全文获取类型
收费全文 | 25657篇 |
免费 | 1378篇 |
国内免费 | 140篇 |
专业分类
耳鼻咽喉 | 244篇 |
儿科学 | 474篇 |
妇产科学 | 299篇 |
基础医学 | 3350篇 |
口腔科学 | 543篇 |
临床医学 | 1835篇 |
内科学 | 7029篇 |
皮肤病学 | 610篇 |
神经病学 | 1870篇 |
特种医学 | 1041篇 |
外科学 | 3961篇 |
综合类 | 110篇 |
一般理论 | 3篇 |
预防医学 | 676篇 |
眼科学 | 446篇 |
药学 | 1814篇 |
中国医学 | 91篇 |
肿瘤学 | 2779篇 |
出版年
2023年 | 229篇 |
2022年 | 459篇 |
2021年 | 705篇 |
2020年 | 331篇 |
2019年 | 493篇 |
2018年 | 599篇 |
2017年 | 511篇 |
2016年 | 582篇 |
2015年 | 591篇 |
2014年 | 764篇 |
2013年 | 860篇 |
2012年 | 1451篇 |
2011年 | 1521篇 |
2010年 | 807篇 |
2009年 | 665篇 |
2008年 | 1173篇 |
2007年 | 1301篇 |
2006年 | 1176篇 |
2005年 | 1218篇 |
2004年 | 1062篇 |
2003年 | 948篇 |
2002年 | 910篇 |
2001年 | 712篇 |
2000年 | 749篇 |
1999年 | 676篇 |
1998年 | 253篇 |
1997年 | 204篇 |
1996年 | 215篇 |
1995年 | 172篇 |
1994年 | 174篇 |
1993年 | 132篇 |
1992年 | 519篇 |
1991年 | 522篇 |
1990年 | 482篇 |
1989年 | 460篇 |
1988年 | 365篇 |
1987年 | 331篇 |
1986年 | 356篇 |
1985年 | 329篇 |
1984年 | 228篇 |
1983年 | 192篇 |
1982年 | 98篇 |
1980年 | 99篇 |
1979年 | 176篇 |
1978年 | 116篇 |
1977年 | 111篇 |
1974年 | 99篇 |
1972年 | 105篇 |
1969年 | 97篇 |
1968年 | 100篇 |
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
11.
Daisuke Kubota Takanori Kanai Fumiro Yui Tomoko Matsumoto Takahiro Kawamura Yasuhiro Itsui Eriko Okada Seishin Chin Shinya Ooka Masakazu Nagahori Kiichiro Tsuchiya Akihiro Araki Naoya Sakamoto Tatsuya Miyata Mamoru Watanabe 《Nihon Shokakibyo Gakkai zasshi》2007,104(1):42-46
A 44-year-old women developed marked myopathy one year earlier, when she was treated with intravenous prednisolone for acute severe exacerbation of ulcerative colitis. When she was admitted to our hospital for another severe exacerbation, intravenous cyclosporine A was administered as monotherapy because she could not tolerate corticosteroid. The treatment was successful and she obtained complete remission. Cyclosporine A monotherapy is considered to be a valuable alternative to proctocolectomy for severe ulcerative colitis patients who cannot tolerate corticosteroid. 相似文献
12.
Yoshitaka Imoto Naoki Muguruma Tetsuo Kimura Masako Kaji Hiroshi Miyamoto Seisuke Okamura Susumu Ito Masahiko Nakasono Mitsuyoshi Hirokawa Toshiaki Sano 《Nihon Shokakibyo Gakkai zasshi》2007,104(3):401-406
Humoral hypercalcemia of malignancy (HHM) in neoplastic syndrome has been most commonly reported in squamous cell carcinoma. Gallbladder carcinoma with HHM is uncommon. In this report, we describe a male case of gallbladder carcinoma with marked hypercalcemia and a high level of serum parathyroid hormone-related peptide (PTHrP). An immunohistochemical examination using PTHrP was also positive. 相似文献
13.
Tsutomu Yasutake Daisuke Nagatomo Toshihiko Mizuta Yuichiro Eguchi Takanori Kumagai Keisuke Ario Iwata Ozaki Tateo Kuno Kazuma Fujimoto 《Nihon Shokakibyo Gakkai zasshi》2007,104(12):1752-1757
A 16-year-old man was admitted to our hospital with nausea, general fatigue, and consciousness disturbance along with extreme hyperammoniemia eight days after the onset of symptoms. Familial history and the high concentration of orotic acid in urine lead us to a diagnosis of OTCD. We immediately initiated intensive treatment such as continuous hemodiafiltration and sodium benzoate administration; however, the patient died twelve days after admission. Since OTCD is not so rare and can be found in all ages, it should be considered fundamental for evaluation of hyperammoniemia. This case suggested that for a better prognosis of OTCD patients it is very important to prevent such an onset, and to make an as early as possible diagnosis and start to treatment. 相似文献
14.
