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NiO-CaO materials as promising catalysts for hydrogen production through carbon dioxide capture and subsequent dry methane reforming

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Journal of Energy Chemistry 2017年第5期26卷 942-947页

作者： Alejandra Cruz-Hernández J.Arturo mendoza-Nieto Heriberto Pfeiffer Laboratorio de Fisicoquímica y Reactividad de Superficies(LaFReS) Instituto de Investigaciones en MaterialesUniversidad Nacional Autónoma de MéxicoCircuito exterior s/nCiudad UniversitariaDel.CoyoacánCP 04510Ciudad de MéxicoMexico

In this work, CaO-NiO mixed oxide powders were evaluated as consecutive CO;chemisorbents and catalytic materials for hydrogen production thought the CH;reforming process. Between the NiO impregnated CaO and CaO-NiO mechanical composite, the first one presented better chemical behaviors during the CO;capture and CH;reforming processes, obtaining syngas（H;+ CO） as final product. Results showed that syngas was produced at two different temperature ranges, between 400 and 600 °C and at T > 800 °C, where the first temperature range corresponds to the CH;reforming process but the second temperature range was attributed to a different catalytic reaction process: CH;partial oxidation. These results were confirmed through different isothermal and cyclic experiments as well as by XRD analysis of the final catalytic products, where the nickel reduction was evidenced. Moreover, when a CO-O;flow was used during the carbonation process a triple process was achieved:（i） CO oxidation,（ii） CO;chemisorption and（iii） CH;reforming. Using this gas flow the hydrogen production was always higher than that obtained with CO;.

关键词： Methane reforming CO2 capture Calcium oxide H2 production NiO supported

Stathmin as a surrogate marker of phosphatidylinositol-3-kinase pathway activity:Towards precision medicine in HPV-negative head&neck squamous cell carcinoma

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Genes & Diseases 2022年第3期9卷 820-825页

作者： Andrew T.Turk Dario Garcia-Carracedok David T.Kent Elizabeth Philipone juana Maria Garcia-Pedrero Salvatore M.Caruana Lanny G.Close Gloria H.Su Department of Pathology and Cell Biology and Columbia UniversityNew YorkNY 10032USA Department of Otolaryngology Columbia UniversityNew YorkNY 10032USA Department of Otolaryngology Vanderbilt UniversityNashvilleTN 37232USA Department of Otolaryngology Hospital Universitario Central de Asturias and Instituto Universitario de Oncologia Del Principado de AsturiasOviedo 33006Spain

In order to assess Stathmin as an immunohistochemical(IHC)indicator of phosphatidylinositol 3-kinase(PI3K)pathway activity in HPV-negative head&neck squamous cell carcinoma(HNSCC),we compared Stathmin IHC to expression of other pathway *** also evaluated the relationship between Stathmin IHC and the mutational status of four key pathway ***,we ascertained whether Stathmin IHC correlates with tumor grade or primary *** exists between high Stathmin expression and high pAKT1 expression,indicating a role for Stathmin IHC as a marker of pathway *** analysis did not show correlation between Stathmin IHC and mutation of the four genes *** also observed an association between high Stathmin expression and oropharyngeal primary *** results suggest utility of Stathmin IHC as an indicator of PI3K pathway activity,and thereby demonstrate potential relevance of Stathmin IHC in the context,of HNSCC.

关键词： Cancer Head&neck squamous cell carcinoma Pathology Stathmin

The Effect of Brain Gym on Global Cognitive Function of Institutionalized Older People

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International Journal of Mental Health Promotion 2022年第3期24卷 375-383页

作者： Araceli Cano-Estrada Araceli Jimenez-mendoza Denny Contreras-Guerrero Mario Hernandes-Alejandro Andres Salas-Casas Escuela Superior de Tlahuelilpan Universidad Autónoma del Estado de HidalgoTlahuelilpanHidalgoMéxico Escuela Nacional de Enfermería y Obstetricia.Universidad Nacional Autónoma de México Mexico CityMéxico Departomento de Bioingenieria Unidad Profesional Interdisciplinaria de Biotecnología del Instituto Politecnico Nacional(UPIBIIPN)Mexico CityMexico Instituto de Ciencias de la Salud.Universidad Autónoma del Estado de Hidalgo.Pachuca Hidalgo.México.Scuela Superior de TlahuelilpanUniversidad Autónoma del Estado de HidalgoTlahuelilpanHidalgoMéxico

