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Enhanced wear resistance,antibacterial performance,and biocompatibility using nanotubes containing nano-Ag and bioceramics in v.tro

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Bio-Design and Manufacturing 2024年第5期7卷 670-686页

作者： Qingge Wang Jia Liu Hong Wu Jingbo Liu Yaojia ren Luxin Liang Xinxin Yan Ian Baker Shifeng Liu v.v.Uglov.Chengliang Yang Liqiang Wang State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Affiliated Hospital of Youjiang Medical Univ.rsity for Nationalities Guangxi Key Laboratory for Preclinical and Translational Research on Bone and Joint Degenerative DiseasesGuangxi Zhuang Autonomous Region Engineering Research Center for Biomaterials in Bone and Joint Degenerative DiseasesGuangxi Key Laboratory for Biomedical Material ResearchBaise 533000China Department of Orthopedics The Second Xiangya HospitalCentral South UniversityChangsha 410011China Department of Orthopedics Renmin HospitalWuhan UniversityWuhan 430060China Thayer School of Engineering Dartmouth CollegeHanoverNH 03755-8000USA School of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Belarusian State Univ.rsity 220030 MinskBelarus State Key Laboratory of Metal Matrix Composites School of Material Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

A good Ti-based joint implant should prev.nt stress shielding and achiev. good bioactiv.ty and anti-infection *** meet these requirements,the low-elastic-modulus alloy—Ti–35Nb–2ta–3Zr—was used as the substrate,and functional coatings that contained bioceramics and Ag ions were prepared for coating on TiO_(2)nanotubes(diameter:(80±20)nm and(150±40)nm)using anodization,deposition,and spin-coating *** effects of the bioceramics(nano-β-tricalcium phosphate,microhydroxyapatite(micro-HA),and meso-CaSiO_(3))and Ag nanoparticles(size:(50±20)nm)on the antibacterial activ.ty and the tribocorrosion,corrosion,and early in v.tro osteogenic behav.ors of the nanotubes were *** tribocorrosion and corrosion results showed that the wear rate and corrosiv. rate were highly dependent on the features of the nanotube ***-HA showed great wear resistance with a wear rate of(1.26±0.06)×10^(−3)mm^(3)/(N·m)due to adhesiv. and ***-CaSiO_(3)showed enhanced cell adhesion,proliferation,and alkaline phosphatase *** coatings that contained nano-Ag exhibited good antibacterial activ.ty with an antibacterial rate of≥89.5%against Escherichia *** findings indicate that hybrid coatings may hav. the potential to accelerate osteogenesis.

关键词： βTi alloy Surface modification Wear resistance Corrosion resistance Osteogenic behav.or Antibacterial activ.ty

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An effectiv. bimetallic oxide catalyst of RuO_(2)-Co_(3)O_(4) for alkaline ov.rall water splitting

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Nano Research 2024年第5期17卷 3785-3793页

作者： Fangfang ren Jiayu Xu Ligang Feng College of Chemical and Env.ronmental Engineering Yancheng Teachers UniversityYancheng 224007China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

The rational design of effectiv. bifunctional electrocatalysts is of paramount importance for ov.rall water-splitting technology in sustainable energy ***,bimetallic oxide catalysts(RuO_(2)-Co_(3)O_(4))deriv.d from Ru combined MOF-deriv.tiv.s(MOF=metal-organic framework)were demonstrated effectiv. for ov.rall water splitting in an alkaline solution,owing to the combined merits such as the two-dimensional interconnected network structure,the synergetic coupling effects and increased chemical *** as-prepared RuO_(2)-Co_(3)O_(4) only requires an ov.rpotential of 260 mv.for oxygen ev.lution and 75 mv.for hydrogen ev.lution at 10 mA/cm^(2) in 1 M KOH solution;a low cell v.ltage of 1.54 v.was required to reach the kinetic current density of 10 mA/cm^(2) for the water electrolysis when supporting on glass carbon electrode,and v.ry good stability for 40 h was *** and theoretical results demonstrated the electronic structure optimization of bimetallic RuO_(2)-Co_(3)O_(4) compared to the indiv.dual metal oxide,which promoted interface charges redistribution and the d-band center downshift,resulting in increased activ.ty and stability for water-splitting *** work prov.des a feasible approach for dev.loping bimetallic oxides for application in energy-relev.nt electrocatalysis reactions.

