全文获取类型
收费全文 | 3520篇 |
免费 | 184篇 |
国内免费 | 36篇 |
专业分类
耳鼻咽喉 | 14篇 |
儿科学 | 55篇 |
妇产科学 | 18篇 |
基础医学 | 367篇 |
口腔科学 | 92篇 |
临床医学 | 254篇 |
内科学 | 976篇 |
皮肤病学 | 56篇 |
神经病学 | 217篇 |
特种医学 | 174篇 |
外科学 | 764篇 |
综合类 | 20篇 |
预防医学 | 110篇 |
眼科学 | 72篇 |
药学 | 217篇 |
中国医学 | 5篇 |
肿瘤学 | 329篇 |
出版年
2023年 | 27篇 |
2022年 | 87篇 |
2021年 | 134篇 |
2020年 | 82篇 |
2019年 | 94篇 |
2018年 | 90篇 |
2017年 | 68篇 |
2016年 | 105篇 |
2015年 | 135篇 |
2014年 | 134篇 |
2013年 | 133篇 |
2012年 | 211篇 |
2011年 | 235篇 |
2010年 | 121篇 |
2009年 | 80篇 |
2008年 | 160篇 |
2007年 | 178篇 |
2006年 | 142篇 |
2005年 | 150篇 |
2004年 | 142篇 |
2003年 | 134篇 |
2002年 | 134篇 |
2001年 | 105篇 |
2000年 | 83篇 |
1999年 | 77篇 |
1998年 | 32篇 |
1997年 | 19篇 |
1996年 | 28篇 |
1995年 | 31篇 |
1994年 | 33篇 |
1993年 | 19篇 |
1992年 | 58篇 |
1991年 | 60篇 |
1990年 | 38篇 |
1989年 | 41篇 |
1988年 | 34篇 |
1987年 | 37篇 |
1986年 | 30篇 |
1985年 | 28篇 |
1984年 | 22篇 |
1983年 | 12篇 |
1982年 | 15篇 |
1979年 | 16篇 |
1974年 | 14篇 |
1971年 | 9篇 |
1970年 | 11篇 |
1969年 | 11篇 |
1968年 | 12篇 |
1967年 | 11篇 |
1965年 | 9篇 |
排序方式: 共有3740条查询结果,搜索用时 31 毫秒
1.
Setsuyo Morimoto Keiko Hirano Keiko Tabata Haruka Asaumi Yuko Morikawa Yuki Matsumi Shuhei Naka Michiyo Matsumoto-Nakano 《Pediatric Dental Journal》2019,29(3):138-145
Early onset periodontitis is rarely seen in infants, though often leads to an acute and serious clinical course when encountered in such patients. Autoimmune neutropenia presents systemic and dental symptoms, as depressed resistance to bacterial infection is caused by a disorder that reduces the number of neutrophils. This disease can result in not only gingival inflammation but also destruction of periodontal tissues, such as attachment loss, alveolar bone absorption, and early tooth loss in primary as well as mixed dentition. Here, we report treatment of a child with marginal periodontitis from the age of 3 years–7 years 9 months. No systemic manifestations were noted until 3 years of age, thus the patient had never received a detailed examination or medication related to the disease. Following examinations at our department, we referred the patient to a pediatrician at our university hospital for possible systemic disease, who made a diagnosis of autoimmune neutropenia. Although administration of antibiotics and professional dental care were continued, neutrophil count was not increased and progressive periodontal destruction was observed. Extraction of teeth with poor prognosis was performed and a prosthetic strategy for the missing teeth developed. It is important to recognize that periodontitis along with autoimmune neutropenia can appear in infants, even though the incidence is quite low. Early detection and early treatment of this disease is necessary for delaying progression of periodontitis and optimal occlusal induction of permanent teeth. 相似文献
2.
