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PHOTOELECTROCHEmICAL AnD DIELECTRIC PROPERTIEs OF PAInTED IROn OXIDE ELECTRODEs

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science China Chemistry 1984年第3期27卷 225-235页

作者：柳昌义,蔡生民,s.m.wilhelm,s.D.KAPUsTA,A.viehbeck,normanhackerm.n Department of Chemistry shandong University Jinan Department of Chemistry Peking University Battelle Houston Research Centre U.s.A. Department of Chemistry Rice University Houston U.s.A Department of Chemistry Rice University Houston U.s.A Department of Chemistry Rice University Houston U.s.A

Polycrystalline iron oxide electrodes made by thermal decomposition of Fe (C8H15O2)3[Iron （Ⅲ） 2-ethylhexanoate] on Fe, Ti and Pt substrates were characterized with respectto their dielectric and photoelectrochemical properties. The thermal decomposition process pro-duces a stable ferric oxide lattice （Fe2O3） possessing n-type semiconductor characteristics. Thephotoelectrochemical behavior of painted electrodes was shown to be equivalent to iron oxideproduced by thermal or anodic oxidation. From A. C. impedance measurements, an equivalentcircuit of the interface was constructed, that provided values for the space charge capacitanceand resistance. With the equivalent circuit, impedance measurements can be used to ascertainrapidly the relative photo-efficiencies of photoanodes.

关键词： FFE PHOTOELECTROCHEmICAL AnD DIELECTRIC PROPERTIEs OF PAInTED IROn OXIDE ELECTRODEs

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电解池电阻和容抗的快速测定仪

物理化学学报 1986年第1期2卷 22-29页

作者：蔡生民柳昌义 s.m.wilhelm n.hackerm.n 美国Rice大学化学系北京大学化学系美国Battelle休斯敦研究中心山东大学化学系

利用锁定放大器,恒电势仪,压控频率正弦波信号发生器等组装成电解池电阻和容抗的快速测定仪。可以快速地自动测是和绘出阻抗谱图和电阻/容抗~时间图。采用微小恒定振幅正弛交流电流(<10μA)作为微扰,数据可能较为可靠。给出了线路及所... 详细信息

利用锁定放大器,恒电势仪,压控频率正弦波信号发生器等组装成电解池电阻和容抗的快速测定仪。可以快速地自动测是和绘出阻抗谱图和电阻/容抗~时间图。采用微小恒定振幅正弛交流电流(mol LnasO溶液中及1mol LnasO被正庚醇饱和的溶液中的微分电容~电势数值。证明仪器工作良好。另外,从实验数据和理论分析,均表明***的被广泛引用的有关经典数据有误。本文做了修正。还测定了半导体氧化铁电极在光照下黑暗中的阻抗谱图和氧化银电极充电和停止充电后开路下的电阻~时间图,显示了仪器在电化学研究中利用的可能性。

关键词：容抗电阻电阻抗电解池电解槽电极电势锁定放大器氧化银电极充电电流交流电流硫酸亚汞电极恒电势阻抗谱图测定仪

Investigation of decay modes of superheavy nuclei

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nuclear science and Techniques 2021年第11期32卷 146-162页

作者： H.C.manjunatha n.sowmya P.s.Damodara Gupta K.n.sridhar A.m.nagaraja L.seenappa s.alfred Cecil Raj Department of Physics Government College for WomenKolarKarnataka 563101India Department of Physics Government First Grade CollegeKolarKarnataka 563101India Department of Physics St.Joseph’s CollegeAffiliated to Bharathidasan UniversityTiruchirappalliTamil NaduIndia

A detailed investigation of different decay modes,namely alpha decay,beta decay,cluster decay including heavy particle emission(Z_(c)>28),and spontaneous fission,was carried out,leading to the identification of new cluster and beta-plus emitters in superheavy nucle with 104≤Z≤*** the first time,we identified around20 beta-plus emitters in superheavy ***-particle radioactivity was observed in superheavy elements of atomic number in the range 116≤Z≤126.^(292-293)Og were identified as ^(86)Kr emitters,and ^(298)122 and ^(300)122 were identified as ^(94)Zr emitters,whereas heavy-particle radioactivity from ^(91)Y was also observed in ^(299)***,the nuclei ^(300)124 and ^(306)126 exhibit ^(96)mo *** reported regions of beta-plus and heavyparticle radioactivity for superheavy nuclei are stronger than those for alpha *** identified decay modes for superheavy nuclei are presented in a *** study is intended to serve as a reference for identifying possible decay modes in the superheavy region.

