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内燃机工程 1987年第2期 6-15页

作者：崔可润吴锦翔桂经纬张敬国田学祥武汉水运工程学院

200GZC型四冲程高增压中速柴油机在单缸试验机上进行了系统的试验研究,取得较大幅度降低油耗率的成果。文中阐述了试验研究采取的步骤,措施及其效果。

关键词：节能燃油系统增压柴油机

A polygalacturonase gene OsPG1 modulates water homeostasis in rice

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The Crop Journal 2024年第1期12卷 79-91页

作者： Qinwen Zou Ranran Tu Jiajun wu Tingting Huang Zhihao Sun Zheyan Ruan Hongyu Cao Shihui Yang Xihong Shen Guanghua He Hong Wang Rice Research Institute Key Laboratory of Application and Safety Control of Genetically Modified CropsAcademy of Agricultural SciencesSouthwest UniversityChongqing 400715China State Key Laboratory of Rice Biology and Breeding Key Laboratory for Zhejiang Super Rice ResearchChina National Center for Rice ImprovementChina National Rice Research InstituteHangzhou 311401ZhejiangChina

A dynamic plant architecture is the basis of plant adaptation to changing *** many genes regulating leaf rolling have been identified,genes directly associated with water homeostasis are largely ***,we isolated a rice mutant,dynamic leaf rolling 1(dlr1),characterized by‘leaf unfolding in the morning-leaf rolling at noon-leaf unfolding in the evening’during a sunny *** content was decreased in rolled leaves and water sprayed on leaves caused reopening,indicating that in vivo water deficiency induced the leaf ***-based cloning and expression tests demonstrated that an A1400G single base mutation in Oryza sativa Polygalacturonase 1(OsPG1)/photo-SENSITIVE LEAF ROLLING 1(PSL1)was responsible for the dynamic leaf rolling phenotype in the dlr1 ***1 encodes a polygalacturonase,one of the main enzymes that degrade demethylesterified homogalacturonans in plant cell ***1 was constitutively expressed in various tissues and was enriched in *** of the OsPG1 gene exhibited defects in stomatal closure and decreased stomatal density,leading to reduced transpiration and excessive water loss under specific conditions,but had normal root *** analysis revealed that mutation of OsPG1 led to reduced pectinase activity in the leaves and increased demethylesterified homogalacturonans in guard *** findings reveal a mechanism by which OsPG1 modulates water homeostasis to control dynamic leaf rolling,providing insights for plants to adapt to environmental variation.

关键词： photosynthesis Stomata Transpiration Leaf rolling

Elimination of methicillin‑resistant Staphylococcus aureus biofilms on titanium implants via photothermally‑triggered nitric oxide and immunotherapy for enhanced osseointegration

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Military Medical Research 2024年第2期11卷 157-179页

作者： Yong‑Lin Yu Jun‑Jie wu Chuan‑Chuan Lin Xian Qin Franklin R.Tay Li Miao Bai‑Long Tao Yang Jiao Department of Pathology Affiliated Hospital of Zunyi Medical UniversityZunyi 563003GuizhouChina Laboratory Research Center the First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Blood Transfusion Laboratory of Radiation Biologythe Second Affiliated HospitalArmy Military Medical UniversityChongqing 400037China Department of Reproductive Endocrinology Chongqing Health Center for Women and ChildrenChongqing 401147China The Graduate School Augusta UniversityAugustaGA 30912USA Department of Stomatology the Seventh Medical Center of PLA General HospitalBeijing 100700China

