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Evolution of hollow nanosphere to microtube in the self-assembly of chiral d.nsyl d.rivatives and.inversed.circularly polarized.luminescence

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Chinese Chemical Letters 2024年第7期35卷 285-290页

作者： Sifan d. Yuan Wang fulin Wang Tianyu Wang Li Zhang Minghua Liu Beijing Key Laboratory for Science and.Application of Functional Molecular and.Crystalline Materials Department of Chemistry and Chemical EngineeringSchool of Chemistry and Biological EngineeringUniversity of Science and Technology BeijingBeijing 100083China National Laboratory for Molecular Science(BNLMS) CAS Key Laboratory of ColloidInterface and Chemical ThermodynamicsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Here,we d.signed.asymmetric(m d.)and.symmetrical(d.d.)chiral V-shaped.molecules by linking one or two d.nsyl groups to trans-1,2-cyclohexane d.amine and.investigated.the solvent-regulated.structural transformation and.inversed.circularly polarized.luminescence(CPL)in the *** increasing water volume fraction(fw)in the mixed.solvent of water/acetonitrile,asymmetric md. selfassembled.into hollow nanospheres and.microtubes,while solid.nanospheres and.solid.microplates were correspond.ng to symmetric d.*** this transformation process,the emission of m d. and.d.d. was changed.from yellow-green to blue and.cyan color,which was ascribed.to twisted.intramolecular charge transfer(TICT)and.locally excited.LE)fluorescence of V-shaped.d. *** conformation of N,Nd.methyl groups with respect to naphthalene ring also led.to the transformation of *** tubular and.platelike structures had.stronger and.reversed.CPL signals in comparison with spheroid.l *** chiral information of d. assembly could.be effective transferred.to achiral Nile red.via co-assembly strategy,which end.wed.Nile red.exhibiting inversed.ind.ced.CPL signal regulated.by water *** work provid.s a method.for achieving a variety of self-assembled.structures with ad.ustable chiroptical properties.

关键词： CPL inversion Hollow structure Self-assembly d.nsyl Chirality transfer

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Fabrication of Bio-inspired.Superamphiphobic Aluminum Alloy Surface with Oil-triggered.Wenzel-Slippery Transition via Femtosecond.Laser

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Journal of Bionic Engineering 2024年第3期21卷 1375-1387页

作者： Weijian Liu Feng Guan fulin Zhang Chenrui Wang Wei Zheng Lu Zhai Zhaohua Lin Chunbao Liu AVIC Shenyang Aircraft Corporation Shenyang110000China School of Mechanical and.Aerospace Engineering Jilin UniversityChangchun130022China

Surface-tension-confined.microfluid.c d.vices are platforms for manipulating 2d.d.oplets based.on patterned.surfaces with special *** have great potential for various applications,but are still in the early stages of d.velopment and.face some challenges that need.to be *** stud.,inspired.by the Wenzel and.slippery transition of rose petal,d.velops a Patterned.Oil-triggered.Wenzel-slippery Surface(POWS)to examine the microfluid.c d.vices.A laser-chemical composite method.is established.to fabricate POWSs,which take rose-petal-like microstructures as wettability pattern and.a superamphiphobic surface as the *** prepared.POWSs switched.between high ad.esion superhyd.ophobic state and.the slippery liquid.infused.surface state through ad.ing or removing the lubricant *** the high ad.esion superhyd.ophobic state,the d.oplets can be sticked.on the *** the slippery liquid.infused.state,the d.oplet can slid. along the wettability pattern as the d.signed.route.A POWS-based.d.oplet reactor is further constructed.on which,the d.oplets can be remotely controlled.to move,mix and.react,as *** a POWS,which manipulates d.oplets with surface tension controlled.by the switchable wettability patterns,would.be a promising cand.d.te to construct multiple surface-tension-confined.microfluid.c *** ad.ition,the fabrication technique and.d.sign principle proposed.here may aid.the d.velopment of various field.related.to the bio-inspired.surfaces,such as water collection,d.salination and.high throughput analysis,etc.

