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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

The murder in merger developmental processes of a corporate merger and the struggle between life and death impulses /

De Gooijer, Jinette. January 2006 (has links)
Thesis (PhD) -- Swinburne University of Technology, Australian Graduate School of Entrepreneurship, 2006. / Submitted for the degree of Doctor of Philosophy - Australian Graduate School of Entrepreneurship, Swinburne University of Technology, 2006. Typescript. Includes bibliographical references (p. 251-263).
162

Coronary heart disease in Swedish twins : quantitative genetic studies /

Zdravkovic, Slobodan, January 2006 (has links)
Diss. (sammanfattning) Stockholm : Karolinska institutet, 2006. / Härtill 4 uppsatser.
163

"Methinks you my glass" : Shakespeare's twins in text and performance /

Kling, Kelsey A. January 1900 (has links)
Thesis (M.A.)--Texas State University--San Marcos, 2008. / Vita. Includes bibliographical references (leaves 74-79). Also available on microfilm.
164

Congenital facial deformity : experiences of mothers of twins

Fernihough, Melissa 06 1900 (has links)
The topic of cleft lip and/or palate is widely researched in literature. However no research to date has focused on mothers' experiences raising twins when one twin is born with a cleft lip and/or palate. This qualitative study aims to explore the unigue experiences of these mothers. The epistemological foundations of this study are postmodern, social constructionist and systemic. In accordance with a gualitative methodology data was collected in the form of the participants' personal written stories. This was done from a post-modern paradigm, from a systemic perspective. Themes that were extracted from the stories according to thematic content analysis, not only reflect the experiences of mothers raising twins when one twin is born with a cleft lip and/or palate, they also provide an in-depth understanding of these mothers' experiences and unique situations. Recommendations for future research are offered. / Psychology / M.A. (Clinical Psychology)
165

