The aim of the present investigation is to increase theunderstanding of the role played by the solvent in inhibitingor enhancing crystal growth. Drowning-out crystallizationexperiments has been performed by the controlled addition ofwater or ethanol water mixtures to a saturated solution ofbenzoic acid in ethanol-water mixtures. Crystal habitcontrolling factors have been identified.Seededcrystallization experiments have been carried out to evaluatethe effect of solvent composition on crystal habit at constantsupersaturation. The solubility of benzoic acid inethanol-water mixtures at the working temperatures has beendetermined. Electro-zone sensing determinations and microscopicmeasurements are used to characterize the final crystallineproduct. It has been found that the shape of the benzoic acidcrystals grown from ethanol-water solutions ranges from needlesto platelets. Platy particles possess a predominant basal plane(001), bound by (010) and (100) faces, while needles aredeveloped along the b-axis. Long needle-shaped particles havebeen produced at low initial bulk concentration and highethanol concentration in the feed. Small platelets are obtainedat high initial bulk concentrations and high waterconcentration in the feed. The effect of solvent composition on the growth rate hasbeen evaluated at constant supersaturation. Seed crystals arecharacterized by image analysis measurement both before andafter each experiment. Length and width dimensions have beenmeasured on the particle silhouette. The growth rate, thesolid-liquid interfacial energy and the surface entropy factorfor the (010) faces (length dimension) and (100) faces (widthdimension) have been estimated. The interfacial energy andsurface entropy factor decreases in the direction of increasingethanol concentration due to increasing solubility. The results suggest that at low ethanol concentration(xEtOH&lt;60%) growth proceeds by screw dislocation mechanism,and adsorption of ethanol molecules may reduce the growth rate.As the ethanol concentration increases above a critical value(xEtOH ≥60%), the growth mechanism shifts to surfacenucleation and the growth rate increases with increasingethanol concentration. It has been suggested that the observedeffect of the solvent composition on crystal habit is theresult of two conflicting effects here referred as the kineticand interfacial energy effects. High interactions of the pairethanol-benzoic acid seem to be responsible of the growthretardation (kinetic effect) exerted by the solvent. On theother hand, increased ethanol concentration leads to reduceinterfacial energy and increasing surface nucleation whichmight contribute to enhance growth kinetics. <b>Keywords:</b>drowning-out crystallisation, solventcomposition, benzoic acid, solubility, crystal growth,interfacial energy, surface entropy factor, growth mechanism,crystal shape distribution.

Because of the difficulties in concluding whether a person has drowned or not, information that could be relevant for postmortal diagnosis of drowning was studied. With postmortal CT images lung volume, mean attenuation, anterior-posterior difference, lung density profile and amount of water within the lungs were investigated. The report also evaluates three examples of software that calculates lung volume from postmortal CT images: Siemens’ Syngo Pulmo CT, Siemens‘ Volume Evaluation and GE Medical Systems’ Volume Viewer. The method used at autopsy was also studied. The repeatability and validity were tested and sources of errors identified. Repeatability and validity for the three tested types of software were acceptable, while the method used at autopsy had to be improved. The study also showed that lung volume related to length, anterior-posterior difference and lung density profile seemed to vary between drowned and other deceased. These measures might conclude whether a person has drowned.

