全文获取类型
收费全文 | 597篇 |
免费 | 38篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 7篇 |
儿科学 | 31篇 |
妇产科学 | 1篇 |
基础医学 | 61篇 |
口腔科学 | 17篇 |
临床医学 | 53篇 |
内科学 | 163篇 |
皮肤病学 | 7篇 |
神经病学 | 15篇 |
特种医学 | 26篇 |
外科学 | 122篇 |
综合类 | 10篇 |
预防医学 | 9篇 |
眼科学 | 22篇 |
药学 | 46篇 |
中国医学 | 3篇 |
肿瘤学 | 47篇 |
出版年
2023年 | 13篇 |
2022年 | 29篇 |
2021年 | 70篇 |
2020年 | 23篇 |
2019年 | 38篇 |
2018年 | 43篇 |
2017年 | 32篇 |
2016年 | 40篇 |
2015年 | 27篇 |
2014年 | 49篇 |
2013年 | 50篇 |
2012年 | 67篇 |
2011年 | 52篇 |
2010年 | 20篇 |
2009年 | 17篇 |
2008年 | 15篇 |
2007年 | 16篇 |
2006年 | 12篇 |
2005年 | 13篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2002年 | 2篇 |
1997年 | 3篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1970年 | 1篇 |
排序方式: 共有640条查询结果,搜索用时 334 毫秒
171.
Apurva O. Badheka Ankit Chothani Sidakpal S. Panaich Kathan Mehta Nileshkumar J. Patel Abhishek Deshmukh Vikas Singh Shilpkumar Arora Nilay Patel Peeyush Grover Neeraj Shah Chirag N. Savani Achint Patel Vinaykumar Panchal Michael Brown Amir Kaki Ashok Kondur Tamam Mohamad Mahir Elder Cindy Grines Theodore Schreiber 《The American journal of cardiology》2014
172.
Introduction
Gagging is a protective reflex, but when the gag reflex becomes abnormally active, it poses a difficulty for the dentist because it hinders all aspects of dental procedures including diagnosis, radiography, and any form of active procedure.Methods
In this case report, to overcome this difficulty the authors used a glossopharyngeal nerve block technique that is used by anesthetists and otolaryngologists, but its endodontic use has gone previously unreported.Results
Response to gag reflex decreases after successful glossopharyngeal nerve block.Conclusions
The glossopharyngeal nerve block technique is a relatively safe, simple, and easy to master technique as compared with general anesthesia for treating a patient with an exaggerated gag reflex. The glossopharyngeal nerve block technique may be used in dental procedures in patients with an exaggerated gag reflex or when performing procedures in the posterior aspect of the mouth. Due caution should be exercised to prevent inadvertent intravascular administration of local anesthetic when using this procedure. 相似文献173.
174.
175.
Gaurav Sharma Ravijot Singh Kiran Kumar GN Vaibhav Jain Ankit Gupta Shivanand Gamanagatti Kamran Farooque Vijay Sharma 《International orthopaedics》2016,40(5):1009-1017
Purpose
To determine whether radiographic measurements derived from standard computed tomography (CT) evaluation can be used to predict likelihood of a peri-operative lateral femoral wall fracture in AO/OTA 31-A2 pertrochanteric fractures treated with a dynamic hip screw (DHS).Methods
Fifty-one patients with AO/OTA 31-A2 classified pertrochanteric fractures were evaluated using a pre-operative CT scan of the pelvis with both hips. Dimensions of the lateral wall were calculated for each patient using four parameters: (1) height of the lateral wall above the vastus ridge; (2) circumference of the lateral wall 2 cm below the vastus ridge at an angle of 135°; this circumference was further divided into an anterior, lateral and posterior component; (3) cortical thickness at the centre of the lateral component of the lateral wall; and (4) cortical index. All patients were treated with a 135° DHS. Postoperative radiographs were assessed for lateral femoral wall fracture.Results
Patients with a lateral wall fracture (17/51) had a smaller circumference (4.47 cm vs 5.44 cm p value?<0.001) as well as a lower height of the lateral femoral wall (1.37 cm vs 2.21 p value?<?0.001). Analysis of the three components of the circumference revealed a significant difference for the anterior component only and not for the lateral and posterior components. There was no statistical difference in the cortical thickness or cortical index in the two groups. The cutoff values for height of the lateral wall and anterior component were calculated using ROC curves and found to be 1.68 cm (AUC 0.918) and 2.10 cm (AUC 0.851) respectively.Conclusion
AO/OTA 31-A2 pertrochanteric fractures with a lateral wall height of > 1.68 cm and an anterior component of > 2.10 cm in circumference are not likely to sustain a lateral wall fracture when treated with a DHS.176.