"Twin Peaks" : investigando mistérios sobre a gemelaridade no Brasil

Santos, Augusto César Cardoso dos January 2018 (has links)
O nascimento de gêmeos na espécie humana é rodeado por muitos mistérios e, há bastante tempo, desperta a curiosidade tanto leiga quanto científica. Os estudos com gêmeos vêm contribuindo para o entendimento de diversas áreas da biologia humana; porém, aspectos epidemiológicos e etiológicos relacionados aos nascimentos gemelares em si permanecem pouco elucidados. Para além de mera curiosidade, pesquisas nessa área podem ajudar a compreender mecanismos relacionados à reprodução em geral, além de serem importantes em um contexto de saúde pública, já que a gestação gemelar representa riscos adicionais à mãe e à prole. Em países industrializados observa-se um aumento acentuado nas taxas gemelares (TGs) que parece estar relacionado ao aumento da idade materna na primeira gravidez e tecnologias de Reprodução Medicamente Assistida (RMA). No Brasil, os aspectos geográficos e sociodemográficos dos nascimentos gemelares ainda não foram profundamente estudados. Assim, este estudo objetivou responder a três questões principais relacionadas aos nascimentos de gêmeos: “Quantos?” “Onde? e “Como?”, isto é, considerando aspectos epidemiológicos e etiológicos. Para o estudo epidemiológico, desenhamos um estudo de base de dados populacional e investigamos as TGs em duas dimensões: espacial e temporal. Para isso, utilizamos dados provenientes do Sistema de Informações sobre Nascidos Vivos (SINASC) e analisamos mais de 41 milhões de nascimentos que ocorreram em todos os 5.565 municípios brasileiros entre 2001 e 2014. Encontramos uma TG nacional média de 9,41 por 1.000 nascimentos e o modelo de análise de séries temporais revelou tendência de aumento global ao longo do período estudo, mas com notáveis diferenças regionais. De fato, resultados da “Análise de Cluster e Outlier” (Anselin Local Moran’s I) revelaram concentração de municípios com altas TGs em uma área que vai do sul do Nordeste brasileiro até o Rio Grande do Sul (Global Moran Index = 0.062, P < 0.001). Além disso, encontramos correlação positiva entre o Índice de Desenvolvimento Humano (IDH) local e as TGs em diferentes cenários, sugerindo que o IDH pode ser um importante indicador de RMA no Brasil. Nossas análises também revelaram aumento de 26.42% na TG entre as mulheres com mais de 44 anos durante o período estudado. A tendência de aumento temporal encontrada para algumas regiões do país está de acordo com o que é observado em outros países industrializados, enquanto que a análise geográfica revelou duas situações bem distintas dentro do Brasil. Por sua vez, os 9 estudos acerca da etiologia dos nascimentos de gêmeos foram concentrados em investigar polimorfismos de nucleotídeo único (SNPs) em mães de Cândido Godói (CG), uma pequena cidade do Sul do Brasil conhecida como a “Cidade dos Gêmeos”. Este título é devido à alta TG observada no município e à recorrência do traço nas famílias locais, com forte descendência europeia. Nós desenhamos um estudo caso-controle e genotipamos sete SNPs relacionados à foliculogênese (rs6166:C>T em FSHR, rs11031006:G>A próximo a FSHB, e rs17293443:T>C in SMAD3) ou a gestações de sucesso (rs1801131:T>G e rs1801133:G>A em MTHFR, rs2010963:C>G em VEGFA, e rs1800629:G>A em TNF) em 44 mães de gêmeos (casos) e 102 mães de filhos únicos (controles), todas residentes de CG. Para todos os SNPs, a distribuição das frequências alélicas e genotípicas foi similar entre casos e controles. Diferentes combinações de alelos de risco e análises haplotípicas também foram homogeneamente distribuídas entre ambos os grupos. Assim, estes resultados sugerem uma ausência de associação entre os nascimentos gemelares em CG e sete SNPs relacionados à foliculogênese ou a gestações de sucesso, mas é possível que outras variantes genéticas ligadas a ambos os processos possam estar envolvidas neste fenômeno que possui uma base genética subjacente. / The birth of twins in human species is surrounded by many mysteries and it has long aroused both lay and scientific curiosity. Studies with twins have contributed to the understanding of several areas of human biology; however, the epidemiological and etiological aspects related to twin births by themselves remain unclear. Beyond mere curiosity, research in this field may help us to understand the mechanisms related to reproduction in general, and it is important in a public health context since a twin pregnancy represents additional risks to the mother and offspring. Some countries have reported a striking increase in twinning rates (TRs), which seems to be related mainly to delayed childbearing and to Medically-Assisted Reproduction (MAR) technologies. In Brazil, the epidemiological scenario of twin births has not been studied while considering its territorial and sociodemographic magnitude. Therefore, this study aimed to answer three main questions related to twin births: "How many?", “Where” and "How?", that is, we investigated twinning in light of epidemiology and etiology. For the epidemiological study, we carried out a population-based study, investigating twin births in two dimensions: spatial and temporal. For that, we used data from Brazil’s Live Birth Information System (SINASC), and we analyzed over 41 million births that occurred in all 5,565 Brazilian municipalities between 2001 and 2014. We found an average TR of 9.41 per 1,000, and a first-order autoregressive model of time-series analysis revealed a global upward trend over time, but with important regional differences. In fact, a Cluster and Outlier Analysis (Anselin Local Moran’s I) was performed and identified clusters of high TR in an area stretching from the south of Brazil’s Northeast Region to the South Region (Global Moran Index = 0.062, P < 0.001). Furthermore, we found a positive correlation between the local Human Development Index (HDI) and TRs in different scenarios, suggesting that the HDI may be an important proxy indicator of MAR in Brazil. We also found a sharp increase (26.42%) in TR in women aged over 44 years. The upward temporal trend in TRs is in line with recent observations from other countries, whereas the spatial analysis revealed two very different realities within our country. In turn, studies on the etiology of twin births were focused on single nucleotide polymorphisms (SNPs) in mothers from Cândido Godói (CG), a small southern Brazilian city known as the "Twin’s Town”. This title is due to the high TR attributed to the municipality and to the recurrence of the twin trait through the 11 local families, who have a strong European descent. We performed a case-control study and genotyped seven SNPs related to folliculogenesis (rs6166:C>T in FSHR, rs11031006:G>A near FSHB, and rs17293443:T>C in SMAD3) and to a successful pregnancy (rs1801131:T>G and rs1801133:G>A in MTHFR, rs2010963:C>G in VEGFA, and rs1800629:G>A in TNF) in 44 mothers of twins (cases) and 102 mothers of singletons (controls), all of them from CG. For all SNPs, the distributions of the genotypic and allelic frequencies were similar between the cases and controls. Different combinations of risk alleles and haplotypic analyses were also homogeneously distributed between both groups. Thus, these results suggest a lack of association between twin births in CG and seven SNPs related to folliculogenesis or successful pregnancies, but it is possible that other genetic variants linked to both processes may be involved in this phenomenon, which has an underlying genetic basis.
166