Background:Treatment of methicillin-resistant Staphylococcus aureus(MRSA)biofilm infections in implant placement surgery is limited by the lack of antimicrobial activity of titanium(Ti)*** is a need to explore more effective approaches for the treatment of MRSA biofilm ***:Herein,an interfacial functionalization strategy is proposed by the integration of mesoporous polydopamine nanoparticles(PDA),nitric oxide(NO)release donor sodium nitroprusside(SNP)and osteogenic growth peptide(OGP)onto Ti implants,denoted as Ti-PDA@*** physical and chemical properties of Ti-PDA@SNP-OGP were assessed by scanning electron microscopy,X-ray photoelectron spectroscope,water contact angle,photothermal property and NO release *** synergistic antibacterial effect and elimination of the MRSA biofilms were evaluated by 2′,7′-dichlorofluorescein diacetate probe,1-N-phenylnaphthylamine assay,adenosine triphosphate intensity,O-nitrophenyl-β-D-galactopyranoside hydrolysis activity,bicinchoninic acid *** staining,assays for alkaline phosphatase activity,collagen secretion and extracellular matrix mineralization,quantitative real‑time reverse transcription‑polymerase chain reaction,and enzyme-linked immunosorbent assay(ELISA)were used to evaluate the inflammatory response and osteogenic ability in bone marrow stromal cells(MSCs),RAW264.7 cells and their co-culture *** staining,ELISA,micro-CT,hematoxylin and eosin,Masson's trichrome and immunohistochemistry staining were used to evaluate the eradication of MRSA biofilms,inhibition of inflammatory response,and promotion of osseointegration of Ti-PDA@SNP-OGP in ***:Ti-PDA@SNP-OGP displayed a synergistic photothermal and NO-dependent antibacterial effect against MRSA following near-infrared light(NIR)irradiation,and effectively eliminated the formed MRSA biofilms by inducing reactive oxygen species(ROS)-mediated oxidative stress,destroying bacterial membrane integrity and

关键词： Polydopamine nanoparticles Methicillin-resistant Staphylococcus aureus Nitric oxide Osseointegration Osteo-immunomodulation photothermal effect Titanium implants

Microalgae-based drug delivery system for tumor microenvironment photo-modulating and synergistic chemo-photodynamic therapy of osteosarcoma

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Engineered Regeneration 2024年第2期5卷 199-209页

作者： Feng Liang Xueying An Ruoxi Wang Wenshu wu Lin Yang Yixin Zheng Qing Jiang Xingquan Xu Danni Zhong Min Zhou Eye Center The Second Affiliated HospitalZhejiang University School of MedicineHangzhou310000PR China Department of Orthopedics The First Affiliated HospitalZhejiang University School of MedicineHangzhou310000PR China State Key Laboratory of Pharmaceutical Biotechnology Division of Sports Medicine and Adult Reconstructive SurgeryDepartment of Orthopedic SurgeryNanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing210008PR China Zhejiang University-University of Edinburgh Institute(ZJU-UoE Institute) Zhejiang University School of MedicineZhejiang UniversityHaining314400PR China State Key Laboratory of Pharmaceutical Biotechnology Division of Sports Medicine and Adult Reconstructive SurgeryDepartment of Orthopedic SurgeryNanjing Drum Tower HospitalClinical College of Nanjing Medical UniversityNanjing210008PR China Institute of Translational Medicine Zhejiang UniversityHangzhou310029PR China Zhejiang University-Ordos City Etuoke Banner Joint Research Center Zhejiang UniversityHaining314400PR China

Osteosarcoma(OS)is one of the most common malignant tumors in children and young *** chemotherapy and other therapies are limited by low therapeutic efficiency,severe side effects and single therapeutic function,it is of high value to develop innovative therapies for precise and efficient treatment of ***,natural photo-synthetic microalgae(***,CV)were utilized as carriers for the chemotherapeutic agent doxorubicin(DOX)to create a multifunctional therapeutic platform(CV@DOX)for the photo-modulation of the tumor microenvi-ronment(TME)and synergistic chemo-photodynamic therapy of ***@DOX exhibited rapid drug release behavior in the acidic TME,improving the efficiency of chemotherapy against tumors and reducing side effects on other normal *** 650 nm laser irradiation,CV@DOX demonstrated the ability to effectively generate oxygen to alleviate tumor hypoxia and utilize the photosensitizing properties of chlorophyll in CV to produce an increased amount of reactive oxygen species(ROS),thereby enhancing photodynamic therapy(PDT).CV@DOX-mediated synergistic chemo-photodynamic therapy demonstrated efficacy in halting tumor progression in an orthotopic osteosarcoma mouse model by promoting tumor cell apoptosis,inhibiting tumor proliferation and ***,chlorophyll-assisted fluorescence imaging enabled monitoring of the distribution of CV@DOX in osteosarcoma after ***,CV@DOX did not cause significant hematological and tissue toxicity,and prevented DOX-induced cardiotoxicity,showing good in vivo ***,this work presents a novel TME-responsive and TME-modulating platform for imaging-guided multimodal osteosar-coma treatment.

