全文获取类型
收费全文 | 528篇 |
免费 | 32篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 57篇 |
妇产科学 | 22篇 |
基础医学 | 95篇 |
口腔科学 | 14篇 |
临床医学 | 33篇 |
内科学 | 83篇 |
皮肤病学 | 19篇 |
神经病学 | 22篇 |
特种医学 | 15篇 |
外科学 | 30篇 |
综合类 | 4篇 |
预防医学 | 64篇 |
眼科学 | 2篇 |
药学 | 54篇 |
中国医学 | 2篇 |
肿瘤学 | 43篇 |
出版年
2023年 | 7篇 |
2022年 | 10篇 |
2021年 | 21篇 |
2020年 | 10篇 |
2019年 | 24篇 |
2018年 | 16篇 |
2017年 | 13篇 |
2016年 | 18篇 |
2015年 | 11篇 |
2014年 | 20篇 |
2013年 | 26篇 |
2012年 | 38篇 |
2011年 | 53篇 |
2010年 | 19篇 |
2009年 | 11篇 |
2008年 | 29篇 |
2007年 | 26篇 |
2006年 | 35篇 |
2005年 | 31篇 |
2004年 | 29篇 |
2003年 | 22篇 |
2002年 | 28篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 5篇 |
1998年 | 4篇 |
1997年 | 9篇 |
1996年 | 5篇 |
1995年 | 4篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 3篇 |
1989年 | 5篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1977年 | 2篇 |
1974年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有560条查询结果,搜索用时 15 毫秒
11.
Molly R. Burma John W. Rachow Kenneth G. Saag Sheela Kolluri 《Arthritis \u0026amp; Rheumatology》1996,9(3):216-222
Objective . To determine patients' knowledge of the safe use and toxicity of methotrexate (MTX) and to define educational interventions implemented by a rheumatology nurse that improved patients' understanding of MTX therapy. Methods . One hundred eighty-three patients from a university-based rheumatology clinic who were taking MTX completed an initial knowledge questionnaire concerning the proper use and possible toxicity of MTX. Following completion, a nurse reviewed the correct answers with each patient and provided written information on MTX. One hundred thirty-eight of these patients completed a followup questionnaire at the next visit or by mail. The questionnaires were analyzed, and a total MTX knowledge score was calculated. Results . MTX knowledge improved significantly between questionnaires; mean total score (±SD) increased from 7.32 ± 3.99 to 10.23 ± 3.29 (P < 0.001). After accounting for a person's initial questionnaire score, the addition of a supplemental “MTX pocketcard” was associated with a higher score on the followup questionnaire (adjusted odds ratio [OR] = 2.37; 95% confidence interval [CI] 1.14, 4.95; P = 0.021). Patients over age 55 were 4 times more likely to have a poorer score compared with patients under age 45 (adjusted OR = 0.23; 95% CI 0.07, 0.73; P = 0.013). Conclusion . Knowledge of the toxicity and safe use of MTX was significantly improved by a patient education program utilizing a rheumatology nurse. Older individuals appear to be at higher risk for knowledge deficits. A supplemental MTX pocket-card proved to be a simple but beneficial addition to our MTX educational program. 相似文献
12.
Sara Canovas Nunes Serena De Vita Andrew Anighoro Franois Autelitano Edward Beaumont Pamela Klingbeil Meaghan McGuinness Beatrice Duvert Chad Harris Lu Yang Sheela Pangeni Pokharel Chun-Wei Chen Monika Ermann David A. Williams Haiming Xu 《Blood cancer journal》2022,12(4)
RAS mutations prevalent in high-risk leukemia have been linked to relapse and chemotherapy resistance. Efforts to directly target RAS proteins have been largely unsuccessful. However, since RAS-mediated transformation is dependent on signaling through the RAS-related C3 botulinum toxin substrate (RAC) small GTPase, we hypothesized that targeting RAC may be an effective therapeutic approach in RAS mutated tumors. Here we describe multiple small molecules capable of inhibiting RAC activation in acute lymphoblastic leukemia cell lines. One of these, DW0254, also demonstrates promising anti-leukemic activity in RAS-mutated cells. Using chemical proteomics and biophysical methods, we identified the hydrophobic pocket of phosphodiester 6 subunit delta (PDE6D), a known RAS chaperone, as a target for this compound. Inhibition of RAS localization to the plasma membrane upon DW0254 treatment is associated with RAC inhibition through a phosphatidylinositol-3-kinase/AKT-dependent mechanism. Our findings provide new insights into the importance of PDE6D-mediated transport for RAS-dependent RAC activation and leukemic cell survival.Subject terms: Acute lymphocytic leukaemia, Acute myeloid leukaemia, Drug development, Targeted therapies 相似文献
13.
