999 resultados para 515.1 - Topologia
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The work carried out by the physical oceanography group on POLARSTERN Leg ANT-V/3 concentrated on four major topics: A. A large scale survey of the eastern boundary between the Weddell gyre and the open ocean. On the way to the coastal polynya in early October 12 CTD stations were carried out between 54°30'S, 6°E and 70°30'S 8°W. Another set of 16 stations was obtained in early December on the way back north. During this transsect three current meter moorings were recovered at Maud Rise. The path between the current meter arrays was used to run an additional section to the NNE across the top of Maud Rise. B. A large scale survey of the Antarctic Coastal Current along the eastern shelf area. To obtain the water mass characteristics along the eastern Weddell shelf 36 CTD stations were carried out between Atka Bay and the Filchner Trench. Most of the stations were located on the shelf. Cross shelf sections were obtained both near Drescher Inlet and off Halley Bay, in the divergence area of the Coastal Current where the continental slope turns to the west and south of Vestkapp at Neptune's Point. A longshore section over 120 km was run north of Vestkapp. C. A mesoscale survey of the Antarctic Coastal Current off Drescher Inlet. The experimental work consisted of 37 CTD-stations and direct current measurements. The CTD-profiles were grouped into seven sections perpendicular to the coast line off Drescher Inlet extending once over 70 km but normally over 35 km. The profile depth ranged from 300 m on one section to the complete water column at two sections. Most sections consist of five stations providing highest resolution over the upper continental slope with offshore increasing spacing. The stations were chosen to represent the shelf (450 m), the shelf break (800 m), the upper slope (1600 m), the lower slope (2400 m) and the transition to the abyssal plain (3400 m). Rough topography and difficult ice conditions made it impossible to meet those requirements in all cases. D. A small scale survey of the hydrographic conditions under the sea ice. The motivation for these studies arose during the cruise. Consequently a suitable Instrumentation had to be developed at sea. This was done with a NB-Smart CTD which was inserted on an L-shaped lever through a hole in the ice. However, various water intrusions into the instrument resulted in the failure of this technique. In consequence a special lever system was built to position a NB Mark 3b weighing about 40 kg below the ice. Twenty four profiles were obtained reaching from the bottom of the ice down to 2 m below the ice surface with a maximum distance of 1 m from the entry hole. As the conductivity sensor was influenced by nearby ice platelets, salinity samples where drawn to check the sensor.
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150 Briefe zwischen Theodor W. Adorno und Gretel Adorno und Max Horkheimer; 1 Brief (Abschrift, Kopie) von Ernst Bloch an Theodor W. Adorno, 14.09.1963; 1 Brief von Leo Löwenthal an Theodor W. Adorno, 06.09.1963; 1 Brief von Theodor W. Adorno an Leo Löwenthal, 18.11.1965; 1 Brief von Ilse Völker and Theodor W. Adorno, 14.06.1963; 1 Brief von Ulrich Beyer an Max Horkeimer, 15.04.1963; 1 Brief von Ulrich Beyer an Dr. Lepsius, 15.04.1963; 1 Brief von Alice Maier an Theodor W. Adorno, 14.02.1963; 2 Briefe von Theodor W. Adorno an Alice Maier, 1963 - 1964; 1 Brief von Felix Weil an Theodor W. Adorno, 11.04.1963; 1 Brief von Regina Pelzer an Theodor W. Adorno, [1963]; 1 Brief von Theodor W. Adorno an Schröder, [1963]; 1 Brief von der Europäischen Verlagsanstalt an Theodor W. Adorno, 17.11.1964; 1 Brief von Ruth Nanda Ashen an Theodor W. Adorno, 21.09.1964;
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133 Briefe zwischen Max Horkheimer und Leo Löwenthal; 1 Brief von Leo Löwenthal an Paul Guggenheim, [1941];
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Annual precipitation for the last 2,500 years was reconstructed for northeastern Qinghai from living and archaeological juniper trees. A dominant feature of the precipitation of this area is a high degree of variability in mean rainfall at annual, decadal, and centennial scales, with many wet and dry periods that are corroborated by other paleoclimatic indicators. Reconstructed values of annual precipitation vary mostly from 100 to 300 mm and thus are no different from the modern instrumental record in Dulan. However, relatively dry years with below-average precipitation occurred more frequently in the past than in the present. Periods of relatively dry years occurred during 74-25 BC, AD 51-375, 426-500, 526-575, 626-700, 1100-1225, 1251-1325, 1451-1525, 1651-1750 and 1801-1825. Periods with a relatively wet climate occurred during AD 376-425, 576-625, 951-1050, 1351-1375, 1551-1600 and the present. This variability is probably related to latitudinal positions of winter frontal storms. Another key feature of precipitation in this area is an apparently direct relationship between interannual variability in rainfall with temperature, whereby increased warming in the future might lead to increased flooding and droughts. Such increased climatic variability might then impact human societies of the area, much as the climate has done for the past 2,500 years.
