全文获取类型
收费全文 | 28333篇 |
免费 | 1485篇 |
国内免费 | 85篇 |
专业分类
耳鼻咽喉 | 349篇 |
儿科学 | 1478篇 |
妇产科学 | 698篇 |
基础医学 | 3124篇 |
口腔科学 | 628篇 |
临床医学 | 1907篇 |
内科学 | 5749篇 |
皮肤病学 | 858篇 |
神经病学 | 1778篇 |
特种医学 | 889篇 |
外科学 | 3742篇 |
综合类 | 811篇 |
一般理论 | 19篇 |
预防医学 | 1769篇 |
眼科学 | 1437篇 |
药学 | 2540篇 |
中国医学 | 183篇 |
肿瘤学 | 1944篇 |
出版年
2023年 | 177篇 |
2022年 | 186篇 |
2021年 | 956篇 |
2020年 | 479篇 |
2019年 | 647篇 |
2018年 | 810篇 |
2017年 | 572篇 |
2016年 | 699篇 |
2015年 | 671篇 |
2014年 | 1052篇 |
2013年 | 1310篇 |
2012年 | 1886篇 |
2011年 | 2024篇 |
2010年 | 1089篇 |
2009年 | 884篇 |
2008年 | 1419篇 |
2007年 | 1477篇 |
2006年 | 1478篇 |
2005年 | 1299篇 |
2004年 | 1178篇 |
2003年 | 1031篇 |
2002年 | 921篇 |
2001年 | 748篇 |
2000年 | 743篇 |
1999年 | 594篇 |
1998年 | 261篇 |
1997年 | 190篇 |
1996年 | 167篇 |
1995年 | 176篇 |
1994年 | 134篇 |
1993年 | 113篇 |
1992年 | 395篇 |
1991年 | 405篇 |
1990年 | 373篇 |
1989年 | 355篇 |
1988年 | 301篇 |
1987年 | 268篇 |
1986年 | 254篇 |
1985年 | 249篇 |
1984年 | 190篇 |
1983年 | 150篇 |
1981年 | 94篇 |
1979年 | 169篇 |
1978年 | 107篇 |
1977年 | 90篇 |
1975年 | 92篇 |
1974年 | 108篇 |
1973年 | 105篇 |
1972年 | 126篇 |
1970年 | 89篇 |
排序方式: 共有10000条查询结果,搜索用时 234 毫秒
1.
2.
3.
Jai Bhagwan Sharma 《The Indian journal of tuberculosis》2021,68(3):389-395
AimsTo demonstrate a new laparoscopic sign “Sharma's Parachute sign” in abdominopelvic tuberculosis in women with infertility.MethodsA total of 104 women who were diagnosed to have abdominopelvic tuberculosis, on endometrial sampling or on laparoscopy were enrolled in this ongoing study on tuberculosis in infertility. A new laparoscopic “Sharma's parachute sign” was looked for in these cases on laparoscopy.ResultsThe mean age, pairty and duration of infertility was 27.6 years, 0.58 and 4.1 years respectively. Menstrual dysfuction were common especially hypomenorrhoea (34.61%), oligomenorrhoea (36.53%) along with constitutional symptoms and abdomino pelvic pain or lump. Diagnosis of abdominopelvic tuberculosis was made by identification of acid fast bacilli (AFB) on microscopy or culture of endometrial aspirate or peritoneal biopsy or positive gene Xpert or positive polymerase chain reaction (PCR) or histopathological demonstration of epithelioid granuloma on endometrial or peritoneal biopsy, various laparoscopic findings on pelvic and abdominal organs were tubercles and shaggy areas (white deposits, caseous nodules encysted ascites, abdominal and pelvic adhesions, tubal findings (hydrosalpinx, pyosalpinx, beaded or calcified tubes). A new “Sharma's parachute sign”in which ascending colon was totally adherent to anterior abdominal wall with its mesocolon looking like an open parachute with small caseous nodule was seen in 11 (10.5%) cases.ConclusionDiagnostic laparoscopy is an important investigation for abdominopelvic tuberculosis showing various adhesions including new parachute sign. 相似文献
4.
