全文获取类型
收费全文 | 264篇 |
免费 | 4篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 21篇 |
环保管理 | 25篇 |
综合类 | 33篇 |
基础理论 | 79篇 |
污染及防治 | 83篇 |
评价与监测 | 16篇 |
社会与环境 | 10篇 |
灾害及防治 | 1篇 |
出版年
2022年 | 8篇 |
2021年 | 7篇 |
2020年 | 7篇 |
2019年 | 5篇 |
2018年 | 19篇 |
2017年 | 6篇 |
2016年 | 16篇 |
2015年 | 9篇 |
2014年 | 21篇 |
2013年 | 29篇 |
2012年 | 9篇 |
2011年 | 15篇 |
2010年 | 21篇 |
2009年 | 11篇 |
2008年 | 15篇 |
2007年 | 19篇 |
2006年 | 12篇 |
2005年 | 5篇 |
2004年 | 10篇 |
2003年 | 5篇 |
2002年 | 9篇 |
2001年 | 2篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1994年 | 2篇 |
1988年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有270条查询结果,搜索用时 218 毫秒
161.
162.
Bordoni Adele Matejkova Zuzana Chimenti Lorenzo Massai Lorenzo Perito Brunella Dapporto Leonardo Turillazzi Stefano 《Die Naturwissenschaften》2019,106(11-12):1-7
The Science of Nature - Orchids attach their pollinaria (cohesive masses of pollen) to specific body parts of flower visitors, but usually not to the hairy and scaly body parts of flower-visiting... 相似文献
163.
Caserini Stefano Barreto Beatriz Lanfredi Caterina Cappello Giovanni Ross Morrey Dennis Grosso Mario 《Mitigation and Adaptation Strategies for Global Change》2019,24(7):1231-1248
Mitigation and Adaptation Strategies for Global Change - A new process to remove carbon dioxide (CO2) from the atmosphere, by combining commercial industrial technologies with ocean liming and CO2... 相似文献
164.
With the main purpose of evaluating PCDD/F presence and the corresponding mass balance over the emissions control system, an extensive study was performed on a municipal solid waste full scale incinerator equipped with a best available technology flue gas treatment line. Present paper reports the main results obtained, with particular reference to the PCDD/F concentration profiles and mass balances derived for every process unit of the flue gas control system. Total release evaluated for the plant is also outlined compared with data on PCDD/F content of raw waste and with reference values included in most recent guidelines. 相似文献
165.
Land Management Versus Natural Factors in Land Instability: Some Examples in Northern Spain 总被引:1,自引:1,他引:0
Viola Maria Bruschi Jaime Bonachea Juan Remondo Jose Gómez-Arozamena Victoria Rivas Matteo Barbieri Stefano Capocchi Mauro Soldati Antonio Cendrero 《Environmental management》2013,52(2):398-416
The objective of this work is to test a hypothesis formulated on the basis of former results which considers that there might be a “global geomorphic change,” due to activities related to land management and not determined by climate change, which could be causing an acceleration of geomorphic processes. Possible relationships between some geomorphic processes related to land instability (landslides or sediment generation) and potential triggering factors are analyzed in study areas in northern Spain. The analysis is based on landslide inventories covering different periods, as well as the determination of sedimentation rates. Temporal landslide and sedimentation rate trends are compared with different indicators of human activities (land-use change, logging, forest fires) and with potential natural triggers (rainfall, seismicity). The possible influence of the road network in the distribution of landslides is also analyzed. Results obtained show that there is a general increase of both landslide and sedimentation rates with time that cannot be explained satisfactorily by observed rainfall trends and even less by seismicity. Land-use change appears to be by far the main factor leading to land instability, with some changes producing up to a 12-fold increase of landslide rate. A relationship between road network and the spatial distribution of landslides has also been observed. These results do confirm the existence of an acceleration of geomorphic processes in the region, and also suggest that climate-related factors play a limited role in the changes observed. 相似文献
166.
Zauli Sajani S Scotto F Lauriola P Galassi F Montanari A 《Journal of the Air & Waste Management Association (1995)》2004,54(10):1236-1241
The rich regional air-monitoring network of the Emilia-Romagna region of Italy has been used to quantify the spatial variability of the main pollutants within urban environments and to analyze the correlations between stations. The spatial variability of the concentrations of the majority of pollutants within the city was very high, making it difficult to differentiate and characterize the urban environments and to apply legal limits with uniform criteria. On the other hand, the correlations between the fixed-site monitoring stations were high enough for their data to be retained generally very appropriately for controlling temporal trends. Starting from the high correlation level, a procedure was proposed and tested to derive pollution levels, using short-term measurements, such as passive samplers and mobile-station data. The importance of long-term statistics in urban air pollution mapping was emphasized. Treatment of missing data in time series and quality assurance were indicated as possible fields for applications for the correlation properties. 相似文献
167.
