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“A cultura está relacionada diretamente à geração do conhecimento e ao exercício do pensamento, que são valores essenciais para o desenvolvimento da sociedade. Assim, a cultura é importante na formação pessoal, moral e intelectual do indivíduo e no desenvolvimento da sua capacidade de relacionar-se com o próximo” (Brasil Parelo, 2023). A cultura juntamente com a arte são importantes na sociedade, visto a influência no nosso desenvolvimento como pessoa e nosso modo de vida em sociedade. “De fato, a arte tem um papel fundamental em todas as fases da vida do ser humano. Quanto mais cedo o indivíduo tem contato com as artes, mais ele pode desenvolver seus talentos em determinado recurso” (Angher, 2023). A Arte traz movimento, a dinâmica que se transforma com o tempo. A transformação faz as pessoas participarem da experiência de viver a arte. Nesse cenário, a Cultura abrange todas as transformações e une o conjunto em patrimônio social, histórico e cultural. A obra apresenta trabalhos com a temática Artes e Cultura: Diferentes Cenários, a interação do indíviduo com as Artes, Cultura, a tecnologia, relacionada com o desenvolvimento econômico, cultural, educacional e outros segmentos fundamentais para a vida. Traz ainda, reflexões para Professores, cientistas, pesquisadores, estudantes e a própria comunidade, pensando em diferentes formas de transformar e melhorar a nação.

Being able to understand a written text is an essential life skill, as is solving a problem, which configures a bidirectional relationship between both skills. With regard to reading comprehension, at least three specific levels are required to achieve a full understanding of a text: literal, inferential, and critical. For its part, mathematics has changed substantially in recent decades, prioritizing problem-solving as the central axis of the teaching process as it constitutes a resource for learning. This study connects both skills and aims to design and validate a mathematical problem-solving test contextualized to the quadratic function, to assess the level of reading comprehension of secondary school students. The study is nonexperimental, cross-sectional, and focused on psychometric aspects since it aims to validate a measurement instrument. It was applied on a pilot basis to three municipal secondary education courses in Chile. The content, construct, discrimination, and reliability validation tests carried out allowed us to demonstrate that the problem-solving test contextualized to the quadratic function is a reliable instrument to produce knowledge in educational research.

Sexual behavior is fundamental for the survival of mammalian species and thus supported by dedicated neural substrates. The ventrolateral part of ventromedial hypothalamus (VMHvl) is an essential locus for controlling female sexual behaviors, but recent studies revealed the molecular complexity and functional heterogeneity of VMHvl cells. Here, we identify the cholecystokinin A receptor (Cckar)-expressing cells in the lateral VMHvl (VMHvll

To identify the etiology of peripheral eosinophilia in a large pediatric population and to develop a diagnostic algorithm to help guide diagnosis and management of peripheral eosinophilia in the outpatient pediatric population.We performed a retrospective chart review of children presenting to Texas Children's Hospital in Houston with peripheral eosinophilia between January 1, 2011 and December 31, 2019. Eosinophilia was classified as mild (absolute eosinophil count [AEC]500 and 1500 cells/μL), moderate (AEC1500 and 4500 cells/μL), or severe (AEC4500 cells/μL). Demographic information and diagnostic workup data were collected.A total of 771 patients aged18 years were evaluated. The most common cause of eosinophilia was allergy (n = 357; 46%), with atopy (n = 296) and drug reaction (n = 54) the most common subcauses. This was followed by unknown etiology (n = 274; 36%), infectious causes (n = 72; 9%), and eosinophilic disorders (n = 47; 6%). Many patients with an unknown cause (n = 202; 74%) had limited or no follow-up testing.More information on the etiology of pediatric eosinophilia and workup data could help identify the causes. This study provides important information on the evaluation of eosinophilia in the US pediatric population, including a diagnostic algorithm to guide primary care pediatricians.

