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Plot investigation on rill flow resistance due to path tortuosity

International Soil and Water Conservation Research 2023年第4期11卷 602-609页

作者： Francesco G.Carollo Costanza Di Stefano Alessio Nicosia vincenzo palmeri vincenzo Pampalone Vito Ferro Department of Agricultural Food and Forest SciencesUniversity of PalermoViale delle ScienzeBuilding 490128PalermoItaly NBFC National Biodiversity Future Center90133PalermoItaly

The path tortuosity t is an indicator of rill morphology accounting for the deviation of the thalweg from a straight *** effect of t on flow resistance has been little investigated for *** paper reports the results of a plot investigation aimed to establish the suitable accuracy of the rill thalweg measurement to determine the tortuosity parameter and to test the reliability of a theoretical flow resistance *** rills were incised in clay soil(CS)and clay-loam soil(LS)and shaped by a clear flow *** three-dimensional Digital Terrain Models were created by the Structure from Motion *** rills on LS,an approximate thalweg was tracked by photo-interpretation,and a specific calculation routine was applied to identify the cross sections with a constant spacing *** actual rill thalweg was obtained as the line joining the lowest points of these *** the different tested d values,d=0.075 m was chosen to determine *** both CS and LS,the Darcy-Weisbach friction factorffeatured a non-monotonic relation with t,which was explained as the result of three additive components due to bed roughness,sediment transport,and localized energy losses due to *** effect of the former two components onff contrasts that of the third,resulting in a linearly decreasing f-t relationship and constant flow velocity for the three lowest tortuosity values,and an increased friction factor and reduced flow velocity for the highest tortuosity *** flow resistance law was positively tested,and the predicted friction factor was dependent on t.

关键词： Rill erosion Tortuosity Rill morphology Friction factor Rill flow resistance

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Ability of soil bacterial composition as an indicator of levels of soil erosion in a badland

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International Journal of Sediment Research 2022年第4期37卷 493-504页

作者： Gaetano Guida vincenzo palmeri Luca Settanni Raimondo Gaglio Marco Tolone Vito Ferro Department of Agricultural Food and Forest SciencesUniversity of Palermo

Calanchi(plural of calanco) are typical Italian badlands created by a combination of morphogenetic processes(rill and interrill erosion, gullying, piping, and mass movements) mainly originated by the effect of water. Calanchi are characterized by the sparse and patchy distribution of vegetation, and, in interplant areas, the soil surface is colonized by an association of organisms known as biological soil crust(BSC). A morphometric analysis of 45 basins in the studied calanchi area, based on a high-resolution digital elevation model, showed those basins are sediment removal systems characterized by rapid and relevant erosion processes. The goal of the current research is to evaluate the bacterial composition of BSC and to recognize its signature of land degradation processes in soil samples by a microbiological analysis(culture-dependent and culture-independent approaches). Soil bacterial distribution was investigated by a culture-independent approach, applying Illumina technology in soils with different vegetation cover. Four species were detected in site A(bare soil). In sites B(sparse vegetation) and C(densely vegetated soil) 19 and 18 bacterial taxa were detected, respectively. Sites B and C were characterized by 17 species in common. The microbial communities detected at sites B and C are typical of environments unable to support vegetation and microorganisms that are not specialized to live in these environments. Biodiversity analysis of the bacterial communities of biocrusts, done using richness and evenness indices, confirmed that the composition of the BSC communities can be a signature of the intensity of soil erosion processes.

关键词： Calanchi Biological soil crust Soil bacteria Vegetation cover Water erosion

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Anxiety,depression,and quality of life in Parkinson's disease:the implications of multidisciplinary treatment

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Neural Regeneration Research 2021年第3期16卷 587-590页

作者： Viviana Lo Buono Rosanna palmeri Simona De Salvo Matteo Berenati Agata Greco Rosella Ciurleo Chiara Sorbera vincenzo Cimino Francesco Corallo Placido Bramanti Silvia Marino Giuseppe Di Lorenzo Lilla Bonanno Department of Neurobioimaging Istituto di Ricovero e Cura a Carattere Scientifico IRCCS Centro Neurolesi Bonino-PulejoMessinaItaly

Anxiety and depression in Parkinson's disease(PD)reduce well-being of the *** alterations influence motor skills and cognitive performance;moreover,they contribute significantly and independently to worsen rehabilitative treatment *** investigated anxiety,depression,and quality of life in PD patients subjected to multidisciplinary rehabilitative *** self-controlled study included 100 PD patients(49 males and 51 females with the mean age of 64.66 years)admitted to 60 days hospitalization rehabilitative program,between January 2017 and December ***,cognitive,linguistic abilities,and functional independence were evaluated at admission(T0 baseline visit)and 60 days after(T1)the multidisciplinary rehabilitation including motor exercises,speech therapies,and cognitive *** multidisciplinary rehabilitation improved functional status in PD patients and exerted its positive effects on mood,motor abilities,autonomy in the activities of daily life,perception of quality of life,cognitive performance and speech ***-motor symptoms may worsen severe disability and reduce quality of *** are often poorly recognized and inadequately ***,multidisciplinary rehabilitative training represents an optimal strategy to improve disease *** study was approved by Istituito di Ricovero e Cura a Carattere Scientifico(IRCCS)Centro Neurolesi"Bonino-Pulejo"Ethical Committee(approval No.6/2016)in June 2016.

关键词： anxiety depression multidisciplinary rehabilitation Parkinson's disease

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