全文获取类型
收费全文 | 2898篇 |
免费 | 20篇 |
国内免费 | 33篇 |
专业分类
安全科学 | 83篇 |
废物处理 | 139篇 |
环保管理 | 269篇 |
综合类 | 523篇 |
基础理论 | 599篇 |
环境理论 | 2篇 |
污染及防治 | 889篇 |
评价与监测 | 242篇 |
社会与环境 | 184篇 |
灾害及防治 | 21篇 |
出版年
2023年 | 30篇 |
2022年 | 88篇 |
2021年 | 105篇 |
2020年 | 51篇 |
2019年 | 43篇 |
2018年 | 100篇 |
2017年 | 105篇 |
2016年 | 121篇 |
2015年 | 74篇 |
2014年 | 113篇 |
2013年 | 170篇 |
2012年 | 135篇 |
2011年 | 167篇 |
2010年 | 117篇 |
2009年 | 110篇 |
2008年 | 123篇 |
2007年 | 114篇 |
2006年 | 77篇 |
2005年 | 118篇 |
2004年 | 158篇 |
2003年 | 157篇 |
2002年 | 102篇 |
2001年 | 75篇 |
2000年 | 34篇 |
1999年 | 41篇 |
1998年 | 15篇 |
1997年 | 28篇 |
1996年 | 21篇 |
1995年 | 27篇 |
1994年 | 23篇 |
1993年 | 17篇 |
1992年 | 14篇 |
1991年 | 21篇 |
1990年 | 9篇 |
1989年 | 13篇 |
1988年 | 5篇 |
1987年 | 10篇 |
1986年 | 12篇 |
1985年 | 10篇 |
1984年 | 14篇 |
1983年 | 15篇 |
1982年 | 10篇 |
1981年 | 16篇 |
1979年 | 14篇 |
1978年 | 9篇 |
1977年 | 7篇 |
1976年 | 10篇 |
1975年 | 9篇 |
1974年 | 13篇 |
1973年 | 11篇 |
排序方式: 共有2951条查询结果,搜索用时 15 毫秒
991.
Francesco Ciliberti Job de HaanGerard de Groot Pierpaolo Pontrandolfo 《Journal of Cleaner Production》2011,19(8):885-894
The benefits of corporate social responsibility (CSR) affect the entire supply chains a firm participates in. However, not every firm is in a position to force the implementation of CSR in its supply chains as some, especially small and medium-sized enterprises (SMEs), lack the necessary power. Chain directors can implement it acting as a principal, whereas the other chain members can act as agents.In the principal-agent framework, two main problems occur due to information asymmetry: adverse selection and moral hazard. This paper examines how a code of conduct (i.e. Social Accountability 8000) can help address the principal-agent problem, for SMEs, between chain directors and partners. The research method involves four case studies on CSR practices as implemented by Italian and Dutch SMEs within their supply chains. 相似文献
992.
Martínez Jaxiry Shamara Barroso González Antonia Sandoval López Mónica Cerro Ayala Fabricio Espejel Mijangos Jesús Cárdenas de Jesús Treviño Reséndez José Vöng Yunny Meas Rocha Juan Manríquez Bustos Erika Bustos 《Environmental science and pollution research international》2022,29(28):42130-42145
Environmental Science and Pollution Research - One of the most widely used antibiotics is amoxicillin (AMX), which is the most widely used in humans and animals, but it is discharged metabolically... 相似文献
993.
Almeida Aleska Kaufmann de Almeida Isabel Kaufmann Guarienti José Antonio Gabas Sandra Garcia 《Environmental science and pollution research international》2022,29(6):8126-8172
Environmental Science and Pollution Research - The time of concentration (Tc) is the main hydrological parameter used to characterize the response of a given Hydrological Response Unit (HRU) to a... 相似文献
994.
Leite Marilaine Cristina Marques de Araujo Maycon Anderson da Silva de Paiva Wesller Camargos Liliane Santos Martins Aline Redondo 《Environmental science and pollution research international》2022,29(5):6900-6910
Environmental Science and Pollution Research - The indiscriminate use of fertilizers and chemical pesticides can lead to boron contamination of the soil. Decontamination in general is expensive and... 相似文献
995.
Environment Systems and Decisions - Early warning systems for weather events are becoming widespread as technological capacities develop. For warnings to be effective, they must allow enough lead... 相似文献
996.