14.
Asabor Emmanuella Ngozi Lett Elle Moll Anthony Shenoi Sheela V. 《AIDS and behavior》2021,25(8):2517-2532
AIDS and Behavior - South Africa maintains the world’s largest HIV prevalence, accounting for 20.4% of people living with HIV internationally. HIV Pre-exposure prophylaxis (PrEP) has... 相似文献
15.
Gandham SriLakshmi Bhavani Hitesh Shah Ashwin B. Dalal Anju Shukla Sumita Danda Shagun Aggarwal Shubha R. Phadke Neerja Gupta Madhulika Kabra Kalpana Gowrishankar Anju Gupta Meenakshi Bhat Ratna D. Puri Sunita Bijarnia‐Mahay Sheela Nampoothiri Kavitha M. Mohanasundaram S. Rajeswari Akhil M. Kulkarni Muralidhar L. Kulkarni Prajnya Ranganath A. Radha Ramadevi Sankar V. Hariharan Katta Mohan Girisha 《American journal of medical genetics. Part A》2015,167(10):2481-2484
16.
17.
Srinivasan S Sheela D;Shashikala Mathew R Bazroy J Kanungo R 《Indian journal of medical microbiology》2006,24(3):182-185
Purpose: It is necessary to define the problem of methicillin resistant Staphylococcus aureus (MRSA) in every hospital to evolve control strategies. The objectives of this study were to determine factors influencing the persistence of MRSA in patients with hospital acquired infection and to identify alternate cost effective antibiotics. Methods: A six month study was carried out for 50 patients with MRSA infection. Treatment modalities and risk factors were determined by a preset protocol. Minimum inhibitory concentration of commonly used antibiotics was determined. Results: The risk factors were prolonged postoperative morbidity, prior antibiotic therapy and emergency admissions. Seventy percent of the isolates were from postoperative cases undergoing emergency surgeries. Isolation was highest during the second week of hospital stay. Emergency admissions had a significantly higher chance of early isolation. Prior treatment with multiple antibiotics in 38% was found to be another major risk factor. Ofloxacin was seen to be efficacious in a small percentage of cases. Rifampicin in combination with ofloxacin and clindamycin were found to be other good alternatives. Ofloxacin was found to be the cheapest and vancomycin the most expensive, for a full course of treatment. Conclusions: Minimizing risk factors and attention to alternate cost effective combination therapy may ease the problem of management of infections with MRSA. 相似文献
18.
Sheela R Geraghty Susan M Pinney Gopalan Sethuraman Ashwini Roy-Chaudhury Heidi J Kalkwarf 《Ambulatory Pediatrics》2004,4(3):226-231
OBJECTIVE: Over 3% of infants born annually in the United States are from a multiple gestation pregnancy, yet there is little data published about the feeding practices of their mothers. The objectives of this study were to determine and compare the rates of breast milk feeding of mothers of multiples and mothers of singletons. METHODS: Stratified random sampling (n = 686) on the basis of plurality of pregnancy and gestational age at delivery was performed on a 1999 birth certificate database in the greater Cincinnati area. We collected information about infant feeding during the first 6 months of life using a retrospective, self-administered questionnaire and phone interview from mothers of term singletons (TS), preterm singletons (PS), term multiples (TM), and preterm multiples (PM). Data were analyzed using chi-square and logistic or multiple regression. RESULTS: We obtained feeding information from 346 mothers (n = 81 TS, 80 PS, 90 TM, and 95 PM). By 3 days postpartum, PM provided breast milk less often than all other groups: TS = 69%, PS = 66%, TM = 73%, PM = 57% (P =.035). Among mothers who initiated breast milk feeding, the geometric mean duration of at least some breast milk feeding was significantly shorter for PM than for all other groups: TS = 23 weeks, PS = 19 weeks, TM = 24 weeks, and PM = 12 weeks (P =.002). CONCLUSIONS: Further evaluation of the potential causes for the lower breast milk feeding rates among PM is needed to develop effective intervention strategies and increase the number of preterm multiple gestation infants receiving breast milk. 相似文献
19.
20.