Other Topics Engineering Research eJournal最新文献_第3页

Comparative Analysis of UPQC With Various Hysteresis Current Controllers UPQC与各种迟滞电流控制器的比较分析

Other Topics Engineering Research eJournal Pub Date : 2020-06-30 DOI: 10.34218/ijeet.11.4.2020.044

A. Viji, Dr. S. Balasubramaniyan

{"title":"Comparative Analysis of UPQC With Various Hysteresis Current Controllers","authors":"A. Viji, Dr. S. Balasubramaniyan","doi":"10.34218/ijeet.11.4.2020.044","DOIUrl":"https://doi.org/10.34218/ijeet.11.4.2020.044","url":null,"abstract":"This paper deals the comparative analysis of a three-phase three wire Unified Power Quality Conditioner (UPQC) with various hysteresis current controllers. The UPQC is one among the custom power devices which is a integration of series and shunt active power filters (APF) connected by a common link capacitor. The construction of shunt and series APF is by using a three phase three wire Voltage source Inverter (VSI). In series active filter, synchronous reference frame technique is used to extract fundamental voltage; whereas in shunt active filters, instantaneous reactive power theory (IRPT) is used to extract fundamental current. Switching pulses for both filters generated by hysteresis current controller (HCC), multilevel vector based hysteresis current controller (MVHCC) and adaptive hysteresis current controller (AHCC).The performance of the various HCC based control algorithm of shunt active filter with series active filter is evaluated in a three-phase distribution system connected with non-linear and unbalanced load conditions. Fuzzy logic control is used for dc capacitance balancing. The control technique is executed by the use of MATLAB/Simulink-based simulations environment.","PeriodicalId":102139,"journal":{"name":"Other Topics Engineering Research eJournal","volume":"19 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120876916","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

Fast High-Resolution Multi-Elemental Mapping of Phosphate Pellets Using Laser Induced Breakdown Spectroscopy 基于激光诱导击穿光谱的磷酸盐颗粒快速高分辨率多元素制图

Other Topics Engineering Research eJournal Pub Date : 2020-06-30 DOI: 10.2139/ssrn.3639161

N. Azami, L. Deshayes, S. Elmrabet, Abdeljabbar Lebbardi, L. Celebi Ozcan, F. Doucet, K. Rifai

{"title":"Fast High-Resolution Multi-Elemental Mapping of Phosphate Pellets Using Laser Induced Breakdown Spectroscopy","authors":"N. Azami, L. Deshayes, S. Elmrabet, Abdeljabbar Lebbardi, L. Celebi Ozcan, F. Doucet, K. Rifai","doi":"10.2139/ssrn.3639161","DOIUrl":"https://doi.org/10.2139/ssrn.3639161","url":null,"abstract":"Recent years have seen a growing trend towards analytical techniques capable of conducting spatially resolved analyses of surfaces for industrial, nanotechnology, geological and biomedical applications. Depending on the application, spatially resolved measurements are required to provide a better understanding of the sample surface composition with significant advantages over conventional bulk analyses. The recent developments of the LIBS technique and its simplicity of use have allowed the development of systems capable of performing multi-element imaging analyses of major and trace elements with ~50 μm (or lower) spatial resolution at fast acquisition speeds up to kHz per pixel. LIBS technology enables systematic and selective ways based on the physics of atomic emission spectroscopy (AES). Complex structures are revealed by LIBS imaging at ultrafast speed. This paper presents results on laser-induced breakdown spectroscopy (LIBS) performing fast high-resolution multi-elemental mappings of Phosphate samples. Phosphate Pellets samples were laser scanned at a repetition rate of 1 kHz with a spatial resolution of 50 μm, using the Mission: Coriosity platform from ELEMISSION Inc. The elemental mappings of the 10 mm2 surfaces for 6 elements were obtained, revealing high levels of detail and complexity in the elements distributions. Advanced graphical algorithms allow direct visualization of the distribution of several elements on the same image. In particular, LIBS imaging has been used for multi-elements surface mapping of Phosphate Pellets, and show specific clustering composition, indicating that line intensity of a given analyte element is not only related to that analyte, but also to other elements present in the samples. This last statement has been verified using multivariate approach for calibration and prediction of elemental concentration in Phosphate Pellets.","PeriodicalId":102139,"journal":{"name":"Other Topics Engineering Research eJournal","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115452233","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

How Lucrative & Challenging the Boundary less Opportunities for Data Scientists? 如何为数据科学家创造利润和挑战边界的机会?

