Advanced search    

Search: *

1,097,567 papers found. Showing first 1,000 results.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

CPANNatNIC software for counter-propagation neural network to assist in read-across

Background CPANNatNIC is software for development of counter-propagation artificial neural network models. Besides the interface for training of a new neural network it also provides an interface for visualisation of the results which was developed to aid in interpretation of the results and to use the program as a tool for read-across. Results The work presents the details of the ...

Partial relay-based cooperative primary user detection in cognitive radio networks

In order to identify spectrum holes, secondary users (SUs) should detect whether the spectrum band is occupied by primary user (PU). Cooperative PU detection is the most prevalent PU detection method in cognitive radio (CR) networks. Existing cooperative PU detection usually consumes a dedicated reporting channel to share the detection results. This paper proposes a partial ...

Microbicidal activity of N-chlorotaurine in combination with hydrogen peroxide

N-chlorotaurine (NCT) and hydrogen peroxide are powerful endogenous antiseptics. In vivo, the reaction between hydrogen peroxide and metal ions leads to the formation of free hydroxyl radicals, which have an increased bactericidal activity. This study examined whether there is an additive antimicrobial effect of NCT combined with hydrogen peroxide. Additionally, it was tested if ...

Cryogenic transmission electron microscopy: the technique of choice for the characterization of polymeric nanocarriers

This letter is meant to make scientists aware of the proper application of transmission electron microscopy (TEM) for the assessment of polymeric self-assemblies. Cryogenic (cryo)-TEM should be the method of choice. Here, we show the difference in morphologies observed in the same sample when using cryo-TEM and when using TEM with drying, demonstrating the importance of choosing ...

Optimization of diagnostic performance for differentiation of recurrence from radiation necrosis in patients with metastatic brain tumors using tumor volume-corrected 11C-methionine uptake

Background Tumor to normal tissue ratio (T/N ratio) on 11C-methionine (11C-MET) positron emission tomography/computed tomography (PET/CT) is affected by variable factors. We investigated whether T/N ratio cutoff values corrected according to metabolic tumor volume (MTV) could improve the diagnostic performance of 11C-MET PET/CT for diagnosis of recurrence in patients with ...

Clinical and imaging-based prognostic factors in radioembolisation of liver metastases from colorectal cancer: a retrospective exploratory analysis

Background The aim of this study was to investigate the relationship between absorbed dose and response of colorectal cancer liver metastases treated with [90Y]-resin microspheres and to explore possible clinical and imaging derived prognostic factors. Methods FDG PET/CT was used to measure response of individual lesions to a measured absorbed dose, derived from post-treatment 90Y ...

Evaluation of a duty-cycled asynchronous X-MAC protocol for vehicular sensor networks

An asynchronous medium access control (MAC) duty-cycled protocols have higher energy efficiency and lower packet latency than synchronized ones due to reduced idle listening. Moreover, they provide efficient utilization of energy supplied to mobile sensors. They are considered very important in MAC protocols due to the adverse effects of hidden terminals which causes energy ...

De gezonde keuze aan de formatietafel

Vroeger zag je de koekjes op tafel bij de informateur. Nu staan er gezonde snacks en water. Een gezonde keuze op een bijzonder moment geagendeerd.

Thermostabilization of the uronate dehydrogenase from Agrobacterium tumefaciens by semi-rational design

Aldaric acids represent biobased ‘top value-added chemicals’ that have the potential to substitute petroleum-derived chemicals. Until today they are mostly produced from corresponding aldoses using strong chemical oxidizing agents. An environmentally friendly and more selective process could be achieved by using natural resources such as seaweed or pectin as raw material. These ...

Brandstichting in behandelcentrum

In behandelcentrum De Schar in Schagen woedt een brand in een van de gebouwen. Nog geen week later is het weer raak. Twee bewoners worden voor brandstichting aangehouden, van wie er één later bekent

Overcoming resistance against managed care – insights from a bargaining model

Recent healthcare reforms have sought to increase efficiency by introducing managed care (MC) while respecting consumer preferences by admitting choice between MC and conventional care. This article proposes an institutional change designed to let German consumers choose between the two settings through directing payments from the Federal Health Fund to social health insurers ...

Competitive strategies among Ontario farms marketing direct to consumers

This paper examines the importance of two resources, namely a market orientation and an entrepreneurial orientation, in new product development and satisfaction with firm performance among direct and alternative marketers. Using a partial least squares structural equation model and data from a 2013 survey, this paper models the effect of a market orientation and entrepreneurial ...

Two-layer similarity fusion model for cover song identification

Various musical descriptors have been developed for Cover Song Identification (CSI). However, different descriptors are based on various assumptions, designed for representing distinct characteristics of music, and often differ in scale and noise level. Therefore, a single similarity function combined with a specific descriptor is generally not able to describe the similarity ...