T Sasai S Sakakibara M Kaji T Nitta Y Masaki T Yajima M Gomibuchi S Tanaka T Shouji 《Kyobu geka. The Japanese journal of thoracic surgery》1991,44(2):132-134
Post-thoracotomy wound pain in 11 patients who underwent thoracic operation was controlled by intercostal nerve block with alcohol and thoracic epidural anesthesia. The intercostal nerve block was performed just before the closure of the thoracotomy wound. Epidural anesthesia was employed from the 1st to 5th post operative day. This method alleviated post-thoracotomy pain and obviated postoperative pulmonary complication in all patients in early post operative periods. In late post operative periods after discharge, intercostal nerve block could maintain excellent analgesia in 9 of 11 patients, only 2 patients required analgesic drugs or re-block of the intercostal nerve. Thus, intercostal nerve block with alcohol is an effective and simple option to control recalcitrant post-thoracotomy wound pain in thoracic surgery. 相似文献
3.
Yuki Izawa Masanori Yoshizumi Keisuke Ishizawa Yoshiko Fujita Shuji Kondo Shoji Kagami Kazuyoshi Kawazoe Koichiro Tsuchiya Shuhei Tomita Toshiaki Tamaki 《Hypertension research》2007,30(11):1107-1117
Big mitogen-activated protein kinase 1 (BMK1), also known as extracellular signal-regulated kinase 5 (ERK5), is a newly identified member of the mitogen-activated protein (MAP) kinase family. Recently, several studies have suggested that BMK1 plays an important role in the pathogenesis of cardiovascular disease. To clarify the pathophysiological significance of BMK1 in the process of vascular remodeling, we explored the molecular mechanisms of BMK1 activation in vascular smooth muscle cells (VSMCs). From the results of co-immunoprecipitation and immunoblotting analyses, it was found that platelet-derived growth factor (PDGF), a known potent mitogen, activated BMK1 and triggered the Gab1-SHP-2 interaction in rat aortic smooth muscle cells (RASMCs). The abrogation of SHP-2 phosphatase activity by transfection of the SHP-2-C/S mutant suppressed PDGF-stimulated BMK1 activation. Infection with an adenoviral vector expressing dominant-negative MEK5alpha, which can suppress PDGF-stimulated BMK1 activation to the control level, inhibited PDGF-induced RASMC migration. Moreover, we observed an increase of BMK1 activation in injured mouse femoral arteries. From these findings, it is suggested that BMK1 activation leads to VSMC migration induced by PDGF via Gab1-SHP-2 interaction, and that BMK1-mediated VSMC migration may play a role in the pathogenesis of vascular remodeling. 相似文献
4.
5.
Abstract: This study was investigated to clarify the role of intracellular Ca2+ following endotoxin treatment (1 mg/kg, intraperitoneally) to D-galactosamine-sensitized mice (400 mg/kg, intraperitoneally), and to observe lipid peroxide levels, an index of hepatotoxicity, in endotoxin/galactosamine (Ga1N)-challenged mice under activation of macrophages, especially Kupffer cells, by zymosan. The liver lipid peroxide level and serum glutamic pyruvic transminase activity in mice 18 hr after administration of endotoxin/Ga1N were markedly higher than those in mice treated only with endotoxin. In spite of an increase in lipid peroxide formation, there was little or no effect of Ga1N administration on xanthine oxidase and superoxide dismutase activities in mice given endotoxin. However, the injection of verapamil (10 mg/kg, subcutaneously) markedly decreased lipid peroxide levels in liver of endotoxin/Ga1N-injected mice. In the mice given a Ca2+-deficient diet, lipid peroxide level in liver after endotoxin/Ga1N injection was markedly decreased compared to that in mice fed a normal diet. Administration of dexamethasone (200 μg/kg, intraperitoneally) in mice 1 hr before treatment with endotoxin/Ga1N did not induce lipid peroxide formation. Administration of endotoxin to Ga1N-treated mice resulted in a higher level of liver cytosolic free Ca2+ ([Ca2+]i) than that in endotoxin-treated mice. On the other hand, Ca2+-ATPase activity in liver plasma membrane in the endotoxin/Ga1N-treated mice was markedly decreased as compared with endotoxin alone. On the contrary, the Ca2+-ATPase activity in liver mitochondria was higher in endotoxaemic mice treated with Ga1N than in mice given endotoxin alone. State 3 respiration and respiratory control index, which are parameters of mitochondrial function, were decreased more in the liver of mice treated with endotoxin/Ga1N than in the endotoxin-treated group. These findings suggest that [Ca2+]i may participate in the lipid peroxide formation which results from endotoxin/Ga1N-induced hepatotoxicity under conditions of zymosan-activated macrophages, and that the increases of endotoxin-sensitivity caused by Ga1N challenge may greatly contribute to Ca2+-mobilization in the hepatocyte. 相似文献
6.
