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Decarbonising energy: The develop.ng international activity in hydrogen technologies and fuel cells

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Journal of Energy Chemistry 2020年第12期29卷 405-415页

作者： John Meurig thomas p.ter p.Edwards p.ter J.Dobson Gari p.Owend Dep.rtment of Materials Science&Metallurgy University of CambridgeCambridge CB30FSUK King Abdulaziz City for Science and Technology(KACST)-Oxford Centre of Excellence in p.trochemicals and Inorganic Chemistry Laboratory University of OxfordOxford OX13QRUK The Queen’s College University of OxfordOxford OX14AWUK Annwvyn Solutions(Indep.ndent Consultant) BromleyKent BR13DWUK

Hydrogen technologies and fuel cells offer an alternative and imp.oved solution for a decarbonised energy *** cells are electrochemical converters;transforming hydrogen (or energy sources containing hydrogen) and oxygen directly into *** hydrogen fuel cell,invented in 1839,p.rmits the generation of electrical energy with high efficiency through a non-combustion,electrochemical p.ocess and,imp.rtantly,without the emission ofits p.int of ***,desp.te numerous efforts to exp.oit the obvious attractions of hydrogen technologies and hydrogen fuel cells,various challenges have been encountered,some of which are reviewed ***,however,given the exigent need to urgently seek low-carbon p.ths for humankind’s energy future,numerous countries are advancing the dep.oyment of hydrogen technologies and hydrogen fuel cells not only for transp.rt,but also as a means of the storage of excess renewable energy from,for examp.e,wind and solar ***,hydrogen is also being blended into the natural gas sup.lies used in domestic heating and targeted in the decarbonisation of critical,large-scale industrial p.ocesses such as steel *** briefly review sp.cific examp.es in countries such as Jap.n,South Korea and the p.op.e’s Rep.blic of China,as well as selected examp.es from Europ. and North America in the utilization of hydrogen technologies and hydrogen fuel cells.

关键词： Decarbonisation Hydrogen Energy Hydrogen Economy Fuel cells Environment Sustainability

Dikaryotization seems essential for hyp.a formation and infection of coccid in the life-cycle of Auriculoscyp.a anacardiicola

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Studies in Fungi 2020年第1期5卷 66-72页

作者： thomas A and Manimohan p Dep.rtment of Botany University of CalicutKerala673635India

Auriculoscyp.a,a monotyp.c basidiomycetous genus with *** as the only known sp.cies,is endemic to southwest India where it is seen in trip.e symbioses with a coccid and anacardiaceous trees involving interactions between three trop.ic *** p.esent study was an attemp. to verify the hyp.thesis that dikaryotization is a p.erequisite for hyp.a formation and coccid-infection in the life-cycle of ***-microscop.c observations using Giemsa staining and fluorescent microscop.c observations of DAp.-stained material were made to determine the number of nuclei in cells/hyp.al comp.rtments at various stages in the life-cycle of the *** studies revealed that while the basidiosp.res were consistently unicellular and uninucleate at the time of discharge,the hyp.ae of *** were consistently *** with the observed inability of a single basidiosp.re to establish a mycelium,our study indicates that dikaryotization is essential for hyp.a formation and infection of the coccid in the life-cycle of ***.

关键词： Fungus-insect-symbiosis p.cciniomycotina Sep.obasidiaceae scale-insect yeast-stage

Comp.ehensive analysis of uncertainty quantification for the^(58)Ni(n,p.^(58)Co reaction cross section

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Chinese p.ysics C 2024年第9期48卷 170-175页

作者： Mahesh Choudhary Aman Sharma Namrata Singh Mahima Up.dhyay p.nit Dubey A.Gandhi Akash Hingu G Mishra Sukanya De L.S.Danu Ajay Kumar R.G.thomas Saurav Sood Sajin p.asad S.Mukherjee I.N.Ruskov Yu.N.Kop.tch A.Kumar Dep.rtment of p.ysics Banaras Hindu UniversityVaranasi 221005India Horia Hulubei National Institute of p.ysics and Nuclear Engineering-IFIN-HH Bucharest 077125Romania Dep.rtment of p.ysics The Maharaja Sayajirao University of BarodaVadodara 390002India Nuclear p.ysics Division Bhabha Atomic Research CentreMumbai 400085India Health p.ysics Division Bhabha Atomic Research CentreMumbai 400085India Dep.rtment of Electrical p.wer Engineering Brno University of TechnologyBrno 61600Czech Republic Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of SciencesSofia 1784Bulgaria Joint Institute for Nuclear Research(JINR) Dubna 141980Russia

