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381.
文中对ABR反应器处理中药废水的效果及运行特性进行了研究。研究表明,在实验范围内,反应器的COD去除率在79%上,即使在有机负荷为5.05kgCOD/(m^3·d)时,COD去除率也可以达到75%以上:当水力停留时间为24h,提高有机负荷ABR反应器的COD去除率先升高后降低;BOD/COD的比值可达0.50。 相似文献
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Thais Q. Morcatty Jonathan C. Bausch Macedo K. Anne-Isola Nekaris Qingyong Ni Carlos C. Durigan Magdalena S. Svensson Vincent Nijman 《Conservation biology》2020,34(6):1525-1535
Seizures of hundreds of jaguar heads and canines in Central and South America from 2014 to 2018 resulted in worldwide media coverage suggesting that wildlife traffickers are trading jaguar body parts as substitutes for tiger parts to satisfy the demand for traditional Asian medicine. We compiled a data set of >1000 seized wild cats (jaguar [Panthera onca], puma [Puma concolor], and ocelot [Leopardus pardalis]) from 19 Central and South American countries and China. We ran generalized additive mixed models to detect trends in wild-cat seizures from 2012 to 2018 and assess the effects of socioeconomic factors of source countries and between those countries and China on the number of wild cats seized. Jaguar seizures increased over time, and most of the seized jaguar pieces were canines (1991 of 2117). Around 34% (32 of 93) of the jaguar-part seizure reports were linked with China, and these seizures contained 14-fold more individuals than those intended for domestic markets. Source countries with relatively high levels of corruption and Chinese private investment and low income per capita had 10–50 times more jaguar seizures than the remaining sampled countries. The number of Chinese residents in Central and South America was not significantly related to the number of jaguars seized. No socioeconomic factors influenced the seizures of puma and ocelots. Legal market chains may provide structure for the illegal chain; thus, the influx of illegal jaguar products is potentially a side effect of the economic partnership between Central and South American countries and China. Poverty and high levels of corruption in the source countries may motivate local people to engage in illegal activities and contribute to the growth of this trade. Supply-side interventions to curb this threat to Neotropical wild cats may include improved training for officials and promotion of governance and the value of protecting these animals to local people. 相似文献
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Ian Davis 《Environmental Hazards》2016,15(3):269-278
This ‘reflection’ describes conflicting experiences, drawn from the author’s career in varied aspects of disaster risk management and recovery (1973–2016) delving into his memory, Ian Davis explores conflicts he has felt in four parallel roles he has adopted as architect, NGO board member, academic and the personal challenges he has faced working within the humanitarian sector. After describing these encounters, some practical solutions are suggested. The reflection concludes with a suggestion that at the root of these conflicts there is a need for people working in the humanitarian field to become more accountable in a downward direction towards those they seek to serve, who often lack power and influence. These include an architect’s clients, the beneficiaries of an NGO’s concern, an academic’s students or trainees and more broadly an ethical challenge that the author strives after, to regard his work as a vocation, highlighting the need for service to others rather than self-promotion. 相似文献
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中药制药过程的职业危害与控制措施 总被引:2,自引:1,他引:1
建国以来,我国中药制药生产技术发生了巨大的变化,经历了上个世纪六七十年代的中药生产“机械化”、八十年代的中药制药“工业化”和九十年代提出的以“现代化”为目标的三个阶段。目前中药行业正处于传统工艺与现代技术相结合的新发展阶段,制药工艺复杂,制药工序中潜在的职业危害因素较多。本文通过分析常见的中药制药过程,找出其中可能产生职业危害的工序、环节,并提出了相应的控制措施,以期达到降低或消除制药行业作业职业危害的目的。 相似文献
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江苏省某企业中药污水处理工程采用调节池+深度水解+三级接触氧化+沉淀的处理工艺,该工艺运行费用低,处理效果稳定,便于管理,操作简单,易于维护。运行过程中,进水COD为2 500~3 500 mg/L,BOD5为1 200~1 500 mg/L,其出水各项指标均达到《污水综合排放标准》(GB 8978-1996)中的一级排放标准。 相似文献
390.
《防灾减灾工程学报》的被引分析 总被引:1,自引:1,他引:0
利用我国优秀博硕论文全文数据库,探讨了《防灾减灾工程学报》(以下简称《学报》)的被引与共被引。结果表明,《学报》的载文具有较高的学科前沿性、理论性、实用性与综合性;《学报》的博硕论文被引与共被引次数多、层次高,学术影响的学科范围广;防灾减灾工程与土木工程、岩土工程、地震工程、地质工程等多种工程相关性强;《学报》对我国博硕研究生教育情报贡献力大。 相似文献