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1.
Plant J ; 116(5): 1201-1217, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37597203

RESUMO

Woodland strawberry (Fragaria vesca subsp. vesca) is a wild relative of cultivated strawberry (F. × ananassa) producing small and typically conical fruits with an intense flavor and aroma. The wild strawberry species, F. vesca, is a rich resource of genetic and metabolic variability, but its diversity remains largely unexplored and unexploited. In this study, we aim for an in-depth characterization of the fruit complex volatilome by GC-MS as well as the fruit size and shape using a European germplasm collection that represents the continental diversity of the species. We report characteristic volatilome footprints and fruit phenotypes of specific geographical areas. Thus, this study uncovers phenotypic variation linked to geographical distribution that will be valuable for further genetic studies to identify candidate genes or develop markers linked to volatile compounds or fruit shape and size traits.


Assuntos
Fragaria , Fragaria/genética , Fragaria/metabolismo , Frutas/genética , Frutas/metabolismo , Fenótipo , Cromatografia Gasosa-Espectrometria de Massas
2.
Opt Express ; 32(6): 10392-10407, 2024 Mar 11.
Artigo em Inglês | MEDLINE | ID: mdl-38571252

RESUMO

This paper introduces a novel framework for estimating the spectral power distribution of daylight illuminants in uncalibrated hyperspectral images, particularly beneficial for drone-based applications in agriculture and forestry. The proposed method uniquely combines image-dependent plausible spectra with a database of physically possible spectra, utilizing an image-independent principal component space (PCS) for estimations. This approach effectively narrows the search space in the spectral domain and employs a random walk methodology to generate spectral candidates, which are then intersected with a pre-trained PCS to predict the illuminant. We demonstrate superior performance compared to existing statistics-based methods across various metrics, validating the framework's efficacy in accurately estimating illuminants and recovering reflectance values from radiance data. The method is validated within the spectral range of 382-1002 nm and shows potential for extension to broader spectral ranges.

3.
Child Care Health Dev ; 50(3): e13262, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38606885

RESUMO

BACKGROUND: While constraint-induced movement therapy is strongly recommended as an intervention for infants with unilateral cerebral palsy, the optimal dosage remains undefined. This systematic review aims to identify the most effective level of intensity of constraint-induced movement therapy to enhance manual function in infants at high risk of asymmetric brain lesions or unilateral cerebral palsy diagnosis. METHODS: This systematic review with meta-analysis encompassed a comprehensive search across four electronic databases to identify articles that met the following criteria: randomised controlled trials, children aged 0-6 with at high risk or with unilateral cerebral palsy, and treatment involving constraint-induced movement therapy for upper limb function. Studies with similar outcomes were pooled by calculating the standardised mean difference score for each subgroup, and subgroups were stratified every 30 h of total intervention dosage (30-60, 61-90, >90 h). Risk of bias was assessed with Cochrane Collaboration's tool. RESULTS: Seventeen studies were included. Meta-analyses revealed significant differences among subgroups. The 30-60 h subgroup showed a weak effect for spontaneous use of the affected upper limb during bimanual performance, grasp function, and parents' perception of how often children use their affected upper limb. Additionally, this subgroup demonstrated a moderate effect for the parents' perception of how effectively children use their affected upper limb. CONCLUSIONS: Using a dosage ranging from 30 to 60 h when applying a constraint-induced movement therapy protocol holds promise as the most age-appropriate and cost-effectiveness approach for improving upper limb functional outcomes and parent's perception.


Assuntos
Paralisia Cerebral , Modalidades de Fisioterapia , Criança , Humanos , Lactente , Paralisia Cerebral/terapia , Bases de Dados Factuais , Movimento , Extremidade Superior , Recém-Nascido , Pré-Escolar
4.
Child Care Health Dev ; 50(1): e13183, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-37842871

