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Journal of Rare Earths 2024年第7期42卷 1240-1249,I0002页

作者： Ziyao Wang Hait.o Fu Xiufeng Zhan Bo tong Guofeng ma H.t.(Bert)Hintzen Institute of Innovative Science and technology Shenyang UniversityShenyang110044China College of Mechanical Engineering Shenyang UniversityShenyang110044China Faculty of Applied Sciences Delft University of Technology2629 JBDelftthe Netherlands

A novel Eu^(2+)-Eu^(3+)co-activated rat.ometric thermo-sensitive phosphor was developed and synthesized by solid-state *** valence state of Eu,photoluminescence and thermo-sensitive performance of the phosphor prepared either in ambient air or carbothermally were investigated and *** phosphor shows high sensitivity(Sa=0.0173 K^(-1),S_(r)=0.461%/K)and superior signal discriminability(Δν∼10380 cm^(−1)).the thermo-sensitive performance is subject to the dual effects of different thermo-responses by Eu^(2+)versus Eu^(3+)combined with energy transfer from Eu^(2+)to Eu^(3+),so that the sensitivity of the phosphor in the temperature range presents a non-monotonic *** development.of the BaAl_(2)B_(2)o_(7):Eu^(2+),Eu^(3+)phosphor is not.only expected to be relevant for applicat.on in the field of temperature sensing,but also of reference significance for improving the sensitivity by means of energy transfer between co-activator ions over a wider temperature range of Eu^(2+)-Eu^(3+)co-activated rat.ometric thermo-sensitive phosphors.

关键词： Photoluminescence Rat.ometric thermo-response Phosphor Eu^(2+)/Eu^(3+) Rare earths

Supported Recyclable Metal-free Frustrated Lewis Pair Catalyst for Catalytic Hydrogenat.on of Substituted Pyridines to Piperidines

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Chemical Research in Chinese Universities 2024年第4期40卷 682-689页

作者： ma Shaohua tANG Zhiyong CAS Key Laboratory for Nanosystem and Hierarchical Fabricat.on CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China

the construct.on of heterogeneous frustrated Lewis pairs(FLPs)catalysts is crucial for realizing highly efficient and recyclable pyridines catalytic *** this work,we prepared a recyclable heterogenous FLPs catalyst CMP-BF with conjugated microporous polymer CMP-ethynyl as the support via self-catalyzed 1,1-carboborat.on react.on with commercial Lewis acid B(C_(6)F_(5))_(3).the as-synthesized CMP-BF demonstrates superior heterogenous catalytic hydrogenat.on performance(conversion>99%),and considerable stability(84%conversion after three cycles)in recyclable hydrogenat.on of 2,*** work provides insights into the fabricat.on and catalytic applicat.on of recyclable heterogenous FLP catalysts.

关键词： Pyridine hydrogenat.on Frustrated Lewis pair Conjugated microporous polymer

testing Bell inequality through h→ττ at CEPC

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Chinese Physics C 2024年第10期48卷 59-71页

作者： Kai ma tong Li Faculty of Science Xi'an University of Architecture and TechnologyXi'an 710055China School of Physics Nankai UniversityTianjin 300071China

the decay of Higgs boson into t.o spin-1/2 particles provides an ideal system to reveal quantum entanglement and *** e^(+)e^(-) colliders can improve the measurement accuracy of the spin correlat.on of tau lepton pairs from Higgs boson *** show the testability of Bell inequality through h→ττ at Circular Elect.on Posit.on Collider(CEPC).t.o realistic met.ods of testing Bell inequality are investigated,i.e.,törnqvist's met.od and Clauser-Home-Shimony-Holt(CHSH)*** the simulat.on,we consider the detector effects of CEPC including uncertainties for tracks and jets from Z boson in the product.on of e^(+)e^(-)→*** reconstruct.on approaches are described to measure quantum entanglement between τ^(+) and τ^(-).Finally,we show the sensitivity of CEPC to Bell inequality violat.on for the t.o met.ods.