Submitted by Bianca CEH/A (bianca.silveira@uerj.br) on 2021-12-17T17:19:31Z No. of bitstreams: 2 Dissertaçao-Veronica Diaz Rocha-2020-completa.pdf: 6580545 bytes, checksum: 9ef3b1621992fd258c0975e081c07e36 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Made available in DSpace on 2021-12-17T17:19:31Z (GMT). No. of bitstreams: 2 Dissertaçao-Veronica Diaz Rocha-2020-completa.pdf: 6580545 bytes, checksum: 9ef3b1621992fd258c0975e081c07e36 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2020-12-14 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Study of the cultural policies implemented in the city of Rio de Janeiro from 2014 to 2018, investigating their relationship with inequalities through the notions of territorial democratization and cultural diversity, under the focus of the public budget. The research is based on the official documents referring to each of the two administrations covered in the studied period: Eduardo Paes (2014 to 2016) and Marcelo Crivella (2017 to 2018). Strategic Plans are here analyzed with the launch of the political initiatives, Accountability Reports with record of results, as well as Multiannual Plans 2014-2017 and 2018-2021, and the corresponding Annual Budget Laws. The construction of maps using QGIS software enabled the visualization of the territorial distribution of resources for the main actions carried out, focused on equipment and the promotion of cultural production. Historical and demographic information reveal the racial dimension of the implemented cultural policies, whose quantitative results mainly point to the deepening of inequalities. Estudo das políticas culturais implantadas na cidade do Rio de Janeiro, no período de 2014 a 2018, investigando sua relação com as desigualdades por meio das noções de democratização territorial e de diversidade cultural, sob enfoque do orçamento público. A pesquisa tomou por base os documentos oficiais referentes a cada uma das duas gestões abarcadas no período estudado: Eduardo Paes (2014 a 2016) e Marcelo Crivella (2017 a 2018). Aqui são analisados os Planos Estratégicos, com o lançamento das iniciativas políticas, os Relatórios de Prestação de Contas, com o registro dos resultados, bem como os Planos Plurianuais 2014-2017 e 2018-2021 e as Leis Orçamentárias Anuais correspondentes. A construção de mapas com o programa QGIS possibilitou a visualização da distribuição territorial dos recursos para as principais ações executadas, voltadas para os equipamentos e para o fomento à produção cultural. Informações históricas e demográficas revelam a dimensão racial das políticas culturais implementadas, cujos resultados quantitativos apontam majoritariamente para o aprofundamento das desigualdades.

Background and purpose Massive Open Online Courses (MOOCs) offer an innovative approach to pharmacy education and are expected to challenge traditional pedagogy and foundational knowledge acquisition practices. A survey of the literature reveals no current publications describing implementation of MOOCs in pharmacy education and limited information about MOOC implementation in other healthcare disciplines in the United States. Educational activity and setting A few colleges of pharmacy (COPs) and other health professions’ educational programs have recently started offering MOOCs. Findings Herein we provide an overview of MOOCs and describe the early implementation stages of MOOCs being conducted at two COPs, an interprofessional MOOC, and a variety of MOOCs offered by a public health program. This overview and the four case studies on MOOC implementation in healthcare education provide practical information about course development, descriptions of selected course engagement outcomes, insight into lessons learned by the institutions, and practical considerations for development of future MOOCs. Discussion MOOCs prompt diversification of models of teaching and learning, transformation of pedagogical frameworks, and innovation in the scholarship of teaching and learning. Summary MOOCs offer exciting opportunities to distribute knowledge on a massive and global scale to a diverse population of learners.

