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Journal of Environmental Sciences 2022年第2期34卷 269-279页

作者： Yanhong Wang Xinyan Shi Xianxin Huang Chunlei Huang Helin Wang Hanqin Yin yixian shao Ping Li State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China Zhejiang Institute of Geological Survey Hangzhou 311203China

Selenium(Se)is an essential micronutrient for lives.Indigenous microbial communities play an important role on Se geochemistry in soils.In this study,the microbial community composition and functions of 53 soil samples were investigated using high-throughput sequencing.Samples were divided into 3 groups with different farming types based on the measured geochemical parameters and microbial functional structures.Results indicated that putative Se related bacteria Bacillus,Dyella,Paenibacillus,Burkholderia and Brevibacillus were dominant in dryland plantation soils which were characterized with higher available Se and low contents of H_(2)O,total organic carbon(TOC),NH_(4)^(+) and NO_(2)^(-).In contrast,the putative denitrifier Pseudomonas dominated in flooded paddy soils with higher TOC,NO_(3)^(-) and organic Se,whereas genera Rhizobium,Nitrosospira,and Geobacter preferred woodland soils with higher oxidation-reduction potential(ORP),pH,NH_(4)^(+) and Fe.Farming patterns resulted in distinct geochemical parameters including moisture,pH,ORP,TOC,and contents of soluble Fe,NO_(2)^(-) and NH_(4)^(+),shaping the microbial communities,which in turn affected Se forms in soils.This study provides a valuable insight into understanding of Se biogeochemistry in soils and prospective strategy for Se-rich agriculture production.

关键词： Selenium biogeochemistry Indigenous microbial community Farming patterns High-throughput sequencing FAPROTAX

A novel selenite-reducing bacterium Bacillus pseudomycoides SA14 isolated from Se-enriched soil and its potential Se biofortification on Brassica chinensis L.

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Journal of Earth Science 2022年

作者： Xianxin Huang Yanhong Wang Helin Wang Xinyan Shi Chunlei Huang Hanqin Yin yixian shao Ping Li State Key Laboratory of Biogeology and Environmental Geology， China University of Geosciences Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science， China University of Geosciences Zhejiang Institute of Geological Survey

Microbial participation in biofortification can improve the availability of selenium (Se) in soil and contribute to the enrichment of Se in crops. In this study， a selenite (Se(Ⅳ)) reducing strain was isolated from Se-rich soil， and its Se transformation and bioenhancement ability were studied. The strain was identified as Bacillus pseudomycoides and could reduce more than 93.48% of 1.0 mmol/L Se(Ⅳ) in 54 h. The results of scanning electron microscope (SEM) and energy dispersive X-ray spectrometry (EDS) showed that Se(Ⅳ) was reduced to Se(0)， and Se nanoparticles (SeNPs) were eventually formed. In pot experiments， B. pseudomycoides SA14 could promote the bioavailable Se in soils and the concentration of Se in Brassica chinensis L.. The concentrations of water-soluble Se， ion exchange Se and carbonate-binding Se in soil were increased by 23.13%， 22.05% and 30.89%， respectively. The Se concentration of Brassica chinensis L. in pot experiments was increased by 145.05%. The relative abundance of Bacillus in soil increased from 0.97% to 2.08% in the pot experiments. As far as we know， this is the first report of Se reduction by B. pseudomycoides. This study might provide a prospective strategy for microbial fortification of Se in crops.

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焦炉烟气脱硫脱硝运行探究

燃料与化工 2024年第3期55卷 56-58页

作者：邵仪先白新革沙钢集团焦化厂张家港215625

沙钢焦化厂6座6 m焦炉和2座7.63 m焦炉共配套有5座脱硫脱硝烟气净化装置,脱硫脱硝装置总体运行平稳。对沙钢焦化厂5座脱硫脱硝装置运行以来出现的问题进行阐述,并进行针对性处理,烟气实现达标排放,满足了超低排放要求。

关键词：焦炉烟气脱硫脱硝达标排放安全运行

The fate of eclogites in the lithosphere

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Science China Earth Sciences 2024年第3期67卷 879-884页

作者： Zhensheng WANG yixian XU State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province School of Earth SciencesZhejiang UniversityHangzhou 310058China

