全文获取类型
收费全文 | 472篇 |
免费 | 24篇 |
国内免费 | 1篇 |
专业分类
儿科学 | 6篇 |
妇产科学 | 6篇 |
基础医学 | 56篇 |
口腔科学 | 38篇 |
临床医学 | 42篇 |
内科学 | 95篇 |
皮肤病学 | 7篇 |
神经病学 | 33篇 |
特种医学 | 30篇 |
外科学 | 66篇 |
综合类 | 6篇 |
一般理论 | 1篇 |
预防医学 | 48篇 |
眼科学 | 21篇 |
药学 | 24篇 |
肿瘤学 | 18篇 |
出版年
2023年 | 4篇 |
2022年 | 6篇 |
2021年 | 14篇 |
2020年 | 15篇 |
2019年 | 12篇 |
2018年 | 15篇 |
2017年 | 14篇 |
2016年 | 7篇 |
2015年 | 8篇 |
2014年 | 16篇 |
2013年 | 15篇 |
2012年 | 24篇 |
2011年 | 28篇 |
2010年 | 8篇 |
2009年 | 16篇 |
2008年 | 18篇 |
2007年 | 21篇 |
2006年 | 16篇 |
2005年 | 11篇 |
2004年 | 20篇 |
2003年 | 10篇 |
2002年 | 17篇 |
2001年 | 14篇 |
2000年 | 9篇 |
1999年 | 8篇 |
1998年 | 3篇 |
1997年 | 7篇 |
1996年 | 3篇 |
1994年 | 5篇 |
1992年 | 14篇 |
1991年 | 7篇 |
1990年 | 8篇 |
1989年 | 10篇 |
1988年 | 6篇 |
1987年 | 11篇 |
1986年 | 10篇 |
1985年 | 6篇 |
1984年 | 9篇 |
1983年 | 5篇 |
1982年 | 4篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1978年 | 7篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 3篇 |
1971年 | 2篇 |
1969年 | 4篇 |
排序方式: 共有497条查询结果,搜索用时 15 毫秒
1.
In January 1991, the Government coalition parties agreed that the existing rehabilitation and severely disabled persons legislation should be rearranged in a distinct manner and integrated in the German Social Code as Book IX--Integration of disabled persons. This forthcoming codification moreover is intended as an opportunity for introducing appropriate adjustments and amendments, as well as for considering the possibilities for limited material reform. The Federal Rehabilitation Council has submitted a number of proposals to the Federal government aimed at settling various intersectoral aspects of rehabilitation legislation in the forthcoming Book IX. 相似文献
2.
3.
Masahiro Oike Gero Schwarz Jan Sehrer Matthias Jost Volker Gerke Klaus Weber Guy Droogmans Bernd Nilius 《Pflügers Archiv : European journal of physiology》1994,428(5-6):569-576
Possible interactions of cytoskeletal elements with mechanically induced membrane currents and Ca2+ signals were studied in human endothelial cells by using a combined patch-clamp and Fura II technique. For mechanical stimulation, cells were exposed to hypotonic solution (HTS). The concomitant cell swelling activates a Cl– current, releases Ca2+ from intracellular stores and activates Ca2+ influx. To interfere with the cytoskeleton, cells were loaded either with the F-actin-stabilizing agent phalloidin (10 mol/l), or the F-actin-depolymerizing substance cytochalasin B (50 mol/l). These were administered either in the bath or the pipette solutions. The tubulin structure of the endothelial cells was modulated by taxol (50 mol/l), which supports polymerization of tubulin, or by the depolymerizing agent colcemid (10 mol/l) both applied to the bath. Immunofluorescence experiments show that under the chosen experimental conditions the cytoskeletal modifiers employed disintegrate the F-actin and microtubuli cytoskeleton. Neither of these cytoskeletal modifiers influenced the HTS-induced Cl– current. Ca2+ release was not affected by cytochalasin B, taxol or colcemid, but was suppressed if the cells were loaded with phalloidin. Depletion of intracellular Ca2+ stores by thapsigargin renders the intracellular [Ca2+] sensitive to the extracellular [Ca2+], which is indicative of a Ca2+ entry pathway activated by store depletion. Neither cytochalasin B nor phalloidin affected this Ca2+ entry. We conclude that F-actin turnover or depolymerization is necessary for Ca2+ release by mechanical activation. The tubulin network is not involved. The Ca2+ release-activated Ca2+ entry is not modulated by the F-actin cytoskeleton. 相似文献
4.
B H Gross K F Gerke K K Shirazi W M Whitehouse F L Bookstein 《Journal of the Canadian Association of Radiologists》1985,36(2):141-143
Patient age is an essential part of a clinical history, but it is not always provided by referring physicians. We assessed the ability of four radiologists with different levels of expertise (first-year resident to professor emeritus) to predict patient age based on postero-anterior and lateral chest radiographs from 171 patients. All four were able to predict age with a mean error of less than 15 years, but there were statistically significant differences among them. Surprisingly, observer experience did not correlate with accuracy of patient age estimation. While many factors probably operate, the estimation of patient age relies heavily on "gestalt." 相似文献
5.
