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101.
Lee JJ Shetty D Lee YS Kim SE Kim YJ Hong MK Son JY Jeong JM 《Nuclear medicine and biology》2012,39(3):325-333
PurposeWe evaluated new 111In-labeled amino acid derivatives, in which the amino acids are conjugated with1,4,7,10-tetra-azacyclododecane-1,4,7,10-tetraacetic acid (DOTA), 1,4,7,10-tetraazacyclododecane-1,7-diacetic acid (DO2A) or 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A).MethodsDOTA-aminoalanine (DOTA-A), DOTA-aminohomoalanine (DOTA-H), DOTA-lysine (DOTA-L), DO2A-alanine (DO2A-A), DO3A-alanine (DO3A-A) and DO3A-homoalanine (DO3A-H) were labeled with 111In. In vitro cell uptake assays were performed usingHep3B (a human hepatoma cell line), CT26 (a mouse colon cancer cell line) and U87MG (a human glioma cell line). In vitro cell uptake inhibition assays were performed using U87MG and 111In-DO3A-H. U87MG bearing xenografted mice were subject to biodistribution, SPECT imaging, autoradiography, and immunohistochemistry studies.ResultsOf the amino acid derivatives and cell lines examined, U87MG and 111In-DO3A-H showed highest uptake in vitro. This uptake was blocked by 2-aminobicyclo-[2,2,1] heptane-2-carboxylic acid (BCH) and by tryptophan. 111In-DO3A-HSPECT imaging of U87MG bearing xenografted mice visualized tumors (mean tumor-to-muscle ratio 3.16±0.74). Autoradiography and immunohistochemistry revealed that 111In-DO3A-H uptake matched L-type amino acid transporter 1 expression.ConclusionTumor uptake was successfully imaged using 111In-DO3A-H in U87MG bearing xenografted mice. 111In-DO3A-H appears to be useful for imaging tumors expressing L-type amino acid transporter. 相似文献
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104.
Nierman WC Feldblyum TV Laub MT Paulsen IT Nelson KE Eisen JA Heidelberg JF Alley MR Ohta N Maddock JR Potocka I Nelson WC Newton A Stephens C Phadke ND Ely B DeBoy RT Dodson RJ Durkin AS Gwinn ML Haft DH Kolonay JF Smit J Craven MB Khouri H Shetty J Berry K Utterback T Tran K Wolf A Vamathevan J Ermolaeva M White O Salzberg SL Venter JC Shapiro L Fraser CM Eisen J 《Proceedings of the National Academy of Sciences of the United States of America》2001,98(7):4136-4141
105.
Manav Sohal Simon G Duckett Xiahai Zhuang Wenzhe Shi Matthew Ginks Anoop Shetty Eva Sammut Sebastian Kozerke Steven Niederer Nic Smith Sebastien Ourselin Christopher Aldo Rinaldi Daniel Rueckert Gerald Carr-White Reza Razavi 《Journal of cardiovascular magnetic resonance》2014,16(1):58
Background
Many patients with electrical dyssynchrony who undergo cardiac resynchronization therapy (CRT) do not obtain substantial benefit. Assessing mechanical dyssynchrony may improve patient selection. Results from studies using echocardiographic imaging to measure dyssynchrony have ultimately proved disappointing. We sought to evaluate cardiac motion in patients with heart failure and electrical dyssynchrony using cardiovascular magnetic resonance (CMR). We developed a framework for comparing measures of myocardial mechanics and evaluated how well they predicted response to CRT.Methods
CMR was performed at 1.5 Tesla prior to CRT. Steady-state free precession (SSFP) cine images and complementary modulation of magnetization (CSPAMM) tagged cine images were acquired. Images were processed using a novel framework to extract regional ventricular volume-change, thickening and deformation fields (strain). A systolic dyssynchrony index (SDI) for all parameters within a 16-segment model of the ventricle was computed with high SDI denoting more dyssynchrony. Once identified, the optimal measure was applied to a second patient population to determine its utility as a predictor of CRT response compared to current accepted predictors (QRS duration, LBBB morphology and scar burden).Results
Forty-four patients were recruited in the first phase (91% male, 63.3 ± 14.1 years; 80% NYHA class III) with mean QRSd 154 ± 24 ms. Twenty-one out of 44 (48%) patients showed reverse remodelling (RR) with a decrease in end systolic volume (ESV) ≥ 15% at 6 months. Volume-change SDI was the strongest predictor of RR (PR 5.67; 95% CI 1.95-16.5; P = 0.003). SDI derived from myocardial strain was least predictive. Volume-change SDI was applied as a predictor of RR to a second population of 50 patients (70% male, mean age 68.6 ± 12.2 years, 76% NYHA class III) with mean QRSd 146 ± 21 ms. When compared to QRSd, LBBB morphology and scar burden, volume-change SDI was the only statistically significant predictor of RR in this group.Conclusion
A systolic dyssynchrony index derived from volume-change is a highly reproducible measurement that can be derived from routinely acquired SSFP cine images and predicts RR following CRT whilst an SDI of regional strain does not. 相似文献106.
