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Antioxidant Capacity and bioaccessibility of s.nergic Mango (cv. Ataulfo) Peel Phenolic Compounds in Edible Coatings Applied to Fresh-Cut Papaya

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Food and nutrition sciences 2015年第3期6卷 365-373页

作者： Gustavo Rubén Velderrain-Rodríguez Maribel Ovando-Martínez Mónica Villegas-Ochoa Jesús Fernando Ayala-Zavala Abraham Wall-Medrano Emilio álvarez-Parrilla Tomás Jesús Madera-s.ntana Humberto Astiazarán-García Orlando Tortoledo-Ortiz Gustavo Adolfo González-Aguilar Coordinación en Tecnología de Alimentos de Origen Vegetal Centro de Investigación en Alimentación y Desarrollo Hermosillo México Instituto de Ciencias biomédicas Universidad Autónoma de Ciudad Juárez Chihuahua México Departamento de nutrición Humana Coordinación de Nutrición Centro de Investigación en Alimentación y Desarrollo Hermosillo México

Edible coatings (EC) applied to fresh-cut fruits are used to increase their shelf-life and to deliver antioxidant bioactives such as phenolic compounds (PC) that reduce their oxidative damage while enhance their functional value. However, the combination of different PC may have s.nergetic, additive or antagonic effects on the final antioxidant capacity (AOXC). The aim of this study was to examine the AOXC of binary combinations of selected PC from mango peel and their bioaccessibility from 6% alginate-based EC applied to fresh-cut papaya, under simulated gastrointestinal conditions. Among equimolar (0.1 mM) combinations, gallic + protocatechuic acids (Ab) were s.nergic in radical scavenging activity (RsA) as assayed by DPPH (90% RsA) and FRAP (0.39 mg TE/mL) methods;when assayed in 6% alginate-based EC, their RsA increased (117.85% RsA, 0.88 mg TE/mL). The application of EC + Ab to papaya cubes and further in vitro digestion decreased their AOXC probably due to interactions between EC and papaya’s matrix. Therefore, further studies are needed in order to evaluate the effect of combination of phenolic and EC applied in other fruits matrix on antioxidants bioaccessibility.

关键词： Edible Coating Phenolic Acids Antioxidant Capacity bioaccessibility

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Influence of Collectiong substrates on size Distribution Measurement of n-13 and Rn-Progeny by Low Pressure Cascade Impactor in the Linac Facility

Influence of Collectiong Substrates on Size Distribution Mea...

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作者： K.Yamasaki Y.Oki n.Osada s.Yokoyama s.Tokonami A.sorimachi s.Takahashi Fujita Health University national Institute of Radiological sciences

InTRODUCTIOn:At high energy accelerators like FFAG(*** 150 MeV,*** current 1 hA),the radiation protection toward the induced airborne particulate radio-nuclides is one of the key issues for radiation safety of *** fine particle generation and induced particulate radioactivity in high energy and high dose accelerator radiation field have been Co-60 gamma irradiation facility and Linac in *** report describes mainly the experimental results which were

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Carbon dioxide adsorption and cycloaddition reaction of epoxides us.ng chitos.n–graphene oxide nanocomposite as a catalyst

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Journal of Environmental sciences 2018年第7期30卷 77-84页

作者： s.ntosh Kumar Mohmmad Y.Wani Joonseok Koh Joao M.Gil Abilio J.F.n.sobral Chemistry Center Department of ChemistryUniversity of CoimbraCoimbra 3004-535Portugal Department of Organic and nano system Engineering Konkuk UniversitySeoul 143-701Republic of Korea CFisUC Department of PhysicsUniversity of CoimbraCoimbra 3004-516Portugal

One of today＇s major challenges is to provide green materials for a cleaner environment. We have conducted studies on carbon dioxide（CO2） adsorption and conversion to valuable products by an ecofriendly approach based in chitos.n/graphene oxide（CsGO） nanocomposite film. Rheological behavior indicates that the CsGO has a better solvation property than the pure chitos.n. An adsorption capacity of 1.0152 mmol CO2/g of CsGO nanocomposite at4.6 bar was observed. The catalytic behavior of the CsGO nanocomposite in the pres.nce of tetra-n-butylammonium iodide（n-bu4 nI） as co-catalyst was evaluated for the cycloaddition of CO2 to epoxides, to give cyclic carbonates, in the abs.nce of any solvent. These results strongly suggest that the CsGO nanocomposite may open new vistas towards the development of ecofriendly material for catalytic conversion and adsorption of CO2 on industrial scale.