Porovnání růstových schopností dvojčat u masného plemene Aberdeen angus / The comparison of growth performance of beef breed Aberdeen Angus twins

KOCÁBEK, Jan January 2014 (has links)
Aberdeen Angus (originated in Scotland) is the second most common beef breed in the Czech Republic due to its resistance to adverse climatic events, modesty, earliness, ease of calving, low birth weight of calves and good maternal instincts of cows. The main economic indicator of suckler cows rearing is the number of born and weaned calves. Production of twins is possible way to improve these indicators. The aim of this thesis was to compare the growth potential of twins of Aberdeen Angus beef breed with individuals who were born as singletons. The work is focused on comparing the weight at birth, in 120 and 210 days of age. Most twins in the population of Aberdeen Angus breed reared in the Czech Republic in 2009-2013 was born in 2012 - 9.44 % (270 pcs.), the least in 2013 - 6.67 % (184 pcs.). The incidence of twins by birth order increased from 1 to 3 birth order (78, resp. 130, resp. 131 pcs.) as further increasing order resulted into decline of twin's incidence. The difference in weight between twins and singletons at birth was 5.81 kg, in 120 days 28.32 kg and 37.32 kg 210 days (P 0.001). Differences within twins by sex were for bulls and heifers statistically significant (P 0.001). The relationship between weight at birth and calving ease was also investigated - in the case of twins relationship was not statistically significant (P> 0.05). The lowest mortality rate of twins was in 2013 - 8.70 % (16 pcs.), the highest mortality rate was in 2012 36.67 % (99 pcs.). Most twins were born in 2011 (179 pcs.), whereas least twins were born in 2010 (160 pcs.).
167

Genetic and Environmental Influences on Parenting, Sibling Conflict, and Childhood Sleep in Five-Year-Old Twins

