Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 207 )

2018 ( 368 )

2017 ( 338 )

2016 ( 504 )

Custom range...

Search Results: 1 - 10 of 317598 matches for " Jürgen;Souza "
All listed articles are free for downloading (OA Articles)
Page 1 /317598
Display every page Item
Botulismo em bovinos de corte e leite alimentados com cama de frango
Dutra, Iveraldo S.;D?bereiner, Jürgen;Souza, Aires M.;
Pesquisa Veterinária Brasileira , 2005, DOI: 10.1590/S0100-736X2005000200009
Abstract: outbreaks of botulism caused by type c and d of the botulinum toxin are frequent in brazil, and are associated with bone chewing and ingestion of contaminated food and water. this paper reports the epidemiological, clinical, pathological and laboratorial aspects of 7 outbreaks of botulism in beef and dairy cattle fed with poultry litter, which occurred in the states of s?o paulo and minas gerais, 1989-2000. five outbreaks occurred in beef cattle herds, raised in confinement or under pasture conditions and supplemented with poultry litter, and 2 outbreaks occurred in dairy farms. from o total of 1,535 cattle supplemented regularily with poultry litter 455 animals (29.64%) died within 2 to 4 weeks. morbidity and mortality varied from 3.47 to 100% in the 7 outbreaks. in one of the farms the lethality was 60.52%, and in others more than 88.43%, reaching 100% in three farms. clinical signs were progressive paralysis, difficulties in moving, decubitus, normal alertness, decreased muscular tonus of tongue and tail, sialorrhoe and dyspnoe. at post-mortem examination of 30 cattle no noteable changes were observed. spores of clostridium botulinum were found in poultry litter samples collected on 7 farms. in liver, ruminal and intestinal fluid samples from 30 necropsied cattle botulinum toxin of type c (5) and d (9) or of the cd complex (1) were found in at least one of the samples collected from 15 animals, which confirms the clincial, pathological and epidemiological diagnosis of botulism.
Operator Splitting Method for Coupled Problems:Transport and Maxwell Equations  [PDF]
Jürgen Geiser
American Journal of Computational Mathematics (AJCM) , 2011, DOI: 10.4236/ajcm.2011.13019
Abstract: In this article a new approach is considered for implementing operator splitting methods for transport problems, influenced by electric fields. Our motivation came to model PE-CVD (plasma-enhanced chemical vapor deposition) processes, means the flow of species to a gas-phase, which are influenced by an electric field. Such a field we can model by wave equations. The main contributions are to improve the standard discretization schemes of each part of the coupling equation. So we discuss an improvement with implicit Runge- Kutta methods instead of the Yee’s algorithm. Further we balance the solver method between the Maxwell and Transport equation.
Development of a computer vision system to monitor pig locomotion  [PDF]
Jrgen Kongsro
Open Journal of Animal Sciences (OJAS) , 2013, DOI: 10.4236/ojas.2013.33038
Abstract: Avoiding lameness or leg weakness in pig production is crucial to reduce cost, improve animal welfare and meat quality. Detection of lameness detection by the use of vision systems may assist the farmer or breeder to obtain a more accurate and robust measurement of lameness. The paper presents a low-cost vision system for measuring the locomotion of moving pigs based on motion detection, frame-grabbing and multivariate image analysis. The first step is to set up a video system based on web camera technology and choose a test area. Secondly, a motion detection and data storage system are used to build a processing system of video data. The video data are analyzed measuring the properties of each image, stacking them for each animal and then analyze these stacks using multivariate image analysis. The system was able to obtain and decompose information from these stacks, where components could be extracted, representing a particular motion pattern. These components could be used to classify or score animals according to this pattern, which might be an indicator of lameness. However, further improvement is needed with respect to standardization of herding, test area and tracking of animals in order to have a robust system to be used in a farm environment.
The Motley World of “International Values”: Modes of Production on the World Market  [PDF]
Jrgen Sandemose
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.63058
Abstract: I venture to describe the world market from the viewpoint of those different extant modes of production which deliver commodities in “foreign” trade. The world market is, then, understood strictly in its basic feature, as a market for material products, all called commodities. The term “exchange”, which has to be used with some indeterminacy to begin with, is explained in greater detail as I proceed. In this regard, the most important sections are nos. 2 and 3. The term “modes of production” will also be clarified in due place, and primarily in Sections 9 and 10. I find such a concept necessary for an adequate background description of the products which are poured onto any market. I primarily analyze the capitalist mode of production through the concept of intensity of labour (cf. 4 and 9), which plays a main role even in Marx’s theory of the “modifications” of the law of value on the world market. Also, I find what is often labelled “Karl Marx’s theory of international values” to be correct in its foundations, and I will take a point of departure in