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Numerical Simulations Of Current And Temperature Distribution Of Symmetrical Double-Cathode Solid Oxide Fuel Cell Stacks Based On The Theory Of Electric-Chemical-Thermal Coupling, Cheng-Rong Yu, Jian-Guo Zhu, Cong-Ying Jiang, Yu-Chen Gu, Ye-Xin Zhou, Zhuo-Bin Li, Rong-Min Wu, Zheng Zhong, Wan-Bing Guan

Journal of Electrochemistry

Solid oxide fuel cell (SOFC) is a high-efficient clean conversion device for future energy management. Because of the low antioxidant reduction ability and complex thermal stress, the structure of traditional asymmetrical thin anode-supported planar SOFC is easily to be broken under stack operating conditions. To overcome these defects, a new complete symmetrical SOFC based on double-sided cathodes was developed. To study the influences of gas flow direction and current collection mode on the cell performance inside stack, a numerical model was established by finite element method based on the theory of electro-thermo-chemo multiphysical coupling. By applying this model, the molar …

Synergistic Effect Of Dissolving O2 And Wavelength On The Photo-Assisted Anodic Deposition Of Ceo2 Thin Films, Tong-Zheng Jin, Yu-Meng Yang, Sheng-Hui Fan, Guo-Ying Wei, Zhao Zhang

Journal of Electrochemistry

Cerium dioxide (CeO₂) thin films have been applied as new material in many technical fields such as solid oxide fuel cells, catalysts, UV absorbents, pharmacology, and coatings for corrosion protection of many metals and alloys. Electrodeposition is widely considered to be one of the best preparation methods for CeO₂ film. In this work, the CeO₂ films were prepared by photo-assisted anodic deposition in the bath solutions containing 0.05 mol·L^-1 cerium (III) nitrate, 0.1 mol·L^-1 ammonia acetate and 70% (V/V) ethanol onto 316L stainless steel (SS) surface. The synergistic effects of …

Electrochemical Determination Of Dopamine Based On Metal-Substituted Polyoxometalates Composites, Yi-Fei Xing, Na Li, Xiao-Fang Wen, Hong-Yan Han, Min Cui, Cong Zhang, Ju-Jie Ren, Xue-Ping Ji

Journal of Electrochemistry

In this report, a dopamine electrochemical sensor based on metal-substituted polyoxometalates and reduced graphene oxide (RGO) composite was successfully constructed. The K₂H₂SiW₁₁NiO₃₉·xH₂O (SiW₁₁Ni) was synthesized by hydrothermal method, while the RGO was prepared by Hummers' method and chemical reduction method. The above-mentioned materials were characterized by SEM, FTIR and XRD. The as-synthesized SiW₁₁Ni and RGO composites were modified on the surface of glassy carbon electrode (GCE) by drop coating method, and the sensing interface (SiW₁₁Ni-RGO/GCE) was successfully constructed. The electrochemical properties of …

Preparations And Properties Of Low Cost Sulfide Solid Electrolytes Li6-XPs5-XClX, Na-Chuan Yang, Yu Wang, Yi Shuai, Kang-Hua Chen

Journal of Electrochemistry

With the shortage of energy and environmental pollution, the storage of electric energy is getting more attention all over the world. In order to improve the energy density and safety performance of batteries, uses of solid electrolyte become more and more popular. However, because the conductivity of solid electrolyte is not comparable to that of liquid electrolyte, the solid electrolyte application has certain limitations. With the efforts of researchers from various countries, there are several different solid electrolytes having better conductivity, for instance, sulfide solid electrolyte and oxide solid electrolyte. Sulfide solid electrolyte is a highly promising solid electrolyte material …

Step-By-Step Modification Of Graphite Felt Electrode For Vanadium Redox Flow Battery, Jing-Yuan Lou, Dong-Jiang You, Xue-Jing Li

