Green credit and high-quality sustainable development of banks.

The impact of green credit on banks has been widely verified. This paper systematically combs the internal mechanism of the impact of green credit on high-quality sustainable development of banks and studies the relationship between green credit and high-quality sustainable development of banks by using unbalanced panel data of Chinese listed banks from 2007 to 2019. The results show that green credit will significantly promote high-quality sustainable development of banks, which remains valid after controlling for relevant variables and robustness test. The further test results show that the impact of green credit on high-quality sustainable development of banks will be affected by green environment supervision and monetary policy. Green environment supervision and loose monetary policy promote the positive impact of green credit on high-quality sustainable development of banks. The heterogeneity test results show that the impact of green credit on high-quality sustainable development of banks is significantly different among banks with different business scope and different size, and the positive impact of green credit on high-quality sustainable development of small-scale banks and regional banks is more significant. This paper enriches the research of the impact of green credit on banks.

A silicon-based PbSe quantum dot near-infrared photodetector with spectral selectivity.

Traditional photodetectors usually respond to photons larger than the bandgap of a photosensitive material. In contrast to traditional photodetectors for broad-spectrum detection, the currently reported PbS/PMMA/PbSe CQD silicon-based photodetectors can detect spectrally selective light sources. This is attributed to two layers with specific functions, a filter layer on top and a photosensitive layer in contact with the silicon channel. Each of the target sources of the device has a selectivity factor of more than 10 against non-target sources. The s-PD (selective photodetector) has three significant advantages: the ability to tunably adjust the detectable spectral range by easily adjusting the size of QDs. The second is using a new architecture to achieve a high-performance selective photodetector, and finally, the ease-of-integration with silicon. The above features enable the device to meet the needs of particular fields such as secure communication, surveillance, and infrared imaging.

Pricing for a basket of LCDS under fuzzy environments.

This paper looks at both the prepayment risks of housing mortgage loan credit default swaps (LCDS) as well as the fuzziness and hesitation of investors as regards prepayments by borrowers. It further discusses the first default pricing of a basket of LCDS in a fuzzy environment by using stochastic analysis and triangular intuition-based fuzzy set theory. Through the 'fuzzification' of the sensitivity coefficient in the prepayment intensity, this paper describes the dynamic features of mortgage housing values using the One-factor copula function and concludes with a formula for 'fuzzy' pricing the first default of a basket of LCDS. Using analog simulation to analyze the sensitivity of hesitation, we derive a model that considers what the LCDS fair premium is in a fuzzy environment, including a pure random environment. In addition, the model also shows that a suitable pricing range will give investors more flexible choices and make the predictions of the model closer to real market values.

Experimental investigation of ash deposits on convection heating surfaces of a circulating fluidized bed municipal solid waste incinerator.

Incineration of municipal solid waste (MSW) is a waste treatment method which can be sustainable in terms of waste volume reduction, as well as a source of renewable energy. During MSW combustion, increased formation of deposits on convection heating exchanger surfaces can pose severe operational problems, such as fouling, slagging and corrosion. These problems can cause lower heat transfer efficiency from the hot flue gas to the working fluid inside the tubes. A study was performed where experiments were carried out to examine the ash deposition characteristics in a full-scale MSW circulating fluidized bed (CFB) incinerator, using a newly designed deposit probe that was fitted with six thermocouples and four removable half rings. The influence of probe exposure time and probe surface temperature (500, 560, and 700°C) on ash deposit formation rate was investigated. The results indicate that the deposition mass and collection efficiency achieve a minimum at the probe surface temperature of 560°C. Ash particles are deposited on both the windward and leeward sides of the probe by impacting and thermophoretic/condensation behavior. The major inorganic elements present in the ash deposits are Ca, Al and Si. Compared to ash deposits formed on the leeward side of the probe, windward-side ash deposits contain relatively higher Ca and S concentrations, but lower levels of Al and Si. Among all cases at different surface temperatures, the differences in elemental composition of the ash deposits from the leeward side are insignificant. However, as the surface temperature increases, the concentrations of Al, Si, K and Na in the windward-side ash deposits increase, but the Ca concentration is reduced. Finally, governing mechanisms are proposed on the basis of the experimental data, such as deposit morphology, elemental composition and thermodynamic calculations.