Matias Gonzalez | Universidad Adolfo Ibáñez (original) (raw)
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Papers by Matias Gonzalez
Horticultura Brasileira, 2010
'BRS Tospodoro' is a high lycopene tomato cultivar, which combines multiple disease resistance ge... more 'BRS Tospodoro' is a high lycopene tomato cultivar, which combines multiple disease resistance genes and desirable processing traits. This cultivar was found to be suitable for both conventional and organic crop systems. 'BRS Tospodoro' was obtained via backcross breeding using 'Viradoro' as recurrent parent and the inbred line 'CNPH 1306' as the donor of the Pto gene (resistance to Pseudomonas syringae pv. tomato race 0). 'BRS Tospodoro' has the Mi1-2 gene that controls resistance to root-knot nematodes (Meloidogyne incognita, M. javanica, and M. arenaria) as well as tolerance to populations of the aphid Macrosiphum euphorbiae (vector of Potyvirus species), and to whiteflies (Bemisia tabaci). 'BRS Tospodoro' has also the Sw-5b gene, which controls resistance to major Tospovirus species (Groundnut ringspotirus, Tomato chlorotic spot virus, Chrysanthemum stem necrosis virus, and Tomato spotted wilt virus). This cultivar is also resistant to Stemphylium solani and S. lycopersici (Sm gene), Fusarium oxysporum f. sp. lycopersici race 1 (I-1 gene) and Verticillium dahlie race 1 (Ve gene). 'BRS Tospodoro' presents uniform fruit ripening, with the first harvest being done around 110 to 120 days after plant emergence. The fruits are firm, square-shaped, with an average weight of 46 g (in organic cropping) to above 70 g (in conventional cropping). The soluble solids content is in the range between 4.6 and 4.8 ºBrix. The external fruit color is uniform (gene u) and bright red (L* = 44.1; a* = 33.9; b* = 20.4). The average lycopene content of mature fruits is 104 µg/g. This cultivar has the jointless locus (j2), which facilitates both manual and mechanical harvesting. 'BRS Tospodoro' has determinate growth habit (locus sp) with vigorous foliage, which provides good fruit protection from sunscald. 'BRS Tospodoro' can be cultivated in all the traditional processing tomato-producing areas of Brazil without the need of any technical adjustment. 'BRS Tospodoro' displayed very good adaptation to the South Brazilian Region and South Cone of South America (Argentina and Uruguay), where P. syringae pv. tomato and Tospovirus are serious economic problems for the crop. 'BRS Tospodoro' might also be cultivated in traditional processing tomato-producing areas (South-East, North-East and Central Brazil), if geminivirus control measures are adopted. Due to its vigorous foliage, 'BRS Tospodoro' requires careful monitoring of the environmental conditions that favors late blight (Phytophthora infestans) epidemics. 'BRS Tospodoro' has been evaluated under organic crop systems with excellent performance in field assays conducted in Brasilia-DF, Brazil.
Revista Medica De Chile, 2010
artículo de investigación rev Med chile 2010; 138: 143-151 Apoyo psicológico en desastres: Propue... more artículo de investigación rev Med chile 2010; 138: 143-151 Apoyo psicológico en desastres: Propuesta de un modelo de atención basado en revisiones sistemáticas y metaanálisis Psychological support for disaster victims: An evidence-based care model A search for meta analyses and systematic reviews on psychological support to disaster victims was carried out to devise a local support model. Based on 36 meta analyses and systematic reviews, the support should be carried out in five echelon levels: diffusion, social support, general medical care, general psychiatric care and psychiatric care carried out by experts. Only victims with well-established formal psychiatric disorders should receive psychotherapy or psychotropic medication. The rest should only receive psychological first aid. According to the best evidence available, a model for psychological care is proposed. (Rev Med Chile 2010; 138: 143-151).