Journal of Electrochemistry

As a well-known electrode material of the vanadium redox flow battery (VRFB),graphite felt electrode is the frequently-used electrode material in VRFB, and its low electrochemical activity is one of the key factors for the low power density of VRFB. In this work, we proposed a step-by-step modification method, which used KMnO₄ to oxidize graphite felt first and then placed in an activation solution to excite its reactivity, to improve the electrochemical performance of the graphite felt electrode. According to the results from cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) characterizations …

Pitting Behaviors Of Passivated And Trans-Passivated 304 Stainless Steel, Jing Shen, Zi-Ming Wang, Da-Jiang Zheng, Guang-Ling Song

Journal of Electrochemistry

In order to further understand the passivation and trans-passivation behaviors of 304 stainless steels, the samples were pretreated under different polarization potentials and their corrosion behaviors were investigated. It was found that the pitting potential of the untreated sample was the same as that of the sample treated with 1.1 V trans-passivation potential, while the pitting potential of the sample treated with 0.5 V passivation treatment was the highest. This observation was further verified by the SKP results. According to SEM observations, the surface of the untreated sample preserved a polishing morphology, while the surface of the 0.5 V passivation …

Arganun (Organon) - In The Outlook Of Medieval Eastern Thinkers, Saodat Djurabekova

Eurasian music science journal

The Uzbek people have a very rich, worthy ancient history. The discoveries by many scientists and archaeologists of our country confirm the huge contribution of Central Asia to the development of human beings. During very long years of historical development, many great scientists in the fields of science, culture and art came out among our people. They have gratefully served for the progress of mankind. In this way, they raised the status of the nations of the East. Oriental scholars in their musical brochures, tried to comment not only on the musical-theoretical and practical sciences of the East, but also …

Rsif Weekly Vol.1 No.29, Regional Scholarship And Innovation Fund (Rsif)

Rsif Newsletters

No abstract provided.

Dividing Flow At A 90° Open Channel Junction., I. Rashwan, Tarek Abdel-Hamed Saafan

Mansoura Engineering Journal

A theoretical model for division of flow through T-junction over a horizontal bed was obtained for subcritical steady flow through main, extension and branch channels of equal widths. The new proposed model was derived with the aid of continuity, energy and momentum equations. For a given inflow discharge, the water depth and the width of the channels, using the present model, the downstream depth and discharge could be determined. Experimental data from previous studies were used to verify the proposed new model. The deduced model was found in good agreement with the observations It was found that a linear relationship …

Effects Of Covid-19 On Education In Healthcare And Stem, Jessica Hallett, Santanu De

Biology Faculty Articles

The Coronavirus Infectious Disease 2019 (COVID-19) pandemic halted face-to-face classes in most schools, colleges, and universities worldwide, necessitating virtual instruction. This reformation of academics impacted every field of study, especially those students in the areas of Science, Technology, Engineering, and Mathematics (STEM), and in the realm of healthcare science education. Ranging from middle/high school to undergraduate and graduate programs, STEM degrees entail rigorous curricula integrating extensive lectures on theoretical topics, and laboratory exercises to apply those concepts in a practical setting. Likewise, healthcare education involves hands-on, clinical lab components working on patients, guided by supervisors. The guidelines developed by the …

Matching Of Pv Power Systems With Electrical Loads Using Graph Theoretic Modeling Approach., Magdy Mohamed El-Saadawi, Mohamed Adel El-Sayes, M. Abdel-Wahab

Mansoura Engineering Journal

The quality of load matching in a photovoltaic power system (PVPS) determines the system performance and the degree or the solar cells utilization. In a good matched system, the operation of the load-line is close to the maximum power-line of the solar cell (SCA) generator. This paper presents a new methodology for modeling a stand alone PVPS using the Graph Theoretic Modeling (GTM) Approach. The studied system composed of a directly connected SCA generator-dc motor supplying different load types. A computer program (written in MATLAB 6) has been developed to model the studied system. The computer program is then applied …

Linear Programming Based Approach For Generation Rescheduling And Load Shedding To Alleviate Power System Overloads., Mohamed Ibrahim Ibrahim

