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Gas-liquid mass transfer in bubbly flow: Estimation of mass transfer, bubble size and reactor performance in various applications
Acta Universitatis LappeenrantaensisURN:ISSN:1456-4491 (05.12.2005)Gas-liquid mass transfer is an important issue in the design and operation of many chemical unit operations. Despite its importance, the evaluation of gas-liquid mass transfer is not straightforward due to the complex ... -
Gas-phase photocatalytic oxidation of volatile organic compounds
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 28.03.2008)Substances emitted into the atmosphere by human activities in urban and industrial areas cause environmental problems such as air quality degradation, respiratory diseases, climate change, global warming, and stratospheric ... -
Generalized Differential Evolution for Global Multi-Objective Optimization with Constraints
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 19.05.2012)The objective of this thesis work is to develop and study the Differential Evolution Algorithm for multi-objective optimization with constraints. Differential Evolution is an evolutionary algorithm that has gained in ... -
Generative Part-Based Gabor Object Detector
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 25.09.2015)Object detection is a fundamental task of computer vision that is utilized as a core part in a number of industrial and scientific applications, for example, in robotics, where objects need to be correctly detected and ... -
Geochemistry and water quality of Lake Qarun, Egypt
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 10.06.2015)Water geochemistry is a very important tool for studying the water quality in a given area. Geology and climate are the major natural factors controlling the chemistry of most natural waters. Anthropogenic impacts are ... -
Global climate as a commons — from decision making to climate actions in least developed countries
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 09.12.2022)The international battle against climate change requires action from all parties of the United Nations Framework Convention on Climate Change including the rapidly developing low-income countries. Most of the least developed ... -
Global techno-economic potential of Power-to-X technologies for sustainable fuels, chemicals, and food supply
Acta Universitatis Lappeenrantaensis : 1192 (Lappeenranta-Lahti University of Technology LUT, 06.03.2025)Global warming must be limited to 1.5°C above pre-industrial levels to reduce the risks and impacts of climate change. Achieving this goal requires net-zero anthropogenic CO2 emissions and a decline in other greenhouse ... -
Going further, looking ahead, and with others : how context shapes sustainability-oriented outcomes in start-ups and SMEs
Acta Universitatis Lappeenrantaensis : 1221 (Lappeenranta-Lahti University of Technology LUT, 03.10.2025)Sustainable entrepreneurship has emerged in response to the intersecting crises of environmental degradation, social inequality, and economic instability. Nevertheless, entrepreneurs working to create more sustainable ... -
Good for wealth or bad for health? Socioemotional wealth in the internationalisation process of family SMEs from a network perspective
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 04.12.2020)This dissertation investigates how family SMEs (small- and medium-sized enterprises) internationalise from a network perspective, to reach both noneconomic socioemotional wealth (SEW) and economic goals. SEW encompasses ... -
Greenhouse gas emissions from peat and biomass-derived fuels, electricity and heat — Estimation of various production chains by using LCA methodology
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 07.02.2014)More discussion is required on how and which types of biomass should be used to achieve a significant reduction in the carbon load released into the atmosphere in the short term. The energy sector is one of the largest ... -
Grid Support by Battery Energy Storage System Secondary Applications
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 13.12.2019)Global developments in renewable energy and energy efficiency of the power consumption present challenges to maintain the frequency stability of the electricity grids. The objective of the research is to investigate how ... -
Growth for the Common Good? Social enterprises’ growth process
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 09.12.2019)Social enterprises are expected to contribute to solving some of the most vicious problems of our time, including poverty, inequality and environmental threats. Thus, social enterprises need to tailor scalable operational ... -
Growth, magnetic and transport properties of InSb and II-IV-As2 semiconductors doped with manganese
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 19.12.2011)This thesis is devoted to growth and investigations of Mn-doped InSb and II-IV-As2 semiconductors, including Cd1-xZnxGeAs2:Mn, ZnSiAs2:Mn bulk crystals, ZnSiAs2:Mn/Si heterostructures. Bulk crystals were grown by direct ... -
Haja-asutusalueiden sähkönjakelujärjestelmien kehittäminen – erityisesti 1000 V jakelujännitteen käyttömahdollisuudet
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 18.03.2005)Yhteiskunnan riippuvuus sähköstä on lisääntynyt voimakkaasti viime vuosikymmenien aikana. Sähkönjakelussa esiintyneet lyhyet ja pitkät keskeytykset ovat osoittaneet yhteiskunnan haavoittuvuuden ja yhteiskunta kestää entistä ... -
Heat sealing and convertibility of coated paper materials in vertical form fill and seal machine
Lappeenranta-Lahti University of Technology LUT : 1187 (Lappeenranta-Lahti University of Technology LUT, 03.02.2025)Challenges regarding the heat sealing and convertibility of coated papers in vertical form, fill, and seal (VFFS) machines were investigated. This research focused on enhancing the use of coated papers in VFFS packaging ... -
Heterarkkisen verkostoyhteistyön johtamistarpeet verkoston muotoutumisvaiheessa
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 04.11.2016)Verkostojohtamisesta on tullut ajankohtainen tutkimusaihe viimeisen 15 vuoden aikana. Verkostojen johtaminen on osoittautunut monimutkaiseksi ilmiöksi, johon organisaatioiden johtamisopit eivät yksin riitä. Tämä tutkimus ... -
Heterogeneous mass transfer in fluidized beds by computational fluid dynamics
Acta Universitatis Lappeenrantaensis (Lappeenranta University of Technology, 02.12.2014)The main objective of this research is to estimate and characterize heterogeneous mass transfer coefficients in bench- and pilot-scale fluidized bed processes by the means of computational fluid dynamics (CFD). A further ... -
Heuristic similarity- and distance-based supervised feature selection methods
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 16.12.2019)In the field of machine learning, the available data often contain many features to describe phenomena. This can pose a problem since only those features that are relevant to characterize the target concept are needed, ... -
Heuristic-Based Packetized Energy Management for Residential Electricity Demand
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 07.06.2023)The unprecedented growth of distributed energy resources (DERs) has brought limitless opportunities to reshape the energy infrastructure and instigate urgent reforms for technoeconomic advancements, business models, ... -
High Power Fiber Laser Welding of Thick Section Materials – Process Performance and Weld Properties
Acta Universitatis Lappeenrantaensis (Lappeenranta-Lahti University of Technology LUT, 27.11.2019)High power fiber laser systems have reached output powers far beyond 30 kW and a fiber laser source of 100 kW output power has recently become available for fundamental research. With the high laser power that is now ...
