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The notion of "global warming" has become a major public-domain concept as an environmental threat to our future on earth. Independently of the accuracy of existing prediction of combustion emissions on the climate on earth, the concept of reducing combustion emissions has been an important political driving force in imposing more and more severe restrictions on harmful emissions from combustion.
Popular Abstract in English Extraction of valuable substances from plants using a solvent has been practised in many fields. One of the examples is making coffee or tea using hot water. In agricultural and food industry, there are tons of wastes containing valuable compounds that can be extracted before they go to incineration. Extractions are usually performed in organic solvents such as methanolPressurised hot water is an environmentally friendly alternative to hazardous organic solvents such as methanol and heptane. One of the many applications of using pressurised hot water extraction (PHWE) is to extract polyphenols from plants. The challenges in PHWE lies with the optimisation of extraction yield. One factor that is often overlooked is the risk of degradation of thermally labile comp
Adaptive antenna systems (AAS’s) are traditionally of interest only in radar and sonar applications. However, since the onset of the explosive growth in demand for wireless communications during the 1990’s, researchers are giving increasing attention to the use of AAS technology to overcome practical challenges in providing the service. The main benefit of the technology lies in its ability to exp
The immunosuppressant drug cyclosporin A (CsA) is considered to be inherently protective in conditions of ischemia, e.g. in hepatic and cardiac tissue. However, investigations of effects of CsA on neuronal tissue have been contradictory, probably because the blood-brain barrier (BBB) is virtually impermeable to CsA. In the present study, we exploited the finding that the insertion of a syringe nee
Serine protease inhibitors (Serpins) are involved in the pathogenesis of neurodegenerative dementia, including the two most common types, Alzheimer’s disease (AD) and dementia with Lewy bodies (DLB). The pathological characteristics of AD include senile plaques, mainly composed of aggregated amyloid-beta peptide (Abeta1-42), but also serpins, and neurofibrillary tangles of hyperphosphorylated tau
Breast cancer is the most common malignancy in women in the Western world with about 10% of women developing breast cancer during their lifetime, of which one third will eventually succumb to the metastatic form of the disease. Breast cancer arises from the epithelial cells of the breast mammary gland, but the mechanisms involved in tumor initiation, progression, and metastasis are still not fully
This work concerned experimental studies of heat transfer in a light-duty diesel engine. Combustion is affected by several parameters, such as pressure, engine speed, mass of injected fuel and in-cylinder gas flow. These parameters are in turn affected by the combustion chamber geometry and fuel spray characteristics. At high load the exhaust heat was increased more than at high engine speed. Swir
BACKGROUND: It is estimated that global dementia rates will more than triple by 2050 and result in a staggering economic burden on families and societies. Dementia carries significant physical, psychological and social challenges for individuals and caregivers. Informal caregiving is common and increasing as more people with dementia are being cared for at home instead of in nursing homes. Caregiv
This thesis addresses micromechanical modeling of materials using computational homogenization. On this topic, theoretical and computational issues are discussed, and numerical investigations of different material systems are performed. The material systems considered are; metal matrix composites, metal sheets with stiff inclusions, metal sheets containing voids, sand with inclusions of gravel and
This paper investigates the greenhouse gas emissions from a Swedish wetland, constructed to decrease nutrient content in sewage treatment water. To evaluate the effect of the construction in terms of greenhouse gas emissions we carried out ecosystem-atmosphere flux measurements of CO2, CH4 and N2O using a closed chamber technique. To evaluate the importance of vascular plant species composition to
Asteroid 4 Vesta is the only currently identified asteroid for which we possess samples in the form of meteorites. These meteorites revealed us that Vesta is a differentiated body and that its differentiation produced a relatively thin basaltic crust that survived intact over its entire collisional history. The survival of the vestan basaltic crust has long been identified as a pivotal constraint
BACKGROUND: Spirometry is used to diagnose chronic obstructive pulmonary disease (COPD). The Impulse oscillometry system (IOS) allows determination of respiratory impedance indices, which might be of potential value in early COPD, although previous experience is limited. We examined pulmonary resistance and reactance measured by IOS in subjects with or without self-reported chronic bronchitis or
Several high resolution electrophysiological techniques such as measurements of cell membrane capacitance and amperometry are used to detect exocytotic events. A novel method was developed in this study based on the expression of P2X2 receptor channel in secreting cells. The presence of ATP sensitive channel on the cell membrane permitted the electrical detection of minute (amoles) quantities of A
Populärvetenskaplig sammanfattning I Arktis finns det enorma lager av kol som ligger i och under permafrosten, vilket är frusen mark som inte har tinat på två år. Mycket tyder på att delar av dessa lager är känsliga för en temperaturökning och idag sker en pågående uppvärmning. Arktis värms snabbare än övriga jorden på grund av att vit reflekterande is och snö smälter, vilket resulterar i att hav The permafrost area in the Arctic region contains vast carbon stocks within and beneath the permafrost, which is frozen ground that has not thawed in two years. These carbon stocks are sensitive to ongoing global warming. When the white and reflective snow and ice melts, the remaining land and sea surfaces absorb more shortwave radiation and get warmer. Heat transport to the Arctic will also incre
Abstract Title: Airline Brands on Twitter: Discovering What Consumers Value to Create a Stronger Social CRM Strategy Date of the Seminar: June 2nd, 2015 Course: BUSN39. Degree project in global marketing Authors: Jane Macfarlane-Grieve Emily Widen Advisors: Christian Koch, PhD Keywords: Social Customer Relationship Management, Communication, Twitter, Airline, Customer Satisfaction Thesis purpose:
Öresund is a very dynamic economic area with numerous projects, there is a great need of a deeper understanding of the wave climate. The wave measurements currently available are scarce and they do not cover the whole area. For this reason, a modeled wave climate would be of interest and the results could be a starting point for different in depth analysis. The objective of this study was to prod
Corporate social responsibility (CSR) is increasingly required of companies. However, CSR at state owned enterprises(SOEs)has not received much attention in the CSR literature. This thesis has the objective to add to knowledge on CSR of Icelandic SOEs. The objective led to three research questions: Q1. How do internal and external factors, affect the implementation and communication of CSR at stat
Objectives The purpose of the thesis is to investigate how a new logistic set-up can lower the transportation cost of OEM articles. Four objectives are identified to that end: identify the OEM articles, map their flow, create simulation tool and examine what logistics set-up is suitable. Background The increasing rate of globalization has put immense pressure on the world’s infrastructure. As a re
Problem Discussion: Nissan Diesel became a part of the Volvo Group in the end of March, 2007. A year has passed and the integration process is making progress but it is perceived to lack some momentum. Our sponsor would like to understand if there are any potential barriers to the integration process. (Haspeslagh, et al., 1991) and (Pablo, 1994) presents two different sets of determinants that can
