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A Simplified Approach for Predicting the Time of Consolidation for a Multi-Layered Foundation 多层地基固结时间预测的简化方法
Research & Development in Material Science Pub Date : 2021-09-28 DOI: 10.31031/rdms.2021.15.000871
T. Duong
{"title":"A Simplified Approach for Predicting the Time of Consolidation for a Multi-Layered Foundation","authors":"T. Duong","doi":"10.31031/rdms.2021.15.000871","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000871","url":null,"abstract":"This paper deals with a simplified approach of predicting the time of consolidation settlement for a multi-layered foundation using the coupling technique for settlement and unsettlement zones in a specific compressible layer and layers. According to MIT’s lecture, every two layers should combine into one having an equivalent degree of consolidation or having an equivalent thickness of consolidation. From this valuable guideline, several procedures are developed to tackle the specific problem of the settlement of a multi-layered foundation. This study also introduces an idea for coupling the layers, concerning the drainage path during combining every two layers, and some practical points are suggested.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79640482","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
Applications of Electromagnetic Field to Continuous Casting Process of Steel 电磁场在钢连铸过程中的应用
Research & Development in Material Science Pub Date : 2021-09-15 DOI: 10.31031/rdms.2021.15.000870
H. Harada
{"title":"Applications of Electromagnetic Field to Continuous Casting Process of Steel","authors":"H. Harada","doi":"10.31031/rdms.2021.15.000870","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000870","url":null,"abstract":"","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90927944","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
Oxidation Treatment of Arsenic Sulfide Slag 硫化砷渣的氧化处理
Research & Development in Material Science Pub Date : 2021-08-17 DOI: 10.31031/rdms.2021.15.000869
Liang Rui-bing
{"title":"Oxidation Treatment of Arsenic Sulfide Slag","authors":"Liang Rui-bing","doi":"10.31031/rdms.2021.15.000869","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000869","url":null,"abstract":"Large quantities of arsenic-containing toxic emissions are released during the smelting process of non-ferrous minerals. The scrubbing process of flue gases from roasting furnaces, for example, produces a large amount of arsenic-containing acid sewage, and the latter, in turn, produces arsenic sulfide slag during the sulfide precipitation process. The arsenic sulfide slag is highly toxic and cannot be disposed of directly to the environment. It needs to be converted to some environment-friendly forms before disposal. With increasingly stringent requirements on environmental protection, more attention is being paid to the eco-friendly treatment of arsenic waste. The oxidation of arsenic sulfide slag can be the appropriate process. In the present paper, methods for treating arsenic sulfide residue waste are suggested; these include ferric sulfate oxidation leaching, hydrothermal treatment assisted by ferric nitrate, alkali leaching with air oxidation, sodium carbonate alkaline leaching, hydrogen peroxide oxidation leaching, etc. The possibilities of suggested processes in the industrial environment are also discussed.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87076034","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
A Review of GUMBOS: Tunable Ionic Materials GUMBOS:可调离子材料的研究进展
Research & Development in Material Science Pub Date : 2021-08-16 DOI: 10.31031/rdms.2021.15.000868
C. Ayala
{"title":"A Review of GUMBOS: Tunable Ionic Materials","authors":"C. Ayala","doi":"10.31031/rdms.2021.15.000868","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000868","url":null,"abstract":"Strategic development of ionic materials has long been of considerable interest to many researchers. For example, ionic liquid research has been extensively explored as alternative solvents to highly volatile and/or caustic traditional organic solvents. While these solvents have been classified as having a range of melting points (below 100 °C), many researchers have targeted relatively low melting point materials for their desired applications. Similar materials with higher melting points were often deemed inefficient and often discarded and declared useless. However, several groups have begun to explore the advantages of solid-phase ionic materials, known as a groups of uniform materials based on organic salts (GUMBOS). Many advantages arise through implementation of these solid-state ILs analogues in different fields of research. These advantages include 1) maintaining ease of synthesis using IL chemistry, 2) exploring easy tunability of solid-state materials, and 3) providing researchers with ability to easily develop materials on the nanoscale. Herein, we provide an overview of advantages of using GUMBOS for materials research applications.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85091611","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
