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Inclusion of CoTiO_(3) to ameliorate the re/dehy.rogenation properties of the Mg–Na–Al sy.tem

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Journal of Magnesium and Alloy. 2024年第3期12卷 1215-1226页

作者： N.A.Ali N.y.y.snizam N.A.Sazelee Sami-ullah Rather Haizhen Liu M.Ismail Energy.Storage Research Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Department of Chemical and Materials Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guangxi Novel Battery.Materials Research Center of Engineering Technology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key.Laboratory.of Featured Metal Materials and Life-Cy.le Safety.for Composite Structures Nanning 530004China

For the first time,the MgH_(2)–NaAlH_(4)(ratio 4:1)destabilized sy.tem with CoTiO_(3) addition has been *** CoTiO_(3)-doped MgH_(2)–NaAlH_(4) sample begins to dehy.rogenate at 130℃,which is declined by.40℃ compared to the undoped MgH_(2)–NaAlH_(4).Moreover,the de/rehy.rogenation kinetics characteristics of the CoTiO_(3)-doped MgH_(2)–NaAlH_(4) were greatly.*** the inclusion of CoTiO_(3),the MgH_(2)–NaAlH_(4) composite absorbed 5.2 wt.%H_(2),higher than undoped MgH_(2)–NaAlH_(4).In the context of dehy.rogenation,the CoTiO_(3)-doped MgH_(2)–NaAlH_(4) sample desorbed 2.6 wt.%H_(2),almost doubled compared to the amount of hy.rogen desorbed from the undoped MgH_(2)–NaAlH_(4) *** activation energy.obtained by.the Kissinger analy.is for MgH_(2) decomposition was significantly.lower by.35.9 kJ/mol than the undoped MgH_(2)–NaAlH_(4) *** reaction mechanism demonstrated that new phases of MgCo and AlTi_(3) were generated in situ during the heating process and are likely.to play.a substantial cataly.ic function and be useful in ameliorating the de/rehy.rogenation properties of the destabilized MgH_(2)–NaAlH_(4) sy.tem with the inclusion of CoTiO_(3).

关键词： Destabilize sy.tem Magnesium hy.ride Sodium alanate Hy.rogen storage Additive.

My.orrhizal fungi mitigate nitrogen losses of an experimental grassland by.facilitating plant uptake and soil microbial immobilization

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Pedosphere 2024年第2期34卷 399-410页

作者： y.ngy.ng JIA Marcel G.A.VAN DER HEIJDEN Alain y.VALZANO-HELD Markus JOCHER Florian WALDER Postdoctoral Mobile Station of Ecology College of Ecology and EnvironmentXinjiang UniversityÜrümqi 830046China Research Group Plant-Soil Interactions AgroscopeZürich 8046Switzerland Research Group Climate and Agriculture AgroscopeZürich 8046Switzerland Department of Plant and Microbial Biology University of ZürichZürich 8008Switzerland Research Group Soil Quality.and Soil Use AgroscopeZürich 8046Switzerland

Nitrogen(N)is one of the most limited nutrients of terrestrial ecosy.tems,whose losses are prevented in tightly.coupled cy.les in finely.tuned *** change-induced N enrichment through atmospheric deposition and application of vast amounts of fertilizer are now challenging the terrestrial N *** my.orrhizal fungi(AMF)are known drivers of plant-soil nutrient fluxes,but a comprehensive assessment of AMF involvement in N cy.ling under global change is still ***,we simulated N enrichment by.fertilization(low/high)in experimental grassland microcosms under greenhouse conditions in the presence or absence of AMF and continuously.monitored different N pathway. over nine *** found that high N enrichment by.fertilization decreased the relative abundance of legumes and the plant species dominating the plant community.changed from grasses to forbs in the presence of AMF,based on aboveground *** presence of AMF alway. maintained plant N:phosphorus(P)ratios between 14 and 16,no matter how the soil N availability.*** in plant N:P ratios due to the increased plant N and P uptake might thus be a primary.pathway.of AMF altering plant community.***,we constructed a comprehensive picture of AMF’s role in N cy.ling,highlighting that AMF reduced N losses primarily.by.mitigating N leaching,while N_(2)O emissions play.d a marginal *** my.orrhizal fungi reduced N_(2)O emissions directly.through the promotion of N_(2)O-consuming *** underly.ng mechanism for reducing N leaching is mainly.the AMF-mediated improved nutrient uptake and AMF-associated microbial *** results indicate that sy.ergies between AMF and other soil microorganisms cannot be ignored in N cy.ling and that the integral role of AMF in N cy.ling terrestrial ecosy.tems can buffer the upcoming global changes.

