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How to model the effect of mechanical erosion control practices at a catchment scale?

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International Soil and Water Conservation Research 2021年第3期9卷 370-380页

作者： Elizeu Jonas Didoné Jean Paolo Gomes minella Daniel Gustavo Allasia Piccilli Federal University of Santa Maria Department of Soil Science1000 Avenue RoraimaCamobiCEP 97105-900Santa MariaRSBrazil Federal University of Santa Maria Department of Environmental and Sanitary Engineering1000 Avenue RoraimaCamobiCEP 97105-900Santa MariaRSBrazil

Conservation agriculture practices are a crucial factor in mitigating and controlling erosion by *** address water erosion estimates,most environmental models use the USLE,RUSLE,and MUSLE *** practices that affect soil erosion by modifying the flow pattern,such as contour farming,strip farming,or terracing,are represented within these models as a support practice(P)***,due to the difficulty in accurately mapping the P-factor,many studies choose to ignore it,using only the default value P-factor 1 which represents the absence of sowing at the level or cultivation in *** study proposes a methodology that evaluates the current P-factor based on the angle between the crop row orientation and the elevation contour *** method was tested in four areas under soybean crop fields in southern Brazil,totaling 25 km^(2).The reason for choosing four areas is to select different characteristics of rural properties and topographic *** ideal values of the P-factor are expected to be between 0.5 and 0.6;however,in our case,a P-factor greater than 0.8 was obtained in 60%of the area,indicating the low occurrence of contour farming reduces erosion *** results show that policymakers could potentially use this methodology(angle between the crop rows and contour lines)to run soil-erosion risk scenarios for a broader application of contour *** allows the P-factor to be quantified via a thematic map instead of assigning uniform P-factor *** a detailed study of the P-factor on the slopes,there is a better understanding of where to target support practices to reduce erosion.

关键词： Conservation practices Modeling P-Factor Planting efficiency

Amine-rich carbon nitride nanoparticles:Synthesis,covalent functionalization with proteins and application in a fluorescence quenching assay

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Nano Research 2019年第8期12卷 1862-1870页

作者： Gabriele Capilli Simone Cavalera Laura Anfossi Cristina Giovannoli Marco minella Claudio Baggiani Claudio Minero Department of Chemistry and NIS Center of Excellence University of Torino10125 TorinoItaly

Carbon nitride nanoparticles (CNNPs) have been employed as fluorescent sensing tools owing to their unique features, e.g. low cost production, high stability in water and high photoluminescence quantum yield. Here, an easy and versatile synthetic approach was exploited to design fluorescent nanoparticles with surface functionalities suitable for covalent binding to bioligands. High hydrophilic, brightly fluorescent CNNPs, rich of superficial amines, were obtained from the thermal condensation of urea and lysine (CNNP^Lys) and by tuning the precursor ratio and the heating time. Structure and size of the functionalized nanoparticles were characterized through infrared (IR) spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS). Their optical properties were studied by ultraviolet-visible (UV-Vis) and fluorescence spectroscopy. The superficial primary amino groups, furnished by the lysine co-precursor, enabled for covalently linking CNNP^Lys to model proteins. The CNNP^Lys-protein conjugates excited under UV irradiation emit in the 400-450 nm visible range (quantum yield 24%). The applicability of CNNP^Lys as novel fluorescent probes was demonstrated by a fluorescence quenching assay, in which gold nanoparticles (GNPs) were attached to Staphylococcal protein A and employed to quench the CNNP^Lys fluorescence by Forster resonant energy transfer (FRET). The quenching occurred upon formation of the specific binding between the GNP-linked protein A and CNNP^Lys-tagged immunoglobulins, while the inhibition of the binding resulted in the recovery of CNNP^Lys luminescence. The synthetic strategy, based on combining a "conjugated polymer"-forming unit (urea) and a co-precursor able to provide the desired functional group (lysine), allows designing innovative materials for the development of new generation fluorescence biosensors in which easily functionalized fluorophores are needed.

