全文获取类型
收费全文 | 13303篇 |
免费 | 2776篇 |
国内免费 | 143篇 |
专业分类
耳鼻咽喉 | 388篇 |
儿科学 | 347篇 |
妇产科学 | 445篇 |
基础医学 | 876篇 |
口腔科学 | 313篇 |
临床医学 | 3213篇 |
内科学 | 2761篇 |
皮肤病学 | 373篇 |
神经病学 | 1128篇 |
特种医学 | 552篇 |
外科学 | 1681篇 |
综合类 | 411篇 |
现状与发展 | 2篇 |
一般理论 | 2篇 |
预防医学 | 2014篇 |
眼科学 | 156篇 |
药学 | 396篇 |
1篇 | |
中国医学 | 106篇 |
肿瘤学 | 1057篇 |
出版年
2024年 | 81篇 |
2023年 | 428篇 |
2022年 | 153篇 |
2021年 | 330篇 |
2020年 | 540篇 |
2019年 | 237篇 |
2018年 | 658篇 |
2017年 | 665篇 |
2016年 | 691篇 |
2015年 | 786篇 |
2014年 | 843篇 |
2013年 | 1196篇 |
2012年 | 629篇 |
2011年 | 561篇 |
2010年 | 655篇 |
2009年 | 717篇 |
2008年 | 496篇 |
2007年 | 466篇 |
2006年 | 495篇 |
2005年 | 410篇 |
2004年 | 338篇 |
2003年 | 288篇 |
2002年 | 255篇 |
2001年 | 278篇 |
2000年 | 189篇 |
1999年 | 206篇 |
1998年 | 315篇 |
1997年 | 327篇 |
1996年 | 353篇 |
1995年 | 275篇 |
1994年 | 198篇 |
1993年 | 143篇 |
1992年 | 149篇 |
1991年 | 137篇 |
1990年 | 134篇 |
1989年 | 161篇 |
1988年 | 127篇 |
1987年 | 103篇 |
1986年 | 100篇 |
1985年 | 95篇 |
1984年 | 79篇 |
1983年 | 67篇 |
1982年 | 57篇 |
1981年 | 72篇 |
1980年 | 47篇 |
1979年 | 50篇 |
1978年 | 43篇 |
1977年 | 36篇 |
1976年 | 31篇 |
1973年 | 38篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Ana Sánchez-Romero Israel Oliver David Costa Albina Orduña Javier Lacueva Francisco Pérez-Vicente Antonio Arroyo Rafael Calpena 《Clinical & translational oncology》2006,8(4):294-295
Lung cancer is the most prevalent malignancy in western countries and most of the patients present at advanced stages, but
single splenic metastasis is exceptional instead. We report on a case of a seventy-three-year old male presenting with non-hemoptoic
productive cough, constitutional syndrome and pain in the left lower quadrant. Physical examination and complementary radiological
and hystologycal procedures revealed the presence of an adenocarcinoma of the left lung with probable splenic metastasis.
The patient underwent splenectomy, which confirmed the diagnose of splenic metastasis of lung adenocarcinoma and, secondly,
lung resection was performed. Topics about lung cancer metastasis are discussed. 相似文献
42.
John McMahon RMN BA Scottish Home Health Department Nursing Research Fellow Staff Nurse Barry T Jones BSc PhD Senior Lecturer 《Journal of advanced nursing》1992,17(2):173-186
Despite being constantly cited as a critical intervening variable in the recovery from alcohol problems, there is a paucity of literature on client motivation. This paper reviews the current literature which impacts on motivation and its importance in treatment and develops in a stepwise manner the revised expectancy/motivation hypothesis, tentatively explaining both motivation and denial as a natural process in behavioural change. Because of the revised expectancy/motivation hypothesis' distinctly defined stages which closely relate to the process of nursing and the qualitative and quantitative measurement it entails which the nursing process demands, it offers a particularly appropriate model for treatment within nurse practice. 相似文献
43.
44.
45.
NANCY JEANNE CONLEY BA BSN ELLEN OLSHANSKY RNC DNSc 《Journal of obstetric, gynecologic, and neonatal nursing : JOGNN / NAACOG》1987,16(5):321-328
Approximately 11,550 women with epilepsy give birth annually, yet maternity nurses receive little information on how to care for these patients. Children of epileptic mothers are born with an increased incidence of birth defects, and have a higher perinatal mortality rate. Complications such as bleeding during pregnancy, and interventions such as cesarean births and labor inductions are more common among epileptic women, and seizures tend to increase during pregnancy in more than one-third of epileptic women. Informed nursing care is essential to ensure the best possible outcome of these pregnancies. 相似文献
46.
47.
48.
49.
KAREN ROETMAN MD LEILA WELBORN MD RAAFAT HANNALLAH MD ROBERT FINK MD JANET NORDEN MSN & REGINA O'DONNELL BA 《Paediatric anaesthesia》1997,7(5):391-397
This study compared recovery characteristics and postoperative ventilatory function when halothane, fentanyl or combination of halothane and fentanyl in addition to N2O were used for intraoperative anaesthesia in term infants undergoing hernia repair as outpatients. Sixty-six full term ASA PS I infants ages 1–12 months were studied. All received inhalation induction with N2O, O2 and halothane, followed by intravenous atropine and atracurium, tracheal intubation, and controlled ventilation. For anaesthesia maintenance, patients were randomized into one of three groups. Group I received 70% N2O, 30% O2 and halothane. Group II received 70% N2O, 30% O2, halothane and 2 μg·kg?1 fentanyl. Group III received 70% N2O, 30% O2 and 10 μg·kg?1 fentanyl. Awakening times were similar in all three groups, however, Group I patients had significantly shorter recovery and discharge times than those of Group II and III. None of the patients experienced postoperative apnoea or periodic breathing. One patient in Group III experienced two brief episodes of bradycardia not associated with apnoea or arterial desaturation (Spo 2 >90% for greater than 30 s). Decreased Spo 2 occurred less frequently in Group I (5.9%) compared to Group II (22.7%) and Group III (19.0%) patients, however, the group differences were not significant. Transcutaneous CO2 (TcCO2) values were not statistically different among the three groups. Pain scores were initially lower in Groups II and III, but at 120 min the differences were not significant. Postoperative apnoea was not observed in this study. Spo 2 <90% and TcCO2 >9 kPa (70 mmHg) was more common in infants receiving 2 and 10 μg·kg?1 fentanyl than in infants receiving halothane and nitrous oxide anaesthesia. Infants <3 months old did not have a higher incidence of Spo 2 <90% or significantly higher TcCO2 values when compared to infants >3 months old. Fentanyl in doses used in this study did not prolong awakening time but did prolong recovery and discharge times in outpatient infants. 相似文献
50.