全文获取类型
收费全文 | 609篇 |
免费 | 37篇 |
国内免费 | 14篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 32篇 |
妇产科学 | 18篇 |
基础医学 | 58篇 |
口腔科学 | 10篇 |
临床医学 | 38篇 |
内科学 | 87篇 |
皮肤病学 | 19篇 |
神经病学 | 11篇 |
特种医学 | 138篇 |
外科学 | 80篇 |
综合类 | 20篇 |
预防医学 | 61篇 |
眼科学 | 6篇 |
药学 | 39篇 |
中国医学 | 7篇 |
肿瘤学 | 35篇 |
出版年
2022年 | 5篇 |
2021年 | 7篇 |
2019年 | 5篇 |
2018年 | 12篇 |
2016年 | 7篇 |
2015年 | 15篇 |
2014年 | 15篇 |
2013年 | 17篇 |
2012年 | 11篇 |
2011年 | 22篇 |
2010年 | 24篇 |
2009年 | 34篇 |
2008年 | 17篇 |
2007年 | 30篇 |
2006年 | 20篇 |
2005年 | 24篇 |
2004年 | 22篇 |
2003年 | 16篇 |
2002年 | 13篇 |
2001年 | 18篇 |
2000年 | 10篇 |
1999年 | 3篇 |
1998年 | 22篇 |
1997年 | 36篇 |
1996年 | 22篇 |
1995年 | 24篇 |
1994年 | 17篇 |
1993年 | 11篇 |
1992年 | 5篇 |
1991年 | 3篇 |
1990年 | 9篇 |
1989年 | 14篇 |
1988年 | 11篇 |
1987年 | 16篇 |
1986年 | 9篇 |
1985年 | 10篇 |
1984年 | 5篇 |
1983年 | 11篇 |
1982年 | 11篇 |
1981年 | 10篇 |
1980年 | 12篇 |
1979年 | 3篇 |
1978年 | 7篇 |
1977年 | 9篇 |
1976年 | 9篇 |
1975年 | 5篇 |
1974年 | 3篇 |
1968年 | 5篇 |
1967年 | 2篇 |
1966年 | 2篇 |
排序方式: 共有660条查询结果,搜索用时 15 毫秒
1.
2.
AG Nettetal 《MedR Medizinrecht》2007,25(11):664-666
Abstrakt 1. Nimmt ein Patient einen ihm von seinem (Zahn-)Arzt einger?umten Exklusiv-Termin nicht wahr, obwohl er auf dessen Eigenschaft
ausdrücklich hingewiesen wurde, so hat er dem (Zahn-)Arzt den Behandlungsausfall abzüglich eines angemessenen Eigenanteils
des (Zahn-)Arztes zu ersetzen.
2. Die Ersatzpflicht tritt auch dann ein, wenn der Patient den Termin nicht in der in dem Behandlungsvertrag vorgesehenen
Frist absagt. Eine hierfür seitens des (Zahn-)Arztes bestimmte Frist von zwei Tagen vor Behandlungsbeginn stellt sich für
den Patienten grunds?tzlich auch nicht als unangemessene Benachteiligung i.S. des § 307 BGB dar.
3. Ein Anspruch des Arztes entf?llt auch bei nur mündlicher Vereinbarung nicht unter dem Gesichtspunkt des § 4 Abs. 5b BMV-Z,
denn diese Vorschrift ist teleologisch dahin zu reduzieren, dass nur zahn?rztliche Honoraransprüche aus erfolgten Behandlungen
schriftlich vereinbart werden müssen. Soweit es jedoch um einen vertraglichen Anspruch wegen einer Leistungsst?rung geht,
vermag das Schriftformerfordernis des § 4 Abs. 5b BMV-Z grunds?tzlich nicht einzugreifen. (Leits?tze des Bearbeiters) 相似文献
3.
Early during rat thymus ontogeny, an important proportion of thymocytes
expresses IL-2R and contains IL-2 mRNA. To investigate the role of the
IL-2-IL-2R complex in rat T cell maturation, we supplied either recombinant
rat IL-2 or blocking anti-CD25 mAb to rat fetal thymus organ cultures
(FTOC) under several experimental conditions. The IL-2 treatment initially
stimulated the growth of thymocytes and, as a result, induced T cell
differentiation, but the continuous addition of IL-2 to rat FTOC, as well
as the anti-CD25 administration, resulted in cell number decrease and
inhibition of thymocyte maturation. These results indicate that immature
rat thymocytes bear functional high- affinity IL-2R and that IL-2 promotes
T cell differentiation as a consequence of its capacity to stimulate cell
proliferation. Modifications in TCR alpha beta repertoire and increased
numbers of NKR- P1+ cells, largely NK cells, were also observed in
IL-2-treated FTOC. Furthermore, IL-2-responsiveness of different thymocyte
subsets changed throughout thymic ontogeny. Immature CD4-CD8-cells
responded to IL-2 in two stages, early in thymus development and around
birth, in correlation with the maturation of two distinct waves of thymic
cell progenitors. Mature CD8+ thymocytes maximally responded to IL-2 around
birth, supporting a role for IL-2 in the increased proliferation of mature
thymocytes observed in vivo in the perinatal period. Taken together, these
findings support a role for IL-2 in rat T cell development.
