全文获取类型
收费全文 | 189620篇 |
免费 | 32891篇 |
国内免费 | 2562篇 |
专业分类
耳鼻咽喉 | 5832篇 |
儿科学 | 5998篇 |
妇产科学 | 3099篇 |
基础医学 | 8226篇 |
口腔科学 | 2684篇 |
临床医学 | 29362篇 |
内科学 | 56301篇 |
皮肤病学 | 7963篇 |
神经病学 | 17953篇 |
特种医学 | 7651篇 |
外科学 | 47604篇 |
综合类 | 406篇 |
现状与发展 | 72篇 |
一般理论 | 2篇 |
预防医学 | 8405篇 |
眼科学 | 3944篇 |
药学 | 4272篇 |
中国医学 | 84篇 |
肿瘤学 | 15215篇 |
出版年
2024年 | 693篇 |
2023年 | 4955篇 |
2022年 | 1582篇 |
2021年 | 3748篇 |
2020年 | 6335篇 |
2019年 | 2609篇 |
2018年 | 7901篇 |
2017年 | 7728篇 |
2016年 | 8889篇 |
2015年 | 8924篇 |
2014年 | 16162篇 |
2013年 | 16531篇 |
2012年 | 7007篇 |
2011年 | 7122篇 |
2010年 | 11280篇 |
2009年 | 15017篇 |
2008年 | 7378篇 |
2007年 | 5755篇 |
2006年 | 8171篇 |
2005年 | 5429篇 |
2004年 | 4662篇 |
2003年 | 3678篇 |
2002年 | 3714篇 |
2001年 | 5376篇 |
2000年 | 4756篇 |
1999年 | 4680篇 |
1998年 | 4089篇 |
1997年 | 3831篇 |
1996年 | 3706篇 |
1995年 | 3495篇 |
1994年 | 2209篇 |
1993年 | 1802篇 |
1992年 | 2465篇 |
1991年 | 2313篇 |
1990年 | 1943篇 |
1989年 | 2106篇 |
1988年 | 1834篇 |
1987年 | 1674篇 |
1986年 | 1657篇 |
1985年 | 1475篇 |
1984年 | 1070篇 |
1983年 | 939篇 |
1982年 | 728篇 |
1981年 | 563篇 |
1980年 | 541篇 |
1979年 | 788篇 |
1978年 | 602篇 |
1977年 | 648篇 |
1975年 | 483篇 |
1972年 | 507篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
Although psychoanalysis was the first-choice treatment for premature ejaculation (PE) between 1920 and 1960, hardly any reports on its efficacy have been published. Moreover, a scientific debate about its findings has never been fully developed. The recent progress that has been made in the classification of three different PE syndromes creates a new opportunity for psychoanalytic investigations of men with complaints of PE, distinguished by the actual duration of their intravaginal ejaculation latency time (IELT). The term premature-like ejaculatory dysfunction has been introduced to distinguish men with self-perceived PE at normal and long IELT durations from those men with lifelong, acquired and normal variable PE. Psychoanalytic research may contribute to a better understanding of the consequences of objective early ejaculations on the unconscious mental life of men with the four forms of PE. By integrating neurobiological, clinical and epidemiological data of ejaculatory performance, a revival of psychoanalytic research of PE in the four distinct, classified PE groups, will probably contribute to a deeper insight in to the unconscious mental life of men affected by PE. 相似文献
12.
13.
Fibromyalgia is a syndrome of widespread pain, nonrestorative sleep, disturbed mood, and fatigue. Optimal treatment involves
a multidisciplinary approach with a team of health care providers using pharmacologic and nonpharmacologic treatment. Because
of the heterogeneity of the illness, management should be individualized for the patient. Pharmacologic treatment should address
issues of pain control, sleep disturbance, fatigue, and any underlying coexisting mood disorder. Nonpharmacologic treatment
should include patient education, a regular exercise and stretching program, and cognitive behavioral therapy. All of these
are essential to improving functional capacity and quality of life. This review provides general guidelines in initiating
a successful pharmacologic treatment program for patients with fibromyalgia. 相似文献
14.
15.
16.