January 2015 (has links)
abstract: Understanding how interpersonal relationships, such as parenting and sibling relationships, may contribute to early sleep development is important, as early sleep dysregulation has been shown to impact later sleep behavior (Sadeh & Anders, 1993), as well as cognitive and behavioral functioning (Gregory et al., 2006; Soffer-Dudek et al., 2011). In addition, twin studies provide an optimal opportunity to estimate genetic and environmental contributions to parenting, sibling relationships and child sleep, as they are influenced by both genetic and contextual factors. As such, the current thesis examined whether parental punitive discipline and sibling conflict were associated with child sleep duration, dysregulation and daytime sleepiness at 12 months, 30 months, and five years in a longitudinal sample of young twins recruited through birth records (Lemery-Chalfant et al., 2013). Mixed model regression analyses and quantitative behavioral genetic models (univariate and bivariate) were conducted to explore bidirectional relations and estimate genetic and environmental contributions to parental punitive punishment, sibling conflict and child sleep parameters. Sleep duration and dysregulation showed stability over time. Parental punitive discipline did not predict concurrent or future sleep parameters, nor were there bidirectional relations between punitive discipline and child sleep behaviors. Greater sibling conflict at five years was associated with shorter concurrent child sleep duration and greater daytime sleepiness, suggesting that sibling conflict may be a critical interpersonal stressor that negatively impacts child sleep. Shared environmental factors also accounted for the greatest proportion of the covariance between sibling conflict and sleep duration and daytime sleepiness at five years. These findings hold promise for sleep and sibling interaction interventions, including educating parents about fostering positive sibling relations and teaching caregivers to utilize specific parenting behaviors that may encourage better child sleep behaviors (e.g., establishing bedtime routines). Future studies should aim to understand the nuances of associations between family relationships (like punitive discipline and sibling conflict) and child sleep, as well as other explore person- and family-level factors, such as child negative emotions and parenting, that may influence associations between family relationships and child sleep. / Dissertation/Thesis / Masters Thesis Psychology 2015
168

Desenvolvimento neuropsicomotor de lactentes gemelares / Neuropsychomotor develpment of twins infants

