scholarly journals ZONEAMENTO DE RISCOS DE INCÊNDIOS FLORESTAIS EM REGIÕES HOT SPOT DE FOCOS DE CALOR NO ESTADO DO ACRE

Nativa ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 274
Author(s):  
Fabrício Assis Leal ◽  
Francisca Fabricia Bezerra de Souza ◽  
Glória Da Silva Almeida Leal

O presente estudo teve como objetivo realizar um zoneamento de riscos de incêndios florestais para a região Hot Spot de focos de calor no estado do Acre em 2016. Para identificar os municípios que fariam parte desta abordagem foi realizada análise de agrupamento Hot Spot. Após seleção dos municípios foram consideradas as seguintes variáveis para o zoneamento: declividade, orientação das encostas, altitude, rede viária, zonas urbanas, núcleos populacionais e uso do solo. Essas variáveis foram integradas por uma somatória em que todas elas receberam o mesmo peso. Os riscos foram classificados em cinco níveis, sendo: baixo, moderado, alto, muito alto e extremo. Ao todo, quatro municípios foram considerados Hot Spot e tiveram seu zoneamento de risco realizado. Entre as classes destacaram-se as de riscos Alto (24%), Moderado (25,5%) e Baixo (23,9%). Por outro lado, os riscos mais preocupantes tiveram porcentagem modestas, em relação as outras classes de risco, sendo risco Muito Alto com 14,1% da área total e risco Extremo com apenas 12,5% da área. Os resultados qualificados e quantificados do zoneamento de risco de incêndios foram de grande relevância, pois mostraram aquelas classes de riscos mais preocupantes por terem maior abrangência e maior alcance nas regiões Hot Spot de focos de calor.Palavras-chave: análise espacial, geoprocessamento, mapeamento geoespacial.MAPPING OF FORESTRY FIRE RISKS IN THE HOT SPOT REGION OF HEAT FOCUS, ACRE ABSTRACT:The objective of this study was to carry out a risk zoning of forest fires in a region. To reach the outbreaks of heat and state of Acre in 2016. After the distribution of the answers, the altitude varied for zoning: slope, slope orientation, altitude, road network, urban areas, population centers and land use. These variables were integrated by a summation in all the same ones that received the weight. The touches were classified in low levels, being: low, moderate, high, very high and extreme. In all, four nations were Hot Spot stocks and had their risk zoning done. Among the classes, the highlights were High (24%), Moderate (25.5%) and Low (23.9%). On the other hand, the most worrisome risks were modest rates, in relation to the other risk classes, and the risk of capital loss was greater than 14.1% of the total area and Extreme risk with only 12.5% of the area. The indexes and quantification of fuel risk zoning were of great relevance, since they were found as more worrying risk classes due to a greater and greater extent in the regions.Keywords: geospatial analysis, geoprocessing, geospatial mapping.

FLORESTA ◽  
2020 ◽  
Vol 50 (4) ◽  
pp. 1818
Author(s):  
Bruna Kovalsyki ◽  
Alexandre França Tetto ◽  
Antonio Carlos Batista ◽  
Nilton José Sousa ◽  
Marta Regina Barrotto do Carmo ◽  
...  

Forest fire hazard and risk mapping is an essential tool for planning and decision making regarding the prevention and suppression of forest fires,as well as fire management in general, as it allows the spatial visualization of areas with higher and lower ignition probability. This study aimed to develop a forest fire risk zoning map for the Vila Velha State Park and its surroundings (Ponta Grossa, Paraná State, Brazil), for the period of higher incidence of forest fires (from April to September) and for the period of lower incidence (from October to March). The following risk and hazard variables were identified: human presence, usage zones, topographical features, soil coverage and land use and meteorological conditions. Coefficients (0 to 5) reflecting the fire risk or hazard degree were allocated to each variable in order to construct the maps. The integration of these maps, through a weighting model, resulted in the final risk mapping. The very high and extreme risk classes represented about 38% of the area for both periods. The forest fire risk mapping spatially represented the levels of fire risk in the area, allowing the managers to identify the priority sectors for preventive actions in both fire seasons.


