Frontiers of Engineering and Scientific Research最新文献

{"title":"A review of the effects of typical biogeochemical and hydrogeological features on the natural attenuation of soil petroleum contaminants","authors":"Xinyu Shi, Xiujun Guo","doi":"10.56028/fesr.2.2.1.2024","DOIUrl":"https://doi.org/10.56028/fesr.2.2.1.2024","url":null,"abstract":"Oil spills in soil can form source areas of contamination that are ecologically hazardous in the long term. The natural process by which the concentration, toxicity and mobility of petroleum contaminants in soil decrease under the combined effects of biochemistry and other aspects without human interference is called natural attenuation. This paper provides a systematic review of the natural attenuation characteristics of petroleum contaminants in soil and its research tools, focusing on the typical biogeochemical and hydrogeological characteristics of the site, and describes the influence of both on the natural attenuation process of contaminants in soil and its mechanism. It also clarifies the influence of petroleum properties, sediment types, organic matter changes, photo-oxidation reactions and microorganisms on the natural attenuation of the source area, and summarises the relevant indicators that can characterise the natural attenuation of petroleum contamination in the source area; at the same time, it outlines the various types of prediction methods of natural attenuation processes, and points out the focus and difficulties of the multidisciplinary fusion of the research directions and the multi-data drive, and finally puts forward a proposal for the study of natural attenuation of petroleum in soils. Finally, the research on the natural attenuation of soil oil pollution source area is proposed. Overall, due to the complexity of organic matter, mineral and microbial components, and the inhomogeneity of hydrogeological conditions, the study of the influence of the intrinsic properties of the site on the natural attenuation of pollutants needs to be further strengthened, and this paper focuses on the identification of the spatial and temporal dynamics of the natural attenuation of pollutants, and the deepening of the understanding of the interaction mechanisms between typical biogeochemical and hydrogeological conditions of the site and the pollutants.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"139 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141114651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Virtual reality and augmented reality teaching human-computer interaction technology application","authors":"Kejie Wang","doi":"10.56028/fesr.1.3.1.2023","DOIUrl":"https://doi.org/10.56028/fesr.1.3.1.2023","url":null,"abstract":"Virtual reality, as the basic content of interpersonal interaction application research and practical exploration, has been widely concerned in the field of education, which can not only create a new learning interaction mode for students, but also understand and analyze theoretical skills in the immersive. Therefore, after understanding the basic concepts of virtual reality and augmented reality, this paper mainly studies the application ways of teaching interpersonal interaction technology according to the reform needs of the current education field.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121237948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Case Report: Complete Remission of a Patient with Acute-on-chronic Liver Failure with Rare Hepatic Encephalopathy and Fever of Unknown Origin Treated with Anti-infective Therapy Combined with Psychotherapy After Artificial Liver Support System","authors":"Yan Bo, Rengaowa Sha, Yuanjie Jiang, Haodong Yu","doi":"10.56028/fesr.1.2.1.2023","DOIUrl":"https://doi.org/10.56028/fesr.1.2.1.2023","url":null,"abstract":"The theme of this report is incredible psychological therapy's inspiration for fever of unknown origin (FUO). We analyzed this incredible phenomenon through psychological immunity, liver immunity, inflammation, etiology, diagnostic methods, and treatment strategies. A man, 44 years old, was dyed for more than 40 days due to abdominal distension with skin and scleral yellow, and feathers accompanied him for four days to enter the hospital. Hepatitis virus test shows HBV infection. HBV DNA detection shows negative. The detection of the respiratory tract nine-fold, tuberculosis, anemia, and gut-to-club ratio all show negative. Due to the weakness of the patient's body, we cannot cooperate with more examinations. We use blood specimens to monitor and analyze for 25 days. In short, this is a case of chronic-acute liver failure, manic, and fever, likely to be an FUO cause in terms of the treatment plan, general treatment, artificial liver treatment, surgical treatment, anti-infection therapy, and psychotherapy. The patient reached the common treatment goal after 25 days of treatment. This report aims to provide psychotherapy programs and clinical characteristics for patients with chronic-acute liver failure, manic, and FUO and provide inspirational thinking strategies for long-term blood specimen examination. The potential mechanism of psychological fever is immune disorders, and the decline in the concentration of immunoglobulin A and E may be a direct factor.