全文获取类型
收费全文 | 516篇 |
免费 | 20篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 11篇 |
妇产科学 | 16篇 |
基础医学 | 44篇 |
口腔科学 | 8篇 |
临床医学 | 51篇 |
内科学 | 142篇 |
神经病学 | 26篇 |
特种医学 | 25篇 |
外科学 | 55篇 |
综合类 | 34篇 |
预防医学 | 39篇 |
眼科学 | 6篇 |
药学 | 42篇 |
中国医学 | 2篇 |
肿瘤学 | 30篇 |
出版年
2023年 | 8篇 |
2022年 | 11篇 |
2021年 | 19篇 |
2020年 | 5篇 |
2019年 | 14篇 |
2018年 | 22篇 |
2017年 | 9篇 |
2016年 | 12篇 |
2015年 | 17篇 |
2014年 | 14篇 |
2013年 | 30篇 |
2012年 | 33篇 |
2011年 | 30篇 |
2010年 | 17篇 |
2009年 | 11篇 |
2008年 | 17篇 |
2007年 | 27篇 |
2006年 | 23篇 |
2005年 | 21篇 |
2004年 | 25篇 |
2003年 | 21篇 |
2002年 | 22篇 |
2001年 | 9篇 |
2000年 | 18篇 |
1999年 | 15篇 |
1998年 | 10篇 |
1997年 | 5篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 1篇 |
1992年 | 9篇 |
1991年 | 7篇 |
1990年 | 5篇 |
1989年 | 8篇 |
1988年 | 9篇 |
1987年 | 5篇 |
1986年 | 5篇 |
1985年 | 4篇 |
1984年 | 4篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1975年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有537条查询结果,搜索用时 15 毫秒
71.
72.
Leather A Ismail EA Ali R Abdi YA Abby MH Gulaid SA Walhad SA Guleid S Ervine IM Lowe-Lauri M Parker M Adams S Datema M Parry E 《Lancet》2006,368(9541):1119-1125
In 1991, the Somali National Movement fighters recaptured the Somaliland capital city of Hargeisa after a 3-year civil war. The government troops of the dictator General Mohamed Siad Barre fled south, plunging most of Somalia into a state of anarchy that persists to this day. In the north of the region, the redeclaration of independence of Somaliland took place on May 18, 1991. Despite some sporadic civil unrest between 1994 and 1996, and a few tragic killings of members of the international community, the country has enjoyed peace and stability and has an impressive development record. However, Somaliland continues to await international recognition. The civil war resulted in the destruction of most of Somaliland's health-care facilities, compounded by mass migration or death of trained health personnel. Access to good, affordable health care for the average Somali remains greatly compromised. A former medical director of the general hospital of Hargeisa, Abdirahman Ahmed Mohamed, suggested the idea of a link between King's College Hospital in London, UK, and Somaliland. With support from two British colleagues, a fact-finding trip sponsored by the Tropical Health and Education Trust (THET) took place in July, 2000, followed by a needs assessment by a THET programme coordinator. Here, we describe the challenges of health-care reconstruction in Somaliland and the evolving role of the partnership between King's College Hospital, THET, and Somaliland within the context of the growing movement to link UK NHS trusts and teaching institutions with counterparts in developing countries. 相似文献
73.
Saad Aliyu Ahmed Mohammed Sani Shehu Murtala Abubakar Suleiman Eneyamire Dauda 《Nigerian medical journal》2013,54(5):313-315
Background:
Anogenital warts are a common cause of morbidity affecting mainly the productive age group of the economy. Paucity of data in Nigeria necessitated this study.Materials and Methods:
The pathology records of anogenital warts diagnosed in the Department of Pathology, Ahmadu Bello University Zaria between 1st January 2000 and 31st December 2009 were reviewed.Results:
A total of 68 warts were diagnosed within the study period with anogenital warts constituting 39.7%. Majority of cases (62%) were in the 20-39 years age group (range: 5–50 years) and vulva was the most common site affected.Conclusion:
Genital warts are common in our environment, biopsy of suspicious lesions is recommended for diagnostic yield. 相似文献74.