关键词： fluorescent probe carbon nitride nanoparticles quenching assay fluorescent materials g-C3N4 Forster resonant energy transfer (FRET)

The mechanism behind the DOM effects on methylmercury photodegradation

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Science Bulletin 2015年第13期60卷 1220-1221页

作者： Khan M.G.Mostofa Cong-Qiang Liu Marco minella Davide Vione Institute of Surface Earth System Science Tianjin University State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Dipartimento di Chimica Universita` degli Studi di Torino Centro Interdipartimentale Nat Risk

Methyl mercury(CH3Hg+),a neurotoxin,is the most toxic form of mercury that occurs in natural waters[1–4].It is a cause of concern because of increasing worldwide pollution by mercury in both water and atmosphere[3,5]... 详细信息

关键词： DOM 甲基汞光降解机制自然水域溶解有机物神经毒素去除途径

The roles of anurans in antagonistic networks are explained by life-habit and body-size

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Integrative Zoology 2022年第4期17卷 530-542页

作者： Amanda Caroline DUDCZAK Gabriel Massaccesi DE LA TORRE Lorena euclydes Karla Magalhães CAMPIÃO Department of Zoology Federal University of ParanáCuritibaBrazil Postgraduate Program in Zoology Federal University of ParanáCuritibaBrazil Postgraduate Program in Ecology and Conservation Federal University of ParanáCuritibaBrazil

Interactions among living beings are the structuring basis of ecosystems,and studies of networks allow us to identify the patterns and consistency of such *** networks reflect the energy flow of communities,and identifying network structure and the biological aspects that influence its stability is crucial to understanding ecosystem *** used antagonistic anuran interactions-predator-prey and host-parasite-to assess structural patterns and to identify the key anuran species structuring these *** tested whether anuran body-size and life-habit are related to their roles in these *** collected individuals of 9 species of anurans from an area of the Atlantic Forest in Brazil and identified their prey and helminth *** used network(modularity,specialization,and nestedness)and centrality metrics(degree,closeness,and betweenness)to identify the role of anuran species in both *** then evaluated whether anuran body-size or life-habit were related to anuran centrality using generalized linear mixed *** networks formed specialized interactions in compartments composed by key species from different *** our networks,anurans with rheophilic and cryptozoic habit are central in predator-prey networks,and those with larger body size and arboreal and cryptozoic habit in the host-parasite *** study represents a step towards a better understanding of the influential factors that affect the structure of anuran antagonist networks,as well as to recognize the functioning roles of anuran species.

关键词： diet disease food web helminth infection network centrality

The expansion of Brazilian agriculture:Soil erosion scenarios

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International Soil and Water Conservation Research 2013年第3期1卷 37-48页

作者： Gustavo H.Merten Jean P.G.minella V isiting Research Professor Dept.of Civil EngineeringL Diversity of MinnesotaMNLSA Department of Soils Federal Lniversity of Santa MariaZip Code 97105900Santa MariaRSBrazil

During the next 10 years Brazil's agricultural area will expand to meet increased domestic and worldwide demand for food,fuel,and *** choices regarding land use will determine to what degree this expansion will have adverse effects that include soil erosion,reservoir siltation,water quality problems,loss of biodiversity and social conflict,especially around indigenous *** paper presents an up-to-date inventory of soil erosion in Brazil caused by crop and livestock activities and provides estimates based on three different hypothetical land-use scenarios to accommodate the expansion of Brazilian agricultural activity by 2020:Scenario 1-expansion of cropping into areas of natural vegetation,without adoption of conservation practices;Scenario 2-expansion of cropping into areas of degraded pasture,without adoption of conservation practices;Scenario 3-expansion of cropping into areas of degraded pasture,together with conservation practices in 100%of the expanded *** worst-case scenario involves expansion of agriculture into areas of native vegetation in the Brazilian Savannah(Cerrado)and Brazilian rainforest(Amazon)biomes,and could increase total soil erosion in Brazil(currently about 800 million metric tons a year)by as much as 20%.In the best-case scenar-io,crop expansion under a conservation agriculture model would utilize currently degraded pasture,especially in the Savannah(circa 40 million hectares),reducing soil erosion in Brazil by around 20%.For this to occur,however,a national soil and water conservation policy needs to be implemented in Brazil to support a sustainable model of agriculture in which the environment can be preserved as much as possible.

