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Antioxidant Activity and Phytochemical Screening in Acacia rigidula Benth. Leaves

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Advances in Bioscience and Biotechnology 2024年第1期15卷 15-38页

作者： Aneth Ochoa-Negrete Rene rangel Marcus Antonius Ynalvez Ruby A. Ynalvez Department of Biology and Chemistry Texas A&M International University Laredo TX USA Department of Social Sciences Texas A&M International University Laredo TX USA

This study aimed to compare the total phenolic content (TPC) and antioxidant activities of A. rigidula extracts. It also aimed to identify phenolic acids present in the extracts. The 2,2-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), and ferric thiocyanate lipid peroxidation antioxidant assays were performed. High performance liquid chromatography was used to identify phenolic acids. There was no solvent effect on TPC nor on scavenging activities, and inhibition of lipid peroxidation (p > 0.05) among solvent extracts. On the other hand, 1:1:3 water: acetone: methanol extract (10.22 mg GAE/g sample) had significantly higher reducing potential than 50% ethanol extract (EE) (9.259 mg GAE/g sample) (p 0.05). Phenolic fraction designated as fraction 4 had the highest antioxidant activity (p < 0.05) with 69.49% ABTS scavenging activity and FRAP reducing potential, 22.26 mg of GAE/g sample. DPPH scavenging activities of fractions 4 (55.59%) and 5 (55.64%) were significantly higher than the other fractions (p A. rigidula extracts contain gallic, caffeic, vanillic, p-coumaric, salicylic acids and vanillin.

关键词： Acacia Plant Extract Antioxidant Activity Total Phenolic Acid HPLC Gallic Acid

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G-StarRAW总部

城市环境设计 2014年第6期83卷 114-121页

作者： Katrien van Dijk Michel van de Kar Tjeerd van de Sandt Saskia Simon Mario Rodriguez Marina Cogliani Jung-Won Yoon Saskia Simon Marlies Boterman Marina Coglianiv Karolina Czeczek Green van Gogh Sarah Moylan mafalda rangel Tjeerd van de Sandt Richard Hollington Ⅲ Tjeerd van de Sandt Fred Awty Philippe Braun Kaveh Dabiri Katrien van Dijk Hans Hammink Mariano Sagasta Koen Stockbroekx

G-Star RAW新总部位于阿姆斯特丹Zuid-Oost工业区内的A10路旁,其单栋建筑集G-Star RAW各类不同设施于一身,旨在刺激各部门间的互动合作。横向的总部大楼长140m,面积达27 500m2,由一个容纳G-Star RAW各个核心部门的"创作核"组成,外围则... 详细信息

G-Star RAW新总部位于阿姆斯特丹Zuid-Oost工业区内的A10路旁,其单栋建筑集G-Star RAW各类不同设施于一身,旨在刺激各部门间的互动合作。横向的总部大楼长140m,面积达27 500m2,由一个容纳G-Star RAW各个核心部门的"创作核"组成,外围则是办公室、停车位和配套设施。对比强烈的材料突显出核心创作区和外环支援活动之间的区别──外环是体量庞大的黑色

关键词： Star G-StarRAW

天空和太阳：“更”人性化设计的未来光源？日光作为照明设计的一个新出发点

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照明设计 2011年第1期 76-81页

作者： mafalda rangel 宣琦（译）

高·低!面向当代人类的需要在人们已知全世界50％的人口都聚在城市，这种情况已经到了我们要重新思考我们的城市生活环境的时候了。

关键词：人性化设计照明设计城市生活环境光源太阳日光

Gut microbiota-derived metabolites are novel targets for improving insulin resistance

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World Journal of Diabetes 2022年第1期13卷 65-69页

作者： Rosana MC Bastos Érika B rangel Hospital Israelita Albert Einstein São Paulo 05652-001SPBrazil Nephrology Division Federal University of São PauloSão Paulo 04023-900SPBrazil

The gut microbiota plays a key role in metabolic ***-microbiota-derived metabolites are found in different dietary sources,including:Carbohydrate(acetate,propionate,butyrate,also known as short-chain fatty acids,as well as succinate);protein(hydrogen sulfide,indole,and phenylacetic acid);and lipids(resveratrol-,ferulic acid-,linoleic acid-,catechin-and berry-derived metabolites).Insulin resistance,which is a global pandemic metabolic disease that progresses to type 2 diabetes mellitus,can be directly targeted by these ***-derived metabolites have broad effects locally and in distinct organs,in particular skeletal muscle,adipose tissue,and *** metabolites can modulate glucose metabolism,including the increase in glucose uptake and lipid oxidation in skeletal muscle,and decrease in lipogenesis and gluconeogenesis associated with lipid oxidation in the liver through activation of phosphatidylinositol 3-kinase-serine/threonine-protein kinase B and AMP-activated protein *** adipose tissue,gut-microbiota-derived metabolites stimulate adipogenesis and thermogenesis,inhibit lipolysis,and attenuate ***,an increase in energy expenditure and fat oxidation occurs in the whole ***,the therapeutic potential of current pharmacological and non-pharmacological approaches used to treat diabetes mellitus can be tested to target specific metabolites derived from intestinal bacteria,which may ultimately ameliorate the hyperglycemic burden.