关键词： Chitos.n Graphene oxide Adsorption Conversion Carbon dioxide

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Importance of charge self-consistency in first-principles description of strongly correlated systems

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npj Computational Materials 2021年第1期7卷 1949-1956页

作者： swagata Acharya Dimitar Pashov Alexander n.Rudenk Malte Rösner Mark van schilfgaarde Mikhail I.Katsnels.n Institute for Molecules and Materials Radboud UniversityNijmegen 6525 AJThe Netherlands Theory and simulation of Condensed Matter King's College LondonThe StrandLondon WC2R2LSUK national Renewable Energy Laboratory Golden80401 ColoradoUSA

First-principles approaches have been successful in solving many-body Hamiltonians for real materials to an extent when correlations are weak or *** the electronic correlations become stronger often embedding methods based on first-principles approaches are used to better treat the correlations by solving a suitably chos.n many-body Hamiltonian with a higher level *** success of such embedding theories,often referred to as second-principles,is commonly measured by the quality of self-energy E which is either a function of energy or momentum or ***,E should,in principle,also modify the electronic eigenfunctions and thus change the real space charge *** such practices are not prevalent,some works that use embedding techniques do take into account these *** such cases,choice of partitioning,of the parameters defining the correlated Hamiltonian,of double-counting corrections,and the adequacy of low-level Hamiltonian hosting the correlated subspace hinder a systematic and unambiguous understanding of such ***,for a large variety of correlated systems,strong correlations are largely confined to the charge *** an adequate non local low-order theory is important,and the high-order local correlations embedding contributes become *** we study the impact of charge self-consistency within two example cases,Tisez and Crbrs,and show how real space charge re-distribution due to correlation effects taken *** within a first-principles Green's function-based many-body perturbative approach is key in driving qualitative changes to the final electronic structure of these materials.

关键词： theory charge principles

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biochar from grape pomace,a waste of vitivinicultural origin,is effective for root-knot nematode control

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biochar 2023年第1期5卷 519-541页

作者： Ángela Martínez-Gómez Maria Fe Andrés Ángel barón-sola Fernando E.Díaz-Manzano Ibraheem Yousef Ismael F.Mena Elena Díaz Óscar Gómez-Torres Azucena González-Coloma Luis E.Hernández Carolina Escobar Facultad de Ciencias Ambientales y bioquímica Universidad de Castilla-La ManchaToledoSpain Departamento de Protección Vegetal Instituto Ciencias Agrarias CSICMadridSpain Departamento de biología Universidad Autónoma de MadridMadridSpain CELLs ALbA Carrer del Llum 2-2608290Cerdanyola del VallèsBarcelonaSpain Departamento de Ingeniería Química Universidad Autónoma de MadridMadridSpain Faculty of Chemical sciences&Technologies Chemical Engineering DepartmentAv.Camilo JoséCela1213071University of Castilla-La ManchaCiudad RealSpain

Root-knot nematodes(RKns)are obligate endoparasites that feed on their host plants to complete its life cycle,repres.nting a major threat to agriculture and economy *** development of new management strategies becomes ess.ntial as effective chemical nematicides are progressively being ***,we analysed grape pomace-derived biochars,pyrolysed at 350°C(bC350)and 700°C(bC700),focus.ng on their potential for RKn *** thermal treatment of grape pomace caused an increase in the concentration of carbon and plant macro-and micronutrients,which were largely pres.nt in a water-soluble *** radiation-based Fourier transform infrared microspectroscopy data showed a general loss of carboxylic functional groups during pyrolysis,partially contributing to the alkalinisation of both biochars,mostly in *** electron microscopy coupled with energydispersive X-ray spectroscopy analysis revealed a highly porous structure filled with different crystals composed of elements such as K,Ca,Mg,P,si or Al,which could be a suitable environment for the growth of ***-derived aqueous extracts showed phytotoxicity to tomato seedlings at high concentrations,and disappeared upon dilution,but no toxic effect was observed on the nematode’s infective ***,the infective and reproductive traits of a Meloidogyne javanica population in tomato were significantly reduced(*** masses and eggs per plant)in washed-biochar-treated soil in pots(0.75%;bC350W).Therefore,the large amount of grape waste generated after wine production can be transformed into a valuable product such as biochar,effective for RKns control,thus reducing the waste management problem and contributing to a circular economy.

关键词： biochar Grape pomace Tomato Root-knot nematode control Meloidogyne spp.