关键词： Osteosarcoma Tumor hypoxia photodynamic Chemotherapy Synergistic therapy

High-Efficiency photo-Induced Charge Transfer for SERS Sensing in N-Doped 3D-Graphene on Si Heterojunction

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Energy & Environmental Materials 2024年第2期7卷 268-276页

作者： Guanglin Zhang Jie Sun Genwang Wei Shan Zhang Zhengyi He Huijuan wu Bingkun Wang Siwei Yang Guqiao Ding Zhiduo Liu Zhiwen Jin Caichao Ye Gang Wang Department of Microelectronic Science and Engineering School of Physical Science and TechnologyNingbo UniversityNingbo 315211China Department of Biochemistry and Molecular Biology School of Basic Medical SciencesShenzhen UniversityShenzhen 518071China Academy for Advanced Interdisciplinary Studies&Department of Materials Science and Engineering Guangdong Provincial Key Laboratory of Computational Science and Material DesignSouthern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China School of Physical Science and Technology&Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education Lanzhou UniversityLanzhou 730000China

Nitrogen-doped three-dimensional graphene(N-doped 3D-graphene)is a graphene derivative with excellent adsorption capacity,large specific surface area,high porosity,and optoelectronic ***,N-doped 3D-graphene/Si heterojunctions were grown in situ directly on silicon(Si)substrates via plasma-assisted chemical vapor deposition(PACVD),which is promising for surface-enhanced Raman scattering(SERS)substrates *** analyses of theoretical simulation,incorporating N atoms in 3D-graphene are beneficial to increase the electronic state density of the system and enhance the charge transfer between the substrate and the target *** enhancement of the optical and electric fields benefits from the stronger light-matter interaction improved by the natural nano-resonator structure of N-doped *** as-prepared SERS substrates based on N-doped 3D-graphene/Si heterojunctions achieve ultra-low detection for various molecules:10^(-8)M for methylene blue(MB)and 10^(-9)M for crystal violet(CRV)with rhodamine(R6G)of 10^(10)*** practical detected,10^(-8)M thiram was precisely detected in apple peel *** results indicate that N-doped 3D-graphene/Si heterojunctions based-SERS substrates have promising applications in low-concentration molecular detection and food safety.

关键词： charge transfer DFT simulation N-doped 3D-graphene SERS Thiram detection

Flexible bidirectional self-powered photodetector with significantly reduced volume and accelerated response speed based on hydrogel and lift-off GaN-based nanowires

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Fundamental Research 2024年第2期4卷 369-378页

作者： Min Jiang Yukun Zhao Penghui Zheng Jianya Zhang Wenxian Yang Min Zhou Yuanyuan wu Renjun Pei Shulong Lu Key Lab of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)Suzhou 215123China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Nanchang Research Institute Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesNanchang 330200China

