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Sample records for weber buxb cactaceae

  1. New Alcamide and Anti-oxidant Activity of Pilosocereus gounellei A. Weber ex K. Schum. Bly. ex Rowl. (Cactaceae

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    Jéssica K. S. Maciel

    2015-12-01

    Full Text Available The Cactaceae family is composed by 124 genera and about 1438 species. Pilosocereus gounellei, popularly known in Brazil as xique-xique, is used in folk medicine to treat prostate inflammation, gastrointestinal and urinary diseases. The pioneering phytochemical study of P. gounellei was performed using column chromatography and HPLC, resulting in the isolation of 10 substances: pinostrobin (1, β-sitosterol (2, a mixture of sitosterol 3-O-β-d-glucopyranoside/stigmasterol 3-O-β-d-glucopyranoside (3a/3b, 132-hydroxyphaeophytin a (4, phaeophytin a (5, a mixture of β-sitosterol and stigmasterol (6a/6b, kaempferol (7, quercetin (8, 7′-ethoxy-trans-feruloyltyramine (mariannein, 9 and trans-feruloyl tyramine (10. Compound 9 is reported for the first time in the literature. The structural characterization of the compounds was performed by analyses of 1-D and 2-D NMR data. In addition, a phenolic and flavonol total content assay was carried out, and the anti-oxidant potential of P. gounellei was demonstrated.

  2. New Alcamide and Anti-oxidant Activity of Pilosocereus gounellei A. Weber ex K. Schum. Bly. ex Rowl. (Cactaceae).

    Science.gov (United States)

    Maciel, Jéssica K S; Chaves, Otemberg S; Brito Filho, Severino G; Teles, Yanna C F; Fernandes, Marianne G; Assis, Temilce S; Fernandes, Pedro Dantas; de Andrade, Alberício Pereira; Felix, Leonardo P; Silva, Tania M S; Ramos, Nathalia S M; Silva, Girliane R; de Souza, Maria de Fátima Vanderlei

    2015-12-22

    The Cactaceae family is composed by 124 genera and about 1438 species. Pilosocereus gounellei, popularly known in Brazil as xique-xique, is used in folk medicine to treat prostate inflammation, gastrointestinal and urinary diseases. The pioneering phytochemical study of P. gounellei was performed using column chromatography and HPLC, resulting in the isolation of 10 substances: pinostrobin (1), β-sitosterol (2), a mixture of sitosterol 3-O-β-d-glucopyranoside/stigmasterol 3-O-β-d-glucopyranoside (3a/3b), 13²-hydroxyphaeophytin a (4), phaeophytin a (5), a mixture of β-sitosterol and stigmasterol (6a/6b), kaempferol (7), quercetin (8), 7'-ethoxy-trans-feruloyltyramine (mariannein, 9) and trans-feruloyl tyramine (10). Compound 9 is reported for the first time in the literature. The structural characterization of the compounds was performed by analyses of 1-D and 2-D NMR data. In addition, a phenolic and flavonol total content assay was carried out, and the anti-oxidant potential of P. gounellei was demonstrated.

  3. Weber and Durkheim

    DEFF Research Database (Denmark)

    Jensen, Henrik S.

    Weber and Durkheim is a systematic , comparative analysis of the methodologies of Max Weber and Émile Durkheim.......Weber and Durkheim is a systematic , comparative analysis of the methodologies of Max Weber and Émile Durkheim....

  4. Flora do Pico do Jabre, Paraíba, Brasil: Cactaceae juss Flora of the Pico do Jabre, Paraíba, Brazil: Cactaceae juss

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    Emerson Antonio Rocha

    2002-01-01

    Full Text Available Neste trabalho realizou-se o tratamento sistemático das Cactaceae do Pico do Jabre, Paraíba, Brasil. A área de estudo é o ponto mais alto do Nordeste setentrional, constitui-se de um enclave de mata serrana, sendo considerada um dos poucos representantes da Paraíba incluídos no domínio da Mata Atlântica. No Pico do Jabre, as Cactaceae estão representadas por três gêneros e quatro espécies: Cereus jamacaru DC., Melocactus ernestii Vaupel, Pilosocereus chrysostele (VaupelByles & Rowley e Pilosocereus gounellei (F.A.C.WeberByles & Rowley.This work constitutes a systematic treatment of the Cactaceae family found in the "Pico do Jabre", Paraíba, Brazil. The study-area is the highest peak in the Northern part of Northeastern Brazil and consists of an isolated portion of humid forest, one of the few in the State of Paraíba, included in the the domain of the Atlantic Forest. In the "Pico do Jabre" the Cactaceae family is represented by three genera and four species: Cereus jamacaru DC., Melocactus ernestii Vaupel, Pilosocereus chrysostele (Vaupel Byles & Rowley and Pilosocereus gounellei (F.A.C.WeberByles & Rowley.

  5. Use and knowledge of Cactaceae in Northeastern Brazil

    Science.gov (United States)

    2013-01-01

    Background This study aimed to record the use, and knowledge that residents from São Francisco community (Paraiba, Brazil) have regarding the Cactaceae. Methods Semi-structured interviews were carried out with 118 informants; 50 men and 68 women. The cacti cited in this study were organised into use categories and use values were calculated. Differences in the values applied to species and use categories by men and women were compared via a G test (Williams). Results The nine species identified were: Cereus jamacaru DC., Melocactus bahiensis (Brtitton & Rose) Luetzelb., Nopalea cochenillifera (L.) Salm-Dyck., Opuntia ficus indica (L.) Mill, Opuntia stricta (Haw.) Haw., Pilosocereus gounellei (F.A.C. Weber) Byles & Rowley, Pilosocereus pachycladus F. Ritter, Tacinga inamoena (K. Schum) N.P. Taylor & Stuppy, Tacinga palmadora (Britton & Rose) N.P. Taylor & Stuppy. In total, 1,129 use citations were recorded, divided into 11 categories. The use value categories with the highest scores were forage (0.42), food (0.30) and construction (building) (0.25). P. pachycladus showed the greatest use value, versatility and number of plant parts used. Conclusion The survey showed that the Cactaceae is extremely important for several uses and categories attributed to different species. Apart from contributing to the ethnobotanical knowledge of the Cactaceae, another important focus of this study was to reinforce the necessity for further studies that record the traditional knowledge about this plant family, which has been lost in younger generations. PMID:23981911

  6. Educational Administration's Weber.

    Science.gov (United States)

    Gronn, Peter

    1994-01-01

    Discusses Max Weber's importance in Greenfield's work, particularly in Greenfield and Ribbins'"Greenfield on Educational Administration" (1993). In concentrating on human actors' subjective understanding, Greenfield was a faithful Weberian. However, he deviated from Weber by disavowing structural explanations of social and organizational…

  7. Max Weber and Robert Michels.

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    Scaff, Lawrence A.

    1981-01-01

    This paper investigates the unique intellectual partnership of Max Weber and Robert Michels, with particular emphasis on Weber's influence on Michel's inquiry into the sociology of parties and organization. Concludes with an evaluation of the import of Weber's critique of Michels' work. (DB)

  8. Palinología de los géneros de Cactaceae Maihuenia (Maihuenioideae y Pereskia (Pereskioideae de Argentina

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    Silvina S. Garralla

    2009-07-01

    Full Text Available Pollen grains of five species from two genera of the subfamilies Maihuenioideae and Pereskioideae (Cactaceae are described with the optical and scanning microscopes. Maihuenia (F.A.C.Weber K.Schum.: M. patagonica (Phil. Britton & Rose and M. poeppigii (Otto ex Pfeiff. F.A.C. Weber ex K. Schum. (Maihuenioideae and Pereskia Mill.: P. aculeata Mill., P. nemorosa Rojas Acosta and P. sacharosa Griseb. (Pereskioideae. The studied pollen grains of genera Maihuenia are prolate or spheroidal, medium or large sized, and Pereskia are all spheroidal and large sized. The apertures show variation in number: three to fourteen, colpate, with different pattern distribution and length of the colpus: Maihuenia has tricolpate grains and Pereskia 6-14 pantocolpate, some of them form syncolpos. The sculpture does not show marked differences between the species, which is microechinate and nanoechinate with perforations surrounded by a thickening. A key to determine the species of each genus is presented.

  9. Cactaceae

    NARCIS (Netherlands)

    Stoffers, A.L.

    1984-01-01

    Stemsucculents, branched or unbranched, columnar, globose or with thick flattened stems or internodes, usually with very small scale-like and awl-shaped, rarely foliaceous leaves; stems and internodes often with warts or ribs, bearing areoles in the axils of the often absent leaves. Areoles mostly c

  10. "Weber-tesen"

    DEFF Research Database (Denmark)

    Bruun, Hans Henrik

    2009-01-01

    Der er næppe nogen anden samfundsvidenskabelig tese der er blevet så berømt på et grundlag der som oftest er så misforstået som Max Webers (1864-1920) tese om sammenhængen mellem den protestantiske etik og kapitalismens ånd. Man har set ham som den der ”vender Marx på hovedet” ved at vise, at det...

  11. Estudios palinológicos de especies argentinas de los géneros Cereus, Cleistocactus, Denmoza, Echinopsis y Monvillea (Cactaceae, Cactoideae Palynological studies in Argentina species of the genera Cereus, Cleistocactus, Denmoza, Echinopsis and Monvillea (Cactaceae, Cactoideae

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    Elsa Lattar

    2010-06-01

    Full Text Available Se estudió la morfología del polen de 19 especies pertenecientes a cinco géneros (Cereus, Cleistocactus, Denmoza, Echinopsis y Monvillea de la subfamilia Cactoideae (Cactaceae en Argentina, fueron descriptas usando microscopio óptico y microscopio electrónico de barrido: Cereus aethiops Haw., C. argentinensis Britton & Rose, C. forbesii Otto ex C.F.Först., C. haenkeanus F.A.C. Weber ex K. Schum., C. stenogonus K. Schum., C. uruguayanus R. Kiesling; Cleistocactus baumannii (Lem. Lem., C. hyalacanthus (K. Schum. Gosselin, C. smaragdiflorus (F.A.C. Weber Britton & Rose; Denmoza rhodacantha (Salm-Dyck Britton & Rose; Echinopsis ancistrophora Speg., E. aurea Britton & Rose, E. leucantha (Gillies ex Salm-Dyck Walp., E. mamillosa Gürke, E. oxygona (Lynk Zucc., E. rhodotricha K. Schum., E. tubiflora (Pfeiff. & Zucc., Monvillea cavendischii (Monv. Britton & Rose y M. spegazzinii (F.A.C. Weber Britton & Rose. Los granos de polen de las especies analizadas son estenopalínicos, principalmente tricolpados, subesferoidales a prolatos, con téctum microperforado, espinulado, microespinulado o nanoespinulado. Encontrándose pequenas diferencias en forma y tamano. Se determinaron dos tipos polínicos: Polen Tipo Cereus argentinensis y Polen Tipo Echinopsis mamillosa. Se presenta una clave para identificar y distinguir los tipos citados.Pollen grains morphology of nineteen species belonging to five genera (Cereus, Cleistocactus, Denmoza, Echinopsis and Monvillea of the subfamily Cactoideae (Cactaceae in Argentina, are described using optical and scanning electron microscopy: Cereus aethiops Haw., C. argentinensis Britton & Rose, C. forbesii Otto ex C.F.Först., C. haenkeanus F.A.C. Weber ex K. Schum., C. stenogonus K. Schum., C. uruguayanus R. Kiesling; Cleistocactus baumannii (Lem. Lem., C. hyalacanthus (K. Schum. Gosselin, C. smaragdiflorus (F.A.C. Weber Britton & Rose; Denmoza rhodacantha (Salm-Dyck Britton & Rose; Echinopsis ancistrophora Speg., E

  12. Cactaceae do Vale do Rio Jequitinhonha (Minas Gerais Cactaceae of Jequitinhonha river valley (Minas Gerais

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    Nigel P Taylor

    1991-07-01

    Full Text Available Durante as primeiras coletas relacionadas ao Projeto "Cactaceae no Brasil Oriental", ficou provada a grande diversidade de espércies dessa família na região do vale médio do Rio Jequitinhonha, tendo sido visitadas as localidades de Itinga, Itaobim e Pedra Azul. Foram coletadas 21 espécies distribuídas entre os gêneros Pereskia, Opuntia, Tacinga, Pseudoacanthocereus, Arrojadoa, Brasilicereus, Cereus, Coleocephalocereus, Melocactus, Pilosocereus e Selenicereus, representando as três subfamílias de Cactaceae, cujas afinidades taxonômicas e padrões de distribuição geográfica são discutidos a seguir.During an initial visit to collect material for the projected "Cacti of Eastern Brazil", a remarkable great diversity of species of Cactaceae in the region of middle drainage of the Rio Jequitinhonha (mainly in the localities of Itinga, Itaobim and Pedra Azul was noted. Twenty one species in the genera Pereskia, Opuntia, Tacinga, Pseudocanthocereus, Arrojadoa, Brasilicereus, Cereus, Coloecephalocereus, Melocactus, Pilosocereus e Selenicereus representing all three subfamilies of Cactaceae were recorted. The phytogeographic affinities of the Cactaceae from this region are discussed.

  13. Max Weber - bedaget og aktuel

    DEFF Research Database (Denmark)

    Eistrup, Jens

    2010-01-01

    undervisningsartiklen introducerer en række af Max Webers centrale begreber om herredømme, bureaukrati, social handlen, rationalitet og profession. dernæst illustreres hvorledes Webers begreber kan tjene til at belyse spændingsfeltet mellem politik og profession i en socialfaglig kontekst....

  14. Sturge-Weber syndrome

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    Natarajan Manivannan

    2012-01-01

    Full Text Available Encephalotrigeminal angiomatosis (Sturge-Weber syndrome is a rather uncommon congenital condition characterized by the combination of venous angioma of the leptomeninges over the cerebral cortex with ipsilateral angiomatous lesions of the face, and sometimes the skull, jaws, and oral soft tissues. A case of portwine stain with intraoral gingival hemangioma is presented. There were no other systemic manifestations. Patient reported with a complaint of localized tumor-like swelling in gums. Based on the presence of sharply demarcated vascular lesion unilaterally on the face and with ipsilateral intraoral vascular hyperplasia in the lip and gingiva, a variant of encephalotrigeminal angiomatosis was diagnosed. Ultrasound Doppler flowmetry was used to determine the blood flow. Dental management included plaque control instructions, scaling, root planning, and excision of the lesion done under general anesthesia. Close follow-up and meticulous plaque control have kept the oral condition under fairly good control.

  15. [Sturge-Weber syndrome].

    Science.gov (United States)

    Maruani, Annabel

    2010-04-01

    Facial port-wine stains are capillary malformations, which can reveal, very rarely, Sturge-Weber syndrome (SWS). SWS is a severe neurocutaneous syndrome, which involves a facial port-wine stain reaching the first branch of trigeminal nerve (V1), ophthalmologic abnormalities (especially congenital glaucoma) and neurologic signs (seizure, mental retardation, hemiparesis). Neuroimaging (CT-scan/angio-magnetic resonance imaging [MRI]) provides the diagnosis of SWS, when it shows ipsilateral leptomeningeal angioma; the best age to perform the exam is not established. Extension to superior eyelid, to other territories of trigeminal nerve (V2, V3) or to the contralateral hemiface is statistically associated to SWS. When a new-born has a facial port-wine stain reaching V1, ophthalmologic examination must be performed in the first months of life, as well as neuroimaging (at the age of 6-12 months, earlier in case of neurologic signs); a treatment of the port-wine stain by pulsed dye laser must also be considered. (c) 2010. Published by Elsevier Masson SAS.

  16. Genetics Home Reference: Parkes Weber syndrome

    Science.gov (United States)

    ... because of their color are sometimes called "port-wine stains." In people with Parkes Weber syndrome , capillary ... Parkes Weber syndrome occur in people with no history of the condition in their family. These cases ...

  17. Croatian Chemists. II. Karlo Weber

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    Soljačić, I.

    2009-01-01

    Full Text Available An account of Professor Karlo Weber's life is given. He was born January 25th, 1902 in Mramorak (Vojvodina and died September 1st, 1978 in Zagreb. He studied chemistry and physics in Graz and Freiburg and obtained his Ph. D. at the University of Graz in 1926. The first part of his career from 1927 to 1945 Weber spent at the Department of Chemical Technology, Technical Faculty. His advancement from assistantship to full-professorship was not smooth. After May 8th, 1945, Weber barely saved his life and on September 5th, 1945 was formally dismissed from the Technical Faculty. He was out of a job, but soon was employed in the bookstore Juraj Križanić first as a staff-member and then as a salesman. Weber was dismissed from this job on June 30th, 1946. Two weeks later, he joined the Department of Forensic Medicine, Faculty of Medicine in Zagreb. He again started at the bottom of the hierarchy as a low-paid lab-assistant, but being a very able researcher he advanced relatively quickly to the position of full research professor in 1960.Weber was a physical chemist whose main research interest were chemical kinetics, photochemistry and optical phenomena (luminescence, fluorescence, photography. The more important part of his research work was published while he was at the Department of Chemical Technology. In the Department of Forensic Medicine, Weber encountered research different kind of problems – problems from forensic medicine and toxicology. This change in research environment did not prevent Weber in his productivity, he published 159 research papers, more than 70 technical papers, and 4 monographs. Among them especially prominent is Inhibitorwirkungen – Eine Darstellung der Negative Katalyse in Lösungen (Ferdinand Enke-Verlag, Stuttgart, 1938., which was the first monograph on the subject.Under his supervision, 13 M. Sc. theses and 24 Ph. D. theses were produced. Data for the Ph. D. theses are given (although incomplete. Weber is

  18. Further naturalised Cactaceae in northeastern Iberian Peninsula

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    Dana Sánchez, Elías D.

    2006-06-01

    Full Text Available During the floristic work carried out in 2004 in the Baix Camp region of Tarragona (NE Spain we found four new species of alien naturalised Cactaceae. Of these, three are reported for the second time from Europe and the other is new to Catalonia region. Southern Catalonia, with eleven species of Cactaceae, harbours the highest diversity of the family in Europe. Our results demonstrate that this diversity is even higher than previously believed. The introduction of these exotic taxa is, once again, due to the development of gardening based exclusively on foreign elements, to the unscrupulous and uncontrolled dumping of their remains in the natural environment, and to the existence of a favourable climate.Durante la campaña de prospección florística llevada a cabo en 2004 por la comarca del Baix Camp (Tarragona, NE de España hemos encontrado cuatro especies de cactáceas alóctonas naturalizadas. De ellas, tres se citan por segunda vez de Europa y la otra es nueva para Cataluña. Nuestros resultados aumentan aún más la diversidad de cactáceas del sur de Cataluña que, con once especies, es la mayor de toda Europa. La introducción de estos táxones exóticos que ahora damos a conocer se debe, una vez más, al desarrollo de una jardinería basada casi exclusivamente en elementos foráneos, en el vertido desaprensivo e incontrolado de sus restos en el medio natural y en la existencia de una climatología muy favorable.

  19. Weber, Durkheim, and the comparative method.

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    Kapsis, R E

    1977-10-01

    This essay compares and contrasts the means by which Durkheim and Weber dealt with methodological issues peculiar to the comparative study of societies, what Smelser has called "the problem of sociocultural variability and complexity." More specifically, it examines how Weber and Durkheim chose appropriate comparative units for their empirical studies. The approaches that Weber and Durkheim brought to theproblem of cross-cultural comparison have critical implications for more current procedures used in the comparative study of contemporary and historical societies.

  20. Max Weber and the Iron Cage of Technology

    Science.gov (United States)

    Maley, Terry

    2004-01-01

    Max Weber is seen by mainstream social scientists as a sociologist, social theorist, and theorist of bureaucracy. In this reassessment of Weber's social science and its methodology, it is suggested that Weber can also be seen as a compelling early 20th-century critic of science and technology. The theme of technology, and Webers ambivalence about…

  1. PALINOLOGÍA DE LOS GÉNEROS DE CACTACEAE MAIHUENIA (MAIHUENIOIDEAE Y PERESKIA (PERESKIOIDEAE DE ARGENTINA Palynology of the genera of Cactaceae Maihuenia (Maihuenioideae and Pereskia (Pereskioideae from Argentina

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    Graciela A. Cuadrado

    2010-07-01

    Full Text Available

    Fueron estudiados y descriptos con microscopio óptico y microscopio electrónico de barrido, los granos de polen de cinco especies argentinas de dos géneros, Maihuenia (F.C.C.Weber K. Schum. y Pereskia Mill., pertenecientes a las subfamilias Maihuenioideae y Pereskioideae (Cactaceae. Maihuenia patagonica (Phil. Britton & Rose, M. poeppigii (Otto ex Pfeiff. F.A.C. Weber ex K. Schum., (Maihuenioideae, Pereskia aculeata Mill., P. nemorosa Rojas Acosta y P. sacharosa Griseb. (Pereskioideae. Los granos de polen de Maihuenia son prolatos o esferoidales, medianos o grandes y los de Pereskia son todos esferoidales y grandes. Las aperturas muestran variación en número, tres a catorce, pero todas son colpadas y tienen diferente modelo de ubicación: Maihuenia tiene granos tricolpados y Pereskia 6-14 pantocolpados, algunos de éstos forman sincolpos. La escultura no muestra marcadas diferencias entre las especies, ella es microequinada y nanoequinada con perforaciones rodeadas de un engrosamiento. Se presenta una clave para diferenciar las especies de cada género.
    Pollen grains of five species from two genera of the subfamilies Maihuenioideae and Pereskioideae (Cactaceae are described with the optical and scanning microscopes.
    Maihuenia (F.A.C.Weber K.Schum.: M. patagonica (Phil. Britton & Rose and M. poeppigii (Otto ex Pfeiff. F.A.C. Weber ex K. Schum. (Maihuenioideae and Pereskia Mill.: P. aculeata
    Mill., P. nemorosa Rojas Acosta and P. sacharosa Griseb. (Pereskioideae. The studied pollen grains of genera Maihuenia are prolate or spheroidal, medium or large sized, and Pereskia are all spheroidal and large sized. The apertures show variation in number: three to fourteen, colpate, with different pattern distribution and

  2. The Battle that Weber Lost: Exploring The Fate of Weber's Contribution to the Methodenstreit

    DEFF Research Database (Denmark)

    Jagd, Søren

    This paper explores the outcome of Max Weber's contribution to the Methodenstreit between teh Austrian marginal utility economists and teh German historicist economists in his methodological writings. The main conclusion is the neither economists nor sociologists have found Weber's contribution...... worth a closer look. The result is that Weber's contribution never has found its way int the methodological discussions in economics as well as into economic sociology...

  3. Sturge-Weber syndrome: a case report

    OpenAIRE

    Luiz Felipe G. dos Santos; Joanna G. da Conceição; Thaís Pimentel de Sá Bahia; Vanessa de A. S. Silva; Maria Eliza Barbosa Ramos; Mônica Israel

    2011-01-01

    Introduction: The Sturge-Weber Syndrome, also known as encephalotrigeminal angiomatosis, is a rare vascular neurocutaneous alteration. The main clinical features of this syndrome are facial vascular cutaneous naevus, usually unilateral, which often follows the outline distribution of trigeminal nerve. Objective: To report a clinical case of Sturge-Weber Syndrome in a 29-yeral-old male patient who presented oral manifestations related to the syndrome. Case report and conclusion: The patient re...

  4. Anatomical investigation on Cactaceae Juss.: a historical retrospect

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    Galina V. Kalashnyk

    2014-04-01

    Full Text Available Cactaceae consists of perennial stem succulents with diverse morphology. Due the distinctive structure and form the interest of researchers to this group of plants is increasing nowadays. The present paper provides an overview of published data concerning anatomical studies on the family Cactaceae since the mid-nineteenth century to our days. It is important to consider that recent interest in this field does not reduce, while the number of studies dealing with the structure and features of seedlings, the effect of various environmental factors on them is uprising. Such studies have a great practical importance for introduction and reintroduction of cacti, as well as for determination of their adaptive characteristics to environmental conditions.

  5. A Novel Method of Genomic DNA Extraction for Cactaceae

    OpenAIRE

    Fehlberg, Shannon D.; Jessica M. Allen; Kathleen Church

    2013-01-01

    • Premise of the study: Genetic studies of Cactaceae can at times be impeded by difficult sampling logistics and/or high mucilage content in tissues. Simplifying sampling and DNA isolation through the use of cactus spines has not previously been investigated. • Methods and Results: Several protocols for extracting DNA from spines were tested and modified to maximize yield, amplification, and sequencing. Sampling of and extraction from spines resulted in a simplified protocol overall and compl...

  6. Max Weber entre liberalismo y republicanismo

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    Villacañas Berlanga, José Luis

    2005-12-01

    Full Text Available This article attempts to analyze the differences between social democracy and political democracy as modern processes, as these were understood by Max Weber. The archetype of modernity resides, from this point of view, in a convergence of both processes, as occurred in countries like the USA and Great Britain. Weber's diagnosis is that, whereas social democracy can be organized around liberal arguments, political democracy cannot advance without republican concepts like those of virtue, rigour, responsability and representation. For Weber, these values could only become present in Germany thanks to an adequate and democratic reception of Nietzsche, and in some way this reception could make sense of the former's work.

    Este artículo pretende analizar las diferencias entre democracia social y democracia política como procesos modernos, tal y como fueron comprendidos por Max Weber. Lo arquetípico de la modernidad reside, desde este punto de vista, en una convergencia de ambos procesos, tal y como se dio en países como USA y Gran Bretaña. El diagnóstico de Weber es que, mientras la democracia social puede organizarse sobre argumentos liberales, la democracia política no puede avanzar sin conceptos republicanos como el de virtud, rigor, responsabilidad y representación. Para Weber, estos valores sólo podrían hacerse presentes en Alemania a partir de una recepción adecuada y democrática de Nietzsche y en cierto modo esta recepción daría sentido a su obra.

  7. Enseñanza de Max Weber

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    Alfonso Piza

    2009-08-01

    Full Text Available El presente trabajo recose en sintesis el fruto de mi experiencia como profesor dela asignatura sobre MAX WEBER a lo largo de cuatro años.Quizás rinda mayor provecho pera quien desee lograr una visión amplia de los problemas que plantea un sociólogo de la magnitud de Weber, no así para aquellos que quieran abordar problemáticas específicas implícitas en su obra.

  8. Characterization of calcium oxalate biominerals in Pereskia species (Cactaceae).

    Science.gov (United States)

    Monje, Paula V; Baran, Enrique J

    2009-01-01

    Calcium oxalate druses were isolated from the stems and leaves of six Pereskioideae family members and investigated by infrared spectroscopy, showing that in all samples the biomineral was present in the form of whewellite, CaC2O4 x H2O. As Pereskia is thought to represent the "ancestral" condition of the leafless stem-succulent cacti, these results suggest that the biomineralization of calcium oxalate in Cactaceae represents a primitive characteristic of the group and also support a close genetic relationship between Pereskia and Opuntia.

  9. Weber e o advento do novo

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    Renan Springer de Freitas

    2010-01-01

    Full Text Available Établir la distinction entre le vieux et le neuf et montrer comment on passe de l'un à l'autre sont des enjeux primordiaux dans la sociologie de la religion de Max Weber. Dans cet article, on montre comment Weber les a traités ainsi que ses difficultés à les affronter. Pour Weber, la transition du vieux vers le neuf exige une certaine "transformation de l'âme humaine", ou bien une rupture tranchée avec les types de mentalités tenues pour traditionnelles. On propose que cette conception l'a mené à considérer des ruptures inexistantes (par exemple entre les esprits luthériens et calvinistes et à ne pas s'apercevoir de ruptures importantes (par exemple, entre la tolérance particulière à nos jours et celle d'époques précédentes. On conclut qu'il y a une analogie entre la sociologie webérienne de la religion et la physique aristotélicienne et que, à la lumière de cette analogie, on peut mieux comprendre ce que Weber veut signifier lorsqu'il affirme que des transitions historiquement significatives demandent une "transformation de l'âme humaine".

  10. Rat Model of Parkes Weber Syndrome.

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    Krzysztof Bojakowski

    Full Text Available The Parkes Weber syndrome is a congenital vascular malformation, characterized by varicose veins, arterio-venous fistulas and overgrown limbs. No broadly accepted animal model of Parkes Weber syndrome has been described. We created side-to-side arterio-venous fistula between common femoral vessels with proximal non-absorbable ligature on common femoral vein limiting the enlargement of the vein diameter in Wistar rats. Contralateral limb was sham operated. Invasive blood pressure measurements in both iliac and inferior cava veins were performed in rats 30 days after fistula creation. Tight circumference and femoral bone length were measured. Histopathology and morphology of soleus muscle, extensor digitorum longus muscle, and the common femoral vessel were analyzed. 30 days following arterio-venous fistula creation, a statistically significant elevation of blood pressure in common iliac vein and limb overgrowth was observed. Limb enlargement was caused by muscle overgrowth, varicose veins formation and bone elongation. Arterio-venous fistula with proximal outflow limitation led to significant increase of femoral vein circumference and venous wall thickness. Our study indicates that the described rat model mimics major clinical features characteristic for the human Parkes Weber syndrome: presence of arterio-venous fistula, venous hypertension and dilatation, varicose veins formation, and the limb hypertrophy. We reveal that limb overgrowth is caused by bone elongation, muscle hypertrophy, and venous dilatation. The newly established model will permit detailed studies on the mechanisms underlying the disease and on the efficacy of novel therapeutic strategies for the Parkes Weber syndrome treatment.

  11. Acercamiento a la actualidad de Max Weber

    Directory of Open Access Journals (Sweden)

    Javier E. Ortiz Cárdenas

    2012-01-01

    Full Text Available El acercamiento a Weber, como científico social, nos permite encontrar aportaciones teóricas, de método, enfoques y estudios comparativos para entender el funcionamiento de instituciones actuales, tal es el cometido del presente artículo.

  12. The polymorphic weddellite crystals in three species of Cephalocereus (Cactaceae).

    Science.gov (United States)

    Bárcenas-Argüello, María-Luisa; Gutiérrez-Castorena, Ma C-del-Carmen; Terrazas, Teresa

    2015-10-01

    Mineral inclusions in plant cells are genetically regulated, have an ecological function and are used as taxonomic characters. In Cactaceae, crystals in epidermal and cortical tissues have been reported; however, few studies have conducted chemical and morphological analyses on these crystals, and even fewer have reported non-mineral calcium to determine its systematic value. Cephalocereus apicicephalium, C. totolapensis and C. nizandensis are Cactaceae species endemic to the Isthmus of Tehuantepec, Mexico with abundant epidermal prismatic crystals. In the present study, we characterize the mineral cell inclusions, including their chemical composition and their morphology, for three species of Cephalocereus. Crystals of healthy branches of the three species were isolated and studied. The crystals were identified by X-ray diffraction (XRD), their morphology was described using a petrographic and scanning electron microscope (SEM), and their elemental composition was measured with Energy Dispersive X-ray (EDXAR). The three species synthesized weddellite with different degrees of hydration depending on the species. The optical properties of calcium oxalate crystals were different from the core, which was calcium carbonate. We observed a large diversity of predominantly spherical forms with SEM. EDXAR analysis detected different concentrations of Ca and significant amounts of elements, such as Si, Mg, Na, K, Cl, and Fe, which may be related to the edaphic environment of these cacti. The occurrence of weddellite is novel for the genus according to previous reports. The morphological diversity of the crystals may be related to their elemental composition and may be a source of phylogenetic characters.

  13. A PROJECTION-TYPE METHOD FOR SOLVING VARIOUS WEBER PROBLEMS

    Institute of Scientific and Technical Information of China (English)

    Jian-lin Jiang; Bo Chen

    2006-01-01

    This paper investigates various Weber problems including unconstrained Weber problems and constrained Weber problems under l1,l2 and l∞-norms. First with a transformation technique various Weber problems are turned into a class of monotone linear variational inequalities. By exploiting the favorable structure of these variational inequalities, we present a new projection-type method for them. Compared with some other projection-type methods which can solve monotone linear variational inequality, this new projection-type method is simple in numerical implementations and more efficient for solving this class of problems; Compared with some popular methods for solving unconstrained Weber problem and constrained Weber problem, a singularity would not happen in this new method and it is more reliable by using this new method to solve various Weber problems.

  14. Sturge-Weber Syndrome: A Review.

    Science.gov (United States)

    Higueros, E; Roe, E; Granell, E; Baselga, E

    2017-06-01

    Sturge-Weber syndrome is a sporadic congenital neurocutaneous disorder caused by a somatic activating mutation in GNAQ; it affects 1 in every 20,000 to 50,000 newborns. It is characterized by a facial Port-wine stain, leptomeningeal angiomatosis, and glaucoma. Seizures are the most common neurological manifestation and typically present in the first months of life. Glaucoma may be present at birth or develop later. Neuroimaging studies show leptomeningeal angiomatosis, supporting diagnosis. Standard treatment for Sturge-Weber syndrome includes laser treatment for the Port-wine stain, anticonvulsants, and medical or surgical treatment for the glaucoma. Prognosis depends on the extent of leptomeningeal involvement and the severity of the glaucoma. Copyright © 2016 AEDV. Publicado por Elsevier España, S.L.U. All rights reserved.

  15. Sturge -Weber Syndrome - Three Classic variants

    Directory of Open Access Journals (Sweden)

    R S Sathawane

    2006-01-01

    Full Text Available Sturge-Weber syndrome (SWS, also known as encephalotrigeminal angiomatosis, a sporadic, non-familial, congenital disorder consists of congenital hamartomatous malformations that may affect the eye, skin and central nervous system at different times. Sturge-Weber syndrome is classified as 1 Complete trisymptomatic: - when all three organ systems i.e. eye, skin and CNS are involved 2 Incomplete bisymptomatic:- when the involvement is either oculocutaneous or neurocutaneous, and 3 Incomplete monosymptomatic: when there is only neural or cutaneous involvement. Failure of proper vascular development is believed to be the most likely cause of this condition. The malformed blood vessels or hemangiomas may lead to port-wine stain, epilepsy and glaucoma depending on its location. Three classic variants with typical findings are discussed.

  16. STURGE - WEBER SYNDROME: REVIEW OF LITERATURE

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    Mamatha

    2015-10-01

    Full Text Available The Sturge - Weber syndrome is a sporadic congenital neurocutaneous disorder with port - wine stain affecting the facial skin in the distribution of the ophthalmic branch of the trigeminal nerve, abnormal capillary venous vessels in the leptomeninges of the brain and choroid resulting in glaucoma, seizures, st roke and intellectual disability . [1] Sturge - Weber syndrome and port - wine stains are believed to be caused by Somatic Mutation in GNAQ. [2] We present a case of 18 years old patient of SWS for its rarity of occurrance and the difficulties posed in the management of this condition. The aim of this article is to stress the importance of this condition that may be overlooked in the diagnosis.

  17. Ictal SPECT in Sturge-Weber syndrome

    OpenAIRE

    O. Bilgin; Vollmar, C.; Peraud, A.; la Fougere, C.; Beleza, P; Noachtar, S.

    2008-01-01

    We report on a patient with right-sided Sturge-Weber syndrome (SWS), in whom earlier functional hemispherectomy failed. Subtraction of ictal and interictal single-photon-emission-computed-tomography (SPECT) superimposed on individual MRI showed a right fronto-orbital hyperperfusion, with a left-sided EEG seizure pattern. Ictal SPECT supported our assumption that right frontal originated seizure pattern propagated to left hemisphere via the remaining right frontal bridge. Right orbito-frontal ...

  18. A Novel Method of Genomic DNA Extraction for Cactaceae

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    Shannon D. Fehlberg

    2013-03-01

    Full Text Available Premise of the study: Genetic studies of Cactaceae can at times be impeded by difficult sampling logistics and/or high mucilage content in tissues. Simplifying sampling and DNA isolation through the use of cactus spines has not previously been investigated. Methods and Results: Several protocols for extracting DNA from spines were tested and modified to maximize yield, amplification, and sequencing. Sampling of and extraction from spines resulted in a simplified protocol overall and complete avoidance of mucilage as compared to typical tissue extractions. Sequences from one nuclear and three plastid regions were obtained across eight genera and 20 species of cacti using DNA extracted from spines. Conclusions: Genomic DNA useful for amplification and sequencing can be obtained from cactus spines. The protocols described here are valuable for any cactus species, but are particularly useful for investigators interested in sampling living collections, extensive field sampling, and/or conservation genetic studies.

  19. Cytotoxic components of Pereskia bleo (Kunth) DC. (Cactaceae) leaves.

    Science.gov (United States)

    Malek, Sri Nurestri Abdul; Shin, Sim Kae; Wahab, Norhanom Abdul; Yaacob, Hashim

    2009-05-06

    Dihydroactinidiolide (1) and a mixture of sterols [campesterol (2), stigmasterol (3) and beta-sitosterol (4)], together with the previously isolated individual compounds beta-sitosterol (4), 2,4-di-tert-butylphenol (5), alpha-tocopherol (6), phytol (7) were isolated from the active ethyl acetate fraction of Pereskia bleo (Kunth) DC. (Cactaceae) leaves. Cytotoxic activities of the above mentioned compounds against five human carcinoma cell lines, namely the human nasopharyngeal epidermoid carcinoma cell line (KB), human cervical carcinoma cell line (CasKi), human colon carcinoma cell line (HCT 116), human hormone-dependent breast carcinoma cell line (MCF7) and human lung carcinoma cell line (A549); and non-cancer human fibroblast cell line (MRC-5) were investigated. Compound 5 possessed very remarkable cytotoxic activity against KB cells, with an IC(50 )value of 0.81microg/mL. This is the first report on the cytotoxic activities of the compounds isolated from Pereskia bleo.

