全文获取类型
收费全文 | 87384篇 |
免费 | 7167篇 |
国内免费 | 1745篇 |
专业分类
耳鼻咽喉 | 725篇 |
儿科学 | 1995篇 |
妇产科学 | 1133篇 |
基础医学 | 3669篇 |
口腔科学 | 4679篇 |
临床医学 | 8254篇 |
内科学 | 10545篇 |
皮肤病学 | 1535篇 |
神经病学 | 5336篇 |
特种医学 | 2089篇 |
外国民族医学 | 24篇 |
外科学 | 8884篇 |
综合类 | 15259篇 |
现状与发展 | 8篇 |
一般理论 | 4篇 |
预防医学 | 6889篇 |
眼科学 | 1501篇 |
药学 | 8749篇 |
161篇 | |
中国医学 | 8910篇 |
肿瘤学 | 5947篇 |
出版年
2024年 | 239篇 |
2023年 | 1403篇 |
2022年 | 2376篇 |
2021年 | 3563篇 |
2020年 | 3831篇 |
2019年 | 2936篇 |
2018年 | 2759篇 |
2017年 | 3047篇 |
2016年 | 3340篇 |
2015年 | 3085篇 |
2014年 | 6045篇 |
2013年 | 8363篇 |
2012年 | 5923篇 |
2011年 | 6206篇 |
2010年 | 5237篇 |
2009年 | 4499篇 |
2008年 | 4126篇 |
2007年 | 4253篇 |
2006年 | 3769篇 |
2005年 | 3188篇 |
2004年 | 2653篇 |
2003年 | 2306篇 |
2002年 | 1930篇 |
2001年 | 1577篇 |
2000年 | 1318篇 |
1999年 | 1048篇 |
1998年 | 869篇 |
1997年 | 786篇 |
1996年 | 658篇 |
1995年 | 578篇 |
1994年 | 541篇 |
1993年 | 467篇 |
1992年 | 387篇 |
1991年 | 344篇 |
1990年 | 254篇 |
1989年 | 258篇 |
1988年 | 237篇 |
1987年 | 227篇 |
1986年 | 201篇 |
1985年 | 258篇 |
1984年 | 206篇 |
1983年 | 137篇 |
1982年 | 180篇 |
1981年 | 145篇 |
1980年 | 126篇 |
1979年 | 113篇 |
1978年 | 66篇 |
1977年 | 64篇 |
1976年 | 51篇 |
1975年 | 29篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
121.
我院自1989年3月至1995年10月手术治疗21例创伤性膈疝,21例疝愈。 发病机理与胸腹腔压力差、腹腔脏器冲击膈肌及胸腔负压有关。同时简要介绍了创伤性膈疝的诊断和治疗。 相似文献
122.
Background: The bariatric patient exists in dynamic relationship with family members and friends who have considerable influence
upon the patient and his or her surgical outcome. When family members and friends behave as intimate saboteurs, they attempt
to hamper, hurt, or subvert the bariatric patient's goal of achieving and maintaining a healthy body weight. Successful or
not, intimate saboteurs provide significant treatment challenges for the patient and the treatment team. Methods and Patients:
Patient profiles provide examples of intimate sabotage. The psychological construct of Family Systems Theory is used as a
plausible explanation for the sabotage of friends and family. Conclusions: Multidisciplinary professionals treating the bariatric
patient must be aware of the critical influence of intimate saboteurs and the tactics they use to sabotage. Treatment guidelines
recommended by Family Systems Theory are presented as strategies to mitigate the influence of intimate saboteurs. 相似文献
123.
