全文获取类型
收费全文 | 92篇 |
免费 | 1篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 2篇 |
环保管理 | 11篇 |
综合类 | 11篇 |
基础理论 | 26篇 |
污染及防治 | 16篇 |
评价与监测 | 12篇 |
社会与环境 | 11篇 |
灾害及防治 | 1篇 |
出版年
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 2篇 |
2018年 | 3篇 |
2017年 | 4篇 |
2016年 | 2篇 |
2015年 | 1篇 |
2014年 | 8篇 |
2013年 | 10篇 |
2012年 | 2篇 |
2011年 | 11篇 |
2010年 | 3篇 |
2009年 | 8篇 |
2008年 | 13篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2005年 | 4篇 |
2004年 | 8篇 |
2003年 | 1篇 |
2001年 | 2篇 |
1992年 | 2篇 |
1965年 | 1篇 |
排序方式: 共有94条查询结果,搜索用时 281 毫秒
91.
92.
Raymond I. Carruthers Marie K. Franc Wai S. Gee Allard A. Coss�� Brenda J. Grewell John J. Beck 《Chemoecology》2011,21(4):253-259
The flea beetle Altica litigata (Chrysomelidae) is an insect herbivore to plants within the families Lythraceae and Onagraceae, including ornamentals such
as crape myrtle, Lagerstroemia spp. This insect is important both as a pest species and as a naturally occurring biological control agent due to its aggregate
feeding behavior, which typically results in severe defoliation of the host plant. Despite the negative economic impact to
ornamentals and contrary benefits as a biological control agent, there are few reports on the semiochemical communication
of this family of insects. Uruguayan primrose-willow (Ludwigia hexapetala) is an invasive aquatic weed in California and serves as a host to A. litigata. To better characterize this association, the volatile emissions of A. litigata were collected while the flea beetles were: in containers by themselves, in containers with L. hexapetala leaves, in situ on L. hexapetala leaves in a growth chamber, and in situ on L. hexapetala leaves in the field. For comparison, the volatile emissions of A. litigata associated with two subspecies of creeping water primrose (L. peploides) were also evaluated. Two himachalene-type sesquiterpenes, showing the same carbon skeleton as compounds previously reported
from Aphthona flava and Epitrix fuscula, were detected as volatiles from A. litigata. 相似文献
93.
Introduction
Certain vehicle features can help drivers avoid collisions and/or protect occupants in the event of a crash, and therefore, might play an important role when deciding which vehicle to purchase. The objective of this study was to examine the importance attributed to key vehicle features (including safety) that drivers consider when buying a car and its association with age and gender.Methods
A sample of 2,002 Canadian drivers aged 18 years and older completed a survey that asked them to rank the importance of eight vehicle features if they were to purchase a vehicle (storage, mileage, safety, price, comfort, performance, design, and reliability). ANOVA tests were performed to: (a) determine if there were differences in the level of importance between features and; (b) examine the effect of age and gender on the importance attributed to these features.Results
Of the features examined, safety and reliability were the most highly rated in terms of importance, whereas design and performance had the lowest rating. Differences in safety and performance across age groups were dependent on gender. This effect was most evident in the youngest and oldest age groups.Conclusions
Safety and reliability were considered the most important features. Age and gender play a significant role in explaining the importance of certain features.Impact on Industry
Targeted efforts for translating safety-related information to the youngest and oldest consumers should be emphasized due to their high collision, injury, and fatality rates. 相似文献94.
Gamboa-Loira Brenda Mérida-Ortega Ángel Rothenberg Stephen J. Cebrián Mariano E. López-Carrillo Lizbeth 《Environmental science and pollution research international》2022,29(59):89002-89013
Environmental Science and Pollution Research - This study aims to assess breast cancer (BC) association with metals and whether polymorphisms in CYP1A1, CYP1B1, GSTM1 and GSTT1 act as confounders... 相似文献