Brusamarello, Sheila 01 March 2011 (has links)
Made available in DSpace on 2016-12-06T17:07:30Z (GMT). No. of bitstreams: 1 Sheila.pdf: 623853 bytes, checksum: 3a64d357656669b6eb0008a3ef85271f (MD5) Previous issue date: 2011-03-01 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Multiple pregnancy is associated to a wide range of complications for mother and children being considered of high risk for both. Besides higher morbidity and mortality rates, a number of factors, like low birth weight and prematurity, very common among twins, are also associated to development alterations. Based on that, this study seeks to understand the neuropsychomotor development alterations on twins infants and the characteristics that influence their development. The research, characterized as cross-sectional, was conducted on 20 pairs of twins infants with corrected chronological age between 12 and 24 months, born at and residents of the micro region of Florianópolis. Sample processing was intentional with pre-established exclusion criterias. In order to evaluate these children Brunet e Lèzine psychomotor development scale (1981) was the chosen intrument, which provides development ages and quotients for posture, oculomotor coordination, language and sociability. A questionnaire was also utilized to collect biopsychosocial data of each child. Statistical analysis of the data was descriptive when presenting data and inferential, through the Mann-Whitney test and Pearson s and Spearman s Correlation, when relationships between variables were necessary. Biopsychosocial questionnaire data revealed a sample constituted mainly by dizygotic pairs (75%), preterm (60%) and low birth weight infants (65%). Ninety percent of the sample were born surgically presenting satisfactory Apgar grade, although 26 remained hospitalized for more than 3 days, time that corresponds to the recovering period of mothers following c-sections. Investigation of social-economic factors demonstrated that 70% of mothers and 55% of fathers had at least completed high school, even though monthly per capita income did not exceed minimum wage for 60% of the families. Fifty-five percent of the children had their mothers as caregiver for at least half of the day. As for the evaluation of neuropsychomotor development, all infants achieved normality in all areas. Postural had the highest scores and oculomotor coordination the lowest. While verifying biopsychosocial characteristics influence on child s development was noticed that monozygotic twins have lower development than dizygotic in the posture, language and global development; birth weight and duration of ICU hospitalization showed significant correlations with posture, oculomotor coordination and sociability; gestational age and total duration of hospitalization were significantly correlated with the posture, oculomotor coordination, sociability and global development; parents educational level and income presented significant results n their correlations with the language. Despite so many factors that interfere their development, the twins evaluated in this study succeeded maintaining a normal development pattern, leading to the conclusion that, in general, development seems to be influenced by a number of factors, some cited on this paper, and many other that have not been verified yet. / A gestação múltipla está relacionada com diversas complicações tanto para a mãe quanto para seus filhos, sendo considerada de alto risco para ambos. Além de maior morbidade e mortalidade, diversos fatores como o baixo peso e a prematuridade, comuns em gêmeos, estão também relacionados com alterações no desenvolvimento. Frente a isso, esse estudo buscou conhecer como se comporta o desenvolvimento neuropsicomotor de lactentes gemelares e quais as características que nele influenciam. A pesquisa, caracterizada como transversal, foi realizada com 20 pares de lactentes gêmeos com idade cronológica corrigida entre 12 e 24 meses, nascidos e residentes na microrregião de Florianópolis. O processo de amostragem foi do tipo intencional, com critérios de exclusão pré-estabelecidos. As crianças foram avaliadas através da Escala de Desenvolvimento Psicomotor da Primeira Infância de Brunet e Lèzine (1981), que fornece Idades e Quocientes de Desenvolvimento nas áreas Postural, da Coordenação óculo-motriz, da Linguagem e da Sociabilidade. Foi também utilizado um formulário para coleta de dados biopsicossociais de cada criança. A análise estatística dos dados foi descritiva nos casos de apresentação dos dados obtidos, e inferencial, através dos testes de Mann-Whitney e Correlação de Pearson e Spearman, quando relações entre as variáveis se fizeram necessárias. Os principais resultados do formulário de dados biopsicossociais revelaram uma amostra constituída predominantemente por pares dizigóticos (75%), prematuros (60%) e com baixo peso ao nascer (65%). Ao nascerem, 90% por via cirúrgica, as crianças apresentaram boas notas de Apgar, porém 26 permaneceram hospitalizadas por mais de 3 dias, período que corresponderia à recuperação materna pós-cesareana. A investigação dos fatores socioeconômicos demonstrou que 70% das mães e 55% dos pais possuíam pelo menos o 2º grau completo, porém, a renda per capita mensal das famílias não passou de um salário mínimo para 60% delas. Verificou-se ainda que 55% das crianças contavam com a mãe como cuidadora por, pelo menos, meio período. Quanto à avaliação do desenvolvimento neuropsicomotor, todos os lactentes alcançaram a normalidade em todas as áreas, sendo a área Postural a que apresentou as médias mais altas, e a Coordenação óculo-motriz a área com as médias mais baixas. Ao verificar a influência das características biopsicossociais sobre o desenvolvimento, observou-se que os monozigóticos possuem desenvolvimento inferior aos dizigóticos na Postura, Linguagem e Desenvolvimento Global; o peso ao nascer e o tempo de internação em UTI mostraram correlações significativas com a Postura, Coordenação óculo-motriz e Sociabilidade; a idade gestacional e o tempo total de internação hospitalar foram significativamente correlacionados com a Postura, a Coordenação óculo-motriz, a Sociabilidade e o Desenvolvimento Global; e a escolaridade dos pais e a renda revelaram significância em suas correlações com a Linguagem. Conclui-se que apesar de tantos fatores intervenientes, os gemelares conseguiram manter um padrão de desenvolvimento normal, mostrando que, de um modo geral, o desenvolvimento parece ser influenciado por uma somatória de fatores, alguns dos quais abordados nesse trabalho, porém com muitos outros que não foram verificados.
169

