首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   14627篇
  免费   1455篇
  国内免费   569篇
耳鼻咽喉   37篇
儿科学   457篇
妇产科学   42篇
基础医学   2128篇
口腔科学   120篇
临床医学   2261篇
内科学   985篇
皮肤病学   48篇
神经病学   5234篇
特种医学   511篇
外国民族医学   2篇
外科学   1529篇
综合类   1218篇
预防医学   666篇
眼科学   46篇
药学   684篇
  23篇
中国医学   424篇
肿瘤学   236篇
  2024年   22篇
  2023年   225篇
  2022年   367篇
  2021年   670篇
  2020年   720篇
  2019年   657篇
  2018年   616篇
  2017年   620篇
  2016年   610篇
  2015年   586篇
  2014年   939篇
  2013年   1223篇
  2012年   773篇
  2011年   779篇
  2010年   666篇
  2009年   638篇
  2008年   619篇
  2007年   607篇
  2006年   577篇
  2005年   464篇
  2004年   451篇
  2003年   378篇
  2002年   331篇
  2001年   323篇
  2000年   240篇
  1999年   194篇
  1998年   176篇
  1997年   157篇
  1996年   140篇
  1995年   193篇
  1994年   157篇
  1993年   152篇
  1992年   148篇
  1991年   120篇
  1990年   105篇
  1989年   102篇
  1988年   89篇
  1987年   67篇
  1986年   84篇
  1985年   140篇
  1984年   119篇
  1983年   84篇
  1982年   83篇
  1981年   56篇
  1980年   48篇
  1979年   35篇
  1978年   29篇
  1977年   20篇
  1976年   17篇
  1973年   9篇
排序方式: 共有10000条查询结果,搜索用时 16 毫秒
1.
随着医疗救治水平的不断提高,早产儿的存活率明显增加,但早产常易伴发脑性瘫痪、运动和认知障碍等一系列神经发育问题,给家庭、社会带来沉重负担。生命早期大脑发育迅速,可塑性强,是进行早期运动干预的良好时机。本文就早产儿早期神经运动干预进行综述,旨在为临床医护人员对早产儿进行适宜有效的运动干预提供参考。  相似文献   
2.
IntroductionThe aim of this study was to compare long-term patient reported outcomes (PROs) in patients with locally advanced extremity soft tissue sarcoma (eSTS) after isolated limb perfusion followed by resection (IR), compared to extended resection (ER), primary amputation (A) or secondary amputation after IR (IR-A).MethodsPatients were selected from the respondents of a multi-institutional cross-sectional cohort survivorship study (SURVSARC) conducted among sarcoma survivors registered in the Netherlands Cancer Registry (NCR), 2–10 years after diagnosis. Used PROs were the EORTC QLQ-C30, the Cancer worry scale (CWS), the Hospital Anxiety and Depression Scale (HADS), and the Toronto Extremity Salvage Score (TESS).ResultsWe identified 97 eSTS survivors: IR = 20, ER = 49, A = 20, IR-A = 8. While there were no differences in PROs between IR and ER, results showed better functioning and functionality in both groups versus the amputation groups. The amputation groups scored significantly lower on physical functioning (A = 62.7, IR-A = 65.7 versus IR = 78.0, ER = 82.7, p = 0.001) and role functioning (A = 67.5, IR-A = 52.8 versus IR = 79.2, ER = 80.6, p = 0.039), both EORTC QLQ-C30 scales. Also for the TESS, the scores were significantly lower for the amputation groups compared to the limb sparing groups (upper extremity p = 0.007 with A = 68.9, IR-A = 71.6 versus IR = 93.3, ER = 91.1; lower extremity p < 0.001 with A = 72.2, IR-A50.9 versus IR = 84.5 and ER = 85.5). There were no significant differences between the groups on cancer worry, anxiety and depression.ConclusionHRQoL in eSTS survivors treated with IR or ER is equal; for maintenance of physical functioning and functionality IR and ER outperform an amputation.  相似文献   
3.
4.
5.
6.
BackgroundHigh injury rates following anterior cruciate ligament reconstruction (ACLR) motivate the need to better understand lingering movement deficiencies following return to sport. Athletic competition involves various types of sensory, motor, and cognitive challenges; however, postural control deficiencies during this spectrum of conditions are not well understood following ACLR.Research questionTo what extent is postural control altered following ACLR in the presence of sensory, motor, and cognitive challenges, and does postural control correlate with patient-reported symptoms?MethodsFourteen individuals following ACLR (4 m/10 f, 21.2 ± 2.4 yr, 76.9 ± 19.1 kg, 1.70 ± 0.14 m) and fourteen matched healthy controls (4 m/10 f, 21.2 ± 1.4 yr, 75.4 ± 15.3 kg, 1.70 ± 0.15 m) participated in the study. Participants completed single-leg balance, ACLR limb or matched side for controls, under four conditions: 1) eyes open, 2) eyes closed, 3) visual-cognitive dual task (i.e., reverse digit span), and 4) motor dual task (i.e., catching a ball). Sample entropy (SEn) was calculated for each balance condition to characterize regularity of center of pressure control. Participants also completed patient-reported outcomes to characterize self-reported knee function, symptoms, and fear. A mixed effects model tested for differences in SEn between balance conditions, and Spearman correlations tested for relationships between SEn and patient-reported outcomes.ResultsA significant Group-by-Condition interaction was detected (P = 0.043). While the motor dual task and eyes closed balance conditions were associated with the lowest SEn for both groups, only the visual-cognitive dual task condition demonstrated a significant difference between groups, with the ACLR group having lower SEn [95% confidence interval for ΔSEn: (0.03, 0.35)]. Lower KOOS-Sport scores were associated with decreased SEn for the ACLR group (ρ = 0.81, P < 0.001).SignificanceThese findings are consistent with ACLR individuals using a less automatic approach to postural control compared to controls, particularly when presented with a visual-cognitive challenge. Altered neuromuscular control persists well after ACLR surgery and can be related to patient-reported outcomes.  相似文献   
7.
