Search results for "diameter [Area]"

showing 10 items of 16 documents

Phenotypic traits of berries and seeds of Sicilian grape cultivars (Vitis vinifera L.)

2020

Abstract Grapevine is characterized by high variability in seed and berry morphology and their phenotypic traits are usually used to describe V. vinifera varieties. The goal of this study was to investigate the phenotypic diversity of berry and seed traits and the relationships between berry and seed morphological characteristics of autochthonous accessions of Sicilian germplasm. In two seasons, twenty bunches per cultivar were harvested at technological maturity. Berry weight; berry longitudinal and transversal diameters; seed number/weight per berry; and seed length, thickness, width and beak length were determined, after which the diameter ratio was calculated. Black and white cultivars …

0106 biological sciences0301 basic medicineGermplasmHigh variabilityfood and beveragesBerryPhenotypic traitHorticultureBiology01 natural scienceslanguage.human_languageSettore AGR/03 - Arboricoltura Generale E Coltivazioni Arboree03 medical and health sciencesHorticultureDiameter ratio030104 developmental biologylanguageBerry Seed Shape Size Beak Stummer’s and Perret’s indicesCultivarVitis viniferaSicilian010606 plant biology & botany
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An assessment of the floristic composition, structure and possible origin of a liana forest in the Guayana Shield

2015

Liana is a life form that possess high importance in many neotropical forests. Density of climbers apparently increases with the intervention rate (eg. logging). The aim of this work is to characterize the structure, floristic composition and soils of a sector classified as Liana Forest (LF). We identified a LF sector in a not-logged area; three 1 ha square plots were measured (individuals ≥ 10 cm dbh, “diameter at breast height”). In each plot we evaluate four 100 m2 square understory sub-plots (all spermatophyta individuals < 10 cm dbh). LF has a low canopy (< 15 m) and is dominated by Alexa imperatricis and Pentaclethra macroloba. Basal area (20.4 m2ha-1) and diversity (H´= 2.6) ar…

0106 biological sciencesCanopyfood.ingredientEcologyForest managementDiameter at breast heightForestryEdaphicPlant ScienceUnderstoryBiology010603 evolutionary biology01 natural sciencesBasal areafoodLianaPentaclethra macrolobaEcology Evolution Behavior and Systematics010606 plant biology & botany
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CT-Determined Maximum Pulmonary Artery to Ascending Aorta Diameter Ratio in Nonsevere COVID-19 Patients

2021

2019-20 coronavirus outbreakCoronavirus disease 2019 (COVID-19)business.industrySARS-CoV-2Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)COVID-19Pulmonary ArteryDiameter ratioText miningTomography x ray computedRadiology Nuclear Medicine and imagingmedicine.arteryPulmonary arteryAscending aortaMedicineHumansRadiology Nuclear Medicine and imagingbusinessNuclear medicineLetters to the EditorTomography X-Ray ComputedAortaAcademic Radiology
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The organismic and the continuous approaches applied to phytosociological relationships in a lowland neotropical forest, Venezuela

2011

Abstract The Organismic and the Continuous theories are traditionally considered as antagonist in ecology studies. In this research, we make the floristic characterization of different forest communities and establish the corresponding classification, taking into account the approaches derived from the theories aforementioned. We used 1 ha plots to evaluate individuals bigger than 10 cm dbh (diameter at breast height). In each one of that plots, four sub-plots of 100 m2 were measured, to study all the spermatophyta in the understory. The data obtained were considered in an Enlarged Importance Index (EII), for each species in each plot. Then, the phytosociological relationships were establis…

Carapa guianensisfood.ingredientved/biologyEcologyEcology (disciplines)ved/biology.organism_classification_rank.speciesDiameter at breast heightPlant ScienceUnderstoryVegetationFloristicsfoodGeographyPentaclethra macrolobaEcology Evolution Behavior and SystematicsPlant Biosystems - An International Journal Dealing with all Aspects of Plant Biology
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How to derive the analytical capacity model for not-conventional urban roundabouts

2008

The inapplicability of current methods for analyzing operations of urban not-conventional roundabouts (i.e. not referable to standard schemes) hampers seriously the assessment of their operational performances. Moreover, local constraints and the road network structure have produced lots of geometric layouts that make hard to propose an only framework to explain performances of not-conventional roundabouts. Also for these intersections it is hoped to have scientifically based methods to analyze operations with a proper reliability. Starting from these considerations, the paper shows the conceptual path followed to analyze operations at not-conventional roundabouts along an arterial of Paler…

Engineeringmultilane large diameter roundaboutsbusiness.industryField dataNetwork structureTraffic flowOperationsField (computer science)Transport engineeringHeadwayRoundaboutSettore ICAR/04 - Strade Ferrovie Ed AeroportiheadwayLarge diameterbusinessIntersection (aeronautics)Operations headway multilane large diameter roundabouts.
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Human impact diminishes seedling species richness in Kakamega Forest, Kenya