Tailored Synthesis of PS@Ag@TiO2 Core-shell Nanocomposite for Photocatalytic Dye Degradation 用于光催化染料降解的PS@Ag@TiO2核壳纳米复合材料的定制合成
Research & Development in Material Science Pub Date : 2021-08-03 DOI: 10.31031/rdms.2021.15.000866
H. Acharya
{"title":"Tailored Synthesis of PS@Ag@TiO2 Core-shell Nanocomposite for Photocatalytic Dye Degradation","authors":"H. Acharya","doi":"10.31031/rdms.2021.15.000866","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000866","url":null,"abstract":"Here, we describe a simple chemical method to synthesize multi component PS@Ag@TiO 2 nanocomposites. The three-step synthetic approach comprises of synthesis of polystyrene (PS) particles, deposition of silver (Ag) nanostructure and coating of titanium dioxide (TiO 2 ) nanoshells. As synthesized materials is characterised by microscopic and spectroscopic techniques. The size of the PS particles is obtained as approx. 200nm in diameter. Ag nanoparticles deposited PS particles are indicated by the surface plasmon band resonance in UV-vis study. To study the potential application, the photocatalytic activity of the PS@Ag@TiO 2 nanocomposites is investigated in Methylene Blue (MB) dye degradation. Nanocomposite provides high photocatalytic degradation with a maximum efficiency of over 90% only in 30min.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82547720","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
LIDAR Monitoring of Urban Areas 城市地区激光雷达监测
Research & Development in Material Science Pub Date : 2021-08-03 DOI: 10.31031/rdms.2021.15.000867
N. I
{"title":"LIDAR Monitoring of Urban Areas","authors":"N. I","doi":"10.31031/rdms.2021.15.000867","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000867","url":null,"abstract":"The use of a LIDAR to monitor the air pollution makes it possible to control large city areas and detect the spatiotemporal location of Particulate Matter (PM) emissions sources. LIDAR monitoring is a fast method for estimating the pollution, respectively the mass concentration of PM in the atmospheric ground bioaerosol. The careful study of air pollution becomes especially relevant as the PM are potential carriers of solid-state particles dangerous to health and biologically active components. The present report summarizes our experience [1-3] on how the intricate complex of particles with different content and size found in the aerosol might affect the LIDAR monitoring results on the long distance. LIDAR subject of this study is capable of scanning and mapping the horizontal and vertical aerosol distributions and the transport of air masses with a range resolution along the Line of Sight (LOS) of 30m and a beam divergence of ~1 mrad at operational distances of about 25km [3]. The laser emitter (wavelength of 510.6nm) is a pulsed CuBr vapor laser with a repetition rate of 5-10kHz at a 15-ns pulse duration. The receiving system comprises a Carl Zeiss Jena Cassegrain telescope (aperture of 20cm and a focal distance of 1m), a 2-mm-wide focal diaphragm, an interference filter with a 2-nm-wide passband, and an EMI 9789 photo-multiplier tube operating in a photon-counting mode along the entire operational distance. The receiving system is fully computerized for collecting and processing the LIDAR data using a PCO 1001 1024-channel digital interface system for signal strobing and accumulation. The LIDAR monitoring was calibrated based on the data from a sampling absorber located just below the spot of the LIDAR beam with a flow rate of 100m /h, where the particles are collected on a filter with pore size 3µ m (FILTER-LAB, Material MCE, Lot.180509006).","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80143345","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
IR Transparent Ceramic Microfluidic Chips Produced by Powder Injection Molding 粉末注射成型制备红外透明陶瓷微流控芯片
Research & Development in Material Science Pub Date : 2021-07-07 DOI: 10.31031/rdms.2021.15.000865
Tao Li
{"title":"IR Transparent Ceramic Microfluidic Chips Produced by Powder Injection Molding","authors":"Tao Li","doi":"10.31031/rdms.2021.15.000865","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000865","url":null,"abstract":"","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75774088","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
Quantification of Water Impurity in an Atomic Layer Deposition Reactor Using Group Contribution Method 用基团贡献法定量原子层沉积反应器中的水杂质