Mansoura Engineering Journal

This paper presents a linear programming (LP) based approach for the alleviation of line overloads by generation rescheduling and load shedding. The algorithm is based on solving a linearized set of optimal equations. The objective function for generation rescheduling is to minimize the linearized system operating cost while satisfying the system equality and inequality constraints. In respect to load shedding scheme, the objective function is to minimize the total load demand to be shed taking into account the operating constraints of the maximum load that can be shed; to ensure a minimum service at each bus; and the step of …

Field Oriented Control Of Hybrid Stepping Motor., Farouk Abdel Kader, Hassan Eldeeb, Ahmed Kalas, M. Dessouki

Mansoura Engineering Journal

The strategy of controlling the stepping motor is changed in this research using the field oriented control, by taking over control principles from ac motors. In this purpose two-phase rotor oriented mathematical model of the motor is deduced. Then the new control strategy of the self -commutated motor, based on active current control is proposed the effect of this control strategy with and without filtered voltages have been studied by numerical simulation using matlab simulink toolbox.

Analysis Of Vapor Condensation Process From Moist Air., Mohamed Gamal Wasel, M. Mousa, Marzouk Omer

Mansoura Engineering Journal

Condensation process, from moist airflow over flat plate, is investigated theoretically and experimentally. This process has many important engineering applications, which are concerning with moist air treatment. In The theoretical analysis of the present work, the flow is assumed to be laminar, steady and of constant physical properties. The process is described by continuity, momentum, energy and concentration partial differential equations expressed in Cartesian coordinates system. Due to the nature of the studied problem and with proper transformation of the problem dependent and independent variables, these governing equations are transformed to set of ordinary differential equations. Accordingly, one can obtain …

Jet Characteristics Using Image Digitizing Technique., Abdel-Rahim Abdel-Rahim, Mohamed Hassan Kalaf, Salah Hassan El-Emam, M. El-Khayat

Mansoura Engineering Journal

Struetural features resulting from the interaction of a turbulent jet issuing transversely into a uniform stream are deseribed with the help of flow visualization. Jets to erossflow velocity ratios have been investigated with primary goal of introducing a new experimental technique to study characteristics of jets in crossflow. The technique introduced in this study called image digitizing technique. It is based on capturing series of images using a high speed digital camera then processing the obtained images. Accordingly, a new definition for the average image has been introduced and applied. The obtained conclusions are; Image digitizing technique, provided and used …

Knowledge Sharing Of E-Resources Among Academic Staff College Of Central University Pondicherry., Shanmugam Ap, Balasubramanian P

Library Philosophy and Practice (e-journal)

Knowledge is today viewed as a factor of production together with land, labour and capital It is of one of the innate inheritances endowed in every normal human being. Specifically, every individual has some level of knowledge. Knowledge sharing has multidimensional effects on a higher educational institution, such as improving work performance, among which creativity is one of the most important parts. This study aims to examine the effects of e-resource knowledge sharing among the members of academic staff college, Pondicherry central university Pondicherry. This study is the first research regarding the relationship between knowledge sharing and individual creativity, and …

Arabic Document Image Classification Using Neural Networks., Abdallah Al-Khorabi, Mohamed Mansour

Mansoura Engineering Journal

The Neural Network Arabic Document Image Classification System (NNADICS) is an adaptive Arabic document classifier. By training NNADICS on a number of different document image types, NNADICS behaves as a multiple classifier, since it is capable for distinguishing between multiple document image types. NNADICS is designed, built, tested and evaluated. After training NNADICS a document image is applied to the system for classification. Before that the document image is scanned, pre-processed and binarized, and then applied to NNADICS to classify its contents to text, geometric, or photographic image type. NNADICS achieved an average of a 86% recognition rate as it …

Minimum Cost Design Of Irrigation Canal Sections., M. Shamaa, H. Abdel-Gawad

Mansoura Engineering Journal

Design of minimum cost canal section requires minimization of construction costs per unit length of the canal. The aim is to minimize a nonlinear objective function subject to a nonlinear equality constraint. The objective function has been expressed as the cost per unit length of the canal for excavation and lining. Manning's equation was used as an equality constraint. Using the method of Lagrange multipliers, the necessary equations for the design of minimum cost irrigation canal of trapezoidal, rectangular, triangular shapes can be obtained. The optimal dimensions for the previous canal sections without freeboard could be obtained from a set …