  20. A novel method of genomic DNA extraction for Cactaceae1

    Science.gov (United States)

    Fehlberg, Shannon D.; Allen, Jessica M.; Church, Kathleen

    2013-01-01

    • Premise of the study: Genetic studies of Cactaceae can at times be impeded by difficult sampling logistics and/or high mucilage content in tissues. Simplifying sampling and DNA isolation through the use of cactus spines has not previously been investigated. • Methods and Results: Several protocols for extracting DNA from spines were tested and modified to maximize yield, amplification, and sequencing. Sampling of and extraction from spines resulted in a simplified protocol overall and complete avoidance of mucilage as compared to typical tissue extractions. Sequences from one nuclear and three plastid regions were obtained across eight genera and 20 species of cacti using DNA extracted from spines. • Conclusions: Genomic DNA useful for amplification and sequencing can be obtained from cactus spines. The protocols described here are valuable for any cactus species, but are particularly useful for investigators interested in sampling living collections, extensive field sampling, and/or conservation genetic studies. PMID:25202521

  1. Level of environmental threat posed by horticultural trade in Cactaceae.

    Science.gov (United States)

    Novoa, Ana; Le Roux, Johannes J; Richardson, David M; Wilson, John R U

    2017-01-11

    Ornamental horticulture has been identified as an important threat to plant biodiversity and the major pathway for plant invasions worldwide. In this context, the family Cactaceae is particularly interesting and challenging for three main reasons-it is considered the fifth most threatened major taxonomic group in the world; several cactus species are amongst the most widespread and damaging invasive species; and Cactaceae is one of the most popular horticultural plant groups. Based on CITES trade data and the eleven main auction sites selling cacti on the internet we document a substantial global trade from and to almost all continents. While less than 20 % of this trade involves threatened species, and less than 3% involves known invasive species, many species are sold without a valid scientific name. Importantly, however, hardly any of the globally traded cacti are collected from wild populations. In order to provide an in-depth look at the dynamics of the industry, we surveyed the businesses involved in the cactus trade in South Africa (one of the main hotspots of cactus trade and invasions). Despite a large commercial network, all South African imports (of which only 15 % and 1.5 % were of species listed as threatened and invasive, respectively) came from the same source. We purchased seeds of every available species and, based on DNA-barcoding techniques, could only identify 24 % of the species to genus level. If trade restrictions are placed on the small proportion of cacti that are invasive and there is no major increase in harvesting of native populations, the commercial cactus horticultural trade will pose a negligible environmental threat. However, there are currently no effective methods for easily identifying which cacti are traded, and both the illicit harvesting of cacti from the wild and the informal trade in invasive taxa pose on-going conservation challenges. This article is protected by copyright. All rights reserved.

  2. Clinical features of Sturge-Weber syndrome

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    Palheta Neto, Francisco Xavier

    2008-12-01

    Full Text Available Introduction: The Syndrome of Sturge-Weber is a rare condition of congenital development, and is characterized by a neurocutaneous disorder with angiomas wrapping the leptomeninges and the face skin, mainly in the course of ophthalmic (V1 and maxillary (V2 branches of the trigeminal nerve. Objective: To review the literature about the Sturge-Weber Syndrome with emphasis on the current aspects. Method: The following databases were searched: EMedicine, Encyclopedia of Medicine, FindArticles, LILACS, MEDLINE, Merck Manuals On-Line Medical Library and Scielo, and the searches applied the terms: Sturge-Weber Syndrome, neurocutaneous syndromes, encephalo-trigeminal angiomatosis, nevus flammeus, in articles published between 1991 and 2007. Literature's Review: The most characteristic clinical statement is the presence, since the birth, of nevus flammeus, that generally reaches one half of the face and may stretch out up to the neck; in addition, other clinical manifestations may be present, like the corticocerebral angiomatosis, cerebral calcifications, epilepsy, ocular and buccal affections and mental retardation. The diagnosis is established by means of the inquiry of neurological and ophthalmic alterations in patients with a characteristic nevus flammeus, allied to the clinical data of complementary exams such as Computerized Tomography. The treatment consists basically of controlling the already confirmed clinical manifestations and preventing from the appearing of other alterations, mainly buccal and ocular. Conclusion: This syndrome is not much frequent, but it needs to be early diagnosed, since it brings a series of complications to its carriers when not treated, specially because of reaching the Nervous Central System. The health professionals have to be suitably able to recognize its characteristic signs and symptoms, and so improve the quality of life of these patients.

  3. Sturge-Weber syndrome: A case study.

    Science.gov (United States)

    Welty, Linda D

    2006-01-01

    Sturge-Weber syndrome (SWS) is a rare, sporadic, progressive, congenital syndrome. In its complete trisymptomatic form, SWS is physically characterized by port-wine stains over the trigeminal area, leptomeningeal angiomas usually over the parieto-occipital region, and eye abnormalities. Clinical manifestation for infants with SWS depends on the affected organs, but can include seizures, mental retardation, and glaucoma. This article begins with a case presentation of an infant with SWS and then presents the etiology, embryology, pathophysiology, clinical presentation, management, and prognosis of SWS.

  4. Max Weber's Critique of the Bureaucratisation of Education

    Science.gov (United States)

    Madan, Amman

    2014-01-01

    In this commentary, the author discusses the critique by Max Weber and his views on bureaucratisation of education. The modern school, said Max Weber (1864-1920) over a hundred years ago, has as its educational ideal the bureaucrat and no longer the cultivated elite of older times. The shift to modernity and to its characteristic institution, the…

  5. Klippel-Trenaunay-Weber Syndrome:A case report

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Kyung Nam; Lee, Sun Wha; Yoon, Yup; Lim, Jae Hoon [Kyung Hee University Hopital, Seoul (Korea, Republic of)

    1990-10-15

    The Klippel-Trenauna-Weber Syndrome is characterized by a classical triad that includes unilateral cutaneous capillary hemangiomas, varicose veins, and local gigantism with both soft tissue and osseous overgrowth. Authors have experience on case of Klippel-Trenaunay-Weber Syndrome with hemangiomas of ipsilateral scrotum and foot.

  6. Binary droplet collision at high Weber number.

    Science.gov (United States)

    Pan, Kuo-Long; Chou, Ping-Chung; Tseng, Yu-Jen

    2009-09-01

    By using the techniques developed for generating high-speed droplets, we have systematically investigated binary droplet collision when the Weber number (We) was increased from the range usually tested in previous studies on the order of 10 to a much larger value of about 5100 for water (a droplet at 23 m/s with a diameter of 0.7 mm). Various liquids were also used to explore the effects of viscosity and surface tension. Specifically, beyond the well-known regimes at moderate We's, which exhibited coalescence, separation, and separation followed by satellite droplets, we found different behaviors showing a fingering lamella, separation after fingering, breakup of outer fingers, and prompt splattering into multiple secondary droplets as We was increased. The critical Weber numbers that mark the boundaries between these impact regimes are identified. The specific impact behaviors, such as fingering and prompt splattering or splashing, share essential similarity with those also observed in droplet-surface impacts, whereas substantial variations in the transition boundaries may result from the disparity of the boundary conditions at impacts. To compare the outcomes of both types of collisions, a simple model based on energy conservation was carried out to predict the maximum diameter of an expanding liquid disk for a binary droplet collision. The results oppose the dominance of viscous drag, as proposed by previous studies, as the main deceleration force to effect a Rayleigh-Taylor instability and ensuing periphery fingers, which may further lead to the formations of satellite droplets.

  7. Non-concerted ITS evolution in Mammillaria (Cactaceae).

    Science.gov (United States)

    Harpke, Doerte; Peterson, Angela

    2006-12-01

    Molecular studies of 21 species of the large Cactaceae genus Mammillaria representing a variety of intrageneric taxonomic levels revealed a high degree of intra-individual polymorphism of the internal transcribed spacer region (ITS1, 5.8S rDNA, ITS2). Only a few of these ITS copies belong to apparently functional genes, whereas most are probably non-functional (pseudogenes). As a multiple gene family, the ITS region is subjected to concerted evolution. However, the high degree of intra-individual polymorphism of up to 36% in ITS1 and up to 35% in ITS2 suggests a non-concerted evolution of these loci in Mammillaria. Conserved angiosperm motifs of ITS1 and ITS2 were compared between genomic and cDNA ITS clones of Mammillaria. Some of these motifs (e.g., ITS1 motif 1, 'TGGT' within ITS2) in combination with the determination of GC-content, length comparisons of the spacers and ITS2 secondary structure (helices II and III) are helpful in the identification of pseudogene rDNA regions.

  8. Cytotoxic Components of Pereskia bleo (Kunth DC. (Cactaceae Leaves

    Directory of Open Access Journals (Sweden)

    Sri Nurestri Abdul Malek

    2009-05-01

    Full Text Available Dihydroactinidiolide (1 and a mixture of sterols [campesterol (2, stigmasterol (3 and β-sitosterol (4], together with the previously isolated individual compounds β-sitosterol (4, 2,4-di-tert-butylphenol (5, α-tocopherol (6, phytol (7 were isolated from the active ethyl acetate fraction of Pereskia bleo (Kunth DC. (Cactaceae leaves. Cytotoxic activities of the above mentioned compounds against five human carcinoma cell lines, namely the human nasopharyngeal epidermoid carcinoma cell line (KB, human cervical carcinoma cell line (CasKi, human colon carcinoma cell line (HCT 116, human hormone-dependent breast carcinoma cell line (MCF7 and human lung carcinoma cell line (A549; and non-cancer human fibroblast cell line (MRC-5 were investigated. Compound 5 possessed very remarkable cytotoxic activity against KB cells, with an IC50 value of 0.81µg/mL. This is the first report on the cytotoxic activities of the compounds isolated from Pereskia bleo.

  9. Gynogenesis in the vine cacti Hylocereus and Selenicereus (Cactaceae).

    Science.gov (United States)

    Garcia, Reinerio Benega; Cisneros, Aroldo; Schneider, Bert; Tel-Zur, Noemi

    2009-05-01

    Gynogenesis was investigated on the allotetraploid Selenicereus megalanthus and the diploid Hylocereus polyrhizus and Hylocereus undatus vine cactus species. Unpollinated ovules from developing flower buds containing microspores at middle uninucleate developmental stage were cultured on MS basal medium containing 2,4-D/TDZ with different sucrose concentrations. Ovule size increased under dark culture conditions in all the three species and the level of response was species and sucrose concentration dependent. The best responses were achieved in the two S. megalanthus accessions, E-123 and J-80, at 0.18 and 0.26 M sucrose. Only ovule enlargement was obtained in H. undatus and both ovule enlargement and callus were obtained in H. polyrhizus. Development in both species ceased and embryoids were not formed. Plant regeneration was directly and indirectly obtained in both S. megalanthus accessions. Ploidy level was determined for a total of 29 S. megalanthus gynogenic plants using flow cytometry: 15 were found to be dihaploid (plants with the gametophytic chromosome number) and the other 14 were found to have higher ploidy levels. This is the first report of successful gynogenesis in Cactaceae. The dihaploids of S. megalanthus successfully produced by ovule culture techniques opens new perspectives in vine cacti breeding.

  10. Periodontal Management of Sturge-Weber Syndrome

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    Butchibabu Kalakonda

    2013-01-01

    Full Text Available Sturge-Weber syndrome (SWS is a sporadic disorder and is frequent among the neurocutaneous syndromes specifically with vascular predominance. This syndrome consists of constellation of clinical features like facial nevus, seizures, hemiparesis, intracranial calcifications, and mental retardation. It is characterized by focal port-wine stain, ocular abnormalities (glaucoma, and choroidal hemangioma and leptomeningeal angioma most often involving occipital and parietal lobes. The present paper reports three cases of SWS with oral manifestations and periodontal management, which included thorough scaling and root planing followed by gingivectomy with scalpel and laser in cases 1 and 3 consecutively to treat the gingival enlargement. However, the treatment in case 2 was deferred as the patient was not a candidate for periodontal surgery.

  11. Evidence of formation of glushinskite as a biomineral in a Cactaceae species.

    Science.gov (United States)

    Monje, Paula V; Baran, Enrique J

    2005-03-01

    The X-ray diffractometric and infrared spectroscopic investigation of crystalline material isolated from the Cactaceae species Opuntia ellisiana shows the presence of a very complex mineral composition, including whewellite (monohydrated calcium oxalate), opal (SiO2), calcite (CaCO3) and glushinskite (dihydrated magnesium oxalate). This is the first report of the presence of magnesium oxalate in plants.

  12. Coherent and incoherent nonparaxial self-accelerating Weber beams

    CERN Document Server

    Zhang, Yiqi; Wen, Feng; Li, Changbiao; Zhang, Zhaoyang; Zhang, Yanpeng; Belić, Milivoj R

    2016-01-01

    We investigate the coherent and incoherent nonparaxial Weber beams, theoretically and numerically. We show that the superposition of coherent self-accelerating Weber beams with transverse displacement cannot display the nonparaxial accelerating Talbot effect. The reason is that their lobes do not accelerate in unison, which is a requirement for the appearance of the effect. While for the incoherent Weber beams, they naturally cannot display the accelerating Talbot effect but can display the nonparaxial accelerating properties, although the transverse coherence length is smaller than the beam width, based on the second-order coherence theory. Our research method directly applies to the nonparaxial Mathieu beams as well, and one will obtain similar conclusions as for the Weber beams, although this is not discussed in the paper. Our investigation identifies families of nonparaxial accelerating beams that do not exhibit the accelerating Talbot effect, and in addition broadens the understanding of coherence proper...

  13. STURGE WEBER SYNDROME WITH UNUSUAL INTRACRANIAL FINDINGS: A CASE REPORT

    Directory of Open Access Journals (Sweden)

    Shailendra Kumar

    2014-04-01

    Full Text Available The Sturge-Weber Syndrome, also known as encephalotrigeminal angiomatosis, is a rare vascular neurocutaneous alteration. The main clinical features of this syndrome are facial vascular cutaneous naevus, usually unilateral, which often follows the outline distribution of trigeminal nerve. We hereby are reporting a clinical case of Sturge-Weber Syndrome in a 16 year old female patient who presented with oral, cutaneous and ocular manifestations related to the syndrome.

  14. Population genetic structure of Venezuelan chiropterophilous columnar cacti (Cactaceae).

    Science.gov (United States)

    Nassar, Jafet M; Hamrick, J L; Fleming, Theodore H

    2003-11-01

    We conducted allozyme surveys of three Venezuelan self-incompatible chiropterophilous columnar cacti: two diploid species, Stenocereus griseus and Cereus repandus, and one tetraploid, Pilosocereus lanuginosus. The three cacti are pollinated by bats, and both bats and birds disperse seeds. Population sampling comprised two spatial scales: all Venezuelan arid zones (macrogeographic) and two arid regions in northwestern Venezuela (regional). Ten to 15 populations and 17-23 loci were analyzed per species. Estimates of genetic diversity were compared with those of other allozyme surveys in the Cactaceae to examine how bat-mediated gene dispersal affects the population genetic attributes of the three cacti. Genetic diversity was high for both diploid (P(s) = 94.1-100, P(p) = 56.7-72.3, H(s) = 0.182-0.242, H(p) = 0.161-0.205) and tetraploid (P(s) = 93.1, P(p) = 76.1, H(s) = 0.274, H(p) = 0.253) species. Within-population heterozygote deficit was detected in the three cacti at macrogeographic (F(IS) = 0.145-0.182) and regional (F(IS) = 0.057-0.174) levels. Low genetic differentiation was detected at both macrogeographic (G(ST) = 0.043-0.126) and regional (G(ST) = 0.009-0.061) levels for the three species, suggesting substantial gene flow among populations. Gene exchange among populations seems to be regulated by distance among populations. Our results support the hypothesis that bat-mediated gene dispersal confers high levels of genetic exchange among populations of the three columnar cacti, a process that enhances levels of genetic diversity within their populations.

  15. Max Weber: ville et capitalisme moderne

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    Hinnerk Bruhns

    2014-05-01

    Full Text Available Max Weber’s essay on The City, published after his death, has often been interpreted as a contribution to urban sociology or as a plea for ‘communal liberty’. The present article comes back to the reception of the text, examines it on the background of the research on urban problems at the time of Weber and insists on the strong relation of The City with the detailed analysis of the oriental city in The Economic Ethics of World Religions. Analysing these different contexts and Weber’s argumentation which is focalized on the Stadtwirtschaftspolitik as Verbandshandeln (urban economic policy as activity of a corporate group enables to clarify the nature and the purpose of Weber’s unfinished essay. It extends the questioning of The Protestant Ethic and the Spirit of Capitalism, investigating into the rationalization of economic life conducts and institutions in a certain type of medieval towns whose structural conditions had favoured the emergence of the rational capitalism of enterprise and of the modern state.

  16. Max Weber e a história cultural da modernidade Max Weber and the cultural history of modernity

    Directory of Open Access Journals (Sweden)

    Gangolf Hübinger

    2012-01-01

    Full Text Available Este artigo oferece um novo olhar sobre Weber como historiador. O fato de que a MWG reconstrói, de maneira bastante detalhada, o contexto histórico científico e intelectual torna mais evidente como os diferentes tópicos sobre os quais Weber trabalhou - a economia de mercado capitalista, as religiões do mundo ou o Estado moderno - foram abordados em última instância "do ponto de vista da história cultural". Diante desse quadro, meu artigo explora quatro aspectos principais: história econômica; ou mais precisamente o sentido cultural da ação econômica como ponto-chave para o pensamento histórico de Weber como um todo (I; a insistência de Weber na primazia de problemas analíticos e da escolha de perspectivas como pressupostos intelectuais do conhecimento histórico (II; a questão fundamental da história cultural em geral: como as ideias se atualizam em conflitos e constelações históricos e como a singularidade do desenvolvimento cultural europeu deve ser descrita em sua significação histórico-universal (III; a relevância da Primeira Guerra Mundial para os problemas e perspectivas de Weber: seu foco em uma teoria histórico-política do poder e da dominação e da gênese e estrutura do Estado moderno e da democracia (IV.This article takes a new look at Weber as a historian. The MWG's detailed reconstruction of the scientific and intellectual historical context provides a clear insight into how all the different topics on which Weber worked - the capitalist market economy, world religions, or the modern state - were ultimately treated "from the view-point of cultural history." In response the article examines four aspects: Economic history; or more precisely, the cultural meaning of economic action as a key to Weber's historical thinking as a whole (I; Weber's insistence on the primacy of analytical problems and of choices of perspectives as intellectual presuppositions of historical knowledge (II; the cardinal question of

  17. Characterization of a methionine-rich protein from the seeds of Cereus jamacaru Mill. (Cactaceae

    Directory of Open Access Journals (Sweden)

    T.C.F.R. Aragão

    2000-08-01

    Full Text Available We describe here the isolation and characterization of a major albumin from the seeds of Cereus jamacaru (Cactaceae, to which we gave the trivial name of cactin. This protein has a molecular mass of 11.3 kDa and is formed by a light chain (3.67 kDa and a heavy chain (7.63 kDa. This protein was isolated using a combination of gel filtration chromatography and reverse-phase HPLC. The amino acid composition of cactin was determined and found to resemble that of the 2S seed reserve protein from the Brazil nut, a protein remarkable for its high methionine content. The usefulness of cactin as a molecular marker in the taxonomy of the Cactaceae is discussed.

  18. Phenolic content and antioxidant activity of Pereskia grandifolia Haw. (Cactaceae) extracts

    OpenAIRE

    Sim, K. S.; A M Sri Nurestri; Norhanom, A. W.

    2010-01-01

    The leaves of Pereskia grandifolia Haw. (Cactaceae), commonly known as “Jarum Tujuh Bilah” in Malaysia, have been traditionally used as natural remedy in folk medicine by the locals. In the present study, the antioxidant potential of P. grandifolia crude methanol and its fractionated extracts (hexane, ethyl acetate and water) have been investigated, employing three different established testing systems, such as scavenging activity on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, reducing pow...

  19. AVALIAÇÃO DAS PROPRIEDADES ANTIOXIDANTES E SUSCEPTIBILIDADE ANTIMICROBIANA DE Pereskia grandifolia HAWORTH (CACTACEAE)

    OpenAIRE

    Turra, Andersson Franklin; Marçal, Flaviano João Basílio; Baretta, Irinéia Paulina; Takemura, Orlando Seiko; Jr, Antonio Laverde

    2008-01-01

    A espécie Pereskia grandifolia Haworth (Cactaceae), conhecida popularmente como ora-pro-nóbis, foi avaliada quanto àssuas propriedades antioxidantes e susceptibilidade antimicrobiana. As propriedades antioxidantes foram avaliadas pelo método de inibiçãodo radical livre 2,2-difenil-1-picrilidrazil (DPPH•). Os extratos das folhas de P. grandifolia (1000 ìg/mL) apresentaram propriedadesantioxidantes entre 10 e 30% de inibição. D...

  20. Cancer preventive and curative attributes of plants of the Cactaceae family: a review.

    Science.gov (United States)

    Harlev, Eli; Nevo, Eviatar; Solowey, Elaine; Bishayee, Anupam

    2013-06-01

    The ever-increasing occurrence of cancer and the severe side effects and limited efficacy of current cancer chemotherapy based on chemical drugs shift the attention toward drugs of plant origin. The Cactaceae family comprises more than 1500 species, but until recently only a few of them have been tested for their chemopreventive and anticancer attributes, leaving a wide unexplored area still waiting for researchers to investigate. Considering this fact, and also the promising results obtained with the relatively few plants of this family already tested, it should justly be expected that some plants of the Cactaceae family yet unexplored might possess outstanding anticancer attributes, exceeding those displayed by the plants already tested. This review presents in vitro and in vivo experimental evidence on cancer chemopreventive and therapeutic potential of bioactive phytoconstituents and extracts derived from cactus plants. It also examines the underlying biochemical and molecular mechanisms involved in the antineoplastic effects of plants of the Cactaceae family. Current limitation and future directions of research towards effective use of cacti to develop efficient and side effect-free future cancer-preventive and anticancer drugs are also discussed.

  1. Isolation and Characterisation of a Reserve Protein from the Seeds of Cereus jamacaru (Cactaceae

    Directory of Open Access Journals (Sweden)

    Itayguara Ribeiro da Costa

    2001-12-01

    Full Text Available We describe here the isolation and characterisation of a major reserve protein from the seeds of Cereus jamacaru. (Cactaceae. This protein has a molecular mass of 5319 kDa and was isolated by a combination of gel filtration chromatography and reverse phase HPLC. The amino acid composition of the protein was determined and it was shown to have similarities with the amino acid composition of several proteins from the 2S albumin storage protein family. The usefulness of this protein as a molecular marker in the Cactaceae is also discussed.A proteína de reserva mais abundante das sementes de Cereus jamacaru (Cactaceae foi isolada e caracterizada. Esta proteína tem uma massa molecular de 5319 kDa e foi isolada através de uma combinação de técnicas de filtração em gel e HPLC de fase reversa. A composição de aminoácidos da proteína foi determinada e possui similaridade com a composição de aminoácidos de diversas proteínas de reserva de sementes que pertencem à família das albuminas. A utilidade desta proteína como um marcador molecular para as cactáceas é também discutida.

  2. Basal cactus phylogeny: implications of Pereskia (Cactaceae) paraphyly for the transition to the cactus life form.

    Science.gov (United States)

    Edwards, Erika J; Nyffeler, Reto; Donoghue, Michael J

    2005-07-01

    The cacti are well-known desert plants, widely recognized by their specialized growth form and essentially leafless condition. Pereskia, a group of 17 species with regular leaf development and function, is generally viewed as representing the "ancestral cactus," although its placement within Cactaceae has remained uncertain. Here we present a new hypothesis of phylogenetic relationships at the base of the Cactaceae, inferred from DNA sequence data from five gene regions representing all three plant genomes. Our data support a basal split in Cactaceae between a clade of eight Pereskia species, centered around the Caribbean basin, and all other cacti. Two other Pereskia clades, distributed mostly in the southern half of South America, are part of a major clade comprising Maihuenia plus Cactoideae, and Opuntioideae. This result highlights several events in the early evolution of the cacti. First, during the transition to stem-based photosynthesis, the evolution of stem stomata and delayed bark formation preceded the evolution of the stem cortex into a specialized photosynthetic tissue system. Second, the basal split in cacti separates a northern from an initially southern cactus clade, and the major cactus lineages probably originated in southern or west-central South America.

  3. Functional morphology of two Lepismium species (Rhipsalideae, Cactaceae Morfología funcional de dos especies de Lepismium (Rhipsalideae, Cactaceae

    Directory of Open Access Journals (Sweden)

    María Regina Torres-Boeger

    2010-08-01

    Full Text Available The morphology and anatomy of stem segments of 2 species of Lepismium (Cactaceae, which grow naturally in the Araucaria forest understory, in the state of Paraná, Brazil, are compared. The goal of this study was to identify morphological traits adapted to epiphytism and to the low light condition of the studied environment. Twenty-five segments of Lepismium cruciforme and L. lumbricoides were collected and various morphological and anatomical features were measured. Differences (p Se compara la morfología y la anatomía de los segmentos del tallo de 2 especies de Lepismium, que crecen naturalmente en el sotobosque del bosque de Araucaria, en el estado de Paraná. El objetivo de este estudio fue identificar rasgos morfológicos de adaptación para el epifitismo y para condiciones de poca luz del ambiente estudiado. Se recolectaron 25 ejemplares de L. cruciforme y de L. lumbricoides y se midieron rasgos tanto morfológicos como anatómicos de los tallos. Se encontraron diferencias (p < 0.05 entre las especies considerando los valores promedio del volumen total, del área total fotosintética, del grosor de la epidermis y de la hipodermis, del área del esclerénquima / área transversal total de los segmentos del tallo y del área del parénquima / área transversal total, caracteres que se correlacionan a sus diferencias en forma. Las características xeromórficas encontradas en Lepismium, la mayor parte de ellas típicas de cactáceas de zonas áridas, han favorecido el desarrollo del hábito epifítico y la ocupación de bosques húmedos. Como epífitas, están sujetas a un cierto grado de escasez de agua, aunque no a las condiciones tan severas como la mayoría de las cactáceas terrestres. Los valores promedio para el grosor de la hipodermis, el contenido de agua, la cantidad de esclerénquima y las densidad estomática son más similares a las plantas mesomórficas, y se pueden correlacionar al epifitismo, demostrando que estas especies

  4. Bureaucracy and Education: an analysis since Max Weber

    Directory of Open Access Journals (Sweden)

    João Alfredo Costa de Campos Melo Júnior

    2010-06-01

    Full Text Available This paper aims at providing a discussion on bureaucracy and education based on the comprehensive sociology developed by Weber. The choice of Max Weber seems to be the most appropriate due the diversity and depth of his intellectual production, what includes the issue of bureaucracy. The use of Weber should serve as a precise instrument of conceptual analysis on the theme addressed here. Certainly, this thinker has been one of the main scholars on bureaucracy, with focus on Germany at the time of the First World War (1914-1918. It is within such a productive theoretical framework that we intend to provide a few reflections about education and bureaucracy from a Weberian epistemological base.

  5. Sturge Weber Syndrome: An Unusual Case with Multisystem Manifestations.

    Science.gov (United States)

    Nidhi, C; Anuj, C

    2016-03-01

    Sturge-Weber syndrome (SWS) is a rare congenital neurocutaneous disorder. It is characterized by the presence of facial port wine stains, neurological abnormalities like seizures and mental retardation, ocular disorders, oral involvement and leptomeningeal angiomas. A 13-year-old boy presented with the chief complaint of swollen, bleeding gums and deposits on the teeth. Detailed medical and dental history, clinical examination and investigations confirmed the diagnosis of Sturge-Weber syndrome. The treatment comprised of a thorough plaque control regimen to reduce the gingival enlargement, and it included oral hygiene instructions, thorough scaling, root planing at regular intervals and plaque index scoring which motivated the patient at each visit. This case illustrates that early intervention in a patient with Sturge-Weber syndrome is quintessential because of its associated gingival vascular features and their complicating manifestations. Furthermore, the need for periodic oral examinations and maintenance of good oral hygiene to prevent any complications from the oral vascular lesions has been highlighted.

  6. Weber and Kafka: The rational and the enigmatic bureaucracy

    DEFF Research Database (Denmark)

    Beck Jørgensen, Torben

    2012-01-01

    Max Weber’s and Franz Kafka’s respective understandings of bureaucracy are as different as night and day. Yet, Kafka’s novel The Castle is best read with Max Weber at hand. In fact, Kafka relates systematically to all the dimensions in Weber’s ideal type of bureaucracy and give us a much......’s painting: Ascending and Descending. Nevertheless, Weber and Kafka can both be right. While Kafka looks at the bureaucratic phenomenon through persons who are marginalized, Weber’s perspective is historic-comparative and top-down. Are the observations of the one more correct than the other? The question...... is meaningless. As two opposite poles, Weber and Kafka ‘magnetize’ each other....

  7. Weber's planetary model of the atom

    Energy Technology Data Exchange (ETDEWEB)

    Koch Torres Assis, Andre; Wiederkehr, Karl Heinrich; Wolfschmidt, Gudrun

    2011-07-01

    Known is Wilhelm Weber together with Gaussfor the creation of the absolute measurement systems, foundation for the contemporary Si units. Here Weber's atomic model, originated around 1860, is presented.With the triumph of the field physics and the short-range interaction theory (Faraday, Maxwell, Heinrich Hertz) all to fastly the older electrodynamics was put as superseeded long-range interaction theory ad acta. Just at the end of the 19th century the idea of a substantial, atomistic structure of electricity (H. A. Lorentz, J. J. Thomson) had is way. On the base of Ampere's hypothesis of the molecular currents in Weber's atomic model electrical particles with electric charge and very small mass circulate around a ponderable atom or molecule, which carries also electrical charge. These circulating particles excite according to Weber in the ether light waves of constant frequency. The similarity with Bohr's atomic model - apart from the quantum conditions and quantum jumps - is amazing. Energetic consideration in the emission of the light waves Weber indeed not yet made. In the foundation of metal electronics Weber also started from Ampere's molecular currents. If voltage is put on the conductor ballistic motions of electrical particles result, which arrive so from the effective sphere of a ponderable atom in the effective sphere of a neighbouring atom. Based on these ideas then Riecke, Drude, and H. A. Lorentz created then the classical electron theory of the metals. Sommerfeld took up again the idea under usage of the quantum theory come into use, and solid-state physics began.

  8. Max Weber in the American Journal of Sociology: A case of circulating knowledge.

    Science.gov (United States)

    Rijks, Marlise

    2012-01-01

    By the middle of the 1970s, a Max Weber revival commenced in American sociology. Almost 75 percent of the articles on Weber in the American Journal of Sociology published in the past six decades appeared in the 1970s and 1980s. The Weber revival in American sociology is a phenomenon observed in leading literature. New translations and publications are frequently indicated reasons for the renewed interest in Weber. Without dismissing this factor, it is not an entirely satisfactory explanation. This article accounts for the Weber revival in a new way. Taking the American Journal of Sociology as a case study, I argue that the Weber revival was a case of circulating knowledge. Certain historically set issues led to a reorientation of Weber, which meant that knowledge about Weber was moved, extended, and transformed. © 2012 Wiley Periodicals, Inc.

  9. STURGE-WEBER SYNDROME: A TYPE OF PHAKOMATOSIS

    Directory of Open Access Journals (Sweden)

    Shruti S.

    2014-10-01

    Full Text Available Sturge-Weber syndrome (SWS (MIM ID 185300 (ORPHA 3205 (ICD 10 code - Q85.8 or encephalotrigeminalangiomatosis belongs to group of disorders collectively called asphakomatoses (“mother-spot” disease. This rare congenital neurocutaneous syndrome is characterized by unilateral facial cutaneous vascular malformations affecting the eye and skin in association with ipsilateralleptomeningealangiomatosis. [1,2] In 1860, Schirmer first identified this syndrome, and Sturge in 1879 described it in detail; later Frederick Parkes Weber in 1992 demonstrated intracranial calcification. [1,2] The prevalence of the diseases 1 : 50,000 live birth sand equally affects males and females with no racial predilection.

  10. Double trouble: Bilateral cerebral involvement in Sturge-Weber syndrome

    Directory of Open Access Journals (Sweden)

    Narosha Adroos

    2015-03-01

    Full Text Available Sturge-Weber syndrome, also known as encephalotrigeminal angiomatosis or meningofacial angiomatosis, is characterised in its classical form by a congenital, usually unilateral, ‘portwine stain’ (capillary naevus on the face, convulsions, typical intracranial calcification and some degree of mental retardation and hemiparesis. The clinical correlation of intractable seizures with the presence of bilateral intracranial disease has management and prognostic implications, thus making the presence of bilateral disease an important factor to all those involved in the management of the child with Sturge-Weber syndrome.

  11. Un’interpretazione della teoria della religione secondo Max Weber

    OpenAIRE

    Bourdieu, Pierre

    2013-01-01

    Per un paradosso del tutto conforme alla teoria weberiana della relazione fra le intenzioni degli agenti e il senso storico delle loro azioni, il contributo più importante apportato da Max Weber alla sociologia della religione si colloca forse su tutt’altro piano rispetto a quello scelto per lo scontro di tutta una vita con Marx. Se, nel suo sforzo ostinato per definire l’efficacia storica delle credenze religiose contro le espressioni più riduttive della teoria marxista, Max Weber è talvolta...

  12. Peritonsillar Abscess: Complication of Acute Tonsillitis or Weber's Glands Infection?

    Science.gov (United States)

    Klug, Tejs Ehlers; Rusan, Maria; Fuursted, Kurt; Ovesen, Therese

    2016-08-01

    To review the literature concerning the 2 primary hypotheses put forth to explain the pathogenesis of peritonsillar abscess: "the acute tonsillitis hypothesis" (peritonsillar abscess is a complication of acute tonsillitis) and "the Weber gland hypothesis" (peritonsillar abscess is an infection of Weber's glands). PubMed, EMBASE. Data supporting or negating one hypothesis or the other were elicited from the literature. Several findings support the acute tonsillitis hypothesis. First, the 2 main pathogens in peritonsillar abscess have been recovered from pus aspirates and bilateral tonsillar tissues with high concordance rates, suggesting that both tonsils are infected in patients with peritonsillar abscess. Second, studies report signs of acute tonsillitis in the days prior to and at the time of peritonsillar abscess. Third, antibiotic treatment reduces the risk of abscess development in patients with acute tonsillitis. However, some findings suggest involvement of the Weber's glands in peritonsillar abscess pathogenesis. First, high amylase levels have been found in peritonsillar pus. Second, the majority of peritonsillar abscesses are located at the superior tonsillar pole in proximity of the Weber's glands. We propose a unified hypothesis whereby bacteria initially infect the tonsillar mucosa and spread via the salivary duct system to the peritonsillar space, where an abscess is formed. Our findings support the rationale for antibiotic treatment of patients with severe acute tonsillitis to reduce the risk of abscess development. Improved understanding of peritonsillar abscess pathogenesis is important for the development of efficient prevention strategies. © American Academy of Otolaryngology—Head and Neck Surgery Foundation 2016.

  13. PHYTO-CHEMICAL CONSTITUENTS FROM STEM OF TARAXACUM OFFICINALE WEBER

    National Research Council Canada - National Science Library

    Shirin Khan; Kiran Duby; Rashmi Jain; Umesh Kumar Vishwakarma

    2016-01-01

      A new flavone glycoside 1 m. p. 223-225 degrees Celsius, m. f. C^sub 34^H^sub 42^O^sub 2^0, (M+) 770 (FABMS) has been isolated from the stems of Taraxacum Officinal weber along with one known compound Taxifolin...

  14. Bounds in the generalized Weber problem under locational uncertainty

    DEFF Research Database (Denmark)

    Juel, Henrik

    1981-01-01

    An existing analysis of the bounds on the Weber problem solution under uncertainty is incorrect. For the generalized problem with arbitrary measures of distance, we give easily computable ranges on the bounds and state the conditions under which the exact values of the bounds can be found...

  15. Outcome of Hemispherectomy in Sturge-Weber Syndrome

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2002-12-01

    Full Text Available A questionnaire was mailed to the parents of 70 patients identified by the Sturge-Weber Foundation as recipients of hemispherectomy between 1979 and 2001, and responses obtained from 32 (46% were analysed at the Johns Hopkins Hospital, Baltimore, MD.

  16. BOOK REVIEW: The Success of Open Source by Steven Weber

    Directory of Open Access Journals (Sweden)

    Eric Lease Morgan

    2007-12-01

    Full Text Available The Success of Open Source by Steven Weber details the history, process, motivations, and possible long-term effects of open source software (OSS. Weber’s book can be used as a set of guidelines – a description of a framework – for building software solutions for the computing problems facing libraries.

  17. As raízes jurídicas de Max Weber The juridical roots of Max Weber

    Directory of Open Access Journals (Sweden)

    Gerhard Dilcher

    2012-01-01

    Full Text Available O artigo investiga a formação, a carreira e os trabalhos de Max Weber como jurista, assim como delineia as linhas gerais do impacto e das influências de sua formação jurídica na sua obra em geral. Especial atenção merece sua tese de doutorado sobre as sociedades comerciais na Idade Média, que é apresentada em sua problematização geral e em suas principais ideias. Com isso, procura-se indicar como os problemas tratados por Weber em sua tese de doutorado - sua principal obra jurídica - antecipam temas e problemas que serão desenvolvidos na obra posterior de modo ampliado e aprofundado.The article investigates the formation, career and works of Max Weber as a jurist, and outlines the impact and influences of his legal training on his work in general. Special attention is given to his doctoral thesis on trading societies of the Middle Ages, presenting his overall problematization and his main ideas. The objective is to show how the problems explored by Weber in his doctoral thesis - his main juridical work - anticipate themes and problems developed more widely and deeply in his later work.

