Dungan Luisa

Dungan Luisa
Polytechnic University of Timisoara · Department of Mechanical Machinery, Equipment and Transport

Doctor of Engineering

About

29
Publications
2,468
Reads
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78
Citations
Citations since 2016
12 Research Items
65 Citations
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2016201720182019202020212022051015202530
2016201720182019202020212022051015202530
Introduction
Development of air quality monitoring station, mechanical engineering, automation and control systems, pollutant dispersion, locomotives, optimization, railway engineering, noise and vibration for rail transport, locomotives and air pollution.

Publications

Publications (29)
Article
Full-text available
The concept of academic spin-off (AS) has witnessed an increase in attention due to its effectiveness in solving industry problems using core technology and knowledge from academia. Most studies based on US and western Europe experiences have presented the main key factors for academic spin-offs. The present study aims to address a literature gap r...
Article
Full-text available
Smart mobility represents the future for many of today’s cities and is part of the smart city concept. Besides all its characteristics, the smart city concept aims to use the IoT (Internet of Things) technology to improve the citizens quality of life through a secure and efficient administration of city resources. The exponential growth of populati...
Conference Paper
Full-text available
The coronavirus pandemic marked a new era for higher education institutions with massive challenges regarding adaptation to online resources and the implementation of a hybrid education system in low risk areas. Due to rapid changes in all aspects of student life, universities focused on providing the best resources and incentives for student engag...
Article
Full-text available
First-year students undergo several transformations like the transition from high school to university schedules, teaching methods, and discipline specificities to social changes that come with meeting new colleagues or moving to other locations far from family and friends. The COVID-19 outbreak brought additional concerns and uncertainties once ed...
Conference Paper
Full-text available
The transition from high school to university brings many changes in the lives of 1st year students. They meet new colleagues, some of them move to other cities relatively far from their families and must adapt also to different type of schedules, teaching methods, teacher personalities and discipline specificities. Besides all these changes, the C...
Article
Full-text available
As atmospheric pollution continue to be a significant issue on global level, but with a particular importance at European Union level, the air pollution reduction policies will continue to be enforced in the next decades. At EU level, especially on most developed countries, NO2 and Particulate Matter (fine and coarse fractions) remain an acute prob...
Article
Nowadays demand for clean energy and new solutions for renewable energy carriers makes it a challenge to find new substrates that can be used for production of biofuels. In this context the present paper aims to present possible solutions of substrate mixtures using materials that exist in abundance at least in the western part of Romania. Conclusi...
Article
Full-text available
Nowadays the need for renewable resources becomes more and more stringent. Biomass remains one of the most important sources of energy, being used directly or by chemical conversion processes in order to produce clean energy. Relative to this aspect, the present paper proposes the direct approach, by analyzing to biomass type materials (topinambur...
Article
Full-text available
Academic spin-offs bring researchers together, foster experience, sharing a creative atmosphere with the purpose of creating new products/services in order to commercialize them. University spin-offs are an important vehicle for knowledge diffusion and economic growth. Despite their importance, little research exists in spin-off performance or impa...
Article
Full-text available
The economy's growth potential is determined by the country's ability to sustain the level of income and returns to investments. A country's wealth depends on the competitiveness of firms and on the capabilities of its entrepreneurs and managers. Companies achieve competitive advantage through acts of innovation. Although innovation is the engine o...
Conference Paper
Greenhouses are a sustainable solution for the food production. Ecologic greenhouses optimize the consumption of resources, leading to a minimal impact on the natural and social environment and thus improving the quality of life on short, medium and long term. The paper presents experimental tests performed in a greenhouse, the energetic and econom...
Article
Full-text available
In a world facing unprecedented challenges, entrepreneurs must focus their attention towards new opportunities to improve their products and services for higher turnovers. Innovation is the key that solves this challenge. In the scholarly literature, innovation has a wide range of approaches to conceptualizing. Innovation is reworking of an old ide...