关键词： Alpha decay Beta decay Heavy-particle radioactivity Branching ratios

Enhancing the stability and ecological safety of mass-reared transgenic strains for field release by redundant conditional lethality systems

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Insect science 2016年第2期23卷 225-234页

作者： alfred m. Handler UsDA Agricultural Research Service Center for Medical Agricultural and Veterinary Entomology Gainesville FL 32608 USA

The genetic manipulation of agriculturally important insects now allows the development of genetic sexing and male sterility systems for more highly efficient biologically-based population control programs, most notably the sterile Insect Technique （sIT）, for both plant and animal insect pests. Tetracycline-suppressible （Tet-off） conditional lethal systems may function together so that transgenic strains will be viable and fertile on a tetracycline-containing diet, but female-lethal and male sterile in tetracycline-free condi- tions. This would allow their most efficacious use in a unified system for sterile male-only production for sIT. A critical consideration for the field release of such transgenic insect strains, however, is a determination of the frequency and genetic basis of lethality revertant survival. This will provide knowledge essential to evaluating the genetic stability of the lethality system, its environmental safety, and provide the basis for modifications ensur- ing optimal efficacy. For Tet-off lethal survival determinations, development of large-scale screening protocols should also allow the testing of these modifications, and test the ability of other conditional lethal systems to fully suppress propagation of rare Tet-off survivors. If a dominant temperature sensitive （DTs） pupal lethality system proves efficient for sec- ondary lethality in Drosophila, it may provide the safeguard needed to support the release of sexing/sterility strains, and potentially, the release of unisex lethality strains as a form of genetic male sterility. should the DTs Prosβ21 mutation prove effective for redundant lethality, its high level of structural and functional conservation should allow host-specific cognates to be created for a wide range of insect species.

关键词： conditional lethality ecological safety redundant lethality sterile InsectTechnique transgenic insects

strategies and challenges to increase the precision in feeding zinc to monogastric livestock

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Animal nutrition 2017年第2期3卷 103-108页

作者： Daniel Brugger wilhelm m.Windisch TUm school of Life sciences Weihenstephan Technical University of Munich

Practical diets for monogastric livestock must be supplemented with zinc(Zn) due to their high contents of antagonistic substances like phytates. Current feeding recommendations include quite generous safety margins because of uncertainties regarding the gross Zn requirements under varying rearing ***, the use of pharmacological Zn doses to stabilise animal performance and wellbeing is widespread. Taken together, modern diets for pigs and poultry contain considerably more Zn than necessary to meet animal requirements, which is associated with concerns related to the environment as well as animal and consumer safety. Therefore, European authorities most recently reduced the allowed upper limits for Zn in complete feed. To maintain animal productivity and wellbeing while reducing the Zn load in complete feed, all measures that stabilize feed Zn bioavailability must be applied. most importantly, reliable information on the gross Zn requirement under practical conditions must be provided, considering the bioavailability of native or supplemented feed Zn, antagonisms with dietary factors as well as the physiological status of the animal.

关键词： Zinc Requirement Recommendation Pharmacological Pig Poultry

Emerging 2D magnetic states in a graphene-based monolayer of EuC_(6)

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nano Research 2022年第1期15卷 408-413页

作者： Ivan s.sokolov Dmitry V.Averyanov Fabrice wilhelm Andrei Rogalev Oleg E.Parfenov Alexander n.Taldenkov Igor A.Karateev Andrey m.Tokmachev Vyacheslav G.storchak national Research Center“Kurchatov Institute” Kurchatov Sq.1Moscow 123182Russia EsRF-The European synchrotron CS 4022038043 Grenoble Cedex 9France

Recent discoveries of intrinsic two-dimensional(2D)magnets open up vast opportunities to address fundamental problems in condensed matter physics,giving rise to applications from ultra-compact spintronics to quantum *** ever-growing material landscape of 2D magnets lacks,however,carbon-based systems,prominent in other areas of 2D *** measurements of the Eu/graphene compound-a monolayer of the EuC_(6) stoichiometry-reveal the emergence of 2D ferromagnetism but detailed studies of competing magnetic states are still ***,we employ element-selective X-ray absorption spectroscopy(XAs)and magnetic circular dichroism(XmCD)to establish the magnetic structure of monolayer *** system exhibits the anomalous Hall effect,negative magnetoresistance,and magnetization consistent with a ferromagnetic state but the saturation magnetic moment(about 2.5/%/Eu)is way too low for the half-filled f-shells of Eu^(2+)*** XAs/XmCD studies at the Eu L3 absorption edge probe the EuC6 magnetism in high fields and reveal the nature of the missing magnetic *** results are set against XmCD studies in Eu/silicene and Eu/germanene to establish monolayer EuC6 as a prominent member of the family of Eu-based 2D magnets combining the celebrated graphene properties with a strong magnetism of europium.

