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Identification of life habits factors as risk for gastritis and colitis occurrence in a mestizo population of Chabeklumil, Chiapas, México

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Open Journal of Nursing 2012年第2期2卷 67-71页

作者： Diana Cecilia Tapia-Pancardo Ramiro Jesús-Sandoval Myrna Miriam Valera-Mota José Luis Cadena-Anguiano miguel murguía-romero Rafael Villalobos-Molina Carrera de Cirujano Dentista FES Iztacala Universidad Nacional Autónoma de México Tlalnepantla México Carrera de Médico Cirujano FES Iztacala Universidad Nacional Autónoma de México Tlalnepantla México Carrera de Optometría FES Iztacala Universidad Nacional Autónoma de México Tlalnepantla México División de Investigación y Posgrado FES Iztacala Universidad Nacional Autónoma de México Tlalnepantla México

Aim: Gastric diseases are a recent trend in morbidity in México. We aimed to identify most frequent life habits factors as risk for gastritis and colitis occurrence, in a Mexican mestizo population in Chabeklumil, Chiapas. Population: This study was observational, descriptive, transversal and prospective;346 questionnaires were applied to individuals of both genders from 11 years of age, with low income and socio-economic status, after they signed the informed consent. An individual file was created by the nurses in Chabeklumil. The predominant gender in the population was female (56.1%), with a distribution of 166 among adulthood (19 - 59 years of age);among males (43.9%), 133 included adults. Results: We identified the following environmental risk factors to develop gastritis and colitis: long periods of daily fasting > consumption of irritant food and drink > stress, in females;in contrast, males reported alcohol and tobacco consumption > irritant food and drink > long periods of daily fasting > stress. We found statistical differences (P < 0.05) in risk factors between females and males, in drugs and alcohol consumption, fasting, and stress, but not in consumption of irritant foods, nor in colitis and gastritis prevalence. Conclusions: Females are most affected by life habits risk factors for gastritis/colitis, which occurs mainly due to lifestyle and “macho” culture, since women are precluded of a better living standard, they work hard in the field, and start early in the day without consuming a meal, which they eat late in the day once arriving home. People in Chabeklumil eat/drink a lot of irritant food like hot pepper and coffee, which damage the gastrointestinal system leading to gastritis and colitis. Furthermore, men started to consume drugs at early ages, a condition also involved in developing gastritis.

关键词： Gastritis Colitis Life Habits Risk Factors Poverty Mexican Mestizo Population

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The body mass index (BMI) as a public health tool to predict metabolic syndrome

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Open Journal of Preventive Medicine 2012年第1期2卷 59-66页

作者： miguel murguía-romero Rafael Jiménez-Flores Rafael Villalobos-Molina María Isabel Mendoza-Ramos Julia Reyes-Reali Santiago C. Sigrist-Flores Adolfo René Méndez-Cruz Carrera de Médico Cirujano FES Iztacala UNAM Tlalnepantla México

Objective: To analyze the body mass index (BMI) as an indicator of metabolic alterations, including the metabolic syndrome (MetS), at both individual level and public health level. Method: We recruited 3683 undergraduate students (17 - 24 years old) from México City identifying metabolic alterations, including the MetS, and comparing its prevalence by BMI ranges. We applied a sensitivity analysis to define BMI optimal cut-off point values. Results: We found 14.6% of MetS prevalence with a BMI average of 24.2%, and 34.5% of overweight prevalence (BMI ≥ 25). A BMI cut-off point value of 22.5 is suggested as an upper limit of a normal weight condition, only for public health purpose;while at individual level the BMI cut-off point of 25 was corroborated as the upper limit for a normal weight condition. A public health tool to estimate the MetS prevalence based on BMI percentages is proposed, and a study case is presented. Conclusion: BMI fails predicting at individual level both, healthy condition or metabolic alterations, when values are lower than 25. At population level, the BMI is a valuable public health tool to estimate MetS prevalence: based on the prevalence of MetS by BMI ranges of a sample of the population.

关键词： BMI Metabolic Syndrome Obesity Public Health Tool

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Metabolic syndrome occurrence in university students from México City: The binomium HDL/waist circumference is the major prevalence factor

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Open Journal of Preventive Medicine 2012年第2期2卷 177-182页

作者： J. Rafael Jiménez-Flores miguel murguía-romero M. Isabel Mendoza-Ramos Santiago Sigrist-Flores Norma Y. Rodríguez-Soriano Lilia I. Ramírez-García Ramiro Jesús-Sandoval M. Araceli álvarez-Gasca Esther Orozco Rafael Villalobos-Molina A. René Méndez-Cruz Carrera de Médico Cirujano FES Iztacala UNAM Tlalnepantla México Carrera de Psicología FES Iztacala UNAM Tlalnepantla México Posgrado en Ciencias Biológicas FES Iztacala UNAM Tlalnepantla México Unidad de Biomedicina FES Iztacala UNAM Tlalnepantla México Universidad Autónoma de la Ciudad de México Ciudad de México México