5.
6.
William G. Breen Krishan R. Jethwa Nathan Y. Yu Grant M. Spears William S. Harmsen Robert C. Miller Jonathan B. Ashman William G. Rule Terence T. Sio Michelle A. Neben-Wittich Michael G. Haddock Amit Mahipal Mark J. Truty Christopher L. Hallemeier Kenneth W. Merrell 《Practical radiation oncology》2021,11(1):e63-e69
PurposeOur purpose was to determine the effect of chemoradiotherapy (CRT) on patient-reported quality of life (QOL) for patients with intact pancreas cancer.Methods and MaterialsWe reviewed a prospective QOL registry for patients with intact, clinically localized pancreatic ductal adenocarcinoma treated with CRT between June 2015 and November 2018. QOL was assessed pre-CRT (immediately before CRT, after neoadjuvant chemotherapy) and at the completion of CRT with the Functional Assessment of Cancer Therapy-Hepatobiliary (FACT-Hep) and its component parts: FACT-General (FACT-G) and hepatobiliary cancer subscore (HCS). A minimally important difference from pre-CRT was defined as ≥ 6, 5, and 8 points for FACT-G, HCS, and FACT-Hep, respectively.ResultsOf 157 patients who underwent CRT, 100 completed both pre- and post-CRT surveys and were included in the primary analysis. Median age at diagnosis was 65 years (range, 23-90). National Comprehensive Cancer Network resectability status was resectable (3%), borderline resectable (40%), or locally advanced (57%). Folinic acid, 5-fluorouracil, irinotecan, and oxaliplatin (FOLFIRINOX) (75%) or gemcitabine and nab-paclitaxel (42%) were given for a median of 6 cycles (range, 0-42) before CRT. Radiation therapy techniques included 3-dimensional conformal (22%), intensity modulated photon (55%), and intensity modulated proton (23%) radiation therapy to a median dose of 50 Gy (range, 36-62.5). Concurrent chemotherapy was most commonly capecitabine (82%). Sixty-three patients (63%) had surgery after CRT. The mean decline in FACT-G, HCS subscale, and FACT-Hep from pre- to post-CRT was 3.5 (standard deviation [SD], 13.7), 1.7 (SD 7.8), and 5.2 (SD 19.4), respectively. Each of these changes were statistically significant, but did not meet the minimally important difference threshold. Pancreatic head tumor location was associated with decline in FACT-Hep. Nausea was the toxicity with the greatest increase from pre- to post-CRT by both physician-assessment and patient-reported QOL.ConclusionsFor patients with intact pancreatic adenocarcinoma, modern CRT is well tolerated with minimal decline in QOL during treatment. 相似文献
7.
Vinke Jeroen Kaper Hans J. Vissink Arjan Sharma Prashant K. 《Clinical oral investigations》2020,24(11):4019-4030
Clinical Oral Investigations - The aims of this study are to assess different saliva substitutes for their efficacy to lubricate the oral cavity, and to relate this oral lubrication to the ability... 相似文献
8.
O.R. Mitchell R. Dave J. Bekker P.A. Brennan 《The British journal of oral & maxillofacial surgery》2021,59(3):384-385
The first COVID-19 vaccination was given in December 2020 and there is an effort to vaccinate the international population on a massive scale. Common side effects from the vaccine include headache and tiredness. Regional lymphadenopathy has been described in relation to other vaccines. We describe two cases of supraclavicular reactive lymphadenopathy presenting in patients who had the COVID vaccination in the ipsilateral arm. Awareness of this diagnosis is important for patients presenting to the neck lump clinic. 相似文献
9.
10.
Stress Testing Versus CT Angiography in Patients With Diabetes and Suspected Coronary Artery Disease
Abhinav Sharma Adrian Coles Nishant K. Sekaran Neha J. Pagidipati Michael T. Lu Daniel B. Mark Kerry L. Lee Hussein R. Al-Khalidi Udo Hoffmann Pamela S. Douglas 《Journal of the American College of Cardiology》2019,73(8):893-902