Preparation for Graphite Materials and Study on Electrochemical Degradation of Phenol by Graphite Cathodes

Nanographite flake through ultrasound dispersing expanded graphite which got by chemical oxidation and microwave puffing method have been prepared by natural flake graphite. The microstructures of natural flake graphite, expanded graphite and nanographite sheets were characterized by means of SEM, XRD, FTIR and Raman;the cathodes were made by NG, EG and nanographite, respectively;the electrolysis phenol was conducted by the diaphragm cell prepared cathode and the Ti/RuO2 anode. The results showed that the thickness of graphite flake was 18 nm, and the grain size and particle size decreased compared with the NG and EG;Nano-G showed the best electrochemical properties;in the diaphragm electrolysis system with the aeration conditions, the degradation rate of phenol reached 89.5% COD reached 81.3% under 120 min’s electrolysis, which was far above the degradation rate of phenol of EG cathode and NG cathode.

Evaluation of Uncertainty in the Determination of Ozone Concentration in the Air by Sodium Indigo Disulfonate Spectrophotometry

The uncertainty of the determination of ozone concentration in the air at a workplace by sodium indigo disulfonate spectrophotometry was evaluated.The results show that the expanded uncertainty of ozone concentration U was 0.016 mg/m^(3),and the main factor affecting the measurement uncertainty of ozone concentration was the uncertainty introduced during sample collection.

Protective effect of hydroxysafflor yellow A on Parkinson cell model and its network pharmacology analysis

As an effective component of safflower,hydroxysafflor yellow A(HSYA)has the effect of promoting blood circulation,removing blood stasis,and relieving pain,and it has a certain effect on blood stasis and wind-induced Parkinson‘s disease(PD).However,the current research mostly involves a single intervention mechanism,which is not conducive to the clinical transformation of this type of drugs.In the present study,rotenone was used to construct a PD cell model,and the protective effect of HSYA on the PD cell model was evaluated by cell viability and mitochondrial membrane potential.TTD database was used to query PD-related therapeutic targets,Swiss Target Prediction database to query HSYA-related targets,STRING database was used to search the gene interaction relationship of common targets,and ClueGO pathway was adopted to enrich and analyze common targets and their interaction targets,as well as to explore the comprehensive intervention mechanism.The results showed that rotenone could successfully establish the PD cell model,and HSYA had significant protective effect on PD cell model.Through the network pharmacological analysis,36 PD-related therapeutic targets and 88 HSYA-related targets were queried.The common targets of PD and HSYA were FKBP1A,HTR1A,SLC6A4 and SLC6A3.To enrich four common targets and their interaction targets through REACTOME pathway,eight cell signal pathways were obtained,and six cell biological processes were obtained through biological process pathway enrichment.