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Many of the 1.5 billion users of social media send or receive messages or post or access new content every day. The personal, social, political and business implications of this volume of activity are profound. Extracting useful information from this activity presents a challenge for scientists, technologists and also scholars in other disciplines. Taking the data deluge from on-line social media,...
We review our recent results in the development of nanostructured photonic metamaterials which provide unprecedented levels of active (nonlinear, switchable, tunable) control over light on the sub-wavelength scale.
For treating the coal mining subsided area, coal gangue is usually used to filling the subsided area and topsoil will be covered to reclaim, then the abandoned land will be used to plant crops, but different topsoil thickness will influence the nutrient content and the yield of crop. Xinzhuangzi coal mine reclamation land is chosen and different thickness topsoil is sampled to analyze the soil quality...
For investigating the different thickness topsoil quality of reclaimed land filled with fly ash and guide of reclaimed work can be given, Datong reclaimed land is chose for testing the topsoil physical and chemical properties, the topsoil thickness are 30cm, 50cm, 60cm respectively. The pH value, organic matter, hydrolysable nitrogen, available phosphorus and available potassium are detected and result...
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