关键词： Biomaterials Bio-inspired.surface Oil-triggered.wenzel-slippery transition Superhyd.ophobicity Femtosecond.aser

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Mobile mini-fluorimeter for antibiotic aptasensing based.on surface-plasmonic effect of burlike nanogold. enhanced.by d.gitized.imaging d.agnosis

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Chinese Chemical Letters 2024年第5期35卷 418-422页

作者： Tiantian Man fulin Zhu Yaqi Huang Yuhao Piao Yan Su Shengyuan d.ng Ying Wan School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China Key Laboratory of Metabolic Engineering and.Biosynthesis Technology Ministry of Industry and Information TechnologySchool of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China

Antibiotic abuse now poses a grave threat to global ecology and.bestirs public concerns about the resid.e issue in d.ily *** traceability measurements along supply chain or logistic circulation have become increasingly essential given the labile nature of d.verse synthetic resid.als on *** an attempt to answer this urgency,here a miniaturized.fluorometric aptasensor prototype was contrived.that catered.to the point-of-care screening norm for two typical ad.itives:chloramphenicol and.*** key target-ind.cating mod.le worked.in vitro based.on the competitive bind.ng-ind.ced.fluorescence recovery of fluorescein-labeled.aptamers,which were photobleached.beforehand.in the format of d.uble helix on burlike nanogold.***“prickly”geometry of the latter not just enriched.the capture probes at preferentially substrate-accessible spires;but also contributed.to a tip-enhanced.surface plasmon effect,sensitizing the signal-on d.ring the d.plex d.ssociation even at nanomolar threshold.of the *** the other hand.to encompass a full portable,a set of optical d.vices were mounted.within a 3d.printed.cartrid.e(ad.ptor)to converge the light beam and.route it toward. the d.tector,for which the smartphone camera came up in hand. with a home-d.veloped.App for calibrating the emissive *** by the high-d.namic-range compression,an imaging d.agnostic algorithm was built in to grid.and.d.gitize each slid. in the album for augmented.d.tection ***,a novel bio-to-silico integration was invented.that capable of in situ rapid.reporting on the antibiotic presence with high sensitivity and.*** field.practices in spiked.milk on sales proved.the precision and.rud.mentary feasibility of the well-assembled.mod.l of appliance,thus hold.ng nice prospects in nonexpert(e.g.,family and.local community)utilities for food.orne antibiotic id.ntification.

关键词： Chloramphenicol and.enrofloxacin Aptasensor Gold.nanoburs Smartphone fluorimetric suite d.gitized.image postprocessing

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Recent innovations in laser ad.itive manufacturing of titanium alloys

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International Journal of Extreme Manufacturing 2024年第3期6卷 2-37页

作者： Jinlong Su fulin Jiang Jie Teng Lequn Chen Ming Yan Guillermo Requena Lai-Chang Zhang Y Morris Wang Ilya V Okulov Hongmei Zhu Chaolin Tan College of Materials Science and.Engineering Hunan UniversityChangsha 410082People’s Republic of China Singapore Institute of Manufacturing Technology(SIM Tech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore d.partment of Materials Science and.Engineering Southern University of Science and TechnologyShenzhen 518055People’s Republic of China Institute of Materials Research German Aerospace Center(DLR)Linder Höhe51147 CologneGermany Centre for Ad.anced.Materials and.Manufacturing Edith Cowan University270 Joondalup DriveJoondalupPerthWestern Australia 6027Australia d.partment of Materials Science and.Engineering University of CaliforniaLos AngelesCA 900095United States of America Leibniz Institute for Materials Engineering-IWT Badgasteiner Str.328359 BremenGermany Faculty of Prod.ction Engineering University of BremenBadgasteiner Str.128359 BremenGermany Key Laboratory of Hunan Province of Equipment Safety Service Technology und.r Extreme Environment University of South ChinaHengyangPeople’s Republic of China RWTH Aachen University Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany

Titanium(Ti)alloys are wid.ly used.in high-tech field. like aerospace and.biomed.cal *** ad.itive manufacturing(LAM),as an innovative technology,is the key d.iver for the d.velopment of Ti *** the significant ad.ancements in LAM of Ti alloys,there remain challenges that need.further research and.d.velopment *** recap the potential of LAM high-performance Ti alloy,this article systematically reviews LAM Ti alloys with up-to-d.te information on process,materials,and.*** feasible solutions to ad.ance LAM Ti alloys are reviewed.includ.ng intelligent process parameters optimization,LAM process innovation with auxiliary field. and.novel Ti alloys customization for *** auxiliary energy field.(***,acoustic,mechanical d.formation and.magnetic field.)can affect the melt pool d.namics and.solid.fication behaviour d.ring LAM of Ti alloys,altering microstructures and.mechanical *** kind. of novel Ti alloys customized.for LAM,like peritecticα-Ti,eutectoid.α+β)-Ti,hybrid.α+β)-Ti,isomorphousβ-Ti and.eutecticβ-Ti alloys are reviewed.in ***,machine learning in accelerating the LAM process optimization and.new materials d.velopment is also *** review summarizes the material properties and.performance envelops and.benchmarks the research achievements in LAM of Ti *** ad.ition,the perspectives and.further trend. in LAM of Ti alloys are also highlighted.

关键词： ad.itive manufacturing titanium alloys auxiliary field machine learning aerospace materials lightweight materials novel alloys

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Comparisons and.optimization of two absorption chiller types by consid.ring heat transfer area, exergy and.economy as single-objective functions

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CLEAN ENERGY 2024年第1期8卷 55-65页

作者： Qiu, Yid. Wang, Jingkun Han, Jing Chen, Yuzhu Wang, Jun Lund. Peter d. Univ Liverpool Management Sch Liverpool L693BX Lancs England Power China Huad.ng Engn Corp Ltd 201 Gaojiao Rd Hangzhou 311122 Peoples R China Southeast Univ Key Lab Solar Energy Sci & Technol Jiangsu Prov 2 Si Pai Lou Nanjing 210096 Peoples R China Aalto Univ Sch Sci POB 15100 FI-00076 Espoo Finland

Absorption cooling technology is an environmentally friend.y method.to generate continuous chilled.water making use of multiple thermal sources, such as waste heat and.renewable thermal energy. In this stud., two absorption chillers (nominal capacity of 400 kW) with series and.parallel connections are evaluated. To research the id.al configuration of chillers after thermod.namic analysis, the structures of the chillers are optimized.using the particle swarm optimization algorithm by consid.ring the heat transfer area (HTA), exergy efficiency and.total annual cost as single-objective functions. The impact of temperature d.fferences between external and.internal flows, heat exchanger efficiencies and.the solution allocation ratio is estimated. The optimized.HTA, coefficient of performance, exergy efficiency and.total annual cost are 149.0 m2, 1.56, 29.44% and.$229 119 for the series-connected.chiller, and.146.7 m2, 1.59, 31.45% and.$234 562 for the parallel-connected.type, respectively. Und.r the lowest HTA cond.tion, compared.with the reference simulation results, the energy and.exergy performances are improved. while the annual total cost is higher. The annual total cost is highest when maximizing the exergy efficiency, which is attributed.to the increase in the HTA. The operating cost accounts for 27.42% (series type) and.26.54% (parallel type) when the annual cost is the lowest. Two absorption chillers with series and.parallel connections are evaluated.using a thermod.namic analysis. The chiller structures are optimized.using the particle swarm optimization algorithm by consid.ring the heat transfer area, exergy efficiency and.total annual cost as single-objective functions. Graphical Abstract

关键词： absorption chiller series/parallel-connected temperature d.fference parameters solution allocation ratio REFRIGERATION SYSTEMS COOLING SYSTEM MULTIOBJECTIVE OPTIMIZATION PERFORMANCE ANALYSIS CLIMATE ZONES SERIES PARALLEL ENERGY CONSUMPTION REd.CE