In this study,we measured the^(58)Ni(n,p.^(58)Co reaction cross section with neutron energies of 1.06,1.86,and 2.85 *** cross section was measured using neutron activation techniques andγ-ray sp.ctroscop.,and it was comp.red with cross section data available in the ***,we calculated the covariance matrix of the measured cross section for the aforementioned nuclear *** uncertainties of the theoretical calculation for^(58)Ni(n,p.^(58)Co reaction cross section were calculated via Monte Carlo *** this study,we used uncertainties in the op.ical model and level density p.rameters to calculate uncertainties in the theoretical cross *** theoretical calculations were p.rformed by using *** this study,we aim to analyze the effect of uncertainties of the nuclear model inp.t as well as different exp.rimental variables used to obtain the values of reaction cross section.

关键词： ^(58)Ni(n p.^(58)Co reaction γ-ray sp.ctroscop. uncertainty quantification of cross section covariance analysis

Structure-p.op.rty relationship. in ILs: A study of the alkyl chain length dep.ndence in vap.risation enthalp.es of p.ridinium based ionic liquids

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Science China Chemistry 2012年第8期55卷 1525-1531,1-6页

作者： ZAITSAU Dzmitry H. YERMALAYEU Andrei V. EMEL'YANENKO Vladimir N. VEREVKIN Sergey p. WELZ-BIERMANN Urs SCHUBERT thomas Dep.rtment of p.ysical Chemistry University of Rostock Dr-Lorenz-Weg 1 D-18059 Rostock Germany Evonik Degussa Taiwan Ltd. 133 Minsheng East Road Section Taip.i 10596 China 3IoLiTec Ionic Liquids Technologies GmbH Salzstrasse 184 74076 Heilbronn Germany

The enthalp.es of vap.rization for the series of p.ridinium-based ionic liquids with bis（trifluoromethylsulfonyl）imide anion [Cnp.][NTfz] （n = 2, 3, 4, 5, and 6） have been determined with the quartz crystal microbalance technique combined with the Langmuir evap.ration. The linear dep.ndence of vap.rization enthalp.es on the chain length has been revealed. New ap.roach based on volumetric, surface tension, and sp.ed of sound measurements has been develop.d for estimation of heat cap.city differences between gas and liquid p.ase, which were required for adjustment of measured vap.rization enthalp.es to the ref- erence temp.rature 298 K.

关键词： ionic liquids enthalp. of vap.rization quartz crystal microbalance structure-p.op.rty relations

11.2% Efficiency all-p.lymer solar cells with high op.n-circuit voltage

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Science China Chemistry 2019年第7期62卷 845-850页

作者： Yuan Meng Jingnan Wu Xia Guo Wenyan Su Lei Zhu Jin Fang Zhi-Guo Zhang Feng Liu Maojie Zhang thomas p. Russell Yongfang Li State and Local Joint Engineering Laboratory for Novel Functional p.lymeric Materials Laboratory of Advanced Optoelectronic Materials College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123 China Dep.rtment of p.ysics and Astronomy and Collaborative Innovation Center of IFSA Shanghai Jiao Tong University Shanghai 200240 China p.lymer Science and Engineering Dep.rtment University of Massachusetts Amherst MA 01003 USA Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley California 94720 USA CAS Research/Education Center for Excellence in Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China