1. Eclogites and the concept of viscous drainage Eclogites are a distinctive rock type, mainly composed of garnet and omphacite and formed through ultra-high-pressure metamorphism, wherein oceanic or continental crust... 详细信息

关键词： crustal garnet rock

Electroacupuncture improves cognitive function in a rat model of mild traumatic brain injury by regulating the SIRT-1/PGC-1α/mitochondrial pathway

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Chinese Medical Journal 2024年第6期137卷 711-719页

作者： Bo Jin Yemei Gao yixian Fu Suxin Zhang Ke Zhang Yibing Su Department of Neurosurgery Beijing Jishuitan HospitalCapital Medical UniversityBeijing 100035China Department of Traditional Chinese Medicine Beijing Jishuitan HospitalCapital Medical UniversityBeijing 100035China School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China Department of Cardiology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Department of Breast Surgical Oncology National Cancer CenterNational Clinical Research Center for CancerCancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

Background:Mild traumatic brain injury(mTBI)is a common neurological trauma that can lead to cognitive impairment.The sirtuin-1(SIRT-1)/peroxisome proliferator-activated receptor gamma coactivator-1α(PGC-1α)pathway has been reported to have neuroprotective effects in rats with craniocerebral injury.We evaluated potential mechanisms underlying electroacupuncture-mediated recovery of cognitive function after mTBI,focusing on the SIRT-1/PGC-1α/mitochondrial pathway.Methods:We included forty 6-week-old male Sprague-Dawley rats in this study.Rats were randomly divided into four groups:controlled cortical impactor(CCI,n=10),sham operation(sham,n=10),electroacupuncture-treated CCI(CCI+EA,n=10),and electroacupuncture-treated sham(sham+EA,n=10)group.Randomization was performed by assigning a random number to each rat and using a random number table.The mTBI rat model was established using a controllable cortical impactor.Electroacupuncture therapy was performed on the back of rats,by inserting acupuncture needles to the specific acupoints and setting appropriate parameters for treatment.We evaluated spatial learning and memory functions with the Morris water maze test.We performed quantitative real-time polymerase chain reaction(qRT-PCR),western blotting,adenosine triphosphate(ATP)determination,and mitochondrial respiratory chain complex I(MRCC I)determination on rat hippocampal tissue.We analyzed SIRT-1/PGC-1α expression levels and the results of mitochondrial function assays,and compared differences between groups using bilateral Student’s t-tests.Results:Compared with the sham group,SIRT-1/PGC-1α expression was downregulated in the hippocampus of CCI group(P<0.01).Although this expression was upregulated following electroacupuncture,it did not reach the levels observed in the sham group(P<0.05).Compared with the sham group,MRCC I and ATP levels in the CCI group were significantly reduced,and increased after electroacupuncture(P<0.01).In the Morris water maze,electroacupuncture reduced the incubation period of rats and

关键词： Electroacupuncture Cognitive impairment Sirtuin-1 Mild traumatic brain injury SIRT-1/PGC-1α/mitochondrial pathway

Secure state estimation for cyber-physical systems with unknown input sliding mode observer

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Control Theory and Technology 2024年第2期22卷 244-253页

作者： Panpan Zhang Yuwei Ren yixian Fang Ang Liu School of Information Science and Engineering Shandong Normal UniversityJinan250358ShandongChina School of Information Engineering Shandong Management UniversityJinan250357ShandongChina

In recent years, cyber attacks have posed great challenges to the development of cyber-physical systems. It is of great significance to study secure state estimation methods to ensure the safe and stable operation of the system. This paper proposes a secure state estimation for multi-input and multi-output continuous-time linear cyber-physical systems with sparse actuator and sensor attacks. First, for sparse sensor attacks, we propose an adaptive switching mechanism to mitigate the impact of sparse sensor attacks by filtering out their attack modes. Second, an unknown input sliding mode observer is designed to not only observe the system states, sensor attack signals, and measurement noise present in the system but also counteract the effects of sparse actuator attacks through an unknown input matrix. Finally, for the design of an unknown input sliding mode state observer, the feasibility of the observing system is demonstrated by means of Lyapunov functions. Additionally, simulation experiments are conducted to show the effectiveness of this method.