<p>The aim of the present investigation is to increase theunderstanding of the role played by the solvent in inhibitingor enhancing crystal growth. Drowning-out crystallizationexperiments has been performed by the controlled addition ofwater or ethanol water mixtures to a saturated solution ofbenzoic acid in ethanol-water mixtures. Crystal habitcontrolling factors have been identified.Seededcrystallization experiments have been carried out to evaluatethe effect of solvent composition on crystal habit at constantsupersaturation. The solubility of benzoic acid inethanol-water mixtures at the working temperatures has beendetermined.</p><p>Electro-zone sensing determinations and microscopicmeasurements are used to characterize the final crystallineproduct. It has been found that the shape of the benzoic acidcrystals grown from ethanol-water solutions ranges from needlesto platelets. Platy particles possess a predominant basal plane(001), bound by (010) and (100) faces, while needles aredeveloped along the b-axis. Long needle-shaped particles havebeen produced at low initial bulk concentration and highethanol concentration in the feed. Small platelets are obtainedat high initial bulk concentrations and high waterconcentration in the feed.</p><p>The effect of solvent composition on the growth rate hasbeen evaluated at constant supersaturation. Seed crystals arecharacterized by image analysis measurement both before andafter each experiment. Length and width dimensions have beenmeasured on the particle silhouette. The growth rate, thesolid-liquid interfacial energy and the surface entropy factorfor the (010) faces (length dimension) and (100) faces (widthdimension) have been estimated. The interfacial energy andsurface entropy factor decreases in the direction of increasingethanol concentration due to increasing solubility.</p><p>The results suggest that at low ethanol concentration(xEtOH<60%) growth proceeds by screw dislocation mechanism,and adsorption of ethanol molecules may reduce the growth rate.As the ethanol concentration increases above a critical value(xEtOH ≥60%), the growth mechanism shifts to surfacenucleation and the growth rate increases with increasingethanol concentration. It has been suggested that the observedeffect of the solvent composition on crystal habit is theresult of two conflicting effects here referred as the kineticand interfacial energy effects. High interactions of the pairethanol-benzoic acid seem to be responsible of the growthretardation (kinetic effect) exerted by the solvent. On theother hand, increased ethanol concentration leads to reduceinterfacial energy and increasing surface nucleation whichmight contribute to enhance growth kinetics.</p><p><b>Keywords:</b>drowning-out crystallisation, solventcomposition, benzoic acid, solubility, crystal growth,interfacial energy, surface entropy factor, growth mechanism,crystal shape distribution.</p>

Diss. (sammanfattning) Stockholm : Karol. inst., 2005. / Härtill 4 uppsatser.