Mohsen Shahlaei Syed Mustafa Ghanadian Abdul Majid Ayatollahi M. Ahmed Mesaik Omer Mohamed Abdalla Suleiman Afsharypour Mohammed Rabbani 《Medicinal chemistry research》2013,22(4):1795-1803
Currently, scientists are focused on developing drug-like compounds as an alternative to the available immunosuppressive drugs with less side effects. Therefore, in the current study we tried to generate derivatives of lupeol and investigate their primary effects on the immune system. In the second part, a computational approach, integrating molecular docking, and molecular dynamics simulation was used to assess the likely mechanism of action and the preliminary analysis of the structure activity relationship (SAR). Our goal for this research was to develop an in-depth SAR for the design of future immunosuppressive lupeol analogs with the potential clinical use. 相似文献
75.
76.
Suleiman Abusrewil Abdulrahman Algeer Alanoud Aljifri Fatima Al Slail Melissa K. Andrew Mohamed Awad Tag Eldin Salah Al Awaidy Nissaf Ben Alaya Jalila Ben Khelil Ghassan Dbaibo Fawzi Derrar Omar Elahmer Nada Ghosn Guelsah Gabriel Cindy Grasso Mohamed Hassan Siddhivinayak Hirve Yusuf Kamal Mirza Yousef Moh'd Rateb Jalal Nourlil Marta C. Nunes Idris Omaima Oliver Ombeva Malande Mitra Saadatian‐Elahi Valentina Sanchez‐Picot Malik Sk. Mamunur Rahman Hesham Tarraf Sibongile Walaza 《Influenza and other respiratory viruses》2019,13(3):298-304
The Middle‐East and Africa Influenza Surveillance Network (MENA‐ISN), established in 2014, includes 15 countries at present. Country representatives presented their influenza surveillance programmes, vaccine coverage and influenza control actions achieved, and provided a list of country surveillance/control objectives for the upcoming 3 years. This report details the current situation of influenza surveillance and action plans to move forward in MENA‐ISN countries. Data were presented at the 8th MENA‐ISN meeting, organized by the Mérieux Foundation that was held on 10‐11 April 2018 in Cairo, Egypt. The meeting included MENA‐ISN representatives from 12 countries (Algeria, Egypt, Jordan, Kenya, Lebanon, Libya, Morocco, Pakistan, Saudi Arabia, South Africa, Tunisia and United Arab Emirates) and experts from the Canadian Centre for Vaccinology, and the World Health Organization. Meeting participants concluded that influenza remains a significant threat especially in high‐risk groups (children under‐5, elderly, pregnant women and immunosuppressed individuals) in the MENA‐ISN region. Additional funding and planning are required by member countries to contain this threat. Future meetings will need to focus on creative and innovative ways to inform policy and initiatives for vaccination, surveillance and management of influenza‐related morbidity and mortality especially among the most vulnerable groups of the population. 相似文献
77.
