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2018

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Voltage Distribution Of Self-Humidifying Air-Cooled Pemfc, Kai-Feng Tan, Wei-Rong Chen, Ming Han, Xue-Xia Zhang Dec 2018

Voltage Distribution Of Self-Humidifying Air-Cooled Pemfc, Kai-Feng Tan, Wei-Rong Chen, Ming Han, Xue-Xia Zhang

Journal of Electrochemistry

In this work, the self-adaptive characteristics of self-humidifying air-cooled PEMFC stack was investigated. The performance and the unit-cell voltage distribution of the stack were measured and analyzed through the unit-cell I-V curve fitting. The operating conditions for this experimental study were set as follows: hydrogen pressure at the anode was 2 bar, the fan power used for the reactant oxygen feed and stack cooling was at 0.3 W, and the duration and time gap of water purged from hydrogen chamber were 1 s and 10 s, respectively. The experimental results showed that the self-humidifying air-cooled PEMFC stack used for this …

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Durability Performance Of The High-Power Fuel Cell System, Ke-Yong Wang, Wei-Yu Shi, Ren-Fang Wang, Jia Liu, Zhong-Jun Hou Dec 2018

Durability Performance Of The High-Power Fuel Cell System, Ke-Yong Wang, Wei-Yu Shi, Ren-Fang Wang, Jia Liu, Zhong-Jun Hou

Journal of Electrochemistry

Fuel cell durability is the crucial challenge in fuel cell vehicle, and the lifetime of more than 5000 hours is believed to be necessary for vehicle application. Few works on durability test of the full fuel cell system have been reported. In this work, the long lifetime HySYS-30 fuel cell system was developed in Sunrise Power based on the improved MEA durability and system control strategy. The durability performance of the system was investigated under vehicle duty cycle for more than 6000 hours, and only 8.1% performance loss was observed, implying that the durability of HySYS-30 fuel cell system could …

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Caging Porous Co-N-C Nanocomposites In 3d Graphene As Active And Aggregation-Resistant Electrocatalyst For Oxygen Reduction Reaction, Lu-Yang Xiu, Meng-Zhou Yu, Peng-Ju Yang, Zhi-Yu Wang, Jie-Shan Qiu Dec 2018

Caging Porous Co-N-C Nanocomposites In 3d Graphene As Active And Aggregation-Resistant Electrocatalyst For Oxygen Reduction Reaction, Lu-Yang Xiu, Meng-Zhou Yu, Peng-Ju Yang, Zhi-Yu Wang, Jie-Shan Qiu

Journal of Electrochemistry

Oxygen reduction reaction (ORR) is the cornerstone reaction of many renewable energy technologies such as fuel cells and rechargeable metal-air batteries. The Pt-based electrocatalysts exhibit the highest activity toward ORR, but their large implementation is greatly prohibiting by unaffordable cost and inferior durability. During electrode manufacturing and electrochemical reaction, severe aggregation of catalyst nanoparticles induced by size effect further limits the operational performance of electrocatalysts. We report a new strategy for fabrication of active and aggregation-resistant ORR electrocatalyst by caging metal-organic frameworks derived Co-N-C nanocomposites in permeable and porous 3D graphene cages via sprayed drying the mixed colloids of ZIF-67 …

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The Presidential Authority To Reserve And Modify National Monuments Under The Antiquities Act, Jesse Knowlden Dec 2018

The Presidential Authority To Reserve And Modify National Monuments Under The Antiquities Act, Jesse Knowlden

University of Cincinnati Law Review

No abstract provided.

