Parcourir par sujet "principal component analysis"
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Ancestry of the Timorese: Age-related macular degeneration associated genotype and allele sharing among human populations from throughout the world
(2015)We observed that the third leading cause of blindness in the world, age-related macular degeneration (AMD), occurs at a very low documented frequency in a population-based cohort from Timor-Leste. Thus, we determined a ... -
Assessment of natural and anthropogenic impacts in groundwater, utilizing multivariate statistical analysis and inverse distance weighted interpolation modeling: the case of a Scopia basin (Central Greece)
(2018)In Scopia basin, central Greece, a hydrochemical investigation was completed. Groundwater samples from 41 sites were used to assess the natural and anthropogenic impacts in groundwater, utilizing the principal component ... -
Association of the Polygenic Risk Score With the Probability of Prodromal Parkinson’s Disease in Older Adults
(2021)Several studies have investigated the association of the Parkinson’s disease (PD) polygenic risk score (PRS) with several aspects of well-established PD. We sought to evaluate the association of PRS with the prodromal stage ... -
Be(e)ha(i)viour(e): assessment of honey consumption in Europe
(2022)Purpose: Honey is a product that has been consumed for thousands of years owing to honey's nutritional value and unique properties. This survey aimed to assess factors affecting consumer behaviour for honey in countries ... -
The bioactive profile of lettuce produced in a closed soilless system as configured by combinatorial effects of genotype and macrocation supply composition
(2020)The effect of cultivar and nutrient solution macrocation proportions (SK, SCa, SMg) on the bioactive content of hydroponically cultivated lettuce was evaluated on two lettuce cultivars (red and green-pigmented Salanova®) ... -
A catastrophic change in a european protected wetland: From harmful phytoplankton blooms to fish and bird kill
(2022)Understanding the processes that underlay an ecological disaster represents a major scientific challenge. Here, we investigated phytoplankton and zooplankton community changes before and during a fauna mass kill in a ... -
Co-composted biochar derived from rice straw and sugarcane bagasse improved soil properties, carbon balance, and zucchini growth in a sandy soil: A trial for enhancing the health of low fertile arid soils
(2022)Sustainable management of low fertile arid soils using carbon-rich organic amendments such as biochar and compost is of great concern from both agricultural and environmental points of view. The impact of pyrolysis, ... -
COVID-19 Phenotypes and Comorbidity: A Data-Driven, Pattern Recognition Approach Using National Representative Data from the United States
(2022)The aim of our study was to determine COVID-19 syndromic phenotypes in a data-driven manner using the survey results based on survey results from Carnegie Mellon University’s Delphi Group. Monthly survey results (>1 million ... -
Data-driven machine-learning analysis of potential embolic sources in embolic stroke of undetermined source
(2021)Background and purpose: Hierarchical clustering, a common ‘unsupervised’ machine-learning algorithm, is advantageous for exploring potential underlying aetiology in particularly heterogeneous diseases. We investigated ... -
Differential contributions of serotonergic and dopaminergic functional connectivity to the phenomenology of LSD
(2022)Rationale: LSD is the prototypical psychedelic. Despite a clear central role of the 5HT2a receptor in its mechanism of action, the contributions of additional receptors for which it shows affinity and agonist activity ... -
Genetic profiling and volatile oil content of oregano genotypes from greece
(2020)Several oregano genotypes belonging to Origanum vulgare subsp. hirtum (Link) Ietsw., O. onites L., and O. majorana L., Lamiaceae, from Greece, were genetically and chemically studied. Genetic analysis with microsatellite ... -
Implementation of chemometrics for quality control and authentication of meat and meat products
(2003)Multivariate analysis has been established as a very powerful and effective tool in classifying and grouping individual products. Principal Component Analysis, Canonical analysis, Cluster and Partial Least Squares were ... -
Implementation of quality control methods (physico-chemical, microbiological and sensory) in conjunction with multivariate analysis towards fish authenticity
(2005)Nowadays authenticity of foods and fish in particular has become of crucial importance because of high number of adulteration cases. Authenticity control has gained ground thanks to the development of several rapid ... -
Instrumental and sensory analysis of Greek wines; implementation of principal component analysis (PCA) for classification according to geographical origin
(2001)Wine is one of the most important products of Greece and other Mediterranean countries. Adulteration of wines, either in terms of geographical origin or variety, has been a major topic of debate and extensive research. ... -
A marketing survey on Greek consumers' attitudes towards fish
(2004)The commercial fish industry in Greece traditionally represents one of the most important natural resource-based industries. The process by which the wide variety of seafood products moves from the deck of a trawler, or ... -
Patterns of 1,748 Unique Human Alloimmune Responses Seen by Simple Machine Learning Algorithms
(2020)Allele specific antibody response against the polymorphic system of HLA is the allogeneic response marker determining the immunological risk for graft acceptance before and after organ transplantation and therefore routinely ... -
Phenotypes of comorbidity in OSAS patients: Combining categorical principal component analysis with cluster analysis
(2016)Phenotyping obstructive sleep apnea syndrome's comorbidity has been attempted for the first time only recently. The aim of our study was to determine phenotypes of comorbidity in obstructive sleep apnea syndrome patients ... -
Physicochemical and sensory analysis of dry bean landraces in conjunction with multivariate analysis: an exploratory approach
(2007)Five landraces of Greek common dry bean (Phaseolus vulgaris L.), were analysed for thirteen physico-chemical and eighteen sensory variables. Brightness, acceptance, odour and hardness were the most important sensory variables ... -
Predicting woody plant diversity as key component of ecosystems: A case study in central Greece
(2019)The Mediterranean basin is a global hotspot of biodiversity. Woody plants are key components of ecosystems. This article explores the environmental impacts on woody plant species richness and diversity in maquis and abandoned ... -
Psychometric properties of the Greek version of the Pain Catastrophizing Scale in patients with chronic neck pain
(2022)OBJECTIVE Examination of the construct validity and internal consistency of the Greek version of the Pain Catastrophizing Scale (PCS) in patients with chronic neck pain. METHOD Data from 45 patients with chronic neck pain, ...