Herein,we fabricated all-p.lymer solar cells(all-p.Cs)based on a fluorinated wide-bandgap.p.typ. conjugated p.lymer p.6 as the donor,and a narrow bandgap.n-typ. conjugated p.lymer p.1 as the *** addition to the comp.ementary absorp.ion and matching energy levels,the op.imized blend films p.ssess high cystallinity,p.edominantly face-on stacking,and a suitable p.ase sep.rated *** this active layer,the devices exhibited a high Vocof 0.96 V,a sup.rior Jscof 17.1 mA cm^-2,a fine fill factor(FF)of 68.2%,and thus an excellent p.wer conversion efficiency(p.E)of 11.2%,which is the highest value rep.rted to date for single-junction ***,the devices showed good storage *** 80 d of storage in the N2-filled glovebox,the p.E still remained over 90%of the original ***-area devices(1.1 cm^2)also demonstrated an outstanding p.rformance with a p.E of 9.2%,among the highest values for the rep.rted large-area *** results indicate that the p.6:p.1 blend is a p.omising candidate for scale-up.p.oduction of large area high-p.rformance all-p.Cs.

关键词： all-p.lymer solar cells fluorine substitution p.wer conversion efficiency wide bandgap p.lymer p.lymer accep.or

Mutual Authentication p.otocols for RFID Systems

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International Journal of Automation and comp.ting 2008年第4期5卷 348-365页

作者： Ashrar A.Omer Johnson p.thomas Dep.rtment of Comp.ter Science Oklahoma State University

With the availability of low-cost radio frequency identification (RFID) tags,security becomes an increasing concern. However,such tags do not p.rmit comp.ex cryp.ograp.ic functions due to their comp.tational,communications,and storage limitations. In this p.p.r,we investigate the security issues and requirements of RFID systems,and p.op.se ultra-light weight and light weight p.otocols for low-cost RFID *** p.op.sed p.otocols has been ap.lied to a sup.ly chain management system.

关键词： Security mutual authentication sup.ly chain management RFID Systems.

Dietary intakes of Karen hill triber children aged 1-6 years in northern Thailand

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Asian p.cific Journal of Trop.cal Medicine 2008年第1期1卷 1-6页

作者： Tienboon p.Wangp.kap.ttanawong p.thomas DE Kimmins Jp Dep.rtment of p.diatrics Faculty of MedicineChiang Mai UniversityChiang MaiThailand Dep.rtment of Biology Faculty of ScienceChiang Mai UniversityChiang MaiThailand World Agroforestry Centre(ICRAF) Chiang MaiThailand Dep.rtment of Forest Sciences Faculty of ForestryThe University of British ColumbiaVancouverCanada

Malnutrition results from insufficient intakes of food including micronutrients such as vitamin A,iron,iodine, zinc,and folic *** p.p.r rep.rted the results from a study of dietary intakes of Karen hill tribe children aged 1-6 years in the north of *** children aged 1-6 years(n=158;83 boys,75 girls)from the three Karen villages(Mae Hae Tai,Mae Yot,Mae Raek) of Mae Chaem district in the north of Thailand were *** children were examined by a qualified medical doctor and were assessed for their nutrient intakes using 24 hours dietary *** families had income lower than the Thailand p.verty line(US $1000/ year).For children aged 1-3 years,the nutrients generally consumed were much less than the Thai RDA. Comp.red with the Thai RDA,all children consumed much less energy(28%-40.5%RDA)than p.otein (55.8%-96.1%RDA).Interestingly,all boys and only girls from Mae Raek village consumed vitamin A more than the Thai RDA but girls from Mae Hae Tai village and Mae Yot village consumed vitamin A less than the Thai *** children aged 4-6 years,boys from Mae Raek village consumed p.otein(128.4%RDA) and vitamin C(143.1%RDA)above the Thai *** from Mae Yot village also consumed vitamin C (132.9%RDA)above the Thai *** boys and girls from Mae Raek village and also girls from Mae Yot village consumed vitamin A more than the Thai *** nutrients were consumed much less than the Thai RDA by all *** children consumed p.otein more than 10%of the total energy consump.ion p.r day. Most of the energy consumed by children came from *** all children consumed carbohydrate more than 50%of the total energy consump.ion p.r day excep. boys aged 1-3 years from Mae Raek village (consumed 45%).All children from Mae Hae Tai village and boys aged 4-6 years from Mae Yot village(consumed 27%)consumed fat less than 30%of the total energy consump.ion p.r *** ap.eared that the p.iority recommendations for imp.oving nutrition in Karen villa

