全文获取类型
收费全文 | 53974篇 |
免费 | 3339篇 |
国内免费 | 1467篇 |
专业分类
耳鼻咽喉 | 385篇 |
儿科学 | 950篇 |
妇产科学 | 664篇 |
基础医学 | 4428篇 |
口腔科学 | 1038篇 |
临床医学 | 4956篇 |
内科学 | 5666篇 |
皮肤病学 | 496篇 |
神经病学 | 3044篇 |
特种医学 | 1255篇 |
外国民族医学 | 6篇 |
外科学 | 5437篇 |
综合类 | 10305篇 |
现状与发展 | 1篇 |
一般理论 | 6篇 |
预防医学 | 5028篇 |
眼科学 | 937篇 |
药学 | 4585篇 |
111篇 | |
中国医学 | 7866篇 |
肿瘤学 | 1616篇 |
出版年
2023年 | 926篇 |
2022年 | 1434篇 |
2021年 | 2167篇 |
2020年 | 2067篇 |
2019年 | 2189篇 |
2018年 | 1890篇 |
2017年 | 1746篇 |
2016年 | 1639篇 |
2015年 | 1432篇 |
2014年 | 3446篇 |
2013年 | 3049篇 |
2012年 | 3058篇 |
2011年 | 3832篇 |
2010年 | 3514篇 |
2009年 | 2576篇 |
2008年 | 2361篇 |
2007年 | 2570篇 |
2006年 | 2386篇 |
2005年 | 1984篇 |
2004年 | 1599篇 |
2003年 | 1497篇 |
2002年 | 1023篇 |
2001年 | 914篇 |
2000年 | 754篇 |
1999年 | 690篇 |
1998年 | 497篇 |
1997年 | 472篇 |
1996年 | 385篇 |
1995年 | 460篇 |
1994年 | 432篇 |
1993年 | 332篇 |
1992年 | 328篇 |
1991年 | 288篇 |
1990年 | 246篇 |
1989年 | 246篇 |
1988年 | 248篇 |
1987年 | 208篇 |
1986年 | 197篇 |
1985年 | 421篇 |
1984年 | 408篇 |
1983年 | 325篇 |
1982年 | 357篇 |
1981年 | 354篇 |
1980年 | 343篇 |
1979年 | 304篇 |
1978年 | 271篇 |
1977年 | 244篇 |
1976年 | 182篇 |
1975年 | 108篇 |
1974年 | 105篇 |
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
41.
Cervical squamous cell carcinoma and endocervical adenocarcinoma (CESC) is the fourth commonest female malignancy worldwide. CESC progresses in immune-microenvironment mainly composed of infiltrating immune and stromal cells. Here, we performed an integrated analysis incorporating the expression profiles from the Cancer Genome Atlas (TCGA) database and scores of immune and stromal cells calculated by Estimation of Stromal and Immune cells in Malignant Tumours using Expression data (ESTIMATE) algorithm. A two-gene signature (CD1C and CD6 genes) was established to predict the prognosis of CESC. Based on this signature, patients were divided into the high- and low-risk groups, and this signature showed good prognostic performance according to the results of Kaplan-Meier analysis and receiver operating characteristic (ROC) analysis in train set and two validation sets. A nomogram was built for evaluating the clinical applicability of this signature. In addition, based on Tumor Immune Estimation Resource (TIMER) database, 2 hub genes showed negative correlations with tumor purity and positive correlations with infiltrating levels of immune filtrating cells. What’s more, we propose new treatment strategies for the two prognostic subtypes. Low- risk patients were found presenting with a higher level of immune checkpoint molecules and showing higher immunogenicity in immunophenoscore (IPS) analysis, which indicated a better response for immunotherapy. Meanwhile, estimated by Genomics of Drug Sensitivity in Cancer (GDSC) database, the high-risk patients showed sensitive responses to five chemotherapy drugs. Finally, 10 candidate small-molecule drugs for CESC were defined. In summary, the CD1C-CD6 signature can accurately predict the prognosis of CESC. 相似文献
42.