RESUMO

BACKGROUND: Accumulation of bilirubin above normal levels is considered a neurological risk factor for both premature and full-term newborns. This systematic review aimed to determine the effect of neonatal hyperbilirubinemia on neurodevelopment in preterm and full-term newborns. METHODS: PubMed, EMBASE, Cochrane Library, CINAHL, PsycINFO, Scopus and Lilacs databases were searched for articles published until 1 June 2022. The quality of cohort and case-control studies was assessed with the Newcastle-Ottawa Scale, and the MINCir scale was used to evaluate the methodological quality of therapy studies or the therapeutic procedures. Premature neonates without neurological conditions and those born at term with hyperbilirubinemia as the sole risk factor were included. Studies reporting one or more neurodevelopmental outcomes were included with an inter-group comparison of a hyperbilirubinemia group versus a non-hyperbilirubinemia or non-pathological hyperbilirubinemia group. The main outcomes were auditory function, visual function, cognitive function, motor function, behavior, global development and neurological risk. RESULTS: The search identified 951 studies, 19 of which (n = 2210 newborns) were finally included. Fifteen of the cohort and case-control studies presented low risk of bias, and six studies showed high methodological quality. Within the preterm population, hyperbilirubinemia as the sole risk factor was not shown to affect neurodevelopment. Auditory, neurological and motor development alterations were found in the population of full-term newborns with hyperbilirubinemia, which were more evident during the first year of life. CONCLUSIONS: Elevated bilirubin levels may be a trigger for the onset of neurodevelopmental disorders in full-term infants during the first year of life. More studies are warranted in the preterm population with hyperbilirubinemia to draw conclusions about its impact on their neurodevelopment.


Assuntos
Hiperbilirrubinemia Neonatal , Transtornos do Neurodesenvolvimento , Lactente , Recém-Nascido , Humanos , Hiperbilirrubinemia Neonatal/terapia , Bilirrubina , Fatores de Risco , Estudos de Casos e Controles
5.
Phys Occup Ther Pediatr ; : 1-11, 2024 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-38764313

RESUMO

AIMS: To review the literature on the effects of vestibular training on motor function and balance in children and youth with cerebral palsy. METHODS: Eight databases (MEDLINE-PubMed, PEDro, Cochrane Library, OTSeeker, Web of Science, Scopus Database, CINAHL and SPORTDiscus.) were searched up to May 15th, 2023. Studies comparing vestibular training with other types of interventions. The DerSimonian and Laird method was employed using random effects models to calculate the pooled estimate of the effect size with confidence intervals of 95%. The risk of bias was assessed with the Cochrane Collaboration's tool and the Grading of Recommendations Assessment, Development and Evaluation approach was used to judge the certainty of the evidence for all outcomes. RESULTS: Eight studies were included comprising 226 participants with cerebral palsy. The meta-analyses demonstrated significant standardized mean differences in favor of vestibular training program compared to other technique(s) for Gross Motor Function Measure (-0.471; 95% confidence intervals: -0.919 to -0.023) and balance (-0.546; 95% confidence intervals: -0.916 to -0.176). CONCLUSIONS: Vestibular training has potential benefits in the short-term as a therapeutic approach for improving gross motor function and the balance in children and youth with cerebral palsy, but further research is needed.

6.
New Phytol ; 235(4): 1501-1514, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-35575945

RESUMO

Epigenetic inheritance can drive adaptive evolution independently of DNA sequence variation. However, to what extent epigenetic variation represents an autonomous evolutionary force remains largely elusive. Through gene ontology and comparative analyses of genomic and epigenomic variation of wild strawberry plants raised in distinct drought settings, we characterised genome-wide covariation between single nucleotide polymorphisms (SNPs) and differentially methylated cytosines (DMCs). Covariation between SNPs and DMCs was independent of genomic proximity, but instead associated with fitness-related processes such as stress responses, genome regulation and reproduction. We expected this functional SNP-DMC covariation to be driven by adaptive evolution canalising SNP and DMC variation, but instead observed significantly lower covariation with DMCs for adaptive rather than for neutral SNPs. Drought-induced DMCs frequently co-varied with tens of SNPs, suggesting high genomic redundancy as a broad potential basis for polygenic adaptation of gene expression. Our findings suggest that stress-responsive DMCs initially co-vary with many SNPs under increased environmental stress, and that natural selection acting upon several of these SNPs subsequently reduces standing covariation with stress-responsive DMCs. Our study supports DNA methylation profiles that represent complex quantitative traits rather than autonomous evolutionary forces. We provide a conceptual framework for polygenic regulation and adaptation shaping genome-wide methylation patterns in plants.


