Precision and NDCG for the MQ2007 and MQ2008 datasets.

<p>Precision and NDCG for the MQ2007 and MQ2008 datasets.</p

MAP for the MQ2008 dataset.

<p>MAP for the MQ2008 dataset.</p

An example line in the MQ2007 dataset.

<p>An example line in the MQ2007 dataset.</p

MAP for the MQ2007 dataset.

<p>MAP for the MQ2007 dataset.</p

Hypotheses testing on dataset MQ2007 (a)–(c) and MQ2008 (d)–(f).

<p>Hypotheses testing on dataset MQ2007 (a)–(c) and MQ2008 (d)–(f).</p

Highly Reusable and Environmentally Friendly Solid Fuel Material Based on Three-Dimensional Graphene Foam

It is a great challenge to find a reusable solid fuel material with both high absorption capability for organic liquids and clean use. In this work, a highly reusable and environmentally friendly solid fuel material based on three-dimensional graphene foam (3D-GF) was prepared, with high absorption capability for organic liquid fuels up to over 900 times its own weight and outstanding fire resistance. This 3D-GF shows high combustion efficiency, exceeding 99%. A rather clean burning was observed without toxic gases and soot particles released, as in the case of the conventional solid fuel materials. More importantly, the reusability and mechanical stability of the material are kept almost unchanged after 10 cycles of adsorption–combustion with organic liquid fuels

Multifunctional Bicontinuous Composite Foams with Ultralow Percolation Thresholds

Integrating ultralight weight and strong mechanical performance into cellular monolith is a challenge unresolved yet. Here, we propose a skeleton-assisted self-assembly method to design ultralight bicontinuous composite foams (BCCFs) with high mechanical robustness and ultralow percolation thresholds. Polymer foam was employed as the skeleton to support assembled graphene networks, forming BCCFs with a high tensile strength (∼80 kPa) and breakage elongation (>22.2%). The paraffin and poly­(dimethylsiloxane) infiltrated BCCFs show a record low percolation threshold of 0.006 vol % and a relatively high electrical conductivity of 0.81 S m^–1 at a low graphene content of 0.216 vol %. The BCCFs demonstrate high and adjustable microwave-absorbing (MA) properties. The effective absorption bandwidth (reflection loss ≤ −10 dB) for BCCFs with a low graphene loading of 3.4 mg cm^–3 achieves 9.0 GHz at a thickness of 4 mm, and it further covers 13.6 GHz considering the adjustability of preferred absorption band. The BCCFs with an extremely low graphene load of 0.14 mg cm^–3 were further used for durable and efficient oil adsorption, which can adsorb >60 times their own weight. The facile fabrication of bicontinuous composite foams opens the avenue for practical applications of high-strength, multifunctional, and productive graphene-based foams

Multifunctional Bicontinuous Composite Foams with Ultralow Percolation Thresholds

Integrating ultralight weight and strong mechanical performance into cellular monolith is a challenge unresolved yet. Here, we propose a skeleton-assisted self-assembly method to design ultralight bicontinuous composite foams (BCCFs) with high mechanical robustness and ultralow percolation thresholds. Polymer foam was employed as the skeleton to support assembled graphene networks, forming BCCFs with a high tensile strength (∼80 kPa) and breakage elongation (>22.2%). The paraffin and poly­(dimethylsiloxane) infiltrated BCCFs show a record low percolation threshold of 0.006 vol % and a relatively high electrical conductivity of 0.81 S m^–1 at a low graphene content of 0.216 vol %. The BCCFs demonstrate high and adjustable microwave-absorbing (MA) properties. The effective absorption bandwidth (reflection loss ≤ −10 dB) for BCCFs with a low graphene loading of 3.4 mg cm^–3 achieves 9.0 GHz at a thickness of 4 mm, and it further covers 13.6 GHz considering the adjustability of preferred absorption band. The BCCFs with an extremely low graphene load of 0.14 mg cm^–3 were further used for durable and efficient oil adsorption, which can adsorb >60 times their own weight. The facile fabrication of bicontinuous composite foams opens the avenue for practical applications of high-strength, multifunctional, and productive graphene-based foams

Observation of nude mice full-thickness defect model.

<p>(A) Observation of nude mice full-thickness defect model dressed with type I collagen only, C-CBM, or ESCs-C-CBM at 1 d, 1 w, 4 w, and 10 w. Type I collagen group shows that wounds are much slower to heal. Group C-CMB shows the repaired wound skin in the control group was relatively thin and heliotrope with a tendency to bleed; Group ESCs-C-CMB shows the repaired wound in the experimental group was relatively thick and red with re-epithelialization. Scale bar = 1cm. (B) Formation of epidermal nests on the wound surface repaired by epidermal stem cells- collagen-chitin biomimetic (ESCs-C-CBM) membrane compared with C-CBM. Paraffin and stained with hematoxylin and eosin (H&E) stain. Yellow arrows point to chitin and blue arrows point to epidermal nests increased in the ESC-C-CBM group at 2–10 w (100X).</p

Primers used in quantitative real-time PCR.

<p>Primers used in quantitative real-time PCR.</p