Background Peripheral eosinophilia can be caused by many underlying conditions, including infectious pathogens, allergic disorders, neoplastic disorders, and immunological disorders. However, uncovering the cause of eosinophilia in children can be challenging due to the wide differential diagnosis. Methods To identify causes and risk factors of eosinophilia in children, we performed a retrospective chart review of children presenting to Texas Children’s Hospital in Houston, TX with peripheral eosinophilia from January 1, 2011 to December 31, 2019. Eosinophilia was classified as mild (absolute eosinophilia count or AEC >500 and < 1500), moderate (AEC >1500 and < 5000) and severe (AEC > 5000). Demographic information in addition to travel history, co-morbid conditions, and diagnostic workup were collected. Results A total of 773 patients under 18 years of age were evaluated. The most common cause of eosinophilia in children was atopy (N=343, 44%), followed by eosinophilia of unknown etiology (N=227, 29%). Infectious pathogens were the etiology in 8% of cases of which all were parasitic pathogens. Helminthic (n=48, 79% of parasitic diseases in total) pathogens were more common than protozoan (n=13, 21% of parasitic diseases in total) and patients with parasitic infections had higher median eosinophilia compared to other subgroups (median = 1661, range 512-17,501) with the majority having moderate to severe eosinophilia (57%). The most common helminth was Toxocara (n=31), followed by Strongyloides (n=15), and, more rarely, pinworms (n=4). The most common protozoa identified was Dientamoeba fragilis (n=9), followed by Giardia species (n=5), Endolimax nana (n=4), Blastocystis species (n=3), and Iodamoeba butschlii (n=1). Many unknown cases had limited workup that did not include investigations for common parasites. Conclusion While atopy and unknown etiology were the most common diagnoses for children presenting with eosinophilia, parasites were relatively common and should be considered in the differential when investigating etiologies for peripheral eosinophilia. Disclosures Joud Hajjar, MD, MS, Baxalta (Grant/Research Support)Horizon (Advisor or Review Panel member)Pharming (Advisor or Review Panel member)

Introducción: la comunicación es considerada la principal herramienta en el trabajo de los integrantes del equipo de Atención Primaria de la Salud (APS) con los pacientes, con la comunidad, con los niveles políticos y gerenciales, entre niveles de atención y los propios miembros del equipo.Objetivo: describir las estrategias de comunicación y su impacto en el desempeño de integrantes de Equipo de Atención Primaria de la Salud.Método: estudio observacional, descriptivo, transeccional en los 18 centros de salud de la zona Sanitaria No. 4. Municipalidad de Córdoba en 2020. Se estudiaron 74 integrantes de los centros de salud. Las preguntas se tabularon de acuerdo a la escala Likert para términos de acuerdo y frecuencia. Resultados: la edad promedio fue de 42,74 ± 9,41 años, prevalecieron el sexo femenino en el 58,6% y 48,5% son enfermeros profesionales y licenciados. La antigüedad laboral promedio fue de 13,02 ± 7,51 años. Las estrategias de comunicación no perciben a la enfermería como gestora con 37 respuestas negativas 2,75 ± 0,43. Sobre el plan comunicacional, el 54,28% no perciben de manera positiva participar en gestión de las redes de salud 2,23 ± 0,71. Las estrategias para la gestión de enfermería en el plan comunicacional no se relacionan (rho=0,0391, P=0,7480)Conclusiones: existe buena percepción en las estrategias comunicacionales excepto para la enfermera como gestora. El plan comunicacional muestra tener relación con las estrategias comunicaciones excepto para la gestión de enfermería.

Protein prenylation is a post-translational modification that involves the addition of one or two isoprenoid groups to the C-terminus of selected proteins using either farnesyl diphosphate or geranylgeranyl diphosphate. Three crucial enzymatic steps are involved in the processing of prenylated proteins to yield the final mature product. The farnesylated dodecapeptide, a-factor, is particularly useful for studies of protein prenylation because it requires the identical three-step process to generate the same C-terminal farnesylated cysteine methyl ester substructure present in larger farnesylated proteins. Recently, several groups have developed isoprenoid analogs bearing azide and alkyne groups that can be used in metabolic labeling experiments. Those compounds have proven useful for profiling prenylated proteins and also show great promise as tools to study how the levels of prenylated proteins vary in different disease models. Herein, we describe the preparation and use of prenylated a-factor analogs, and precursor peptides, to investigate two key questions. First, a-factor analogues containing modified isoprenoids were prepared to evaluate whether the non-natural lipid group interferes with the biological activity of the a-factor. Second, a-factor-derived precursor peptides were synthesized to evaluate whether they can be efficiently processed by the yeast proteases Rce1 and Ste24 as well as the yeast methyltransferase Ste14 to yield mature a-factor analogues. Taken together, the results reported here indicate that metabolic labeling experiments with azide- and alkyne-functionalized isoprenoids can yield prenylated products that are fully processed and biologically functional. Overall, these observations suggest that the isoprenoids studied here that incorporate bio-orthogonal functionality can be used in metabolic labeling experiments without concern that they will induce undesired physiological changes that may complicate data interpretation.

