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Competencies in Computer Security and Resolution of Technological Problems in Higher Education Students

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Journal of Computer and Communications 2024年第4期12卷 171-185页

作者： Esteban Pérez Flores Alejandra Aldrette Malacara Sandra R. Murillo Cano Vittorio zanella Palacios Facultad de Ciencias Administrativas Universidad Aut&#243noma de Baja California Mexicali M&#233xico Decanato de Ingenierí as Universidad Popular Aut&#243noma Del Estado de Puebla Puebla M&#233xico

Starting from the importance of preserving our information and protecting our devices against attacks on their vulnerabilities, this article aims to establish the level of knowledge in computer security and problem-solving of students at a university in northwest Mexico. This research has a quantitative approach where the European Framework of Digital Competencies for Citizenship was used as a reference to identify and establish the level of the competencies that were evaluated. The IKANOS Test was used as a data collection tool. The results show that students know the importance of keeping their devices safe and how valuable the information found on them is. On the other hand, the results also show a considerable percentage of students who do not have the knowledge and are at a basic level of knowledge to solve technical problems with their devices.

关键词： Digital Literacy Cybersecurity DigComp Digital Skills Data Protection

Structure-activity relationship in water-gas shift reaction over gold catalysts supported on Y-doped ceria

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Journal of Rare Earths 2019年第4期37卷 383-392页

作者： Tatyana Tabakova Lyuba Ilieva Ivan Ivanov Maela Manzoli Rodolfo zanella Petya Petrova Zbigniew Kaszkur Institute of Catalysis Bulgarian Academy of Sciences Department of Drug Science and Technology & Centre for Nanostructured Interfaces and Surfaces University of Turin Centro de Ciencias Aplicadas y Desarrollo Tecnologico Universidad Nacional Autonoma de Mexico Institute of Physical Chemistry PAS

The utilization of pure hydrogen as an energy source in fuel cells gave rise to renewed interest in developing active and stable water-gas shift catalysts. Gold catalysts have proven to be very efficient for water-gas shift reaction at low temperature. The aim of the present study was to investigate the effect of:(i) different preparation methods(impregnation and coprecipitation) to obtain a modified ceria support,and(ii) the amount of Y_2 O_3(1.0 wt%, 2.5 wt%, 5.0 wt% and 7.5 wt%) as dopant on the water-gas shift activity of Au/CeO_2 catalysts. An extended characterization by means of S_(BET), XRD, HRTEM/HAADF, FTIR,H_2-TPR and CO-TPR measurements in combination with careful evaluation of the catalyst behavior allowed to shed light on the parameters governing the water-gas shift activity. The catalysts show very high activity(>90% CO conversion) in the temperature range 180-220 ℃,with a slightly better performance of the gold catalysts on supports prepared by impregnation. The decreased activity with increasing Y_2 O_3 concentration is related to the hindering of oxygen mobility due to ordering of surface oxygen vacancies in vicinity of segregated Y^(3+). The effect of catalyst pre-treatments and the stability of the best performing samples were examined as well.

关键词： Gold catalyst Water gas shift reaction Doped ceria Yttrium Hydrogen production Rare earths

Synthesis of palladium-rhodium bimetallic nanoparticles for formic acid dehydrogenation

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Journal of Energy Chemistry 2021年第1期30卷 301-309,I0010页

作者： Ilaria Barlocco Sofia Capelli Elisa zanella Xiaowei Chen Juan JDelgado Alberto Roldan Nikolaos Dimitratos Alberto Villa Dipartimento di Chimica Universitàdegli Studi di MilanoMilan I-20133Italy Departamento de Ciencia de los Materiales Ingeniería Metalúrgica y Química InorgánicaFacultad de CienciasUniversidad de CádizCampus Río San PedroPuerto Real(Cádiz)E-11510Spain School of Chemistry Cardiff UniversityMain BuildingPark PlaceCF103AT CardiffUnited Kingdom Dipartimento di Chimica Industriale e dei Materiali Alma Mater Studiorum Universitàdi BolognaViale Risorgimento 4I-40136 BolognaItaly

Herein,we report for the first time the synthesis of preformed bimetallic Pd-Rh nanoparticles with different Pd:Rh ratios(nominal molar ratio:80-20,60-40,40-60,20-80) and the corresponding Pd and Rh monometallic ones by sol immobilization using polyvinyl alcohol(PVA) as protecting agent and NaBH4 as reducing agent,using carbon nanofibers with high graphitization degree(HHT) as the desired *** synthesized catalysts were characterized by means of Transmission Electron Microscopy(TEM) and inductively coupled plasma optical emission spectroscopy(ICP-OES).TEM shows that the average particle size of the Pd-Rh nanoparticles is the range of 3-4 nm,with the presence of few large agglomerated *** bimetallic catalysts,EDX-STEM analysis of individual nanoparticles demonstrated the presence of random-alloyed nanoparticles even in all cases Rh content is lower than the nominal one(calculated Pd:Rh molar ratio:90-10,69-31,49-51,40-60).The catalytic performance of the Pd-Rh catalysts was evaluated in the liquid phase dehydrogenation of formic acid to *** was found that Pd-Rh molar ratio strongly influences the catalytic ***-rich catalysts were more active than Rh-rich ones,with the highest activity observed for Pd90:Rh10(1792 h^(-1)),whereas Pd69:Rh31(921 h^(-1)) resulted the most stable during recycling ***,Pd90:Rh10 was chosen as a representative sample for the liquid-phase hydrogenation of muconic acid using formic acid as hydrogen donor,showing good yield to adipic acid.