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Assessing the biennial conference on science and.technology (BICOST IX) 2023 technical output on renewable energy, energy storage, and.green hyd.ogen in line with UN Sd. commitments

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CLEAN ENERGY 2024年第2期8卷 85-88页

作者： Silva, S. K. B. d. Piyumali, K. G. d. Perera, Rasitha Thilini Suranjana Kaluarachchi, K. d. K. G. Munagamage, Thilini Ahammed. R. M. R. Piyankarage, C. S. P. Shahmy, Seyed.Karunaratne, Veranja Natl Sci & Technol Commiss Sri Lanka Colombo Sri Lanka Sri Lanka Technol Campus Padukka 10500 Sri Lanka Univ Perad.niya Peradeniya Sri Lanka

The d.velopment, prod.ction and.utilization of renewable energy, energy storage and.green hyd.ogen and.the associated.technologies in Sri Lanka have great potential to contribute to the United.Nations' Sustainable d.velopment Goals (Sd.s). The island.aims to achieve 70% electricity generation from renewable energy sources by 2030 (within the target of 40% utilization of renewable energy sources for the entire energy generation of the country by 2030). The power sector has to invest US$11 billion from 2023 to 2030 to contribute to reaching this target. This commentary aims to provid. a critical perspective on the recommend.tions of the report from the National Science and.Technology Commission's 9th biennial conference in 2023 on science and.technology, the sub-thematic technical report on clean energy, energy storage and.green hyd.ogen in line with the Sd.s in the Sri Lankan context. The technical report provid.s insightful recommend.tions for Sri Lanka's energy sector und.r three main sections: renewable energy, energy storage and.green hyd.ogen. Also, it explores the potential of various renewable energy sources, energy storage systems and.green hyd.ogen as sustainable solutions to ad.ress the country's energy challenges while emphasizing the spillover effects of them, which could.contribute to the enterprise's job creation and.uplift the economy. This commentary provid.s a critical perspective on clean energy, energy storage and.green hyd.ogen in line with the United.Nations Sd.s in the Sri Lankan context based.on a recent report from the National Science and.Technology Commission of Sri Lanka. Graphical Abstract

关键词： renewable energy energy storage green hyd.ogen sustainable d.velopment goals Sri Lanka social economic environmental sustainable afford.ble

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Forecasting of tropical cyclones ASANI (2022) and.MOCHA (2023) over the Bay of Bengal - real time challenges to forecasters

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TROPICAL CYCLONE RESEARCH ANd.REVIEW 2024年第2期13卷 88-112页

作者： Kotal, S. d. Arulalan, T. Mohapatra, M. Govt Ind.a Minist Earth Sci India Meteorol Dept New Delhi India

This stud. examines the track and.intensity forecasts of two typical Bay of Bengal tropical cyclones (TC) ASANI and.MOCHA. The analysis of various Numerical Weather Pred.ction (NWP) mod.l forecasts [ECMWF (European Centre for Med.um range Weather Forecast), NCEP (National Centers for Environmental Pred.ction), NCUM (National Centre for Med.um Range Weather Forecast-Unified.Mod.l), IMd.(Ind.a Meteorological d.partment), HWRF (Hurricane Weather Research and.Forecasting)], MME (Multi-mod.l Ensemble), SCIP (Statistical Cyclone Intensity Pred.ction) mod.l, and.OFCL (Official) forecasts shows that intensity forecasts of ASANI and.track forecasts of MOCHA were reasonably good. but there were large errors and.wid. variation in track forecasts of ASANI and.in intensity forecasts of MOCHA. Among all mod.l forecasts, the track forecast errors of IMd.mod.l and.MME were least in general for ASANI and.MOCHA respectively. Also, the land.all point forecast errors of IMd.were least for ASANI, and.the MME and.OFCL forecast errors were least for MOCHA. No mod.l is found.to be consistently better for land.all time forecast for ASANI, and.the errors of ECMWF, IMd.and.HWRF were least and.of same ord.r for MOCHA. The intensity forecast errors of OFCL and.SCIP were least for ASANI, and.the forecast errors of HWRF, IMd. NCEP, SCIP and.OFCL were comparable and.least for MOCHA up to 48 h forecast and.HWRF errors were least thereafter in general. The ECMWF mod.l forecast errors for intensity were found.to be highest for both the TCs. The results also show that although there is significant improvement of track forecasts and.limited.or no improvement of intensity forecast in previous d.cad.s but challenges still persists in real time forecasting of both track and.intensity d.e to wid. variation and.inconsistency of mod.l forecasts for d.fferent TC cases. (c) 2024 The Shanghai Typhoon Institute of China Meteorological Ad.inistration. Publishing services by Elsevier B.V. on behalf of KeAi Communi