"Twin Peaks" : investigando mistérios sobre a gemelaridade no Brasil

Santos, Augusto César Cardoso dos January 2018 (has links)
O nascimento de gêmeos na espécie humana é rodeado por muitos mistérios e, há bastante tempo, desperta a curiosidade tanto leiga quanto científica. Os estudos com gêmeos vêm contribuindo para o entendimento de diversas áreas da biologia humana; porém, aspectos epidemiológicos e etiológicos relacionados aos nascimentos gemelares em si permanecem pouco elucidados. Para além de mera curiosidade, pesquisas nessa área podem ajudar a compreender mecanismos relacionados à reprodução em geral, além de serem importantes em um contexto de saúde pública, já que a gestação gemelar representa riscos adicionais à mãe e à prole. Em países industrializados observa-se um aumento acentuado nas taxas gemelares (TGs) que parece estar relacionado ao aumento da idade materna na primeira gravidez e tecnologias de Reprodução Medicamente Assistida (RMA). No Brasil, os aspectos geográficos e sociodemográficos dos nascimentos gemelares ainda não foram profundamente estudados. Assim, este estudo objetivou responder a três questões principais relacionadas aos nascimentos de gêmeos: “Quantos?” “Onde? e “Como?”, isto é, considerando aspectos epidemiológicos e etiológicos. Para o estudo epidemiológico, desenhamos um estudo de base de dados populacional e investigamos as TGs em duas dimensões: espacial e temporal. Para isso, utilizamos dados provenientes do Sistema de Informações sobre Nascidos Vivos (SINASC) e analisamos mais de 41 milhões de nascimentos que ocorreram em todos os 5.565 municípios brasileiros entre 2001 e 2014. Encontramos uma TG nacional média de 9,41 por 1.000 nascimentos e o modelo de análise de séries temporais revelou tendência de aumento global ao longo do período estudo, mas com notáveis diferenças regionais. De fato, resultados da “Análise de Cluster e Outlier” (Anselin Local Moran’s I) revelaram concentração de municípios com altas TGs em uma área que vai do sul do Nordeste brasileiro até o Rio Grande do Sul (Global Moran Index = 0.062, P < 0.001). Além disso, encontramos correlação positiva entre o Índice de Desenvolvimento Humano (IDH) local e as TGs em diferentes cenários, sugerindo que o IDH pode ser um importante indicador de RMA no Brasil. Nossas análises também revelaram aumento de 26.42% na TG entre as mulheres com mais de 44 anos durante o período estudado. A tendência de aumento temporal encontrada para algumas regiões do país está de acordo com o que é observado em outros países industrializados, enquanto que a análise geográfica revelou duas situações bem distintas dentro do Brasil. Por sua vez, os 9 estudos acerca da etiologia dos nascimentos de gêmeos foram concentrados em investigar polimorfismos de nucleotídeo único (SNPs) em mães de Cândido Godói (CG), uma pequena cidade do Sul do Brasil conhecida como a “Cidade dos Gêmeos”. Este título é devido à alta TG observada no município e à recorrência do traço nas famílias locais, com forte descendência europeia. Nós desenhamos um estudo caso-controle e genotipamos sete SNPs relacionados à foliculogênese (rs6166:C>T em FSHR, rs11031006:G>A próximo a FSHB, e rs17293443:T>C in SMAD3) ou a gestações de sucesso (rs1801131:T>G e rs1801133:G>A em MTHFR, rs2010963:C>G em VEGFA, e rs1800629:G>A em TNF) em 44 mães de gêmeos (casos) e 102 mães de filhos únicos (controles), todas residentes de CG. Para todos os SNPs, a distribuição das frequências alélicas e genotípicas foi similar entre casos e controles. Diferentes combinações de alelos de risco e análises haplotípicas também foram homogeneamente distribuídas entre ambos os grupos. Assim, estes resultados sugerem uma ausência de associação entre os nascimentos gemelares em CG e sete SNPs relacionados à foliculogênese ou a gestações de sucesso, mas é possível que outras variantes genéticas ligadas a ambos os processos possam estar envolvidas neste fenômeno que possui uma base genética subjacente. / The birth of twins in human species is surrounded by many mysteries and it has long aroused both lay and scientific curiosity. Studies with twins have contributed to the understanding of several areas of human biology; however, the epidemiological and etiological aspects related to twin births by themselves remain unclear. Beyond mere curiosity, research in this field may help us to understand the mechanisms related to reproduction in general, and it is important in a public health context since a twin pregnancy represents additional risks to the mother and offspring. Some countries have reported a striking increase in twinning rates (TRs), which seems to be related mainly to delayed childbearing and to Medically-Assisted Reproduction (MAR) technologies. In Brazil, the epidemiological scenario of twin births has not been studied while considering its territorial and sociodemographic magnitude. Therefore, this study aimed to answer three main questions related to twin births: "How many?", “Where” and "How?", that is, we investigated twinning in light of epidemiology and etiology. For the epidemiological study, we carried out a population-based study, investigating twin births in two dimensions: spatial and temporal. For that, we used data from Brazil’s Live Birth Information System (SINASC), and we analyzed over 41 million births that occurred in all 5,565 Brazilian municipalities between 2001 and 2014. We found an average TR of 9.41 per 1,000, and a first-order autoregressive model of time-series analysis revealed a global upward trend over time, but with important regional differences. In fact, a Cluster and Outlier Analysis (Anselin Local Moran’s I) was performed and identified clusters of high TR in an area stretching from the south of Brazil’s Northeast Region to the South Region (Global Moran Index = 0.062, P < 0.001). Furthermore, we found a positive correlation between the local Human Development Index (HDI) and TRs in different scenarios, suggesting that the HDI may be an important proxy indicator of MAR in Brazil. We also found a sharp increase (26.42%) in TR in women aged over 44 years. The upward temporal trend in TRs is in line with recent observations from other countries, whereas the spatial analysis revealed two very different realities within our country. In turn, studies on the etiology of twin births were focused on single nucleotide polymorphisms (SNPs) in mothers from Cândido Godói (CG), a small southern Brazilian city known as the "Twin’s Town”. This title is due to the high TR attributed to the municipality and to the recurrence of the twin trait through the 11 local families, who have a strong European descent. We performed a case-control study and genotyped seven SNPs related to folliculogenesis (rs6166:C>T in FSHR, rs11031006:G>A near FSHB, and rs17293443:T>C in SMAD3) and to a successful pregnancy (rs1801131:T>G and rs1801133:G>A in MTHFR, rs2010963:C>G in VEGFA, and rs1800629:G>A in TNF) in 44 mothers of twins (cases) and 102 mothers of singletons (controls), all of them from CG. For all SNPs, the distributions of the genotypic and allelic frequencies were similar between the cases and controls. Different combinations of risk alleles and haplotypic analyses were also homogeneously distributed between both groups. Thus, these results suggest a lack of association between twin births in CG and seven SNPs related to folliculogenesis or successful pregnancies, but it is possible that other genetic variants linked to both processes may be involved in this phenomenon, which has an underlying genetic basis.
170