  18. The theoretical root of Karl Jaspers' General Psychopathology. Part 2: The influence of Max Weber.

    Science.gov (United States)

    Kumazaki, Tsutomu

    2013-09-01

    The present study explores and compares Jaspers' methodology of psychopathology with Weber's methodology of sociology. In his works, Weber incorporated the arguments of many other researchers into his own methodology. Jaspers respected Weber as a mentor and presented arguments that were very similar to Weber's. Both Weber and Jaspers began from empathic understanding, but at the same time aimed for a rational and ideal-typical conceptualization. In addition, their methodologies were similar with respect to their detailed terminology. Such similarities cannot be seen with any other scholars. This suggests that Weber may have played an integral role as a mediator between his contemporary scholars and Jaspers. Thus, Weber may have had the most significant influence on Jaspers.

  19. The biological activities and chemical composition of Pereskia species (Cactaceae)--a review.

    Science.gov (United States)

    Pinto, Nícolas de Castro Campos; Scio, Elita

    2014-09-01

    The exploration of nature as a source of sustainable, novel bioactive substances continues to grow as natural products play a significant role in the search for new therapeutic and agricultural agents. In this context, plants of the genus Pereskia (Cactaceae) have been studied for their biological activities, and are evolving as an interesting subject in the search for new, bioactive compounds. These species are commonly used as human foodstuffs and in traditional medicine to treat a variety of diseases. This review focuses on the bioactivity and chemical composition of the genus Pereskia, and aims to stimulate further studies on the chemistry and biological potential of the genus.

  20. Isolation and characterization of a reserve protein from the seeds of Opuntia ficus-indica (Cactaceae

    Directory of Open Access Journals (Sweden)

    Uchoa A.F.

    1998-01-01

    Full Text Available We describe here the isolation and characterization of a major albumin from the seeds of Opuntia ficus-indica (Cactaceae. This protein has a molecular mass of 6.5 kDa and was isolated by a combination of gel filtration chromatography and reverse-phase HPLC. The amino acid composition of this protein was determined and it was shown to have similarities with the amino acid composition of several proteins from the 2S albumin storage protein family. The N-terminal amino acid sequence of this protein is Asp-Pro-Tyr-Trp-Glu-Gln-Arg.

  1. Regeneration of roots from callus reveals stability of the developmental program for determinate root growth in Sonoran Desert Cactaceae.

    Science.gov (United States)

    Shishkova, Svetlana; García-Mendoza, Edith; Castillo-Díaz, Vicente; Moreno, Norma E; Arellano, Jesús; Dubrovsky, Joseph G

    2007-05-01

    In some Sonoran Desert Cactaceae the primary root has a determinate root growth: the cells of the root apical meristem undergo only a few cell division cycles and then differentiate. The determinate growth of primary roots in Cactaceae was found in plants cultivated under various growth conditions, and could not be reverted by any treatment tested. The mechanisms involved in root meristem maintenance and determinate root growth in plants remain poorly understood. In this study, we have shown that roots regenerated from the callus of two Cactaceae species, Stenocereus gummosus and Ferocactus peninsulae, have a determinate growth pattern, similar to that of the primary root. To demonstrate this, a protocol for root regeneration from callus was established. The determinate growth pattern of roots regenerated from callus suggests that the program of root development is very stable in these species. These findings will permit future analysis of the role of certain Cactaceae genes in the determinate pattern of root growth via the regeneration of transgenic roots from transformed calli.

  2. [Psychiatry as cultural science: considerations following Max Weber].

    Science.gov (United States)

    Bormuth, M

    2010-11-01

    Psychiatry can be seen as a natural and cultural science. According to this the postulate of freedom is its strong value judgment. Since the times of enlightenment it has been described metaphorically by the myth of the expulsion from Paradise. Following Max Weber and Wilhelm Dilthey, Karl Jaspers has introduced this perspective into psychiatry. His strict dichotomy between explaining and understanding has later been critically revised by Werner Janzarik and Hans Heimann. Their concepts of structure dynamic, of pathography and of anthropology are closer to Max Weber who connected natural and cultural sciences in a much stronger way. Especially the pathographic example of Nietzsche allows to demonstrate the differences between Jaspers and the later psychopathologists of the Heidelberg and Tübingen schools.

  3. Inferences about time course of Weber's Law violate statistical principles.

    Science.gov (United States)

    Foster, Rachel M; Franz, Volker H

    2013-01-15

    Recently, Holmes et al. (2011b) suggested that grasping is only subject to Weber's Law at early but not late points of a grasping movement. They therefore conclude that distinct visual computations and information may guide early and late portions of grasping. Here, we argue that their results can be explained by an interesting statistical artifact, and cannot be considered indicative of the presence or absence of Weber's Law during early portions of grasping. Our argument has implications for other studies using similar methodology (e.g., Heath et al., 2011, Holmes et al., 2011a, 2012), and also for the analysis of temporal data (often called time series) in general. Copyright © 2012 Elsevier Ltd. All rights reserved.

  4. STURGE-WEBER SYNDROME: A TYPE OF PHAKOMATOSIS

    OpenAIRE

    Shruti S.; Ravi Raja

    2014-01-01

    Sturge-Weber syndrome (SWS) (MIM ID 185300) (ORPHA 3205) (ICD 10 code - Q85.8) or encephalotrigeminalangiomatosis belongs to group of disorders collectively called asphakomatoses (“mother-spot” disease). This rare congenital neurocutaneous syndrome is characterized by unilateral facial cutaneous vascular malformations affecting the eye and skin in association with ipsilateralleptomeningealangiomatosis. [1,2] In 1860, Schirmer first identified this syndrome, and Stur...

  5. La contemporaneidad del pensamiento de Durkheim, Weber y Marx

    Directory of Open Access Journals (Sweden)

    Yasmín Hernández Romero

    2009-01-01

    Full Text Available En este documento se reflexiona acerca de la importancia de tres grandes clásicos del pensamiento sociológico, Durkheim, Weber y Marx. Se analiza el alcance de los postulados teóricos y metodológicos que inauguraron dichos autores en los albores de la sociología y cómo continúan siendo punto de reflexión en la sociología contemporánea.

  6. Diffusivity anomaly in modified Stillinger-Weber liquids

    Science.gov (United States)

    Sengupta, Shiladitya; Vasisht, Vishwas V.; Sastry, Srikanth

    2014-01-01

    By modifying the tetrahedrality (the strength of the three body interactions) in the well-known Stillinger-Weber model for silicon, we study the diffusivity of a series of model liquids as a function of tetrahedrality and temperature at fixed pressure. Previous work has shown that at constant temperature, the diffusivity exhibits a maximum as a function of tetrahedrality, which we refer to as the diffusivity anomaly, in analogy with the well-known anomaly in water upon variation of pressure at constant temperature. We explore to what extent the structural and thermodynamic changes accompanying changes in the interaction potential can help rationalize the diffusivity anomaly, by employing the Rosenfeld relation between diffusivity and the excess entropy (over the ideal gas reference value), and the pair correlation entropy, which provides an approximation to the excess entropy in terms of the pair correlation function. We find that in the modified Stillinger-Weber liquids, the Rosenfeld relation works well above the melting temperatures but exhibits deviations below, with the deviations becoming smaller for smaller tetrahedrality. Further we find that both the excess entropy and the pair correlation entropy at constant temperature go through maxima as a function of the tetrahedrality, thus demonstrating the close relationship between structural, thermodynamic, and dynamical anomalies in the modified Stillinger-Weber liquids.

  7. Diffusivity anomaly in modified Stillinger-Weber liquids

    Energy Technology Data Exchange (ETDEWEB)

    Sengupta, Shiladitya [TIFR Centre for Interdisciplinary Sciences, 21 Brundavan Colony, Narsingi, Hyderabad 500089 (India); Vasisht, Vishwas V. [Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Campus, Bangalore 560064 (India); Sastry, Srikanth [TIFR Centre for Interdisciplinary Sciences, 21 Brundavan Colony, Narsingi, Hyderabad 500089 (India); Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Campus, Bangalore 560064 (India)

    2014-01-28

    By modifying the tetrahedrality (the strength of the three body interactions) in the well-known Stillinger-Weber model for silicon, we study the diffusivity of a series of model liquids as a function of tetrahedrality and temperature at fixed pressure. Previous work has shown that at constant temperature, the diffusivity exhibits a maximum as a function of tetrahedrality, which we refer to as the diffusivity anomaly, in analogy with the well-known anomaly in water upon variation of pressure at constant temperature. We explore to what extent the structural and thermodynamic changes accompanying changes in the interaction potential can help rationalize the diffusivity anomaly, by employing the Rosenfeld relation between diffusivity and the excess entropy (over the ideal gas reference value), and the pair correlation entropy, which provides an approximation to the excess entropy in terms of the pair correlation function. We find that in the modified Stillinger-Weber liquids, the Rosenfeld relation works well above the melting temperatures but exhibits deviations below, with the deviations becoming smaller for smaller tetrahedrality. Further we find that both the excess entropy and the pair correlation entropy at constant temperature go through maxima as a function of the tetrahedrality, thus demonstrating the close relationship between structural, thermodynamic, and dynamical anomalies in the modified Stillinger-Weber liquids.

  8. Cannabidiol Treatment for Refractory Seizures in Sturge-Weber Syndrome.

    Science.gov (United States)

    Kaplan, Emma H; Offermann, Elizabeth A; Sievers, Jacqueline W; Comi, Anne M

    2017-06-01

    Sturge-Weber syndrome results in leptomeningeal vascular malformations, medically refractory epilepsy, stroke(s), and cognitive impairments. Cannabidiol, a cannabinoid without psychoactive properties, has been demonstrated in preclinical models to possibly have anticonvulsant, antioxidant, and neuroprotective actions. Five subjects with Sturge-Weber syndrome brain involvement and treatment-resistant epilepsy were enrolled. Motor seizure frequency, quality of life, and adverse events were recorded from the eighth week of the pretreatment period, eight weeks after starting maintenance dose (week 14), and the most recent visit. Four subjects had data through week 14, one of whom initially withdrew for lack of efficacy but because of other benefits re-enrolled with a lower dose. Two subjects at week 14 and three subjects with bilateral brain involvement had at the last visit a greater than 50% seizure reduction, reported an improved quality of life, and remained on cannabidiol 63-80 weeks after starting the drug. Three subjects reported mild side effects considered related to cannabidiol. This study suggests that cannabidiol may be well tolerated as adjunctive medication for seizure management and provides initial data supporting further study of cannabidiol in individuals with Sturge-Weber syndrome. Copyright © 2017. Published by Elsevier Inc.

  9. Una Lectura de Humboldt. Max Weber y la universidad alemana

    Directory of Open Access Journals (Sweden)

    Piedras Monroy, Pedro Andrés

    2008-06-01

    Full Text Available Max Weber’s specialists and biographers have not considered it very interesting to reflect about this author’s critique of the German university. In my opinion, many of the holes and difficulties in meaning we still find in his works and life come from this broad and decisive lack of knowledge. In my essay, I try to start filling this gap, studying the way Weber answers to and updates the educational challenges of the founder of the modern German University: Wilhelm von Humboldt.Especialistas y biógrafos de Max Weber no han considerado demasiado interesante reflexionar sobre la crítica que este autor hace de la universidad alemana. En mi opinión, muchos de los huecos y de las dificultades que seguimos encontrando a la hora de comprender a este autor proceden de este vacío enorme y decisivo. En mi ensayo, trato de comenzar a llenar este hueco a través del estudio del modo en el que Weber responde a los desafíos educativos del fundador de la moderna universidad alemana, Wilhelm von Humboldt, y los actualiza.

  10. Pollen Flavonoid/Phenolic Acid Composition of Four Species of Cactaceae and its Taxonomic Significance

    Directory of Open Access Journals (Sweden)

    Norma Almaraz-Abarca

    2008-01-01

    Full Text Available The pollen flavonoid/phenolic acid composition of 14 individual of Stenocactus multicostatus subsp. zacatecasensis (Britton et Rose U. Guzman et Vazquez-Benitez, comb. et stat. nov., 11 of Echinocereus enneacanthus Engelmann, 8 of Echinocereus pectinatus (Scheidweiler Engelmann and 12 of Mammillaria heyderi sensu lato (all belonging to Cactaceae was analyzed by HPLC/DAD with the aim of determining the role of pollen profiles of flavonoid/phenolic acid as valuable markers in those taxa. The flavonoid/phenolic acid composition of pollen was evaluated within and among the taxa analyzed. The results suggest that (a the flavonoid/phenolic acid profiles of these species are among the most complex reported, (b that quercetin, kaempferol and herbacetin glycoside derivatives are the major phenols found in the pollen of these species of cactus, (c that some intrapopulation variability is present in all four species and (d that these pollen flavonoid/phenolic acid profiles tend to be species-specific, so that they can represent important taxonomic markers in Cactaceae.

  11. Wide-band tracheids are present in almost all species of Cactaceae.

    Science.gov (United States)

    Mauseth, James D

    2004-02-01

    Wide-band tracheids (WBTs) have been found in seedlings of most species of cacti that have fibrous wood in their adult bodies. Consequently, this cell type is now known to be present in almost all cacti. Earlier studies of adult plants revealed WBTs to be present only in cacti with globose or short, broad bodies, whereas all species with large columnar or long slender bodies had fibrous wood without WBTs. However, even these species produce WBTs during the first several months after germination. In species with fibrous wood in their adult bodies (species with large or slender bodies), seedlings undergo a phase transition in wood morphogenesis after a few months and stop producing the juvenile (WBT) wood and begin producing adult (fibrous) wood. If adult plants have an intermediate size, the phase transition is delayed and the plant produces WBT wood for several years. Species with globose bodies repress the phase transition completely and never switch to producing adult (fibrous) wood. Because WBTs are so widespread, they probably originated only once in Cactaceae, not multiple times as suggested earlier, or there may have been just a single origin in the Cactaceae/Portulacaceae clade.

  12. Karyotypes, heterochromatin, and physical mapping of 18S-26S rDNA in Cactaceae.

    Science.gov (United States)

    Las Peñas, M L; Urdampilleta, J D; Bernardello, G; Forni-Martins, E R

    2009-01-01

    Karyotype analyses in members of the four Cactaceae subfamilies were performed. Numbers and karyotype formula obtained were: Pereskioideae = Pereskiaaculeata(2n = 22; 10 m + 1 sm), Maihuenioideae = Maihuenia patagonica (2n = 22, 9 m + 2 sm; 2n = 44, 18 m + 4 sm), Opuntioideae = Cumulopuntia recurvata(2n = 44; 20 m + 2 sm), Cactoideae = Acanthocalycium spiniflorum (2n = 22; 10 m + 1 sm),Echinopsis tubiflora (2n = 22; 10 m + 1 sm), Trichocereus candicans (2n = 22, 22 m). Chromosomes were small, the average chromosome length was 2.3 mum. Diploid species and the tetraploid C. recurvata had one terminal satellite, whereas the remaining tetraploid species showed four satellited chromosomes. Karyotypes were symmetrical. No CMA(-)/DAPI(+) bands were detected, but CMA(+)/DAPI(-) bands associated with NOR were always found. Pericentromeric heterochromatin was found in C. recurvata, A. spiniflorum, and the tetraploid cytotype of M. patagonica. The locations of the 18S-26S rDNA sites in all species coincided with CMA(+)/DAPI(-) bands; the same occurred with the sizes and numbers of signals for each species. This technique was applied for the first time in metaphase chromosomes in cacti. NOR-bearing pair no.1 may be homeologous in all species examined. In Cactaceae, the 18S-26S loci seem to be highly conserved.

  13. Anatomical variation in Cactaceae and relatives: Trait lability and evolutionary innovation.

    Science.gov (United States)

    Ogburn, R Matthew; Edwards, Erika J

    2009-02-01

    The cacti have undergone extensive specialization in their evolutionary history, providing an excellent system in which to address large-scale questions of morphological and physiological adaptation. Recent molecular phylogenetic studies suggest that (1) Pereskia, the leafy genus long interpreted as the sister group of all other cacti, is likely paraphyletic, and (2) Cactaceae are nested within a paraphyletic Portulacaceae as a member of the "ACPT" clade (Anacampseroteae, Cactaceae, Portulaca, and Talinum). We collected new data on the vegetative anatomy of the ACPT clade and relatives to evaluate whether patterns in the distributions of traits may provide insight into early events in the evolutionary transition to the cactus life form. Many traits had high levels of homoplasy and were mostly equivocal with regard to infraclade relationships of ACPT, although several characters do lend further support to a paraphyletic Pereskia. These include a thick stem cuticle, prominent stem mucilage cells, and hypodermal calcium oxalate druses, all of which are likely to be important traits for stem water storage and photosynthesis. We hypothesize that high lability of many putative "precursor" traits may have been critical in generating the organismal context necessary for the evolution of an efficient and integrated photosynthetic stem.

  14. Max Weber: entre relativismo e individualismo metodológico. Entrevista con Michel Maffesoli

    OpenAIRE

    Rafael Arriaga Martínez

    2012-01-01

    ¿Max Weber, relativista? Sí, sostiene Michel Maffesoli (1985). Para Raymond Boudon, líder intelectual de la corriente de pensamiento sociológico inspirada en la teoría de la racionalidad de Weber, la lectura relativista de la obra de éste sería inaceptable. A pesar de las diferencias de posición teórica y desacuerdos entre ambos autores en torno a la obra de Weber podríamos bien retener como hipótesis de trabajo la idea de la irreductibilidad de Weber a una sola posición epistemológica, como ...

  15. Agricultural Chemicals in Leary Weber Ditch Basin, Hancock County, Indiana, 2003-04

    Science.gov (United States)

    Baker, Nancy T.; Lathrop, Timothy R.

    2006-01-01

    Leary Weber Ditch Basin, Hancock County, Indiana, is part of an Agricultural Chemicals: Source, Transport, and Fate study conducted by the National Water-Quality Assessment Program of the U.S. Geological Survey. Water-quality samples were collected in Leary Weber Ditch and in the major hydrologic compartments of the Leary Weber Ditch Basin during 2003 and 2004. Hydrologic compartments that contribute water and agricultural chemicals to Leary Weber Ditch are rain water, overland-flow water, soil water, tile-drain water, and ground water. Samples were analyzed for selected pesticides, nutrients, and major ions.

  16. Elementos traqueais de cinco táxons de Cactaceae da caatinga pernambucana, Brasil Traqueary elements of five taxons of Cactaceae of the caatinga from Pernambuco State, Brazil

    Directory of Open Access Journals (Sweden)

    Emília Cristina Pereira de Arruda

    2004-12-01

    Full Text Available Este trabalho traz a caracterização morfológica de elementos de vaso e WBT ("traqueíde com espessamento largo" de raiz e cladódio de cinco táxons de Cactaceae (Harrisia adscendens (Gurke Britton & Rose, Melocactus × horridus Wedermann Notizbl., M. zehntneri (Britton & Rose Luetzelb., Tacinga inamoena (Schumann N.P. Taylor & Stuppy e T. palmadora (Britton & Rose N.P. Taylor & Stuppy ocorrentes em um trecho de caatinga do Estado de Pernambuco, Brasil. Os elementos de vaso observados tanto nas raízes quanto nos cladódios apresentam-se praticamente idênticos entre os táxons estudados, sendo observadas pontoações alternas, opostas e escalariformes, além de placas de perfuração simples transversal e obliqua. As traqueídes (WBT foram registradas apenas nos cladódios de quatro dos táxons estudados, exceto em Harrisia adscendens. As WBTs apresentam espessamento anelar ou helicoidal e o espessamento misto ocorre apenas em Melocactus. Os elementos traqueais foram medidos, mostrando que em Melocactus tanto a raiz como o cladódio, apresentam elementos de vaso longos e quanto as WBT essas são maiores no cladódio de Melocactus.This work brings a morphological characterization of traqueary elements (vessels and tracheids in root and cladode of five taxons of Cactaceae (Harrisia adscendens (Gurke Britton & Rose, Melocactus × horridus Wedermann Notizbl., M. zehntneri (Britton & Rose Luetzelb., Tacinga inamoena (Schumann N.P. Taylor & Stuppy and T. palmadora (Britton & Rose N.P. Taylor & Stuppy occurent in the caatinga of Pernambuco State, Brazil. The vessels elements observed in the roots and cladodes seem almost same among the studied taxons, were observed alternate, opposite and scalariform pitting, and simple perforation plate transversal or oblique. The tracheids (WBT were exclusively noted in the cladodes of four studied taxons, except Harrisia adscendens. The WBTs with annular and helical thickening are present in all taxons and the

  17. O historiador Max Weber: indologia e historicismo na obra weberiana

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    Arilson Silva de Oliveira

    2010-06-01

    Full Text Available Max Weber apropriou-se das exigências metodológicas do historicismo alemão contra toda filosofia iluminista natural e toda filosofia idealista da história. Ele as depurou no intuito de evitar as conclusões do romantismo e os desvios psicologistas do neo-historicismo. Aqui, observamos como ele muniu-se de um método particular, resgatou a racionalidade e a utilizou como parâmetro para compreender historicamente a sociedade indiana frente ao historicismo desencantado de sua época.

  18. Gabor Weber Local Descriptor for Bovine Iris Recognition

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    Shengnan Sun

    2013-01-01

    Full Text Available Iris recognition is a robust biometric technology. This paper proposes a novel local descriptor for bovine iris recognition, named Gabor Weber local descriptor (GWLD. We first compute the Gabor magnitude maps for the input bovine iris image, and then calculate the differential excitation and orientation for each pixel over each Gabor magnitude map. After that, we use these differential excitations and orientations to construct the GWLD histogram representation. Finally, histogram intersection is adopted to measure the similarity between different GWLD histograms. The experimental results on the SEU bovine iris database verify the representation power of our proposed local descriptor.

  19. Liquid-liquid phase transition in Stillinger-Weber silicon

    Energy Technology Data Exchange (ETDEWEB)

    Beaucage, Philippe; Mousseau, Normand [Departement de Physique and Regroupement Quebecois sur les Materiaux de Pointe, Universite de Montreal, CP 6128, Succursale Centre-ville, Montreal, QC, H3C 3J7 (Canada)

    2005-04-20

    It was recently demonstrated that Stillinger-Weber silicon undergoes a liquid-liquid first-order phase transition deep into the supercooled region (Sastry and Angell 2003 Nat. Mater. 2 739). Here we study the effects of perturbations on this phase transition. We show that the order of the liquid-liquid transition changes with negative pressure. We also find that the liquid-liquid transition disappears when the three-body term of the potential is strengthened by as little as 5%. This implies that the details of the potential could affect strongly the nature and even the existence of the liquid-liquid phase.

  20. Sturge-Weber syndrome with no leptomeningeal enhancement on MRI

    Energy Technology Data Exchange (ETDEWEB)

    Fischbein, N.J.; Barkovich, A.J. [Department of Radiology, San Francisco, CA (United States); Wu, Y.; Berg, B.O. [Department Pediatric Neurology, University of California, San Francisco, California (United States)

    1998-03-01

    Sturge-Weber syndrome (SWS) is a neurocutaneous syndrome characterized by a facial nevus flammeus associated with seizures, developmental delay, and, often, with hemiparesis and hemianopia. On MRI, the most characteristic finding has been reported to be leptomeningeal enhancement, believed to represent leakage of contrast medium through the anomalous pial vessels that characterize the disease. We present a case of SWS with no evidence of leptomeningeal enhancement. This case illustrates that leptomeningeal enhancement need not be present in SWS, and the absence of this characteristic finding does not preclude the diagnosis. (orig.) With 2 figs.

  1. [Rendu-Osler-Weber syndrome--a complex systemic disease].

    Science.gov (United States)

    Geisthoff, U W; Koester, M; Fischinger, J; Schneider, G

    2004-09-30

    Hereditary hemorrhagic teleangiectasia (HHT or Rendu-Osler-Weber Syndrome) is an inherited autosomal dominant disorder of the vascular connective tissue. The resulting vascular malformations can occur in virtually any organ. Nosebleeds can massively impact on the quality of life of those afflicted. However, visceral manifestations are likely to be more serious, and may be comparable with a "ticking time bomb". Most commonly affected are the vascular systems of the lungs, liver, brain and gastrointestinal tract. Screening is recommended--at least with regard to the lungs. Difficult constellations of this complex condition may be successfully managed by an interdisciplinary approach.

  2. Anti-proliferative and mutagenic activities of aqueous and methanol extracts of leaves from Pereskia bleo (Kunth) DC (Cactaceae).

    Science.gov (United States)

    Er, Hui Meng; Cheng, En-Hsiang; Radhakrishnan, Ammu Kutty

    2007-09-25

    The anti-proliferative effects of the aqueous and methanol extracts of leaves of Pereskia bleo (Kunth) DC (Cactaceae) against a mouse mammary cancer cell line (4T1) and a normal mouse fibroblast cell line (NIH/3T3) were evaluated under an optimal (in culture medium containing 10% foetal bovine serum (FBS)) and a sub-optimal (in culture medium containing 0.5% FBS) conditions. Under the optimal condition, the aqueous extract showed a significant (pCactaceae) do not have appreciable anti-proliferative effect on the 4T1 and NIH/3T3 cells as the EC(50) values obtained are greater than 50 microg/mL when tested under optimal culture condition. Moreover, the aqueous extract may form mutagenic compound(s) upon the metabolisation by liver enzymes.

  3. Anti-inflammatory activity of copao (Eulychnia acida Phil., Cactaceae) fruits.

    Science.gov (United States)

    Jiménez-Aspee, Felipe; Alberto, Maria Rosa; Quispe, Cristina; Soriano, Maria del Pilar Caramantin; Theoduloz, Cristina; Zampini, Iris Catiana; Isla, Maria Ines; Schmeda-Hirschmann, Guillermo

    2015-06-01

    Copao (Eulychnia acida Phil., Cactaceae) is an endemic species occurring in northern Chile. The edible fruits of this plant are valued for its acidic and refreshing taste. Phenolic-enriched extracts from copao fruit pulp and epicarp, collected in the Elqui and Limari river valleys, were assessed by its in vitro ability to inhibit the pro-inflammatory enzymes lipoxygenase (LOX) and cyclooxygenases (COX-1 and COX-2). At 100 μg/mL, pulp extracts showed better effect towards LOX than epicarp extract, while COX-2 inhibition was observed for both epicarp and pulp samples. In general, the extracts were inactive towards COX-1. A positive correlation was observed between the anti-inflammatory activity and the main phenolic compounds found in this fruit. Copao fruits from the Limari valley, a main place of collection and commercialization, showed major activity, adding evidence on the possible health-beneficial effects of this native Chilean fruit.

  4. Estudo fitoquímico e atividade antimicrobiana de Pilosocereus pachycladus F. RITTER (CACTACEAE)

    OpenAIRE

    Brito Filho, Severino Gonçalves de

    2015-01-01

    O gênero Pilosocereus pertencente à família Cactaceae se destaca por possuir o maior número de espécies, com 35 exemplares distribuídos desde o México até o Paraguai, sendo o Brasil o país com o maior número de espécies distribuídas em diferentes ambientes, incluindo caatingas, restingas e campos rupestres. A espécie Pilosocereus pachycladus F. RITTER, conhecido como "Facheiro", é utilizada pela medicina popular contra inflamação prostática. O estudo fitoquímico pioneiro desta espécie levou a...

  5. Weber on Education and Its Administration: Prospects for Leadership in a Rationalized World.

    Science.gov (United States)

    Samier, Eugenie

    2002-01-01

    Uses Max Weber's writings to reconstruct his views on education, administration, and leadership; relates these views to some recent significant changes in education, especially higher education. Discusses problems of educational leadership in modern universities from a Weberian perspective. Provides three conclusions from Weber's writing; draws…

  6. The Rationalization of Everything? Using Ritzer's McDonaldization Thesis To Teach Weber.

    Science.gov (United States)

    Lippmann, Stephen; Aldrich, Howard

    2003-01-01

    Outlines a plan for helping undergraduate students appreciate Max Weber's theoretical achievements, teaching critical thinking about what constitutes 'the good life' in rationalized societies. Uses the book "The McDonaldization of Society" (George Ritzer) to encourage student interest in Weber's work. Describes field exercises and provides active…

  7. Weber's Critique of Advocacy in the Classroom: Critical Thinking and Civic Education.

    Science.gov (United States)

    Weaver, Mark

    1998-01-01

    Discusses the four aspects of Max Weber's argument against including advocacy in the political science classroom. Believes that Weber's critique is a useful starting point for considering the issue in relation to contemporary education. Describes two models, critical thinking and civic education, that present advocacy in the political science…

  8. Bilateral Sturge-Weber Syndrome and glaucoma controlled with Ahmed valve implant

    Directory of Open Access Journals (Sweden)

    Marcelo Jarczun Kac

    2015-02-01

    Full Text Available Sturge-Weber Syndrome is a rare neuro-oculocutaneous disorder. The authors describe the case of a 13 years old boy, presented with bilateral Sturge-Weber Syndrome and glaucoma. Surgical treatment with Ahmed valve implantation in both eyes was carried out achieving lower levels of intraocular pressure.

  9. Unusual presentation of Sturge-Weber syndrome: Progressive megalencephaly with bilateral cutaneous and cortical involvement

    Directory of Open Access Journals (Sweden)

    Kundan Mittal

    2014-01-01

    Full Text Available The Sturge Weber syndrome is characterized by developmental delay, seizures in infancy, unilateral cutaneous lesions with ipsilateral leptomeningeal enhancement. We report an unusual presentation of Sturge Weber syndrome with bilateral port wine nevus on the trunk and face along with bilateral cortical involvement in a developmentally normal child with progressive megalencephaly.

  10. Teaching Cardiac Autonomic Function Dynamics Employing the Valsalva (Valsalva-Weber) Maneuver

    Science.gov (United States)

    Junqueira, Luiz Fernando, Jr.

    2008-01-01

    In this report, a brief history of the Valsalva (Valsalva-Weber) maneuver is outlined, followed by an explanation on the use of this approach for the evaluation of cardiac autonomic function based on underlying heart rate changes. The most important methodological and interpretative aspects of the Valsalva-Weber maneuver are critically updated,…

  11. Severe, Infantile-Onset Seizure Pattern in Sturge-Weber Syndrome

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2009-10-01

    Full Text Available Researchers at the Hunter Nelson Sturge-Weber Center, Kennedy Krieger Institute, Baltimore, reviewed the records of 100 consecutive children and adults with confirmed Sturge-Weber syndrome (SWS to determine the nature and prognosis of associated seizures.

  12. Teaching Cardiac Autonomic Function Dynamics Employing the Valsalva (Valsalva-Weber) Maneuver

    Science.gov (United States)

    Junqueira, Luiz Fernando, Jr.

    2008-01-01

    In this report, a brief history of the Valsalva (Valsalva-Weber) maneuver is outlined, followed by an explanation on the use of this approach for the evaluation of cardiac autonomic function based on underlying heart rate changes. The most important methodological and interpretative aspects of the Valsalva-Weber maneuver are critically updated,…

  13. The Rationalization of Everything? Using Ritzer's McDonaldization Thesis To Teach Weber.

    Science.gov (United States)

    Lippmann, Stephen; Aldrich, Howard

    2003-01-01

    Outlines a plan for helping undergraduate students appreciate Max Weber's theoretical achievements, teaching critical thinking about what constitutes 'the good life' in rationalized societies. Uses the book "The McDonaldization of Society" (George Ritzer) to encourage student interest in Weber's work. Describes field exercises and…

  14. Wood Chemical Composition in Species of Cactaceae: The Relationship between Lignification and Stem Morphology

    Science.gov (United States)

    Canché-Escamilla, Gonzalo; Soto-Hernández, Marcos

    2015-01-01

    In Cactaceae, wood anatomy is related to stem morphology in terms of the conferred support. In species of cacti with dimorphic wood, a unique process occurs in which the cambium stops producing wide-band tracheids (WBTs) and produces fibers; this is associated with the aging of individuals and increases in size. Stem support and lignification have only been studied in fibrous tree-like species, and studies in species with WBTs or dimorphic wood are lacking. In this study, we approach this process with a chemical focus, emphasizing the role of wood lignification. We hypothesized that the degree of wood lignification in Cactaceae increases with height of the species and that its chemical composition varies with wood anatomy. To test this, we studied the chemical composition (cellulose, hemicellulose, and lignin content) in 13 species (2 WBTs wood, 3 dimorphic, and 8 fibrous) with contrasting growth forms. We also analyzed lignification in dimorphic and fibrous species to determine the chemical features of WBTs and fibers and their relationship with stem support. The lignin contents were characterized by Fourier transform infrared spectroscopy and high performance liquid chromatography. We found that 11 species have a higher percentage (>35%) of lignin in their wood than other angiosperms or gymnosperms. The lignin chemical composition in fibrous species is similar to that of other dicots, but it is markedly heterogeneous in non-fibrous species where WBTs are abundant. The lignification in WBTs is associated with the resistance to high water pressure within cells rather than the contribution to mechanical support. Dimorphic wood species are usually richer in syringyl lignin, and tree-like species with lignified rays have more guaiacyl lignin. The results suggest that wood anatomy and lignin distribution play an important role in the chemical composition of wood, and further research is needed at the cellular level. PMID:25880223

  15. Wood chemical composition in species of Cactaceae: the relationship between lignification and stem morphology.

    Directory of Open Access Journals (Sweden)

    Jorge Reyes-Rivera

    Full Text Available In Cactaceae, wood anatomy is related to stem morphology in terms of the conferred support. In species of cacti with dimorphic wood, a unique process occurs in which the cambium stops producing wide-band tracheids (WBTs and produces fibers; this is associated with the aging of individuals and increases in size. Stem support and lignification have only been studied in fibrous tree-like species, and studies in species with WBTs or dimorphic wood are lacking. In this study, we approach this process with a chemical focus, emphasizing the role of wood lignification. We hypothesized that the degree of wood lignification in Cactaceae increases with height of the species and that its chemical composition varies with wood anatomy. To test this, we studied the chemical composition (cellulose, hemicellulose, and lignin content in 13 species (2 WBTs wood, 3 dimorphic, and 8 fibrous with contrasting growth forms. We also analyzed lignification in dimorphic and fibrous species to determine the chemical features of WBTs and fibers and their relationship with stem support. The lignin contents were characterized by Fourier transform infrared spectroscopy and high performance liquid chromatography. We found that 11 species have a higher percentage (>35% of lignin in their wood than other angiosperms or gymnosperms. The lignin chemical composition in fibrous species is similar to that of other dicots, but it is markedly heterogeneous in non-fibrous species where WBTs are abundant. The lignification in WBTs is associated with the resistance to high water pressure within cells rather than the contribution to mechanical support. Dimorphic wood species are usually richer in syringyl lignin, and tree-like species with lignified rays have more guaiacyl lignin. The results suggest that wood anatomy and lignin distribution play an important role in the chemical composition of wood, and further research is needed at the cellular level.

  16. Wood chemical composition in species of Cactaceae: the relationship between lignification and stem morphology.

    Science.gov (United States)

    Reyes-Rivera, Jorge; Canché-Escamilla, Gonzalo; Soto-Hernández, Marcos; Terrazas, Teresa

    2015-01-01

    In Cactaceae, wood anatomy is related to stem morphology in terms of the conferred support. In species of cacti with dimorphic wood, a unique process occurs in which the cambium stops producing wide-band tracheids (WBTs) and produces fibers; this is associated with the aging of individuals and increases in size. Stem support and lignification have only been studied in fibrous tree-like species, and studies in species with WBTs or dimorphic wood are lacking. In this study, we approach this process with a chemical focus, emphasizing the role of wood lignification. We hypothesized that the degree of wood lignification in Cactaceae increases with height of the species and that its chemical composition varies with wood anatomy. To test this, we studied the chemical composition (cellulose, hemicellulose, and lignin content) in 13 species (2 WBTs wood, 3 dimorphic, and 8 fibrous) with contrasting growth forms. We also analyzed lignification in dimorphic and fibrous species to determine the chemical features of WBTs and fibers and their relationship with stem support. The lignin contents were characterized by Fourier transform infrared spectroscopy and high performance liquid chromatography. We found that 11 species have a higher percentage (>35%) of lignin in their wood than other angiosperms or gymnosperms. The lignin chemical composition in fibrous species is similar to that of other dicots, but it is markedly heterogeneous in non-fibrous species where WBTs are abundant. The lignification in WBTs is associated with the resistance to high water pressure within cells rather than the contribution to mechanical support. Dimorphic wood species are usually richer in syringyl lignin, and tree-like species with lignified rays have more guaiacyl lignin. The results suggest that wood anatomy and lignin distribution play an important role in the chemical composition of wood, and further research is needed at the cellular level.

  17. Spatial variation in the community of insects associated with the flowers of Pachycereus weberi (Caryophyllales: Cactaceae).

    Science.gov (United States)

    Figueroa-Castro, Dulce María; Valverde, Pedro Luis; Vite, Fernando; Carrillo-Ruiz, Hortensia

    2014-08-01

    The positive relationship between productivity and species diversity is well-known. Insect communities associated with the flowers of Cactaceae species represent an interesting system to explore the productivity-diversity relationship because branches facing the equator receive more photosynthetically active radiation and have higher productivity. Thus, flowers with contrasting orientations within an individual, and even within a single branch, might differ in productivity. Therefore, higher abundance, species richness, and diversity are expected for the insect communities associated with south-facing flowers. This hypothesis was tested in Pachycereus weberi (J.M. Coulter) Backeberg (Cactaceae). Insects within flowers with contrasting orientations were collected and its abundance, richness, and diversity were estimated. We also asked if insects prefer big flowers. Thus, flower volume was estimated and regression analyses were conducted to test if there is a positive relationship between flower size and insect abundance. Flower orientation did not affect species richness. However, species abundance and diversity were different in flowers with contrasting orientations. In general, species abundance was higher in flowers facing southwards than in north-facing flowers. On the contrary, species diversity was higher in north-facing flowers. Abundance of Coleoptera was explained by flower volume in south-facing flowers. Contrary to our hypothesis, total diversity was greater in the less productive oriented flowers. Three possible explanations are discussed to explain the low diversity found in the highly productive, south-facing flowers. Our study provides evidence for the effects of productivity on the structure of insect communities at a very small-scale.