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Lifestyle Modifications: Coordinating The Trna Epitranscriptome With Codon Bias To Adapt Translation During Stress Responses, Cheryl Chan, Phuong Pham, Peter C. Dedon, Thomas J. Begley Dec 2018

Lifestyle Modifications: Coordinating The Trna Epitranscriptome With Codon Bias To Adapt Translation During Stress Responses, Cheryl Chan, Phuong Pham, Peter C. Dedon, Thomas J. Begley

Biological Sciences Faculty Scholarship

Cells adapt to stress by altering gene expression at multiple levels. Here, we propose a new mechanism regulating stress-dependent gene expression at the level of translation, with coordinated interplay between the tRNA epitranscriptome and biased codon usage in families of stress-response genes. In this model, auxiliary genetic information contained in synonymous codon usage enables regulation of codon-biased and functionally related transcripts by dynamic changes in the tRNA epitranscriptome. This model partly explains the association between synchronous stress-dependent epitranscriptomic marks and significant multi-codon usage skewing in families of translationally regulated transcripts. The model also predicts translational adaptation during viral infections.

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Rwu's Year In Review, Jill Rodrigues, Justin Wilder, Juan Siliezar, Edward Fitzpatrick Dec 2018

Rwu's Year In Review, Jill Rodrigues, Justin Wilder, Juan Siliezar, Edward Fitzpatrick

Featured News Story

Despite an unexpected loss, this was a great year of progress for Roger Williams University. This was the year we mourned the passing of our beloved president; but from grief, we found inspiration in his legacy to renew an even stronger commitment to empowering students to use their knowledge and skills toward making a positive impact in local and global communities. It also heralded many successes, from state-of-the-art educational facilities added to campus to the first-ever alumnus leading the Board of Trustees, an exciting, new look for the Hawk, and a reinvented mission and identity for University College. As 2018 …

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Uab Joins Gilbert Family Foundation Initiative For Neurofibromatosis Type 1, Alicia Rohan Dec 2018

Uab Joins Gilbert Family Foundation Initiative For Neurofibromatosis Type 1, Alicia Rohan

Browse All News

No abstract provided.

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Small Rna Mgrr Regulates Sensitivity Of Escherichia Fergusonii To Oxidative Stress, Austin Paul Wright Dec 2018

Small Rna Mgrr Regulates Sensitivity Of Escherichia Fergusonii To Oxidative Stress, Austin Paul Wright

Dissertations and Theses

Non-coding small RNAs (sRNAs) are integral to post-transcriptional gene regulation in bacteria. The function of an sRNA is dependent on both secondary structure and the sequence of its unstructured seed region. The sRNA seed region typically base-pairs with target mRNAs to down-regulate the expression of target genes by blocking the ribosome-binding site or by promoting RNase-mediated degradation of the sRNA-mRNA complex. sRNAs have also been shown to increase expression of target genes by releasing RNA secondary structures that block ribosome-binding sites. Selective pressure to maintain sRNA function conserves the sequence of the sRNA seed region, but mutations in mRNA sequences …

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Diel Variability Of Pco 2 And Co 2 Outgassing From The Lower Mississippi River: Implications For Riverine Co 2 Outgassing Estimation, Jeremy H. Reiman, Y. Jun Xu Dec 2018

Diel Variability Of Pco 2 And Co 2 Outgassing From The Lower Mississippi River: Implications For Riverine Co 2 Outgassing Estimation, Jeremy H. Reiman, Y. Jun Xu

Faculty Publications

Carbon dioxide (CO 2 ) outgassing from river surface waters is an important component of the global carbon cycle currently not well constrained. To test the hypothesis that riverine partial pressure of CO 2 (pCO 2 ) and CO 2 outgassing rates differ between daylight and darkness, we conducted in-situ pCO 2 and ambient water measurements over four 24-h periods in the spring and summer of 2018 in the Lower Mississippi River under varying flow regimes. We hypothesized that diel pCO 2 variation will correlate inversely with solar radiation due to light-induced photosynthesis. Despite differing ambient conditions between seasons, we …

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The Weekly Challenger, December 27, 2018, The Weekly Challenger, Et Al Dec 2018

The Weekly Challenger, December 27, 2018, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The December 27, 2018, issue of The Weekly Challenger.

