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Pet roundworms and hookworms: A continuing need for global worming
Donato Traversa
Parasites & Vectors , 2012, DOI: 10.1186/1756-3305-5-91
Abstract:
Are we paying too much attention to cardio-pulmonary nematodes and neglecting old-fashioned worms like Trichuris vulpis?
Donato Traversa
Parasites & Vectors , 2011, DOI: 10.1186/1756-3305-4-32
Abstract: The genus Trichuris encompasses nematodes affecting pets, livestock and other hosts, including human beings. These parasites are called whipworms, having a really thick ("whip handle") posterior part of the body and a long and slender anterior part. A mistake in the naming of the genus reflects the destiny of these elusive and enigmatic parasites, Trichuris, in fact, means "hair-tail", and was, most likely based on an erroneous past definition that the anterior extremity of the parasite body was the tail and not the cephalic end. An alternative name, i.e. Trichocephalus, was thereafter proposed to indicate a "hair-head"-like parasite, but was not accepted by the International Code of Zoological Nomenclature. Consequently, whipworms are classified in the genus Trichuris spp., but some authors still call them Trichocephalus spp., albeit erroneously [1].Trichuris vulpis, the canine whipworm, and Trichuris trichiura, the human whipworm, are the most important species in veterinary and human medicine. Although dogs and canids in general are preferential hosts of T. vulpis, its significance for human medicine is its controversial zoonotic ability. The present lack of an update on canine trichurosis is probably due to the fallacy that all major aspects of T. vulpis are well known and that there is nothing really new to be investigated or disseminated.Therefore, the aim of this article is to provide an overview of the state-of-the-art on the most important features of canine whipworm infection, together with a critical discussion of any weaknesses or gaps in our current knowledge. In fact, several moot issues arise if one analyses even the most recent literature available, especially in relation to distribution, diagnostic approaches, zoonotic potential and focused control programs.Adult T. vulpis inhabit the large intestine of domestic and wild canids, e.g. dogs and foxes. They are worms a few cm long (~4.5-7.5 cm) in which the thick, broad tail is about one quarter of the
Evidence for a new species of Cryptosporidium infecting tortoises: Cryptosporidium ducismarci
Donato Traversa
Parasites & Vectors , 2010, DOI: 10.1186/1756-3305-3-21
Abstract: This report aims to propose a new species of Cryptosporidium isolated from reptiles. Cryptosporidium spp. are apicomplexan parasites of a wide range of animals. Due to their biology, ecology and epidemiology these protozoa are globally distributed. The vertebrate hosts become infected through host-to-host contact or through ingestion of contaminated food or water [1,2]. The taxonomy of Cryptosporidium has been debated and several doubts and uncertainties still exist. For a long time the only recognized species have been Cryptosporidium parvum and Cryptosporidium muris. However, numerous other isolates were present in animals but described only in the last decades [3]. The difficulties in addressing Cryptosporidium taxonomy and in delineating new species mainly rely on the inability to morphologically discriminate the biological stages and on the difficulties in establishing monospecific experimental infections [3]. With the advent of nucleic acid-based techniques and sequencing, important results have been achieved in elucidating the taxonomical status of several Cryptosporidium isolates and presently 19 distinct species are known to affect amphibians, reptiles, birds and mammals [2,4]. Three more species are hypothesized to infect fishes but their status is not supported by sound biological and molecular data [2,4]. Indeed, the genetic characterization, at one or more loci, of Cryptosporidium is a fundamental requirement to assess, at the species level, a new Cryptosporidium isolate, along with the morphological description of the biological stages and definition of the host range, possibly based upon natural and experimental infections [2,4].Non-conventional animals, such as reptiles, have increased in popularity as pets in developed countries, posing new concerns in relation to their pathogens. Despite reptile cryptosporidiosis being recognized since the 1970s [5] the first described species (i.e. Cryptosporidium serpentis), which is able to cause significant gas
Planning and Control, the relevance of State in the running of policy networks
Traversa,Federico;
Revista Uruguaya de Ciencia Política , 2006,
Abstract: over recent years the state has progressively included the private and tertiary sectors in the implementation of public policies, creating, thus, true "policy networks". however, the effects of this new style of policy management are not limited to the manner in which public policies are implemented, but also affect the global logic of those policies and their outcomes. the role of the state in this new order is unclear, in particular following the strong attacks on the public administration that took place during the final quarter of the last century. this article analyzes the policy network that has developed around the ministry of housing, ordenance and the environment's housing programs since 1991. the research concludes that transparency and equity in public policies are not achieved by the simple creation of a policy network. the state therefore has an important role to play in the new forms of management, but the author has the view that efficient action on the part of the state depends on the existence of a technically qualified public administration with personnel policies that must be defined independently of party politics.
Regímenes de acumulación capitalista: Un enfoque estructural para analizar la estabilidad de la democracia (1945-2001)
TRAVERSA,FEDERICO;
Revista de ciencia política (Santiago) , 2010, DOI: 10.4067/S0718-090X2010000300003
Abstract: fifty years ago, lipset (1959) linked the capitalist economic development with the expansion of democracy. using the concept of regimes of accumulation (boyer, 2007) this paper attempts to offer a different perspective on this relationship. first, here i argue that only some regimes of capitalist accumulation were associated with democratic stability in the period 1945-2001; and only because of their special patterns of income distribution, and their stable rates of gdp growth. further, the effects of income distribution on democratic stability are evaluated here in new ways. first, because the median voter theorem is not used here (acemoglu and robinson, 2006; boix, 2003). and second, because instead of using the gini index as an independent variable, here i constructed a measure of income polarization (ied) that predict democratic stability more efficiently than the gini index.