  18. DNA barcodes for Mexican Cactaceae, plants under pressure from wild collecting.

    Science.gov (United States)

    Yesson, Chris; Bárcenas, Rolando T; Hernández, Héctor M; Ruiz-Maqueda, María de la Luz; Prado, Alberto; Rodríguez, Víctor M; Hawkins, Julie A

    2011-09-01

    DNA barcodes could be a useful tool for plant conservation. Of particular importance is the ability to identify unknown plant material, such as from customs seizures of illegally collected specimens. Mexican cacti are an example of a threatened group, under pressure because of wild collection for the xeriscaping trade and private collectors. Mexican cacti also provide a taxonomically and geographically coherent group with which to test DNA barcodes. Here, we sample the matK barcode for 528 species of Cactaceae including approximately 75% of Mexican species and test the utility of the matK region for species-level identification. We find that the matK DNA barcode can be used to identify uniquely 77% of species sampled, and 79-87% of species of particular conservation importance. However, this is far below the desired rate of 95% and there are significant issues for PCR amplification because of the variability of primer sites. Additionally, we test the nuclear ITS regions for the cactus subfamily Opuntioideae and for the genus Ariocarpus (subfamily Cactoideae). We observed higher rates of variation for ITS (86% unique for Opuntioideae sampled) but a much lower PCR success, encountering significant intra-individual polymorphism in Ariocarpus precluding the use of this marker in this taxon. We conclude that the matK region should provide useful information as a DNA barcode for Cactaceae if the problems with primers can be addressed, but matK alone is not sufficiently variable to achieve species-level identification. Additional complementary regions should be investigated as ITS is shown to be unsuitable.

  19. Expression of the KNOTTED HOMEOBOX Genes in the Cactaceae Cambial Zone Suggests Their Involvement in Wood Development.

    Science.gov (United States)

    Reyes-Rivera, Jorge; Rodríguez-Alonso, Gustavo; Petrone, Emilio; Vasco, Alejandra; Vergara-Silva, Francisco; Shishkova, Svetlana; Terrazas, Teresa

    2017-01-01

    The vascular cambium is a lateral meristem that produces secondary xylem (i.e., wood) and phloem. Different Cactaceae species develop different types of secondary xylem; however, little is known about the mechanisms underlying wood formation in the Cactaceae. The KNOTTED HOMEOBOX (KNOX) gene family encodes transcription factors that regulate plant development. The role of class I KNOX genes in the regulation of the shoot apical meristem, inflorescence architecture, and secondary growth is established in a few model species, while the functions of class II KNOX genes are less well understood, although the Arabidopsis thaliana class II KNOX protein KNAT7 is known to regulate secondary cell wall biosynthesis. To explore the involvement of the KNOX genes in the enormous variability of wood in Cactaceae, we identified orthologous genes expressed in species with fibrous (Pereskia lychnidiflora and Pilosocereus alensis), non-fibrous (Ariocarpus retusus), and dimorphic (Ferocactus pilosus) wood. Both class I and class II KNOX genes were expressed in the cactus cambial zone, including one or two class I paralogs of KNAT1, as well as one or two class II paralogs of KNAT3-KNAT4-KNAT5. While the KNOX gene SHOOTMERISTEMLESS (STM) and its ortholog ARK1 are expressed during secondary growth in the Arabidopsis and Populus stem, respectively, we did not find STM orthologs in the Cactaceae cambial zone, which suggests possible differences in the vascular cambium genetic regulatory network in these species. Importantly, while two class II KNOX paralogs from the KNAT7 clade were expressed in the cambial zone of A. retusus and F. pilosus, we did not detect KNAT7 ortholog expression in the cambial zone of P. lychnidiflora. Differences in the transcriptional repressor activity of secondary cell wall biosynthesis by the KNAT7 orthologs could therefore explain the differences in wood development in the cactus species.

  20. Carisma e Racionalismo na Sociologia de Max Weber

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    Maurizio Bach

    2011-06-01

    Full Text Available O artigo aborda o conceito de carisma de Max Weber, tomando como hipótese a relação entre a categoria do carisma e um problema de explicação, que pode ser sintetizado na pergunta: como surge o novo na história e como o mundo se transforma e toma uma nova direção? O carisma não é apenas um tipo (de dominação irracional e revolucionário; porém, principalmente, um modelo sociológico explicativo para a compreensão da mudança social. Neste sentido, Weber elabora o conceito do carisma como uma categoria complementar ao conceito de racionalismo. A história da sociedade se movimenta no campo das tensões entre o irracionalismo e o irracionalismo. O carisma pode ser vis¬to como uma chave sociológica para o entendimento dos processos sociais nos quais as aparentes tendências evolucionistas e unidimensionais do racionalismo se rompem de modo explosivo, suspendendo as instituições para ganhar o domínio e controle através de formas pessoalizadas em contextos coletivos. O processo de cotidianização do carisma, entretanto, acaba sempre em nova racionalização das esferas da vida.

  1. Sturge-Weber syndrome: a report of 14 cases

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    Lucia Parisi

    2013-02-01

    Full Text Available Sturge-Weber-Krabe syndrome (SWS, also known as encephalotrigeminalangiomatosis and named the forthfacomatosis, recall the names of the authors who first describedit in its basic clinical, radiological andanatomopathological aspects. We report here 14 cases of Sturge-Weber disease. In 6 of these, despite what had been previously described in literature, an extension of the angioma has been noted in other parts of the body. The study of these subjects stresses not only the need for a pharmacological/neuropsychomotor intervention, but alsothe need of a psychotherapeutic approach, for the emotional and affective implications thatcould derive from this syndrome. The reported cases are similar to those presented in literature for their main features. In particular, two elements are interesting: i the exceptional diffusion of the red nevousto the whole hemicorpo; and ii the evaluation of the way the patients live the disease, which has not beenpreviously considered in literature. We can conclude that SWS is a multisystem disorder that requires the neurologist to be aware of the possible endocrine, psychiatric, ophthalmological, and other medical issues that can arise and impact on the neurological status of the patients.

  2. Traumatic case of Weber's syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Shirakuni, Takayuki; Tamaki, Norihiko; Matsumoto, Satoshi; Ishida, Kazuhiko; Fujiwara, Masayasu

    1983-06-01

    The present authors encountered a rare traumatic case of Weber's syndrome in which computerized tomography (CT) revealed a hematoma localized in the tegmentum of the midbrain. This 49-year-old male was admitted because of a disturbed consciousness level caused by a hit on the right frontal area in a traffic accident. A neurological examination on admission disclosed Weber's syndrome: a dilatation of the right pupil, no reaction to direct or indirect light stimuli, ptosis of the right eyelid, lateral deviation of the right eyeball, and left hemiparesis with increased deep tendon reflexes and Babinski's sign. CT revealed a high-density area localized in the tegmentum of the midbrain, but interpeduncular and quadrigeminal cisterns were patent. After admission, his motor function and level of consciousness have showed improvement with medical treatment, but his right oculomotor palsy is unchanged. CT performed 7 days after admission showed a low-density area in place of the absorbed hematoma. In this case, the mechanism of the primary brain-stem injury could not be explained. However, there are four possible mechanisms: nerve avulsion, neurovascular friction, localized contusion, and shear strain injury. Careful consideration of the anatomical relationship shows that it is likely that the lesion was a contusional hemorrhage caused by impact on the tentorial edge.

  3. Log-Gabor Weber descriptor for face recognition

    Science.gov (United States)

    Li, Jing; Sang, Nong; Gao, Changxin

    2015-09-01

    The Log-Gabor transform, which is suitable for analyzing gradually changing data such as in iris and face images, has been widely used in image processing, pattern recognition, and computer vision. In most cases, only the magnitude or phase information of the Log-Gabor transform is considered. However, the complementary effect taken by combining magnitude and phase information simultaneously for an image-feature extraction problem has not been systematically explored in the existing works. We propose a local image descriptor for face recognition, called Log-Gabor Weber descriptor (LGWD). The novelty of our LGWD is twofold: (1) to fully utilize the information from the magnitude or phase feature of multiscale and orientation Log-Gabor transform, we apply the Weber local binary pattern operator to each transform response. (2) The encoded Log-Gabor magnitude and phase information are fused at the feature level by utilizing kernel canonical correlation analysis strategy, considering that feature level information fusion is effective when the modalities are correlated. Experimental results on the AR, Extended Yale B, and UMIST face databases, compared with those available from recent experiments reported in the literature, show that our descriptor yields a better performance than state-of-the art methods.

  4. Max Weber Revisited, the Verstehen of Migration through Qualitative Research

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    Jorge A. BUSTAMANTE

    2017-01-01

    Full Text Available Se incluye 1 una reinterpretación de un par de conceptos básicos ( Gemeinten Sinn y Verstehen de Max Weber. Se define a la migración internacional (inmigración como una relación social de carácter laboral. Se hace referencia al libro de Ernesto Galarza. La noción teórica de Verstehen entendida por Weber como un “entendimiento pro - fundo” de un fenómeno social, da lugar a la narración que hace el autor, derivada del uso del 2 método de “observación participante” de una experiencia personal. De ésta se deriva el concepto de vulnerabilidad que implica una innovación a los enfo - ques teóricos de la migración. Lo anterior se encuadra en un enfoque metodológico de investigación cualitativa de la cual 3 no se desprenden “hallazgos” en su sentido empírico, sino explicaciones complementarias del “sentido” de los hechos relatados. 4 El encuentro del autor con un compañero migrante en el centro de detención, se presenta como el origen empírico del concepto de vulnerabilidad.

  5. Dissipative extension of the Ghirardi-Rimini-Weber model

    Science.gov (United States)

    Smirne, Andrea; Vacchini, Bassano; Bassi, Angelo

    2014-12-01

    In this paper, we present an extension of the Ghirardi-Rimini-Weber model for the spontaneous collapse of the wave function. Through the inclusion of dissipation, we avoid the divergence of the energy on the long-time scale, which affects the original model. In particular, we define jump operators, which depend on the momentum of the system and lead to an exponential relaxation of the energy to a finite value. The finite asymptotic energy is naturally associated to a collapse noise with a finite temperature, which is a basic realistic feature of our extended model. Remarkably, even in the presence of a low-temperature noise, the collapse model is effective. The action of the jump operators still localizes the wave function and the relevance of the localization increases with the size of the system, according to the so-called amplification mechanism, which guarantees a unified description of the evolution of microscopic and macroscopic systems. We study in detail the features of our model, at the level of both the trajectories in the Hilbert space and the master equation for the average state of the system. In addition, we show that the dissipative Ghirardi-Rimini-Weber model, as well as the original one, can be fully characterized in a compact way by means of a proper stochastic differential equation.

  6. Molecular structures of fructans from Agave tequilana Weber var. azul.

    Science.gov (United States)

    Lopez, Mercedes G; Mancilla-Margalli, Norma A; Mendoza-Diaz, Guillermo

    2003-12-31

    Agave plants utilize crassulacean acid metabolism (CAM) for CO(2) fixation. Fructans are the principal photosynthetic products generated by agave plants. These carbohydrates are fructose-bound polymers frequently with a single glucose moiety. Agave tequilana Weber var. azul is an economically important CAM species not only because it is the sole plant allowed for tequila production but because it is a potential source of prebiotics. Because of the large amounts of carbohydrates in A. tequilana, in this study the molecular structures of its fructans were determined by fructan derivatization for linkage analysis coupled with gas chromatography-mass spectrometry (GC-MS), nuclear magnetic resonance (NMR), and matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI-TOF-MS). Fructans were extracted from 8-year-old A. tequilana plants. The linkage types present in fructans from A. tequilana were determined by permethylation followed by reductive cleavage, acetylation, and finally GC-MS analysis. Analysis of the degree of polymerization (DP) estimated by (1)H NMR integration and (13)C NMR and confirmed by MALDI-TOF-MS showed a wide DP ranging from 3 to 29 units. All of the analyses performed demonstrated that fructans from A. tequilana consist of a complex mixture of fructooligosaccharides containing principally beta(2 --> 1) linkages, but also beta(2 --> 6) and branch moieties were observed. Finally, it can be stated that fructans from A. tequilana Weber var. azul are not an inulin type as previously thought.

  7. Síndrome de Klippel-Trenaunay-Parkes-Weber com angiomatose medular Klippel-Trénaunay-Parkes-Weber syndrome with spinal cord angioma: a case report

    Directory of Open Access Journals (Sweden)

    James Pitagoras de Mattos

    1975-09-01

    Full Text Available É relatado um caso de síndrome de Klippel-Trénaunay-Parkes-Weber associada a angiomatose medular. O autor salienta ter encontrado na literatura somente uma referência com tal associação.A case of Klippel-Trénaunay-Parkes-Weber syndrome associated with spinal cord angioma is reported. The author points out that it was found only one reference in literature with such association.

  8. Sturge-Weber syndrome. Early manifestation and visualization of disease course; Sturge-Weber-Syndrom. Fruehmanifestation und Verlauf in der Bilddiagnostik

    Energy Technology Data Exchange (ETDEWEB)

    Stranzinger, E.; Huisman, T.A.G.M. [Universitaets-Kinderklinik, Abteilung Bilddiagnostik, Zuerich (Switzerland)

    2007-12-15

    The purpose of this study was to evaluate ultrasound, MRI, and CT investigations in children with Sturge-Weber syndrome. From 1996 to 2005, a total of 15 investigations of the brain performed in 6 children with Sturge-Weber syndrome were reviewed. We evaluated four ultrasound, five CT, and six MRI exams. With ultrasound an increase of the echogenicity of the periventricular white matter was depicted in the first days of life. MRI is the best modality to demonstrate the vascular malformation, the impaired cerebral venous drainage, and the atrophy of one hemisphere. One-sided periventricular hyperechogenicity on ultrasound can be an early sign of Sturge-Weber syndrome in children with a nevus flammeus. MRI is the method of choice to diagnose Sturge-Weber syndrome and to follow up these children if the neurological status of the patients changes. (orig.) [German] Mit dieser Studie wurden die fruehen Veraenderungen des Sturge-Weber-Syndroms im MRT, CT und Ultraschall verglichen und im zeitlichen Verlauf ausgewertet. Von 1996-2005 wurden bei 6 Kindern mit Sturge-Weber-Syndrom 15 bildgebende Untersuchungen des Gehirns ausgewertet. Es konnten 4 Ultraschall-, 5 CT- und 6 MRT-Untersuchungen analysiert werden. Mit der Sonographie kann eine periventrikulaere Echogenitaetserhoehung dokumentiert werden. Die MRT ist die beste Methode, um eine einseitige vaskulaere Malformation darzustellen. Einseitige Echogenitaetserhoehungen bei Kindern mit einem Naevus flammeus koennen fruehe Zeichen einer vaskulaeren Malformation bei Sturge-Weber-Syndrom sein. Die MRT ist die beste Methode, um das Sturge-Weber-Syndrom abzuklaeren und eignet sich fuer Verlaufskontrollen, falls eine Aenderung des neurologischen Befundes auftritt. (orig.)

  9. Paroxysmal vascular events in Sturge– Weber syndrome: Role of aspirin

    Directory of Open Access Journals (Sweden)

    Jyoti Sanghvi

    2014-01-01

    Full Text Available Sturge-Weber syndrome (SWS is a rare, sporadically occurring neurocutaneous disorder with a frequency of approximately 1 per 50,000. The hallmark is an intracranial leptomeningeal vascular angioma in association with a port wine nevus, usually involving ophthalmic or maxillary distribution of trigeminal nerve. Other clinical findings associated with SWS are seizures, glaucoma, hemiparesis and mental retardation. The radiological hallmark is "Tram-line" or "Gyri-form" calcification. 25 to 56% of patients experience recurrent episodes of paroxysmal focal neurological deficits in form of transient hemiparesis, which may be due to vascular ischemia or postictal in origin. EEG helps to differentiate the exact etiology, as it is normal in former. Aspirin prophylaxis in those, due to ischemia decreases their recurrences and improves overall neurological prognosis. We report a 25-month-old child of SWS with recurrent episodes of transient hemiparesis and atypical midline location of facial vascular nevus.

  10. Sturge Weber Syndrome: review of literature with case illustration

    Directory of Open Access Journals (Sweden)

    Satyarthee Guru Dutta

    2017-03-01

    Full Text Available Sturge-Weber syndrome (SWS also called as encephalotrigeminal angiomatosis, is a sporadically occurring rare neuro-cutaneous syndrome, characterized by vascular malformation with capillary venous angiomas involving face, choroidal layer of eye globe and leptomeninges responsible for ophthamological as well as neurological signs and symptoms. Authors report an interesting case, a six year old girl, who presented with seizures, facial port wine stain and normal psychomotor development. CT scan showed left cerebral hemiatrophy, left frontal and parieto occipital calcification with cortical calcification in left high frontal convexity. Cranial MRI scan also confirmed finding of left cerebral hemiatrophy and also revealed presence of gyriform cortical calcification, prominent flow voids seen in left basal ganglia. Her seizure is well controlled with antiepileptic medication. The pertinent literature is reviewed and management of such cases is discussed briefly.

  11. Noniterative Solution of Some Fermat-Weber Location Problems

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    Reuven Chen

    2011-01-01

    Full Text Available The Fermat-Weber problem of optimally locating a service facility in the Euclidean continuous two-dimensional space is usually solved by the iterative process first suggested by Weiszfeld or by later versions thereof. The methods are usually rather efficient, but exceptional problems are described in the literature in which the iterative solution is exceedingly long. These problems are such that the solution either coincides with one of the demand points or nearly coincides with it. We describe a noniterative direct alternative, based on the insight that the gradient components of the individual demand points can be considered as pooling forces with respect to the solution point. It is demonstrated that symmetrical problems can thus be optimally solved with no iterations, in analogy to finding the equilibrium point in statics. These include a well-known ill-conditioned problem and its variants, which can now be easily solved to optimality using geometrical considerations.

  12. A Weber-like law for perceptual learning.

    Science.gov (United States)

    Astle, Andrew T; Li, Roger W; Webb, Ben S; Levi, Dennis M; McGraw, Paul V

    2013-01-01

    What determines how much an organism can learn? One possibility is that the neural factors that limit sensory performance prior to learning, place an upper limit on the amount of learning that can take place. We tested this idea by comparing learning on a sensory task where performance is limited by cortical mechanisms, at two retinal eccentricities. Prior to learning, visual performance at the two eccentricities was either unmatched or equated in two different ways (through spatial scaling or visual crowding). The magnitude of learning was equivalent when initial levels of performance were matched regardless of how performance was equated. The magnitude of learning was a constant proportion of initial performance. This Weber-like law for perceptual learning demonstrates that it should be possible to predict the degree of perceptual improvement and the final level of performance that can be achieved via sensory training, regardless of what cortical constraint limits performance.

  13. Aberrant meiotic behavior in Agave tequilana Weber var. azul

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    Rodríguez-Garay Benjamin

    2002-10-01

    Full Text Available Abstract Background Agave tequilana Weber var. azul, is the only one variety permitted by federal law in México to be used for tequila production which is the most popular contemporary alcoholic beverage made from agave and recognized worldwide. Despite the economic, genetic, and ornamental value of the plant, it has not been subjected to detailed cytogenetic research, which could lead to a better understanding of its reproduction for future genetic improvement. The objective of this work was to study the meiotic behavior in pollen mother cells and its implications on the pollen viability in Agave tequilana Weber var. azul. Results The analysis of Pollen Mother Cells in anaphase I (A-I showed 82.56% of cells with a normal anaphase and, 17.44% with an irregular anaphase. In which 5.28% corresponded to cells with side arm bridges (SAB; 3.68% cells with one bridge and one fragment; 2.58% of irregular anaphase showed cells with one or two lagging chromosomes and 2.95% showed one acentric fragment; cells with two bridges and cells with two bridges and one acentric fragment were observed in frequencies of 1.60% and 1.35% respectively. In anaphase II some cells showed bridges and fragments too. Aberrant A-I cells had many shrunken or empty pollen grains (42.00% and 58.00 % viable pollen. Conclusion The observed meiotic irregularities suggest that structural chromosome aberrations have occurred, such as heterozygous inversions, sister chromatid exchanges, deletions and duplications which in turn are reflected in a low pollen viability.

  14. Weber's law, the magnitude effect and discrimination of sugar concentrations in nectar-feeding animals.

    Directory of Open Access Journals (Sweden)

    Vladislav Nachev

    Full Text Available Weber's law quantifies the perception of difference between stimuli. For instance, it can explain why we are less likely to detect the removal of three nuts from a bowl if the bowl is full than if it is nearly empty. This is an example of the magnitude effect - the phenomenon that the subjective perception of a linear difference between a pair of stimuli progressively diminishes when the average magnitude of the stimuli increases. Although discrimination performances of both human and animal subjects in various sensory modalities exhibit the magnitude effect, results sometimes systematically deviate from the quantitative predictions based on Weber's law. An attempt to reformulate the law to better fit data from acoustic discrimination tasks has been dubbed the "near-miss to Weber's law". Here, we tested the gustatory discrimination performance of nectar-feeding bats (Glossophaga soricina, in order to investigate whether the original version of Weber's law accurately predicts choice behavior in a two-alternative forced choice task. As expected, bats either preferred the sweeter of the two options or showed no preference. In 4 out of 6 bats the near-miss to Weber's law provided a better fit and Weber's law underestimated the magnitude effect. In order to test the generality of this observation in nectar-feeders, we reviewed previously published data on bats, hummingbirds, honeybees, and bumblebees. In all groups of animals the near-miss to Weber's law provided better fits than Weber's law. Furthermore, whereas the magnitude effect was stronger than predicted by Weber's law in vertebrates, it was weaker than predicted in insects. Thus nectar-feeding vertebrates and insects seem to differ in how their choice behavior changes as sugar concentration is increased. We discuss the ecological and evolutionary implications of the observed patterns of sugar concentration discrimination.

  15. Sturge-Weber disease: Diagnostic imaging and neuropathology. Die Sturge-Weber-Erkrankung: Bildgebende Diagnostik in bezug zur Neuropathologie

    Energy Technology Data Exchange (ETDEWEB)

    Henkes, H.; Huber, G.; Piepgras, U. (Universitaet des Saarlandes, Homburg/Saar (Germany, F.R.). Abt. fuer Neuroradiologie); Bittner, R. (Freie Univ. Berlin (Germany, F.R.). Strahlenklinik und Poliklinik); Sperner, J. (Freie Univ. Berlin (Germany, F.R.). Abt. fuer Neuropaediatrie); Heye, N. (Freie Univ. Berlin (Germany, F.R.). Inst. fuer Neuropathologie); Bassir, C. (Freie Univ. Berlin (Germany, F.R.). Abt. fuer Paediatrische Radiologie)

    1991-06-01

    Clinical presentation of a child with port-wine stain and seizures leads to the suspicion of Sturge-Weber disease (SWD). This diagnosis can be confirmed by the detection of a meningeal angiomatosis. In rare cases, early detection of meningeal pathology by ultrasound has been reported. Key findings are brain atrophy, gyriform cortical calcifications demonstrated by skull radiographs after the first year of life or earlier by cranial CT, and dys- or aplasia of the deep cerebral veins on angiography. Radionuclide imaging shows focal or diffuse tracer accumulation over the affected brain regions. MR demonstrates an abnormal appearance of the affected meninges, especially thickening and pathologically increased signal intensity after Gd-DTPA application. This, in association with the demonstration of abnormal enhancement in deep medullary veins, is the most characteristic finding. Contrast-enhanced MR allows early and non-invasive diagnosis of SWD, mainly by revealing leptomeningeal angiomatosis and abnormal venous vessels. (orig.).

  16. Primer reporte del empleo de marcadores ISTR en Cactaceae (Pilosocereus sp

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    Grecia Montalvo Fernández

    2010-10-01

    Full Text Available Título en inglés: First report of the employment of ISTR markers in Cactaceae (Pilosocereus sp Resumen Pilosocereus sp es una especie en peligro crítico de extinción, la única población conocida se encuentra en una mina de mármol verde, hoy abandonada, en la que su explotación produjo la disminución del 80% de la población en 3 años; en la actualidad quedan 28 ejemplares, de ellos unos pocos son adultos, de los cuales solo dos producen frutos. Una de las etapas necesaria para su recuperación es la producción de plántulas para realizar el reforzamiento de la población natural. Como las plantas obtenidas serán plantadas en condiciones naturales, donde se enfrentarán a diversas situaciones ambientales, es conveniente realizar un estudio de diversidad genética. El objetivo de este trabajo fue estimar la variabilidad genética de plántulas de Pilosocereus sp empleando la técnica Inverse Sequence Tagged Repeat (ISTR. Se realizó la germinación in vitro de semillas y se determinó la variabilidad genética de las plántulas obtenidas. Con el análisis molecular se detectaron un total de 97 bandas, de ellas el 62,8% fueron polimórficas. El mayor porcentaje de bandas polimórficas (85,7% se obtuvo con la combinación de oligonucleótidos F6/B6. Con las combinaciones de oligonucleótidos empleados se detectaron de 4 a 6 patrones de banda diferentes. La heterocigosidad media esperada fue de 0,39. Palabras clave: Cactaceae; variabilidad; extinción; polimorfismo. Abstract Pilosocereus sp is a species in critical extinction danger, the only known population is in a mine of green marble, abandoned today, but it exploitation produced the decrease of the population's 80% in 3 years, at the present time they are 28 individuals, of them some few ones are mature, of those which alone two produce fruits. One of the necessary stages for their recovery is the seedlings production to carry out the natural population's reinforcement. As the

  17. Max Weber's Types of Rationality: Cornerstones for the Analysis of Rationalization Processes in History.

    Science.gov (United States)

    Kalberg, Stephen

    1980-01-01

    Explores rationality in Max Weber's works and identifies four types of rationality which play major roles in his writing--practical, theoretical, substantive, and formal. Implications for society and education are discussed. (DB)

  18. Hindemith: Symphonic Metamorphosis on Themes of Carl Maria von Weber / Jonathan Swain

    Index Scriptorium Estoniae

    Swain, Jonathan

    1990-01-01

    Uuest heliplaadist "Hindemith: Symphonic Metamorphosis on Themes of Carl Maria von Weber, Mathis der Maler - Symphony, Nobilissima visione - suite. Atlanta Symphony Orchestra, Yoel Levi" Telarc/ Conifer CD 80 195

  19. [Max Weber. Poliitika kui elukutse ja kutsumus. Teadus kui elukutse ja kutsumus] / Hermo Kuusk

    Index Scriptorium Estoniae

    Kuusk, Hermo, 1976-

    2011-01-01

    Tutvustus: Weber, Max. Poliitika kui elukutse ja kutsumus ; Teadus kui elukutse ja kutsumus / tõlkijad: Jaan Isotamm, Henn Käärik, Kaia Sisask. Tallinn : TLU Press, 2010. (Bibliotheca controversiarum)

  20. Clinical Study on 1 Case of Klippel-Trenaunay-Weber Syndrome

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    Chang-Kil, Yoo

    2002-12-01

    Full Text Available Objective : This study was performed to evaluate the treatment of Acupuncture therapy including Herbal Acupuncture theraphy and Korean Bee Venom Theraphy in Klippel-Trenaunay-Weber Syndrome. Methods : We treated 1 case of Klippel-Trenaunay-Weber Syndrome patient with mainly Korean Bee Venom Theraphy, and herbal Acupuncture, acupuncture theraphy from 27th August, 2001 to February, 2003. Results : After 3 weeks of Korean Bee Venom Theraphy, and herbal Acupuncture, acupuncture theraphy, a remarkable improvement was made for Klippel-Trenaunay-Weber Syndrome. Conclusions : Korean Bee Venom Theraphy and other acupuncture therapies were effective in reducing the symptoms. We think that it need the further study and clinical trial for Klippel-Trenaunay-Weber Syndrome.

  1. Sturge-Weber Syndrome Associated with Early Diffuse Choroidal Hemangiaoma:A Case Report

    Institute of Scientific and Technical Information of China (English)

    Changzheng Chen; Yunxian Yu; Hongmei Zhen

    2004-01-01

    Purpose:To report indocyanine green angiography (ICGA) findings in one patient of diffuse choroidal hemangioma associated with Struge-Weber syndrome.Methods:Color fundus photography, fluorescein angiography (FA) and ICGA were performed in a patient with diffuse choroidal hemangioma associated with Sturge-Weber syndrome.Results: Three findings were unveiled by ICGA: rapid filling of diffuse choroidal hemangio's vascular network in the early stages; diffuse hyperfluorescence visual up to the late phase; no "wash-out" phenomenon was observed in the late phase.Conclusion:Indocyanine green angiography can provide information that is not detected by clinical or fluorescence angiographic examination in the patient with Sturge-Weber syndrome. ICGA may be important and sensitive in detecting the diffuse choroidal hamangioma associated with Sturge-Weber syndrome.

  2. Sturge Weber-Like Gyral Calcification Seen in Tuberous Sclerosis Complex 1.

    Science.gov (United States)

    Chatterjee, Sayan; Mukherjee, Sharmila Banerjee; Mendiratta, Vibhu; Aneja, Satinder

    2015-07-01

    A 10-year-old girl presented with poorly controlled epilepsy. On evaluation, she had microcephaly, neuro-cutaneous stigmata of tuberous sclerosis complex, profound mental retardation, and spastic hemiparesis. Computed tomography (CT) revealed a calcified subependymal nodule and extensive left gyral calcification of the temporal, parietal, and occipital regions with unilateral cerebral atrophy, radiologic features usually seen in Sturge Weber syndrome. Magnetic resonance imaging (MRI) revealed absence of tubers, enlarged choroid plexus, or leptomeningeal angiomas, thus excluding type 3 Sturge Weber syndrome. The genotype was a heterozygous mutation in exon 18 of the tuberous sclerosis type 1 gene (c.2293C>T p.Q765X). A comparison of previously reported 7 cases of Sturge Weber syndrome and tuberous sclerosis complex was made. This revealed 4 actual double phakomatoses (clinical, radiologic, or genetic phenotypes) and 3 cases with clinical phenotype of tuberous sclerosis and gyral calcifications within tubers simulating the radiologic picture of Sturge Weber syndrome.

  3. Hindemith: Symphonic Metamorphosis on Themes of Carl Maria von Weber / Jonathan Swain

    Index Scriptorium Estoniae

    Swain, Jonathan

    1990-01-01

    Uuest heliplaadist "Hindemith: Symphonic Metamorphosis on Themes of Carl Maria von Weber, Mathis der Maler - Symphony, Nobilissima visione - suite. Atlanta Symphony Orchestra, Yoel Levi" Telarc/ Conifer CD 80 195

  4. [Max Weber. Poliitika kui elukutse ja kutsumus. Teadus kui elukutse ja kutsumus] / Hermo Kuusk

    Index Scriptorium Estoniae

    Kuusk, Hermo, 1976-

    2011-01-01

    Tutvustus: Weber, Max. Poliitika kui elukutse ja kutsumus ; Teadus kui elukutse ja kutsumus / tõlkijad: Jaan Isotamm, Henn Käärik, Kaia Sisask. Tallinn : TLU Press, 2010. (Bibliotheca controversiarum)

  5. Sturge-Weber syndrome: a case report and review of literatures

    Institute of Scientific and Technical Information of China (English)

    ZHOU Jing; LI Nan-yun; ZHOU Xiao-jun; WANG Jian-dong; MA Heng-hui; ZHANG Ru-song

    2010-01-01

    @@ Sturge-Weber syndrome (SWS), or encephalotrigeminal angiomatosis, is a rare, congenital neurocutaneous syndrome characterized by unilateral facial cutaneous vascular malformation (nevus flammeus or port-wine stain) in association with ipsilateral leptomeningeal angiomatosis.

  6. Stem and root anatomy of two species of Echinopsis (Trichocereeae: Cactaceae Anatomía de la raíz y del tallo de dos especies de Echinopsis (Trichocereeae: Cactaceae

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    Joelma dos Santos Garcia

    2012-12-01

    Full Text Available This study characterizes and compares the stem and root anatomy of Echinopsis calochlora and E. rhodotricha (Cactaceae occurring in the Central-Western Region of Brazil, in Mato Grosso do Sul State. Three individuals of each species were collected, fixed, stored and prepared following usual anatomy techniques, for subsequent observation in light and scanning electronic microscopy. Echinopsis calochlora revealed uniseriated epidermis, while E. rhodotricha had patches of bisseriated epidermis; all species showed thick cuticle, parallelocytic stomata at the epidermis level, and a well-developed hypodermis. Cortical and medullary bundles are present in the studied species, as well as mucilage cells in the cortex region. The secondary phloem is composed by sieve tube elements, companion cells, axial and radial parenchyma. Sclereids were found at the outer regions of phloem in the roots. The secondary xylem is non fibrous in the stems of E. calochlora, and fibrous in the stems of E. rhodotricha and in the roots of both species. Many of these characteristics are commonly found in Cactaceae, and represent important adaptations for survival in xeric environments.Este estudio está enfocado a caracterizar y comparar la anatomía de tallos y raíces de Echinopsis calochlora y E. rhodotricha (Cactaceae que habitan en la región centro-oeste de Brasil, en el Estado de Mato Grosso do Sul. Se recolectaron 3 individuos de cada especie, los cuales fueron fijados, almacenados y preparados siguiendo las técnicas comunes de anatomía, para observarlos en microscopía de luz y electrónica de barrido. Echinopsis calochlora mostró epidermis uniseriada, mientras que la de E. rhodotricha fue biseriada; todas las especies presentaron cutícula gruesa, estomas paralelocíticos a nivel de la epidermis y una hipodermis bien desarrollada. Se presentaron haces vasculares corticales y medulares en las especies estudiadas, así como células mucilaginosas en la regi

  7. Weber-Christian panniculitis and auto-immune disease: a case report.

    Science.gov (United States)

    Allen-Mersh, T G

    1976-02-01

    A case is described of Weber-Christian panniculitis accompanied by a gammaglobulin disturbance which preceded by five years the diagnosis of an autoimmune hepatitis and pancytopenia. Also associated was the onset of diabetes mellitus, found at necropsy to be related to pancreatic islet amyloid deposition. This case reinforces the view that Weber-Christian panniculitis may be an adipose response to a variety of immunological stimuli.

  8. Síndrome de Sturge weber. Revisión

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    Otman Fernández Concepción

    1999-09-01

    Full Text Available La angiomatosis encefalotrigeminal (síndrome de Sturge-Weber es el más frecuente de los síndromes neurocutáneos con predominio de anomalías vasculares. Es una enfermedad congénita, que aparece de manera esporádica y en su forma completa consiste en la asociación de angiomas cerebral, cutáneo y ocular que se caracterizan clínicamente por una mancha color vino en la cara, epilepsia, retraso mental, déficits neurológicos (hemiparesia y hemianopsia y glaucoma. Para el diagnóstico de la enfermedad resultan de mucha utilidad los estudios de tomografía axial computadorizada y resonancia magnética nuclear craneales, así como para estudiar la relación del angioma leptomeníngeo u atrofia subyacente, importantes para el pronóstico y la conducta médica que se debe seguir. El control de las crisis epilépticas constituye un elemento capital para una evolución favorable de los pacientes. El tratamiento quirúrgico debe ser reservado para enfermos de corta edad, con afectación unilateral exclusiva, con epilepsia refractaria y sin retraso mental profundo; mediante la resección del área afectada, lobectomía o hemisferectomía, siempre que el otro hemisferio esté intacto. Se profundiza en los aspectos clínicos, diagnósticos, patogénicos y terapéuticos de esta enfermedadThe encephalotrigeminal angiomatosis (Sterge-Weber syndrome is the commonest of the neurocutaneous syndromes with predominance of vascular anomalies. Its complete form consists in the association of cerebral, cutaneous and ocular angiomas, which are characterized by a wine-clored stain, epilepsy, mental retardation, neurological deficits (hemiparesis and hemianopsia and glaucoma. CAT and cranial magnetic resonance imaging are very useful for diagnosing the disease and for studying the extension of the leptomeningeal angioma or underlying atrophy. These studies are also important for the prognosis and medical conduct to be followed. The control of the epileptic seizures

  9. Os sentidos de compreensão nas teorias de Weber e Habermas The meanings of understanding in the theories of Weber and Habermas

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    José Geraldo A. B. Poker

    2013-01-01

    Full Text Available Partindo do pressuposto de que a teoria social elaborada por Habermas em muito se assemelha àquela construída por M. Weber, procedeu-se a um estudo comparativo com a intenção de identificar as formas pelas quais Weber e Habermas elaboraram o conceito de compreensão, ao mesmo tempo em que e o elegeram, cada um a seu modo, como instrumento metodológico adequado às dificuldades da produção de conhecimento científico nas Ciências Sociais. Tanto para Weber, como para Habermas, o conhecimento nas Ciências Sociais não consegue escapar das influências diretas da subjetividade do cientista, como também não é capaz de se proteger das contingências histórico-culturais aos quais inevitavelmente toda ação humana está vinculada. Por isso, fundamentados em suas próprias razões, tanto Weber quanto Habermas apontam a compreensão como a forma possível de conhecimento, o que implica a renúncia às pretensões explicativas e à produção de teorias gerais de fundamentação última, que são típicas das ciências convencionais.Assuming that the social theory developed by Habermas is very similar to that constructed by M. Weber, this article performs a comparative study with the intention of identifying the ways in which Weber and Habermas built the concept of understanding. Both authors chose this concept, each in his own way, as a methodological tool appropriate to the difficulties of the production of scientific knowledge in the social sciences. As much for Weber as for Habermas, knowledge in the social sciences cannot escape the direct influences of the subjectivity of the scientist, as it also cannot protect itself from the historical and cultural contingencies to which every human action is inevitably linked. Therefore, based on their own reasons, both Weber and Habermas point to understanding as the possible form of knowledge, which implies the renunciation of the explanatory pretensions and general theories of ultimate

  10. The ontology of the questionnaire: Max Weber on measurement and mass investigation.

    Science.gov (United States)

    Brain, R M

    2001-12-01

    Although contemporary sociologists of science have sometimes claimed Max Weber as a methodological precursor, they have not examined Weber's own writings about science. Between 1908 and 1912 Weber published a series of critical studies of the extension of scientific authority into public life. The most notable of these concerned attempts to implement the experimental psychology or psycho-physics laboratory in factories and other real-world settings. Weber's critique centered on the problem of social measurement. He emphasized the discontinuities between the space of the laboratory and that of the factory, showing how several qualitative and historically conditioned differences between the two settings rendered the transfer of instruments and methods between them highly problematic. Weber's critical arguments prepared the ground for his greatest foray into empirical sociology, a survey he directed for the Verein für Sozialpolitik investigating the conditions and attitudes affecting the lives and performance of industrial workers. Using a different measuring instrument - the questionnaire - Weber tried to implement a concept of social measurement which implied a different ontology, drawn not from natural sciences but from the historical sciences.