关键词： Land use Conservation agriculture Degraded pasture Soil and water conservation policy

Immune response modulation in inflammatory bowel diseases by Helicobacter pylori infection

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World Journal of Gastroenterology 2023年第30期29卷 4604-4615页

作者： Gabriella Feilstrecker Balani Mariana dos Santos Cortez Jayme euclydes Picasky da Silveira Freitas Fabrício Freire de Melo Ana Carla Zarpelon-Schutz Kádima Nayara Teixeira Campus Toledo Universidade Federal do ParanáToledo 85.919-899ParanáBrazil Campus Anísio Teixeira Universidade Federal da BahiaInstituto Multidisciplinar em SaúdeVitória da Conquista 45.029-094BahiaBrazil Programa de Pós-graduação em Biotecnologia-Setor Palotina Universidade Federal do ParanáPalotina 85.950-000ParanáBrazil Programa Multicêntrico de Pós-graduação em Bioquímica e Biologia Molecular-Setor Palotina Universidade Federal do ParanáPalotina 85.950-000ParanáBrazil

Many studies point to an association between Helicobacter pylori(***)infection and inflammatory bowel diseases(IBD).Although controversial,this association indicates that the presence of the bacterium somehow affects the course of *** appears that *** infection influences IBD through changes in the diversity of the gut microbiota,and hence in local chemical characteristics,and alteration in the pattern of gut immune *** gut immune response appears to be modulated by *** infection towards a less aggressive inflammatory response and the establishment of a targeted response to tissue ***,a T helper 2(Th2)/macrophage M2 response is stimulated,while the Th1/macrophage M1 response is *** immunomodulation appears to be associated with intrinsic factors of the bacteria,such as virulence factors-such oncogenic protein cytotoxin-associated antigen A,proteins such *** neutrophil-activating protein,but also with microenvironmental changes that favor permanence of *** in the *** changes include the increase of gastric mucosal pH by urease activity,and suppression of the stomach immune response promoted by evasion mechanisms of the ***,there is a causal relationship between *** infection and components of the innate immunity such as the NLR family pyrin domain containing 3 inflammasome that directs IBD toward a better prognosis.

关键词： Cytotoxin-associated antigen A oncoprotein Gut microbiota Helicobacter pylori Helicobacter pylori neutrophilactivating protein Immunological modulation Inflammatory bowel disease NLR family pyrin domain containing 3 inflammasome

Nutrient Analysis Critical Control Point (NACCP): Hazelnut as a Prototype of Nutrigenomic Study

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Food and Nutrition Sciences 2014年第1期5卷 79-88页

作者： Laura Di Renzo Alberto Carraro Daniela minella Roberto Botta Cecilia Contessa Chiara Sartor Anna Maria Iacopino Antonino De Lorenzo Department of Agricultural Sciences University of Reggio Calabria “Mediterranea” Reggio Calabria Italy Department of Agricultural Forest and Food Sciences (DISAFA) University of Turin Grugliasco Italy Section of Section of Clinical Nutrition and Nutrigenomic Department of Biomedicine and Prevention University of Rome “Tor Vergata” Roma Italy Section of Section of Clinical Nutrition and Nutrigenomic Department of Biomedicine and Prevention University of Rome “Tor Vergata” Roma Italy I.N.DI.M. National Institute for Mediterranean Diet and Nutrigenomics Amantea Italy.