脾为后天之源,肾为先天之本,以后天滋先天,使从脾论治成为中医临床治疗慢性肾脏病(CKD)的经典方法。现代医学研究发现人体内最庞大的“器官”——肠道菌群与“脾”的功能非常密切。目前研究发现肠道菌群紊乱是加速CKD进展的重要环节,基于脾肾互根互用的中医原理,收集、整理肠道菌群与CKD代谢功能、免疫应答及肾脏损伤关联的文献,从肠道菌群与机体功能代谢和内环境稳态的角度进行探讨,认识到运用中医药可通过干预肠道菌群的丰度、结构和代谢功能,维持肠道微生态的平衡,从而达到调节肾脏代谢和免疫应答的作用,提出肠道菌群是从脾论治慢性肾脏病的重要生物学基础。 相似文献
43.
健康状态中医辨识是基于中医原创思维和健康理论,运用中医健康状态评价的方法和技术,形成中医健康状态评价方法体系,对健康状态进行辨识。世界卫生组织指出,21世纪的医学,不应继续以疾病为主要研究对象,而应以人类健康作为医学研究的主要方向。进行健康状态中医辨识相关研究,符合21世纪的医学将从疾病医学向健康医学转变的趋势,也符合新医改形势下卫生保健提倡的“关口前移”,对促进人群健康有重要意义。 相似文献
44.
肺与膀胱相通,上为荣养周身以御邪,下以气化排浊调津液,从肺与膀胱关系可以看出,太阳之气与肺气共同卫外,以顾护肌表皮毛,故临床针刺治疗太阳体证时可考虑从肺经穴入手。临床取肺经穴位调治膀胱及其经脉病时,应辨别虚实,采取对应的补泻手法,考虑大部分肺经穴提插、捻转补泻手法不便施展,笔者认为可根据辨证采用更为合适的迎随补泻、徐疾补泻、开阖补泻,即观其脉证,补泻择之。其实不仅肺经穴可治膀胱病,膀胱经穴亦可治肺病,由于肺与膀胱两者经气互通,其中一条经上的穴位可治疗另一条相通经的循行部位或主治方向的疾病。虽然脏腑别通理论在针灸学上具备广泛应用的基础,但因表里经脏腑相互属络关系,更多被提及、应用的是"肺与大肠相关"。容易忽视"肺膀胱别通"在"卫气供给""津液代谢"上的关联。故在临床针刺治疗膀胱病时,可从有别于常规、传统的选经取穴上论治,亦可基于"肺与膀胱相关"以膀胱经穴治肺病,或以两经同取的方式指导针刺治疗相关病证。 相似文献
45.
目的:探讨疏肝健脾法治疗月经不调的临床治疗效果,并总结相应护理方法。方法:选取自2017年9月-2018年9月在日照市中医医院接受诊疗的136例肝郁脾虚型月经不调患者随机分为对照组和研究组,对照组行逍遥丸治疗,并给予常规护理;研究组行逍遥散、参苓白术散治疗,并给予针对性护理,比较两组患者的治疗效果与护理满意度。结果:研究组治疗总有效率为91.18%(62/68),明显高于对照组的66.18%(45/68)(P<0.05);研究组患者护理满意率为94.12%(64/68),明显高于对照组的76.47%(52/68)(P<0.05)。结论:针对肝郁脾虚型月经不调患者,采取疏肝健脾法进行治疗具确切临床疗效,辅以针对性护理,还能提高患者护理满意度,值得推广应用。 相似文献
46.
Rick L. Haas Suzanne van Beek Anja Betgen Shaheen Ali Christoph J. Schneider Fenna Heres Diddens Astrid N. Scholten Folkert Koetsveld Peter Remeijer 《Practical radiation oncology》2019,9(2):115-122
Purpose
Many authors suggest that extremity soft tissue sarcomas (ESTS) do not change significantly in size during preoperative radiation therapy (RT). This cone beam computed tomography study investigates the justification to deliver the entire course with 1 initial RT plan by observing anatomic changes during RT.Methods and Materials
Between 2015 and 2017, 99 patients with ESTS were treated with either curative (n = 80) or palliative intent (n = 19) with a regimen of at least 6 fractions. The clinical target volume to planning target volume margin was 1 cm. Action levels were assigned by radiation technicians. An extremity contour change of >1 cm and/or tumor size change >0.5 cm required a physician's action before the next fraction.Results
A total of 982 cone beam computed tomography logfiles were studied. In 41 of 99 patients, the dose coverage of the initial treatment plan was fully satisfactory throughout the RT course. However, action levels were observed in 58 patients (59%). In 41 of these 58 patients, a contour increase of 5 to 23 mm was noted (29 tumor size increase only, 3 extremity contour increase, and 9 both). In 21 of 58 patients, a decrease of 5 to 33 mm was observed (20 tumor size decrease only and 1 tumor size decrease and extremity contour decrease). In 4 cases, contours initially increased and subsequently decreased. In 33 of 41 patients with increasing contours, the dose distribution adequately covered gross tumor volume because of the 1 cm planning target volume margin applied. For the remaining 8 patients (8%), the plan needed to be adapted.Conclusions
ESTS volumes may change substantially during RT in 59% of all patients, leading to plan adaptations resulting from increased volumes in 8%. Daily critical observation of these patients is mandatory to avoid geographic misses because of increases in size and overdosing of normal tissues when masses shrink. 相似文献47.