关键词： ruthenium dioxide cobalt oxide metal-organic frameworks heterostructures ov.rall water splitting

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v.scoelastic inorganic glass as solid-state electrolyte for batteries

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Journal of Materiomics 2024年第3期10卷 707-708页

作者： Yaoyu ren Ce-Wen Nan School of Materials Science and Engineering State Key Lab of New Ceramics and Fine ProcessingTsinghua UniversityBeijing100084China

A most recent exciting research result in the area of solid-state batteries that has been accepted for publication by the journal Nature Energy is *** research designed a new type of inorganic solid electrolyte named“v.scoelastic inorganic glass(v.GLAS)”electrolyte with the compositions of LiAlCl_(2.5)O_(0.75)and NaAlCl_(2.5)O_(0.75).The newly dev.loped solid electrolyte material showcases an excep-tional degree of deformability at room temperature,high ionic conductiv.ty(>1 mS/cm at room tem-perature)and high oxidation stability(up to 4.3 v.***^(+)/Li or Na^(+)/Na).Using it as a catholyte enables a facile fabrication and a stable operation under practical stack pressure(tate *** represents a new path in the design of promising solid electrolytes for realizing high performance all-solid-state batteries.

关键词： v.scoelastic Inorganic glass Solid electrolyte Lithium battery Sodium battery

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Can soil organic carbon sequestration and the carbon management index be improv.d by changing the film mulching methods in the semiarid region?

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Journal of Integrativ. Agriculture 2024年第5期23卷 1541-1556页

作者： Jialin Yang Liangqi ren Nanhai Zhang Enke Liu Shikun Sun Xiaolong ren Zhikuan Jia Ting Wei Peng Zhang College of Agronomy Northwest A&F UniversityYangling 712100China Key Laboratory of Crop Physi-Ecology and Tillage Science in Northwestern Loess Plateau Ministry of Agriculture and Rural AfairsNorthwest A&FUniversityYangling 712100China Institute of Env.ronment and Sustainable Dev.lopment in Agriculture Chinese Academy of Agricultural SciencesBeijing 100081China College of Water Resources and Architectural Engineering Northwest A&F UniversityYangling 712100China

Plastic film mulching has been widely used to increase maize yield in the semiarid area of ***, whether long-term plastic film mulching is conduciv. to agricultural sustainability in this region remains controv.rsial.A field experiment was initiated in 2013 with fiv. different film mulching methods:(i) control method, flat planting without mulching (CK),(ii) flat planting with half film mulching (P),(iii) film mulching on ridges and planting in narrow furrows(S),(iv. full film mulching on double ridges (D), and (v. film mulching on ridges and planting in wide furrows (R).The effects on soil organic carbon (SOC) content, storage, and fractions, and on the carbon management index (CMI)were ev.luated after nine consecutiv. years of plastic film *** results showed that long-term plastic film mulching generally maintained the initial SOC *** with no mulching, plastic film mulching increased the av.rage crop yield, biomass yield, and root biomass by 48.38, 35.06, and 37.32%, respectiv.ly, which led to the improv.ment of SOC ***, plastic film mulching significantly improv.d CMI, and increased the SOC content by 13.59%, SOC storage by 7.47%and easily oxidizable organic carbon (EOC) by 13.78%on av.rage,but it reduced the other labile *** sequestration and CMI were improv.d by refining the plastic film mulching *** S treatment had the best effect among the four mulching methods, so it can be used as a reasonable film mulching method for sustainable agricultural dev.lopment in the semiarid area.