关键词： Insulin resistance Gut microbiota Metabolites Host metabolism Metabolic organs Novel targets

Modified activated carbon with interconnected fibrils of iron-oxyhydroxides using Mn^(2+) as morphology regulator, for a superior arsenic removal from water

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Journal of Environmental Sciences 2019年第2期31卷 403-414页

作者： Cesar Nieto-Delgado Joel Gutiérrez-Martínez J.Rene rangel-Méndez Environmental Sciences Division Potosino Institute of Scientific and Technological ResearchIPICyT

The arsenic removal efficiency of iron-modified activated carbons depends greatly on the number of available iron oxide surface sites, which are given by the surface area of the anchored particles. In this sense, aiming the generation of an adsorbent with superior arsenic adsorption capacity, we developed a protocol to anchor interconnected fibrils of iron oxyhydroxides, using Mn^(2+) as a morphology regulator. The protocol was based on a microwave-assisted hydrothermal method, using bituminous based activated carbon and both Fe^(2+) and Mn^(2+) ions in the hydrolysis solution. The elemental analysis of modified carbons revealed that Mn does not anchor to the carbon. However, when Mn is included in the hydrolysis solution, the iron content in the activated carbon increased up to 3.5 wt%,without considerable decreasing the adsorbent surface area. Under specific hydrothermal conditions, the Mn^(2+) promoted the formation of iron oxide nanoparticles shaped as interconnected fibrils. This material showed a superior arsenic adsorption capacity in comparison to similar iron modified activated carbons(5 mg As/g carbon, at 2 mg As/L),attributed to the increase in quantity and availability of active sites located on the novel interconnected fibrils of iron oxyhydroxides nanostructures.

关键词： Iron oxide nanostructures Hydrothermal synthesis Microwave Adsorption capacity Kinetics

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Further investigation on the fusion of ^(6)Li with ^(209)Bi target at near-barrier energies

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Chinese Physics C 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 M.R.Cortes 胡世鹏钱建强 D.Mengoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 J.J.Valiente-Dobón D.Testov M.Mazzocco A.Gozzelino C.Parascandolo D.Pierroutsakou M.La Commara A.Goasduff D.Bazzacco D.R.Napoli F.Galtarossa F.Recchia A.Illana S.Bakes I.Zanon S.Aydin G.de Angelis M.Siciliano R.Menegazzo S.M.Lenzi J.L.Ferreira J.rangel Serkan Akkoyun L.F.Canto J.Lubian School of Physics Beihang UniversityBeijing 100191China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de Física Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil Institute for Advanced Study in Nuclear Energy&Safety Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Research and Manufacture of High Purity Germanium Materials and Fetectors Shenzhen UniversityShenzhen 518060China INFN Sezione di PadovaPadovaItaly Dipartimento di fisica Astronomia dell'Universita di padova PadovaItaly State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Institute of Atomic Energy Beijing 102413China The Key Laboratory of Beam Technology and Material Modification of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China INFN Laboratori Nazionali di LegnaroI-35020 LegnaroItaly INFN Sezione di NapoliI-80126 NapoliItaly Dipartimento di Farmacia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Department of Natural and Mathematical Sciences Faculty of EngineeringTarsus University33480 MersinTurkiye Physics Division Argonne National LaboratoryLemont-ILUSA Departamento de Matemaética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Department of Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de Física Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The complete and incomplete fusion cross sections for ^(6)Li+^(209)Bi were measured using the in-beamγ-ray method around the Coulomb *** cross sections of(deuteron captured)incomplete fusion(ICF)products were re-quantified experimentally for this reaction *** results reveal that the ICF cross section is equivalent to that of complete fusion(CF)above the Coulomb barrier and dominant near or below the Coulomb barrier.A theoretical calculation based on the continuum discretized coupled channel(CDCC)method was performed for the aforementioned CF and ICF cross sections;the result is consistent with the *** universal fusion function(UFF)was also compared with the measured CF cross section for different barrier parameters,demonstrating that the CF suppression factor is significantly influenced by the choice of potential,which can reflect both dynamic and static effects of breakup on the fusion process.