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Objective: The present study evaluated the relationship between periodontal disease and its clinical variables in Brazilian non-diabetic pregnant women (C), gestational diabetes mellitus (GDM), or type 1 diabetes mellitus (T1DM). Subjects and methods: A periodontal exam was performed in one hundred and sixty-one pregnant women (GDM:80; T1DM:31; C:50) by a single-blinded calibrated examiner who recorded plaque index (PI), gingival index (GI), bleeding index (BI), gingival margin location (GM), probing depth (PD), clinical attachment level (CAL), bleeding on probing (BOP), and tooth mobility index (MI). The medical variables were age, pregestational body mass index (pre-BMI), fasting plasma glucose (FPG), and glycated hemoglobin (HbA(1c)). Results: The GI, GM, PD, CAL, BOP, and MI were significantly higher (P < 0.01) among GDM and T1DM than for C. The PI was higher in GDM and similar between C and T1DM. The Adjusted Final Model for medical variables to evaluate the effects of groups on periodontal parameters confirmed these results. Conclusions: The presence of periodontal disease was significantly higher in Brazilian diabetic pregnancies (GDM and T1DM) when compared to non-diabetic pregnant women (C). The degree of periodontal disease was similar between the GDM and T1DM groups. Age, pregestational BMI, and HbA(1c) were factors related to CAL development in these two types of diabetes mellitus.
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Alcohol and tobacco consumption are closely correlated and published results on their association with breast cancer have not always allowed adequately for confounding between these exposures. Over 80% of the relevant information worldwide on alcohol and tobacco consumption and breast cancer were collated, checked and analysed centrally. Analyses included 58515 women with invasive breast cancer and 95067 controls from 53 studies. Relative risks of breast cancer were estimated, after stratifying by study, age, parity and, where appropriate, women's age when their first child was born and consumption of alcohol and tobacco. The average consumption of alcohol reported by controls from developed countries was 6.0 g per day, i.e. about half a unit/drink of alcohol per day, and was greater in ever-smokers than never-smokers, (8.4 g per day and 5.0 g per day, respectively). Compared with women who reported drinking no alcohol, the relative risk of breast cancer was 1.32 (1.19 - 1.45, P < 0.00001) for an intake of 35 - 44 g per day alcohol, and 1.46 (1.33 - 1.61, P < 0.00001) for greater than or equal to 45 g per day alcohol. The relative risk of breast cancer increased by 7.1% (95% CI 5.5-8.7%; P
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OBJETIVO: Analisar a distribuição espacial do risco de acidente do trabalho controlado por variáveis nutricionais e outras co-variáveis. MÉTODOS: Estudo caso-controle espacial de base hospitalar, tendo como variável de interesse a localização espacial dos acidentes do trabalho. Foram amostrados 794 trabalhadores, no período de maio a outubro de 2004. Os critérios de inclusão para casos (N=263) foram: ser trabalhador acidentado do trabalho, morador de Piracicaba, com idade entre 15 e 60 anos, e atendido em centro de ortopedia e traumatologia. Os controles (N=531) tiveram o mesmo critério de idade e residência na cidade, exceto que o acidente não era do trabalho, tendo sido considerandos também trabalhadores acompanhantes dos casos. A distribuição espacial da estimativa baseou-se no ajuste do modelo aditivo generalizado, tendo as coordenadas geográficas dos casos e controles como componente espacial não linear e as demais co-variáveis como componente linear. RESULTADOS: A variação da estimativa do risco espacial de acidentes do trabalho, controlada por sexo (OR=1,87; p<0,001), escolaridade (OR=0,85; p<0,0001), ser autônomo (OR=0,36; p<0,01) e circunferência de cintura (OR=0,98; p=0,05), mostra que as regiões de maior risco foram a centro-leste e a área que forma um "corredor" entre as regiões sul-norte. CONCLUSÕES: O uso de ferramentas de geoprocessamento e a consideração de variáveis nutricionais fornecem elementos para a compreensão das relações que compõem o risco de acidentes do trabalho, sendo oportuna a continuidade de investigações que contemplem esses fatores.
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იოსებ გრიშაშვილი ბიბლიოთეკის შექმნას წიგნის გაცნობასთან ერთად შეუდგა. მალე ნაცნობთა წრეში მან სახელი მოიხვეჭა, როგორც წიგნის მოსიყვარულემ და მცოდნემ. მაგრამ იოსებ გრიშაშვილისთვის წიგნის სიყვარული სტიქიური კი არ იყო, არამედ გეგმაშეწონილი და კანონზომიერი. წიგნის სიყვარულმა განსაზღვრა იოსებ გრიშაშვილის მუშაობა წიგნების შეკრებაზე.
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Degut a la gran quantitat de problemes que requereixen grans potències de càlcul, s'empren sistemes de computació anomenats clústers, multiclústers i supercomputadors. Avui en dia aquests clústers son emprats en àrees de recerca, centres facultatius, etc. Per aconseguir optimitzar al màxim els recursos cal estudiar la interconnexió entre els sistemes per tal de determinar les possibles restriccions que es poden donar i disposar d'un mecanisme de monitorització de l'estat de la xarxa i dels nodes. Aquest treball pretén resoldre aquestes carències, aportant un estudi de la xarxa de l'àrea de treball d'un multiclúster i un programa que permeti descobrir les màquines d'un domini i la seva capacitat de comunicació amb la resta.
