Πλοήγηση ανά Θέμα "Biology"
Αποτελέσματα 1-20 από 64
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Abdominal setae and midgut bacteria of the mudshrimp Pestarella tyrrhena
(2009)We investigated the diversity of the bacterial 16S rRNA genes occurring on the abdominal setal tufts and in the emptied midgut of the marine mudshrimp Pestarella tyrrhena (Decapoda: Thalassinidea). There were no dominant ... -
Allometric biomass models for european beech and silver fir: Testing approaches to minimize the demand for site‐specific biomass observations
(2020)In this paper, site‐specific allometric biomass models were developed for European beech (Fagus sylvatica L.) and silver fir (Abies alba Mill.) to estimate the aboveground biomass in Șinca virgin forest, Romania. Several ... -
Biological and environmental influences in visuospatial abilities
(2001)Sex differences in cognition have been the focus of intense debate for years. In this study, we examined the hypothesis that the pattern of sex differences in a visuospatial task may be differential due to environmental ... -
Birds in a complex agricultural landscape in Central Greece: the role of landscape elements and the landscape matrix
(2012)Agricultural environments play a key role in the conservation of biodiversity in Europe. The vast majority of agricultural lands, however, are located in the non-designated wider countryside embedding protected Natura 2000 ... -
Characterization of methanogenic and prokaryotic assemblages based on mcrA and 16S rRNA gene diversity in sediments of the Kazan mud volcano (Mediterranean Sea)
(2008)The diversity of the methyl-coenzyme reductase A (mcrA) and 16S rRNA genes was investigated in gas hydrate containing sediment from the Kazan mud volcano, eastern Mediterranean Sea. mcrA was detected only at 15 and 20 cm ... -
A classification system based on a new wrapper feature selection algorithm for the diagnosis of primary and secondary polycythemia
(2013)Primary and Secondary Polycythemia are diseases of the bone marrow that affect the blood's composition and prohibit patients from becoming blood donors. Since these diseases may become fatal, their early diagnosis is ... -
Classification tree based protein structure distances for testing sequence-structure correlation
(2008)A methodology for testing the correlation between the sequence and structure distances of proteins is proposed. Structure distances were derived by applying a forward growing classification tree algorithm on defined ... -
Comparative analysis of phase difference estimation methods quantifying asynchronies between compartmental chest wall volume signals
(2009)Asynchronous breathing movements may be observed in the presence of pulmonary disease, such as chronic obstructive pulmonary disease (COPD). This study was undertaken in an attempt to propose a reliable methodology to ... -
Construction of Confidence Regions in the ROC Space after the Estimation of the Optimal Youden Index-Based Cut-Off Point
(2014)After establishing the utility of a continuous diagnostic marker investigators will typically address the question of determining a cut-off point which will be used for diagnostic purposes in clinical decision making. The ... -
Correlation between radiation-induced telomerase activity and human telomerase reverse transcriptase mRNA expression in HeLa cells
(2006)Purpose: To quantify and correlate human telomerase reverse transcriptase (hTERT) mRNA expression with telomerase activity (TA) after ionizing irradiation of HeLa cells. Materials and methods: TA and hTERT mRNA expression ... -
Digoxin and Adenosine Triphosphate Enhance the Functional Properties of Tissue-Engineered Cartilage
(2015)Toward developing engineered cartilage for the treatment of cartilage defects, achieving relevant functional properties before implantation remains a significant challenge. Various chemical and mechanical stimuli have been ... -
Dynamic simulation of a coated microbubble in an unbounded flow: Response to a step change in pressure
(2017)A numerical method is developed to study the dynamic behaviour of an encapsulated bubble when the viscous forces of the surrounding liquid are accounted for. The continuity and Navier-Stokes equations are solved for the ... -
Enemy at the gates: introduction potential of non-indigenous freshwater crayfish in Greece via the aquarium trade
(2014)Indigenous freshwater crayfish species (ICS) are important biodiversity components and desirable fishery targets. However, ICS populations are increasingly threatened by various anthropogenic stressors. Moreover, established ... -
Energetic loads and informational entropy during insect metamorphosis: Measuring structural variability and self-organization
(2011)In this work an information theory approach is presented for measuring structural variability during insect metamorphosis. Following a self-organizational perspective, the underlying assumption is that an insect pupa is a ... -
Establishing the resistance of Myzus persicae (Sulzer) by molecular methods
(2008)In two years of investigating resistance of the peach-potato aphid Myzus persicae (Sulzer) by molecular methods, several types of resistance were established in the majority of individuals from peach and tobacco in Serbia ... -
Estimation and reconstruction of shore-based recreational angling fisheries catches in the Greek Seas (1950-2010)
(2013)The present work aims to estimate the shore-based recreational angling fisheries catches per species and Greek subarea that are not recorded by the official authorities in order to have a better picture of the total fish ... -
An evolutionary theory based on a protein-mRNA co-synthesis hypothesis
(2011)A new hypothesis is proposed, that early life possessed a mechanism for the simultaneous synthesis of a polypeptide and its coding mRNA. Early tRNAs and mRNAs are considered to have been pairs of simple complementary ... -
Examining the stability of genetic risk effect as evidence accumulates in the context of meta-analysis
(2013)The recursive cumulative meta-analysis (RCM) of genetic association studies explores the relative change of the cumulative risk effect (e.g. OR) in time, indicating the stability of risk effect as evidence accumulates. ... -
An extension of fuzzy topological approach for comparison of genetic sequences
(2015)Bioinformatics is a relatively new discipline where Mathematics are applied in the analysis of genetic sequences. The analysis of the genetic material of living organisms which consist of nucleic acids DNA and RNA is of ... -
Extrachromosomal genetic elements detected in Escherichia coli treated with the antibacterial agents kanamycin and benzenetriol
(2013)Resistance to kanamycin was induced in Escherichia coli cells subjected to gradually increasing concentrations of the amino glycoside antibiotic kanamycin. The frequency of the appearance of resistance is not in agreement ...