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131374961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on Weld Defect Detection and Evaluation Technology based on Deep Learning","authors":"Hanlin Geng, Zhaohui Li, Yuanyuan Zhou","doi":"10.56028/fesr.1.1.1.2023","DOIUrl":"https://doi.org/10.56028/fesr.1.1.1.2023","url":null,"abstract":"Aiming at the problems of low efficiency and strong subjectivity in the current detection of weld defects by radiographic imaging technology, an object detection method of weld defects based on multi-channel fusion convolutional neural network is proposed. In this method, the images of weld defects are encoded and input into multiple feature extraction channels formed by parallel fusion of CNN. After that, the extracted features are fused with full connection layer and the feature vectors are output. Finally, the final output is obtained by Softmax for classification. The proposed method is verified by weld defect images in actual production. The experimental results indicate that the mAP of the multi-channel fusion convolutional neural network reaches 76.37%, and the detection accuracy of weld defects is higher than that of other network such as ResNet-50 and VGG-16. The proposed method can be applied to X-ray intelligent detection of weld defects and other scenarios.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128944671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic significance of CT quantitative detection in chronic lung disease","authors":"Hao Chen","doi":"10.56028/fesr.1.3.24","DOIUrl":"https://doi.org/10.56028/fesr.1.3.24","url":null,"abstract":"Objective To explore the diagnostic value of CT quantitative detection in chronic obstructive pulmonary disease (COPD). Methods A total of 113 patients with suspected COPD who were hospitalized in an outpatient department of a hospital from January 2018 to December 2020 were selected as the subjects of study. All patients underwent CT quantitative examination, lung function and other related examinations. The results of lung function examination were used as the gold standard to detect COPD, and the application of CT quantitative examination in the diagnosis of COPD was analyzed. Results Among 157 suspected patients with C0PD, 112 (71.34%) were COPD and 20 (12.74%) were bronchial asthma; The forced expiratory volume (FEV,), forced vital capacity (FVC) and FEV,/FVC value, mean lung density (MLD) and lumen area (LA) in the first second of COPD group were lower than those in the non-COPD group. The respiratory biphasic voxel index<- 950HU lung volume accounted for the percentage of total lung volume [VI-950 (%)] and the percentage of wall area (WA%) in the COPD group were higher than those in the non-COPD group, and the difference was statistically significant (P<0.05); The results of bivariate Spearson correlation test showed that FEV,/FVC were negatively correlated with VI-950 and WA% (r<0, P<0.05), and positively correlated with MLD and LA (r>0, P<0.05); The ROC curve results show that the AUC of quantitative detection of VI-950, MLD, LA, WA% for COPD by rCT is more than 0.7, which has high predictive value. When the best threshold is obtained, the best predictive value can be obtained. Conclusion CT quantitative detection has high diagnostic efficiency in the differential diagnosis of COPD, and can provide objective reference for clinical early examination.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115320410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Improved Design of a Mist Dust Removal Device for Coal Mining","authors":"Xiayi Wu","doi":"10.56028/fesr.1.3.1","DOIUrl":"https://doi.org/10.56028/fesr.1.3.1","url":null,"abstract":"With the development of a fully mechanized mining face, comprehensive mechanized mining face, and high-capacity and high-efficiency mining face in the coal mine, the level of mechanization and productivity is being improved, as well as dust capacity. If dust density is not reduced, it will be a hazard to the respiratory system of the miners seriously, even trigger pneumoconiosis, and the normal running of pieces of equipment will be affected, accelerating insulation equipment aging, and causing an explosion. Miners’ health and safety, normal running of equipment, and economic efficiency are being injured severely. \u0000Mist dust removal is the most widely used in coal mining, and it has been proven very effective. But the dust removal effect is affected because of the low interference resistance of the light control sensor, and small application scope of the solenoid valve, low agility of the spray device. In the paper, mist dust removal from coal mining was selected as the research background, and dust concentration detection and mechanism of mist dust removal were studied. The light control sensor, dust concentration sensor, and spray device were improved. By the mist dust removal device, online and real-time dust concentration monitoring can be achieved, and automatic dust removal can be realized according to the dust concentration. So, the dust concentration can be effectively reduced, working conditions can be improved, and safe production in enterprises and miners’ health can be guaranteed. The main work of the paper includes the following aspects. \u0000① the paper studied the application background and research actuality of dust removal at home and abroad, and analyzed the existing technology of dust removal, and pointed out the research aim and main content. \u0000②  to provide academic support for the improved design of a mist dust removal device, the paper analyzed dust concentration detection, mechanism of mist dust removal and main affecting factors of dust removal. \u0000③ Through needs analysis, the paper presented overall architecture and functional module design. \u0000④ Control module, dust concentration sensor, light control sensor, and spray device were improved. at the same time, the performance tests were also discussed. \u0000⑤ the paper run the laboratory tests and field tests, the test results showed that the device can measure dust concentration truly, and realize automatic dust removal, and reduce the dust concentration effectively.