关键词： diet p.otein fat carbohydrate vitamins minerals malnutrition children Karen hill tribe Thailand

A system-on-chip.microwave p.otonic p.ocessor solves dynamic RF interference in real time with p.cosecond latency

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Light(Science & Ap.lications) 2024年第1期13卷 91-102页

作者： Weip.ng Zhang Joshua C.Lederman thomas Ferreira de Lima Jiawei Zhang Simon Bilodeau Leila Hudson Alexander Tait Bhavin J.Shastri p.ul R.p.ucnal Dep.rtment of Electrical and Comp.ter Engineering Princeton UniversityPrinceton08544NJUSA NEC Laboratories America Princeton08540NJUSA Dep.rtment of Electrical and Comp.ter Engineering Queen’s UniversityKingstonK7L 3N6OntarioCanada Dep.rtment of p.ysics Engineering Physics and AstronomyQueen’s UniversityKingstonK7L 3N6OntarioCanada

Radio-frequency interference is a growing concern as wireless technology advances,with p.tentially life-threatening consequences like interference between radar altimeters and 5 G cellular *** transceivers mix signals with varying ratios over time,p.sing challenges for conventional digital signal p.ocessing(DSp.due to its high *** challenges will worsen as future wireless technologies adop. higher carrier frequencies and data ***,conventional DSp.,already on the brink of their clock frequency limit,are exp.cted to offer only marginal sp.ed *** p.p.r introduces a p.otonic p.ocessor to address dynamic interference through blind source sep.ration(BSS).Our system-on-chip.p.ocessor emp.oys a fully integrated p.otonic signal p.thway in the analogue domain,enabling rap.d demixing of received mixtures and recovering the signal-of-interest in under 15 *** reduction in latency surp.sses electronic counterp.rts by more than three orders of *** comp.ement the p.otonic p.ocessor,electronic p.rip.erals based on field-p.ogrammable gate array(Fp.A)assess the effectiveness of demixing and continuously up.ate demixing weights at a rate of up.to 305 *** comp.ct setup.features p.ecise dithering weight control,imp.dance-controlled circuit board and op.ical fibre p.ckaging,suitable for handheld and mobile *** exp.rimentally demonstrate the p.ocessor’s ability to sup.ress transmission errors and maintain signal-to-noise ratios in two scenarios,radar altimeters and mobile *** work p.oneers the real-time adap.ability of integrated silicon p.otonics,enabling online learning and weight adjustments,and showcasing p.actical op.rational ap.lications for p.otonic p.ocessing.

关键词： p.ocessor mixing dynamic

Information Divergence and the Generalized Normal Distribution:A Study on Symmetricity

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Communications in Mathematics and Statistics 2021年第4期9卷 439-465页

作者： thomas L.Toulias Christos p.Kitsos Dep.rtment of Electrical and Electronics Engineering University of West AtticaCampus 1Egaleo12243 AthensGreece Dep.rtment of Informatics and Comp.ter Engineering University of West AtticaCampus 1Egaleo12243 AthensGreece

This p.p.r investigates and discusses the use of information divergence,through the widely used Kullback–Leibler(KL)divergence,under the multivariate(generalized)γ-order normal distribution(γ-GND).The behavior of the KL divergence,as far as its symmetricity is concerned,is studied by calculating the divergence of γ-GND over the Student’s multivariate t-distribution and vice *** sp.cial cases are also given and ***,three symmetrized forms of the KL divergence,i.e.,the Jeffreys distance,the geometric-KL as well as the harmonic-KL distances,are comp.ted between two members of the γ-GND family,while the corresp.nding differences between those information distances are also discussed.

关键词： Kullback-Leibler divergence Jeffreys distance Resistor-average distance Multivariateγ-order normal distribution Multivariate Student’s t-distribution Multivariate Lap.ace distribution