关键词： Sparse attacks Cyber-physical systems Unknown input sliding mode Secure state estimation Adaptive switching mechanism

Slippery hydrogel with desiccation-tolerant‘skin’for high-precision additive manufacturing

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International Journal of Extreme Manufacturing 2024年第2期6卷 486-500页

作者： Desheng Liu Pan Jiang Yue Hu Yaozhong Lu yixian Wang Jiayu Wu Danli Hu Tao Wu Xiaolong Wang State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000People’s Republic of China CAS Key Laboratory of Chemistry of Northwestern Plant Resources Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000People’s Republic of China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai Zhongke Research Institute of Advanced Materials and Green Chemical EngineeringYantai 264006People’s Republic of China Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003People’s Republic of China

Hydrogels inevitably undergo dehydration,structural collapse,and shrinkage deformation due to the uninterrupted evaporation in the atmosphere,thereby losing their flexibility,slipperiness,and manufacturing precision.Here,we propose a novel bioinspired strategy to construct a spontaneously formed‘skin’on the slippery hydrogels by incorporating biological stress metabolites trehalose into the hydrogel network,which can generate robust hydrogen bonding interactions to restrain water evaporation.The contents of trehalose in hydrogel matrix can also regulate the desiccation-tolerance,mechanical properties,and lubricating performance of slippery hydrogels in a wide range.Combining vat photopolymerization three-dimensional printing and trehalose-modified slippery hydrogels enables to achieve the structural hydrogels with high resolution,shape fidelity,and sophisticated architectures,instead of structural collapse and shrinkage deformation caused by dehydration.And thus,this proposed functional hydrogel adapts to manufacture large-scale hydrogels with sophisticated architectures in a long-term process.As a proof-of-concept demonstration,a high-precision and sophisticated slippery hydrogel vascular phantom was easily fabricated to imitate guidewire intervention.Additionally,the proposed protocol is universally applicable to diverse types of hydrogel systems.This strategy opens up a versatile methodology to fabricate dry-resistant slippery hydrogel for functional structures and devices,expanding their high-precision processing and broad applications in the atmosphere.

关键词： slippery hydrogel trehalose desiccation tolerance vat photopolymerization 3D printing hydrogen bonding

Advances of embedded resistive random access memory in industrial manufacturing and its potential applications

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International Journal of Extreme Manufacturing 2024年第3期6卷 175-214页

作者： Zijian Wang yixian Song Guobin Zhang Qi Luo Kai Xu Dawei Gao Bin Yu Desmond Loke Shuai Zhong Yishu Zhang College of Integrated Circuits Zhejiang UniversityHangzhouZhejiang 3112000People’s Republic of China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 310027People’s Republic of China Department of Science Mathematics and TechnologySingapore University of Technology and DesignSingapore 487372Singapore Guangdong Institute of Intelligence Science and Technology HengqinZhuhai 519031People’s Republic of China

Embedded memory,which heavily relies on the manufacturing process,has been widely adopted in various industrial applications.As the field of embedded memory continues to evolve,innovative strategies are emerging to enhance performance.Among them,resistive random access memory(RRAM)has gained significant attention due to its numerousadvantages over traditional memory devices,including high speed(<1 ns),high density(4 F^(2)·n^(-1)),high scalability(~nm),and low power consumption(~pJ).This review focuses on the recent progress of embedded RRAM in industrial manufacturing and its potentialapplications.It provides a brief introduction to the concepts and advantages of RRAM,discusses the key factors that impact its industrial manufacturing,and presents the commercial progress driven by cutting-edge nanotechnology,which has been pursued by manysemiconductor giants.Additionally,it highlights the adoption of embedded RRAM in emerging applications within the realm of the Internet of Things and future intelligent computing,with a particular emphasis on its role in neuromorphic computing.Finally,the review discusses thecurrent challenges and provides insights into the prospects of embedded RRAM in the era of big data and artificial intelligence.

