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Mitochondrial complex I assembles via a distal-pump module(P_(D))-early and P_(D)-late pathway in maize
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作者 Baoyin Chen Manna Huang +7 位作者 Junjun Wang Yuanye Gui Qingqing Wei Zhihui Xiu Feng Sun Yan-Zhuo Yang Chunhui Xu Bao-Cai Tan 《Journal of Integrative Plant Biology》 2025年第9期2461-2479,共19页
The L-shape mitochondrial complex I(CI)consists of four modules:nicotinamide-adenine dinucleotide hydrogen-binding module(N)and ubiquinone-binding module(Q)in the matrix arm and proximal-pump module(P_(P))and distal-p... The L-shape mitochondrial complex I(CI)consists of four modules:nicotinamide-adenine dinucleotide hydrogen-binding module(N)and ubiquinone-binding module(Q)in the matrix arm and proximal-pump module(P_(P))and distal-pump module(P_(D))in the membrane arm.As mitochondrial mutants are unavailable,the CI assembly pathway in plants is unclear.We investigated the CI assembly process using the maize RNA processing mutants deficient in individual CI components.Complexome profiling detected all major assembly intermediates of each module,confirming their independent assembly pathway.A block in the Q module assembly causes the accumulation of the membrane arm,whereas a block in the P_(D) module assembly results in the accumulation of CI^(*),a subcomplex assembled by P_(P) with the matrix arm.We further isolated and analyzed the mutants of two CI assembly factors,ZmGLDH and CRK1.The absence of either ZmGLDH or CRK1 eliminates the accumulation of CI^(*)but allows a substantial amount of CI to be assembled.The membrane arm was also accumulated in zmgldh and crk1.Together,these results suggest two CI assembly pathways.The P_(D)-early former starts with the assembly of P_(P) with P_(D),forming the membrane arm,then joins with the matrix arm to produce CI.The P_(D)-late pathway is initiated by assembling P_(P) with the matrix arm to yield CI^(*),which is then combined with P_(D) to form CI. 展开更多
关键词 assembly complex I complexome profiling MAIZE MITOCHONDRIA
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Advancing the Indian cattle pangenome: characterizing non-reference sequences in Bos indicus 被引量:1
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作者 Sarwar Azam Abhisek Sahu +6 位作者 Naveen Kumar Pandey Mahesh Neupane Curtis P Van Tassell Benjamin D Rosen Ravi Kumar Gandham Subha Narayan Rath Subeer S Majumdar 《Journal of Animal Science and Biotechnology》 2025年第2期497-516,共20页
Background India harbors the world’s largest cattle population,encompassing over 50 distinct Bos indicus breeds.This rich genetic diversity underscores the inadequacy of a single reference genome to fully capture the... Background India harbors the world’s largest cattle population,encompassing over 50 distinct Bos indicus breeds.This rich genetic diversity underscores the inadequacy of a single reference genome to fully capture the genomic landscape of Indian cattle.To comprehensively characterize the genomic variation within Bos indicus and,specifically,dairy breeds,we aim to identify non-reference sequences and construct a comprehensive pangenome.Results Five representative genomes of prominent dairy breeds,including Gir,Kankrej,Tharparkar,Sahiwal,and Red Sindhi,were sequenced using 10X Genomics‘linked-read’technology.Assemblies generated from these linked-reads ranged from 2.70 Gb to 2.77 Gb,comparable to the Bos indicus Brahman reference genome.A pangenome of Bos indicus cattle was constructed by comparing the newly assembled genomes with the reference using alignment and graph-based methods,revealing 8 Mb and 17.7 Mb of novel sequence respectively.A confident set of 6,844 Non-reference Unique Insertions(NUIs)spanning 7.57 Mb was identified through both methods,representing the pange-nome of Indian Bos indicus breeds.Comparative analysis with previously published pangenomes unveiled 2.8 Mb(37%)commonality with the Chinese indicine pangenome and only 1%commonality with the Bos taurus pange-nome.Among these,2,312 NUIs encompassing~2 Mb,were commonly found in 98 samples of the 5 breeds and des-ignated as Bos indicus Common Insertions(BICIs)in the population.Furthermore,926 BICIs were identified within 682 protein-coding genes,54 long non-coding RNAs(lncRNA),and 18 pseudogenes.These protein-coding genes were enriched for functions such as chemical synaptic transmission,cell junction organization,cell-cell adhesion,and cell morphogenesis.The protein-coding genes were found in various prominent quantitative trait locus(QTL)regions,suggesting potential roles of BICIs in traits related to milk production,reproduction,exterior,health,meat,and carcass.Notably,63.21%of the bases within the BICIs call set contained interspersed repeats,predominantly Long Inter-spersed Nuclear Elements(LINEs).Additionally,70.28%of BICIs are shared with other domesticated and wild species,highlighting their evolutionary significance.Conclusions This is the first report unveiling a robust set of NUIs defining the pangenome of Bos indicus breeds of India.The analyses contribute valuable insights into the genomic landscape of desi cattle breeds. 展开更多
