Engineering Commons^™

Treatment Possibilities Of The Municipal Wastewaters In Ferizaj, Kosovo, Bekim Selimi

UBT International Conference

Kosovo has serious problems with the amount of water as well as their quality and the situation on the ground is quite alarming. There is no minimum wastewater treatment by collective pollutants nor by individual pollutants. As a result almost all wastewaters discharging to the rivers without any treatment deteriorating significantly their quality. The aim of this paper is to analyze the possibilities on finding solution to treat municipal waste waters in the Ferizaj town including villages. Municipality of Ferizaj performs wastewater discharge into the recipient without any prior treatment, which means directly into the river Neredime causing adverse effects …

Models For Reducing Power Consumption In Cpld And Fpga Devices, Marsida Ibro, Luan Karçanaj

UBT International Conference

Usage of programmable logic devices PLD has increased in the latest years because of the ability to quickly implement complex types of electronic systems while reducing cost and time of synthesis. This technology enables dynamic reconfiguration of different applications according to specific requirements. Also, power consumption and its loss is becoming an increasingly important requirement in the design of systems for portable applications fed by batteries.

Other factors to be taken into account in the consumption of power are elements that are used for manufacturing, packaging, and cooling systems. Power consumption must be taken into consideration especially for wireless applications …

Climatic Conditions And Other Resources For Kosovo Transition To "Ses" And His Vision, Vehebi Sofiu

UBT International Conference

Developing modern technologies have made possible finding of alternative opportunities for exploitation of natural resources in order to meet the energy demands. Renewable energy is a good opportunity of meeting the environmental requirements and functioning of the applicable techniques system with an efficacy and efficiency using. Natural resources owned by Kosovo, with the main resource of coal as the only opportunity for energy generation, which is also the biggest polluter in the country has increased the requirements of continuous research, which of the types of energy (alternative energy) is likely optimal to be put into operation. Measurements, studies and ongoing …

Physical-Chemical Characteristics Of The Substances Before And After The Discharge Of Factories Of The Detergents That Can Cause Increase Of The Degree Of The Eutrophication Of Surface Waters In The City Of Prizren, Sami Gashi, Ymerr Bajmaku, Petrit Drini

UBT International Conference

Industrial discharge waters, especially those of producers of detergents are one of the main polluters of surface waters in Prizren. The greatest polluters are: vehicle laundry and laundry of mega clothes, as well as factories producing liquid detergents, as well as powder ones. Concentration of active substances and perborate polyphosphate detergents also increase the wastewater from households. Therefore, we can say that the washing detergents, cleaning, are not safe for the environment, all of those are in varying degrees dangerous pollutants. Their presence represents the most acute problem of water supply in the city of Prizren. In this paper are …

Extraction Of Valuable Metals From Trepca Landfilled Lead Smelting Slags With Welc Process, Afrim Osmani, Musa Rizaj

UBT International Conference

The landfilled slags obtained over the years from reduction smelting of lead agglomerates at the Trepca lead smelter contain numerous components as metal oxides and sulphides as well as metals in elementary state. Among others they contain various forms of Pb, Zn, Cu, Ag, Ge, Tl, In, As, Bi, Sb. These are valuable elements that may turn these slags to a new important “raw material” for their extraction.

Based on the chemical composition results of 354 samples and mineralogical analysis then the quantity of these landfilled slag, which is estimated to be about 3 million tons it was concluded that …

Fuzzy Logic Controlofgantry Crane System, Betim Shabani

UBT International Conference

The use of gantry crane systems for transporting payload is very common in industrial application. However, moving the payload using the crane is not an easy task especially when strict specifications on the swing angle and on the transfer time need to be satisfied. To overcome this problem, an intelligent gantry crane system had been introduced. Fuzzy logic controllers were adopted, designed and implemented for controlling payload position as well as the swing angle of the gantry crane. Fuzzy logic defines rules that determine the behavior of the system using word descriptions instead of mathematical equations also fuzzy logic control …

Why Modeling Complex Dynamic Systems Using Fuzzy Cognitive Maps?, Peter P. Groumpos

