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Semester och masonit
The effect of different cements and pozzolans on chloride ingress into concrete
Chloride profiles were measured on ten different concrete qualities. The effect of two different cements, an ordinary Portland cement, OPC, and a sulfate-resistent Portland cement, SRPC, with and without inclusion of silica fume and fly ash was investigated. The samples were exposed to a 3 wt% sodium chloride solution for 119 days. Two different preparations before exposure were studied. Both type
Derivation, characterization, and differentiation of human embryonic stem cells
The derivation of human embryonic stem (hES) cells establishes a new avenue to approach many issues in human biology and medicine for the first time. To meet the increased demand for characterized hES cell lines, we present the derivation and characterization of six hES cell lines. In addition to the previously described immunosurgery procedure, we were able to propagate the inner cell mass and es
Multidisciplinär kurs i akutmedicin ger ST-läkare större säkerhet
Lack of courses in emergency medicine for doctors under training is currently a problem in Sweden. Only 10 percent will have these courses early under their internship. The University hospital in Malmoe has therefore decided to create a course for doctors under training and to offer it early in their education. The curriculum is based on a problem-based learning concept using a modified case metho
Echolucency of carotid plaques correlates with plaque cellularity.
Exact buffer overflow calculations for queues via martingales
Let tau(n) be the first time a queueing process like the queue length or workload exceeds a level n. For the M/M/1 queue length process, the mean Etaun and the Laplace transform Ee(-staun) is derived in closed form using a martingale introduced in Kella and Whitt (1992). For workload processes and more general systems like MAP/PH/1, we use a Markov additive extension given in Asmussen and Kella (2
Reproducibility in DNA flow cytometric analysis of breast cancer: comparison of 12 laboratories' results for 67 sample homogenates
Flow cytometric (FCM) DNA analysis yields information on ploidy status and the S-phase fraction (SPF), variables of prognostic importance in breast cancer. The clinical value of the SPF is currently being evaluated in prospective randomized trials. The widespread use of FCM DNA analysis emphasizes the importance of reproducibility (both intra- and interlaboratory). In this study, 67 nuclear suspen
Flow and heat transfer from multiple slot air jets impinging on circular cylinders
This study presents flow and heat transfer predictions of multiple slot air jets impinging on circular cylinders using CFD (computational fluid dynamics). The distribution of Nusselt numbers around the cylinders for different Reynolds numbers (23,000-100,000), distances between the jets, and openings between them was determined for two and three jets and compared to simulations of a single jet. Th
Serum electrolytes and parathyroid hormone in patients in a coronary care unit
A prospective study was carried out in 499 patients admitted to a coronary care unit (CCU) in order to evaluate the incidence of clinically significant electrolyte disturbances. Low serum potassium values (less than 3.6 mmol l) occurred in 7% of the CCU patients and low serum magnesium values (less than 0.70 mmol l-1) in 6%. Few patients had low values of both these ions (1.9%). In 49 patients the
Personal names and identity
In all societies, personal names are important as a means for recognizing and distinguishing people. The paper, following Claude Lévi-Strauss’ theories on how people systematize the surrounding world through named categories, focuses on how we use names to gain knowledge about who a person “is”. We base our conclusions on culturally shared knowledge about how specific names are related to gender,
System för automatisk landning av flygplan : Projektarbete i systemteknik våren 1974
Throughput of strongly interfering slow frequency-hopping networks
With the increasing, use of short-range wireless devices for high-data-rate communication in the shared frequency bands, the level of interference can be expected to increase. The ability to,estimate, the performance degradation of these devices due to increasing interference is, therefore, important. In this paper, the throughput of devices that perform frequency hops after each transmitted packe
Negotiating with the LDCs: Situation and Context
Bilateral foreign aid negotiations between industrialized and less developed countries; based on conference paper. Characteristic features of foreign aid negotiations, as compared to other types of negotiations between states; influence of factors which are external in relation to the negotiations themselves.
Quantitative study of 10 Hz operation of a soft x-ray laser-energy stability and target considerations
A soft x- ray laser from Ni- like Mo, pumped in grazing incidence ( GRIP), is analyzed with regard to high repetition rate operation. Reliable lasing is obtained, but with significant energy fluctuations attributed mainly to beam pointing jitter from the pump laser. Two modes of operation are compared: continuously moving target and stationary target. With a moving target the soft X- ray output is
Fate of Chlorinated Fatty Acids in Migrating Sockeye Salmon and Their Transfer to Arctic Grayling
To investigate whether biotransport constitutes an entry route into pristine ecosystems for nonpersistent, nonvolatile xenobiotic compounds, extractable organically bound halogen in sockeye salmon (Oncorhynchus nerka) from Alaska was determined before and after spawning migration. The major organohalogen compounds in the salmon were halogenated fatty acids, predominantly chlorinated species that a
Partial cation and anion-yield experiments in ammonia around the N 1s ionization threshold
We report partial cation and anion-yield measurements around the N K edge in isolated ammonia molecules. Due to the dominance of spectator electronic decay following Rydberg excitations, fragmentation was found to be more extensive following excitation to intermediate states of Rydberg character compared to excitation of states with molecular-orbital character. Unusual stability of the NH32+ fragm
The metabolic syndrome and incidence of cardiovascular disease in non-diabetic subjects-a population-based study comparing three different definitions.
Aims Between 1998 and 2005, a number of definitions of the metabolic syndrome (MetS) have been proposed. The aim of this population-based cohort study was to compare prevalence rates and the prediction of cardiovascular disease (CVD) using different definitions of MetS. Methods A total of 5047 non-diabetic subjects (66% women), from the city of Malmo, Sweden, were followed. The incidence of fatal
Redistribution of emitting state population in conjugated polymers probed by single-molecule fluorescence polarization spectroscopy
Fluctuations in the fluorescence polarization degree and direction are reported for the first time for single conjugated polymer molecules embedded in a polystyrene matrix at room temperature. The polymer molecule, a polythiophene derivative, clearly emits as a multi-chromophore ensemble showing that the energy does not funnel to any specific low-energy trap. The fluorescence instead originates fr
Simplistic approaches to complex psychic phenomena
Psychology's subject-matter is, admittedly, complicated and difficult to handle. Over the years psychologists have tried various approaches to make their endeavours more plain and manageable. One attempt at simplification is to deny the subjective side of psychic reality and exclusively focus behavioral facts. Another way is reduction of psychic events to somatic counterparts. And a third alternat