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Electrochemical reduction of cr(Ⅵ)in the presence of sodium alginate and its application in water purification

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Journal of Environmental Sciences 2021年第3期33卷 304-312页

作者： Bryan Butter Paola Santander Guadalupe del cPizarro Diego POyarzún Federico Tasca julio Sánchez Facultad de Química y Biología Universidad de Santiago de ChileUSACHCasilla 40Correo 33SantiagoChile Departamento de Química Universidad Tecnológica MetropolitanaJ.P.Alessandri 1242SantiagoChile Laboratorio de nanotecnología Recursos Naturales y Sistemas ComplejosFacultad de Ciencias NaturalesUniversidad de AtacamaCopayapu 485CopiapóChile

chromium(cr)is used in many manufacturing processes,and its release into natural waters is a major environmental problem *** concentrations of cr(Ⅵ)are toxic to human health and living organisms due to the carcinogenic and mutagenic nature of this *** work examined the conversion of cr(Ⅵ)to cr(Ⅲ)via electrochemical reduction using gold electrode in an acidic sodium alginate(SA)solution and subsequent removal of the produced cr(Ⅲ)-SA by the polymer-enhanced ultrafiltration(PEUF)technique.A solution of SA in nitric acid was used both as an electrolytic medium during the voltammetric measurements and bulk electrolysis and as an extracting agent during the PEUF *** electroanalysis of cr(Ⅵ)was performed by linear sweep voltammetry in the presence of acidic SA solution to study its voltammetric behavior as a function of the cr(Ⅵ)concentration,pH,presence of cr(Ⅲ),SA concentration and scan *** addition,the quantitative reduction of cr(Ⅵ)to cr(Ⅲ)was studied through the bulk electrolysis *** results showed efficient reduction with well-defined peaks at approximately 0.3 V ***/Agcl,using a gold working *** the pH increased,the reduction signal strongly decreased until its *** optimum SA concentration was 10 mmol/L,and it was observed that the presence of cr(Ⅲ)did not interfere in the cr(Ⅵ)*** the quantitative reduction by bulk electrolysis in the presence of acidic SA solution,it was possible to reduce all cr(Ⅵ)to cr(Ⅲ)followed by its removal via PEUF.

关键词： Alginate solution chromium Electroanalytical chemistry Ultrafiltration Water purification

clinical usefulness of adherence to gastro-esophageal reflux disease guideline by Spanish gastroenterologists

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World Journal of Gastroenterology 2012年第35期18卷 4885-4891页

作者： Fermín Mearin julio Ponce Marta Ponce Agustín Balboa Miguel A González Javier Zapardiel Service of Gastroenterology Centro Medico Teknon Digestive Disease Unit Hospital Quiron centro de Investigacion Biomedica en Red:Enfermedades Hepaticasy Digestivas Service of Gastroenterology Hospital Universitario La Fe Biostatistics Innovex-Grupo Quintiles Espana Medical Department AstraZeneca Farmaceutica

AIM:To investigate usefulness of adherence to gastroesophageal reflux disease(GERD) guideline established by the Spanish Association of ***:Prospective,observational and multicentre study of 301 patients with typical symptoms of GERD who should be managed in accordance with guidelines and were attended by gastroenterologists in daily ***(aged > 18 years) were eligible for inclusion if they had typical symptoms of GERD(heartburn and/or acid regurgitation) as the major complaint in the presence or absence of accompanying atypical symptoms,such as dyspeptic symptoms and/or supraesophageal *** and therapeutic decisions should be made based on specific recommendations of the Spanish clinical practice guideline for GERD which is a widely disseminated and well known instrument among Spanish in digestive disease ***:Endoscopy was indicated in 123(41%) patients:50 with alarm symptoms,32 with age > 50 years without alarm ***-two patients(58.5%) had esophagitis(grade A,23,grade B,28,grade c,18,grade D,3).In the presence of alarm symptoms,endoscopy was indicated consistently with recommendations in 98% of ***,in the absence of alarm symptoms,endoscopy was indicated in 33% of patients > 50 years(not recommended by the guideline).Adherence for proton pump inhibitors(PPIs) therapy was 80%,but doses prescribed were lower(half) in 5% of cases and higher(double) in 15%.Adherence regarding duration of PPI therapy was 69%;duration was shorter than recommended in 1%(4 wk in esophagitis grades c-D) or longer in 30%(8 wk in esophagitis grades A-B or in patients without endoscopy).Treatment response was higher when PPI doses were consistent with guidelines,although differences were not significant(95% vs 85%).cOncLUSIOn:GERD guideline compliance was quite good although endoscopy was over indicated in patients > 50 years without alarm symptoms;PPIs were prescribed at higher doses and longer duration.