穴位埋线是长效针灸,是在传统针具和针法基础上建立和发展起来的,是针灸技术的发展和延伸,穴位埋线的核心技术是穿刺技术,穴位埋线的三大要素中,针具、埋藏物、穿刺技巧之间是互相影响、互相促进的。针具的改进成功实现了穴位埋线疗法的第一次飞跃,埋藏物的改进成功实现了穴位埋线疗法的第二次飞跃,穿刺技术的改进和创新是穴位埋线疗法的第三次飞跃。 相似文献
48.
《Clinical genitourinary cancer》2020,18(3):162-170.e4
BackgroundThe purpose of this study was to analyze trends of bladder cancer (BC) stages and incidence in Europe and the United States (US).Materials and MethodsTumor stages after radical cystectomy were assessed in a monocentric cohort from 2006 to 2016. BC incidence was assessed between 2004 and 2014 based on the German Center for Cancer Registry Data dataset at the Robert Koch Institute (n = 111,002), the Netherland Cancer Registry (n = 64,226), cancer registration statistics of England (n = 179,883), and the pooled data from the Scandinavian cancer registries, NORDCAN (n = 77,585) and the SEER (Surveillance, Epidemiology, and End Results) database (n = 184,519) for the complete populations and gender-specific subgroups. The average annual percent changes (AAPC) were used for statistical evaluation.ResultsNon–muscle-invasive BC (NMIBC) and muscle-invasive BC (MIBC) did not change in the institutional cohort at the point of radical cystectomy. The incidence of total BC (AAPC, −0.3), NMIBC (AAPC, −0.1), and non-metastasized MIBC (AAPC, 0.1) did not change in Germany during the time period under survey. BC total incidence in the Netherlands did not change significantly. In England and the Nordic countries, the incidence of total BC increased (AAPC, 0.8 and 0.5, respectively). In contrast, both the incidence of total BC (AAPC, −1.4), NMIBC (AAPC, −1.6), and non-metastasized MIBC (AAPC, −1.6) significantly decreased in the US.ConclusionsBetween 2004 and 2014 the incidence of BC was significantly sinking in the US, was stable in Germany and the Netherlands, and increased in England and the Nordic countries. Predominantly, differences in the smoking prevalence within the last decades but also gender-specific factors might be responsible for this discrepancy. 相似文献
49.
目的:探讨评价消风散合黄连解毒汤治疗湿疹效果及价值。方法:选择2017年5—12月治疗湿疹的患者54例作为对象,随机数字表分为对照组(27例)和观察组(27例)。对照组给予常规盐酸西替利嗪片治疗的方法,观察组采用消风散合黄连解毒汤治疗,15 d后对两组治疗方法的患者血清白细胞介素(Interleukin,IL)-4、γ-干扰素(γ-Interferon,IFN-γ)水平和临床治疗效果进行评估,比较两组湿疹患者体内的血清IL-4、IFN-γ含量以及患者治愈、显效、好转、无效以及总有效率的情况。结果:治疗前后两组患者IL-4、IFN-γ差异无统计学意义(P>0.05)。经15 d治疗后,观察组血清IL-4、IFN-γ水平相较于对照组有明显改善,差异有统计学意义(P<0.05),观察组患者总有效率高于对照组,临床治疗效果显著优于对照组(P<0.05)。结论:将消风散合黄连解毒汤治疗用于湿疹,相较于盐酸西替利嗪片治疗,患者血清水平更佳,临床疗效更好,值得推广应用。 相似文献