Piscirickettsia salmonis and Caligus rogercresseyi are highly transmissible pathogens that cause high mortality in farmed salmonids. Detection of them, in most cases are well characterized for being time consuming and expensive. In this way, new techniques based on mass spectrometry and machine learning were applied and combined in an automatized platform in order to classify and predict these pathogens, in a faster and effective way. MALDI-MS was used to analyze serum samples from salmonid fishes (healthy and diseased) coupled to support vector machines analysis in order to obtain a specific and sensitive pattern ( m/z ) for every pathogen with high reproducibility. The results probed that combining these two techniques a powerful tool in the correct detection of these pathogens is obtained. Accuracy, sensitivity and specificity were equal to or > 92%, implying the good performance of our platform as a potential diagnostic tool in the salmon farming industry.

In this article, the performance and errors are featured and analysed in the limit problems solving of a real-valued function, in correspondence to competency-based education in engineering careers, in the south of Chile. The methodological component is contextualised in a qualitative research, with a descriptive and explorative design, with elaboration, content validation and application of quantitative instruments, consisting of two parallel forms of open answer tests, based on limit application problems. The mathematical competences and errors made by students from five engineering careers from a public University are identified and characterized. Results show better performance only to solve routine-context problem-solving competence, thus they are oriented towards a rational solution or they use a suitable problem-solving method, achieving the correct solution. Regarding errors, most of them are related to techniques and the incorrect use of theorems and definitions of real-valued function limits of real variable.

Piscirickettsia salmonis is a pathogenic bacteria known as the aetiological agent of the salmonid rickettsial syndrome and causes a high mortality in farmed salmonid fishes. Detection of P. salmonis in farmed fishes is based mainly on molecular biology and immunohistochemistry techniques. These techniques are in most of the cases expensive and time consuming. In the search of new alternatives to detect the presence of P. salmonis in salmonid fishes, this work proposed the use of MALDI-TOF-MS to compare serum protein profiles from Salmo salar fish, including experimentally infected and non-infected fishes using principal component analysis (PCA). Samples were obtained from a controlled bioassay where S. salar was challenged with P. salmonis in a cohabitation model and classified according to the presence or absence of the bacteria by real time PCR analysis. MALDI spectra of the fish serum samples showed differences in its serum protein composition. These differences were corroborated with PCA analysis. The results demonstrated that the use of both MALDI-TOF-MS and PCA represents a useful tool to discriminate the fish status through the analysis of salmonid serum samples.

A study and its preliminary results are presented. The research is descriptive and exploratory and it is still in process. Its objective is to develop an assessment method in the field of fostering values using competence mathematics problem solving. This is part of a more extensive research that aims at contributing to educational integration in Latin America, particularly to the development of proposals to link education for citizenship and the mathematics lessons. This is being carried out by research teams of University of Barcelona-España; University Nacional of Costa Rica; University Autónoma of Querétaro-México; Pontificia University Católica of Perú, University Nacional of Villa María- Argentina and University of Los Lagos-Chile, in the context of Andrés Bello Chair for the Association of Latin American Universities. This research was developed and implemented in Chile in 2016, using mixed research methods. It included interviews and a problem-solving math test with ethical values that was administered to students of the secondary education of the regions of Los Ríos and of the Lakes of Chile. The results show the lack of integration between the teaching of values and science discipline.