The aim of this study is to apply the Nutrient Analysis Critical Control Point (NACCP) process to ensure that the highest nutrient levels in food can determine a beneficial effect on the health of the consumer. The NACCP process involves a sequence of analysis and controls that depart from raw material production to the evaluation of the effect of nutrition on health. It is articulated through the following points: 1) identification of nutrient level in the food;2) identification of critical control points (environmental, genetic data, chemical and physical data, production technology, distribution and administration);3) establishing critical limits that can impoverish and damage the nutrient;4) establishing measures to monitor;5) establishing corrective actions. We selected as biomarkers the total phenolic content (TPC) and total antioxidant capacity (TAC) of a genotyped Italian hazelnut cultivars (Corylus e avellana L.). We performed a clinical study evaluating: a) nutritional status;b) clinical-biochemical parameters;c) low density lipoprotein oxidation (LDL-ox);d) the expression level changes of oxidative stress pathway genes in the blood cell at baseline and after 40 g/die of hazelnut consumption. In this study, we found a significant lowering (p ≤ 0.005) of LDL oxidized proteins, in association with the consumption of 40 g/d of hazelnuts. Also, we found a significant variation (p ≤ 0.005) of gene expression of antioxidant and pro-oxidant genes, between the intake of dietary with and without hazelnuts. This results support the hypothesis that the NACCP process could be applied to obtain significant benefits in terms of primary prevention and for contributing to the amelioration of food management at the consumer level.

关键词： NACCP Process Hazelnut Nutrigenomic Oxidative Stress LDL-Oxidation

Long chikungunya?An overview to immunopathology of persistent arthralgia

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World Journal of Virology 2024年第2期13卷 48-57页

作者： Jayme euclydes Picasky Silveira-Freitas Maria Luiza Campagnolo Mariana dos Santos Cortez Fabrício Freire de Melo Ana Carla Zarpelon-Schutz Kádima Nayara Teixeira Campus Toledo Universidade Federal do ParanáToledoParaná85919-899Brazil Instituto Multidisciplinar em Saúde Universidade Federal da BahiaCampus Anísio TeixeiraVitória da ConquistaBahia 45029-094Brazil Programa de Pós-graduação em Biotecnologia PalotinaUniversidade Federal do Paraná-Setor PalotinaParaná85950-000Brazil Programa Multicêntrico de Pós-graduação em Bioquímica e Biologia Molecular PalotinaUniversidade Federal do Paraná-Setor PalotinaParaná85950-000Brazil

Chikungunya fever(CF)is caused by an arbovirus whose manifestations are extremely diverse,and it has evolved with significant severity in recent *** clinical signs triggered by the Chikungunya virus are similar to those of other ***,fever starts abruptly and reaches high levels,followed by severe polyarthralgia and myalgia,as well as an erythematous or petechial maculopapular rash,varying in severity and *** 40%to 60%of affected individuals report persistent arthralgia,which can last from months to *** symptoms of CF mainly represent the tissue tropism of the virus rather than the immunopathogenesis triggered by the host's immune *** main mechanisms associated with arthralgia have been linked to an increase in T helper type 17 cells and a consequent increase in receptor activator of nuclear factor kappa-Βligand and bone *** review suggests that persistent arthralgia results from the presence of viral antigens post-infection and the constant activation of signaling lymphocytic activation molecule family member 7 in synovial macrophages,leading to local infiltration of CD4+T cells,which sustains the inflammatory process in the joints through the secretion of pro-inflammatory *** term"long chikungunya"was used in this review to refer to persistent arthralgia since,due to its manifestation over long periods after the end of the viral infection,this clinical condition seems to be characterized more as a sequel than as a symptom,given that there is no active infection involved.

关键词： Chikungunya Immunopathology Inflammation process Persistent arthralgia Signaling lymphocytic activation molecule family member 7