964 resultados para Stiekna, Konrad.
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Thesis (doctoral)--Universitat Leipzig.
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Thesis (doctoral)--Kaiser-Wilhelms-Universitat Strassburg.
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Thesis (doctoral)--Kaiser Wilhelms-Unaiversitat Strassburg.
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Thesis (doctoral)--Kaiser-Wilhelms-Universitat Strassburg.
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Thesis (doctoral)--Friedrich-Wilhelms-Universitat zu Berlin.
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herausgegeben von Gottlieb Ernst
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Im Grubenfeld "Konrad" der Salzgitter-Erzbergbau AG bei Salzgitter-Bleckenstedt wurde ein 62 m mächtiges, von den Ornaten-Schichten (Mittel-Callovium, coronaten-Zone) bis an die Basis des Mittleren Korallenoolith (Mittel-Oxfordium, plicatilis-Zone oder Ober-Oxfordium, cautisnigrae-Zone) reichendes Profil aufgenommen und untersucht. Die Mächtigkeit der Heersumer Schichten beträgt nur 1,5 m, die des Unteren Korallenoolith ca. 60 m. Im Gegensatz zum nördlichen Teil des Gifhorner Troges (SEITZ 1950) ist die Mächtigkeit der Heersumer Schichten im südlichen Teil also erheblich geringer. Der Untere Korallenoolith ist in beiden Vorkommen etwa gleichmächtig entwickelt. Die Schichtlücke zwischen Mittel-Callovium und Unter-Oxfor- dium, die im untersuchten Profil nachgewiesen werden konnte, tritt auch am nördlichen Harzrand in der Grube "Hansa" (DENG- LER 1954) und im Wiehengebirge (LANGE 1971) auf. Offensichtlich ist sie jedoch nur lokal entwickelt, denn im Hildesheimer Jurazug (VINKEN 1974, 1975), im nördlichen Teil des Gifhorner Troges (SEITZ 1950) und am nördlichen Harzrand in unmittelbarer Nähe der Grube "Hansa" (s.o.) liegen lückenlose Profile vor. Daß diese Schichtlücken auch im Südteil des Gifhorner Troges auftreten, spricht für ein späteres Einsetzen der Trogtendenz in diesem Gebiet. Die untersuchten Schichten stimmen in ihren wesentlichen faziellen und petrographischen Merkmalen mit benachbarten Vorkommen überein. Die Zyklen im Unteren Korallenoolith werden als Ergebnis sich ablösender Transgressions- und Regressionsphasen gedeutet.
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Estimou-se a prevalência de dor nos dentes e gengivas e fatores associados em adolescentes brasileiros de 15 a 19 anos de idade. Foram utilizadas informações de 16.126 adolescentes participantes do levantamento epidemiológico nacional de saúde bucal - SB Brasil 2002-2003. O desfecho foi o relato de dor nos dentes e gengivas nos últimos seis meses. As variáveis exploratórias foram: renda per capita, escolaridade, condição de estudo, sexo, cor da pele, idade, localização geográfica da residência, tipo de serviço odontológico utilizado pela última vez, tempo decorrido da última consulta odontológica, índice CPO-D e seus componentes, cálculo dentário e o índice de estética dental. Foram realizadas análises brutas e múltiplas utilizando a regressão de Poisson. A prevalência da dor de dentes e gengivas foi de 35,6% (IC95%: 34,8-36,4). A prevalência de dor foi maior nas meninas, naqueles pertencentes a famílias com baixa renda per capita, nos não estudantes e estudantes de escola pública e naqueles com baixa escolaridade para a idade. Indivíduos que apresentaram altos níveis de cárie e cálculo dentário também apresentaram maiores prevalências do desfecho. A dor nos dentes e gengivas em adolescentes pode ser considerada um problema relevante em saúde pública sugerindo a necessidade de ações preventivas e de promoção da saúde.
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Background: A cross-cultural, randomized study was proposed to observe the effects of a school-based intervention designed to promote physical activity and healthy eating among high school students in 2 cities from different regions in Brazil: Recife and Florianopolis. The objective of this article is to describe the methodology and subjects enrolled in the project. Methods: Ten schools from each region were matched and randomized into intervention and control conditions. A questionnaire and anthropometry were used to collect data in the first and last month of the 2006 school year. The sample (n = 2155 at baseline; 55.7% females; 49.1% in the experimental group) included students 15 to 24 years, attending nighttime classes. The intervention focused on simple environmental/organizational changes, diet and physical activity education, and personnel training. Results: The central aspects of the intervention have been implemented in all 10 intervention schools. Problems during the intervention included teachers' strikes in both sites and lack of involvement of the canteen owners in schools. Conclusions: The Saude no Boa study provides evidence that public high schools in Brazil represent an important environment for health promotion. Its design and simple measurements increase the chances of it being sustained and disseminated to similar schools in Brazil.
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Background and Purpose - This study was undertaken to better clarify the risks associated with cigarette smoking and subarachnoid hemorrhage (SAH). Methods - The study included 432 incident cases of SAH frequency matched to 473 community SAH-free controls to determine dose-dependent associations of active and passive smoking ( at home) and smoking cessation with SAH. Results - Compared with never smokers not exposed to passive smoking, the adjusted odds ratio for SAH among current smokers was 5.0 (95% confidence interval [CI], 3.1 to 8.1); for past smokers, 1.2 ( 95% CI, 0.8 to 2.0); and for passive smokers, 0.9 ( 95% CI, 0.6 to 1.5). Current and lifetime exposures showed a clear dose-dependent effect, and risks appeared more prominent in women and for aneurysmal SAH. Approximately 1 in 3 cases of SAH could be attributed to current smoking, but risks decline quickly after smoking cessation, even among heavy smokers. Conclusions - A strong positive association was found between cigarette smoking and SAH, especially for aneurysmal SAH and women, which is virtually eliminated within a few years of smoking cessation. Large opportunities exist for preventing SAH through smoking avoidance and cessation programs.