177.
Anthony Fam Paul T Finger Ankit S Tomar Gaurav Garg Kimberly J Chin 《Indian journal of ophthalmology》2020,68(11):2439
Purpose:Current ocular antiseptic practice for intravitreal injection (IVI) employs 5% povidone–iodine (Betadine®) drops which frequently cause ocular discomfort and prolonged irritation. In an effort to improve comfort while maintaining efficacy, we studied a hypochlorous acid (HOCL 0.01%) spray washout prior to injection.Methods:Patients had received a minimum of 3 IVIs prepared with Betadine® antisepsis prior to entry in this study. Their subsequent IVIs were prepared with Betadine® followed by HOCL 0.01% washout. Facets of comfort were measured by a Likert-scaled questionnaire to compare their experiences after IVI.Results:Thirty-seven participants were enrolled. Addition of HOCL 0.01% spray after Betadine® reduced the duration of discomfort (P = 0.001) and need for artificial tears postinjection (P = 0.003). It improved their reported quality of life (P = 0.04) and sleep (P = 0.01). There were neither HOCL-related side effects nor endophthalmitis during this study.Conclusion:Topical HOCL 0.01% spray after topical Betadine® antisepsis significantly improved patient comfort following IVIs. 相似文献
178.
Mallikarjun M Heralgi V Kavitha Manisha Dwivedi V Preethi B V Roopasreez J Rajashekar Ankit Deokar 《Indian journal of ophthalmology》2020,68(12):2975
Purpose:The aim of this work was to study the change in contrast sensitivity (CS) in relation to depth of stromal ablation after wavefront-optimized (WFO) myopic laser in situ keratomileusis (LASIK).Methods:This was as prospective, longitudinal, comparative study. The study participants were divided into two groups: Group 1 ≤50 μ ablation depth; 60 eyes and group 2 >50 μ ablation depth; 60 eyes. All underwent WFO LASIK. Uncorrected and corrected distance visual acuity (UDVA and CDVA) and CS were measured preoperatively and postoperatively at 1 week, 2 weeks, and 2 and 6 months. Two-way repeated-measures analysis of variance (ANOVA), Unpaired t test and one-way repeated measures ANOVA were used to test differences across time periods within each treatment group. A value of P < 0.05 was considered as statistically significant.Results:The mean ablation depths in groups 1 and 2 were 39.30 μ ± 7.22 μ and 69.90 μ ± 12.09 μ, respectively; the maximum depth was 94.62 μ. In group 1, the preoperative mean CS was 1.91 ± 0.07, which improved postoperatively at 1 week (1.93 ± 0.06) and remained stable in subsequent follow-ups (1.94 ± 0.05). In group 2, the mean CS preoperatively was 1.87 ± 0.12, which postoperatively at 1 week and 6 months were 1.93 ± 0.07 and 1.94 ± 0.03, respectively (P < 0.05). Between the groups, preoperative CS was significantly different (P = 0.04), but the change in CS post-LASIK was insignificant (P > 0.05).Conclusion:There was a significant improvement in CS after WFO myopic LASIK in all patients irrespective of ablation depth (up to 94.62 μ). 相似文献
179.
180.
Mukul Mohindra Sukhbir Singh Sangwan Zile Singh Kundu Paritosh Gogna Anurag Tiwari Ankit Thora 《Hand (New York, N.Y.)》2014,9(2):179-186