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51.
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Sebastian J. Reinstadler Thomas Stiermaier Johanna Liebetrau Georg Fuernau Charlotte Eitel Suzanne de Waha Steffen Desch Jan-Christian Reil Janine Pöss Bernhard Metzler Christian Lücke Matthias Gutberlet Gerhard Schuler Holger Thiele Ingo Eitel 《JACC: Cardiovascular Imaging》2018,11(3):411-419
Objectives
This study assessed the prognostic significance of remote zone native T1 alterations for the prediction of clinical events in a population with ST-segment elevation myocardial infarction (STEMI) who were treated by primary percutaneous coronary intervention (PPCI) and compared it with conventional markers of infarct severity.Background
The exact role and incremental prognostic relevance of remote myocardium native T1 mapping alterations assessed by cardiac magnetic resonance (CMR) after STEMI remains unclear.Methods
We included 255 consecutive patients with STEMI who were reperfused within 12 h after symptom onset. CMR core laboratory analysis was performed to assess left ventricular (LV) function, standard infarct characteristics, and native T1 values of the remote, noninfarcted myocardium. The primary endpoint was a composite of death, reinfarction, and new congestive heart failure within 6 months (major adverse cardiac events [MACE]).Results
Patients with increased remote zone native T1 values (>1,129 ms) had significantly larger infarcts (p = 0.012), less myocardial salvage (p = 0.002), and more pronounced LV dysfunction (p = 0.011). In multivariable analysis, remote zone native T1 was independently associated with MACE after adjusting for clinical risk factors (p = 0.001) or other CMR variables (p = 0.007). In C-statistics, native T1 of remote myocardium provided incremental prognostic information beyond clinical risk factors, LV ejection fraction, and other markers of infarct severity (all p < 0.05). The addition of remote zone native T1 to a model of prognostic CMR parameters (ejection fraction, infarct size, and myocardial salvage index) led to net reclassification improvement of 0.82 (95% confidence interval: 0.46 to 1.17; p < 0.001) and to an integrated discrimination improvement of 0.07 (95% confidence interval: 0.02 to 0.13; p = 0.01).Conclusions
In STEMI patients treated by PPCI, evaluation of remote zone alterations by quantitative noncontrast T1 mapping provided independent and incremental prognostic information in addition to clinical risk factors and traditional CMR outcome markers. Remote zone alterations may thus represent a novel therapeutic target and a useful parameter for optimized risk stratification. (Effect of Conditioning on Myocardial Damage in STEMI [LIPSIA-COND]; NCT02158468) 相似文献54.
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Kreitschmann-Andermahr Ilonka Siegel Sonja Unger Nicole Streetz-van der Werf Christine Karges Wolfram Schilbach Katharina Schröder Bernadette Szybowicz Janine Sauerwald Janina Zopf Kathrin Grzywotz Agnieszka Bidlingmaier Martin Sommer Heide Strasburger Christian J. 《Pituitary》2020,23(5):479-487
Pituitary - While reasons for non-adherence in children requiring growth hormone (GH) replacement (GH-Rx) are well researched, few studies have investigated adherence in adult GH deficient... 相似文献
57.
Janine A. Danks Adam N. Freeman T. John Martin 《Clinical reviews in bone and mineral metabolism》2014,12(3):104-118
After the discovery of parathyroid hormone-related protein (PTHrP) as the cause of the hypercalcemia of malignancy, it was found to be distributed widely in tissues, with its actions driving many physiologic and pathologic conditions. Its involvement in cancer extended to a contribution to the ability of cancer cells to promote bone resorption and establish as metastases. It was found to have multiple activities within the sequence, including a nuclear localizing sequence and a specific nuclear transport system. PTHrP and parathyroid hormone (PTH) appear to have arisen from a common ancestral gene and the comparative endocrinology and genomics studies focused on finding where the two genes appeared. PTHrP has been identified in bony and cartilaginous fish in the same tissues as in humans, indicating that PTHrP has fundamental and basic physiological roles in all vertebrates. PTHrP has been localized in fish neoplasms suggesting that PTHrP’s role in tumor formation is a conserved role from at least fish to humans. Interestingly, PTH has been identified in both bony and cartilaginous fish even though they lack a parathyroid gland and indicate that PTH’s evolutionary history is much longer too. So the point where PTHrP and PTH were duplicated is still unknown. A comparison among the analogous human, mouse, chicken, xenopus, and fugu sequences of the PTHrP gene demonstrates elements of conservation. When coupled with human Encode data and knowledge of interspecies gene structure, it offers rudimentary insights into function and underwrites hypotheses on physiology. 相似文献
58.
