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The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science最新文献

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Identification of Crop Diseases Using Deep Learning Algorithm 利用深度学习算法识别作物病害
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-09-15 DOI: 10.35219/mms.2022.3.04
F. Marin, M. Matache, M. Marin, C. Gurău, G. Gurău
{"title":"Identification of Crop Diseases Using Deep Learning Algorithm","authors":"F. Marin, M. Matache, M. Marin, C. Gurău, G. Gurău","doi":"10.35219/mms.2022.3.04","DOIUrl":"https://doi.org/10.35219/mms.2022.3.04","url":null,"abstract":"In this paper we present an algorithm based on deep learning. The program allows the user to select in a graphical interface the type of plant for which it is desired to insert images for disease identification. To train and test models, we used our own data set with a relatively small number of images, and all images were captured in culture, and not in laboratory conditions. The algorithm is based on deep learning approach. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79953859","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}
引用次数: 0
Vitrification of Iron Oxide Rich Sludge Resulted from the Groundwater Treatment as New Glass Ceramic Materials 地下水处理后富氧化铁污泥作为新型玻璃陶瓷材料的玻璃化
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-09-15 DOI: 10.35219/mms.2022.3.02
C. Vancea, G. Mosoarca, S. Popa, S. Boran
{"title":"Vitrification of Iron Oxide Rich Sludge Resulted from the Groundwater Treatment as New Glass Ceramic Materials","authors":"C. Vancea, G. Mosoarca, S. Popa, S. Boran","doi":"10.35219/mms.2022.3.02","DOIUrl":"https://doi.org/10.35219/mms.2022.3.02","url":null,"abstract":"This paper offers a new solution to vitrify the sludge resulted from washing the filters used for iron removal phase of the groundwater treatment process. The new glass ceramic materials, obtained after heat treatment at three different temperatures: 800, 900 and 1000 oC were characterized in terms of dimensional stability after firing, apparent density and porosity, hydrolytic stability and iron ions immobilization capacity. The effect of the calcined sludge amount upon  the mentioned properties was analysed. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84805855","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}
引用次数: 0
Laminated Composite Materials Obtained by Lamination with Carbon Fiber 碳纤维层压制备的层压复合材料
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-09-15 DOI: 10.35219/mms.2022.3.08
R. Iernuțan
{"title":"Laminated Composite Materials Obtained by Lamination with Carbon Fiber","authors":"R. Iernuțan","doi":"10.35219/mms.2022.3.08","DOIUrl":"https://doi.org/10.35219/mms.2022.3.08","url":null,"abstract":"Composite materials have had a rapid development in recent decades and have come to be used in various fields of industry, including civil engineering. The study of composite materials, but especially of those layered with fibers of different types, is based on improving the physical and mechanical properties and increasing the resistance of the resulting new materials. Through the experimental study, it is aimed to resolve some technological issues regarding the  anufacture of samples from composite materials reinforced with carbon fiber and epoxy resins and to improve the mechanical resistance of the usual construction materials from the composition of resistance structures. Combining or  reinforcing materials such as wood or concrete, with carbon fiber or glass laminated with epoxy resins or inserted directly into their composition as dispersed reinforcement, increases their properties. In this way, smaller dimensions of the elements can be obtained, leading to an increase in their load-bearing capacity. In this experimental work it is aimed to increase the mechanical and physical resistance behavior of certain materials with the help of carbon fiber laminated with epoxy resins. It has been chosen to use as raw material for samples: concrete, solid brick sandwich, wood, and extruded polystyrene. Depending on the utility of each, after lamination with carbon fibers, the samples are tested for bending moment, compression, fire resistance and  shock resistance. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81350546","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}
引用次数: 0
Increase the Load of Loss of Stability for the Pillars of Large-Opening Halls 增大大开口大厅柱体失稳负荷
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-09-15 DOI: 10.35219/mms.2022.3.06
