全文获取类型
收费全文 | 1980篇 |
免费 | 162篇 |
国内免费 | 18篇 |
专业分类
耳鼻咽喉 | 21篇 |
儿科学 | 61篇 |
妇产科学 | 54篇 |
基础医学 | 243篇 |
口腔科学 | 88篇 |
临床医学 | 198篇 |
内科学 | 392篇 |
皮肤病学 | 81篇 |
神经病学 | 110篇 |
特种医学 | 61篇 |
外国民族医学 | 3篇 |
外科学 | 276篇 |
综合类 | 64篇 |
一般理论 | 1篇 |
预防医学 | 113篇 |
眼科学 | 40篇 |
药学 | 241篇 |
中国医学 | 7篇 |
肿瘤学 | 106篇 |
出版年
2024年 | 3篇 |
2023年 | 53篇 |
2022年 | 89篇 |
2021年 | 170篇 |
2020年 | 100篇 |
2019年 | 135篇 |
2018年 | 145篇 |
2017年 | 93篇 |
2016年 | 95篇 |
2015年 | 109篇 |
2014年 | 85篇 |
2013年 | 120篇 |
2012年 | 165篇 |
2011年 | 139篇 |
2010年 | 98篇 |
2009年 | 59篇 |
2008年 | 102篇 |
2007年 | 77篇 |
2006年 | 74篇 |
2005年 | 57篇 |
2004年 | 37篇 |
2003年 | 31篇 |
2002年 | 38篇 |
2001年 | 19篇 |
2000年 | 8篇 |
1999年 | 8篇 |
1998年 | 4篇 |
1997年 | 7篇 |
1996年 | 3篇 |
1995年 | 6篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 2篇 |
1991年 | 2篇 |
1990年 | 6篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1974年 | 1篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1967年 | 1篇 |
1940年 | 2篇 |
排序方式: 共有2160条查询结果,搜索用时 993 毫秒
71.
72.
Wafaa M.A. Farghaly Hamdy N. El-Tallawy Tarek A. Rageh Eman M. Mohamed Nabil A. Metwally Ghaydaa A. Shehata Reda Badry Mohamed A. Abd-Elhamed 《Seizure》2013,22(8):611-616
BackgroundDespite advances in treating epilepsy, uncontrolled epilepsy continues to be a major clinical problem. Therefore, this work aimed to study the epidemiology of uncontrolled epilepsy in Al-Kharga District, New Valley.MethodsThis study was carried out in 3 stages via door-to-door screening of the total population (62,583 persons). All suspected cases of epilepsy were subjected to case ascertainment, conventional ElectroEncephaloGraphy (EEG), and the Stanford-Binet Intelligence Scale. Patients who had been receiving suitable anti-epileptic drugs (AEDs) over the previous 6 months and were having active seizures were considered uncontrolled, according to Ohtsuka et al.23 The patients underwent serum AED level estimation, video EEG monitoring, and brain MRIs. Fifty age- and gender-matched patients with controlled epilepsy were chosen for statistical analysis and compared with true intractable patients.ResultsA total of 437 patients with epilepsy were identified, 30.7% of whom (n = 134/437) were uncontrolled, with a prevalence of 2.1/1000. A total of 52.2% of uncontrolled patients (n = 70/134) were inappropriately treated, while 47.8% (n = 64/134) were compliant with appropriate treatments. Video monitoring EEG of compliant uncontrolled patients demonstrated that 78.1% patients (n = 50/64) had definite epilepsy, while 21.9% (n = 14/64) had psychogenic non-epileptic seizures (PNES). A logistic regression analysis revealed that status epilepticus, focal seizures, and mixed seizure types were risk factors for intractability. 相似文献
73.
74.
75.
Eman Ahmed Alaa El-Din Heba El Sayed Mostafa Engy Fathiy Tantawy Dalia Abdallah El-Shafei 《Forensic science, medicine, and pathology》2019,15(3):352-361
There is an increasing demand for age estimations of living persons who are involved in civil and criminal procedures but lack a valid birth certificate indicating their date of birth. Several studies have recommended the application of magnetic resonance imaging (MRI) and assessment of the stage of epiphyseal fusion in age estimation. This study involved retrospective MRI analysis of 335 cases (217 males and 118 females) whose ages ranged from 8 to 28 years (yrs). We assessed the degree of ossification of the proximal tibial epiphysis depending on the classifications of Schmeling and Kellinghaus used for the main stages (I, II, III, IV & V) and substages (IIa, b, c & IIIa, b, c). Significant differences between males and females at stages IIIc, IV and V (p < 0.001) were observed. Additionally, the ossification of the proximal tibial epiphyses occurred earlier in females than in males (2–4 yrs). The mean of ages in stage IV was approximately 18.6 yrs. in females and 22.5 yrs. in males, meaning that stage IV can be used as a valuable forensic marker to determine whether the person in question has reached the age of 18 yrs. We concluded that the application of MRI in the assessment of the ossification status of the proximal tibial epiphysis could be helpful in age estimation for various forensic purposes. 相似文献
76.
