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Diabetic wounds (DWs) are a common complication of diabetes mellitus; DWs have a low cure rate and likely recurrence, thus affecting the quality of patients' lives. As traditional therapy cannot effectively improve DW closure, DW has become a severe clinical medical problem worldwide. Unlike routine wound healing, DW is difficult to heal because of its chronically arrested inflammatory phase. Although mesenchymal stem cells and their secreted cytokines can alleviate oxidative stress and stimulate angiogenesis in wounds, thereby promoting wound healing, the biological activity of mesenchymal stem cells is compromised by direct injection, which hinders their therapeutic effect. Hydro-gels form a three-dimensional network that mimics the extracellular matrix, which can provide shelter for stem cells in the inflammatory microenvironment with reactive oxygen species in DW, and maintains the survival and viability of stem cells. This review summarizes the mechanisms and applications of stem cells and hydrogels in treating DW; additionally, it focuses on the different applications of therapy combining hydrogel and stem cells for DW treatment.

The catalytic pyrolysis pathways of carbonyl compounds in coal were systematically studied using density functional theory (DFT), with benzaldehyde (C6H5CHO) employed as a coal-based model compound and ZnO, γ-Al2O3, and CaO as catalysts. The results show that the products of both pyrolysis and catalytic pyrolysis are C6H6 and CO. However, the presence of any of the catalysts changes the reaction pathway and reduces the energy barrier, indicating that these catalysts promote C6H5CHO decomposition. Graphical abstract The presence of catalysts changes the reaction pathway and the energy barrier decreases in the order Ea (no catalyst)> Ea (CaO)> Ea (γ-Al2O3)> Ea (ZnO), indicating that these catalysts promote C6H5CHO decomposition.

How to give the corresponding nursing strategies for the risk factors of death is the focus of the current clinical nursing of AMI. Therefore, this study aims to determine causes of death in patients with Acute Myocardial Infarction (AMI) and the nursing strategies. The clinical data of 127 AMI patients treated in our center from January 1st, 2010 to December 31st, 2014, categorized into observed group and control group according to psychological counselling, were retrospectively analysed. Total of 68 patients were enrolled in observed group with 59 patients enrolled in control group. 48 (70.6%) of observed group had complicated infection and 43 (72.9%) of control group, respectively. The mortality of observed group was 17.65%, lower than 33.90% of control group (p=0.035). Multivariate logistic regression analysis indicated that age (≥ 70 y), less-awareness, complicated infection and accompanying conditions such as cardiogenic shock might be high-risk factors of AMI-induced death. In conclusion, AMI deaths are associated with diverse causes. Active and effective nursing approaches, such as psychological counselling, may help to decrease the risk of AMI deaths. The corresponding nursing strategies for these death-related factors included tailored patient education, psychological counselling, concentrated nursing care, reasonable nursing resource planning, continuous ECG monitoring and close observation.

The catalytic pyrolysis pathways of carbonyl compounds in coal were systematically studied using density functional theory (DFT), with benzaldehyde (C

A new MoO3/SO4 2−-TiO2 catalyst was prepared by a conventional impregnation of SO4 2−/TiO2 as carrier with an aqueous solution of ammonium molybdate and used for the synthesis of transesterification of dimethyl carbonate (DMC) with phenol. A series of MoO3/SO4 2−-TiO2 catalysts with different MoO3 loadings were investigated and characterized using X-ray diffraction (XRD), Fourier transform infrared spectrometer (FTIR), NH3-temperature programmed desorption (NH3-TPD) and X-ray photoelectron spectroscopy (XPS). The results show that MoO3 loading is related to the activity of transesterification reaction. With the increase of MoO3 loading, the activity of transesterification reaction increases. The sulfur species in the catalyst have an influence on the molybdenum species, and lead to an increase in the electropositive of molybdenum, which promotes the catalytic activity of MoO3/SO4 2−-TiO2. Among the series of catalysts prepared, MoO3/SO4 2−-TiO2 with 10% MoO3 and 823 K calcinated is found to be the most active catalyst for transesterification reaction. Under the reaction conditions of 453 K and 12 h, the conversion of DMC is 30.5 %, and the yields of MPC and DPC reach 21.2 % and 8.7 %, respectively.