroinvertebrates, or changes in fish diet, that could be attributed statistically to the thermokarst event. In sum, the thermokarst disturbance had substantial effects on water transparency and some lower trophic levels, which surprisingly were not manifested in higher trophic levels. Overall, the lake ecosystem appeared resistant to thermokarst disturbance with rapid recovery within two years after the disturbance.

关键词： Climate change Fish Microbe Warming Water quality Zooplankton

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A Self‑Powered Piezoelectric Nanofibrous Membrane as Wearable Tactile Sensor for Human Body Motion Monitoring and Recognition

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Advanced Fiber Materials 2023年第4期5卷 1417-1430页

作者： Jingcheng Li Jing Yin Mei Gui Vanessa Wee Amutha Chinnappan Seeram Ramakrishna Centre for Nanotechnology and Sustainability Department of Mechanical EngineeringNational University of SingaporeSingapore 117081Singapore National Engineering Laboratory for Modern Silk College of Textile and Clothing EngineeringSoochow UniversitySuzhouChina Integrative Sciences and Engineering Program NUS Graduate SchoolNational University of SingaporeSingapore 119077Singapore

Wearable sensors have drawn vast interest for their convenience to be worn on body to monitor and track body movements or exercise activities in real ***,wearable electronics rely on powering systems to ***,a self-powered,porous,flexible,hydrophobic and breathable nanofibrous membrane based on electrospun polyvinylidene fluoride(PVDF)nanofiber has been developed as a tactile sensor with low-cost and simple fabrication for human body motion detection and ***,effects of multi-walled carbon nanotubes(CNT)and barium titanate(BTO)as additives to the fiber morphology as well as mechanical and dielectric properties of the piezoelectric nanofiber membrane were *** fabricated BTO@PVDF piezoelectric nanogenerator(PENG)exhibits the highβ-phase content and best overall electrical performances,thus selected for the flexible sensing device ***,the nanofibrous membrane demonstrated robust tactile sensing performance that the device exhibits durability over 12,000 loading test cycles,holds a fast response time of 82.7 ms,responds to a wide pressure range of 0-5 bar and shows a high relative sensitivity,especially in the small force range of 11.6 V/bar upon pressure applied perpendicular to the ***,when attached on human body,its unique fibrous and flexible structure offers the tactile sensor to present as a health care monitor in a self-powered manner by translating motions of different movements to electrical signals with various patterns or sequences.

关键词： Electrospinning Nanofiber Piezoelectric sensor PENG Wearable Self-powered device

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Ultralong thermally activated delayed fluorescence based on intermolecular charge transfer induced by isomer in carbazole derivative

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Aggregate 2024年第6期5卷 392-399页

作者： Junru Chen Xianhe Zhang Zongliang Xie Bin Liu Department of Chemical and Biomolecular Engineering National University of SingaporeSingaporeSingapore Integrative Sciences and Engineering Program NUS Graduate SchoolNational University of SingaporeSingaporeSingapore Institute for Functional Intelligent Materials National University of SingaporeSingaporeSingapore

Ultralong thermally activated delayed fluorescence(UTADF)materials play an important role in realizing time-dependent color-tunable *** typical carbazole(Cz)derivatives have been reported to exhibit UTADF ***,a 10-fold difference in TADF lifetime was found between commercial Cz derivatives and the corresponding lab-synthesized ones,which indicated that UTADF may not be derived from the single Cz derivatives as *** reveal the real mechanism,we synthesized three Cz derivatives and one isomer to form three host-guest pairs for optical *** photophysical properties revealed that UTADF originated from the intermolecular charge transfer between host and guest,while the ultralong organic phosphorescence was from the *** to the rich color variations in luminescence displayed by 4-(1H-benzo[f]indol-1-yl)−4′-(9H-carbazol-9-yl)-[1,1′-biphenyl]−3,3′-dicarbonitrile/4,4′-di(9H-carbazol-9-yl)-[1,1′-biphenyl]−3,3′-dicarbonitrile(CBP-2CN)at different delay times,it can be applied to realize multi-dimensional encryption in both delay time and luminescent color.

关键词： energy transfer intermolecular charge transfer ultralong organic phosphorescence ultralong thermally activated delayed fluorescence

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Mitochondrial homeostasis in Parkinson＇s disease-a triumvirate rule？

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Neural Regeneration Research 2017年第8期12卷 1270-1272页

作者： Chee-Hoe Ng Liting Hang Kah-Leong Lim National Neuroscience Institute Singapore Neuroscience & Behavioral Disorders Program Duke-NUSMedical School Singapore Department of Physiology National University of SingaporeSingapore NUS Graduate School for Integrative Sciences and Engineering Singapore

Mitochondrial dysfunction in Parkinson＇s disease：Mitochondria are the primary energy generator of the cell and they are important for cell survival and *** mitochondrial homeostasis is frequently reported in human d... 详细信息

关键词： PPAR PD cell PGC AMPK Mitochondrial homeostasis in Parkinson’s disease-a triumvirate rule

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Superabsorbent Ternary Composite Desiccants Towards Energy-Efficient Dehumidification in Cooling Systems 13

Superabsorbent Ternary Composite Desiccants Towards Energy-E...

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13th IEEE International Conference and Expositions on Electric and Power engineering, EPEi 2024

作者： Wee, Mei Gui Vanessa Chinnappan, Amutha Ramakrishna, Seeram National University of Singapore Integrative Sciences and Engineering Program NUS Graduate School Singapore Singapore National University of Singapore Centre for Nanotechnology and Sustainability Department of Mechanical Engineering College of Design and Engineering Singapore Singapore

ISBN: (纸本)9798350356199

Desiccant-coated heat exchangers (DCHEs) enable energy-efficient dehumidification, alleviating the overall heat load on vapor compression refrigeration systems. However, conventional desiccants have limited water uptake capacities and high regeneration temperature requirements. This work presents ternary composite desiccants comprising the metal-organic framework, MIL-101(Cr) (where MIL denotes Materials Institute Lavoisier), the superabsorbent polymer polyvinyl alcohol (PVA), and hygroscopic salts for enhanced moisture sorption. Gravimetric water sorption analyses revealed that desiccants containing lithium chloride (LiCl) attained water uptakes greater than their calcium chloride- and copper (II) sulfate-containing counterparts. Subsequent cyclic tests identified the optimal MIL-101(Cr)/PVA/LiCl composite that adsorbed and desorbed moisture readily. From its water sorption isotherm, the 3MIL-101(Cr)/1PVA/1 LiCl desiccant has a water uptake capacity of 2.49g {water} g desiccant-1 - nearly double that of MIL-101(Cr) and more than nine times that of silica gel. When coated onto a prototype heat exchanger, the 3MIL-101(Cr)/1PVA/1 LiCl composite demonstrated a gravimetric water uptake more than double that of the silica gel-coated control across three adsorption-desorption cycles. Moreover, low-grade waste heat of 50°C could partially regenerate these DCHEs, leaving behind residual moisture of less than 0.5g{water} gdesiccant-1. Consequently, the 3MIL-101(Cr)/1PVA/1LiCl-coated heat exchangers are effective dehumidifiers for addressing the latent heat load towards energy savings in cooling systems. © 2024 IEEE.

关键词： Silica gel

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