Sökresultat

Filtyp

Din sökning på "*" gav 541033 sökträffar

Analysis of regional bone scan index measurements for the survival of patients with prostate cancer.

A bone scan is a common method for monitoring bone metastases in patients with advanced prostate cancer. The Bone Scan Index (BSI) measures the tumor burden on the skeleton, expressed as a percentage of the total skeletal mass. Previous studies have shown that BSI is associated with survival of prostate cancer patients. The objective in this study was to investigate to what extent regional BSI mea

A Virtual Reality Version of the Trier Social Stress Test: a Pilot Study

One of the most common methods of inducing stress in the laboratory in order to examine the stress response in healthy and clinical populations is the Trier Social Stress Test (TSST). Briefly, the participant is asked to deliver a speech and to perform an arithmetic task in front of an evaluating committee. The committee, consisting of three trained actors, does not respond emotionally during the

Outlier Removal Using Duality

In this paper we consider the problem of outlier removal for large scale multiview reconstruction problems. An efficient and very popular method for this task is RANSAC. However, as RANSAC only works on a subset of the images, mismatches in longer point tracks may go ndetected. To deal with this problem we would like to have, as a post processing step to RANSAC, a method that works on the entire (

Scanning electron microscopy investigation of monads and tetrads of basal core eudicots from the Upper Cretaceous Vilui Basin, Siberia: Evidence for reticulate evolution

Non-marine Late Cretaceous sediments from the Vilui Basin, Siberia, yield a diverse palynoflora of over 180 taxa, a third of which had a circum-polar distribution. The Vilui palynoflora belongs generally to the northerly Aquilapollenites Province admixed with minute Normapolles types, and comprises about 36-70% angiosperm pollen forms, indicating a late Campanian/early Maastrichtian age. Using a c

DNA gel particles from single and double-tail surfactants: supramolecular assemblies and release characteristics

Cationic surfactants with one alkyl chain have offered a particularly efficient control of the properties of DNA-based particles. However, most transfection lipids do not form micelles as single-chain surfactants. In this work, the formation of DNA gel particles mixing DNA (either single- (ssDNA) or double-stranded (dsDNA)) with the vesicle-forming double chain surfactant didodecyldimethylammonium

DSM performance on practical DSL systems based on estimated crosstalk channel information

This paper investigates practical aspects associated to the adoption of dynamic spectrum management (DSM) in existing digital subscriber lines (DSL) access networks. A standard-compliant crosstalk estimation method is utilized in order to retrieve the crosstalk channel information needed by, e.g., a DSM level 2 system. A DSM application framework was developed to help testing DSM in practice and i

Common variants near MC4R are associated with fat mass, weight and risk of obesity

To identify common variants influencing body mass index (BMI), we analyzed genome-wide association data from 16,876 individuals of European descent. After previously reported variants in FTO, the strongest association signal (rs17782313, P = 2.9 x 10(-6)) mapped 188 kb downstream of MC4R (melanocortin-4 receptor), mutations of which are the leading cause of monogenic severe childhood-onset obesity

Gender-related differences in the burden of non-motor symptoms in Parkinson's disease

Differences in the expression of non-motor symptoms (NMS) by Parkinson's disease (PD) patients may have important implications for their management and prognosis. Gender is a basic epidemiological variable that could influence such expression. The present study evaluated the prevalence and severity of NMS by gender in an international sample of 951 PD patients, 62.63% males, using the non-motor sy

Complementing Institutional with Localised Strategies for Climate Change Adaptation: A South–North Comparison

Climate change and disasters pose a serious risk to sustainable development. In the South local coping strategies are an important element of adaptation to climate and disaster risk. Such strategies have arisen because of the limited assistance provided by urban actors and associated social security and governance systems. In contrast, in the North local coping strategies are comparatively poorly

"Clickable" affinity ligands for effective separation of glycoproteins.

In this paper, we present a new modular approach to immobilize boronic acid ligands that can offer effective separation of glycoproteins. A new "clickable" boronic acid ligand was synthesized by introducing a terminal acetylene group into commercially available 3-aminophenyl boronic acid. The clickable ligand, 3-(prop-2-ynyloxycarbonylamino)phenylboronic acid (2) could be easily coupled to azide-f

Early diagnostic value of Bcl-3 localization in colorectal cancer.

B-cell leukemia 3 (Bcl-3) is a member of the inhibitor of κB family, which regulates a wide range of biological processes by functioning as a transcriptional activator or as a repressor of target genes. Elevated expression, sustained nuclear accumulation, and uncontrolled activation of Bcl-3 causes increased cellular proliferation or survival, dependent on the tissue and type of stimuli.

Diet selection in birds: trade-off between energetic content and digestibility of seeds

Partial preferences may occur due to differences in profitability and encounter probability between food types within a patch. In the expanding specialist diet strategy, a forager goes from being partially selective on the preferred, most profitable food, to being opportunistic, after the preferred food has been depleted to a certain critical level. We studied the diet selection strategies of bird

Choppers to optimise the repetition rate multiplication technique on a direct geometry neutron chopper spectrometer

In recent years the use of repetition rate multiplication (RRM) on direct geometry neutron spectrometers has been established and is the common mode of operation on a growing number of instruments. However, the chopper configurations are not ideally optimised for RRM with a resultant 100 fold flux difference across a broad wavelength band. This paper presents chopper configurations that will produ

Bicyclo[2.2.2]octane-derived chiral ligands-synthesis and application of BODOLs in the asymmetric reduction of acetophenone with catecholborane

An improved synthetic route to the bicyclo[2.2.2]octane-2,6-diol ligands (2,6-BODOLS) allowed an increased structural variation of the ligand side-arm. The addition of aromatic or vinylic Grignard reagents to hydroxyketone 1 was highly selective and ligands 3f-3I were isolated in 84-97% yield. The addition of alkyl Grignard reagents containing beta-hydrogens resulted in lower yields (13-71%) due t

Short-term and Long-term Exposure to Air pollution and Stroke risk

Background: Stroke is a major cause of mortality and morbidity across the world. Air pollution has become an acknowledged risk factor for stroke, especially for acute effects. There is less support for effects by chronic exposure due to the methodological challenges inherent in such studies. Such challenges can regard missing individual level data or residual confounding and can partly be overcome

"Would a man smell a rose then throw it away?" Jordanian men's perspectives on women's breast cancer and breast health

Background: Breast cancer is the most common malignancy afflicting women, and the most common cancer overall in Jordan. A woman's decision to go for screening is influenced by her social support network. This study aims to explore Jordanian men's individual and contextual perspectives on women's breast cancer and their own role in the breast health of the females within their families. Methods: An