关键词 BICIs Bos indicus CATTLE Genome assembly Linked-reads NUIs Pangenome
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Gossypium latifolium genome reveals the genetic basis of domestication of upland cotton from semi-wild races to cultivars 被引量:1
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作者 Chao Fu Nian Wang +7 位作者 Qingying Meng Zhiyong Xu Yu Le Xianlong Zhang Yangyang Wei Renhai Peng Chao Shen Zhongxu Lin 《The Crop Journal》 2025年第3期929-941,共13页
The genetic basis for Gossypium hirsutum race latifolium,the putative ancestor of cultivated upland cotton,emerging from the semi-wild races to be domesticated into cultivated upland cotton is unknown.Here,we reported... The genetic basis for Gossypium hirsutum race latifolium,the putative ancestor of cultivated upland cotton,emerging from the semi-wild races to be domesticated into cultivated upland cotton is unknown.Here,we reported a high-quality genome assembly of G.latifolium.Comparative genome analyses revealed substantial variations in both gene group composition and genomic sequences across 13 cotton genomes,including the expansion of photosynthesis-related gene groups in G.latifolium compared with other races and the pivotal contribution of structural variations(SVs)to G.hirsutum domestication.Based on the resequencing reads and constructed pan-genome of upland cotton,co-selection regions and SVs with significant frequency differences among different populations were identified.Genes located in these regions or affected by these variations may characterize the differences between G.latifolium and other races,and could be involved in maintenance of upland cotton domestication phenotypes.These findings may assist in mining genes for upland cotton improvement and improving the understanding of the genetic basis of upland cotton domestication. 展开更多
关键词 G.latifolium Genome assembly Comparative genome analysis Structural variations DOMESTICATION
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Mixture of Bacillus Amyloliquefaciens and Bacillus Pumilus Modulates Community Structures of Rice Rhizosphere Soil to Suppress Rice Seedling Blight 被引量:1
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作者 JIANG Nan QIU Jiehua +7 位作者 TIAN Dagang SHI Huanbin LIU Zhiquan WEN Hui XIE Shuwei CHEN Huizhe WU Meng KOU Yanjun 《Rice science》 2025年第1期118-130,I0067-I0070,共17页
Rice seedling blight,caused by various fungi,including Fusarium oxysporum,poses a severe threat to rice production.As awareness grows regarding the environmental and safety hazards associated with the application of f... Rice seedling blight,caused by various fungi,including Fusarium oxysporum,poses a severe threat to rice production.As awareness grows regarding the environmental and safety hazards associated with the application of fungicides for managing rice seedling blight,there has been a shift in focus towards biological control agents.In this study,we isolated biocontrol bacteria from paddy fields that significantly inhibited the growth of F.oxysporum in vitro and identified the strains as Bacillus amyloliquefaciens T40 and Bacillus pumilus T208.Additionally,our findings indicated that the combined application of these Bacillus strains in soil was more effective in reducing the incidence of rice seedling blight than their individual use.Analysis of 16S and internal transcribed spacer rRNA gene sequencing data revealed that the mixture of the T40 and T208 strains exhibited the lowest average clustering coefficients,which were negatively correlated with the biomass of F.oxysporum-inoculated rice seedlings.Furthermore,this mixture led to higher stochastic assembly(average|βNTI|<2)and reduced selection pressures on rice rhizosphere bacteria compared with individual strain applications.The mixture of the T40 and T208 strains also significantly increased the expression of defense-related genes.In conclusion,the mixture of the T40 and T208 strains effectively modulates microbial community structures,enhances microbial network stability,and boosts the resistance against rice seedling blight.Our study supports the development and utilization of biological resources for crop protection. 展开更多
关键词 application strategy disease control disease resistance microbial community structure microbial community assembly process Oryza sativa
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Precise assessment of lung cancer-derived exosomes based on dual-labelled membrane interface 被引量:1
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作者 Lingjun Sha Bing Bo +3 位作者 Jiayu Li Qi Liu Ya Cao Jing Zhao 《Chinese Chemical Letters》 2025年第4期576-580,共5页
