全文获取类型
收费全文 | 155篇 |
免费 | 0篇 |
专业分类
安全科学 | 9篇 |
废物处理 | 2篇 |
环保管理 | 18篇 |
综合类 | 23篇 |
基础理论 | 47篇 |
污染及防治 | 35篇 |
评价与监测 | 12篇 |
社会与环境 | 9篇 |
出版年
2023年 | 2篇 |
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 1篇 |
2018年 | 3篇 |
2017年 | 5篇 |
2016年 | 2篇 |
2015年 | 2篇 |
2014年 | 1篇 |
2013年 | 16篇 |
2012年 | 6篇 |
2011年 | 6篇 |
2010年 | 7篇 |
2009年 | 9篇 |
2008年 | 8篇 |
2007年 | 11篇 |
2006年 | 5篇 |
2005年 | 6篇 |
2004年 | 4篇 |
2003年 | 7篇 |
2002年 | 9篇 |
2001年 | 8篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1996年 | 5篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1977年 | 1篇 |
1973年 | 3篇 |
1971年 | 1篇 |
1968年 | 1篇 |
1967年 | 3篇 |
排序方式: 共有155条查询结果,搜索用时 31 毫秒
151.
Mélanie Brun Christophe Abraham Marc Jarry Jacques Dumas Frédéric Lange Etienne Prévost 《Ecological modelling》2011,222(5):1069-1079
Abundance indicators are required both to assess and to manage wild populations. As new techniques are developed and teams in charge of gathering the data change, data collection procedures (DCPs) can evolve in space and time. How to estimate an homogeneous series of abundance indicator despite changes in DCP? To tackle this question a hierarchical Bayesian modelling (HBM) approach is proposed. It integrates multiple DCPs in order to derive a single abundance indicator that can be compared over space and time irrespective of the DCP used. Compared to single DCP models, it takes further advantage for abundance estimation of the joint treatment of a larger set of spatio-temporal units. After presenting the general formulation of our HBM approach, it is applied to the juvenile Atlantic salmon (Salmo salar L.) population of the River Nivelle (France). Posterior model checking, using χ2 discrepancy measure, do not reveal any inadequacy between the model and the data. Despite a change in the DCP used (successive removals to catch-per-unit of effort), a unique abundance indicator for the 425 spatio-temporal units (site × year) sampled over twenty-four years (1985-2008) is estimated. The HBM approach allows the assessment of precision of the abundance estimates and shows variation between DCPs: a reduction in precision is observed during the most recent years (2005-2008) when only the catch-per-unit of effort DCP was used. The merits and generality of our HBM approach are discussed. We contend it extends previous single DCP models or inter-calibration of two DCPs, and it could be applied to a wide range of specific situations (taxon and DCPs). 相似文献
152.
Kin selection and inclusive fitness theories predict that, in hopeless queenless (QL) groups, competition or cooperation will occur over male production among workers of different patrilines. Competition is expected to involve mutual inhibition of reproduction and to affect fertility advertisement. To examine kin effect on these phenomena, we studied QL groups of honeybee workers comprising three types of kin structure: groups composed of pure single patrilines, groups composed of three mixed patrilines (all originating from colonies headed by single-drone-inseminated queens), and control groups composed of bees originating from naturally mated queens. Global assessment of ovarian development, irrespective of patriline composition, revealed no differences among group types. In contrast, the performance of specific patrilines revealed that, in the three-mixed-patriline groups, some patrilines were reproductively suppressed compared to their performance when reared as a pure single patriline, resulting in an uneven share of reproduction. Analysis of the fertility signal produced by Dufour's gland revealed kin composition effects, which may reflect the bees' competitive efforts. Although patriline effects on worker reproductive superiority have been shown in QL colonies, we were able to investigate specific patriline performance both in competitive and noncompetitive situations here for the first time. The results are consistent with the hypothesis that reproductive and pheromonal competitions in QL groups are affected by the number of subfamilies populating a colony and that these act as coalitions. The results also emphasize that within-colony heterogeneity, in the form of multiple patrilines, has far-reaching consequences on social evolution. 相似文献
153.
Akinsola Gbenga Daniel Awosusi Abraham Ayobamiji Kirikkaleli Dervis Umarbeyli Sukru Adeshola Ibrahim Adebayo Tomiwa Sunday 《Environmental science and pollution research international》2022,29(7):10077-10090
Environmental Science and Pollution Research - The present study assesses the effect of public-private partnerships in energy and financial development on Brazil’s ecological footprint and... 相似文献
154.
Akadiri Seyi Saint Adebayo Tomiwa Sunday Riti Joshua Sunday Awosusi Abraham Ayobamiji Inusa Eshiozemhe Micheal 《Environmental science and pollution research international》2022,29(59):89045-89062
Environmental Science and Pollution Research - Currently, the most crucial economic and ecological issues are related to environmental degradation and sustainability. On this backdrop, this paper... 相似文献
155.
Deka Abraham Cavusoglu Behiye Dube Sindiso 《Environmental science and pollution research international》2022,29(10):14185-14194
Environmental Science and Pollution Research - The current study is aimed at investigating the relationship between the use of renewable energy, the rate of currency exchange, and the rate of... 相似文献