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114774784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation of carbon - based nanocomposites and their application in the anode of lithium ion batteries","authors":"Mingyuan Wang","doi":"10.56028/fesr.1.3.20","DOIUrl":"https://doi.org/10.56028/fesr.1.3.20","url":null,"abstract":"At present, with the increasing demand for electronic products, accompanied by the rise of new energy vehicles, the application of lithium-ion batteries in life is gradually popular. Used for commercial purposes of lithium battery cathode on the characteristic with non-toxic cut the advantage of cost control more successful, but its development in the future have received the restrictions in terms of the specific capacity, so using carbon nano composite material has become the new direction for the future development of lithium ion battery cathode, this article will also with its as the research direction for research.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129865749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of influence of meteorological factors on air pollution in Hunan Province","authors":"Hao Li, Xinglu Nie","doi":"10.56028/fesr.1.2.1","DOIUrl":"https://doi.org/10.56028/fesr.1.2.1","url":null,"abstract":"With the our country economy level of development and progress continuously, the serious \u0000destruction of ecological environment of our country, especially when the air pollution is more \u0000serious, so our government relevant departments in order to better improve the ecological \u0000environment, atmospheric environment, by adopt the method of air quality monitoring to \u0000understand local atmospheric pollution. In this paper, the variation trend of air quality in Hunan \u0000province in recent one year was analyzed and studied, including whether the concentrations of \u0000carbon monoxide, sulfur dioxide and nitrogen dioxide in the air were kept in the second-level \u0000standard, and whether the variables affecting air ozone concentration were related to the \u0000duration of sunshine and temperature, etc.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121314761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinematic analysis of intelligent petrochemical fluid handling arm","authors":"Haonan Yan, Lijun Meng, Wen-Jiang Shu","doi":"10.56028/fesr.1.2.17","DOIUrl":"https://doi.org/10.56028/fesr.1.2.17","url":null,"abstract":"In view of the low degree of automation of fluid transfer device in China's petrochemical industry, \u0000this paper designs and develops an intelligent fluid transfer operator arm instead of manual \u0000operation and draws its three-dimensional model based on the common structure type of \u0000land-based fluid loading and unloading arm in the current market. The kinematic model of the \u0000arm was developed based on the Denavit-Hartenberg method, and the forward and inverse \u0000kinematics were analyzed; then the Jacobi matrix of the arm was obtained based on the \u0000chi-square transformation matrix and vector product method. Finally, the positive kinematic \u0000simulation was carried out by using the Robotics Toolbox toolkit in Matlab software, and the \u0000conclusion that the linkage coordinate system established by the D-H method is consistent with \u0000the actual structure of the manipulator arm in this paper.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130918190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the present situation of water pollution and ecological control methods in Hunan Province","authors":"Hao Li, Xinglu Nie","doi":"10.56028/fesr.1.2.8","DOIUrl":"https://doi.org/10.56028/fesr.1.2.8","url":null,"abstract":"As we all know, water resources are non-renewable resources, especially in the northwest area, \u0000water is difficult to find is the normal situation of every family. Water resource plays an \u0000important role in ecological civilization construction system and is an important prerequisite for \u0000human survival and development. In recent years, along with our country economy fast \u0000development, the scale of urbanization, industrialization of hunan province is more and more \u0000much, city water environmental pollution already more than city cleaning ability and capacity, \u0000which can lead to urban water environment pollution is more and more serious, so how to \u0000control in hunan city water pollution situation is imminent. This paper mainly analyzes and \u0000studies the urban water pollution and ecological control methods in Hunan Province.","PeriodicalId":314661,"journal":{"name":"Frontiers of Engineering and Scientific Research","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121876113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}