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In this brief article we present initial results of chemical analyses of flint samples from six Polish sites and one Ukrainian site near the Polish border. The purpose is to examine the extent to which Polish flint resembles or differs chemically from Scandinavian flint. Flint from five of the seven analysed localities proved distinguishable from Scandinavian flint on the basis of chemical analysi

The production of deuterons and anti-deuterons in the transverse momentum range 1.1

Studies have suggested poorer health in the homosexual and bisexual groups compared to heterosexuals. Tobacco smoking, which is a health-related behavior associated with psychosocial stress, may be one explanation behind such health differences. Social capital, i.e. the generalized trust in other people and social participation/social networks which decreases the costs of social interaction, has b

One of the major symptoms of the neurodegenerative condition Parkinson's disease (PD) is a slowness or loss of voluntary movement, yet frustratingly therapeutic strategies designed to restore movement can result in the development of excessive abnormal movements known as dyskinesia. These dyskinesias commonly develop as a result of pharmacotherapy in the form of L-DOPA administration, but have als

Popular Abstract in English Research has shown the Ugandan construction industry to be, primarily, an informal sector dominated by unskilled labour contracted mainly on minor building works such as alterations and renovations. Within such a context, the industry has also received negative publicity due to increasing quality failures on sites – commonly referred to as shoddy work. Some reasons citeResearch has shown the Ugandan construction industry to be, primarily, an informal sector dominated by unskilled labour contracted mainly on minor building works such as alterations and renovations. Within such a context, the industry has also received negative publicity due to increasing quality failures on sites – commonly referred to as shoddy work. Some reasons cited for these failures include

BACKGROUND: It is not known whether snuff (moist smokeless tobacco) affects disease activity in rheumatoid arthritis (RA). OBJECTIVE: This study aims to study the effect of snuff on disease activity and function in Swedish patients with early RA. METHODS: Between 1992 and 2005, 2800 adult patients were included in the Better Anti-Rheumatic FarmacOTherapy (BARFOT) early RA study in Sweden. Disease

Biological invasions often cause major perturbations in the environment and are well studied among macroorganisms. Less is known about invasion by free-living microbes. Gonyostomum semen (Raphidophyceae) is a freshwater phytoplankton species that has increased in abundance in Northern Europe since the 1980's and has expanded its habitat range. In this study, we aimed to determine the genetic popul

We have analyzed the influence of a Ga vacancy on electronic properties of GaAs(110) by scanning tunneling microscopy (STM), ab initio electronic structure simulations based on density functional theory with Perdew-Becke-Ernzerhof and Heyd-Scuseria-Ernzerhof functionals and STM simulations. We find that the HSE03 functional improves the description of the band gap of the semiconductor surface in l

The purpose of this thesis is to examine how increased mobility of indigenous student migrants in Dhaka from the Chittagong Hill Tracts in Bangladesh affects notions of belonging and indigeneity. By applying a theoretical framework of mobility, global interconnectedness and lifestyle, the study challenges representations by indigenous rights advocates of indigenous people as inherently immobile an

Let X be a Levy process and V the reflection at boundaries 0 and b > 0. A number of properties of V are studied, with particular emphasis on the behaviour at the upper boundary b. The process V can be represented as solution of a Skorokhod problem V(t) = V(0)+X(t)+L(t)-U(t) where L, U are the local times (regulators) at the lower and upper barrier. Explicit forms of V in terms of X are surveyed as

We report on highly Mn-doped GaAs nanowires (NWs) of high crystalline quality fabricated by ion beam implantation, a technique that allows doping concentrations beyond the equilibrium solubility limit. We studied two approaches for the preparation of Mn-doped GaAs NWs: First, ion implantation at room temperature with subsequent annealing resulted in polycrystalline NWs and phase segregation of MnA

We study the asymptotic performance of approximate maximum likelihood estimators for state space models obtained via sequential Monte Carlo methods. The state space of the latent Markov chain and the parameter space are assumed to be compact. The approximate estimates are computed by, firstly, running possibly dependent particle filters on a fixed grid in the parameter space, yielding a pointwise

The relation between the self-diffusion coefficient, D-self, of water and the free volume hole size, V-h, has been investigated in a hydroxypropyl methylcellulose (HPMC)-water system in the water content range 0.08-0.36 w/w, at room temperature. Furthermore, the thermal properties of the water in the HPMC-water system, as measured with differential scanning calorimetry (DSC) and the tensile storag

Achieving phase purity and control in III-V nanowires is a necessity for future nanowire-based device applications. Many works have focused on cleaning specific crystal phases of defects such as twin planes and stacking faults, using parameters such as diameter, temperature, and impurity incorporation. Here we demonstrate an improved method for crystal phase control, where crystal structure variat

TRPA1 is a unique sensor of noxious stimuli and, hence, a potential drug target for analgesics. Here we show that the antinociceptive effects of spinal and systemic administration of acetaminophen (paracetamol) are lost in Trpa1(-/-) mice. The electrophilic metabolites N-acetyl-p-benzoquinoneimine and p-benzoquinone, but not acetaminophen itself, activate mouse and human TRPA1. These metabolites a

Treatment of sludge with enzymes has previously been shown to efficiently release organic matter. However, the added enzymes were partially adsorbed to, entrapped by or bound to the sludge structure. Simultaneous decrease of enzymes activities was observed. Reduced adsorption and more effective, lower, enzyme dose was achieved in sludge pre-treated with three cation-binding agents. The enzymatic s

A key assumption in the person-oriented approach is that a person must be understood as a complex, integrated system, represented by patterns of within-person variation rather than scores on separate variables. The term ‘system’ does, however, have multiple meanings, which are not clearly distinguished in the person-oriented literature. I try to disentangle causal interactionism, which describes t

Combining photoelectron spectroscopy and density-functional theory calculations, we have studied the atomic geometry of Yb/Si(100)(2 X 6) reconstruction and the mechanisms responsible for its stabilization as well as the influence of this reconstruction on Si 2p core-level photoemission. The analysis of measured and calculated surface core-level shifts supports the recently proposed model of the Y