A comparison of local Type Ia supernovae with the IRAS PSCz gravity field     

D. J. Radburn-Smith  J. R. Lucey  M. J. Hudson 《Monthly notices of the Royal Astronomical Society》2004,355(4):1378-1382

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Reactions of nitriles in ices relevant to Titan, comets, and the interstellar medium: formation of cyanate ion, ketenimines, and isonitriles     

R.L. Hudson  M.H. Moore 《Icarus》2004,172(2):466-478

Motivated by detections of nitriles in Titan's atmosphere, cometary comae, and the interstellar medium, we report laboratory investigations of the low-temperature chemistry of acetonitrile, propionitrile, acrylonitrile, cyanoacetylene, and cyanogen (CH₃CN, CH₃CH₂CN, CH₂CHCN, HCCCN, and NCCN, respectively). A few experiments were also done on isobutyronitrile and trimethylacetonitrile ((CH₃)₂CHCN and (CH₃)₃CCN, respectively). Trends were sought, and found, in the photo- and radiation chemical products of these molecules at 12-25 K. In the absence of water, all of these molecules isomerized to isonitriles, and CH₃CN, CH₃CH₂CN, and (CH₃)₂CHCN also formed ketenimines. In the presence of H₂O, no isonitriles were detected but rather the cyanate ion (OCN⁻) was seen in all cases. Although isonitriles, ketenimines, and OCN⁻ were the main focus of our work, we also describe cases of hydrogen loss, to make smaller nitriles, and hydrogen addition (reduction), to make larger nitriles. HCN formation also was seen in most experiments. The results are presented in terms of nitrile ice chemistry on Titan, in cometary ice, and in the interstellar medium. Possible connections to prebiotic chemistry are briefly discussed.  相似文献   

The spatial distribution of groundwater flooding in a chalk catchment in southern England     

J. W. Finch  R. B. Bradford  J. A. Hudson 《水文研究》2004,18(5):959-971

Groundwater flooding occurred in the upper parts of many chalk rivers in the UK during the exceptionally wet winter of 2000–01. This provided a rare opportunity to investigate the spatial distribution of groundwater discharge and flooding along the normally dry intermittent headwaters of a chalk catchment. The extent of flooding along the River Pang, upstream of the seasonal head, was mapped using aerial photography, and point measurements of flow and water temperature were used to identify the contributing reaches of the river. The results are discussed in the context of the geological and groundwater conditions. The occurrence of flooding can largely be explained by the regional groundwater flow directions, but increased flow in some locations may be as a result of preferential groundwater flow along lines of geological structure. Published by John Wiley & Sons, Ltd.  相似文献   

Streaming motions of galaxy clusters within 12 000 km s⁻¹– III. A standardized catalogue of Fundamental Plane data     

Michael J. Hudson  John R. Lucey  Russell J. Smith  David J. Schlegel  Roger L. Davies 《Monthly notices of the Royal Astronomical Society》2001,327(1):265-295

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Overall properties of heterogeneous material   总被引：1，自引：0，他引：1  

J. A. Hudson 《Geophysical Journal International》1991,107(3):505-511

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Eclipsing binary system R Canis Majoris     

E Budding  K-Y Chen  G Hudson  R Hudson  M Thomas  F B Wood 《Experimental Astronomy》1994,5(1-2):189-194

Problems raised by R CMa are revisited. The theoretical significance of observable period changes is noted. Some recent observations are presented and briefly considered against this background.  相似文献   

Early-type galaxy distances from the Fundamental Plane and surface brightness fluctuations   总被引：1，自引：0，他引：1  

John P.Blakeslee  John R.Lucey  John L.Tonry  Michael J.Hudson  Vijay K.Narayanan  Brian J.Barris 《Monthly notices of the Royal Astronomical Society》2002,330(2):443-457

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The presence of moral hazard regarding flood insurance and German private businesses     

Hudson  Paul  Thieken  Annegret H. 《Natural Hazards》2022,112(2):1295-1319

Natural Hazards - There is a movement towards the concepts of integrated flood risk management and governance. In these concepts, each stakeholder prone to flooding is tasked with actively limiting...  相似文献   

Švestka’s Research Then and Now     

H. S. Hudson 《Solar physics》2015,290(12):3383-3397

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Climate change and infectious diseases: Can we meet the needs for better prediction?     

Xavier Rodó  Mercedes Pascual  Francisco J. Doblas-Reyes  Alexander Gershunov  Dáithí A. Stone  Filippo Giorgi  Peter J. Hudson  James Kinter  Miquel-Àngel Rodríguez-Arias  Nils Ch. Stenseth  David Alonso  Javier García-Serrano  Andrew P. Dobson 《Climatic change》2013,118(3-4):625-640

The next generation of climate-driven, disease prediction models will most likely require a mechanistically based, dynamical framework that parameterizes key processes at a variety of locations. Over the next two decades, consensus climate predictions make it possible to produce forecasts for a number of important infectious diseases that are largely independent of the uncertainty of longer-term emissions scenarios. In particular, the role of climate in the modulation of seasonal disease transmission needs to be unravelled from the complex dynamics resulting from the interaction of transmission with herd immunity and intervention measures that depend upon previous burdens of infection. Progress is also needed to solve the mismatch between climate projections and disease projections at the scale of public health interventions. In the time horizon of seasons to years, early warning systems should benefit from current developments on multi-model ensemble climate prediction systems, particularly in areas where high skill levels of climate models coincide with regions where large epidemics take place. A better understanding of the role of climate extremes on infectious diseases is urgently needed.  相似文献