107.
There has been a tremendous increase in the number of new and generic drugs coming into the market. The busy practitioner obtains the information from various sources, of which promotional literature forms an important source. The promotional literature provided by the pharmaceutical companies cannot be entirely relied upon; moreover, very few physicians are equipped with the skills of critically appraising it. The new drug should be relevant to the clinician's practice in terms of population studied, the disease and the need for new treatment. The methodology of the study should be carefully judged to determine the authenticity of the evidence. The new drug should be preferred over the existing one if it offers clear advantages in terms of safety, tolerability, efficacy and price. Critical appraisal of promotional literature can provide valuable information to the busy physician to practice evidence-based medicine. 相似文献
108.
Vijay D. Shetty Bhushan Shitole 《European journal of orthopaedic surgery & traumatology : orthopedie traumatologie》2010,20(6):469-474
Post-operative rehabilitation after staged total knee arthroplastiess (TKAs) in severely deformed bilateral knee disease can be a very difficult task. At the same time, the safety of simultaneous (one stage) bilateral TKA remains controversial and highly debatable. We wish to report our experience with simultaneous bilateral conventional TKAs for all severely deformed knees, followed by a carefully planned, evidence-based rehabilitation programme. Simultaneous bilateral TKA in severely deformed knees is safe and very effective, provided attention to details of rehabilitation and overall multidisciplinary medical care is exercised. 相似文献
109.
Shraddha Rani Modapathi Anusha Rohit Vankadari Aditya Varsha Prakash Shetty Akshatha Kotian Praveen Rai Indrani Karunasagar Vijaya Kumar Deekshit 《Indian journal of medical microbiology》2022,40(1):74-80
PurposeBurkholderia is a Gram-negative opportunistic bacterium capable of causing severe nosocomial infections. The aim of this study was to characterize Burkholderia cepacia complex and to compare different molecular methods used in its characterization.MethodsIn this study, 45 isolates of Burkholderia cepacia complex (Bcc) isolated from clinical cases were subjected to RAPD (Random amplified polymorphic DNA), recA-RFLP (Restriction fragment length polymorphism), 16SrDNA-RFLP, whole-cell protein analysis, recA DNA sequencing and biofilm assay.ResultsOf the 45 isolates tested, 97.7% were sensitive to ceftazidime, 82.2% were sensitive to Cotrimoxazole, 73.3% were sensitive to meropenem, 55.5% were sensitive to minocycline and 42.2% were sensitive to levofloxacin. Majority of the isolates harbored all the tested virulence genes except bpeA and cblA. The RAPD generated 11 groups (R1-R11), recA-RFLP 10 groups (A1-A10), 16SrRNA-RFLP 5 groups (S1–S5) and SDS-PAGE (Sodium Dodecyl Sulphate-Polyacrylamide gel electrophoresis) whole cell protein analysis revealed 12 groups (C1–C12). recA sequencing revealed that most of the isolates belonging to the genomovar III Burkholderia cenocepacia. Though all the methods are found to be efficient in differentiating Burkholderia spp., recA-RFLP was highly discriminatory at 96% similarity value. The study also identified a new strain Burkholderia pseudomultivorans for the first time in the country. Further, recA sequencing could identify the strains to species level. Majority of the multidrug-resistant strains also showed moderate to strong biofilm-forming ability, which further contributes to the virulence characteristics of the pathogens.ConclusionsThe study highlights the importance of combination of molecular methods to characterize Burkholderia cepacia complex. Molecular typing of these human pathogens yields important information for the clinicians in order to initiate the most appropriate therapy in the case of severe infections and to implement preventive measures for the effective control of transmission of Burkholderia spp. 相似文献
110.
Nakajima Y Takahashi T Shetty V Yamaguchi M 《The journal of physiological sciences : JPS》2012,62(3):191-197
To develop objective assessments of work fatigue, we investigated the patterns of changes in salivary cortisol levels in emergency
care providers working extended work shifts. Fourteen subjects, comprising seven physicians and seven physician assistants,
provided unstimulated saliva samples at regular intervals over the course of a 24-h work shift and over their subsequent free
day. There was a significant time effect, with early morning cortisol levels being significantly attenuated following the
work shift. Native diurnal variations varied by gender, with the female subjects manifesting greater cortisol levels. Physicians
also had higher cortisol profiles even though their wake–rest cycles were similar to those of the physician assistants. Our
results suggest that temporal changes, as well as diurnal similarities, in the salivary cortisol patterns can reflect work-related
stress and recovery. In particular, early morning cortisol levels may manifest individual reactivity to work stressors as
well as sleep deprivation. 相似文献