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Reaction of nitrous oxide with methane to synthesis gas:A thermodynamic and catalytic study

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Journal of Energy Chemistry 2017年第1期26卷 155-162页

作者： Naseer A.Khan Eric m.kennedy Bogdan Z.Dlugogorski Adesoji A.Adesina michael Stockenhuber Priority Research Centre for Energy(PRCfE) The University of NewcastleCallaghanNSW 2308Australia Department of Chemical Engineering UETPeshawarKPKPakistan School of Engineering and Information Technology Murdoch UniversityMurdochWA 6150Australia ATODATECH LLC BrentwoodCA 94513USA

The aim of the present study is to explore the coherence of thermodynamic equilibrium predictions with the actual catalytic reaction of CH4 with N2O,particularly at higher CH4 *** this purpose,key process variables,such as temperature(300℃-550℃) and a molar feed ratio(N2O/CH4 = 1,3,and 5),were altered to establish the conditions for maximized *** experimental study was conducted over the Co-ZSm-5 catalyst in a fixed bed tubular reactor and then compared with the thermodynamic equilibrium compositions,where the equilibrium composition was calculated via total Gibbs free energy minimization *** results suggest that molar feed ratio plays an important role in the overall reaction products *** for N2O conversions,and irrespective of N2O/CH4feed ratio,the thermodynamic predictions coincide with experimental data obtained at approximately 475℃-550℃,indicating that the reactions are kinetically limited at lower range of *** example,theoretical calculations show that the H2 yield is zero in presence of excess N2O(N2O/CH4= 5).However over a Co-ZSm-5 catalyst,and with a same molar feed ratio(N2O/CH4) of 5,the H2yield is initially 10%at 425℃,while above450℃ it drops to ***,H2yield steadily increases with temperature and with the level of CH4 conversion for reactions limited by N2O concentration in a reactant *** maximum attainable(from thermodynamic calculations and at a feed ratio of N2O/CH4=3) H2yield at 550℃ is 38%,whereas at same temperature and over Co-ZSm-5,the experimentally observed yield is about 19%.Carbon deposition on Co-ZSm-5 at lower temperatures and CH4 conversion(less than 50%) was also *** higher temperatures and levels of CH4conversion(above 90%),the deposited carbon is suggested to react with N2O to form CO2.

关键词： Gibbs free energy minimization N2O CH4 Synthesis gas

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重要的是就在身边

英语学习 2001年第12期 16-17页

作者： James m.kennedy 张敏

为出人头地,为功成名就,我们必须学会冷静地"思考", 感受我们身边的平凡。但同时却忘记了如何去认真地"感受" "What's the most importantthing you've done in yourlife?"The question wasput to me during a presentation I gaveto a group of *** answer came to me in *** it's not the one I gave,because the setting wasn't *** alawyer in the entertainment industry,I knew the audience wanted to hearsome amusing stories about my workwith well-known *** here'sthe true answer,the one that leapt from

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mitochondrial recruitment in myelin:an anchor for myelin dynamics and plasticity?

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Neural Regeneration Research 2024年第7期19卷 1401-1402页

作者： Jean-David m.Gothié Timothy E.kennedy Department of Neurology and Neurosurgery Montreal Neurological InstituteMcGill UniversityMontrealQCCanada

Optimal propagation of neuronal electrical impulses depends on the insulation of axons by myelin,produced in the central nervous system by *** is an extension of the oligodendrocyte plasma membrane,which wraps around an axon to form a compact multi-layered *** is composed of a substantially higher proportion of lipids compared to other biological membranes and enriched in a small number of specialized proteins.

关键词： plasticity insulation dynamics

Kinetics of the gas phase reaction of SnO with O2

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Kinetics of the gas phase reaction of SnO with O2

The 24th International Symposium on Shock Waves

作者： J.Herzler m.kennedy F.E.Kruis P.Roth Institut fur Verbrennung und Gasdynamik Prozeβ-und Aerosolmeβtechnik Universitat Duisburg-Essen 47048 Duisburg Germany

The gas phase reaction of SnOg with O2 was studied behind reflected shock waves at temperatures between 1700 and 2300 K and pressures around 100 kPa by applying atomic resonance absorption spectroscopy for time-resolved measurements of O atoms at 130.6 nm. The source of gas phase SnOg were SnO nanoparticles which rapidly evaporate behind the reflected shock wave in a few microseconds. For the reaction SnOg + O2 →SnO2,g + O a rate coefficient of k1 = 1014.78±0.19 ×exp(-23530±840K/T)cm3mol-1s-1 was determined for the temperature range of the present experiments.

