全文获取类型
收费全文 | 325篇 |
免费 | 15篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 2篇 |
儿科学 | 1篇 |
妇产科学 | 1篇 |
基础医学 | 67篇 |
口腔科学 | 6篇 |
临床医学 | 13篇 |
内科学 | 68篇 |
皮肤病学 | 10篇 |
神经病学 | 24篇 |
特种医学 | 8篇 |
外科学 | 65篇 |
综合类 | 8篇 |
预防医学 | 7篇 |
药学 | 20篇 |
肿瘤学 | 41篇 |
出版年
2023年 | 1篇 |
2022年 | 4篇 |
2021年 | 3篇 |
2020年 | 2篇 |
2019年 | 6篇 |
2018年 | 5篇 |
2017年 | 2篇 |
2016年 | 4篇 |
2015年 | 5篇 |
2014年 | 12篇 |
2013年 | 10篇 |
2012年 | 17篇 |
2011年 | 19篇 |
2010年 | 9篇 |
2009年 | 8篇 |
2008年 | 23篇 |
2007年 | 32篇 |
2006年 | 26篇 |
2005年 | 21篇 |
2004年 | 16篇 |
2003年 | 17篇 |
2002年 | 19篇 |
2001年 | 7篇 |
2000年 | 16篇 |
1999年 | 8篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1987年 | 3篇 |
1986年 | 5篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1976年 | 1篇 |
1973年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有341条查询结果,搜索用时 0 毫秒
111.
Katlama C Esposito R Gatell JM Goffard JC Grinsztejn B Pozniak A Rockstroh J Stoehr A Vetter N Yeni P Parys W Vangeneugden T;POWER study group 《AIDS (London, England)》2007,21(4):395-402
BACKGROUND: The ongoing phase IIb POWER 1 (TMC114-C213) trial is designed to assess efficacy and safety of the protease inhibitor (PI) TMC114 (darunavir) in treatment-experienced HIV-1-infected patients. DESIGN: This randomized, partially blinded, 24-week dose-finding study compared efficacy and safety of four doses of TMC114 plus low-dose ritonavir (TMC114/r) with investigator-selected control PI(s) (CPI[s]). METHODS: Patients with one or more primary PI mutation and HIV RNA > 1000 copies/ml received optimized background therapy, plus TMC114/r 400/100 mg once daily, 800/100 mg once daily, 400/100 mg twice daily or 600/100 mg twice daily, or CPI(s). The primary endpoint (intent-to-treat) compared proportions of patients achieving viral load reduction >or= 1.0 log10 copies/ml from baseline. RESULTS: In total, 318 patients were treated. Baseline mean viral load was 4.48 log10 copies/ml; median CD4 cell count was 179 cells/microl. In the CPI arm 62% of patients discontinued (virological failure: 54%); 10% of TMC114/r patients discontinued. More TMC114/r (69-77%) than CPI patients (25%) reached the primary endpoint (P < 0.001); 43-53% of TMC114/r patients and 18% of the CPI arm achieved viral load < 50 copies/ml (P < 0.001). TMC114/r demonstrated greater mean CD4 cell count increases versus CPI(s) (68-124 versus 20 cells/microl; P < 0.05). TMC114/r 600/100 mg twice daily demonstrated the highest virological and immunological responses. Adverse event incidence was similar between treatments; headache and diarrhoea were more common with CPI(s). CONCLUSIONS: TMC114/r demonstrated statistically higher 24-week virological response rates and CD4 cell count increases than CPI(s). TMC114/r 600/100 mg twice daily has received regulatory approval in treatment-experienced patients. 相似文献
112.
113.
G. Brusa F. Claudiani A. Piccardo N. Pizio R. Stoehr 《The Italian Journal of Neurological Sciences》1990,11(1):43-47
86 patients suffering from various senile and presenile degenerative diseases were studied using scinticisternography with
In111-DTPA. Flow reversal and delayed clearance were observed in 62 of these patients. These alterations, possibly related to the
cerebrospinal fluid dynamics, show the aspecificity of the SC picture. The SC picture does not seem to be correlated to the
clinical signs.
Sommario Sono stati sottoposti a scinticisternografia (SC) con In111-DTPA 86 pazienti affetti da malattie degenerative del SNC dell'età presenile e senile. Si sono osservati 62 casi con inversione del flusso liquoralee/o ritardata clearance dell'isotopo. Queste alterazioni, probabilmente legate alla dinamica liquorale, evidenziano l'aspecificità dei risultati della SC, i quali non sembrano correlati alla sintomatologia clinica.相似文献
114.
Accidental pleural puncture by a thoracic epidural catheter 总被引:2,自引:0,他引:2
We report the occurrence of an accidental pleural puncture by an epidural catheter that happened during the attempted induction of thoracic epidural anaesthesia using a paramedian approach in an awake patient. The incorrect placement of the catheter was recognised while the patient was undergoing thoracoscopic surgery. The possibility of accidental pleural puncture during attempted thoracic epidural catheter placement by either the paramedian or the midline approach should be borne in mind. A misplaced catheter may injure lung tissue and result in a potentially dangerous intra-operative tension pneumothorax. 相似文献
115.
The evaluation of 139 mandibular fractures with wisdom teeth in the fracture line permits to draw the following conclusions: 1. Partially retained teeth in the fracture line frequently lead to infections. For this reason, they should be removed on principle prior to immobilization. 2. Retained teeth or tooth germs caused in no case an infection; consequently, they must not be removed. 3. Fully erupted teeth produced but occasionally an infection of the fracture line. In such cases, the therapy will depend on the functional value of the respective tooth. 相似文献
116.