Objective: Metabolic Syndrome (MetS) is the leading cause to develop type 2 diabetes worldwide. We examined associations of MetS components early in life, and their use as risk factors of acquiring MetS. Method: We used an international definition of MetS. Subjects were categorized into “Healthy”/“Not Healthy”, altered parameters are low HDL-cholesterol, large waist circumference (WC), hypertriacylglycerolemia, hypertension, and hyperglycemia, in 32 combinations (2^5) with two values (altered/not altered). MetS was identified with three or more altered parameters. Results: A total of 3424 students (ages 17 - 24 years) participated in the survey, and 2475 were “Not Healthy” showing at least 1 parameter altered;from them 49.6% showed low blood HDL either alone or combined, 38.2% had altered waist circumference either alone or combined;while 18.1% showed hypertriacylglycero-lemia either alone or combined. Hypertension and hyperglycemia were the lowest in frequency. Conclusion: We propose that the binomium HDL/ Waist Circumference is the main prevalence factor to develop MetS in the asymptomatic young population, followed by hypertriacylglycerolemia which together define MetS;while hypertension and hyperglycemia seem to occur later in MetS.

关键词： HDL/Waist Circumference Metabolic Syndrome Mexican University Students

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Transformation of leather waste into microwave-activated and N-doped carbon for Li-S batteries

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新型炭材料(中英文) 2025年

作者： Carolina Pano-Azucena Roberto Rosas-Rangel miguel Olvera-Sosa David Salvador González-González Rene Rangel-Mendez Luis Felipe Chazaro-Ruiz miguel Avalos-Borja Javier Antonio Arcibar-Orozco CIATEC.Center for Applied Innovation in Competitive Technologies Tecnologico de Monterrey School of Engineering and Sciences Instituto Potosino de Investigación Científica y Tecnológica Universidad Autónoma de Coahuila Facultad de SistemasCiudad Universitaria

The use of carbon from waste biomass has the potential to buffer the drawbacks of Li-S batteries and improve their overall performance. Chrome-Tanned-LeatherShavings(CTLS) are undesirable wastes, highly available for transformation into porous carbon. Microwave activation is an efficient state-of-the-art procedure to obtain unique porous structures and nitrogen incorporation can improve the performance of porous carbons. This study proposes the transformation of CTLS into a microwave activated porous carbon, and then was modified to introduce nitrogen. A microporous activated carbon with a specific surface area of 556 m2g-1 with honeycomb-like structure was obtained. Both urea thermal decomposition and ethanolamine impregnation improves the nitrogen and amine presence of surface groups. However,the results indicated that only urea treatment was effective in improving the initial capacity of the cell(1363 mAhg-1), which is probably linked with the sorption of long-chain polysulfides. This investigation confirms that it is possible to obtain carbon materials from CTLS, for use as sulfur-host cathodes in Li-S batteries, and improve their performance with urea thermal decomposition. Furthermore, a Radial basis function neural network was fitted to provide statistical support to the experimental results. The trained model corroborated the importance of nitrogen content of the carbons in the discharge capacity of the cells.

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Chlorophyll, anthocyanin, and gas exchange changes assessed by spectroradiometry in Fragaria chiloensis under salt stress

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Journal of Integrative Plant Biology 2014年第5期56卷 505-515页

作者： miguel Garriga Jorge B. Retamales Sebastián romero-Bravo Peter D.S. Caligari Gustavo A. Lobos Faculty of Agricultural Sciences Plant Breeding and Phenomic Center Universidad de Talca Instituto de Biología Vegetaly Biotecnología Universidad de Talca

Chlorophyll and anthocyanin contents provide a valuable indicator of the status of a plant’s physiology, but to be more widely utilized it needs to be assessed easily and non‐destructively. This is particularly evident in terms of assessing and exploiting germplasm for plant‐breeding programs. We report, for the first time, experiments with Fragaria chiloensis（L.）Duch. and the estimation of the effects of response to salinity stress（0, 30, and 60 mmol NaCl/L） in terms of these pigments content and gas exchange. It is shown that both pigments（which interestingly, themselves show a high correlation） give a good indication of stress response. Both pigments can be accurately predicted using spectral reflectance indices（SRI）;however, the accuracy of the predictions was slightly improved using multilinear regression analysis models and genetic algorithm analysis. Specifically for chlorophyll content, unlike other species, the use of published SRI gave better indications ofstress response than Normalized Difference Vegetation *** effect of salt on gas exchange is only evident at the highest concentration and some SRI gave better prediction performance than the known Photochemical Reflectance Index. This information will therefore be useful for identifying tolerant genotypes to salt stress for incorporation in breeding programs.

关键词： Gas exchange high‐throughput phenotyping pigment phenomic photosynthesis reflectance spectral reflectance indices

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How to express tumours using membrane systems

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Progress in Natural Science:Materials International 2007年第4期17卷 449-457页

作者： miguel A. Gutiérrez-Naranjo Mario J. Pérez-Jiménez Agustín Riscos-Núez Francisco J. romero-Campero Department of Computer Science and Artificial Intelligence University of Seville Avda. Reina Mercedes s/n41012SevillaSpain

In this paper we discuss the potential usefulness of membrane systems as tools for modelling tumours. The approach is followed both from a macroscopic and a microscopic point of view. In the first case, one considers the tumour as a growing mass of cells, focusing on its external shape. In the second case, one descends to the microscopic level, studying molecular signalling pathways that are crucial to determine if a cell is cancerous or not. In each of these approaches we work with appropriate variants of membrane systems.