Background According to the Psychometric Paradigm with the appropriate design of instruments, risk perception can be measured; only ‘The Perception of Risk Scale’ in English, was found about this theme. The aim of this study was to develop and pilot test the validation of an instrument ‘Parents’ Risk Perception about Children’s Injuries’, in Spanish. Methods Comprised on a series of steps: 1. Literature review of the theme and previous instruments. 2. Initial development of items. 3. Application of Content Validity Analysis (CVI) (McGartland, et al., 2003). 4. Final proposal of instrument, 102 items, in 12 dimensions some with sub-dimensions. 5. Cronbach’s Alpha sample calculation, for the development of a new scale is acceptable a range of 24 to 36 participants (Johanson & Brooks, 2010). 6. Definition of sample population and criteria. 7. Design of the instrument, created for an optic reader. 8. Application of the instrument and consent form. 9. Data analysis, on Excel 2010 and SPSS 19. Results The CVI sample was five professional and five lay experts, results meet the values for new instruments with CVI=0.911. For Cronbach’s Alpha, the sample consisted on 15 mothers and 14 fathers with at least one children under 16 years old, obtained by convenience. The result for the whole instrument was α=0.894. After eliminating 18 items, α=0.901; leaving the instrument with 84 items. Discussion For reducing the scale and making it more convenient, using the Spearman-Brown prophecy, assuming that the quality of the questions is the same, the instrument is reduced to 42 items and the Cronbach’s Alpha falls to an acceptable level of α=0.82. Conclusion The scale was not validated, only an exploratory study was developed, the next step would be to redesign and apply again a pilot test, if successful continue with validation.

The mating pheromone a-factor is a lipidated dodecapeptide found in the budding yeast S. cerevisiae. The biosynthesis of this peptide encompasses the same three-step processing pathway (farnesylation of C-terminal cysteine, C-terminal proteolysis and C-terminal methyl esterification) as Ras proteins, mutated forms of which have been found in ~30% of human cancers. For the mating of two haploid yeast cells into a diploid cell to happen, the a-factor pheromone travels to the cell surface of the opposite mating cell, where it binds and activates a G-protein coupled receptor. This lipidated-peptide/protein interaction has caught the attention of researchers studying protein prenylation, and studies have shown that this peptide can be used as a model system to understand the role of prenyl groups in protein-protein interactions. Here, we review the different methods used for the synthesis of a-factor and a-factor analogs containing C-terminal cysteine esters and the assays developed for detecting pheromone bioactivity and quantitation of pheromone efficiency. Also, we review crucial peptide modifications that have been used to investigate relationships between the structure and activity of this lipopeptide with its receptor Ste3p. Finally, we aim to discuss recent and future applications of a-factor as a chemical biology tool to study protein prenylation. These include the use of photo crosslinking reactions to map peptide/receptor interactions, the addition of fluorophore tags to visualize the peptide binding, and the use of bio-orthogonal reactions for protein labeling and protein purification.

Peptides containing C-terminal esters are an important class of bioactive molecules that includes a-factor, a farnesylated dodecapeptide, involved in the mating of Saccharomyces cerevisiae. Here, results that expand the scope of solid-phase peptide synthetic methodology that uses trityl side-chain anchoring for the preparation of peptides with C-terminal cysteine alkyl esters are described. In this method, Fmoc-protected C-terminal cysteine esters are anchored to trityl chloride resin and extended by standard solid-phase procedures followed by acidolytic cleavage and HPLC purification. Analysis using a Gly-Phe-Cys-OMe model tripeptide revealed minimal epimerization of the C-terminal cysteine residue under basic conditions used for Fmoc deprotection. (1)H NMR analysis of the unfarnesylated a-factor precursor peptide confirmed the absence of epimerization. The side-chain anchoring method was used to produce wild-type a-factor that contains a C-terminal methyl ester along with ethyl-, isopropyl-, and benzyl-ester analogs in good yield. Activity assays using a yeast-mating assay demonstrate that while the ethyl and isopropyl esters manifest near-wild-type activity, the benzyl ester-containing analog is ca. 100-fold less active. This simple method opens the door to the synthesis of a variety of C-terminal ester-modified peptides that should be useful in studies of protein prenylation and other structurally related biological processes.