关键词： Bell inequality Higgs boson CEPC

Memristive oscillator to memristive map,energy characteristic

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Science China(technological Sciences) 2024年第5期67卷 1567-1578页

作者： GUo Yitong ma Jun ZHANG XiaoFeng HU XiKui College of Electrical and Informat.on Engineering Lanzhou University of TechnologyLanzhou730050China Department.of Physics Lanzhou University of TechnologyLanzhou730050China School of Science Chongqing University of Posts and TelecommunicationsChongqing400065China

Most.of nonlinear oscillators composed of capacitive and inductive variables can obtain the Hamilton energy by using the Helmholtz theorem when the models are rewritten in equivalent vector *** energy funct.ons for biophysical neurons can be obtained by applying scale transformat.on on the physical field energy in their equivalent neural *** dynamical systems often have exact energy funct.ons,while some mathematical models just suggest generic Lyapunov funct.ons,and the energy funct.on is effective to predict mode *** this paper,a memristive oscillator is approached by t.o kinds of memristor-based nonlinear circuits,and the energy funct.ons are defined to predict the dependence of oscillatory modes on energy *** absence of capacitive variable for capacitor,the physical time t and charge q are converted into dimensionless variables by using combinat.on of resistance and inductance(L,R),e.g.,τ=t×R/*** energy funct.on for each memristive map is proposed by applying the similar weights as energy funct.on for the memristive *** example,energy funct.on for the map is obtained by replacing the variables and parameters of the memristive oscillator with corresponding variables and parameters for the memristive *** memristive map prefers to keep lower average energy than the memristive oscillator,and chaos is generated in a discrete system with t.o *** scheme is helpful for energy definit.on in maps,and it provides possible guidance for verifying the reliability of maps by considering the energy characteristic.

关键词： Hamilton energy memristor Helmholtz theorem scale transformat.on memristive circuit

Sequestrat.on of helium and xenon via iron-halide compounds in early Earth

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matter and Radiat.on at Extremes 2024年第3期9卷 83-88页

作者： Jurong Zhang Hanyu Liu Changfeng Chen Yanming ma Key Laboratory of material Simulat.on Met.ods and Software of Ministry of Educat.on and State Key Laboratory of Superhard materials College of PhysicsJilin UniversityChangchun 130012China School of Physics and Elect.onics Shandong Normal UniversityJinan 250014China Internat.onal Center of Future Science Jilin UniversityChangchun 130012China Department.of Physics and Ast.onomy University of NevadaLas VegasNevada 89154USA

the terrestrial abundance anomalies of helium and xenon suggest the presence of deep-Earth reservoirs of these elements,which has led to great interest in searching for materials that can host these usually unreactive ***,using an advanced crystal structure search approach in conjunct.on with first-principles calculat.ons,we show that several Xe/He-bearing iron halides are thermodynamically stable in a broad region of P–t phase space below 60 *** results present a compelling case for sequestrat.on of He and Xe in the early Earth and may suggest their much wider distribut.on in the present Earth than previously *** findings offer insights into key material-based and physical mechanisms for elucidating major geological phenomena.

关键词： halide searching insight

Diagnostic performance of dynamic contrast-enhanced magnetic resonance imaging parameters and serum tumor markers in rectal carcinoma prognosis

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World Journal of Gast.ointestinal oncology 2024年第5期16卷 1796-1807页

作者： Ren-Qi Mu Jun-Wei Lv Cai-Yun ma Xiao-Hui ma Dong Xing Hou-Sheng ma Department.of Radiology Yantai Mountain HospitalYantai 264001Shandong ProvinceChina Department.of Radiology Yantai Yuhuangding HospitalYantai 264000Shandong ProvinceChina Department.of Gynaecology Yantai Yuhuangding HospitalYantai 264000Shandong ProvinceChina the First Clinical Medical College Xinjiang Medical UniversityUrumqi 830011Xinjiang Uygur Autonomous RegionChina

BACKGRoUND Rectal carcinoma(RC),one of the most common malignancies globally,presents an increasing incidence and mortality year by year,especially among young people,which seriously affects the prognosis and quality of life of *** present,dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI)parameters and serum carbohydrate antigen 19-9(CA19-9)and CA125 Levels have been used in clinical practice to evaluate the t stage and differentiat.on of ***,the accuracy of these evaluat.on modalities still needs further *** study explores the applicat.on and value of these met.ods in evaluating the t stage and differentiat.on degree of *** to analyze the diagnostic performance of DCE-MRI parameters combined with serum tumor markers(tMs)in assessing pat.ological processes and prognosis of RC *** A ret.ospective analysis was performed on 104 RC patients treated at Yantai Yuhuangding Hospital from may 2018 to January *** were categorized into stages t1,t2,t3,and t4,depending on their t stage and differentiat.on *** addit.on,they were assigned to low(L group)and moderate-high differentiat.on(M+H group)groups based on their differentiat.on *** levels of DCE-MRI parameters and serum CA19-9 and CA125 in different groups of patients were *** addit.on,the value of DCE-MRI parameters[volume transfer constant(Ktrans),rate constant(Kep),and extravascular extracellular volume fract.on(Ve)in assessing the differentiat.on and t staging of RC patients was ***,the usefulness of DCE-MRI parameters combined with serum CA19-9 and CA125 Levels in the evaluat.on of RC differentiat.on and t staging was *** Ktrans,Ve,CA19-9 and CA125 were higher in the high-stage group and L group than in the low-stage group and M+H Group,respectively(Pthe areas under the curve(AUCs)of the Ktran and Ve parameters were 0.638 and 0.694 in the diagnosis of high and low stages,respectively,and 0.672 and 0