关键词： N cy.ling N enrichment N uptake N:P ratio plant community.structure sy.biotic soil fungi

IMPROVEMENT OF BUBBLE MODEL FOR CAVITATING FLOW SIMULATIONS

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Journal of Hy.rody.amics 2009年第1期21卷 41-46页

作者： TAMURA y. MATSUMOTO y. Computational Science and Engineering Toyo University Kujirai 2100 KawagoeSaitama 350-8585 Japan Mechanical Engineering University of Tokyo Hongo 7-3-1 Bunkyo-kuTokyo 113-8656 Japan

In the present research, a bubble dy.amics based model for cavitating flow simulations is extended to higher void fraction region for wider range of applications. The present bubble model is based on the so-called Ray.eigh-Plesset equation that calculates a temporal bubble radius with the surrounding liquid pressure and is considered to be valid in an area below a certain void fraction. The solution algorithm is modified so that the Ray.eigh-Plesset equation is no more solved once the bubble radius （or void fraction） reaches at a certain value till the liquid pressure recovers above the vapor pressure in order to overcome this problem. This procedure is expected to stabilize the numerical calculation. The results of simple two-dimensional flow field are presented compared with the existing bubble model.

关键词： cavitation model Computational Fluid Dy.amics (CFD) cavitation flow Ray.eigh-Plesset equation

Distributed fixed-time observers for linear time-invariant sy.tems

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Kongzhi y. Juece/Control and Decision 2024年第11期39卷 3664-3672页

作者： Zhang T. Wu H.-y. Zhu Z.-H. Zheng X.-J. Guan Z.-H. Engineering Research Center for Metallurgical Automation and Measurement Technology.of Ministry.of Education Wuhan University of Science and Technology Wuhan 430081 China Institute of Robotics and Intelligent Sy.tems Wuhan University of Science and Technology Wuhan 430081 China School of Artificial Intelligence and Automation Huazhong University of Science and Technology Wuhan 430074 China

A class of distributed fixed-time convergent observers is designed based on the bi-limit weighted homogeneous approximation theory.and observability.decomposition for the distributed state estimation of linear time-invariant sy.tems. Firstly. for a single-input-single-output integrating chain sy.tem, a centralized fixed-time observer is designed for the sy.tem using bi-limit weighted homogeneous estimation. Then, the linear time-invariant sy.tem is decomposed into observable and unobservable subsy.tems based on the observability.decomposition. Each agent in the sensor network reconstructs local observable sub-states in a fixed time based on the centralized observer by.using only.the sy.tem output measurements, and then state information between the agents is used to construct a consistent algorithm to estimate the local unobservable sub-states in a fixed time, thus realizing state omniscience in a fixed time. Unlike previous works, this paper does not need to construct a specific Ly.punov function to give an expression for the convergence time. Finally. the effectiveness of the designed observer is verified by.simulations. © 2024 Northeast University. All rights reserved.

关键词： distributed estimation fixed-time observer linear sy.tems observability.decomposition sensor networks weighted homogeneity

Association between the Different Phenoty.es of Poly.y.tic Ovary.Sy.drome and the Outcome in in Vitro Fertilization at Human Reproductive Center Paul et Chantal Biy.-y.oundé

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Open Journal of Obstetrics and Gy.ecology 2024年第1期14卷 18-28页

作者： Ngono Akam Vanina Ngah Minala Belinga Etienne Belinga Etienne Mpono Pascale Ny.da Serges Onana y. Kasia Cho Josely.e Kasia Florence Adjessa Abega Kasia Jean Marie Gy.aecological Endoscopic Surgery.and Human Reproductive Teaching Hospital Yaoundé Cameroon Department of Gy.ecology.and Obstetrics Faculty of Medicine and Biomedical Sciences University of Yaoundé 1 Yaoundé Cameroon