Other Topics Engineering Research eJournal Pub Date : 2020-06-30 DOI: 10.5281/ZENODO.3966222

S. Sachin Kumar, P. Aithal

{"title":"How Lucrative & Challenging the Boundary less Opportunities for Data Scientists?","authors":"S. Sachin Kumar, P. Aithal","doi":"10.5281/ZENODO.3966222","DOIUrl":"https://doi.org/10.5281/ZENODO.3966222","url":null,"abstract":"The data scientist is a new profession which is considered as a key profession in the world oftechnologies and is one of the best paid jobs. A data scientist is a person who has developedexpertise in the mathematical modelling and statistics that dominates programming and itsdifferent languages, computer science, and analytics. Data science comprises of datagathering, data warehousing, data analysis, data mining, online analytical processing,artificial intelligence, machine learning, and decision science for Predictive and prescriptiveanalytics for supporting managers for future decision process in a hectic competitiveenvironment. Due to globalization and ICCT supported automation of many businessprocesses, big data supported data science importance in many industries and hence Datascientists are also getting huge demand. Data scientists are key change-makers inside anenterprise that provides knowledge that they can illuminate the company's journey toward itsultimate business goals they have strong market demand. They are instrumental in inspiringboth leaders and developers to build better products and paradigms. Their role in bigbusiness is becoming increasingly important, they are in ever shorter supply. Demand fordata scientists is so exponentially growing that McKinsey expects a 50 percent difference indata scientists' supply versus demand by 2018. In this paper, we have analysed the continuedopportunities for data scientists for 21st century business and how lucrative and challengingis their job based on opportunities and challenges framework.","PeriodicalId":102139,"journal":{"name":"Other Topics Engineering Research eJournal","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130799676","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: 3

Developing International Perspectives on Market Definition in Digital Markets 数字市场中市场定义的国际视角

Other Topics Engineering Research eJournal Pub Date : 2020-06-30 DOI: 10.2139/ssrn.3643841

A. Grunes

引用次数: 0

Waste Tire Derived Materials to Treat Phosphate Processing Waste 废轮胎衍生材料处理磷酸盐加工废弃物

Other Topics Engineering Research eJournal Pub Date : 2020-06-26 DOI: 10.2139/ssrn.3636086

Itziar Iraola Arregui, M. Weiss, P. van der Gryp, C. Schwarz

{"title":"Waste Tire Derived Materials to Treat Phosphate Processing Waste","authors":"Itziar Iraola Arregui, M. Weiss, P. van der Gryp, C. Schwarz","doi":"10.2139/ssrn.3636086","DOIUrl":"https://doi.org/10.2139/ssrn.3636086","url":null,"abstract":"The process of obtaining phosphate from mining produces large amounts of waste. Finding an eco-friendly way of treating and/or valorising these by-products is of utmost importance for the phosphate processing industry, the settlements located near to the mine and processing plant and the environment in general. On the other hand, due to the fast development of the modern society, the transportation needs and therefore the number of tires produced to fulfill those requirements is increasing daily. When reaching their end-of-life those tires enter the waste stream creating a significant issue since they are very difficult to handle. The use of waste tire derived materials for the treatment of phosphate waste sludge could tackle both problems at once. This study focused on the use of waste tire crumb and the solid residue (char) of tire pyrolysis to adsorb trace elements (that are usually present in phosphate water effluents) from synthetic solutions. Cu and Ni where the minerals analysed in this case study. The behaviour of waste tire derived adsorbents in batch adsorption systems was studied varying the pH, contact time and cation to adsorbent quantity ratio. At optimum adsorption conditions, the potential adsorbent materials and their behaviour with the two heavy metal cations, differs. While char shows high affinity to adsorb Cu (>97% removal), crumb does not interact with this metal to a high extent giving a lower value (around 30%). On the other hand, for Ni, crumb performed slightly better than char although none of them reached 20% removal. When both cations were present simultaneously in the solution a negative impact on the Ni removal was noticeable for char, due to the leaching from the adsorbent. The adsorption process follows most likely an ion exchange mechanism. Therefore, this study shows the potential of waste tire derived materials for heavy metal cations removal from aqueous solutions.","PeriodicalId":102139,"journal":{"name":"Other Topics Engineering Research eJournal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131063386","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 Novel Bone-Targeting Enoxacin Delivery System to Eradicate Staphylococcus Aureus-Related Implantation Infections 一种新型骨靶向依诺沙星递送系统根除金黄色葡萄球菌相关植入感染

