全文获取类型
收费全文 | 4915篇 |
免费 | 355篇 |
国内免费 | 19篇 |
专业分类
耳鼻咽喉 | 57篇 |
儿科学 | 129篇 |
妇产科学 | 99篇 |
基础医学 | 637篇 |
口腔科学 | 133篇 |
临床医学 | 408篇 |
内科学 | 1152篇 |
皮肤病学 | 256篇 |
神经病学 | 357篇 |
特种医学 | 216篇 |
外科学 | 508篇 |
综合类 | 17篇 |
一般理论 | 3篇 |
预防医学 | 236篇 |
眼科学 | 87篇 |
药学 | 521篇 |
中国医学 | 9篇 |
肿瘤学 | 464篇 |
出版年
2023年 | 44篇 |
2022年 | 62篇 |
2021年 | 130篇 |
2020年 | 67篇 |
2019年 | 114篇 |
2018年 | 100篇 |
2017年 | 111篇 |
2016年 | 128篇 |
2015年 | 121篇 |
2014年 | 168篇 |
2013年 | 196篇 |
2012年 | 290篇 |
2011年 | 307篇 |
2010年 | 161篇 |
2009年 | 167篇 |
2008年 | 258篇 |
2007年 | 274篇 |
2006年 | 290篇 |
2005年 | 266篇 |
2004年 | 261篇 |
2003年 | 256篇 |
2002年 | 200篇 |
2001年 | 112篇 |
2000年 | 102篇 |
1999年 | 114篇 |
1998年 | 55篇 |
1997年 | 43篇 |
1996年 | 44篇 |
1995年 | 38篇 |
1994年 | 27篇 |
1993年 | 25篇 |
1992年 | 62篇 |
1991年 | 70篇 |
1990年 | 65篇 |
1989年 | 50篇 |
1988年 | 80篇 |
1987年 | 77篇 |
1986年 | 67篇 |
1985年 | 43篇 |
1984年 | 37篇 |
1983年 | 19篇 |
1982年 | 11篇 |
1981年 | 12篇 |
1979年 | 17篇 |
1978年 | 18篇 |
1976年 | 11篇 |
1973年 | 9篇 |
1969年 | 13篇 |
1968年 | 15篇 |
1967年 | 11篇 |
排序方式: 共有5289条查询结果,搜索用时 31 毫秒
991.
992.
Heydendael VM de Borgie CA Spuls PI Bossuyt PM Bos JD de Rie MA 《The journal of investigative dermatology. Symposium proceedings / the Society for Investigative Dermatology, Inc. [and] European Society for Dermatological Research》2004,9(2):131-135
Psoriasis is a chronic scaling and inflammatory skin disease that can affect patients' quality of life and daily functioning. We studied the scores of 85 patients suffering from moderate to severe plaque-type psoriasis, participating in a randomized controlled trial. We compared their scores on a generic quality-of-life instrument with data from two reference populations. We examined associations between clinical severity, as measured by the components of the Psoriasis Area and Severity Index (PASI), and the respective quality-of-life subdimensions, measured by the Medical Outcome Survey Short Form 36 (SF-36), to find out what elements of disease activity are related with impaired quality of life. Compared to the reference population, quality of life was impaired in terms of bodily pain and social functioning. There were no significant correlations between overall disease severity, as measured by PASI, and the SF-36 subdimensions. When examining the PASI components, we found significant correlations between desquamation on the upper limbs and mental health and bodily pain (r = -0.23 and r = -0.28, respectively) and between desquamation on the scalp and mental health (r = -0.29). In conclusion, we found that psoriasis patients had a lower quality of life than a reference population, without a significant relation between disease severity or disease area and quality of life. Yet psoriasis lesions located on visible body parts are significantly correlated with aspects of quality of life. 相似文献
993.
994.
995.