相似文献
4.
"Declive" latero-terminal and latero-lateral hepaticocholedocho-jejunoanastomosis with a loop of the small intestine isolated by the Roux method was carried out in 6 patients (5 females and 1 male) according to absolute indications. In this type of anastomosis, the longitudinal incision in the hepaticocholedochus is made not on the midline but latero-dorsally on its right supraduodenal circumference. The anastomosis is formed by means of a modified suture or a suture commonly used for bilio-digestive anastomoses; the needle is inserted through the wall of the bile duct 2-2.5 mm from the border of its opening and the sutures are placed at a similar distance from one another, the seromusculo-submucous sutures are applied 6-7 mm from the edge of the opening and at a distance of 3-3.5 mm from one another. Comparison with patients in whom heapticocholedochojejunoanastomosis was established by the routine method showed the results to be better in the modified method. 相似文献
5.
Life expectancy in British Marfan syndrome populations 总被引:2,自引:0,他引:2
JR Gray AB Bridges RR West L. McLeish AG Stuart JCS Dean MEM Porteous M. Boxer SJ Davies 《Clinical genetics》1998,54(2):124-128
A total of 206 patients with Marfan syndrome were ascertained throughout genetic clinics in Wales and Scotland during the period 1970–1990. There were 45 deaths representing 22% of the cohort. Mean age at death was 45.3 ± 16.5 years. 50% median cumulative survival in the total cohort (n = 206) was 53 years for males and 72 years for females. Multivariate analysis confirmed severity as the best independent indicator of survival. These findings and survival curves will assist in the counselling of British families and individuals with Marfan syndrome. 相似文献
6.
7.
Plasma cholesterol and triacylglycerols were measured in rats with modelled chronic two-stage (mild and moderate) intermittent nitrite methemoglobinemia for 15 and 30 days. It was found that at the moment of methemoglobinemic peak (60 +/- 10 min) the experimental animals had mixed (hemtoxic, anemic and hypoxic) hypoxemia. The every day "pulse" decrease of the total oxygen concentration during the 30-day methemoglobinemia was accompanied with a significant rise (p < 0.05) of cholesterol concentrations in the high-density lipoproteins and the total cholesterol, as well as a decrease in the amount of triacylglycerols. These changes are considered to represent the side effects of adaptation for whose elucidation further research is needed. 相似文献
8.
Cardiotocography (CTG) is an up-to-date practical method for fetal surveillance during pregnancy and labor. More precise reading of the CTG data is possible with the use of some fetal acid-base parameters, taken from the umbilical artery (UA). Unfortunately, invasive procedures like fetal scalp blood sampling and/or cordocentesis are required to obtain these results. Latest computer technology enables us to create mathematical algorithms that uninvasively calculate prognostic values for fetal blood pH, based on interpretation of key CTG features. The method is called "Quantitative cardiotocography" and is implemented in a software solution for fetal surveillance in 2007. In this study the authors present their first clinical results using the method, which they recently introduced for the first time in Bulgaria. A total of 1356 CTG recordings with pH prediction were stored and analysed. These findings have been carefully taken into consideration in the context of some clinical conditions like preeclampsia, pre- and post-term delivery placental abruption, etc. Early results are showing fairly good correlation between computer-analysed abnormal CTG findings and presence of the above mentioned clinical conditions. Conclusions: Quantitative appraisal of CTG findings and acid-base parameters leads to much more precise interpretation of the CTG phenomena, which guarantees higher quality of fetal surveillance during pregnancy and labor. 相似文献
9.
Zielinsky A; Hirsh J; Straumanis G; Carter CJ; Gent M; Sackett DL; Hull R; Kelton JG; Powers P; Turpie AG 《Blood》1982,59(2):346-350
We have evaluated the fibrinogen/fibrin fragment E antigen assay as a diagnostic test in patients with clinically suspected venous thrombosis by comparing the results of this assay with venography in 272 patients. The result of the fragment E antigen assay was elevated in 79 of 80 patients with positive venograms for recent venous thrombosis (sensitivity 99%) and within the normal range in 161 of 192 patients with normal venograms (specificity 84%). The fragment E assay was also evaluated in 130 medical and surgical controls without evidence of venous thrombosis by leg scanning and the test was found to be relatively nonspecific. However, in the patient group under study, a correct clinical diagnosis of no thrombosis, based on a normal fragment E result, was made in 161 of 162 cases (negative predictive value of 99%). Therefore, a normal test result effectively excludes a diagnosis of venous thrombosis in clinically symptomatic patients. The assay, as currently performed, is technically demanding and takes 24 hr to complete. Therefore, it will have to be simplified before it can be applied to clinical practice. 相似文献
10.