Os recursos empregados para identificação humana variam desde antropologia física até o estudo dos ácidos nucléicos. Exemplos recentes como o Tsunami, na Tailândia e o Katrina, em Nova Orleans reforçam a necessidade de domínio de técnicas de extração do DNA no processo de identificação de corpos esqueletizados ou em estado de decomposição avançado que estiveram sob influência de ambiente aquoso. Neste sentido, o objetivo deste trabalho foi conhecer a casuística de situações que envolvam casos de afogamento, através dos registros do Instituto Médico-Legal Nina Rodrigues na cidade de Salvador - Bahia, além de, verificar o potencial de recuperação do DNA obtido de dentes humanos, imersos na água doce e salgada, por 1 mês. Foram utilizados 40 dentes sendo o DNA extraído pelo método orgânico e amplificado por PCR utilizando a amelogenina como iniciador. A eletroforese ocorreu inicialmente em gel de agarose e posteriormente em gel de poliacrilamida. Em seguida, foram selecionadas 10 amostras para amplificação através do sistema Powerplex® 16 System, sendo a eletroforese realizada em seqüenciador automático. No levantamento, observou-se 346 óbitos por afogamento, a maioria destes na água salgada (51,73%), predominando vítimas do sexo masculino (86,13%), na faixa etária de 18-35 anos (37,94%). Os cirurgiõesdentistas atuaram na identificação de 14,74% das vítimas. A recuperação do DNA foi possível em 37,5% das amostras (45% provenientes de dentes imersos em água doce e 30% em água salgada). A análise em gel de poliacrilamida de 27 amostras (15 dentes e 12 de células da mucosa oral) provenientes de 12 participantes, que tiveram amplificação positiva no gel de agarose, possibilitou a identificação correta do sexo em 83,3% dos casos (10 indivíduos). Entretanto, foi visualizada a perda de alelos em amostras de dois participantes, prejudicando a determinação do sexo. No Powerplex® foi possível a obtenção de pelo menos uma região do DNA em todas as amostras, mesmo naquelas que tiveram amplificação negativa no gel de agarose. Desta forma, a exposição dos dentes à água interferiu diretamente na recuperação do DNA. A investigação do sexo pela amelogenina mostrou-se efetiva, mas como toda técnica necessita de uma interpretação criteriosa dos resultados. Além disso, o sistema multiplex permitiu a obtenção de resultados mais fidedignos em função do seu alto poder discriminativo. O presente estudo proporcionou a obtenção de conhecimentos técnicos e científicos sobre o emprego da biologia molecular na investigação do sexo, demonstrando que apesar de ser uma técnica extremamente sensível às condições ambientais e outros fatores, trata-se de um método eficiente nos processos de identificação humana. Entretanto, a análise de DNA, mesmo sendo uma poderosa ferramenta, não é condição sine qua non em estudos forenses, devendo ser considerada dentro de um conjunto de variadas evidências. / The resources used for human identification vary since physical anthropology until nucleic acid study. Recent examples as the Tsunami, in Thailand and the Katrina, in New Orleans strengthen the necessity of domain of DNA extraction techniques in the skeleton bodies identification process in advanced decomposition state that had been under watery environment influence. In this direction, the objective of this work was to know the casuistry of situations that involve drowning cases, through the registers of Nina Rodrigues Forensic Medicine Institute in Salvador city - Bahia, beyond, to verify the recovery potential of DNA in human teeth immersed in the water for 1 month. 40 teeth had been used, being the DNA extracted for the organic method and amplified by PCR using the amelogenin as initiator. The electrophoresis occurred initially in agarose gel and later in polyacrylamide gel. After that, 10 samples was select for amplification through the Powerplex® 16 System, being the electrophoresis carried in the automated sequence data. In the survey, was observed 346 deaths for drowning, the majority of these in the saline water (51,73%), predominating victims of the masculine sex (86,13%), with age between 18-35 years (37,94%). The surgeon-dentists had acted in the identification of 14,74% of the victims. The DNA recovery was possible in 37,5% of the samples (45% comimg teeth immersed in fresh water and 30% in saline water). The analysis in polyacrylamide gel of 27 samples (15 teeth and 12 of oral mucous cells) proceeding from 12 participants, who had positive amplification in the agarose gel, made possible the correct sex identification in 83,3% of the cases (10 individuals). However, the allelic loss in samples of two participants was visualized, harming the sex determination. In the Powerplex® it was possible obtaining at least one region of the DNA in all the samples, exactly in that they had negative amplification in the agarose gel. Of this form, the exposition of teeth to the water intervened directly with the DNA recuperation. The sex identification by amelogenin revealed effective, but as all technique needs one sensible interpretation of the results. Moreover, the multiplex system allowed the obtaining of trustworther results in function of your high discriminate power. The present study provided the obtaining of technician and scientific knowledge about use of molecular biology in the sex investigation, demonstrating that although to be one extremely sensible technique to the ambient conditions and other factors, is one efficient method in the human identification processes. However, the DNA analysis, exactly being one powerful tool, is not indispensable condition in forensic studies, having to be considered inside of one set of varied evidences.