15.
Kuri Suzuki Daisuke Nishimi Hajime Morioka Masaharu Takanami 《International journal of urology》2007,14(4):370-372
The presence of blood in the ejaculate is called hematospermia or hemospermia. While often perceived as a symptom of little significance, hematospermia can cause great concern to men who experience it. We report an unusual case of hematospermia associated with pelvic arteriovenous malformation (AVM). A 60-year-old man who visited our hospital complaining of hematospermia and pollakisuria was found to have AVM and aneurysmal changes in the left side of the pelvis using computed tomography (CT). The patient was treated with steel coil embolization of the left inferior gluteal artery, and after the procedure the hematospermia and pollakisuria remained absent without flare-ups. 相似文献
16.
We studied angiographic findings of 56 patients who were diagnosed as lacunar infarcts in the basal ganglia or deep subcortical white matter based on clinical symptomatology and brain computed tomography. In 26 patients with CT lesions less than 15 mm in diameter, only eight (31%) showed minor angiographic findings. In 30 patients with lesion of 15 mm or more, however, 22 (73%) had abnormal angiographic findings. Fourteen of the 22 patients had minor irregularities, three had 25-75% stenosis, five had 75% less than stenosis at the bifurcation of the common carotid artery or the horizontal portion of the middle cerebral artery. Our findings support the notion that a small lesion on CT can result from an occlusion of the perforating artery itself and a larger lesion is much related to the major vessel or heart diseases, i.e., emboli from the parent artery or heart, obstruction of perforators at their origin by an atheromatous plaque of the horizontal portion of the middle cerebral artery, or terminal zone infarct due to hemodynamically significant stenotic lesion. In patients with a larger deep infarct on CT, further investigation of the arteries in the carotid-axis and heart is important for determination of therapeutic indication. 相似文献
17.
Autosomal dominant neovascular inflammatory vitreoretinopathy 总被引:1,自引:0,他引:1
S R Bennett J C Folk A E Kimura S R Russell E M Stone E M Raphtis 《Ophthalmology》1990,97(9):1125-35; discussion 1135-6
Twenty-eight of 61 members of a six-generation family are affected by an autosomal dominant eye disease which has not been described previously. Affected patients are asymptomatic in early adulthood, but have vitreous cells and the selective loss of the b-wave on the electroretinogram. Later, peripheral retinal scarring and pigmentation, peripheral arteriolar closure, and neovascularization of the peripheral retina at the ora serrata or occasionally neovascularization of the optic disc develop. Cystoid macular edema, vitreous hemorrhage, tractional retinal detachment, and neovascular glaucoma can cause profound visual loss. Vitrectomy reduces traction on the retina and allows for retinal reattachment. The role of argon laser photocoagulation or cryopexy in reducing the neovascular complications remains uncertain. 相似文献
18.
Acetylcholinesterase activity and pseudocholinesterase activity were examined in plasma and in striated muscles (whole heart and diaphragm muscles) of diabetic KK-CAy mice. Both activities of acetylcholinesterase in heart muscle and pseudocholinesterase in plasma were significantly increased in diabetic KK-CAy mice compared to pre-diabetic KK-CAy mice. Both acetylcholinesterase and pseudocholinesterase activities in skeletal muscle were not changed by the diabetic state. The increases in activity of plasma pseudocholinesterase was significantly correlated to the increase in blood glucose level in alloxan-, streptozotocin (STZ)-diabetic ddY mice and diabetic KK-CAy mice. The increase was not correlated to the body weight in non-diabetic female-KK-CAy mice. Furthermore, the activity of heart acetylcholinesterase was significantly correlated with the activity of plasma pseudocholinesterase (r = 0.79, P less than 0.01). The activities of acetylcholinesterases in heart muscles from STZ- and alloxan-diabetic ddY mice also tended to increase. The hypersensitivity of the pulse rate to a low dose (1 mg/kg) of acetylcholine was correlated to the activity of plasma pseudocholinesterase (r = -0.51, P less than 0.05). These results demonstrate that the activities of plasma pseudocholinesterase were increased by the diabetic state being associated with the increasing alteration of cardiac sensitivity to acetylcholine in the whole body. 相似文献
19.
20.
M Usui T Kimura J Yamazaki 《The Journal of bone and joint surgery. American volume》1990,72(9):1370-1373
We successfully replanted five amputated legs in five patients and followed the patients for two years or more (average, six years and three months). Although some patients found it impossible to squat and to run because of joint contractures, muscle weakness, or deformities of the foot, all patients could perform other activities without difficulty. None had important pain or any intolerance to cold, and all were satisfied with the results of the replantation. 相似文献