Background: In Vitro Fertilization/Intracy.oplasmic Sperm Injection (IVF/ICSI) represents the final step in the management of Poly.y.tic Ovarian Sy.drome (PCOS). Our objective was to study.the association between PCOS phenoty.es and IVF/ICSI results in women admitted to Gy.aecological Endoscopic Surgery.and Human Reproductive Teaching Hospital (CHRACERH). Material and Method: We carried out a cohort study.with historical-prospective data collection over a period of seven y.ars (January.2016 to March 2023) at Chracerh. PCOS patients were subdivided into 4 subgroups A, B, C and D. Results: We recruited 128 patients including 64 PCOS patients divided into four phenoty.es and 64 non-PCOS patients constituting the control group. Phenoty.e D without hy.erandrogenism had used the lowest dose of gonadotropins, i.e. 1939.7 ± 454.3 IU, and had produced a greater quantity.of estradiol on the day.ovulation was triggered (6529.8 ± 4324.8 ng/ml). The average number of punctured follicles and mature oocy.es were higher in the phenoty.e D group. Ovarian hy.erstimulation sy.drome (OHSS) occurred mainly.in phenoty.e D (3/35), with an estimated prevalence of 2.3%. The fertilization rate seemed lower in the hy.erandrogenic phenoty.es A, B, C compared to the group without hy.erandrogenism without significant difference (p = 0.461). The biological pregnancy.rate and live birth rate were comparable between the different groups. Conclusion: Phenoty.e D used less dose of gonadotropins. Biological pregnancy.and live birth rates were comparable between the different phenoty.es.

关键词： Phenoty.e Poly.y.tic Ovarian Sy.drome IVF/ICSI Prognosis CHRACERH

Tailored architecture of composite electroly.e for all-solid-state sodium batteries with superior rate performance and cy.le life

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Nano Research 2024年第5期17卷 4171-4180页

作者： Xiang Guan Zhenhua Jian Xingan Liao Wenchao Liao y.nfei Huang Dazhu Chen Robert K.y.Li Chen Liu Shenzhen Key.Laboratory.of Poly.er Science and Technology Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518055China Department of Materials Science and Engineering City University of Hong KongHong KongChina

Seeking for composite electroly.es reinforced all-solid-state sodium ion batteries with superior long lifespan and rate performance remains a great ***,a unique strategy.to tailor the architecture of composite electroly.e via inserting poly.er chains into a small quantity.of sulfate sodium grafted C_(48)0H_(28)O_(32)Zr_(6)(UIOSNa)is *** intimate contact between poly.er segments and UIOSNa with limited pore size facilitates the anion immobilization of sodium salts and reduction of poly.er cry.tallinity.thereby.providing rapid ion conduction and reducing the adverse effect caused by.the immigration of *** tNa+grafting of-SO_(3)Na groups on fillers allows the free movement of more sodium ions to further improve and ionic ***,even with the low content of UIOSNa fillers,a high ionic conductivity.of 6.62×10^(-4) S·cm^(-1) at 60℃ and a transference number of 0.67 for the special designed composite electroly.e are *** assembled all-solid-state sodium cell exhibits a remarkable rate performance for 500 cy.les with 95.96%capacity.retention at a high current rate of 4 *** corresponding pouch cell can stably.work for 1000 cy.les with 97.03%capacity.retention at 1 C,which is superior to most of the reported composite electroly.es in the literature.

关键词： solid state sodium battery composite electroly.e rate performance cy.le life

Phy.ics-informed deep learning for fringe pattern analy.is

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Opto-Electronic Advances 2024年第1期7卷 4-15页

作者： Wei y.n y.xuan Che Xinsheng Li Mingy. Li y.n Hu Shijie Feng Edmund y.Lam Qian Chen Chao Zuo Smart Computational Imaging Laboratory.SCILab) School of Electronic and Optical EngineeringNanjing University of Science and TechnologyNanjing 210094China Smart Computational Imaging Research Institute(SCIRI)of Nanjing University.of Science and Technology Nanjing 210019China Jiangsu Key.Laboratory.of Spectral Imaging&Intelligent Sense Nanjing 210094China Department of Electrical and Electronic Engineering The University of Hong KongPokfulamHong Kong SAR 999077China

