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排序方式: 共有209条查询结果,搜索用时 15 毫秒
1.
目的 探讨多功能艾灸刮痧按摩器在老年髋部骨折虚秘患者中的应用效果。 方法 将80例老年髋部骨折虚秘患者采用随机数字表法分为观察组和对照组各40例;在常规护理基础上,对照组采用九宫经络推拿法推拿腹部,观察组采用自行研制的多功能艾灸刮痧按摩器推拿腹部。比较两组治疗效果、首次排便时间、间隔排便时间、72 h排便次数及推拿时间。 结果 观察组疗效优于对照组,首次排便时间、间隔排便时间短于对照组,72 h排便次数多于对照组,但两组比较差异无统计学意义(均P>0.05);观察组推拿时间显著短于对照组(P<0.01)。 结论 对老年髋部骨折虚秘患者采用多功能艾灸刮痧按摩器推拿腹部,与手法推拿治疗虚秘的疗效相当,但其平均推拿耗时短,护士操作更节力,可提高护理工作效率。  相似文献   
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More than two thirds of the global population suffers from tooth decay, which results in cavities with various levels of lesion severity. Clinical interventions to treat tooth decay range from simple coronal fillings to invasive root canal treatment. Pulp capping is the only available clinical option to maintain the pulp vitality in deep lesions, but irreversible pulp inflammation and reinfection are frequent outcomes for this treatment. When affected pulp involvement is beyond repair, the dentist has to perform endodontic therapy leaving the tooth non‐vital and brittle. On‐going research strategies have failed to overcome the limitations of existing pulp capping materials so that healthy and progressive regeneration of the injured tissues is attained. Preserving pulp vitality is crucial for tooth homeostasis and durability, and thus, there is a critical need for clinical interventions that enable regeneration of the dentin‐pulp complex to rescue millions of teeth annually. The identification and development of appropriate biomaterials for dentin‐pulp scaffolds are necessary to optimize clinical approaches to regenerate these hybrid dental tissues. Likewise, a deep understanding of the interactions between the micro‐environment, growth factors, and progenitor cells will provide design basis for the most fitting scaffolds for this purpose. In this review, we first introduce the long‐lasting clinical dental problem of rescuing diseased tooth vitality, the limitations of current clinical therapies and interventions to restore the damaged tissues, and the need for new strategies to fully revitalize the tooth. Then, we comprehensively report on the characteristics of the main materials of naturally‐derived and synthetically‐engineered polymers, ceramics, and composite scaffolds as well as their use in dentin‐pulp complex regeneration strategies. Finally, we present a series of innovative smart polymeric biomaterials with potential to overcome dentin‐pulp complex regeneration challenges.  相似文献   
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Conventional chemotherapy is the main treatment for cancer and benefits patients in the form of decreased relapse and metastasis and longer overall survival. However, as the target therapy drugs and delivery systems are not wholly precise, it also results in quite a few side effects, and is less efficient in many cancers due to the spared cancer stem cells, which are considered the reason for chemotherapy resistance, relapse, and metastasis. Conventional chemotherapy limitations and the cancer stem cell hypothesis inspired our search for a novel chemotherapy targeting cancer stem cells. In this review, we summarize cancer stem cell enrichment methods, the search for new efficient drugs, and the delivery of drugs targeting cancer stem cells. We also discuss cancer stem cell hierarchy complexity and the corresponding combination therapy for both cancer stem and non-stem cells. Learning from cancer stem cells may reveal novel strategies for chemotherapy in the future.  相似文献   
5.
以N,N,N′,N′-四缩水甘油基-4,4′-二氨基二苯甲烷(TGDDM)和丙烯酸(AA)为原料,合成了一种既含有环氧基又含有乙烯基酯基团的新型混杂多官能团齐聚物树脂(MEVO)。以过氧化甲乙酮(MEKP)为引发剂、甲基四氢苯酐(MeTHPA)为环氧固化剂与MEVO共混制备了MEVO-MEKP、MEVO-MeTHPA和MEVO-MEKP-MeTHPA 3种固化体系。通过非等温DSC和FT-IR研究了MEVO的固化反应,求得了各体系表观反应活化能。结果表明:在MEVO-MEKP固化体系中,乙烯基酯按照自由基聚合机理固化,对环氧基没有影响;在MEVO-MeTHPA固化体系中,环氧基固化过程中乙烯基酯会发生热固化;在MEVO-MEKP-MeTHPA固化体系中,乙烯基酯和环氧基按各自机理固化并互相影响。  相似文献   
6.