关键词：胃肠病学西班牙语临床实践食管反流典型症状检查结果持续时间

Optimizing urban traffic control using a rational agent

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Journal of Zhejiang University-Science c(computers and Electronics) 2014年第12期15卷 1123-1137页

作者： Salvador IBARRA-MARTínEZ José A.cASTn-ROcHA julio LARIA-MEnchacA Engineering School Autonomous University of Tamaulipas

This paper is devoted to developing and evaluating a set of technologies with the objective of designing a methodology for the implementation of sophisticated traffic lights by means of rational agents. These devices would be capable of optimizing the behavior of a junction with multiple traffic signals, reaching a higher level of autonomy without losing reliability, accuracy, or efficiency in the offered services. In particular, each rational agent in a traffic signal will be able to analyze the requirements and constraints of the road, in order to know its level of demand. With such information, the rational agent will adapt its light cycles with the view of accomplishing more fluid traffic patterns and minimizing the pollutant environmental emissions produced by vehicles while they are stopped at a red light, through using a case-based reasoning(cBR) adaptation. This paper also integrates a microscopic simulator developed to run a set of tests in order to compare the presented methodology with traditional traffic control methods. Two study cases are shown to demonstrate the efficiency of the introduced approach, increasing vehicular mobility and reducing harmful activity for the environment. For instance, in the first scenario, taking into account the studied traffic volumes, our approach increases mobility by 23% and reduces emissions by 35%. When the roads are managed by sophisticated traffic lights, a better level of service and considerable environmental benefits are achieved, demonstrating the utility of the presented approach.

关键词： Rational agents Traffic light control Optimization Traffic mobility

Erratum to:Aqueous extracts from Tenebrio molitor larval and pupal stages inhibit early hepatocarcinogenesis in vivo

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第4期24卷 371-372页

作者： Dulce María Moreno-García Armando Zepeda-Bastida Juan Ocampo-López Brisa Rodope Alarcón-Sánchez Osiris Germán Idelfonso-García Sandra Rosas-Madrigal Diana Ivette Aparicio-Bautista julio Isael Pérez-carreón Saúl Villa-Treviño Jaime Arellanes-Robledo Laboratory of Liver Diseases National Institute of Genomic Medicine-INMEGENCDMX14610Mexico Institute of Agricultural Sciences Autonomous University of Hidalgo State-ICAP-UAEHHidalgo43600Mexico Department of cell Biology Center for Research and Advanced Studies of the National Polytechnic Institute-CINVESTAV-IPNCDMX07360Mexico Laboratory of cardiovascular Diseases National Institute of Genomic Medicine-INMEGENCDMX14610Mexico Proteomics Unit National Institute of Genomic Medicine-INMEGENCDMX14610Mexico Directorate of cátedras National Council of Science and Technology-CONACYTCDMX03940Mexico

Following an Assessment by the Autonomous University of Hidalgo State and the national Institute of Genomic Medicine,this erratum corrects the authorship of this article by adding Dulce Maria MOREnO-GARciA as the first *** published article(Zepeda-Bastida et al.,2021)has now been updated with the corrected authorship,author contributions,and acknowledgments,which may be seen in this erratum.

关键词： larval adding corrected

Growth plasticity of conifers did not avoid declining resilience to soil and atmospheric droughts during the 20th century

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Forest Ecosystems 2023年第2期10卷 238-251页

作者： Tong Zheng Jordi Martínez-Vilalta Raúl García-Valdés Antonio Gazol J.julio camarero changcheng Mu Maurizio Mencuccini northeast Forestry University Harbin150040China cREAF E08193 Bellaterra(Cerdanyola del Vallès)CataloniaSpain Universitat Autònoma de Barcelona E08193 Bellaterra(Cerdanyola del Vallès)CataloniaSpain centre de ciència i Tecnologia Forestal de catalunya(cTFc) E-25280SolsonaSpain Department of Biology GeologyPhysics and Inorganic ChemistryRey Juan Carlos University28933MóstolesMadridSpain Instituto Pirenaico de Ecologia(IPE-cSIc) Zaragoza50059Spain IcREA 08010BarcelonaSpain