Research & Development in Material Science Pub Date : 2021-06-23 DOI: 10.31031/rdms.2021.15.000864
C. Takoudis
{"title":"Quantification of Water Impurity in an Atomic Layer Deposition Reactor Using Group Contribution Method","authors":"C. Takoudis","doi":"10.31031/rdms.2021.15.000864","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000864","url":null,"abstract":"Atomic Layer Deposition (ALD) is a vapor phase process to deposit thin films using precursors and co-reactants on a variety of substrates. The ALD system, the data of which is used here, had aimed to deposit TiO2 thin films on polymethyl methacrylate (PMMA) and silicon reference substrates using tetrakis(dimethylamido)titanium and ozone. Absorbed water molecules in PMMA were released into the reactor during deposition, acted as a co-reactant, and affected the growth rate on the silicon reference substrate. The objective of this work is to theoretically calculate the amount of water impurities in the ALD reactor during several number of cycles. A group contribution method based on Adsorbate Solid Solution Theory (ASST) is employed to theoretically estimate the number of moles of water in the above-mentioned ALD reactor.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88575357","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: 2
Synthesis and Mechanical Characterization of Al Casting Produced by Slip Casting and Pressure Less Sintering 滑移铸造-无压烧结铝铸件的合成及力学性能
Research & Development in Material Science Pub Date : 2021-06-14 DOI: 10.31031/rdms.2021.15.000863
M. A. Hussain
{"title":"Synthesis and Mechanical Characterization of Al Casting Produced by Slip Casting and Pressure Less Sintering","authors":"M. A. Hussain","doi":"10.31031/rdms.2021.15.000863","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000863","url":null,"abstract":"The aluminum (Al) metallurgical parts have been used in various industrial applications including but not limited to structural, aerospace and automotive industries etc. owing to their excellent corrosion resistance, light weight, and good mechanical properties especially good specific strength [1-3]. In conventional ingot making, the properties of Al-alloys were improved by changing the composition of alloying elements, optimizing the processing techniques like heat treatments and mechanical treatments. There are various physical and mechanical properties which are not improved through ingot casting technique, and hence there is need to explore new processing techniques which can produce desire properties for complex shaped components. Metal casting is one of the important and widely used routes to shape Al metallurgical parts, however this process is health hazardous and not ecofriendly [4]. The powder metallurgy (P/M) can provide the possible solutions to the aforementioned issues associated with the production of Al metallurgical parts.","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72697777","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
Change in Material Properties at Mechanoactivation 机械活化下材料性能的变化
Research & Development in Material Science Pub Date : 2021-06-10 DOI: 10.31031/rdms.2021.15.000862
Pryadko Nataliya Sergeevna
{"title":"Change in Material Properties at Mechanoactivation","authors":"Pryadko Nataliya Sergeevna","doi":"10.31031/rdms.2021.15.000862","DOIUrl":"https://doi.org/10.31031/rdms.2021.15.000862","url":null,"abstract":"Grinding activation is a new way to accelerate physical and chemical processes. It finds more and more widespread use and is the basis of fundamentally new technological processes, when an auxiliary operation becomes the main one. In the production of cement, crushed granular blast furnace slag can partially replace cement, provided the desired specific surface area of the product. This operation reduces energy consumption for the technological process and leads to lower consumption of natural raw materials. The studies of the dependence of the activated material properties on its storage terms have been carried out. Analysis of the results allows us to assert that the specific surface area of blast-furnace slags for each type of material decreases during the storage of crushed powders. The established dependencies can be used to predict the permissible storage and storage time of activated finely dispersed materials for their further use as building materials and mineral powders for construction and production of building materials. and nonferrous","PeriodicalId":20943,"journal":{"name":"Research & Development in Material Science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73075529","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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