Ombo apyka. conception and Birth among Mbyá guaraní / Tomar asiento. La concepción y el nacimiento mbyá guaraní

Enriz, Noelia 25 September 2017 (has links)
El presente trabajo examina las prácticas relacionadas con la gestación, el nacimiento, la nominación y circulación de los niños entre la población mbyá guaraní de Argentina a fin de explorar el lugar social de los niños y la producción de su persona e identidad. Empiezo argumentando que lo religioso ocupa un lugar central en la constitución de las personas. Luego, examino algunas situaciones no ordinarias y disruptivas como el nacimiento de mellizos. Ellas permiten mostrar la manera como se asienta la persona mbyá en el grupo. Finalmente, abordo las excepciones a las prácticas tradicionales, pues la manera de apartarse de ellas muestra que en la cosmovisión mbyá se ha generado nuevos mecanismos de inclusión de los niños. / This paper examines the practices related to pregnancy, birth, naming, and circulation of children in order to approach to their socially constructed place among the Argentine’s Mbyá Guaraní. I begin by arguing that the religious values are central to their production as people. Then I examine some non-ordinary and disruptive situations, such as the conception and birth of twins, to show how a Mbyá person settles down in the group. Finally, I consider the exceptions to the traditional ways for they show that in the Mbyá worldview, new mechanisms of inclusion of children have been generated.

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