全文获取类型
收费全文 | 12148篇 |
免费 | 619篇 |
国内免费 | 97篇 |
专业分类
耳鼻咽喉 | 72篇 |
儿科学 | 288篇 |
妇产科学 | 204篇 |
基础医学 | 1400篇 |
口腔科学 | 178篇 |
临床医学 | 766篇 |
内科学 | 3543篇 |
皮肤病学 | 205篇 |
神经病学 | 804篇 |
特种医学 | 386篇 |
外科学 | 2234篇 |
综合类 | 44篇 |
预防医学 | 239篇 |
眼科学 | 85篇 |
药学 | 760篇 |
中国医学 | 28篇 |
肿瘤学 | 1628篇 |
出版年
2024年 | 6篇 |
2023年 | 100篇 |
2022年 | 194篇 |
2021年 | 366篇 |
2020年 | 214篇 |
2019年 | 284篇 |
2018年 | 326篇 |
2017年 | 249篇 |
2016年 | 296篇 |
2015年 | 335篇 |
2014年 | 418篇 |
2013年 | 452篇 |
2012年 | 872篇 |
2011年 | 882篇 |
2010年 | 520篇 |
2009年 | 436篇 |
2008年 | 754篇 |
2007年 | 789篇 |
2006年 | 821篇 |
2005年 | 760篇 |
2004年 | 797篇 |
2003年 | 759篇 |
2002年 | 779篇 |
2001年 | 126篇 |
2000年 | 65篇 |
1999年 | 142篇 |
1998年 | 181篇 |
1997年 | 142篇 |
1996年 | 124篇 |
1995年 | 91篇 |
1994年 | 89篇 |
1993年 | 70篇 |
1992年 | 57篇 |
1991年 | 45篇 |
1990年 | 39篇 |
1989年 | 26篇 |
1988年 | 22篇 |
1987年 | 22篇 |
1986年 | 20篇 |
1985年 | 18篇 |
1984年 | 26篇 |
1983年 | 17篇 |
1982年 | 20篇 |
1981年 | 17篇 |
1980年 | 20篇 |
1979年 | 17篇 |
1978年 | 9篇 |
1977年 | 12篇 |
1975年 | 5篇 |
1974年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
22.
Yoshihiko Tsuji Hiroaki Ohue Hiroshi Ikuta Osamu Kinoshita Fumio Shibagaki 《Surgery today》1997,27(5):387-391
Between January 1985 and September 1994, 21 patients with psychiatric disorders underwent various forms of surgery at our
hospital. There were 12 men and 9 women with an average age of 57.6 years. The coexisting psychiatric disorders were schizophrenia
in 15 patients, depression in 2, dementia in 2, mental retardation with epilepsy in 1, and Parkinson's disease in 1. All the
patients had been receiving neuroleptic medications for a long period. The indications for surgery were: cholelithiasis in
6 patients, acute appendicitis in 4, perforation of the small intestine in 3, incarceration of an inguinal hernia in 2, and
esophageal cancer, stomach cancer, bleeding from a gastric ulcer, perforation of a duodenal ulcer, strangulating ileus, and
burns in 1 patient each, respectively. All of the patients who underwent elective surgery were given epidural anesthesia with
or without general anesthesia. Antipsychotic medications were given until just prior to surgery and recommenced concurrent
with the first meal. Abnormal behavior was observed in 11 patients (52.4%) postoperatively, but all the patients were discharged
in accordance with recovery from their surgical disorder. Intra- and postoperative hypotension resistant to intravenous catecholamine
administration was recognized in 9 patients (42.9%), and this peculiar complication should be borne in mind when patients
with psychiatric disorders require surgical management.
Presented at the 94th annual meeting of the Japanese Surgical Society, held in Tokyo in March, 1994 相似文献
23.
We report herein the case of a 56-year-old woman who developed secondary Kwashiorkor 9 years after undergoing a total gastrectomy for early gastric cancer. Until she began developing the symptoms of Kwashiorkor, including general fatigue, edema of the face and extremities, anemia, alopecia, and weight loss, she had been leading a normal life post-gastrectomy. Her symptoms were alleviated by total parenteral nutrition (TPN) therapy, but reappeared soon after TPN therapy was discontinued. Therefore, she required several subsequent courses of TPN. In an attempt to permanently resolve the ongoing Kwashiorkor symptoms, reconstructive surgery involving transposition of the jejunum from the previous Graham method to the interposition method was performed 10 years after the initial gastrectomy. After the second operation, her malnutrition was completely alleviated, and she has been in good health for the 8 years since. To our knowledge, there has been no other report of the symptoms of secondary Kwashiorkor after total gastrectomy being alleviated by altering the procedure of reconstruction of the intestinal tract. Thus, we recommend surgical treatment to alter the digestive continuity to a more physiological pathway for selected patients with secondary Kwashiorkor syndrome. 相似文献
24.
25.
