985 resultados para 618~959AD


Relevância:

20.00% 20.00%

Publicador:

Resumo:

Radiolabeled products were formed from labeled substrates during anaerobic incubation of sediments from Sites 618, 619, and 622. One set of experiments formed 14CO2, 14CH4, and 35SH2 from 2-14C-acetate and 35S-sulfate; a second set formed 14CH4 from 14C-methylamine or 14C-trimethylamine. Levels of 14CO2 and 35S2 formed were two to three orders of magnitude greater than 14CH4. Production of 14CH4 by Deep Sea Drilling Project (DSDP) sediments was four to five orders of magnitude less than that formed by anoxic San Francisco Bay sediment. However, incubation of Site 622 sediment slurries under H2 demonstrated production of small quantities of CH4. These results indicate that DSDP sediments recovered from 4 to 167 m sub-bottom (age 85,000-110,000 yr.) harbor potential microbial activity which includes sulfate reducers and methanogens. Analysis of pore waters from these DSDP sites indicates that bacterial substrates (acetate, methylated amines) were present.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Radiolarians are present in samples from six of the seven Deep Sea Drilling Project Leg 96 sites examined. The age of the siliceous fauna in these samples ranges from late Pleistocene through Holocene, with some Cretaceous radiolarians redeposited in Pleistocene sequences. Radiolarian preservation is discontinuous at these sites except for intraslope basin Site 618, where the sediments throughout the first five cores contain radiolarians.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Preliminary data on dissolved organic carbon (DOC) and dissolved sugars in interstitial water samples collected at Sites 618, 619, and 623 of Deep Sea Drilling Project Leg 96 are presented. At Site 618 in Orca Basin, the DOC content of the interstitial water peaks in the hypersaline sulfate reduction zone. The sugar content reaches a maximum and the DOC content begins to decrease at the depth of methane gas generation. Below that depth, the sugar and DOC contents are about constant. At Site 619 in Pigmy Basin, the DOC content increases slightly with depth in the sulfate reduction and the methane fermentation zones. The sugar content is lower in the sulfate reduction zone than in the methane fermentation zone; sugar concentration increases and fluctuates with methane gas percentages within the methane fermentation zone. At Site 623 in the lower fan region of the Mississippi Fan, there is no sulfate reduction zone. The DOC and sugar contents of the interstitial water are almost constant with depth.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho

Relevância:

20.00% 20.00%

Publicador:

Resumo:

En la Antigua Roma las mujeres casadas no gozaban de ningún tipo de libertades y todos los placeres les eran vedados a su clase (Rousselle, 2000). Responsables de la gestación de los futuros ciudadanos, su esfera de acción se limitaba al hogar, donde, además de procurarles especial atención a sus maridos e hijos, estaban encargadas de realizar, entre otras tareas, el control de la servidumbre, la administración de los gastos y el tejido (Knapp, 2011). A diferencia de las mujeres de otras clases, prostitutas y esclavas, la conducta de las matronas debía estar regida por la castidad, la reserva, la modestia y la pietas, principales virtudes celebradas en las fuentes epigráficas (CIL 6.23773, 8.11294). Como consecuencia de la corrupción de las costumbres durante la República, Augusto sancionó una serie de leyes (Lex Iulia de maritandis ordinibus y de adulteriis coercendis en 18 a.C., Lex Papia Poppaea en 9 d.C.) que, basándose en la tradición de los antepasados, estaban destinadas a ejercer un fuerte dominio sobre las políticas familiares. Se obligaba a los estratos superiores de la sociedad a contraer uniones legítimas y a tener descendencia, y se sancionaba con severidad a aquellas mujeres que cometían adulterio y que no se ajustaban al modelo femenino que el Estado buscaba imponer (Pomeroy, 1999). Bajo la luz de estas consideraciones acerca de la matrona, nos proponemos ofrecer una lectura posible de los fragmentos 618-9 y 681 M del poeta satírico Lucilio, conservados únicamente por transmisión indirecta. Así pues, a partir de información recabada del contexto social y político, intentamos demostrar que en el horizonte del pensamiento romano se mantiene constante un único ideal de mujer, al mismo tiempo que, a partir de referencias intertextuales, logramos dar sentido(s) a un texto que sólo a simple vista parece no poder decirnos mucho