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Household Waste Management Among Riverside Communities And Other Determinants, Aprizal Satria Hanafi, Qomariyatus Sholihah, Martina Martina, Ema Novita Deniati Dec 2018

Household Waste Management Among Riverside Communities And Other Determinants, Aprizal Satria Hanafi, Qomariyatus Sholihah, Martina Martina, Ema Novita Deniati

Media Kesehatan Masyarakat Indonesia

Littering was recognized as an important cause of environmental pollution and was related to health problems. Banjarmasin city has been achieved the predicate of Adipura in 2015, but in reality there were still many drainage that clogged because of the pile of garbage, especially in the river. Management and disposal of household waste was an important issue in the city of Banjarmasin. The purpose of this study was to identify socioeconomic and demographic factors related to family members’ knowledge, practice, and behavior related to household waste management and produce corrective action plans. This study uses cross-sectional design. The study population …

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Changing Scholarly Trends Of Lis Research In Asia: A Scientometric Study Based On Scopus, Vinod Kumar Gautam Mr., Rajani Mishra Dr. Dec 2018

Changing Scholarly Trends Of Lis Research In Asia: A Scientometric Study Based On Scopus, Vinod Kumar Gautam Mr., Rajani Mishra Dr.

Library Philosophy and Practice (e-journal)

Scientometric studies can be of great help not only for researchers and academicians but also for the government officials in setting funds for development as well as policy setting and decision making. Various scientometric studies are being done to assess the publication output of the researchers in the various disciplines, to know their collaboration as well as interdisciplinarity. This present study is furthering the level of the study by assessing the LIS research trend in the Asian countries, using AGR, RCI, CC and PEI etc. as indicators.

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Capsule Integrated Polypeptide Multilayer Films For Effective Ph-Responsive Multiple Drug Co-Delivery, Shichao Zhang, Malcolm Xing, Bingyun Li Dec 2018

Capsule Integrated Polypeptide Multilayer Films For Effective Ph-Responsive Multiple Drug Co-Delivery, Shichao Zhang, Malcolm Xing, Bingyun Li

Clinical and Translational Science Institute

Many applications using drug-carrying biomedical materials require on-demand, localized delivery of multiple therapeutic agents in precisely controlled and patient-specific time sequences, especially after assembly of the delivery vehicles; however, creating such materials has proven extremely challenging. Here, we report a novel strategy to create polypeptide multilayer films integrated with capsules as vehicles for co-delivery of multiple drugs using layer-bylayer self-assembly technology. Our approach allows the multilayered polypeptide nanofilms and preimpregnated capsules to assemble into innovative biomedical materials with high and controllable loading of multiple drugs at any time postpreparation and to achieve pH-responsive and sustained release. The resulting capsule-integrated polypeptide …

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The Internet Of Energy: Architectures, Cyber Security, And Applications, Kun Wang, Yan Zhang, Song Guo, Mianxiong Dong, Rose Qingyang Hu, Lei He Dec 2018

The Internet Of Energy: Architectures, Cyber Security, And Applications, Kun Wang, Yan Zhang, Song Guo, Mianxiong Dong, Rose Qingyang Hu, Lei He

Electrical and Computer Engineering Faculty Publications

The energy crisis and carbon emissions have become two critical concerns globally. As a very promising solution, the concept of Internet of Energy has appeared to tackle these challenges. The Internet of Energy is a new power generation paradigm developing a revolutionary vision of smart grids into the Internet. The communication infrastructure is an essential component for implementing the Internet of Energy. A scalable and robust communication infrastructure is crucial in both operating and maintaining smart energy systems. The wide-scale implementation and development of Internet of Energy into industrial applications should take into account the following challenges:

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Integral Feedback Control Is At The Core Of Task Allocation And Resilience Of Insect Societies, Thomas Schmickl, Istvan Karsai Dec 2018

Integral Feedback Control Is At The Core Of Task Allocation And Resilience Of Insect Societies, Thomas Schmickl, Istvan Karsai

ETSU Faculty Works

Homeostatic self-regulation is a fundamental aspect of open dissipative systems. Integral feedback has been found to be important for homeostatic control on both the cellular and molecular levels of biological organization and in engineered systems. Analyzing the task allocation mechanisms of three insect societies, we identified a model of integral control residing at colony level. We characterized a general functional core mechanism, called the “common stomach,” where a crucial shared substance for colony function self-regulates its own quantity via reallocating the colony’s workforce, which collects and uses this substance. The central component in a redundant feedback network is the saturation …