Surface Roughness Measurement Using Light Sectioning Method And Computer Vision Techniques., N. Elhamshary, Ossama Badie Abouelatta, Ibrahim Mohamed Amar, Elamir Gadelmawla

Mansoura Engineering Journal

The development of new industries has led to a requirement for super-smooth surfaces and for the ability to measure surfaces of industrial parts accurately; therefore, the measurement of engineering surface roughness is becoming increasingly important. In this work, a new approach is introduced to measure surface roughness by combining a light sectioning microscope and a computer vision system. This method has the advantage of being non-contact. The light sectioning microscope is used to view roughness profiles of the specimens to be measured and the vision system is used to capture images for the viewed profiles. A special program (named SRLSVision) …

Human-Machine Teaming And Its Legal And Ethical Implications, Jim Q. Chen, Thomas Wingfield

Military Cyber Affairs

Humans rely on machines in accomplishing missions while machines need humans to make them more intelligent and more powerful. Neither side can go without the other, especially in complex environments when autonomous mode is initiated. Things are becoming more complicated when law and ethical principles should be applied in these complex environments. One of the solutions is human-machine teaming, as it takes advantage of both the best humans can offer and the best that machines can provide. This article intends to explore ways of implementing law and ethical principles in artificial intelligence (AI) systems using human-machine teaming. It examines the …

Three Emerging Innovative Technologies Required For Cyber Operations To Execute Commander’S Intent At Machine Speed, Andrew Stewart

Military Cyber Affairs

Decision advantage for the DoD and Combined Cyber Operations results from the secure, seamless, and rapid maneuver of data and information. In the DoD’s 2018 Artificial Intelligence Strategy, the DoD recognized that it must, “put in place key building blocks and platforms to scale and democratize access to AI. This includes creating a common foundation of shared data, reusable tools, frameworks and standards, and cloud and edge services.”[1] More than ever, integrated, adaptive cyber operations provide the means of maneuver for data to enable DoD’s decision advantage-based goals. To support this vision, the integrated implementation three innovative cyber technologies …

Assessing Impacts Of 5th Generation (5g) Cellular Telecommunications On Internet Of Things (Iot) Deployments, Michael Love, Marwan Jamal

Military Cyber Affairs

The Internet of Things (IoT) is emerging as a primary enabler of the transformation to digital business services in today’s economy. At the same time, 5^th Generation (5G) cellular transport technology is emerging as a viable means to support IoT data requirements. Although 5G is still in its infancy, DoD leaders need to understand the impacts that 5G will have on IoT projects as there are several challenges involved with integrating 5G into IoT. In order to achieve the maximum benefits of high bandwidth, low latency and superior performance, an entirely new grid of cell sites and access units …

The Influence Of Information Power Upon The Great Game In Cyberspace: U.S. Wins Over Russian Meddling In The 2018 Elections, Joseph H. Schafer

Military Cyber Affairs

The 2018 U.S. pivot in information and cyberspace degraded Russian operations in the 2018 election. Following pervasive Russian information power operations during the U.S. 2016 elections, the United States progressed from a policy of preparations and defense in information and cyberspace to a policy of forward engagement. U.S recognition of renewed great power competition coupled with Russia’s inability to compete diplomatically, militarily (conventionally), or economically, inspires Russia to continues to concentrate on information power operations. This great game in cyberspace was virtually uncontested by the U.S. prior to 2017. Widespread awareness of Russian aggression in 2016 served as a catalyst …

Managing Disaster In Select Institutional Libraries In Delhi, Vikas Singh

Library Philosophy and Practice (e-journal)

Abstracts:

The present paper seeks to contribute some insights into the different potential disasters that libraries are vulnerable to. The study is primarily built upon a comprehensive review of the literature. Further, the study is divided into two parts; first part, covers different disasters, policies, insurance, and role of the government in managing such disasters. The second part of the study throw light on the level of preparedness for mitigating different disasters, frequency of inspection of the equipment’s, safety guidelines and so on, to lessen the impact of disasters, basic strategies to protect any disaster in the library, frequency of …

Research Productivity And Collaboration Pattern Of National Institute Of Science Education And Research (Niser), Bhubaneswar During 2008-2019: A Scientometrics Study, Bijayananda Pradhan, Sidhartha Sahoo, Pritam Kumar Pati, Shriram Pandey

Library Philosophy and Practice (e-journal)

This paper aims to evaluate the quantitative growth and development of research productivity of National Institute of Science Education and Research (NISER), Bhubaneswar in terms of publications as reflected in Scopus database. This study analyzed annual growth of publications, most preferred journals, open access publishing journals, Subject wise distribution of papers, top cited papers during the year 2008-2019. The study also analyzes country, organization collaboration and funding bodies in National Institute of Science Education and Research Bhubaneswar. The study assesses the intellectual output of the researchers produce by NISER and the findings of the study will be a matter of …

Aamodt Litigation Settlement Completion, United States 116th Congress

Native American Water Rights Settlement Project

Amends the Aamodt Litigation Settlement Act (Pub. L. 11-291) to increase funding for Pueblo Water Facilities from $106.4 million to $243.4 million and making available $137 million for Regional Water System funding.

Montana Water Rights Protection Act, United States 116th Congress

Native American Water Rights Settlement Project

The purposes of this Act are: (1) to achieve a fair, equitable, and final settlement of claims to water rights in the State of Montana, and in recognition of article I, and section 3 of article IX, of the Montana State Constitution for (A) the Confederated Salish and Kootenai Tribes of the Flathead Indian Reservation; and (B) the United States, for the benefit of the Tribes and allottees; (2) to authorize, ratify, and confirm the water rights compact entered into by the Tribes and the State, to the extent that the Compact is consistent with this Act; (3) to authorize …

Navajo-Utah Water Rights Settlement Act, United States 116th Congress

Native American Water Rights Settlement Project

The purposes of this section are: (1) to achieve a fair, equitable, and final settlement of all claims to water rights in the State of Utah for (A) the Navajo Nation and (B) the United States, for the benefit of the Nation; (2) to authorize, ratify, and confirm the agreement entered into by the Nation and the State, to the extent that the agreement is consistent with this section; (3) to authorize and direct the Secretary (A) to execute the agreement and (B) to take any actions necessary to carry out the agreement in accordance with this section; and (4) …

Recent Advances And Machine Learning Techniques On Sickle Cell Disease, Noorh H. Alharbi, Rana O. Bameer, Shahad S. Geddan, Hajar M. Alharbi

Future Computing and Informatics Journal

Sickle cell disease is a severe hereditary disease caused by an abnormality of the red blood cells. The current therapeutic decision-making process applied to sickle cell disease includes monitoring a patient’s symptoms and complications and then adjusting the treatment accordingly. This process is time-consuming, which might result in serious consequences for patients’ lives and could lead to irreversible disease complications. Artificial intelligence, specifically machine learning, is a powerful technique that has been used to support medical decisions. This paper aims to review the recently developed machine learning models designed to interpret medical data regarding sickle cell disease. To propose an …

Signature Identification And Verification Systems: A Comparative Study On The Online And Offline Techniques, Nehal Hamdy Al-Banhawy, Heba Mohsen, Neveen I. Ghali Prof.

Future Computing and Informatics Journal

Handwritten signature identification and verification has become an active area of research in recent years. Handwritten signature identification systems are used for identifying the user among all users enrolled in the system while handwritten signature verification systems are used for authenticating a user by comparing a specific signature with his signature that is stored in the system. This paper presents a review for commonly used methods for preprocessing, feature extraction and classification techniques in signature identification and verification systems, in addition to a comparison between the systems implemented in the literature for identification techniques and verification techniques in online and …