全文获取类型
收费全文 | 7273篇 |
免费 | 741篇 |
国内免费 | 25篇 |
专业分类
耳鼻咽喉 | 180篇 |
儿科学 | 458篇 |
妇产科学 | 220篇 |
基础医学 | 663篇 |
口腔科学 | 566篇 |
临床医学 | 674篇 |
内科学 | 1414篇 |
皮肤病学 | 164篇 |
神经病学 | 553篇 |
特种医学 | 321篇 |
外科学 | 1599篇 |
综合类 | 45篇 |
一般理论 | 1篇 |
预防医学 | 273篇 |
眼科学 | 215篇 |
药学 | 393篇 |
中国医学 | 18篇 |
肿瘤学 | 282篇 |
出版年
2023年 | 143篇 |
2022年 | 76篇 |
2021年 | 236篇 |
2020年 | 189篇 |
2019年 | 225篇 |
2018年 | 448篇 |
2017年 | 344篇 |
2016年 | 441篇 |
2015年 | 424篇 |
2014年 | 460篇 |
2013年 | 869篇 |
2012年 | 430篇 |
2011年 | 431篇 |
2010年 | 470篇 |
2009年 | 250篇 |
2008年 | 195篇 |
2007年 | 115篇 |
2006年 | 240篇 |
2005年 | 164篇 |
2004年 | 85篇 |
2003年 | 77篇 |
2002年 | 95篇 |
2001年 | 147篇 |
2000年 | 114篇 |
1999年 | 134篇 |
1998年 | 139篇 |
1997年 | 99篇 |
1996年 | 128篇 |
1995年 | 84篇 |
1994年 | 94篇 |
1993年 | 80篇 |
1992年 | 57篇 |
1991年 | 57篇 |
1990年 | 44篇 |
1989年 | 29篇 |
1988年 | 35篇 |
1987年 | 18篇 |
1986年 | 27篇 |
1985年 | 23篇 |
1984年 | 31篇 |
1983年 | 21篇 |
1982年 | 25篇 |
1981年 | 27篇 |
1980年 | 24篇 |
1979年 | 22篇 |
1978年 | 11篇 |
1977年 | 10篇 |
1976年 | 13篇 |
1974年 | 11篇 |
1973年 | 8篇 |
排序方式: 共有8039条查询结果,搜索用时 15 毫秒
1.
2.
Siraj A. Khan Jahnabi Saikia Trishna Bora Vinotsole Khamo Manju Rahi 《Indian journal of medical microbiology》2022,40(3):443-445
The antigenic heterogeneity of Orientia in India is still unknown in many disease endemic areas. The present study aims to characterize the strains of O. tsutsugamushi circulating in Nagaland, Northeast India. Two patients clinically diagnosed with ST and hospitalized in Mon district hospital, Nagaland were identified from whom eschar tissues were collected. Both patients demonstrated antibodies against O. tsutsugamushi along with positive PCR amplification for 56 ?kDa gene. The prototype strain TA763 shared 90.4% homology with the sequences. Both the sequences formed a distinctive cluster demonstrating 100% similarity with strains identified from Thailand, Vietnam, China and southern parts of India. 相似文献
3.
Increased arterial stiffness in young normotensive patients with Turner syndrome: associations with vascular biomarkers
下载免费PDF全文
![点击此处可从《Clinical endocrinology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
4.
Summary Split or full thickness eyelid defects resulting from tumor destruction or surgical excision present a dilemma for plastic and reconstructive surgeons. Full thickness eyelid replacement requires composite grafting of the skin, together with tarsal support of its substitute and mucosa. The flap described by Fricke in 1829 was used for reconstruction of anterior lamella in six lower eyelid defects. In three of our cases chondromucosal grafts taken from nasal septum were utilized for posterior lamella repair. The results have been satisfactory from a functional and cosmetic standpoint. 相似文献
5.