Kevin V. Thomas Felipe M. Araújo da Silva K.H. Langford Afonso D. Leão de Souza L. Nizzeto A.V. Waichman 《Journal of the American Water Resources Association》2014,50(2):302-308
Pharmaceuticals and illicit drugs are contaminants that are generally ubiquitous in wastewater treatment plant effluents with their release into the environment being well understood in North America, Europe, and Asia. There is, however, less information on the release of human pharmaceuticals and illicit drugs from regions undergoing rapid land use, economical, and social changes, such as Brazil. This encompasses many areas in the tropical zone where releases of emerging contaminants may impact pristine, bio‐diversity rich ecosystems. In this study, the occurrence of human pharmaceuticals and the illicit drug cocaine was determined in the Rio Negro and two of its tributaries that receive large amounts of untreated sewage, the Igarapé Mindu and the Igarapé do 40, passing through the city of Manaus, Brazil. In addition to cocaine and its metabolite, benzoylecognine, propranolol, diclofenac, amitriptyline, carbamazepine, carbamazepine‐epoxide, citalopram, metoprolol, carisoprolol, and sertraline were all detected in two urban tributaries at low ng/l concentrations similar to those typically found in urban surface waters. Concentrations in the Rio Negro were typically lower than detection limits due to the large level of dilution, although traces of a range of pharmaceuticals were detected in the Rio Negro in proximity of the confluence of the urban streams. The data represent new information on the emissions of pharmaceuticals from a newly industrialized region of Brazil. 相似文献
997.
The aim of this article is to shed new light on which dimensions compose sustainable purchase intention (SPI) with the purpose of understanding what moves consumers to a potentially more sustainable behaviour. Even though several studies have researched which factors influence consumer’s intention to buy in a more sustainable way, no comparable research in consumer behaviour was found studying these dimensions in a triple bottom line perspective (profit, people, and planet) that could also provide future corporate and academic applications. Therefore, this article proposes a new construct – Consumers’ Perception on SPI, defined using the C-OAR-SE procedure and measured using exploratory and confirmatory factor analysis using two different samples. In-depth interviews and online survey to actual consumers of sustainable products were undertaken in partnership with a sustainable project using its database, guaranteeing that real consumers’ perceptions were gathered for this study. The construct is proposed with two dimensions (measured by nine items): Accessibility (including facets such as product lower pricing, availability in stores, and being sold within a convenient proximity to home) and Trust (including consumers needs such as: to get to know and trust products through understanding the labels; to have had good experiences in the past or simply to have new trial opportunities). Theoretical and practical implications of the findings are also discussed. 相似文献
998.
999.
Jean Rouchaud Marc Metsue Fabrice Gustin Frans van de Steene Christian Pelerents Frans Benoit 《毒物与环境化学》2013,95(1-4):215-226
For the protection of early and summer cauliflower and brussels sprouts crops against root fly, the insecticide chlorpyrifos was applied at planting onto soil around the stem of the plant, or in the planting line. In the soil, chlorpyrifos (1) was transformed into the insecticide metabolites oxon, 0,0‐diethyl‐0‐(3,5,6‐tri‐chloro‐2‐pyridinyl) phosphate (2), and 3,5,6‐trichloro‐2‐pyridinol (3). The soil half life time of chlorpyrifos could be 2.8 times greater (42 days relative to 15 days) when the field history as to cauliflower monoculture and insecticide treatments was short (1 year), than when it was long (8 years). Rains and season also had cumulative effects on the chlorpyrifos soil half life times. In the leaves of cabbage, chlorpyrifos and compound 3 were observed at concentrations which were higher, especially when their soil concentrations were high. Chlorpyrifos and compounds 2 and 3 however were not detected in the “flower” of cauliflower, nor in the brussels sprouts itself, the limit of sensitivity being 0.02 ppm of fresh weight. 相似文献
1000.
Lieven Bervoets Machteld de Wit Ward de Cooman Piet Seuntjens Rudolf Verheyen 《毒物与环境化学》2013,95(1-2):233-246
Assessing sediment quality requires sampling designs which address variability. Often however, only one sample or composited sample is collected at a sample site. Existing studies on sediment variability or sampling strategies primarily concern lake or marine sediments. Two rivers and one canal were sampled to assess sediment variability. Further, it was determined if sediment contamination in running water could be predicted by using visual criteria and/or knowledge of the presence of depositional and erosion areas. Metal concentrations and sediment characteristics were measured in different visually distinct areas of the river. At all sample sites the coefficient of variance was relatively high for most sediment characteristics (1.4‐ > 100%) and metal levels (15.3–63.6%). In one river the majority of sediment characteristics variation was between two sediment types and detected by visually distinct differences. Significant differences in cadmium and zinc concentrations were also detected. Contrary to what was expected, cadmium, and zinc levels were highest in the coarse fraction. No differences were found in the second river. In the canal a greater concentration of fine grained sediments and metals were found in the deep areas. It was not possible to predict sediment areas with the highest levels of metal contamination using visual criteria or knowledge of the erosion and sedimentation pattern of the river. 相似文献