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Sustainability Challenges Of Al-Rumaitha Irrigation Project In Al-Muthanna Governorate, Sabihat Hamd Eawda, Safir Jasim Husayn Dec 2018

Sustainability Challenges Of Al-Rumaitha Irrigation Project In Al-Muthanna Governorate, Sabihat Hamd Eawda, Safir Jasim Husayn

Uruk Journal of Human Sciences

The available water system requires meeting current and future needs, as low quantities of incoming or low quality will stand in front of economic development plans, which is reflected negatively, especially in the shrinking areas of agricultural land and the small number of crops that will be planted in a manner that puts the economy in decline compared with the steady increase in population.

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First Evidence For Cos2Β>0 And Resolution Of The Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity, Babar Collaboration, Belle Collaboration, R. Cheaib, L. Cremaldi, R. Godang, D. J. Summers, R. Kroeger Dec 2018

First Evidence For Cos2Β>0 And Resolution Of The Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity, Babar Collaboration, Belle Collaboration, R. Cheaib, L. Cremaldi, R. Godang, D. J. Summers, R. Kroeger

Faculty and Student Publications (Open Access)

No abstract provided.

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Integrated Intelligent Systems For Industrial Automation: The Challenges Of Industry 4.0, Information Granulation And Understanding Agents ., N.R Yusupbekov, V.B Tarassov Dec 2018

Integrated Intelligent Systems For Industrial Automation: The Challenges Of Industry 4.0, Information Granulation And Understanding Agents ., N.R Yusupbekov, V.B Tarassov

Chemical Technology, Control and Management

The objective of the paper consists in considering the challenges of new automation paradigm Industry 4.0 and reviewing the-state-of-the-art in the field of its enabling information and communication technologies, including Cyberphysical Systems, Cloud Computing, Internet of Things and Big Data. Some ways of multi-dimensional, multi-faceted industrial Big Data representation and analysis are suggested. The fundamentals of Big Data processing with using Granular Computing techniques have been developed. The problem of constructing special cognitive tools to build artificial understanding agents for Integrated Intelligent Enterprises has been faced.

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Liquid Suspended Fertilizers On Base Wet-Processing Phosphoric Acid Of Kyzylkum ., Sh.Yu Nomozov, U.K Alimov, Sh.S Namazov, A.R Seytnazarov Dec 2018

Liquid Suspended Fertilizers On Base Wet-Processing Phosphoric Acid Of Kyzylkum ., Sh.Yu Nomozov, U.K Alimov, Sh.S Namazov, A.R Seytnazarov

Chemical Technology, Control and Management

There have been determined the composition of liquid complex fertilizers based on low concentrated wet-processing phosphoric acid from washed and calcinated phosphoconcentrated of Kyzylkum. The density and viscosity of the liquid fertilizers were studied at wide temperatures (30-80оС). It was given the list of chemical compounds generated at ammonization of wet-processing phosphoric acid with various impurities. In order to reduce precipitation of residues during the neutralization 26% aqua suspension of bentonite was used as suspendered agent in amount of 1 to 3%. Rheological properties of the nitrogen-phosphate solution show that they are in liquid condition.

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The Task Of Stabilizing Drying With The Help Of Accumulation Material In Case Of Overheating Of The Chamber Under The Action Of Sunlight ., K.T Norkulova, M.M Mamatkulov, B.M Jumaev Dec 2018

The Task Of Stabilizing Drying With The Help Of Accumulation Material In Case Of Overheating Of The Chamber Under The Action Of Sunlight ., K.T Norkulova, M.M Mamatkulov, B.M Jumaev

Chemical Technology, Control and Management

The article deals with the possibilities of temperature stabilization inside the drying chamber with the help of materials having corresponding melting temperatures. The problem of the melting of accumulating material under the action of solar rays is investigated analytically. A precise and approximate solution of the problem of the propagation velocity of the melting boundary is presented. The application of the similarity method for solving the problem of the melting of a paraffin layer is shown. A reduced equation is obtained, which makes it possible to obtain numerical and graphical solutions. Particular cases of the solution of problems on the …