M. Botiș, C. Pleșcan
{"title":"Increase the Load of Loss of Stability for the Pillars of Large-Opening Halls","authors":"M. Botiș, C. Pleșcan","doi":"10.35219/mms.2022.3.06","DOIUrl":"https://doi.org/10.35219/mms.2022.3.06","url":null,"abstract":"At the ground floor halls with an opening or more, the forces that are transmitted through the pillars due to gravitational loads (snow, and her weight) have high values. The gravitational difference that is transmitted to the pillars increases the greater the opening between the pillars is. In this Article we analyse the pillars of halls that are articulated recessed, because they have the advantage that the joints do not transmit bending moments. In the case of halls with large openings or halls rehabilitated or strengthened, to increase the critical load of loss of stability can increase the moment of inertia of the pillars from the recessed to the articulated end. In this Article, a parametric numerical study is presented, which establishes the critical load at a pillar with a variable section, depending on the length of the area where the moment of inertia of the slat has been increased. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89331959","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}
引用次数: 0
Equilibrium Study Regarding Crystal Violet Dye Adsorption on Raspberry Leaves Powder 结晶紫染料在覆盆子叶粉上吸附的平衡研究
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-06-15 DOI: 10.35219/mms.2022.2.07
G. Mosoarca, C. Vancea, S. Popa, S. Boran, M. Rădulescu-Grad
{"title":"Equilibrium Study Regarding Crystal Violet Dye Adsorption on Raspberry Leaves Powder","authors":"G. Mosoarca, C. Vancea, S. Popa, S. Boran, M. Rădulescu-Grad","doi":"10.35219/mms.2022.2.07","DOIUrl":"https://doi.org/10.35219/mms.2022.2.07","url":null,"abstract":"This work focuses on the crystal violet removal from aqueous solution using raspberry leaves powder as adsorbent materials. SEM and colour analyses were used to characterize the adsorbent surface. The influence of pH, adsorbent dose and initial dye concentration was studied. Equilibrium modeling was performed to characterize the adsorption process and to determine the maximum adsorption capacity. Sips isotherm characterizes the adsorption and the maximum adsorption capacity, 264.5 (mg/g) was better compared with other similar adsorbents. The obtained results indicate that adsorbent material, obtained from raspberry leaves, is very suitable to be used for crystal violet removal from aqueous solutions. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88207822","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}
引用次数: 0
Studies and Research on Electrochemically Obtaining Zinc Matrix Composite Materials Using the Al2O3 Dispersion Phase Al2O3分散相电化学法制备锌基复合材料的研究
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-06-15 DOI: 10.35219/mms.2022.2.05
S. Boiciuc
{"title":"Studies and Research on Electrochemically Obtaining Zinc Matrix Composite Materials Using the Al2O3 Dispersion Phase","authors":"S. Boiciuc","doi":"10.35219/mms.2022.2.05","DOIUrl":"https://doi.org/10.35219/mms.2022.2.05","url":null,"abstract":"The paper presents the electrochemical production of composite zinc matrix coatings using Al2O3 as dispersed phases. It was found that by correlating the working parameters with the concentration of the dispersed phase in the electrolyte, the mechanical characteristics and the corrosion resistance of the deposits could be improved. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84112837","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}
引用次数: 0
An Interactive Method for Calculating the Maximum Efficiency (Organic Yield) in the Processing of the Tailing Dumps in Jiu Valley 九河谷尾矿库处理最大效率(有机产量)的交互式计算方法
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-06-15 DOI: 10.35219/mms.2022.2.02
Mihaela Olga Marița, V. Ciocan, Ildiko Brînaș