Primary and secondary heart tumours in dogs and cats 总被引:2,自引:0,他引:2
Aupperle H März I Ellenberger C Buschatz S Reischauer A Schoon HA 《Journal of comparative pathology》2007,136(1):18-26
Primary and secondary neoplasms of the canine and feline heart are uncommon. During a 2-year period, 83 dogs suffering from primary cardiac (n=11), extracardiac benign (n=6) or malignant (n=66) tumours and 30 cats with primary cardiac (n=1) or extracardiac (n=29) malignant tumours were examined. Echocardiography revealed four cases of primary cardiac neoplasms in dogs, but secondary heart tumours were not detected. After necropsy, tissue samples from the heart and tumours were examined histologically and immunohistochemically. In dogs, primary neoplasms included seven haemangiosarcomas, two chemodectomas, one rhabdomyosarcoma, and one neurofibrosarcoma. In 24 of 66 dogs examined, metastases of extracardiac neoplasms were found in the heart (15 carcinomas, six malignant lymphomas, three haemangiosarcomas). In cats, one case of primary haemangiosarcoma of the pericardium and five cases of secondary cardiac tumours (two malignant lymphomas, three carcinomas) occurred. Cardiac neoplasms in cats were not identified clinically but were detected by detailed gross sectioning of the heart (n=2) or histopathological examinations (n=3). This study showed an unexpectedly high number (36%) of dogs with cardiac metastases. 相似文献
117.
Histomorphological and immunohistochemical characterization of equine granulosa cell tumours 总被引:1,自引:0,他引:1
Ellenberger C Bartmann CP Hoppen HO Kratzsch J Aupperle H Klug E Schoon D Schoon HA 《Journal of comparative pathology》2007,136(2-3):167-176
Benign (n=33) and malignant metastasizing (n=1) granulosa cell tumours (GCTs) from 34 mares aged 3-21 years, and normal (control) ovaries from nine mares aged 3-10 years, were examined histologically and immunohistochemically (for inhibin alpha, glutathione S-transferase alpha [GSTalpha], c-erbB-2 oncoprotein [cerb], cytokeratin, vimentin, desmin and alpha-actin), the results being related where appropriate to clinical signs and endocrinological data. Availability permitting, serum samples from GCT-affected mares before and several weeks after ovariectomy were examined for the following hormones: oestradiol, progesterone and testosterone (by radioimmunoassay); and inhibin B (by a cross-reactive ELISA). Histological examination revealed that the GCTs were predominantly well differentiated neoplasms. The metastasizing GCT differed immunohistochemically from the benign GCTs in respect of the expression patterns of vimentin, cerb and GSTalpha in the granulosa cells. A notable feature was the presence of Leydig-like cells in mares with stallion-like behaviour or elevated serum testosterone, or both. GSTalpha immunolabelling indicated that the Leydig-like cells were potential producers of steroid hormone. From the immunohistochemical and endocrinological findings it was concluded that GCTs produce abnormally high concentrations of inhibin, which reduce the release of follicle-stimulating hormone, leading to atrophy of the contralateral ovary-a finding in 27 of the mares. 相似文献
118.
119.
Elisabeth E. Fransen van de Putte Wolfgang Otto Arndt Hartmann Simone Bertz Roman Mayr Johannes Bründl Johannes Breyer Quentin Manach Eva M. Compérat Joost L. Boormans Judith Bosschieter Michael A.S. Jewett Robert Stoehr Geert J.L.H. van Leenders Jakko A. Nieuwenhuijzen Alexandre R. Zlotta Kees Hendricksen Morgan Rouprêt Bas W.G. van Rhijn 《Urologic oncology》2018,36(8):361.e7-361.e13
Background
Reliable prognosticators for T1 bladder cancer (T1BC) are urgently needed. Objective: To compare the prognostic value of 2 substage systems for T1BC in patients treated by transurethral resection (TUR) and adjuvant bacillus Calmette-Guérin therapy.Design, setting, and participants
The slides of 601 primary T1BCs from four institutes were reviewed by 2 uropathologists and substaged according to 2 classifications: metric substage according to T1 microinvasive (T1m—lamina propria invasion <0.5 mm) and T1 extensive invasive (pT1e—invasion ≥ 0.5 mm), and according to invasion of the muscularis mucosae (MM) (T1a—invasion above or into MM/T1b).Outcome measurements and statistical analysis
Multivariable analyses for progression-free (PFS) and cancer-specific survival (CSS) were performed including substage, size, multiplicity, carcinoma in situ, sex, age, WHO-grade 1973, and WHO-grade 2004 as variables.Results
Median follow-up was 5.9 years (interquartile range: 3.3–9.0). Progression to T2BC was observed in 148 (25%) patients and 94 (16%) died of BC. The MM was not present at the invasion front in 135 (22%) of tumors. Slides were substaged as follows: 213 T1m and 388 T1e and 281 T1a and 320 T1b. On multivariable analysis, T1m/e substage and WHO 1973 grade were the strongest prognosticators for PFS (hazard ratio [HR] = 3.8 and HR = 1.8) and CSS (HR = 2.7 and HR = 2.6), respectively. Other prognostic factors for CSS were age (HR = 1.03), and tumor size (HR = 1.8). Substage according to MM-invasion was not significant. Our study was limited by its retrospective design and that standard re-TUR was not performed if TUR was macroscopically complete and muscularis propria was present in resected specimens.Conclusions
Metric substaging of T1BC was possible in all cases of 601 T1BC patients and it was a strong independent prognosticator of both PFS and CSS. 相似文献120.
Nicolai Leonhartsberger Renate Pichler Brigitte Stoehr Wolfgang Horninger Hannes Steiner 《World journal of urology》2014,32(4):1087-1091