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陪在你身边

英语文摘 2003年第6期 3-5页

作者： James m.kennedy 冯丽丽黑龙江大学成教院

[参考译文]在我给一批律师作讲演的时候,有人问,"你一生中做过的最重要的事是什么?"我马上就想到了答案。但是我没有说,因为不适合当时的环境。作为一名娱乐业的律师,我知道听众们想听的是我与知名人士在工作上的一些有趣的故事。但下... 详细信息

[参考译文]在我给一批律师作讲演的时候,有人问,"你一生中做过的最重要的事是什么?"我马上就想到了答案。但是我没有说,因为不适合当时的环境。作为一名娱乐业的律师,我知道听众们想听的是我与知名人士在工作上的一些有趣的故事。但下面才是真正的答案——一个从我记忆深处一跃而出的答案。

关键词：法学院

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采用新型活塞环涂层降低摩擦功率

汽车与新动力 2015年第3期47卷 64-66页

作者： m.kennedy S.Hoppe J.Esser 范明强

活塞环具有降低内燃机燃油耗和CO2排放的巨大潜力。Federal-mogul公司开发了名为"DuroGlide"的新型活塞环涂层,其特点是具有高耐久性,并能显著降低摩擦功率。由于新型涂层具备良好的耐磨损性,并且其抗烧损性能比传统活塞环涂层更好,因... 详细信息

活塞环具有降低内燃机燃油耗和CO2排放的巨大潜力。Federal-mogul公司开发了名为"DuroGlide"的新型活塞环涂层,其特点是具有高耐久性,并能显著降低摩擦功率。由于新型涂层具备良好的耐磨损性,并且其抗烧损性能比传统活塞环涂层更好,因此可以满足对汽油机和柴油机提出的苛刻要求。

关键词：内燃机活塞环涂层燃油耗 CO2排放摩擦功率

Targeting AmPKa1 Gene in PC3 Cells by Triphenylmethanol Derivatives

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Natural Science 2024年第7期16卷 111-120页

作者： William Yaw Boadi Jamari Jemison kennedy Welbert Sanaa Dudley Tayalla Hizer Ryan Beni Departments of Chemistry and Biology Tennessee State University Nashville USA

Epidemiological studies indicate that treatment with metformin, an AmP-activated protein kinase (AmPK) activator, reduces the incidence of cancers. Activation of AmPK has also been reported to oppose tumor progression in diverse types of cancers and offers promising cancer therapy. Furthermore, AmPK is a primary regulator of energy metabolism and has also been implicated in cell cycle progression, angiogenesis, cell transformation, migration, and cancer. We have recently synthesized novel flavonoids, namely, triphenylmethanol derivatives (TPms), but the effectiveness of the TPms on the activity of AmPK remains unclear. We hypothesized that the novel TPms would inhibit cancer cell proliferation through the activation of AmPK isoforms in cells. The effects of TPms on prostate cells (PC-3) were investigated. Cells were exposed to TPms for either 12 or 24 hr. at the respective doses of 0, 25, 50 100, and 200 µm based on the cell viability studies by the (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, a tetrazole) (mTT) assay. The results indicate that cells exposed to the respective doses of TPms increased both phospho- and total-AmPKα1 in a dose- and time-dependent manner. The effects of the increases for the phospho- and total-AmPKα in cells were greater for the 24-hr than the 12-hr. incubation. Further studies are currently going on to elucidate the specificities of the said insults in increasing the phospho- and total-AmPKα activities and for the other respective isoforms.

关键词： Prodrugs AmP-Activated Protein Kinase Polyphenols Prostate Cancer Triphenylmethanol

Knee Osteoarthritis Progression after Distal Femur Closing Wedge Osteotomy

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Open Journal of Orthopedics 2024年第4期14卷 187-199页

作者： Ferdinand Nyankoué mebouinz Khalifa Fall kennedy muluem Justine Raphaela Nyekel moustapha Niane Alioune Badara Gueye Daniel Handy Eone Charles Valerie Kinkpé Department of Surgery and Specialties The Faculty of Medicine and Biomedical Sciences The University of Yaound&#233 I Yaound&#233 Cameroon Department of Orthopedic and Trauma Surgery Cheikh Anta Diop University of Dakar Dakar Senegal Department of Surgery and Specialties The Faculty of Medicine and Pharmaceuticals Sciences The University of Douala Douala Cameroon

Background: Despite the conservative treatment of tibio-femoral osteoarthritis through realignment osteotomies, the rate of total knee replacements following an osteotomy is increasing. The aim of this study was to identify the factors associated with the progression of knee osteoarthritis after a medial closing-wedge distal femoral osteotomy. methods: Hospital-based observational study on 20 patients who underwent a medial closing-wedge distal femoral osteotomy evaluating the progression of osteoarthritis using the Kellgren and Laurence classification. The Wilcoxon test was used to compare the variation in the progressive stage of the Kellgren and Laurence classification of knee osteoarthritis preoperatively and at the final follow up. Univariate analysis made it possible to determine the factors associated with progression. The final significance threshold for statistical tests was set at 5% (p Results: Overall, the mean follow-up of 46 months ± 6.6 months, with a mean age of 43 years (range: 27 - 69 years) and a female predominance (m: F = 3/7). The progression of tibiofemoral osteoarthritis following a medial closing-wedge distal femoral osteotomy is associated with valgus or varum malalignment been a moderate valgus (OR 6.2 [1.5 - 42.7] at 95% CI;p-value = 0.02), a correction of the mechanical deviation angle with a valgus alignment (OR 2.7 [0.9 - 8.3] at 95% CI), and loss of correction (OR 3.8 [1.3 - 11.6] at 95% CI;p -value) for the lateral compartment while varus alignment (OR 1.7 [0.9 - 8.3] 95% CI, p-value = 0.05) and with rupture of the lateral cortex (OR 2.8 [1.7 - 11.5] 95% CI, p-value = 0.02) were those of the medial compartment. Conclusion: Distal femur closing wedge osteotomy does not definitively interrupt the progression of valgus knee osteoarthritis. The factors associated with the progression of this pathology are modifiable. Taking them into account when performing this surgical technique could improve the osteotomy survival curve.

