846 resultados para MESSINIAN SALINITY CRISIS


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Prescription drug abuse is the Nation’s fastest-growing drug problem. While there has been a marked decrease in the use of some illegal drugs like cocaine, data from the National Survey on Drug Use and Health (NSDUH) show that nearly one-third of people aged 12 and over who used drugs for the first time in 2009 began by using a prescription drug non-medically.1 The same survey found that over 70 percent of people who abused prescription pain relievers got them from friends or relatives, while approximately 5 percent got them from a drug dealer or from the Internet.2 Additionally, the latest Monitoring the Future study—the Nation’s largest survey of drug use among young people—showed that prescription drugs are the second most-abused category of drugs after marijuana.3 In our military, illicit drug use increased from 5 percent to 12 percent among active duty service members over a three-year period from 2005 to 2008, primarily attributed to prescription drug abuse.

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Swiss municipalities are to an import ant extent responsible for their own resources. Since these resources primarily depend on income and property tax from individuals and enterprises, their budgets are likely to be directly affected by the actual crisis of the financial sector and the economy. This paper investigates how the municipalities perceive this threat and how they reacted to it or plan to do so. In a nationwide survey conducted at the end of 2009 in all 2596 Swiss municipalities, we asked the local secretaries which measures they launch in order to cope with expected losses in tax income and a possible increase of welfare spending. Do the municipalities rather rely on Keynesian measures increasing public spending and accepting greater deficits, or do they try to avoid further deficits by austerity measures and a withdrawal of planned investments? The paper shows that only a few municipalities - mainly the bigger ones - expect to be strongly hit by the crisis. Their reactions, however, do not reveal the clear patterns theory lets to expect. Preferences for austerity measures and deficit spending become visible but many municipalities take measures from both theories. The strongest explaining factor whether municipalities react is the affectedness by the crisis followed by the fact that the municipality belongs to the French speaking part of the country. Size also has an effect whereas the strength of the Social Democrats is negligible. More difficult is it, to explain what kind of measures municipalities are likely to take.

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ABSTRACT Investigations into water potentials in the soil-plant system are of great relevance in environments with abiotic stresses, such as salinity and drought. An experiment was developed using bell pepper in a Neossolo Flúvico (Fluvent) irrigated with water of six levels of electrical conductivity (0, 1, 3, 5, 7 and 9 dS m-1) by using exclusively NaCl and by simulating the actual condition (using a mixture of salts). The treatments were arranged in a randomized block design, in a 6 × 2 factorial arrangement, with four replicates. Soil matric (Ψm) and osmotic (Ψo) potentials were determined 70 days after transplanting (DAT). Soil total potential was considered as the sum of Ψm and Ψo. Leaf water (obtained with the Scholander Chamber) and osmotic potentials were determined before sunrise (predawn) and at noon at 42 and 70 DAT. There were no significant differences between the salt sources used in the irrigation water for soil and plant water potentials. The supply of salts to the soil through irrigation water was the main factor responsible for the decrease in Ψo in the soil and in bell pepper leaves. The total potential of bell pepper at predawn reached values of -1.30 and -1.33 MPa at 42 and 70 DAT, respectively, when water of 9 dS m-1 was used in the irrigation. The total potential at noon reached -2.19 MPa. The soil subjected to the most saline treatment reached a water potential of -1.20 MPa at 70 DAT. There was no predawn equilibrium between the total water potentials of the soil and the plant, indicating that soil potential cannot be considered similar to that of the plant. The determination of the osmotic potential in the soil solution should not be neglected in saline soils, since it has strong influence on the calculation of the total potential.

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In the last 50 years, we have had approximately 40 events with characteristics related to financial crisis. The most severe crisis was in 1929, when the financial markets plummet and the US gross domestic product decline in more than 30 percent. Recently some years ago, a new crisis developed in the United States, but instantly caused consequences and effects in the rest of the world.This new economic and financial crisis has increased the interest and motivation for the academic community, professors and researchers, to understand the causes and effects of the crisis, to learn from it. This is the one of the main reasons for the compilation of this book, which begins with a meeting of a group of IAFI researchers from the University of Barcelona, where researchers form Mexico and Spain, explain causes and consequences of the crisis of 2007.For that reason, we believed this set of chapters related to methodologies, applications and theories, would conveniently explained the characteristics and events of the past and future financial crisisThis book consists in 3 main sections, the first one called "State of the Art and current situation", the second named "Econometric applications to estimate crisis time periods" , and the third one "Solutions to diminish the effects of the crisis". The first section explains the current point of view of many research papers related to financial crisis, it has 2 chapters. In the first one, it describe and analyzes the models that historically have been used to explain financial crisis, furthermore, it proposes to used alternative methodologies such as Fuzzy Cognitive Maps. On the other hand , Chapter 2 , explains the characteristics and details of the 2007 crisis from the US perspective and its comparison to 1929 crisis, presenting some effects in Mexico and Latin America.The second section presents two econometric applications to estimate possible crisis periods. For this matter, Chapter 3, studies 3 Latin-American countries: Argentina, Brazil and Peru in the 1994 crisis and estimates the multifractal characteristics to identify financial and economic distress.Chapter 4 explains the crisis situations in Argentina (2001), Mexico (1994) and the recent one in the United States (2007) and its effects in other countries through a financial series methodology related to the stock market.The last section shows an alternative to prevent the effects of the crisis. The first chapter explains the financial stability effects through the financial system regulation and some globalization standards. Chapter 6, study the benefits of the Investor activism and a way to protect personal and national wealth to face the financial crisis risks.