Susanne Jäger Simone Jacobs Janine Kröger Andreas Fritsche Anja Schienkiewitz Diana Rubin Heiner Boeing Matthias B. Schulze 《Diabetologia》2014,57(7):1355-1365
Aims/hypothesis
We aimed to examine the association between breast-feeding and maternal risk of type 2 diabetes and to investigate whether this association is mediated by anthropometric and biochemical factors.Methods
A case–cohort study nested within the European Prospective Investigation into Cancer and Nutrition (EPIC)-Potsdam Study between 1994 and 2005 including 1,262 childbearing women (1,059 in a random sub-cohort and 203 incident cases) mainly aged between 35 and 64 years at baseline was applied. Self-reported lifetime duration of breast-feeding was assessed by questionnaire. Blood samples were used for biomarker measurement (HDL-cholesterol, triacylglycerols, C-reactive protein, fetuin-A, γ-glutamyltransferase, adiponectin). A systematic literature search and meta-analysis was conducted of prospective cohort studies investigating breast-feeding and risk of type 2 diabetes.Results
The HR for each additional 6 months of breast-feeding was 0.73 (95% CI 0.56, 0.94) in EPIC-Potsdam. Meta-analysis of three previous prospective studies and the current study revealed an inverse association between breast-feeding duration and risk of diabetes (pooled HR for lifetime breast-feeding duration of 6–11 months compared with no breast-feeding 0.89; 95% CI 0.82, 0.97). Adjustment for BMI and waist circumference attenuated the association (HR per six additional months in EPIC-Potsdam 0.80; 95% CI 0.61, 1.04). Further controlling for potentially mediating biomarkers largely explained this association (HR 0.89; 95% CI 0.68, 1.16).Conclusions/interpretation
Longer duration of breast-feeding may be related to a lower risk of diabetes. This potentially protective effect seems to be reflected by a more favourable metabolic profile; however, the role of body weight as a mediator or confounder remains uncertain. 相似文献59.
60.
Burgess EA Lanyon JM Brown JL Blyde D Keeley T 《General and comparative endocrinology》2012,177(1):82-92
Assessing reproductive status and monitoring reproductive rates is important in the effective management of vulnerable marine mammal species such as the dugong (Dugong dugon). Knowledge of the reproductive physiology of this species is limited, and determining reproductive parameters (e.g., sexual maturation, pregnancy, and reproductive senescence) has been restricted by a lack of non-lethal methods for assessing reproductive status in free-ranging individuals. The aim of this study was to develop a method to identify pregnant individuals in a wild dugong population. Using an enzymeimmunoassay, we quantified concentrations of fecal progesterone metabolites (fP) in 322 dugongs, including confirmed pregnant females (n=10), presumed non-pregnant adult females (n=25), juvenile females (n=24), subadult females (n=41), adult females of unknown pregnancy state (n=63), and males of all sizes (n=159). External body morphometrics of each dugong were measured, and confirmation of pregnancy in adult female dugongs was determined by ultrasonography or observation of subsequent neonates. Concentrations of fP were different between sexes and reproductive size classes (P<0.001), and ~30-fold higher in confirmed pregnant dugongs (2017-7760 ng/g) compared to presumed non-pregnant females (30-221 ng/g), juvenile females (29-195 ng/g), and males (24-261 ng/g) (P<0.001). Body measures of maximum and anal girths, and teat length were all greater in confirmed pregnant females than presumed non-pregnant females (all P<0.05). We evaluated a Discriminant Function Analysis (DFA) to provide a model for predicting pregnant and non-pregnant dugongs. Cross-validated results showed that the DFA correctly classified 100% of pregnant and non-pregnant females using fP concentrations, body length, fineness ratio (an index of body shape), and teat length (a female reproductive trait). Using the DFA model, we classified the pregnancy status of all female dugongs and identified a total of 30 females as pregnant and 133 females as non-pregnant from the sampled population over the sample period. Pregnant dugongs in the Moreton Bay population are characterized by fecal progesterone metabolite concentrations > 1000 ng/g, body length ≥ 260 cm, maximum girth ≥ 215 cm, anal girth ≥ 126 cm, and teat length ≥ 5 cm long. In summary, analysis of fP concentrations in combination with body morphometrics may be used to diagnose pregnancy in free-ranging dugongs, and provides a new tool to monitor breeding rates of wild sirenian populations. 相似文献