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Practitioner Perspectives on the current Status of Agriculture Education in the United States

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Agricultural Sciences in china 2004年第10期3卷 795-800页

作者： Victor c x wang california State University Long Beach CA USA

For modern nations, a healthy agricultural sector provides the necessary foundation for the economic growth and social progress that enhance their citizens’ quality of life. Historically, agriculture education has been a dynamic and growing facet of career and technical education in the United States. currently, however, public policy and support for agriculture education is negatively impacted by a national attitude that devalues agriculture education and perceives it as less desirable than a four-year college degree. This paper considers the history, scope, and current status of agriculture education in the context of increasing worldwide demand for agricultural products and rapidly changing technology.

关键词： Status Evolution Perceptions career and technical education Agriculture education Legislation

BRIGHT LONG AFTERGLOW PHOSPHOREScENcE GLASS MADE OF SrAl_(2)O_(4): Eu^(2+), Dy^(3+) AND GLASS FRITS

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Acta Metallurgica Sinica(English Letters) 2005年第6期18卷 736-740页

作者： x. Y. Zhang Z. F. cao L.P. Lu Z.H. Bai W.Z. wang x. c. wang Department of Materials Science and Engineering Changchun University of Science and Technology Changchun 130022 China

Bright long afterglow phosphorescence glasses were prepared by using SrAl2O4： Eu^2＋, Dy^3＋ phosphors and suitable glass frits together. The SrAl2O4： Eu^2＋, Dy^3＋ phosphors were initially prepared by the solid reaction method. Three kinds of glass frits were prepared to match the SrAl2O4： Eu^2＋, Dy^3＋ phosphors. Effects of the compositions of the glass frits, the ratios of the phosphors to the frits us well us the firing temperature and firing times on the properties of the samples were discussed. xRD analysis indicated the samples exhibited the typical diffraction peaks of SrAlwO4： Eu^2＋, Dy^3＋. The emission spectra of the samples showed broad bands peaking at *** excitation spectra of the samples showed broad bands ranging from 300 to 480hm. These are believed due to the 5d4f-4f transitions of Eu^2＋ in the SrAl2O4： Eu^2＋, Dy^3＋ phosphors. The afterglow luminescence of the samples excited by a 40W fluorescence lamp for 30min can be observed in the dark for more lOh with the naked eyes. It can find wide applications in many fields.

关键词： long afterglow phosphorescence glass StAl2O4 :Eu^2+ Dy^3+,glass frit

Nodal superconducting gap in LiFeP revealed by NMR:contrast with LiFeAs

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chinese Physics B 2021年第4期30卷 113-118页

作者： A F Fang R Zhou H Tukada J Yang Z Deng x c wang c Q Jin Guo-Qing Zheng Department of Physics Beijing Normal UniversityBeijing 100875China Institute of Physics Chinese Academy of Sciencesand Beijing National Laboratory for Condensed Matter PhysicsBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China Department of Physics Okayama UniversityOkayama 700-8530Japan

Identifying the uniqueness of FeP-based superconductors may shed new lights on the mechanism of superconductivity in ***,we report nuclear magnetic resonance(NMR) studies on LiFeP and LiFeAs which have the same crystal structure but different pnictogen *** NMR spectrum is sensitive to inhomogeneous magnetic fields in the vortex state and can provide the information on the superconducting pairing symmetry through the temperature dependence of London penetration depth λ_(L).We find that λ_(L) saturates below T~0.2 T_(c) in LiFeAs,where T_(c) is the superconducting transition temperature,indicating nodeless superconducting ***,by using a two-gaps model,we simulate the temperature dependence of λ_(L) and obtain the superconducting gaps of LiFeAs,as Δ_(1)=1.2 kB T_(c) and Δ_(2)=2.8 k_(B)T_(c),in agreement with previous result from spin-lattice *** LiFeP,in contrast,λ_(L) does not show any saturation down to T~0.03 T_(c),indicating nodes in the superconducting gap ***,we demonstrate that strong spin fluctuations with diffusive characteristics exist in LiFeP,as in some cuprate high temperature superconductors.