2008

Summary Anthropogenic forest fragmentation and other kinds of human disturbance, such as selective logging, can reduce the diversity of plant and animal species. To evaluate the impact of fragmentation and small-scale disturbance on forest regeneration, we assessed species richness and total abundance of adult trees in comparison with seedlings in the heavily fragmented and disturbed Kakamega Forest, western Kenya. In nine differently disturbed 1-ha study blocks distributed across the main forest and fragments, we mapped all trees >10 cm in diameter at breast height. Additionally, we established ninety 1-m 2 seedling plots within these 1-ha study blocks which were monitored over 2.5 years. …

Fragmentation (reproduction)Disturbance (ecology)Abundance (ecology)EcologySeedlingLoggingDiameter at breast heightRainforestSpecies richnessBiologybiology.organism_classificationEcology Evolution Behavior and SystematicsBasic and Applied Ecology
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Effect of Stem Snapping on Aspen Timber Assortment Recovery in Hemiboreal Forests

2020

Post-disturbance salvage logging mitigates economic loss after windthrow, and the value of salvaged timber is strongly linked to its quality and dimensions. We studied the occurrence of wind-induced damage of aspen in the hemiboreal forests of Latvia based on data from the National Forest Inventory and additional measurements. Individual tree data from three re-measurement periods were linked to follow a tree condition (live, broken, uprooted) and to link tree characteristics to a respective snag. Three linear models were developed to assess factors affecting the snapping height. An assortment outcome was calculated for undamaged and salvaged trees using the bucking algorithm, and timber va…

HemiborealDiameter at breast height<i>Populus tremula</i>wind damageForestrylcsh:QK900-989Windthrowstem breakageSnagwindthrowAnimal sciencetimber value reductionBreakagelcsh:Plant ecologyVolume reductionTree (set theory)Salvage loggingMathematicsForests
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Early and midterm outcomes of bioresorbable vascular scaffolds for ostial coronary lesions: insights from the GHOST-EU registry.

2016

Aims: We aimed to investigate the outcomes of bioresorbable vascular scaffolds (BVS) in coronary ostial lesions. Ostial lesions represent a challenging angiographic subset, with higher event rates compared with non-ostial lesions. BVS might be associated with advantages over the long term, but their safety in this setting remains to be explored. Methods and results: Procedural and 12-month follow-up data from consecutive patients treated with BVS for lesions located at the ostium of the right (RCA), left anterior (LAD) or circumflex (LCX) coronary in 11 European centres were collected. The primary device-oriented endpoint was defined as a combination of cardiovascular death, target vessel m…

