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排序方式: 共有277条查询结果,搜索用时 31 毫秒
51.
Schirmer Waldir Nagel Stroparo Erivelton César Gueri Matheus Vitor Diniz Capanema Marlon André Mazur Douglas Luiz Jucá José Fernando Thomé Martins Kelly Geronazzo 《Journal of Material Cycles and Waste Management》2022,24(5):2041-2053
Journal of Material Cycles and Waste Management - Biofilters have been recognized as a key technology in the mitigation of greenhouse gases (GHG) emitted by landfills. This study aimed to evaluate... 相似文献
52.
Ali A. H. Dakroury G. A. Hagag M. S. Abdo Sh. M. Allan K. F. 《Journal of Polymers and the Environment》2022,30(3):1170-1188
Journal of Polymers and the Environment - In this study, Acrylic acid (AA), acrylamide (AM), and 16,16-dimethylheptadecan-1-amine (PJM-T) were copolymerized using gamma irradiation with 60Co... 相似文献
53.
Allan Gomez-Flores Gukhwa Hwang Sadia Ilyas Hyunjung Kim 《Frontiers of Environmental Science & Engineering》2022,16(3):31
54.
Leite Luan de Souza Ogura Allan Pretti dos Santos Danilo Vitorino Espíndola Evaldo Luiz Gaeta Daniel Luiz Antonio 《Environmental science and pollution research international》2022,29(24):35800-35810
Environmental Science and Pollution Research - Algal organic matter (AOM) in water reservoirs is a worldwide concern for drinking water treatment; once it is one of the main precursors for... 相似文献
55.
Birds feeding on landfill sites cause problems in terms of nuisance to neighbors, flight safety, a threat to public health,
and affecting the day to day site operation. A number of control measures exist to deter problem species; however, research
into their effectiveness across sites and for multiple species has been limited. We use a modeling approach in order to assess
the effectiveness of nine techniques — pyrotechnics, hand-held distress calls, static distress calls, blank ammunition, a
combination of blank and lethal use of ammunition, the use of falcons, the use of hawks, wailers and helium-filled bird-scaring
kites — at deterring three commonly recorded species — the Black-headed Gull (Larus ridibundus), the Herring Gull (Larus argentatus) and the Lesser Black-backed Gull (Larus fuscus) — from six landfill sites across the United Kingdom. The use of distress calls, falconry, and combinations of lethal and
nonlethal use of ammunition were the most effective techniques for initially deterring birds from these sites. However, when
habituation is considered, there is a clear difference between techniques such as falconry, which have a lethal aspect and
may act to reinforce the deterrence, and the use of techniques such as distress calls, which do not. However there are problems
related to legislation and public perception when lethal techniques are used. 相似文献
56.
Dani Degenhardt David Humphries Allan J. Cessna Paul Messing Pascal H. Badiou Renata Raina 《Journal of environmental science and health. Part. B》2013,48(7):631-639
Glyphosate [N-(phosphonomethyl)glycine] is the active ingredient of several herbicide products first registered for use in 1974 under the tradename Roundup. The use of glyphosate-based herbicides has increased dramatically over the last two decades particularly in association with the adoption of glyphosate-tolerant crops. Glyphosate has been detected in a range of surface waters but this is the first study to monitor its fate in prairie wetlands situated in agricultural fields. An ephemeral wetland (E) and a semi-permanent wetland (SP) were each divided into halves using a polyvinyl curtain. One half of each wetland was fortified with glyphosate with the added mass simulating an accidental direct overspray. Glyphosate dissipated rapidly in the water column of the two prairie wetlands studied (DT50 values of 1.3 and 4.8 d) which may effectively reduce the impact of exposure of aquatic biota to the herbicide. Degradation of glyphosate to its major metabolite aminomethylphosphonic acid (AMPA) and sorption of the herbicide to bottom sediment were more important pathways for the dissipation of glyphosate from the water column than movement of the herbicide with infiltrating water. Presently, we are not aware of any Canadian guidelines for glyphosate residues in sediment of aquatic ecosystems. Since a substantial portion of glyphosate entering prairie wetlands will become associated with bottom sediments, particularly in ephemeral wetlands, guidelines would need to be developed to assess the protection of organisms that spend all or part of their lifecycle in sediment. 相似文献
57.
Koala Conservation Policy Process: Appraisal and Recommendations 总被引:1,自引:0,他引:1
Tim W. Clark Nicole Mazur † Steven J. Cork ‡ Steve Dovers § and Ronnie Harding 《Conservation biology》2000,14(3):681-690
58.
59.
Real-time examination of the fetal heart in 350 pregnancies has allowed a composite picture of normal fetal cardiac anatomy to be established and echocardiographic interpretation has been confirmed by anatomical studies. Two echocardiographic sections are readily obtainable and are suggested as applicable to routine scanning but the specialist nature of interpreting abnormalities is stressed. Six abnormalities have been suspected during the study and five confirmed anatomically or at cardiac catheterization. In view of the low incidence of congenital heart disease in a normal obstetric population, high risk groups should perhaps be selected for cardiac scanning at the present time. These include mothers of previously affected babies, diabetic mothers and certain abnormalities of pregnancy. Fetal ascites is particularly important, being present in three of the four proven cases of cardiac abnormality. 相似文献
60.
Wang S Allan RD Hill AS Kennedy IR 《Journal of environmental science and health. Part. B》2002,37(6):521-532
In order for grain handlers and traders to reliably estimate residues of grain protectants in the field, antibody-based rapid tests were developed for carbaryl (1-naphthyl methylcarbamate) and methoprene [isopropyl (E,E)-(RS)-11-methoxy-3,7,11-trimethyldodeca-2,4-dienoate]. To complement the rapid analysis, a simple and rapid extraction technique was developed. In these tests, a pesticide-containing methanol extract of the grain sample and an enzyme-labeled component are added to precoated strips. After a brief incubation, the strips are washed and a substrate/chromogen for the enzyme is added. The color developed is stopped by acidification and the results are read either by eye or in a portable field photometer. The overall test time is under 20 minutes. For carbaryl, the test had a limit of detection of 4.5 ppb (1.1 ppm in grain), while the methoprene test had a limit of detection of 4 ppb (1 ppm in grain) based on the lower datum point, which is 15% inhibition, in the standard curves. Both assays can be used as a screening test for carbaryl and methoprene in animal feed grains. 相似文献