Background:Plasticity in response to environmental drivers can help trees cope with ***,our understanding of the importance of plasticity and physiological adjustments in trees under global change is ***:We used the International Tree-Ring Data Bank(ITRDB)to examine 20th century growth responses in conifer trees during(resistance)and following(resilience)years of severe soil and atmospheric droughts occurring in isolation or as compound *** resilience indices were calculated using observed growth divided by expected growth to avoid spurious correlations,in which the expected values were obtained by the autoregressive moving average(ARIMA)*** used high atmospheric vapour pressure deficit(VPD)to select years of atmospheric drought and low annual values of the Standardized Precipitation-Evapotranspiration Index(SPEI)to select years with soil *** acquired the sensitivities(i.e.,the slopes of the relationships)by fitting the resilience indices as a function of environmental drivers,and assessed how these sensitivities changed over time for different types of drought events using linear mixed *** also checked whether plasticity in growth responses was sufficient to prevent long-term trends of growth reductions during or after severe *** acknowledge that by focusing on the response of surviving trees from the ITRDB we are potentially biasing our results towards higher resilience,as stand level responses(e.g.,mortality)may result in lowered competition after the disturbance ***:Sensitivities of resilience to VPD and SPEI changed throughout the 20th century,with the directions of these changes often reversing in the second half of the *** the 1961–2010 period,changing sensitivities had positive effects on resilience,especially following years of high-VPD and compound events,avoiding growth losses that would have occurred if sensitivities had remained *** sensitivity changes,resilience

关键词： Tree rings Growth Drought Vapor pressure deficit Plasticity Acclimation

Shape Retrieval Using Fourier Descriptors Applied to Industrial Process

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Journal of computer and communications 2020年第3期8卷 43-52页

作者： julio-Alejandro Romero-González Rosamaría Romero-González Marcela Herrera-navarro Diana-Margarita córdova-Esparza Hugo Jiménez-hernández Faculty of Informatics Autonomous University of Queretaro Queretaro Mexico

nowadays, manufacturing processes are carried out at speeds that they themselves demand and subject to rigorous standards to maintain the quality of materials. An important step to define the quality of products in metalworking is the casting process, which principal focus is seeking control and monitoring of properties of materials. nevertheless, it is not easy due to the high temperatures and gas produced in the vessel. Although some researchers have been attempting to solve these problems, it is difficult to carry out due to hard conditions. This article proposes the analysis of the surface of the liquid metal, that is, the slag on the surface, which is considered as connected spaces characterized by the topology of their discrete surface. These spaces are described through Fast Fourier Transform, associating changes of intensities to the frequency domain and obtaining main features of these frequencies, these features are used to define an enveloping shape that represents the liquid metal. Finally, the results obtained are presented, which, according to them shows that it is possible to characterize the slag, and by which it is possible to spatially locate the molten metal liquid in the refractory. Therefore, this research serves as the basis for the development of new algorithms for level detection and measurement, preventing overflows and damage to refractories.

关键词： convex Hull Shape Retrieval Features Detection Fourier Transform Vision computing

A T follicular helper cell origin for T regulatory type 1 cells

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cellular & Molecular Immunology 2023年第5期20卷 489-511页

作者： Patricia Solé Jun Yamanouchi Josep Garnica Muhammad Myn Uddin Robert clarke Joel Moro nahir Garabatos Shari Thiessen Mireia Ortega Santiswarup Singha Debajyoti Mondal césar Fandos julio Saez-Rodriguez Yang Yang Pau Serra Pere Santamaria Institut D'investigacions Biomediques August Pi i Sunyer BarcelonaSpain Department of Microbiology Immunology and Infectious DiseasesSnyder Institute for Chronic DiseasesCumming School of MedicineUniversity of CalgaryCalgaryABCanada Institute of computational Biomedicine Faculty of MedicineHeidelberg University HeidelbergGermany Department of Biochemistry and Molecular Biology Cumming School of MedicineUniversity of CalgaryCalgaryABCanada.

chronic antigenic stimulation can trigger the differentiation of antigen-experienced cD4+T cells into T regulatory type 1(TR1)cells,a subset of interleukin-10-producing Treg cells that do not express *** identities of the progenitor(s)and transcriptional regulators of this T-cell subset remain ***,we show that the peptide-major histocompatibility complex class Il(pMHcll)monospecific immunoregulatory T-cell pools that arise in vivo in different genetic backgrounds in response to pMHcll-coated nanoparticles(pMHcll-nPs)are invariably comprised of oligoclonal subpools of T follicular helper(TFH)and TR1 cells with a nearly identical clonotypic composition but different functional properties and transcription factor expression *** analyses of scRnAseq data and multidimensional mass cytometry revealed progressive downregulation and upregulation of TFH and TR1 markers,***,pMHcIl-nPs trigger cognate TR1 cell formation in TFH cell-transfused immunodeficient hosts,and T-cell-specific deletion of Bcl6 or Irf4 blunts both the TFH expansion and TR1 formation induced by *** contrast,deletion of Prdm1 selectively abrogates the TFH-to-TR1 ***6 and Prdm1 are also necessary for anti-cD3 mAbinduced TR1 ***,TFH cells can differentiate into TR1 cells in vivo,and BLIMP1 is a gatekeeper of this cellular reprogramming event.