  11. Ants interacting with fruits of Melocactus conoideus Buining & Brederoo (Cactaceae in southwestern Bahia, Brazil

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    Katielle Silva Brito-Kateivas

    2012-04-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2012v25n3p153   Formigas que interagem com frutos de Melocactus conoideus Buining & Brederoo (Cactaceae no sudoeste da Bahia, Brasil. O objetivo deste estudo foi verificar quais espécies de formigas interagem com os frutos de Melocactus conoideus e se existe remoção. O estudo foi realizado no Parque Municipal Serra do Periperi, município de Vitória da Conquista, Bahia, área de ocorrência da espécie. Frutos de 30 indivíduos foram marcados e observados durante o dia para identificação do comportamento das formigas. Sete espécies de cinco subfamílias de formigas foram observadas interagindo com os frutos e os gêneros mais envolvidos em interações foram Camponotus e Pheidole. Três eventos de remoção foram observados e realizados apenas pela espécie Pheidole sp. 2. Apesar de M. conoideus não ser uma espécie mirmecocórica, formigas foram registradas como dispersoras oportunistas, atividade que pode ter importantes consequências para a dinâmica populacional da espécie.

  12. Classical macroautophagy in Lobivia rauschii (Cactaceae) and possible plastidial autophagy in Tillandsia albida (Bromeliaceae) tapetum cells.

    Science.gov (United States)

    Papini, Alessio; Mosti, Stefano; van Doorn, Wouter G

    2014-05-01

    The tapetum in anthers is a tissue that undergoes programmed cell death (PCD) during the production of pollen. We observed two types of autophagy prior to cell death. In Lobivia rauschii (Cactaceae), tapetum cells showed plant-type autophagosomes-autolysosomes, which have been found previously exclusively in root meristem cells. The autophagic structures were formed by a network of tubules which apparently merged laterally, thereby sequestering a portion of the cytoplasm. The organelles observed in the sequestered material included multilamellar bodies, which have not been reported earlier in these organelles. By contrast, Tillandsia albida (Bromeliaceae) tapetum cells contained no such organelles but showed plastids that might possibly carry out autophagy, as they contained portions of the cytoplasm similar to the phenomenon reported earlier in Phaseolus and Dendrobium. However, the ultrastructure of the T. albida plastids was different from that in the previous reports. It is concluded that in L. rauschii classical plant macroautophagy was involved in degradation of the cytoplasm, while in T. albida such classical macroautophagy was not observed. Instead, the data in T. albida suggested the hypothesis that plastids are able to carry out degradation of the cytoplasm.

  13. Phylogenetic relationships in Peniocereus (Cactaceae) inferred from plastid DNA sequence data.

    Science.gov (United States)

    Arias, Salvador; Terrazas, Teresa; Arreola-Nava, Hilda J; Vázquez-Sánchez, Monserrat; Cameron, Kenneth M

    2005-10-01

    The phylogenetic relationships of Peniocereus (Cactaceae) species were studied using parsimony analyses of DNA sequence data. The plastid rpl16 and trnL-F regions were sequenced for 98 taxa including 17 species of Peniocereus, representatives from all genera of tribe Pachycereeae, four genera of tribe Hylocereeae, as well as from three additional outgroup genera of tribes Calymmantheae, Notocacteae, and Trichocereeae. Phylogenetic analyses support neither the monophyly of Peniocereus as currently circumscribed, nor the monophyly of tribe Pachycereeae since species of Peniocereus subgenus Pseudoacanthocereus are embedded within tribe Hylocereeae. Furthermore, these results show that the eight species of Peniocereus subgenus Peniocereus (Peniocereus sensu stricto) form a well-supported clade within subtribe Pachycereinae; P. serpentinus is also a member of this subtribe, but is sister to Bergerocactus. Moreover, Nyctocereus should be resurrected as a monotypic genus. Species of Peniocereus subgenus Pseudoacanthocereus are positioned among species of Acanthocereus within tribe Hylocereeae, indicating that they may be better classified within that genus. A number of morphological and anatomical characters, especially related to the presence or absence of dimorphic branches, are discussed to support these relationships.

  14. Complete nucleotide sequence and genome organization of a Cactus virus X strain from Hylocereus undatus (Cactaceae).

    Science.gov (United States)

    Liou, M R; Chen, Y R; Liou, R F

    2004-05-01

    The complete nucleotide sequence of a strain of Cactus virus X (CVX-Hu) isolated from Hylocereus undatus (Cactaceae) has been determined. Excluding the poly(A) tail, the sequence is 6614 nucleotides in length and contains seven open reading frames (ORFs). The genome organization of CVX is similar to that of other potexviruses. ORF1 encodes the putative viral replicase with conserved methyltransferase, helicase, and polymerase motifs. Within ORF1, two other ORFs were located separately in the +2 reading frame, we call these ORF6 and ORF7. ORF2, 3, and 4, which form the "triple gene block" characteristic of the potexviruses, encode proteins with molecular mass of 25, 12, and 7 KDa, respectively. ORF5 encodes the coat protein with an estimated molecular mass of 24 KDa. Sequence analysis indicated that proteins encoded by ORF1-5 display certain degree of homology to the corresponding proteins of other potexviruses. Putative product of ORF6, however, shows no significant similarity to those of other potexviruses. Phylogenetic analyses based on the replicase (the methyltransferase, helicase, and polymerase domains) and coat protein demonstrated a closer relationship of CVX with Bamboo mosaic virus, Cassava common mosaic virus, Foxtail mosaic virus, Papaya mosaic virus, and Plantago asiatica mosaic virus.

  15. Direct anthelmintic effects of Cereus jamacaru (Cactaceae) on trichostrongylid nematodes of sheep: in vivo studies.

    Science.gov (United States)

    Vatta, A F; Kandu-Lelo, C; Ademola, I O; Eloff, J N

    2011-08-25

    Following claims of anthelmintic activity of Cereus jamacaru DC (Cactaceae) by a commercial farmer, in vivo studies were conducted to determine the possible direct anthelmintic effects of the plant on ovine gastrointestinal nematodes. Eighteen sheep were infected with 4000 Haemonchus contortus and 6000 Trichostrongylus colubriformis larvae given in three divided doses over a period of three days. Once the infections were patent, the sheep were allocated to three groups and were drenched once a week for six weeks with fresh blended C. jamacaru plant material at a single (32.3g/sheep) or double dose (64.6g/sheep) or they remained as undrenched controls. Faeces were collected from individual animals on the day of treatment and three days thereafter on a weekly basis for seven weeks for faecal egg count. While there were no statistically significant differences in the egg counts between the groups, a double dose of C. jamacaru was effective in reducing the egg counts in the sheep by 18-65% over the 49 days of the experiment. Given that all animals remained in good health throughout the course of the experiment, with no adverse events occurring during the study, further experiments using higher doses or administering the plant material for a longer period of time than in the present study would be warranted.

  16. Correlated evolution of stem and leaf hydraulic traits in Pereskia (Cactaceae).

    Science.gov (United States)

    Edwards, Erika J

    2006-01-01

    Recent studies have demonstrated significant correlations between stem and leaf hydraulic properties when comparing across species within ecological communities. This implies that these traits are co-evolving, but there have been few studies addressing plant water relations within an explicitly evolutionary framework. This study tests for correlated evolution among a suite of plant water-use traits and environmental parameters in seven species of Pereskia (Cactaceae), using phylogenetically independent contrasts. There were significant evolutionary correlations between leaf-specific xylem hydraulic conductivity, Huber Value, leaf stomatal pore index, leaf venation density and leaf size, but none of these traits appeared to be correlated with environmental water availability; only two water relations traits - mid-day leaf water potentials and photosynthetic water use efficiency - correlated with estimates of moisture regime. In Pereskia, it appears that many stem and leaf hydraulic properties thought to be critical to whole-plant water use have not evolved in response to habitat shifts in water availability. This may be because of the extremely conservative stomatal behavior and particular rooting strategy demonstrated by all Pereskia species investigated. These results highlight the need for a lineage-based approach to understand the relative roles of functional traits in ecological adaptation.

  17. Studies on betaxanthin profiles of vegetables and fruits from the Chenopodiaceae and Cactaceae.

    Science.gov (United States)

    Kugler, Florian; Graneis, Stephan; Stintzing, Florian C; Carle, Reinhold

    2007-01-01

    The present study provides an update on the betaxanthin (bx) compositions of red and yellow beetroots, yellow-coloured Swiss chard petioles, and yellow-orange cactus pear. Applying RP-HPLC coupled with positive ion electrospray mass spectrometry and by comparison with UV-vis and mass spectrometric characteristics as well as retention times of semi-synthesized reference compounds, 24 betaxanthins were identified in red and yellow beetroot hypocotyls. Twenty-five and thirteen betaxanthins were present in yellow Swiss chard petioles and the cactus pear cultivar 'Gialla', respectively. Ethanolamine-bx and threonine-bx were found to be novel betaxanthins in Chenopodiaceae representatives, which to the best of our knowledge have not been reported as genuine pigments so far. Furthermore, aspartic acid-bx (miraxanthin II), lysine-bx, and methionine-bx, hitherto found in other families, were identified in the Chenopodiaceae for the first time. Additionally, tyrosine-bx (portulacaxanthin II) and tryptophan-bx have not been earlier reported to occur in the Cactaceae. These findings provide valuable phytochemical information and may be useful for a better understanding of the functional properties of betaxanthins in plants.

  18. Molecular phylogeny and character evolution in terete-stemmed Andean opuntias (Cactaceae-Opuntioideae).

    Science.gov (United States)

    Ritz, C M; Reiker, J; Charles, G; Hoxey, P; Hunt, D; Lowry, M; Stuppy, W; Taylor, N

    2012-11-01

    The cacti of tribe Tephrocacteae (Cactaceae-Opuntioideae) are adapted to diverse climatic conditions over a wide area of the southern Andes and adjacent lowlands. They exhibit a range of life forms from geophytes and cushion-plants to dwarf shrubs, shrubs or small trees. To confirm or challenge previous morphology-based classifications and molecular phylogenies, we sampled DNA sequences from the chloroplast trnK/matK region and the nuclear low copy gene phyC and compared the resulting phylogenies with previous data gathered from nuclear ribosomal DNA sequences. The here presented chloroplast and nuclear low copy gene phylogenies were mutually congruent and broadly coincident with the classification based on gross morphology and seed micro-morphology and anatomy. Reconstruction of hypothetical ancestral character states suggested that geophytes and cushion-forming species probably evolved several times from dwarf shrubby precursors. We also traced an increase of embryo size at the expense of the nucellus-derived storage tissue during the evolution of the Tephrocacteae, which is thought to be an evolutionary advantage because nutrients are then more rapidly accessible for the germinating embryo. In contrast to these highly concordant phylogenies, nuclear ribosomal DNA data sampled by a previous study yielded conflicting phylogenetic signals. Secondary structure predictions of ribosomal transcribed spacers suggested that this phylogeny is strongly influenced by the inclusion of paralogous sequence probably arisen by genome duplication during the evolution of this plant group.

  19. [Triatominae and Cactaceae: a risk for the transmission of the American trypanosomiasis in the peridomicilary space (Northeast Brazil)].

    Science.gov (United States)

    Emperaire, L; Romaña, C A

    2006-06-01

    Field observations carried in semi-arid Brazil Northeast point out the frequent association, in the peridomiciliary space, between a cactus, Cereus jamacaru, the occurrence of nests in its branches and the occurrence of two species of insects vectors of Trypanosoma cruzi, pathogenic agent of Chagas disease: Rhodnius neglectus and Triatoma pseudomaculata. The analysis of the architectural variables of this Cactaceae shows that the presence of nests, and thus of insects, depends on the traditional practices of management of this cactus. This study underlines the relevance of an integrated approach of the ecology of Triatominae for the identification of factors of risk.

  20. A new Anagyrus (Hymenoptera: Encyrtidae) from Argentina, parasitoid of Hypogeococcus sp. (Hemiptera: Pseudococcidae) on Harrisia pomanensis (Cactaceae).

    Science.gov (United States)

    Triapitsyn, Serguei V; Aguirre, María B; Logarzo, Guillermo A

    2016-05-26

    A new species of Anagyrus Howard (Hymenoptera: Encyrtidae), A. lapachosus sp. n., is described from Salta Province of Argentina as a parasitoid of Hypogeococcus sp. (Hemiptera: Pseudococcidae) on Harrisia pomanensis cactus (Cactaceae). It is a candidate "new association" biological control agent for quarantine evaluation and possible following introduction to Puerto Rico (USA) against another Hypogeococcus sp., commonly called the Harrisia cactus mealybug and often misidentified as H. pungens Granara de Willink (according to our unpublished data the latter attacks only Amaranthaceae), which devastates or threatens the native cacti there and also in some other Caribbean islands (Triapitsyn, Aguirre et al. 2014; Carrera-Martínez et al. 2015).

  1. Occidental rationalism in Max Weber's sociology of music

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    Jeremić-Molnar Dragana

    2009-01-01

    Full Text Available The paper views rationalism as a central category of an entire sociological endeavor of Max Weber in two dimensions: through the progress of mind in the understanding of 'the nature of things' and overcoming the resistance posed to the mind on that path by nature itself on the one hand, and through the struggle against irrationality of the very social beliefs and institutions which have gathered in history, on the other. When it comes to the first dimension, rationalization of music begins with the solving of the problem of the division of the octave (which cannot be divided symmetrically into equal parts and ends in the obstruction of the 'spiral' effect of intervals which the octave is composed of. (in order to ensure undisturbed successive or 'circular' lining of octaves. The other dimension is problematise in the relation with the ascetic ethics and the spirit of pentatonics, which is presented as similar to the relation between protestant ethics and the spirit of capitalism, only without the positive rationalist contributions of ascetic ethics.

  2. Ilse Weber: un refugio en el cielo de Theresienstadt

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    Carlos Morales

    2013-03-01

    Full Text Available Ilse Weber (1903-1944 tuvo un papel de enorme envergadura en Theresienstadt. Su reputación como poeta y dramaturga del mundo infantil le facilitó, sin duda, una rápida integración en el amplio círculo de artistas e intelectuales checos que malvivían como podían en aquel “gueto especial”. Convertida en enfermera jefe de la comunidad judía del campo, durante los casi dos años que duró su residencia en el infierno utilizó la literatura como una herramienta terapéutica más orientada, casi obsesivamente, a ofrecer un poco de sentido a las vidas humilladas de quienes se hacinaban en la miserable enfermería que tenía a su cargo y, de un modo muy especial, a paliar con una guitarra en la mano, el profundo desconcierto emocional de los niños que aguardaban en Theresienstadt el turno de su muerte.

  3. Intellectual and Adaptive Functioning in Sturge-Weber Syndrome

    Science.gov (United States)

    Kavanaugh, Brian; Sreenivasan, Aditya; Bachur, Catherine; Papazoglou, Aimilia; Comi, Anne; Zabel, T. Andrew

    2015-01-01

    The present study examined the intellectual and adaptive functioning in a sample of children and young adults with Sturge-Weber Syndrome. A total of 80 research participants from a SWS study database underwent full neurological evaluation as part of their participation or concurrent medical care. Twenty-nine of the participants received neuropsychological evaluations. Analyses indicated no significant demographic or neurological differences between those who did and did not receive neuropsychological evaluations. Overall, the neuropsychological evaluation sample displayed significantly lower functioning relative to published normative data across domains of intellectual and adaptive functioning. 32% of the sample displayed impaired performance (standard score ≤ 75) in intellectual functioning and 58% displayed impaired performance in adaptive functioning. Hemiparesis status independently predicted overall adaptive functioning while seizure frequency independently predicted overall intellectual functioning. Younger participants displayed significantly higher (more intact) ratings in adaptive functioning compared to older participants, specifically in overall adaptive functioning, motor skills, and community living skills. A composite measure of neurological status (SWS-NRS) incorporating seizure and hemiparesis status effectively distinguished between individuals with impaired or non-impaired adaptive and intellectual functioning, and showed promise as a screening method for identifying individuals with more involved intellectual and/or adaptive needs. PMID:25952468

  4. Diagnostic dilemma: Sturge-Weber syndrome, without facial nevus

    Directory of Open Access Journals (Sweden)

    Paresh Zanzmera

    2015-01-01

    Full Text Available Sturge-Weber syndrome (SWS, a rare sporadic neurocutaneous disease, is characterized by a congenital unilateral port-wine nevus affecting the area innervated by V1, ipsilateral leptomeningeal angiomatosis, and calcification in the occipital or frontoparietal region and glaucoma/vascular eye abnormality. Three types of SWS have been described in literature: Type I (classic demonstrates facial and leptomeningeal angioma, often with glaucoma; type II has facial angioma and glaucoma, with no evidence of intracranial lesions; and type III (rarest presents with only leptomeningeal angioma. Only a few cases of type III SWS have been reported. Here, we report a case of a seven-year-old boy with focal complex partial seizure, who was diagnosed with SWS without facial nevus. Recognition of this type of SWS is important, as our patient had been misdiagnosed and received inappropriate antiepileptic drugs for six years. We suggest that in the appropriate clinical scenario, the diagnosis of SWS without facial nevus should be considered before labelling idiopathic or cryptogenic localization-related epilepsy, and gadolinium-enhanced magnetic resonance imaging (MRI should be done in clinically suspicious cases of SWS, without facial nevus.

  5. Patterns of growth and mortality in the endangered Nichol's Turk's Head Cactus (Echinocactus horizonthalonius var. nicholii L. Benson; Cactaceae) in Southeastern Arizona

    Science.gov (United States)

    M. E. McIntosh; L. A. McDade; A. E. Boyd; P. D. Jenkins

    2007-01-01

    Nichol’s Turk’s Head Cactus (Echinocactus horizonthalonius var. nicholii L. Benson; Cactaceae) occurs in a few isolated populations in the Sonoran desert of southcentral Arizona (Pima and Pinal counties). The populations of this variety are disjunct from the more widespread variety that occurs in the Chihuahuan desert of Texas and...

  6. Studies on the Biology of Hypogeococcus pungens (sensu stricto) (Hemiptera: Pseudococcidae) in Argentina to Aid the Identification of the Mealybug Pest of Cactaceae in Puerto Rico.

    Science.gov (United States)

    Aguirre, M B; Diaz-Soltero, H; Claps, L E; Saracho Bottero, A; Triapitsyn, S; Hasson, E; Logarzo, G A

    2016-01-01

    Hypogeococcus pungens Granara de Willink, sensu stricto, is a serious pest of cacti in Puerto Rico threating many Caribbean islands. A classical biological control program for H. pungens was initiated for Puerto Rico in 2010 with a survey for natural enemies of H. pungens in its native range of Argentina. Biological differences were observed between populations of H. pungens sampled on Amaranthaceae and Cactaceae. Molecular studies suggested that H. pungens populations from different host plant families are likely a complex of species. Our objective was to study the biology of H. pungens sensu stricto on specimens collected in the same locality and host plant as the holotype [Tucumán Province, Argentina; Alternanthera pungens Kunth (Amaranthaceae)]. We were interested in the reproductive biology of females, longevity and survival of adults, the effect of temperature on the development, and nymph performance (survival and development) on five Cactaceae species. We found that H. pungens s.s showed marked biological differences from the populations collected on Cactaceae and exported to Australia for the biological control of the cactus Harrisia spp. The main differences were the presence of deuterotoky parthenogenesis and the fact that H. pungens did not attack Cactaceae in the laboratory. Our results provide biological evidence that H. pungens is a species complex. We propose that the population introduced to Australia is neither Hypogeococcus festerianus Lizer y Trelles nor H. pungens, but an undescribed species with three circuli, and that the Hypogeococcus pest of cacti in Puerto Rico is not H. pungens.

  7. Studies on the Biology of Hypogeococcus pungens (sensu stricto) (Hemiptera: Pseudococcidae) in Argentina to Aid the Identification of the Mealybug Pest of Cactaceae in Puerto Rico

    Science.gov (United States)

    Aguirre, M. B.; Diaz-Soltero, H.; Claps, L. E.; Saracho Bottero, A.; Triapitsyn, S.; Hasson, E.; Logarzo, G. A.

    2016-01-01

    Hypogeococcus pungens Granara de Willink, sensu stricto, is a serious pest of cacti in Puerto Rico threating many Caribbean islands. A classical biological control program for H. pungens was initiated for Puerto Rico in 2010 with a survey for natural enemies of H. pungens in its native range of Argentina. Biological differences were observed between populations of H. pungens sampled on Amaranthaceae and Cactaceae. Molecular studies suggested that H. pungens populations from different host plant families are likely a complex of species. Our objective was to study the biology of H. pungens sensu stricto on specimens collected in the same locality and host plant as the holotype [Tucumán Province, Argentina; Alternanthera pungens Kunth (Amaranthaceae)]. We were interested in the reproductive biology of females, longevity and survival of adults, the effect of temperature on the development, and nymph performance (survival and development) on five Cactaceae species. We found that H. pungens s.s. showed marked biological differences from the populations collected on Cactaceae and exported to Australia for the biological control of the cactus Harrisia spp. The main differences were the presence of deuterotoky parthenogenesis and the fact that H. pungens did not attack Cactaceae in the laboratory. Our results provide biological evidence that H. pungens is a species complex. We propose that the population introduced to Australia is neither Hypogeococcus festerianus Lizer y Trelles nor H. pungens, but an undescribed species with three circuli, and that the Hypogeococcus pest of cacti in Puerto Rico is not H. pungens. PMID:27324585

  8. Is in vitro micrografting a possible valid alternative to traditional micropropagation in Cactaceae? Pelecyphora aselliformis as a case study.

    Science.gov (United States)

    Badalamenti, Ornella; Carra, Angela; Oddo, Elisabetta; Carimi, Francesco; Sajeva, Maurizio

    2016-01-01

    Several taxa of Cactaceae are endangered by overcollection for commercial purposes, and most of the family is included in the Convention on International Trade in Endangered Species of Fauna and Flora (CITES). Micropropagation may play a key role to keep the pressure off wild populations and contribute to ex situ conservation of endangered taxa. One of the limits of micropropagation is the species-specific requirement of plant regulators for each taxon and sometimes even for different genotypes. With the micrografting technique the rootstock directly provides the scion with the necessary hormonal requirements. In this paper we present data on in vitro grafting of Pelecyphora aselliformis Ehrenberg, an Appendix I CITES listed species critically endangered and sought after by the horticultural trade, on micropropagated Opuntia ficus-indica Miller. Apical and sub-apical scions of P. aselliformis were used to perform micrografting with a successful rate of 97 and 81 % respectively. Survival rate after ex vivo transfer was 85 %. We hypothesize that this method could be applied to other endangered, slow growing taxa of Cactaceae thus contributing to the conservation of this endangered family.

  9. Correction of Facial Deformity in Sturge–Weber Syndrome

    Science.gov (United States)

    Yamaguchi, Kazuaki; Lonic, Daniel; Chen, Chit

    2016-01-01

    Background: Although previous studies have reported soft-tissue management in surgical treatment of Sturge–Weber syndrome (SWS), there are few reports describing facial bone surgery in this patient group. The purpose of this study is to examine the validity of our multidisciplinary algorithm for correcting facial deformities associated with SWS. To the best of our knowledge, this is the first study on orthognathic surgery for SWS patients. Methods: A retrospective chart review included 2 SWS patients who completed the surgical treatment algorithm. Radiographic and clinical data were recorded, and a treatment algorithm was derived. Results: According to the Roach classification, the first patient was classified as type I presenting with both facial and leptomeningeal vascular anomalies without glaucoma and the second patient as type II presenting only with a hemifacial capillary malformation. Considering positive findings in seizure history and intracranial vascular anomalies in the first case, the anesthetic management was modified to omit hypotensive anesthesia because of the potential risk of intracranial pressure elevation. Primarily, both patients underwent 2-jaw orthognathic surgery and facial bone contouring including genioplasty, zygomatic reduction, buccal fat pad removal, and masseter reduction without major complications. In the second step, the volume and distribution of facial soft tissues were altered by surgical resection and reposition. Both patients were satisfied with the surgical result. Conclusions: Our multidisciplinary algorithm can systematically detect potential risk factors. Correction of the asymmetric face by successive bone and soft-tissue surgery enables the patients to reduce their psychosocial burden and increase their quality of life. PMID:27622111

  10. Optimizing Barrier Removal to Restore Connectivity in Utah's Weber Basin

    Science.gov (United States)

    Kraft, M.; Null, S. E.

    2016-12-01

    Instream barriers, such as dams, culverts and diversions are economically important for water supply, but negatively affect river ecosystems and disrupt hydrologic processes. Removal of uneconomical and aging in-stream barriers to improve habitat connectivity is increasingly used to restore river connectivity. Most past barrier removal projects focused on individual barriers using a score-and-rank technique, ignoring cumulative change from multiple, spatially-connected barrier removals. Similarly, most water supply models optimize either human water use or aquatic connectivity, failing to holistically represent human and environmental benefits. In this study, a dual objective optimization model identified in-stream barriers that impede aquatic habitat connectivity for trout, using streamflow, temperature, and channel gradient as indicators of aquatic habitat suitability. Water scarcity costs are minimized using agricultural and urban economic penalty functions to incorporate water supply benefits and a budget monetizes costs of removing small barriers like culverts and road crossings. The optimization model developed is applied to a case study in Utah's Weber basin to prioritize removal of the most environmentally harmful barriers, while maintaining human water uses. The dual objective solution basis was developed to quantify and graphically visualize tradeoffs between connected quality-weighted habitat for Bonneville cutthroat trout and economic water uses. Modeled results include a spectrum of barrier removal alternatives based on budget and quality-weighted reconnected habitat that can be communicated with local stakeholders. This research will help prioritize barrier removals and future restoration decisions. The modeling approach expands current barrier removal optimization methods by explicitly including economic and environmental water uses.

  11. Estudo anatômico de folha e caule de Pereskia aculeata Mill. (Cactaceae

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    M.R. Duarte

    2005-06-01

    Full Text Available Pereskia aculeata Mill. (Cactaceae é uma trepadeira arbustiva conhecida comumente como ora-pro-nobis. Apresenta elevado teor de mucilagem e proteína, sendo empregada na indústria alimentícia e farmacêutica. Na medicina popular, é utilizada externamente como emoliente. Este trabalho teve por objetivo estudar a anatomia foliar e caulinar da planta, a fim de fornecer informações complementares à sua identificação e aplicáveis ao seu controle de qualidade. Folhas adultas e fragmentos de caules foram fixados, seccionados à mão livre e corados com azul de astra e fucsina básica ou com azul de toluidina. Testes histoquímicos e análise ultra-estrutural de superfície foram realizados. A folha é simples e elíptica. Possui epiderme uniestratificada, estômatos paracíticos em ambas as faces, mesofilo que tende a ser dorsiventral, contendo numerosas drusas de oxalato de cálcio e células isodiamétricas grandes com conteúdo mucilaginoso. A nervura central é percorrida por um feixe vascular colateral em arco aberto. O pecíolo tem secção plano-convexa e um feixe colateral em formato de arco fechado. O caule, em estrutura secundária incipiente, possui epiderme unisseriada, colênquima angular, parênquima cortical com muitos amiloplastos, calotas de fibras perivasculares e organização vascular colateral. No córtex e na medula, são observadas numerosas cavidades com conteúdo mucilaginoso e drusas de oxalato de cálcio, estas também presentes no floema.

  12. Vivipary and offspring survival in the epiphytic cactus Epiphyllum phyllanthus (Cactaceae).

    Science.gov (United States)

    Cota-Sánchez, J Hugo; Abreu, Deusa D

    2007-01-01

    Vivipary, the germination of seeds before they are shed from the parent plant, is a rare event in angiosperms involving complex ecophysiological processes. Pseudovivipary and cryptovivipary occur in approximately 30 (2%) species of the cactus family. A remarkable case of vivipary in Epiphyllum phyllanthus is described here. Information is provided regarding the biology of viviparous fruits, morphology, mortality, survival rates of viviparous offspring, and some eco-evolutionary implications of this reproductive strategy in the Cactaceae. This epiphytic cactus has no host-specific relationship. A low proportion (33.3%) of individuals produced viviparous fruits. Seed number/fruit varied from 197 to 230 with percentage of viviparous germination from 97.5% to 99%. The viviparous seedlings exhibited normal development and were no different from non-viviparous offspring. Transplanting experiments showed that the first week is critical for seedling establishment, and high mortality occurred in the three treatments used: 69% on the phorophyte surface, 58.6% on the ground, and 44.8% under controlled conditions. The number of survivors gradually stabilized, and the contribution to establishment was comparable in each of the treatments after the acclimation phase. It is suggested that vivipary is associated with thermoregulation, parental care, conspecific nursing, and rapid seedling establishment. Germination is not a limiting factor in the perpetuation of this viviparous species, but seedling establishment is. In viviparous individuals of E. phyllanthus, seedling mortality during establishment rather than failure to germinate within the fruit is a limiting factor affecting local population density. Overall, viviparity is an intrinsic, genetic event involving high metabolic costs favouring germination and dispersal of the fittest offspring regardless of substrate and environmental conditions.

  13. Molecular characterisation of potexviruses isolated from three different genera in the family Cactaceae.

    Science.gov (United States)

    Koenig, R; Pleij, C W A; Loss, S; Burgermeister, W; Aust, H; Schiemann, J

    2004-05-01

    The genome properties of three potexviruses which previously had been isolated from different genera in the family Cactaceae and had been found to be only distantly related serologically have been studied. The sequence of the 3040 3' terminal nucleotides of the genomic RNA of isolate K11 from Schlumbergera bridgesii and the complete RNA sequences of isolates B1 and CC10 from Zygocactus sp. and Opuntia sp., respectively, were determined. Starting sequences were obtained by means of immunocapture reverse transcription PCR using primers derived from highly conserved sequences in other potexviral RNAs. The known parts of the sequences were extended by means of random-primed cDNAs and specific primers derived from the known parts of the sequences. The genome structure of the three viruses resembles that of other potexviruses. The conserved motifs typical for replication-associated proteins, triple gene block (TGB) proteins and coat proteins of potexviruses were readily identified in the translation products of the five open reading frames. The 3' untranslated regions of the three RNAs are folded into secondary structures containing three characteristic hairpins. Rather low percentages of amino acid sequence identities ranging from 62% to 76% for the coat proteins and 41% to 49% for TGB proteins 3 suggest that these viruses should be regarded as distinct virus species for which the names Zygocactus virus X, Schlumbergera virus X and Opuntia virus X are proposed. It is also suggested that the name Cactus virus X which originally was coined for all three virus isolates should no longer be used.

  14. Spine micromorphology of normal and hyperhydric Mammillaria gracilis Pfeiff. (Cactaceae) shoots.

    Science.gov (United States)

    Peharec, P; Posilović, H; Balen, B; Krsnik-Rasol, M

    2010-07-01

    Artificial conditions of tissue culture affect growth and physiology of crassulacean acid metabolism plants which often results in formation of hyperhydric shoots. In in vitro conditions Mammillaria gracilis Pfeiff. (Cactaceae) growth switches from organized to unorganized way, producing a habituated organogenic callus which simultaneously regenerates morphologically normal as well as altered hyperhydric shoots. In this study, influence of tissue culture conditions on morphology of cactus spines of normal and hyperhydric shoots was investigated. Spines of pot-grown Mammillaria plants and of in vitro regenerated shoots were examined with stereo microscope and scanning electron microscope. The pot-grown plants had 16-17 spines per areole. In vitro grown normal shoots, even though they kept typical shoot morphology, had lower number of spines (11-12) and altered spine morphology. This difference was even more pronounced in spine number (six to seven) and morphology of the hyperhydric shoots. Scanning electron microscopy analysis revealed remarkable differences in micromorphology of spine surface between pot-grown and in vitro grown shoots. Spines of in vitro grown normal shoots showed numerous long trichomes, which were more elongated on spines of the hyperhydric shoots; the corresponding structures on spine surface of pot-grown plants were noticed only as small protrusions. Scanning electron microscopy morphometric studies showed that the spines of pot-grown plants were significantly longer compared to the spines of shoots grown in tissue culture. Moreover, transverse section shape varies from elliptical in pot-grown plants to circular in normal and hyperhydric shoots grown in vitro. Cluster and correspondence analyses performed on the scanning electron microscope obtained results suggest great variability among spines of pot-grown plants. Spines of in vitro grown normal and hyperhydric shoots showed low level of morphological variation among themselves despite the

  15. How and why does the areole meristem move in Echinocereus (Cactaceae)?

    Science.gov (United States)

    Sánchez, Daniel; Grego-Valencia, Dalia; Terrazas, Teresa; Arias, Salvador

    2015-01-01

    In Cactaceae, the areole is the organ that forms the leaves, spines and buds. Apparently, the genus Echinocereus develops enclosed buds that break through the epidermis of the stem adjacent to the areole; this trait most likely represents a synapomorphy of Echinocereus. The development of the areole is investigated here in order to understand the anatomical modifications that lead to internal bud development and to supplement anatomical knowledge of plants that do not behave according to classical shoot theory. The external morphology of the areole was documented and the anatomy was studied using tissue clearing, scanning electron microscopy and light microscopy for 50 species that represent the recognized clades and sections of the traditional classification of the genus, including Morangaya pensilis (Echinocereus pensilis). In Echinocereus, the areole is sealed by the periderm, and the areole meristem is moved and enclosed by the differential growth of the epidermis and surrounding cortex. The enclosed areole meristem is differentiated in a vegetative or floral bud, which develops internally and breaks through the epidermis of the stem. In Morangaya pensilis, the areole is not sealed by the periderm and the areole meristem is not enclosed. The enclosed areole meristem and internal bud development are understood to be an adaptation to protect the meristem and the bud from low temperatures. The anatomical evidence supports the hypothesis that the enclosed bud represents one synapomorphy for Echinocereus and also supports the exclusion of Morangaya from Echinocereus. © The Author 2014. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  16. Environmental Setting of the Sugar Creek and Leary Weber Ditch Basins, Indiana, 2002-04

    Science.gov (United States)

    Lathrop, Timothy R.

    2006-01-01

    The Leary Weber Ditch Basin is nested within the Sugar Creek Basin in central Indiana. These basins make up one of the five study sites in the Nation selected for the Agricultural Chemicals: Sources, Transport, and Fate topical study, a part of the U.S. Geological Survey’s National Water-Quality Assessment Program. In this topical study, identifying the natural factors and human influences affecting water quality in the Leary Weber Ditch and Sugar Creek Basins are the focus of the assessment. A detailed comparison between the environmental settings of these basins is presented. Specifics of the topical study design as implemented in the Leary Weber Ditch and Sugar Creek Basins are described.

  17. Osler-Weber-Rendu disease: A rare cause of recurrent hemoptysis.

    Science.gov (United States)

    Khoja, Amir M; Jalan, Rahul K; Jain, Dheeraj L; Kajale, Omkar V

    2016-01-01

    Osler-Weber-Rendu disease, also known as hereditary hemorrhagic telangiectasia, is a rare autosomal dominant condition causing systemic fibrovascular dysplasia. It has an incidence of 1-2/100,000. Phenotypic variation is extreme ranging from asymptomatic to severely symptomatic, from cases with no or few mucocutaneous lesions to those with diffuse cutaneous telangiectasia. We discuss a case of Osler-Weber-Rendu disease causing diffuse cutaneous telangiectasia and hemoptysis. The patient presented with complaints of hemoptysis and was extensively examined and investigated before being diagnosed with Osler-Weber-Rendu disease. We successfully managed the patient's hemoptysis by bronchial artery embolization. This case emphasizes the need for careful examination and investigation and to consider such rare diseases when all the common causes of hemoptysis are ruled out. An early and proper diagnosis will lead to more effective management of such a rare disease with few treatment options available.

  18. Osler-Weber-Rendu disease: A rare cause of recurrent hemoptysis

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    Amir M Khoja

    2016-01-01

    Full Text Available Osler-Weber-Rendu disease, also known as hereditary hemorrhagic telangiectasia, is a rare autosomal dominant condition causing systemic fibrovascular dysplasia. It has an incidence of 1-2/100,000. Phenotypic variation is extreme ranging from asymptomatic to severely symptomatic, from cases with no or few mucocutaneous lesions to those with diffuse cutaneous telangiectasia. We discuss a case of Osler-Weber-Rendu disease causing diffuse cutaneous telangiectasia and hemoptysis. The patient presented with complaints of hemoptysis and was extensively examined and investigated before being diagnosed with Osler-Weber-Rendu disease. We successfully managed the patient′s hemoptysis by bronchial artery embolization.  This case emphasizes the need for careful examination and investigation and to consider such rare diseases when all the common causes of hemoptysis are ruled out. An early and proper diagnosis will lead to more effective management of such a rare disease with few treatment options available.