Shibahara Hiroaki; Shigeta Minoru; Inoue Miyuki; Hasegawa Akiko; Koyama Koji; Alexander Nancy J.; Isojima Sinzo 《Human reproduction (Oxford, England)》1996,11(12):2595-2599
The blocking effects of complement-dependent sperm immobilizingantibodies in the sera of infertile women and monoclonal antispermantibodies against humans and mice on fertilization were investigated.The hemizona assay (HZA) and sperm penetration assay (SPA) wereused to study the inhibitory effects of sera from 22 infertilepatients positive for sperm immobilizing antibodies. Use ofthese tests allowed us to differentiate whether the antibodyblocked spermzona pellucida tight binding and/or spermpenetration into the ooplasm. The zona pellucida penetrationassay (ZPA) was also used to study the effects of four monoclonalantibodies (mAbs) on human sperm penetration into the zona pellucida.Seven mAbs against murine spermatozoa were tested for theirinhibitory effects on in-vitro fertilization (IVF) and HZA inmice. Of 22 patient sera with sperm immobilizing antibodies,21 (95.5%) inhibited HZA attachment and penetration, whereasthis did not occur in any of 13 patient sera without these antibodies.However, 19 of 22 (86.4%) patient sera with sperm immobilizingantibodies and eight of 13 (61.5%) patient sera without theseantibodies inhibited the SPA. Two (2C6, 1G12) of four mAbs againsthuman spermatozoa showed strong inhibitory effects in all theassays (HZA, ZPA and SPA). One mAb (3B10) did not inhibit HZAbut blocked ZPA and SPA. Another mAb (H6-3C4) seemed to haveno inhibitory effects on fertilization. Two (Vx 5 and Vx 8)of seven mAbs against murine spermatozoa inhibited IVF in micebut did not block mouse HZA. These findings suggest that antispermantibodies block fertilization at specific stages. Some of themmay inhibit sperm capacitation and thus prevent all processesof fertilization that follow. Some other antibodies may notaffect capacitation and sperm binding to zona pellucida butinhibit the acrosome reaction, followed by the blocking of spermpenetration through zona pellucida and ooplasm. 相似文献
26.
Naoaki Takemoto Hiroaki Kuroda Yoshinobu Nakamura Takashi Ichiba Naruto Matsuda Yasushi Ashida Takafumi Hamasaki Yohichi Hara Shingo Ishiguro Tohru Mori 《Surgery today》1996,26(3):179-183
The effects of calcium (Ca) on a hyperkalemic cardioplegic solution for continuous cardioplegia were examined in an isolated perfused working rat heart model. The coronary arteries were perfused with a modified Krebs-Henseleit bicarbonate buffer (K-H) solution, containing various concentrations of Ca(0.1, 0.6, 1.2, and 2.5 mmol/l) and a high concentration of potassium (20 mmol/l), for 180 min, after which cardiac arrest was induced at 37°C for 180 min. Cardiac function and creatine kinase (CK) were measured. In the control group, K-H solution was infused in place of the cardioplegic solution, and cardiac arrest was not induced. No significant differences were observed between the groups infused with the K-H solution containing Ca concentrations of 0.6, 1.2, and 2.5 mmol/l in the percent recovery of aortic flow (82.1±2.9%, 80.6±2.0%, and 71.5±3.7% (mean±SEM) respectively) or in the recovery of other indices of cardiac function, or in CK leakage. There were also no significant differences in the recovery of cardiac function and CK leakage between these groups and the control group. In the Ca 0.1 mmol/l group, however, the characteristic Ca paradox was observed. These findings suggest that if the Ca concentration in a cardioplegic solution is higher than 0.6 mmol/l during continuous cardioplegia, excellent cardioprotective effects will be achieved. 相似文献
27.
Hiroshi Okimura Masahiko Muto Makoto Ichimiya Satoshi Mogami Hiroaki Takahata Chidori Asagami 《The Journal of dermatology》1996,23(9):631-634
A 58-year-old Japanese woman who had herpes zoster in association with colitis was successfully treated with intravenously administrated acyclovir. Vesicular lesions with red haloes ranged from the left side of her buttock to the left extremity, corresponding to the L4 to S2 dermatomes. Her colitis was considered to have been induced by varicella-zoster virus, based on the facts that the clinical courses were correlated and that the innervation of the affected site of the colon corresponded to an infected dermatome (S2). 相似文献
28.
A 47-year-old woman visited a clinic with dyspnea which had continued for two months and was followed by general fatigue and fever. Antibiotics were not effective. Edematous erythema occurred on her face, elbows, knees and feet, and she entered our hospital. A skin biopsy revealed interface dermatitis with severe edema and mucinosis in dermis. Diffuse bilateral infiltration was observed in the chest X-ray, and laboratory findings showed increased LDH, GPT, GOT and CPK. No antinuclear factor was detected. Her respiratory condition rapidly worsened, and she died eight days after hospitalization in spite of corticosteroid pulse therapy. The autopsy revealed that the main cause of death was diffuse alveolar damage (DAD). Interstitial pneumonia related to dermatomyositis is not histologically uniform; the response to the therapy depends on its histological type. The patients with dermatomyositis who have poor prognosis are clinically characterized by acute onset with general symptoms and less pronounced muscle weakness; they generally show DAD in their lungs. We need to establish a simple method for distinguishing histological types of interstitial pneumonia and adequate therapy for each one. 相似文献
29.
Shunsuke Imai Susumu Sekigawa Yoshitaka Ohno Hiroaki Yamamoto Yoshihiko Tsubura 《Pathology international》1981,31(1):129-133
A case of giant cell carcinom of the pancreas is reported herein. The patient is a 67-year-old Japanese woman complaining of ascites, general fatigue, loss of weight, abdominal distention, nausea, and vomiting. Cytological diagnosis of ascites revealed adenocarcinoma. At autopsy, a whitish tumor measuring around 5 cm in diameter was found at the head of the pancreas. Metastasis was seen only in the liver. Histological examination displayed bizarre multinucleated giant cells occasionally phagocytosing the tumor cells and neutrophils. 相似文献
30.
Systematic changes in gene expression in postmortem human brains associated with tissue pH and terminal medical conditions 总被引:8,自引:0,他引:8