LCX (29Target lesionMale52%). Patients presenting with ostial lesions did not differ from the remaining cohort except for a higher incidence of prior revascularisation. Predilation was performed in 97% of the lesions (vs. 96% in non-ostialp= 0.035)medicine.medical_treatmentMyocardial Infarction304 patients with a mean age of 62 +/- 11years. There were 90 ostial lesions (5.8%) in 84 patients (6.4%) located at the ostial RCA (14Coronary Artery Disease030204 cardiovascular system & hematologyCoronary artery diseasebut their safety in this setting remains to be explored. Methods and results: Procedural and 12-month follow-up data from consecutive patients treated with BVS for lesions located at the ostium of the right (RCA)0302 clinical medicineAbsorbable Implants030212 general & internal medicineMyocardial infarctionCircumflexRegistriesTissue Scaffolds32%)Drug-Eluting StentsMiddle AgedThrombosisCoronary VesselsAims: We aimed to investigate the outcomes of bioresorbable vascular scaffolds (BVS) in coronary ostial lesions. Ostial lesions represent a challenging angiographic subset with higher event rates compared with non-ostial lesions. BVS might be associated with advantages over the long term but their safety in this setting remains to be explored. Methods and results: Procedural and 12-month follow-up data from consecutive patients treated with BVS for lesions located at the ostium of the right (RCA) left anterior (LAD) or circumflex (LCX) coronary in 11 European centres were collected. The primary device-oriented endpoint was defined as a combination of cardiovascular death target vessel myocardial infarction or target lesion revascularisation. The database included a total of 1549 lesions in 1304 patients with a mean age of 62 +/- 11years. There were 90 ostial lesions (5.8%) in 84 patients (6.4%) located at the ostial RCA (14; 16%) LCX (29; 32%) or LAD (47; 52%). Patients presenting with ostial lesions did not differ from the remaining cohort except for a higher incidence of prior revascularisation. Predilation was performed in 97% of the lesions (vs. 96% in non-ostial p= 0.618) post-dilation in 43% (versus 58% in the non-ostial group p= 0.008). At quantitative coronary angiography treatment of ostial lesions was associated with higher residual stenosis (30% [23-41] vs. 26% [20-37] p= 0.035) but no difference in minimum lumen diameter existed (p= 0.447). Follow-up data were available at 385 [362-465] days. The 12-month Kaplan-Meier estimated rates of scaffold thrombosis were 4.9% and 2.0% (ostial and non-ostial lesion groups respectively log-rank p= 0.005). The device-oriented composite endpoint occurred respectively in 12.6% and 4.6% at 12 months (log-rank p= 0.001). Treatment of ostial lesions was an independent predictor of this endpoint (p= 0.0025 HR 2.65 [1.41-4.97]).OstiumAims: We aimed to investigate the outcomes of bioresorbable vascular scaffolds (BVS) in coronary ostial lesions. Ostial lesions represent a challenging angiographic subsetTreatment Outcomein 12.6% and 4.6% at 12 months (log-rank p= 0.001). Treatment of ostial lesions was an independent predictor of this endpoint (p= 0.0025CardiologyFemale549 lesions in 1medicine.symptomCardiology and Cardiovascular MedicineAdultpost-dilation in 43% (versus 58% in the non-ostial groupmedicine.medical_specialtyor LAD (47HR 2.65 [1.41-4.97])but no difference in minimum lumen diameter existed (p= 0.447). Follow-up data were available at 385 [362-465] days. The 12-month Kaplan-Meier estimated rates of scaffold thrombosis were 4.9% and 2.0% (ostial and non-ostial lesion groupsrespectivelyLesion03 medical and health sciencesPercutaneous Coronary Interventionwith higher event rates compared with non-ostial lesions. BVS might be associated with advantages over the long termleft anterior (LAD) or circumflex (LCX) coronary in 11 European centres were collected. The primary device-oriented endpoint was defined as a combination of cardiovascular deathInternal medicinemedicineHumanstarget vessel myocardial infarction or target lesion revascularisation. The database included a total of 1Agedp= 0.008). At quantitative coronary angiographybusiness.industryPercutaneous coronary interventionp= 0.618)treatment of ostial lesions was associated with higher residual stenosis (30% [23-41] vs. 26% [20-37]log-rank p= 0.005). The device-oriented composite endpoint occurredmedicine.diseaseSurgery16%)businessEuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology
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Effect of the height-to-diameter ratio on the mass transfer and mixing performance of a biotrickling filter

2017

BACKGROUND Biotrickling filters (BTFs) are among the most widely used biological technologies for air pollution control. The pollutant removal rate in BTFs relies to a large extent on its gas–liquid mass transfer performance. Therefore, knowledge of the design parameters affecting the mass transfer and mixing performance of full-scale BTFs is of paramount importance. RESULTS This work showed that the height-to-diameter (H/D) ratio is an important parameter in the design of BTFs devoted to air pollution control. The H/D ratio significantly affected the mass transfer and mixing performance of the BTF with and without additional stirring in the holding tank. It was observed that under the same…

Mass transfer coefficientWork (thermodynamics)Materials scienceRenewable Energy Sustainability and the EnvironmentGeneral Chemical EngineeringOrganic ChemistryMixing (process engineering)Environmental engineering02 engineering and technologyMechanics010501 environmental sciences021001 nanoscience & nanotechnology01 natural sciencesPollutionInorganic ChemistryDiameter ratioFilter (large eddy simulation)Fuel TechnologyLiquid velocityMass transferHolding tank0210 nano-technologyWaste Management and Disposal0105 earth and related environmental sciencesBiotechnologyJournal of Chemical Technology &amp; Biotechnology
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Assessing the biomass of shrubs typical of Mediterranean pre-forest communities

2012

One of the most outstanding issues of current environmental research is the need of reliable assessments of carbon stock (i.e. above-ground (a.g.) and below-ground biomass, deadwood, litter, and organic soil matter) within forest ecosystems. Although shrub vegetation plays an important role in accumulating carbon in many Mediterranean environments, there is still very little knowledge on the carbon they store. In this article, we analyze the a.g. carbon stock of several Mediterranean shrubby communities in Sicily (Italy), dominated by Pistacia lentiscus, Chamaerops humilis, Euphorbia dendroides and Spartium junceum. Plant samples for each species were selected, and morphometric attributes (…

Mediterranean climateBiomass (ecology)Settore AGR/05 - Assestamento Forestale E SelvicolturabiologyEcologyved/biologySpartiumved/biology.organism_classification_rank.speciesDiameter at breast heightPistacia lentiscus Chamaerops humilis Euphorbia dendroides Spartium junceum shrub inventoryChamaerops humilisPlant Sciencebiology.organism_classificationShrubEuphorbia dendroidesEuphorbia dendroidesPistacia lentiscusForest ecologyEnvironmental scienceShrub inventorySpartium junceumEcology Evolution Behavior and SystematicsPistacia lentiscusPlant Biosystems - An International Journal Dealing with all Aspects of Plant Biology
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