Assuntos
Fragaria , Adaptação Fisiológica/genética , Metilação de DNA/genética , Fragaria/genética , Genoma , Metilação , Herança Multifatorial , Polimorfismo de Nucleotídeo Único/genética
7.
Plant Physiol ; 187(3): 1221-1234, 2021 11 03.
Artigo em Inglês | MEDLINE | ID: mdl-34618090

RESUMO

Plant architecture is defined by fates and positions of meristematic tissues and has direct consequences on yield potential and environmental adaptation of the plant. In strawberries (Fragaria vesca L. and F. × ananassa Duch.), shoot apical meristems can remain vegetative or differentiate into a terminal inflorescence meristem. Strawberry axillary buds (AXBs) are located in leaf axils and can either remain dormant or follow one of the two possible developmental fates. AXBs can either develop into stolons needed for clonal reproduction or into branch crowns (BCs) that can bear their own terminal inflorescences under favorable conditions. Although AXB fate has direct consequences on yield potential and vegetative propagation of strawberries, the regulation of AXB fate has so far remained obscure. We subjected a number of woodland strawberry (F. vesca L.) natural accessions and transgenic genotypes to different environmental conditions and growth regulator treatments to demonstrate that strawberry AXB fate is regulated either by environmental or endogenous factors, depending on the AXB position on the plant. We confirm that the F. vesca GIBBERELLIN20-oxidase4 (FvGA20ox4) gene is indispensable for stolon development and under tight environmental regulation. Moreover, our data show that apical dominance inhibits the outgrowth of the youngest AXB as BCs, although the effect of apical dominance can be overrun by the activity of FvGA20ox4. Finally, we demonstrate that the FvGA20ox4 is photoperiodically regulated via FvSOC1 (F. vesca SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1) at 18°C, but at higher temperature of 22°C an unidentified FvSOC1-independent pathway promotes stolon development.


Assuntos
Fragaria/fisiologia , Interação Gene-Ambiente , Proteínas de Plantas/metabolismo , Meio Ambiente , Fragaria/anatomia & histologia , Fragaria/genética , Fragaria/efeitos da radiação , Meristema/anatomia & histologia , Meristema/genética , Meristema/fisiologia , Meristema/efeitos da radiação , Fotoperíodo , Proteínas de Plantas/genética
8.
Opt Express ; 30(8): 13699-13713, 2022 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-35472977

RESUMO

There is a belief that observers with color vision deficiencies (CVD) perform better in detecting camouflaged objects than normal observers. Some studies have concluded contradictory findings when studying the performance of normal and CVD observers in the camouflage detection tasks in different conditions. This work presents a literature review on this topic, dividing it into three different and contradictory types of results: better performance for CVD, for normal observers, or same performance. Besides, two psychophysical experiments have been designed and carried out in a calibrated computer monitor on both normal and CVD human observers to measure the searching times of the different types of observers needed to find camouflaged stimuli in two different types of stimuli. Results show the trend that, in our experimental conditions, normal observers need shorter searching times than CVD observers in finding camouflaged stimuli both in images of natural scenes and in images with synthetic stimuli.


Assuntos
Doenças Cardiovasculares , Defeitos da Visão Cromática , Defeitos da Visão Cromática/diagnóstico , Humanos
9.
Opt Express ; 30(11): 19757-19770, 2022 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-36221743

RESUMO

The use of blue-blocking filters is increasing in spectacle lens users. Despite the low absorption in the blue range, some users complain about these filters because they affect their color perception. In a pilot study we have evaluated how the long-term use of 8 different blue-blocking filters impact the color perception during more than 2 weeks on a group of 18 normal color vision observers, compared with a control group of 10 observers. The evaluation was done using the FM100, the Color Assessment and Diagnosis (CAD) and an achromatic point measurement. Our results show that there is a trend to worsen with the filters on.


