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The addition of a carbon nutrient feed to a fed-batch cultivation is often not enough to obtain satisfactory growth and/or production. In some cases, an additional feed with for example supplementary amino acids or complex media is required. This work presents the development of feeding strategies where more than one feed is required and the knowledge of the growth requirements is low. Simulations
Artikeln beskriver olika stadier i Theissens uppmärksammade forskning om evangeliernas tillkomstprocess och den historiske Jesus, med särskild uppmärksamhet på hans sena huvudarbeten. Theissen är numera kritisk mot den formhistoriska skepsis som läser evangelierna som en spegel av den tidiga kyrkan i stället för av Jesus. Idag hävdar han plausibilitetskriteriet som det avgörande. Just det att Jesu
This paper reports the implementation of the SIMIND Monte Carlo code on an IBM SP2 distributed memory parallel computer. Basic aspects of running Monte Carlo particle transport calculations on parallel architectures are described. Our parallelization is based on equally partitioning photons among the processors and uses the Message Passing Interface (MPI) library for interprocessor communication a
One of the most fundamental components of predator-prey models is encounter rate, modelled as the product of prey density and search efficiency. Encounter rates have, however, rarely been measured in empirical studies. In this study, we used a video system approach to estimate how encounter rates between piscivorous fish that use a sit-and-wait foraging strategy and their prey depend on prey densi
Cryptobiosis is an ametabolic state of life entered by some lower organisms (among metazoans mainly rotifers, tardigrades and nematodes) in response to adverse environmental conditions. Despite a long recognition of cryptobiotic organisms, the evolutionary origin and life history consequences of this biological phenomenon have remained unexplored. We present one of the first theoretical models on
This PhD thesis is made up of five independent studies and a comprehensive synthesis. The first three studies are published 2001 in the book Vem behöver en by? Kyrkheddinge, struktur och strategi under tusen år (pp. 1-95) (Who needs a village? Kyrkheddinge, Structure and Strategy During a Thousand Years). The remaining two parts and the synthesis are published in the volume Den medeltida byns soci
Popular Abstract in Swedish Överdosens antropologi behandlar narkotikaöverdosens sociala konsekvenser. Eva-Malin Antoniusson har studerat hur olika aktörer i vård- och institutionsmiljöer förhåller sig till överdoser. Forskningen bygger på fältundersökningar i Sverige, USA och Nederländerna. I avhandlingen återges intervjuer med narkomaner som överlevt överdoser eller varit med när andra överdoserThe central theme of this thesis is the nature of heavy drug overdose and its social consequences. The aim of the study is to provide a nuanced ethnographic interpretation on the phenomenon concerning drug overdose, especially among drug users using injections as the principle means of administering the drugs. The field study was localized to institutional milieus, primarily drug addiction treatme
During the last decade several long term studies of interventions in patients with COPD have been published. This review analyses the potential of these interventions to alter the progression of the condition. The only treatment that has unequivocally been shown to reduce the rate of decline in FEV(1) is smoking cessation. Active psychological intervention in combination with pharmacotherapy is re
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Eight secondary metabolites were isolated from submerged cultures of the ascomycete A111-95 during a search for new nematicidal metabolites. (-)-Galiellalactone (7) and compound 2 are metabolites previously obtained from cultures of Galiella rufa while the compounds 1, 3, 4, 5, 6 and 8 (3 and 4 were obtained as an unseparable mixture), were isolated as natural products for the first time. Compound
PURPOSE: The aim of this study was to evaluate any possible effects of brain motion, CSF pulsations and other possible sources of physiological motion in electrocardiographic (ECG) triggered and non-triggered single-shot echo-planar imaging (EPI) measurements of diffusion. MATERIAL AND METHODS: Three different triggering protocols were evaluated in 6 healthy volunteers: 1) ECG triggering with time
On the basis of cross-sectional studies in elite athletes and longitudinal studies, physical activity in growing children has been suggested to enhance bone mineral acquisition and prevent osteoporosis later in life. The level of exercise in most of these studies is not applicable in a population on a day-to-day basis. The aim of this study was to determine whether moderate increased exercise with
Twenty-six patients were operated because of osteo-arthritis of the trapeziometacarpal joint. After excision of the trapezium, they were randomized to receive either a Swanson silicone trapezium implant or a tendon interposition arthroplasty using a strip of the abductor pollicis longus tendon (APL). No infection or clinical silicone synovitis occurred and no major radiographic cyst formation was
HYPOTHESIS: A decrease in the intraoperative parathyroid hormone (PTH) level predicts long-term operative success. DESIGN: A case series of consecutive patients undergoing parathyroidectomy with intraoperative PTH measurement. SETTING: A university hospital. PATIENTS AND INTERVENTION: One hundred two patients with sporadic primary hyperparathyroidism underwent parathyroidectomy according to the pr
The planar Hall effect was used for investigation of magnetic anisotropy in short period (Ca,Mn)As/CaAs superlattices epitaxially grown on (001) oriented GaAs substrate. The results confirmed the existence of low-temperature magneto crystalline anisotropy in the superlattices with the easy magnetic axes directed along the two in-plane (100) directions. Attention is paid to the two-state behaviour
We have investigated the poorly-understood origin of nitrogen in the early Galaxy by determining N abundances from the NH band at 336 nm in 35 extremely metal-poor halo giants, with carbon and oxygen abundances from Cayrel et al. (2004, A&A, 416, 1117), using high-quality ESO VLT/UVES spectra (30 of our 35 stars are in the range -4.1 <[Fe/H] < -2.7 and 22 stars have [Fe/H] < -3.0). N abundance
