全文获取类型
收费全文 | 1197篇 |
免费 | 66篇 |
国内免费 | 22篇 |
专业分类
耳鼻咽喉 | 5篇 |
儿科学 | 61篇 |
妇产科学 | 22篇 |
基础医学 | 89篇 |
口腔科学 | 33篇 |
临床医学 | 175篇 |
内科学 | 270篇 |
皮肤病学 | 6篇 |
神经病学 | 37篇 |
特种医学 | 166篇 |
外科学 | 125篇 |
综合类 | 77篇 |
一般理论 | 8篇 |
预防医学 | 68篇 |
眼科学 | 16篇 |
药学 | 78篇 |
肿瘤学 | 49篇 |
出版年
2021年 | 10篇 |
2016年 | 10篇 |
2014年 | 16篇 |
2013年 | 26篇 |
2012年 | 10篇 |
2011年 | 19篇 |
2010年 | 26篇 |
2009年 | 51篇 |
2008年 | 16篇 |
2007年 | 16篇 |
2006年 | 9篇 |
2005年 | 14篇 |
2003年 | 10篇 |
2002年 | 14篇 |
2001年 | 12篇 |
2000年 | 15篇 |
1999年 | 20篇 |
1998年 | 45篇 |
1997年 | 47篇 |
1996年 | 43篇 |
1995年 | 46篇 |
1994年 | 28篇 |
1993年 | 35篇 |
1992年 | 15篇 |
1991年 | 14篇 |
1990年 | 13篇 |
1989年 | 35篇 |
1988年 | 40篇 |
1987年 | 30篇 |
1986年 | 22篇 |
1985年 | 28篇 |
1984年 | 24篇 |
1983年 | 22篇 |
1982年 | 31篇 |
1981年 | 24篇 |
1980年 | 23篇 |
1978年 | 15篇 |
1977年 | 17篇 |
1976年 | 10篇 |
1965年 | 7篇 |
1964年 | 16篇 |
1963年 | 14篇 |
1959年 | 22篇 |
1958年 | 40篇 |
1957年 | 44篇 |
1956年 | 29篇 |
1955年 | 28篇 |
1954年 | 45篇 |
1949年 | 26篇 |
1948年 | 26篇 |
排序方式: 共有1285条查询结果,搜索用时 0 毫秒
71.
72.
John C. Hannon DC Certified Feldenkrais Practitioner 《Journal of bodywork and movement therapies》2000,4(4)
In the last article in this series, we briefly examined the Principle of Least Effort and the five forms of strain. Strain, you may recall, in physics, describes a change in the volume of a material when a force is applied. Our treatments are a blend of rotation and translation movements of our hands with a changing mix of strains being applied onto the client's tissues. Harnessing and interweaving the various forms of strain with dexterity may aid us in improving our treatment efficacy.In this tissue, we will consider the importance of anchorage and stability in treatment, We will consider a set of ‘House Rules' for improving treatment. In addition, we will explore Bernstein's concept of degrees of freedom. 相似文献
73.
74.
75.
76.
ROBERTSON E. N.; FRAGEN R. J.; BOOIJ L. H. D. J.; EGMOND J. VAN; CRUL J. F. 《British journal of anaesthesia》1983,55(8):723-728
The effects of a bolus injection of diisopropyl phenol 2 mgkg1 i.v. and an infusion (150 µg kg1 min1for 30 min and 75 µg kg1 minl thereafter)on the pharmacodynamics and dose-response curves of atracuriumand vecuronium were studied in 52 healthy (ASA I or II) patients.Under anaesthesia with diisopropyl phenol, the cumulative dose-responsecurves of both myoneural blocking drugs were shifted to theleft when compared with previously reported results. However,there was no clinically significant change in the pharmacodynamicsof either drug after the bolus injection of the blocking drug.Diisopropyl phenol 2 mg kg1 i.v. administered duringsteady-state infusions of vecuronium and atracurium increasedthe depth of the constant neuromuscular blockade. When diisopropylphenol alone was given to four patients there was no changein the twitch height. These results show that diisopropyl phenol,given according to the regimen in this study, potentiates bothof the neuromuscular blockers studied but does not prolong theduration of action of either drug. During the infusion of diisopropylphenol, vecuronium was found to be five times more potent, tohave a more rapid onset time, and to be shorter acting thanan equipotent dose of atracurium.
*Present address: Department of Anaesthesia, Royal Infirmary,Glasgow 相似文献
77.
JMG Crane T Delaney KD Butt KA Bennett D Hutchens DC Young 《The journal of maternal-fetal & neonatal medicine》2013,26(5):319-323
Objective: To identify independent predictors of successful labor induction with oral or vaginal misoprostol.Methods: Women enrolled in four previous randomized trials involving oral or vaginal misoprostol for cervical ripening and labor induction were included in the present cohort study, with dosing of 25–50?μg every 4 to 6?h vaginally (n?=?574) or 50?μg every 4?h orally (n?=?207). Multiple logistic regression was performed to identify factors independently associated with successful labor induction – defined as vaginal delivery within 12?h, vaginal delivery within 24?h and spontaneous vaginal delivery. Predictors of Cesarean birth and the need for only one dose of misoprostol were also identified. Variables included in the models were maternal age, weight, height, parity, gravidity, membrane status, route of misoprostol, gestational age, birth weight, and Bishop score and its individual components.Results: Maternal age, height, weight, parity, birth weight, dilatation, effacement and cervical station were associated with vaginal delivery within 24?h of induction. Maternal age, height, weight, nulliparity, birth weight and route of misoprostol were associated with Cesarean birth, with oral misoprostol being associated with a lower rate of Cesarean birth. The need for only one dose of misoprostol was predicted by maternal height, weight, parity, gestational age, Bishop score and route of misoprostol.Conclusion: Characteristics of the woman (height, weight, parity), the fetus (birth weight) and some of the individual components of the Bishop score, were associated with successful labor induction, with oral misoprostol being associated with a lower rate of Cesarean birth. 相似文献
78.