Assuntos
Percepção de Cores , Óculos , Cor , Projetos Piloto
10.
Clin Rehabil ; 36(1): 4-14, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34407619

RESUMO

OBJECTIVE: This systematic review and meta-analysis investigates the effects of strength training program in children and adolescents with cerebral palsy to improve function, activity, and participation. DATA SOURCES: Five electronic databases (MEDLINE-Pubmed, Cochrane Library, PEDro, CINAHL, and SPORTDiscus) were systematically searched for full-text articles published from inception to 30 June 2021. REVIEW METHODS: Randomized controlled trials were included, who compared: (i) child population with spastic cerebral palsy population between 0 and 22 years; (ii) studies in which a muscle strength training program was performed and included dosing information; (iii) studies comparing strength training with other physical therapy technique(s) or untreated control group. Studies with similar outcomes were pooled by calculating standardized mean differences. Risk of bias was assessed with Cochrane Collaboration's tool for assessing the risk of bias and PROSPERO's registration number ID: CRD42020193535. RESULTS: Twenty-seven studies, comprising 847 participants with spastic cerebral palsy. The meta-analyses demonstrated significant standardized mean differences in favor of strength training program compared to other physical therapy technique(s) or untreated control group(s) for muscle strength at the knee flexors, at the knee extensor, at the plantarflexors, maximum resistance, balance, gait speed, GMFM (global, D and E dimension) and spasticity. CONCLUSION: A strength training program has positive functional and activity effects on muscle strength, balance, gait speed, or gross motor function without increasing spasticity for children and adolescents with cerebral palsy in Gross Motor Function Classification System levels I, II, and III when adequate dosage and specific principles are utilized.


Assuntos
Paralisia Cerebral , Treinamento Resistido , Adolescente , Criança , Humanos , Força Muscular , Músculos , Velocidade de Caminhada
11.
J Fish Biol ; 100(3): 625-631, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34914101

RESUMO

The broadnose sevengill shark, Notorynchus cepedianus (Péron, 1807), is a large marine top predator in temperate coastal ecosystems. Some aspects of its life history have been determined, but its growth pattern is yet to be fully understood. The authors used a multi-modelling approach and a sensitivity test to estimate growth parameters from young-of-year (YOY) length data collected off San Antonio Cape (SAC), Argentina, a critical habitat in the Southwest Atlantic Coastal Zone (SACZ). The best selected model, a sex-combined logistic growth model, estimated an asymptotic length (L∞ ) of 92.58 cm TL (95% C.I.: 86.48-105.89 cm), a growth coefficient (K) of 0.006818 days -1 (95% C.I.: 0.004948-0.008777) and a size at birth (L0 ) of 40.73 cm. The predicted annual growth (i.e., L1 - L0 ) was 43.2 cm TL. Males had smaller L0 , higher K and achieved larger sizes after 1 year. The YOY in SAC attained a larger L1 and grew faster than their Australian and South African wild counterparts. The consistent year-round presence of YOY in the SAC highlights the importance of this area as a pupping ground and potential nursery for N. cepedianus; this has direct implications for the allocation of research and management effort for the conservation of this species in the Southwest Atlantic.


Assuntos
Ecossistema , Tubarões , Animais , Argentina , Austrália , Masculino , Coluna Vertebral
12.
Pediatr Phys Ther ; 34(2): 202-210, 2022 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-35385454

RESUMO

PURPOSE: The purpose of this study was to assess the use of diagnostic assessment tools in pediatric physical therapy practice in Spain. Best practice recommendations indicate the timely use of key assessment tools to reduce the age of diagnosis of cerebral palsy (CP). METHODS: Pediatric physical therapists currently working in Spain in early intervention were recruited through targeted physical therapy entities. They were invited to complete the purpose-developed electronic survey, consisting of 45 multiple-choice questions, with 5 thematic blocks. RESULTS: Results from 140 anonymous respondents were analyzed. The average reported age when CP was suspected was 12.6 months. Most used the child's clinical history (88.1%), the Alberta Infant Motor Scale (41.3%), and Vojta Assessment Procedure (32.1%) to assess and detect CP. General Movements Assessment (25.7%) and Hammersmith Infant Neurological Examination (28.4%) were used infrequently. CONCLUSIONS: Currently, pediatric physical therapists in Spain rely on clinical history and outdated tools to identify children with CP.Digital Abstract available at: http://links.lww.com/PPT/A361 (English).Digital Abstract available at: http://links.lww.com/PPT/A362 (Spanish).