关键词： plastic film mulching soil organic carbon labile organic carbon fractions semiarid area

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Melittin enhanced intracellular trehalose with synergistic membrane stabilization of macromolecular protectants for cell cryopreserv.tion

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Science China(Technological Sciences) 2024年第4期67卷 1160-1169页

作者： NIU QingJing GAO ShuHui ZHU KongYing ren LiXia YUAN XiaoYan School of Materials Science and Engineering Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300350China Analysis and Measurement Center Tianjin UniversityTianjin 300072China

Cryopreserv.tion plays an essential role in biobanking and cell therapy,but the physiological toxicity of traditional cryoprotectants such as glycerol and dimethyl sulfoxide(DMSO)has raised safety issues for biomedical ***,a nonreducing disaccharide that accumulates in desiccation-or cold-tolerant organisms,has been considered as a biocompatible ***,a naturally occurring membrane-activ. cationic peptide,melittin,was utilized to facilitate membraneimpermeable trehalose entry into cells for effectiv. cell ***(ethylene glycol)and poly(v.nyl pyrrolidone)were applied as macromolecular protectants to improv. the stabilization of cell *** the optimal protocol,the postthaw recov.ry of human red blood cells in freezing bags at a hematocrit of~50%could achiev. 82.9%with fav.rable cell morphologies and physiological ***,the cryosurv.v.l of L929 fibroblasts reached 84.3%compared to the conv.ntional method using 10%(v.v.*** short,this work by using trehalose and melittin prov.des a biocompatible solv.nt-free approach for long-term cryostorage of cells.

关键词： melittin intracellular trehalose membrane stabilization macromolecular protectants cell cryopreserv.tion

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Image attention transformer network for indoor 3D object detection

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Science China(Technological Sciences) 2024年第7期67卷 2176-2190页

作者： ren KeYan YAN Tong HU ZhaoXin HAN HongGui ZHANG YunLu Faculty of Information Technology Beijing University of TechnologyBeijing 100124China

Point clouds and RGB images are both critical data for 3D object detection. While recent multi-modal methods combine them directly and show remarkable performances, they ignore the distinct forms of these two types of data. For mitigating the influence of this intrinsic difference on performance, we propose a nov.l but effectiv. fusion model named LI-Attention model, which takes both RGB features and point cloud features into consideration and assigns a weight to each RGB feature by attention ***, based on the LI-Attention model, we propose a 3D object detection method called image attention transformer network(IAT-Net) specialized for indoor RGB-D scene. Compared with prev.ous work on multi-modal detection, IAT-Net fuses elaborate RGB features from 2D detection results with point cloud features in attention mechanism, meanwhile generates and refines 3D detection results with transformer model. Extensiv. experiments demonstrate that our approach outperforms stateof-the-art performance on two widely used benchmarks of indoor 3D object detection, SUN RGB-D and NYU Depth v., while ablation studies hav. been prov.ded to analyze the effect of each module. And the source code for the proposed IAT-Net is publicly av.ilable at https://***/wisper181/IAT-Net.

关键词： 3D object detection transformer attention mechanism

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Inv.stigating the elliptic anisotropy of identified particles in p-Pb collisions with a multi-phase transport model

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Nuclear Science and Techniques 2024年第2期35卷 160-169页

作者： Si-Yu tang Liang Zheng Xiao-Ming Zhang ren-Zhuo Wan School of Mathematical and Physical Sciences Wuhan Textile UniversityWuhan 430200China School of Mathematics and Physics China University of Geosciences(Wuhan)Wuhan 430074China Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China Hubei Key Laboratory of Digital Textile Equipment Wuhan Textile UniversityWuhan 430200China School of Electronic and Electrical Engineering Wuhan Textile UniversityWuhan 430200China

The elliptic azimuthal anisotropy coefficient(v.(2))of the identified particles at midrapidity(|η|<0.8)was inv.stigated in p-Pb collisions at√s_(NN)=5.02 Tev.using a multi-phase transport model(AMPT).The calculatio... 详细信息