关键词： Palladium Rhodium Alloy Formic acid Hydrogen Muconic acid

Recurrent Clostridium difficile infections:The importance of the intestinal microbiota

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World Journal of Gastroenterology 2014年第23期20卷 7416-7423页

作者： Marie Céline zanella Terrier Martine Louis Simonet Philippe Bichard Jean Louis Frossard Service of General Internal Medicine Geneva University Hospital1211 GenevaSwitzerland Service of Gastroenterology and Hepatology Geneva University Hospital1211 GenevaSwitzerland

Clostridium difficile infections(CDI)are a leading cause of antibiotic-associated and nosocomial *** effective antibiotic treatments,recurrent infections are *** the recent emergence of hypervirulent isolates of ***,CDI is a growing epidemic with higher rates of recurrence,increasing severity and *** microbiota transplantation(FMT)is an alternative treatment for recurrent CDI.A better understanding of intestinal microbiota and its role in CDI has opened the door to this promising therapeutic *** is thought to resolve dysbiosis by restoring gut microbiota diversity thereby breaking the cycle of recurrent *** the first reported use of FMT for recurrent CDI in 1958,systematic reviews of case series and case report have shown its effectiveness with high resolution rates compared to standard antibiotic *** article focuses on current guidelines for CDI treatment,the role of intestinal microbiota in CDI recurrence and current evidence about FMT efficacy,adverse effects and acceptability.

关键词： Clostridium difficile infection Clostridium difficile recurrence Fecal microbiota transplantation Stool transplantation Microbiota

可降解超细晶镁合金在生物医学中的应用(英文)

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稀有金属材料与工程 2014年第11期43卷 2561-2566页

作者：葛强 Ehsan Mostaed Caterina zanella 于振涛 Maurizio Vedani Politecnico di Milano Italy Milan 20156 Universita di Trento Italy Trento 38123 西北有色金属研究院陕西西安710016

通过对工业纯镁以及ZM21合金的性能测试研究了镁合金在可降解生物医学中的应用,讨论了等径角挤压制备超细晶以及温挤压对材料性能的影响。晶粒细化导致合金材料压缩强度明显提高,强烈的初始变形织构导致粗晶镁合金拉伸强度高于压缩。等... 详细信息

通过对工业纯镁以及ZM21合金的性能测试研究了镁合金在可降解生物医学中的应用,讨论了等径角挤压制备超细晶以及温挤压对材料性能的影响。晶粒细化导致合金材料压缩强度明显提高,强烈的初始变形织构导致粗晶镁合金拉伸强度高于压缩。等径角挤压能够减弱织构的影响,使不同合金塑性流变行为获得改变。材料腐蚀性能主要受化学成分、晶粒大小以及先前变形诱导晶格畸变程度的综合影响。等径角挤压细化晶粒、增大晶格缺陷密度在一定程度上制衡了材料的腐蚀性能。同时弥散分布的第二相粒子的增加对于点蚀发展有着积极的作用。

关键词：镁合金 ECAP 超细晶合金塑性各向异性织构腐蚀

Gold-iridium catalysts for the hydrogenation of biomass derived products

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Chinese Journal of Catalysis 2016年第10期37卷 1771-1775页

作者： Lorenzo Landenna Alberto Villa Rodolfo zanella Claudio Evangelisti Laura Prati 米兰大学化学系墨西哥国立自治大学科学应用与技术开发中心意大利国家研究委员会分子科学技术研究所

Au-Ir and Au-Ru on TiOz catalysts prepared by sequential deposition-precipitation technique were compared with the corresponding monometallics in the hydrogenation of levulinic acid to y-valero]actone. Interestingly the addition of Ao to Ir/TiO2 showed a detrimental effect on the activity of Ir monometallic catalyst whereas a positive synergistic effect was shown in the case of Ru. Both catalysts were reduced under H2 to increase the M0-Au0 interaction, From previous DFT calculations and catalytic test, we addressed the lower activity of Au-lr/TiO2 than that of Ir/TiO2 to the interference of Au into the redox mechanism of lr atoms.

