全文获取类型
收费全文 | 748篇 |
免费 | 31篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 35篇 |
儿科学 | 66篇 |
妇产科学 | 61篇 |
基础医学 | 97篇 |
口腔科学 | 8篇 |
临床医学 | 55篇 |
内科学 | 162篇 |
皮肤病学 | 35篇 |
神经病学 | 35篇 |
特种医学 | 9篇 |
外科学 | 40篇 |
综合类 | 9篇 |
预防医学 | 49篇 |
眼科学 | 33篇 |
药学 | 42篇 |
中国医学 | 1篇 |
肿瘤学 | 43篇 |
出版年
2023年 | 4篇 |
2022年 | 7篇 |
2021年 | 22篇 |
2020年 | 11篇 |
2019年 | 19篇 |
2018年 | 15篇 |
2017年 | 14篇 |
2016年 | 19篇 |
2015年 | 20篇 |
2014年 | 28篇 |
2013年 | 43篇 |
2012年 | 64篇 |
2011年 | 62篇 |
2010年 | 34篇 |
2009年 | 26篇 |
2008年 | 48篇 |
2007年 | 63篇 |
2006年 | 56篇 |
2005年 | 45篇 |
2004年 | 40篇 |
2003年 | 44篇 |
2002年 | 38篇 |
2001年 | 7篇 |
2000年 | 1篇 |
1999年 | 6篇 |
1998年 | 8篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 2篇 |
1977年 | 1篇 |
1964年 | 2篇 |
1962年 | 1篇 |
1961年 | 1篇 |
1960年 | 1篇 |
排序方式: 共有780条查询结果,搜索用时 328 毫秒
1.
2.
Manish Gupta Neena Chaudhary A. K. Rai 《Indian journal of otolaryngology and head and neck surgery》2007,59(2):160-162
Teratomas are true neoplasms composed of tissues from all three germinal layers and may exhibit variable levels of maturity. They have an unknown origin and eccentric microscopic appearance. Teratomas arising from the oral cavity are rare in the newborn; only 22 cases have been reported in the literature. We describe a female neonate with an oral teratoma originating from the tongue that was successfully treated with surgery. 相似文献
3.
Ajit Sood Vandana Midha Neena Sood Manu Bansal 《Indian journal of gastroenterology》2006,25(6):283-285
BACKGROUND: The treatment of hepatitis C virus (HCV)-related cirrhosis is difficult due to high frequency of adverse effects. We retrospectively reviewed the case records of patients with HCV cirrhosis to evaluate the efficacy and tolerability of pegylated (peg) interferon and ribavirin treatment in these patients. METHODS: Medical records of 28 patients with HCV-related compensated cirrhosis were reviewed. The treatment protocol was a combination therapy of peg interferon alfa-2b (1 microg/Kg/week) plus oral ribavirin (10-12 mg/Kg/day). Primary endpoint was sustained virological response, with additional endpoints of drug tolerance, clinical or biochemical worsening and death. RESULTS: End-of-treatment virlogic response was seen in 24 of 28 patients (85%) and sustained virologic response in 15 of 28 (53%) patients. Biochemical end-of-treatment response and sustained response were seen in 20 and 16 patients (71% and 57%), respectively. Treatment had to be stopped in 3 patients due to decompensation of liver status in two and drug intolerance in one, while dose modification was required in two patients. CONCLUSIONS: Combination therapy with peg interferon plus ribavirin seems effective in patients with liver cirrhosis. High relapse rate, poor biochemical recovery and possibility of decompensation are issues that need to be kept in mind. 相似文献
4.
5.
6.
7.
Asiye İzem Sandal Hatice Şenlikci Merve Yılmazer Burcu Kartal Bedia Palabıyık Özen Banu Özdaş 《Andrologia》2021,53(5):e14032
The aim of the study was to investigate the efficiency of ram seminal plasma and fetal calf serum on freezing of buck semen. Twenty ejaculates were collected using an electro-ejaculator and split into six groups. While FCS additive was not used in A1, A2 and A3 groups, 10% FCS was added to B1, B2 and B3 groups. These groups were then edited according to whether the buck or ram SP was involved. The design of the groups was done as follows: Group A1 (control 1), group A2 without buck SP, group A3 containing ram SP instead of buck SP. Groups B1 (control 2), B2 and B3 were the FCS added forms of these groups. Progressive sperm motility percentages in Group A1 and Group B2 were found to be higher when compared to the lowest Group B3. There were no significant differences between the groups in neither the levels of reactive oxygen species nor the enzyme and glutathione activities. In conclusion, the lack of statistical difference between the groups suggested that despite the supplements used but only when the buck spermatozoa structure was healthy, the cell could preserve acrosome, DNA and the integrity of membrane. 相似文献
8.
Priya Mishra Ivneet Banga Roshika Tyagi Tanya Munjal Aditya Goel Neena Capalash Prince Sharma C. R. Suri Sonu Gandhi 《RSC advances》2018,8(41):23163
Heroin use and addiction pose serious risks and side effects due to overdose. Quantification of heroin in biological samples is challenging due to rapid deacetylation of heroin to its active metabolites. In this study, we report the quantification of metabolic degradation of heroin by-products in biological urine samples. The presence of the drug was monitored after oral administration of heroin at different time intervals. Various biophysical techniques, such as high performance liquid chromatography (HPLC) and mass spectrometry (MS) were used to evaluate the presence of the drug. A competitive fluorescence based immunoassay was developed with a limit of detection (LOD) up to 0.01 ng mL−1 and the IC50 value was 0.1 ng mL−1, while the dipstick assay shows a LOD up to 5 ng mL−1. Rapid detection of narcotic drugs was carried out for biological urine samples collected at various time points. Validation of the developed dipstick was carried out for the standard as well as the spiked urine samples by fluorescence based immunoassay (FIA), using anti-morphine antibodies. A strong correlation (R = 0.94) was obtained between the developed dipstick and FIA assay for biological urine samples collected at various time points. The developed immunochromatographic dipstick is highly sensitive, field applicable and cost effective, and can serve as a first choice for the monitoring of narcotic drugs in blood, urine and saliva in drug addicts and athletes.Pathway of heroin degradation post oral administration in mice. 相似文献
9.
Neena Verma Dharmendra Singh Krishna Pandey Vidya Nand Rabi Das Chandra Shekhar Lal Rakesh Bihari Verma Prabhat Kumar Sinha Pradeep Das 《Journal of clinical microbiology》2013,51(12):4217-4219
Diagnosis of post-kala-azar dermal leishmaniasis (PKDL), particularly the macular form, is difficult when based on microscopy. This study compared the results of nested PCR (91.9% positive samples) with imprint smear microscopy (70.9% positive samples) for 62 PKDL samples. We found that nested PCR, which indicated 87.5% positivity for the macular lesions, compared to 41.6% positivity by imprint smear microscopy, is an efficient method for early diagnosis of PKDL. 相似文献
10.