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Investigation of the spatial and temporal long-term hydro-climatic trends in Upper Omo Gibe Basin, Ethiopia
Published 2025-02-01Get full text
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1463
Assessing water and energy fluxes in a regional hydrosystem: case study of the Seine basin
Published 2022-12-01“…Simulated ORCHIDEE surface water and energy fluxes feed fast surface runoff and slow recharge respectively and then is used as CaWaQS forcings to compute river discharges, hydraulic heads and temperature dynamics through space and time, within each of the hydrosystem compartments. …”
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1464
Calculation Method of Overburden Damage Height Based on Fracture Mechanics Analysis of Soft and Hard Rock Layers
Published 2019-01-01“…Under the geological condition of soft and hard rock interaction stratum, the overburden damage height can provide a quantitative support for the design of the locations of gas drainage boreholes in the roof mining fracture zone and the determination of the hydraulic fracture zone in coal seam mining. The interbedded structure of overlying mud rock and sandstone in the Lu’an mining area in Shanxi is a typical soft and hard rock interaction stratum. …”
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Computational analysis of heat transfer and fluid flow characteristics in a diamond microchannel heat sink with orthogonal ribs
Published 2025-03-01“…This study systematically analyzes the thermo-hydraulic characteristics of diamond microchannel heat sinks with various rib types (rhombic transverse rib, rhombic vertical rib, and rhombic orthogonal rib) and shapes (circular orthogonal rib, rhombic orthogonal rib, forward triangular orthogonal rib, reverse triangular orthogonal rib, and square orthogonal rib) using numerical simulations performed in COMSOL Multiphysics 6.0. …”
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1468
La mise en œuvre d’un aqueduc : l’exemple de la Brévenne à Lyon
Published 2023-12-01“…Ultimately, although none of the components of the canal adheres strictly to a single template, it remains a coherent structure, while water containment –particularly on this channel– is the main concern.This stratigraphic reading cannot be separated from the planimetric perspective, made necessary by the requirement to break down a large scale construction in order to handle uneven landscapes and to employ a variety of hydraulic engineering techniques. This multi-scalar sequencing of the work, first in large segments, then, at smaller scale in sections for construction and finally in a series of worksites and workshops, seems to be essential. …”
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The Dominant Role of the Water Column in Nitrogen Removal and N2O Emissions in Large Rivers
Published 2022-06-01Get full text
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1471
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Effect of Channel Orientation and Rib Pitch-to-Height Ratio on Pressure Drop in a Rotating Square Channel with Ribs on Two Opposite Surfaces
Published 2005-01-01“…Experiments have been carried out for various rib pitch-to-height ratios <math alttext="$(P/e)$"> <mrow><mo>(</mo> <mrow> <mrow><mi>P</mi><mo>/</mo><mi>e</mi></mrow> </mrow> <mo>)</mo></mrow> </math> with a constant rib height-to-hydraulic diameter ratio <math alttext="$(e/D)$"> <mrow><mo>(</mo> <mrow> <mrow><mi>e</mi><mo>/</mo><mi>D</mi></mrow> </mrow> <mo>)</mo></mrow> </math> of <math alttext="$0.1$"> <mn>0.1</mn> </math>. …”
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Villa d’époque romaine et habitat médiéval à Mont-Saint-Jean (Sarthe) : bilan des recherches 2008-2020
Published 2022-12-01“…Two of these buildings were equipped with hydraulic installations: a forge and a possible mill. …”
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Critical technologies and geology-engineering integration practices for deep CBM production in the Yanchuannan CBM field
Published 2025-01-01“…Deep CBM production in this CBM field faces challenges including strong heterogeneity of reservoirs, single arrangement mode of production well patterns, low applicability of conventional hydraulic fracturing, excessively long conventional production cycles, and a high proportion of inefficient wells. …”
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L’apport de la géomatique à la connaissance de la partie terminale de l’aqueduc du Gier à Lyon
Published 2023-12-01“…Analysis of the cadastral map, both Napoleonic and current, clearly shows the alignment of the plots with the elevated hydraulic structure. It is thus possible to suggest alternative routes based on road or plot boundaries. …”
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Les aqueducs de Rome : les activités de la Surintendance capitoline, une contribution essentielle à la recherche
Published 2023-12-01“…They are allocated different colours on the GIS map, and linked with forms used to evaluate the resources needed for scheduled interventions.A targeted research and restoration project is currently underway on the acquedotto Traiano-Paolo, unique among the aqueducts in that components that capture water from springs near the Bracciano lake basin as well as some 57 km of ancient channels are still functioning.In 2017 the Sovrintendenza, in collaboration with the managing company ACEA ATO2 and with the support of speleo-archaeological organizations, launched a project to explore and study the artefact and map it on a GIS, in order to monitor its state of preservation and to learn more about its complex system of water capture, adduction and redistribution, which is still largely preserved in the original Roman phase.Because of the complexity of the hydraulic system, a “pilot project” was developed to determine the survey and mapping methodologies. …”
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Restructuring of small-scale constructed wetland systems and treatability of individual household wastewater through natural process
Published 2024-07-01“…While lastly, the total phosphorous decreased from 2.75 to 0.60 milligrams per literCONCLUSION: This treatment method can be effectively applied to small-scale constructed wetland systems within households. The recommended hydraulic retention time is between 29 and 60 hours under anaerobic conditions and 3 days under aerobic conditions. …”
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Waste marble sludge and calcined clay brick powders in conventional cement farina production for cleaner built environment
Published 2025-01-01“…It can be reasonably deduced from the experimental results that marble powder is a latent hydraulic mineralogical natural additive or substitute, while brick powder is an unnatural mineralogical pozzolanic additive or substitute for cement-making processes.…”
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L’aqueduc du Gier : nouvelles données sur le pont-siphon de Beaunant à Sainte-Foy-lès-Lyon (Métropole de Lyon)
Published 2023-12-01“…The presence of this masonry structure suggests that in Antiquity the main channels of the river probably passed between the piers at the bottom of the eastern slope of the valley.Beyond this indication of the old route of the river, the geoarchaeological approach also provides matter for discussion on the possible causes of the collapse of the bridge, which probably involved one or more consecutive or associated factors: weaknesses in the subsoil, the influence of meteorological factors or natural disasters.The data acquired during this excavation contribute significantly to ideas about the techniques and architectural choices that governed the construction of the bridge, together with more general thinking about the dating of a hydraulic structure as important as the Gier aqueduct, which is of not insignificant impact for the analysis of the urban development of the Roman colony of Lugdunum.…”
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