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numerical study on Dry Deposition Processes in Canopy Layer

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Advances in Atmospheric sciences 1992年第4期9卷 491-500页

作者：雷孝恩 Julius s.Chang Institute of Atmospheric Physics Academia Sinica Beijing AsRC State University of New York Albany N.Y. 12205 U.S.A. coupling model between the canopy layer(CL) and atmospheric boundary layer (ABL) for the study of dry deposition velocity is developed. The model consists of six parts: chemical species conservation equation including absorptive factor the species uptake action including detailed vertical variation of absorptive element in CL momentum exchange in CL which is repres.nted by a first-order closure momentum equation with an additional larger-scale diffusive term momentum exchange in AbL which is described by a complete set of the AbL turbulent statistic parameters absorptivity (or solubility or reflection) at the surface including effects of the physical and chemical characters of the species land type seasonal and diurnal variations of the meteorological variables and deposition velocity derived by distributions of the species with height in CL. Variational rules of the concentration and deposition velocity with both height and time are simulated with the model for both corn and forest canopies. Results predicted with the bulk deposition velocity derived in the paper consist well with experimental data.

A coupling model between the canopy layer(CL) and atmospheric boundary layer (AbL) for the study of dry deposition velocity is developed. The model consists of six parts: chemical species conservation equation including absorptive factor; the species uptake action including detailed vertical variation of absorptive element in CL; momentum exchange in CL which is repres.nted by a first-order closure momentum equation with an additional larger-scale diffusive term; momentum exchange in AbL which is described by a complete set of the AbL turbulent statistic parameters; absorptivity (or solubility or reflection) at the surface including effects of the physical and chemical characters of the species, land type, seas.nal and diurnal variations of the meteorological variables; and deposition velocity derived by distributions of the species with height in CL. Variational rules of the concentration and deposition velocity with both height and time are simulated with the model for both corn and forest canopies. Results predicted with the bulk deposition velocity derived in the paper consist well with experimental data.

关键词： numerical study on Dry Deposition Processes in Canopy Layer

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Evaluation of soil erosion risk and identification of soil cover and management factor (C) for RUsLE in European vineyards with different soil management

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International soil and Water Conservation Research 2020年第4期8卷 337-353页

作者： M.biddoccu G.Guzmán G.Capello T.Thielke P.strauss s.Winter J.G.Zaller A.nicolai D.Cluzeau D.Popescu C.bunea A.Hoble E.Cavallo J.A.Gómez Institute for Agricultural and Earthmoving Machines(IMAMOTER) National Research Council of Italy(CNR)TorinoItaly Institute for sustainable Agriculture CSICCordobaSpain Institute for Land and Water Management Research Federal Agency for Water ManagementPetzenkirchenAustria Institute of Plant Protection and Institute of Integrative nature Conservation Research University of Natural Resources and Life SciencesViennaAustria Institute of Zoology University of Natural Resources and Life Sciences ViennaViennaAustria UniversitéRennes 1 Station Biologique de PaimpontUMR 6553 EcoBio35380PaimpontFrance sC JIDVEI sRI Research DepartmentJidveiRomania University of Agriculture science and Veterinary Medicine Cluj NapocaRomania

Vineyards show some of the largest erosion rates reported in agricultural areas in *** rates vary considerably under the same land use,s.nce erosion processes are highly affected by climate,soil,topography and by the adopted soil management *** also shows differences in the effect of same conservation practices on reducing soil erosion from conventional,bare soil based,*** Revised Universal soil Loss Equation(RUsLE)is commonly adopted to estimate rates of water erosion on cropland under different forms of land use and management,but it requires proper value of soil cover and management(C)factors in order to obtain a reliable evaluation of local soil erosion *** this study the ORUsCAL(Orchard RUsle CALibration)is used to identify the best calibration strategy against long-term experimental ***,ORUsCAL is used in order to apply the RUsLE technology from farm based information across different European wine-growing *** results suggest that the best strategy for calibration should incorporate the soil moisture sub-factor(sm)to provide better soil loss *** C factor,whose average values ranged from 0.012 to *** a large spatial variability due to coupling with local climate and specific local *** comparis.n across the five wine-growing regions indicates that for the soil protection management,permanent cover crop is the best measure for accomplishing sustainable erosion rates across the studied *** and temporary cover crops,that are used in areas of limited water resources to prevent competition with vines,failed to achieve sustainable erosion rates,that still need to be *** raises the need for a careful use of C values developed under different environmental conditions.