Lung cancer-derived exosomes are a kind of valuable and clinically-predictable biomarkers for lung cancer, but they have the limitations in individual differences when being applied in liquid biopsy. To improve their ... Lung cancer-derived exosomes are a kind of valuable and clinically-predictable biomarkers for lung cancer, but they have the limitations in individual differences when being applied in liquid biopsy. To improve their application value and accuracy in clinical diagnosis, a dual-labelled electrochemical method is herein reported for precise assessment of lung cancer-derived exosomes. To do so, two probes are prepared for the dual labeling of exosome membrane to run DNA assembly reactions: One is modified with cholesterol and can insert into exosome membrane through hydrophobic interaction;another one is linked with programmed death ligand-1(PD-L1) antibody and can bind to exosome surface-expressing PD-L1 via specific immunoreaction. Quantum dots-tagged signal strands are used to collect respective DNA products, and produce stripping signals corresponding to the amounts of total exosome and surfaceexpressing PD-L1, respectively. A wide linear relationship is established for the quantitative determination of lung cancer-derived exosomes in the range from 103to 1010particles/m L, whereas the ratiometric value of the two stripping signals is proven to have a better diagnostic use in screening and staging of lung cancer when being applied to clinical samples. Therefore, our method might provide a new insight into precise diagnosis of lung cancer, and offer sufficient information to refiect the biomarker level and guide the personalized treatment level even at an early stage in clinic. 展开更多
关键词 Lung cancer-derived exosome Programmed death ligand-1 DNA assembly reaction Ratiometric signal Electrochemical analysis
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Spraying-assisted layer-by-layer assembled coatings with dual self-healing ability to resist degradation and enhance endothelialization of ZE21B alloys for vascular stents 被引量:1
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作者 Liu-Jie Qi Zhao-Qi Zhang +3 位作者 Mujahid Iqbal Fei Wang Jing-An Li Shao-Kang Guan 《Rare Metals》 2025年第5期3405-3427,共23页
Drug-eluting magnesium(Mg)alloy stents have a slower degradation rate and lower restenosis rate compared with uncoated stents,demonstrating good clinical efficacy.However,the release of anti-hyperplasia drugs from coa... Drug-eluting magnesium(Mg)alloy stents have a slower degradation rate and lower restenosis rate compared with uncoated stents,demonstrating good clinical efficacy.However,the release of anti-hyperplasia drugs from coatings delays endothelial tissue repair,thus leading to late stent thrombosis.To address these issues,a dual self-healed coating with various biological properties was fabricated on magnesium fluoride/polydopamine(MgF_(2)/PDA)-treated Mg alloys by spraying-assisted layer-by-layer(LBL)self-assembly of chitosan(CS),gallic acid(GA),and 3-aminobenzeneboronic acid-modified hyaluronic acid(HA-ABBA).The LBL coating,approximately 1.50μm thick,exhibited a uniform morphology with good adhesion strength(~1065 mN).The annual corrosion rate(Pi)of LBL samples was~1400 times slower than that of the Mg substrate,due to the physical barrier function provided by MgF_(2)/PDA layers and the dual self-healed ability of LBL layers.The rapid self-healing ability(with a healing period of~4 h under dynamic/static conditions)resulted from the synergistic interplay between the recombination of diverse chemical bonds within the LBL coating and the coordination of LBL-released GA with Mg2+,as corroborated by computer simulations.Compared with the drug-eluting coatings,the LBL sample demonstrated substantial advantages in anti-oxidation,anti-denaturation of fibrinogen,anti-platelet adhesion,anti-inflammation,anti-hyperplasia,and promoted-endothelialization.These benefits effectively address the limitations associated with drug-eluting coatings. 展开更多
关键词 Drug-eluting stents Degradable magnesium alloys Spraying-assisted LBL assembled coatings Dual self-healing properties Rapid endothelialization
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Cross-section design of the flow channels in membrane electrode assembly electrolyzer for CO_(2) reduction reaction through numerical simulations 被引量:1
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作者 Lili Zhang Hui Gao +7 位作者 Gong Zhang Yuning Dong Kai Huang Zifan Pang Tuo Wang Chunlei Pei Peng Zhang Jinlong Gong 《Chinese Chemical Letters》 2025年第1期332-337,共6页
