Effect of Oil Content of Sunflower Seeds on the Equilibrium Moisture Relationship and the Safe Storage Condition

The adsorption and desorption equilibrium moisture content/equilibrium relative humidity relationships of sunflower seeds with four different oil contents (35.7%, 44.6%, 48.6% and 52.7%) were obtained for temperatures of 8, 15, 25 and 35°C and moisture contents of 6.0%, 8.5%, 11.0%, 13.5%, 16.0% and 18.5%.The goodness of fit of four equilibrium moisture content/equilibrium relative humidity models (Modified Henderson, Modified Chung-Pfost, Modified Halsey and Modified Oswin) were evaluated for each oil content. The Modified Halsey model was the best for predicting equilibrium moisture content/equilibrium relative humidity relationships based on the Akaike Information Criterion, the Bayesian Information Criterion and estimated residual standard derivation. The optimized parameters for the Modified Halsey model are presented for each oil content. Results indicate that the oil content substantially affected the equilibrium moisture content/equilibrium relative humidity relationship. As the oil content increases, the equilibrium relative humidity also increases for the same moisture content, meaning that to use the right set of parameters according to the oil content of the hybrids is critical for sunflower drying, conditioning and storing. The safe storage moisture content varied from 12.0% to 7.6% for seeds with oil contents from 35.7% to 52.7%, implying that a revision of the sunflower market moisture content might be required for safe storage of hybrids with high oil content

Hypertrophic Scarring

Hypertrophic scars represent important problems because of the presence of pain, pruritus, contractures, as well as unsatisfactory aesthetic results. Currently, the evidence shows that a multidisciplinary management through prevention, adequate choice of suture, atraumatic surgical technique, and early noninvasive measures can favor the handling of these problems and continue with invasive measures that employ intralesional drugs. Clearly, the combination of surgical, technical, and pharmacological interventions will maximize therapeutic results

Evolución de factores competitivos de la empresa familiar ante cambios en la propiedad: el caso mexicano estudiado en Estado de México, Tamaulipas, Quintana Roo y Puebla

El interés creciente por hacer perdurar las actividades económicas de la empresa familiar conduce gradualmente a realizar mayores esfuerzos de investigación con la finalidad de mejorar su comprensión y conocimiento para así reducir su vulnerabilidad. El presente trabajo se inscribe en la Teoría de los Recursos y Capacidades y se interesa en conocer la evolución de algunos factores internos a la empresa familiar relacionados con la competitividad y el cambio de propiedad en cuatro estados de México. Este documento es el resultado del trabajo colectivo de una red de investigación, cuyos autores pertenecen a la Universidad Anáhuac, Universidad Autónoma de Tamaulipas, Universidad de Quintana Roo y Universidad de las Américas.

Conhecimentos e práticas de trabalhadores de uma creche acerca do aleitamento materno

Sendo o aleitamento materno um comportamento que pode ser influenciado por fatores ambientais e pessoais, este estudo objetivou caracterizar conhecimentos e práticas de trabalhadores de uma creche acerca dessa ação. Foram entrevistados dez trabalhadores de um Centro Infantil (CI) que atuaram com crianças menores de um ano, no período de 2003 a 2007. Os resultados originaram quatro temas. O primeiro, A Importância do Aleitamento Materno na Creche, destaca sua relação com o desenvolvimento infantil, com a adaptação ao CI e com o vínculo materno, evidenciando que os conhecimentos são provenientes da prática diária ou da mídia. Tais conhecimentos empíricos são repassados às mães no momento da matrícula e em outros contatos e podem impactar na manutenção ou não do aleitamento. O tema O aleitamento depende do interesse das mães aponta que elas frequentemente desistem de aleitar e que tal decisão resulta da falta de persistência em superar dificuldades relativas ao trabalho, pois seu acesso ao CI para amamentar é livre. Quanto às facilidades relacionadas ao aleitamento materno na creche, surge o apoio oferecido pela instituição, a garantia legal ao aleitamento e suas práticas de reforçar a importância do aleitamento para as mães. As dificuldades relacionadas ao aleitamento na creche incluem a distância entre o local de trabalho e o CI e a relação de dependência quando da manutenção do aleitamento, para os funcionários. A formação de uma rede de apoio à amamentação, com instituições de saúde, possibilitaria preparar os trabalhadores do Centro Infantil quanto aos benefícios do aleitamento materno e às estratégias de ação para que fossem agentes promotores dessa prática.Since breastfeeding is a behaviour which can be influenced by environmental and personal factors, this study aimed to characterize the workers' knowledge and practices of a Child Day Care Center regarding to this action. Ten professionals of a Child Center (CC) who worked from 2003 to 2007 caring for infants under one year old were interviewed. The results were organized in four themes. The first one, The Importance of Breastfeeding at the Day Care Center, highlights its relation to the infant's development, to the adaptation of the children to CC and to child's connection to mother. Probably those are empirical knowledge, which come from the daily practice or the media. When they are reinforced to the mothers at the child's enrollment and during other contacts they can impact on keeping or not breastfeeding. The theme Breastfeeding depends on the mother's interest points out that mothers often give up breastfeeding and that decision comes from lack of persistence in overcoming difficulties related to work, once their access to CC for breastfeeding is free. Regarding to Easiness Related to Breastfeeding at the Day Care Center, it is emphasized the support offered by the facility, the legal guarantee to breastfeeding and the practices of the workers to reinforce the importance of breastfeeding to the mothers. The Difficulties Related to Breastfeeding at the Day Care Center comprise the distance between workplace and the CC, as well the dependence of the workers to waiting the mother for breastfeeding. The development of a breastfeeding support network with healthcare facilities would strengthen the CC workers regarding to the benefits of breastfeeding and to the action strategies to promote this practice