FR900403, a new antifungal antibiotic produced by a Kernia sp 总被引:3,自引:0,他引:3
T Iwamoto A Fujie Y Tsurumi K Nitta S Hashimoto M Okuhara 《The Journal of antibiotics》1990,43(9):1183-1185
7.
Shinichiro Yasumoto Jun Tsujita Shuhei Imayama Yoshiaki Hori 《The Journal of dermatology》1996,23(7):499-501
We report a case of Gianotti-Crosti syndrome associated with human herpesvirus-6 (HHV-6) infection. An eight-month-old girl developed monomorphous papules on her cheeks, buttocks, and extremities after the subsidence of exanthema subitum. Viral antibody analysis confirmed primary HHV-6 infection. HHV-6 may be added to the list of causative agents of Gianotti-Crosti syndrome. 相似文献
8.
Epidemiological studies of air pollution and health effects in areas near roadways with heavy traffic in Tokyo] 总被引:2,自引:0,他引:2
M Ono M Murakami H Nitta S Nakai K Maeda 《[Nihon kōshū eisei zasshi] Japanese journal of public health》1990,37(5):321-332
Recent concern regarding health effects of air pollution in Japan has concentrated mainly on traffic-induced air pollution and its health effects in large cities. In Japan, where many people in large cities have been living near major roadways, the increase of automobile exhaust due to heavy traffic congestion will predictably cause a greater impact on people living near major roadways. We surveyed the characterization of residential suspended particulate matter (SPM) and nitrogen dioxide (NO2) concentrations along the major roadways in Tokyo, along with a health survey on the respiratory conditions of residents living in the same area, to examine the relationships between indoor pollutant levels, prevalence of respiratory symptoms and distance from roadways. The environmental monitoring was conducted in five phases. Using a newly developed SPM sampler and NO2 filter badge, continuous 4 day (96 hours) measurements were conducted in two hundred residential homes for four weeks. NO2 was measured in the living room, kitchen and outside of each home, while SPM was monitored in the living room. Health information was collected in October 1987 using ATS-DLD self-administered questionnaires. Of the 1,093 homes investigated, responses from 805 homes were received. The following results were obtained. SPM and NO2 concentrations showed large variations. Indoor pollution levels mostly depended on indoor sources, i.e. cigarette smoking and unventilated space heaters, and the effects of those indoor sources were influenced by the building structure with respect to air tightness. An association between increase in pollutant levels and the distance from the roadway was observed. However its effect is small compared to indoor source effects. The prevalence rate of respiratory symptoms was higher in those areas nearest roadways with heavy traffic both in children and adults. These results suggest the presence of a relationship between automobile exhaust and health effects. 相似文献
9.
10.
Seijiro Yoshida Yoshio Nitta Katsuhiko Oda 《The Japanese Journal of Thoracic and Cardiovascular Surgery》2005,53(4):230-233
A 65-year-old patient with ischemic heart disease and severe diabetes mellitus underwent minimally invasive direct coronary
artery bypass grafting under general combined with epidural anesthesia. Paraplegia developed after surgery and the diagnosis
of anterior spinal artery syndrome was made based on the patient s neurological condition and magnetic resonance imaging findings.
Paraplegia following epidural anesthesia is a rare but recognized complication and this complication should be taken into
account, especially in patients at risk, when considering epidural analgesia techniques in the minimally invasive cardiac
surgery. 相似文献