1988 ◽  
Vol 60 (3) ◽  
pp. 487-497 ◽  
Author(s):  
C. J. Bates ◽  
T. D. Cowen ◽  
Harumi Tsuchiya

1. Guinea-pig dams were fed on purified diets containing high (5 g/kg diet plus 1 g/l drinking water) or moderate (0.5 g/kg diet) levels of ascorbic acid, in combination with high (1 g/kg diet) or moderate (0.043 g/kg diet) levels of iron, during pregnancy and suckling. Their offsprings' diets contained 0.1 g ascorbic acid/kg and 0.04 g Fe/kg.2. High ascorbic acid intake clearly enhanced both tissue ascorbate and Fe storage in the dams, and high Fe intake increased both the dams' and the pups' tissue Fe stores.3. In the animals receiving high Fe intake, a co-existing high ascorbate intake by the dams reduced the growth rate of the offspring, but only during the early stages of development, not during the later stages of post-weaning growth. All the pups' tissue ascorbate levels fell after weaning, but those born of the dams receiving the high ascorbic acid diets did not fall to levels lower than those of the other pups.4. Thus, although certain disadvantages to the offspring resulting from very-high ascorbic acid intake by pregnant guinea-pig dams were detected, these did not include permanently increased ascorbate requirements, and hence a progression to scurvy as the pups grew and matured.


2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Domina Petric

Addiction alters the levels of all happy brain hormones. My hypothesis is that addictive stimuli cause high amplitude changes in happy brain hormones with initially very high levels followed by very low levels (rebound effect). On the other hand, non-addictive stimuli such as creative work, moderate physical activity, healthy diet, healthy relationships and socialization, cause moderate amplitude changes in happy brain hormones with stable levels of dopamine, serotonin, endorphins and oxytocin without rebound effect. Therefore, all of these non-addictive stimuli might be very helpful in the treatment of addiction.


Neofilolog ◽  
2019 ◽  
Vol 2 (42/2) ◽  
pp. 241-254
Author(s):  
Ewa Piechurska-Kuciel

Reflection is understood as an activity which enables the reproduction of past experiences, reflection and meditation about them and their evaluation. One of the most significant features shaping learner reflection may be willingness to communicate in a foreign language – one’s volitional readiness to enter a communicative event in this language. In spite of a wealth of research conducted in this area, it is still unclear why some students are willing to start communication in a foreign language, while others are adamant to avoid it. For the purpose of this paper a qualitative-quantitative study was performed, focusing on four students with very low levels of willingness to communicate in English, and four with very high levels. The research results demonstrate that high willingness is connected with feelings of safety, a tendency to achieve high proficiency and learning satisfaction. On the other hand, low willingness to communicate in English coexists with feelings of threat and unavoidable necessity to surrender to the demands of the educational system.


2011 ◽  
Vol 11 (3) ◽  
pp. 931-943 ◽  
Author(s):  
M. Chini ◽  
F. R. Cinti ◽  
S. Stramondo

Abstract. The use of Very High Resolution (VHR) satellite panchromatic image is nowadays an effective tool to detect and investigate surface effects of natural disasters. We specifically examined the capabilities of VHR images to analyse earthquake features and detect changes based on the combination of visual inspection and automatic classification tools. In particular, we have used Quickbird (0.6 m spatial resolution) images for detecting the three main co-seismic surface features: damages, ruptures and landslides. The present approach has been applied to the 8 October 2005, Mw7.6 Kashmir, Pakistan, earthquake. We have focused our study in and around the main urban areas hit by the above earthquake specifically at Muzaffarabad and Balakot towns. The automatic classification techniques provided the best results wherever dealing with the damage to man-made structures and landslides. On the other hand, the visual inspection method demonstrated in addressing the identification of rupture traces and associated features. The synoptic view (concerning landslide, more than 190 millions of pixels have been automatically classified), the spatiotemporal sampling and the fast automatic damage detection using satellite images provided a reliable contribution to the prompt response during natural disaster and for the evaluation of seismic hazard as well.


1973 ◽  
Vol 72 (1) ◽  
pp. 137-155 ◽  
Author(s):  
R. Welschen

ABSTRACT Rats were hypophysectomized at oestrus, at days 1, 2 and 3 of dioestrus or at pro-oestrus. They were injected with various doses of PMS only, or with combinations of PMS and HCG, in such a way that fairly constant blood levels could be expected, and killed 24 h later. It was found that the minimal doses of substitutional gonadotrophins, required to maintain normal follicular growth, were considerably higher during the period from pro-oestrus to oestrus (when a new generation of follicles begin to develop) than during all the other periods investigated. This peak requirement primarily concerned PMS. The minimal requirements during other periods showed only minor variations. The maximal doses which still caused normal follicular growth were higher during the period from dioestrus −1 to −3 than during the period from oestrus to dioestrus −1 and the period from dioestrus −3 to pro-oestrus. The data suggest that during pro-oestrus very high amounts of FSH are required to recruite a new crop of follicles, whereas during the other phases, low levels of both FSH and LH are generally needed for normal follicular growth.