关键词： iron-based superconductor nuclear magnetic resonance superconducting pairing symmetry spin fluctuations

Effects of chemical pressure on diluted magneticsemiconductor(Ba,K)(Zn,Mn)_2As_2

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chinese Physics B 2019年第5期28卷 288-292页

作者： Y Peng S Yu G Q Zhao W M Li J F Zhao L P cao x c wang Q Q Liu S J Zhang R Z Yu Z Deng x H Zhu c Q Jin college of Materials Science & Engineering Sichuan University Beijing National Laboratory for condensed Matter Physics and Institute of Physics Chinese Academy of Sciences School of Physics University of Chinese Academy of Sciences collaborative Innovation center of Quantum Matter

chemical pressure induced by iso-valent doping has been widely employed to tune physical properties of materials. In this work, we report effects of chemical pressure by substitution of Sb or P into As on a recently discovered diluted magnetic semiconductor(Ba,K)(Zn,Mn)_2 As_2, which has the record of reliable curie temperature of 230 K due to independent charge and spin doping. Sb and P are substituted into As-site to produce negative and positive chemical pressures, respectively.x-ray diffraction results demonstrate the successful chemical solution of dopants. Magnetic properties of both K-underdoped and K-optimal-doped samples are effectively tuned by Sb-and P-doping. The Hall effect measurements do not show decrease in carrier concentrations upon Sb-and P-doping. Impressively, magnetoresistance is significantly improved from7% to 27% by only 10% P-doping, successfully extending potential application of(Ba,K)(Zn,Mn)_2 As_2.

关键词： chemical pressure (Ba,K)(Zn,Mn)2As2 diluted magnetic semiconductor iso-valent doping

STcF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov x.c.Ai L.P.An R.Aliberti Q.An x.Z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko Z.H.Bu F.M.cai H.cai J.J.cao Q.H.cao x.cao Z.cao Q.chang K.T.chao D.Y.chen H.chen H.x.chen J.F.chen K.chen L.L.chen P.chen S.L.chen S.M.chen S.chen S.P.chen W.chen x.chen x.F.chen x.R.chen Y.chen Y.Q.chen H.Y.cheng J.cheng S.cheng T.G.cheng J.P.Dai L.Y.Dai x.c.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.Z.Ding L.Y.Dong W.H.Dong V.Druzhinin D.S.Du Y.J.Du Z.G.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang Z.J.Fang G.Fedotovich c.Q.Feng x.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.S.Ge c.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.c.Gui A.Q.Guo F.K.Guo J.c.Guo J.Guo Y.P.Guo Z.H.Guo A.Guskov K.L.Han L.Han M.Han x.Q.Hao J.B.He S.Q.He x.G.He Y.L.He Z.B.He Z.x.Heng B.L.Hou T.J.Hou Y.R.Hou c.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu x.H.Hu Y.c.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang x.T.Huang x.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia Z.K.Jia H.B.Jiang J.Jiang S.Z.Jiang J.B.Jiao Z.Jiao H.J.Jing x.L.Kang x.S.Kang B.c.Ke M.Kenzie A.Khoukaz I.Koop E.Kravchenko A.Kuzmin Y.Lei E.Levichev c.H.Li c.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li S.Li T.Li W.J.Li x.Li x.H.Li x.Q.Li x.H.Li Y.Li Y.Y.Li Z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.Z.Liao Y.Liao c.x.Lin D.x.Lin x.S.Lin B.J.Liu c.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu x.Liu Y.W.Liu Y.Liu Y.L.Liu Z.Q.Liu Z.Y.Liu Z.W.Liu I.Logashenko Y.Long c.G.Lu J.x.Lu N.Lu Q.F.Lü Y.Lu Y.Lu Z.Lu P.Lukin F.J.Luo T.Luo x.F.Luo Y.H.Luo H.J.Lyu x.R.Lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko Z.x.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova x.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng x.Y.Peng x.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian c.F.Qiao J.J.Qin J.J.Qin L.Q.Qin x.S.Qin T.L.Qiu J.Rademacker c.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia cAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom central china Normal University Wuhan 430079China central South University Changsha 410083China china University of Geosciences Wuhan 430074China china University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangzhou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STcF)is an electron–positron collider proposed by the chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STcF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPcII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STcF project in china is under development with an extensive R&D *** document presents the physics opportunities at the STcF,describes conceptual designs of the STcF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STcF detector conceptual design

The effect of V dopants on the properties of LiFeAs

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The effect of V dopants on the properties of LiFeAs

Superconductivity Observed in Tantalum Polyhydride at High Pressure

中国晶体学会第六届学术年会暨会员代表大会（极端条件晶体材料分会）

作者： x.c.wang L.Y.xing x.Shi P.Richard H.Ding c.Q.Jin The institute of Physics Chinese Academy of Science

"111"iron based superconductors have been studied extensively and the 3d-transition metals,such as co,Ni and cu,were used as dopants to study their doping effects on the superconductivity(1-4).Here we report the synth...