C Nakatani A Matsuoka T Muramatsu S Miyagawa K Sakamoto T Shirai 《Nippon Hifuka Gakkai zasshi. The Japanese journal of dermatology》1991,101(8):831-835
From 1975 to 1989, 12 patients with pemphigus vulgaris (PV) and 19 with pemphigus foliaceus (PF) were treated with systemic or topical corticosteroids at the Nara University Hospital. All 12 patients with PV were treated with oral corticosteroids (initial dose of prednisolone: 15-70 mg/day) and 4 of 12 patients showed prolonged clinical remission (up to 9 years) without corticosteroids. Of 19 patients with PF, 16 patients were treated with oral corticosteroids (initial dose of prednisolone: 8-40 mg/day) and 3 patients were treated with only topical application of corticosteroids. In PF, 7 of 16 patients treated with systemic corticosteroids and all 3 patients treated with topical corticosteroids also showed prolonged clinical remission (up to 10 years). These observations suggest that most of the patients with pemphigus respond well to the treatment of relatively small or moderate dosage of corticosteroids. 相似文献
996.
Rhodes LE de Rie M Enström Y Groves R Morken T Goulden V Wong GA Grob JJ Varma S Wolf P 《Archives of dermatology》2004,140(1):17-23
BACKGROUND: Photodynamic therapy (PDT) is increasingly used as a noninvasive treatment for nodular basal cell carcinoma (BCC), without a sound evidence base. OBJECTIVE: To compare topical PDT, with the use of the sensitizer methyl aminolevulinate, and standard excision surgery in nodular BCC. DESIGN: Prospective, randomized study. SETTING: University dermatology departments. PATIENTS: A total of 101 adults with previously untreated nodular BCC. INTERVENTIONS: Patients received methyl aminolevulinate PDT (n = 52) or surgery (n = 49). The PDT was given twice, 7 days apart, with methyl aminolevulinate cream (160 mg/g) and 75 J/cm(2) red light (570-670 nm). Thirteen patients with a noncomplete response to PDT at 3 months (24% lesions) were retreated. OUTCOME MEASURES: Primary end point was clinically assessed lesion clearance at 3 months after treatment. Secondary end points were sustained response rate at 12 months and cosmetic outcome at 3 and 12 months. Cosmesis and lesion recurrence were further assessed at 24 months. RESULTS: Data from 97 patients (105 lesions) were included in the 3-month per-protocol analysis. Complete response rates did not differ significantly between groups (51/52 [98%] lesions with surgery vs 48/53 [91%] lesions with methyl aminolevulinate PDT; difference [95% confidence interval], 4.8% (-3.4% to 13.0%]; P =.25). At 12 months, tumor-free rates were 50 (96%) of 52 lesions with surgery vs 44 (83%) of 53 with methyl aminolevulinate PDT (P =.15). More patients treated with methyl aminolevulinate PDT than surgery had an excellent or good cosmetic outcome at all time points (significant at 12 and 24 months on patient assessment, P<.05, and at 3, 12, and 24 months on investigator evaluation, P<.001). At 24 months, 5 lesions that had initially cleared with methyl aminolevulinate PDT had recurred, compared with 1 after surgery. CONCLUSIONS: Methyl aminolevulinate PDT is an effective treatment for nodular BCC, and while there is a trend for higher recurrence with this modality, it conveys the advantage over surgery of better cosmesis. 相似文献
997.
Kawashima M Hayashi N Igarashi A Kitahara H Maeguchi M Mizuno A Murata Y Nogita T Toda K Tsuboi R Ueki R Yamada M Yamazaki M Matsuda T Natsumeda Y Takahashi K Harada S 《European journal of dermatology : EJD》2004,14(4):247-254
Finasteride is a type 2 5 alpha-reductase inhibitor that inhibits conversion of testosterone to dihydrotestosterone, a key mediator of male pattern hair loss (androgenetic alopecia). The objective of this study was to identify the optimal dosage of finasteride and to evaluate its efficacy and safety in the treatment of Japanese men with male pattern hair loss. In this double- blind randomized study, 414 Japanese men with male pattern hair loss received finasteride 1 mg (n = 139), finasteride 0.2 mg (n = 137), or placebo (n = 38) once daily for 48 weeks. Efficacy was evaluated by global photographic assessment, patient self-assessment, and investigator assessment. All efficacy endpoints showed significant improvement with finasteride therapy by 12 weeks (p < 0.05 versus placebo). At 48 weeks, 58%, 54%, and 6% of men in the finasteride 1 mg, finasteride 0.2 mg, and placebo groups, respectively, had improved based on assessments of global photographs. All efficacy endpoints were numerically superior for the 1 mg dose over the 0.2 mg dose at 48 weeks. Finasteride treatment was generally well tolerated. Finasteride 1 mg\day slows hair loss and improves hair growth in Japanese men with male pattern hair loss. 相似文献
998.
