全文获取类型
收费全文 | 72419篇 |
免费 | 18189篇 |
国内免费 | 22篇 |
出版年
2023年 | 254篇 |
2022年 | 727篇 |
2021年 | 1567篇 |
2020年 | 2758篇 |
2019年 | 4429篇 |
2018年 | 4821篇 |
2017年 | 4890篇 |
2016年 | 5604篇 |
2015年 | 6369篇 |
2014年 | 6190篇 |
2013年 | 7441篇 |
2012年 | 5835篇 |
2011年 | 5320篇 |
2010年 | 5309篇 |
2009年 | 3826篇 |
2008年 | 3600篇 |
2007年 | 3062篇 |
2006年 | 2757篇 |
2005年 | 2488篇 |
2004年 | 2375篇 |
2003年 | 2248篇 |
2002年 | 2088篇 |
2001年 | 646篇 |
2000年 | 460篇 |
1999年 | 495篇 |
1998年 | 481篇 |
1997年 | 323篇 |
1996年 | 307篇 |
1995年 | 296篇 |
1994年 | 279篇 |
1993年 | 272篇 |
1992年 | 193篇 |
1991年 | 189篇 |
1990年 | 185篇 |
1989年 | 167篇 |
1988年 | 139篇 |
1987年 | 121篇 |
1986年 | 93篇 |
1985年 | 130篇 |
1984年 | 139篇 |
1983年 | 113篇 |
1982年 | 118篇 |
1981年 | 126篇 |
1980年 | 108篇 |
1979年 | 101篇 |
1978年 | 71篇 |
1977年 | 82篇 |
1976年 | 65篇 |
1975年 | 57篇 |
1973年 | 62篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Luis E. Escobar Sandra Pritzkow Steven N. Winter Daniel A. Grear Megan S. Kirchgessner Ernesto Dominguez‐Villegas Gustavo Machado A. Townsend Peterson Claudio Soto 《Biological reviews of the Cambridge Philosophical Society》2020,95(2):393-408
Prions are misfolded infectious proteins responsible for a group of fatal neurodegenerative diseases termed transmissible spongiform encephalopathy or prion diseases. Chronic Wasting Disease (CWD) is the prion disease with the highest spillover potential, affecting at least seven Cervidae (deer) species. The zoonotic potential of CWD is inconclusive and cannot be ruled out. A risk of infection for other domestic and wildlife species is also plausible. Here, we review the current status of the knowledge with respect to CWD ecology in wildlife. Our current understanding of the geographic distribution of CWD lacks spatial and temporal detail, does not consider the biogeography of infectious diseases, and is largely biased by sampling based on hunters' cooperation and funding available for each region. Limitations of the methods used for data collection suggest that the extent and prevalence of CWD in wildlife is underestimated. If the zoonotic potential of CWD is confirmed in the short term, as suggested by recent results obtained in experimental animal models, there will be limited accurate epidemiological data to inform public health. Research gaps in CWD prion ecology include the need to identify specific biological characteristics of potential CWD reservoir species that better explain susceptibility to spillover, landscape and climate configurations that are suitable for CWD transmission, and the magnitude of sampling bias in our current understanding of CWD distribution and risk. Addressing these research gaps will help anticipate novel areas and species where CWD spillover is expected, which will inform control strategies. From an ecological perspective, control strategies could include assessing restoration of natural predators of CWD reservoirs, ultrasensitive CWD detection in biotic and abiotic reservoirs, and deer density and landscape modification to reduce CWD spread and prevalence. 相似文献
992.
Amy E. Zanne Kessy Abarenkov Michelle E. Afkhami Carlos A. Aguilar‐Trigueros Scott Bates Jennifer M. Bhatnagar Posy E. Busby Natalie Christian William K. Cornwell Thomas W. Crowther Habacuc Flores‐Moreno Dimitrios Floudas Romina Gazis David Hibbett Peter Kennedy Daniel L. Lindner Daniel S. Maynard Amy M. Milo Rolf Henrik Nilsson Jeff Powell Mark Schildhauer Jonathan Schilling Kathleen K. Treseder 《Biological reviews of the Cambridge Philosophical Society》2020,95(2):409-433
Fungi play many essential roles in ecosystems. They facilitate plant access to nutrients and water, serve as decay agents that cycle carbon and nutrients through the soil, water and atmosphere, and are major regulators of macro‐organismal populations. Although technological advances are improving the detection and identification of fungi, there still exist key gaps in our ecological knowledge of this kingdom, especially related to function . Trait‐based approaches have been instrumental in strengthening our understanding of plant functional ecology and, as such, provide excellent models for deepening our understanding of fungal functional ecology in ways that complement insights gained from traditional and ‐omics‐based techniques. In this review, we synthesize current knowledge of fungal functional ecology, taxonomy and systematics and introduce a novel database of fungal functional traits (FunFun). FunFun is built to interface with other databases to explore and predict how fungal functional diversity varies by taxonomy, guild, and other evolutionary or ecological grouping variables. To highlight how a quantitative trait‐based approach can provide new insights, we describe multiple targeted examples and end by suggesting next steps in the rapidly growing field of fungal functional ecology. 相似文献
993.
Emmanuel Margolin Youngjun J. Oh Matthew Verbeek Jason Naude Daniel Ponndorf Yulia Alexandrovna Meshcheriakova Hadrien Peyret Michiel T. van Diepen Ros Chapman Ann E. Meyers George Peter Lomonossoff Nobuyuki Matoba Anna‐Lise Williamson Edward P. Rybicki 《Plant biotechnology journal》2020,18(10):2109-2117
994.
995.
Shai Meiri Luciano Avila Aaron M. Bauer David G. Chapple Indraneil Das Tiffany M. Doan Paul Doughty Ryan Ellis Lee Grismer Fred Kraus Mariana Morando Paul Oliver Daniel Pincheira‐Donoso Marco Antonio Ribeiro‐Junior Glenn Shea Omar Torres‐Carvajal Alex Slavenko Uri Roll 《Global Ecology and Biogeography》2020,29(9):1515-1530
996.
997.
998.
999.
1000.