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chinese Physics Letters 2023年第5期40卷 90-93页

作者：何鑫张昌玲李芷文张思佳闵保森张俊卢可赵建发史鲁川彭毅望贤成冯少敏宋静王鲁红 V.B.Prakapenka S.chariton 刘浩哲靳常青 Beijing National Laboratory for condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China Shanghai Advanced Research in Physical Sciences Shanghai 201203China Department of Geology University of Illinois at Urbana ChampaignUrbanaIllinois 61801USA center for Advanced Radiations Sources University of ChicagoChicagoIllinois 60637USA center for High Pressure Science&Technology Advanced Research Beijing 100094China

We report experimental discovery of tantalum polyhydride *** was synthesized under highpressure and high-temperature conditions using diamond anvil cell combined with in situ high-pressure laser heating *** superconductivity was investigated via resistance measurements at *** highest superconducting transition temperature T_(c)was found to be~30 K at 197 GPa in the sample that was synthesized at the same pressure with~2000 K *** transitions are shifted to low temperature upon applying magnetic fields that support the superconductivity *** upper critical field at zero temperatureμ_0H_(c2)(0)of the superconducting phase is estimated to be~20 T that corresponds to Ginzburg-Landau coherent length~40 *** results suggest that the superconductivity may arise from 143d phase of TaH_(3).It is,for the first time to our best knowledge,experimental realization of superconducting hydrides for the VB group of transition metals.

关键词： hydride resistance superconductivity

Preclinical evaluation of the safety and pathogenicity of a live attenuated recombinant influenza A/H7N9 seed strain and corresponding MF59-adjuvanted split vaccine

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Preclinical evaluation of the safety and pathogenicity of a ...

THE PRELIMINARY DESIGN OF LOW-LEVEL WINDSHEAR SIMULATION SYSTEM ON GROUND

浙江省免疫学会第十次学术大会

作者： Huilin Ou Wei Yao Nanping Wu Frederick x.c.wang chengcong Han xiangyun Lu Dongshan Yu Haibo Wu Linfang cheng Honglin chen Hangping Yao Lanjuan Li State Key Laboratory for Diagnosis and Treatment of Infectious Diseases Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalSchool of MedicineZhejiang University

In early spring 2013,human infections with a novel avian influenza A(H7 N9) virus in Eastern china raised concerns of a new influenza *** address these concerns,the development of a safe and effective H7 N9 influenza vaccine is urgently *** this end,we generated candidate H7 N9 vaccine strains using reverse genetics,with the hemagglutinin and neuraminidase genes derived from a human H7 N9 virus and the remaining genes from the PR8 virus,which grows well in ***,our research was conducted to evaluate recombinant clones in BALB/c mice and ferrets to determine whether the recombinants displayed the characteristics desirable in a vaccine strain,including lower virulence and *** established that the virulence and transmissibility of the recombinant H7 N9 vaccine seed strain were decreased as compared to wild-type H7 N9 virus,to levels comparable with *** the seed virus,we produced a monovalent split influenza A(H7 N9) MF59-adjuvanted vaccine that was immunogenic in *** assess the safety of our H7 N9 vaccine,we performed acute toxicity,repeated dose toxicity and active systemic anaphylaxis ***,the vaccine candidate showed no toxicological findings of significance at levels greatly in excess of those proposed for clinical *** conclusion,the comprehensive preclinical evaluation program conducted in the course of the development of an intramuscular MF59-adjuvanted split influenza vaccine documented the safety and immunogenicity of the recombinant H7 N9 vaccine virus strain and safety of the vaccine in animal *** human testing of the MF59-adjuvanted H7 N9 split vaccine will be needed to determine whether it could represent a candidate vaccine in a clinical context

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电光与控制 1991年第S1期 54-65页

作者： x. c. Ding wang Yongsheng Zhao quan Sun Longhe Zhou Shenghuai(The Electro-Optical Equipment Instiute of Aerospace Ministry,471009,P. O. Box 017 Luoyang, P. R. china)

Infrared windshear prediction is one of airborne LLWS remote sensing *** it is applied,the prediction system should be tested on ground to prove it’s *** LLWS simulation system isused to check whether the infrared windshear prediction system operate *** this paper,according tothe requirement of the LLWS detection and the characteristic of LLWS＂source＂,we will analyze the theoryof the LLWS simulation and give a basic description of the system construction in which we pay more atten-tion to optical simulation and flight *** optical simulation is used to simulate the atmospherc in-frared radiation as a LLWS *** flight simulation is used to simulate the aircraft airspeed,pitch,alti-tude etc..The works presented here are necessary for the LLWS infrared prediction system.

关键词： Low-level windshear Infrared atmosphere detection Simulation