Azhar M. Alanazi Jinan R. Al-Rashoud Jumanah M. Aljahani Ahlam F. Alotaibi Alaa M. Althubaiti Suleiman M. Kojan Mohammed A. Aljumah Ahmad A. Abulaban 《Neurosciences (Riyadh, Saudi Arabia)》2019,24(3):168
Objectives:To assess the outcome and impact of multiple sclerosis (MS) using validated Arabic versions of the Barthel index (BI) multiple sclerosis impact scale (MSIS-29), the modified Rankin scale (mRS), and the expanded disability status scale (EDSS).Methods:A cross-sectional study conducted at King Abdulaziz Medical City in Riyadh, Kingdom of Saudi Arabia, during July-November 2017. All Saudi adult patients diagnosed with MS between 2000-2016 (269 patients) were included. Patients were contacted via phone calls and were assessed using a newly developed and validated multi-component questionnaire that included demographic data, disease course, and Arabic versions of the scales.Results:Out of 269 patients, 210 (78.2%) responded. The average patient age was 37.44±10.3 years. The majority were females (69.5%). Only, 51 (24.3%) patients reported worsening conditions. Annually, the average relapse rate was 2.28±1.91. In regard to patient outcomes, 120 (57.1%) showed no significant disability in mRS, 146 (69.5%) were ambulatory without aid in EDSS, and 185 (89.4%) were independent in BI scores. The average MSIS-29-PHYS score was 33.6±27.6 and MSIS-29-PSYCH score was 38.2±25.8. Modified Rankin scale and EDSS were significantly associated with the current use of disease-modifying therapy (DMT). Modified Rankin scale was negatively associated with delayed diagnosis. Barthel index showed significant association with medication compliance and the absence of attacks.Conclusion:Majority of patients had a favorable outcome that was linked with the use of DMT, compliance, early diagnosis, and absence of attacks.Multiple sclerosis (MS) is a neurological disease that is singularly characterized by multifocal areas of demyelination in the central nervous system (CNS). Though its precise etiology is unclear, the pathogenesis of the disease is believed to be immune-mediated myelin destruction and, eventually, axon disruption, which is the main cause behind the progressive disability.1 Multiple sclerosis is the most common neurological autoimmune disorder in the world, with an estimated number of 2.3 million until 2013. The increase from 2.1 million in 2008 to 2.3 million in 2013 has raised not only epidemiologists’ interest and alarm but also neurologists’.2 As of Kingdom of Saudi Arabia, it was estimated that 40/100,000 is the prevalence of multiple sclerosis in 2008.3 When it comes to gender, women are generally more affected than men, estimated by a study carried out in Kingdom of Saudi Arabia.4 Affected person’s average age of onset is 30 years.The outcome and prognosis of MS do not only vary depending on a plethora of factors but are also unpredictable in nature. It is well-recognized in the literature that MS can cause disability with varying degrees, and this can have an impact on patients’ quality of life (QoL) and daily activities.5 However, the outcome is not thoroughly studied, especially in Kingdom of Saudi Arabia. To predict MS patient outcomes, conventional and physician-based validated scales are usually used, one of which is the EDSS. It mainly assesses the degree of disability and monitors the diseases’ progression but with several limitations which are documented, such as its insensitivity to change over a spectrum of 2-3 years.6 Therefore, in this study, we additionally considered other vital scores and scales that not only assess disability via the EDSS, but also the mRS. Moreover, health-related quality of life (HRQoL) is evaluated by the MSIS-29 and the BI. Such measures will help us to have a more objective and reliable endpoint regarding the patients’ outcome and survival.In this study, we hypothesised that the outcome in regard to disability and HRQoL would differ depending on the variables we took into consideration when assessing MS. Thus, the aim was to evaluate the outcome of this neurological disease that we call MS. 相似文献
78.
79.
80.
Inflammatory response and cardioprotection during open-heart surgery: the importance of anaesthetics 总被引:2,自引:0,他引:2
Open-heart surgery triggers an inflammatory response that is largely the result of surgical trauma, cardiopulmonary bypass, and organ reperfusion injury (e.g. heart). The heart sustains injury triggered by ischaemia and reperfusion and also as a result of the effects of systemic inflammatory mediators. In addition, the heart itself is a source of inflammatory mediators and reactive oxygen species that are likely to contribute to the impairment of cardiac pump function. Formulating strategies to protect the heart during open heart surgery by attenuating reperfusion injury and systemic inflammatory response is essential to reduce morbidity. Although many anaesthetic drugs have cardioprotective actions, the diversity of the proposed mechanisms for protection (e.g. attenuating Ca(2+) overload, anti-inflammatory and antioxidant effects, pre- and post-conditioning-like protection) may have contributed to the slow adoption of anaesthetics as cardioprotective agents during open heart surgery. Clinical trials have suggested at least some cardioprotective effects of volatile anaesthetics. Whether these benefits are relevant in terms of morbidity and mortality is unclear and needs further investigation. This review describes the main mediators of myocardial injury during open heart surgery, explores available evidence of anaesthetics induced cardioprotection and addresses the efforts made to translate bench work into clinical practice. 相似文献