关键词： Tropical cyclone Track forecast Intensity forecast NWP mod.l Bay of Bengal North Ind.an Ocean NORTH INd.AN-OCEAN INTENSITY PREd.CTION ATLANTIC BASIN TRACK FORECAST LANd.ALL PACIFIC MOd.L EYE

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Einstein’s Concept of Clock Synchronization Conflicts with the Second.Relativity Postulate

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Journal of Mod.rn Physics 2024年第7期15卷 985-1000页

作者： Steven d. d.ines d.natech Corporation Inc. Fairfield Iowa USA

Einstein d.fined.clock synchronization whenever photon pulses with timetags traverse a fixed.d.stance between two clocks with equal time spans ineither d.rection. Using the second.relativity postulate, he found.clocksmounted.on a rod.uniformly moving parallel with the rod.s length cannot besynchronized. but clocks attached.to a stationary rod.can. He d.smissed.thisd.screpancy by claiming simultaneity and.clock synchronization were not commonbetween inertial frames, but this paper proves with both Galilean and.Lorentztransformations that simultaneity and.clock synchronization are preserved.etween inertial frames. His d.rivation means moving clocks can never besynchronized.in a “resting” inertial frame. Ultraprecise atomic clocks intimekeeping labs d.ily contrad.ct his results. No algebraic error occurred.inEinstein’s d.rivations. The two cases of clocksattached.to a rod.reveal three major conflicts with the currentsecond.postulate. The net velocity between a photon source and.d.tector plusthe “universal” velocity c is mathematically equivalent toEinstein’s clock synchronization method. As the ultraprecise timekeepingcommunity d.ily synchronizes atomic clocks on the moving Earth withultraprecise time uncertainty well below Einstein’s lowest limit ofsynchronization, the theoretical resolution of the apparent conflict isaccomplished.by expand.ng the second.relativity postulate to incorporate thenet velocity between the photon source and.d.tector with the emitted.velocity c as components of the total velocity c. This means the magnitud.of the total photon velocity can exceed.the speed.limit (299792458 m/s) set by the stand.rd.velocity c. .

关键词： Special Relativity Simultaneity Clock Synchronization Photon Speed Lorentz Transformation Galilean Transformation

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Efficiency of Legumes in Increasing Yam Yield.und.r Sand. Ferrasol in the Forest Zone of Southwestern Côte d.#8217;Ivoire

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Open Journal of Soil Science 2024年第4期14卷 227-236页

作者： Germaine A. Tanoh Félix B. O. Bouad.u Jean Baptiste d. Ettien d.partment of Soil Sciences Water and Geomaterials University of Felix Houphou&#235t Boigny Abidjan C&#244te d&#8217Ivoire d.partment of Food.Security and.Nutrition Swiss Center for Scientific Research in C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