Cognitive function of older adults is influenced by several factors such as age,sex,education,and physical activity so that it can impact the decrease in progressive cognitive *** is necessary to implement cognitive training in old people’s care to prevent or delay the onset of age-related cognitive *** gym is a series of simple motion exercises and is an alternative therapy that stimulates the *** study aims to evaluate the effect of brain gym as a cognitive training intervention on global cognitive functioning of institutionalized older *** study is a non-randomized quasi-experimental one using pre-and post-test control group *** participants of the study were 65 years old or older who had been part of gerontological centers from a local *** were divided into two groups:control and intervention,each one with 15 ***-Mental State Examination was applied to the sample before and after the cognitive *** brain gym training consists of bi-weekly group meeting for 12 weeks,lasting 50 min *** treated group had a significantly better global cognitive ***(memory),orientation and language skills were the domains with the most significant changes(p<0.05).On the other hand,no significant changes were found in the participants of control groups during post *** results suggest that cognitive training based in brain gym improves global cognitive function of institutionalized older people lease type your abstract *** of a research paper is typically 200 to 400 words in length,and 150 to 300 words for a review *** shall be running continuously(not structured)and shall not include reference *** that appear only once in the abstract should be defined in *** abbreviations appear more than once,the full definitions should be provided first before they can be used elsewhere.

关键词： Cognitive function brain gymnastic older people gerontological center physical activity

Insects as alternative feed for ruminants:comparison of protein evaluation methods

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Journal of Animal Science and Biotechnology 2022年第4期13卷 1143-1150页

作者： Pablo G.Toral Gonzalo Hervás Mariana Gabriela González-Rosales Alejandro G.mendoza Lizbeth E.Robles-Jiménez Pilar Frutos Instituto de Ganadería de Montaña(CSIC-University of León) Finca Marzanas s/n24346 GrullerosLeónSpain Facultad de Medicina Veterinaria y Zootecnia Universidad Autónoma del Estado de MéxicoNo.100 Instituto Literario 100Col.Centro50000 TolucaEstado de MéxicoMexico.

Background:The high dependence of intensive ruminant production on soybean meal and the environmental impact of this crop encourage the search for alternative protein-rich *** use of insects seems promising,but the extent of their ruminal protein degradation is largely *** parameter has major influence not only on N utilization efficiency but also on the environmental burden of ruminant *** addition,although assessing ruminal N degradation represents a key first step to examine the potential of new feeds,it is a challenging task due to the lack of a reference *** study was conducted to investigate the potential of 4 insects(Tenebrio molitor,Zophobas morio,Alphitobius diaperinus and Acheta domesticus)as alternative protein sources for ruminants,using 3 methodologies:1)a regression technique based on the in vitro relationship between gas production and ammonia-N concentration;2)a conventional in vitro technique of batch cultures of ruminal microorganisms,based on filtering the incubation residue through sintered glass crucibles;and 3)the in situ nylon bag *** in vitro intestinal digestibility of the non-degraded protein in the rumen was also *** meal was used as a reference ***:Comparison of evaluation methods(regression,in vitro and in situ)did not allow to reliably select a single value of ruminal N degradation for the studied substrates,but all techniques seem to establish a similar ranking,with good correlations between methods,particularly between regression and in situ *** of the methodology,nitrogen from the 4 insects(with contents ranging from 81 to 112 g/kg of dry matter)did not show high ruminal degradation(41–76%),this value being always lower than that of soybean ***,the in vitro intestinal digestibility of non-degraded N was relatively high in all feeds(≥64%).Conclusion:Overall,these results support the potential of the 4 studied insects as alternative feedstu

关键词： In situ In vitro Livestock Nitrogen degradation Sheep

Pacman Renormalization in Siegel Parameters of Bounded Type

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Advances in Pure Mathematics 2023年第10期13卷 674-693页

作者： Carlos Antonio Marin-mendoza Rogelio Valdez-delgado Centro de Investigación en Ciencias Instituto de Investigación en Ciencias Básicas y Aplicadas Universidad Autónoma del Estado de Morelos Cuernavaca Mexico