Membrane electrode assembly(MEA)is widely considered to be the most promising type of electrolyzer for the practical application of electrochemical CO_(2) reduction reaction(CO_(2)RR).In MEAs,a square-shaped cross-sec... Membrane electrode assembly(MEA)is widely considered to be the most promising type of electrolyzer for the practical application of electrochemical CO_(2) reduction reaction(CO_(2)RR).In MEAs,a square-shaped cross-section in the flow channel is normally adopted,the configuration optimization of which could potentially enhance the performance of the electrolyzer.This paper describes the numerical simulation study on the impact of the flow-channel cross-section shapes in the MEA electrolyzer for CO_(2)RR.The results show that wide flow channels with low heights are beneficial to the CO_(2)RR by providing a uniform flow field of CO_(2),especially at high current densities.Moreover,the larger the electrolyzer,the more significant the effect is.This study provides a theoretical basis for the design of high-performance MEA electrolyzers for CO_(2)RR. 展开更多
关键词 Electrochemical reduction of CO_(2) Membrane electrode assembly Mass transfer Gas diffusion electrode Computational fluid dynamics
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The telomere-to-telomere gap-free genome assembly of Juglans sigillata 被引量:1
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作者 Delu Ning Tao Wu +7 位作者 Wenlong Lei Shengcheng Zhang Ting Ma Li Pan Liangjun Xiao Noor-ul-Ain Xingtan Zhang Fuliang Cao 《Horticultural Plant Journal》 2025年第4期1551-1563,共13页
Juglans sigillata is an economically valuable nut crop renowned for its nutritional richness,including essential nutrients,antioxidants,and healthy fats,which boost human cardial,brain and gut health.Despite its impor... Juglans sigillata is an economically valuable nut crop renowned for its nutritional richness,including essential nutrients,antioxidants,and healthy fats,which boost human cardial,brain and gut health.Despite its importance,the lack of a complete genome assembly has been a stumbling block in its biological breeding process.Therefore,we generated deep coverage ultralong Oxford Nanopore Technology(ONT)and PacBio HiFi reads to construct a telomere-to-telomere(T2T)genome assembly.The final assembly spans 537.27 Mb with no gaps,demonstrating a remarkable completeness of 98.1%.We utilized a combination of transcriptome data and homologous proteins to annotate the genome,identifying 36018 protein-coding genes.Furthermore,we profiled global cytosine DNA methylations using ONT sequencing data.Global methylome analysis revealed high methylation levels in transposable element(TE)-rich chromosomal regions juxtaposed with comparatively lower methylation in gene-rich areas.By integrating a detailed multi-omics data analysis,we obtained valuable insights into the mechanism underlying endopleura coloration.This investigation led to the identification of eight candidate genes(e.g.ANR)involved in anthocyanin biosynthesis pathways,which are crucial for the development of color in plants.The comprehensive genome assembly and the understanding of the genetic basis of important traits like endopleura coloration will open avenues for more efficient breeding programs and improved crop quality. 展开更多
关键词 Juglans sigillata Telomere-to-telomere(T2T)genome assembly Global methylation Endopleura color
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Z-Scheme membrane CdZnS/TiO_(2) heterojunction photocatalyst for efficient photocatalytic removal of Microcystis aeruginosa under simulated sunlight:Adjustable suspended depth and flexible assembly 被引量:1
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作者 Jing Tian Feng Qian +4 位作者 Yanguang Zhang Weibing Li Jiarun Li Shiqiang Chen Lei Wang 《Journal of Materials Science & Technology》 2025年第14期70-79,共10页
The application of photocatalytic technology in algae killing is limited by the non-floatability and difficulty in recycling of the photocatalysts.Loading photocatalyst on magnetic or floatable carriers is the most po... The application of photocatalytic technology in algae killing is limited by the non-floatability and difficulty in recycling of the photocatalysts.Loading photocatalyst on magnetic or floatable carriers is the most popular method for overcoming the above inadequacies.In this work,a CdZnS/TiO_(2) membrane photocatalyst with adjustable suspended depth(include floating)and flexible assembly is designed,which is less prone to dislodgement due to in situ synthesis and has a wider range of applicability than previously reported photocatalysts.The photocatalytic removal of Microcystis aeruginosa revealed that the suspended depth and distribution format of the CdZnS/TiO_(2) membrane photocatalysts have striking effects on the photocatalytic removal performance of Microcystis aeruginosa,the photocatalytic removal efficiency of CdZnS/TiO_(2)-2 membrane photocatalysts for Microcystis aeruginosa could reach to 98.6%in 60 min when the photocatalysts assembled in the form of 3×3 arrays suspended at a depth of 2 cm from the liquid surface.A tiny amount of TiO_(2) loading allows the formation of Z-Scheme heterojunction,resulting in accelerating the separation efficiency of photogenerated carriers,preserving the photogenerated electrons and holes with stronger reduction and oxidation ability and inhabiting the photo-corrosion of CdZnS. 展开更多