Purpose. Drug free and drug loaded protein-free low density lipoprotein (LDL) models consisting mainly of phospholipids, cholesterol, cholesterol esters, and triglycerides in ratios found for physiological LDL have been prepared. Their physicochemical characteristics were compared with those of physiological LDL. Methods. Different characterization methods were used: photon correlation spectroscopy, transmission electron microscopy, X-ray solution scattering, and 1H nuclear magnetic resonance spectroscopy (NMR). Results. Particle sizes are highly dependent on the preparation method and in particular on the homogenization conditions. Electron microscopy indicates that the size distributions of model systems are much broader than those of physiological LDL. The X-ray solution scattering patterns of the model systems display a temperature dependent maximum near 3.8 nm similar to that found in the patterns of physiological LDL. NMR indicates a comparable mobility of the lipid molecules in model particles and in physiological LDL. The influence of drug loading is similar to that found earlier for physiological LDL. In particular, the incorporation of the anti-cancer drug WB 4291 seems to have a fluidizing effect on the lipids in the core region of the particles. Conclusions. The preparation method of LDL model systems is of crucial importance as only the solvent evaporation method yielded systems in the size range of physiological LDL with acceptable high lipid concentrations. The fluidizing influence of temperature and drug incorporation (WB 4291) may be a disadvantage in drug targeting. 相似文献
6.
B.A. Osuntogun S.R.A. Adewusi L. Telek O.L. Oke 《International journal of food sciences and nutrition》2013,64(1):41-46
The analysis of phytates in extrudates containing rye bran was done by a colorimetric method with the Wade reagent. The changes in profiles of myo-inositol phosphates indicate that, although no isomers with positive physiological functions (such as I(1,4,5)P3, I(1,2,3)P3 or I(1,3,4,5)P4) were formed, the beneficial impact of extrusion is the reduction of phytates, as compared to the raw material. The obtained snacks containing rye bran received acceptable to desirable sensory scores. 相似文献
7.
Zusammenfassung Bei einem jungen Mann türkischer Herkunft trat nach Genuss von sog. "pontischem" Waldhonig eine Synkope auf. Neben einer Sinusbradykardie und Hypotonieneigung bestanden gastrointestinale Symptome. Als Ursache der Synkope ist eine Intoxikation mit Grayanotoxinen anzunehmen. Unter symptomatischen Maßnahmen bildeten sich die Beschwerden innerhalb weniger Stunden vollständig zurück. Intoxikationen mit Grayanotoxinen aus "pontischem" Honig sind in unseren Breiten selten, sollten aber bei unklaren Bradykardien v. a. bei Patienten mit entsprechender Reiseanamnese in Länder der Schwarzmeerküste differenzialdiagnostisch mit in Betracht gezogen werden.
相似文献
相似文献
8.
Byrne MF Mitchell RM Gerke H Goller S Stiffler HL Golioto M Branch MS Jowell PS Baillie J 《Journal of clinical gastroenterology》2004,38(3):225-229
During upper gastrointestinal endoscopy, topical oropharyngeal anesthesia with lidocaine and/or benzocaine is used routinely by many endodscopists. Although such a practice is usually safe, there have been a number of reports of methemoglobinemia induced by topical anesthesia. Early treatment is extremely important as the development of methemoglobinemia is potentially fatal. Methemoglobinemia should be considered when oxygen desaturation occurs without another explanation. In this case series, we report 4 cases of methemoglobinemia that followed the liberal application of Cetacaine for ERCP. All patients recovered after appropriate treatment but these cases serve to highlight the potential problem, the importance of early recognition and treatment, and the most appropriate treatment options. 相似文献
9.
Adedotun Ogunbajo Temitope Oke Harry Jin William Rashidi Stella Iwuagwu Gary W. Harper 《AIDS care》2020,32(3):337-342
ABSTRACTNigerian gay, bisexual and other men who have sex with men (GBMSM) experience negative psychosocial health problems, which may increase their risk for HIV infection. Few studies have explored the syndemic effect of co-occurring psychosocial health problems on HIV sexual risk among Nigerian GBMSM. We investigated the co-occurrence of syndemic psychosocial health problems and their synergistic effect on HIV risk behaviors. We assessed depressive symptoms, post-traumatic stress disorder, alcohol dependence, tobacco use, and hard-drug use. The outcome variables were the number of male sexual partners and consistent condom use. In a multivariable model, experiencing 4 or more psychosocial health problems – compared to experience none or one psychosocial health problem – was significantly associated with increasing number of male sexual partners. We found no statistically significant association between the number of syndemic psychosocial health problems and consistent condom use. Our study findings provides evidence of a synergistic relationship between negative psychosocial health factors and HIV sexual risk behavior. These findings underscore the importance of developing HIV prevention programming aimed at reducing HIV transmission risk that incorporate substance use and mental health treatments, in order to improve the overall health and quality of life for Nigerian GBMSM. 相似文献
10.
Matthew Bui Kevin M. Ryan Isdin Oke Crandall E. Peeler Gabrielle A. Jacquet 《The Journal of emergency medicine》2021,60(4):520-523
BackgroundSuperior orbital fissure syndrome (SOFS) is a rare constellation of findings consisting of ophthalmoplegia, ptosis, a fixed dilated pupil, forehead anesthesia, and loss of the corneal reflex. This syndrome, though rare, is most often encountered in trauma with individuals sustaining a facial fracture.Case ReportWe present a case of a young woman who was diagnosed with SOFS after a fall in her house, hitting her face on a nightstand. Treatment consisted of high-dose i.v. steroids followed by a taper with close follow-up in the Ophthalmology clinic. We provide a brief review of SOFS, including treatment considerations and follow-up.Why Should an Emergency Physician Be Aware of This?SOFS can be easily overlooked in an individual presenting to the emergency department after facial trauma with proptosis. However, a thorough examination of the eye, visual acuity, and intraocular pressure will focus the physician on SOFS rather than the need for immediate decompression via lateral canthotomy. This report describes a traumatic cause of SOFS, the pathophysiology and treatment, and summarizes existing literature. 相似文献