全文获取类型
收费全文 | 2020篇 |
免费 | 106篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 21篇 |
儿科学 | 33篇 |
妇产科学 | 41篇 |
基础医学 | 154篇 |
口腔科学 | 89篇 |
临床医学 | 132篇 |
内科学 | 379篇 |
皮肤病学 | 67篇 |
神经病学 | 86篇 |
特种医学 | 107篇 |
外科学 | 436篇 |
综合类 | 34篇 |
一般理论 | 4篇 |
预防医学 | 243篇 |
眼科学 | 49篇 |
药学 | 143篇 |
中国医学 | 7篇 |
肿瘤学 | 123篇 |
出版年
2024年 | 4篇 |
2023年 | 22篇 |
2022年 | 48篇 |
2021年 | 83篇 |
2020年 | 63篇 |
2019年 | 69篇 |
2018年 | 91篇 |
2017年 | 53篇 |
2016年 | 70篇 |
2015年 | 84篇 |
2014年 | 86篇 |
2013年 | 132篇 |
2012年 | 165篇 |
2011年 | 170篇 |
2010年 | 114篇 |
2009年 | 67篇 |
2008年 | 136篇 |
2007年 | 123篇 |
2006年 | 132篇 |
2005年 | 109篇 |
2004年 | 96篇 |
2003年 | 68篇 |
2002年 | 55篇 |
2001年 | 13篇 |
2000年 | 12篇 |
1999年 | 19篇 |
1998年 | 21篇 |
1997年 | 7篇 |
1996年 | 4篇 |
1995年 | 5篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1960年 | 1篇 |
排序方式: 共有2148条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Abstract – Traumatic dental injuries often occur to the teeth and their supporting tissues and they are the main reasons for emergency visit to a dental clinic. Management of a fracture depends on its position and the extent of root involvement. Horizontal root fractures are not seen frequently and the treatment consists of reduction and long‐term rigid fixation of the coronal segment. The present case demonstrates the successful management of two horizontally fractured maxillary central incisors with a follow‐up period of 9 months. 相似文献
5.
Kamran Ahmed Ashok Kelshiker Christopher Jenner 《Primary care respiratory journal》2007,16(4):249-251
AIMS AND OBJECTIVES: To screen for, and to treat, depression in COPD patients in a general practice surgery, and to test the feasibility of the screening method. METHODS: We sent The Beck Depression Inventory (BDI) Short-Form Questionnaire to all patients on the COPD register (n=69) by post, excluding those already diagnosed with depression (n=3). We sent appointments to all responders with moderate to severe depression and offered them treatment including antidepressants and pulmonary rehabilitation if the diagnosis was confirmed. RESULTS: Of the 66 patients to whom we sent questionnaires, 43 were returned completed and 13 of these had significant depression (30%). 10 of these patients were contactable and attended for review. The diagnosis of depression was confirmed in all 10 cases. Treatment options were discussed; five chose antidepressant medication, three chose pulmonary rehabilitation and two declined treatment. CONCLUSION: We identified and treated a significant number of depressed COPD patients in a general practice setting using this screening method. This method could have wider applications for screening, although further trials are needed. 相似文献
6.
Kamran Sardari Ehsan Galedar Kakhki Mehrdad Mohri 《Comparative clinical pathology》2007,16(3):197-200
Ten bulls (age 7 months, weight 302 ± 15 kg) were used in this study. After sterile preparation of skin, a full thickness
wound (20 × 20 mm) was created in each bull. The bulls were randomly assigned into two groups: group 1 received 6 ml Theranekron
subcutaneously and group 2 penicillin banzatine 10,000 IU/kg IM. These doses were repeated 6 days after initial wounding.
At days 0, 3, 6, 10 and 14, digital photographs were taken from the wounds to calculate wound contraction and epithelialization
using geometry. Chi-square test was performed for statistical analysis using SPSS 9 for Windows. There was no significant
differences in wound contraction between trial groups (P > 0.05) but a statistical difference was seen in epithelialization between groups (P < 0.05). Epithelialization is one of the most important factors in wound healing. According to the results of the present
study, Theranekron can significantly stimulate epithelialization in full thickness wounds in cows during the first 14 days
of healing. 相似文献
7.
8.
Kamran Sardari 《Comparative clinical pathology》2007,16(2):97-102
Local injection of a mixture of beta-aminopropionitril fumarate (BAPN-f) and sodium hyaluronate (NaH+) together with controlled exercise were evaluated for treatment of superficial digital flexor tendon (SDFT) injuries in horses.
Fourteen mixed breed horses with subacute SDF tendon injuries in forelimbs were randomly assigned to two groups. One group
received BAPN-f (0.7 mg/ml) and the other received NaH+ (10 mg/ml) all by intratendinous injection. Controlled exercise started during the first week after intratendinous treatment
and continued for 12 weeks. Cross-sectional area (CSA) of the SDFT, diameter of the SDFT, and relative area of the lesion
(presence of CSA) were measured by ultrasonographic examination. Lesions were semiquantitatively graded for echogenicity on
a scale of 0 to 4. The lesion severity in CSA was significantly reduced by BAPN and NaH compared to those horses treated by
BAPN only (p < 0.05). Lesion echogenicity score was significantly higher in horses treated with BAPN and NaH+ at day 0 compared to horses treated with BAPN (p < 0.05). At the end of the study, lesion echogenicity score was significantly reduced in the horses treated with BAPN and
NaH+ compared to horses treated by BAPN only (p < 0.05). According to the results of the present study, a combination of BAPN-f and NaH+ has a greater beneficial effect on tendon healing and remodeling in horses, as assessed by sonographic examination, compared
to treatment with single drugs. 相似文献
9.
Breast cancer risk associated with ovulation-stimulating drugs 总被引:4,自引:0,他引:4
Brinton LA Scoccia B Moghissi KS Westhoff CL Althuis MD Mabie JE Lamb EJ 《Human reproduction (Oxford, England)》2004,19(9):2005-2013
BACKGROUND: Despite the recognized role of hormones in the aetiology of breast cancer, there has been little evaluation of hormonal preparations used to treat infertility. METHODS: A retrospective cohort study of 12,193 women evaluated for infertility between 1965 and 1988 at five clinical sites identified 292 in situ and invasive breast cancers in follow-up through 1999. Standardized incidence ratios (SIRs) compared breast cancer risks with those of the general population. Analyses within the cohort estimated rate ratios (RRs) associated with medications after adjustment for other breast cancer predictors. RESULTS: Infertile patients had a significantly higher breast cancer risk than the general population [SIR = 1.29, 95% confidence interval (CI) 1.1-1.4]. Analyses within the cohort showed adjusted RRs of 1.02 for clomiphene citrate and 1.07 for gonadotrophins, and no substantial relationships to dosage or cycles of use. Slight and non-significant elevations in risk were seen for both drugs after > or = 20 years of follow-up (RRs = 1.39 for clomiphene and 1.54 for gonadotrophins). However, the risk associated with clomiphene for invasive breast cancers was statistically significant (RR = 1.60, 95% CI 1.0-2.5). CONCLUSIONS: Although there was no overall increase in breast cancer risk associated with use of ovulation-stimulating drugs, long-term effects should continue to be monitored. 相似文献
10.