Akira Sugawara Kazuhisa Takeuchi Takashi Suzuki Keiichi Itoi Hironobu Sasano Sadayoshi Ito 《Hypertension research》2003,26(8):663-668
We describe a case of aldosterone-producing adrenocortical adenoma (APA) associated with a probable post-operative adrenal crisis possibly due to subtle autonomous cortisol secretion. The patient was a 46-year-old female who suffered from severe hypertension and hypokalemia. CT and MRI scans revealed a 2-cm diameter adrenal mass. The patient's plasma aldosterone level was increased, and her plasma renin activity was suppressed, both of which findings were consistent with APA. Cushingoid appearance was not observed. Morning and midnight serum cortisol and plasma adrenocorticotropic hormone (ACTH) levels were all within the normal range. Her serum cortisol level was suppressed to 1.9 microg/dl as measured by an overnight 1-mg dexamethasone suppression test, but was incompletely suppressed (2.7 microg/dl) by an overnight 8-mg dexamethasone suppression test. In addition, adrenocortical scintigraphy showed a strong uptake at the tumor region and a complete suppression of the contra-lateral adrenal uptake. After unilateral adrenalectomy, she had an episode of adrenal crisis, and a transient glucocorticoid replacement improved the symptoms. Histopathological studies demonstrated that the tumor was basically compatible with APA. The clear cells in the tumor were admixed with small numbers of compact cells that expressed 17alpha-hydroxylase, suggesting that the tumor was able to produce and secrete cortisol. In addition, the adjacent non-neoplastic adrenal cortex showed cortical atrophy, and dehydroepiandrosterone sulfotransferase immunoreactivity in the zonae fasciculata and reticularis was markedly diminished, suggesting that the hypothalamo-pituitary-adrenal (HPA) axis of the patient was suppressed due to neoplastic production and secretion of cortisol. Together, these findings suggested that autonomous secretion of cortisol from the tumor suppressed the HPA axis of the patient, thereby triggering the probable post-operative adrenal crisis. Post-operative adrenocortical insufficiency should be considered in clinical management of patients with relatively large APA, even when physical signs of autonomous cortisol overproduction are not apparent. 相似文献
17.
T. Suzuki M. Shindo K. Soma 《European journal of orthopaedic surgery & traumatology : orthopedie traumatologie》2006,16(3):214-218
In floating hip injuries, the priority of the steps in fixation has not been well described. We have treated these patients in accordance with the following protocols. In patients with pelvic ring fractures, the external fixation should be performed first, and in patients with acetabular fractures, the femoral fractures should be internally fixated first. The purpose of the present study was to review our experience with these fracture treatments to evaluate our strategy. For 8 years, 31 patients with femoral fractures associated with ipsilateral fractures: 26 unstable pelvic ring fractures and 7 unstable acetabular fractures were surgically treated at our level 1 trauma center. We reviewed the admission, operation, and follow-up records retrospectively and evaluated the order of the fixation and the complications. Two patients with acetabular fractures failed to follow our protocol outlined at the preoperative planning stage. There were no surgical difficulties other than two patients with the hemipelvis dislocated proximally who required traction of the fixated femur. The complications that were thought to be related to our protocol were one fat embolism syndrome and one pubic fracture displacement. One heterotopic ossification seemed to occur due to using a single approach for both fractures. We believe our protocol to be generally effective, however, in patients with acetabular and vertical shear type pelvic ring fractures, the internal or external fixation of the femur should be performed before the internal fixation of the pelvis. 相似文献
18.
19.
Kengo Maeda Shinji Kume Yoshihiko Nishio Shiro Maeda Yasuhiro Nishida Mikio Suzuki Takahiro Nakaguchi Toru Kawabata Osamu Hashimoto Takashi Hisanaga Atsunori Kashiwagi Hitoshi Yasuda 《Clinical neurology》2006,46(4):266-269
We report a 53-year-old woman with severe Graves' ophthalmopathy accompanied by uncontrolled myasthenia gravis. She presented remarkable exophthalmos, chemosis, and restriction of eye movement. Despite plasma exchange, steroid pulse therapy, local injection of steroid, and irradiation, ocular symptoms did not ameliorate. Since optic neuropathy was seen, orbital decompression surgery was performed in the left eye. Bilateral chemosis was improved after the surgery. Five years after surgery, there was no ocular palsy in the operated left eye, but in the contralateral eye. For the good prognosis of the eye movement, orbital decompression might be recommended in the severe Graves' ophthalmopathy accompanied by the optic neuropathy and/or ophthalmoplegia with proptosis. 相似文献
20.