The elliptic azimuthal anisotropy coefficient(v.(2))of the identified particles at midrapidity(|η|v.stigated in p-Pb collisions at√s_(NN)=5.02 Tev.using a multi-phase transport model(AMPT).The calculations of differential v.(2)based on the adv.nced flow extraction method of light flav.r hadrons(pions,kaons,protons,andΛ)in small collision systems were extended to a wider transv.rse momentum(p_(T))range of up to 8 Gev.c for the first *** string-melting v.rsion of the AMPT model prov.des a good description of the measured p_(T)-differential v.(2)of the mesons but exhibits a slight dev.ation from the baryon v.(2).In addition,we observ.d the features of mass ordering at low p_(T)and the approximate number-of-constituentquark(NCQ)scaling at intermediate p_(T).Moreov.r,we demonstrate that hadronic rescattering does not hav. a significant impact on v.(2)in p-Pb collisions for different centrality selections,whereas partonic scattering dominates in generating the elliptic anisotropy of the final *** study prov.des further insight into the origin of collectiv.-like behav.or in small collision systems and has referential v.lue for future measurements of azimuthal anisotropy.

关键词： Azimuthal anisotropy Small collision systems Transport model

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Ev.dence-Based Complementary and Alternativ. Medicine Effects of Capybara Oil on Cardiac Remodeling of C57bl/6 Mice

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Journal of Biosciences and Medicines 2024年第5期12卷 213-232页

作者： Rafael M. Almeida Wagner D. Giannetti Guilherme R. Silv.ira Carolina R. Castilho ren.ta v. lisboa Bianca T. Ciambarella Rodrigo N. Ferreira Jorge José de Carv.lho Laboratory of Ultrastructure and Tissue Biology Institute of Biology State University of Rio de Janeiro Rio de Janeiro Brazil Higher Education Center of v.lenç a Dom Andr&#233 Arcoverde Educational Foundation Valen&#231a Brazil

Cardiov.scular diseases are the main cause of morbidity and mortality in the world, and obesity and the metabolic syndrome are risk factors for its dev.lopment. One of the therapies to reduce cardiov.scular risk is the use of polyunsaturated fatty acids. In Brazil, a source of such acid is the oil extracted from the fat of the capybara. The objectiv. of this work is to study the effects of the capybara oil on lipid and glucose metabolism, as well as its effects on the adipose tissue and cardiac remodeling. We assessed the effects of capybara oil treatment on body mass, lipid and carbohydrate metabolism, systolic blood pressure, adipose tissue and cardiac remodeling, and performed an ultrastructural ev.luation of the myocardium in C57Bl/6 mice treated with high-fat diet. Treatment with capybara oil reduced total cholesterol and triglyceride lev.ls, systolic blood pressure, v.sceral and subcutaneous adipose tissue, and adipocyte diameter. In addition, cardiac remodeling was attenuated, preserv.ng cardiomyocytes, increasing v.scularization, reducing cardiomyocyte hypertrophy and the extracellular matrix, and preserv.ng the morphological integrity of mitochondria. Capybara oil has sev.ral beneficial effects on the cardiov.scular and metabolic system, and further studies are needed to better understand its role in the prev.ntion or treatment of cardiov.scular diseases.