Thrombospondin-1 promotes fibroblast-mediated collagen gel contraction caused by activation of latent transforming growth factor beta-1 总被引:2,自引:0,他引:2
Sakai K Sumi Y Muramatsu H Hata K Muramatsu T Ueda M 《Journal of dermatological science》2003,31(2):99-109
BACKGROUND: Grafting of cultured epithelium has become a useful technique for the treatment of epithelial defects, since grafted epithelial cells secrete factors promoting wound healing. We identified one such factor produced by cultured oral epithelial cells as thrombospondin-1 (TSP-1). Recently, TSP-1 was reported to act as an activator of transforming growth factor-beta1 (TGF-beta1). OBJECTIVE: The role of TSP-1 in wound healing and its mechanism were investigated in vitro and in vivo. METHODS: The cultured oral epithelial cell-conditioned medium was harvested and applied to Heparin-Sepharose affinity chromatography. Proteins were analyzed by N-Terminal sequencer. TSP-1 and the other factors were applied to fibroblasts-mediated collagen gel contraction assay. The amount of TGF-beta1 (latent TGF-beta1 (LTGF) and active TGF-beta1) in collagen gels was quantified by ELISA and Western blotting analysis. Collagen sponges were soaked with TSP-1 and implanted subcutaneously into rats. RESULTS: A 38 kDa protein secreted from cultured oral epithelial cells was found to be human TSP-1. TSP-1 promoted collagen gel contraction activity, and anti-human TSP-1 and TGF-beta1 antibody inhibited the activity. The diameters of the gels treated with LTGF and TSP-1 were reduced to a greater extent than those of gels treated with either factor alone. Although there were no significant differences in the amounts of total TGF-beta1, which include LTGF, the amount of 25 kDa TGF-beta1 was 3.30-fold greater in TSP-1-treated samples than controls. In vivo, 7 days after implantation, increased numbers of fibroblasts were observed in the sponges treated with TSP-1. CONCLUSION: These findings suggested that TSP-1 causes collagen gel contraction by activation of LTGF. TSP-1 is expected to be especially suitable for regulating wound healing. 相似文献
999.
1000.
Nobuhiro Watanabe Yoshiyuki Takahashi Kimikazu Matsumoto Yasuo Horikoshi Asahito Hama Hideki Muramatsu Nao Yoshida Hiroshi Yagasaki Kazuko Kudo Keizo Horibe Koji Kato Seiji Kojima 《Pediatric transplantation》2011,15(6):642-649
Watanabe N, Takahashi Y, Matsumoto K, Horikoshi Y, Hama A, Muramatsu H, Yoshida N, Yagasaki H, Kudo K, Horibe K, Kato K, Kojima S. Total body irradiation and melphalan as a conditioning regimen for children with hematological malignancies undergoing transplantation with stem cells from HLA‐identical related donors.Pediatr Transplantation 2011: 15: 642–649. © 2011 John Wiley & Sons A/S. Abstract: Although some studies have reported that TBI and MEL offer an effective conditioning regimen for autologous SCT in acute leukemia, little has been reported regarding outcomes of allogeneic SCT. We retrospectively evaluated outcomes for 50 pediatric patients who underwent allo‐SCT conditioned with intravenous MEL (180–210 mg/m2) and fractionated TBI (12–13.2 Gy) from HLA‐identical related donors. Nineteen patients were in CR1, 18 were in CR2, and 13 showed advanced‐stage disease (≥CR3). Patients had received allo‐SCT from HLA‐identical siblings (n = 45) or phenotypically HLA‐identical family donors (n = 5). Median duration of follow‐up for all disease‐free patients was 61 months (range, 8.8–177 months). At the time of analysis, 12 patients had died. Eleven of those died of relapse, and one died of TRM. DFS rates for all patients, patients with AML (n = 12), and patients with lymphoid malignancy (n = 38) were 61.4% and 82.1%, respectively. DFS rates for CR1, CR2, and ≥CR3 cases were 89.2%, 88.1%, and 23.1%, respectively (p < 0.05). MEL/TBI for pediatric patients with hematological malignancies was associated with lower relapse rates and no increase in toxicity, resulting in better survival. 相似文献