1979 ◽  
Author(s):  
J. G. Kelton ◽  
P. B. Neame ◽  
I. Walker ◽  
A. G. Turpie ◽  
J. McBride ◽  
...  

Thrombotic thrombocytopenic purpura (TTP) is a rare but serious illness of unknown etiology. Treatment by plasmapheresis has been reported to be effective but the mechanism for benefit is unknown. We have investigated the effect of plasmapheresis in 2 patients with TTP by quantitating platelet associated IgG (PAIgG) levels prior to and following plasmapheresis. Both patients had very high levels of PAIgG at presentation (90 and A8 fg IgG/platelet respectively, normal 0-5). in both, the PAIgG levels progressively fell to within the normal range and the platelet count rose following plasmapheresis. One patient remained in remission with normal platelet counts and PAIgG levels. The other relapsed after plasmapheresis and the PAIgG level rose prior to the fall in platelet count. Plasmapheresis was repeated and resulted in normalization of both the platelet count and PAIgG level. It is suggested that plasmapheresis removes antiplatelet antibody or immune complexes which may be of etiological importance in this illness.


Author(s):  
Milen Dimov

The present study traces the dynamics of personal characteristics in youth and the manifested neurotic symptoms in the training process. These facts are the reason for the low levels of school results in the context of the existing theoretical statements of the problem and the empirical research conducted among the trained teenagers. We suggest that the indicators of neurotic symptomatology in youth – aggression, anxiety, and neuroticism, are the most demonstrated, compared to the other studied indicators of neurotic symptomatology. Studies have proved that there is a difference in the act of neurotic symptoms when tested in different situations, both in terms of expression and content. At the beginning of the school year, neurotic symptoms, more demonstrated in some aspects of aggressiveness, while at the end of school year, psychotism is more demonstrated. The presented summarized results indicate that at the beginning of the school year, neurotic symptoms are strongly associated with aggression. There is a tendency towards a lower level of social responsiveness, both in the self-assessment of real behavior and in the ideal “I”-image of students in the last year of their studies. The neurotic symptomatology, more demonstrated due to specific conditions in the life of young people and in relation to the characteristics of age.


1994 ◽  
Vol 29 (7) ◽  
pp. 327-333
Author(s):  
Y. Matsui ◽  
F. Yamaguchi ◽  
Y. Suwa ◽  
Y. Urushigawa

Activated sludges were acclimated to p-nitrophenol (PNP) in two operational modes, a batch and a continuous. The operational mode of the PNP acclimation of activated sludges strongly affected the physiological characteristics of predominant microorganisms responsible for PNP degradation. Predominant PNP degraders in the sludge in batch mode (Sludge B) had lower PNP affinity and were relatively insensitive to PNP concentration. Those of the sludge in continuous mode (Sludge C), on the other hand, had very high PNP affinity and were sensitive to PNP. MPN enumeration of PNP degraders in sludge B and C using media with different PNP concentrations (0.05, 0.2,0.5 and 2.0 mM) supported the above results. Medium with 0.2 mM of PNP did not recover PNP degraders in sludge C well, while it recovered PNP degraders in sludge B as well as the medium with 0.05 mM did. When switching from one operational mode to the other, the predominant population in sludge B shifted to the sensitive group, but that of sludge C did not shift at the given loading of PNP, showing relative resistance to inhibitive concentration.


This chapter compares the leadership capital of two long-serving UK prime ministers: Tony Blair and Margaret Thatcher, treble election winners who held office for a decade. Mapping their capital over time reveals two very different patterns. Thatcher began with low levels of capital, building to a mid-term high and final fragile dominance, though her capital fell between elections. Blair possessed very high levels from the outset that gradually declined in a more conventional pattern. Both benefited from electoral dominance and a divided opposition, Thatcher’s strength lay in her policy vision while Blair’s stemmed from his popularity and communication skills. The LCI reveals that both prime ministers were successful without being popular, sustained in office by the electoral system. Towards the end of their tenures, both leaders’ continued dominance masked fragility, ousted when unrest in their parties and policy unpopularity eroded their capital.


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