A novel method of renormalization called Pacman renormalization allows us to study (unicritical) Siegel functions through Pacman-type functions. It has been used to investigate the Siegel parameters with combinatorially periodic rotation number in the main cardioid of the Mandelbrot set. It is already known that it can be defined a Pacman renormalization operator such that for Siegel pacmen, with combinatorially periodic rotation numbers, the operator is compact, analytic and has a unique fixed point, at which it is hyperbolic with one-dimensional unstable manifold. In this paper we observe that this Pacman renormalization operator is compact and analytic at any Siegel Pacman or Siegel map with combinatorially bounded rotation number. This allows us to define a renormalization operator on the hybrid classes of the standard Siegel pacmen to which we built its horseshoe where the operator is topologically semiconjugated to the left shift on the space of bi-infinite sequences of natural numbers bounded by some constant.

关键词： Siegel Parameters Pacman Renormalization Bounded Type Continued Fraction

Mercury levels in human population from a mining district in Western Colombia

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Journal of Environmental Sciences 2018年第6期30卷 83-90页

作者： Harry Gutiérrez-Mosquera S.B.Sujitha M.P.Jonathan S.K.Sarkar Fairy Medina-Mosquera Helcias Ayala-Mosquera Gladis Morales-Mira Laura Arreola-mendoza Facultad de Ingenieria Universidad Tecnologica del Choco Carrera 22 No.18B-10 Quibdo Colombia Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD) Instituto Politecnico Nacional (IPN) Calle 30 de junio de 1520 Barrio la Laguna Ticomdn Del. Gustavo A. Madero C.P.07340 Ciudad de Mexico Mexico Department of Marine Science University of Calcutta 35 Ballygunge Circular Road Calcutta 700 019 India Instituto de Investigaciones Ambientales del Pacifico (IIAP) Carrera 6 No. 37-39 quibdo Colombia Facultad de Ingenieria Uniuersidad de Medellin Carrera 87 No. 30-65 Medellin Colombia

A biomonitoring study was carried out to examine the adverse impacts of total mercury in the blood（HgB）, urine（Hg U） and human scalp hair（HgH） on the residents of a mining district in Colombia. Representative biological samples（scalp hair, urine and blood） were collected from volunteered participants（n = 63） to estimate the exposure levels of THg using a Direct mercury analyzer. The geometric mean of THg concentrations in the hair,urine and blood of males were 15.98 μg/g, 23.89 μg/L and 11.29 μg/L respectively, whereas the females presented values of 8.55 μg/g, 5.37 μg/L and 8.80 μg/L. Chronic urinary Hg（HgU）levels observed in male workers（32.53 μg/L） are attributed to their long termed exposures to inorganic and metallic mercury from gold panning activities. On an average, the levels of THg are increasing from blood（10.05 μg/L） to hair（12.27 μg/g） to urine（14.63 μg/L）.Significant positive correlation was found between hair and blood urinary levels in both male and female individuals. Thus the present biomonitoring investigation to evaluate the Hg levels and associated health issues would positively form a framework for further developmental plans and policies in building an ecofriendly ecosystem.

关键词： Humans Mercury Gold panning Biomarkers Toxicity Colombia

Risk Factors for Preeclampsia:Results from a Cohort of Over 5000 Pregnancies in Spain

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Maternal-Fetal Medicine 2021年第2期3卷 100-106页

作者： Diana Cuenca Valeria Rolle Katy de Paco Matallana Nuria Valiño Rocio Revello Begoña Adiego Manel mendoza Belen Santacruz Maria del Mar Gil Department of Obstetrics and Gynecology Hospital Universitario de TorrejonTorrejon de ArdozMadrid 28850Spain Bioestatistics and Epidemiology Platform at Fundacion para la Investigacion e Innovacion Biosanitaria del Principado de Asturias Oviedo 33011Spain Department of Obstetrics and Gynecology Hospital Clínico Universitario“Virgen de la Arrixaca”El PalmarInstitute for Biomedical Research of MurciaIMIB-ArrixacaEl PalmarMurcia 30120Spain Department of Obstetrics and Gynecology Complejo Hospitalario Universitario A CorunaA CorunaGalicia 15006Spain Department of Obstetrics and Gynecology Hospital Universitario QuironPozuelo de AlarconMadrid 28223Spain Department of Obstetrics and Gynecology Hospital Universitario Fundacion e AlcorconAlcorconMadrid 28922Spain Department of Obstetrics and Gynecology Hospital Universitario Vall d’HebronBarcelona 08035Spain School of Medicine Universidad Francisco de VitoriaPozuelo de AlarconMadrid 28223Spain