Psychopathology, 1998
Personality traits and disorders have a strong influence on the course and outcome of depressive ... more Personality traits and disorders have a strong influence on the course and outcome of depressive and bipolar disorders. Studies of the influence of personality disorders (PD) and some PD clusters on outcome of mood disorders are controversial and suggest that more specific assessment of underlying traits or dimensions is needed. Utilizing the Munich Personality test (MP-T) scales of von Zerssen, this study tries to identify specific personality traits that may influence the outcome and clinical course of unipolar endogenous depression and bipolar disorder. Six unipolar depressives and 6 bipolar patients, according to DSM III-R and ICD 10 criteria, were assessed with the MP-T selfand family-reporting scales. Three years later, their outcome scores were correlated with the corresponding premorbid personality profile. Preliminary results show that introversion has a negative effect on outcome of unipolar melancholic depression, while extraversion, esoteric tendencies and rigidity have a positive influence. Neuroticism has a negative influence on outcome of bipolar disorder, but not on unipolar endogenous depression. Data from the literature suggest that neuroticism, hostility and social dysfunction seem to have a negative prognostic value only for nonendogenous depressives and bipolar disorder, thus supporting the notion that the diagnostic distinction between bipolar disorder, endogenous and nonendogenous depression is relevant to prognostic discussions. These observations help to understand the differences between depressive syndromes and their relationship to prognosis, but also to comprehend the role of personality in clinical and theoretical research of mood disorders.
Small Islands tend to contain fragile and diverse ecosystems. In addition, transportation costs, ... more Small Islands tend to contain fragile and diverse ecosystems. In addition, transportation costs, distance from the main economic centres, and low economies of scale are responsible for economic costs differentials in production and consumption activities. The purpose of this paper is to link the economic costs of insularity and the ecological costs associated with small islands development. Insular ecological costs are defined as the extra costs resulting from island development processes interacting with fragile ecosystems. We try to identify the factors that would make monetized ecological costs in islands higher than in mainland regions. The empirical part of the paper focuses on the case of managing urban solid waste in the Canary Islands. The comparison of a set of environmental indicators gives some support to the idea of ecological cost differences between islands and other geographical regions.
European Environment, 1995
The relationships between environmental and economic systems in the Canary Islands have been cond... more The relationships between environmental and economic systems in the Canary Islands have been conditioned by a development process based on the expansion of tourism. This paper focuses on the principal environmental problems resulting from the development process and how the local authorities are dealing with these problems. Environmental policy has been concentrated on managing land and water resources through direct regulation. Regulatory policy measures have not produced the expected results because their application has been uneven and incomplete. An attempt to introduce a systematic approach to environmental policy is the Environmental Action Plan 1995–2000. Although this plan has important advantages over the previous approach, it may fail because of the absence of a reliable system of quality indicators tpat would allow the objectives to be defined more precisely. A necessary condition for a sustainable development process would involve a substantial reduction in the dependency on exploiting natural resources to generate economic growth.
The tourist product lifecycle model predicts different stages of the evolution of the industry by... more The tourist product lifecycle model predicts different stages of the evolution of the industry by focusing on the number of tourists visiting a particular region over a period of time. In this paper we consider the role of environmental degradation and the decline in natural capital as determinants of the tourist lifecycle and their implications for the economic welfare of the recipient society. The model incorporates feedbacks from the impacts of tourism growth on the environmental attributes and the reaction of demand to these changes. It is shown that the optimal trajectory of the tourist consumption increases when the stock of natural capital is high and environmental attributes are preserved, and tend to decline when the tourist product has reached a low level of natural capital. The consideration of an exogenous tourist product life cycle does not alter the general results, nor the formulation of a profit maximizing model for the recipient society. The implication is that the evolution of demand as represented by the number of tourists does not need to coincide with the evolution of economic welfare. That is, the increase in the number of tourists is compatible with a decline in welfare as a result of the loss of competitiveness. The results have implications for the optimal management of the number of tourists and the environmental attributes of tourist destinations.