关键词 Suspended Flexible assembly CdZnS/TiO_(2) Membrane photocatalyst Photocatalytic removal of Microcystis aeruginosa
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A dual-surfactant template system for fabricating N-doped porous carbon nanorods for use as supercapacitor electrodes
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作者 PANG Chao-ran WANG Tian-wei +7 位作者 SONG Cai-cheng LIN Hua YAN Wen-jin WANG Peng CHEN Long-ming HU Ying-xin LU Rong-wen ZHANG Shu-fen 《新型炭材料(中英文)》 北大核心 2025年第5期1123-1135,I0036-I0050,共28页
The ability to control the preparation of one-dimensional(1D)porous carbon nanorods,especially during rapid polymerization,is key to their practical application.We report a method for synthesizing 1D porous carbon nan... The ability to control the preparation of one-dimensional(1D)porous carbon nanorods,especially during rapid polymerization,is key to their practical application.We report a method for synthesizing 1D porous carbon nanorods,characterized by the formation of rod-like mi-celles that are assembled from sodium palmitate and Pluronic F127,facilitated by protonated melamine,and subsequently converted into melamine-based N-doped polymer nanorods which were carbonized to produce the corres-ponding N-doped carbon nanorods.The specific capacitance of the supercapacitor used the as-pre-pared N-doped nanorods as electrode material in a three-electrode system was calculated to be 301.66 F g^(-1) at a current density of 0.2 A g^(-1),with an ultra-high specific surface area normalized capacitance of up to 67.07μF cm^(-2).The N-doping and their one-dimensionality give the nanorods a low internal resistance and good stability,making them well suited for fundamental studies and practical applications ranging from materials chemistry to electrochemical energy storage. 展开更多
关键词 Carbon nanorods Dual-surfactant system Cooperative assembly process N-DOPED SUPERCAPACITORS
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A review of graphene assembled films as platforms for electrochemical reactions
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作者 ZHU Yong-fang JI Xiao-dong +4 位作者 PAN Wen-kai WU Geng LI Peng LIU Bo HE Da-ping 《新型炭材料(中英文)》 北大核心 2025年第3期519-539,共21页
Because of their low electrical conductivity,sluggish ion diffusion,and poor stability,conventional electrode materials are not able to meet the growing demands of energy storage and portable devices.Graphene assemble... Because of their low electrical conductivity,sluggish ion diffusion,and poor stability,conventional electrode materials are not able to meet the growing demands of energy storage and portable devices.Graphene assembled films(GAFs)formed from graphene nanosheets have an ultrahigh conductivity,a unique 2D network structure,and exceptional mechanical strength,which give them the potential to solve these problems.However,a systematic understanding of GAFs as an advanced electrode material is lacking.This review focuses on the use of GAFs in electrochemistry,providing a comprehensive analysis of their synthesis methods,surface/structural characteristics,and physical properties,and thus understand their structure-property relationships.Their advantages in batteries,supercapacitors,and electrochemical sensors are systematically evaluated,with an emphasis on their excellent electrical conductivity,ion transport kinetics,and interfacial stability.The existing problems in these devices,such as chemical inertness and mechanical brittleness,are discussed and potential solutions are proposed,including defect engineering and hybrid structures.This review should deepen our mechanistic understanding of the use of GAFs in electrochemical systems and provide actionable strategies for developing stable,high-performance electrode materials. 展开更多
关键词 Graphene assembled films BATTERIES SUPERCAPACITORS Electrochemical sensors Synthesis methods
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Variation of Membrane Electrode Assembly Catalyst Layer in Unitized Regenerative Fuel Cell
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作者 Yollanda Nurcholifah Dedi Rohendi +4 位作者 Edy Herianto Majlan Nirwan Syarif Addy Rachmat Dwi Hawa Yulianti Nyimas Febrika S 《电化学(中英文)》 北大核心 2025年第4期32-43,共12页