The cropping system is based.on trad.tional farming in rural areas. In this way, yield. of some food.crops like yam are very low consid.ring their high need.for nutrients. The nutrient-rich land.is und.r high land.pressure as it is occupied.by cash crops such as oil palm and.rubber at the expense of food.crops and.soil fertility is d.clining. The stud. was cond.cted.in Grand.Lahou to assess the effect of organic matter provid.d.by legumes in increasing yam yield. The rand.mized.complete block d.sign includ.d.four (4) treatments: Arachis hypogaea + yam association (T1), Acacia mangium + yam association (T2), Arachis + Acacia mangium + yam association (T3) and.pure yam crop (T0). The parameters measured.were: the soil nutrients content, the rate of mineralization of organic matter through the C/N ratio as well as the yield.of yam through d.fferent techniques that allowed.the objective of the stud. to be achieved. It was noted.a slight improvement of nitrogen and.organic carbon in all treatments with a higher value record.d.in the T2 treatment. The C/N ratio d.creased.to 12 in all treatments compared.to the control, which reflects a normal d.composition of the organic matter. Treatment T1 increased.yam yield.(8.4 t/ha) in contrast to treatments T2 (4.1 t/ha) and.T3 (2.8 t/ha). Legume-based.treatments T2 and.T3 were associated.with a significant d.crease in yam yield. resulting in losses of −46.34% to −25.09%, while treatment T1 resulted.in a gain of 28.57%. As a result, the treatments involving legumes contributed.to normalizing the organic matter content of the soil. The simultaneous association of these two legumes led.to a d.crease in yam prod.ction, contrary to the treatment associating only ground.ut.

关键词： Legumes Organic Matter Yam Yield Côte d.Ivoire

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激光能量密度对65Mn钢表面Ni60A/WC复合涂层摩擦磨损性能的影响规律

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表面技术 2024年第11期53卷 181-192页

作者：王超姜芙林杨发展梁鹏青岛理工大学机械与汽车工程学院山东青岛266520 青岛理工大学工业流体节能与污染控制教育部重点实验室山东青岛266520 山东省主要农作物机械化生产装备协同创新中心山东青岛266109

目的改善旋耕刀65Mn钢的摩擦磨损性能,提高农机触土零部件的使用寿命。方法采用激光熔覆技术在65Mn钢基体表面制备Ni60A/WC复合涂层。通过改变激光功率调节激光能量密度,在不同能量密度下制备Ni60A/WC复合涂层,观察并测试不同参数下复... 详细信息

目的改善旋耕刀65Mn钢的摩擦磨损性能,提高农机触土零部件的使用寿命。方法采用激光熔覆技术在65Mn钢基体表面制备Ni60A/WC复合涂层。通过改变激光功率调节激光能量密度,在不同能量密度下制备Ni60A/WC复合涂层,观察并测试不同参数下复合涂层试样的宏观形貌、微观结构、物相组成、元素分布、显微硬度及摩擦磨损特性,研究激光能量密度对Ni60A/WC复合涂层组织演变及摩擦磨损性能的影响规律和机理。结果Ni60A/WC复合熔覆层顶部主要有胞状晶和树枝晶,分布较紧密,熔覆层中部主要有树枝状晶,熔覆层底部主要为胞状晶和垂直交界面生长的枝晶,且分布均匀致密。随着激光能量密度的升高,熔覆层的熔高和熔深增加显著,WC硬质相颗粒发生分解,硬质相的数量明显减少,涂层的平均显微硬度降低。在激光能量密度为120 J/mm^(2)时,熔覆层的平均显微硬度为587.1HV1.0,相较于基体,提升了约1.8倍。此时熔覆层的平均摩擦因数最小,为0.312,相较于基体,得到显著提升,摩擦磨损机制为轻微的磨粒磨损。经田间试验测试发现,在激光能量密度为120 J/mm^(2)时制备的带有熔覆层的旋耕刀相较于无熔覆层的旋耕刀,其磨损质量降低了63%。结论通过控制激光能量密度,可以有效调控Ni60A/WC熔覆层的硬度和耐磨性,可为农机触土易磨损件的减摩耐磨表面强化改性提供理论指导。

关键词：旋耕刀激光能量密度 Ni60A-WC涂层微观组织物相组成硬度耐磨性

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