UBT International Conference

The difficult problem of modeling Complex Dynamic Systems (CDS) is carefully reviewed. Main characteristics of CDS are considered and analyzed. Today’s mathematical models and approaches cannot provide satisfactory answers to the challenging problems of the society. The key problem of complex dynamic systems and control theory consists in the development of methods of qualitative analysis of the dynamics and behavior of such systems and in the construction of efficient control algorithms for their efficient operation. The purpose of control to bring the system to a point of its phase space which corresponds to maximal or minimal value of the chosen …

Advances And Prospects Of Lithium-Sulfur Batteries, Shou-Yi Yuan, Ying Pang, Li-Na Wang, Yong-Gang Wang, Yong-Yao Xia

Journal of Electrochemistry

Lithium-sulfur batteries have recently attracted worldwide attention due to the high specific theoretical energy density of sulfur cathode (2600 Wh⋅kg^-1), low cost and wide availability of sulfur. However, the practical application of lithium-sulfur batteries has been hindered by several challenges, such as the shuttling of polysulfide intermediates, the large volume expansion of sulfur during charge/discharge and the dendrites formation on lithium anode. Foremost among these is the shuttling effect arising from the dissolution of lithium polysulfides intermediate into the electrolyte from the cathode reaction and their diffusion to the anode where they react with metal lithium to form …

Construction And Sodium Storage Performance Of Complex One-Dimensional Nanomaterials, Yuan-Jie Zhang, Wei Li, Xuan-Peng Wang, Chao-Jiang Niu, Li-Qiang Mai

Journal of Electrochemistry

One-dimensional nanomaterials have been widely studied in energy storage and conversion fields because of their unique structure and physicochemical properties. Sodium-ion batteries are highly promising and attractive for large-scale energy storage due to the truly abundant sodium resources and low cost. With the growing demand of energy and deepening of research, the evolution of structures and properties of one-dimensional nanomaterials are also experiencing from simplicity to complexity and from ordinary to excellence. Therefore, constructing complex superior one-dimensional nanomaterials has become one of the hotspot in energy storage. Based on the new advance in this field and Mai group’s work, this …

Research Progress In Cycle Stability Of Silicon Based Li-Ion Battery Anodes, Ze-Liang Guo, Hui Wu

Journal of Electrochemistry

Silicon(Si), with the highest specific capacity currently known, is a promising anode material for Li-ion battery. However, in the charging and discharging process, with Li atoms inserting into and breaking out of the Si crystal lattices, the Si anode undergoes enormous volume expansion and contraction, ending in pulverization. The fact that the specific capacity of bulk Si anodes drop quickly is a challenging problem. In this review, we summarize recent progresses in Si anode. We concern about the nanostructure of silicon, cooperation of silicon with other additives and macrostructure design of anodes. We discuss strengths and shortcomings of different methods, …

Effects Of Lithium Salts On The Properties Of Hyperbrandched/Comb-Like Composite Polymer Electrolytes, Xian-Lei Hu, Xiao-Xu Liang, Ming-Qiu Zhang, Ruo-Xin Zhang, Li-Ping Zhang, Wen-Hong Ruan

Journal of Electrochemistry

Based on the chemical characteristics of the hydroxyl group of PVA side-chain, the hyperbrandched poly(amine-ester) (HBPAE) was used to hypergraftingly pretreated nano-silica (SiO₂) and polyving akohol (PVA). And different lithium salts were added to fabricate the SiO₂-g-HBPAE/PVA-g-HBPAE hyperbrandched/comb-like composite polymer electrolytes (CPEs). The dispersion of nanoparticles in matrix was observed by SEM. The effects of different lithium salts on the properties of CPEs were studied by DSC, tensile test and dielectric spectra. The results showed that the hypergrafting method improved the interphase compatibility between SiO₂ and matrix. Sulfonic acid type lithium salts accelerated self-plasticizing with …

The Study Of Dynamical Electrochemical Impedance Spectroscopy For Oxygen Reduction Reaction On Pt/C Catalyst, Kun-Ming Shi, Jian-Wei Guo, Jia Wang

Journal of Electrochemistry

With joint techniques of rotating disc electrode(RDE) and electrochemical impedance spectroscopy(EIS), and further establishment on equivalent circuit model, this paper studied oxygen reduction reaction(ORR) on commercial Pt/C catalyst in acid medium. Our results found that the dynamical interface on Pt/C consists of two independent processes: 1) the PtO reduction from Pt surface, 2) the new PtO formation from ORR, thus providing key clues for catalyst stability and activity. This also implied that the dynamical interface facilitates reconstruction for porous electrode, and matches with mass transfer. One important issue is discovered that at high overpotential, the high reaction rate for ORR …

