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目的探讨在校大学生手机依赖与抑郁、焦虑的关联模式。方法采用分层整群随机抽样选取云南省某医学院校1 410名大一至大三在校大学生,通过手机依赖指数量表(MPAI)、焦虑自评量表(SAS)、抑郁自评量表(SDS)测量大学生手机依赖程度与抑郁焦虑水平。结果 10.1%的大学生存在手机依赖倾向,多重回归分析和结构方程模型显示:家庭年经济收入、焦虑是手机依赖的影响因素(P0.05),学院、年级、独生子女、抑郁是焦虑的影响因素(P0.05),焦虑在抑郁与手机依赖的关联中起到了显著的中介作用(P0.001),中、重度焦虑组比无焦虑组手机依赖更严重,OR值(95%CI)分别为2.362 (1.292~4.318)、5.805 (2.671~12.616)。结论在高家庭经济收入,焦虑程度高的大学生中,手机依赖程度较高;对大学生焦虑状况进行监测和及时干预可望有效改善手机依赖程度。 相似文献
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目的考察牛黄小儿退热贴的经皮渗透行为。方法采用垂直式改良Franz扩散池装置进行试验,以栀子苷含量为考察指标,HPLC测定接收液中栀子苷的含量。结果牛黄小儿退热贴在50%乙醇接收液中24h的平均累积透过率为16.73%,经皮渗透速率为1.84μg·cm~(-2)·h~(-1)。牛黄小儿退热贴在PEG400-95%乙醇-水(1∶3∶6)接收液中24h的平均累积透过率为7.03%,经皮渗透速率为0.76μg·cm~(-2)·h~(-1)。结论牛黄小儿退热贴的经皮渗透行为符合零级动力学方程,栀子苷的经皮渗透速率受接收液中乙醇浓度的影响。 相似文献
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目的探讨GIRK1在颞叶癫癎大鼠海马齿状回的表达及其意义.方法112只雄性SD大鼠随机分为实验组(n=70)与对照组(n=42),同时建立海人藻酸(KA)颞叶癫模型.选取KA腹腔注射后3、6、12、24、48 h,7、30 d为研究的时间点.用原位杂交法及免疫组织化学法检测海马齿状回GIRK1 mRNA及蛋白的表达.结果实验组大鼠海马齿状回GIRK1 mRNA表达在致癎后6 h较对照组减少,而在致癎后至7~30 d较对照组增高.结论在颞叶癫癎的不同时期海马齿状回GIRK1表达的变化反映出颞叶癫癎的复杂性. 相似文献
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Objective To investigate the roles of somatostatin(SS)positive intemeurons in the development and compensation of temporal lobe epilepsy.Methods Piloearpine-induced epilepsy rat model was established.Immunohistochemistry method was used to detect number changes and axonal sprouting of SS positive intemeurons in different domains of the hippocampus at difierent time points.Degeneration of SS positive interneurons and their neurophils were detected by the double immunofluorescence staining with SS and Fluoro-Jade B(FJB)at 7 and 60 days after status epilepticus (SE).Results In the exoerimental rat group,the number of SS positive neurons decreased in each hippocampal domain,and it reached the lowest at 7 days post-SE(There were 11.1±3.3 in hilus,2.8±0.9 in CA1region and 1.8±0.7 in CA1region,t=13.519,9.644 and 8.808,all P<0.01).In chronic phase,the number of SS neurons gradually recovered,and exceeded the control group in CA1 area at 60 days post-SE(12.8±1.5 vs 8.8±1.3,t=-4.506,P<0.01),however,the number of SS neurons in the hilus(25.5±4.6)and CA1 area(4.8±0.8)remained significantly less than normal levels(t value were 4.691 and 3.953.both P<0.01).Increased SS positive fibers were found in the lacunosum-molecular (1m)layer and outer molecular layer of dentate gyrus after 30 days post-SE,and numerous SS positive fibers were seen threnghout the layers of area CA1 at 60 days post-SE.Double immunofluuorescence revealed that a few SS positive interneurons and fibers were also labeled by FJB in area CA1 at 7 days post-SE and in CA domain/hilus at 60 days post-SE.Conclusions SS intemeurons loss plays an important role in the development of temporal lobe epilepsy.The loss is partially caIlsed by the degeneration and death of neurons;SS positive neurophils increase within area CA1 in chronic phase may play a significant role in the generation and compensation of temporal lobe epilepsy. 相似文献