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Synthesis Of 2,5-Dimethylhexine-3-Diol-2.5 By A Heterogeneous Catalytic Method And Its Some Physical And Chemical Properties ., A.T Umrzokov, B.F Muhiddinov, H.M Vopoev, S.E Nurmonov Dec 2018

Synthesis Of 2,5-Dimethylhexine-3-Diol-2.5 By A Heterogeneous Catalytic Method And Its Some Physical And Chemical Properties ., A.T Umrzokov, B.F Muhiddinov, H.M Vopoev, S.E Nurmonov

Chemical Technology, Control and Management

The article examines the processes of heterogeneous-catalytic interaction of acetylene and acetone with the formation of 2,5-dimethylhexin-3-diol-2,5 using copper-bismuth-nickel-kaolin (MVNK) and copper-bismuth-nickel-bentonite (MVNB) catalysts physicochemical constants were determined depending on their nature, content and temperature of the reactions. Quantum-chemical calculations were carried out and the reaction centers of the molecules were shown on their basis.

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Application Of Properties Of Ion Exchange Resing In Sorption Process Of Gold Exstraction ., T.V Ponamaryova, P.I Kushnazarov Dec 2018

Application Of Properties Of Ion Exchange Resing In Sorption Process Of Gold Exstraction ., T.V Ponamaryova, P.I Kushnazarov

Chemical Technology, Control and Management

The application of ion-exchange resins in the sorption process of gold recovery is considered. Presented are: scheme of technological process of synthesis of effective ion exchanger of phospholized gossypol resin; regime of technology for obtaining ion exchanger; technical characteristics of the FGS ionite on the basis of the gossypol resin of the fat and oil industry TSh 86-38: 2006. As a result of the studies carried out during the synthesis, an effective ion exchanger ion is obtained for the extraction of precious metal ions.

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The Method Of Transforming The Liquidated Oil And Gas Production Wells Into Technological Wells For Leaching Salts From Saline Deposits Such As Brine ., O.M Nabiev, T.Z Xaydarov, Sh.T Nabiev Dec 2018

The Method Of Transforming The Liquidated Oil And Gas Production Wells Into Technological Wells For Leaching Salts From Saline Deposits Such As Brine ., O.M Nabiev, T.Z Xaydarov, Sh.T Nabiev

Chemical Technology, Control and Management

The article reveals the essence of the invention, i.e. transformation of abandoned wells into technological wells by leaching sylvinite. The production of potassium fertilizers using the gallium method, reduces the technological cycle, capital investments, operating costs, energy and heat costs, and increases the return on assets of wells.

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Automated Fire Safety System At The Cotton Gin Industry ., Sh.Z Kamalov, N.Z Kamalov Dec 2018

Automated Fire Safety System At The Cotton Gin Industry ., Sh.Z Kamalov, N.Z Kamalov

Chemical Technology, Control and Management

The issues of automating the safety of machines and mechanisms involved in the process of primary processing of raw cotton are considered on the example of the process of pneumatic transport of cotton materials. The proposed automated system for ensuring fire safety of cotton materials moving in pneumatic lines, providing automatic detection of burning cotton materials and preventing their wide distribution.

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Two-Level Fuzzy Adaptive Regulation Of Dynamic Objects ., I.Kh Sidikov, B.U Shomirzaev Dec 2018

Two-Level Fuzzy Adaptive Regulation Of Dynamic Objects ., I.Kh Sidikov, B.U Shomirzaev

Chemical Technology, Control and Management

The questions of constructing and tuning adaptive fuzzy PID-controllers that are widely used in automatic control systems of technological processes in various industries are considered. The method of fuzzy adaption of regulator settings, taking into account the nonlinear properties of the object, is proposed. The optimal values of the PID controller parameters and fuzzy adaptation factor coefficients are determined, which ensure the required quality of the transient process in a closed system with a fuzzy adaptive regulator