{"title":"An Interactive Method for Calculating the Maximum Efficiency (Organic Yield) in the Processing of the Tailing Dumps in Jiu Valley","authors":"Mihaela Olga Marița, V. Ciocan, Ildiko Brînaș","doi":"10.35219/mms.2022.2.02","DOIUrl":"https://doi.org/10.35219/mms.2022.2.02","url":null,"abstract":"The interactive method presented in the paper, allows the calculation of maximum efficiency indicators (organic yields) of the processing and operational control of the actual processing process. It also allows the correlation of the technological parameters with the economic ones in order to properly capitalize on the products obtained by processing a material (raw coal or sterile resulted from coal preparation) containing solid fuel fractions. Using the interactive system, one can pre-determine the optimal mixture of material to be processed and have different characteristics. The interactive method consists of three C programs that allow: the selection of the mixture of solid material to be processed, by tracing the abacuses and determining the theoretical weight extractions, depending on the desired quality of the concentrates; calculation of the organic processing yields; estimating the processing results, using the Fournol method, taking into account the performance of the processing equipment used and the density of separation between the products. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87564556","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}
引用次数: 0
Effect of the Fiber Orientation of Glass Fiber Reinforced Polymer Composites on Mechanical Properties 玻璃纤维增强聚合物复合材料的纤维取向对力学性能的影响
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-06-15 DOI: 10.35219/mms.2022.2.03
Rodica CHIHAI (PEȚU), C. Ungureanu, V. Bria
{"title":"Effect of the Fiber Orientation of Glass Fiber Reinforced Polymer Composites on Mechanical Properties","authors":"Rodica CHIHAI (PEȚU), C. Ungureanu, V. Bria","doi":"10.35219/mms.2022.2.03","DOIUrl":"https://doi.org/10.35219/mms.2022.2.03","url":null,"abstract":"Fiber reinforced polymer (FRP) composites possess excellent specific strength, specific stiffness and controlled anisotropy for which these are extensively used in various engineering applications, like automobile industries, aerospace industries, marine industries, space industries, electronics industries and many more. Glass fibers (GF), carbon fibers (CF) and aramid fibers (AF) are common reinforcements for polymer matrix composites (PMCs). High mechanical properties and wear resistance behaviour of glass fiber reinforced composites are the premises for the current experimental research on the effect of fiber orientation on the tensile strength of the polymeric composite materials. The glass fiber reinforced epoxy resin composite was prepared by wet lay-up method, followed by thermal treatment. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"301 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77742517","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}
引用次数: 0
The Evolution of CO2 Emissions from the Heating Systems of a Large City 大城市供暖系统CO2排放的演变
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-06-15 DOI: 10.35219/mms.2022.2.01
Aura Osanu, Liviu Enăcache, M. Bodor
{"title":"The Evolution of CO2 Emissions from the Heating Systems of a Large City","authors":"Aura Osanu, Liviu Enăcache, M. Bodor","doi":"10.35219/mms.2022.2.01","DOIUrl":"https://doi.org/10.35219/mms.2022.2.01","url":null,"abstract":"Different current reasons, like global warming due to greenhouse gases and high energy prices, creates the necessity to make the heating systems in large cities more efficient. The present paper presents a real situation for an urban agglomeration, regarding the transition from a centralized heating system to a decentralized one. Two types of decentralized possibilities are discussed and analyzed taking into account especially the CO2 emissions, during several recent years. In this respect, a calculus of CO2 emissions from the former heating system, compared to the present heating systems is also presented and discussed. \u0000 ","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87351685","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}
引用次数: 1
Obtaining Thin Films of ZnO Through Thermal Evaporation in Vacuum and Oxidation 真空热蒸发氧化法制备ZnO薄膜
The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science Pub Date : 2022-06-15 DOI: 10.35219/mms.2022.2.06
S. Boiciuc
{"title":"Obtaining Thin Films of ZnO Through Thermal Evaporation in Vacuum and Oxidation","authors":"S. Boiciuc","doi":"10.35219/mms.2022.2.06","DOIUrl":"https://doi.org/10.35219/mms.2022.2.06","url":null,"abstract":"The paper presents the obtaining of thin films out of ZnO by thermal evaporation and oxidation, in a conventional furnace, at various temperatures between 350-550 oC of films from pure Zn deposited. The influence of current intensity, deposition  time and oxidation temperature on film structure and transparency was monitored. \u0000","PeriodicalId":22358,"journal":{"name":"The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85767537","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}
引用次数: 0
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