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Objective To investigate the roles of somatostatin(SS)positive intemeurons in the development and compensation of temporal lobe epilepsy.Methods Piloearpine-induced epilepsy rat model was established.Immunohistochemistry method was used to detect number changes and axonal sprouting of SS positive intemeurons in different domains of the hippocampus at difierent time points.Degeneration of SS positive interneurons and their neurophils were detected by the double immunofluorescence staining with SS and Fluoro-Jade B(FJB)at 7 and 60 days after status epilepticus (SE).Results In the exoerimental rat group,the number of SS positive neurons decreased in each hippocampal domain,and it reached the lowest at 7 days post-SE(There were 11.1±3.3 in hilus,2.8±0.9 in CA1region and 1.8±0.7 in CA1region,t=13.519,9.644 and 8.808,all P<0.01).In chronic phase,the number of SS neurons gradually recovered,and exceeded the control group in CA1 area at 60 days post-SE(12.8±1.5 vs 8.8±1.3,t=-4.506,P<0.01),however,the number of SS neurons in the hilus(25.5±4.6)and CA1 area(4.8±0.8)remained significantly less than normal levels(t value were 4.691 and 3.953.both P<0.01).Increased SS positive fibers were found in the lacunosum-molecular (1m)layer and outer molecular layer of dentate gyrus after 30 days post-SE,and numerous SS positive fibers were seen threnghout the layers of area CA1 at 60 days post-SE.Double immunofluuorescence revealed that a few SS positive interneurons and fibers were also labeled by FJB in area CA1 at 7 days post-SE and in CA domain/hilus at 60 days post-SE.Conclusions SS intemeurons loss plays an important role in the development of temporal lobe epilepsy.The loss is partially caIlsed by the degeneration and death of neurons;SS positive neurophils increase within area CA1 in chronic phase may play a significant role in the generation and compensation of temporal lobe epilepsy. 相似文献
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维生素D衍生物联合供者骨髓细胞输注诱导异基因大鼠心脏移植免疫耐受 总被引:3,自引:2,他引:1
目的 探讨同种异基因心脏移植后免疫耐受的诱导。方法 建立大鼠颈部异位心脏移植模型,按分组分别给予门静脉输注供者骨髓细胞(DBMC)(B组)、骨化三醇灌胃(C组)、输注DBMC及骨化三醇灌胃(D组)以及环孢素A(CsA)灌胃(E组)。观察移植心脏的存活时间及心肌组织病理改变,测定心肌组织中肿瘤坏死因子及细胞间粘附分子-1 mRNA的表达以及血清钙、磷浓度,进行受者与供者及无关第三品系大鼠脾细胞混合淋巴细胞培养(MLR)。结果 D组移植心脏的存活时间较其它各组显著延长(P<0.05);术后7d,C组、D组、E组受者脾细胞均能显著抑制供者及第三方无关供者脾细胞作为刺激细胞引起的MLR;D组手术前后血磷、血钙浓度的差异无显著性(P>0.05);各组急性排斥反应的程度,D组最轻;D组肿瘤坏死因子及细胞间粘附分子-1 mRNA的表达受到显著抑制,与对照组(A组)、B、C组比较,差异有显著性(P<0.05)。结论 骨化三醇灌胃联合DBMC输注可显著延长移植心脏的存活时间,二者具有协同作用。 相似文献