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In the latest decade, two-dimensional (2D) p-d conjugated metal organic frameworks (MOFs) constructed from metal ions with square-planar coordination geometry and benzene-or triphenylenederived ligands with ortho-disubstituted N, O, or S donor atoms have received great research interests because of their exceptional physical properties and promising applications. New MOFs of this class are constantly being reported, but 2D metal bis(diselenolene) MOFs based on organic ligands with ortho-disubstituted Se donor atoms have not been synthesized. Herein, a Lewis-acid-induced dealkylation protocol is introduced to the synthesis of arenepolyselenols and related coordination polymers. A triphenylene-derived diselenaborole compound is synthesized and employed as precursor reagent for the synthesis of 2,3,6,7,10,11-triphenylenehexaselenol (H 6 TPHS) and the first conductive metal organic framework namely Co-TPHS based on triphenylenehexaselenolate (TPHS 6À). Co-TPHS exhibits porous honeycomb 2D structure and electrically conductive and glassy magnetic properties.

Drawing on a dataset covering a large number of randomly sampled villages across China, the present paper examines the issue of residential solid waste management service provision in rural China. Using a logistic model we evaluate the impacts of different factors on service provision at the village level with regard to residential solid waste disposal. These factors include the environmental pressures caused by residential solid waste generation, the financial capacity of the Villagers' Committee, village elections and the individual characteristics of village heads. We find that living density, village per capita income, the ratio of irrigated land, and the per capita profit submitted by village enterprises to the Villagers' Committee all have positive impacts on service provision. Moreover, village heads who are popularly elected by villagers are more likely to provide services that satisfy voters' demands. Copyright (c) 2008 The Authors Journal compilation (c) 2008 Institute of World Economics and Politics, Chinese Academy of Social Sciences.

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ObjectiveTo investigate the interaction of non-coding RNAs (ncRNAs) in hepatocellular carcinoma.MethodsWe compared the ncRNAs and mRNAs expression profiles of hepatocellular carcinoma and adjacent tissue by microarray and RT-PCR. The relationship between different ncRNAs and mRNA was analyzed using bioinformatics tools. A regulatory model of ncRNAs in hepatocellular carcinoma cells was developed.ResultsA total of 1,704 differentially expressed lncRNAs, 57 miRNAs, and 2,093 mRNAs were identified by microarray analyses. There is a co-expression relationship between two ncRNAs (miRNA-125b-2-3p and lncRNA P26302). Bioinformatics analysis demonstrated cyclin-dependent kinases 1 and CyclinA2 as potential targets of miR-125b-2-3p and Polo-like kinase 1 as potential target of lncRNAP26302. All three gene are important components in the G2/M phase of cell cycle. Subsequently real-time polymerase chain reaction (PCR) studies confirmed these microarray results.ConclusionMiR-125b-2-3p and lncRNAP26302 may affect the G2/M phase of the cell cycle through the regulation of their respective target genes. This study shows a role of ncRNAs in pathogenesis of hepatocellular carcinoma at molecular level, providing a basis for the future investigation aiming at early diagnosis and novel treatment of hepatocellular carcinoma.