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排序方式: 共有165条查询结果,搜索用时 15 毫秒
81.
Valéria R. F. da Silva Sylvia F. Mitraud Maria L. C. P. Ferraz Eduardo H. S. M. Lima Maria Thereza D. Melo Armando J. B. Santos Augusto César C. D. da Silva Jaqueline C. de Castilhos Jamyle A. F. Batista Gustave G. Lopez Frederico Tognin João Carlos Thomé Cecília Baptistotte Berenice M. Gomes da Silva José Henrique Becker Juçara Wanderline Fernanda de Vasconcellos Pegas Gonzalo Róstan Guy Guagni dei Marcovaldi Maria Ângela G. dei Marcovaldi 《Environment, Development and Sustainability》2016,18(6):1541-1558
In the 35 years since its inception, the Brazilian National Program for the Conservation of Marine Turtles (TAMAR) has had great success in protecting the five species of sea turtles that occur in Brazil. It has also contributed significantly to worldwide scientific data and knowledge about these species’ biology, such as life cycles and migration patterns. TAMAR’s conservation strategies have always relied on a variety of environmental education and social inclusion (EESI) activities highly adapted to the socio-environmental evolving contexts of its 25 locations distributed across nine states. Diversity and flexibility are critical to enable timely and effective local responses to existing or potential threats to sea turtles. The intuitive, locally adapted, decentralized, and independent way EESI activities have been carried out have generated positive results in the resolution of specific and evolving local problems through the course of the project. This article brings EESI under the same conceptual framework that underlies its conservation approach by adopting an adaptive threat management framework to organize and qualify its educational and social inclusion interventions according to the main categories of threat addressed by TAMAR. 相似文献
82.
Gary C. Thom Wayne R. Ott 《Journal of the Air & Waste Management Association (1995)》2013,63(11):1157-1158
Recently, various authors1–4 have indicated that a need exists to establish a uniform air pollution index for communities throughout the nation.Although the literature reveals several attempts to develop air pollution indices,5–7 none of these indices has received widespread acceptance by state and local air pollution control agencies, probably because none has received the active support or endorsement of the federal government. We now wish to report that significant progress has been made at the federal level toward the goal of a recommended national air pollution index. 相似文献
83.
Michèle Giugliano Stefano Cernuschi Umberto Ghezzi Mario Grosso 《Journal of the Air & Waste Management Association (1995)》2013,63(12):1405-1414
ABSTRACT The present work outlines the main results of a full-scale study conducted on the utilization of waste tires as auxiliary fuel in cement production. Experimental tests were conducted for determining the influence of shredded tires on combustion conditions, emissions produced, and the characteristics of clinker obtained, for feeding ratios over 35% in terms of total heat input. The addition of tire chips did not lead to any appreciable modification in either the whole process or the quality of clinker produced; gaseous emissions were mostly unaffected, with significant improvements related to the reductions obtained in nitrogen and sulfur oxides concentrations. Experimental findings from tests conducted with tire chips exposed to kiln combustion flue gases compare favorably with the typical burnout times derived from theoretical approaches. These experimental data and calculations to estimate particle trajectories beyond the injection point, through proper theoretical analysis of the kinetic behavior, result in important indications for the shredding operation and for optimum injection modes. 相似文献
84.
Companion M 《Disasters》2008,32(3):399-415
Famine Early Warning Systems (EWS) are reliant on data aggregated from multiple sources. Consequently, they are often insensitive to localized changes in food security status, leading to delayed response or interventions. While price and infrastructural data are often gathered, this case study suggests that local street markets and vendor knowledge are underutilized. Few efforts have been made to monitor systematically the street markets as an indicator of local stressors. Findings from Ethiopia show that knowledge generated by expanding food security indicators in this sector can be used in combination with EWS to facilitate earlier intervention in, or to monitor more effectively, on-going humanitarian crises. Indicators developed from this study are accurate, cost effective, and sensitive to local climatic and food stressors. 相似文献
85.