Assuntos
Paralisia Cerebral , Fisioterapeutas , Comportamento de Utilização de Ferramentas , Paralisia Cerebral/diagnóstico , Paralisia Cerebral/terapia , Criança , Humanos , Lactente , Modalidades de Fisioterapia , Inquéritos e Questionários
13.
Sensors (Basel) ; 21(17)2021 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-34502824

RESUMO

Images captured under bad weather conditions (e.g., fog, haze, mist, dust, etc.), suffer from poor contrast and visibility, and color distortions. The severity of this degradation depends on the distance, the density of the atmospheric particles and the wavelength. We analyzed eight single image dehazing algorithms representative of different strategies and originally developed for RGB images, over a database of hazy spectral images in the visible range. We carried out a brute force search to find the optimum three wavelengths according to a new combined image quality metric. The optimal triplet of monochromatic bands depends on the dehazing algorithm used and, in most cases, the different bands are quite close to each other. According to our proposed combined metric, the best method is the artificial multiple exposure image fusion (AMEF). If all wavelengths within the range 450-720 nm are used to build a sRGB renderization of the imagaes, the two best-performing methods are AMEF and the contrast limited adaptive histogram equalization (CLAHE), with very similar quality of the dehazed images. Our results show that the performance of the algorithms critically depends on the signal balance and the information present in the three channels of the input image. The capture time can be considerably shortened, and the capture device simplified by using a triplet of bands instead of the full wavelength range for dehazing purposes, although the selection of the bands must be performed specifically for a given algorithm.

14.
Opt Lett ; 45(18): 5117-5118, 2020 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-32932489

RESUMO

Recently Karepov and Ellenbogen [Opt. Lett.45, 1379 (2020)OPLEDP0146-959210.1364/OL.384970] claimed that a new metasurface-based contact lens is able to correct deuteranomaly. Unfortunately, their results are not supported by psychophysical experiments, and some key assumptions in their simulations were misinterpreted. All of this has led to wrong conclusions providing false expectations to the color vision deficiency community.

15.
Sensors (Basel) ; 20(23)2020 Dec 03.
Artigo em Inglês | MEDLINE | ID: mdl-33287222

RESUMO

Understanding naturalistic driving in complex scenarios is an important step towards autonomous driving, and several approaches have been adopted for modeling driver's behaviors. This paper presents the methodology known as "Think Aloud Protocol" to model driving. This methodology is a data-gathering technique in which drivers are asked to verbalize their thoughts as they are driving which are then recorded, and the ensuing analysis of the audios and videos permits to derive driving rules. The goal of this paper is to show how think aloud methodology is applied in the naturalistic driving area, and to demonstrate the validity of the proposed approach to derive driving rules. The paper presents, firstly, the background of the think aloud methodology and then presents the application of this methodology to driving in roundabouts. The general deployment of this methodology consists of several stages: driver preparation, data collection, audio and video processing, generation of coded transcript files, and the generation of driving rules. The main finding of this study is that think aloud protocol can be applied to naturalistic driving, and even some potential limitations as discussed in the paper, the presented methodology is a relatively easy approach to derive driving rules.

16.
Sensors (Basel) ; 20(24)2020 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-33322242

RESUMO

A proper driver characterization in complex environments using computational techniques depends on the richness and variety of data obtained from naturalistic driving. The present article proposes the construction of a dataset from naturalistic driving specific to maneuvers in roundabouts and makes it open and available to the scientific community for performing their own studies. The dataset is a combination of data gathered from on-board instrumentation and data obtained from the post-processing of maps as well as recorded videos. The approach proposed in this paper consists of handling roundabouts as a stretch of road that includes 100 m before the entrance, the internal part, and 100 m after the exit. This stretch of road is then spatially sampled in small sections to which data are associated.

