全文获取类型
收费全文 | 338243篇 |
免费 | 22485篇 |
国内免费 | 7507篇 |
专业分类
耳鼻咽喉 | 4067篇 |
儿科学 | 9524篇 |
妇产科学 | 6542篇 |
基础医学 | 27438篇 |
口腔科学 | 7928篇 |
临床医学 | 37068篇 |
内科学 | 42508篇 |
皮肤病学 | 4557篇 |
神经病学 | 19266篇 |
特种医学 | 7832篇 |
外国民族医学 | 31篇 |
外科学 | 36344篇 |
综合类 | 50471篇 |
现状与发展 | 12篇 |
一般理论 | 29篇 |
预防医学 | 34838篇 |
眼科学 | 5269篇 |
药学 | 30044篇 |
372篇 | |
中国医学 | 30634篇 |
肿瘤学 | 13461篇 |
出版年
2023年 | 5431篇 |
2022年 | 9671篇 |
2021年 | 13178篇 |
2020年 | 12305篇 |
2019年 | 18044篇 |
2018年 | 15765篇 |
2017年 | 12665篇 |
2016年 | 10192篇 |
2015年 | 9509篇 |
2014年 | 19581篇 |
2013年 | 21110篇 |
2012年 | 18000篇 |
2011年 | 19492篇 |
2010年 | 15655篇 |
2009年 | 14384篇 |
2008年 | 14008篇 |
2007年 | 14486篇 |
2006年 | 12625篇 |
2005年 | 10975篇 |
2004年 | 8933篇 |
2003年 | 7861篇 |
2002年 | 6165篇 |
2001年 | 5536篇 |
2000年 | 4575篇 |
1999年 | 3976篇 |
1998年 | 3225篇 |
1997年 | 3082篇 |
1996年 | 2673篇 |
1995年 | 2569篇 |
1994年 | 2477篇 |
1993年 | 1975篇 |
1992年 | 2005篇 |
1991年 | 1729篇 |
1990年 | 1539篇 |
1989年 | 1370篇 |
1988年 | 1301篇 |
1987年 | 1122篇 |
1985年 | 3786篇 |
1984年 | 4796篇 |
1983年 | 3340篇 |
1982年 | 3800篇 |
1981年 | 3546篇 |
1980年 | 3161篇 |
1979年 | 2905篇 |
1978年 | 2535篇 |
1977年 | 1908篇 |
1976年 | 2151篇 |
1975年 | 1634篇 |
1974年 | 1429篇 |
1973年 | 1278篇 |
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
11.
徐华 《世界科学技术-中医药现代化》2022,24(5):338-348
目的 采用液质联用技术分析白鲜皮中的主要化学成分;基于网络药理学技术研究白鲜皮治疗皮肤湿疹的活性成分、作用靶点及作用机制。方法 利用液质联用技术(LC-MS)对白鲜皮主要成分进行分析,通过质谱数据结合文献资料,对各主要成分进行快速识别;通过利用SwissADME数据库对白鲜皮潜在活性成分进行预测,筛选主要作用靶点。进行KEGG通路富集分析,最终得到白鲜皮成分-靶点-疾病-通路网络图。采用分子对接技术对主要成分和作用靶点进行验证。结果 从白鲜皮中共分析鉴定了12种成分,进一步筛选得到4种潜在活性成分,可作用于48个关键靶点和14条主要通路。结论 采用LC-MS技术结合网络药理学方法,可以快速分析白鲜皮的潜在活性成分,并初步揭示了成分-靶点-通路之间的关系。通过分子对接技术可以做作用靶点进行验证。 相似文献
12.
13.
《Journal of vascular and interventional radiology : JVIR》2021,32(10):1449-1456
PurposeTo investigate the safety and efficacy of thyroid artery embolization (TAE) in the treatment of nodular goiter (NG).MethodsDuring a 5.5-year period, 56 consecutive patients with a NG underwent TAE. In Group A, there were 20 patients with a solitary/dominant 5–11-cm nodule, and in Group B, there were 36 patients with numerous nodules. Of the 56 patients, 47 (84%) had a retrosternal goiter and 25 had hyperthyroidism. In all patients, clinical and radiological evaluations were made at baseline and 6 months after TAE, and these parameters were statistically compared.ResultsIn 56 patients, 145 of the 146 thyroid arteries were successfully embolized. The 30-day mortality rate was 1.8%. Minor and major complications occurred in 25 and 2 patients, respectively. Six months after the TAE, the mean nodule volume was reduced from 80.2 mL to 25.0 mL, the mean thyroid volume was reduced from 147.0 mL to 62.6 mL, and the mean intrathoracic extension was reduced from 31.7 mm to 15.9 mm (P < .001). Of the 22 patients with non–Graves hyperthyroidism, 19 (86%) became euthyroid. The mean thyroid-related patient-reported outcome scores improved from 155.4 to 70.4 (P < .001). Of the 51 patients, 50 (98%) declared that they would recommend TAE to other patients with NG.ConclusionsTAE is safe and effective for the treatment of NG, with a significant volume reduction of the nodule(s) and thyroid gland. 相似文献
14.