  19. The Effect of Agave tequilana Weber Inulin on Postprandial Ghrelin Concentration in Obese Patients.

    Science.gov (United States)

    Contreras-Haro, Betsabe; Robles-Cervantes, Jose A; Gonzalez-Ortiz, Manuel; Martinez-Abundis, Esperanza; Espinel-Bermudez, Claudia; Gallegos-Arreola, Martha P; Morgado-Castillo, Karina C

    2017-02-01

    This study was performed to investigate the effect of Agave tequilana Weber inulin on postprandial ghrelin levels in obese patients. A randomized, double-blind, cross-over design was performed. A total of 14 patients were allocated into two groups: one group received a drink that contained 500 mL lemon water, 24 g of A. tequilana Weber inulin, and 75 g glucose and the other group received a placebo drink with 500 mL lemon drink and 75 g of glucose. After a 7-day washout period, the groups were crossed. The primary outcome measure was postprandial ghrelin levels between minute 240 and minute 270. A. tequilana Weber inulin did not change postprandial ghrelin concentration in obese patients.

  20. The concept of adequate causation and Max Weber's comparative sociology of religion.

    Science.gov (United States)

    Buss, A

    1999-06-01

    Max Weber's The Protestant Ethic and the Spirit of Capitalism, studied in isolation, shows mainly an elective affinity or an adequacy on the level of meaning between the Protestant ethic and the 'spirit' of capitalism. Here it is suggested that Weber's subsequent essays on 'The Economic Ethics of World Religions' are the result of his opinion that adequacy on the level of meaning needs and can be verified by causal adequacy. After some introductory remarks, particularly on elective affinity, the paper tries to develop the concept of adequate causation and the related concept of objective possibility on the basis of the work of v. Kries on whom Weber heavily relied. In the second part, this concept is used to show how the study of the economic ethics of India, China, Rome and orthodox Russia can support the thesis that the 'spirit' of capitalism, although it may not have been caused by the Protestant ethic, was perhaps adequately caused by it.

  1. Max Weber: entre relativismo e individualismo metodológico. Entrevista con Michel Maffesoli

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    Rafael Arriaga Martínez

    2012-01-01

    Full Text Available ¿Max Weber, relativista? Sí, sostiene Michel Maffesoli (1985. Para Raymond Boudon, líder intelectual de la corriente de pensamiento sociológico inspirada en la teoría de la racionalidad de Weber, la lectura relativista de la obra de éste sería inaceptable. A pesar de las diferencias de posición teórica y desacuerdos entre ambos autores en torno a la obra de Weber podríamos bien retener como hipótesis de trabajo la idea de la irreductibilidad de Weber a una sola posición epistemológica, como lo propone Maffesoli. Es, pues, bajo este aspecto y en el marco de las diferencias de posición entre ambos autores que tratamos de considerar esta otra interpretación relativista que hace Maffesoli de la sociología comprensiva de Weber. Daremos cuenta de ello a través de una entrevista que el sociólogo francés nos ha amablemente acordado. Se trata, entonces, a de discernir los aspectos de la teoría sociológica de Weber que más marcan la obra de Maffesoli y b de acentuar al mismo tiempo las diferencias de posición existentes entre uno y otro, entre la lectura relativista que nos propone Maffesoli y la que predica Boudon en el marco del individualismo metodológico.

  2. A Course between Bureaucracy and Charisma: A Pedagogical Reading of Max Weber's Social Theory

    Science.gov (United States)

    Fantuzzo, John

    2015-01-01

    Philosophers of education tend to mention Max Weber's social theory in passing, assuming its importance and presuming its comprehension, but few have paused to consider how Weber's social theory might consciously inform educational theory and research, and none have done so comprehensively. The aim of this article is to begin this…

  3. A Contingent Affinity: Max Weber, Carl Schmitt, and the Challenge of Modern Politics.

    Science.gov (United States)

    Magalhães, Pedro T

    2016-01-01

    The thesis that the theory of charismatic-plebiscitary democracy developed by Max Weber in the wake of the Weimar Republic was developed to its ultimate consequences by Carl Schmitt in the final crisis of Weimar has been hotly debated since it was first advanced in the 1950s. This paper proposes a fresh look at the controversy. By comparing both authors' concepts of politics in their relation to the problem of modernity, it argues that the Weber-Schmitt affair is neither a baseless legend nor a case of natural continuity. Instead, it should rather be understood in terms of a contingent affinity.

  4. Phakomatosis pigmentovascularis presenting with Sturge-Weber syndrome and Klippel-Trenaunay syndrome

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    Sumit Sen

    2015-01-01

    Full Text Available Phakomatosis pigmentovascularis (PPV is a rare cutaneous disorder characterized by combination of capillary malformation and other pigmented naevi. Four types and two subtypes have been described where subtype ′a′ present only with cutaneous form and subtype ′b′ also with systemic association like in Sturge-Weber syndrome or Klippel-Trenaunay syndrome. Hereby, we report a case where our patient presented with port-wine stain, Nevus of Ota, Sturge-Weber syndrome, and Klippel-Trenaunay syndrome; which has made it a rare combination.

  5. Phakomatosis Pigmentovascularis Presenting with Sturge-Weber Syndrome and Klippel-Trenaunay Syndrome

    Science.gov (United States)

    Sen, Sumit; Bala, Sanchaita; Halder, Chinmay; Ahar, Rahul; Gangopadhyay, Anusree

    2015-01-01

    Phakomatosis pigmentovascularis (PPV) is a rare cutaneous disorder characterized by combination of capillary malformation and other pigmented naevi. Four types and two subtypes have been described where subtype ‘a’ present only with cutaneous form and subtype ‘b’ also with systemic association like in Sturge-Weber syndrome or Klippel-Trenaunay syndrome. Hereby, we report a case where our patient presented with port-wine stain, Nevus of Ota, Sturge-Weber syndrome, and Klippel-Trenaunay syndrome; which has made it a rare combination. PMID:25657402

  6. Talcott Parsons’ Early Essay on Capitalism. An American Interpretation of Werner Sombart and Max Weber

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    Mariano Longo

    2015-03-01

    Full Text Available The paper analyzes Talcott Parsons’ early essay published in two issues of The Journal of Political Economy in 1928 and 1929. ““Capitalism” in recent German Literature: Sombart and Weber”, which introduces both Sombart and Weber to the American public. It represents a relevant moment in the development of Parsons as a sociologist. After discussing Parsons’ interpretation of both Sombart’s and Weber’s theories about the origin of Capitalism, the paper gives an interpretation of Parsons’ role in the establishment of Weber as a founding father of sociology and the relative irrelevance of Sombart as a sociological classic.

  7. A teoria econômica dos Estados antigos: a questão do capitalismo na Antiguidade na visão de Weber Economic theory of the ancient States: Weber's view of the question of capitalism in Antiquity

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    Jürgen Deininger

    2012-01-01

    Full Text Available O artigo discute o problema do capitalismo na Antiguidade, tal como Max Weber o formulou. Trata, portanto, de reconstruir o entendimento de Weber desse fenômeno, ou seja, das formas de organização econômica na Antiguidade. A análise do texto de Weber de 1908, "Agrarverhältnissen im Altertum" [Relações agrárias na Antiguidade], oferece a base de toda a discussão; mas também são abordados o contexto intelectual da problematização de Weber, como a polêmica Meyer-Bücher acerca dos fundamentos da economia antiga, assim como aspectos específicos do capitalismo antigo, no entender de Weber, em que a relação com a dimensão política ocupa papel de destaque.The article discusses the problem of capitalism in Antiquity, as formulated by Max Weber. It seeks to reconstruct Weber's understanding of the phenomenon, that is, the forms of economic organization in Antiquity. An analysis of Weber's 1908 text "Agrarverhältnissen im Altertum" [Agrarian relations in Antiquity] provides the basis for the discussion as a whole. However the article also examines the intellectual context of Weber's problematization, such as the Meyer-Bücher polemic concerning the fundamental aspects of the ancient economy, as well as specific aspects of ancient capitalism, as Weber understood them, where the relation with the political dimension assumes a prominent role.

  8. Religião, educação e economia em Max Weber = Religion, education and the economy in Max Weber

    OpenAIRE

    2014-01-01

    Este artigo propõe relacionar a religião, a educação e a economia em Max Weber. Apesar de não ter escrito uma obra específica sobre a educação, é possível verificar em escritos como Confucionismo e taoísmo um esboço de tipos ideais da educação encontrados em qualquer sistema de formação, que Weber articulava aos tipos de dominação legitima (racional-legal, tradicional, carismática), seja política seja religiosa. Cada tipo de educação desenvolve nos alunos uma cultura, uma conduta de vida, ou ...

  9. Weber, Nietzsche e as respostas éticas à crítica da modernidade Weber, Nietzsche and the ethical answers to the critique of modernity

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    Renarde Freire Nobre

    2003-01-01

    Full Text Available O artigo consiste num estudo comparativo entre as concepções de cultura de Friedrich Nietzsche e Max Weber, suas análises críticas da modernidade e as respostas éticas que as acompanham. Apesar das importantes afinidades encontradas entre os autores, o artigo procura mostrar que o caráter principal da comparação entre os seus pensamentos é o do desencontro e da incompatibilidade.The article consistes in a comparative study between Friedrich Nietzsche's and Max Weber's conceptions of culture, their critical analyses of modernity and the ethical answers that follow from them. In spite of the important affinities between the two authors, the article tries to show that the main character of the comparison is that of the divergence and incompatibility.

  10. Religião, educação e economia em Max Weber = Religion, education and the economy in Max Weber

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    Carvalho Filho, Juarez Lopes de

    2014-01-01

    Full Text Available Este artigo propõe relacionar a religião, a educação e a economia em Max Weber. Apesar de não ter escrito uma obra específica sobre a educação, é possível verificar em escritos como Confucionismo e taoísmo um esboço de tipos ideais da educação encontrados em qualquer sistema de formação, que Weber articulava aos tipos de dominação legitima (racional-legal, tradicional, carismática, seja política seja religiosa. Cada tipo de educação desenvolve nos alunos uma cultura, uma conduta de vida, ou as qualidades que convêm a um tipo de dominação político-religiosa. Esses elementos dos tipos ideais de educação articulados a uma cultura religiosa exercem um papel importante na formação de sistemas econômicos, notadamente de uma cultura capitalista. Como Weber demonstrou na Ética protestante e o “espírito” do capitalismo, existe uma real adaptação, de uma educação religiosa (ascética ao capitalismo e à sua cultura

  11. Considerações sobre a ocorrência de Cactaceae na Apa de Maricá, Rio de Janeiro, Brasil

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    Cecilia Maria Rizzini

    1990-01-01

    Full Text Available São estudadas as especies da família Cactaceae que ocorrem na Restinga de Maricá, cuja flora se encontra ameaçada devido a diversas interferências que vêm alterando sua composição florística e vegetacional. São citadas 4 novas ocorrências para o local e observações de campo.The species of Cactaceae which occur at "Restinga de Maricá" were studied. These taxa are threatened by extinction, due two diverse interferences that are changing the floristic and vegetational composition of the area. Four new occurrences for the location are mentioned and field observations are given.

  12. On Legal Authority, Crisis of Legitimacy and Schooling in the Writings of Max Weber.

    Science.gov (United States)

    Lenhardt, Gero

    In an attempt to gain a better perspective on the relationship between education and the modern state, this paper reopens the theoretical debate on the key role of formal rationality in Max Weber's interpretation of the capitalist economy and the modern bureaucratic state. Against the background of an extensive review of the development and the…

  13. From Mill via von Kries to Max Weber: Causality, Explanation, and Understanding

    Science.gov (United States)

    Heidelberger, Michael

    In the second part of his "Critical studies in the logic of the cultural sciences" published in 1906, which carries the title "Objective possibility and adequate causation in historical explanation" (Weber 1906, 164-188/266-290)1 Max Weber (1864-1920) wrote that he feels "almost embarrassed in view of the extent to which here again, as in so much of the preceding argument, I am 'plundering' von Kries' ideas" (Weber 1906, 186/288).2 Weber thus admits a very strong influence on his approach by the physiologist, philosopher, and theoretician of probability, von Kries (1853-1928), who was for sometime his colleague in Freiburg in southwest Germany. Von Kries had suggested a legal criterion for attributing a deed to an agent that exerted a strong influence on German civil law and was also taken up by the legal system of other countries. This earned him the title of an honorary doctor of the law faculty of the University of Erlangen in 1897.

  14. Was Weber Wrong? A Human Capital Theory of Protestant Economic History. PEPG/07-04

    Science.gov (United States)

    Becker, Sascha O.; Wohmann, Ludger

    2007-01-01

    Max Weber attributed the higher economic prosperity of Protestant regions to a Protestant work ethic. We provide an alternative theory, where Protestant economies prospered because instruction in reading the Bible generated the human capital crucial to economic prosperity. County-level data from late 19th-century Prussia reveal that Protestantism…

  15. A note on dual integral equations involving inverse associated Weber-Orr transforms

    Directory of Open Access Journals (Sweden)

    Nanigopal Mandal

    1996-01-01

    Full Text Available We consider dual integral equations involving inverse associated Weber-Orr transforms. Elementary methods have been used to reduce dual integral equations to a Fredholm integral equation of second kind. Some known results are obtained as special case.

  16. Use of an electrosurgical scalpel in gingival overgrowth associated with Rendu-Osler-Weber syndrome.

    Science.gov (United States)

    Lozano, Francisco Javier Rodríguez; Pérez, A Sanchez; Villaescusa, M J Moya

    2008-11-01

    We present a case of gingival overgrowth, with aesthetic repercussions, associated with Rendu-Osler-Weber syndrome. Treatment consisted of electric gingivectomy. We noted that it is necessary to carefully monitor hemorrhaging during surgery as well as to provide a correct differential diagnosis to distinguish this syndrome from other illnesses that involve gingival growth.

  17. Wired by Weber - The story of the first searcher and searches for gravitational waves

    Science.gov (United States)

    Trimble, Virginia

    2017-02-01

    Joseph Weber started thinking about possibilities for detecting gravitational waves or radiation in about 1955. He designed, built, and operated the first detectors, from 1965 until his death in 2000. This paper includes discussions of his life, earlier work on chemical kinetics and what is now called quantum electronics, his published papers, pioneering work on gravitational waves, and its aftermath, both scientific and personal.

  18. Algorithmic and technical improvements: Optimal solutions to the (Generalized) Multi-Weber Problem

    NARCIS (Netherlands)

    K.E. Rosing (Kenneth); B. Harris (Britton)

    1992-01-01

    textabstractRosing has recently demonstrated a new method for obtaining optimal solutions to the (Generalized) Multi-Weber Problem and proved the optimality of the results. The method develops all convex hulls and then covers the destinations with disjoint convex hulls. This paper seeks to improve i

  19. Genealogie della legittimità. Città e Stato in Max Weber

    Directory of Open Access Journals (Sweden)

    Furio Ferraresi

    2014-05-01

    Full Text Available This essay explores the theme of the legitimacy of power in Weber from the standpoints of social science, historical investigation and political reflection. It investigates how Weber develops this theme in Kategorienaufsatz (1913, Soziologische Grundbegriffe (1920, Die Stadt (1911-14 and Politische Schriften (1917-19. Power, as a relationship of command/obedience, is founded on the representations of legitimacy of the individuals involved and on the Einverständnis (consent which is the condition of possibility of this relationship. It is back to the medieval city that Weber traces the genesis and interweaving of various forms of legitimation, which continue to exist as possibilities even within the modern State. The memory of medieval events re-emerges when Weber, after Germany’s defeat in the First World War and the threat of revolution that followed, tries to lay a foundation for the legitimacy of “leader democracy” by reintroducing the command/obedience relationship between leaders and masses.

  20. Moving the Weber fraction: the perceptual precision for moment of inertia increases with exploration force

    NARCIS (Netherlands)

    Debats, N.B.; Kingma, I.; Beek, P.J.; Smeets, J.B.J.

    2012-01-01

    How does the magnitude of the exploration force influence the precision of haptic perceptual estimates? To address this question, we examined the perceptual precision for moment of inertia (i.e., an object’s ‘‘angular mass’’) under different force conditions, using the Weber fraction to quantify per

  1. Síndrome de Klippel-Trenaunay-Parkes-Weber com angiomatose medular

    Directory of Open Access Journals (Sweden)

    James Pitagoras de Mattos

    1975-09-01

    Full Text Available É relatado um caso de síndrome de Klippel-Trénaunay-Parkes-Weber associada a angiomatose medular. O autor salienta ter encontrado na literatura somente uma referência com tal associação.

  2. Wired by Weber. The story of the first searcher and searches for gravitational waves

    Science.gov (United States)

    Trimble, Virginia

    2017-06-01

    Joseph Weber started thinking about possibilities for detecting gravitational waves or radiation in about 1955. He designed, built, and operated the first detectors, from 1965 until his death in 2000. This paper includes discussions of his life, earlier work on chemical kinetics and what is now called quantum electronics, his published papers, pioneering work on gravitational waves, and its aftermath, both scientific and personal.

  3. De Vries-Weber gain control and dark adaptation in human vision

    NARCIS (Netherlands)

    Bouman, M.A.

    2002-01-01

    Thresholds for seeing light from a stimulus are determined by a mechanism that pairs subliminal excitations from both halves of a twin unit. Such excitations stem from a package of k ≥ 1 receptor responses. A half-unit contains one red or one green cone and P rods. The receptor's "Weber machine" con

  4. Some preliminary notes on the Algae collection Weber-van Bosse

    NARCIS (Netherlands)

    Koster, Joséphine Th.

    1936-01-01

    This extensive collection, famous among algologists both of the Old and the New World, forms part of the collections of the National Herbarium (Rijksherbarium) Leiden since 1934. About fifty years ago it was started by Mrs. Dr. A. A. WEBER-VAN BOSSE (1852—hodie), an enthusiastic pupil of HUGO DE

  5. Rendu-Osler-Weber disease : update of medical and dental considerations

    NARCIS (Netherlands)

    Veldhuis, E. C. te; Veldhuis, A. H. te; van Dijk, F. S.; Kwee, M. L.; van Hagen, J. M.; Baart, J. A.; van der Waal, I.

    2008-01-01

    Rendu-Osler-Weber disease, also known as hereditary hemorrhagic telangiectasia (HHT), is an autosomal dominant inherited disorder characterized by an aberrant vascular development. The reported prevalence is approximately 1 per 5,000-10,000. The clinical manifestations consist of recurrent spontaneo

  6. Rendu-Osler-Weber disease: update of medical and dental considerations

    NARCIS (Netherlands)

    te Veldhuis, E.C.; te Veldhuis, A.H.; van Dijk, F.S.; Kwee, M.L.; van Hagen, J.M.; Baart, J.A.; van der Waal, I.

    2008-01-01

    Rendu-Osler-Weber disease, also known as hereditary hemorrhagic telangiectasia (HHT), is an autosomal dominant inherited disorder characterized by an aberrant vascular development. The reported prevalence is approximately 1 per 5,000-10,000. The clinical manifestations consist of recurrent spontaneo

  7. De Vries-Weber gain control and dark adaptation in human vision

    NARCIS (Netherlands)

    Bouman, M.A.

    2002-01-01

    Thresholds for seeing light from a stimulus are determined by a mechanism that pairs subliminal excitations from both halves of a twin unit. Such excitations stem from a package of k ≥ 1 receptor responses. A half-unit contains one red or one green cone and P rods. The receptor's "Weber machine" con

  8. Weber's Illusion and Body Shape: Anisotropy of Tactile Size Perception on the Hand

    Science.gov (United States)

    Longo, Matthew R.; Haggard, Patrick

    2011-01-01

    The perceived distance between touches on a single skin surface is larger on regions of high tactile sensitivity than those with lower acuity, an effect known as "Weber's illusion". This illusion suggests that tactile size perception involves a representation of the perceived size of body parts preserving characteristics of the somatosensory…

  9. Freud, Weber, Durkheim: A Philosophical Foundation for Writing in the Humanities and Social Sciences.

    Science.gov (United States)

    LeFevre, Karen B.; Larkin, T. J.

    1983-01-01

    Proposes a continuum of lines of inquiry applicable to many of the human sciences. Illustrates the continuum by discussing the approaches of Sigmund Freud, Max Weber, and Emile Durkheim. Suggests uses of the continuum as an aid to invention and as a method of analysis. (RAE)

  10. From Weber to Parsons and Shutz: The Eclipse of History in Modern Social Theory.

    Science.gov (United States)

    Zaret, David

    1980-01-01

    Compares the relationship between theoretical synthesis and historical research in light of research by Max Weber, Talcott Parsons, and Alfred Schutz. Traces theoretical developments within one subfield of sociology (action theory) and relates these developments to research problems confronting contemporary theoretical work in sociology. (DB)

  11. Sturge-Weber syndrome in association with Klippel-Trenaunay syndrome and phakomatosis pigmentovascularis type IIb

    Directory of Open Access Journals (Sweden)

    Rajesh Kumar Mandal

    2014-01-01

    Full Text Available Phakomatosis pigmentovascularis (PPV is a rare combination of pigmentary and vascular components with or without systemic involvement. We report here a rare association of Sturge-Weber syndrome, Klippel-Trenaunay syndrome, and PPV type IIb in a 15-year-old boy who had right upper limb monoparesis along with a history of recurrent convulsions.

  12. Os sentidos de compreensão nas teorias de Weber e Habermas

    Directory of Open Access Journals (Sweden)

    José Geraldo A. B. Poker

    2013-01-01

    Full Text Available Partindo do pressuposto de que a teoria social elaborada por Habermas em muito se assemelha àquela construída por M. Weber, procedeu-se a um estudo comparativo com a intenção de identificar as formas pelas quais Weber e Habermas elaboraram o conceito de compreensão, ao mesmo tempo em que e o elegeram, cada um a seu modo, como instrumento metodológico adequado às dificuldades da produção de conhecimento científico nas Ciências Sociais. Tanto para Weber, como para Habermas, o conhecimento nas Ciências Sociais não consegue escapar das influências diretas da subjetividade do cientista, como também não é capaz de se proteger das contingências histórico-culturais aos quais inevitavelmente toda ação humana está vinculada. Por isso, fundamentados em suas próprias razões, tanto Weber quanto Habermas apontam a compreensão como a forma possível de conhecimento, o que implica a renúncia às pretensões explicativas e à produção de teorias gerais de fundamentação última, que são típicas das ciências convencionais.

  13. 75 FR 3955 - Environmental Impact Statement: Davis and Weber Counties, UT

    Science.gov (United States)

    2010-01-25

    ... Federal Highway Administration Environmental Impact Statement: Davis and Weber Counties, UT AGENCY... West 4700 South, Suite 9A, Salt Lake City, UT 84118, Telephone: (801) 963-0182, E-mail: Edward.Woolford... Randy Jefferies, Project Manager, 166 Southwell Street, Ogden, UT 84404, Telephone: (801) 620-1690,...

  14. From Weber to Parsons and Shutz: The Eclipse of History in Modern Social Theory.

    Science.gov (United States)

    Zaret, David

    1980-01-01

    Compares the relationship between theoretical synthesis and historical research in light of research by Max Weber, Talcott Parsons, and Alfred Schutz. Traces theoretical developments within one subfield of sociology (action theory) and relates these developments to research problems confronting contemporary theoretical work in sociology. (DB)

  15. An Analytical Solution To A Special Case Of The Weber-Schafheitlin Integral

    CERN Document Server

    Mehrem, R

    2012-01-01

    The Weber-Schafheitlin type integral $\\threej{\\Llo}{\\Llt}{\\Llth}{0}{0}{0}\\,\\int_0^\\infty \\,{j_\\Llo(k_1r)\\,j_\\Llt(k_2r)\\over r^\\Llth}\\,dr$ is evaluated analytically. The result is a finite sum over $k_$, where $k_$) is the smaller (larger) of $k_1$ and $k_2$.

  16. Max Weber: o processo de racionalização e o desencantamento do trabalho nas organizações contemporâneas Max Weber: rationalization process and the disenchantment of work in contemporary organizations

    Directory of Open Access Journals (Sweden)

    Hermano Roberto Thiry-Cherques

    2009-08-01

    Full Text Available Este artigo indica algumas implicações do pensamento weberiano sobre a compreensão do trabalho e da forma de administrá-lo. Com base nos conceitos weberianos de racionalidade e de racionalização, é feita uma apreciação do trabalho na história ocidental, com ênfase no momento da passagem do capitalismo tradicional para o contemporâneo. A tese central é a de que as teorias de Weber são um modo válido para compreender o trabalho desencantado da atualidade.This article discusses some implications of Weber's thoughts about understanding and managing labor. Based on Weber's concepts of rationality and rationalization, the article develops an account of the transformations of labor in Western history, stressing the shift from early to contemporary capitalism. The central thesis is that Weber's theories are a well grounded way to explain today's disenchanted work.

  17. EL Agave tequilana Weber Y LA PRODUCCIÓN DE TEQUILA EL Agave tequilana Weber Y LA PRODUCCIÓN DE TEQUILA

    OpenAIRE

    Barboza Corona, J.E.; L. García- Oropeza; M. Bautista-Justo; L. A. Parra-Negrete

    2012-01-01

    Tequila is one of the most famous drinks on a national and worldwide level. It is obtained from the Agave tequilana Weber plant, better known as Agave Azul. The part of the plant used for making tequila is the core. Once the cores are cut, they are taken away to an oven where a cooking operation is made, this with the object of degrading the complex sugars of the core into simple sugars that can be used as yeasts in the fermentation process. The principal complex carbohydrate present in agave...

  18. THE WEBER THESIS OF CALVINISM AND CAPITALISM--ITS VARIOUS VERSIONS AND THEIR "FATE" IN SOCIAL SCIENCE.

    Science.gov (United States)

    Zafirovski, Milan

    2016-01-01

    The paper identifies and examines various multiple renditions of the so-called Weber Thesis of an historical association and convergence between ascetic Protestantism, above all Calvinism, and the emergence and development of modern capitalism as an economic spirit and system. Specifically, it detects at least four different versions and formulations or interpretations, thus casting doubt in the common view of the Weber Thesis as a single and monolithic theory or hypothesis. The paper also considers the status of the multiple versions of the Weber Thesis in post-Weberian and contemporary sociology and related disciplines like economics and history. It concludes that the weaker, relaxed renditions of the Weber Thesis have attained a greater success and more endured in contemporary social science than have its stronger, stricter versions. © 2015 Wiley Periodicals, Inc.

  19. Invocación de Max Weber al Soneto 102 de Shakespeare

    Directory of Open Access Journals (Sweden)

    Luis R. Oro Tapia

    2007-06-01

    Full Text Available The purpose of this article is to identify and explain the ideas underlying the images that Max Weber uses to make up his concept of political vocation. When he intends to outline such notion in the last lines of his conference “Politk als Beruf ”, he does it by using a highly aesthetic and cryptic language. This article takes this peculiarity into account and it tries, as far as possible, to turn the metaphors into concepts with the practical purpose of helping the reader to unravel the message that Weber wanted to transmit to his interlocutors. If this essay reaches its objective, it will be at the cost of tarnishing the plasticity of the images used by the German sociologist to point out his ideological platform.

  20. Optimization study of fructans extraction from Agave tequilana Weber azul variety

    Directory of Open Access Journals (Sweden)

    Jesús Aarón SALAZAR-LEYVA

    Full Text Available Abstract Agave tequilana Weber azul variety is a valuable source of fructans. In this study, a response surface methodology was employed to optimize the extraction yield of fructans from agave pines. A Box Behnken factorial design was applied to evaluate the effects of several conditions such as extraction temperature, water raw material ratio and extraction time on extraction yield. Under the optimum extraction conditions (extraction temperature of 79.1 °C, water raw material ratio of 5.13 mL/g, and extraction time of 1.48 h fructans extraction yield was 83.12%. The chromatographic profile of the agave crude extract presented four peaks, out of which fructans were the most preponderant (~87%. The obtained results suggest that the response surface methodology is adequate to optimize fructans extraction from Agave tequilana Weber azul variety.

  1. The Rendu-Osler-Weber Disease Revealed by a Refractory Hypoxemia and Severe Cerebral Fat Embolism

    Directory of Open Access Journals (Sweden)

    Leonel Barreto

    2013-01-01

    Full Text Available The Rendu-Osler-Weber disease is a genetic disease which may lead to severe hemorrhage and less frequently to severe organ dysfunction. We report the case of a 22-year-old patient with no personal medical history who was involved in a motorcycle accident and exhibited severe complications related to large arteriovenous pulmonary shunts during his ICU stay. The patient developed an unexplained severe hypoxemia which was attributed to several arteriovenous shunts of the pulmonary vasculature by a contrast study during a transesophageal echocardiographic examination. The course was subsequently complicated by a prolonged coma associated with hemiplegia which was attributed to a massive paradoxical fat embolism in the setting of an untreated femoral fracture. In addition to hemorrhagic complications which may lead to intractable shock, arteriovenous malformations associated with the Rendu-Osler-Weber disease may involve the pulmonary vasculature and result in unexpected complications, such as hypoxemia or severe cerebral fat embolism in high-risk patients.

  2. Max Weber, la borsa e la ‘crisi del credito’ del 2008

    Directory of Open Access Journals (Sweden)

    Carlo Rossetti

    2011-02-01

    Full Text Available A partire da una rilettura di opere, come Die Protestantische Ethik und der Geist der Kapitalismus e Die Boersenequete, l'articolo mostra che – in linea con quanto Max Weber aveva descritto – l'assenza di regole generali condivise e di controlli pubblici mette in crisi le fondamenta del sistema finanziario. La privatizzazione neoliberista degli organi di controllo della finanza e la creazione di oscuri strumenti finanziari hanno contribuito alla regressione dell'organizzazione giuridica dello Stato, mettendo a serio rischio il principio di calcolabilità razionale che per secoli ha costituito il fondamento della teoria economica. In conclusione, Weber contribuisce a cogliere uno dei nodi fondamentali della crisi americana contemporanea: l'erosione dell’autorità indipendente posta a tutela dell’integrità del sistema.

  3. Anaesthesia for caesarean section in a patient with Sturge-Weber syndrome following acute neurological deterioration.

    LENUS (Irish Health Repository)

    Tadrous, R

    2012-02-01

    Sturge-Weber syndrome consists of facial capillary malformation (port-wine stain) and abnormal blood vessels in the brain or eye. Seizures, developmental delay and intracranial and airway angiomata are principal concerns. We report a 28-year-old primiparous woman at 41 weeks of gestation with Sturge-Weber syndrome who developed unilateral weakness, aphasia, blurred vision and confusion. Preeclampsia was excluded. Neuroimaging showed left sided cerebral oedema and a right parieto-occipital lesion, most likely an angioma. Caesarean section was planned to avoid the risk of angioma rupture during labour. General anesthesia was avoided due to the haemodynamic response to laryngoscopy and reports of seizure-related mortality. Despite the possibility of raised intracranial pressure and precipitation of cerebral herniation, a lumbar epidural block was administered but failed. A subarachnoid block was successfully performed and a healthy infant delivered. The choice of anaesthesia was strongly influenced by detailed radiological investigations and multidisciplinary participation.

  4. Anaesthesia for caesarean section in a patient with Sturge-Weber syndrome following acute neurological deterioration.

    LENUS (Irish Health Repository)

    Tadrous, R

    2011-07-01

    Sturge-Weber syndrome consists of facial capillary malformation (port-wine stain) and abnormal blood vessels in the brain or eye. Seizures, developmental delay and intracranial and airway angiomata are principal concerns. We report a 28-year-old primiparous woman at 41 weeks of gestation with Sturge-Weber syndrome who developed unilateral weakness, aphasia, blurred vision and confusion. Preeclampsia was excluded. Neuroimaging showed left sided cerebral oedema and a right parieto-occipital lesion, most likely an angioma. Caesarean section was planned to avoid the risk of angioma rupture during labour. General anesthesia was avoided due to the haemodynamic response to laryngoscopy and reports of seizure-related mortality. Despite the possibility of raised intracranial pressure and precipitation of cerebral herniation, a lumbar epidural block was administered but failed. A subarachnoid block was successfully performed and a healthy infant delivered. The choice of anaesthesia was strongly influenced by detailed radiological investigations and multidisciplinary participation.

  5. El nuevo ideal del matrimonio en la autobiografía de Marianne Weber

    Directory of Open Access Journals (Sweden)

    Montserrat Bascoy Lamelas

    2012-11-01

    Full Text Available La socióloga Marianne Weber fue una de las teóricas más importantes del feminismo burgués en Alemania. Uno de los temas que le preocuparon especialmente fue la revisión del concepto de matrimonio, ante los cambios sociales en torno a 1900. A pesar de las nuevas necesidades de la mujer en este momento de transformaciones que conduce a los movimientos por la emancipación femenina y al rechazo generalizado del matrimonio, Marianne Weber, impulsada también por sus propias experiencias vitales, afirma la relevancia y la necesidad del mismo como ideal de las relaciones sexuales, y lo define nuevamente.

  6. Harm A. Weber academic center, post-occupancy building performance and comfort perceptions

    OpenAIRE

    Keelan P. Kaiser; David M. Ogoli; Malcolm Cook

    2012-01-01

    The Weber Center at Judson University, a mixed mode, naturally ventilated building in a continental climate, has been in operation for just over a year, with initial occupancy in August 2007. This paper compares the design objectives and building performance expectations against the first yearof actual energy consumption in a first of a series of post-occupancy evaluations. The paper contrasts the building performance with general user satisfaction and perceptions of comfort through a post oc...

  7. Anaesthetic Management of Cataract Surgery in a Patient with Sturge-Weber Syndrome

    Directory of Open Access Journals (Sweden)

    Vasantha Kumar

    2015-05-01

    Full Text Available Sturge-Weber Syndrome (SWS, also called as encephalo trigeminal angiomatosis, is a rare congenital syndrome, characterized by lepto meningeal haemangioma, a facial port-wine stains distributed over the trigeminal nerve area, (usually involving one side and glaucoma. During cataract surgery, there may be rupture of choroid haemangioma, leading to excessive bleeding, or of haemangioma involving the airway, leading to difficult mask ventilation, laryngoscopy and intubation. We discuss the anaesthetic management of the patient with SWS for cataract surgery.

  8. Generalization of Weber's adiabatic bond charge model to amorphous group IV semiconductors

    Science.gov (United States)

    Winer, K.; Wooten, F.

    1984-11-01

    The generalization of Weber's adiabatic bond charge model to amorphous group IV semiconductors is described. Methods of relaxing the coordinates to their equilibrium configuration and of calculating the dynamical matrix for the phonon spectra are given. Particular emphasis is given to the optimization of the Coulomb subroutines required in this model. Estimates of computation time are included for the calculation of equilibrium configuration on a Cray computer.

  9. Weber B Distal Fibular Fracture Diagnosed by Point of Care Ultrasound in the Emergency Department

    OpenAIRE

    Makinen, James

    2016-01-01

    We report the case of a 45 year-old woman who presented to the Emergency Department (ED) after an acute ankle inversion injury. After history and physical exam suggested a potential fracture, point of care (POC) ultrasound demonstrated a cortical defect of the distal fibula, consistent with fracture. Plain radiography failed to demonstrate a fracture. Later, the fracture was identified as a Weber B distal fibular fracture by stress-view radiography. This case reviews the evaluation of acute a...

  10. A pilot study of the modified Atkins diet for Sturge-Weber syndrome.

    Science.gov (United States)

    Kossoff, Eric H; Borsage, Jennifer L; Comi, Anne M

    2010-12-01

    The modified Atkins diet (MAD) is a dietary treatment for epilepsy which does not restrict fluids or calories. This theoretically makes the MAD safer than the ketogenic diet for children with Sturge-Weber syndrome (SWS). Five children aged 4-18 years with SWS and at least monthly intractable seizures were started prospectively on the MAD for 6 months. All children had urinary ketosis and seizure improvement, including 3 with > 50% seizure reduction.

  11. Klippel-trenaunay-weber syndrome with hemimegalencephaly; report of a pediatric case.

    Science.gov (United States)

    Esmailzadeh, Hossein; Tavassoli, Azita; Jahangiri N, Younes; Vatankhah, Nasibeh

    2012-03-01

    Klippel-Trenaunay-Weber Syndrome (KTWS) is a rare neurocutaneous syndrome. Hemimegalencephaly (HME) and seizure episodes have been reported previously in a few cases with KTWS. We report here a 3 day-old girl with partial motor seizures, extensive port-wine staining and mild structural deformities in the feet, and a hemimegalencephaly. Occurrence of partial motor seizures in addition to bilateral lower extremities extensive port-wine staining is a unique feature seen in our case.

  12. THE TWO CONCEPTS OF PATRIMONIALISM IN MAX WEBER: FROM THE DOMESTIC MODEL TO THE ORGANIZATIONAL MODEL

    National Research Council Canada - National Science Library

    Carlos Eduardo Sell

    2017-01-01

    ...: the domestic model and the organizational model. From a systematic point of view, these models will be detailed in their theoretical nature (ideal-type) and as comparative instruments of socio-empirical analysis. In the conclusion, and in affinity with Weber's models, two ideal-typical conceptions of patrimonialism present in the Brazilian debate are characterized: the socio-patriarchal and the institutional-liberal conceptions.

