检索结果-南通市图书馆

Comprehensive Assessment of sTGsA Generated skeletal Mechanism for the Application in Flame-Wall Interaction and Flame-Flow Interaction

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal science 2024年第5期33卷 1946-1960页

作者： yu Chunkan yang bin Institute of Technical Thermodynamics Karlsruhe Institute of TechnologyKarlsruhe 76131Germany Center for Combustion Energy Tsinghua UniversityBeijing 100084China

In this study,we conduct a thorough evaluation of the sTGsA-generated skeletal mechanism for C_(2)h_4/*** sTGsA-reduced mechanisms are taken into account,incorporating basic combustion models such as the homogeneous reactor model,one-dimensional flat premixed flame,and non-premixed counterflow ***,these models are applied to more complex combustion systems,considering factors like flame-flow interaction and flame-wall *** considerations take into account additional physical parameters and processes such as mixing frequency and *** results indicate that the skeletal mechanism adeptly captures the behavior of these complex combustion ***,it is suggested to incorporate strain rate considerations in generating the skeletal mechanism,especially when the combustion system operates under high turbulent intensity.

关键词： species-Targeted Global sensitivity Analysis(sTGsA) mechanism reduction Partially stirred Reactor(PasR) spark ignition head-on Quenching(hoQ)

Pig h3K4me3,h3K27ac,and gene expression profiles reveal reproductive tissue-specific activity of transposable elements

在线全文

学校读者我要写书评

暂无评论

Zoological Research 2024年第1期45卷 138-151页

作者： Tao Jiang Zhi-Min Zhou Zi-Qi Ling Qing Zhang Zhong-Zi Wu Jia-Wen yang si-yu yang bin yang Lu-sheng huang National Key Laboratory of Pig Genetic Improvement and Germplasm Innovation Jiangxi Agricultural UniversityNanchangJiangxi 330045China

Regulatory sequences and transposable elements(TEs)account for a large proportion of the genomic sequences of species;however,their roles in gene transcription,especially tissue-specific expression,remain largely *** serve as an excellent animal model for studying genomic sequence biology due to the extensive diversity among their wild and domesticated ***,we conducted an integrated analysis using h3K27ac ChIP-seq,h3K4me3 ChIP-seq,and RNA-seq data from 10 different tissues of seven fetuses and eight closely related adult *** aimed to annotate the regulatory elements and TEs to elucidate their associations with histone modifications and mRNA expression across different tissues and developmental *** on correlation analysis between mRNA expression and h3K27ac and h3K4me3 peak activity,results indicated that h3K27ac exhibited stronger associations with gene expression than ***,1.45%of TEs overlapped with either the h3K27ac or h3K4me3 peaks,with the majority displaying tissue-specific ***,a TE subfamily(LTR4C_ss),containing binding motifs for sIX1 and sIX4,showed specific enrichment in the h3K27ac peaks of the adult and fetal ***-seq analysis also revealed widespread expression of TEs in the exons or promoters of genes,including 4688 TE-containing transcripts with distinct development stage-specific and tissue-specific *** note,1967 TE-containing transcripts were enriched in the *** identified a long terminal repeat(LTR),MLT1F1,acting as a testis-specific alternative promoter in sRPK2(a cell cycle-related protein kinase)in our pig *** element was also conserved in humans and mice,suggesting either an ancient integration of TEs in genes specifically expressed in the testes or parallel evolutionary ***,our findings demonstrate that TEs are deeply embedded in the genome and exhibit important tissue-specific biological functions,particularly in the reproductive

关键词： Transposable elements Porcine histone modification Alternative promoter TE-containing transcript

high-superelasticity NiTi shape Memory Alloy by Directed Energy Deposition-Arc and solution heat Treatment

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica sinica(English Letters) 2024年第1期37卷 132-144页

作者： Junyi Ma Lin yu Qing yang Jie Liu Lei yang state Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan430070China school of Transportation and Logistics Engineering Wuhan University of TechnologyWuhan430074China

Directed energy deposition-arc(DED-Arc)technology has the advantages of simple equipment,low manufacturing cost and high deposition rate,while the use of DED-Arc has problems of microstructure inhomogeneity,position dependence of macroscopic mechanical properties and ***,it is necessary to carry out a subsequent heat treatment to improve its microstructure uniformity,mechanical properties and *** this investigation,the DED-Arc 15-layer NiTi alloy thin-walled parts with the solution treatment at different process parameters were studied to analyze the effects of solution heat treatment on microstructure,phase composition,phase transformation,microhardness,tensile and *** temperature range of solution treatment is 800-1050℃,and the treatment time range is 1-5.5 *** results show that after solution treatment at 800℃/1 h,the content of precipitated phase decreases,the grain is refined,the microhardness increases,and the mechanical properties in the 0°direction are *** strain recovery rate after 10 tensile cycles has increased from 37.13%(as-built)to 49.25%(solid solution treatment).This research provides an effective post treatment method for high-performance DED-Arc NiTi shape memory alloys.

