全文获取类型
收费全文 | 1337497篇 |
免费 | 94075篇 |
国内免费 | 2911篇 |
专业分类
耳鼻咽喉 | 19719篇 |
儿科学 | 40249篇 |
妇产科学 | 38692篇 |
基础医学 | 187392篇 |
口腔科学 | 39847篇 |
临床医学 | 112748篇 |
内科学 | 262625篇 |
皮肤病学 | 30216篇 |
神经病学 | 106464篇 |
特种医学 | 53760篇 |
外国民族医学 | 435篇 |
外科学 | 208437篇 |
综合类 | 31064篇 |
现状与发展 | 6篇 |
一般理论 | 436篇 |
预防医学 | 92117篇 |
眼科学 | 31373篇 |
药学 | 100126篇 |
4篇 | |
中国医学 | 2988篇 |
肿瘤学 | 75785篇 |
出版年
2018年 | 11764篇 |
2015年 | 11890篇 |
2014年 | 16719篇 |
2013年 | 25280篇 |
2012年 | 33075篇 |
2011年 | 34934篇 |
2010年 | 20765篇 |
2009年 | 20251篇 |
2008年 | 33633篇 |
2007年 | 36759篇 |
2006年 | 37318篇 |
2005年 | 36077篇 |
2004年 | 35152篇 |
2003年 | 34118篇 |
2002年 | 33663篇 |
2001年 | 63657篇 |
2000年 | 65363篇 |
1999年 | 55427篇 |
1998年 | 14670篇 |
1997年 | 13475篇 |
1996年 | 12952篇 |
1995年 | 12229篇 |
1994年 | 11481篇 |
1992年 | 42797篇 |
1991年 | 41303篇 |
1990年 | 40577篇 |
1989年 | 39568篇 |
1988年 | 36983篇 |
1987年 | 36427篇 |
1986年 | 34917篇 |
1985年 | 33124篇 |
1984年 | 24838篇 |
1983年 | 21067篇 |
1982年 | 12669篇 |
1981年 | 11574篇 |
1980年 | 10777篇 |
1979年 | 23932篇 |
1978年 | 17073篇 |
1977年 | 14848篇 |
1976年 | 13387篇 |
1975年 | 15272篇 |
1974年 | 18082篇 |
1973年 | 17567篇 |
1972年 | 16814篇 |
1971年 | 15723篇 |
1970年 | 14918篇 |
1969年 | 14350篇 |
1968年 | 13462篇 |
1967年 | 12019篇 |
1966年 | 11261篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Ming-Yeh Yang Ching-Yuan Huang Tina H.T. Chiu Kai-Chih Chang Ming-Nan Lin Liang-Yü Chen Anren Hu 《Yao wu shi pin fen xi = Journal of food and drug analysis.》2019,27(2):494-501
Vitamin D is responsible for multiple metabolic functions in humans. Rickets are the most common disease caused by vitamin D deficiency. It is caused by poor calcium intake resulting in poor serum-ionized calcium. The purpose of this study is to develop a rapid, sensitive, and feasible method to determine the 25-hydroxy-vitamin D3 (25(OH)D3) levels in blood samples for clinical assessment. In this study, gas chromatography coupled mass spectrometry with trimethylsilyl derivatization (TMS-GC-MS) is the most suitable protocol for quantitative analyses of 25(OH)D3. Performance of method was evaluated and compared with liquid chromatography and immunoassay. Method validation has been carried out with plasma specimens. The limit of quantitation of TMS-GC-MS method is 1.5 ppb with good linear correlation. Furthermore, the dietary intake and nutritional status of vegetarian and non-vegetarians in Taiwan were assessed by our validated method. As a result, this vitamin D nutrition survey demonstrates that most Taiwanese people have insufficient vitamin D. Due to dietary habits; the male vegans may have the highest risk of vitamin D deficiency. 相似文献
102.
M. Masson Regnault J. Castañeda-Sanabria M.H.T. Diep Tran M. Beylot-Barry H. Bachelez N. Beneton O. Chosidow A. Dupuy P. Joly D. Jullien E. Mahé M.-A. Richard M. Viguier F. Tubach E. Sbidian C. Paul The PsoBioTeq Study Group 《Journal of the European Academy of Dermatology and Venereology》2020,34(2):293-300
103.
