全文获取类型
收费全文 | 9030篇 |
免费 | 14篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 266篇 |
儿科学 | 49篇 |
妇产科学 | 137篇 |
基础医学 | 1106篇 |
口腔科学 | 278篇 |
临床医学 | 1702篇 |
内科学 | 943篇 |
皮肤病学 | 17篇 |
神经病学 | 104篇 |
特种医学 | 418篇 |
外科学 | 2086篇 |
综合类 | 8篇 |
预防医学 | 714篇 |
眼科学 | 172篇 |
药学 | 336篇 |
肿瘤学 | 709篇 |
出版年
2018年 | 4篇 |
2017年 | 6篇 |
2014年 | 3篇 |
2013年 | 10篇 |
2012年 | 317篇 |
2011年 | 664篇 |
2010年 | 316篇 |
2009年 | 6篇 |
2008年 | 472篇 |
2007年 | 670篇 |
2006年 | 688篇 |
2005年 | 679篇 |
2004年 | 800篇 |
2003年 | 798篇 |
2002年 | 861篇 |
2001年 | 543篇 |
2000年 | 730篇 |
1999年 | 385篇 |
1998年 | 111篇 |
1997年 | 7篇 |
1995年 | 3篇 |
1993年 | 29篇 |
1992年 | 40篇 |
1991年 | 56篇 |
1990年 | 69篇 |
1989年 | 53篇 |
1988年 | 53篇 |
1987年 | 68篇 |
1986年 | 60篇 |
1985年 | 47篇 |
1984年 | 41篇 |
1983年 | 27篇 |
1982年 | 10篇 |
1981年 | 10篇 |
1980年 | 7篇 |
1979年 | 40篇 |
1978年 | 21篇 |
1977年 | 9篇 |
1976年 | 16篇 |
1975年 | 35篇 |
1974年 | 36篇 |
1973年 | 25篇 |
1972年 | 33篇 |
1971年 | 38篇 |
1970年 | 34篇 |
1969年 | 26篇 |
1968年 | 21篇 |
1967年 | 20篇 |
1966年 | 20篇 |
1965年 | 10篇 |
排序方式: 共有9045条查询结果,搜索用时 15 毫秒
1.
2.
3.
A A Korzh N I Kulish V A Tan'kut V T Mikha?liv 《Ortopediia travmatologiia i protezirovanie》1990,(10):1-7
On the basis of analysis of surgical treatment of 753 patients with coxarthrosis during 1970-1987, the authors set forth the stages of arthroplasty development in the USSR, using the experience of the Kharkov research institute of orthopaedics and traumatology named after M. I. Sitenko on the problems of arthrodesis operations, endoprosthetics and biological arthroplasty. In the article are presented the peculiar features of diagnostic and surgical tactics in case of patients with idiopathic and dysplastic coxarthrosis; operation technique for each form is presented in details. The authors have developed a new perosseous access to the hip joint, which made a good showing and permits to preserve the integrity of periarticular muscles and neurovascular formations. Application of the given access made possible the extension of indications for arthroplasty in case of grave forms of coxarthrosis, met earlier in a reserved manner. 相似文献
4.
5.
A V Gribkov A P Fraerman V I Salalykin A A Salmin V G Sidorkin E M Mikha?lova 《Anesteziologiia i reanimatologiia》1992,(1):28-31
Water-electrolyte homeostasis and its basic regulatory hormones have been studied in 36 patients with neurosurgical brain pathology during surgical interventions performed under balanced anesthesia (sodium hydroxybutyrate combined with NLA drugs). The study has revealed 3 types of reactions in hormones regulating water-electrolyte homeostasis: type I--a decrease in vasopressin (VP) concentration and renin-angiotensin-aldosterone system (RAAS) activity; type II--VP increase and RAAS activation; type III--an increase in VP content and RAAS disbalance. It has been shown that type I reaction is accompanied by marked osmotic disturbances. The impact of sodium hydroxybutyrate on RAAS is manifested in aldosterone secretion suppression. 相似文献
6.
The modulation of drug metabolising enzymes by Masheri extract (ME) and Benzo(a)Pyrene [B(a)P] was studied in male Sprague Dawley rats fed different dietary protein levels. Two groups of 21 days old male Sprague Dawley rats were put on a high protein diet (SHP) with 20% Casein, and a low protein diet (SLP) with 3% Casein semisynthetic based diets for 12 weeks. The SLP fed animals showed lower basal levels of the Phase I activating enzymes viz. Cytochrome P450, Benzo(a)Pyrene hydroxylase, Benzphetamine demethylase and Phase II glutathione detoxification system viz. Glutathione (GSH) and Glutathione-S-transferase. ME and B(a)P treatment significantly depleted the glutathione detoxification system in the SLP group whereas an opposite effect was observed in the SHP group. Interstingly, ME and B(a)P treated rats in the SLP group showed a higher percent increase in the hepatic and pulmonary Phase I enzyme activities than those observed in the treated ME/B(a)P treated SHP rats. Furthermore, both ME and B(a)P significantly decreased the hepatic pool of vitamin A while a concomittant increase in that of vitamin C was observed. 相似文献
7.
Water receptivity test after McClure-Aldrich was used to assess edema of the mammary gland affected by edematous-infiltrative carcinoma. Fifty-five patients with said pathology as well as 20 nodular carcinoma and 22 mastopathy patients in control were examined. Patients failing to respond to a combination of polychemo- hormono-therapy and irradiation showed the following pattern of test parameters: initial time of resolution of a blister produced by intradermal physiologic salt solution injection ranged 3-10 minutes. After treatment, it increased by less than 5 minutes or even decreased. An 81.8 +/- 8.2% remission rate was seen in patients in whom the said indexes were 11-50 minutes and a less than 5 minute increase, respectively. High predictive value of the test was confirmed mathematically. 相似文献
8.
9.
10.
Consideration is given to the technique and the device for detecting water amount linked to high-molecular compounds presenting the base for blood substitutes. The device is simple in use, outputs reproducible data comparable to the well known results (e.g. for polyglucine). It should be recommended for evaluating hemodynamic parameters of newly developed blood substitutes. 相似文献