全文获取类型
收费全文 | 2247篇 |
免费 | 122篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 37篇 |
儿科学 | 123篇 |
妇产科学 | 108篇 |
基础医学 | 159篇 |
口腔科学 | 157篇 |
临床医学 | 193篇 |
内科学 | 445篇 |
皮肤病学 | 27篇 |
神经病学 | 204篇 |
特种医学 | 96篇 |
外科学 | 506篇 |
综合类 | 34篇 |
一般理论 | 1篇 |
预防医学 | 54篇 |
眼科学 | 71篇 |
药学 | 106篇 |
肿瘤学 | 55篇 |
出版年
2024年 | 3篇 |
2023年 | 29篇 |
2022年 | 54篇 |
2021年 | 103篇 |
2020年 | 68篇 |
2019年 | 77篇 |
2018年 | 109篇 |
2017年 | 65篇 |
2016年 | 101篇 |
2015年 | 121篇 |
2014年 | 123篇 |
2013年 | 152篇 |
2012年 | 191篇 |
2011年 | 182篇 |
2010年 | 83篇 |
2009年 | 74篇 |
2008年 | 146篇 |
2007年 | 153篇 |
2006年 | 127篇 |
2005年 | 129篇 |
2004年 | 88篇 |
2003年 | 68篇 |
2002年 | 50篇 |
2001年 | 23篇 |
2000年 | 13篇 |
1999年 | 9篇 |
1998年 | 4篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1990年 | 2篇 |
1989年 | 3篇 |
1987年 | 3篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1972年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有2376条查询结果,搜索用时 0 毫秒
51.
İbrahim Onur Alici Nilgün Yılmaz Demirci Aydın Yılmaz Funda Demirag Jale Karakaya 《Virchows Archiv : an international journal of pathology》2013,462(3):323-327
We compared the diagnostic performances of conventional smears and cell block preparations of tissue samples obtained with endobronchial ultrasound-guided transbronchial needle aspiration. We retrospectively analysed 451 patients (926 lymph nodes) who had undergone endobronchial ultrasound and for whom both smears and cell blocks were available and compared the diagnostic performances of these techniques when used alone and combined. Cell block preparations showed higher diagnostic performance over smears, but the combination was superior to either alone. The combination of smear and cell block techniques achieved a sensitivity, specificity and positive and negative predictive values of 92.5, 100, 100, 97.7 and 99.4, 95.0, 98.6, and 97.9 % for malignant and benign diseases, respectively. We recommend cell block preparations during endobronchial ultrasound-guided transbronchial needle aspiration. 相似文献
52.
Kocagoz Tanil Can Ozge Yurttutan Uyar Neval Aksoy Ece Polat Tuba Cankaya Dilara Karakus Betul Mozioglu Erkan Kocagoz Sesin 《European journal of clinical microbiology & infectious diseases》2021,40(12):2617-2622
European Journal of Clinical Microbiology & Infectious Diseases - Since its emergence in December 2019, SARS-CoV-2 is causing one of the most devastating pandemics in human history. Currently,... 相似文献
53.
Kuyumcu Serkan Isik Emine Goknur Tiryaki Tarik Onur Has-Simsek Duygu Sanli Yasemin Buyukkaya Fikret Özkan Zeynep Gözde Kalayoglu-Besisik Sevgi Unal Seher Nilgun 《Annals of nuclear medicine》2021,35(10):1147-1156
Annals of Nuclear Medicine - This study investigates the prognostic value of 68Ga-Pentixafor PET/CT using PET-derived quantitative in multiple myeloma (MM) patients with suspected recurrence in... 相似文献
54.
Ali Devrim Karaosmano?lu Mehmet Ruhi Onur Ali Shirkhoda Mustafa Ozmen Peter F. Hahn 《Korean journal of radiology》2015,16(4):853-859
Malignant kidney neoplasms are the most frequently encountered solid kidney masses. Although renal cell carcinoma is the major renal malignancy, other solid malignant renal masses should be considered in the differential diagnosis of solid renal masses that do not contain a macroscopic fatty component. In this pictorial essay, we present the imaging findings of a primitive neuroectodermal tumor, primary liposarcoma of the kidney, primary neuroendocrine tumor, leiomyosarcoma, synovial sarcoma, malignant fibrous histiocytoma, sclerosing fibrosarcoma and renal metastasis of osteosarcoma. 相似文献
55.
