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61.
Web-based molecular processing tools installed on corporate Intranets bring easy to use cheminformatics and molecular modeling capabilities directly to the desks of synthetic chemists, giving them comfortable access to data and their visualization and analysis, considerably improving efficiency of the drug design and development process. User-friendly tools that use a standard Web browser as an interface allow users access to a broad range of expert molecular processing tools and techniques, without the need for extensive expertise in their use.  相似文献   
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The ability of the human brain to form topological maps by self-organizing neuronal connectivity in an unsupervised manner inspired the development of a powerful computational tool, the self-organizing map (SOM). SOMs are used to cluster large amounts of data, simplifying and streamlining the laborious process of data interpretation. High-throughput screening techniques are a fixture in today's pharmaceutical industry, but mining the wealth of data afforded by such tools is an evolving process. In the past few years, SOMs have been married with nuclear magnetic resonance (NMR) to cluster NMR spectra in an unsupervised manner, finding new relationships and greatly reducing the time scientists must spend interpreting the spectra.  相似文献   
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Updates on the latest news and business collaborations in the pharmaceutical and biotech industry.  相似文献   
66.
File analysis based on 98,970 Pap tests on 58,053 patients from the Martland Medical Center of CMDNJ and its clinics was performed. Discovery rates, period prevalence and incidence rates were calculated for categories of mild to moderate dysplasia through invasive carcinoma. An incidence rate of 27/100,000 for invasive carcinoma was obtained, which is lower than the national average. Period prevalence and incidence rates of dysplasias are both high and similar. This indicates that epidemiologic parameters may need to be studied further. The mean age for the mild to moderate dysplasia was 25.7 years, for moderate to severe dysplasia, 29.29 years and for CIS, 33.25 years. These data may imply that younger women, especially in the urban areas, are at much higher risk than previously expected.  相似文献   
67.

Background

It is generally acknowledged that miRNAs play pivotal roles in the initiation and development of cancer. The aim of the current study is to investigate the clinicopathological role of miR-136-5p in lung adenocarcinoma and its underlying molecular mechanism.

Materials and methods

Data of a cohort of 1242 samples were provided by the Gene Expression Omnibus and The Cancer Genome Atlas to evaluate miR-136-5p expression in lung adenocarcinoma. A comprehensive meta-analysis integrating the expression data from all sources was performed, followed by a summary receiver operating curve plotted to appraise the upregulated expression of miR-136-5p in lung adenocarcinoma. Candidate targets of miR-136-5p were launched by the intersection of differentially expressed genes in The Cancer Genome Atlas and genes predicted by 12 web-based platforms. Then, hub genes were illustrated by a protein-protein interaction network. Furthermore, Kyoto Encyclopedia of Genes and Genomes, Gene Ontology and Protein Analysis Through Evolutionary Relationships analyses of potential target genes were carried out via bioinformatics tools.

Results

MiR-136-5p expression was upregulated in lung adenocarcinoma versus normal tissues (standard mean difference?=?0.43, 95% confidence interval: 0.27-0.58). The summary receiver operating characteristic curve further verified the upregulation of miR-136-5p in lung adenocarcinoma (area under curve?=?0.7459). A total of 311 candidate target genes of miR-136-5p were gathered to create a protein-protein interaction network. Molecular mechanism analysis unveiled the potential miR-136-5p target genes participated in cell adhesion molecules, focal adhesion, complement and coagulation cascades and blood coagulation.

Conclusion

MiR-136-5p is overexpressed in lung adenocarcinoma and is involved in the molecular mechanism of lung adenocarcinoma via suppressing the expressions of downstream targets, especially claudin-18, sialophorin and syndecan 2 that participate in cell adhesion.  相似文献   
68.

Background

Lung squamous cell cancer (LUSC) is a common but challenging malignancy. It is important to illuminate the molecular mechanism of LUSC. Thus, we aim to explore the molecular mechanism of miR-136-5p in relation to LUSC.

Methods

We used the Cancer Genome Atlas (TCGA) database to investigate the expression of miR-136-5p in relation to LUSC. Then, we identified the possible miR-136-5p target genes through intersection of the predicted miR-136-5p target genes and LUSC upregulated genes from TCGA. Bioinformatics analysis was performed to determine the key miR-136-5p targets and pathways associated with LUSC. Finally, the expression of hub genes, correlation between miR-136-5p and hub genes, and expected significance of hub genes were evaluated via the TCGA and Genotype-Tissue Expression (GTEx) project.

Results

MiR-136-5p was significantly downregulated in LUSC patients. Glucuronidation, glucuronosyltransferase, and the retinoic acid metabolic process were the most enriched metabolic interactions in LUSC patients. Ascorbate and aldarate metabolism, pentose and glucuronate interconversions, and retinol metabolism were identified as crucial pathways. Seven hub genes (UGT1A1, UGT1A3, UGT1A6, UGT1A7, UGT1A10, SRD5A1, and ADH7) were found to be upregulated, and UGT1A1, UGT1A3, UGT1A6, UGT1A7, and ADH7 were negatively correlated with miR-136-5p. UGT1A7 and ADH7 were the most significantly involved miR-136-5p target genes, and high expression of these genes was correlated with better overall survival and disease-free survival of LUSC patients.

Conclusions

Downregulated miR-136-5p may target UGT1A7 and ADH7 and participate in ascorbate and aldarate metabolism, pentose and glucuronate interconversions, and retinol metabolism. High expression of UGT1A7 and ADH7 may indicate better prognosis of LUSC patients.  相似文献   
69.
裘学丽  陈艳  郎书源  牟荣  张科 《贵州医药》2009,33(5):402-403
目的证实亚洲牛带绦虫的感染与生食猪肝的关系。方法对贵州都匀流行地区屠杀的猪进行调查。结果首次在猪肝上发现亚洲牛带绦虫自然感染的囊尾蚴,猪的自然感染率为8.87%(11/124),共检获囊尾蚴17个,感染强度为1~4个。结论亚洲牛带绦虫的感染与当地村民的生活方式、饮食卫生习惯(生食猪肝等内脏)有关。  相似文献   
70.

Ethnopharmacological relevance

Pancreatic cancer is a devastating cancer that presents late, is rapidly progressive and has current therapeutics with only limited efficacy. Bioactive compounds are ubiquitously present in fruits and numerous studies in vitro are addressing the activity of these compounds against pancreatic cancer, thus studies of specific bioactive compounds could lead to new anti-pancreatic cancer strategies. Australian native fruits have been used as foods and medicines by Australian Aboriginals for thousands of years, and preliminary studies have found these fruits to contain rich and diversified bioactive components with high antioxidant activity. Thus, Australian native fruits may possess key components for preventing or delaying the onset of tumorigenesis, or for the treatment of existing cancers, including pancreatic cancer.

Materials and methods

Numerous databases including PubMed, SciFinder, Web of Knowledge, Scopus, and Sciencedirect were analysed for correlations between bioactive components from fruits and pancreatic cancer, as well as studies concerning Australian native fruits.

Results

In this review, we comprehensively highlight the proposed mechanisms of action of fruit bioactives as anti-cancer agents, update the potential anti-pancreatic cancer activity of various major classes of bioactive compounds derived from fruits, and discuss the existence of bioactive compounds identified from a selection Australian native fruits for future studies.

Conclusion

Bioactive compounds derived from fruits possess the potential for the discovery of new anti-pancreatic cancer strategies. Further, Australian native fruits are rich in polyphenols including some flora that contain unique phenolic compounds, thereby warranting further investigations into their anti-cancer properties.  相似文献   
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