关键词： embedded resistive random access memory industrial manufacturing intelligent computing advanced process node

Multidimensional autophagy nano-regulator boosts Alzheimer's disease treatment by improving both extra/intraneuronal homeostasis

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1380-1399页

作者： yixian Li Peng Yang Ran Meng Shuting Xu Lingling Zhou Kang Qian Pengzhen Wang Yunlong Cheng Dongyu Sheng Minjun Xu Tianying Wang Jing Wu Jinxu Cao Qizhi Zhang Key Laboratory of Smart Drug Delivery Ministry of EducationSchool of PharmacyFudan UniversityShanghai 201203China

Intraneuronal dysproteostasis and extraneuronal microenvironmental abnormalities in Alzheimer’s disease(AD)collectively culminate in neuronal deterioration.In the context of AD,autophagy dysfunction,a multi-link obstacle involving autophagy downregulation and lysosome defects in neurons/microglia is highly implicated in intra/extraneuronal pathological processes.Therefore,multidimensional autophagy regulation strategies co-manipulating“autophagy induction”and“lysosome degradation”in dual targets(neuron and microglia)are more reliable for AD treatment.Accordingly,we designed an RP-1 peptide-modified reactive oxygen species(ROS)-responsive micelles(RT-NM)loading rapamycin or gypenoside XVII.Guided by RP-1 peptide,the ligand of receptor for advanced glycation end products(RAGE),RT-NM efficiently targeted neurons and microglia in AD-affected region.This nanocombination therapy activated the whole autophagy-lysosome pathway by autophagy induction(rapamycin)and lysosome improvement(gypenoside XVII),thus enhancing autophagic degradation of neurotoxic aggregates and inflammasomes,and promoting Aβ phagocytosis.Resultantly,it decreased aberrant protein burden,alleviated neuroinflammation,and eventually ameliorated memory defects in 3×Tg-AD transgenic mice.Our research developed a multidimensional autophagy nano-regulator to boost the efficacy of autophagy-centered AD therapy.

关键词： Autophagy-lysosome pathway Alzheimer’s disease Proteostasis Neuroinflammation Multi-target therapy Rapamycin Gypenoside XVII Cascade dual-targeting

Mechanochemical route to fabricate an efficient nitrate reduction electrocatalyst

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Nano Research 2024年第6期17卷 4889-4897页

作者： Yunliang Liu Zhiyu Zheng Sobia Jabeen Naiyun Liu yixian Liu Yuanyuan Cheng Yaxi Li Jingwen Yu Xin Wu Nina Yan Lei Xu Haitao Li Institute for Energy Research School of Energy and Power EngineeringJiangsu UniversityZhenjiang 212013China Jiangsu Engineering Technology Research Center of Biomass Composites and Addictive Manufacturing Institute of Agricultural Facilities and EquipmentJiangsu Academy of Agricultural SciencesNanjing 210014China Key Laboratory for Protected Agricultural Engineering in the Middle and Lower Reaches of Yangtze River Ministry of Agriculture and Rural AffairsNanjing 210014China

The electrochemical nitrate reduction reaction(NO_(3)RR)to ammonia under ambient conditions is a promising approach for addressing elevated nitrate levels in water bodies,but the progress of this reaction is impeded by the complex series of chemical reactions involving electron and proton transfer and competing hydrogen evolution reaction.Therefore,it becomes imperative to develop an electro-catalyst that exhibits exceptional efficiency and remarkable selectivity for ammonia synthesis while maintaining long-term stability.Herein the magnetic biochar(Fe-C)has been synthesized by a two-step mechanochemical route after a pyrolysis treatment(450,700,and 1000℃),which not only significantly decreases the particle size,but also exposes more oxygen-rich functional groups on the surface,promoting the adsorption of nitrate and water and accelerating electron transfer to convert it into ammonia.Results showed that the catalyst(Fe-C-700)has an impressive NH_(3)production rate of 3.5 mol·h^(−1)·gcat^(−1),high Faradaic efficiency of 88%,and current density of 0.37 A·cm^(−2)at 0.8 V vs.reversible hydrogen electrode(RHE).In-situ Fourier transform infrared spectroscopy(FTIR)is used to investigate the reaction intermediate and to monitor the reaction.The oxygen functionalities on the catalyst surface activate nitrate ions to form various intermediates(NO_(2),NO,NH_(2)OH,and NH_(2))and reduce the rate determining step energy barrier(*NO_(3)→*NO_(2)).This study presents a novel approach for the use of magnetic biochar as an electro-catalyst in NO_(3)RR and opens the road for solving environmental and energy challenges.

关键词： mechanochemical route magnetic biochar electron transfer nitrate ammonia