A unitized regenerative fuel cell(URFC)is a device that may function reversibly as either a fuel cell(FC)or water elec-trolysis(WE).An important component of this device is the Membrane electrode assembly(MEA).Therefo... A unitized regenerative fuel cell(URFC)is a device that may function reversibly as either a fuel cell(FC)or water elec-trolysis(WE).An important component of this device is the Membrane electrode assembly(MEA).Therefore,this study aimed to compare the performance outcomes of MEA using electrodes with single and three catalyst layers.This study measured Electrochemical Surface Area(ECSA),Electrochemical Impedance Spectroscopy(EIS),X-ray Diffraction analysis(XRD),and X-ray Fluorescence(XRF).Furthermore,the round-trip efficiency(RTE)of the MEA,as w ell as the performance in FC and WE mode,was measured.In comparison,The ECSA values of Pt-Ru/C and Pt/C with three catalyst layers were higher than the single catalyst layer.This result was supported by electrode characterization data for XRD and XRF.The respective electrical conductivity values of Pt-Ru/C and Pt/C with three catalyst layers are also higher than the single cata-lyst layer,and the performance of URFC using MEA with three catalyst layers has the highest value of RTE among the MEA performances of URFC,which is 100%at a current density of 4 mA·cm-2. 展开更多
关键词 Unitized regenerative fuel cell Round trip efficiency Pt-Ru/C Membrane electrode assembly Electrochemical surface area
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From Factory Floors to Fashion Icons:How Dongguan’s Art Toys Are Winning the World
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作者 Alice Yang 《China's Foreign Trade》 2025年第4期34-36,共3页
When you think of Dongguan,chances are you picture humming factories and endless assembly lines.For decades,this city in southern China was known as the“world's workshop,”churning out everything from sneakers to... When you think of Dongguan,chances are you picture humming factories and endless assembly lines.For decades,this city in southern China was known as the“world's workshop,”churning out everything from sneakers to smartphones. 展开更多
关键词 worlds workshop assembly lines art toys humming factories assembly linesfor sneakers factories smartphones
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Research on Virtual Assembly System for Industrial Robots Based on Unity3D
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作者 Junyi OuYang Dezhang Xu 《Journal of Harbin Institute of Technology(New Series)》 2025年第1期15-24,共10页
To address the challenges of insufficient visualization in the industrial robot assembly operation system and the limitation of visualizing only geometric attributes of physical properties,a method is proposed for con... To address the challenges of insufficient visualization in the industrial robot assembly operation system and the limitation of visualizing only geometric attributes of physical properties,a method is proposed for constructing an industrial robot assembly system based on virtual reality technology.Focusing on the shaft hole assembly,the mechanical characteristics of the industrial robot shaft hole assembly process are analyzed and a dynamic model is established for shaft hole assembly operations.The key elements of virtual assembly operations for industrial robots are summarized and a five-dimensional model is proposed for industrial robot virtual operations.Utilizing the Unity3D engine based on the 5-D model for industrial robot virtual operations,an industrial robot shaft hole assembly system is developed.This system enables virtual assembly operations,displays physical attributes,and provides valuable references for the research of virtual systems. 展开更多
关键词 industrial robots virtual reality virtual assembly five⁃dimensional model assembly system
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Comparative Analysis of Golden Gate and ClassicalCloning Techniques in E.coli:A Study in Molecular Cloning Efficiency
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作者 Ziyao Liu 《Asia Pacific Journal of Clinical Medical Research》 2025年第2期29-38,共10页
Molecular cloning remains a cornerstone technique in genetic engineering and synthetic biology.In this study,we conducted a systematic comparative analysis between the classical cloning method and the Golden Gate asse... Molecular cloning remains a cornerstone technique in genetic engineering and synthetic biology.In this study,we conducted a systematic comparative analysis between the classical cloning method and the Golden Gate assembly technique,utilizing Escherichia coli as the model organism.Through polymerase chain reaction(PCR)amplification,restriction enzyme digestion,ligation,transformation,and Sanger sequencing,we assessed the operational efficiency and cloning fidelity of both strategies.Our results demonstrated that Golden Gate assembly,leveraging type IIS restriction enzymes and simultaneous ligation,significantly enhanced cloning efficiency and precision,particularly for seamless multi-fragment assembly.In contrast,the classical cloning approach maintained certain advantages in simplicity and robustness for specific experimental conditions.Challenges encountered during transformation and sequencing highlighted the critical impact of technical accuracy on experimental outcomes.This study underscores the importance of selecting appropriate cloning methodologies tailored to experimental objectives and laboratory capabilities,providing a foundation for optimized molecular cloning workflows in future synthetic biology and biotechnology applications. 展开更多
