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Background Graded diagnosis and treatment is one of the main goals of medical reform. In 2015, the General Office of the State Council issued the"Guiding Opinions on Promoting the Construction of Graded Diagnosis and Treatment System" (Guo Ban Fa[2015]No. 70), which stated that in 2017, the proportion of diagnosis and treatment in grassroots medical institutions was over 65.0%, but that proportion was 54.2% that year, and in recent years, it has shown an overall downward trend. Previous literature has mostly focused on the demand side (patients) for research, while as one of the suppliers of graded diagnosis and treatment, there have been few surveys on the willingness of general practitioners to participate in graded diagnosis and treatment. Objective This article aims to take Suzhou City as an example to investigate and study the willingness of general practitioners to participate in graded diagnosis and treatment, analyze its influencing factors, and provide suggestions to improve the willingness of general practitioners to participate in graded diagnosis and treatment, providing reference for formulating policies related to graded diagnosis and treatment. Methods In June 2022, a multi-stage convenient sampling method was adopted to select 1 451 general practitioners from 175 grassroots medical and health institutions (hereinafter referred to as grassroots institutions) in 4 counties and 6 districts of Suzhou City. A self-developed survey questionnaire was used to conduct the survey. The questionnaire includes the survey of general practitioners' basic situation (demography characteristics), survey of general practitioners' willingness to participate in hierarchical diagnosis and treatment (this part of the questionnaire is based on the expanded model of influencing factors of general practitioners' willingness to participate in hierarchical diagnosis and treatment, which is a fusion model of theory of planned behavior (TPB) and technology acceptance model (TAM) combined with Document retrieval and interview collection content). According to the survey results, use structural equation model SEM analysis to test the influencing factors of general practitioners' willingness to participate in graded diagnosis and treatment, expand the model's fit, and determine the model's fit effect. Exploratory factor analysis was used to calculate the weight (influence) of each influencing factor of general practitioners' willingness to participate in graded diagnosis and treatment, and to build a Relational model of influencing factors of general practitioners' willingness to participate in graded diagnosis and treatment. Results One thousand four hundred and fifty-one general practitioners participated in this questionnaire survey, and 1 302 valid questionnaires were collected, with an effective rate of 89.73%. The expanded model of influencing factors on the willingness of general practitioners to participate in graded diagnosis and treatment is well fitted. In the influencing factors of general practitioners' willingness to participate in graded diagnosis and treatment, participation attitude, subjective norms, and perceived behavioral control jointly affect the willingness of general practitioners to participate in graded diagnosis and treatment, with weights of 46.22%, 9.75%, and 44.02%, respectively. Perceived benefits and perceived usefulness jointly explain participation attitudes, with weights of 15.14% and 31.08% respectively. Disposable resources and expected resistance jointly explain perceptual behavioral control, with weights of 27.07% and 16.95%, respectively. Conclusion The degree of recognition of the medical service capabilities of higher-level hospitals by general practitioners, the complexity of referral procedures, and the degree of openness of medical resources from higher-level hospitals to general practitioners have a significant impact on the willingness of general practitioners to participate in graded diagnosis and treatment. It is recommended to strengthen communication and interaction among personnel within the medical association at the administrative, organizational, and personal levels, and use information technology to simplify referral processes and procedures Encourage higher-level hospitals to provide targeted and quantitative access to medical resources such as outpatient number sources and ward beds for general practitioners, and take various measures to increase their willingness to participate in graded diagnosis and treatment.

In this study,polytetrafluoroethylene(PTFE), a commonly used coalescence oil removal material, was selected and loaded with polyaniline(PANI) on its surface to successfully construct a superhydrophobic fiber material. It was then woven with hydrophilic cotton(Cot) fibers to form a superhydrophobic/hydrophilic heterogeneous material(PANI/PTFE-Cot) for the treatment of oily wastewater. The results indicated that PANI with micro-nano structure was successfully loaded on PTFE fibre, and the dosage of aniline and reaction temperature affected the hydrophobicity of PANI/PTFE. When the reaction temperature was 25 ℃ and the dosage of aniline was 0.2 mol/L,the water contact angle reached its maximum of 154°. Compared with that of PTFE,the quality factor of 2∶1 PANI/PTFE-Cot increased 46.7%.

Aimed at the uncertainty of equipment quantity and input, the defective products and its rework in the manufacturing process are investigated. Considering the influence of the number or input of the devices on system reliability, a manufacturing system reliability evaluation model is established based on stochastic flow network. The homogeneous Markov process is used to analyze the state of system degradation and maintenance. Considering the constraint of system reliability, a systematic maintenance model is proposed to minimize maintenance cost. The results of the numerical experiment demonstrate that the proposed model is effective and advanced.

Combining adsorption with photocatalysis is a strategy to utilize renewable sunlight as for adsorbents regeneration. Herein, a three-dimensional biochar aerogels (CA) was prepared by hydrothermal method using glucose as raw material, and a semiconductor photocatalyst Bi2WO6 (BWO) was loaded on its surface to construct a composite adsorbent CA/BWO. The results showed that when the bed height of the CA/BWO was 6 cm and the flow rate was 1 mL/min, the adsorption efficiency of 10 mg/L phenol (PE) reached 80%. The removal of PE by CA/BWO reached 80% in all five regeneration processes, while CA almost lost its adsorption capacity after three regenerations, indicating the excellent regeneration ability and stability of CA/BWO. It was found that the PE adsorption on CA/BWO conformed to the Langmuir isotherm model and quasi-second-order adsorption kinetics, indicating the adsorption belonged to monolayer chemisorption. Moreover, the presence of natural organic compounds (HA and FA) promoted the adsorption of PE by CA/BWO, which was due to the partial active sites provided by organic compounds adsorbed on CA/BWO. Finally, the penetration test results showed that the synthesized composites have good reusability. These showed that CA/BWO has great potential application value. [ABSTRACT FROM AUTHOR]