Cross Pollination's Nomadic Laboratory: a praxis in-between practices

This collaborative writing presents the ways in which practitioner-researchers from Cross Pollination (CP), an international arts research platform with a focus on knowledge exchange, create nomadic and temporary laboratory spaces. It is argued that the encounter between different experiences of performative craft generates epistemic insights that enable members of the platform to rearticulate their practices through the reterritorialization of specialized techniques. Furthermore, the article discusses how an ethos of companionship may appear through dialogical and horizontal practices, contributing to a renewal of the theatre laboratory

La enseñanza de la biología, en las escuelas formadoras de docentes de educación básica en México, siglo XX.

The purpose of this text is to publicize the training of basic education teachers in Mexico, taking Biology as a reference. For this, a documentary review is made in specialized sources about teaching. The information collected was ordered based on the content of Biology or related and pedagogical discipline. For the analysis, the contents of the teacher training curricula, their political time and current educational program were related. The Biology curriculum in the Mexican education system was forged in the socialist school, there it was divided into a naturalist and doctor (hygiene and health), which is preserved to this day. The Biology content of the basic education curricula has a direct relationship with the educational level, at a lower level the lower Biology content and vice versa. There is a generic training in preschool, in it the pedagogical and practical predominate. In primary education, the pedagogical and disciplinary are balanced, but Biology is not addressed as such. In Secondary is where Biology and its teaching are seen as such. It is concluded that the level defines the disciplinary density in teacher training in the training schools of basic education in Mexico.Este texto tiene como propósito dar a conocer la formación de los docentes de Educación Básica en México, tomando como referente la Biología. Para ello se hace una revisión documental de sus currículos de formación en fuentes especializadas sobre el magisterio. Se ordenó la información recabada tomando como ejes el contenido de Biología o disciplinas afines y lo pedagógico. Para el análisis se relacionaron los contenidos de los currículos de formación de los docentes, su tiempo político y programa educativo vigente. El currículo de Biología en el sistema educativo mexicano se forjó en la escuela socialista, ahí se dividió en naturalista y médico (higiene y salud), que se conserva hasta nuestros días. El contenido de Biología de los currículos de educación básica tiene una relación directa con el nivel educativo, a menor nivel menor contenido de Biología y viceversa. Se da una formación genérica en preescolar, en ella predomina lo pedagógico y la práctica. En primaria se equilibra lo pedagógico y disciplinar pero no se aborda la Biología como tal. En Secundaria es donde la Biología y su didáctica son vistas como tales. Se concluye que el nivel define la densidad disciplinar en la formación de docentes en las escuelas formadoras de la educación básica en México

OTIMIZAÇÃO DA HIDRÓLISE ÁCIDA DE AMIDO POR ULTRASSOM E REFLUXO

A determinação do conteúdo de carboidratos é importante para a caracterização e para o controle de qualidade em diversos alimentos e bebidas. Um dos métodos mais utilizados para quantificação de açucares em alimentos é o método de Lane-Eynon, em função do seu baixo custo, relativa simplicidade e por tratar-se de um método titulométrico. O objetivo deste artigo foi estudar alternativas viáveis para hidrolise de amido, utilizando ultrassom e refluxo, afim de otimizar as variáveis tempo e concentração de amido que chegassem ao maior rendimento possível. Os resultados mostraram que o maior rendimento obtido foi utilizando refluxo, na concentração de 1  %(m/m) no tempo de 20 min, com 10 mL de HCl. O uso do ultrassom não se mostrou eficiente.