Due to the wide range of potential applications for next-generation multi-functional devices,the flexible selfpowered photodetector(PD)with polarity-switchable behavior is essential but very challenging to be ***,a wearable bidirectional self-powered PD based on detached(Al,Ga)N and(In,Ga)N nanowires has been proposed and demonstrated *** from the photovoltage-competing dynamics across(Al,Ga)N and(In,Ga)N nanowire photoelectrodes,such PD can generate the positive(33.3 mA W−1)and negative(-0.019 mA W−1)photo-responsivity under ultraviolet(UV)and visible illumination,respectively,leading to the bidirectional photocurrent *** to the introduction of quasi solid-state hydrogel,the PD can work without the liquid-electrolyte,thus remarkably reducing the volume from about 482 cm3 to only 0.18 ***,the use of hydrogel is found to enhance response speed in the UV range by reducing the response time for more than 95%,which is mainly attributed to the increased open circuit potential and reduced ion transport *** the GaN connecting segment is pretty thin,the piezoelectric charges generated by stress are proposed to have only a limited effect on the photocurrent ***,both the stable on-off switching characteristics and photocurrent densities can still be achieved after being bent 400 *** an excellent flexibility,this work creates opportunities for technological applications of bidirectional photocurrent PDs in flexible optoelectronic devices,e.g.,wearable intelligent sensors.

关键词： Flexible photodetector Bidirectional photocurrent Lift-off GaN-based nanowires Hydrogel Self-powered device

Dual-Schottky-junctions coupling device based on ultra-longβ-Ga_(2)O_(3)single-crystal nanobelt and its photoelectric properties

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Journal of Semiconductors 2024年第5期45卷 90-98页

作者： Haifeng Chen Xiaocong Han Chenlu wu Zhanhang Liu Shaoqing Wang Xiangtai Liu Qin Lu Yifan Jia Zhan Wang Yunhe Guan Lijun Li Yue Hao Key Laboratory of Advanced Semiconductor Devices and Materials School of Electronic EngineeringXi’an University of Posts andT elecommunicationsXi’an 710121China State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology School of MicroelectronicsXidian UniversityXi'an 710071China

High qualityβ-Ga_(2)O_(3)single crystal nanobelts with length of 2−3 mm and width from tens of microns to 132μm were synthesized by carbothermal reduction *** on the grown nanobelt with the length of 600μm,the dual-Schottky-junctions coupling device(DSCD)was *** to the electrically floating Ga_(2)O_(3)nanobelt region coupling with the double Schottky-junctions,the current I_(S2)increases firstly and rapidly reaches into saturation as increase the voltage V_(S2).The saturation current is about 10 pA,which is two orders of magnitude lower than that of a single *** the case of solar-blind ultraviolet(UV)light irradiation,the photogenerated electrons further aggravate the coupling physical mechanism in device.I_(S2)increases as the intensity of UV light *** the UV light of 1820μW/cm^(2),I_(S2)quickly enters the saturation *** V_(S2)=10 V,photo-to-dark current ratio(PDCR)of the device reaches more than 104,the external quantum efficiency(EQE)is 1.6×10^(3)%,and the detectivity(D*)is 7.5×10^(12)*** addition,the device has a very short rise and decay times of 25−54 ms under different positive and negative *** shows unique electrical and optical control characteristics,which will open a new way for the application of nanobelt-based devices.

关键词： β-Ga_(2)O_(3)nanobelt carbothermal reduction UV light dual-Schottky coupling device

Boosting MA-based two-dimensional Ruddlesden-Popper perovskite solar cells by incorporating a binary spacer

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Journal of Energy Chemistry 2024年第8期95卷 348-356,I0008页

作者： Xue Dong Yinhao Tang Yiqun Li Xin Li Yuzhen Zhao Wenqi Song Fangmin Wang Shudong Xu Yipeng Zhou Chenxin Ran Zongcheng Miao Lin Song Zhongbin wu Xi’an Key Laboratory of Advanced photo-Electronics Materials and Energy Conversion Device Technological Institute of Materials&Energy Science(TIMES)Xijing UniversityXi’an 710123ShaanxiChina Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)Northwestern Polytechnical UniversityXi'an 710072ShaanxiChina School of Artificial Intelligence Optics and Electronics(iOPEN) Northwestern Polytechnical UniversityXi'an 710072ShaanxiChina