关键词： cross section incomplete fusion suppression factor weakly bound nuclei

A Systematic Review of Forensic Approaches to Disasters: Gaps and Challenges

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International Journal of Disaster Risk Science 2023年第5期14卷 722-735页

作者： Adriano Mota Ferreira Victor Marchezini Tatiana Sussel Gonçalves Mendes Miguel Angel Trejo-rangel Allan Yu Iwama Graduate Program in Disasters Institute of Science and TechnologySão Paulo State University(Unesp)São Josédos CamposSP12247-004Brazil Cemaden–National Center for Monitoring and Early Warning of Natural Disasters São Josédos CamposSP12247-004Brazil Natural Hazards Center Institute of Behavioral ScienceUniversity of Colorado BoulderBoulderCO80309USA Department of Environmental Engineering Institute of Science and TechnologySão Paulo State University(Unesp)São Josédos CamposSP12247-004Brazil Irish Climate Analysis and Research UnitS(ICARUS) Department of GeographyMaynooth UniversityMaynoothW23 F2H6KildareIreland Graduate Program in Development and Environment Federal University of ParaíbaJoão PessoaPB58051-900Brazil

Disaster forensic approaches aim to identify the causes of disasters to support disaster risk ***,few studies have conducted a systematic literature review of scientific articles that labeled themselves as a forensic approach to *** article provides a qualitative analysis of these forensic studies,focusing on five main issues:(1)the methodologies applied;(2)the forensic approaches used in the disaster risk management phases;(3)the hazards addressed;(4)if the methodologies involve social participation,and using what types of participation;and(5)if there are references to urban planning in the scientific studies *** results showed a predominance of the Forensic Investigations of Disasters(FORIN)and Post-Event Review Capability(PERC)methodologies used in isolation or *** is a need for methodologies that engage people in participatory FORIN,fostering the co-production of knowledge and action research approaches.

关键词： Dynamic pressures Forensic investigation Participatory research Risk drivers Root causes

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Microstructural evolution and microsegregation in directional solidification of hypoeutectic Al−Cu alloy:A comparison between experimental data and numerical results obtained via phase-field model

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Transactions of Nonferrous Metals Society of China 2021年第7期31卷 1853-1867页

作者： Alexandre F.FERREIRA Ivaldo L.FERREIRA rangel P.ALMEIDA Jose A.CASTRO Roberto C.SALES Zilmar A.JUNIOR Graduate Program on Metallurgical Engineering Federal Fluminense University27255-125Volta RedondaRJBrazil Federal University of Para College of Mechanical Engineering66075-110BelemPABrazil

The objective of the work is focused on predictions of microsegregation,solidification speed,dendritic arm spacings and dendrite morphology by phase-field *** numerical results were compared with experimental *** experimental values for cooling rates and effective partition coefficient were adopted during *** results of microsegregation through phase-field model show excellent agreement with the experimental *** excellent agreement is because cooling rates,effective partition coefficient and back-diffusion of solute are considered in the *** solidification speed,the calculation results show good agreement with the experimental *** dendritic arm spacing calculated with phase-field model is compared with experimental *** results show good agreement between *** dendrite arm spacing varies with position because high cooling rates are responsible for the refinement effect on ***,two-dimensional simulation produced a dendrite that is similar to that found in the experiment.

关键词： hypoeutectic Al−Cu alloy effective partition coefficient dendritic arm spacing microsegregation phase-field model

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Socioeconomic Indicator of Water Availability in the Lower Guayalejo-TamesíRiver Basin

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Journal of Geoscience and Environment Protection 2017年第6期5卷 47-62页

作者： Lidia rangel-Blanco Faculty of Law and Social Sciences Autonomous University of Tamaulipas Ciudad Victoria México

Water is the main element for development since it defines and limits the opportunities for growth and economic development. The lack of water will increase constantly owing to the increase of the economic activities, social requests, environmental damage, and the climate changes. The research has as purpose to build an indicator of water availability, in the lower Basin of Guayalejo-Tamesi River in Tamaulipas, Mexico. Considering a quantitative methodology that provides the application of mathematic models through a hydrologic simulation software and scenarios of climate change (WEAP) (MA-GICC);and the qualitative that represents a major economic engineering challenge to convert complex variables such as the human development, the rise of the economic activity, and the increase of the social-demographic in water requirement. Bearing in mind that the valley is one of the most important hydrological systems of the State of Tamaulipas that provides to productive areas;the chemical industry, petrochemical, energetic, agricultural and livestock such as the domestic. Which makes relevant to apply and analyze the IDA, being a new experience at the regional level that needs to be abroad in a general way by the binding instances to the development of these areas which will allow a better social usage and economic of the hydrological system in a sustainable integral environment.

关键词： Water Availability Binding Indicator Sustainability