2,289 research outputs found
Study of ion mobility characteristics and morphology of some electrochemically-synthesised polypyrroles
This paper reports the diffusion coefficients of various dopant counter-anions into electrosynthesised polypyrrole films, the cyclic voltammetry behaviour of the doped polymers and the effects of the electrolyte on the morphology of the polymer. The diffusion properties of electrochemically-prepared poly(N-dodecylpyrrole) and polypyrrole films were investigated in electrochemical cells containing lithium perchlorate, tetramethylammonium chloride and sodium dodecylbenzenesulfonate, and the effects of the size of the ions on their diffusion coefficients are discussed
Development and testing of the Mars Rover Mobility Platform for educational and research purposes
Mars exploration has a long history, but there were only four roving vehicles which successfully operated on its surface (e.g. [1]). Main reasons for this are the mission cost and complexity. This paper describes a Mars Rover Mobility Platform for educational and research purposes developed at Kingston University of London. This platform utilises off-the-shelf components to minimise the cost of the project, and is designed to allow for future improvement. The rover is targeted to meet university research and educational objectives. This paper describes the design, manufacturing and control system of a robotic vehicle. The emphasis of this paper is the implementation of the control system. The investigation in locomotive sub-system and its traction performance was done [4]. The rover was manufactured in-house and its manufacturing method and its main components will be described. The control of the vehicle was done using python programming language and implemented on Raspberry Pi 2B+ controller. The communication was done via Wi-Fi using socket connection stream to identify the TCP/IP of the server and connect to the client. Finally, the testing operation was conducted by producing a qualitative comparison between the actual performance and the specified requirements. The rover design reported here achieved climbing capability for the slopes of 23o, the turning radius of zero degrees. The final mass of the rover is 18 kg including allowance for the payload. The rover is able to reach a velocity of 5 cm/s
A Review and an Approach of Flying Electric Generators as Alternate Source of Energy
This paper presents a review of flying electric generators which are used to harness kinetic energy in powerful, persistent high altitude winds. It has been found that FEGs could give individual output of up to 40MW. It is a lighter wind turbine that rotates about a horizontal axis in response to wind, generating electrical energy. This electrical energy is transferred down for immediate use, or to a set of batteries for later use, or to the power grid. This paper presents the critical analysis of existing literature which is relevant to flying electric generator Though, the literature consists of a lot many research contributions, but, here, we have analyzed some important research and review papers. The existing approaches are categorized based on the basic concepts involved in the mechanisms. The emphasis is on the concepts used by the concerned authors, the database used for experimentations and the performance evaluation parameters. Their claims are also highlighted. Finally, the findings are summarized related to the studied and analyzed research papers. Paper concludes with the motivation behind identified problem
Reliability based robust design optimization based on sensitivity and elasticity factors analysis
In this paper, a Reliability Based Robust Design Optimization (RBRDO) based on sensitivity and elasticity factors analysis is presented. In the first step, a reliability assessment is performed using the First-and Second Order Reliability Method (FORM)/ (SORM), and Monte Carlo Simulation. Furthermore, FORM method is used for reliability elasticity factors assessment, which can be carried out to determine the most influential parameters, these factors can be help to reduce the size of design variables vector in RBRDO process. The main objective of the RBRDO is to improve both reliability and design of a cylindrical gear pair under uncertainties. This approach is achieved by integration of two objectives which minimize the variance and mean values of performance function. To solve this problem a decoupled approach of Sequential Optimization and Reliability Assessment (SORA) method is implemented. The results obtained shown that a desired reliability with a robust design is progressively achieved
Time Series Study of Rhino Habitat and its Impact on Rhino Population in Gorumara National Park through Remote Sensing Technology
Gorumara National Park located within the flood plains of Jaldhaka and Murty river in the Dooars area of Northern West Bengal has a mosaic of natural vegetation consisting of tall grasslands, woodlands, tropical semi-evergreen forests and tropical moist deciduous forests, part of which get inundated in recurring floods. The Greater Indian One Horned Rhinoceros which is the flagship specie of this National Park has positively responded to the regular Wild Life Habitat Management regime introduced since 1995 showing trends of steady increase in its population as the habitat manipulation resulted in the increase of the Rhino habitat. This review tries to establish the Rhino population dynamics vis a vis increase in Rhino habitat using Remote sensing technology over the years since the area comes under purview of Protected Area network management