Soil pollution due to heavy metals is widespread; on the world scale, it involves about 235 million hectares. The objectives
of this research were to establish the uptake efficiency of nickel by some agricultural crops. In addition, we wanted to establish
also in which part of plants the metal is stored for an eventual use of biomass or for recycling the metal. The experiments
included seven herbaceous crops such as: barley (Hordeum vulgaris), cabbage (Brassica juncea), spinach (Spinacea oleracea), sorghum (Sorgum vulgare), bean (Phaseolus vulgaris), tomato (Solanum lycopersicum), and ricinus (Ricinus communis). We used three levels of treatment (150, 300, and 600 ppm) and one control. At the end of the biological cycle of the crops,
the different parts of plants, i.e., roots, stems, leaves, fruits, or seeds, were separately collected, oven dried, weighed,
milled, and separately analysed. The leaves and stems of spinach showed a very good nickel storage capacity. The ricinus too
proved to be a very good nickel storer. The ability of spinach and ricinus to store nickel was observed also in the leaves
of cabbage, even if with a lower storage capacity. The bean, barley, and tomato, in decreasing order of uptake and storage
capacity, showed a high concentration of nickel in leaves and stems, whereas the sorghum evidenced a lesser capacity to uptake
and store nickel in leaves and stems. The bean was the most efficient in storing nickel in fruits or grains. Tomato, sorghum,
and barley have shown a storage capacity notably less than bean. The bean appeared to be the most efficient in accumulating
nickel in the roots, followed in decreasing order by sorghum, ricinus, and tomato. With regard to the removal of nickel, spinach
was the most efficient as it contains the highest level of this metal per gram of dry matter. The ricinus, cabbage, bean,
sorghum, barley, and tomato evidenced a progressively decreasing efficiency in the removal of nickel. 相似文献
168.
Ahmed Irfan Socci Claudio Pretaroli Rosita Severini Francesca Deriu Stefano 《Environment, Development and Sustainability》2022,24(1):426-453
Environment, Development and Sustainability - In August and October 2016, and January 2017, Central Italy was shaken by four strong earthquakes followed by other earthquake swarms. These disruptive... 相似文献
169.
Leonardo?DapportoEmail author Cristina?Pansolli Stefano?Turillazzi 《Behavioral ecology and sociobiology》2004,56(4):315-321
Various studies indicate that cuticular hydrocarbons (CHCs) act as cues for nestmate recognition in paper wasps and other social insects. A recent study showed that associative nest foundation in Polistes dominulus is mainly performed by foundresses coming from the same locality. In the present study, we induced future foundresses of P. dominulus collected in two different localities to hibernate in the laboratory in aggregates of individuals from the same or different localities. After 2 months of hibernation, foundresses from different localities but from the same experimental cluster did not show any preference to associate, at the time of nest foundation, with individuals coming from the same original locality. The cuticular chemical profiles of individuals from the mixed hibernation clusters were quite similar and significantly different from those of individuals which hibernated with other foundresses from the same locality. These findings suggest that, in this species, mechanisms other than nestmate chemical recognition play a major role in the spring association of gynes during the foundation of a new nest.Communicated by R.F.A. Moritz 相似文献
170.
Air and soil dioxin levels at three sites in Italy in proximity to MSW incineration plants 总被引:10,自引:0,他引:10
Levels of polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) in both air and soil samples were measured at three different sites in Italy, in proximity to three municipal solid waste incinerators (MSWIs) to determine baseline contamination and the contributory role of incinerator emissions. At the first site, located in an agricultural, cattle-breeding, typically flattish area of the Po Valley, the dioxin concentrations had already been measured before the start-up of the new MSWI. These dioxin concentrations were then again measured after two years of continual operation of the incinerator. Despite the presence of the plant, the PCDD/Fs concentrations appear not to have been affected and were found to be in a range of 22-125 fg I-TEQ m(-3) in the air samples and 0.7-1.5 pg I-TEQ g(-1) in the soil samples. The second site is located in an industrial district of the Veneto Region, in the surroundings of an old MSWI that is not equipped with Best Available Technology (BAT) dioxin removal system. The PCDD/Fs concentrations in the air samples were between 144 and 337 fg I-TEQ m(-3). This is a typical range of values for industrial areas, while the soil samples showed contamination levels between 1.1 and 1.4 pg I-TEQ g(-1). The third site lies in the Adige Valley, near a MSWI that has been equipped with BAT for flue gas cleaning. The observed values ranged from 10 to 67 fg I-TEQ m(-3) for the air samples and 0.08-1.2 pg I-TEQ g(-1) for the soil samples. The contributory factors of the varying characteristics of the different areas together with the types of technology adopted at each MSWI plant are discussed. The PCDD/Fs levels are subsequently compared with established values from previous studies. 相似文献