关键词： two-dimensional(2D)ferromagnetism graphene EuC_(6) X-ray magnetic circular dichroism(XmCD) monolayer

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涂敷氧化铁电极的光电化学和介电性质的研究

中国科学:化学 1983年第11期 963-971页

作者：柳昌义,蔡生民,s. m. wilhelm,s. D. Kapusta,A. viehbeck,norman hackerm.n 山东大学化学系北京大学化学系 Battele Houston Research Center U.s.A 美国休斯敦Rice大学化学系美国休斯敦Rice大学化学系美国休斯敦Rice大学化学系济南

本文利用涂敷Fe(C8H15O2)3[2-乙基己醇酸铁（Ⅲ）]于Fe,Ti,Pt金属基片上,热氧化分解制成多晶氧化铁电极。对其介电、光电化学行为的测定,表明它们与利用热氧化法以及阳极氧化法所制成的多晶氧化铁电极的性能相似,具有n型半导体的特性。... 详细信息

本文利用涂敷Fe(C8H15O2)3[2-乙基己醇酸铁（Ⅲ）]于Fe,Ti,Pt金属基片上,热氧化分解制成多晶氧化铁电极。对其介电、光电化学行为的测定,表明它们与利用热氧化法以及阳极氧化法所制成的多晶氧化铁电极的性能相似,具有n型半导体的特性。借助于交流阻抗的快速测定,并且选择了一种等效电路,测定了空间电荷区电阻、电容的变化。这种方法可以用来监测光电极的相对光效率。

关键词：电极表面电阻空间电荷区电阻抗电性介电性质光电化学氧化铁涂敷

Deep learning for visualization and novelty detection in large X-ray diffraction datasets

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npj Computational materials 2021年第1期7卷 942-947页

作者： Lars Banko Phillip m.maffettone Dennis naujoks Daniel Olds alfred Ludwig materials Discovery and Interfaces Institute for MaterialsRuhr University BochumBochumGermany national synchrotron Light source II Brookhaven National LaboratoryUptonNYUSA ZGH Center for Interface-Dominated High Performance MaterialsRuhr University BochumBochumGermany

We apply variational autoencoders(VAE)to X-ray diffraction(XRD)data analysis on both simulated and experimental thin-film *** show that crystal structure representations learned by a VAE reveal latent information,such as the structural similarity of textured diffraction *** other artificial intelligence(AI)agents are effective at classifying XRD data into known phases,a similarly conditioned VAE is uniquely effective at knowing what it doesn’t know:it can rapidly identify data outside the distribution it was trained on,such as novel phases and *** capabilities demonstrate that a VAE is a valuable AI agent for aiding materials discovery and understanding XRD measurements both‘on-the-fly’and during post hoc analysis.

关键词： VAE uniquely latent

single zircon evaporation ages: Evidence for the mesoproterozoic crust in the southeastern nigerian basement complex

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Chinese Journal Of Geochemistry 2012年第1期31卷 48-54页

作者： Ekere E.Ukwang Barth n.Ekwueme alfred Krner Department of Geology University of CalabarEtta AgborP.M.B.1115 CalabarNigeria Institut fur Geowissenschaften Universitat MainzGermany

The Ukwortung area of the Obudu Plateau exposes high-grade metamorphic rocks of upper amphibolite to granulite facies. Zircon grains from three locations of southwest Obudu Plateau were dated by the Pb-Pb dating method. This single zircon radiometric dating method confirms the occurrence of mesoproterozoic crust in the southeastern nigeria basement complex. The pyroxene gneiss (granulite facies) sample from Biereberi near Ukpe yielded a mean age of 2061.4±0.4 ma, suggesting the presence of Paleoproterozoic crust. The combined 207Pb/206Pb ratios from the garnet-biotite gneiss in the area gave a mean age of 1794.4±0.4 ma. This further confirms the pres-ence of Paleoproterozoic crustal components within the Obudu Plateau. The mesoproterozoic (1548.8±0.5 ma) and neoproterozoic (619.8±0.9 ma) ages were obtained from two populations of zircon grains from the leucogranite in Okordem, southwest Obudu. These "signatures" collaborate the occurrence of mesoproterozoic ages in the Afar region and Cameroon basements along with the southeastern nigerian basement complex, constituting the major portion of the West Central African mobile belt. The zircon age of 1794.4±0.4 ma may probably be the maximum depositional age of the meta-sediment (garnet-biotite gneiss) and the age of 1548.8±0.5 ma may be interpreted as the time of emplacement of the granitoid. The neoproterozoic age (619.8±0.9 ma) probably records the metamorphic event that was prevalent during the Pan-African period and thus affected the area.

关键词：单颗粒锆石平均年龄地壳成分中元古代尼日利亚地下室东南部证据