56.
57.
The evaluation of flap growth and long‐term results of pediatric mandible reconstructions using free fibular flaps
下载免费PDF全文
![点击此处可从《Microsurgery》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Gökhan Temiz M.D. Ufuk Bilkay M.D. Yiğit Özer Tiftikçioğlu M.D. Candan Tevfik Mezili M.D. Ecmel Songür M.D. 《Microsurgery》2015,35(4):253-261
Currently, the free fibular flap is well accepted as the first choice for mandibular reconstruction. Achieving functional results in pediatric patients requires a different approach than that employed for mature patients. Because the pediatric craniofacial skeleton continues to grow, reconstruction is more challenging, and the long‐term results can be different from those of adult patients. In this study, we sought to measure flap growth objectively in our series. Ten pediatric patients who underwent reconstruction with free fibular flaps were retrospectively reviewed. Flap growth was evaluated by comparing the intraoperative photographs with photographs of the control panoramic mandibular radiographs taken using photo‐anthropometric techniques. The measurements were converted to proportionality indices (PI), and these indices were compared. Subsequent complications and functional results were also evaluated. The mean patient age was 11.8 years, and the mean follow up was 57.7 months. The mean preoperative PI value was 10.74 ± 2.47. The mean postoperative PI value was 12.52 ± 2.34. The mean difference between the preoperative and postoperative PI values was ?1.78±0.53. These photo‐anthropometric data clearly illustrated the growth of the fibular flaps (P = 0.001). None of these patients exhibited nonunion of the fractures; however, one patient experienced a delayed union, one had chronic temporomandibular joint pain, and one had chronic temporomandibular joint luxation. In two patients, the inter‐incisive measurements were below the third percentile, and two additional patients had grade 2 eating abilities, which can be regarded as poor. All of the patients had symmetric mandibular contours. Free fibular flaps continue to grow in pediatric patients. This flap is a “workhorse” flap in children because it adapts to the craniofacial skeleton via its ability to grow, and this ability results in subsequent good cosmetic and functional results. © 2014 Wiley Periodicals, Inc. Microsurgery 35:253–261, 2015. 相似文献
58.
Fatih Ceran Salih Onur Basat Karaca Basaran Funda Akoz Saydam 《Journal of hand and microsurgery》2015,7(1):228-229
Trigger finger (TF) is a condition that affects quality of life and one of the most common causes of hand pain and disability. TF is characterized by catching, snapping or locking of the involved finger flexor tendon, associated with pain. TF in the children occurs rarely than in adults and partial tendon laceration is an uncommon cause of TF in the children. Thus, our aim in this study to define TF due to partial flexor tendon laceration in a child.
Electronic supplementary material
The online version of this article (doi:10.1007/s12593-015-0180-8) contains supplementary material, which is available to authorized users. 相似文献59.
Ozge Ozcan Abacioglu Erdinc Gulumsek Hilmi Sumbul Mehmet Kaplan Fethi Yavuz 《Arquivos brasileiros de cardiologia》2021,116(4):806
Background:Polycystic ovary syndrome (PCOS) is the most common endocrine-metabolic disease in women in reproductive age, and occurs in one of 10 women. The disease includes menstrual irregularity and excess of male hormones and is the most common cause of female infertility. Dyspnea is a frequent symptom and is often thought to be due to obesity, and whether it is due to cardiac dysfunction is unknown.Objective:To evaluate right ventricle-pulmonary artery (RV-PA) coupling and pulmonary arterial stiffness in patients with PCOS.Methods:44 PCOS patients and 60 controls were included; venous blood samples were taken for laboratory tests and 2-D, m-mode and tissue doppler transthoracic echocardiography were performed for all the participants. P<0,05 was considered as statistically significant.Results:When compared to the control group, PCOS patients had higher pulmonary artery stiffness values (p=0,001), which were positively correlated with HOMA-IR (r=0,545 and p<0,001). RV-PA coupling was also impaired in 34% of the study patients.Conclusion:Pulmonary artery stiffness is increased and RV-PA coupling is impaired in patients with PCOS. (Arq Bras Cardiol. 2021; 116(4):806-811)Palavras-chave: Diseases of the Endocrine System, Arterial Stiffness, Female infertility, Obesity, Dyspnea, Pulmonary hypertension 相似文献
60.