Horticultura Brasileira, 2010
'BRS Tospodoro' is a high lycopene tomato cultivar, which combines multiple disease resistance ge... more 'BRS Tospodoro' is a high lycopene tomato cultivar, which combines multiple disease resistance genes and desirable processing traits. This cultivar was found to be suitable for both conventional and organic crop systems. 'BRS Tospodoro' was obtained via backcross breeding using 'Viradoro' as recurrent parent and the inbred line 'CNPH 1306' as the donor of the Pto gene (resistance to Pseudomonas syringae pv. tomato race 0). 'BRS Tospodoro' has the Mi1-2 gene that controls resistance to root-knot nematodes (Meloidogyne incognita, M. javanica, and M. arenaria) as well as tolerance to populations of the aphid Macrosiphum euphorbiae (vector of Potyvirus species), and to whiteflies (Bemisia tabaci). 'BRS Tospodoro' has also the Sw-5b gene, which controls resistance to major Tospovirus species (Groundnut ringspotirus, Tomato chlorotic spot virus, Chrysanthemum stem necrosis virus, and Tomato spotted wilt virus). This cultivar is also resistant to Stemphylium solani and S. lycopersici (Sm gene), Fusarium oxysporum f. sp. lycopersici race 1 (I-1 gene) and Verticillium dahlie race 1 (Ve gene). 'BRS Tospodoro' presents uniform fruit ripening, with the first harvest being done around 110 to 120 days after plant emergence. The fruits are firm, square-shaped, with an average weight of 46 g (in organic cropping) to above 70 g (in conventional cropping). The soluble solids content is in the range between 4.6 and 4.8 ºBrix. The external fruit color is uniform (gene u) and bright red (L* = 44.1; a* = 33.9; b* = 20.4). The average lycopene content of mature fruits is 104 µg/g. This cultivar has the jointless locus (j2), which facilitates both manual and mechanical harvesting. 'BRS Tospodoro' has determinate growth habit (locus sp) with vigorous foliage, which provides good fruit protection from sunscald. 'BRS Tospodoro' can be cultivated in all the traditional processing tomato-producing areas of Brazil without the need of any technical adjustment. 'BRS Tospodoro' displayed very good adaptation to the South Brazilian Region and South Cone of South America (Argentina and Uruguay), where P. syringae pv. tomato and Tospovirus are serious economic problems for the crop. 'BRS Tospodoro' might also be cultivated in traditional processing tomato-producing areas (South-East, North-East and Central Brazil), if geminivirus control measures are adopted. Due to its vigorous foliage, 'BRS Tospodoro' requires careful monitoring of the environmental conditions that favors late blight (Phytophthora infestans) epidemics. 'BRS Tospodoro' has been evaluated under organic crop systems with excellent performance in field assays conducted in Brasilia-DF, Brazil.
Revista Medica De Chile, 2010
artículo de investigación rev Med chile 2010; 138: 143-151 Apoyo psicológico en desastres: Propue... more artículo de investigación rev Med chile 2010; 138: 143-151 Apoyo psicológico en desastres: Propuesta de un modelo de atención basado en revisiones sistemáticas y metaanálisis Psychological support for disaster victims: An evidence-based care model A search for meta analyses and systematic reviews on psychological support to disaster victims was carried out to devise a local support model. Based on 36 meta analyses and systematic reviews, the support should be carried out in five echelon levels: diffusion, social support, general medical care, general psychiatric care and psychiatric care carried out by experts. Only victims with well-established formal psychiatric disorders should receive psychotherapy or psychotropic medication. The rest should only receive psychological first aid. According to the best evidence available, a model for psychological care is proposed. (Rev Med Chile 2010; 138: 143-151).