大肠癌免疫组化表达与临床病理的关系 总被引:1,自引:0,他引:1
目的:探讨大肠癌CEA、P53、nm23、Ki-67、MRP免疫组化表达特点和相互关系,及其与临床病理的关系.方法:回顾性分析2003-01/2006-07我院收治的73例大肠癌患者的临床病理及随访资料,并对其石蜡标本采用免疫组化SP染色法检测CEA、P53、nm23、Ki-67、MRP,分析其免疫组化特点及其与临床病理之间的关系.结果:CEA、P53、nm23、Ki-67、MRP在大肠癌中的阳性表达率依次为82.2%、68.5%、75.3%、84.9%和64.4%.CEA、MRP与大肠癌患者的各因素无统计学差异.P53、Ki-67和nm23与肿瘤的Dukes分期和淋巴结转移有关, P53、Ki-67在Dukes C、D期的阳性表达率(依次为82.8%和100%1明显高于Dukes A、B期者(59.1%和75.0%)(P<0.05),而nm23在Dukes C、D期的阳性表达率(58.6%)明显低于Dukes A、B期者(86.4%)(P<0.05).CEA与nm23的表达呈明显的负相关(r=-0.296,P=0.011),而P53和Ki-67表达之间呈现明显的正相关(r= 0.308,P=0.008),其他各指标间的表达无相关性.nm23、P53和Ki-67与预后因素关系明显,nm23在生存期≥3 a患者的阳性表达率(92.9%)高于生存期<3 a者(71.2%)(P<0.05),而P53和Ki-67在生存期≥3 a患者的阳性表达率(依次为42.9%和64.3%)明显低于生存期<3 a者(74.6%和89.8%)(P<0.05).结论:P53、Ki-67和nm23的表达与大肠癌的侵袭转移和预后密切相关.CEA可能是大肠癌的侵袭转移的促进因素.MRP所引起的耐药机制是一个相对独立的机制.CEA、P53、nm23、Ki-67可作为判断大肠癌恶性程度、侵袭转移以及预后的指标. 相似文献
79.
R. HOWMAN C. BARNES J. CURTIN J. PRICE J. ROBERTSON S. RUSSELL M. SELDON R. SUPPIAH L. TEAGUE G. BARRESE 《Haemophilia》2011,17(3):463-469
Summary. Factor replacement with BIOSTATE®, a factor VIII (FVIII)/von Willebrand factor concentrate, forms the mainstay of treatment for children with von Willebrand disorder (VWD) in Australia and New Zealand. However, published data on the clinical efficacy and safety of BIOSTATE in the VWD paediatric population are limited. We retrospectively assessed the efficacy and safety of BIOSTATE in 43 children with VWD who received treatment for surgery, non‐surgical bleeds or continuous prophylaxis at eight paediatric haemophilia centres in Australia and New Zealand. Data were collected on patient demographics, disease history, treatment history, dosage, administration, adverse reactions, concomitant medications and excessive bleeding events. BIOSTATE provided excellent/good haemostatic efficacy in 90% of surgical procedures (n = 42) with a mean daily FVIII dose of 47 IU FVIII:C kg?1 and a median treatment duration of 3 days. Excellent/good haemostatic efficacy was achieved in 94% of non‐surgical bleeding events (n = 72) with a mean FVIII dose of 45 IU FVIII:C kg?1 day?1 and a median treatment duration of 1 day. There were no bleeding events attributable to lack of efficacy. One case of nausea, possibly related to BIOSTATE administration, was reported. These results suggest that BIOSTATE is safe and effective for the treatment and prophylaxis of bleeding in children with VWD. 相似文献
80.
Thorough evaluation of patients with shoulder problems should classify patients into discreet diagnostic groups—red flags, impingement syndrome, adhesive capsulitis, shoulder instability. Most rotator cuff tendonitis patients fall into the impingement category. The most important aspect of the initial evaluation is to rule out red flags suggestive of tumor, infection or fracture. If present such patients always require additional testing and often referral.A patient will be classified into the impingement category if there is (a) pain with active shoulder motions (i.e., painful arc), (b) pain with overpressure of passive shoulder elevation (i.e., a positive Neer's test) or horizontal shoulder adduction/internal rotation (Hawkins test), and (c) painfully weak resisted shoulder motions. Impingement syndrome patients should also be evaluated for partial or full-thickness rotator cuff tears, especially if the response to 4–6 weeks of rehabilitation is unsatisfactory.Patients with adhesive capsulitis have severe ROM loss. The most restricted ROMs are with shoulder abduction, external rotation, and flexion. In contrast, patients with shoulder instability are hypermobile. A history of recurrent dislocations is often present. An apprehension sign may be present. SLAP II-IV lesions are common in this patient group and the labrum can be seen to be stretched anterior during many of the functional tests. 相似文献