目的:对比单侧多功能外固定支架与钢板内固定治疗开放性胫腓骨骨折的疗效。方法选择2015年5月至2016年3月期间我院骨科收治的80例开放性胫腓骨骨折患者为研究对象,根据随机数表法随机分为观察组与对照组,每组40例。对照组予钢板内固定治疗,观察组予单侧多功能外固定支架治疗,比较两组患者的临床疗效、骨折愈合时间及术后并发症发生情况。结果观察组患者骨折愈合时间为(6.27±1.44)个月,明显短于对照组的(7.95±1.89)个月,差异有统计学意义(P<0.05);观察组患者疗效优良率为95.00%,明显高于对照组的80.00%,差异有统计学意义(P<0.05);观察组患者发生伤口感染率为2.50%,并发症发生率为10.00%,均明显低于对照组的17.50%和32.50%,差异均有统计学意义(P<0.05)。结论单侧多功能外固定架治疗开放性胫腓骨骨折的疗效优于钢板内固定,且具有骨折愈合快、愈合质量高及并发症少等优点。  相似文献   
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目的多功能保留颈淋巴结清除术是治疗分化型甲状腺癌(differentiated thyroid cancer,DTC)颈部淋巴结转移的主要方法,较传统的功能性颈清除术更美观性,颈部功能保留更完善。如何更好的完成该手术,降低术后并发症,一直是外科医师探讨的问题。本研究主要探讨分层解剖在DTC多功能保留颈淋巴结清除术中应用的可行性及意义。方法回顾性分析沧州市中心医院2008-05-01—2019-03-31因DTC行甲状腺切除加Ⅱ~Ⅵ区多功能保留颈淋巴结清除术的457例患者临床资料,分为分层解剖法多功能保留手术组(A组,235例)和常规多功能保留手术组(B组,222例)。记录2组的手术学指标、术后并发症和出院时间等。采用χ^2检验及t检验对数据进行分析。结果2组患者基线资料比较,差异均无统计学意义,均P>0.05。A与B组手术时间分别为(127.85±14.65)和(136.80±14.65)min,t=-6.529,P<0.001;出血量分别为(34.38±14.44)和(48.02±18.88)mL,t=-8.705,P<0.001;术后住院时间分别为(8.57±1.41)和(11.59±2.21)d,t=-17.469,P<0.001;差异均有统计学意义。术后并发症发生率A组比B组更少,声音嘶哑发生率分别为1.28%(3/235)和4.50%(10/222),χ^2=4.304,P=0.038;皮缘坏死发生率分别为0.43%(1/235)和4.05%(9/222),χ^2=7.022,P=0.008;低血钙发生率分别为5.11%(12/235)和13.51%(30/222),χ^2=9.668,P=0.002;差异均有统计学意义。结论分层解剖法多功能保留手术不破坏解剖层次界限,明显缩短手术时间,减少术中出血,降低术后并发症发生率。因此其在甲状腺癌多功能保留的颈淋巴结清除术中合理可行。  相似文献   
9.
Peroxisomes play a crucial role in normal neurodevelopment and in the maintenance of the adult brain. This depends largely on intact peroxisomal β‐oxidation given the similarities in pathologies between peroxisome biogenesis disorders and deficiency of multifunctional protein‐2 (MFP2), the central enzyme of this pathway. Recently, adult patients diagnosed with cerebellar ataxia were shown to have mild mutations in the MFP2 gene, hydroxy‐steroid dehydrogenase (17 beta) type 4 (HSD17B4). Cerebellar atrophy also develops in MFP2 deficient mice but the cellular origin of the degeneration is unexplored. In order to investigate whether peroxisomal β‐oxidation is essential within Purkinje cells, the sole output neurons of the cerebellum, we generated and characterized a mouse model with Purkinje cell selective deletion of the MFP2 gene. We show that selective loss of MFP2 from mature cerebellar Purkinje neurons causes a late‐onset motor phenotype and progressive Purkinje cell degeneration, thereby mimicking ataxia and cerebellar deterioration in patients with mild HSD17B4 mutations. We demonstrate that swellings on Purkinje cell axons coincide with ataxic behavior and precede neurodegeneration. Loss of Purkinje cells occurs in a characteristic banded pattern, proceeds in an anterior to posterior fashion and is accompanied by progressive astro‐ and microgliosis. These data prove that the peroxisomal β‐oxidation pathway is required within Purkinje neurons to maintain their axonal integrity, independent of glial dysfunction.  相似文献   
10.
The blood-spinal cord barrier (BSCB) prevents many macromolecular agents from passing through to reach sites of injury in the spinal cord. This study evaluated the ability of a novel multifunctional liposome modified with polyethylene glycol (PEG) and transactivating-transduction protein (TAT) containing an iron core to cross the BSCB using a rat model of spinal cord injury. Rats were examined daily for a period of three days after spinal cord injury and injection of either the multifunctional modified liposome or control formulations using a 3.0 T magnetic resonance imaging spectrometer. A low signal was observed in the T2-weighted images. Prussian blue staining and flame atomic absorption spectrophotometry revealed that significantly more iron accumulated around the lesion site in the experimental group than the control groups (P?<?0.05). The findings from this study suggest that this multifunctional liposome carrier can cross the BSCB to accumulate around the lesion site.  相似文献   
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