A new cysteine anchoring method was developed for the synthesis of peptides containing C-terminal cysteine methyl esters. This method consists of attachment of Fmoc-Cys-OCH(3) to either 2-ClTrt-Cl or Trt-Cl resins (via the side-chain thiol) followed by preparation of the desired peptide using Fmoc-based SPPS. We applied this method to the synthesis of the mating pheromone a-factor and a 5-FAM labeled a-factor analog. The peptides were obtained with high yield and purity and were shown to be bioactive in a growth arrest assay.

As online learning continues to grow, so do the free or nearly free Web 2.0 and emerging online learning technologies available to faculty and students. This chapter explores the implementation process and corresponding considerations of adapting such tools for teaching and learning. Issues addressed include copyright, intellectual property, support, and privacy.

PurposeThe purpose of this paper is to report on the degree of success in international assignments that public relations (PR) practitioners experience and explores the influence of both organizational culture and national culture.Design/methodology/approachPR practitioners in the USA and South Africa were surveyed.FindingsResults show that there is no difference between PR practitioners from the USA and South Africa with experience in international assignments, in terms of degree of success in international assignments and of level of preparedness for international assignments. It was also found that there is no significant correlation between national culture or organizational culture and the degree of success in international assignments for those respondents with international experience.Research limitations/implicationsThe response rate was limited and therefore the results cannot be generalized. Future research would be to further extend this study to include additional countries.Practical implicationsThe results support the concept that a PR practitioner with an organic organizational culture and a long‐term orientation of national culture will be better prepared to engage in international assignments than a practitioner with a mechanistic organizational culture and a short‐term orientation of national culture.Originality/valueThis study adds to the literature on international PR practice, and compares the practice in a developing economy, South Africa, to a developed economy, the USA.

Dual-rail Precharged Logic (DPL) theoretically withstands Side-Channel Attacks owing to its physical-level compensation manner between the tailored complementary rails. However, the security grade of DPLs can be severely impaired by the innate silicon Process Variation (PV), even the two rails are identically constructed. In this paper, an active thermal compensation system is presented to alleviate the PV-relevant security tension for SCA-resistant dual-rail logic. The devised system consists of a Ring-Oscillator (RO) based temperature sensor pair and two groups of heat generators, respectively scaled with each of the complementary crypto cores. The heaters are automatically switched on in accordance to the frequency difference measured by the ROs. The more secure compensation is achieved by tuning the local thermal to the one wherein higher RO frequency is detected, for affecting the local electrical characteristics to slow down the higher frequency. The protocol of the system and the implementation flow are detailed in this paper. The security verifications are validated by employing the RO thermal system to a lightweight crypto coprocessor in its identical dual-rail format. The experiment results certified elevated security grade to the crypto cores on Virtex-5 FPGA when the thermal compensation system is switched on. Accepted version

This chapter presents additional information and resources for distance educators at community colleges, focusing in particular on the Americans with Disabilities Act, the TEACH Act, and learning objects and models.

In response to the argument against the theory that fair use exists only to fill a need that the market cannot, and in favor of the constitutional purpose of copyright law to balance between the rights of creators and the public, this paper suggests that varied and often understated uses of copyrighted materials exist in academic settings. Four "frames" of reference are introduced: Academic, Technological, Social, and Market. Court cases relevant to each frame are presented, and two scenarios involving the use of copyrighted materials are explored. As technology increases both access and control, it is important to preserve and continue the tradition of fair use in higher education and to differentiate it from other commercial uses.