Cassava (Manihot esculenta Crantz) is a plant that contains neurotoxins such as linamarin and lotaustraline. Its long-term consumption is associated with neuronal damage and contributes to the development of motor impairment in humans and rats. We investigated the effects of the consumption of cassava juice on renal and hepatic function and motor impairments in male rats. The rats received the vehicle, non-toxic and toxic doses of cassava juice, or linamarin as a pharmacological control, over 35 consecutive days. The effects were evaluated in an open field test, rotarod, and swim test. The toxic cassava dose and linamarin resulted in motor impairments in the rotarod and swim test from day 7 of treatment. The toxic cassava dose and linamarin increased the parameters that indicate renal and hepatic damage, with the exception of total protein and albumin levels. Behavioral variables that show motor incoordination (i.e., latency to fall in the rotarod) were negatively correlated with biochemical parameters of renal and kidney damage, whereas spin behavior was positively correlated. Our data indicate that chronic oral consumption of cassava juice caused renal and hepatic damage that was correlated with motor coordination impairment in rats, similarly to their principal neurotoxic compound, linamarin.  相似文献   
8.
[目的]观察针刺足运感区结合局部电针围刺与常规针刺、常规针刺联合足运感区治疗中风后尿失禁的临床疗效差异。[方法]将90例患者随机分为治疗组、对照1组和对照2组,每组30例,治疗组予针刺足运感区结合膀胱体表相应投影区域电针围刺;对照1组参照全国高等中医药院校"十三五"规划教材《针灸治疗学》中有关"尿失禁"的治疗选穴;对照2组在对照1组的基础上联合足运感区针刺,每日上午行神经内科常规治疗,每日下午行中风后尿失禁的临床治疗,每次30 min,每周连续治疗6次,6次为1个疗程,疗程间休息1 d,共2个疗程。观察3组治疗前后尿失禁程度、尿失禁临床症状评分及日常生活活动能力量表(ADL)评分,并比较3组患者的临床疗效。[结果] 3组患者治疗后尿失禁程度、尿失禁临床症状评分及ADL评分均较前改善(均P0.05),治疗组对尿失禁程度及尿失禁临床症状评分的改善较其他两组更明显(P0.05),且治疗组和对照2组的ADL评分明显优于对照1组(P0.05)。治疗组总有效率为93.3%(30/28),优于对照1组76.7%(30/23)和对照2组83.3%(30/25,P0.05)。[结论]针刺足运感区结合局部电针围刺治疗中风后尿失禁疗效显著。  相似文献   
9.
目的观察循经艾灸预防乳腺癌患者根治术后上肢水肿的效果。方法采用便利抽样法选取乳腺外科乳腺癌根治术的患者150例,随机分为对照组和观察组,每组75例。对照组行常规护理,观察组在对照组基础上在手术侧上肢循经艾灸。于术前1 d、术后第14天和术后1个月,测量两组患者患侧上肢水肿程度。结果观察组术后患侧上肢水肿发生率低于对照组(P<0.05)。结论术后循经艾灸可有效预防乳腺癌根治术后患侧上肢水肿,提高患者舒适度。  相似文献   
10.
目的对急性脑卒中患者实施早期康复治疗,分析其对患者运动功能的影响。方法对本院2015年1月—2018年6月期间收治的急性脑卒中患者,从中选择50例进行研究。根据病历单双号进行分组,每组各25例。对照组患者接受常规治疗,观察组患者在此基础上应用早期康复治疗。对两组患者的运动功能进行分析和评价。结果对照组治疗前的Fugl-Meyer评分为(17.4±7.4)分,治疗后的评分为(57.9±15.4)分,观察组治疗前的Fugl-Meyer评分为(18.1±7.3)分,治疗后的评分为(71.3±15.2)分。观察组患者与对照组治疗前的Fugl-Meyer评分差异无统计学意义(P>0.05),观察组治疗后的Fugl-Meyer评分明显高于对照组,两组相比差异有统计学意义(P<0.05)。结论采用早期康复治疗对急性脑卒中患者进行治疗,可以明显改善患者的运动功能,具有较高的应用价值。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号