关键词： Directed energy deposition-arc(DED-Arc) Cold metal transfer(CMT) NiTi shape memory alloys Microstructure Phase transformation solution heat treatment

Global Impact and balancing Act:Deciphering the Effect of Fluorination on b 1s binding Energies in Fluorinated h‑bN Nanosheets

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Precision Chemistry 2024年第6期2卷 239-244页

作者： yang Xiao Jun-Rong Zhang sheng-yu Wang Weijie hua MIIT Key Laboratory of semiconductor Microstructure and Quantum sensing Department of Applied PhysicsSchool of PhysicsNanjing University of Science and Technology210094 NanjingChina

X-ray photoelectron spectroscopy(XPs)is an important characterization tool in the pursuit of controllable fluorination of two-dimensional hexagonal boron nitride(h-bN).however,there is a lack of clear spectral interpretation,and seemingly conflicting measurements *** discern the structure−spectroscopy relation,we performed a comprehensive first-principles study on the boron 1s edge XPs of fluorinated h-bN(F-bN)*** gradually introducing 1−6 fluorine atoms into different boron or nitrogen sites,we created various F-bN structures with doping ratios ranging from 1 to 6%.Our calculations reveal that fluorines landed at boron or nitrogen sites exert competitive effects on the b 1s binding energies(bEs),leading to red or blue shifts in different *** calculations affirmed the hypothesis that fluorination affects 1s bEs of all borons in theπ-conjugated system,opposing the transferability from h-bN to ***,we observe that bE generally increases with higher fluorine concentration when both borons and nitrogens are nonexclusively *** findings provide critical insights into how fluorination affects boron’s 1s bEs,contributing to a better understanding of fluorination functionalization processes in h-bN and its potential applications in materials science.

关键词： X-ray photoelectron spectroscopy Core-electron binding energy Fluorination hexagonal boron nitride Cluster-periodic method born-Oppenheimer molecular dynamics

Enhanced Ion-selective Diffusion Achieved by supramolecular Interaction for high Thermovoltage and Thermal stability

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第2期7卷 200-208页

作者： Jiale Ke Xing Zhao Jie yang Kai Ke yu Wang Mingbo yang Wei yang College of Polymer science and Engineering Sichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu 610065China

Thermoelectric(TE)generators capable of converting thermal energy into applicable electricity have gained great popularity among emerging energy conversion ***-based ionic thermoelectric(i-TE)materials are promising candidates for energy conversion systems because of their wide sources,innocuity,and low manufacturing ***,common physically crosslinked biopolymer gels induced by single hydrogen bonding or hydrophobic interaction suffer from low differential thermal voltage and poor thermodynamic ***,we develop a novel i-TE gel with supramolecular structures through multiple noncovalent interactions between ionic liquids(ILs)and gelatin molecular *** thermopower and thermoelectric power factor of the ionic gels are as high as 2.83 mV K-1 and 18.33μW m^(-1)K^(-2),*** quasi-solid-state gelatin-[EMIM]DCA i-TE cells achieve ultrahigh 2 h output energy density(E_(2h)=9.9 mJ m^(-2))under an optimal temperature ***,the remarkable stability of the supramolecular structure provides the i-TE hydrogels with a thermal stability of up to 80℃.It breaks the limitation that biopolymer-based i-TE gels can only be applied in the low temperature range and enables biopolymer-based i-TE materials to pursue better performance in a higher temperature range.

关键词： biopolymer gel ionic liquid multiple noncovalent interactions supramolecular structure thermoelectric conversion

Assessment and control of the mine tremor disaster induced by the energy accumulation and dispersion of thick-hard roofs

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining science and Technology 2024年第7期34卷 925-941页

作者： bin yu Mingxian Peng yang Tai shuai Guo state Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China school of Resources and safety Engineering Chongqing UniversityChongqing 400044China school of Mines China University of Mining and TechnologyXuzhou 221116China

In order to solve the problem that current theory models cannot accurately describe thick-hard roof(ThR)elastic energy and assess the mine tremor disasters,a theoretical method,a Timoshenko beam theory on Winkler foundation was adopted to establish the ThR’s periodic breaking *** superposition principle was used for this complex model to derive the calculation formulas of the elastic energy and impact load on hydraulic ***,the influence of roof thickness h,cantilever length L_(1),and load q on ThR’s elastic energy and impact load was ***,the effect of mine tremor disasters was ***,it is revealed that:(1)The ThR’s elastic energy U exhibits power-law variations,with the fitted relationships U=0.0096L_(1)^(3.5866^),U=5943.9h^(-1.935),and U=21.049q^(2).(2)The impact load on hydraulic supports F_(ZJ) increases linearly with an increase in the cantilever length,thickness,and applied *** fitted relationships are F_(ZJ)=1067.3L_(1)+6361.1,F_(ZJ)=125.89h+15100,and F_(ZJ)=10420q+3912.6.(3)Ground hydraulic fracturing and liquid explosive deep-hole blasting techniques effectively reduce the ThR’s cantilever length at periodic breakages,thus eliminating mine tremor disasters.

