全文获取类型
收费全文 | 701篇 |
免费 | 53篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 16篇 |
儿科学 | 26篇 |
妇产科学 | 7篇 |
基础医学 | 70篇 |
口腔科学 | 6篇 |
临床医学 | 64篇 |
内科学 | 167篇 |
皮肤病学 | 21篇 |
神经病学 | 25篇 |
特种医学 | 32篇 |
外科学 | 68篇 |
综合类 | 20篇 |
预防医学 | 14篇 |
眼科学 | 57篇 |
药学 | 81篇 |
中国医学 | 3篇 |
肿瘤学 | 79篇 |
出版年
2023年 | 5篇 |
2022年 | 13篇 |
2021年 | 16篇 |
2020年 | 14篇 |
2019年 | 11篇 |
2018年 | 12篇 |
2017年 | 13篇 |
2016年 | 16篇 |
2015年 | 27篇 |
2014年 | 24篇 |
2013年 | 32篇 |
2012年 | 45篇 |
2011年 | 59篇 |
2010年 | 38篇 |
2009年 | 23篇 |
2008年 | 38篇 |
2007年 | 51篇 |
2006年 | 42篇 |
2005年 | 23篇 |
2004年 | 27篇 |
2003年 | 26篇 |
2002年 | 17篇 |
2001年 | 15篇 |
2000年 | 18篇 |
1999年 | 22篇 |
1998年 | 6篇 |
1997年 | 8篇 |
1996年 | 6篇 |
1995年 | 4篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 6篇 |
1991年 | 7篇 |
1990年 | 8篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 6篇 |
1983年 | 2篇 |
1979年 | 3篇 |
1978年 | 6篇 |
1977年 | 2篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1971年 | 8篇 |
1970年 | 8篇 |
1969年 | 5篇 |
1968年 | 2篇 |
1967年 | 3篇 |
1966年 | 6篇 |
排序方式: 共有756条查询结果,搜索用时 15 毫秒
31.
32.
Vijay Kumar Bhagat R. Garg Manik C. Baruah Srinivas S. Vasireddi 《The Journal of dermatology》1993,20(3):175-177
In adults, lichen planus (LP) is relatively more common than in children. Among 222 cases of LP, there were 25 (11.2%) children in our study. The majority of the cases were females in the age group of 8–14; the youngest child was 3 years old. Papular and linear types of LP were common in children. There was no familial history of LP in any of the cases. The patients with classic LP lesions responded well to dapsone therapy. This study supports the suggestion of Ramsay and Hurley that childhood LP is more common in the tropics. 相似文献
33.
Chronic administration of nicotine in mice for six weeks did not affect the duration of hypnosis induced by pentobarbital, hexobarbital, barbital or zoxazolamine. The onset of barbital hypnosis remained unaffected. These results suggest that chronic administration of nicotine did not affect the drug metabolizing activity of hepatic microsomes. While psychotropic drugs significantly potentiated the hypnosis due to pentobarbital and hexobarbital, the degree of potentiation was the same in both chronically nicotine pretreated mice and controls. Nicotine pre-treatment significantly increased the duration of sleeping time caused by ethanol alone. However, when treatment of nicotine continued for a longer period of time, the duration of hypnosis induced by ethanol returned to control level. 相似文献
34.
35.
36.
B. Bhagat 《Psychopharmacology》1970,18(4):325-332
Chronic administration of nicotine (0.5 mg/kg, subcutaneously, 3 to 5 times a day for 6 weeks) accelerated the rate of disappearance of intraventricularly administered 3H-noradrenaline from rat brain. This was associated with normal levels of 3H-normetanephrine suggesting an increase in intraneuronal deamination.The rate constant of amine decline (k) in animals chronically treated with nicotine was significantly greater than that of controls, while the steady state level of brain noradrenaline was about equal in both groups of rats. Amphetamine, reserpine, acetylcholine, histamine, pheniprazine, pargyline, and nicotine affected the catecholamine levels in the rat brain treated with nicotine to the same degree as they did in the controls. It is concluded that chronic administration of nicotine may increase noradrenaline turnover in the brain and possibly increase the deamination of this amine. 相似文献
37.
38.
B Bhagat 《The Central African journal of medicine》1969,15(8):197-198
39.
Pujari SN Patel AK Naik E Patel KK Dravid A Patel JK Mane AA Bhagat S 《Journal of acquired immune deficiency syndromes (1999)》2004,37(5):1566-1569
OBJECTIVE: To assess clinical and immunologic effectiveness and acute toxicity to nevirapine (NVP)-based fixed-dose combinations (FDCs) in antiretroviral-naive HIV-1-infected patients in India. DESIGN: Observational study of patients initiated on NVP-based combination therapy delivered as FDCs. METHODS: Antiretroviral-naive HIV-1-infected patients initiated on FDCs (zidovudine/lamivudine [3TC]/NVP or stavudine/3TC/NVP) were assessed clinically and with CD4 counts periodically. Adverse events to NVP were assessed clinically and by laboratory markers. Frequency and risk factors for development of adverse events and clinical outcomes were determined. RESULTS: Of the 1291 patients started on therapy, 1253 completed a minimum of 3 months of follow-up. Rash and hepatitis were documented in 6.6% (95% confidence interval [CI]: 5.5-8.3) and 3.2% (95% CI: 2.3-4.8) of patients initiating therapy, respectively. There was significant improvement in CD4 counts over 2 years. Fourty-eight patients died, and 186 clinical events were documented in these patients. Tuberculosis was the most common cause of morbidity and mortality. Self-reported adherence was high. CONCLUSION: Fixed-dose formulations of NVP-based combination therapy are safe and produced durable clinical and immunologic benefit. 相似文献
40.
A 70-year-old woman presented with pancytopenia associated with plasma cell infiltration of her bone marrow. The plasma cells were often multinucleated and demonstrated phagocytosis of erythroid and granulocytic cells. Atypical immunophenotypic features included the expression of CD117 and CD13 and the lack of expression of CD56. Although kappa chains were demonstrable in the cytoplasm, no paraprotein was found in the serum or urine. Osteolytic lesions were absent. The pancytopenia of this unusual patient with non-secretory, hemophagocytic myeloma has improved on dexamethasone monotherapy, although her hemophagocytosis persists. 相似文献