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Search Results: 1 - 10 of 7012 matches for " Walter Tarello "
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Clinical Aspects of Dermatitis Associated with Dirofilaria repens in Pets: A Review of 100 Canine and 31 Feline Cases (1990–2010) and a Report of a New Clinic Case Imported from Italy to Dubai
Walter Tarello
Journal of Parasitology Research , 2011, DOI: 10.1155/2011/578385
Abstract: Cutaneous dirofilariasis is a parasitic disease caused by the mosquito-borne filarial nematodes Dirofilaria (Nochtiella) repens, living in the subcutaneous tissue of dogs, cats, wild carnivores, and humans. Cases have been recently reported also from Germany, Czech Republic, Hungary, Ukraine, Russia, Austria, Switzerland, France, The Netherlands, and the Middle East. D. repens is not widely known to cause chronic pruritic dermatitis in animals. Dermatological signs observed in 100 canine clinic cases were pruritus (100%), erythema (79%), papulae (62%), focal or multifocal alopecia (55%), hyperkeratosis (18%), crusting (14%), nodules (12%), acantosis (5%), and eczema (3%). Signs other than dermatological were conjunctivitis (46%), anorexia (35%), vomiting (26%), fever (25%), lethargy (20%), and lymph-adenomegaly (10%). A case imported from Italy to Dubai is described. The opportunistic role of D. repens might explain the presence of asymptomatic carriers, the concurrent observation of nondermatological signs, and the development of dermatitis in a subgroup of parasitized dogs. 1. Introduction Two main filarial parasites affect domestic carnivorous in Europe: Dirofilaria immitis, a parasite of the cardiovascular system, and Dirofilaria (Nochtiella) repens, a parasite of the subcutaneous connective tissue of dogs, cats, wild carnivores, and humans [1]. Aside these, pets can be less frequently infected by Acanthocheilonema (syn. Dipetalonema) reconditum and Cercopithifilaria (syn. Acanthocheilonema) grassii [2]. Subcutaneous dirofilariasis due to Dirofilaria repens is endemic in Southern and Eastern Europe, and many parts of Africa and Asia [1]. Dogs, cats, and wild carnivores are final hosts of D. repens and constitute the only source of accidental infestation for humans, in the presence of a competent population of mosquito vectors, including the Asian tiger mosquito Aedes albopictus and Culex pipiens [3]. Human cases have been recorded mainly in Italy, France, Spain, and Sri Lanka [3]. During the recent years, animal and human infection with D. repens has been detected in new areas of the world, including the Alps [4], Ukraine [5], the Middle East [6–8], and Germany [9]. Strict quarantine regulations seldom prevent propagation of D. repens, because the infection becomes patent only after 6–10 months and the adult parasite can live 2–4 years in the subcutaneous tissues of dogs [10, 11]. In infected cats [12–14] and dogs [15–17], diagnosis is based upon the presence of pruritic skin lesions, the finding of D. repens microfilariae, and a negative test for
Etiologic Agents and Diseases Found Associated with Clinical Aspergillosis in Falcons
Walter Tarello
International Journal of Microbiology , 2011, DOI: 10.1155/2011/176963
Abstract: The aim of this study was to describe parasitological, microbiological, and pathological findings associated with the isolation of Aspergillus species in 94 clinically diseased captive falcons from Dubai. Concomitant agents and/or diseases were identified in 64 cases, causing either single (=36) or multiple coinfections (=28). Diagnoses found more often in association with aspergillosis were chronic fatigue and immune dysfunction syndrome (CFIDS) (=29), Caryospora sp. (=16), Serratospiculum seurati infestation (=14), cestodiasis (=6), bumblefoot (=5), trematodosis due to Strigea falconispalumbi (=5), trichomoniasis (=4), Babesia shortti (=4), Mannheimia (Pastorella) haemolytica (=4), interstitial hepatitis (=4), Escherichia coli (=3), and Clostridium perfringens enterotoxemia (=2). Compared with a control group of 2000 diseased falcons without evidence of aspergillosis, the prevalence of Babesia shortti, CFIDS, Mannheimia (Pastorella) haemolytica, Escherichia coli, and falcon herpes virus infection was conspicuously higher in association with aspergillosis. These entities may be considered suitable candidates as predisposing factors for the mycosis.