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Cinco generaciones de utilitaristas, apoyados en la ciencia social posterior a la revolución marginalista neoclásica, destruyeron la conexión clásica entre la reflexión filosófica normativa y el mundo de los derechos y de las instituciones sociales. El estilo de hacer filosofía política inaugurado por Rawls no sólo prometía romper a su vez con todo eso, sino que, aparentemente, apuntaba a una consciente reanudación de la manera clásica -preutilitarista, preneoclásica- de hacer filosofía política: derechos, virtudes, contratos, clases sociales y entramados institucionales -no sólo utilidades maximizadas por individuos atomísticamente y a -institucionalmente concebidos- volvían al núcleo de una filosofía política que se presentaba como «neocontractualista». En este artículo se argumenta que algunas de las opciones metodológicas asociadas al legado de Rawls (el «rawlsismo metodológico») explican el que la promesa fuera sólo muy parcialmente cumplida. A partir de la crisis del «rawlsismo metodológico» que se ha hecho patente en los últimos años, los autores, republicanos avant la mode, tratan de explicar(se) el espectacular auge experimentado recientemente -a favor y en contra- por la vieja tradición republicana.

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El texto analiza el hacer de los directivos superiores subnacionales de educación en Chile, contrastando las normas que les rigen con las funciones cumplidas. Se trata de un estudio exploratorio, cualitativo, sustentado en entrevistas semiestructuradas aplicadas a quienes ejercieron el cargo de Secretario Regional Ministerial de Educación. Los antecedentes permiten comprender las brechas entre lo definido y lo realizado, y por tanto, identificar nudos críticos que requieren ser resueltos en diversos planos. A partir de estos antecedentes se formulan propuestas en el marco de una nueva organización de la educación en el plano subnacional que orienten e impulsen su rediseño, objetivo político clave en las propuestas de modernización de la gestión del Estado.

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The Permo-Triassic crisis was a major turning point in geological history. Following the end-Guadalupian extinction phase, the Palaeozoic biota underwent a steady decline through the Lopingian (Late Permian), resulting in their decimation at the level that is adopted as the Permian-Triassic boundary (PTB). This trend coincided with the greatest Phanerozoic regression. The extinction at the end of the Guadalupian and that marking the end of the Permian are therefore related. The subsequent recovery of the biota occupied the whole of the Early Triassic. Several phases of perturbations in [delta]13Ccarb occurred through a similar period, from the late Wuchiapingian to the end of the Early Triassic. Therefore, the Permian-Triassic crisis was protracted, and spanned Late Permian and Early Triassic time. The extinction associated with the PTB occurred in two episodes, the main act with a prelude and the epilogue. The prelude commenced prior to beds 25 and 26 at Meishan and coincided with the end-Permian regression. The main act itself happened in beds 25 and 26 at Meishan. The epilogue occurred in the late Griesbachian and coincided with the second volcanogenic layer (bed 28) at Meishan. The temporal distribution of these episodes constrains the interpretation of mechanisms responsible for the greatest Phanerozoic mass extinction, particularly the significance of a postulated bolide impact that to our view may have occurred about 50,000[no-break space]Myr after the prelude. The prolonged and multi-phase nature of the Permo-Triassic crisis favours the mechanisms of the Earth's intrinsic evolution rather than extraterrestrial catastrophe. The most significant regression in the Phanerozoic, the palaeomagnetic disturbance of the Permo-Triassic Mixed Superchron, widespread extensive volcanism, and other events, may all be related, through deep-seated processes that occurred during the integration of Pangea. These combined processes could be responsible for the profound changes in marine, terrestrial and atmospheric environments that resulted in the end-Permian mass extinction. Bolide impact is possible but is neither an adequate nor a necessary explanation for these changes.

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Este trabajo estudia de qué modo el Descubrimiento del Nuevo Mundo contribuyó no sólo a la descomposición del Viejo Mundo, sino, más aún, a la desaparición del"mundo" o"cosmos" mismo, entendido como un todo definido y ordenado jerárquicamente según valores trascendentes. ABSTRACT: This paper studies how the Discovery of the New World contributed not only to the decomposition of the Old World, but moreover to the disappearance of the"world" or"cosmos" itself, understood as a whole defined and ordered hierarchically according to trascendent values

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[spa] Como expresión de la naturaleza erga omnes de las obligaciones jurídicas relativas a la protección de derechos humanos, muchos tratados de derechos humanos que establecen órganos de expertos permiten a los Estados Parte presentar quejas ante dichos órganos contra otras Partes que no observan las obligaciones convencionales. Tales quejas interestatales son un mecanismo híbrido que busca controlar la aplicación del tratado, solucionar las controversias entre Estados Parte y/o prevenir esas controversias. En la práctica, no obstante, las quejas interestatales se interponen en raras ocasiones, principalmente por causa de su alto componente político, que hace que sean vistas como un acto inamistoso. Pese a este escaso uso, llama la atención que la mayoría de quejas interestatales presentadas hasta la fecha se hayan referido a situaciones excepcionales calificables de"crisis", lo que parece poner de manifiesto que este mecanismo podría ser particularmente útil para hacer frente a las violaciones de derechos humanos cometidas en períodos de excepcionalidad.

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Whether it’s tornadoes, flooding, winter storms or an act of terrorism, emergencies can occur quickly and without warning. Although we cannot prevent emergencies, we can prepare for them. Teachers and administrators need to take special care as they are responsible for the students in their care. Putting together and having on hand a crisis kit can be invaluable in times of emergency.