  13. Absceso intramedular en paciente con enfermedad de Rendu-Osler-Weber Spinal abscess in a patient with hereditary hemorrhagic telangiectasia

    Directory of Open Access Journals (Sweden)

    Lorena V Maldonado

    2007-12-01

    Full Text Available La enfermedad de Rendu-Osler-Weber es una enfermedad autosómica dominante que se manifiesta por telangiectasias en piel y mucosas y malformaciones arteriovenosas en diversos órganos. El compromiso neurológico puede ocurrir por la presencia de malformaciones arterio-venosas cerebrales, hemorragia intracraneal, y más habitualmente por accidentes cerebrovasculares isquémicos y abscesos cerebrales secundarios a embolia paradojal, en pacientes con malformaciones arteriovenosas pulmonares. El absceso intramedular es una entidad rara, inusual como complicación de la enfermedad de Rendu-Osler-Weber. Presentamos el caso de una mujer de 56 años de edad, con antecedentes familiares de enfermedad de Rendu-Osler- Weber, que ingresó a Terapia Intensiva con cuadriplejia aguda e hipoxemia, en quien se diagnosticó fístulas arteriovenosas pulmonares y un absceso intramedular cervical.Rendu-Osler-Weber syndrome is an autosomal dominant disorder characterized by multiple skin and mucosal telangiectasis and multiorgan arteriovenous malformations. Neurological manifestations may occur because of cerebral arteriovenous malformations, intracranial hemorrhage, and most commonly by ischemic stroke and brain abscess secondary to paradoxical embolization in patients with pulmonary arteriovenous malformations. Intramedullary abscess is a rare, unusual condition, in Rendu-Osler-Weber syndrome. We report the case of a 56 years old woman, with a familial history of Rendu-Osler-Weber syndrome, admitted to intensive care with acute quadriplegia and hypoxemia. Our diagnosis was pulmonary arteriovenous malformations and intramedullary abscess.

  14. Depth and Surface. Max Weber, Leo Strauss, and the Practical Nature of Political Philosophy.

    Directory of Open Access Journals (Sweden)

    Luciano Nosetto

    2015-12-01

    Full Text Available According to Leo Strauss, Max Weber has been the most salient proponent of modern social science, that is to say, of a value-free social science. The second chapter of Strauss’ Natural Right and History consists of a critical overview of Max Weber’s perspective and, in particular, of his attempt to build the modern social science edifice upon the ground of the distinction between facts and values. The work here delivered consists of a comment or close reading of the chapter of Strauss on Weber. The aim of this reading is to show how the Weberian distinction between facts and values dilutes the most basic skills of the man of science, leading towards a nihilistic social philosophy, and towards an absurd social science. At the same time, Strauss’ reading examines the Weberian diagnosis of modern civilization, by means of an analysis of the sociological and political figures of the specialist, the philistine, and the extremist. After an account of Strauss’ critic of Weber, this article considers the Straussian proposal of a return to political philosophy in its classical sense.

  15. Max Weber e a corrente neoweberiana na sociologia das profissões

    Directory of Open Access Journals (Sweden)

    Aldo Antonio Schmitz

    2014-07-01

    Full Text Available http://dx.doi.org/10.5007/1806-5023.2014v11n1p10   O ensaio trata da sociologia das profissões na obra de Max Weber, vinculada aos estudos da corrente neoweberiana, em especial dos sociólogos Eliot Freidson e Magali Larson. Justifica-se pelas potenciais contribuições ao suporte teórico para a compreensão do mundo do trabalho, visto que em Weber as profissões, o profissionalismo e a profissionalização são temas de suas abordagens no processo de racionalização e que os neoweberianos revisam e validam os estudos e a metodologia sociológica weberiana. O objetivo deste trabalho é verificar como as suas análises teóricas, empíricas e críticas concorrem para a sociologia das profissões. Porquanto, realizamos uma pesquisa exploratória para garimpar referências e concepções, capazes de formar um prontuário básico de estudo das profissões e da profissionalização, apoiado em Weber e na corrente neoweberiana.

  16. [Thought Experiments in Historiographic Function: Max Weber on Eduard Meyer and the Question of Counterfactuality].

    Science.gov (United States)

    Ernst, Florian

    2015-03-01

    Thought Experiments in Historiographic Function: Max Weber on Eduard Meyer and the Question of Counterfactuality. Max Weber's remarks on his colleague Eduard Meyer regarding counterfactual reasoning in history reflects a significant shift during the Methodenstreit around 1900. The question of attributing historical change strictly to either individual causes or abstract general laws has been tackled in a new way: By counterfactual reasoning a historian should be able to detect the most significant (and therefore meaningful) cause, event, or action for a certain historical outcome. Following Fritz Ringer, this paper argues that given the predominating methods of the natural sciences, scholars of the humanities conducted historical research by counterfactual thought experiments. This way, Weber pried open contemporary narratives (e.g. historicism), and by employing a unique historical causal analysis he made way for refined concepts to offer a model of interpretation that gave hope for a more feasible, practice-oriented approach to historical research than the epistemological discussions had hitherto offered. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  17. MR findings of sturge-weber syndrome: empahasis on vascular abnormality

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    Baek, Ho Kil; No, Tae Yon; Won, Jong Bu; Baik, Seung Kuk; Shin, Mi Jeong; Kim, Bong Ki; Choi, Han Yong [Wallace Memorial Baptist Hospital, Pusan (Korea, Republic of)

    1997-09-01

    To observe MR findings of vascular abnormality in Sturge-Weber syndrome and to determine the value of MRI in diagnosis. Ten patients with Sturge-Weber syndrome (age:3 months-32 years) were evaluated by MR imaging; in six and four cases, respectively, the results were correlated with those of CT and angiography. We retrospectively analysed changes in the cortical vein and deep venous system, including the medullary and subependymal vein, as well as enlargement of the choroid plexus, leptomeningeal enhancement, and changes in diploic space. In all cases except one, in which non-contrast enhanced study had been per formed, varying degrees of leptomeningeal enhancement were seen. In nine cases the cortical vein became smaller;enlargement of the choroid plexus was seen in eight cases, change in the diploic space in seven (including three in which there was angiomatous involvement), and enlargement of the deep venous system in seven. In younger patients, collateral pathways were less developed and leptomeningeal angiomatous changes were more pronounced than in those who were older. MRI is a useful modality for the evaluationn of vascular changes in Sturge-Weber syndrome. These changes vary according to a patient's age and the duration of the disease.

  18. Focal inhibitory seizure with prolonged deficit in adult Sturge-Weber syndrome.

    Science.gov (United States)

    Aupy, Jerome; Bonnet, Charlotte; Arnould, Jean-Simon; Fernandez, Philippe; Marchal, Cecile; Zanotti-Fregonara, Paolo

    2015-09-01

    Sturge-Weber syndrome is a sporadic congenital neurocutaneous disorder often related to varying degrees of motor impairment. The phenomenon of prolonged ictal paresis is a rare seizure sign that can be due to lesions affecting the centro-parietal lobe. Focal inhibitory motor seizures can be difficult to differentiate from other clinical entities such as stroke, migraine or postictal paresis. We describe the case of a 40-year-old patient suffering from Sturge-Weber syndrome, admitted due to prolonged right-sided hemiparesis following a usual seizure. Repeated EEGs during the prolonged deficit showed only intermittent left fronto-parietal sharp waves. (99m)Tc HMPAO-brain SPECT performed seven days after the last seizure showed a vast area of parieto-occipital hyperperfusion in the left hemisphere. Aggressive antiepileptic therapy dramatically improved the clinical symptoms and scintigraphic images, which corroborated the diagnosis of ictal paresis. This case highlights the role of SPECT in the evaluation of Sturge-Weber syndrome, not only to investigate progressive neurological deterioration, but also exacerbation of seizures or prolonged neurological deficits. In fact, it may be possible to document ongoing epileptic activity using SPECT, despite a non-contributory EEG, which may be of help in adapting a therapeutic strategy.

  19. Relevance of the Weber effect in contemporary pharmacovigilance of oncology drugs

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    Arora A

    2017-09-01

    Full Text Available Ankur Arora,1,2 Rajinder K Jalali,1,2 Divya Vohora1 1School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India; 2Medical Affairs and Clinical Research, Sun Pharmaceutical Industries Limited, Gurgaon, Haryana, India Background: Numerous reporting biases have been known to affect spontaneous reporting databases. The Weber effect, which constitutes a peak in adverse event (AE reporting of a drug at the end of second year after regulatory approval followed by a continuous decline thereafter, has been considered an important bias for a long time. The existence of this bias in AE reporting of oncology drugs remains an underevaluated area, prompting a targeted examination.Methods: The US Food and Drug Administration (USFDA Adverse Event Reporting System (FAERS was studied for AE reporting patterns of 5 years of 15 new molecular entities (NMEs and biologics used in oncology. This 5-year period started from the USFDA date of approval for the NMEs and biologics. The number of AEs reported for each of the drugs was plotted against time (years. The AE reporting patterns were specifically examined for the existence of the Weber effect. In addition, AE reporting rate patterns of 5 years of seven NMEs and biologics used in oncology were examined.Results: A total of 50,630 AE reports were logged in to the FAERS for all 15 drugs examined for AE reporting patterns. We observed five distinct AE reporting patterns for 15 drugs; however, none of the AE patterns were identical to the Weber effect. We did not observe a consistent AE reporting rate pattern for the seven drugs examined for AE reporting rates. With the exception of one drug (cetuximab, none of the drugs exhibited a second-year peak in AE reporting rates. This peak was not followed by continuous decline in AE reporting rate thereafter.Conclusion: This study does not support the existence of the Weber effect in AE reporting of oncology drugs. The contemporary AE reporting of oncology

  20. Methanolic extract of Pereskia bleo (Kunth) DC. (Cactaceae) induces apoptosis in breast carcinoma, T47-D cell line.

    Science.gov (United States)

    Tan, M L; Sulaiman, S F; Najimuddin, N; Samian, M R; Muhammad, T S Tengku

    2005-01-04

    Currently, breast cancer is the leading cause of cancer-related death in women. Therefore, there is an urgent need to develop alternative therapeutic measures against this deadly disease. Here, we report the cytotoxicity activity and the mechanism of cell death exhibited by the methanol extract prepared from Pereskia bleo (Kunth) DC. (Cactaceae) plant against human breast carcinoma cell line, T-47D. In vitro cytotoxicity screening of methanol extract of Pereskia bleo plant indicated the presence of cytotoxicity activity of the extract against T-47D cells with EC50 of 2.0 microg/ml. T-47D cell death elicited by the extract was found to be apoptotic in nature based a clear indication of DNA fragmentation which is a hallmark of apoptosis. In addition, ultrastructural analysis also revealed apoptotic characteristics (the presence of chromatin margination and apoptotic bodies) in the extract-treated cells. RT-PCR analysis showed the mRNA expression levels of c-myc, and caspase 3 were markedly increased in the cells treated with the plant extract. However, p53 expression was only slightly increased as compared to caspase 3 and c-myc. Thus, the results from this study strongly suggest that the methanol extract of Pereskia bleo may contain bioactive compound(s) that caused breast carcinoma, T-47D cell death by apoptosis mechanism via the activation of caspase-3 and c-myc pathways.

  1. Apical meristem organization and lack of establishment of the quiescent center in Cactaceae roots with determinate growth.

    Science.gov (United States)

    Rodríguez-Rodríguez, José Fernando; Shishkova, Svetlana; Napsucialy-Mendivil, Selene; Dubrovsky, Joseph G

    2003-10-01

    Some species of Cactaceae from the Sonoran Desert are characterized by a determinate growth pattern of the primary root, which is important for rapid lateral-root formation and seedling establishment. An analysis of the determinate root growth can be helpful for understanding the mechanism of meristem maintenance in plants in general. Stenocereus gummosus (Engelm.) Gibson & Horak and Pachycereus pringlei (S. Watson) Britton & Rose are characterized by an open type of root apical meristem. Immunohistochemical analysis of 5-bromo-2'-deoxyuridine incorporation into S. gummosus showed that the percentage of cells passing through the S-phase in a 24-h period is the same within the zone where a population of relatively slowly proliferating cells could be established and above this zone in the meristem. This indicated the absence of the quiescent center (QC) in S. gummosus. During the second and the third days of growth, in the distal meristem portion of P. pringlei roots, a compact group of cells that had a cell cycle longer than in the proximal meristem was found, indicating the presence of the QC. However, later in development, the QC could not be detected in this species. These data suggest that during post-germination the absence of the establishment of the QC within the apical meristem and limited proliferative activity of initial cells are the main components of a determinate developmental program and that establishment of the QC is required for maintenance of the meristem and indeterminate root growth in plants.

  2. A mass collection of Triatoma ryckmani (Hemiptera: Reduviidae) from Stenocereus Eichlamii (Cactaceae) in the semiarid region of Guatemala.

    Science.gov (United States)

    Marroquín, Ricardo; Bor, Silvia; Monroy, M Carlota

    2004-12-01

    A population of 216 specimens of Stenocereus eichlamii (Cactaceae, Subfamily Cereoideae) was surveyed for Triatoma ryckmani (vector of Chagas disease) in a one hectare plot of semiarid habitat in Guatemala. Out of 44 plants that had dead and dry sections, 24 plants had a total of 103 specimens of T. ryckmani. In comparison with other areas of Guatemala, T ryckmani is well established in the semiarid ecosystem (Infestation index 54.5, density = 2.3 and crowding index 4.3). The insects were mainly found (52.4%) in the dead portions of S. eichlamii 2.0 to 3.2 m above the ground (X2 = 26.0, P < 0.00001), followed by dry cactus sections between 3.2 and 5.0 m (35.9%). They were less frequent 0.2 to 2.0 m above the ground. A considerable proportion (75.7%) had no aparent blood in their digestive systems. To determine the presence of flagellates, 43 of the bugs were dissected, but none were found. This is the first report on T. ryckmani population dynamics in this habitat.

  3. Populational characterization of Melocactus zehntneri (Britton & Rose Luetzelburg (Cactaceae present in an inselberg of the Paraiban Caatinga

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    Juliano Ricardo Fabricante

    2010-03-01

    Full Text Available Inselbergs are rocky outcrops that are characterized by the fact that they form isolated ecosystems with a high degree of endemism. However, these environments remain little studied. The present work aimed to characterize a population of Melocactus zehntneri (Britton & Rose Luetzelburg (Cactaceae occurring on an inselberg in the municipal district of Pocinhos, PB. Over the whole extension of the inselberg, 50 plots of 1m² were allocated. The sampled individuals were classified according to ontogenetic stadium, evaluating the number of individuals, the height, the diameter in the central section, and the number of dead. To evaluate the pattern of space distribution of the species, the Index of Dispersion of Morisita (Id was calculated, and to verify the influence of one ontogenetic stadium on another, the coefficient of linear correlation was applied (ρ. A total of 869 individuals were sampled, of which 635 were young and 234 were adults. The value of Id was 1.28, indicating that the population distribution was clumped. The value of ρ = -0.3872 demonstrated a negative linear correlation among the ontogenetic stadiums. The accumulation of rocky sediment on some points of the inselberg certainly favored the distribution of the species on it. The population demonstrated stability, with a great number of stock individuals.

  4. Novel seed coat lignins in the Cactaceae: structure, distribution and implications for the evolution of lignin diversity.

    Science.gov (United States)

    Chen, Fang; Tobimatsu, Yuki; Jackson, Lisa; Nakashima, Jin; Ralph, John; Dixon, Richard A

    2013-01-01

    We have recently described a hitherto unsuspected catechyl lignin polymer (C-lignin) in the seed coats of Vanilla orchid and in cacti of one genus, Melocactus (Chen et al., Proc. Natl. Acad. Sci. USA. 2012, 109, 1772-1777.). We have now determined the lignin types in the seed coats of 130 different cactus species. Lignin in the vegetative tissues of cacti is of the normal guaiacyl/syringyl (G/S) type, but members of most genera within the subfamily Cactoidae possess seed coat lignin of the novel C-type only, which we show is a homopolymer formed by endwise β-O-4-coupling of caffeyl alcohol monomers onto the growing polymer resulting in benzodioxane units. However, the species examined within the genera Coryphantha, Cumarinia, Escobaria and Mammillaria (Cactoideae) mostly had normal G/S lignin in their seeds, as did all six species in the subfamily Opuntioidae that were examined. Seed coat lignin composition is still evolving in the Cactaceae, as seeds of one Mammillaria species (M. lasiacantha) possess only C-lignin, three Escobaria species (E. dasyacantha, E. lloydii and E. zilziana) contain an unusual lignin composed of 5-hydroxyguaiacyl units, the first report of such a polymer that occurs naturally in plants, and seeds of some species contain no lignin at all. We discuss the implications of these findings for the mechanisms that underlie the biosynthesis of these newly discovered lignin types.

  5. Pollination and seed dispersal of Melocactus ernestii Vaupel subsp. ernestii (Cactaceae) by lizards: an example of double mutualism.

    Science.gov (United States)

    Gomes, V G N; Quirino, Z G M; Machado, I C

    2014-03-01

    Recent studies show that the mutualistic role of lizards as pollinators and seed dispersers has been underestimated, with several ecological factors promoting such plant-animal interactions, especially on oceanic islands. Our aim is to provide a quantitative assessment of pollination and seed dispersal mutualisms with lizards in continental xeric habitats. We carried out focal observations of natural populations of Melocactus ernestii (Cactaceae) in the Caatinga, a Brazilian semiarid ecosystem, in order to record the frequency of visits, kind of resource searched and behaviour of visiting animals towards flowers and/or fruits. We made a new record of the lizard Tropidurus semitaeniatus foraging on flowers and fruits of M. ernestii. During the search for nectar, T. semitaeniatus contacted the reproductive structures of the flowers and transported pollen attached to its snout. Nectar production started at 14:00 h, with an average volume of 24.4 μl and an average concentration of solutes of 33%. Approximately 80% of the seeds of M. ernestii found in the faeces of T. semitaeniatus germinated under natural conditions. The roles of T. semitaeniatus as pollinator and seed disperser for M. ernestii show a clear relationship of double mutualism between two endemic species, which may result from the environmental conditions to which both species are subject. Seasonality, low water availability and arthropod supply in the environment, high local lizard densities, continuous nectar production by the flower and fruits with juicy pulp may be influencing the visits and, consequently, pollination and seed dispersal by lizards in this cactus.

  6. Seed reserve composition and mobilization during germination and early seedling establishment of Cereus jamacaru D.C. ssp. jamacaru (Cactaceae).

    Science.gov (United States)

    Alencar, Nara L M; Innecco, Renato; Gomes-Filho, Enéas; Gallão, Maria Izabel; Alvarez-Pizarro, Juan C; Prisco, José T; Oliveira, Alexandre B De

    2012-09-01

    Cereus jamacaru, a Cactaceae found throughout northeast Brazil, is widely used as cattle food and as an ornamental and medicinal plant. However, there has been little information about the physiological and biochemical aspects involved in its germination. The aim of this study was to investigate its reserve mobilization during germination and early seedling growth. For this, C. jamacaru seeds were germinated in a growth chamber and collected at 0, 2, 4, 5, 6, 8 and 12 days after imbibition for morphological and biochemical analyses. Dry seeds had wrinkled seed coats and large, curved embryos. Lipids were the most abundant reserve, comprising approximately 55% and 65% of the dry mass for cotyledons and the hypocotylradicle axis, respectively. Soluble sugars and starch were the minor reserves, corresponding to approximately 2.2% of the cotyledons' dry mass, although their levels showed significant changes during germination. Soluble proteins corresponded to 40% of the cotyledons' dry mass, which was reduced by 81% at the final period of germination compared to dry seeds. C. jamacaru seed can be classified as an oil seed due to its high lipid content. Moreover, lipids were the main reserve mobilized during germination because their levels were strongly reduced after seed germination, while proteins were the second most utilized reserve in this process.

  7. Rhipsalis (Cactaceae)-like Hierarchical Structure Based Microfluidic Chip for Highly Efficient Isolation of Rare Cancer Cells.

    Science.gov (United States)

    Yan, Shuangqian; Zhang, Xian; Dai, Xiaofang; Feng, Xiaojun; Du, Wei; Liu, Bi-Feng

    2016-12-14

    The circulating tumor cells (CTCs), originating from the primary tumor, play a vital role in cancer diagnosis, prognosis, disease monitoring, and precise therapy. However, the CTCs are extremely rare in the peripheral bloodstream and hard to be isolated. To overcome current limitations associated with CTC capture and analysis, the strategy incorporating nanostructures with microfluidic devices receives wide attention. Here, we demonstrated a three-dimensional microfluidic device (Rm-chip) for capturing cancer cells with high efficiency by integrating a novel hierarchical structure, the "Rhipsalis (Cactaceae)"-like micropillar array, into the Rm-chip. The PDMS micropillar array was fabricated by soft-lithography and rapid prototyping method, which was then conformally plated with a thin gold layer through electroless plating. EpCAM antibody was modified onto the surface of the micropillars through the thiol-oligonucleotide linkers in order to release captured cancer cells by DNase I treatment. The antibody-functionalized device achieved an average capture efficiency of 88% in PBS and 83.7% in whole blood samples. We believe the Rm-chip provided a convenient, economical, and versatile approach for cell analysis with wide potential applications.

  8. Sturge-Weber Syndrome: Brain Magnetic Resonance Imaging and Neuropathology Findings.

    Science.gov (United States)

    Pinto, Anna L; Chen, Liam; Friedman, Rachel; Grant, Patricia E; Poduri, Annapurna; Takeoka, Masanori; Prabhu, Sanjay P; Sahin, Mustafa

    2016-05-01

    We describe the brain magnetic resonance imaging (MRI) abnormalities and neuropathologic findings of patients with Sturge-Weber syndrome and medically refractory epilepsy. We reviewed the clinical features, preoperative MRI studies, and pathologic findings of all patients with Sturge-Weber syndrome who underwent excisional surgery for intractable epilepsy at Boston Children's Hospital between 1993 and 2011. Eleven patients (male/female = 4/7) with Sturge-Weber syndrome were identified who underwent surgery for intractable epilepsy (mean age 13 ± 6.2 months), including hemispherectomy (n = 10) and focal cortical resection (n = 1). Mean age at seizure onset was 15 ± 11 weeks. Fifty-five percent (n = 6) of patients exhibited two different types of seizures, and 18% (n = 2) had three types of seizures. Focal clonic seizures were the most common type, occurring in nine patients; apnea was the second most common, occurring in four patients. Brain MRIs were reviewed in five patients. Histopathologic examination revealed varied degrees of cortical morphologic anomaly in seven of 11 patients. Overall, there were no abnormalities in the MRIs that corresponded directly with the pathologic findings except in one patient with polymicrogyria. In spite of pathologic findings of cortical anomalies in varied degrees, these findings could not be readily detected on brain MRIs. The failure to detect focal cortical dysplasia on MRIs may be attributable to the subtle microscopic nature of the abnormalities; in some of the older individuals, the imaging studies available for review were done during an advanced stage of the disease. Copyright © 2015 Elsevier Inc. All rights reserved.

  9. Manual estimations of functionally graspable target objects adhere to Weber's law.

    Science.gov (United States)

    Heath, Matthew; Manzone, Joseph

    2017-06-01

    The manual estimation task requires that participants separate the distance between their thumb and forefinger until they perceive it to match the size of a target object. Ganel and colleagues (Curr Biol 18:R599-R601, 2008a) demonstrated that manual estimations yield just-noticeable-difference (JND) scores that linearly increased with increasing target object size; that is, responses adhered to Weber's law and thus evince response mediation via relative and perception-based visual information. In turn, more recent work has reported that the size of a target object influences whether JNDs provide a reliable metric for evaluating the nature of the visual information supporting manual estimations. In particular, Bruno et al. (Neuropsychologia 91:327-334, 2016) reported that JNDs for 'large' target objects (i.e., 80 and 120 mm) violate Weber's law due to biomechanical limits in aperture opening. It is, however, important to recognize that the absolute size of the 'large' target objects employed by Bruno et al. may have exceeded some participants' functional aperture separation and resulted in a biomechanical strategy serving as the only viable response mode. Hence, the present investigation employed a manual estimation task wherein target object sizes were proportionately matched to decile increments (i.e., 10, 20, …, 70 and 80%) of individual participants' maximal aperture separation. Results showed that JNDs increased linearly with increasing target object size. Accordingly, we propose that manual estimations of target objects within a functionally 'graspable' range adhere to Weber's law and are mediated via relative and perception-based visual information.

  10. Moving the weber fraction: the perceptual precision for moment of inertia increases with exploration force.

    Science.gov (United States)

    Debats, Nienke B; Kingma, Idsart; Beek, Peter J; Smeets, Jeroen B J

    2012-01-01

    How does the magnitude of the exploration force influence the precision of haptic perceptual estimates? To address this question, we examined the perceptual precision for moment of inertia (i.e., an object's "angular mass") under different force conditions, using the Weber fraction to quantify perceptual precision. Participants rotated a rod around a fixed axis and judged its moment of inertia in a two-alternative forced-choice task. We instructed different levels of exploration force, thereby manipulating the magnitude of both the exploration force and the angular acceleration. These are the two signals that are needed by the nervous system to estimate moment of inertia. Importantly, one can assume that the absolute noise on both signals increases with an increase in the signals' magnitudes, while the relative noise (i.e., noise/signal) decreases with an increase in signal magnitude. We examined how the perceptual precision for moment of inertia was affected by this neural noise. In a first experiment we found that a low exploration force caused a higher Weber fraction (22%) than a high exploration force (13%), which suggested that the perceptual precision was constrained by the relative noise. This hypothesis was supported by the result of a second experiment, in which we found that the relationship between exploration force and Weber fraction had a similar shape as the theoretical relationship between signal magnitude and relative noise. The present study thus demonstrated that the amount of force used to explore an object can profoundly influence the precision by which its properties are perceived.

  11. Moving the weber fraction: the perceptual precision for moment of inertia increases with exploration force.

    Directory of Open Access Journals (Sweden)

    Nienke B Debats

    Full Text Available How does the magnitude of the exploration force influence the precision of haptic perceptual estimates? To address this question, we examined the perceptual precision for moment of inertia (i.e., an object's "angular mass" under different force conditions, using the Weber fraction to quantify perceptual precision. Participants rotated a rod around a fixed axis and judged its moment of inertia in a two-alternative forced-choice task. We instructed different levels of exploration force, thereby manipulating the magnitude of both the exploration force and the angular acceleration. These are the two signals that are needed by the nervous system to estimate moment of inertia. Importantly, one can assume that the absolute noise on both signals increases with an increase in the signals' magnitudes, while the relative noise (i.e., noise/signal decreases with an increase in signal magnitude. We examined how the perceptual precision for moment of inertia was affected by this neural noise. In a first experiment we found that a low exploration force caused a higher Weber fraction (22% than a high exploration force (13%, which suggested that the perceptual precision was constrained by the relative noise. This hypothesis was supported by the result of a second experiment, in which we found that the relationship between exploration force and Weber fraction had a similar shape as the theoretical relationship between signal magnitude and relative noise. The present study thus demonstrated that the amount of force used to explore an object can profoundly influence the precision by which its properties are perceived.

  12. Ocular manifestations of Sturge–Weber syndrome: pathogenesis, diagnosis, and management

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    Mantelli F

    2016-05-01

    Full Text Available Flavio Mantelli,1 Alice Bruscolini,2 Maurizio La Cava,2 Solmaz Abdolrahimzadeh,2 Alessandro Lambiase2 1Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, USA; 2Department of Sense Organs, Section of Ophthalmology, University of Rome “Sapienza”, Rome, Italy Abstract: Sturge–Weber syndrome has been included in the group of phakomatoses that is characterized by hamartomas involving the brain, skin, and eyes. The characteristic facial port-wine stain, involving the first branch of the trigeminal nerve and the embryonic vasculature distribution in this area, leads to several ocular complications of the anterior segment and can involve the eyelids and conjunctiva. The posterior segment of the eyes is also affected with diffuse choroidal hemangiomas. However, the most frequent ocular comorbidity is glaucoma with a prevalence rate ranging from 30%–70%. Glaucoma is related to anterior chamber malformations, high episcleral venous pressure (EVP, and changes in ocular hemodynamics. Glaucoma can be diagnosed at birth, but the disease can also develop during childhood and in adults. The management of glaucoma in Sturge–Weber syndrome patients is particularly challenging because of early onset, frequently associated severe visual field impairment at the time of diagnosis, and unresponsiveness to standard treatment. Several surgical approaches have been proposed, but long-term prognosis for both intraocular pressure control and visual function remains unsatisfactory in these patients. Choroidal hemangiomas may also lead to visual impairment thorough exudative retinal detachment and macular edema. Treatment of exudative hemangioma complications is aimed at destructing the tumor or decreasing tumor leakage. Keywords: Sturge–Weber syndrome, glaucoma, choroidal hemangiomas, port-wine stain, congenital disease, glaucoma surgery

  13. Reproductive biology of a highly endemic species: Cipocereus laniflorus N.P. Taylor & Zappi (Cactaceae Biologia reprodutiva de uma espécie altamente endêmica: Cipocereus laniflorus Taylor & Zappi (Cactaceae

    Directory of Open Access Journals (Sweden)

    Juliana Ordones Rego

    2012-03-01

    Full Text Available Cipocereus laniflorus N.P. Taylor & Zappi is an endemic species from the Serra do Caraça, State of Minas Gerais, Brazil. In order to propose conservation strategies for this species, its reproductive strategies were investigated, including reproductive phenology, floral biology, floral visitors and breeding system. The flowering and fruiting period extends from May to October. Few flowers per plant open each night, producing up to 0.4 ml nectar, but 30% of them are nectarless. Probably pollen is also offered as a resource. Fruiting efficiency of C. laniflorus (47% is close to that found in other Cactaceae species. Pollen of this species was detected in Anoura geoffroy, Soricina glossophaga and Pygoderma bilabiatum bats. Amongst the characteristics related to bat-pollination syndrome found in C. laniflorus, the cream-white colouring of the internal part of the flower, the numerous stamens and the nocturnal anthesis of short duration can be highlighted. Flowers of C. laniflorus are also visited by Nitidulidae beetles, Trigona fulviventris bees and hummingbirds, however bats are the main pollinators of this species. Finally, as a self-sterile species, C. laniflorus needs a pollinator and is more susceptible to the risk of extinction if local disturbances affect its pollination system.Cipocereus laniflorus N.P. Taylor & Zappi é uma espécie endêmica da Serra do Caraça, Minas Gerais, Brasil. A fim de se propor estratégias de conservação para esta espécie, estudos sobre sua biologia reprodutiva foram realizados, incluindo fenologia reprodutiva, biologia floral, visitantes florais e o sistema reprodutivo. O período de floração e frutificação ocorre de maio a outubro. Poucas flores abrem-se por planta a cada noite, podendo produzir até 0.4 ml de néctar, poré 30% destas não apresentam néctar. Cipocereus laniflorus provavelmente oferece também pólen como recurso. A eficiência de frutificação sob condições naturais de poliniza

  14. Quantum games of opinion formation based on the Marinatto-Weber quantum game scheme

    Science.gov (United States)

    Deng, Xinyang; Deng, Yong; Liu, Qi; Shi, Lei; Wang, Zhen

    2016-06-01

    Quantization has become a new way to investigate classical game theory since quantum strategies and quantum games were proposed. In the existing studies, many typical game models, such as the prisoner's dilemma, battle of the sexes, Hawk-Dove game, have been extensively explored by using quantization approach. Along a similar method, here several game models of opinion formations will be quantized on the basis of the Marinatto-Weber quantum game scheme, a frequently used scheme of converting classical games to quantum versions. Our results show that the quantization can fascinatingly change the properties of some classical opinion formation game models so as to generate win-win outcomes.

  15. Weber, Beck y creación feminista de sentido en la escuela

    OpenAIRE

    Burgués, A. (Ana); Serradell Pumareda, Olga

    2009-01-01

    En las sociedades actuales se ha producido de manera generalizada una pérdida de sentido de las instituciones. Por un lado, a través de algunas de las aportaciones de autores de la teoría sociológica clásica como Weber y contemporánea como Beck, analizamos la pérdida de sentido que se da en las sociedades contemporáneas hacia la institución educativa. Por otro lado, analizamos algunas de las acciones que los sujetos llevan a cabo y que aportan de nuevo sentido a la escuela. Para ello partimos...

  16. An Object-Oriented Metamodel for Bunge-Wand-Weber Ontology

    CERN Document Server

    Kiwelekar, Arvind W

    2010-01-01

    A UML based metamodel for Bunge-Wand-Weber (BWW) ontology is presented. BWW ontology is a generic framework for analysis and conceptualization of real world objects. It includes categories that can be applied to analyze and classify objects found in an information system. In the context of BWW ontology, the metamodel is a representation of the ontological categories and relationships among them. An objective behind developing an object-oriented metamodel has been to model BWW ontology in terms of widely used notions in software development. The main contributions of this paper are a classification for ontological categories, a description template, and representations through UML and typed based models.

  17. APLIKASI TEORI WEBER DALAM PEMBANGUNAN AGROINDUSTRI PT. WINA POHAN DI BANYUASIN SUMATERA SELATA

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    Enny Sri Martini

    2014-03-01

    Full Text Available Implementation of development programs is not only to analyze the economic growth, but the development is also reflected in the acceleration, expansion of job opportunities and natural resource utilization. Accelerating the development of large scale is able to prosper the development of society in general. The purpose of this study is to analyze the development work being done in South Sumatra, one of which is the determination of the location of PT. Wina Pohan agroindustrial development in South Sumatera Banyuasin. In the analysis documented significant that agroindustrial PT. Wina Pohan development and apply theories Weber, performed through the determination of location factors, among others, transportation costs, wage labor, and the strength of agglomeration or deaglomerasi. Overall conclusion that the existence of PT. Wina Pohan apply Locational Triangle Weber, the model Locatioan District Area (DLA showed less performance due to geographical factors, facilities and infrastructure. Agro-industry with raw material corn development in locations determined Banyuasin district, and Musi Banyuasin. Recorded in the history of the two districts before otonomy combined one Musi Banyuasin district In agro-industry development planning based location determination of the location of inferred resources of raw materials, the provision of jobs, facilities and infrastructure, wage labor, agglomeration or deaglomerasi strength. Success of the development should be able to improve the well-being of the community and society generally South Sumatra. Pelaksanaan pembangunan tidak hanya untuk menganalisis pertumbuhan ekonomi, akan tetapi pembangunan juga dapat dilihat melalui percepatan, perluasan peluang kerja dan pemanfaatan sumberdaya alam. Percepatan pembangunan dalam skala besar adalah pembangunan yang dapat mensejahterakan kehidupan masyarakat pada umumnya.Tujuan penulisan ini untuk mengkaji, menganalisis pembangunan yang telah dilakukan di Sumatera

  18. Modelo de elemento finito para el corte de la fibra de Agave tequilana Weber

    OpenAIRE

    2013-01-01

    En este trabajo, se desarrolla y valida un modelo 3D de elemento finito explícito. El modelo simula la interacción cuchilla-fibra durante el proceso de corte de la fibra de Agave tequilana Weber. Para el estudio, se modela una cuchilla con características geométricas con borde liso y ángulo de ataque de 30°. La cuchilla se considera como cuerpo rígido con propiedades mecánicas de un acero convencional. El material de la fibra sigue un modelo elastoplástico bilineal utilizando las propiedades ...

  19. A clinician′s dilemma: Sturge-Weber syndrome ′without facial nevus′!!

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    Sujit A Jagtap

    2013-01-01

    Full Text Available Sturge-Weber syndrome (SWS is a rare, sporadic neurocutaneous syndrome characterized by a classical triad of facial port wine nevus, ipsilateral leptomeningeal angiomatosis (LAM and glaucoma. The incidence of SWS is 1/50,000 live births, although it is more often underreported. The incidence of SWS without facial nevus is not known, although very few patients without facial nevus have been reported. In these patients, the diagnosis of SWS is made by the findings of computed tomography, magnetic resonance imaging, and histopathology. Here, we report three patients with SWS from our cohort of 28 patients with SWS without facial nevus and discuss their clinical profile and outcome.

  20. Connection between Shannon's information theory and the Weber-Fechner law

    CERN Document Server

    Choe, Haengjin

    2010-01-01

    Information theory is generally considered to have been founded in 1948 by Claude E. Shannon in his seminal work, "A mathematical theory of communication." Shannon defined mathematically the amount of information transmitted over a channel. Meanwhile, psychophysics is the study of quantitative relations between psychological events and physical events or, more specifically, between sensations and the stimuli that produce them. It seems that Shannon's information theory bears no relation to psychophysics established by German scientist and philosopher Gustav Theodor Fechner. To our astonishment, it is possible that we combine two fields. And therefore we can measure mathematically perceptions of the physical stimuli applicable to the Weber-Fechner law.

  1. Thermal conductivity of single-layer WSe2 by a Stillinger-Weber potential

    Science.gov (United States)

    Norouzzadeh, Payam; Singh, David J.

    2017-02-01

    In this study, we present the parameters of the Stillinger-Weber (SW) potential for single-layer WSe2 and calculate its in-plane thermal conductivity using a reverse non-equilibrium molecular dynamics simulation. The parameters are fitted to the phonon dispersion curves from literature density functional perturbation theory and experimental structural properties. The set reproduces the phonon dispersion well. The in-plane thermal conductivity of single-layer WSe2 and its dependency on sample length and temperature are calculated and the results are in good agreement with experimental values. Our developed SW-type potential facilitates further investigations on thermal, mechanical and other properties of WSe2.