Dimensional analysis of soil properties after treatment with the rotary paraplow, a new conservationist tillage tool

This study examined a new conservation tillage tool, the "rotary paraplow". Emphasis was placed on evaluating the tool's conservation potential using dimensionless graph analysis. The dynamic conditions of the soil were investigated in terms of physical soil properties. Having determined the variables to be measured, dimensional analysis was used to plan the experiments. Two variations were considered for each dependent variable (linear speed, working depth, and rotation velocity), totaling eight treatments, allotting in each an experimental strip with five data collection points. This arrangement totaled 16 experimental strips, with 80 data collection points for all variables. The rotary paraplow generates a trapezoidal furrow for planting with a very wide bottom and narrower at the top. The volumetric subsoiling action generates cracks on the sides of the band. Because of their specific geometry the blades of rotary paraplow generate a soil failure according to its natural crack angle, optimizing the energy use, while preserving the natural soil properties. Results showed the conservation character of the rotary paraplow, capable of breaking up clods for planting without changing the original physical soil properties.93693701FINE

Does antennal sensilla pattern of different populations of Triatoma maculata (Hemiptera: Reduviidae) reveal phenotypic variability?

Background: In Brazil, Triatoma maculata is only found in the State of Roraima and is a vector of Trypanosoma cruzi, the etiological agent of Chagas disease. It occurs in wild, peridomestic and domestic habitats, with an urban infestation in Boa Vista, the capital of this Brazilian state. The aim of this study was to assess the morphological variability of the T. maculata antennal phenotype in three populations of Roraima State, using the antennal sensilla pattern analyzed under optical microscopy. Methods: The number and distribution of four antennal sensilla types (bristles, thin and thick walled trichoidea, and basiconic) of three Brazilian populations of T. maculata from Roraima State were compared. Univariate and multivariate analyses were performed. Results: The antenna of T. maculata presented the four types of sensilla. According to the density and distribution of the antennal sensilla characteristics, the multivariate analyses showed that the laboratory population is morphologically structured. Urban specimens showed a pronounced phenotypic variability. The main differences were observed in the pedicel segment, and between males and females. Conclusions: We determined the antennal phenotype in three Roraima populations of T. maculata. These results support the idea that the patterns of antennal sensilla are sensitive markers for distinct populations in the Triatominae. The infestations of T. maculata in different habitats reinforces the ability of this vector to become adapted to a variety of environments, which, could have eco-epidemiological implications for the T. cruzi transmission that are still not well understood.Fil: Nogueira Müller, Josiane. Instituto Oswaldo Cruz; BrasilFil: Monte Gonçalves, Teresa. Instituto Oswaldo Cruz; BrasilFil: Ricardo Silva, Alice Helena. Instituto Oswaldo Cruz; BrasilFil: Coutinho Souza, Amanda. Instituto Oswaldo Cruz; BrasilFil: Maciel Santos, Francisco. No especifíca;Fil: Santos, Rosangela. No especifíca;Fil: Coelho Vargas, Nathalia. No especifíca;Fil: Macedo Lopes, Catarina. Instituto Oswaldo Cruz; BrasilFil: Carbajal de la Fuente, Ana Laura. Dirección Nacional de Institutos de Investigación. Administración Nacional de Laboratorios e Institutos de Salud. Centro Nacional de Diagnóstico e Investigaciones Endemo-epidémicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentin

Health-care guidelines and policies during the COVID-19 pandemic in Mexico: a case of health-inequalities

Background Heterogeneous government responses have been reported in reaction to COVID-19. The aim of this study is to generate an exploratory review of healthcare policies published during COVID-19 by health-care institutions in Mexico. Analyzing policies within different health sub-systems becomes imperative in the Mexican case due to the longstanding fragmentation of the health-care system and health inequalities. Data and Methods Policies purposely included in the analysis were published by four public health institutions (IMSS, ISSSTE, SSA and PEMEX) during the COVID-19 epidemic in Mexico (from February 29th to June 15th, 2020) on official institutional websites. Researchers reviewed each document and classified them into seven policy categories set by the Rapid Research Evaluation and Appraisal Lab (RREAL): public health response, health-care delivery, human resources, health-system infrastructure and supplies, clinical response, health-care management, and epidemiological surveillance. Results Policy types varied by health institution. The largest number of policies were aimed at public health responses followed by health-care delivery and human resources. Policies were mainly published during the community transmission phase. Conclusions The pandemic exposed underlying health-care system inequalities and a reactive rather than prepared response to the outbreak. Additionally, this study outlines potential policy gaps and delays in the response that could be avoided in the future