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Introduction and Aims: Since the 1990s illicit drug use death rates in Australia have increased markedly. There is a notable gap in knowledge about changing socio-economic inequalities in drug use death rates. Some limited Australian and overseas data point to higher rates of drug death in the lowest socio-economic groups, but the paucity of available studies and their sometimes conflicting findings need to be addressed. Design and Methods: This paper uses data obtained from the Australian Bureau of Statistics (ABS) to examine changes in age-standardised drug-induced mortality rates for Australian males over the period 1981 – 2002. Socio-economic status was categorised as manual or non-manual work status. Results: With the rapid increase in drug-induced mortality rates in the 1990s, there was a parallel increase in socio-economic inequalities in drug-induced deaths. The decline in drug death rates from 2000 onwards was associated with a decline in socio-economic inequalities. By 2002, manual workers had drug death rates well over twice the rate of non-manual workers. Discussion: Three factors are identified which contribute to these socio-economic inequalities in mortality. First, there has been an age shift in deaths evident only for manual workers. Secondly, there has been an increase in availability until 1999 and a relative decline in the cost of the drug, which most often leads to drug death (heroin). Thirdly, there has been a shift to amphetamine use which may lead to significant levels of morbidity, but few deaths. [Najman JM, Toloo G, Williams GM. Increasing socio-economic inequalities in drug-induced deaths in Australia: 1981–2002.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The requirement for improved efficiency whilst maintaining system security necessitates the development of improved system analysis approaches and the development of advanced emergency control technologies. Load shedding is a type of emergency control that is designed to ensure system stability by curtailing system load to match generation supply. This paper presents a new adaptive load shedding scheme that provides emergency protection against excess frequency decline, whilst minimizing the risk of line overloading. The proposed load shedding scheme uses the local frequency rate information to adapt the load shedding behaviour to suit the size and location of the experienced disturbance. The proposed scheme is tested in simulation on a 3-region, 10-generator sample system and shows good performance.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Substance misuse in people with serious mental disorders is common and has a wideranging negative impact. The multiplicity of problems suggests that this comorbidity is better conceptualized as a type of complex disorder than by ‘dual diagnosis’. Problems with sequential and parallel treatments have led to the development of integrated approaches, with one practitioner or team addressing both the substance use and mental disorder. These treatments are typically characterized by motivation enhancement, minimizing treatment-related stress, emphasizing harm reduction as well as abstinence, and assertive outreach. A review of published randomized trials demonstrates that superior effects to controls are rarely consistent across treatment foci and over time. While motivational interventions assist engagement, more intervention is usually required for integrated treatment programs to improve long-term outcomes more than control conditions. More intensive case management does not consistently improve impact, but extended cognitive-behavioral therapies have promise. Suggestions for maximizing treatment effects and improving research evidence are provided.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Raman spectra of brandholzite Mg[Sb(OH)6].6H2O were studied, complemented with infrared spectra, and related to the structure of the mineral. An intense Raman sharp band at 618 cm-1 is attributed to the SbO symmetric stretching mode. The low intensity band at 730 cm-1 is ascribed to the SbO antisymmetric stretching vibration. Low intensity Raman bands were found at 503, 526 and 578 cm-1. Corresponding infrared bands were observed at 527, 600, 637, 693, 741 and 788 cm-1. Four Raman bands observed at 1043, 1092, 1160 and 1189 cm-1 and eight infrared bands at 963, 1027, 1055, 1075, 1108, 1128, 1156 and 1196 cm-1 are assigned to δ SbOH deformation modes. A complex pattern resulting from the overlapping band of the water and hydroxyl units is observed. Raman bands are observed at 3240, 3383, 3466, 3483 and 3552 cm-1, infrared bands at 3248, 3434 and 3565 cm-1. The first two Raman bands and the first infrared band are assigned to water stretching vibrations. The two higher wavenumber Raman bands observed at 3466 and 3552 cm-1 and two infrared bands at 3434 and 3565 cm-1 are assigned to the stretching vibrations of the hydroxyl units. Observed Raman and infrared bands are connected with O-H…O hydrogen bonds and their lengths 2.72, 2.79, 2.86, 2.88 and 3.0 Å (Raman) and 2.73, 2.83 and 3.07 Å (infrared).

Relevância:

10.00% 10.00%

Publicador:

Resumo:

In 2005, the Healthcare Information Management Systems Society (HIMSS) Nursing Informatics Community developed a survey to measure the impact of health information technology (HIT), the IHIT Scale, on the role of nurses and interdisciplinary communication in hospital settings. In 2007, nursing informatics colleagues from Australia, England, Finland, Ireland, New Zealand, Scotland and the United States formed a research collaborative to validate the IHIT across countries. All teams have completed construct and face validation in their countries. Five out of six teams have initiated reliability testing by practicing nurses. This paper reports the international collaborative’s validation of the IHIT Scale completed to date.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

The Lane Change Test (LCT) is one of the growing number of methods developed to quantify driving performance degradation brought about by the use of in-vehicle devices. Beyond its validity and reliability, for such a test to be of practical use, it must also be sensitive to the varied demands of individual tasks. The current study evaluated the ability of several recent LCT lateral control and event detection parameters to discriminate between visual-manual and cognitive surrogate In-Vehicle Information System tasks with different levels of demand. Twenty-seven participants (mean age 24.4 years) completed a PC version of the LCT while performing visual search and math problem solving tasks. A number of the lateral control metrics were found to be sensitive to task differences, but the event detection metrics were less able to discriminate between tasks. The mean deviation and lane excursion measures were able to distinguish between the visual and cognitive tasks, but were less sensitive to the different levels of task demand. The other LCT metrics examined were less sensitive to task differences. A major factor influencing the sensitivity of at least some of the LCT metrics could be the type of lane change instructions given to participants. The provision of clear and explicit lane change instructions and further refinement of its metrics will be essential for increasing the utility of the LCT as an evaluation tool.