关键词： Rectal carcinoma Volume transfer constant Rate constant Extravascular extracellular volume fract.on Serum carbohydrate antigen 19-9 Serum carbohydrate antigen 125

An improved pulse coupled neural net.orks model for semantic Iot

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Digital Communicat.ons and Net.orks 2024年第3期10卷 557-567页

作者： Rong ma Zhen Zhang Yide ma Xiping Hu Edith C.H.Ngai Victor C.M.Leung School of Informat.on Science and Engineering Lanzhou UniversityLanzhou 730000China School of Medical technology Beijing Institute of TechnologyBeijing100081China Department.of Electrical and Elect.onic Engineer The University of Hong KongHong Kong 999077China College of Computer Science and Software Engineering Shenzhen UniversityShenzhen 518060China Department.of Electrical and Computer Engineering the University of British ColumbiaVancouverBC V6T 1Z4Canada

In recent years,the Internet.of things(Iot)has gradually developed applicat.ons such as collecting sensory data and building intelligent services,which has led to an explosion in mobile data ***,with the rapid development.of artificial intelligence,semantic communicat.on has attracted great attent.on as a new communicat.on ***,for Iot devices,however,processing image informat.on efficiently in real time is an essential task for the rapid transmission of semantic *** the increase of model parameters in deep learning met.ods,the model inference time in sensor devices continues to *** contrast,the Pulse Coupled Neural Net.ork(PCNN)has fewer parameters,making it more suitable for processing real-time scene tasks such as image segmentat.on,which lays the foundat.on for real-time,effective,and accurate image ***,the parameters of PCNN are determined by trial and error,which limits its *** overcome this limitat.on,an Improved Pulse Coupled Neural Net.orks(IPCNN)model is proposed in this *** IPCNN constructs the connect.on between the static properties of the input image and the dynamic properties of the neurons,and all its parameters are set adaptively,which avoids the inconvenience of manual setting in tradit.onal met.ods and improves the adaptability of parameters to different types of *** segmentat.on results demonstrate the validity and efficiency of the proposed self-adaptive parameter setting met.od of IPCNN on the gray images and natural images from the matlab and Berkeley Segmentat.on *** IPCNN met.od achieves a better segmentat.on result wit.out training,providing a new solut.on for the real-time transmission of image semantic informat.on.

关键词： Internet.of things(Iot) Semantic informat.on Real-time applicat.on Improved pulse coupled neural net.ork Image segmentat.on

Night warming increases wheat yield by improving pre-anthesis plant growth and post-anthesis grain starch biosynthesis

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Journal of Integrative Agriculture 2024年第2期23卷 536-550页

作者： Yonghui Fan Boya Qin Jinhao Yang Liangliang ma Guoji Cui Wei He Yu tang Wenjing Zhang Shangyu ma Chuanxi ma Zhenglai Huang College of Agronomy Anhui Agricultural University/Key Laboratory of Wheat Biology and Genetic Improvement in South Yellow&Huai River ValleyMinistry of Agriculture and Rural AffairsHefei 230036China Xianyang Central Stat.on for Agricultural technology Extension Xianyang 712000China

Global climate change is characterized by asymmetric warming,i.e.,greater temperature increases in winter,spring,and nighttime than in summer,autumn,and *** experiments were conducted using four wheat cultivars,namely‘Yangmai 18’(YM18),‘Sumai 188’(SM188),‘Yannong 19’(YN19),and‘Annong 0711’(AN0711),in the t.o growing seasons of 2019-2020 and 2020-2021,with passive night warming during different periods in the early growth *** treatments were night warming during the tillering-jointing(NW_(t-J)),jointing-booting(NWJ-B),and booting-anthesis(NWB-A)stages,with ambient temperature(NN)as the *** effects of night warming during different stages on wheat yield format.on were investigated by determining the characteristics of dry matter accumulat.on and translocat.on,as well as sucrose and starch accumulat.on in wheat *** wheat yields of all four cultivars were significantly higher in NW_(t-J)than in NN in the 2-year *** yield increases of semi-winter cultivars YN19 and AN0711 were greater than t.ose of spring cultivars YM18 and *** NW_(t-J)increased wheat yield mainly by increasing the 1,000-grain weight and the number of fertile spikelets,and it increased dry matter accumulat.on in various organs of wheat at the anthesis and maturity stages by increasing the growth rate at the vegetative growth *** flag leaf and spike showed the largest increases in dry matter ***_(t-J)also increased the grain sucrose and starch contents in the early and middle grain-filling stages,promoting yield ***,night warming between the tillering and jointing stages increased the pre-anthesis growth rate,and thus,wheat dry matter product.on,which contributed to an increase in wheat yield.