Alloush Taha K. Mansour Osama Alloush Adel T. Roushdy Tamer Hamid Eman El-Shamy Mahmoud Shokri Hossam M. 《Neurological sciences》2022,43(2):799-809
Neurological Sciences - COVID-19 is a pandemic disease which predominantly affects the respiratory system with high critical care mortality and morbidity; however, it also causes multi-organ... 相似文献
77.
Incidence and risk factors of bacterial infections in children following autologous hematopoietic stem cell transplantation: Single‐center experience from Jordan
下载免费PDF全文
![点击此处可从《Pediatric transplantation》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Ayad Ahmed Hussein Eman T. Al‐Antary Rula Najjar Abdulhadi Al‐Zaben Haydar Frangoul 《Pediatric transplantation》2016,20(5):683-686
Bacterial infection is a serious sequela following AHSCT; however, limited data are available regarding pediatric recipients, especially in developing countries. We retrospectively analyzed the incidence and risk factors of bacterial infections during the first 100 days after AHSCT in children at KHCC in Amman, Jordan between January, 2005 and September, 2013. A total of 65 patients were identified, with median age of four yr (1–17). Forty‐seven patients (72.3%) had solid tumors and 18 (27.7%) had lymphoma. Bacterial infections were documented in 33 patients (50%), with a total of 63 episodes. Gram‐negative infection (57.1%) was more prevalent than Gram‐positive infection (38%). The risk of bacterial infections was higher among patients less than five yr of age (p = 0.028) and those who developed hypogammaglobulinemia requiring IVIG replacement (p = 0.001). Patients with solid tumors developed more bacterial infections compared to patients with lymphoma (p = 0.0057). No deaths were attributed to bacterial infection. Bacterial infection rate is high among recipients of AHSCT in Jordan with Gram‐negative bacteria being the most common. 相似文献
78.
Anti‐inflammatory and analgesic activities of cupressuflavone from Cupressus macrocarpa: Impact on pro‐inflammatory mediators
下载免费PDF全文
![点击此处可从《Drug development research》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Eman Al‐Sayed Haidy A. Gad Mohamed El‐Shazly Mohamed M. Abdel‐Daim Abdel Nasser Singab 《Drug development research》2018,79(1):22-28
Hit, Lead & Candidate Discovery |
79.
El-Sayed I. El-Desoky Eman M. Keshk Aya A. El-Sawi Mohamed A. Abozeid Laila A. Abouzeid Abdel-Rahman H. Abdel-Rahman 《Saudi Pharmaceutical Journal》2018,26(6):852-859
The versatile precursor 2-acetyl-4-allyl-1-hydroxy naphthalene was synthesized efficiently via Claisen rearrangement 2-acetyl-1-allyloxynaphthalene. The Claisen-Schmidt condensation of latter precursor afforded the corresponding chalcones which were exploited to synthesize a series of potential heterocycles such as pyrazoline, isoxazoline, benzocoumarin and benzoflavone. The synthesized products showed potent antioxidant and antimicrobial activities. Chalcone 3c, naphthyl pyrazoline 6b and hydroxycoumarin 13 exhibited the highest activity as antioxidants. Their binding mode showed specialized recognition of hydroxycoumarin 13 with the triad key amino acids at the active site of the oxidoreductase enzyme (PDB code 1DXO). 1-Hydroxynaphth-2-yl pyrazoline (6b) revealed the highest efficacy against both Gram positive and negative bacterial species. In silico molecular docking of pyrazoline 6b endorsed its proper binding at the active site of the 2EX6 enzyme which explains its potent antibacterial activity in comparison with standard ampicillin. 相似文献
80.
Eman M. Alfadhli 《Saudi Pharmaceutical Journal》2018,26(7):965-969