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Mapping insect defoliation in Scots pine with MODIS time-series data

Insect damage is a general problem that disturbs the growth of forests, causing economic losses and affecting carbon sequestration. Coarse-resolution data from satellites are potentially useful for national and regional mapping of forest damage, but the accuracy of these methods has not been fully examined. In this study, a method was tested for the mapping of defoliation in Scots pine [Pinus silv

Growth of ultrathin ZrO2 films on Si(100): Film-thickness-dependent band alignment

The band alignment of ultrathin ZrO2 films of different thickness formed on Si(100) have been monitored with synchrotron radiation photoelectron spectroscopy and x-ray absorption spectroscopy. The films were deposited sequentially by way of metal-organic chemical-vapor deposition in ultrahigh vacuum. A significant decrease in the conduction band offset is found for increasing film thickness. It is

Effects of the transition to a client-centred team organization in administrative surveying work

A new work organization was introduced in administrative surveying work in Sweden during 1998. The new work organization implied a transition to a client-centred team-based organization and required a change in competence from specialist to generalist knowledge as well as a transition to a new information technology, implying a greater integration within the company. The aim of this study was to f

Heritability of model-derived parameters of beta cell secretion during intravenous and oral glucose tolerance tests: a study of twins

Aims/hypothesis: The genetic architecture of model- derived parameters of beta cell function has never been assessed. Therefore, we estimated heritability (h(2)) for model- derived phenotypes of insulin secretion in twins. Methods: Thirty-three monozygotic (MZ) and 23 dizygotic (DZ) twin pairs from the Finnish Twin Cohort Study underwent OGTT (plasma glucose/C-peptide at 0, 30, 60, 90 and 120 min)

Maxima for Gaussian seas

The probability distribution of the height of global maximum for a Gaussian random field evolving in time is studied. In particular, the effect of spreading is studied and the role of the wave kinematics is discussed. It is observed that taking into account time dynamics of spatial characteristics results in distributions different from those obtained for the static case. The results are illustrat

The Role of Nitric Oxide Synthase in Post-Operative Hyperglycaemia

Post-operative hyperglycaemia is important with regard to outcomes of surgical operations. It affects postoperative morbidity, length of hospital stay, and mortality. Poor peri-operative blood glucose control leads to a higher risk of post-operative complication. Insulin resistance as a cause of post-operative hyperglycaemia has been blamed for some time. Nitric Oxide (NO) is produced by nitric ox

Multifocal visual evoked potentials-a method study of responses from small sectors of the visual field.

Objective: A method study of the mfVEP technique to establish a standardised way to identify stable response components from small areas in all parts of the visual field and a test-retest reliability study. Methods: MfVEP was recorded from 26 healthy volunteers. Results: Two response components could be clearly identified. The latencies corresponded to those of the traditional VEP response (N75 an

Effect of humidity on constant output and breath enhanced nebulizer designs when tested in the EN 13544-1 EC standard

Aqueous aerosols produced by nebulizers used in clinical situations can rapidly change size as the patient inhales. This is caused by air with a relative humidity (RH) lower than inside the nebulizer being entrained and mixed with nebulized aerosol during the inhalation maneuver. A way to assess the change in size is to measure the aerosol in a test method that reflects the clinical situation. The

Self-reported skin morbidity and mental health. A population survey among adults in a Norwegian city.

Background Several studies among dermatological patients have shown a link between various chronic dermatological diseases and mental morbidity. Objectives To explore the association between self-reported skin morbidity and psychosocial factors in the general population. Methods This population-based cross-sectional study is part of the Oslo Health Study conducted during 2000–2001. All individua

Soil and plants in the sand steppe

Sand steppe is a rare vegetation type on sandy soils in southeastern Sweden with Koeleria glauca and Dianthus arenarius as the most characteristic plant species. The sand steppe areas ill eastern Skane were surveyed during 2004 and 2005. The vegetation composition was monitored and related to die pH and lime content Many sand steppes are close to acidification as indicated by low lime content ill

In vitro screening for antitumour activity of Clinopodium vulgare L. (Lamiaceae) extracts.

Aqueous extract of Clinopodium vulgare L. showed strong antitumour activity when tested in vitro on A2058 (human metastatic melanoma), HEp-2 (epidermoid carcinoma, larynx, human) and L5178Y (mouse lymphoma) cell lines-6 h after treatment disintegration of the nuclei and cell lysis started. Applied at a concentration of 80 microg/ml it reduced the cell survival to 1.0, 5.6 and 6.6%, respectively. T

Microwave-assisted extraction of zearalenone from wheat and corn

A microwave-assisted extraction (MAE) method has been developed for determination of zearalenone in wheat and corn by LC-MS with an atmospheric pressure chemical ionization interface (APCI). Matrix effects were minimized by use of matrix-matched standard curves for quantification of the analyte. The limit of quantification (LOQ) of the method was 30 ng g(-1) in wheat and 20 ng g(-1) in corn. The r

Effect of processing of sword beans (Canavalia gladiata) on physicochemical properties of starch

The effect of various processing methods on physico-chemical properties of sword bean starch was studied. Seed grits and flour were cooked with and without soaking, wet-autoclaved, and roasted. The changes in starch associated with these processing methods were studied by observing changes in granular structure, water solubility index, water absorption index, molecular size distribution and the de

Generalization of rapidly recurring seizures is suppressed in mice lacking glial cell line-derived neurotrophic factor family receptor alpha2.

Recent experimental evidence indicates that neurotrophic factors play a role in the pathophysiology of epilepsy. The objective of this study was to explore whether signaling through one of the glial cell line-derived neurotrophic factor family receptors, GFRα2, influences the severity of kindling-evoked, rapidly recurring seizures and the subsequent development of permanent hyperexcitability. We a

An experimental evaluation of the arctic fox (Alopex lagopus) as a seed disperser

Arctic foxes are evaluated as seed dispersal vectors for Greenlandic plant species through a feeding experiment with subsequent scat analysis and germination test. Seeds of 22 common species with different morphology were tested. Passage time ranged between 4 and 48 hours. No significant differences was detected in passage time for seeds with different morphology. Cerastium alpinum and Stellaria l

Methotrexate concentrations in cerebrospinal fluid and serum, and the risk of central nervous system relapse in children with acute lymphoblastic leukaemia

The aim of the study was to characterize the relationship between the pharmacolkinetics of methotrexate in serum and concentrations in the cerebrospinal fluid, and to analyse the association to risk of a central nervous system relapse in children with acute lymphoblastic leukaemia. In this retrospective study, 353 children with acute lymphoblastic leukaemia treated with high-dose methotrexate acco