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The aim of this study was to achieve realistic levels of two different types of aerosols commonly abundant in indoor environments in an experimental chamber intended for human exposure studies and aerosol characterization. The aerosols chosen were particles from candle lights (in particle number dominated by inorganic water soluble particles) and from ozone-terpene reactions (organic particles). T

In-situ, quasi-continuous measurements of atmospheric hydrogen (H-2) have been performed since October 2007 at the Cabauw tall tower station in the Netherlands. Mole fractions of H-2, CO and several greenhouse gases are determined simultaneously in air sampled successively at four heights, between 20 and 200 m above ground level. Rn-222 measurements are performed in air sampled at 20 and 200 m. Th

Compartmentalized microfluidic platforms are an invaluable tool in neuroscience research. However, harnessing the full potential of this technology remains hindered by the lack of a simple fabrication approach for the creation of intricate device architectures with high-aspect ratio features. Here, a hybrid additive manufacturing approach is presented for the fabrication of open-well compartmental

The aim of this thesis is to design two patch antenna arrays for dual-frequency harmonic radar application, one for the transmitter and the other for the receiver. The arrays are used to track the Bogong moth that migrates from the countryside to the Australian Alps during spring. The tracking is done at the radar by operating the transmitter at one frequency and the receiver at twice the frequenc

This study uses a specifically constructed sub-national dataset on Ebola Virus Disease (EVD) outbreak cases, deaths, and CFR in order to look at the question of how important various socio-economic factors were in determining the intensity and severity of the 2013-2016 EVD outbreak in Guinea, Liberia, and Sierra Leone. The results of the OLS model shows that the socio-economic conditions in differ

H+ projektet i Helsingborg är ett stadsförnyelseprojekt som omfattar den centrala södra delen av staden. Projektet startades år 2002 och merparten förväntas vara bebyggt med bostäder, kontor och offentlig service år 2035. En miljon kvadratmeter mark som tidigare använts som hamn- och industriområde ska utvecklas, förnyas och länkas samman med centrum, söder och omkringliggande områden. Det första

Reflecting on the theoretical as well as the practical learning outcomes of the Masters Program in Entrepreneurship: New Venture Creation, the following paper aims to examine the concepts of liabilities of newness and legitimacy and their bearing on emerging entrepreneurs as well as experienced entrepreneur crossing over to new fields of business. The paper will discuss some of the findings in ent

In this study we analyze the intraday behaviour of stock returns and trading volume using the data on OMXS 30 stocks. We find that returns follow a reverse J-shaped pattern with the peak at the beginning of the trading day, while trading volume attains its maximum towards at the market closure. The highest volatility and kurtosis are observed at 09:30-10:00, and 11:30-12:00, when the macroeconomic

Hair can record chemical information reflecting our living conditions, and, therefore, strands of hair have become a potent analytical target within the biological and forensic sciences. While early efforts focused on analyzing complete hair strands in bulk, high spatial resolution mass spectrometry imaging (MSI) has recently come to the forefront of chemical hair-strand analysis. MSI techniques o

OBJECTIVE: To evaluate the effect of platelet:erythrocyte (P:E) ratios on Plasmodium falciparum erythrocyte invasion.BACKGROUND: Recent reports have shown that platelets are directly involved in the immune response towards P. falciparum during erythrocyte invasion. However, the literature both supports and conflicts with a role for platelets in limiting invasion. Also, the effect of platelet numbe

Landscapes play an important role in many areas of biology, in which biological lives are deeply entangled. Here we discuss a form of landscape in evolutionary biology which takes into account (1) initial growth rates, (2) mutation rates, (3) resource consumption by organisms, and (4) cyclic changes in the resources with time. The long-term equilibrium number of surviving organisms as a function o

After cross-equatorial wintering, migratory birds reliably return to their natal grounds, but a population of cliff swallows recently switched breeding hemisphere. They inverted their annual cycle and migration directions almost instantaneously.