Essentials of endorheic basins and lakes: a review in the context of current and future water resource management and mitigation activities in Central Asia
Endorheic basins (i.e., land-locked drainage networks) and their lakes can be highly sensitive to variations in climate and adverse anthropogenic activities, such as overexploitation of water resources. In this review paper, we provide a brief overview of one major endorheic basin on each continent, plus a number of endorheic basins in Central Asia (CA), a region where a large proportion of the land area is within this type of basin. We summarize the effects of (changing) climate drivers and land surface-atmosphere feedbacks on the water balance. For the CA region we also discuss key anthropogenic activities, related water management approaches and their complex relationship with political and policy issues. In CA a substantial increase in irrigated agriculture coupled with negative climate change impacts have disrupted the fragile water balance for many endorheic basins and their lakes. Transboundary integrated land and water management approaches must be developed to facilitate adequate climate change adaptation and possible mitigation of the adverse anthropogenic influence on endorheic basins in CA. Suitable climate adaptation, mitigation and efficient natural resource management technologies and methods are available, and are developing fast. A number of these are discussed in the paper, but these technologies alone are not sufficient to address pressing water resource issues in CA. Food-water–energy nexus analyses demonstrate that transboundary endorheic basin management requires transformational changes with involvement of all key stakeholders. Regional programs, supported by local governments and international donors, that incorporate advanced adaptation technologies, water resource research and management capacity development, are essential for successful climate change adaptation efforts in CA. However, there is a need for an accelerated uptake of such programs, with an emphasis on unification of approaches, as the pressures resulting from climate change and aggravated by human mismanagement of natural water resources leave very little time for hesitation
KH2PO4 improves cellulase production of Irpex lacteus and Pycnoporus sanguineus
The optimization of cellulase production by Irpex lacteus and Pycnoporus sanguineus was investigated. Fractional factorial design was conducted to determine significant variables and interactions. Response surface methodology was applied through Box-Behnken design to determine the optimum level of each factor on cellulase production. The optimal conditions of culture media were (g/L): for I. lacteus CaCl2.2(H2O) 0.3, MgSO4.7(H2O) 0.3 and KH2PO4 3, while for P. sanguineus was CaCl2.2(H2O) 0.1, MgSO4.7(H2O) 0.2 and KH2PO4 9. This optimized medium improved cellulase production, especially β-glucosidase activity values for I. lacteus. KH2PO4 was found in this work to be a useful mineral compound for cellulolytic production.Fil: Rodríguez, María Daniela. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Departamento de Bioquímica Clínica. Laboratorio de Biotecnología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; ArgentinaFil: Alonso Paiva, Iván Mathias. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Departamento de Bioquímica Clínica. Laboratorio de Biotecnología Molecular; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; ArgentinaFil: Castrillo, María Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Departamento de Bioquímica Clínica. Laboratorio de Biotecnología Molecular; ArgentinaFil: Zapata, Pedro Dario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste; Argentina. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Departamento de Bioquímica Clínica. Laboratorio de Biotecnología Molecular; ArgentinaFil: Villalba, Laura Lidia. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Departamento de Bioquímica Clínica. Laboratorio de Biotecnología Molecular; Argentin
FinDoctor-Interactive Android Clinic Geographical Information System Using Firebase and Google Maps API
Health is a very important thing for human life. Health must be maintained for human survival. This is the main reason someone is looking for a doctor as fast and appropriate in dealing with the illness or commonly called a check-up. The number of processes that must be done by patient while seeing the doctor can make the patient feels uncomfortable. Departing from these problems, a system should facilitates the relationship between patient and doctor in a more efficient way. This research proposes a mobile Android and web application to facilitate the needs between doctors and patients. The designed application using MySQL as the main data storage like data of doctors, patients, clinics, and doctor#39s assistant. Firebase Storage is use for saving additional data such as doctor#39s files, or photos. The system also uses other Firebase service that are Firebase Real-Time Database to handle chat data and Firebase Notification to create notifications. The application also uses Google Maps API to support GIS
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