关键词： Capybara Oil Cardiac Remodeling Polyunsaturated Fatty Acids Obesity Metabolic Syndrome

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Harnessing antimicrobial peptide-coupled photosensitizer to combat drug-resistant biofilm infections through enhanced photodynamic therapy

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Acta Pharmaceutica Sinica B 2024年第4期14卷 1759-1771页

作者： Duoyang Fan Xiaohui Liu Yueming ren Ziheng Luo Yanbing Li Jie Dong Seraphine v.egner Fei Chen Wenbin Zeng Xiangya School of Pharmaceutical Sciences Central South UniversityChangsha 410013China Hunan Key Laboratory of Diagnostic and Therapeutic Drug Research for Chronic Diseases Central South UniversityChangsha 410013China Sir William Dunn School of Pathology University of OxfordOxford OX13REUK Xiangya Hospital of Central South Univ.rsity Changsha 410013China Institute of Physiological Chemistry and Pathobiochemistry University of MünsterMünster 48149Germany

Bacterial biofilm-associated infection was one of the most serious threats to human health. Howev.r, effectiv. drugs for drug-resistance bacteria or biofilms remain rarely reported. Here, we propose an innov.tiv. strategy to dev.lop a multifunctional antimicrobial agent with broad-spectrum antibacterial activ.ty by coupling photosensitizers (PSs) with antimicrobial peptides (AMPs). This strategy capitalizes on the ability of PSs to generate reactiv. oxygen species (ROS) and the membrane-targeting property of AMPs (KRWWKWIRW, a peptide screened by an artificial neural network), synergistically enhancing the antimicrobial activ.ty. In addition, unlike conv.ntional aggregation-caused quenching (ACQ) photosensitizers, aggregation-induced emission (AIE) PSs show stronger fluorescence emission in the aggregated state to help v.sualize the antibacterial mechanism. In v.tro antibacterial experiments demonstrated the excellent killing effects of the dev.loped agent against both Gram-positiv. (G^(+)) and Gram-negativ. (G^(–)) bacteria. The bacterial-aggregations induced ability enhanced the photoactiv.table antibacterial activ.ty against G^(–) bacteria. Notably, it exhibited a significant effect on destroying MRSA biofilms. Moreov.r, it also showed remarkable efficacy in treating wound infections in mice in v.v.. This multifunctional antimicrobial agent holds significant potential in addressing the challenges posed by bacterial biofilm-associated infections and drug-resistant bacteria.

关键词： Photodynamic therapy Antimicrobial peptides Multidrug-resistant bacteria Aggregation-induced emission Anti-biofilm

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Mn incorporated RuO_(2) nanocrystals as an efficient and stable bifunctional electrocatalyst for oxygen ev.lution reaction and hydrogen ev.lution reaction in acid and alkaline

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Chinese Chemical Letters 2024年第10期35卷 194-200页

作者： Jing Cao Dezheng Zhang Bianqing ren Ping Song Weilin Xu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Univ.rsity of Science and Technology of China Hefei 230026China

The dev.lopment of efficient and stable bifunctional ov.rall water-splitting is a crucial goal for clean and renewable energy,which is a challenging ***,we report an Mn-incorporated RuO_(2)(MnRuO_(2))catalyst for highly efficient electrocatalytic oxygen ev.lution reaction(OER)and hydrogen ev.lution reaction(HER)in acid and alkaline *** from a more electrochemical activ. area with the incorporation of Mn,the Mn-RuO_(2)required an ov.rpotential of 200 mv.to attain a current density of 10 mA/cm^(2)for OER in *** result indicates that the doping of Mn into RuO_(2)can enhance the OER *** acidic ov.rall water-splitting electrolyzer with good stability constructed by bifunctional Mn-RuO_(2)only requires a cell v.ltage of 1.50 v.to afford 10 m A/cm^(2)and can operate stably for 50 h at50 mA/cm^(2),which is better than the state-of-the-art Ru-based ***,the Mn-Ru O_(2)exhibits excellent HER and OER activ.ty in alkaline media,and it shows superior activ.ty and durability for ov.rall water-splitting,only needing a cell v.ltage of 1.49 v.to attain 10 m A/cm^(2).The present work prov.des an efficient approach to designing and constructing efficient Ru-based electrocatalysts for ov.rall water-splitting.

关键词： RuO_(2)-based solid solution electrocatalysts Oxygenev.lution reaction Hydrogen ev.lution reaction Ov.rall watersplitting Acid andalkaline

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