Sökresultat

Filtyp

Din sökning på "*" gav 529953 sökträffar

Characterization of Ambipolar GaSb/InAs Core-Shell Nanowires by Thermovoltage Measurements.

In semiconductor heterostructures with a type II band alignment, such as GaSb-InAs, conduction can be tuned from electron- to hole-dominated using an electrostatic gate. However, traditional conductance measurements give no direct information on the carrier type, and thus limit the ability to distinguish transport effects originating from the two materials. Here, we employ thermovoltage measuremen

Single Step Hybrid Coating Process to Enhance the Electrosteric Stabilization of Inorganic Particles

We report on a single-step coating process and the resulting colloidal stability of silica-coated spindle-type hematite nanoparticles (NPs) decorated with a layer of poly-(acrylic acid) (PAA) polyelectrolyte chains that are partially incorporated into the silica shell. The stability of PAA coated NPs as a function of pH and salt concentration in water was compared to bare hematite particles and si

Genomic selection in relation to bovine milk composition and processability.

Genomic selection is a new technology in which selection decisions are based on direct genomic values (DGVs) or genomic enhanced breeding values (GEBVs). The objective of this study was to evaluate the relations between DGVs and several milk traits important for both the nutritional value and processability of milk. This is a new approach and can be used to increase the knowledge on how genomic se

Bushmeat hunting changes regeneration of African rainforests.

To assess ecological consequences of bushmeat hunting in African lowland rainforests, we compared paired sites, with high and low hunting pressure, in three areas of southeastern Nigeria. In hunted sites, populations of important seed dispersers-both small and large primates (including the Cross River gorilla, Gorilla gorilla diehli)-were drastically reduced. Large rodents were more abundant in hu

Negative pressure wound therapy for post-sternotomy mediastinitis reduces mortality rate and sternal re-infection rate compared to conventional treatment

Objective: Negative pressure wound therapy (NPWT) is a recently introduced treatment modality for post-sternotomy mediastinitis. The aim of this study was to compare the mortality rate, the sternal re-infection rate and the length of hospital stay in patients with post-sternotomy mediastinitis after NPWT and conventional treatment. Methods: We retrospectively analysed 118 patients with post-sterno

Quantifying Semantic Linguistic Maturity in Children

We propose a method to quantify semantic linguistic maturity (SELMA) based on a high dimensional semantic representation ofwords created from the co-occurrence of words in a large text corpus. The method was applied to oral narratives from 108 children aged 4;0–12;10. By comparing the SELMA measure with maturity ratings made by human raters we found that SELMA predicted the rating of semantic matu

Sampling frequency affects the processing of ActiGraph raw acceleration data to activity counts.

ActiGraph acceleration data are processed through several steps (including bandpass filtering to attenuate unwanted signal frequencies) to generate the activity counts commonly used in physical activity research. We performed three experiments to investigate the effect of sampling frequency on the generation of activity counts. Ideal acceleration signals were produced in the MATLAB software. There

Fabrication Process Simulation of a PEM Fuel Cell Catalyst Layer and Its Microscopic Structure Characteristics

The catalyst layers (CLs) in proton exchange membrane fuel cells (PEMFCs) are porous composites of complex microstructures of the building blocks, i.e., Pt nano-particles, carbonaceous substrates and Nafion ionomers. It is important to understand the factors that control the microstructure formation in the fabrication process. A coarse-grained molecular dynamics (CG-MD) method is employed to inves

Stretch To See - Lateral tension strongly determines cell survival in long-term cultures of adult porcine retina.

PURPOSE: The purpose of this study is to explore the effect of lateral tension as a survival factor for retinal explants in vitro. The central nervous system (CNS) resides in a highly mechanical milieu. However, the importance of biomechanical homeostasis for normal CNS function has not been extensively explored. Diseases in which normal mechanical forces are disrupted, such as retinal detachment

Osteopontin binds and modulate functions of eosinophil-recruiting chemokines.

Allergic asthma is characterized by eosinophilic inflammation and airway obstruction. There is also an increased risk of pulmonary infection caused by Streptococcus pneumoniae, in particular during severe asthma where high levels of the glycoprotein, osteopontin (OPN) are present in the airways. Eosinophils can be recruited by chemokines activating the receptor CCR3 including eotaxin-1/CCL11, eota

A phase 1 dose-escalation study of antibody BI-505 in relapsed/refractory multiple myeloma.

Purpose: This multicenter, first-in-human study evaluated safety, tolerability, pharmacokinetics, and pharmacodynamics of BI-505, a human anti-ICAM-1 monoclonal antibody, in advanced relapsed/refractory multiple myeloma patients. Experimental design: BI-505 was given intravenously, every two weeks, at escalating doses from 0.0004 to 20 mg/kg, with extension of therapy until disease progression for

Cardiovascular predictors for long-term mortality after EVAR for AAA

The aim of this study was to assess cardiovascular predictors for all-cause long-term mortality in patients undergoing standard endovascular aneurysm repair (EVAR) for infrarenal abdominal aortic aneurysm (AAA). Consecutive patients treated with EVAR (Zenith (R) stent grafts; Cook) between May 1998 and February 2006 were prospectively enrolled in a computerized database, together with retrospectiv

Health-Related Quality of Life and Associated Factors in Chinese Women With Cervical Cancer: A 9-Month Follow-up.

BACKGROUND:: There is a lack of health-related quality of life (HRQOL) studies in Chinese women with cervical cancer. OBJECTIVE:: The objectives of this study were to investigate the HRQOL trajectory in women with cervical cancer in Mainland China in the 9 months following diagnosis and to identify factors that influence HRQOL. METHODS:: Initially, 187 patients with cervical cancer were included i

Molecular genetic characterization of the 11q13 breakpoint in a desmoplastic fibroma of bone

Desmoplastic fibroma (DFB) is a benign primary bone tumor that usually occurs in adolescents and young adults. The genetic information on DFB is very limited. We here present cytogenetic, fluorescence in situ hybridization and single nucleotide polymorphism array findings in a case that had a rearrangement involving chromosomes 11 and 19 at G-banding analysis. The results showed that the breakpoin

Implications of weighting factors on technology preference in net zero energy buildings

With the current movement towards Net Zero Energy Buildings (Net ZEBs) decisions regarding energy carrier weighting factors will have implications on which technologies could be favoured or disfavoured, and therefore adopted or not adopted, in the building sector of the near future. These implications should be taken into consideration by policy makers when developing legislation and regulations a