全文获取类型
收费全文 | 14190篇 |
免费 | 927篇 |
国内免费 | 38篇 |
专业分类
耳鼻咽喉 | 128篇 |
儿科学 | 391篇 |
妇产科学 | 301篇 |
基础医学 | 2315篇 |
口腔科学 | 542篇 |
临床医学 | 1590篇 |
内科学 | 2733篇 |
皮肤病学 | 335篇 |
神经病学 | 1345篇 |
特种医学 | 406篇 |
外国民族医学 | 2篇 |
外科学 | 1785篇 |
综合类 | 94篇 |
一般理论 | 6篇 |
预防医学 | 1134篇 |
眼科学 | 188篇 |
药学 | 998篇 |
中国医学 | 29篇 |
肿瘤学 | 833篇 |
出版年
2023年 | 92篇 |
2022年 | 136篇 |
2021年 | 265篇 |
2020年 | 219篇 |
2019年 | 306篇 |
2018年 | 309篇 |
2017年 | 275篇 |
2016年 | 296篇 |
2015年 | 289篇 |
2014年 | 413篇 |
2013年 | 593篇 |
2012年 | 828篇 |
2011年 | 845篇 |
2010年 | 428篇 |
2009年 | 433篇 |
2008年 | 754篇 |
2007年 | 686篇 |
2006年 | 694篇 |
2005年 | 654篇 |
2004年 | 648篇 |
2003年 | 536篇 |
2002年 | 540篇 |
2001年 | 290篇 |
2000年 | 306篇 |
1999年 | 287篇 |
1998年 | 143篇 |
1997年 | 148篇 |
1996年 | 117篇 |
1995年 | 122篇 |
1994年 | 102篇 |
1993年 | 100篇 |
1992年 | 217篇 |
1991年 | 221篇 |
1990年 | 216篇 |
1989年 | 204篇 |
1988年 | 207篇 |
1987年 | 207篇 |
1986年 | 205篇 |
1985年 | 202篇 |
1984年 | 119篇 |
1983年 | 147篇 |
1982年 | 107篇 |
1981年 | 116篇 |
1980年 | 82篇 |
1979年 | 119篇 |
1978年 | 106篇 |
1977年 | 101篇 |
1976年 | 77篇 |
1975年 | 74篇 |
1974年 | 71篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
Albert De Decker Rosalie Fergusson Benjamin Ondruschka Niels Hammer Johann Zwirner 《Clinical anatomy (New York, N.Y.)》2020,33(4):522-529
For 50 years now, sacrospinous ligament fixation (SSLF) has been used to treat pelvic organ prolapse consequent on altered integrity of the pelvic myofascial structures. It is usually performed vaginally, but it has recently been performed laparoscopically through either an anterior or a posterior approach, with the broad ligament as a landmark to differentiate the two. In the present study, these two laparoscopic approaches were assessed using Thiel-embalmed cadavers. The anterior and posterior approaches were compared in terms of the closest distance to anatomical structures at risk, including pelvic viscera, the obturator nerve, and vascular structures. The posterior approach was more often closer to the investigated vessels and the rectum. The obturator nerve and the ureter were close to both the anterior and posterior approaches. The urinary bladder was closer using the anterior approach. From an anatomical standpoint, therefore, the anterior laparoscopic approach for SSLF is more likely to cause injury to the urinary bladder, whereas the posterior approach is more prone to causing rectal and vessel injuries. This study illustrates, from a basic science perspective, the importance of combining fascia research, novel endoscopic or minimally invasive surgical exposures informed by anatomy, and contemporary trends in gynecology in order to improve patient outcomes. Clin. Anat. 33:522–529, 2020. © 2019 Wiley Periodicals, Inc. 相似文献
6.