关键词： tumour membrane system modeling.

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European legal framework related to underground mining and tunnelling concerning commission directive (EU) 2017/164, 31 January establishing a fourth list of indicative occupational exposure limit values

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International Journal of Mining Science and Technology 2020年第4期30卷 541-545页

作者： miguel Tato Diogo Department of Mining Engineering Faculty of EngineeringUniversity of PortoPorto 4200-465Portugal

Directive(EU)2017/164 establishes a fourth list of indicative occupational exposure limit values(IOELVs)to protect workers from risks of exposure to hazardous *** states that in underground mining and tunnelling,Member States may benefit from a transitional period regarding IOELVs for nitrogen monoxide,nitrogen dioxide,and carbon monoxide,during which the existing established IOELVs may be *** European Advisory Committee on Health and Safety at Work questions the technical feasibility of the proposed IOELVs in underground mining(CO,NO and NO2)and tunnelling(NO and NO2).Challenges arise concerning the availability of measurement methodologies for compliance with proposed IOELVs(NO2)in underground mining and tunnelling environments.

关键词： Nitrogen monoxide Nitrogen dioxide Carbon monoxide IOELVs European Directive 2017/164 Underground mining Tunnelling

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Piling up multidecker pyrgos[n]cages as antibacterial materials

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Science China Materials 2025年第1期 314-316页

作者： miguel A.Liuzzi-Vaamonde Jackson B.Lancaster Samantha A.Mason Yuanning Feng Department of Chemistry and Biochemistry The University of Oklahoma

The development of antibiotics is regarded as one of the most significant scientific advances in modern medicine. Before the commercialization of antibiotics, infectious diseases were catastrophic throughout history [1]. Penicillin was used to treat serious infections in the 1940s, but unfortunately, with the introduction of antibiotics came the emergence of antibiotic resistance [2,3]. Evolved and adapted methicillin-resistant Staphylococcus aureus (MRSA) strains are presently impacting community and healthcare systems across the globe [4].

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Enhancement of a foaming formulation with a zwitterionic surfactant for gas mobility control in harsh reservoir conditions

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Petroleum Science 2021年第5期18卷 1409-1426页

作者： miguel Angel Roncoroni Pedro romero Jesús Montes Guido Bascialla Rosario Rodríguez Ramón Rodríguez Pons-Esparver Luis Felipe Mazadiego María Flor García-Mayoral Universidad Politécnica de Madrid MadridSpain CEPSA Research Center MadridSpain CEPSA E&P MadridSpain

This work presents the design of a robust foam formulation that tolerates harsh reservoir conditions(high salinity,high divalent ion concentration,high temperature,light oil,and hydrocarbon injection gas)in a sandstone *** this,we selected anionic Alpha Olefin Sulfonate(AOS)surfactants and studied their synergistic effects in mixtures with zwitterionic betaines to enhance foam *** laboratory workflow used to define the best formulation followed a de-risking approach in three consecutive ***,(phase 1)the main surfactant(AOS)was selected among a series of commercial candidates in static ***,(phase 2)the betaine booster to be combined with the previously selected AOS was chosen and their ratio optimized in static ***,(phase 3)the surfactant/booster ratio was optimized under dynamic conditions in a porous medium in the absence and the presence of *** a result of this study,a mixture of an AOS C14-C16 and cocamidopropyl hydroxysultaine(CAPHS)was selected as the one having the best *** designed formulation was proven to be robust in a wide range of *** generated a strong and stable foam at reservoir conditions,overcoming variations in salinity and foam quality,and tolerated the presence of oil.

关键词： Gas mobility control Foam enhanced oil recovery(EOR) Foam stability High temperature high salinity reservoir Surfactant formulation

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Cities and Methods from Complexity Science

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Journal of Systems Science & Complexity 2016年第5期29卷 1177-1186页

作者： BALMACEDA Beatriz FUENTES miguel CIDES Corpotraining Av. Providencia 2370 Santiago Chile Santa Fe Institute 1399 Hyde Park Road Santa Fe New Mexico 87501 USA IIF-Sadaf/CONICET Bulnes 642 Buenos Aires 1176 Argentina Facultad de Ingenieria y Tecnologla Universidad San Sebastidn Lota 2465 Santiago 7510157 Chile

The dynamics of human society is now been studying in the context of the artificial environment created by cities. In this work, the authors describe some of the formal methods used in complexity science to study urban systems. The authors discuss some of the important quantitative approaches on cities paying attention to some of the deepest controversies in present scientific *** authors will stress the importance of a transdisciplinary approach when studying this type of cooperative social environments.

关键词： Cities complexity environment.

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