全文获取类型
收费全文 | 138篇 |
免费 | 1篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 14篇 |
废物处理 | 14篇 |
环保管理 | 5篇 |
综合类 | 21篇 |
基础理论 | 21篇 |
污染及防治 | 42篇 |
评价与监测 | 19篇 |
社会与环境 | 5篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 2篇 |
2019年 | 6篇 |
2018年 | 7篇 |
2017年 | 10篇 |
2016年 | 9篇 |
2015年 | 2篇 |
2014年 | 9篇 |
2013年 | 17篇 |
2012年 | 10篇 |
2011年 | 7篇 |
2010年 | 6篇 |
2009年 | 6篇 |
2008年 | 5篇 |
2007年 | 6篇 |
2006年 | 6篇 |
2005年 | 7篇 |
2004年 | 5篇 |
2003年 | 2篇 |
2002年 | 3篇 |
2001年 | 3篇 |
1999年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1961年 | 1篇 |
排序方式: 共有141条查询结果,搜索用时 171 毫秒
101.
Izabela Polowczyk Anna Bastrzyk Tomasz Koźlecki Wojciech Sawiński Piotr Rudnicki Adam Sokołowski Zygmunt Sadowski 《Environmental geochemistry and health》2010,32(4):361-366
The aim of this work is to investigate the application of fly ash adsorbent for removal of arsenite ions from dilute solution
(100–1,000 ppm). Experiments were carried out using material from the “Turów” (Poland) brown-coal-burning power plant, which
was wetted, then mixed and tumbled in a granulator to form spherical agglomerates. Measurements of arsenic adsorption from
aqueous solution were carried out at room temperature and natural pH of fly ash agglomerates, in either a shaken flask or
circulating column, to compare two different methods of contacting solution with adsorbent. Adsorption isotherms of arsenic
were determined for agglomerated material using the Freundlich equation. Kinetic studies indicated that sorption follows a
pseudo-second-order model. Preferable method to carry out the process is continuous circulation of arsenite solution through
a column. 相似文献
102.
Elżbieta Jekatierynczuk-Rudczyk Piotr Zieliński Magdalena Grabowska Jolanta Ejsmont-Karabin Maciej Karpowicz Adam Więcko 《Environmental monitoring and assessment》2014,186(8):5101-5121
This study describes changes in the trophic status of 12 lakes within Suwa?ki Landscape Park (SLP). All of the trophic classifications of the lakes were based on the trophic continuum division. Trophic status was determined by means of multiparameter indices using several diverse criteria. In this study, the assessment of the trophic status of lakes included water quality; abundance and biomass of bacterioplankton, phytoplankton, and zooplankton; and primary production of phytoplankton. The Carlson trophic state index (TSI) describes the level of water fertility and indicated the dominance of moderately eutrophic waters. Lakes Perty, Jeglówek, and Hańcza have a trophic status that indicates mesotrophy (TSI <50). The trophic status of the studied lakes was determined based on the bacterial abundance and clearly showed a lack of oligotrophic lakes in SLP. Based on the number of bacteria, only Lake Szurpi?y can be classified as β-mesotrophic, whereas Lake Linówek can be characterized as hypertrophic with some features typical for humic waters. The greatest value of gross primary production was observed in Lake Linówek (126.4 mg C/m3/h). The phytoplankton trophy index varied from 1.59 to 2.28, and its highest value, which indicated eutrophy, was determined for Lake Udziejek. In the case of Lakes Hańcza, Szurpi?y, Perty, Jeglówek, and Kojle, the index ranged from 1.25 to 1.74, which indicated mesotrophy. The majority of the lakes were classified as mesoeutrophic (1.75–2.24). The highest trophic status was assessed for lakes with a marked dominance of cyanobacteria (Lake Przechodnie, Lake Krajwelek, Lake Udziejek, and Lake Pogorza?ek), which is commonly recognized as an indicator of high trophic status. Considering all of the indices of trophic status, the analysis of rotifer community structure indicates that the studied group of lakes is mesoeutrophic or eutrophic. The values of crustacean zooplankton indices indicated that the trophic status of the studied lakes was close to that determined using a TSI. The parameters of zooplankton abundance and species structure allowed for the observance of changes in the tropic levels of lakes, which are difficult to detect by a chemical assay alone. 相似文献
103.