Article
The railway traffic is an important source of nanoparticles emissions. Railway transport presents real challenges as society tries to ensure a more environmentally sustainable future. Transport of goods and people with railways is generally considered as the most environmentally friendly means of transportation. Therefore, the high mass concentrati...
Article
Full-text available
This paper presents some aspects regarding the noise pollution of the railway polling stock vehicles. The noise level depends both on the railway configuration and the technical solution of the railway infrastructure and the limit values for the noise emission are presented in the technical specification for interoperability railway vehicles. All t...
Article
Comfort of railway vehicles is one of the fundamental problems in evaluating the quality of these vehicles. Creating a vehicle to ensure good comfort and health of passengers should be the result of complex work of creative professionals from various fields, namely: engineers, doctors, physicians, psychologists, architects and industrial aesthetici...
Article
Full-text available
The process of modernisation of the diesel hydraulic locomotive, i. e. the changing of the Sulzer engine, old over 50 years as concept, was necessary. Thus, the replacement with a Caterpillar 3508 B engine and a heat exchanger with three circuits was necessary to fit into account the evolution of technique and the pollution standards.
Article
Full-text available
The LIDAR (LIght Detection And Ranging) technique is based on the interaction of a laser beam with atmospheric compounds (molecules, gases, clouds) via elastic-inelastic or resonant-nonresonant processes (scattering, absorption, fluorescence), relative to the radiation of the laser beam. By analyzing the detected backscattered radiation, suitable a...
Article
Full-text available
Converting compression ignition engines to run on biogas raises specific problems that need to be addressed before undergoing such transformations. A theoretical study was developed for evaluating various factors when considering the conversion of a heavy duty diesel engine to biogas fuelling in an installation featuring cogeneration of heat and po...
Article
The railway traffic is an important source of nanoparticles emissions. Railway transport presents real challenges as society tries to ensure a more environmentally sustainable future. Transport of goods and people with railways is generally considered as the most environmentally friendly means of transportation. Therefore, the high mass concentrati...
Article
During operation of electric locomotives there is the possibility of wheel spinning on the discs bandages. The main cause leading to rotating bandages is their thermal request during braking failure of locomotive while operation. Kinetic energy in the locomotive braking is converted into heat which is transmitted to the bandage and derailed. Becaus...
Article
Full-text available
Presently the scientific community is focussing on the reducing of environmental pollution, which affects directly or indirectly on human health. The main concern of scientists is to determine levels of pollution and finding new ways to reduce pollution, particularly chemical pollution. It is known that the transports occupies one of leading places...
Article
Full-text available
The primary aim of this study has been to analyze and describe the process of capturing carbon dioxide from the flue gas by means of chemical absorption. A 35 wt% aqueous monoethanolamine solution has been selected for removing CO(2) from the flue gas stream. Separation of CO(2) has been carried out in a packed bed absorber. Inlet flue gas CO(2) co...
Article
Full-text available
It is known that cross roads are intensively polluting surface sources, first of all because of the high intensity of traffic, but also due to the very slow velocities of the motor driving cycles that occur, disadvantaged also by the old status of the fleet. As result, high momentum values of NO(x) and CO are recorded. The development of a modern c...
Article
Full-text available
The object of the paper focuses on a new technology of waste biomass co-firing with fossil coal that is a possibility to use existing national energy resources and contribute to a clean energy production. The paper is based on experimental research and was supported by national and EU research programs. The experiments conclude that the technology...
Article
Full-text available
The paper focuses on a novel approach concerning a co-combustion technology of waste with fossil fuel (coal) in fluidized bed on a 0,2 MJ pilot, with special regard to the emission reduction in the flue gases (particles, NOx, SO2), according to state of art technology, in order to meet the values stipulated by national laws. Supplementary, some con...
Article
Full-text available
Generally, kinetic energy in the locomotive braking is converted into heat that is transmitted to the bandage. Because of overloading of the bandaged wheels the phenomena of bandages weakening combined with tread defects appears. This danger exists especially when train brakes on long slopes and with high gradients. The decisive effect on the frict...

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