全文获取类型
收费全文 | 12229篇 |
免费 | 25篇 |
专业分类
教育 | 9492篇 |
科学研究 | 1230篇 |
各国文化 | 7篇 |
体育 | 364篇 |
文化理论 | 389篇 |
信息传播 | 772篇 |
出版年
2023年 | 4篇 |
2022年 | 8篇 |
2021年 | 15篇 |
2020年 | 22篇 |
2019年 | 29篇 |
2018年 | 2216篇 |
2017年 | 2120篇 |
2016年 | 1596篇 |
2015年 | 132篇 |
2014年 | 128篇 |
2013年 | 264篇 |
2012年 | 233篇 |
2011年 | 715篇 |
2010年 | 848篇 |
2009年 | 455篇 |
2008年 | 661篇 |
2007年 | 1168篇 |
2006年 | 82篇 |
2005年 | 412篇 |
2004年 | 464篇 |
2003年 | 367篇 |
2002年 | 136篇 |
2001年 | 18篇 |
2000年 | 25篇 |
1999年 | 6篇 |
1998年 | 5篇 |
1997年 | 27篇 |
1996年 | 9篇 |
1995年 | 9篇 |
1994年 | 8篇 |
1993年 | 6篇 |
1992年 | 6篇 |
1991年 | 8篇 |
1990年 | 5篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 5篇 |
1981年 | 2篇 |
1979年 | 4篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1973年 | 2篇 |
1971年 | 2篇 |
1968年 | 1篇 |
1967年 | 2篇 |
1926年 | 1篇 |
1925年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
The results from use of behaviour therapy with child abuse cases is very encouraging. Data has been presented to show the approach both economical and rewarding. Our experience suggests that selected social workers may be able to learn to use the approach with a relatively short period of training. 相似文献
992.
993.
994.
995.
996.
Rats confronted with the onset of a light gradient display a transient increase in locomotion called theactivity response (AR) and a dark preference (Godsil & Fanselow, 2004). These experiments demonstrate that the magnitude of the AR can be blunted
with Pavlovian fear-conditioning procedures via associative and nonassociative fear. Although manifested in decreased locomotion,
the blunted AR effect was not due to increased freezing or immobility behaviors. Instead, rats displayed reduced rearing and
an increase in a class of behaviors calledstationary activity. These results suggest that the lighting differential supplied by the cue influences the topography of defensive behavior
and reduces the expression of freezing. This procedure provides a means by which to examine learned and unlearned defensive
responses to the same stimulus. 相似文献
997.
Saimbert MK 《Medical reference services quarterly》2005,24(2):41-58
Both nursing and library science literature discuss the information needs and information-seeking behavior of nurses. Some research has focused on information needs of nursing students, but little research is available regarding information-seeking behavior of nursing students, specifically baccalaureate nursing students. Only a few key references were identified addressing nursing students' information seeking with regard to nurse care planning. At the University of Medicine and Dentistry of New Jersey, George F. Smith Library, a wide range of nursing students from those in traditional BSN programs, to students in accelerated BSN programs, to masters' nursing students of all types visit the reference desk asking direct and indirect questions involving the nursing care plan. This article highlights repeated categories of information sought by nursing students at the University of Medicine and Dentistry of New Jersey, George F. Smith Library via both formal and informal reference interviews. Information sought most frequently was categorized and formed the basis for a new library workshop entitled "Information Resources for the Nursing Care Plan." 相似文献
998.
Kavita Shalia Sudha Savant Vijaya A. Haldankar Tulip Nandu Poonam Pawar Siddhi Divekar V. K. Shah Purvi Bhatt 《Indian journal of clinical biochemistry : IJCB》2012,27(1):74-82
To analyse the association of high sensitivity C-reactive (hsCRP) protein levels and −717A/G single nucleotide polymorphism
of CRP with acute myocardial infarction (AMI) in the Indian population. Study population included 100 MI cases wherein 32
patients had experienced previous MI (MI-Group-1), 68 MI cases were recruited at presentation (MI-Group-2) and equal number
of age and gender matched healthy individuals. hsCRP levels were determined by ELISA and genotyping of −717A/G was carried
out by polymerase chain reaction-based restriction digestion method. The −717A/G genotypes did not influence hsCRP level and
their distribution did not differ between groups. However, in the present study hsCRP demonstrated significant correlation
with BMI in controls of both the genders and with triglycerides in females of AMI at presentation who otherwise are with low
risk profile. Identifying traditional risk factors associated with inflammation may help in controlling the acute event. 相似文献
999.
Meera S. Ghadge Purva P. Naik Bijaynath P. Tiwari Ruprekha M. Hegde Tanaji J. Matale 《Indian journal of clinical biochemistry : IJCB》2012,27(1):97-99
Breast cancer is one of the most frequent malignancies in the world. Available staging procedures to detect breast cancer
are bone scan, chest X-ray, liver ultrasonography, computerized tomography, estimation of tumor markers like carbohydrate
antigen (CA15-3) and carcino embryonic antigen. These procedures are expensive and may not be required in all cases. Out of
70 patients studied, 55 had normal CA15-3 and 15 had elevated levels of Ca15-3. Eight (14.5%) of the 55 patients with normal
CA15-3 had abnormal bone scan. Fifteen patients had CA15-3 levels above the normal range and among these 9 (60%) had abnormal
bone scan. While prime facie it would appear that a high level of CA15-3 correlate with abnormal bone scan, it is also true
that the numbers are small at present and conclusions about the validity of CA15-3 as marker of bone metastasis may be premature. 相似文献
1000.
Yong Huo 《Journal of Zhejiang University. Science. B》2010,11(8):631-633
##正##Dr.Gruntzig et al.(1979) successfully completed the world's first percutaneous coronary intervention (PCI),a percutaneous transluminal coronary 相似文献