关键词： Vineyard Erosion soil management RUsLE Europe

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Effect of Ringer's solution on Wear and Friction of stainless steel 316L after Plasma Electrolytic nitrocarburis.ng at Low Voltages

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Journal of Materials science & Technology 2011年第10期27卷 906-912页

作者： n.Afsar Kazerooni M.E.bahrololoom M.H.shariat F.Mahzoon T.Jozaghi Department of Materials science and Engineering Shiraz University

A plasma electrolytic nitrocarburis.ng （PEn/C） process was performed on stainless steel 316L to improve the surface properties for us.ng as medical implants. A bath was optimised to reduce the required voltage to 150 volts. Aqueous urea-based solutions with 10% nH4Cl were prepared with slightly different amounts of na2CO3 to optimise the electrolyte composition. The surface and the cross-section morphologies were studied by scanning electron microscopy. The microstructure and the chemical composition of samples were investigated by X-ray diffraction （XRD） and energy dispersive X-ray （EDX） techniques. The microstructure of the outer layer of the coatings was found to be a complex oxide containing Cr and Fe. The wear properties of the samples were examined by us.ng a pin on disk wear test with Ringer＇s solution and were compared with their wear properties in the ambient atmosphere. The Ringe（s solution acted as a lubricant, reducing friction coefficient. Hardness and roughness were also studied. The bath with the composition of 10% nH4CI and 3% na2CO3 exhibited the best tribological properties. The results showed that the tribological properties of treated samples were improved and the wear mechanism was abrasion of the pin.

关键词： Plasma electrolytic nitrocarburis.ng Ringer's solution Tribological properties

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Teachers’Interpretations of the Ethical Dimensions of Teaching on the Chinese Mainland:A Case study of Two secondary schools in shanghai

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Frontiers of Education in China 2016年第2期11卷 165-186页

作者： WAnG Lijia Manhong LAI Leslie n.K.LO Department of Education East China Normal UniversityShanghai 200062China Department of Educational Administration and Policy The Chinese University of Hong KongHong KongChina Center for Teacher Education Research Beijing Normal UniversityBeijing 100875China

This paper highlights Chinese teachers’ethical concerns in their relationships with students,colleagues,and students’*** a qualitative study of 26 teachers,it was found that the teachers were often trapped in a dilemma between teaching to students’real development and teaching to the *** ethics of professional collaboration were compromised by the dominant norms,including interpers.nal harmony and respect for older teachers,and by competition among individual teachers to demonstrate good ***,in a situation where parents’trust was diminishing,teachers assumed certain teaching and caring responsibilities for children from disadvantaged *** is suggested that the professionalization of teachers should provide them with more professional space to transform their ethical considerations into practice.

关键词： ethical dimensions of teaching teacher professionalism teacher professional development China

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biological silicon nanoparticles improve Phaseolus vulgaris L. yield and minimize its contaminant contents on a heavy metals-contaminated saline soil

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Journal of Environmental sciences 2021年第8期33卷 1-14页

作者： Mohamed T.El-saadony El-sayed M.Desoky Ahmed M.saad Rania s.M.Eid Eman selem Ahmed s.Elrys Department of Agricultural Microbiology Faculty of AgricultureZagazig UniversityZagazig 44511Egypt botany Department Faculty of AgricultureZagazig UniversityZagazig 44511Egypt biochemistry Department Faculty of AgricultureZagazig UniversityZagazig 44511Egypt Agricultural botany Department Faculty of AgricultureBenha University13736Egypt botany and Microbiology Department Faculty of ScienceZagazig University44511Egypt soil science Department Faculty of AgricultureZagazig University44511ZagazigEgypt

The s.nthesis of biological silicon nano-particles(bio-si-nPs)is an eco-friendly and lowcost *** is.no study focus.ng on the effect of bio-si-nPs on the plants grown on saline soil contaminated with heavy *** this study,an attempt was made to s.nthesis bio-si-nPs us.ng potassium silica florid substrate,and the identified Aspergillus tubingensis AM11 isolate that separated from distribution systems of the potable water.A twoyear field trial was conducted to compare the protective effects of bio-si-nPs(2.5 and 5.0 mmol/L)and potassium silicate(10 mmol/L)as a foliar spray on the antioxidant defense system,physio-biochemical components,and the contaminants contents of Phaseolus vulgaris *** on saline soil contaminated with heavy *** findings showed that all treatments of bio-si-nPs and potassium silicate significantly improved plant growth and production,chlorophylls,carotenoids,transpiration rate,net photos.nthetic rate,stomatal conductance,membrane stability index,relative water content,free proline,total soluble sugars.n,P,K,Ca2+,K+/na+,and the activities of peroxidase,catalase,ascorbic peroxidase and superoxide oxide *** of bio-si-nPs and potassium silicate significantly decreased electrolyte leakage,malondialdehyde,H2 O2,O2·-,na+,Pb,Cd,and ni in leaves and pods of Phaseolus vulgaris *** to ***-si-nPs were more effective compared to potassium *** of bio-si-nPs at the rate of 5 mmol/L was the recommended treatment to enhance the performance and reduce heavy metals content on plants grown on contaminated saline soils.

关键词： bean silicon nano-silicon Aspergillus tubingensis AM11 salinity Heavy metals

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