Research Progress Of Si-Based Anode Materials For Lithium-Ion Batteries, Ding-Qiong Chen, Yang Yang, Qiu-Li Li, Jin-Bao Zhao

Journal of Electrochemistry

Owing to its high theoretical specific capacity (4200 mAh·g^-1), silicon is a promising candidate to replace graphite as the anode in lithium ion batteries (LIBs). However, low intrinsic electric conductivity and dramatic volume change (~ 300%) during the process of lithiation and delithiation result in electrode pulverization and capacity loss with cycling, accordingly, the application of silicon as an anode in LIBs has been severely hindered. We will discuss the structure of silicon electrode including synthesis of Si-based composites,the selection of binder for silicon and the fabrication of binder-free Si-based electrode, as well as the electrolyte additive to …

Research And Application Of Key Materials For Sodium-Ion Batteries, Yong-Chang Liu, Cheng-Cheng Chen, Ning Zhang, Liu-Bin Wang, Xing-De Xiang, Jun Chen

Journal of Electrochemistry

Sodium-ion batteries (SIBs) have been considered as a potential large-scale energy storage technology owing to the abundance, wide distribution, and low price of sodium resources. However, the larger and heavier sodium ion as compared to lithium ion makes it difficult to identify appropriate electrode materials with the capability for fast and stable sodium-ion insertion/extraction. Furthermore, the optimization of electrolyte, the matching of cathode and anode materials, and the construction of sodium-ion full batteries with high-performance, high-safety, and low-cost are urgently needed in order to make SIBs commercially available. This review summarizes the up-to-date research progresses in key materials (including cathode, …

Micro/Nano-Structured Electrode Materials For Sodium-Ion Batteries, Shuang Yuan, Yun-Hai Zhu, Sai Wang, Tao Sun, Xin-Bo Zhang, Qiang Wang

Journal of Electrochemistry

Sodium has similar physics and chemical properties to lithium, alternatively, sodium (Na)-ion batteries have again aroused a great deal of interest recently, particularly for large-scale stationary energy storage applications due to the practically infinite sodium resources and low cost. However, the technics and materials for Na-ion batteries are immature. Therefore, development of advanced anode and cathode materials for Na-ion batteries is urgently desired but remains a great challenge. This paper briefly reviews some recent progresses in this field, addressing the morphology effects, as well as functions of carbon composite materials toward Na-ion batteries. Several electrode materials with micro/nano-structures based on …

Continuous Synthesis And Condition Exploration Of Precursor Ni1/3Co1/3Mn1/3(Oh)2 Ternary Cathode Material, Zhi-Jun Jiang, Ya-Li Zhang, Qian Wang, Hui Zhang

Journal of Electrochemistry

Commercial LiNi_1/3Co_1/3Mn_1/3(OH)₂ ternary material is generally prepared by a combination of co-precipitation and solid state reaction method. The particle size distribution and morphology of Ni_1/3Co_1/3Mn_1/3(OH)₂ precursor have a great impact on the electrochemical performance of LiNi_1/3Co_1/3Mn_1/3O₂. In this work, the precursor Ni_1/3Co_1/3Mn_1/3(OH)₂ ternary cathode material was prepared by co-precipitation method with MnSO₄, NiSO₄, and CoSO₄ as raw materials, NaOH as a precipitating agent and NH_{3 …}

Template-Assisted Hydrothermal Synthesis Of Nio@Co3O4 Hollow Spheres With Hierarchical Porous Surfaces For Supercapacitor Applications, Wen Zhou, Xue-Feng Lu, Ming-Mei Wu, Gao-Ren Li

Journal of Electrochemistry

Hollow structures have shown great potentials in a variety of important applications, such as energy conversion and storage. In order to further enhance the performance, the rational design of hollow structures with higher complexity in terms of composition and structure is highly desirable and still remains a great challenge. In this work, an efficient strategy was established for the fabrication of novel NiO@Co₃O₄ hollow spheres (HSs) with hierarchical porous surfaces by silica spheres template-assisted hydrothermal synthesis. The as-fabricated NiO@Co₃O₄ HSs showed high specific surface area of 219.68 m²·g^-1, and significant …

