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The severe photogenerated charge carrier recombination and the poor CO2 adsorption capacity are regarded as the two main factors impeding the photocatalytic CO2 reduction performances of metal halide perovskite (PVK) nanomaterials. Herein, a ternary CsPbBr3/Au/PCN-333(Al) hybrid featuring high CsPbBr3 nanocrystal loading, fast charge separation, and good CO2 uptake is designed and fabricated by using Al-based mesoporous metal–organic framework (MOF) particles to encapsulate CsPbBr3 and Au nanocrystals, for synergetic photocatalytic CO2 reduction. A vacuum-assisted pore-filling method is developed to facilitate the permeation of CsPbBr3 precursor solution into PCN-333(Al), which results in a high CsPbBr3 loading of >40 wt%. Detailed heterostructure and photoelectric property analysis reveal that well-dispersed CsPbBr3 and Au nanocrystals inside the MOF matrix can form close contact with each other, which can extract the photogenerated electrons of CsPbBr3 to Au, so as to effectively inhibit the charge recombination and accelerate the CO generation. As a result, the CsPbBr3/Au/PCN-333(Al) hybrid exhibits a significantly improved CO2 reduction performance with the photoelectron consumption yield (Relectron) being 11.5-fold higher than that of single CsPbBr3 nanocrystals and a 100% selectivity for CO. This study demonstrates a new way to design a high-quality PVK/MOF heterostructure catalyst, which may also find application in other photocatalytic reactions. [ABSTRACT FROM AUTHOR]

The social stability risk estimation model of construction projects based on the linear neural network is successfully constructed by using the fuzzy comprehensive evaluation and Monte Carlo stochastic simulation. The risk estimation model has the function of synchronously and reasonably predicting the comprehensive risk value of social stability before and after taking risk prevention and resolution measures. Also, it can realize the automatic risk factors ranking and dynamic self-learning function according to the evaluation value of single risk factors. The analysis of the examples shows that the model provides a strong theoretical support and an effective way to overcome the shortcoming of existing social stability risk estimation methods in risk control and improves the scientific level of the early decision-making of construction projects. [ABSTRACT FROM AUTHOR]

Rational design and facile synthesis of efficient environmentally friendly all-inorganic lead-free halide perovskite catalysts are of great significance in photocatalytic CO 2 reduction. Aiming at photogenerated charge carrier separation and CO 2 reaction dynamics, in this paper, a CsCuCl 3 /Cu nanocrystals (NCs) heterojunction catalyst is designed and synthesized via a simple acid-etching solution process by using Cu 2 O as the sacrificed template. Due to the disproportionation reaction of Cu 2 O induced by concentrated hydrochloric acid, Cu NCs can be deposited onto the surface of CsCuCl 3 microcrystals directly and tightly. As revealed by photoelectrochemical analysis, in situ Fourier transform infrared spectra, etc., the Cu NCs contribute a lot to extracting photoelectrons of CsCuCl 3 to improve the charge separation efficiency, regulating the CO 2 adsorption and activation, and also stabilizing the reaction intermediates. Therefore, CsCuCl 3 /Cu heterojunction exhibits a total electron consumption rate of 58.77 µmol g -1 h -1 , which is 2.9-fold of that of single CsCuCl 3 . Moreover, high CH 4 selectivity of up to 92.7% is achieved, which is much higher than that of CsCuCl 3 (50.4%) and most lead-free halide perovskite-based catalysts. This work provides an ingenious but simple strategy to rationally design cocatalysts in situ decorated perovskite catalysts for manipulating both the catalytic activity and the product selectivity., (© 2023 Wiley-VCH GmbH.)

Objective: The purpose of this study was to develop a comprehensive nomogram for the cancer-specific survival (CSS) of white patients with invasive melanoma at back, posterior arm, posterior neck, and posterior scalp (BANS) sites and to determine the validity of the nomogram by comparing it with the conventional American Joint Committee on Cancer (AJCC) staging system., Methods: This study analyzed the patients with invasive melanoma in the Surveillance, Epidemiology, and End Results (SEER) database. R software was used to randomly divide the patients into training and validation cohorts at a ratio of 7:3. Multivariable Cox regression was used to identify predictive variables. The new survival nomogram was compared with the AJCC prognosis model using the concordance index (C-index), area under the receiver operating characteristic (ROC) curve (AUC), net reclassification index (NRI), integrated discrimination index (IDI), calibration plotting, and decision-curve analysis (DCA)., Results: A novel nomogram was established to determine the 3-, 5-, and 8-year CSS probabilities of patients with invasive melanoma. According to the nomogram, the Age at Diagnosis had the greatest influence on CSS in invasive melanoma, followed by Bone Metastasis, AJCC, Stage, Liver Metastasis, Histologic Subtype, Brain Metastasis, Ulceration, and Primary Site. The nomogram had a higher C-index than the AJCC staging system in both the training (0.850 versus 0.799) and validation (0.829 versus 0.783) cohorts. Calibration plotting demonstrated that the model had good calibration ability. The nomogram outperformed the AJCC staging system in terms of AUC, NRI, IDI, and DCA., Conclusion: This was the first study to develop and evaluate a comprehensive nomogram for the CSS of white patients with invasive melanoma at BANS sites using the SEER database. The novel nomogram can assist clinical staff in predicting the 3-, 5-, and 8-year CSS probabilities of patients with invasive melanoma more accurately than can the AJCC staging system., Competing Interests: YW was employed by Guangzhou Jnumeso Bio-technology Co., Ltd. LZ was employed by Bioland. UW was employed by Meng Yi Centre Limited. WC was employed by Shanghai Aige Medical Beauty Clinic Co., Ltd. (Agge). The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Huang, Yu, Wan, Ming, Situ, Zhu, Jiang, Wu, Huang, Chen, Lyu and Deng.)