it—especially apparent in sections 1, 2 and 3. A target for criticism in this article is the modern mainstream theory of “factors of production” in so far as it is found feasible for an analysis of the movements on the world market. This is briefly done in Section 8. In Section 6, I consider David Ricardo’s theory of “comparative advantages” as a counter-example to that theory. I use some terrain to show that the real historical and social background of the economic functioning of the so-called “factors”—capital, land and labour—must be a measuring rod for whether a factor theory is viable or not. To do this, I depend (cf. again Sections 9 and 10) to a high degree of Marx’s theory of those factors considered as forms of organized class forces—a viewpoint which played a central role in his preparing of the three volumes of Capital. While the Marxian theory insofar is adequate, it is also useful in analyzing the aborted or undeveloped state of those modes of production which, beneath the advanced capitalist one, supply the world market with material products. This ought to become clear especially in Sections 10 and 11. As my text expands, I try to show how the said inconsistency in the Ricardian model is based on
On the Exposition of the Transformation of Commodity-Values into Production Prices in the Third Volume of Capital—A Textual Analysis  [PDF]
Jrgen Sandemose
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.65098
Abstract: The article is about the exposition of the Karl Marx’s concept of production prices in his main work Capital. It focuses on the structure of the central text in question, Chapter 9 of the third volume, on “transformation [Verwandlung] of commodity-values into production prices”. The actual content and structure of the chapter has to some degree been overlooked or distorted in the literature. The aim of the article is to establish (or re-establish) a sound view of the chapter, freed from prejudices nurtured by—especially—a theory of price formation which, albeit “modernized” by i.a. Walras, dates back to Steuart and Ricardo. These prejudices have had an immense significance for misunderstandings of the Marxian theory of measure of value and standard of prices reflected in the text of the chapter mentioned. For this reason, the article is furnished with an Appendix, underlining the difficult situation for Marxist-minded research today. It should be noted that it is not an objective of the article to discuss any extant interpretation of Marx’s exposition. However, the paradigm of criticism that was introduced early in the 20th century by Ladislaus von Bortkiewicz is used as a perspective. Specific references—other than to Marx’s own texts—are held at a minimum in the article proper. I have chosen such a mode of approach because I find that misunderstandings of the chapter are evenly distributed among authors regardless of how their views on the “transformation” collide. On the other hand, such a consciousness of “misunderstandings” among commentators certainly does imply that the author should at least shortly clarify his own view of the main problems in the paradigmatic criticism mentioned above. In the first section, I point out the importance of Marx’s way of presenting his concept of the composition of capital. In the next, I make some remarks on the concept of the socially necessary labour time and its relation to abstract labour. In the third and fourth, I investigate Marx’s different models of analysis. In the fifth section, it will be shown how Marx, contrary to
Paradoxes, Self-Referentiality, and Hybrid Systems: A Constructive Approach  [PDF]
Jürgen Klüver
Open Journal of Philosophy (OJPP) , 2017, DOI: 10.4236/ojpp.2017.71004
Since the discovery of the paradoxes of self-referentiality or self-reference respectively logicians and mathematicians tried to avoid self-reference when constructing formal systems. Yet “real” complex systems like the mind are characterized by self-reference and can accordingly only be modeled by formal systems that are also basically self-referential. In this article I show that and how self-referential computer programs, understood as algorithmic formal systems, are not only possible but also since some time quite common in special branches of computer science. Examples for this argument are neural networks and so-called hybrid systems, i.e. combination of different sub systems. The hybrid system SOCAIN, a combination of a cellular automaton, a neural network and a genetic algorithm is an example for the fruitfulness of using self-reference in a systematic way. In particular, such systems consist of mutually dependent sub systems, i.e. form no static hierarchy.
Esporos e toxinas de Clostridium botulinum dos tipos C e D em cacimbas no Vale do Araguaia, Goiás
Souza, Aires M.;Marques, Dercino F.;D?bereiner, Jürgen;Dutra, Iveraldo S.;
Pesquisa Veterinária Brasileira , 2006, DOI: 10.1590/S0100-736X2006000300001
