Abstract.In order to better promote the healthy and sustainable development of green economy in Anhui Province, The ultra-efficiency DEA-SBM model was used to evaluate the green economic efficiency of 16 cities in Anhui province from 2005 to 2020, Based on this basis, Select the inputs of capital, energy, labor, land resources and water resources from the input and output dimensions through the relevant literature, And the expected output and non-period output as indicators to establish a green economic efficiency index evaluation system for the evaluation of green economic efficiency in Anhui … Read more →

Abstract.After flowing into China along the Silk Road, glass has been circulating in the local territory for thousands of years. In the process of smelting, craftsmen of successive dynasties added different cosolvents, and the composition structure has its own characteristics. By studying the composition and material changes of ancient glass relics, it can provide theoretical support for archeologists to analyze the background of glass unearthed relics, which is of great research value.In this paper, the composition identification and analysis of ancient glass components were taken as the research … Read more →

Abstract.In this paper, the ecotoxicology research method combines field investigation and indoor simulation experiment. Sampling and analysis of heavy metal pollution of solid soil samples from lead-acid battery factory, identified Pb, Cd and Cr as the pollution research objects, discussed the biological reaction mechanism of Eiseniafetida under the stress of heavy metals Pb, Cd and Cr, and obtained the results. The results of the lethal and sublethal effects of Pb, Cd and Cr on Pb, Cd and Cr and the effect of biomarkers. The main research results are as follows: In the acute toxicity test of Aisheng … Read more →

Abstract.Objective: To study the clinical effects of negative pressure closed drainage (VSD) in the treatment of orthopedic trauma as well as infected trauma. Methods: Fifty patients with orthopedic trauma and infected wounds admitted to hospital from March 2017 to May 2019 were selected and randomly grouped, and the various clinical effects of the two groups were compared. Results: All clinical effects of patients in the observation group were better than those in the control group (P < 0.05). Conclusion: The treatment of orthopedic trauma and infected trauma patients by VSD technology can improve the … Read more →

Abstract.Food is the most basic requirement for human survival and development, and despite advancements in its large-scale production, the demand for food remains unmet. In many countries, the food industry has become one of the pillar industries. Safety is the most crucial aspect of food and also the primary criterion for the selection of food by consumers. In recent years, with the frequent occurrence of incidents related to food safety, particularly after the coronavirus disease-2019 pandemic, studies on food safety have been increasing rapidly. For an in-depth analysis of the progress of food … Read more →

Abstract.Intelligent security systems is significant to protect properties. An intelligent security system is designed based on Hi3861 chip. The system is developed using Harmony OS. Sensors are used to detect different information like temperature, light intensity, suspicious object and combustible gas. A light supplement led, motor fan, and buzzer are also used for early warning and effective adjustment. After debugging, the system can realize intelligent security. Read more →

Abstract.For the complex problems of invoice occlusion, invoice deformation, dark environment, excessive noise and so on in invoice detection, this paper proposes an improved YOLOv5s invoice detection and classification method. In order to improve the generalization ability of the model, the attention mechanism is introduced to improve the feature extraction ability of the network. By adding cavity convolution to the YOLOv5S backbone network and the neck network, and adding context transformation network to the backbone network, the robustness of the model is improved. For model output, flexible … Read more →

Abstract.Data classification algorithm is the core content of big data mining. Its main function is to extract valuable knowledge and information,analyze the characteristics of all kinds of information, and provide data basis for further research. With the wide application of data mining technology, data classification algorithms continue to emerge and gradually improve. The classic classification algorithms include decision tree classification algorithm, naive Bayes algorithm, support vector machine classification algorithm, artificial neural network classification algorithm, fuzzy pattern tree (FPT) … Read more →

Abstract.In this experiment, the lactic acid bacteria ZH-7 with the strongest ability to produce exopolysaccharides were isolated and screened from the sourdough, and after 16s RNA identification, it was determined to be a Class I lactic acid bacterium (ZH-7), and the yield of its exopolysaccharides was determined by phenol-sulfuric acid method. The effects of fermentation characteristics and steamed bun quality were explored by combining the fermentation characteristics of dough and the quality of steamed buns by combining different lactic acid bacteria (ZH-3), Class I lactic acid bacteria (ZH-7) and … Read more →

Abstract.With the deepening reform of education and the proposition of key competence, many disciplines have carried out reforms to improve students' key competence. In order to improve students' reading ability, thinking ability, writing ability and many other qualities, senior high school English has added a new form in the English exam, continuation writing, so that students can complete the subsequent writing practice on the basis of reading. Writing, as an important and foundational language competency, has always been a very important part of the training at every stage of English learning. … Read more →

Abstract.A phosphorus-containing polyol (P-polyol) was synthesized with diethyl ethylphosphate (DEEP) and trihydroxymethyl phosphane oxide (THPO) via transesterification reaction, which was introduced into rigid polyurethane foam (RPUF) by in-situ chemical reaction. The optimum synthesis conditions of P-polyol were investigated as follows: butyldihydroxychlorostannane as catalytic agent, the molar ratio of DEEP to THPO was 1:1 at 120-170℃, the yield was over 85%, the apparent viscosity of P-polyol was 1400 MPa.S with the hydroxyl value about 480 mg KOH/g  and the acid value about 100 mg KOH/g. With the … Read more →

Abstract.A new type of food slicing machine was developed to solve the problems of high cost and high energy consumption of existing food slicing machines. The slicer can achieve rapid cutting of various foods, with the advantages of small vibration, low energy consumption, simple operation, safety and efficiency, and uniform cutting. Read more →

Abstract.The impeller is a kind of contain complex surface more difficult machining parts, often through the UG, Pro/E and CAM software production parts processing program. In this paper, ME2020 domestic CAXA software as a platform, the impeller machining method.In order to improve the machining efficiency of the impeller, and gives the VERICUT software optimization program method. Read more →

Abstract.Aiming at the exploring of vegetation coverage in Shandong province, this paper provided a method based on remote sensing. Firstly, the Landsat8 OLI image was selected to be the data resources, and then, the remote sensing image of Shandong Province was separated from the original image by using vector data as a tool. And then, Using the method of band match, the NDVI value of Shandong Province was calculated, and then the FVC value of Shandong Province was obtained using the formula. The FVC distribution map of Shandong Province was plotted using resampling method. Finally, the vegetation … Read more →