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排序方式: 共有2596条查询结果,搜索用时 15 毫秒
991.
992.
Objectives
To measure changes in the visual interpretation of the EEG by the human expert for neonatal seizure detection when reducing the number of recording electrodes.Methods
EEGs were recorded from 45 infants admitted to the neonatal intensive care unit (NICU). Three experts annotated seizures in EEG montages derived from 19, 8 and 4 electrodes. Differences between annotations were assessed by comparing intra-montage with inter-montage agreement (K).Results
Three experts annotated 4464 seizures across all infants and montages. The inter-expert agreement was not significantly altered by the number of electrodes in the montage (p?=?0.685, n?=?43). Reducing the number of EEG electrodes altered the seizure annotation for all experts. Agreement between the 19-electrode montage (K19,19?=?0.832) was significantly higher than the agreement between 19 and 8-electrode montages (dK?=?0.114; p?<?0.001, n?=?42) or 19 and 4-electrode montages (dK?=?0.113, p?<?0.001, n?=?43). Seizure burden and number were significantly underestimated by the 4 and 8-electrode montage (p?<?0.001). No significant difference in agreement was found between 8 and 4-electrode montages (dK?=?0.002; p?=?0.07, n?=?42).Conclusions
Reducing the number of EEG electrodes from 19 electrodes resulted in slight but significant changes in seizure detection.Significance
Four-electrode montages for routine EEG monitoring are comparable to eight electrodes for seizure detection in the NICU. 相似文献993.
Vivek Subbiah MD Vicki Huff PhD Johannes E.A. Wolff MD PhD Leena Ketonen MD PhD Frederick F. Lang Jr MD John Stewart MD Lauren Langford MD Cynthia E. Herzog MD 《Pediatric blood & cancer》2009,53(7):1349-1351
Frasier syndrome is characterized by a 46 XY disorder of sex development, nephropathy, and increased risk for gonadoblastoma due to Wilms tumor 1(WT1) mutation in the donor splice site of intron‐9, resulting in the splice form +KTS. Germ cell tumors and gonadoblastomas have been reported previously in Frasier syndrome. We present the clinical, radiological, and genetic (WT1 mutation analysis) of a 46 XY phenotypic female with Frasier syndrome with bilateral gonadoblastoma with dysgerminoma who developed pilocytic astrocytoma. Pediatr Blood Cancer 2009; 53:1349–1351. © 2009 Wiley‐Liss, Inc. 相似文献
994.
Reiman M Parkkola R Lapinleimu H Lehtonen L Haataja L;Pipari Study Group 《Pediatric research》2009,65(1):90-96
Preterm infants have smaller cerebral and cerebellar volumes at term compared with term born infants. Perinatal factors leading to the reduction in volumes are not well known. IL-6 -174 and -572 genotypes partly regulate individual immunologic responses and have also been connected with deviant neurologic development in preterm infants. Our hypothesis was that IL-6 -174 and -572 genetic polymorphisms are associated with brain lesions and regional brain volumes in very low birth weight or in very preterm infants. DNA was genotyped for IL-6 -174 and -572 polymorphisms (GG/GC/CC). Study infants (n = 175) were categorized into three groups according to the most pathologic brain finding in ultrasound examinations until term. The brain MRI performed at term was analyzed for regional brain volumes. Analyzed IL-6 genotypes did not show statistically significant association with structural brain lesions. However, IL-6 -174 CC and -572 GG genotypes associated with reduced volume of one brain region, the combined volume of basal ganglia and thalami, both in univariate and in multivariate analyses (p = 0.009, 0.009, respectively). The association of IL-6 -174 and -572 genetic polymorphisms with smaller volumes in deep gray matter provides us new ways to understand the processes leading to neurologic impairments in preterm infants. 相似文献
995.
Johannes S Kern Stefan Loeckermann Anja Fritsch Ingrid Hausser Wera Roth Thomas M Magin Claudia Mack Marcel L M��ller Oliver Paul Patrick Ruther Leena Bruckner-Tuderman 《Molecular therapy》2009,17(9):1605-1615
Here, we report on the first systematic long-term study of fibroblast therapy in a mouse model for recessive dystrophic epidermolysis bullosa (RDEB), a severe skin-blistering disorder caused by loss-of-function of collagen VII. Intradermal injection of wild-type (WT) fibroblasts in >50 mice increased the collagen VII content at the dermal–epidermal junction 3.5- to 4.7-fold. Although the active biosynthesis lasted <28 days, collagen VII remained stable and dramatically improved skin integrity and resistance to mechanical forces for at least 100 days, as measured with a digital 3D-skin sensor for shear forces. Experiments using species-specific antibodies, collagen VII–deficient fibroblasts, gene expression analyses, and cytokine arrays demonstrated that the injected fibroblasts are the major source of newly deposited collagen VII. Apart from transitory mild inflammation, no adverse effects were observed. The cells remained within an area ≤10 mm of the injection site, and did not proliferate, form tumors, or cause fibrosis. Instead, they became gradually apoptotic within 28 days. These data on partial restoration of collagen VII in the skin demonstrate the excellent ratio of clinical effects to biological parameters, support suitability of fibroblast-based therapy approaches for RDEB, and, as a preclinical test, pave way to human clinical trials. 相似文献
996.