Marchand G Lalonde M Beaudet Y Boivin G Villeneuve S Pépin C 《Journal of environmental monitoring : JEM》2007,9(8):869-876
Cotton workers are recognized as being at risk of developing occupational lung diseases. Some researchers have identified endotoxins as being a potential etiologic agent for some of the respiratory problems. This study wants to document the concentration of endotoxins found in the ambient air of textile mills where cotton fibers are handled and to identify the processing steps where the highest endotoxins concentrations in the air were found and the one where the relative limit values (RLVs) are exceeded. The 4 mills studied process cotton fibers. All the air samples were analyzed using the chromogenic Limulus Amoebocytes lysate LAL method using a kinetic detection principle based on the IRSST's standard method. In this study, a large variability in the concentrations of endotoxins in the air was observed, depending on the mill, the processing step, and the time. Despite these variations, some processes can be identified as being major generators of endotoxins in the ambient air of the mills. The highest concentrations were measured in the weaving and drawing processes and reached 10,000 EU m(-3) of air. The opening, cleaning, carding, spinning and drawing processes are the other major endotoxins generating processes with concentrations from 24 to 8,700 EU m(-3) of air. The endotoxins concentrations exceeded the RLVs for 55% of the workstations in this project. This study demonstrated that endotoxins levels in the cotton industry are high and appropriate control measures are needed. 相似文献
86.
87.
富氧条件下Ag、Co和Cu/Al2O3选择性催化还原NO的研究 总被引:9,自引:5,他引:9
研究了负载于氧化铝载体上的Ag、Co和Cu 3种金属催化剂在富氧条件下以丙烯为还原剂,选择性催化还原NO的活性,考察了这3种金属单独负载时其负载量与活性的关系,并尝试探讨了这几种金属活性组分之间的一些组合效应.研究表明,单组分催化剂以Ag的活性最佳,达近90%,Co其次,Cu最低.相应的最佳活性温度则是Cu最低,Ag最高.对于单组分Ag催化剂,相同负载量的分步浸渍与一步浸渍样品活性无明显差异.机械混合样品的活性不是单组分样品活性的简单加和.其中,以Ag-Co机械混合样品的活性最佳,最高活性高于80%.复合催化剂一步浸渍与分步浸渍样品的活性均有不同程度的下降,一步浸渍的几个样品的活性下降尤为明显,最高活性只有30%多. 相似文献
88.
Effects of some environmental parameters on catalase activity measured in the mussel (Mytilus galloprovincialis) exposed to lindane 总被引:1,自引:0,他引:1
Mussels (Mytilus galloprovincialis), collected from the Bizerta lagoon, were acclimated for four days to various conditions of temperature, salinity, photoperiod and food supply and then exposed to lindane at a concentration of 40 microg l(-1). Catalase activity, which is a biomarker of exposure to an oxidative stress, was measured in the whole soft tissues of control and assay groups. In control mussels, high temperature, high salinity and light duration significantly increased catalase activity whereas this activity decreased when food, composed of freeze-dried, algae was available. When mussels were treated with lindane, catalase activities were higher than in controls. This increase was significant with temperature, salinity and light duration. The food supply did not change catalase activity, which was always higher compared to controls. Oxidative stress was shown in mussels exposed to lindane. The results highlight the need of considering abiotic parameters in biomonitoring studies, and especially when using catalase as a biomarker. 相似文献
89.
de Oliveira Laís Roberta Galdino dos Santos Filho Derovil Antonio Fraga Tiago José Marques Jucá José Fernando Thomé da Motta Sobrinho Maurício Alves 《Journal of Material Cycles and Waste Management》2021,23(4):1646-1656
Journal of Material Cycles and Waste Management - In this work, food wastes (FWs) and domestic sewage sludge (DSS) were used as raw materials for energy recovery by anaerobic digestion (AD). AD was... 相似文献
90.
M. Gallus R. Ciuraru F. Mothes V. Akylas F. Barmpas A. Beeldens F. Bernard E. Boonen A. Boréave M. Cazaunau N. Charbonnel H. Chen V. Daële Y. Dupart C. Gaimoz B. Grosselin H. Herrmann S. Ifang R. Kurtenbach M. Maille I. Marjanovic V. Michoud A. Mellouki K. Miet N. Moussiopoulos L. Poulain P. Zapf C. George J. F. Doussin J. Kleffmann 《Environmental science and pollution research international》2015,22(22):18185-18196