Residence time of non-methane hydrocarbons in the atmosphere     

A. Duce  G. Quinn  L. Wade 《Marine pollution bulletin》1974,5(4):59-61

Little is known about the atmospheric distribution and residence time of hydrocarbons, although this is critical in evaluating their impact on the oceans. This paper reviews the sparse data on both global production and concentration of atmospheric hydrocarbons in marine and continental non-urban areas, and estimates the atmospheric residence time of these substances.  相似文献   

An overview of the Lagrangian experiments undertaken during the North Atlantic regional Aerosol Characterisation Experiment (ACE‐2)     

Doug W. Johnson  Simon Osborne  Robert Wood  Karsten Suhre  Randy Johnson  Steven Businger  Patricia K. Quinn  Alfred Wiedensohler  Philip A. Durkee  Lynn M. Russell  Meinrat O. Andreae  Colin O'Dowd  Kevin J. Noone  Brian Bandy  J. Rudolph  Spyros Rapsomanikis 《Tellus. Series B, Chemical and physical meteorology》2000,52(2):290-320

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Evolution of the aerosol, cloud and boundary‐layer dynamic and thermodynamic characteristics during the 2nd Lagrangian experiment of ACE‐2     

Simon R. Osborne  Douglas W. Johnson  Robert Wood  Brian J. Bandy  Meinrat O. Andreae  Colin D. O'Dowd  Paul Glantz  Kevin J. Noone  Christoph Gerbig  Jochen Rudolph  Timothy S. Bates  Patricia Quinn 《Tellus. Series B, Chemical and physical meteorology》2000,52(2):375-400

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A comparison of aerosol chemical and optical properties from the 1st and 2nd Aerosol Characterization Experiments   总被引：1，自引：0，他引：1  

P. K. Quinn  T. S. Bates  D. J. Coffman  T. L. Miller  J. E. Johnson  D. S. Covert  J.&#;P. Putaud  C. Neusüß  T. Novakov 《Tellus. Series B, Chemical and physical meteorology》2000,52(2):239-257

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Biological and ecological mechanisms for overcoming sperm limitation in invasive dreissenid mussels     

Noel P. Quinn  Josef D. Ackerman 《Aquatic Sciences - Research Across Boundaries》2012,74(3):415-425

Many broadcast-spawning benthic invertebrates are subject to sperm limitation yet achieve high population densities, as for example dreissenid mussels (Dreissena polymorpha and Dreisssena bugensis) that were introduced into the Laurentian Great Lakes. The question remains whether biological or ecological/physical mechanisms reduce sperm limitation. Gamete dilution/longevity experiments were undertaken to determine whether dreissenid mussels are subject to sperm limitation, and computational fluid dynamic modeling was used to determine the potential influence of bottom roughness on sperm dilution in nature. Results indicated that dreissenid mussels may be sperm limited, but the extent to which sperm dilution affects them is lower than what was reported for other broadcast spawning invertebrates. Importantly, model mussel clusters influenced external fertilization by retaining sperm in downstream eddies but allowing downstream transport from one cluster to another. This, in addition to high sperm potency at low sperm concentrations, may help to explain the success of dreissenid mussels as invasive species.  相似文献   

Multibeam maser survey of methanol and excited OH in the Magellanic Clouds: new detections and maser abundance estimates     

J. A. Green  J. L. Caswell  G. A. Fuller  S. L. Breen  K. Brooks  M. G. Burton  A. Chrysostomou  J. Cox  P. J. Diamond  S. P. Ellingsen  M. D. Gray  M. G. Hoare  M. R. W. Masheder  N. McClure-Griffiths  M. Pestalozzi  C. Phillips  L. Quinn  M. A. Thompson  M. Voronkov  A. Walsh  D. Ward-Thompson  D. Wong-McSweeney  J. A. Yates  R. J. Cohen † 《Monthly notices of the Royal Astronomical Society》2008,385(2):948-956

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Anisotropy in Fracking: A Percolation Model for Observed Microseismicity     

J. Quinn Norris  Donald L. Turcotte  John B. Rundle 《Pure and Applied Geophysics》2015,172(1):7-21

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Depositional history of organic contaminants in Narragansett Bay, Rhode Island, USA   总被引：2，自引：0，他引：2  

