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Energy-efficient selective physisorption driven C2H2 separation from industrial C2-C1 impurities such as C2H4, CO2 and CH4 is of great importance in the purification of downstream commodity chemicals. We address this challenge employing a series of isoreticular cationic metal-organic frameworks, namely iMOF-nC (n=5, 6, 7). All three square lattice topology MOFs registered higher C2H2 uptakes versu
In this paper, we consider precoder design for multiuser multiple-input-multiple-output (MIMO) Gaussian broadcast (BC) channels and propose a generalized zero-forcing (GZF) precoder based on successive dirty-paper coding (DPC), i.e., the GZF-DP precoder. The GZF-DP precoder is an extension of the GZF-DP precoder designed earlier for multi-input-single-output broadcast (MISO-BC) channels, and also
A comprehensive, three-dimensional model of a proton exchange membrane (PEM) fuel cell based on a steady state code has been developed. The model is validated and further be applied to investigate the effects of various porosity of the gas diffusion layer (GDL) below channel land areas, on thermal diffusivity, temperature distribution, oxygen diffusion coefficient, oxygen concentration, activation
In this paper we explore the subsistence economy of the Mesolithic pioneers on the island of Gotland in the Baltic basin, in order to evaluate the importance of freshwater fish to the Early Holocene human population. By analysing faunal remains, the distribution of 14C dates and the location of the settlement sites, we argue that earlier assumptions concerning the importance of marine mammals to t
This article studies the potential combination of direct ground cooling (DGC) with district heating (DH) and ground source heat pumps (GSHP) to compare the required borehole depths and needed drilling areas. It also examines two different borehole sizing approaches to optimize investment costs and drilling areas. The results show that the required borehole depths in most cases are shorter for the
The transformation of the energy systems will call for new turbomachinery designs for harvesting low-grade heat. The word “low-grade” has many definitions and ranges from levels where steam is the preferred selection to very low grades where specially adopted ORC technology is used. In this work, turbomachinery for cascading the steam cycle with a very low-temperature ORC technology is studied. Th
Physical activity is of great benefit to women treated for breast cancer and can even be vital. The aim of this qualitative study was to describe how women treated for breast cancer experience physical activity after surgery. Twelve women, strategically selected according to hospital, age and length of time since surgery, took part in a semi-structured interview. A qualitative method with a phenom
This thesis evaluates twelve Chinese companies participating in a privatization reform initiated by the government. The companies were chosen for the reform during spring/summer of 2005, and the participation in the reform means that the companies start selling off state-owned shares and transform them into publicly traded A-shares. In China, A-shares are shares held by domestic investors and deno
Despite the desire to utilize proactive safety metrics, research results indicate imbalances can arise between economic performance metrics and safety metrics. Imbalances can arise, first, because there are fewer proactive metrics available relative to the data an organization can compile to build reactive metrics. Second, there are a number of factors that lead organizations to discount proactive
Anthropogenic nitrogen (N) deposition and fertilization in boreal forests frequently reduces decomposition and soil respiration and enhances C storage in the topsoil. This enhancement of the C sink can be as strong as the aboveground biomass response to N additions and has implications for the global C cycle, but the mechanisms remain elusive. We hypothesized that this effect would be associated w
The polytetrafluoroethylene (PTFE) is commonly used to improve the hydrophobic of the gas diffusion layer (GDL). In this study, impacts of PTFE content and piecewise/linear gradient distributions on the transport behavior of liquid water were numerically studied by using a multiphase lattice Boltzmann method. A two-dimensional microstructure of the GDL was reconstructed by stochastic algorithm. Th
A conventional claim within tourism research, practice and policy is that tourism is a powerful engine for economic growth across all spatial scales, accounting for slightly more than 10 percent of the global number of jobs and gross domestic product (GDP). What does this tell us? First, that the tourism economy is heavily dependent on mobilising spatial, intangible, material and human resources.
This study aimed to examine how pocket parks should be designed in order to promote visits from the inhabitants in Malmö, as well as which of six design is the best from an ecological perspective. By examining these two aspects the goal was to identify how a pocket park can be designed to work as a multifunctional place in the city. Firstly, a literature study was carried out in order to identify