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Estimation Of The Covariation Matrix Of Disturbances At The Entrance Of The Controlled Object On The Basis Of Iterative Algorithms ., O.O Zaripov, O.P Shukurova Dec 2018

Estimation Of The Covariation Matrix Of Disturbances At The Entrance Of The Controlled Object On The Basis Of Iterative Algorithms ., O.O Zaripov, O.P Shukurova

Chemical Technology, Control and Management

The problems of formation and construction of stable algorithms for estimating the covariance matrices of input disturbances of the control object based on the methods of successive approximations are considered. Algorithms for the stable estimation of covariance matrices of perturbations at the input of an object are presented based on the concepts of iterative algorithms. The regular algorithms given above make it possible to produce a stable estimation of the covariance matrix of the object noise based on the concepts of the synthesis of adaptive filters and thereby increase the accuracy of the adaptive estimation procedure.

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A Two - Integrated System Of Slaveed Control Of The Speed Of Adjustable Multiple Motoring Electric Drive Water- Removable Pump Installatio ., M.M Xamudxanov Dec 2018

A Two - Integrated System Of Slaveed Control Of The Speed Of Adjustable Multiple Motoring Electric Drive Water- Removable Pump Installatio ., M.M Xamudxanov

Chemical Technology, Control and Management

The article discusses the automatic control system of an adjustable multi-motor electric drive with an electrical connection through a rotor circuit of asynchronous motors with phase rotors and a common inverter driven by a network to provide control of the water supply process of pumping units as part of a water-lifting pumping unit. The system "multi-motor electric drive - pumps - hydraulic pressure net" was developed, equations describing the dynamics of the system were obtained, and the transfer functions of its main elements were determined.

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Optimization Of Data Processing Based On Accounting For Factors Of External Expenses, Regulation And Correction Of Variables ., I.I Jumanov, S.M Xolmonov Dec 2018

Optimization Of Data Processing Based On Accounting For Factors Of External Expenses, Regulation And Correction Of Variables ., I.I Jumanov, S.M Xolmonov

Chemical Technology, Control and Management

Methods and simplified computational schemes for optimizing data processing for systems operating in conditions of limited a priori information, changes in the characteristics of external influences, uncertainty of parameters have been developed. To describe a non-stationary object, non-linear identification models are considered, constraints, input conditions for obtaining possible values of output variables are defined. An approach aimed at using identification technologies based on generalization of capabilities of dynamic models, neural networks (NN), mechanisms for regulating variable computing schemes of structural network components, as well as learning algorithms of the NN is proposed. A generalized algorithm for learning NN based on …

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Fuzzy-Multiple Tasks Of Multicriterial Optimization In Risk Conditions ., T.F Bekmuratov, D.T Mukhamedieva Dec 2018

Fuzzy-Multiple Tasks Of Multicriterial Optimization In Risk Conditions ., T.F Bekmuratov, D.T Mukhamedieva

Chemical Technology, Control and Management

Approaches to solving the optimization problem and solving a fuzzy multicriteria optimization problem under risk conditions are considered. To assess risks in fuzzy conditions, it is proposed to supplement the system of constraints of a standard decision-making task with a set of restrictions on possible losses, namely, for selected scenarios, to build a model of their consequences (damages) as functions of control parameters and impose expert limitations on an acceptable level of relative damage for each scenario.

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Optimization Of The Process Of Functioning Of Multiservice Networks ., A.R Marakhimov, G.B Sherboboyeva Dec 2018

Optimization Of The Process Of Functioning Of Multiservice Networks ., A.R Marakhimov, G.B Sherboboyeva

Chemical Technology, Control and Management

In order to optimize the delay time of information flows in the nodes, multiservice networks propose the application of the theory of fuzzy sets, with the help of which models are developed for calculating the delay time, taking into account the inaccuracy of time, simple, correct operation and aging of information. A fuzzy model for calculating the average message delay time through communication nodes in multiservice networks is given, with each channel of switching nodes being modeled as a queuing network. A single-criterion problem of the optimal distribution of information flows over the channels of switching nodes with ill-defined data …

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