Hartmann PC  Quinn JG  Cairns RW  King JW 《Marine pollution bulletin》2005,50(4):388-395

Sediment cores were taken at three locations in Narragansett Bay, Rhode Island, USA in 1997 and analyzed for a variety of organic contaminants including polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), chlordanes, linear alkyl benzenes (LABs), benzotriazoles (BZTs) and dichlorodiphenyltrichloroethanes (DDTs) and metabolites. The distributions of these chemicals at Apponaug Cove and in the Seekonk River indicate that there was a disturbance in the depositional environment relative to cores collected at these locations in 1986 demonstrating the potential for buried contaminants to be remobilized in the environment even after a period of burial. Sharp breaks in the concentration of several organic markers with known dates of introduction were successfully used to determine the sedimentation rate at Quonset Point. Both the Quonset Point and Seekonk River cores had subsurface maximums for DDTs, PCBs, PAHs and BZTs, which are consistent with expected inputs to the environment. The Apponaug Cove core showed an increase of most contaminants at the surface indicating a recent event in which more contaminated sediments were deposited at that location.  相似文献   

C₂₅ and C₃₀ biogenic alkenes in a sediment core from the upper anoxic basin of the Pettaquamscutt River (Rhode Island,U.S.A.)     

Adolfo G. Requejo  James G. Quinn  Juanita N. Gearing  Patrick J. Gearing 《Organic Geochemistry》1984,7(1):1-10

Concentration profiles of five C₂₅ and C₃₀ biogenic alkenes in a sediment core collected from the upper anoxic basin of the Pettaquamscutt River have been determined. The five alkenes were identified usin gas chromatography/mass spectrometry as three isomeric C₂₅ dienes, a C₂₅ triene and a bicyclic C₃₀ diene. All five compounds exhibit subsurface concentration maxima, thought to result from either preservation of a past increase in alkene production or a current bacterial in situ production at depth. Similarities exist in the concentrations of two alkenes common to this core and a core from upper Narragansett Bay, despite significant differences in the origin and content of sedimentary organic matter (as inferred from organic carbon and δ ¹³C measurements) at each location. These observations support the proposed bacterial in situ synthesis of alkenes. Other alkenes, whose concentration in sediments had been previously correlated with the incidence of marine organic matter, were not detected in the upper basin sediments. Their absence is consistent with the range of organic carbon δ ¹³C values measured, which indicate that the component originating from marine sources is small. A comparison of organic carbon and δ ¹³C values in this core with those previously reported from a core collected in an adjoining basin indicate that the sedimentary regimes at the two sites differ despite their close proximity and similar hydrography.  相似文献   

Solubilization of hydrocarbons by the dissolved organic matter in sea water     

Paul D Boehm  James G Quinn 《Geochimica et cosmochimica acta》1973,37(11):2459-2477

Water samples from Narragansett Bay and the Providence River, and fulvic acid/ saline water solutions were examined for their ability to solubilize n-alkane (n-C₁₆ and n-C₂₀), isoprenoid (pristane) and aromatic (phenanthrene and anthracene) hydrocarbons and dibutyl phthalate. Removal of the dissolved organic matter (D.O.M.) from the natural samples by activated charcoal and by ultra-violet oxidation resulted in a 50–99 per cent decrease in the amounts of n-alkanes and isoprenoid hydrocarbons solubilized. This decrease was directly related to the amount of D.O.M. removed. The solubilities of the aromatic hydrocarbons were unaffected by the D.O.M. Fulvic acid from a marine sediment, surface active organic material isolated at a chloroform/sea water interface, organic material extracted from a marine sediment by sea water, and organic matter contributed by a municipal sewage effluent, promote n-alkane solubility when added to NaCl solutions and re-enhance solubility when added to organic depleted sea water. The solubility of No. 2 fuel oil increased 2.5 times in the presence of fulvic acid (3.7 mg C/l.) with most of the increase seen in the alkane and isoprenoid components.N-Alkane solubility increases in fulvic acid/saline water solutions with increasing pH and reaches a maximum with respect to ionic strength at I = 0.3. There is evidence to suggest that the mode of solubilization of the hydrocarbons is by incorporation into micelles formed by intermolecular association of the surface active humic-type monomers. The presence of ionic species is a prerequisite for micelle formation.  相似文献