Sökresultat

Filtyp

Din sökning på "*" gav 542291 sökträffar

Role of phagotrophy in freshwater phytoplankton

Popular Abstract in Swedish Mixotrofa växtplankton i sjöar Vad är växtplankton? I hav och sjöar finns det mängder av mikroskopiska fritt svävande alger – växtplankton. Liksom gröna växter på land använder växtplankton solljuset för att producera energi och syre genom fotosyntes. För att algerna ska kunna växa behöver de förutom ljus ett flertal näringsämnen varav de viktigaste är kväve (N) och fSome phytoplankton have the ability to combine phototrophy and heterotrophy within the same individual, which is called mixotrophy. In this thesis, I adress mixotrophy and competitive interactions of mixotrophs and obligate auto- or heterotrophs in relation to the availability of nutrients, light and prey. In addition, I examine the biomass of mixotrophic phytoplankton and their grazing impact on

Improvement of separation and dewatering of activated sludge by using enhanced biological removal process over chemical phosphorus precipitation

Samples from several WWTPs in Sweden, operating either with chemical precipitation of phosphorus, biological phosphorus removal or combination of the two, were analysed for separation and dewatering properties. The main parameters of interest were capillary suction time (CST), extracellular polymeric substances (EPS), metal ions concentration, filterability and compressibility of the sludge. Enhan

Words, Deeds and Values : The Intelligentsia in Russia and Poland during the Nineteenth and Twentieth Centuries

Fiona Björling Introduction Andrzej Xalicki Polish conceptions of the intelligentsia and its calling Steven J. Seegel Cartography and the collected nation in Joachim Lelewel’ Lelewel’s geographical imagination: a revised approach to intelligentsia S. I. Michal´cenko xxx V. B. Evarouskij (Evorovskij) xxx Michail Dolbilov Stereotypes of the Pole in Russian public discourse: the case of Russific

Constructing Historical Realism : International Relations as Comparative History

In this study the author seeks to develop Historical Realism as a new approach to International Relations. Drawing on recent theoretical developments in International Relations and Historical Sociology it is argued, first, that a distinction between constitutive and causal theory is necessary and, second, that this distinction makes comparisons at a high level of abstraction across time and space

Round Trips to Heaven : Otherworldly Travelers in Early Judaism and Christianity

Popular Abstract in Swedish Himmelsfärdsskildringar återfinns i en rad religiösa texter från vår tideräknings början. Dessa berättelser har kommit att utgöra ett återkommande tema i religionshistorisk forskning om antikens religioner. Den här boken handlar om några tidiga judiska och kristna himmelfärdstexter. De flesta av dem utgör en del av den apokalyptiska litteraturen. Himmelfärdsmotivet harIn the beginning of the Common Era, a number of religious texts were written recounting heavenly journey adventures. These narratives have come to constitute a recurring theme in research regarding ancient religions. Round Trips to Heaven features several early Jewish and Christian heavenly journey texts. Most of them are included in the apocalyptic literature. During the earlier research, the he

Large deviations and fast simulation in the presence of boundaries

Let c(x) = inf {t > 0: Q(t) greater than or equal to x} be the time of first overflow of a queueing process 1001 over level x (the buffer size) and Z = P(T(X) less than or equal to T). Assuming that {Q(t)) is the reflected version of a Levy process {X(t)} or a Markov additive process, we study a variety of algorithms for estimating z by simulation when the event {tau(X) less than or equal to T} is

Therapy with radiopharmaceuticals

In an investigation by the Swedish Cancer Society, an expert group described the present status, critical issues and future aspects and potentials for each of nine major areas of radiation therapy research. The present report deals with therapy with radiopharmaceuticals.

Psychiatric Symptoms and Their Psychosocial Consequences in Frontotemporal Dementia.

Based on a retrospective study of 19 neuropathologically verified cases with frontotemporal dementia (FTD), neuropsychiatric symptoms related to behavioral disturbances and their psychosocial consequences were studied. The results indicate that frontotemporal dementia is often misdiagnosed early in the clinical course. Behavioural features with impaired social interactions, impaired personal regul

Industrial symbiosis networks and the contribution to environmental innovation - The case of the Landskrona industrial symbiosis programme

This paper considers the potential contribution of Industrial Symbiosis (IS) networks in fostering environmental innovation at the local or regional level. Drawing on literature from innovation studies and innovation in spatial proximity, we outline three factors that are important for the innovation process and identify where the effects from IS networks can be explored. We use observations from

EXAFS structure refinement supplemented by computational chemistry

We present a method that combines structure determination using extended x-ray absorption fine structure (EXAFS) measurements and computational chemistry (CC) calculations, EXAFS/CC. Using such an approach, it is possible to obtain a full structure of model complexes or protein metal active sites, although the EXAFS data primarily give radial distance information about the metal ion's nearest neig

Human liver lipids: representativity of determinations on material obtained by fine-needle aspiration biopsy

Triglycerides and phospholipids in human liver material obtained by fine-needle aspiration biopsy have been determined according to an improved version of a previously developed method. The molar ratios of these lipids have been compared with the same ratios determined on material representing whole liver. The average value of the ratios in the fine-needle specimens was 101% (83-113%) of the corre

Osteoclastogenesis is decreased by cysteine proteinase inhibitors

The effects of cystatin C and other cysteine proteinase inhibitors on osteoclast formation and differentiation have been investigated. Cystatin C decreased osteoclast formation stimulated by parathyroid hormone (PTH), 1,25(OH)(2)-vitamin D3 or interleukin-6 (IL-6) (in the presence of its soluble receptor) as assessed by the number of tartrate-resistant acid phosphatase (TRAP(+)) multinucleated cel

Qusta ibn Luqa On Numbness : A Book on Numbness, Its Kinds, Causes and Treatment According to the Opinion of Galen and Hippocrates. Edition, Translation and Commentary

Qusta ibn Luqa (fl. 860) was a prominent figure in the Graeco-Arabic translation movement that reached its peak in the 9th century. At the request of wealthy and influential commissioners, Qusta translated Greek works on astronomy, mathematics, mechanics and natural science into Arabic. He also produced works of his own: more than sixty treatises are attributed to him. He wrote mainly on medical s

A fast algorithm for approximating the detour of a polygonal chain

Let C be a simple(1) polygonal chain of n edges in the plane, and let p and q be two arbitrary points on C. The detour of C on (p, q) is defined to be the length of the subchain of C that connects p with q, divided by the Euclidean distance between p and q. Given an epsilon >0, we compute in time O((1)/(epsilon) n log n) a pair of points on which the chain makes a detour at least 1/(1 + epsilon) t

Normal cervical changes in parous women during the second half of pregnancy--a prospective, longitudinal ultrasound study.

OBJECTIVE: To determine what constitutes normal cervical changes during the second half of pregnancy in parous women delivering at term. DESIGN: The study comprises 21 healthy, pregnant parous women who all gave birth at term. They were examined with transvaginal ultrasound every two weeks from 24 gestational weeks until delivery. Cervical length and width were measured. The inner cervical os was