Objective:To determine the incidence of preeclampsia(PE)and preterm PE in Spain and to identify the risk factors for developing the ***:This is a multicenter prospective cohort study performed at six maternity units across *** with singleton pregnancies attending their first-trimester routine visit at the hospital were offered *** and pregnancy characteristics,including mean arterial pressure,as well as ultrasound findings were *** and multivariate logistic regression analyses were performed to identify independent risk factors for subsequent development of ***:A total of 5868 pregnancies were recruited for this study,including 174(3.0%)cases of PE,47(0.8%)cases of preterm PE and 127(2.2%)cases of term *** maternal age was 33.9 years(interquartile range:30.1 to 36.9)and median gestational age at the routine visit was 12.7 weeks(interquartile range:12.3 to 13.0).However,293(5.0%)of the women were on aspirin treatment during pregnancy,likely reducing the true incidence of the *** expected,increasing body mass index(Pdelivery before term due to its *** of PE by risk factors alone is only able to detect about 40%of total PE at 10%screen-positive rate.

关键词： Pre-eclampsia Aspirin Risk factors Screening

Sea Level Variation at Western Coast of Mexican Pacific in Response to Tsunamigenic Earthquakes （2012-2015）

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Journal of Shipping and Ocean Engineering 2015年第6期5卷 318-326页

作者： Rom~in Rodolfo Vera-mendoza Modesto Ortiz-Figueroa Centro de Alerta de Tsunamis Secretaria de Marina Av. Heroica Escuela Naval Militar No. 861. Col. Los Cipreses Del.Coyoacfn D.F. 04830 Mexico Centro de Investigaei6n Cientifica y Educaci6n Superior de Ensenada (CICESE) Km 107 Carretera Touana-Ensenada EnsenadaBaja California 22860 Mexico

Tsunamis in Mexico are a real threat, still unknown to many, mainly by people living in or visiting the coast. The Tsunami Warning Center in Mexico recently created （September 19, 2011） monitors earthquakes and sea level change caused by these same. Sea level on the west coast of the Mexican Pacific was analyzed after the occurrence of local, regional and distant earthquakes, in order to determine the existence of an anomaly due to the quake itself. Variations in sea level due to local registered earthquakes Mw 6.0 to 7.4 range was from 0.10 to 0.30 m; for regional earthquakes of Mw 7.3 and 8.2 were 0.12 and 0.22 m respectively and to the distant earthquake of Mw 8.0 recorded in Solomon Islands, the change in sea level of the maximum recorded was 0.20 m in Manzanillo, Colima. It is important to know that earthquakes whether local, regional or distant whose magnitudes are in the range specified here, did not present a risk to the Mexican coast, but do not rely, having to monitor variations in sea level that earthquakes can produce and be aware that you may perhaps occur as a tsunami in Indonesia in 2004 or Japan in 2011.

关键词： Sea level Mexican Pacific tsunamis earthquakes.

University Corporate Governance in the Literature From 2019 to 2024

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Journalism and Mass Communication 2024年第3期14卷 179-188页

作者： María del Rosario Molina González María Teresa Gaxiola Sánchez María de Jesús Camargo Pacheco Marco Antonio Velderrain Rodríguez Rafael Campoy mendoza Cruz García Lirios Universidad de Sonora NavojoaMexico

Anti-pandemic policies impacted the governance of Higher Education Institutions(HEIs)through confinement and distancing *** an impact was observed in the identity,reputation,and image of the HEI in the face of the health *** objective of this work was to establish an empirical contrast between the theoretical structure consulted regarding the evaluations of summaries published from 2019 to 2024 by judges.A documentary,cross-sectional,and retrospective study was carried out with a sample of sources indexed in international *** results demonstrate that image and age regulate the impact of identity and income on *** relation to the state of the art,it is recommended to extend the study to sociocultural,demographic,economic,and educational variables in order to anticipate the transition from university governance to corporate governance.

关键词： COVID governance model nodes neural networks