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OXIDATIVE COUPLING OF METHANE OVER SrCeO3

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Journal of Energy Chemistry 1993年第3期 252-257页

作者： William R.moser Department of Chemical Engineering Worcester Polytechnic Institute Worcester MA USA 01609

XRD data show that in reaction stream perovskite compound SrCeOcecomposes into SrCOand CeOphases completely, in which Ce and Sr cationspenetrate respectively. The insertion of Sr cations into CeOphase suppresses itscombustion power and promotes Cselectivity substantially. The kinetics of titlereaction over CeO, SrCeOand SrCeYbOsub>2.94 has been measured. It im-plies that the rate-determining step is the dehydrogeration of methane moleculeto form methyl radical on CeOphase.

关键词： show OXIDATIVE COUPLING OF METHANE OVER SrCeO3 CZ

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初中生 2024年第18期 22-24页

作者：莎拉·特雷弗·蒂斯黛尔 Cecilia 不详

Predicting early graft loss in pancreas transplantation using novel imaging techniques: are we there yet?

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Hepatobiliary Surgery and Nutrition 2023年第2期12卷 276-279页

作者： Samrat Ray trevor W.Reichman Ajmera Transplant Centre Toronto General HospitalUniversity Health NetworkTorontoONCanada Department of Surgery University of TorontoTorontoONCanada

Since its inception in 1966 at the University of Minnesota,pancreas transplantation has witnessed major milestones in evolution of surgical techniques,immunosuppression regimen and more recently,machine perfusion for ... 详细信息

关键词： Hyperspectral imaging(HSI) pancreas transplantation duodenal leaks early graft loss

Vortex Capturing Using PNS-WENO Schemes in Uniform and Non Uniform Mesh Formulations

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Advances in Applied Mathematics and Mechanics 2010年第4期2卷 399-429页

作者： Demian De Feo Ning Qin trevor J.Birch Sheffield University Aerodynamics and Thermofluids Group SheffiledUK Defence Science and Technology Laboratory FarnboroughUK

High order approximations of the vortical flowfield and resulting aerodynamic coefficients of complex supersonic vortical flows,are computed using the Implicit Parabolized Navier-Stokes solver(IMPNS).Third and fifth order Weighted Essentially Non-oscillating(WENO)schemes for evenly spaced and for stretched structured meshes are employed for the approximate Riemann solution of the inviscid cross flow *** approximate Riemann solution is obtained using the Osher and Solomon solver and the one-equation Spalart-Allmaras turbulence model is modified for an improved strain-vorticity *** indicate that even on much coarser meshes the 5th order PNS-WENO-Spalart-Allmaras approach may achieve results that are superior to previously published full Navier-Stokes solutions that employ a two-equation RANS model but the additional computational demand of schemes for non-uniform grids,may not be justifiable for smoothly varying *** proposed PNS-WENO scheme combination provides a novel approach that is fast,accurate and robust,and that can substantially reduce numerical dissipation and improve the resolution of the vortical structures.

关键词： PNS solutions WENO method vortical flows supersonic flows

Foreword to Semen Analysis in 21st Century Medicine special issue in Asian Journal of Andrology

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Asian Journal of Andrology 2010年第1期12卷 7-10页

作者： David J. Handelsman trevor G. Cooper Reproductive Endocrinology ＆ Andrology ANZA C Research Institute Sydney Australia Andrology Laboratory Institute of Reproductive Medicine of the University Munster Germany

Semen analysis as an integral part of infertility investigations has a surprisingly long history, emerging only slowly, from under a cloud of disrepute and occupying a solitary niche outside conventional pathology tests, until relatively recently. From origins in the 19th century when spermatozoa were only identified as present or absent in cervical mucus samples from postcoital tests, even then a practice deemed ＂... dabbling incompatible with decency and self-respect...＂（cited in [1]）.

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The scarab gut： A potential bioreactor for bio-fuel production

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Insect Science 2010年第3期17卷 175-183页

作者： Sheng-Wei Huang Hong-Yu Zhang Sean Marshall trevor A. Jackson State Key Laboratory of Agricultural Microbiology Institute of Urban and Horticultural Pests and Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory College of Plant Science and Technology Huazhong Agricultural University Wuhan China Biocontrol Biosecurity and Bioprocessing AgResearch Limited Christchurch New Zealand

Cellulose and hemicelluloses are the most prevalent sources of carbon in nature. Currently many approaches employ micro-organisms and their enzyme products to degrade plant feedstocks for production of bioenergy. Scarab larvae are one such model. They consume celluloses from a variety of sources including plant roots, soil organic matter and decaying wood, and are able to extract nutrients and energy from these sources. In this paper, we review the physicochemical properties of the scarab larval gut, the diversity and digestive role that microflora play in the scarab gut and discuss the potential for applying these digestive processes in bioreactors for improving bio-fuel production. Scarab larvae are characterised by their highly alkaline midgut which is dominated by serine proteinase enzymes, and a modified hindgut which harbors the majority of the intestinal microbiota under anaerobic conditions. Evidence suggests that digestion of recalcitrant organic matter in scarab larvae likely results from a combination of endogenous gut proteinases and cellulolytic enzymes produced by symbiotic micro-organisms. Most of the easily digestible proteins are mobilized and absorbed in the midgut by endogenous proteinases. The hindgut contents of scarab larvae are characterized by high concentrations of volatile fatty acids, the presence of fermenting bacteria, and typical anaerobic activities, such as methanogenesis. The hindgut typically contains a wide diversity of micro-organisms, some of which appear to be obligate symbionts with cellulolytic potential. As a result, the scarab larval gut can be regarded as a small bioreactor resembling the rumen of sheep or cattle, where solid food particles composed of cellulose, hemicellulose, pectin and polysaccharides are degraded through enzymatic and fermentation processes. Together these observations suggest scarab larvae have potential to assist the bio-fuel industry by providing new sources of （hemi）cellulolytic bacteria and bacteri