997.
Khraisat A Jebreen SE Baqain ZH Smadi L Bakaeen L Abu-Hammad O 《The International journal of oral & maxillofacial implants》2008,23(4):705-708
PURPOSE: The aim of this multicenter study was to evaluate implant success and restorative complications of cement-retained implant-supported anterior partial prostheses in Jordan. MATERIALS AND METHODS: A retrospective study of all implants with a minimum of 1-year follow-up were used to support fixed, cement-retained restorations from April 2000 until March 2007. The cement-retained implants were loaded with either single- or multiple-tooth replacements. The Fisher exact test was performed to test the presence of any statistically significant difference in success concerning gender or arch of placement. RESULTS: Eighty-seven implants were placed in the anterior region of the mandible or maxilla in 49 patients at multiple clinical practices in Jordan. The age of the patients ranged from 17 to 85 years. Eighteen implants were placed in the mandible and 69 in the maxilla. Three maxillary implants in 2 male patients had 3-mm horizontal bone loss. Those 3 implants are still functioning and were considered surviving implants but not successful implants. Therefore, the implant cumulative survival rate for both arches and genders was 100%. The implant cumulative success rate was 95.78%. Three crowns (maxillary) were dislodged. No significant differences were revealed regarding gender or arch of placement (P > .05). CONCLUSIONS: Cement-retained implants exhibited high survival and success rates among a Jordanian population. 相似文献
998.
Päivi Nevalainen Viviana Marchi Marjo Metsäranta Tuula Lönnqvist Sanna Toiviainen-Salo Sampsa Vanhatalo Leena Lauronen 《Clinical neurophysiology》2017,128(7):1337-1343
Objective
To evaluate the added value of somatosensory (SEPs) and visual evoked potentials (VEPs) recorded simultaneously with routine EEG in early outcome prediction of newborns with hypoxic-ischemic encephalopathy under modern intensive care.Methods
We simultaneously recorded multichannel EEG, median nerve SEPs, and flash VEPs during the first few postnatal days in 50 term newborns with hypoxic-ischemic encephalopathy. EEG background was scored into five grades and the worst two grades were considered to indicate poor cerebral recovery. Evoked potentials were classified as absent or present. Clinical outcome was determined from the medical records at a median age of 21 months. Unfavorable outcome included cerebral palsy, severe mental retardation, severe epilepsy, or death.Results
The accuracy of outcome prediction was 98% with SEPs compared to 90% with EEG. EEG alone always predicted unfavorable outcome when it was inactive (n = 9), and favorable outcome when it was normal or only mildly abnormal (n = 17). However, newborns with moderate or severe EEG background abnormality could have either favorable or unfavorable outcome, which was correctly predicted by SEP in all but one newborn (accuracy in this subgroup 96%). Absent VEPs were always associated with an inactive EEG, and an unfavorable outcome. However, presence of VEPs did not guarantee a favorable outcome.Conclusions
SEPs accurately predict clinical outcomes in newborns with hypoxic-ischemic encephalopathy and improve the EEG-based prediction particularly in those newborns with severely or moderately abnormal EEG findings.Significance
SEPs should be added to routine EEG recordings for early bedside assessment of newborns with hypoxic-ischemic encephalopathy. 相似文献999.
Leena Shahla Rahul Vasudev Chandrika Chitturi Cindy Rodriguez Namrata Paul 《Diabetes & Metabolic Syndrome: Clinical Research & Reviews》2017,11(1):69-72
Objective
To compare the knowledge of physicians, residents and medical students in diagnosis, use of insulin and oral medication in management of Type 2 Diabetes Mellitus (DM) working in different healthcare specialties.Methods
A cross sectional survey of faculty, residents and medical students of different subspecialties in a single center was conducted. Questionnaire consisting of 20 questions was used. These questions were designed to assess knowledge about diagnosis, nomenclature of different insulin/oral medications and management of DM. There were 4 answers to every question with only one correct answer based on ADA guidelines and most recent literature.Results
The overall percentage correctly answered questions was ~74% for IM faculty, 64% for EM faculty, 71% for IM residents, 60% for FM residents, 56% for EM residents and 59% for students. Questions based on knowledge of insulin nomenclature and characteristics were answered correctly 74% of the time by IM faculty, 62% by EM faculty, 66% by IM residents, 69% by FM residents, 45% by EM residents and 49% by medical students. Questions on the use of insulin and inpatient DM management were answered correctly 66% for IM faculty, 54% for EM faculty, 66% for IM residents, 46% for FM residents, 55% for EM Residents, and 44% medical students. Questions based on oral medications and DM diagnosis were answered correctly by 81% for IM faculty, 73% for EM faculty, 78% for IM Resident, 76% FM Resident, 64% for EM residents and 79% for students.Conclusion
This study demonstrates the need for focused educational initiatives required in all subspecialties involved in management of diabetes mellitus for safe and efficient management of diabetes mellitus. 相似文献1000.
Georg?MachareyEmail authorView authors OrcID profile Mika?Gissler Leena?Rahkonen Veli-Matti?Ulander Mervi?V?is?nen-Tommiska Mika?Nuutila Seppo?Heinonen 《Archives of gynecology and obstetrics》2017,295(4):833-838