104.
105.
Leah H. Cobb Emily M. McCabe Lauren B. Priddy 《Journal of orthopaedic research》2020,38(10):2091-2103
Osteomyelitis, or the infection of the bone, presents a major complication in orthopedics and may lead to prolonged hospital visits, implant failure, and in more extreme cases, amputation of affected limbs. Typical treatment for this disease involves surgical debridement followed by long-term, systemic antibiotic administration, which contributes to the development of antibiotic-resistant bacteria and has limited ability to eradicate challenging biofilm-forming pathogens including Staphylococcus aureus—the most common cause of osteomyelitis. Local delivery of high doses of antibiotics via traditional bone cement can reduce systemic side effects of an antibiotic. Nonetheless, growing concerns over burst release (then subtherapeutic dose) of antibiotics, along with microbial colonization of the nondegradable cement biomaterial, further exacerbate antibiotic resistance and highlight the need to engineer alternative antimicrobial therapeutics and local delivery vehicles with increased efficacy against, in particular, biofilm-forming, antibiotic-resistant bacteria. Furthermore, limited guidance exists regarding both standardized formulation protocols and validated assays to predict efficacy of a therapeutic against multiple strains of bacteria. Ideally, antimicrobial strategies would be highly specific while exhibiting a broad spectrum of bactericidal activity. With a focus on S. aureus infection, this review addresses the efficacy of novel therapeutics and local delivery vehicles, as alternatives to the traditional antibiotic regimens. The aim of this review is to discuss these components with regards to long bone osteomyelitis and to encourage positive directions for future research efforts. 相似文献
106.
Low myocardial glucose uptake in Turner syndrome is unaffected by growth hormone: a randomized,placebo‐controlled FDG‐PET study
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)
107.
108.
T. Kapellen A. Galler K. Claus S. Heger D. Härtig Prof. Dr. W. Kiess 《Der Diabetologe》2006,2(2):167-181
Type 1 diabetes is one of the commonest chronic disorders encountered in children and adolescents. When it first becomes apparent in children, approximately 20% of them have clinical and biochemical signs of ketoacidosis (DKA). In the presence of unusual clinical symptoms it is necessary to consider the possibility of associated conditions, such as coeliac disease, immunothyroiditis and Addison’s disease. Children with diabetes must be treated by a multidisciplinary team made up of paediatrician, paediatric diabetes specialist, psychologist, social worker, ophthalmologist, dietitian, nurse and diabetes counsellor, making it essential for them to be treated in regional specialised centres. They are treated in their own psychosocial environment and their families are involved in the therapy. Comprehensive, multidisciplinary treatment strategies have now made it possible for these patients to enjoy normal physical wellbeing and near-normal psychosocial development. Prevention and early treatment of of disturbances associated with diabetes remain an important concern. The fact that type 2 diabetes must now be looked for in overweight children and adolescents is a new aspect of diabetes medicine. 相似文献
109.
According to the current nutritional recommendations issued by professional diabetes and nutrition associations, diabetic patients should keep to a diet consisting of 45–60% carbohydrates, 10–20% protein, and not more than 35% fat. However, not all of these nutritional recommendations are evidence based. For example, current studies show that the intake of insoluble roughage may be underrepresented. It is also possible that diabetic patients could benefit from keeping to the lower end of the recommended range for carbohydrates (45%) and the upper end of the range advised for protein (20%). 相似文献
110.
It is often difficult for medical professionals to understand the behaviour of people with diabetic foot syndrome. We describe the different psychological factors that play a role in the maintenance of intermittent implementation of medical recommendations. In particular we look at the consequences of neuropathy and of the recommendation to offload pressure, as well as the contradictions between the realities of the patient and the medical professionals involved in their care. We show that the solutions that patients develop are based on normal psychological processes and we encourage professionals to consider these aspects in their relationship to people with DFS and when developing individualised preventative measures. 相似文献