Recently.deep learning has y.elded transformative success across optics and photonics,especially.in optical *** neural networks (DNNs) with a fully.convolutional architecture (e.g.,U-Net and its derivatives) have been widely.implemented in an end-to-end manner to accomplish various optical metrology.tasks,such as fringe denoising,phase unwrapping,and fringe ***,the task of training a DNN to accurately.identify.an image-to-image transform from massive input and output data pairs seems at best naive,as the phy.ical laws governing the image formation or other domain expertise pertaining to the measurement have not y.t been fully.exploited in current deep learning *** this end,we introduce a phy.ics-informed deep learning method for fringe pattern analy.is (PI-FPA) to overcome this limit by.integrating a lightweight DNN with a learning-enhanced Fourier transform profilometry.(Le FTP) *** parameterizing conventional phase retrieval methods,the Le FTP module embeds the prior knowledge in the network structure and the loss function to directly.provide reliable phase results for new ty.es of samples,while circumventing the requirement of collecting a large amount of high-quality.data in supervised learning *** by.the initial phase from Le FTP,the phase recovery.ability.of the lightweight DNN is enhanced to further improve the phase accuracy.at a low computational cost compared with existing end-to-end *** results demonstrate that PI-FPA enables more accurate and computationally.efficient single-shot phase retrieval,exhibiting its excellent generalization to various unseen objects during *** proposed PI-FPA presents that challenging issues in optical metrology.can be potentially.overcome through the sy.ergy.of phy.ics-priors-based traditional tools and data-driven learning approaches,opening new avenues to achieve fast and accurate single-shot 3D imaging.

关键词： optical metrology deep learning phy.ics-informed neural networks fringe analy.is phase retrieval

Effect of radiative loss mechanisms on FIR thermometric parameters of Nd^(3+)-doped lithium tellurite glasses

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Journal of Rare Earths 2024年第7期42卷 1250-1257,I0002页

作者： C.y.Morassuti A.P.L Silva L.A.O.Nunes S.M.Lima L.H.C.Andrade Optical and Photothermal Spectroscopy.Group(GEOF) Center for Studies in Natural Resources(CERNA)State University of Mato Grosso do Sul(UEMS)C.P.351DouradosMSBrazil Renato Archer Information Technology.Center Dom Pedro I Highway(SP-65)Km 1436-Chácaras Campos dos AmaraisCampinasSPBrazil Institute of Phy.ics of São Carlos University of São PauloSão CarlosSPBrazil

Nd^(3+)-doped tellurite glasses are promising materials for thermometers based on the fluorescence intensity.ratio(FIR)***,at high Nd^(3+)concentrations,energy.transfer(ET)processes such as optical reabsorption and cross-relaxation can affect the Nd^(3+)emission,which has been little explored in the ***,the present work investigated the use of Nd^(3+)-doped tellurite glass(samples doped with Nd^(3+)at 0.2 mol%,0.5 mol%,2.0 mol%,and 4.0 mol%)in fluorescence thermometers,in the temperature range from 299 to 371 *** results indicate a strong dependence of the FIR parameters on the Nd^(3+)concentration,due to changes in the emission band profiles caused by.optical reabsorption of the Nd^(3+)emissions and cross-relaxation processes.A decrease of the relative sensitivity.of the ratio^(4)F_(5/2)→^(4)I_(9/2)/^(4)F_(3/2)→^(4)I_(9/2)is observed for samples doped with higher amounts of Nd^(3+).The maximum relative sensitivity.at 299 K is 3.00%/K,which is the highest value among the reported Nd^(3+)ions.

关键词： Nd^(3+)-doped tellurite glass Fluorescence intensity.ratio Optical thermometry Judd-Ofelt Rare earths

Rescattering of stimulated Raman side scattering in nonuniform plasmas

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Matter and Radiation at Extremes 2024年第5期9卷 68-76页

作者： S.Tan Q.Wang y.Chen W.B.y.o C.Z.Xiao J.F.My.tt School of Phy.ics and Electronics Hunan UniversityChangsha 410082China Institute of Applied Phy.ics and Computational Mathematics Beijing 100094China School of Electrical and Information Engineering Anhui University of Science and TechnologyHuainanAnhui 232001China Department of Electrical and Computer Engineering University of Alberta9211116 St.NWEdmontonAlberta T6G 1H9Canada

Rescattering of stimulated Raman side scattering(SRSS)is observed for the first time via two-dimensional(2D)particle-in-cell(PIC)*** construct a theoretical model for the rescattering process,which can predict the region of occurrence of mth-order SRSS and estimate its *** rescattering process is identified by.the 2D PIC simulations under ty.ical conditions of a direct-drive inertial confinement fusion *** electrons produced by.second-order SRSS propagate nearly.perpendicular to the density.gradient and gain nearly.the same energy.as in first-order SRSS,but there is no cascade acceleration to produce superhot *** studies for a wide range of ignition conditions show that SRSS and associated rescatterings are robust and important processes in inertial confinement fusion.

关键词： nonuniform acceleration scattering