Two-dimensional Ruddlesden-Popper(2DRP)perovskite exhibits excellent stability in perovskite solar cells(PSCs)due to introducing hydrophobic long-chain organic ***,the poor charge transporting property of bulky organic cation spacers limits the performance of 2DRP *** by the Asite cation alloying strategy in 3D perovskites,2DRP perovskites with a binary spacer can promote charge transporting compared to the unary spacer ***,the superior MA-based 2DRP perovskite films with a binary spacer,including 3-guanidinopropanoic acid(GPA)and 4-fluorophenethylamine(FPEA)are *** films(GPA_(0.85)FPEA_(0.15))_(2)MA_(4)Pb_5I_(16)show good morphology,large grain size,decreased trap state density,and preferential orientation of the as-prepared ***,the present 2DRP-based PSC with the binary spacer achieves a remarkable efficiency of 18.37%with a V_(OC)of1.15 V,a J_(SC)of 20.13 mA cm^(-2),and an FF of 79.23%.To our knowledge,the PCE value should be the highest for binary spacer MA-based 2DRP(n≤5)PSCs to ***,owing to the hydrophobic fluorine group of FPEA and the enhanced interlayer interaction by FPEA,the unencapsulated 2DRP PSCs based on binary spacers exhibit much excellent humidity stability and thermal stability than the unary spacer counterparts.

关键词： Perovskite solar cells Two-dimensional Ruddlesden-Popper perovskite Binary spacers Stability

Low-coordination environment design of single Co atoms for efficient CO_(2) photoreduction

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Nano Research 2024年第5期17卷 3745-3751页

作者： Zhentao Ma Qingyu Wang Limin Liu Rong-Ao Zhang Qichen Liu Peigen Liu Lihui wu Chengyuan Liu Yu Bai Yida Zhang Haibin Pan Xusheng Zheng National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China College of Chemistry and Materials Science University of Science and Technology of ChinaHefei 230026China Experimental Center of Engineering and Material Science University of Science and Technology of ChinaHefei 230026China

photocatalytic carbon dioxide(CO_(2))to carbon monoxide(CO)offers a promising way for both alleviating the greenhouse effect and meeting the industrial ***,we constructed a Co single-atom catalyst with intentional low-coordination environment design on porous ZnO(denoted as Co1/ZnO).Impressively,Co1/ZnO exhibited a remarkable activity with a CO yield rate of 22.25 mmol·g^(-1)·h^(-1) and a selectivity of 80.2%for CO_(2) photoreduction reactions under visible *** incorporation of single Co atoms provided an additional photo-generated electron transfer channel,which suppressed the carrier recombination of ***,the unsaturated Co active sites were capable to adsorb CO_(2) molecule spontaneously,thus facilitating the activation of CO_(2) molecule during CO_(2) reduction course.

关键词： photocatalytic CO_(2)reduction single atoms low-coordination CO_(2)adsorption electron transfer

An overview of metal hydroxyfluoride-A novel semiconductor material

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ChemPhysMater

ChemPhysMater 2024年第2期3卷 125-142页

作者： Xingyu Yao Rutao Wang Jinbo Zhao Fei Liu Zhidong Jin Zhou Wang Fenglong Wang Jiurong Liu Lili wu Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJinan250061China School of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China

Semiconductors have been widely used in many high-tech fields such as photo-and electro-catalysis,ion bat-teries,and solar *** addition to the earliest discovered elemental and compound semiconductors,such as monocrystalline silicon and metal oxides,new types of compound semiconductors have been *** them,metal hydroxyfluorides(MOHF)are an emerging type of semiconductor that are easy to synthesize and ***,many of their properties and applications are not well ***,some MOHF materials,such as ZnOHF and CoOHF,have been sufficiently developed,and their applications have been extensively *** review focuses on a new compound semiconductor,MOHF,with ZnOHF and CoOHF as the *** a short introduction to their physical and chemical properties,their common applications are illustrated with several ***,other less-researched MOHF and MOHF-like materials,as well as their applications,are ***,the expectations and development directions of MOHFs are briefly summarized.

关键词： Metal hydroxyfluoride Semiconductor Functionalmaterials photocatalysts Electrochemistry