全文获取类型
收费全文 | 670篇 |
免费 | 7篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 27篇 |
废物处理 | 26篇 |
环保管理 | 60篇 |
综合类 | 82篇 |
基础理论 | 147篇 |
环境理论 | 4篇 |
污染及防治 | 113篇 |
评价与监测 | 46篇 |
社会与环境 | 173篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 7篇 |
2022年 | 34篇 |
2021年 | 24篇 |
2020年 | 10篇 |
2019年 | 20篇 |
2018年 | 37篇 |
2017年 | 28篇 |
2016年 | 63篇 |
2015年 | 22篇 |
2014年 | 60篇 |
2013年 | 78篇 |
2012年 | 44篇 |
2011年 | 39篇 |
2010年 | 49篇 |
2009年 | 46篇 |
2008年 | 22篇 |
2007年 | 29篇 |
2006年 | 17篇 |
2005年 | 22篇 |
2004年 | 5篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2000年 | 7篇 |
1996年 | 4篇 |
1995年 | 1篇 |
1993年 | 1篇 |
1990年 | 2篇 |
1958年 | 3篇 |
1957年 | 1篇 |
1956年 | 1篇 |
排序方式: 共有680条查询结果,搜索用时 62 毫秒
671.
Vagisha Pruthi Nimrah Abbasi Varsha Thakur Shiri Shinar Anne O’Connor Rachel Silver Tasha Simpson Tim Van Mieghem 《黑龙江环境通报》2023,43(7):881-888
Objective
Ultrasound assessment of the fetal anatomy and fetal echocardiography are feasible in the first trimester of pregnancy. This study was designed to assess the performance of a comprehensive fetal anatomy assessment in a high-risk population at a tertiary fetal medicine unit.Methods
A retrospective review of high-risk patients undergoing comprehensive fetal anatomy ultrasound assessment between 11 weeks and 13 + 6 weeks of gestation was conducted. Findings of the early anatomy ultrasound scan were compared with those of the second trimester anatomy scan, and birth outcomes or post-mortem results.Results
Early anatomy ultrasounds were performed in 765 patients. The sensitivity of the scan for detecting fetal anomalies compared to the birth outcome was 80.5% (95% CI 73.5–86.3) and specificity was 93.1% (95%CI 90.6–95.2). Positive and negative predictive values were 78.5% (95% CI 71.4–84.6) and 93.9% (95% CI 91.4–95.8), respectively. The most missed and overdiagnosed abnormalities were ventricular septal defects. The second trimester ultrasound had sensitivity of 69.0% (95% CI 55.5–80.5) and specificity of 87.5% (95% CI 84.3–90.2).Conclusions
In a high-risk population, early assessments had similar performance metrics as the second trimester anatomy ultrasound. We advocate for a comprehensive fetal assessment in the care of high-risk pregnancies. 相似文献672.
D’Adamo Idiano Lupi Gianluca Morone Piergiuseppe Settembre-Blundo Davide 《Environmental science and pollution research international》2022,29(31):46620-46633
Environmental Science and Pollution Research - The transition to a circular economy is a key concern for the fashion industry. The emerging second-hand market is a practice that could enable the... 相似文献
673.
Takuissu G. R. Kenmoe S. Ndip L. Ebogo-Belobo J. T. Kengne-Ndé C. Mbaga D. S. Bowo-Ngandji A. Oyono M. G. Kenfack-Momo R. Tchatchouang S. Kenfack-Zanguim J. Lontuo Fogang R. Zeuko’o Menkem E. Kame-Ngasse G. I. Magoudjou-Pekam J. N. Nkie Esemu S. Veneri C. Mancini P. Bonanno Ferraro G. Iaconelli M. Suffredini E. La Rosa G. 《Food and environmental virology》2022,14(3):223-235
Food and Environmental Virology - Hepatitis E virus (HEV) is responsible for acute hepatitis in humans, through foodborne, zoonotic, and waterborne transmission routes. This study aimed to assess... 相似文献
674.
Onubi Hilary Omatule Yusof Nor’Aini Hassan Ahmad Sanusi 《Environmental science and pollution research international》2022,29(4):5431-5444
Environmental Science and Pollution Research - Studies have proven that client satisfaction (CS) is greatly affected by the nature of construction practices on site. However, not much attention has... 相似文献
675.
Abdel Maksoud M. I. A. Fahim Ramy Amer Bedir Ahmed G. Osman Ahmed I. Abouelela Marwa Mohamed El-Sayyad Gharieb S. Elkodous M. Abd Mahmoud Amira S. Rabee Maisara M. Al-Muhtaseb Ala’a H. Rooney David W. 《Environmental Chemistry Letters》2022,20(1):519-562
The rapid urbanization and industrialization is causing worldwide water pollution, calling for advanced cleaning methods. For instance, pollutant adsorption on magnetic oxides is efficient and very practical due to the easy separation from solutions by an magnetic field. Here we review the synthesis and performance of magnetic oxides such as iron oxides, spinel ferrites, and perovskite oxides for water remediation. We present structural, optical, and magnetic properties. Magnetic oxides are also promising photocatalysts for the degradation of organic pollutants. Antimicrobial activities and adsorption of heavy metals and radionucleides are also discussed.
相似文献676.
Rjiba-Touati Karima Hamdi Hiba M’nassri Asma Guedri Yosra Mokni Moncef Abid Salwa 《Environmental science and pollution research international》2022,29(10):14111-14120
Environmental Science and Pollution Research - Bromuconazole is a triazole pesticide used to protect vegetables and fruits against diverse fungi pathologies. However, its utilization may be... 相似文献
677.
Vasil’ev A. G. Bol’shakov V. N. Vail’eva I. A. Sineva N. V. 《Russian Journal of Ecology》2022,53(3):228-232
Russian Journal of Ecology - 相似文献
678.
Novoselov A. P. Imant E. N. Artem’ev S. N. Matveev N. Yu. Matveeva A. D. 《Russian Journal of Ecology》2022,53(3):212-220
Russian Journal of Ecology - The Northern Dvina River, one of the largest watercourses in the European northeast of Russia, is exposed to a multifactorial anthropogenic impact, which leads to... 相似文献
679.
Rogora Michela Steingruber Sandra Marchetto Aldo Mosello Rosario Giacomotti Paola Orru’ Arianna Tartari Gabriele A. Tiberti Rocco 《Environmental science and pollution research international》2022,29(41):62312-62329
Environmental Science and Pollution Research - The effects of the COVID-19 lockdown on deposition and surface water chemistry were investigated in an area south of the Alps. Long-term data provided... 相似文献
680.
Alamroshan Fatemeh La’li Mahyar Yahyaei Mohsen 《Environmental science and pollution research international》2022,29(5):6793-6811
Environmental Science and Pollution Research - The supplier selection problem (SSP) is known as one of the major issues in the supply chain management area. In this field, the literature shows that... 相似文献