Marie Warrer Petersen Tine Sylvest Meyhoff Marie Helleberg Maj-Brit Nørregaard Kjær Anders Granholm Carl Johan Steensen Hjortsø Thomas Steen Jensen Morten Hylander Møller Peter Buhl Hjortrup Mik Wetterslev Gitte Kingo Vesterlund Lene Russell Vibeke Lind Jørgensen Klaus Tjelle Thomas Benfield Charlotte Suppli Ulrik Anne Sofie Andreasen Thomas Mohr Morten H. Bestle Lone Musaeus Poulsen Mette Friberg Hitz Thomas Hildebrandt Lene Surland Knudsen Anders Møller Christoffer Grant Sølling Anne Craveiro Brøchner Bodil Steen Rasmussen Henrik Nielsen Steffen Christensen Thomas Strøm Maria Cronhjort Rebecka Rubenson Wahlin Stephan Jakob Luca Cioccari Balasubramanian Venkatesh Naomi Hammond Vivekanand Jha Sheila Nainan Myatra Christian Gluud Theis Lange Anders Perner 《Acta anaesthesiologica Scandinavica》2020,64(9):1365-1375
Introduction
Severe acute respiratory syndrome coronavirus-2 has caused a pandemic of coronavirus disease (COVID-19) with many patients developing hypoxic respiratory failure. Corticosteroids reduce the time on mechanical ventilation, length of stay in the intensive care unit and potentially also mortality in similar patient populations. However, corticosteroids have undesirable effects, including longer time to viral clearance. Clinical equipoise on the use of corticosteroids for COVID-19 exists.Methods
The COVID STEROID trial is an international, randomised, stratified, blinded clinical trial. We will allocate 1000 adult patients with COVID-19 receiving ≥10 L/min of oxygen or on mechanical ventilation to intravenous hydrocortisone 200 mg daily vs placebo (0.9% saline) for 7 days. The primary outcome is days alive without life support (ie mechanical ventilation, circulatory support, and renal replacement therapy) at day 28. Secondary outcomes are serious adverse reactions at day 14; days alive without life support at day 90; days alive and out of hospital at day 90; all-cause mortality at day 28, day 90, and 1 year; and health-related quality of life at 1 year. We will conduct the statistical analyses according to this protocol, including interim analyses for every 250 patients followed for 28 days. The primary outcome will be compared using the Kryger Jensen and Lange test in the intention to treat population and reported as differences in means and medians with 95% confidence intervals.Discussion
The COVID STEROID trial will provide important evidence to guide the use of corticosteroids in COVID-19 and severe hypoxia.7.
Bo Jørgensen MD ; Gitte Juel Friis PhD ; Finn Gottrup MD DMSci 《Wound repair and regeneration》2006,14(3):233-239
Wound pain is a serious problem for elderly patients suffering from chronic leg ulcers, and it may lead to reduced wound healing rates and reduced quality of life. Biatain-Ibu Non-adhesive (Coloplast A/S), a new pain-reducing moist wound healing dressing containing ibuprofen was tested for pain reduction, safety, and efficacy on 10+2 patients in a single-blinded crossover study against Biatain Non-adhesive (Coloplast A/S). Pain was measured with a Numeric Box Scale before, during, and after dressing change. Quality of life was measured using the World Health Organization-5 Well-Being Index. Dressing moist wound healing properties such as absorption capacity and leakage were tested together with assessment of wound exudate and blood plasma content of ibuprofen. Use of the Biatain-Ibu foam dressing correlated with a decrease in pain intensity scores from 7 in the run-in period to approximately 2.5 in the Biatain-Ibu treatment phase. Quality of life measures were improved which together with the reduced pain could contribute to faster wound healing. The moist wound healing properties of Biatain-Ibu were similar to that of the Biatain Non-adhesive and ulcer size was reduced by 24% during the treatment period. Neither side effects nor systemic plasma concentrations of ibuprofen were observed. These data indicate that Biatain-Ibu could reduce persistent and temporary wound pain, increase Quality of life, was found safe to use, and had excellent moist wound healing properties. 相似文献
8.
9.
Jeff Anglen Peter Steven Apostoles Gordon Christensen Barry Gainor Joel Lane 《Journal of orthopaedic research》1996,14(2):251-254
We examined the efficacy of various irrigation solutions delivered through a power irrigator to remove bacteria from three different surfaces. Titanium, stainless-steel, and cortical bone surfaces were coated with three different bacterial species: Staphylococcus aureus, Pseudomonas aeruginosa, and Staphylococcus epidermidis. They were then irrigated with 1 L of fluid delivered by jet lavage. The fluids tested were normal saline and solutions of bacitracin, neomycin, and soap. One set of specimens was not irrigated, as a control. After irrigation, the specimens were sonicated to remove residual bacteria, and the sonicate was quantitatively cultured to allow evaluation of the amount of residual bacteria on the surface. The results showed that removal of bacteria reflects an interaction between bacterial species, surface characteristics, and irrigation solution. Fewer bacteria were present in all the irrigation groups than in the control. Soap solution was as good as or better than any other solution at removing all three types of bacteria from all three surfaces, although not all of the pairwise comparisons were statistically significant. There was a significant advantage to soap solution over antibiotic irrigant or saline alone in removing Staphylococcus epidermidis from metallic surfaces. The use of a soap solution for irrigation seems to improve the removal of some bacteria from some surfaces in this experimental model and may represent a better type of irrigation additive. 相似文献
10.
A case of systemic lupus erythematosus (SLE) with focal involvement of the rectum is reported. The lesion roentgenologically resembled a malignant tumour and was resected. Histologic examination disclosed only typical SLE changes in a very restricted area, with the remaining gastrointestinal tract unaffected. This appears to be the first report of focal colitis as a complication of SLE. The case points the importance of suspecting symptoms from any organ system in patients with connective tissue disorders to be manifestations of that underlying pathology. 相似文献