全文获取类型
收费全文 | 115篇 |
免费 | 2篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 2篇 |
环保管理 | 9篇 |
综合类 | 36篇 |
基础理论 | 29篇 |
污染及防治 | 21篇 |
评价与监测 | 10篇 |
社会与环境 | 5篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 1篇 |
2022年 | 5篇 |
2021年 | 8篇 |
2020年 | 5篇 |
2019年 | 3篇 |
2018年 | 5篇 |
2017年 | 3篇 |
2016年 | 5篇 |
2015年 | 3篇 |
2014年 | 6篇 |
2013年 | 10篇 |
2012年 | 6篇 |
2011年 | 10篇 |
2010年 | 5篇 |
2009年 | 11篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2005年 | 7篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 4篇 |
1997年 | 1篇 |
1994年 | 2篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1970年 | 2篇 |
排序方式: 共有117条查询结果,搜索用时 15 毫秒
111.
112.
From the 1980s, Mediterranean shags Phalacrocorax aristotelis desmarestii have become regular summer visitors in the Gulf of Trieste (N-E Italy), as post-breeding movements from Croatian breeding
colonies. To characterize such a recent habit and to explore diving optimality models, we investigate foraging strategies
and diving patterns at different depths, during breeding and post-breeding seasons. Behavioural data were cross-checked with
the species’ diet. Shags foraged on and close to the sea bed, with a prevalent anticipatory breathing strategy. In the Gulf
of Trieste, the shallow depths and low mobility of prey allowed shags to use just the oxygen of the respiratory tract, reducing
the physiological stress for diving. In Croatia, dive costs increased with depth and prey mobility, resulting in a higher
oxygen expenditure that involved also respiratory stores. Such ecological and physiological aspects characterize the Gulf
of Trieste as an optimal area for feeding and restoring from the costs of breeding season incurred in Croatia and could be
the basis of these post-breeding movements. 相似文献
113.
The Science of Nature - 相似文献
114.
115.
Enrico Sciubba 《Ecological modelling》2011,222(8):1347-1353
This paper presents a critical discussion of the so-called “maximum power principle”, often quoted in studies about the energy balance of living systems and also known in the emergy literature as “maximum em-power principle”. Several authors consider this principle highly relevant and some even proposed it as a “fourth law of thermodynamics”. A critical analysis of the original source, namely Alfred Lotka's 1921-22 papers, conducted both in an historical perspective (the connection between Lotka's writings and the ongoing debate at his time) and in a more modern context, leads to a more detailed and less biased assessment. It turns out that in spite of Lotka's very anticipatory and incredibly sharp vision of the possible interconnections between the second law of thermodynamics and evolutionism, doubts arise about the general applicability of his “maximum power principle”. From an accurate analysis of his writings, it can be concluded that: (a) Lotka explicitly and consistently addressed the “optimal use” of the flow of exergy (available energy), and therefore the quantity defined as “em-power” is an incorrect interpretation of Lotka's constrained maximum power principle; (b) “Lotka's principle” can be reformulated within Ziegler's “maximum entropy production” or Prigogine “minimum entropy generation” paradigm only under two different respective sets of rather stringent additional conditions which Lotka was probably already aware of but never explicitly stated. 相似文献
116.
Bosio Morgana de Souza-Chaves Bianca Miguel Saggioro Enrico Mendes Bassin João Paulo Dezotti Márcia W. C. Quinta-Ferreira Maria Emília Quinta-Ferreira Rosa M. 《Environmental science and pollution research international》2021,28(19):23958-23974
Environmental Science and Pollution Research - Contaminants of emerging concern (CECs) are released daily into surface water, and their recalcitrant properties often require tertiary treatment.... 相似文献
117.
Marchese Enrico Bizzotto Elisa Chiara Giubilato Elisa Semenzin Elena Marcomini Antonio 《Environmental science and pollution research international》2022,29(57):85829-85838
Environmental Science and Pollution Research - This study investigated the occurrence of selected metals and metalloids (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn) in radio-dated sediment cores from a coastal... 相似文献