Electrochemical Performance Of Crystalline Li12Si7 As Anode Material For Lithium Ion Battery, Ya-Xiong Yang, Rui-Jun Ma, Ming-Xia Gao, Hong-Ge Pan, Yong-Feng Liu

Journal of Electrochemistry

Crystalline Li₁₂Si₇ is successfully synthesized by heating the mixture of LiH and Si with a molar ratio of 12:7, which avoids the huge difference of the melting points between Li and Si. The electrochemical performance and lithium storage mechanism of the as-prepared Li12Si7 are studied in this work. It is found that only a change in cell volume takes place without a phase change during the lithiation/delithiation of Li₁₂Si₇ at a voltage range of 0.02 ~ 0.6 V, exhibiting a solid-solution lithium storage mechanism. Such a lithium storage process effectively retards the volume effect …

Founding Sap Student User Group (Sug) At Southern Illinois University Carbondale - Siu Sug, Jihoon Park, Siuc Isat

ASA Multidisciplinary Research Symposium

Enterprise Computing has quickly become of paramount importance for businesses vying to survive in today’s unlimited competition market. SAP software has become a front runner and leader of business and technical innovation in the enterprise computing industry. Major fortune 500 companies are using SAP software as their main operating software. As the need for individuals knowledgeable on SAP has increased dramatically, learning SAP is becoming important for the market of employment

Learning And Practicing Data Analytics Using Sap In-Memory Computing, Hong G. Jung, Vincent L. Mitchell, Jihoon Park, Sam Chung

ASA Multidisciplinary Research Symposium

The analysis and organization of Big Data is becoming important in the business industry. Using and understanding ERP (Enterprise Resource Planning) software to interpret Big Data is essential to the evolution of Information System Technology. This research on SAP HANA and SAP Lumira allows us the opportunity to explore.

Balloon Assisted Sounding Rocket Vehicle Concept Study, Benjamin Thompson, Christopher Helmerich, Jared Fuchs, Matthew Haskell, Tate Harriman

Von Braun Symposium Student Posters

No abstract provided.

Development Of A Thrust Stand For Micro-Electric Propulsion, Chloe Mcfadden, Kurt Polzin

Von Braun Symposium Student Posters

No abstract provided.

Optimization Of A High Power Rocket Vehicle For Autonomous Rover Deployment, Davis Hunter, Francis Wessling

Von Braun Symposium Student Posters

No abstract provided.

Model Based Systems Engineeringfor Cubesats, Lloyd Walker, Dale Thomas

Von Braun Symposium Student Posters

No abstract provided.

Product Realization Of A Child’S Occupational Therapy Device Using Nasa’S Systems Engineering Processes, Chris Beckham, Greg Duke

Von Braun Symposium Student Posters

No abstract provided.

Response Of A Doublet To A Nearby Dc Electrode Of Uniform Potential, Christopher L. Wirth, Sri Harsha Nuthalapati

Chemical & Biomedical Engineering Faculty Publications

The electric-field-assisted directed assembly of spherical colloidal particles near an electrode has been studied for nearly three decades. Recently, focus has shifted to the electric-field-assisted assembly and propulsion of nonspherical (i.e., anisotropic) particles. This paper describes calculations and results for a doublet of asymmetric ζ potential and size responding to a dc electric field. The doublet experienced a net vertical force that depended on both the asymmetry in ζ potential and lobe size. In addition, the doublet experienced a net lateral force perpendicular to the applied electric field. The lateral force depended on the difference in ζ potential of the …

Cognitive Measure Of Workload In Multimodal User Interfaces, Maliha Lubna, Paul Collopy, Jeff Hansberger

Von Braun Symposium Student Posters

No abstract provided.

Electromagnetic Forcing As A Damping Method For Combustion Instabilities, Bradley Henderson, Gabriel Xu

Von Braun Symposium Student Posters

No abstract provided.

Systems Generational Evolution, Katherine Burris, Dale Thomas

Von Braun Symposium Student Posters

No abstract provided.

Feasibility Study Of Hall Thruster Fabrication Using Additive Manufacturing, Ethan Hopping, Gabriel Xu

Von Braun Symposium Student Posters

No abstract provided.