Search results

Filter

Filetype

Your search for "*" yielded 534224 hits

Emlen funnel experiments revisited : methods update for studying compass orientation in songbirds

Migratory songbirds carry an inherited capacity to migrate several thousand kilometers each year crossing continental landmasses and barriers between distant breeding sites and wintering areas. How individual songbirds manage with extreme precision to find their way is still largely unknown. The functional characteristics of biological compasses used by songbird migrants has mainly been investigat

Exome Genotyping Identifies Pleiotropic Variants Associated with Red Blood Cell Traits

Red blood cell (RBC) traits are important heritable clinical biomarkers and modifiers of disease severity. To identify coding genetic variants associated with these traits, we conducted meta-analyses of seven RBC phenotypes in 130,273 multi-ethnic individuals from studies genotyped on an exome array. After conditional analyses and replication in 27,480 independent individuals, we identified 16 new

Care and services at home for persons with dementia. Structure, process, and outcomes.

The overall aim of this thesis was to investigate formal care and services at home, regarding structure, process, and outcomes, for persons with dementia (aged 65+ years) at risk of nursing home admission. Availability and utilization of formal care and services at home for persons with dementia, from diagnosis to end-of-life stage, in eight European countries was described in study I. A mapping f

The Gaia mission : Science, organization and present status

The ESA space astrometry mission Gaia will measure the positions, parallaxes and proper motions of the 1 billion brightest stars on the sky. Expected accuracies are in the 725 as range down to 15 mag and sub-mas accuracies at the faint limit (20 mag). The astrometric data are complemented by low-resolution spectrophotometric data in the 3301000 nm wavelength range and, for the brighter stars, radi

Baseline trabecular bone and its relation to incident radiographic knee osteoarthritis and increase in joint space narrowing score : directional fractal signature analysis in the MOST study

Purpose To explore the association of baseline trabecular bone structure with incident tibiofemoral (TF) osteoarthritis (OA) and with increase in joint space narrowing (JSN) score. Methods The Multicenter Osteoarthritis Study (MOST) includes subjects with or at risk for knee OA. Knee radiographs were scored for Kellgren–Lawrence (KL) grade and JSN at baseline, 30, 60 and 84 months. Knees (KL ≤ 1)

A 15-Gb/s wireless on-off keying link

Bit-error rate measurements for ON-OFF keying modulation at multigigabit per second rates over a V-band wireless link are presented. Serial data-rates from 2.5 to 20 Gb/s were studied for a 231-1 bit random sequence. Error-free data transfer over a 0.3-m link was achieved at up to 10 Gb/s. Acceptable bit-error rates,

Accurate prediction tools in prostate cancer require consistent assessment of included variables

Objective: The aim of this study was to create a preoperative prediction model predicting extraprostatic tumour growth in men with clinically organ-confined disease from a prospectively collected Swedish cohort. Materials and methods: The study used data from 3386 men in the prospective multi-centre Laparoscopic Prostatectomy Robot Open (LAPPRO) trial, with 14 participating urological departments.

Activity and migratory flights of individual free-flying songbirds throughout the annual cycle : Method and first case study

We describe a method and device (< 1.2 g) for recording, processing and storing data about activity and location of individuals of free-living songbirds throughout the annual cycle. Activity level was determined every five minutes from five 100 ms samples of accelerometer data with 5 s between the sampling events. Activity levels were stored on an hourly basis throughout the annual cycle, allowing

High-Precision Low-Power Wireless Nodes' Synchronization via Decentralized Control

Time synchronization is crucial for wireless sensor networks (WSNs), where operations often rely on time ordering of events. WSNs are deployed in different scenarios, and therefore their timing requirements are often related to the peculiar characteristics of the specific environment they have to act in. Synchronization is anyway always an issue: transactional applications need monotonicity of the

Mentorship in entrepreneurship education : Examining conditions for entrepreneurial learning among students

In this study we examine how formal mentorship facilitates learning for students engaged in experiential entrepreneurship education. Based on diary-interview method we build a process model that depicts how formal mentorship relations are initiated and developed over time. Our analysis identifies critical conditions for generating a prosperous learning environment in this relation. The findings pr

Membrane Processes for the Production of Bulk Fermentation Products

The ultrafiltration (UF) with diafiltration is the state-of-the-art process in the bulk pharmaceutical industry to separate solutions containing high and low molecular weight solutes. By applying UF with diafiltration, a feed stream can be separated into a concentrate with a high concentration of high molecular weight solutes and a permeate, which is nearly 100% free of high molecular weight solut

Concepts of industrial-scale diafiltration systems

The use of diafiltration is now the state-of-the-art in the food and beverage, biotech and pharmaceutical industry. In this paper, the advantages and disadvantages of the most common process modes of diafiltration, batch and continuous, are discussed. Further, the new concept of counter-current diafiltration, which leads to a significant reduction of diafiltration liquid consumption, is introduced

A Nordic multicenter survey of long-term bowel function after transanal endorectal pull-through in 200 patients with rectosigmoid Hirschsprung disease

OBJECTIVE: Transanal endorectal pull-through (ERPT) is the most popular technique to treat Hirschsprung disease (HD). Still, there is limited knowledge on long-term bowel function. This cross-sectional, multicenter study assessed long-term bowel function in a large HD population and examined predictors of poor outcome.METHODS: Patients older than four years or their parents filled out a validated