关键词： T-regulatory type 1(TR1)cells autoimmunity T follicular helper(TFH)cells transdifferentiation nanomedicine

Effect of Organo-Modified nanosepiolite on Fire Behaviors and Mechanical Performance of Polypropylene composites

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中国化学:英文版 2015年第2期33卷 285-291页

作者： Junhao Zhang Sergio de Juan Antonio Esteban-cubillo julio Santarén De-Yi Wang Madrid Institute for Advanced Studies of Materials(IMDEA-Materials) C/Eric Kandel2Getafe(Madrid)28906Spain Tolsa S.A.R.&D.Department Carretera de Madrid a Rivas Jarama3528031 MadridSpain

The objective of the study was to investigate the effect of the organo-modified nanosepiolite(OnSep)on improving the fire safety of polypropylene(PP).The composites based on PP,flame retardant master batch(MB-FR,25 wt%PP+50 wt%decabromodiphenyl ether(DBDPE)+25%antimony trioxide(ATO))and OnSep were prepared via melt *** results of the limiting oxygen index(LOI)and vertical burning rating(UL-94)test indicated that PP/40 wt%MB composites had no rating with seriously dripping phenomenon,while the LOI value was only ***,as 4 wt%OnSep was added in PP/40 wt%MB composites,the composites achieved UL94 V-0 rating and the LOI value was *** comparison,PP/50 wt%MB composites could not reach the V-0 rating *** TGA results revealed that the addition of OnSep enhanced the thermal stability of the PP/MB-FR *** cone calorimeter results indicated that the heat release rate,average mass loss rate,smoke production rate and smoke temperature of the PP/40 wt%MB-FR/4 wt%OnSep composites decreased in comparison with those of PP/40 wt%MB-FR ***,the Young modulus and impact strength were also much better improved with the increase of OnSep ***,the synergistic flame retardancy of OnSep in PP/MB-FR matrix significantly containing a halogen based flame retardant(DBDPE)significantly improved the fire safety and mechanical properties of the composites,and allowed to decrease the total amount of brominated fire retardants.

关键词： nanosepiolite polypropylene flame retardancy heat release rate

Determination of gluten immunogenic peptides for the management of the treatment adherence of celiac disease: A systematic review

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World Journal of Gastroenterology 2021年第37期27卷 6306-6321页

作者： Laura coto Irati Mendia carolina Sousa julio césar Bai Angel cebolla Research and Development BiomedalCamas 41900SevilleSpain Human nutrition and Food Science Doctoral Program University of GranadaGranada 18011Spain Molecular Biology Biomedicine and Clinical Research Doctoral ProgramUniversity of SevilleSeville 41012Spain Department of Microbiology and Parasitology University of SevilleSeville 41013Spain Department of Gastroenterology Dr.Carlos Bonorino Udaondo Gastroenterology HospitalBuenos Aires 1264Argentina Research Institutes Universidad del SalvadorBuenos Aires 1050Argentina

BAcKGROUnD Gluten is a complex mixture of proteins with immunogenic peptide sequences triggering the autoimmune activity in patients with celiac disease(ceD).Gluten immunogenic peptides(GIP)are resistant to gastrointestinal digestion and are then excreted via the stool and *** common detection methods applied in the follow-up visits for ceD patients such as serology tests,dietetic interviews,questionnaires,and duodenal biopsy have been proved to be inefficient,invasive,or inaccurate for evaluating gluten-free diet(GFD)*** of excreted GIP in stool and urine has been developed as a non-invasive,direct,and specific test for GFD *** To summarize published literature about the clinical utility of GIP determination in comparison to the tools employed for GFD *** PubMed and Web of Science searches were performed using the keywords“gluten immunogenic peptides”or“gluten immunogenic peptide”and a combination of the previous terms with“feces”,“stools”,“urine”,“celiac disease”,“gluten-free diet”,and“adherence”to identify relevant clinical studies published in English and Spanish between 2012 to January *** lists from the articles were reviewed to identify additional pertinent *** articles and abstracts reporting the clinical use of GIP determination in stool and/or urine for the follow-up of patients with ceD in comparison with other tools in use were *** reports,commentaries,reviews,conference papers,letters,and publications that did not focus on the aims of this review were *** Total of 15 publications were found that involved the use of GIP determination in stool and/or urine to monitor the adherence to the GFD in comparison to other *** included both children and adults diagnosed with ceD and healthy ***,these preliminary studies indicated that this novel technique was highly sensitive for the detection of GFD transgressions and therefore could fac

关键词： celiac disease Gluten-free diet Gluten immunogenic peptides Immunoassays Stool Urine