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This report is a well illustrated and practical Guide intended to aid engineers and engineering technicians in monitoring, maintaining, and protecting bridge waterways so as to mitigate or prevent scour from adversely affecting the structural performance of bridge abutments, piers, and approach road embankments. Described and illustrated here are the scour processes affecting the stability of these components of bridge waterways. Also described and illustrated are methods for monitoring waterways, and the various methods for repairing scour damage and protecting bridge waterways against scour. The Guide focuses on smaller bridges, especially those in Iowa. Scour processes at small bridges are complicated by the close proximity of abutments, piers, and waterway banks, such that scour processes interact in ways difficult to predict and for which reliable design relationships do not exist. Additionally, blockage by woody debris or by ice, along with changes in approach channel alignment, can have greater effects on pier and abutment scour for smaller bridges. These considerations tend to cause greater reliance on monitoring for smaller bridges. The Guide is intended to augment and support, as a source of information, existing procedures for monitoring bridge waterways. It also may prompt some adjustments of existing forms and reports used for bridge monitoring. In accord with increasing emphasis on effective management of public facilities like bridges, the Guide ventures to include an example report format for quantitative risk assessment applied to bridge waterways. Quantitative risk assessment is useful when many bridges have to be evaluated for scour risk and damage, and priorities need to be determined for repair and protection work. Such risk assessment aids comparison of bridges at risk. It is expected that bridge inspectors will implement the Guide as a concise, handy reference available back at the office. The Guide also likely may be implemented as an educational primer for new inspectors who have yet to become acquainted with waterway scour. Additionally, the Guide may be implemented as a part of process to check whether existing bridge-inspection forms or reports adequately encompass bridge-waterway scour.
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Kirje 14.1.1966
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Object The goal of this study was to establish whether clear patterns of initial pain freedom could be identified when treating patients with classic trigeminal neuralgia (TN) by using Gamma Knife surgery (GKS). The authors compared hypesthesia and pain recurrence rates to see if statistically significant differences could be found. Methods Between July 1992 and November 2010, 737 patients presenting with TN underwent GKS and prospective evaluation at Timone University Hospital in Marseille, France. In this study the authors analyzed the cases of 497 of these patients, who participated in follow-up longer than 1 year, did not have megadolichobasilar artery- or multiple sclerosis-related TN, and underwent GKS only once; in other words, the focus was on cases of classic TN with a single radiosurgical treatment. Radiosurgery was performed with a Leksell Gamma Knife (model B, C, or Perfexion) using both MR and CT imaging targeting. A single 4-mm isocenter was positioned in the cisternal portion of the trigeminal nerve at a median distance of 7.8 mm (range 4.5-14 mm) anterior to the emergence of the nerve. A median maximum dose of 85 Gy (range 70-90 Gy) was delivered. Using empirical methods and assisted by a chart with clear cut-off periods of pain free distribution, the authors were able to divide patients who experienced freedom from pain into 3 separate groups: patients who became pain free within the first 48 hours post-GKS; those who became pain free between 48 hours and 30 days post-GKS; and those who became pain free more than 30 days after GKS. Results The median age in the 497 patients was 68.3 years (range 28.1-93.2 years). The median follow-up period was 43.75 months (range 12-174.41 months). Four hundred fifty-four patients (91.34%) were initially pain free within a median time of 10 days (range 1-459 days) after GKS. One hundred sixty-nine patients (37.2%) became pain free within the first 48 hours (Group PF(≤ 48 hours)), 194 patients (42.8%) between posttreatment Day 3 and Day 30 (Group PF((>48 hours, ≤ 30 days))), and 91 patients (20%) after 30 days post-GKS (Group PF(>30 days)). Differences in postoperative hypesthesia were found: in Group PF(≤ 48 hours) 18 patients (13.7%) developed postoperative hypesthesia, compared with 30 patients (19%) in Group PF((>48 hours, ≤ 30 days)) and 22 patients (30.6%) in Group PF(>30 days) (p = 0.014). One hundred fifty-seven patients (34.4%) who initially became free from pain experienced a recurrence of pain with a median delay of 24 months (range 0.62-150.06 months). There were no statistically significant differences between the patient groups with respect to pain recurrence: 66 patients (39%) in Group PF(≤ 48 hours) experienced pain recurrence, compared with 71 patients (36.6%) in Group PF((>48 hours, ≤ 30 days)) and 27 patients (29.7%) in Group PF(>30 days) (p = 0.515). Conclusions A substantial number of patients (169 cases, 37.2%) became pain free within the first 48 hours. The rate of hypesthesia was higher in patients who became pain free more than 30 days after GKS, with a statistically significant difference between patient groups (p = 0.014).
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This report presents the results of a survey on the use of yellow versus white traffic paint. It was found that in most states the white paint was less expensive than the yellow. A substantial savings could be realized if an all white traffic marking system was permitted by the Federal Highway Administration. Paint costs from each state are presented, as well as by each region.