全文获取类型
收费全文 | 405篇 |
免费 | 1篇 |
专业分类
安全科学 | 56篇 |
废物处理 | 15篇 |
环保管理 | 9篇 |
综合类 | 44篇 |
基础理论 | 44篇 |
污染及防治 | 164篇 |
评价与监测 | 45篇 |
社会与环境 | 28篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 5篇 |
2022年 | 4篇 |
2021年 | 8篇 |
2020年 | 6篇 |
2019年 | 18篇 |
2018年 | 21篇 |
2017年 | 24篇 |
2016年 | 25篇 |
2015年 | 8篇 |
2014年 | 21篇 |
2013年 | 60篇 |
2012年 | 26篇 |
2011年 | 20篇 |
2010年 | 8篇 |
2009年 | 6篇 |
2008年 | 14篇 |
2007年 | 17篇 |
2006年 | 11篇 |
2005年 | 9篇 |
2004年 | 19篇 |
2003年 | 15篇 |
2002年 | 9篇 |
2001年 | 5篇 |
2000年 | 7篇 |
1999年 | 2篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1984年 | 2篇 |
1982年 | 1篇 |
1979年 | 2篇 |
1968年 | 1篇 |
1967年 | 1篇 |
1965年 | 3篇 |
1964年 | 1篇 |
1963年 | 3篇 |
1962年 | 3篇 |
1961年 | 1篇 |
1960年 | 3篇 |
1959年 | 1篇 |
1958年 | 1篇 |
1931年 | 1篇 |
排序方式: 共有406条查询结果,搜索用时 31 毫秒
401.
The charcoal kilns under study were situated in the Polish Western Carpathiens (Bieszczady). Aromatic hydrocarbon products of wood burning in the kilns were identified. The rate of decomposition of beech leaves was relatively high as environmental conditions enhanced decomposition. The intensity of soil metabolism is increasing during a long-term exposure to smoke, which is one of the indicators of anthropogenic disturbance resulting from organic factors. 相似文献
402.
The complexity of nectar: secretion and resorption dynamically regulate nectar features 总被引:2,自引:0,他引:2
In this paper, we review the phenomenon of nectar resorption, focusing on its physiological and ecological meaning. Nectar
resorption is a phenomenon that has long been known but was rarely reported until the1990s. It has more recently been demonstrated
in several species by various direct and indirect methodologies. It has generally been demonstrated in senescent flowers as
a phenomenon separate in time from, and independent of, nectar secretion. The significance of this type of resorption is generally
recognized as a resource-recovery strategy, recycling at least some materials invested in nectar production. Nevertheless,
nectar resorption can occur concomitantly with nectar secretion. Nectar production is therefore best considered as a unified
process comprising nectar secretion and resorption. The modulation of these two opposite phases allows nectar concentration
to be maintained in a range suitable for pollinators (nectar homeostasis). The mechanism of nectar resorption at the cell
level has received little attention, and its molecular basis can only be hypothesized on the basis of recent studies concerning
sugar sensing. 相似文献
403.
Mazur Karolina E. Borucka Aleksandra Kaczor Paulina Gądek Szymon Bogucki Rafał Mirzewiński Dariusz Kuciel Stanisław 《Journal of Polymers and the Environment》2022,30(6):2341-2354
Journal of Polymers and the Environment - In the study, polylactide-based (PLA) composites modified with natural particles (wood, bamboo, and cork) and with different levels of infilling (100%,... 相似文献
404.
Environmental Geochemistry and Health - The authors present the results of chemical and mineralogical analyses of urban dusts collected in the spring seasons of 2015 and 2016 in three different... 相似文献
405.
Jabłońska-Trypuć Agata Wydro Urszula Wołejko Elżbieta Pietryczuk Anna Cudowski Adam Leszczyński Jacek Rodziewicz Joanna Janczukowicz Wojciech Butarewicz Andrzej 《Environmental geochemistry and health》2021,43(9):3683-3698
Environmental Geochemistry and Health - Leachate from landfills is a product of complex biological and physicochemical processes occurring during waste storage. In the present study, the toxicity... 相似文献
406.
Wielgosiński G 《Journal of the Air & Waste Management Association (1995)》2011,61(5):511-526
The first reports that it is possible to emit dioxins from the heat and power generation sector are from the beginning of the 1980s. Detailed research proved that the emission of dioxins might occur during combustion of hard coal, brown coal, and furnace oil as well as coke-oven gas. The emission of dioxins occurs in wood incineration; wood that is clean and understood as biomass; or, in particular, wood waste (polluted). This paper thoroughly discusses the mechanism of dioxin formation in thermal processes, first and foremost in combustion processes. The parameters influencing the quantity of dioxins formed and the dependence of their quantity on the conditions of combustion are highlighted. Furthermore, the methods of reducing dioxin emissions from combustion processes (primary and secondary) are discussed. The most efficacious methods that may find application in the heat and power generation sector are proposed; this is relevant from the point of view of the implementation of the Stockholm Convention resolutions in Poland with regard to persistent organic pollutants. 相似文献