关键词 Golden Gate Assembly Classical Cloning Escherichia Coli Molecular Cloning DNA Assembly Recombinant DNA Technology Transformation Effi ciency Synthetic Biology
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Assembly of fullerenes using a highly preorganized janusarene
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作者 Nianqiang Jiang Yiqiang Ou +2 位作者 Yanpeng Zhu Dingyong Zhong Jiaobing Wang 《Chinese Chemical Letters》 2025年第4期319-322,共4页
Molecular recognition of fullerene using various host compounds is well-known in literature.But most studies focus on host-vip complexation in solution using host compounds with a single binding cavity.Herein,we rep... Molecular recognition of fullerene using various host compounds is well-known in literature.But most studies focus on host-vip complexation in solution using host compounds with a single binding cavity.Herein,we report a series of highly preorganized janusarene derivatives with homoditopic binding sites.These novel janusarenes can bind and align various fullerenes such as C_(60),C_(70),C_(84),and Gd@C_(82)in a highly efficient manner.Robust shape complementary association and assembly are observed in solution,in the bulk solid state,in the liquid crystalline state,or on surface,and the assembled structures are characterized by nuclear magnetic resonance(NMR)titration,X-ray diffraction,polarized optical microscopy,and scanning tunneling microscopy. 展开更多
关键词 Janusarene CONFORMATION FULLERENE HOST ASSEMBLY
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Gap-free genome assembly and metabolomics analysis of common bean provide insights into genomic characteristics and metabolic determinants of seed coat pigmentation
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作者 Bo Zhao Hui Zhang +13 位作者 Qin Zhao Rina Wu Qian You Bihui Wang Yiming Wang Zhilan Yan Peng Wang Chunguo Huang Wei Zhang Youmei Wang Xiaopeng Hao Jing Wu Lixiang Wang Zhaosheng Kong 《Journal of Genetics and Genomics》 2025年第6期852-855,共4页
Common bean(Phaseolus vulgaris L.)is a vital source of protein and essential nutrients for human consumption and plays a key role in sustainable agriculture due to its nitrogen-fixing ability(Nadeem et al.,2021).Kidne... Common bean(Phaseolus vulgaris L.)is a vital source of protein and essential nutrients for human consumption and plays a key role in sustainable agriculture due to its nitrogen-fixing ability(Nadeem et al.,2021).Kidney beans,a subcategory of dry common beans,are highly valued for their rich protein,dietary fiber,low fat content,and various trace elements(Garcia-Cordero et al.,2021).Despite the release of several de novo genome assemblies(Goodstein et al.,2012;Schmutz et al.,2014;Vlasova et al.,2016;Cortinovis et al.,2024),existing common bean genomes remain incomplete,particularly in complex regions such as centromeres and telomeres,limiting a comprehensive understanding of the genomic landscape. 展开更多
关键词 trace elements garcia cordero genomic characteristics gap free genome assembly metabolomics analysis common beansare de novo genome assemblies goodstein sustainable agriculture common bean
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Prediction of Assembly Intent for Human-Robot Collaboration Based on Video Analytics and Hidden Markov Model
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作者 Jing Qu Yanmei Li +2 位作者 Changrong Liu Wen Wang Weiping Fu 《Computers, Materials & Continua》 2025年第8期3787-3810,共24页
Despite the gradual transformation of traditional manufacturing by the Human-Robot Collaboration Assembly(HRCA),challenges remain in the robot’s ability to understand and predict human assembly intentions.This study ... Despite the gradual transformation of traditional manufacturing by the Human-Robot Collaboration Assembly(HRCA),challenges remain in the robot’s ability to understand and predict human assembly intentions.This study aims to enhance the robot’s comprehension and prediction capabilities of operator assembly intentions by capturing and analyzing operator behavior and movements.We propose a video feature extraction method based on the Temporal Shift Module Network(TSM-ResNet50)to extract spatiotemporal features from assembly videos and differentiate various assembly actions using feature differences between video frames.Furthermore,we construct an action recognition and segmentation model based on the Refined-Multi-Scale Temporal Convolutional Network(Refined-MS-TCN)to identify assembly action intervals and accurately acquire action categories.Experiments on our self-built reducer assembly action dataset demonstrate that our network can classify assembly actions frame by frame,achieving an accuracy rate of 83%.Additionally,we develop a HiddenMarkovModel(HMM)integrated with assembly task constraints to predict operator assembly intentions based on the probability transition matrix and assembly task constraints.The experimental results show that our method for predicting operator assembly intentions can achieve an accuracy of 90.6%,which is a 13.3%improvement over the HMM without task constraints. 展开更多
