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31.
Heidi Hrabetz Horst Thiermann Norbert Felgenhauer Thomas Zilker Bernhard Haller Jörg Nährig Bernd Saugel Florian Eyer 《Chemico-biological interactions》2013
Organophosphate (OP) poisoning is still associated with high morbidity and mortality rates, both in resource-poor settings and in well-developed countries. Despite numerous publications dealing with this particular poison, detailed clinical data on more severe overdoses with these agents are relatively sparsely reported. A retrospective study was consequently conducted on 33 patients with OP poisoning admitted to our intensive care unit (ICU) to provide additional data on clinical features. We included moderate to severe poisonings between 2000 and 2012 who required admission to ICU. 相似文献
32.
旅游共生网络韧性是提升旅游业抗风险能力的关键。结合共生理论与韧性理论,建立"干扰-响应-状态"旅游共生网络韧性研究框架,引入共生力度指标优化生长性、层级性、匹配性、连通性和传输性等网络韧性指标的测度方法,基于此分析了危机干扰下武陵山片区旅游共生网络韧性变化及机制。结果表明:(1)旅游共生网络韧性表现出复杂的时空变化特征,节点的共生力度呈差异性增强变化,生长性呈波动增强变化,层级性和匹配性呈摆动变化,连通性和传输性呈非线性非同步增强变化;(2)旅游共生网络对干扰具有不同响应特征,表现为不同时期节点共生力度和节点失效对连通性和传输性的差异影响,以及网络抗干扰能力不同程度的恢复变化;(3)危机干扰下旅游共生网络韧性表现出波动变化特征,结构与要素间呈复杂交互作用机制。要素的协调作用和有序发展,是提升旅游共生网络韧性的重要途径。研究对促进区域旅游业韧性发展具有重要意义。 相似文献
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Introduction
Numerous studies have shown that economic crises are linked to a worsening of health conditions of the population. During the current economic crisis in Spain, there have been significant cuts in social and health services and a general worsening of the emotional well-being of the population. All these changes could have an impact on the health of the population, especially in the most vulnerable groups like older people.Material and methods
The evolution of life expectancy and healthy life years in the period 2004-2014 have been examined in order to examine the health status of people aged 65 years and over in Spain during the economic crisis.Results
Changes are observed in the evolution of healthy life years of people aged 65 years and over, particularly in the case of women.Conclusions
The results do not show that the current economic crisis has had a negative impact on the health conditions of older people in Spain, but there has been a decline in their well-being and quality of life. 相似文献35.
Sound production in the Ponto‐Caspian goby Neogobius fluviatilis and acoustic affinities within the Gobius lineage: implications for phylogeny
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Sven Horvatić Francesco Cavraro Davor Zanella Stefano Malavasi 《Biological journal of the Linnean Society. Linnean Society of London》2016,117(3):564-573
The aim of this study was to describe the vocal repertoire of the Ponto‐Caspian goby Neogobius fluviatilis and to compare the acoustic properties of this species with those of other soniferous Mediterranean gobies belonging to the Gobius lineage. Vocalizations and associated behaviours were recorded under controlled aquarium conditions in female and male N. fluviatilis. Sound emission was elicited by means of ‘intruder tests’, using an individual of the same or opposite sex as an intruder, and recording sounds using a hydrophone placed 20 cm from the shelter used as a nest for the resident fish. Five acoustic properties, including spectral and temporal properties, were measured from 13 individuals. The vocal repertoire of the species consisted of sequences of short vocalizations during both agonistic and reproductive intraspecific interactions. The wave form of each sound resolved in a pure sine wave composed of rapidly repeated pulses. Sounds lasted about 200 ms, showing an average fundamental frequency of about 80 Hz. Sound properties did not differ between reproductive and the aggressive contexts, and the general structure of sounds was highly stereotyped. The individual means of three acoustic independent traits characterizing the sounds of seven species of the Gobius lineage, including N. fluviatilis, were then entered in a discriminant function analysis to assess how well species could be differentiated on the basis of acoustics, and their degree of affinities. The results suggested that the pulse repetition rate of the sounds, i.e. the relative tonal/pulsatile nature of the sounds, was the most important property in differentiating the species, and that this trait may contain a high level of phylogenetic signal, as the species producing tonal sounds clustered together, in line with the results of recent molecular phylogenic studies. The results were discussed in light of the geological and phylogeographical events believed to have driven the diversification of European gobies. 相似文献
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38.
Reinterpreting the State of Fisheries and their Management 总被引:1,自引:0,他引:1
Ray Hilborn 《Ecosystems》2007,10(8):1362-1369
Abstract
A series of recent high-profile papers in Science and Nature have led readers to believe that most fisheries worldwide are overexploited and that current fisheries management practices
have universally failed. In reality, current fisheries management is working well to achieve the legislated objective of MSY
in some countries but is failing in others. Here, I present three interpretations about the status of fisheries management
that are widely accepted and for each consider an alternative interpretation of the data. I propose that, rather than abandoning
current approaches to fisheries management, we should expand the use of the management tools used in fisheries that currently
achieve biological and economic sustainability. 相似文献
39.
Begoña Vitoriano J. Tinguaro Rodríguez Gregorio Tirado F. Javier Martín-Campo M. Teresa Ortuño Javier Montero 《人类与生态风险评估》2015,21(5):1341-1360
ABSTRACTProviding emergency relief to the victims of natural disasters is a hugely complex process fraught with many challenging aspects: multiple uncertainties, little reliable information, scarcity of resources, a variety of involved entities, and so on. Nowadays there is a lot of information that could be used to improve decision-making in disaster management, but usually it is not available at the right moment, in the right way, or it is partially known or vague. In this article we analyze the decision-making process for disaster management from the general view of intelligent decision-making to the specific characteristics of this context. This specificity deals with a new kind of logistics, and it is shown how this humanitarian logistics, specifically designed with the aim of alleviating suffering of vulnerable people, is a growing new research area to develop new decision aid models for disaster management, identifying new and relevant differences with other types of logistics. To illustrate these claims, two models are introduced, one for assessment of consequences in the earlier stage after a disaster (focused on the unknown, one of the main characteristics in disaster management), and another one for last mile distribution of humanitarian aid (focused on the multicriteria nature of decision-making on disaster management). 相似文献
40.
V. F. Levchenko V. V. Menshutkin 《Journal of Evolutionary Biochemistry and Physiology》2009,45(2):309-321
A model of evolution of human society and biosphere, which is based on concepts of V.I. Vernadskii and of L.N. Gumilev about ethnogenesis has been developed and studied. The mathematical apparatus of the model is composition of finite stochastic automats. By using this model, a possibility of the global ecological crisis is demonstrated in the case of preservation of the current tendencies of interaction of the biosphere and the human civilization. 相似文献