Background The use of the technologies in the everyday life brings benefits and risks, being a lot of them in home. According to the World Health Organisation, 90% of injuries to young children occur in or around home. Burns being in this place, the most frequent injury in Mexico. Methods Multidimensional unfolding is a technique that maps ranking data into a low-multidimensional space that allows for a visual comprehension of the data. 28 parents of Guadalajara, Mexico (15 mothers, 13 fathers), were asked about frequency of use of technologies; involving cooking equipment, light, and heat sources. Then they sorted them in a series of cards, by three different criteria: perceived risk, benefits and the necessity for law implementation in their use. Results The most used technologies were gas stove, lighter, water heater, iron, matches and microwave. The least used technologies were oil lamp, fireworks, wood stove, gas grill and electric grill. The three perceptual maps obtained have two dimensions, which show two sets of objects each: the subjects (the sample of 28 parents) as numbers, and the objects (each technology) as labels. Parents perceived: more risks from fireworks and wood stove; most benefits from gas stove, water heater, and microwave; and the need of laws for fireworks. Conclusions Laws are one of the most efficient ways to get people to adopt safe behaviours. Although it is important to consider that, people are more willing to accept laws for those things that they do not use or perceive as beneficial. In this case, parents did not use fireworks and also perceived them as risky without benefit and with the necessity of laws. Unlike the gas stove, being the most used, perceived with more benefits; without risks, and no need for laws. This is the first exploration in Mexico about the theme. An overwhelming majority of burns occur in house and kitchen; it requires further research about overconfidence and optimism bias around technologies.

Background Unintentional injuries are a significant issue of public health, accounting 60% of infant mortality around the globe. In Mexico, burns are the most frequent injury at home. This research explores parents risk perceptions about children’s injuries and burns. Methods Multidimensional unfolding is a technique that maps ranking data into a low-multidimensional space that allows for a visual comprehension of the data. 28 parents of Guadalajara, Mexico (15 mothers, 13 fathers), were asked to sort three series of cards (adverse events, agents that could cause a burn, and people who take care of a child) by two different criteria: probability and severity. The last series was sorted only by probability. Results The five perceptual maps have two dimensions, which show two sets of objects each: the subjects (the sample of 28 parents) as numbers, and the objects (either adverse events, agents that could cause a burn or people who take care of a child) as labels. The closer a number is to a label, the more probable or severe the label is considered by that number. Unfolding also permits for sub-dimensions or clusters in the configuration. Parents perceived as more probable to happen: fall, choking, and cut. They did not considered cut and fall as severe. Sun, hot liquids, and hot objects were the most probable agents. None perceived sun, ice, hot objects, smoke, and steam as severe agents. Mother and father were considered the least probable to experience a children’s injury. Conclusions Multidimensional unfolding is an exploratory technique; ideal for research for the first time in Mexico, parents perceived risks or not. For example, smoke was perceived as not probable to cause a burn and ignore as severe. According to the World Health Organisation, burns include the respiratory damage resulting from smoke, being the most frequent cause of death. Parents were omitting important information. This is only the first step, is essential further investigation in this area.

Fuente TESIUNAM

Background and Aims: Exposure to environmental an occupational and inhalation of hazardous substances (polycyclic aromatic), toxins and pregnant before 25 or after age 35 are factors that increase ...

El estudio descrito en esta tesis está orientado a conocer los procesos y mecanismos de relevancia en la interacción bacteria/mineral sulfuroso bajo condiciones experimentales equiparables al medio de flotación. La directriz principal es el desarrollo de investigaciones, que permitan generar conocimiento fundamental, de interés en el futuro diseño de tecnología para la explotación de mezclas minerales complejas, típicas de yacimientos mexicanos. Se presenta la experimentación empleando sulfuros complejos (calcopirita/pirrotita), en presencia de la bacteria Leptospirillum ferrooxidans. Asimismo, se efectúa una evaluación de un colector no convencional (tionocarbamato) que presenta ventajas en selectividad y resistencia al medio ácido respecto a xantatos. El estudio estará dirigido a dos aspectos generales: el proceso de bioflotación en sí y el desarrollo y aplicación de bioreactivos de flotación. Para lograr lo anterior se considera lo siguiente: (i) establecer los procesos relevantes en la interacción bacteria/mineral; (ii) caracterizar la adhesión bacteriana y su efecto en la modificación superficial de los sulfuros de interés; (iii) evaluar el impacto de fenómenos de trascendencia en sistemas de flotación de sulfuros, como el contacto galvánico y la activación por especies de cobre en bioflotación; (iv) determinar la influencia del colector no convencional en la interacción bacteria/mineral; (v) establecer métodos de modificación química superficial de las células bacterianas con el fin de generar bioreactivos eficientes para las características de los minerales involucrados.