关键词： bio-fuel bioreactor cellulolytic enzymes microflora Scarabaeidae

Different Performances of H_2O_2 to Oxidise Aldicarb and Hexazinone in the Advanced Oxidation Process of Ozone/Hydrogen Peroxide

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Journal of Donghua University(English Edition) 2014年第3期31卷 348-353页

作者：冉治霖孙楚李绍峰 CRAIG Denver Williams trevor John Hocking School of Transportation and Environment Shenzhen Institute of Information Technology College of Resources and Environment Northeast Agricultural University Shenzhen Key Lab of Industrial Water Saving&Municipal Sewage Reclamation Technology Shenzhen Polytechnic Institute School of Applied Science University of WolverhamptonWolverhampton WV1 1LYUK

The degradations of hexazinone and aldicarb by direct ozonation combined an advanced oxidation process( AOP) of O3/H2O2 were investigated in this study focusing on the oxidation mechanism by identifying the hydrogen peroxide consumption during the oxidation process of the two chemicals. The results showed that H2O2 could enhance the removal rate of the triazine herbicide hexazinone,and it was consumed along with the variation of removal rate in the light of different pH levels. The addition of H2O2 contributed little to the removal of the thiocarbamate herbicide aldicarb and H2O2 content kept constantly throughout the degradation process. Tert-butyl alcohol( TBA) effectively scavenged the ·OH radical for hexazinone,but had no effect on the removal rate of aldicarb. Aldicarb removal was mainly attributed to direct ozonation molecule in both O3( 97.00%) and O3/H2O2( 96.76%)systems. Moreover,sole O3 could hardly oxidize hexazinone whereas·OH radicals contribute respective 74.70% and 97.50% of removal in O3 system and O3/H2O2 AOP. All of these findings suggest that the mechanism of ·OH radical generation and the chain reaction in O3/H2O2 AOP should be further discussed.

关键词： hexazinone aldicarb O3/H2O2 direct and indirect oxidation H2O2consumption

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Operational concepts of HVDC in the context of security assessment in the German transmission grid

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Global Energy Interconnection 2019年第2期2卷 130-132页

作者： Annika Klettke Marius Sieberichs Albert moser Institute of Power Systems and Power Economics

Because of the realization of HVDC connections parallel to the synchronous grid in Germany, operational concepts become more important in the context of system security aspects. In this article commonly known concepts are analyzed regarding their suitability for the German transmission system. Therefore, an approach for the analysis was developed and exemplary results are given using this approach. Under consideration of the overall system, the concepts of reducing losses in combination with minimizing(n-1)-warnings or-indications^1 as well as the sole minimization of(n-1)-warnings and-indications are the most reasonable approaches. However, under grid security aspects best results can be achieved by reducing operational limits and therefore, by the minimization of(n-1)-warnings.

关键词： System security Transmission grid Operational concept HVDC

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Strategies for combating bacterial biofilm infections

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International Journal of Oral Science 2015年第1期7卷 1-7页

作者： Hong Wu Claus moser Heng-Zhuang Wang Niels Hφiby Zhi-Jun Song Department of Clinical Microbiology Rigshospitalet University Hospital of Copenhagen Department of International Health Immunology &Microbiology University of Copenhagen Department of Clinical Microbiology Slagelse Hospital

Formation of biofilm is a survival strategy for bacteria and fungi to adapt to their living environment, especially in the hostile environment. Under the protection of biofilm, microbial cells in biofilm become tolerant and resistant to antibiotics and the immune responses, which increases the difficulties for the clinical treatment of biofilm infections. Clinical and laboratory investigations demonstrated a perspicuous correlation between biofilm infection and medical foreign bodies or indwelling devices. Clinical observations and experimental studies indicated clearly that antibiotic treatment alone is in most cases insufficient to eradicate biofilm infections. Therefore, to effectively treat biofilm infections with currently available antibiotics and evaluate the outcomes become important and urgent for clinicians. The review summarizes the latest progress in treatment of clinical biofilm infections and scientific investigations, discusses the diagnosis and treatment of different biofilm infections and introduces the promising laboratory progress, which may contribute to prevention or cure of biofilm infections. We conclude that, an efficient treatment of biofilm infections needs a well-established multidisciplinary collaboration, which includes removal of the infected foreign bodies, selection of biofilm-active, sensitive and well-penetrating antibiotics, systemic or topical antibiotic administration in high dosage and combinations, and administration of anti-quorum sensing or biofilm dispersal agents.

关键词： antibiotic resistance antimicrobial treatments bacterial biofilm chronic infection

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