Å. Öst P. Lindström B. Christensson H. Gyllenhammar L. Engstedt 《European journal of haematology》1984,33(2):160-170
A consecutive series of patients (1978–1981) comprising all patients with acute leukaemia from a population of 475000 inhabitants was reviewed. Thus, 94 patients were diagnosed as having acute leukaemia. No patients were lost from follow-up. The incidence figures of ALL and AML differed significantly from those of Sweden as a whole. 9 patients were < 15 years old. The median age of adult patients was 64 years, 60.8% being ≥ 60 years old. Of adult patients with AML, 20% had a preleukaemic history (chronic myeloproliferative disorders, myelodysplastic syndromes and others). None of 6 patients with leukaemia as a metamorphosis of a chronic myeloproliferative disorder achieved a complete remission. The overall remission rate of the remaining adult patients was 25%. Treated patients, 15–39 years old, with AML without any preleukaemic history, had a complete remission rate of 80% compared to 12% for patients ≥ 60 years old with the same diagnosis. Of 60 patients with ‘primary’ AML, 14 were not treated, mainly because of advanced age and complicating diseases. Most of these patients died within a week of admission. 相似文献
6.
G. Biswas S. K. Ghosh S. Mukhopadhyay H. Bora 《Indian journal of otolaryngology and head and neck surgery》2002,54(3):193-195
Out of 36511 patients attending the ENT OHD of R. G,. Aur Medical Callege & Hospital. Kolkata, in one year 0.08% patients
were found tuning naspharyngeal mass. 30 cases of nasopharyngeal mass were studied. The peak incidence of nasopharyngeal mass
was in the age group between II to 20 years (40%). The incidence in males (73%) was more than females(27%). The maximum ineldence
was found among students (74%). Commonest ntuopharyngeal nuns teas antrochoanal polyp (30%). Next commlon masses were adenoids
(23%)Juvenile angwfibroma(20%) and nasophartngeal carcinoma (13%). Nasal obstruction was the main presenting symptom(83%)
followed by epistaxis (40%). 相似文献
7.
Abstract – This report describes an esthetic, conservative, and economical alternative restoration technique for a fractured central incisor using the patient’s own tooth crown piece and a bondable reinforcement glass fiber. Although the long‐term durability of this adhesive post core restoration remains unknown, it remains successful after 1 year. 相似文献
8.
Abstract – Traumatic dental injuries often occur to the teeth and their supporting tissues and they are the main reasons for emergency visit to a dental clinic. Management of a fracture depends on its position and the extent of root involvement. Horizontal root fractures are not seen frequently and the treatment consists of reduction and long‐term rigid fixation of the coronal segment. The present case demonstrates the successful management of two horizontally fractured maxillary central incisors with a follow‐up period of 9 months. 相似文献
9.
I. Celebi S. Tekgül H. A. Özen I. Özgü D. Remzi 《International urology and nephrology》1995,27(2):183-187
Bilateral germ cell tumours of the testis are rare but a rise in their incidence is expected since with the new therapeutic
possibilities a significant improvement in prognosis has been achieved even in patients with advanced metastatic spread. Of
the 210 patients treated for malignent germ cell tumours at our Department, six (2.9%) developed a contralateral testicular
tumour. All patients had metachronous tumours and the second tumours occurred after an interval ranging between 1 and 22 years.
The epidemiology, histology, diagnosis, therapy and prognosis are discussed, and the significance of regular self-examination
of the remaining testis in patients with testicular tumour is emphasized. 相似文献
10.
Olof Lundquist Sven Österlin 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》1994,232(2):71-74
Glycation (nonenzymatic glucosylation) of collagen may play a role in the primary pathology of the vitreous in diabetes. The extent of glycation is determined by the glucose concentration in the tissue. In this study glucose concentration was assayed in blood and vitreous samples obtained from three patient groups undergoing vitrectomy: nondiabetic patients (ND), diabetic patients with insulin-dependent diabetes mellitus (IDDM) and diabetic patients with non-insulin-dependent diabetes mellitus (NIDDM). In the ND group the glucose concentration in the vitreous (3.5 +- 1.8 mM/1) was always lower than in the blood (9.1 +- 3.5 mM/1). In the diabetic groups the vitreous glucose concentration was, with a few exceptions, generally lower than the blood glucose concentration. The vitreous glucose concentration in these groups was generally higher (IDDM 9.4+-3.3 mM/1, NIDDM 7.2+-3.9 mM/1) than in the ND group, and in 15 specimens exceeded 11 mM/1, a level increasing the probability of collagen glycation in the vitreous of diabetic patients.This study was given financial support by the Herman Järnhardt Foundation, the Inez and Joel Carlsson Foundation and by Diabetesföreningen in Malmö 相似文献