17.
Sensors (Basel) ; 20(7)2020 Apr 03.
Artigo em Inglês | MEDLINE | ID: mdl-32260312

RESUMO

This paper analyzes, through computational simulations, which spectral filters increase the number of discernible colors (NODC) of subjects with normal color vision, as well as red-green anomalous trichromats and dichromats. The filters are selected from a set of filters in which we have modeled spectral transmittances. With the selected filters we have carried out simulations performed using the spectral reflectances captured either by a hyperspectral camera or by a spectrometer. We have also studied the effects of these filters on color coordinates. Finally, we have simulated the results of two widely used color blindness tests: Ishihara and Farnsworth-Munsell 100 Hue (FM100). In these analyses the selected filters are compared with the commercial filters from EnChroma and VINO companies. The results show that the increase in NODC with the selected filters is not relevant. The simulation results show that none of these chosen filters help color vision deficiency (CVD) subjects to pass the set of color blindness tests studied. These results obtained using standard colorimetry support the hypothesis that the use of color filters does not cause CVDs to have a perception similar to that of a normal observer.


Assuntos
Percepção de Cores/fisiologia , Defeitos da Visão Cromática/reabilitação , Óptica e Fotônica/métodos , Defeitos da Visão Cromática/patologia , Filtração , Humanos , Dispositivos Ópticos , Óptica e Fotônica/instrumentação
18.
Sensors (Basel) ; 20(22)2020 Nov 23.
Artigo em Inglês | MEDLINE | ID: mdl-33238413

RESUMO

In foggy or hazy conditions, images are degraded due to the scattering and attenuation of atmospheric particles, reducing the contrast and visibility and changing the color. This degradation depends on the distance, the density of the atmospheric particles and the wavelength. We have tested and applied five single image dehazing algorithms, originally developed to work on RGB images and not requiring user interaction and/or prior knowledge about the images, on a spectral hazy image database in the visible range. We have made the evaluation using two strategies: the first is based on the analysis of eleven state-of-the-art metrics and the second is two psychophysical experiments with 126 subjects. Our results suggest that the higher the wavelength within the visible range is, the higher the quality of the dehazed images. The quality increases for low haze/fog levels. The choice of the best performing algorithm depends on the criterion prioritized by the metric design strategy. The psychophysical experiment results show that the level of agreement between observers and metrics depends on the criterion set for the observers' task.

19.
Opt Express ; 27(13): 17954-17967, 2019 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-31252746

RESUMO

In our ongoing research on the effectiveness of different passive tools for aiding Color Vision Deficiency (CVD) subjects, we have analyzed the VINO 02 Amp Oxy-Iso glasses using two strategies: 1) 52 observers were studied using four color tests (recognition, arrangement, discrimination, and color-naming); 2) the spectral transmittance of the lenses were used to model the color appearance of natural scenes for different simulated CVD subjects. We have also compared VINO and EnChroma glasses. The spectral transmission of the VINO glasses significantly changed color appearance. This change would allow some CVD subjects, above all the deutan ones, to be able to pass recognition tests but not the arrangement tests. To sum up, our results support the hypothesis that glasses with filters are unable to effectively resolve the problems related to color vision deficiency.


Assuntos
Defeitos da Visão Cromática/terapia , Óptica e Fotônica/instrumentação , Adolescente , Adulto , Criança , Cor , Simulação por Computador , Feminino , Vidro/química , Humanos , Masculino , Pessoa de Meia-Idade
20.
Photochem Photobiol Sci ; 18(4): 878-883, 2019 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-30411767

RESUMO

The development of advanced photochemical processes has experienced the emergence of a promising alternative for water disinfection, different from traditional methods. The applicability has primarily been investigated in drinking and wastewater; however, new challenges related to microbiological control in marine waters necessitate evaluating the applicability of this process in such water matrices. In this study, the efficacy of persulfate (PDS) activated with UV-light against E. faecalis has been tested on the bench scale. Firstly, optimization of the different PDS concentrations (1-10 mM) and exposure times (0-5 min) was performed in distilled water. 1 mM of PDS was selected as the best dosage within the range tested. Secondly, in order to evaluate the effects of different inorganic compounds usually found in natural waters, the efficiency of the UV/PDS system was tested in three different matrices: mineral water, saltwater, and marine saltwater. Finally, different bacteria were evaluated in consortium (E. coli + E. faecalis), suggesting the same inactivation level independently on the bacterial groups and structures. The results suggest that PDS is an attractive alternative to other photochemical processes currently in use for seawater treatment and this application deserved further research.

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