关键词： Knee Osteoarthritis Progression Osteotomy Distal Femur

The Soft X-ray Imager(SXI)on the SmILE mission

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Earth and Planetary Physics 2024年第1期8卷 5-14页

作者： S.Sembay A.L.Alme D.Agnolon T.Arnold A.Beardmore A.Belén Balado margeli C.Bicknell C.Bouldin G.Branduardi-Raymont T.Crawford J.P.Breuer T.Buggey G.Butcher R.Canchal J.A.Carter A.Cheney Y.Collado-Vega H.Connor T.Crawford N.Eaton C.Feldman C.Forsyth T.Frantzen G.Galgóczi J.Garcia G.Y.Genov C.Gordillo H-P.Gröbelbauer m.Guedel Y.Guo m.Hailey D.Hall R.Hampson J.Hasiba O.Hetherington A.Holland S-Y.Hsieh m.W.J.Hubbard H.Jeszenszky m.Jones T.kennedy K.Koch-mehrin S.Kögl S.Krucker K.D.Kuntz C.Lakin G.Laky O.Lylund A.martindale J.miguel mas Hesse R.Nakamura K.Oksavik N.Østgaard H.Ottacher R.Ottensamer C.Pagani S.Parsons P.Patel J.Pearson G.Peikert F.S.Porter T.Pouliantis B.H.Qureshi W.Raab G.Randal A.m.Read N.m.m.Roque m.E.Rostad C.Runciman S.Sachdev A.Samsonov m.Soman D.Sibeck S.Smit J.Søndergaard R.Speight S.Stavland m.Steller TianRan Sun J.Thornhill W.Thomas K.Ullaland B.Walsh D.Walton C.Wang S.Yang School of Physics and Astronomy University of LeicesterLeicesterLE17RHUK Space Park Leicester University of LeicesterLeicesterLE17RHUK mullard Space Science Laboratory University College LondonDorkingRH56NTUK Centre for Electronic Imaging Open UniversityMilton KeynesMK76 AAUK Birkeland Centre for Space Science Department of Physics and TechnologyUniv.of BergenN-5007 BergenNorway University of Vienna A-1010 ViennaAustria Space Research Institute Austrian Academy of SciencesA-8042 GrazAustria National Institute of Aerospace Technology MadridSpain ESTEC European Space Agency2201 AZ NoordwijkNetherlands State Key Laboratory of Space Weather National Space Science CentreBeijing 100190China University of Applied Sciences and Arts Northwestern Switzerland CH-5210 WindischSwitzerland Koegl Space GmbH CH-8157 DielsdorfSwitzerland Space Acoustics GmbH CH-8157 DielsdorfSwitzerland Zurich University of Applied Sciences 8400 WinterhurSwitzerland Genov Solutions N-5172 LoddefjordNorway STm Engineering N-5165 LaksevagNorway John Hopkins University Applied Physics Laboratory MD 20723USA NASA/Goddard Space Flight Centre MD 20771USA Center for Space Physics Boston UniversityBostonMA 02215USA Department of Theoretical Physics and Astrophysics Masaryk University60177 BrnoCzech Republic Institute of Physics E¨otvo¨s Lor´and University1053 BudapestHungary Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100045China Centro de Astrobiologia(CAB) CSIC-INTAMadridSpain

The Soft X-ray Imager(SXI)is part of the scientific payload of the Solar wind magnetosphere Ionosphere Link Explorer(SmILE)*** is a joint science mission between the European Space Agency(ESA)and the Chinese Academy of Sciences(CAS)and is due for launch in *** is a compact X-ray telescope with a wide field-of-view(FOV)capable of encompassing large portions of Earth’s magnetosphere from the vantage point of the SmILE *** is sensitive to the soft X-rays produced by the Solar Wind Charge eXchange(SWCX)process produced when heavy ions of solar wind origin interact with neutral particles in Earth’s *** provides a mechanism for boundary detection within the magnetosphere,such as the position of Earth’s magnetopause,because the solar wind heavy ions have a very low density in regions of closed magnetic field *** sensitivity of the SXI is such that it can potentially track movements of the magnetopause on timescales of a few minutes and the orbit of SmILE will enable such movements to be tracked for segments lasting many *** is led by the University of Leicester in the United Kingdom(UK)with collaborating organisations on hardware,software and science support within the UK,Europe,China and the United States.

关键词： Soft X-ray Imaging micropore optics large area CCD