15.
《Annales médico-psychologiques》2021,179(8):744-747
The teaching and clinical practice of professor Yves Pélicier contributed to the international development of a psychiatry centered on the whole of the person in a humanist approach. The theoretical developments were marked by the authenticity of the practice of the therapist and its deep sense of the human being thus truly founding a School. 相似文献
16.
《Journal of vascular and interventional radiology : JVIR》2022,33(4):359-367.e8
PurposeTo review and to compare indirectly the outcomes of minimally invasive therapies for the treatment of lower urinary tract symptoms secondary to benign prostatic hyperplasia.Materials and MethodsA literature search via Medline and Cochrane Central databases was completed for randomized control studies published between January 2000 to April 2020 for the following therapies: Rezum, Urolift, Aquablation, and prostatic artery embolization (PAE). Data on the following variables were included: International prostate symptom score (IPSS), maximum urinary flow rate, quality of life, and postvoid residual (PVR). Standard mean differences between treatments were compared through a meta-analysis using transurethral resection of the prostate (TURP) to assess differences in treatment effect.ResultsThere was no significant difference in outcomes between therapies for IPSS at the 3, 6, and 12-month follow ups. Although outcomes for Rezum were only available out to 3 months, there were no consistently significant differences in outcomes when comparing Aquablation versus PAE versus Rezum. TURP PVR was significantly better than Urolift at 3, 6, and 12 months. No significant differences in minor or major adverse events were noted.ConclusionAlthough significant differences in outcomes were limited, Aquablation and PAE were the most durable at 12 months. PAE has been well studied on multiple randomized control trials with minimal adverse events while Aquablation has limited high quality data and has been associated with bleeding-related complications. 相似文献
17.
Comprehensive evidence regarding the treatment of non-anaemic iron deficiency in patients undergoing valvular heart surgery is lacking. This study aimed to investigate the association between non-anaemic iron deficiency and postoperative outcomes in these patients. We retrospectively analysed 321 patients of which 180 (56%) had iron deficiency (defined as serum ferritin < 100 ng.ml-1 or < 300 ng.ml-1 with transferrin saturation < 20%). While the iron-deficient group had lower pre-operative haemoglobin levels than the non-iron deficient group (median (IQR [range]) 134 (127–141 [120–172]) g.l-1, 143 (133–150 [120–179]) g.l-1, p = 0.001), there was no between-group difference in allogeneic red blood cell transfusion. Median (IQR [range]) days alive and out of hospital at postoperative day 90 was 1 day shorter in the iron-deficient group (80 (77–82 [9–85]) days vs. 81 (79–83 [0–85]) days, p = 0.026). In multivariable analysis, only cardiopulmonary bypass duration (p = 0.032) and intra-operative allogeneic red blood cell transfusion (p = 0.011) were significantly associated with reduced days alive and out of hospital at postoperative day 90. Iron deficiency did not exert any adverse influence on secondary outcomes except length of hospital stay. Our findings indicate that non-anaemic iron deficiency alone is not associated with adverse effects in patients undergoing valvular heart surgery when it does not translate into an increased risk of allogeneic transfusion. 相似文献
18.
19.
Forgiveness has been found one substantial element in the recovery for women survivors from intimate partner violence following the termination of the abusive relationship. To further investigate the details of forgiveness in this specific context, the present study explored the process of forgiveness using grounded theory. In-depth and semi-structured interviews were conducted with 25 Chinese women survivors of IPV. The findings suggest that forgiveness is a strength-based process including empowerment, transformation, and integration phases. In the empowerment phase, survivors obtain strength at the intrapersonal, behavioural, and interpersonal levels. In the transformation phase, survivors complete cognitive transformation for their IPV experiences and emotional transformation towards former partners. In the integration phase, survivors—now freed from the past—reflect upon and apply the changes they have undergone. Two trajectories in the process were found. One trajectory is going through stages sequentially and the other trajectory is experiencing back and forth between empowerment and transformation stages before moving into the integration stage. The study's findings broaden our knowledge of the strength-based forgiveness process that women survivors of IPV undergo during recovery. Practitioners and policymakers could develop programmes and policies that support forgiveness by holistically facilitating their recovery and empowerment like assistance in dealing with life difficulties and promoting their reconnection with social networks. To improve the transferability and validity of the findings, the forgiveness of survivors of IPV could be explored in a diverse sample (e.g., survivors with low educational background or live in the rural area). 相似文献
20.