Psychopathology, 1998
Personality traits and disorders have a strong influence on the course and outcome of depressive ... more Personality traits and disorders have a strong influence on the course and outcome of depressive and bipolar disorders. Studies of the influence of personality disorders (PD) and some PD clusters on outcome of mood disorders are controversial and suggest that more specific assessment of underlying traits or dimensions is needed. Utilizing the Munich Personality test (MP-T) scales of von Zerssen, this study tries to identify specific personality traits that may influence the outcome and clinical course of unipolar endogenous depression and bipolar disorder. Six unipolar depressives and 6 bipolar patients, according to DSM III-R and ICD 10 criteria, were assessed with the MP-T selfand family-reporting scales. Three years later, their outcome scores were correlated with the corresponding premorbid personality profile. Preliminary results show that introversion has a negative effect on outcome of unipolar melancholic depression, while extraversion, esoteric tendencies and rigidity have a positive influence. Neuroticism has a negative influence on outcome of bipolar disorder, but not on unipolar endogenous depression. Data from the literature suggest that neuroticism, hostility and social dysfunction seem to have a negative prognostic value only for nonendogenous depressives and bipolar disorder, thus supporting the notion that the diagnostic distinction between bipolar disorder, endogenous and nonendogenous depression is relevant to prognostic discussions. These observations help to understand the differences between depressive syndromes and their relationship to prognosis, but also to comprehend the role of personality in clinical and theoretical research of mood disorders.
Small Islands tend to contain fragile and diverse ecosystems. In addition, transportation costs, ... more Small Islands tend to contain fragile and diverse ecosystems. In addition, transportation costs, distance from the main economic centres, and low economies of scale are responsible for economic costs differentials in production and consumption activities. The purpose of this paper is to link the economic costs of insularity and the ecological costs associated with small islands development. Insular ecological costs are defined as the extra costs resulting from island development processes interacting with fragile ecosystems. We try to identify the factors that would make monetized ecological costs in islands higher than in mainland regions. The empirical part of the paper focuses on the case of managing urban solid waste in the Canary Islands. The comparison of a set of environmental indicators gives some support to the idea of ecological cost differences between islands and other geographical regions.
European Environment, 1995
The relationships between environmental and economic systems in the Canary Islands have been cond... more The relationships between environmental and economic systems in the Canary Islands have been conditioned by a development process based on the expansion of tourism. This paper focuses on the principal environmental problems resulting from the development process and how the local authorities are dealing with these problems. Environmental policy has been concentrated on managing land and water resources through direct regulation. Regulatory policy measures have not produced the expected results because their application has been uneven and incomplete. An attempt to introduce a systematic approach to environmental policy is the Environmental Action Plan 1995–2000. Although this plan has important advantages over the previous approach, it may fail because of the absence of a reliable system of quality indicators tpat would allow the objectives to be defined more precisely. A necessary condition for a sustainable development process would involve a substantial reduction in the dependency on exploiting natural resources to generate economic growth.
The tourist product lifecycle model predicts different stages of the evolution of the industry by... more The tourist product lifecycle model predicts different stages of the evolution of the industry by focusing on the number of tourists visiting a particular region over a period of time. In this paper we consider the role of environmental degradation and the decline in natural capital as determinants of the tourist lifecycle and their implications for the economic welfare of the recipient society. The model incorporates feedbacks from the impacts of tourism growth on the environmental attributes and the reaction of demand to these changes. It is shown that the optimal trajectory of the tourist consumption increases when the stock of natural capital is high and environmental attributes are preserved, and tend to decline when the tourist product has reached a low level of natural capital. The consideration of an exogenous tourist product life cycle does not alter the general results, nor the formulation of a profit maximizing model for the recipient society. The implication is that the evolution of demand as represented by the number of tourists does not need to coincide with the evolution of economic welfare. That is, the increase in the number of tourists is compatible with a decline in welfare as a result of the loss of competitiveness. The results have implications for the optimal management of the number of tourists and the environmental attributes of tourist destinations.