J. Carleson P. Kogner I. Bileviciute E. Theodorsson A. Appelgren B. Appelgren S. Kopp N. Yousef T. Lundeberg 《Archives of oral biology》1997,42(12):869-876
Temporomandibular joint (TMJ) arthritis was induced in female Lewis rats by unilateral injection of a suspension of heat-killed Mycobacterium butyricum in paraffin oil into the TMJ. Control rats received paraffin oil by the same route. Arthritic and control rats were pretreated either with capsaicin or denervation of the mandibular branch of the trigeminal nerve. Tissues were collected for neuropeptide extraction and analysed by radioimmunoassay and reverse-phase high-performance liquid chromatography. In all groups, the levels of substance P- (SP), calcitonin gene-related peptide- (CGRP) and neuropeptide Y- (NPY) like immunoreactivity (LI) were higher in the trigeminal ganglia than in the TMJs. In control rats, capsaicin significantly lowered the levels of SP-LI in the trigeminal ganglia and TMJ, but not CGRP-LI and NPY-LI. In the arthritic rats, capsaicin pretreatment significantly lowered the SP-LI and CGRP-LI in the trigeminal ganglia and TMJ, but not the NPY-LI. In the trigeminal ganglia the unilateral denervation significantly lowered SP-LI in control rats, and in arthritic rats SP-LI and CGRP-LI. On the denervated side of the arthritic TMJ, NPY-LI, SP-LI and CGRP- LI were significantly lowered as compared to the arthritic control rats and to the contralateral side. In this rat model, pretreatment with capsaicin and surgical denervation decreased the neuropeptide content in the trigeminal ganglia and the TMJ. The results clearly demonstrate a close interaction between increased neuropeptide release from sensory and sympathetic neurones after induction of arthritis in the rat. 相似文献
124.
125.
Regulations evolve and risks management becomes one of the biomedical engineers' preoccupations. Thus, risks are various, and consequently it is difficult to identify, to manage and to bring them under control. Furthermore, regulations exist for sectors like healthcare technology monitoring, but it is not the same thing for instance for the risks linked to the maintenance. Thus regulation in the sector of maintenance evolves and the decree of the 1st July law of health safety is going to modify the biomedical environment. The goal of this work is to study the tools and the methods of risks management that have been used for several years in the industrial field and to use them for some biomedical equipment like monitors or IV pumps. These methods adapted to these equipment will allow us to determine some appropriate rules of maintenance. 相似文献
126.
自1981年8月至1996年10月施行心脏直视手术1800例,发现永存左上腔静脉(PLSVC)11例,其中引入左心房1例。全部并发于其它心内畸形,且无特异体征。认为本中仔细探查是对PLSVC诊断的重要环节。本文对注意事项以及对不同类型的PLSVC引流入左房的外科处理方法进行了阐述。 相似文献
127.
H. Draper 《Journal of Renal Care》2002,28(Z2):39-42
The majority of patients being treated for acute renal failure in intensive care units have multiple medical problems. Accordingly, the withdrawal of renal replacement therapies should be considered as part of a general decision about whether to initiate or continue with treatment per se. Several guidelines on withdrawing and withholding therapy have been produced and some common themes emerge: concerns to avoid euthanasia, potential for benefit, patient consent (shared decision‐making), team consensus/decision‐making, and the provision of appropriate palliative care and resource implications. Each of these is considered in turn, although the word limit for this paper does not permit detailed exposition. 相似文献
128.
本文报道了气管切开术各种并发症的发病率,并对术中或术后并发症的病的病因、发病机理、治疗和预防进行了讨论。 相似文献
129.
目的:探讨影响镰旁大型脑膜瘤手术治疗的相关问题。方法:回顾性分析1994年8月至2001年8月经治的12例镰旁大型脑膜瘤的临床资料及手术经过。结果:12例肿瘤均全切除,无手术死亡。随访预后良好,无肿瘤复发。结论:镰旁大型脑膜瘤的手术应充分利用影像学资料及病人出现的阳性体征进行分析,选择合适的手术径路全部切除肿瘤,同时注重脑功能区及重要血管的保护、瘤基底部大脑镰的切除及周边组织的电灼处理。 相似文献
130.
原发性甲状腺功能亢进症合并甲状腺癌18例分析 总被引:1,自引:0,他引:1
目的:探讨原发性甲状腺功能亢进症(甲亢)合并甲状腺癌(甲癌)的诊断和治疗。方法:回顾分析1990年1月于2000年1月手术治疗18例甲亢合并甲癌患者的临床资料,结果:微小癌占83%(15/18)。术前彩超检查15例,14例发现可疑结节;13例行癌侧叶全切除和对侧叶次全切除术,5例行双侧叶次全切除术,其中3例同时行颈淋巴结清扫术,1例二次行颈淋巴结清扫术。随访16例,平均随访7年,1例死于癌肺转移,余者仍存活,结论:术前常规彩超检查发现可疑结节有助于术中冰冻切片病理检查,手术治疗应兼顾甲亢和甲癌。 相似文献