Stuczynski T Siebielec G Korzeniowska-Puculek R Koza P Pudelko R Lopatka A Kowalik M 《Environmental monitoring and assessment》2009,151(1-4):77-91
Primary objectives of our work were to spatially delineate post industrial areas of the EU-27 and indicate key environmental, social and economic sensitivity issues for these regions. The density of industrial sites within NUTS-x regions for EU-27 countries was assessed by using CORINE 2000 land cover layer. A development of postindustrial society in Europe represents a strong geographic diversity. There are distinct historical and current differences between regions which form major groups, comprising similar internal characteristics and definable trends in environmental and socioeconomic sense. Regions grouped into postindustrial clusters are fundamentally different from the European average, and are facing specific problems related to global market and political changes. Eastern postindustrial regions can be characterized as socially and economically weak, exhibiting high unemployment rate, low GDP, negative population growth and a strong environmental pressure, represented by a high density of dump sites. Most of the western EU postindustrial areas have been successfully recovered and moved into new economy as shown by most of the indicators. In urban postindustrial zones, however, emission sources of pollutants seem to continually be a major problem--not necessarily in terms of exceeding thresholds, but through a remarkable difference in the amount of pollutants produced relative to other regions. 相似文献
104.
Zawadzki J Magiera T Fabijańczyk P Kusza G 《Environmental monitoring and assessment》2012,184(5):3267-3278
In soil magnetometry, two types of measurements are usually performed. The first type is measurements performed on the soil
surface, frequently using an MS2D sensor. The second type includes measurements of magnetic susceptibility carried out in
the soil profile, usually to a depth of about 30 cm. Up to now, such measurement results were analyzed separately. However,
it is possible and advantageous to integrate these two types of measurements. The goal of the study was to integrate measurements
of magnetic susceptibility performed on the soil surface and in the soil profile. More specifically, the goal was to obtain
3-dimensional spatial distributions of magnetic susceptibility of the topsoil horizon. Results show that it is possible to
effectively integrate measurements of magnetic susceptibility performed on the soil surface and in the soil profile. Moreover,
the 3-dimensional spatial distribution that is obtained shows the magnetic susceptibility of the top 20 cm of soil, which
includes the soil horizons where most of the heavy metals are accumulated. The analysis of such a spatial distribution can
be very helpful in delineating areas where the heightened magnetic susceptibility is a result of the influence of anthropogenic
pollution from those areas where it results from lithogenic origin. It is possible to investigate where the volumes of soil
with heightened magnetic susceptibility are located in the soil profile and in this way investigate which characteristic type
of soil profile it is. 相似文献
105.
The paper presents results of screening analysis of all Polish national parks (23) contamination with Cd, Cu, Pb and Zn on the basis of a three-level characteristic of heavy metal presence in Norway spruce stands: accumulation on the needle surface, concentration of heavy metals in spruce needles and concentration of bioavailable heavy metals in the soil. Based on the obtained results, the classification of forest ecosystem hazard in national parks with heavy metals was made using synthetic indicators. It was found out that Babiogórski, Magurski, Ojcowski and Gorczański National Parks, located in the southern part of the country, were the most polluted with heavy metals. It is probably due to a higher industrial activity in this part of Poland and the transboundary transport of air pollutants. A little lower level of pollution was observed in Kampinoski National Park located in the middle of the country. The concentration of heavy metals found in needles from national parks does not seem to be harmful for the health status of the trees. Statistically significant correlation between all parameters, which was found for cadmium--the most mobile of the analysed elements--shows that this metal can be proposed as a marker to reflect present effect of industrial emission on forests. 相似文献
106.
Allen Hope Jordan Decker Piotr Jankowski 《Journal of the American Water Resources Association》2008,44(2):428-435
Abstract: Studies to regionalize conceptual hydrologic models generally require rainfall and river flow data from multiple watersheds. Besides the considerable time (cost) to assemble and process rainfall data for many watersheds, investigators often need to choose from a number of candidate gauges, subjectively weighing the relative importance of proximity and elevation to select a representative rainfall dataset. The Unified Raingauge Dataset (URD) is a gridded daily rainfall dataset that covers the conterminous United States at 0.25 × 0.25 degrees spatial resolution and is available from 1948 to present. The objective of this study was to determine whether uncertainty in daily river flow predictions using the conceptual hydrologic model IHACRES in small to moderate size watersheds (50‐400 km2) in southern California would increase if URD gridded rainfall data were used in place of single rain gauge data to calibrate the model. Rain gauge data were obtained from the gauge nearest the watershed centroid and the gauge closest in elevation to the watershed mean elevation. Results from 20 randomly selected watersheds indicated that IHACRES calibration performance was similar using rainfall data from the URD grids and rain gauge data. There was some evidence of greater uncertainties associated with the URD calibrations in areas where topography may affect rainfall amounts. In contrast to the URD data, monthly gridded data produced by the Parameter‐Elevation Regressions on Independent Slopes Model (PRISM) includes adjustments for elevation and produces gridded values at a finer spatial resolution (4 km2). A limited test on two watersheds demonstrated that scaling the URD daily rainfall estimates to match the PRISM monthly values may improve rainfall estimates and model simulation performance. 相似文献
107.