Regímenes de acumulación capitalista: Un enfoque estructural para analizar la estabilidad de la democracia (1945-2001) Accumulation Regimes: A Structural Approach to Analyze the Stability of Democracy (1945-2001)
FEDERICO TRAVERSA
Revista de Ciencia Política , 2010,
Abstract: Hace cerca de cincuenta a os, Lipset (1959) ligó el desarrollo económico capitalista con la expansión de la democracia. A partir del uso del concepto de regímenes de acumulación (Boyer, 2007) este trabajo intenta ofrecer una perspectiva diferente sobre esta relación. Se argumenta que sólo algunos regímenes de acumulación capitalista estuvieron asociados a la estabilidad democrática en el período 1945-2001, y esto debido a sus patrones especiales de distribución del ingreso, y a sus ritmos estables de expansión del producto. Además, aquí se evalúan los efectos de la distribución del ingreso sobre la estabilidad democrática, en forma novedosa. Primero, porque se abandona el uso del Teorema del Votante Mediano (Acemoglu y Robinson, 2006; Boix, 2003). Y segundo, porque para la exploración empírica no se utiliza el índice de Gini como variable independiente; en su lugar se construye una medida de polarización de ingresos (IED) que permite predecir en forma más eficiente la estabilidad democrática. Fifty years ago, Lipset (1959) linked the capitalist economic development with the expansion of democracy. Using the concept of regimes of accumulation (Boyer, 2007) this paper attempts to offer a different perspective on this relationship. First, here I argue that only some regimes of capitalist accumulation were associated with democratic stability in the period 1945-2001; and only because of their special patterns of income distribution, and their stable rates of GDP growth. Further, the effects of income distribution on democratic stability are evaluated here in new ways. First, because the Median Voter Theorem is not used here (Acemoglu and Robinson, 2006; Boix, 2003). And second, because instead of using the Gini Index as an independent variable, here I constructed a measure of income polarization (IED) that predict democratic stability more efficiently than the Gini Index.
Materials for Renewable and Sustainable Energy provides the connection between materials, energy, and sustainability
Enrico Traversa,Hicham Idriss
Materials for Renewable and Sustainable Energy , 2012, DOI: 10.1007/s40243-012-0002-x
Abstract:
The progressive creation of the early mother-child bonding La creación progresiva del vínculo madre-ni o
Pierina Traversa Koroleff
Revista de Psicología , 2001,
Abstract: One of the research areas in mother-child health has focused on examining which are the signs inmothers' psychological functioning that would lead to a further disturbed development in an infant.The perspective of this paper has deviated from this research area. Natural observation of an infantduring his/her first year of life suggests that early mother-child affective bonding grows and strengthens progressively, even mother's behavior is not totally adequate. This article al so suggests that mother and child feed back each other in this early bonding. Una de las líneas de investigación en salud materno-infantil se ha interesado en investigar cuáles son los indicadores del funcionamiento psicológico de las madres que llevarían a un desarrollo posterior perturbado del infante. La perspectiva del presente trabajo se distancia de esta línea de investigación. La observación natural de un infante durante el primer a o de su vida, nos permite sugerir que el vínculo temprano entre una madre y su bebé se va gestando y consolidando progresivamente,más allá que el funcionamiento de la madre no sea del todo adecuado. Se sugiere además que en este vínculo afectivo temprano, la madre y el bebé se retroalimentan mutuamente.
Consumer′s preferences for newness and innovation in fresh beef in Argentine
Viola,María; Traversa,Oscar;
Agroalimentaria , 2004,
Abstract: the livestock agricultural policy is a relevant factor for increasing competition in food producing countries. even though consumer attitudes have an influence over the success of innovation, changes have been guided by a focus on structure and behavior of livestock and of industrial process. this article explores the novelty concept, from a specific case, to contribute evidence about reciprocal relations between elements of the subsystems. a general hypothesis is constructed: if in a group of consumers of fresh beef, preferences for new product co-evolves with several associated productive strategies, the changes in production practices will need to include new abilities (agreements, systems of capturing ideas, communication patterns, cooperation, technological reorganization, strategic alliances), whose scope will transform incremental innovations into radical ones. a set of data about consumers from buenos aires was used from: (1) a random sample of 690 household concerning meal selection and preferences; 2)studies about differences in ways of supply and strategies that influence perceptions about quality; and 3) data from interviews and discussion groups. the concept of novelty shows several relations with added value system practices. in a convergent style (changes towards demand satisfaction) home meal preference, the quality perception, consumer attitudes, and the scope of subsystem changes needed to introduce novelties, reinforce the need for new organizational strategies.
Cardio-Pulmonary Parasitic Nematodes Affecting Cats in Europe: Unraveling the Past, Depicting the Present, and Predicting the Future
Donato Traversa,Angela Di Cesare
Frontiers in Veterinary Science , 2014, DOI: 10.3389/fvets.2014.00011
Abstract: Various cardio-pulmonary parasitic nematodes infecting cats have recently been fascinating and stimulating the attention of the Academia, pharmaceutical companies, and veterinary practitioners. This is the case of the metastrongyloids: Aelurostrongylus abstrusus and Troglostrongylus brevior, the trichuroid: Capillaria aerophila (syn. Eucoleus aerophilus), and the filarioid: Dirofilaria immitis. Apparently, these parasites have been emerging in several European countries, thus, gaining an important role in feline parasitology and clinical practice. Under a practical standpoint, a sound knowledge of the biological, epidemiological, and clinical impact of cardio-respiratory parasitoses affecting cats, in addition to a potential risk of introduction, establishment, and spreading of “new” parasites in Europe is mandatory in order to understand the present and future impact for feline medicine and to address new strategies of control and treatment. The purpose of the present article is to review the current knowledge of heartworm and lungworm infections in cats, discussing and comparing past and present issues, and predicting possible future scenarios.
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