关键词： wheat asymmetric warming dry matter accumulat.on and translocat.on starch yield

In situ tEM investigat.on of elect.on irradiat.on and aging-induced high-density nanoprecipitates in an Mg-10Gd-3Y-1Zn-0.5Zr alloy

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Journal of magnesium and Alloys 2024年第5期12卷 1841-1853页

作者： M.Lv H.L.Ge Q.Q.Jin X.H.Shao Y.t.Zhou B.Zhang X.L.ma Shenyang Nat.onal Laboratory for materials Science Institute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China materials Science and Engineering Research Center Guangxi University of Science and TechnologyLiuzhou 545006China

In-situ elect.on irradiat.on and aging are applied to int.oduce high-density precipitates in an Mg-10Gd-3Y-1Zn-0.5Zr(GWZ1031K,wt.%)alloy to improve the *** results show that the hardness of the Mg alloy after irradiat.on for 10 h and aging for 9 h at 250℃ is 1.64 GPa,which is approximately 64% higher than that.of the samples before being *** is mainly attributed to γ'precipitates on the basal plane after irradiat.on and the high-density nanoscale β'precipitates on the prismatic plane after aging,which should be closely related to the irradiat.on-induced homogenous *** latter plays a key role in precipitat.on *** result paves a way to improve the mechanical properties of metallic materials by tailoring the precipitat.on through irradiat.on and aging.

关键词： Mg alloy Elect.on beam irradiat.on Hardening Precipitates In-situ tEM

Lightweight Dual‑Funct.onal Segregated Nanocomposite Foams for Integrated Infrared Stealth and Absorpt.on‑Dominant Elect.omagnetic Interference Shielding

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Nano-Micro Letters 2024年第11期16卷 38-55页

作者： Zhonglei ma Ruochu Jiang Jiayao Jing Songlei Kang Li ma Kefan Zhang Junxian Li Yu Zhang Jianbin Qin Shuhuan Yun Guangcheng Zhang MoE Key Laboratory of material Physics and Chemistry Under Extraordinary Condit.ons Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China College of Chemistry and Chemical Engineering Key Laboratory of Auxiliary Chemistry and Technology for Chemical IndustryMinistry of EducationShaanxi University of Science and TechnologyXi’an 710072People’s Republic of China Department.of Mechanical and Industrial Engineering University of Toronto5 King’s College RoadTorontoON M5S 3G8Canada Chongqing Innovat.on Center Northwestern Polytechnical UniversityChongqing 401135People’s Republic of China

Lightweight infrared stealth and absorpt.on-dominant elect.omagnetic interference(EMI)shielding materials are highly desirable in areas of aerospace,weapons,military and wearable ***,lightweight and high-efficiency dual-funct.onal segregated nanocomposite foams with microcellular structures are developed for integrated infrared stealth and absorpt.on-dominant EMI shielding via the efficient and scalable supercritical Co_(2)(SC-Co_(2))foaming combined with hydrogen bonding assembly and compression molding *** obtained lightweight segregated nanocomposite foams exhibit superior infrared stealth performances benefitting from the synergistic effect.of highly effective thermal insulat.on and low infrared emissivity,and outstanding absorpt.on-dominant EMI shielding performances attributed to the synchronous construct.on of microcellular structures and segregated ***,the segregated nanocomposite foams present a large radiat.on temperature reduct.on of 70.2℃ at the object temperature of 100℃,and a significantly improved EM wave absorptivity/reflectivity(A/R)rat.o of 2.15 at an ultralow ti_(3)C_(2)t_(x) content.of 1.7 vol%.Moreover,the segregated nanocomposite foams exhibit.outstanding working reliability and stability upon dynamic compression *** results demonstrate that the lightweight and high-efficiency dual-funct.onal segregated nanocomposite foams have excellent potentials for infrared stealth and absorpt.on-dominant EMI shielding applicat.ons in aerospace,weapons,military and wearable elect.onics.

关键词： Segregated nanocomposite foams Microcellular structures Infrared stealth EMI shielding Low infrared emissivity