Sökresultat

Filtyp

Din sökning på "*" gav 534677 sökträffar

Breeding biology of fluttering shearwaters (Puffinus gavia) on burgess Island in northern New Zealand

The Fluttering Shearwater (Puffinus gavia) is an abundant seabird endemic to breeding colonies in northern and central New Zealand. The species remains poorly studied, and here we present the first study to examine its breeding biology in detail. Fluttering Shearwater nests were monitored from laying in September to fledging in January 2016 on Burgess Island in the outer Hauraki Gulf, northern New

Perturbations of time shifts in signal apparition

In the field of exploration geophysics, the method known as "signal apparition" offers a different perspective on how to separate signals acquired from simultaneously fired seismic sources. The method uses a periodic sequence of small time shift variations to encode the different sources, and this choice leads to exact separation of signals in diamond-shaped regions of the frequencywavenumber doma

Tooth loss is a complex measure of oral disease : Determinants and methodological considerations

Objectives: Counts of missing teeth or measures of incident tooth loss are gaining attention as a simple way to measure dental status in large population studies. We explore the meaning of these metrics and how missing teeth might influence other measures of dental status. Methods: An observational study was performed in 2 contrasting adult populations. In total, 62 522 adult participants were ava

Abdominell rektusdiastas kan ge funktionella besvär - Indikation för behandling måste förtydligas

En kvarstående abdominell rektusmuskeldiastas hos kvinnor efter förlossning är vanlig och kan medföra försämrad bålmuskelfunktion och hos en del patienter avsevärt nedsatt livskvalitet.Den vetenskapliga evidensen för val av behandling av abdominell rektusmuskeldiastas är svag. Fysioterapi med bålstabiliserande träning bör vara förstahandsval.Hos en liten grupp med mer uttalade besvär där fysiotera

Sensitivity analysis on the microscale combustion calorimeter for polyurethane foam using a full factorial design methodology

A sensitivity analysis on test outcomes from the microscale combustion calorimeter was performed using flexible polyurethane foam as the sample material. Three input factors were investigated: sample preparation, heating rate and pyrolysis chamber atmosphere. The experiments were setup according to the principles of design of experiments and a full factorial design was implemented. In total, 39 ex

Sequential School Choice with Public and Private Schools

Motivated by school admission systems used in, e.g., Turkey and Sweden, this paper investigates a sequential two-stage admission system with public and private schools. To perform the analysis, relevant axioms and equilibrium notions need to be tailored for the considered dynamic setting. In particular, a notion of truthfulness, referred to as straightforwardness, is introduced. In sharp contrast

At the nexus of problem-solving and critical research

The analytical distinction between critical and problem-solving research is useful. At the onset of research, the latter takes the world as it is while the former questions it. Yet, in striving to integrate social and natural dimensions of sustainability such a distinction may surface as a methodological obstacle. We illustrate how combining critical with problem-solving approaches can help us ima

Synesthetic Associations Between Voice and Gestures in Preverbal Infants : Weak Effects and Methodological Concerns

Adult humans spontaneously associate visual features, such as size and direction of movement, with phonetic properties like vowel quality and auditory pitch. A number of recent studies have claimed that looking time in preverbal infants reveals the same associations, which would indicate that some cross-modal correspondences are the result of perceptual biases. Here we tested 30 infants of age 7-1

Supradiaphragmatic Presentation of Non‐Hodgkin's Lymphoma in Men Occupationally Exposed to Organic Solvents

ABSTRACT. Using a standardized interview schedule, occupational exposure to organic solvents was investigated in 61 consecutive male patients with the diagnosis of non‐Hodgkin's lymphoma. When exposure was defined as handling of organic solvents every working day for at least one year, 23 patients were exposed and 38 non‐exposed. Of 15 patients with clinical stage I‐II above the diaphragm, 12 (80%

Uptake of thymidine in lymphoma cells obtained through fine-needle aspiration biopsy. Relation to prognosis in non-hodgkin's lymphomas

In vitro uptake of tritiated thymidine was studied in autoradiographic preparations of lymphoma cell suspensions obtained through fine-needle aspiration biopsy from 28 patients with non-Hodgkin's lymphoma. The labelling indices (LI ) were highest in patients with histiocytic or poorly differentiated lymphocytic lymphoma. During a two-year period there was a significant correlation between LI and s

Fine needle aspiration biopsy: A useful tool in tumor cytogenetics with special reference to malignant lymphomas

A method for chromosome analysis of malignant cells by means of fine needle aspiration biopsy has been developed. The method has some obvious advantages compared to conventional surgical biopsy. During a 1-year period 25 consecutive non-Hodgkin, non-Burkitt lymphoma biopsies from 19 patients have been studied. In 14 out of 21 lymph node biopsies chromosome analysis was successful; whereas, four bi

Human malignant melanoma heterotransplanted to nude mice

Five different human malignant melanoma were heterotransplanted subcutaneously to nude mice. When small tissue pieces were used 3 out of 5 tumors grew. Subcutaneous injections of suspended tumor cells were also made, but all failed to take. Metastatic or infiltrative growth was never seen in the mice observed for up to 2.5 months. The successful grafts largely retained the original morphological f

Sex Ratio in Offspring of Patients with Non-Hodgkin Lymphoma

To the Editor: In a letter in the November 5 issue, Alperovitch and Feingold reported an increased sex ratio (male:female) among children of women with multiple sclerosis.1 We have observed a remarkably decreased sex ratio in the offspring of young adults with non-Hodgkin lymphoma. We recorded the sex of the children of 197 patients with this disease who were participating in an epidemiologic stud