Etiologic Agents and Diseases Found Associated with Clinical Aspergillosis in Falcons
Walter Tarello
International Journal of Microbiology , 2011, DOI: 10.1155/2011/176963
Abstract: The aim of this study was to describe parasitological, microbiological, and pathological findings associated with the isolation of Aspergillus species in 94?clinically diseased captive falcons from Dubai. Concomitant agents and/or diseases were identified in 64?cases, causing either single ( ) or multiple coinfections ( ). Diagnoses found more often in association with aspergillosis were chronic fatigue and immune dysfunction syndrome (CFIDS) ( ), Caryospora sp. ( ), Serratospiculum seurati infestation ( ), cestodiasis ( ), bumblefoot ( ), trematodosis due to Strigea falconispalumbi ( ), trichomoniasis ( ), Babesia shortti ( ), Mannheimia (Pastorella) haemolytica ( ), interstitial hepatitis ( ), Escherichia coli ( ), and Clostridium perfringens enterotoxemia ( ). Compared with a control group of 2000?diseased falcons without evidence of aspergillosis, the prevalence of Babesia shortti, CFIDS, Mannheimia (Pastorella) haemolytica, Escherichia coli, and falcon herpes virus infection was conspicuously higher in association with aspergillosis. These entities may be considered suitable candidates as predisposing factors for the mycosis. 1. Introduction Aspergillosis is considered the most common systemic mycosis in birds [1] and the most important cause of death in captive falcons [2, 3]. Infections with Aspergillus fumigatus and, less commonly, with A. flavus, A. terreus, and A. niger apparently share the same clinical importance in raptors held in captivity [4]. Clinical signs in birds are nonspecific and include reduction in appetite, weight loss, dyspnoea, lethargy, and death [5]. Avian aspergillosis involves mainly the lower respiratory tract [6]. This also occurs in falcons, in which the majority of reported cases are isolated from the air sacs [4]. These fungi are ubiquitous, but they become pathogenic mainly under stressful conditions, producing opportunistic infections as a result of inhalation of Aspergillus spores coupled with compromised immune functions in the host or in association with prolonged diseases [6–8]. Poor ventilation, malnutrition, toxins, vaccinations, long-term use of antibiotics and corticosteroids, hot-humid climate, and stress-associated conditions, such as recent capture, training, and change of ownership, are frequently mentioned as environmental precipitating factors influencing the onset and duration of aspergillosis in falcons [7–10]. Unfortunately, what actually causes immunosuppression and/or prolonged disease is rarely mentioned in the literature, because dual or multiple infections with potentially immunocompromising or
IDEOLOGIAS SETECENTISTAS DA CODIFICA O E ESTRUTURA DOS CóDIGOS
Giovanni Tarello
Meritum : Revista de Direito da Universidade FUMEC , 2012,
Abstract: Neste artigo, abordam-se as características específicas do termo "código". Diferencia-se o sentido particular que o termo passou a receber durante o século XVIII, agora tomado como sin nimo de direito, isto é, um livro de regras com unidade de matéria, vigente por toda uma extens o geográfica sob uma autoridade política, geral, ab-rogante e que veda a heterointegra o –, cujo sentido é construído pela convergência de três ideologias anteriores aparentemente n o conciliáveis: a pufendorfiana, a leibniziana e o reformismo do século XVIII. Além da análise dessas três ideologias, mostram-se, ainda, as condi es históricas específicas que permitiram a articula o momentanea entre elas. Por fim, s o tratados os três nódulos políticos que deveriam ser superados para a concretiza o do projeto codificador: a substitui o dos antigos status pelo sujeito de direito único; no direito civil, a pluralidade dos modos de gozar os bens em favor da propriedade moderna; no direito penal, a simplifica o da pluralidade de bens perseguidos pela repress o coercitiva.
Emergence of Space-Time and Gravitation  [PDF]
Walter Smilga
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.47129
Abstract:

In relativistic quantum mechanics, elementary particles are described by irreducible unitary representations of the Poincaré group. The same applies to the center-of-mass kinematics of a multi-particle system that is not subject to external forces. As shown in a previous article, for spin-1/2 particles, irreducibility leads to a correlation between the particles that has the structure of the electromagnetic interaction, as described by the perturbation algorithm of quantum electrodynamics. The present article examines the consequences of irreducibility for a multi-particle system of spinless particles. In this case, irreducibility causes a gravitational force, which in the classical limit is described by the field equations of conformal gravity. The strength of this force has the same order of magnitude as the strength of the empirical gravitational force.

Cosmology with Bounce by Flat Space-Time Theory of Gravitation and a New Interpretation  [PDF]
Walter Petry
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.47A1003
Abstract:

General relativity predicts a singularity in the beginning of the universe being called big bang. Recent developments in loop quantum cosmology avoid the singularity and the big bang is replaced by a big bounce. A classical theory of gravitation in flat space-time also avoids the singularity under natural conditions on the density parameters. The universe contracts to a positive minimum and then it expands during all times. It is not symmetric with regard to its minimum implying a finite age measured with proper time of the universe. The space of the universe is flat and the total energy is conserved. Under the assumption that the sum of the density parameters is a little bit bigger than one the universe is very hot in early times. Later on, the cosmological model agrees with the one of general relativity. A new interpretation of a non-expanding universe may be given by virtue of flat space-time theory of gravitation.

Reverse Engineering Approach to Quantum Electrodynamics  [PDF]
Walter Smilga
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.45079
Abstract:

The S matrix of e-e scattering has the structure of a projection operator that projects incoming separable product states onto entangled two-electron states. In this projection operator the empirical value of the fine-structure constant α acts as a normalization factor. When the structure of the two-particle state space is known, a theoretical value of the normalization factor can be calculated. For an irreducible two-particle representation of the Poincaré group, the calculated normalization factor matches Wyler’s semi-empirical formula for the fine-structure constant α. The empirical value of α, therefore, provides experimental evidence that the state space of two interacting electrons belongs to an irreducible two-particle representation of the Poincaré group.

Gravitation in Flat Space-Time and General Relativity  [PDF]
Walter Petry
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.25007
Abstract: A covariant theory of gravitation in flat space-time is stated and compared with general relativity. The results of the theory of gravitation in flat space-time and of general relativity agree for weak gravitational fields to low approximations. For strong fields the results of the two theories deviate from one another. Flat space-time theory of gravitation gives under some natural assumptions non-singular cosmological models with a flat space. The universe contracts to a positive minimum and then it expands for all times. Shortly, after the minimum is reached, the cosmological models of two theories approximately agree with one another if models in general relativity with zero curvature are considered. A flat space is proved by experiments.
Gravitation in Flat Space-Time and Black Holes  [PDF]
Walter Petry
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.516156
Abstract: Static, spherically symmetric bodies are studied by the use of flat space-time theory of gravitation. In empty space a singularity at a Euclidean distance from the centre can exist. But the radius of this singular sphere is smaller than the radius of the body. Hence, there is no event horizon, i.e. black holes do not exist. Escape of energy and information is possible. Flat space-time theory of gravitation and quantum mechanics do not contradict to one another.
Creation of a Non-Expanding, Non-Singular Universe  [PDF]
Walter Petry
Journal of Modern Physics (JMP) , 2015, DOI: 10.4236/jmp.2015.68113
Abstract: A theory of gravitation in flat space-time is applied to homogeneous, isotropic cosmological models. There are non-singular cosmological models. A natural interpretation is a non-expanding universe. The redshift is an intrinsic effect and not a Doppler effect. The universe contains only energy in the beginning, i.e. no matter exists. In the course of time matter and radiation are created from energy where the whole energy is conserved. Matter increases with time but a certain time after the beginning of the universe the creation of matter is finished and the universe appears like a static one. A modified Hubble law is considered which may explain the high redshifts of objects in the universe without the assumption of dark energy.
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