Abstract: the occurrence and distribution of clostridium botulinum spores and toxins type c and d in 300 ponds, used by cattle for drinking on 130 farms located in 12 municipalities of the rio araguaia valley, state of goiás, brazil, was evaluated. the presence of spores was determined indirectly by cultivation in culture medium, followed by inoculation and neutralization in mice of samples of the sediment from the bottom of the raining ponds, from superficial soil and from cattle feces collected to its circuit. the toxin presence was evaluated directly by inoculation in mice of the filtered sediment of the ponds, followed by the neutralization in mice with antitoxins c and d. the presence of c. botulinum spores was significantly more frequent (p<0,05) in the cattle feces (31%), when compared with the results of the superficial soil samples (19%) and the sediments (10%). botulinum toxins of type c and d or classified as belonging to the cd compound were detected in 6 samples (2%) of the 300 ponds. of the 130 worked farms, in 122 (93,85%) ponds clostridium botulinum spores or toxins were found in at least one of the researched variables, whilst ponds on only 8 (6,15%) farms did not present any contamination. age and depth of the ponds were associated with the frequency of detection of botulinum spores and toxins. the older and shallower the ponds were, the larger was the frequency of isolation of the spores and toxins. the contamination of the ponds in the araguaia valley with clostridium botulinum spores and toxins type c and d demonstrates the permanent and growing potential risk for the occurrence of botulism in cattle through drinking water.
Surtos de botulismo em bovinos no Brasil associados à ingest o de água contaminada
Dutra Iveraldo S.,D?bereiner Jürgen,Rosa Ivan V.,Souza Luiz A.A.
Pesquisa Veterinária Brasileira , 2001,
Abstract: Botulismo em bovinos resulta da ingest o de toxina previamente formada. No presente trabalho s o descritos sete surtos da intoxica o onde os dados clínico-patológicos, epidemiológicos e os achados laboratoriais indicaram a possível ingest o da toxina através da água contaminada. O coeficiente médio de mortalidade foi de 20,1%, com letalidade de 99,92%, e morbidade de 31,62%. Dos cerca de 9.000 bovinos envolvidos nos surtos, 2.844 morreram com quadro clínico predominantemente superagudo e agudo. A alta morbidade e mortalidade foram registradas num curto período de tempo e envolveram todas as categorias animais, com quadro clínico-patológico caracterizado por paresia e paralisia da musculatura da locomo o, degluti o e mastiga o e ausência de les es macroscópicas. As circunstancias em que ocorreram os surtos estiveram relacionadas com a existência de carca as de animais decompostas ou matéria organica vegetal na água de dessedenta o. Foram detectadas toxinas botulínicas C e/ou D nas cole es de água, nas vísceras e no soro sangüíneo de parte considerável dos materiais examinados.
Esporos e toxinas de Clostridium botulinum dos tipos C e D em cacimbas no Vale do Araguaia, Goiás
Souza Aires M.,Marques Dercino F.,D?bereiner Jürgen,Dutra Iveraldo S.
Pesquisa Veterinária Brasileira , 2006,
Abstract: Foram avaliadas a ocorrência e distribui o de esporos e toxinas de Clostridium botulinum tipos C e D em 300 cacimbas empregadas como bebedouro de bovinos em 130 propriedades rurais localizadas em 12 municípios do Vale do Araguaia, Estado de Goiás. A presen a de esporos foi determinada indiretamente pelo cultivo em meio de cultura, seguido da inocula o e neutraliza o em camundongo das amostras de sedimento do interior das cacimbas, e do solo superficial e fezes de bovinos, coletadas ao seu redor. A presen a de toxina foi avaliada diretamente pela inocula o em camundongo do sedimento filtrado das cacimbas, também seguida da neutraliza o em camundongo com antitoxinas C e D. A presen a de esporos de C. botulinum foi significativamente maior (p<0,05) nas fezes de bovinos (31%), quando comparadas com os resultados das amostras de solo superficial (19%) e dos sedimentos (10%). Foram detectadas toxinas botulínicas dos tipos C, D, ou classificadas como pertencentes ao complexo CD, em seis amostras (2%) das 300 cacimbas. Das 130 propriedades trabalhadas, em 122(93,85%) foram encontrados esporos ou toxinas de Clostridium botulinum em pelo menos uma das variáveis pesquisadas, enquanto somente 8(6,15%) n o apresentaram qualquer contamina o A idade e profundidade das cacimbas estiveram associadas com a freqüência de detec o de esporos e toxinas. Assim, quanto mais velhas e rasas, maior a freqüência do isolamento de esporos e toxinas. A contamina o das cacimbas do Vale do Araguaia goiano com esporos e toxinas do Clostridium botulinum tipos C e D demonstra o risco potencial permanente e crescente para a ocorrência da intoxica o botulínica de origem hídrica nos bovinos.
Treatment of chronic vulvovaginal candidiasis with posaconazole and ciclopiroxolamine  [PDF]
Hans-Jürgen Tietz
Health (Health) , 2010, DOI: 10.4236/health.2010.26077
Abstract: Therapy of chronic recurrent vulvovaginal can- didiasis (VVC) caused by Candida glabrata is still rare in comparison to C. albicans infection, but therapy remains more difficult. Combination therapy with topical antifungals may improve therapy outcome, but still standard agents as fluconazole or itraconazole often fail. Posaconazole is a new systemic triazole with a wide antifungal spectrum including rare Candida species. Up to now, no clinical trials with posa- conazole in chronic recurrent VVC have been undertaken. Here, first results of the application of a new therapy regimen consisting of oral posaconazole in combination with topical ciclopiroxolamine are presented. 15 patients with chronic recurrent VVC caused by C. glabrata have been treated. 14 of these patients experienced successful therapy, clinical and mycological cure 30 days after begin of therapy has been observed. Long-term results are promising, as in 4 patients clinical and mycologic cure persists for more than 1 year up to now.
Page 1 /317598
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.