Towards Participatory Geographic Information Systems for community-based environmental decision making 总被引:3,自引:0,他引:3
Jankowski P 《Journal of environmental management》2009,90(6):1966-1971
This article discusses the potential of Geographic Information Systems (GIS) to become an information technology enabling groups of people to participate in decisions shaping their communities and promoting sustainable use of natural resources. It explains the concept of participation in the context of planning and decision making. In this context Participatory GIS (PGIS) offers tools that can be used to help the public become meaningfully involved in decision making processes affecting their communities. Following an overview of research on PGIS and its current status the article presents two recent studies of PGIS in water resource planning; one involving the use of computer generated maps representing simple information structures and the other involving the use of more sophisticated information tools. The synthesis of both studies provides the bases for discussing the prospects of PGIS to empower citizens in making decisions about their communities and resources. 相似文献
108.
Sylwia Mozia Magdalena Janus Piotr Brożek Sławomira Bering Krzysztof Tarnowski Jacek Mazur Antoni W. Morawski 《Environmental science and pollution research international》2016,23(19):19145-19155
The possibilities of application of a three-step system combining hybrid biological treatment followed by advanced UV/O3 oxidation with in situ generated O3 and membrane separation (ultrafiltration (UF) and nanofiltration (NF)) to treat and reuse the wastewater from an industrial laundry are presented. By the application of a hybrid moving bed biofilm reactor (HMBBR), the total organic carbon concentration was reduced for about 90 %. However, since the HMBBR effluent still contained organic contaminants as well as high concentrations of inorganic ions and exhibited significant turbidity (8.2 NTU), its further treatment before a possible reuse in the laundry was necessary. The UV/O3 pretreatment prior to UF was found to be an efficient method of the membrane fouling alleviation. During UF, the turbidity of wastewater was reduced below 0.3 NTU. To remove the inorganic salts, the UF permeate was further treated during NF. The NF permeate exhibited very low conductivity (27–75 μS/cm) and contained only small amounts of Ca2+ and Mg2+; thus ,it could be reused at any stage of the laundry process. 相似文献
109.
Piotr Rychter 《Journal of environmental science and health. Part. B》2013,48(8):681-692
Although there are many reports on the dangers posed by glyphosate, this herbicide is still one of the most popular and widely used total weed killers. Therefore, great effort should be made to minimize exposure to this herbicide and limit its losses into the environment. The aim of this study was to prepare a new formulation consisted of various molecular weight chitosans with glyphosate and their evaluation toward active substance release, phytotoxicity, and preliminary herbicidal efficiency. The phytotoxicity study of the obtained chitosan/glyphosate formulations was determined based on the Organisation for Economic Co-operation and Development 208 guideline. Among all tested formulations evaluated for phytotoxicity, that containing the highest molecular weight of chitosan was found to be the least toxic, showing simultaneously the most effective herbicidal activity against selected weeds. The release rate of glyphosate from the obtained formulations was dependent on the molecular weight and viscosity of chitosan. 相似文献
110.
Piotr Osyczka Kaja Rola 《Environmental science and pollution research international》2013,20(7):5076-5084
The phenomenon of mass occurrence of the lichen Cladonia rei in extremely contaminated post-smelting slag dumps was studied in relation to metal accumulation capacity of this lichen. The research was aimed to evaluate the relationships between element contents in the thalli and in the corresponding substrate. The study was conducted in terms of a wide spectrum of Zn, Cd, Pb and As contents. The concentrations of these elements in the lichen thalli and substrate samples were measured. Various regression models were considered to find the best fitted one that greatly reflects the dependencies. Various Cladonia species and the hyperaccumulator Diploschistes muscorum were also included in the study for comparison purposes. Specific non-linear regression models described by a power function reflected relationships between Zn and Cd contents in C. rei thalli and in the host substrate in the most reliable way. The relationship for As was also noted, but none significant model was found. Contrarily, Pb concentrations in the thalli varied independently of the metal levels in the substrate. Nevertheless, the concentrations of all measured heavy metals in C. rei thalli are relatively low considering the frequently enormous substrate contamination. Different Cladonia species demonstrated a generally similar accumulation capacity and could be considered as weak accumulators. The restrained accumulation pattern may be one of the important attributes of C. rei which facilitates its colonisation of extremely contaminated dumps. This finding highlights ecological importance of this species as stable and resistant pioneer in such affected sites. 相似文献