关键词： Dynamic disaster Energy hard and thick roof Timoshenko beam

higgs boson decays h→MZ in the TNMssM

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第9期48卷 21-35页

作者： huai-Cong hu Zhao-yang Zhang Ning-yu Zhu hai-Xiang Chen school of Physical science and Technology Guangxi UniversityNanning 530004China

We study the sM-like higgs boson decays h→MZ in the triplet extended NMssM(TNMssM),where M is a vector meson(ρ,ω,φ,J/ψ,Υ).Compared to the minimal supersymmetric standard model(MssM),the TNMssM includes two new sU(2) triplets with hypercharge ±1 and an sM gauge singlet,which are coupled to each *** indirect contributions to the h→MZ decays are produced from the effective hyZ vertex,and they are more important than the direct *** results of this work could encourage a detection on h→Zγ at the future high energy colliders for exploring new physics beyond the sM.

关键词： supersymmetry higgs boson decay

A novel and promising engineering application of carbon dots:Enhancing the chloride binding performance of cement

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第6期35卷 409-416页

作者： Wu-Jian Long yang yu Chuang he Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering Key Lab of Coastal Urban Resilient InfrastructureMOECollege of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China

Corrosion of reinforcement induced by chloride invasion is extensively considered as the dominating deterioration mechanism of reinforced concrete(RC)structures,leading to serious safety hazards and tremendous economic ***,it still lacks well dispersive and cost-efficient nanomaterials to improve the anti-chloride-corrosion ability of RC ***,specific carbon dots(CDs)with high dispersity and low cost are deliberately designed,successfully prepared by hydrothermal processing,and then firstly applied to immensely enhance chloride binding performance of cement,thereby contributing to suppressing the corrosion of ***,the tailored CDs are composed of the carbon core with highly crystalline sp^(2)C structures and oxygen-containing groups connecting on the carbon core;The typical equilibrium test confirms that with respect to that of the blank cement paste,the chloride binding capacity of cement paste involving 0.2 wt%(by weight of cement)CDs is increased by 109% after 14-day exposure to 3 mol/L Na Cl solution;according to comprehensive analyses of phase compositions,the chloride binding mechanism of CDs-modified cement is rationally attributed to the fact that the incorporation of CDs advances the formation of calcium silicate hydrate(C-s-h)gels and Friedel's salt(Fs),thus enormously enhancing the physically adsorbed and chemically bound chloride ions of cement *** work not only firstly provides a novel high-dispersity and low-cost nanomaterial toward the durability enhancement of RC structures,but also broadens the application of CDs in the field of engineering,conducing to stimulating their industrialization development.

关键词： Carbon dots Chloride binding Cement Chloride binding mechanism Friedel’s salt

Kinetic-Thermodynamic Promotion Engineering toward high-Density hierarchical and Zn-Doping Activity-Enhancing ZnNiO@CF for high-Capacity Desalination

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第8期16卷 35-50页

作者： Jie Ma siyang Xing Yabo Wang Jinhu yang Fei yu College of Marine Ecology and Environment Shanghai Ocean University201306 ShanghaiPeople’s Republic of China school of Civil Engineering Kashi University844000 KashiPeople’s Republic of China Research Center for Environmental Functional Materials College of Environmental Science and EngineeringTongji University1239 Siping Road200092 ShanghaiPeople’s Republic of China school of Chemical science and Engineering Tongji University1239 Siping Road200092 ShanghaiPeople’s Republic of China Department of Energy Environmental&Chemical EngineeringWashington University in St.LouisSt.LouisMO 63130USA

Despite the promising potential of transition metal oxides(TMOs)as capacitive deionization(CDI)electrodes,the actual capacity of TMOs electrodes for sodium storage is significantly lower than the theoretical capacity,posing a major ***,we prepared the kinetically favorable Zn_(x)Ni_(1−x)O electrode in situ growth on carbon felt(Zn_(x)Ni_(1−x)O@CF)through constraining the rate of Oh^(−)generation in the hydrothermal ***_(x)Ni_(1−x)O@CF exhibited a high-density hierarchical nanosheet structure with three-dimensional open pores,benefitting the ion transport/electron *** tuning the moderate amount of redox-inert Zn-doping can enhance surface electroactive sites,actual activity of redox-active Ni species,and lower adsorption energy,promoting the adsorption kinetic and thermodynamic of the Zn_(0.2)Ni_(0.8)O@*** from the kinetic-thermodynamic facilitation mechanism,Zn_(0.2)Ni_(0.8)O@CF achieved ultrahigh desalination capacity(128.9 mgNaCl g^(-1)),ultra-low energy consumption(0.164 kW h kgNaCl^(-1)),high salt removal rate(1.21 mgNaCl g^(-1) min^(-1)),and good *** thermodynamic facilitation and Na^(+)intercalation mechanism of Zn_(0.2)Ni_(0.8)O@CF are identified by the density functional theory calculations and electrochemical quartz crystal microbalance with dissipation monitoring,*** research provides new insights into controlling electrochemically favorable morphology and demonstrates that Zn-doping,which is redox-inert,is essential for enhancing the electrochemical performance of CDI electrodes.

关键词： Zinc-nickel metal oxide high-density hierarchical Capacitive deionization Zinc-doping