关键词 Human-robot collaboration assembly assembly intent prediction video feature extraction action recognition and segmentation HMM
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Haplotype-resolved telomere-to-telomere reference genome of sweet cherry‘Tieton’v3.0 characterized the large fragment deletion associated with yellow-skinned variety
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作者 Ting Yu Ke Lin +7 位作者 Dongzi Zhu Xingyan Li Qian Qiao Po Hong Shibo Lin Quanfu Zhang Qingzhong Liu Jiawei Wang 《Journal of Integrative Agriculture》 2025年第11期4271-4281,共11页
Sweet cherry(Prunus avium)represents a significant stone fruit crop in temperate regions worldwide.While molecular breeding has progressed substantially following the initial sweet cherry genome release,existing genom... Sweet cherry(Prunus avium)represents a significant stone fruit crop in temperate regions worldwide.While molecular breeding has progressed substantially following the initial sweet cherry genome release,existing genome assemblies contain unresolved gaps and comprise consensus chimeric sequences that fail to differentiate haplotype alleles,significantly constraining research on important agronomic trait inheritance.This study presents a phased-resolved telomere-to-telomere reference genome of sweet cherry‘Tieton’.The assembly anchors 653.03 Mb of sequence onto 16 pseudochromosomes representing two haplotypes,with 67,012 coding genes identified(33,777 in hapA and 33,235 in hapB).The genome demonstrates superior quality metrics,including a consensus accuracy exceeding QV44,contig N50 above 17.94 Mb,Benchmarking Universal Single-Copy Orthologs completeness of 98.7%,and a long terminal repeat(LTR)assembly index exceeding 20.This genome provides phased and annotated chromosome pairs,offering a comprehensive view of sweet cherry’s diploid genome organization.Utilizing this reference genome,we identified a large fragment deletion associated with yellow-skinned fruit in sweet cherry‘13-33’.This resource will significantly enhance breeding efforts and genetic research in sweet cherries. 展开更多
关键词 sweet cherry NANOPORE Hi-C genomic chromosomal assembly
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Seasonal patterns in diversity,complexity and community assembly of soil microorganisms in a subtropical coastal wetland
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作者 Guiping YE Nan YANG +8 位作者 Ziyang HE Ping YANG Ruichao YE Miaohua JIANG Dan WANG Dingding CAO Wenbin ZHANG Xiangying WEI Yongxin LIN 《Pedosphere》 2025年第4期728-740,共13页
Soil microbiomes are significant for biodiversity,crucial for ecosystem functions,and vital for the health of various organisms.Nevertheless,the impacts of season and plant species shifts on soil microbial diversity a... Soil microbiomes are significant for biodiversity,crucial for ecosystem functions,and vital for the health of various organisms.Nevertheless,the impacts of season and plant species shifts on soil microbial diversity and community assembly are still poorly understood.This study explored soil bacterial,fungal,and protistan communities during summer and winter in a coastal wetland affected by Spartina alterniflora invasion and subsequent Cyperus malaccensis or Kandelia obovata restoration.The results showed that bacterial,fungal,and protistan diversity were 2.63%,40.3%,and 9.90%higher in winter than in summer,respectively.Plant species had a distinct impact on microbial diversity.Notably,K.obovata restoration significantly increased bacterial diversity,but decreased protistan diversity,with no effect on fungal diversity when compared to S.alterniflora invasion.Season and plant species both significantly influenced the community structure of bacteria,fungi,and protists.However,protistan community structure was more sensitive to season compared to the structure of bacterial and fungal communities.The complexity of co-occurrence networks within or among bacteria,fungi,and protists was higher in winter than in summer.Bacterial and protistan community assembly was primarily driven by stochastic processes,while fungal assembly was dominated by deterministic processes.Bacterial and protistan community assembly exhibited lower stochasticity in winter compared to summer,suggesting a more deterministic assembly of communities during winter.Our findings highlight the critical role of season and plant species in regulating microbial communities,revealing higher microbial diversity,network complexity,and determinism in community assembly during winter compared to summer in a subtropical coastal wetland. 展开更多
关键词 assembly process BACTERIA FUNGI microbial community PROTIST SEASONALITY wetland restoration
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