Fabrication of three-dimensional hierarchical porous 2D/0D/2D g-CN modified MXene-derived TiO@C: Synergy effect of photocatalysis and HO oxidation in NO removal.

A novel three-dimensional multi-level porous g-CN modified MXene-derived TiO@C aerogel (g-CN/TiO@C aerogel) was synthesized for NO removal. Through SEM analysis, 2D g-CN and 2D TiC nanosheets were constructed into an interconnected macroscopic framework with continuous macropores via ice template. OD TiO nanoparticles uniformly covered 2D C nanosheets with irregular mesopores and macropores in in-situ oxidation of TiC nanosheets by calcination via TEM analysis.

An improved method for quantitative recovery of conductivity using tomographically measured thermoacoustic data.

Noninvasive extraction of tissue conductivity distribution is important in brain imaging and cancer detection. Here we present an improved method that can accurately image tissue conductivity using tomographically measured microwave-induced thermoacoustic data. Our reconstruction algorithm is first tested using simulations, and then validated using tissue phantom experiments where saline-containing tubes are used as target(s) with various target sizes, positions and conductivities.

Risk assessment of water quality using Monte Carlo simulation and artificial neural network method.

There is always uncertainty in any water quality risk assessment. A Monte Carlo simulation (MCS) is regarded as a flexible, efficient method for characterizing such uncertainties. However, the required computational effort for MCS-based risk assessment is great, particularly when the number of random variables is large and the complicated water quality models have to be calculated by a computationally expensive numerical method, such as the finite element method (FEM).

[Dynamic changes of groundwater level and vegetation in water table fluctuant belt in lower reaches of Heihe River: coupling simulation].

Based on the 2006 investigation data in lower reaches of Heihe River, and by using logarithmic normal distribution model, the models about the vegetation cover of Populus euphratica and Tamarix ramossima and the groundwater level in study area were built, and the potential plant of the study area was simulated. The results showed that in the lower reaches of Heihe River, the optimal groundwater level and mean groundwater level for P. euphratica were 2.