Injuries are one of the leading causes of death for individuals in Canada. Most injuries are predictable and preventable events that may be reduced by health promotion and injury prevention strategies. In particular, boating fatalities are a leading cause of injury death for men, particularly Aboriginal men, in northern Canada. Despite decades of water safety campaigns, Aboriginal men remain overrepresented in boating fatality statistics. Elevated rates of boating fatalities for Aboriginal men in northern Canada indicate that current water safety messages and initiatives may not be reaching those most vulnerable to boating incidents. My thesis, which is written in the publishable paper format and is comprised of two papers, investigates Aboriginal men’s boating incidents in Inuvik, Northwest Territories, Canada. In paper one, I use a community-based participatory research methodology informed by postcolonial feminist theory to investigate the risk factors that Aboriginal male residents identified as contributing to boating incidents in Inuvik, Northwest Territories. Together, we found that sex and gender, age, place, and lack of boating safety education are the most prominent risk factors for boating incidents. In paper two, I argue that community members are key holders of local knowledge and their expertise should thus be drawn upon by academic researchers and health programmers for the co-creation of injury prevention programs. In it, I provide an overview of the process that led to the co-creation of a boating education poster campaign in Inuvik. Together, the two papers in this thesis demonstrate that community-based strategies should be employed to address health inequities in boating incidents faced by Aboriginal men in the Northwest Territories.

Work name: The swimming literacy of women in term of self rescue Aim of work: To acquire and analyze data about the level of the swimming literacy and self rescue skills of women aged 18 - 72 years, whether they can handle and use them. Method: Literature search, creation of the questionnaire, implementation survey, data analysis and graphical presentation of results. Results: The analysis of the swimming literacy and self rescue skills of women. Key words: literacy, physical literacy, swimming literacy, self rescue, drowning

Behavioral skills training (BST) and in situ training (IST) have been evaluated as methods to teach different safety skills to individuals with developmental disabilities. Research on BST has examined topics such as gun safety, abduction prevention, poison avoidance, and sexual abuse prevention. A large safety issue that is missing from the literature is drowning prevention and water safety skills. Drowning is one of the most prevalent issues facing facing children with Autism Spectrum Disorder (ASD), particularly those who elope from their homes or caregivers. The current study aimed the effectiveness of using BST+IST to teach three water safety skills to three children with ASD. The intial form of intervention was BST with total task presentation of the skill, using verbal instruction, modeling, rehearsal, and feedback. If this intervention did not result in an increase in performance, the skill was broken down into individual component presentation, in which each component of the skill was taught using the same procedures. Results from the current study showed that BST+IST was effective in teaching all skills to all participants.

Drowning is a frequent mode of death for female literary characters because of the strong symbolic relationship between female sexuality and water. Drowning has long been a punishment for sexually transgressive women in literature. In the introduction, Chapter 1, I describe the drowning paradigm and analyze drowning scenes in several pre-twentieth century works to establish the tradition which twentieth-century women writers begin to transcend. In Chapter 2, I discuss three of Kate Chopin's works which include drownings, demonstrating her transition from traditional drowning themes in At Fault and “Desiree's Baby” to the drowning in The Awakening, which prefigures the survival of protagonists in later works. I discuss one of these in Chapter 3: Zora Neale Hurston's Their Eyes Were Watching God. Although Janie must rely on her husband to save her from the flood, she survives, though her husband does not. In Chapter 4, I discuss two stories by Eudora Welty, “Moon Lake” and “The Wide Net.” In “Moon Lake,” Easter nearly drowns as a corollary to her adolescent sexual awakening. Although her resuscitation is a brutal simulation of a rape, Easter survives. “The Wide Net” is a comic story that winks at the drowning woman tradition, showing a young bride who pretends to drown in order to recapture the affections of her husband. Chapter 5 analyzes a set of works by Margaret Atwood. Lady Oracle includes another faked drowning, while “The Whirlpool Rapids” and “Walking on Water” feature a protagonist who feels invulnerable after her near-drowning. The Blind Assassin includes substantial drowning imagery. Chapter 6 discusses current trends in near-drowning fiction, focusing on the river rafting adventure stories of Pam Houston.

Drowning and near drowning is a significant problem nationwide and in San Bernardino County. Drowning in and around the home is the leading cause of accidental death of children under 5 years of age. In the United States, drowning is cited as the second most common cause of death for adolescents. This project was undertaken to help establish a funding source to develop a drowning prevention program in San Bernardino County. A request for assistance was obtained from the California Center for Childhood Injury Prevention and the California Kids' Plates Program.