Other Topics Engineering Research eJournal Pub Date : 2020-06-19 DOI: 10.2139/ssrn.3622646

Cong Yao, P. Zhan, Xiuguo Han, Q. Tao, X. Luo, Feilong Li, Fuqiang Wang, Zhiping Gu, Huaen Xu, Qiang Xu, Xiao-Long Yu, Bin Zhang, Min Dai, Tao Nie, Xuqiang Liu

{"title":"A Novel Bone-Targeting Enoxacin Delivery System to Eradicate Staphylococcus Aureus-Related Implantation Infections","authors":"Cong Yao, P. Zhan, Xiuguo Han, Q. Tao, X. Luo, Feilong Li, Fuqiang Wang, Zhiping Gu, Huaen Xu, Qiang Xu, Xiao-Long Yu, Bin Zhang, Min Dai, Tao Nie, Xuqiang Liu","doi":"10.2139/ssrn.3622646","DOIUrl":"https://doi.org/10.2139/ssrn.3622646","url":null,"abstract":"Post-operative infections in orthopaedic implants are severe complications that require urgent solutions. Owing to the presence of implants and the formation of bacterial biofilms, the efficacy of antibiotics is limited. Furthermore, osteoclasts can become extremely active, accompanied by bone loss in the infected microenvironment. Therefore, implants often need to be removed. To improve the concentrations of antibiotics in bony tissues and enhance their effectiveness in preventing bacterial biofilm formation, the infection rate must be controlled to preserve the implants. Enoxacin exerts combined antibacterial and osteoclast inhibitory effects. It also plays a role in limiting infections and preventing bone loss. Aspartic acid octapeptide (ASP8) can also recognize and combine with hydroxyapatite crystals in bones and can be targeted to increase antibiotic concentrations in bones. Our previous research showed that preparing mesoporous nanomaterials resulted in optimal drug loading, releasing, and bone-targeting properties. Based on earlier research, a new bone-targeted antibiotic release system was developed. Enoxacin and ASP8 were loaded on mesoporous silica nanoparticles (MSNs) to increase antibiotic concentrations, prevent bacterial biofilm formation, inhibit aberrant osteoclast activities, and reduce bone loss. Enoxacin-loaded MSNs (Gen@MSN-D) were assessed using a variety of experimental methods, including rat models. We studied the in vitro antibacterial properties of the new drug delivery system. We found that these materials had antibacterial properties in vivo, inhibitory effects on osteoclasts, and can be used to prevent and treat post-implantation infections and bone loss. Therefore, we believe these materials will provide a new method for preventing and treating post-operative, orthopaedic implant-associated infections.","PeriodicalId":102139,"journal":{"name":"Other Topics Engineering Research eJournal","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126589724","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

Discovering Hierarchies Among Intermetallic Crystal Structures 发现金属间晶体结构的层次结构

Other Topics Engineering Research eJournal Pub Date : 2020-06-18 DOI: 10.2139/ssrn.3622606

S. Kolli, A. Natarajan, John C. Thomas, T. Pollock, A. Van der Ven

引用次数: 10

Wo 3-X/Si N-N Homotype Heterojunction with High Performance Photodetection Characteristics 具有高性能光电探测特性的Wo 3-X/Si N-N同型异质结

Other Topics Engineering Research eJournal Pub Date : 2020-06-18 DOI: 10.2139/ssrn.3566604

Xiwei Zhang, Yiwen Su, Zhenjie Tang, D. Hu, Zhi Wang, Yuexin Hou, Xinmiao Wang

引用次数: 10

Uses of Biogas and Biomethane 沼气和生物甲烷的使用

Other Topics Engineering Research eJournal Pub Date : 2020-06-15 DOI: 10.48216/9788269203325ch10

J. Lamb

引用次数: 1

Molecular Basis of C–S Bond Cleavage in the Glycyl Radical Enzyme Isethionate Sulfite-Lyase 甘酰基自由基酶异硫酸亚裂解酶C-S键裂解的分子基础

Other Topics Engineering Research eJournal Pub Date : 2020-06-12 DOI: 10.2139/ssrn.3606780

C. D. Dawson, Stephania M. Irwin, L. Backman, C. Drennan, E. Balskus

引用次数: 1