关键词： Levulinic acid hydrogenationGold-irdium catalystGold-ruthenium catalysty-ValerolactoneSynergistic effect

Out of Sight, Out of Mind, Right? Not in COVID-19 Shock or Anaerobic and Exhaustive Shock versus Septic Shock Dilemma That Means to Live or Die. Emergency Attention and a Necessity of Trials

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Open Journal of Emergency Medicine 2022年第1期10卷 19-47页

作者： Luiz Gonzaga Francisco de Assis Barros D’Elia zanella Infectious Diseases Department (MI-HSPE) Hospital do Servidor Público do Estado de S&#227 o Paulo S&#227 o Paulo Brazil PhD Program in Allergy and Immunopathology School of Medicine University of S&#227 o Paulo S&#227 o Paulo Brazil Emergency and Urgency Department University Hospital of University of S&#227 o Paulo Butant&#227 S&#227 o Paulo Brazil

Background: COVID-19 brought challenges that did not end after a two-year pandemic. From more straightforward changes in habits to studying to understand the enigmatic parasite-host relationship, we can better manage the patient infected with SARS-CoV-2 even with a vaccine full of doubts and antivirals that do not correctly cover the viral period. SARS-CoV-2 brought the chronic inflammation now called “The Long COVID-19 Syndrome” (LCS), something still little talked about, but we already see deaths due to non-identification of this inflammatory syndrome that can lead to shock. Theory: LCS Shock is due to a long period of metabolic stress, reflecting the shift from inflammation to oxidative stress and innate immunity, and does not respond to antimicrobials, as its main component is inflammatory, although there may be conjoined bacterial translocation. Thus, we are losing patients to a new syndrome confused with sepsis and septic shock. While septic shock (SS) responds to antimicrobials, Inflammatory Shock (ISc) does not respond to antimicrobials alone, requiring high doses of corticosteroids. Review: This study shows that we need to differentiate SS and ISC, as the treatment is different. The review shows that Lactate, LDH and the presence of new/recent cardiac changes and bradycardia in the face of a status where there should be tachycardia as the usual response can differ ISC from SS. Maybe the main responsible for high LDH is Warburg Effect. Conclusion: We have a dilemma that requires clinical studies that routinely match high doses of corticosteroids (until there is something better to be done) and bring laboratory and imaging differences to diagnose SS vs ISc better.

关键词： Acute Respiratory Distress Syndrome Cardiovascular System Critical Care COVID-19 Lactate

Alternative uses for tannery wastes:a review of environmental,sustainability,and science

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Journal of Leather Science and Engineering 2020年第1期2卷 249-268页

作者： Cesar Vinicius Toniciolli Rigueto Marieli Rosseto Daniela Dal Castel Krein Bruna Elisangela Pessini Ostwald Lillian Avila Massuda Barbara Belem zanella Aline Dettmer Postgraduate Program in Food Science and Technology(PPGCTA) University of Passo Fundo(UPF)Faculty of Agronomy and Veterinary Medicine(FAMV)Passo FundoRSBrazil Chemical Engineering Course University of Passo Fundo(UPF)Faculty of Engineering and Architecture(FEAR)Passo FundoRSBrazil

The manufacture of leather covers a wide productive chain and beyond contributes to the economic *** various stages of leather processing result in high volumes of solid *** Brazil,a daily generation of 375 tons of solid waste is estimated,and landfills are still the most used route to its *** this review,emphasis will be given to researches that have sought alternatives for the use of solid waste from the tannery *** the main applications of solid tannery wastes,the following stand out production of adsorbent materials,biodiesel,biogas,biopolymers,applications in agriculture and other applications involving extraction/recovery of compounds of industrial/commercial interest,isolation of microorganisms and production of enzymes and applications in the animal *** each alternative of waste application,the technologies used,the opportunities,and the challenges faced are *** hope that this review can provide valuable information to promote the broad understanding of the possibilities that tannery solid wastes has for the development of biodegradable and agricultural products,wastewater treatment,extraction of compounds of industrial and commercial interest,among others.

关键词： Leather Adsorption Biodiesel Biogas Biopolymers Agriculture

Solution to the Balanced Academic Curriculum Problem Using Tabu Search

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Computer Technology and Application 2012年第9期3卷 630-635页

作者： Lorna V. Rosas-Tellez Jose L. Martinez-Florest Vittorio zanella-Palacios Engineering Department Universidad Popular Autonoma del Estado de Puebla C.P. 72410 Puebla Pue. Mexico Interdisciplinary Center for Postgraduate Studies Research and Consulting Universidad Popular Aut6noma del Estado dePuebla C.P. 72410 Puebla Pue. Mdxico

The Balanced Academic Curriculum Problem （BACP） is a constraint satisfaction problem classified as （Non-deterministic Polynomial-time Hard） NP-Hard. This problem consists in the allocation of courses in the periods that are part of a curriculum such that the prerequisites are satisfied and the load of courses is balanced for the students. This paper presents the solution for a modified BACP where the academic loads and number of curses may be the same or different for each one of the periods and allows having some courses in a specific period. This problem is modeled as an integer programming problem and is proposed the use of Tabu search with short-term memory for its solution because it is not possible to find solutions for all the instances of this modified problem with an exact method.

关键词： Balanced academic curriculum problem (BACP) Tabu search non-deterministic polynomial-time hard (NP-Hard).