  2. Les Ecrits politiques de Max Weber: esquisse d’une lecture sociologique

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    François Chazel

    2014-05-01

    Full Text Available The author argues that Max Weber in his Politische Schriften (from 1906 to 1919 is using a sociological approach to the prevailing problems of Russia and Germany, grounded on categories of his political sociology. Weber’s in-depth analysis of the Russian Revolution of 1905 and of its outcome brilliantly illustrates this approach. In the first of his memoirs, overviewing Russian society as a whole, he highlights the multiple impediments to a success of bourgeois democracy in Russia; in the second one, he points out the political factors, as symbolized by “pseudo-constitutionalism”, that caused the failure of the liberal Revolution. In his “Parliament and Government in a reorganized Germany”, Weber rests on the analysis of bureaucracy in his first “sociology of domination”, pointing out that bureaucracy is unavoidable in modern society as well as it threatens to be overpowering. It is therefore required, in Weber’s view, to build institutions assuming a counterpoising function: he first conferred this role on a strong parliament, on the model of the English Parliament. Then, after the fall of the Wilhelminian Empire, he emphasized the plebiscitary power of a Reichspräsident. As a whole, Weber’s analyses bring out the dilemma between oligarchy and democracy but also the subtle relations linking them in the context of political modernity. Oligarchy is a threat to democracy because bureaucracy’s power can, if not checked, extend into the political field and because political parties are more and more oligarchic organizations. Large-scale socialism can only worsen the situation and lead to “bureaucracy’s dictatorship”. Therefore, Weber argues for the setting up of counterweights on the societal level. There is a way out of Michels’ dilemma in the national competition between bureaucratized parties. Weber is faced again with an authoritarian danger when he emphasizes in his last political writings the plebiscitary

  3. Autonomy and democracy in the theories of Max Weber and Cornelius Castoriadis

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    D. V. Kataev

    2015-01-01

    Full Text Available Realization of Weber’s research program, its further development and application is one of the main objectives of neo- and post-Weberianism. This article is devoted to the analysis of interrelation of views of Max Weber and Cornelius Castoriadis on problems of an autonomy, bureaucracy and democracy in the light of an explication of Weber’s research program in methodological and ontological aspects. Problems of a representativeness of democracy in the conditions of bureaucratization and oligarchization are considered.

  4. Estudio de la eficiencia de troceado de Agave tequilana Weber empleando un molino con cuchillas articuladas

    OpenAIRE

    Alberto Saldaña Robles; César Gutiérrez Vaca; Ryszard Jerzy Serwatowski Hlawinska; Noé Saldaña Robles; José Manuel Cabrera Sixto; Oscar Alejandro Martínez Jaime; J. Concepción Quiroz Ramírez; Adrián Flores Ortega; Salvador García Barrón; José Armando Juárez Guaní

    2012-01-01

    En el presente estudio se evaluó la eficiencia de troceado de hojas y piña del Agave tequilana Weber, empleando un molino con cuchillas articuladas acopladas en forma de Y . Los factores estudiados que influyen en la eficiencia de troceado se emplearán en el diseño del cabezal de troceado de un prototipo de cosechadora-troceadora de agave, cuyo fin es obtener la materia prima para la difusión y obtención de bioetanol. La eficiencia de troceado se definió como el porcentaje de trozos de agave...

  5. Estudio de la eficiencia de troceado de Agavetequilana Weber empleando un molino con cuchillas articuladas

    OpenAIRE

    Alberto Saldaña Robles; Cesar Gutiérrez Vaca; Ryszard Jerzy Serwatowski Hlawinska; Noé Saldaña Robles; José Manuel Cabrera Sixto

    2012-01-01

    En el presente estudio se evaluó la eficiencia de troceado de hojas y piña del Agavetequilana Weber, empleando un molino con cuchillas articuladas tipo "Y". Los factores estudiados que influyen en la eficiencia de troceado se emplearán en el diseño del cabezal de trituración de un prototipo de cosechadora-trituradora de agave, cuyo fin es obtener la materia prima para la difusión y obtención de bioetanol. La eficiencia de troceado se definió como el porcentaje de trozos de agave menores a ...

  6. Report of a newborn with hemimegalencephaly in association with Klippel-Trenaunay-Weber syndrome

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    Obradović Slobodan

    2005-01-01

    Full Text Available Klippel-Trenaunay-Weber syndrome (KTW is a rare phacomatosis whose main characteristics are: cutaneous angiomas (vascular nevi, varicose veins (arteriovenous fistulae and hemihypertrophy of bones and soft tissues. This is a case report of KTW syndrome which was diagnosed in the first days of life on the basis of characteristic vascular nevi on the skin of the trunk and extremities in addition to hypertrophy of the left part of the body. Neuroradiologically verified hemimegalencephaly associated with temporal hemangioma represents a special particularity in our case. Measures of monitoring the child as well as stimulating and therapeutic actions were the issues of discussion.

  7. On the Common Structure of Bohmian Mechanics and the Ghirardi-Rimini-Weber Theory

    CERN Document Server

    Allori, V; Tumulka, R; Zanghì, N; Allori, Valia; Goldstein, Sheldon; Tumulka, Roderich; Zanghi, Nino

    2006-01-01

    Bohmian mechanics and Ghirardi-Rimini-Weber theory provide opposite resolutions of the quantum measurement problem: the former postulates additional variables (the particle positions) besides the wave function, whereas the latter implements spontaneous collapses of the wave function by a nonlinear and stochastic modification of the Schr\\"odinger equation. Still, both theories, when understood appropriately, share the following structure: They are ultimately not about wave functions but about matter moving in space, represented by either particle trajectories, fields on space-time, or a discrete set of space-time points. The role of the wave function then is to guide the motion of the matter.

  8. Protestantesimo ascetico, spirito del capitalismo, armonia degli interessi. Secolarizzazioni e immagini del mondo in Max Weber

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    Dimitri D’Andrea

    2014-05-01

    Full Text Available The purpose of this paper is to reconstruct Weber’s genealogy of the spirit of capitalism. Weber conceives the transition from the ethics of ascetic Protestantism to the spirit of capitalism as a process of secular-ization. The analysis of the origin of the spirit of capitalism will help illustrate the plurality of paths of secularization, highlighting their different orientation and their independent origin. The emancipation of the economic ethos from the religious fundaments can not be understood without recurring to a notion like that of rival subrogation: a notion irreducible and opposite to that of secularization.

  9. Adult onset segmental cavernous hemangioma, varicose veins and limb atrophy (klippel-trenaunay-Weber syndrome variant

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    Sawhney MPS

    1990-01-01

    Full Text Available A 22 year-old woman presented with multiple soft, compressible, protuberant, bluish cutaneous lesions as well as firm, non-compressible, subcutaneous masses and varicose veins affecting the right upper limb of three years duration. There was atrophy of soft tissue of forearm by 2.5 cm. X-ray showed soft tissue densities, multiple phleboliths and hypoplastic forearm bones. Histopathological examination from cutaneous lesions revealed cavernous hemangioma. Adult onset cavernous hemangioma involving one upper limb and breast with multiple phleboliths and limb atrophy is a very unusual presentation of Klippel-Trenaunay-Weber syndrome.

  10. Max Weber y la incidencia de la religión en los procesos de estratificación social

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    Rafael Arriaga Martínez

    2009-01-01

    Full Text Available En este artículo tratamos de aportar elementos de conocimientos susceptibles de contribuir a una mejor comprensión de la posición conceptual de Max Weber con respecto al catolicismo, definido éste como una religión globalmente en conflicto con el ethos capitalista. Sostenemos la pertinencia de la tesis religiosa de Weber pese a ciertas evidencias empíricas favorables a los católicos de ascendencia europea en términos de ascenso social. Se trata de un proceso social posible de explicar a la luz de una serie de conceptos que Weber define en su obra como racionalidad difusa, fuerzas históricas y la paradoja de la voluntad del hombre y su destino, o efectos no esperados, para expresarlo con el lenguaje de Raymond Boudon.

  11. A relação entre Democracia e Burocracia nos escritos políticos de Max Weber

    OpenAIRE

    José Cleyton Neves Lopes

    2011-01-01

    Max Weber foi precursor em apresentar as características e as consequências do processo de burocratização nas esferas sociais, sobretudo, no Estado. Em relação à democracia, Weber não deixou uma definição explícita em seus escritos, no entanto, com frequência a concepção de democracia como método para eleger líderes seja remetida a ele. O presente artigo tem como objetivo geral analisar a relação que Weber estabeleceu entre a democracia e a burocracia, dois conceitos que se entrecruzaram em v...

  12. Weber's syndrome with recovery ct demonstration of an end-zone infarction in the territory of the mesencephalic artery

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    R. Oliveira-Souza

    1991-03-01

    Full Text Available Weber's syndrome is one of the classically described brainstem syndromes. The mesencephalic artery and the syndromes resulting from occlusion of its branches have been attracting increasing interest in the past few years. We present here a case of Weber's syndrome emphasizing that (1 it is one of the major syndromes deriving from infarction in the territory of the mesencephalic artery; (2 that at least two clinical patterns of Weber's syndrome may be distinguished on the basis of the presence or lack of abnormal somnolence, mental confusion, and abulia; and (3 that each one of these patterns seems to be correlated with damage to distinct zones within the general territory of the mesencephalic artery.

  13. Insect growth regulatory effects of some extracts and sterols from Myrtillocactus geometrizans (Cactaceae) against Spodoptera frugiperda and Tenebrio molitor.

    Science.gov (United States)

    Céspedes, Carlos L; Salazar, J Rodrigo; Martínez, Mariano; Aranda, Eduardo

    2005-10-01

    A methanol extract from the roots and aerial parts of Myrtillocactus geometrizans (Cactaceae) yielded peniocerol 1, macdougallin 2, and chichipegenin 3. The natural products 1, 2 their mixtures, MeOH and CH(2)Cl(2) extracts showed insecticidal and insect growth regulatory activity against fall armyworm [Spodoptera frugiperda J. E. Smith (Lepidoptera: Noctuidae)], an important insect pest of corn, and [Tenebrio molitor (Coleoptera)], a pest of stored grains in Mexico. The most active compounds were 1, 2, and a mixture (M(2)) of 1 and 2 (6:4). All these extracts, compounds and the mixture had insect growth regulating (IGR) activity between 5.0 and 50.0 ppm and insecticidal effects between 50 and 300 ppm in diets. The extracts were insecticidal to larvae, with lethal doses between 100 and 200 ppm. These compounds appear to have selective effects on the pre-emergence metabolism of Coleoptera, because in all treatments of the larvae of T. molitor, pupation were shortened and this process show precociousness in relation to controls. In contrast to S. frugiperda larvae, onset of pupation was noticeably delayed. Emergence in both cases was drastically diminished. In both pupae and in the few adults that were able to emerge, many deformations were observed. The results of these assays indicated that the compounds were more active than other known natural insect growth inhibitors such as gedunin and methanol extracts of Cedrela salvadorensis and Yucca periculosa. Peniocerol, macdougallin and chichipegenin, as well as mixtures of these substances, may be useful as natural insecticidal agents.

  14. Influence of Pleistocene glacial/interglacial cycles on the genetic structure of the mistletoe cactus Rhipsalis baccifera (Cactaceae) in Mesoamerica.

    Science.gov (United States)

    Ornelas, Juan Francisco; Rodríguez-Gómez, Flor

    2015-01-01

    Phylogeographical work on cloud forest-adapted species provides inconsistent evidence on cloud forest dynamics during glacial cycles. A study of Rhipsalis baccifera (Cactaceae), a bird-dispersed epiphytic mistletoe cactus, was conducted to investigate genetic variation at sequence data from nuclear [internal transcribed spacer (ITS), 677 bp] and chloroplast (rpl32-trnL, 1092bp) DNA for 154 individuals across the species range in Mesoamerica to determine if such patterns are consistent with the expansion/contraction model of cloud forest during glacial cycles. We conducted population and spatial genetic analyses as well as gene flow and divergence time estimates between 24 populations comprising the distribution of R. baccifera in Mexico and Guatemala to gain insight of the evolutionary history of these populations, and a complementary species distribution modeling approach to frame information derived from the genetic analyses into an explicit paleoecological context. The results revealed a phylogeographical break at the Isthmus of Tehuantepec, and high levels of genetic diversity among populations and cloud forest areas. Despite the genetic differentiation of some R. baccifera populations, the widespread ITS ribotypes suggest effective nuclear gene flow via pollen and population differentiation shown by the rpl32-trnL suggests more restricted seed flow. Predictions of species distribution models under past last glacial maximum (LGM) climatic conditions and a significant signal of demographic expansion suggest that R. baccifera populations experienced a range expansion tracking the conditions of the cloud forest distribution and shifted to the lowlands with population connectivity during the LGM. © The American Genetic Association 2015. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  15. Diffusion tensor imaging and magnetic resonance spectroscopy of the brain in a patient with Sturge-Weber syndrome.

    Science.gov (United States)

    Sijens, P E; Gieteling, E W; Meiners, L C; Sival, D A; Potze, J H; Irwan, R; Oudkerk, M

    2006-11-01

    Quantitative brain MR spectroscopy (MRS) and diffusion tensor imaging (DTI) were used to characterize one patient with Sturge-Weber syndrome. Choline increases and N-acetylaspartate decreases were observed in pathologic frontal gray matter tissue compared to contralateral unaffected brain tissue without any change in the diffusion tensor imaging parameters (fractional anisotropy, apparent diffusion coefficient). The N-acetylaspartate decreases and/or choline increases observed here and in eight previously described Sturge-Weber patients probably reflect neuronal loss or dysfunction and demyelination as a result of recurrent seizures.

  16. Diffusion Tensor Imaging and Magnetic Resonance Spectroscopy of the Brain in a Patient with Sturge-Weber Syndrome

    Energy Technology Data Exchange (ETDEWEB)

    Sijens, P.E.; Gieteling, E.W.; Meiners, L.C.; Sival, D.A.; Potze, J.H.; Irwan, R.; Oudkerk, M. [Univ. Medical Center Groningen (Netherlands). Dept. of Radiology

    2006-11-15

    Quantitative brain MR spectroscopy (MRS) and diffusion tensor imaging (DTI) were used to characterize one patient with Sturge-Weber syndrome. Choline increases and N-acetylaspartate decreases were observed in pathologic frontal gray matter tissue compared to contralateral unaffected brain tissue without any change in the diffusion tensor imaging parameters (fractional anisotropy, apparent diffusion coefficient). The N-acetylaspartate decreases and/or choline increases observed here and in eight previously described Sturge-Weber patients probably reflect neuronal loss or dysfunction and demyelination as a result of recurrent seizures.

  17. Max Weber, educación para las ciencias y formación democrática

    Directory of Open Access Journals (Sweden)

    Javier Benito Seoane Cobas

    2010-04-01

    Full Text Available El ensayo explora la relación que hay entre la educación para las ciencias y la educación para la democracia en el pensamiento de Max Weber, un problema no tratado por el sociólogo de Erfurt. Ello se realiza a partir del análisis del plano epistemológico y del análisis sobre la ética del científico de Weber. Al final, se elaboran dos interpretaciones razonables sobre el objeto del ensayo y se selecciona una de las mismas sobre la base de una apuesta pluralista.

  18. Le concept de « configuration » et ses implications empiriques : Elias avec et contre Weber

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    André Ducret

    2011-04-01

    Full Text Available Comment se fait-il que Norbert Elias ait autant cherché à prendre ses distances avec la conception de la sociologie que se faisait Max Weber alors que leurs démarches paraissent si proches ? On évaluera d’abord la portée des arguments avancés contre ce « bourgeois libéral » que serait demeuré le second. Puis on en dégagera les implications empiriques à partir d’extraits choisis dans l’œuvre du premier. On s’arrêtera enfin sur la démarche dite « synoptique » que Norbert Elias propose à tout sociologue d’adopter. En fin de compte, il apparaîtra que ce dernier défend une approche relationnelle de la contrainte sociale que n’aurait pas désavouée Max Weber.The notion of « configuration » and its empirical implications: Elias with or against WeberWhy is it that Norbert Elias went to such lengths to distance himself from Max Weber’s conception of sociology whilst their respective approaches seem so close? I will first evaluate the relevance of his arguments against the “liberal bourgeois” that Weber was to the end. I will then bring out the empirical implications from a number of extracts selected from his works. I will conclude by examining his “synoptic” approach, one to be followed by all sociologists. All things considered, it appears that Elias defends a relational approach of social constraint that Max Weber would not have disowned.El concepto de « configuración » y sus consecuencias empíricas: ¿Es Norbert Elias partidario o opuesto a  Weber?¿Como es posible que Norbert Elias haya tomado tanto la distancia con respecto a la visión sociológica de Max Weber a pesar de que su propia concepción se le asemeje mucho? Evaluaremos en primer lugar el alcance de los argumentos dirigidos del primero contra el «burgués liberal». Seguidamente subrayaremos las implicaciones empíricas a partir de citas escogidas de los escritos de Elias. Finalmente haremos hincapié en el encaminamiento

  19. Operationalizing Max Weber's probability concept of class situation: the concept of social class.

    Science.gov (United States)

    Smith, Ken

    2007-03-01

    In this essay I take seriously Max Weber's astonishingly neglected claim that class situation may be defined, not in categorial terms, but probabilistically. I then apply this idea to another equally neglected claim made by Weber that the boundaries of social classes may be determined by the degree of social mobility within such classes. Taking these two ideas together I develop the idea of a non-categorial boundary 'surface' between classes and of a social class 'corridor' made up of all those people who are still to be found within the boundaries of the social class into which they were born. I call social mobility within a social class 'intra-class social mobility' and social mobility between classes 'inter-class social mobility'. I also claim that this distinction resolves the dispute between those sociologists who claim that late industrial societies are still highly class bound and those who think that this is no longer the case. Both schools are right I think, but one is referring to a high degree of intra-class social mobility and the other to an equally high degree of inter-class mobility. Finally I claim that this essay provides sociology with only one example among many other possible applications of how probability theory might usefully be used to overcome boundary problems generally in sociology.

  20. TRANSMITTING CHARISMA: Re-reading Weber through the Traditional Islamic Leader in Modern Java

    Directory of Open Access Journals (Sweden)

    Achmad Zainal Arifin

    2016-09-01

    Full Text Available This paper tries to reconsidering the theory of authority, propounded by Max Weber, a pioneer of classical theory of sociology, particularly on his idea of charisma. Weber predicted that modernisation, as represented by the rationalisation process which is unstoppable phenomena for modern world lead the changing process of charismatic authority into other forms of authorities, especially the legal-rational one. By describing the dynamics of Kyai’s charismatic authority within the pesantren milieu, the rationalisation process tends to enhance the existence of charismatic authority of kyai. Based on a case study of a famous traditional pesantren in Yogyakarta, this paper elaborates the process of rationalisation describes how all instruments of traditional pesantren, including those that are resulted from the process, have contribution in preserving and maintaining the charismatic authority o kyai. Most members of traditional pesantren even believe that the quality of charisma, which is laid on the foundation of supernatural power, can be transmitted to the next successor through the institutionalisation of practices to gain that power.

  1. Sturge-Weber Syndrome Associated with Monolateral Ocular Melanocytosis, Iris Mammillations, and Diffuse Choroidal Haemangioma

    Directory of Open Access Journals (Sweden)

    Andrea Maria Plateroti

    2017-07-01

    Full Text Available We present the case of a 12-year-old boy with Sturge-Weber syndrome and ocular melanocytosis who presented with bilateral naevus flammeus of the face and hyperpigmentation of the right iris associated with ipsilateral iris mammillations. The patient had glaucoma and a diffuse choroidal haemangioma of the right eye. Optical coherence tomography of the anterior segment confirmed iris hyper-pigmentation and did not show abnormalities of the chamber angle structures. B-scan ultrasonography and enhanced depth imaging optical coherence tomography were performed and showed a marked difference in thickness and reflectance between the right and left choroid. Visual field examinations with perimetry showed early defects in the right eye. Peripapillary optical coherence imaging showed borderline values of retinal nerve fibre layer thickness reduction in the right eye. Sturge-Weber syndrome associated with ocular melanocytosis and iris mammillations is an extremely rare condition. This paper highlights the role of multi-imaging methods in the enhanced evaluation of rare diseases towards choosing the most appropriate management strategies and improving the follow-up of patients over time.

  2. Effects of momentum ratio and Weber number on spray half angles of liquid controlled pintle injector

    Science.gov (United States)

    Son, Min; Yu, Kijeong; Koo, Jaye; Kwon, Oh Chae; Kim, Jeong Soo

    2015-02-01

    A pintle injector is advantageous for throttling a liquid rocket engine and reducing engine weight. This study explores the effects of momentum ratio and Weber number at various injection conditions on spray characteristics of the pintle injector for liquid-gas propellants. A liquid sheet is injected from a center pintle nozzle and it is broken by a gas jet from an annular gap. The pressure drops of propellants, and the pintle opening distance were considered as control variables; using 0.1 ˜1.0 as a bar for the pressure drop of the liquid injection, a 0.01˜0.2 bar for the pressure drop of gas jet and a 0.2˜ 1.0 mm for the pintle opening distance. The discharge coefficient was decreased linearly before the pintle opening distance of 0.75 mm and then, the coefficient was slightly increased. Spray images were captured by a CMOS camera with high resolution. Then, the shadow and reflected images were analyzed. Spray distributions were measured by a patternator with an axial distance of 50 mm from a pintle tip. Finally, the spray half angles had an exponentially decreasing correlation as a momentum ratio divided by the Weber number. Also, the spray half angles from the spray distribution were underestimated compared to those measured from the captured images.

  3. Hemimegalencephaly in the Klippel-Trenaunay-Weber syndrome. The radiological manifestation

    Energy Technology Data Exchange (ETDEWEB)

    Urui, Seishiro; Oi, Shizuo

    1987-04-01

    The Klippel-Trenaunay-Weber syndrome is characterized by skeletal and soft-tissue hypertrophy, segmentally distributed cutaneous nevi, and vascular anomalies. Only a few cases of this syndrome associated with hemimegalencephaly have been reported previously. However, we have experienced such a case of Klippel-Trenaunay-Weber syndrome with hemicranial hypertrophy, and so have analyzed this case from the neuroradiological point of view. The patient was a 6-month-old female with hemihypertrophy and hemimegalencephaly on the same, right side. A skull X-ray showed that the skull and facial bones were all hypertrophic on the right side and that all the sutures were open. A CT scan demonstrated that all the intracranial structures, including the ventricle on the right, were larger than those on the left. On the right side, we noticed a periventricular low-density area and spotted a calcified high-density region adjacent to the anterior horn of the lateral ventricle. Metrizamide CT cisternography exhibited ventricular stasis at 6 hours and a delayed clear-up in the subarachnoid space over the cerebral convexity in 24 hours. When we used the inversion recovery method on magnetic resonance imaging, the white matter on the right, especially in the periventricular area, was shown by a lower signal intensity than was that on the left. This could be thought to indicate the poor progress of the myelination process on the right side of the cerebrum.

  4. Sturge-Weber syndrome: ear, nose, and throat issues and neurologic status.

    Science.gov (United States)

    Irving, Natasha D; Lim, Jae Hyung; Cohen, Bernard; Ferenc, Lisa M; Comi, Anne M

    2010-10-01

    The pathophysiology of Sturge-Weber syndrome is poorly understood, and ear, nose, and throat involvement is possible. These issues can result in frequent illnesses or airway obstruction, affecting patients' neurologic status. Patients with definite brain involvement who reported potential ear, nose, and throat issues on intake questionnaires underwent retrospective reviews of their medical records. We examined the relationships between these issues, secondary surgical interventions, and patients' neurologic status. The most common complaints involved the sinuses and frequent ear infections. Six patients underwent placement of ear tubes, leading to improvements in migraines and stroke-like episodes in one patient, and improved seizure control in four others. Obstructive sleep apnea was confirmed in three patients who underwent sleep studies. Tonsil or adenoid removal occurred in another three patients. Surgery resulted in marked improvements regarding excessive drooling, daytime sleepiness, and breathing problems. These findings suggest that ear, nose, and throat problems occur frequently in patients with Sturge-Weber Syndrome, and when repeated ear infections are associated with uncontrolled seizures, early placement of ear tubes may be beneficial. Furthermore, patients with facial tissue hypertrophy may be at risk for obstructive sleep apnea, and should be appropriately evaluated.

  5. A Recepção Controversa de Max Weber no Brasil (1940-1980

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    Glaucia Villas Bôas

    2014-03-01

    Full Text Available El artículo analiza cómo se recibieron las ideas de Max Weber en las primeras décadas de la institucionalización de la sociología en Brasil, y argumenta que la apropiación de los postulados del autor alemán se hizo a partir de las cuestiones propias de la sociología brasileña. Este punto de vista permitió observar que proposiciones centrales de la sociología weberiana, como, por ejemplo, la formulación de los tipos ideales y del sentido de la ciencia, se recibieron con mucha parsimonia y se reelaboraron a medida que los textos del autor se fueron leyendo en contraste con otros autores. Inicialmente, se retoman textos de la revista Sociología; en seguida se discute la valorización de las proposiciones de Hans Freyer y Karl Mannheim en detrimento de las posiciones de Max Weber sobre el papel del sociólogo y, finalmente, se trata la controversia sobre los tipos ideales, liderada por Maria Sylvia de Carvalho Franco, que involucra los escritos de Florestan Fernandes y Fernando Henrique Cardoso.

  6. Generation of Maillard compounds from inulin during the thermal processing of Agave tequilana Weber Var. azul.

    Science.gov (United States)

    Mancilla-Margalli, Norma A; López, Mercedes G

    2002-02-13

    During the cooking process of Agave tequilana Weber var. azul to produce tequila, besides the hydrolysis of inulin to generate fermentable sugars, many volatiles, mainly Maillard compounds, are produced, most of which may have a significant impact on the overall flavor of tequila. Exudates (agave juice) from a tequila company were collected periodically, and color, Brix, fructose concentration, and reducing sugars were determined as inulin breakdown took place. Maillard compounds were obtained by extraction with CH(2)Cl(2), and the extracts were analyzed by GC-MS. Increments in color, Brix, and reducing sugars were observed as a function of time, but a decrease in fructose concentration was found. Many Maillard compounds were identified in the exudates, including furans, pyrans, aldehydes, and nitrogen and sulfur compounds. The most abundant Maillard compounds were methyl-2-furoate, 2,3-dihydroxy-3,5-dihydro-6-methyl-4(H)-pyran-4-one, and 5-(hydroxymethyl)furfural. In addition, a series of short- and long-chain fatty acids was also found. A large number of the volatiles in A. tequilana Weber var. azul were also detected in tequila extracts, and most of these have been reported as a powerful odorants, responsible for the unique tequila flavor.

  7. Stewart-Bluefarb acroangiodermatitis in a case of Parkes-Weber syndrome

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    Deepti H Ghia

    2014-01-01

    Full Text Available Stewart-Bluefarb acroangiodermatitis is the occurrence of pseudo-kaposiform changes with an underlying arterio-venous malformation. Parkes-Weber syndrome is a triad of arterio-venous malformation with varicose veins with bony and soft-tissue hypertrophy involving the extremity. A 13 year-old-female presented with ulcerated growth with bleeding episodes on right leg since past four years. A reddish discoloration over right leg was noticed at four years of age which remained unchanged until nine years of age, after which it showed rapid increase in size along with disproportionate increase in length and girth of right lower limb. Examination revealed hyperpigmented soft verrucous plaque over the right lower one-third of leg, along with presence of ulcers and dilated tortuous veins in the right lower leg with thrill and bruit over the right popliteal and inguinal region. A differential diagnosis of verrucous hemangioma and arterio-venous malformation with pseudo-kaposiform change was considered. Skin biopsy showed multiple fenestrated capillaries with perivascular lymphocyte infiltrate suggestive of capillary malformations. X-ray showed osteolytic defect in right tibia. Duplex ultrasound and magnetic resonance imaging of right leg showed multiple fast flowing small and medium sized arterio-venous malformations of small to moderate size. Thus, on the basis of clinical and radiological features, we made a diagnosis of Stewart-Bluefarb type of acroangiodermatitis with Parkes-Weber syndrome. She was managed conservatively with compression stockings.

  8. Intrahepatic porto-hepatic venous shunts in Rendu-Osler-Weber disease: imaging demonstration

    Energy Technology Data Exchange (ETDEWEB)

    Matsumoto, Shunro; Mori, Hiromu; Yamada, Yasunari; Hayashida, Tomoko; Hori, Yuzo; Kiyosue, Hiro [Department of Radiology, Oita Medical University, Idaigaoka 1-1, Hasama-machi, 879-5593, Oita (Japan)

    2004-04-01

    This study describes the imaging features of the intrahepatic portohepatic venous (PHV) shunt, which is a potential cause of portosystemic encephalopathy in Rendu-Osler-Weber disease. Six patients with Rendu-Osler-Weber disease (two men, four women; age range 42-73 years) were retrospectively studied. There were two from one family and three from another family. Of these patients, one was diagnosed with definitive portosystemic encephalopathy because of a psychiatric disorder. We retrospectively reviewed the radiological examinations, including abdominal angiography (n=6), three-phase dynamic helical computed tomography (CT; n=3), and conventional enhanced CT (n=1). In one patient, CT during angiography and CT angioportography were also performed. Evaluation was placed on the imaging features of intrahepatic PHV shunts. On angiography, intrahepatic PHV shunts showing multiple and small shunts <5 mm in diameter in an apparent network were detected in all patents. In two patients, a large shunt with a size of either 7 or 10 mm was associated. These intrahepatic PHV shunts were predominantly distributed in the peripheral parenchyma. Intrahepatic PHV shunts would be characterized by small and multiple shunts in an apparent network on the periphery with or without a large shunt. (orig.)

  9. Max Weber

    DEFF Research Database (Denmark)

    Harste, Gorm

    2006-01-01

    de samtidig gestaltes således, at de påvirker tænkningen? Hvorledes er det muligt at komme til en samfundsvidenskabelig afklaring heraf, , og det vil sige fastholde de krav om gyldighed, fortolkning, forståelse og forklaring, som han argumenterede for, at samfundsvidenskaberne måtte tage alvorligt....

  10. Sturge-Weber syndrome. The current neuro-imaging data; Syndrome de Sturge-Weber. Donnees actuelles de l'imagerie neuroradiologique

    Energy Technology Data Exchange (ETDEWEB)

    Boukobza, M.; Cambra, M.R.; Merland, J.J.; Enjolras, O. [Hopital Lariboisiere, 75 - Paris (France)

    2000-07-01

    Sturge-Weber syndrome (SWS) is a rare congenital sporadic disease with neuro-ocular and cutaneous vascular findings. Clinically, the full-blown condition consists of a facial port-wine stain (PWS) the V1 facial trigeminal skin area, alone or in combination with V2 and V3 PWS, seizures and ocular abnormalities (glaucoma and choroidal angioma). Radiologically, a leptomeningeal (pial) capillary and venous malformation, mostly located in the parieto-occipital area, cerebral atrophy and calcifications are demonstrated. An ipsilateral enlarged choroid plexus may be an early anatomic symptom. Development neuro-diagnostic technique for the screening of infants with an at-risk V1 PWS, as well as for the follow-up of patients with evidence SWS. Accelerated myelination in the involved hemisphere may be early diagnostic feature before 6 months of age. Later, hyperintensity of white matter on T2 is considered a symptom of gliosis. Clinically, progression of the diseases is associated with anatomic changes and correlates with the extent of the pial vascular anomaly, extent and severity of cerebral atrophy, and white matter abnormalities. A neonatal neuro-imaging work-up, using CT or MRI, may not demonstrate the pial anomaly and should be repeated after 6 to 12 months in an at-risk infant with V1 PWS. (authors)

  11. La temprana recepción de Max Weber en la sociología argentina (1930–1950

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    Alejandro Blanco

    2007-07-01

    Full Text Available Max Weber’s thought was known in Argentina’s scholarly milieu in the years preceding the first translations into Spanish of his works, Historia Económica General and Economía y Sociedad, both edited by Fondo de Cultura Económica in 1942 and 1944 respectively. The first references to Weber ´s oeuvre appeared at the beginning of the ‘30s in an intellectual context characterized by the revolt against positivism and the diffusion of German thinking in general, and its sociological thinking, in particular. During that period, sociology was an emerging field and sociologists faced the task of justifying their practice and kinds of approach. Nevertheless, there were different views of the discipline each of which articulating aspecific interpretation of Weber ´s contribution. Given this situation, we may wonder, who was Weber for argentine readers? Which themes of his vast work were selected in the context of local intellectual concerns? In sum, this paper explores the different interpretations of Max Weber ideas showing how these became articulated with the different conceptions of the discipline struggling for supremacy in a given, still incipient, disciplinary field.

  12. Feng shui väärtus on vaimujõus / Marika Tomberg ; komment. Lea Eermann, komment. Rein Weber

    Index Scriptorium Estoniae

    Tomberg, Marika

    1999-01-01

    Feng shui järgi korraldatud Lea Eermanni kodust Nõmmel. Feng shui- ja geobioloogia-alase nõustamisega tegelev arhitekt Rein Weber keskkonna mõjust tervisele, magamistoast. Enda ja maja kaitsmisest halbade mõjude eest. 10 illustratsiooni

  13. Diffusion tensor imaging and magnetic resonance spectroscopy of the brain in a patient with Sturge-Weber syndrome

    NARCIS (Netherlands)

    Sijens, P. E.; Gieteling, E. W.; Meiners, L. C.; Sival, D. A.; Potze, J. H.; Irwan, R.; Oudkerk, M.

    2006-01-01

    Quantitative brain MR spectroscopy (MRS) and diffusion tensor imaging (DTI) were used to characterize one patient with Sturge-Weber syndrome. Choline increases and N-acetylaspartate decreases were observed in pathologic frontal gray matter tissue compared to contralateral unaffected brain tissue wit

  14. A relação entre Democracia e Burocracia nos escritos políticos de Max Weber

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    José Cleyton Neves Lopes

    2011-08-01

    Full Text Available Max Weber foi precursor em apresentar as características e as consequências do processo de burocratização nas esferas sociais, sobretudo, no Estado. Em relação à democracia, Weber não deixou uma definição explícita em seus escritos, no entanto, com frequência a concepção de democracia como método para eleger líderes seja remetida a ele. O presente artigo tem como objetivo geral analisar a relação que Weber estabeleceu entre a democracia e a burocracia, dois conceitos que se entrecruzaram em vários de seus textos como fenômenos inerentes à sociedade moderna e ao processo de racionalização. Debruçarmo-nos sobre os escritos teóricos de Weber para os estudos ligados à burocracia é fundamental para compreendermos o funcionamento dos Estados modernos, assim como esmiuçar a concepção weberiana acerca da democracia. Concepção, esta, que se tornou hegemônica nas últimas décadas e que vem sendo contestada pelos movimentos populares que almejam participar de maneira mais direta nas decisões político-administrativas do Estado.

  15. RELATIONSHIPS BETWEEN THE SOCIAL ETHICS OF LUTERO AND THE CONCEPTION OF WEBER ON THE PROTESTANT ETHICS IN THE EDUCATIONAL CONTEXT

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    ALVORI AHLERT

    2007-07-01

    Full Text Available This text has as objective to understand the differences between the social ethics of Luther and the conceptions on the protestant ethics developed by Max Weber. The lutheran social ethics do not enroll in the religious ascetism of the pietism and in the ethical vision of the calvinist protestantism of the analysis of Max Weber on the protestant ethics. The thesis of Weber does not allow to credit to the social ethics of Luther bonds with the spirit of the development of the capitalism. The proper Weber, in moment, believes that the spirit of the capitalism if must the influences of the Reformation Lutheran or that the capitalism as system is a product of the Reformation. Therefore, a conception of lutheran ethics, established in the social ethics of Luther, remains as important instrument of critical in a society in which the human being comes losing its ethical referent and its citizencommunitarian base for the absence of the practical learning of these values, for being it delivers to the individualism and he process of coisificação accomplished for the industrial capitalism and its current marketing face that an limited citizenship imposes the majority of the population of the planet, lead for those that they control the economy and the politics (the money and the power and for the ethics of the market.

  16. Feng shui väärtus on vaimujõus / Marika Tomberg ; komment. Lea Eermann, komment. Rein Weber

    Index Scriptorium Estoniae

    Tomberg, Marika

    1999-01-01

    Feng shui järgi korraldatud Lea Eermanni kodust Nõmmel. Feng shui- ja geobioloogia-alase nõustamisega tegelev arhitekt Rein Weber keskkonna mõjust tervisele, magamistoast. Enda ja maja kaitsmisest halbade mõjude eest. 10 illustratsiooni

  17. Excess entropy and crystallization in Stillinger-Weber and Lennard-Jones fluids

    Science.gov (United States)

    Dhabal, Debdas; Nguyen, Andrew Huy; Singh, Murari; Khatua, Prabir; Molinero, Valeria; Bandyopadhyay, Sanjoy; Chakravarty, Charusita

    2015-10-01

    Molecular dynamics simulations are used to contrast the supercooling and crystallization behaviour of monatomic liquids that exemplify the transition from simple to anomalous, tetrahedral liquids. As examples of simple fluids, we use the Lennard-Jones (LJ) liquid and a pair-dominated Stillinger-Weber liquid (SW16). As examples of tetrahedral, water-like fluids, we use the Stillinger-Weber model with variable tetrahedrality parameterized for germanium (SW20), silicon (SW21), and water (SW23.15 or mW model). The thermodynamic response functions show clear qualitative differences between simple and water-like liquids. For simple liquids, the compressibility and the heat capacity remain small on isobaric cooling. The tetrahedral liquids in contrast show a very sharp rise in these two response functions as the lower limit of liquid-phase stability is reached. While the thermal expansivity decreases with temperature but never crosses zero in simple liquids, in all three tetrahedral liquids at the studied pressure, there is a temperature of maximum density below which thermal expansivity is negative. In contrast to the thermodynamic response functions, the excess entropy on isobaric cooling does not show qualitatively different features for simple and water-like liquids; however, the slope and curvature of the entropy-temperature plots reflect the heat capacity trends. Two trajectory-based computational estimation methods for the entropy and the heat capacity are compared for possible structural insights into supercooling, with the entropy obtained from thermodynamic integration. The two-phase thermodynamic estimator for the excess entropy proves to be fairly accurate in comparison to the excess entropy values obtained by thermodynamic integration, for all five Lennard-Jones and Stillinger-Weber liquids. The entropy estimator based on the multiparticle correlation expansion that accounts for both pair and triplet correlations, denoted by Strip, is also studied. Strip is a

  18. Vision for action and perception elicit dissociable adherence to Weber's law across a range of 'graspable' target objects.

    Science.gov (United States)

    Heath, Matthew; Manzone, Joseph; Khan, Michaela; Davarpanah Jazi, Shirin

    2017-07-18

    A number of studies have reported that grasps and manual estimations of differently sized target objects (e.g., 20 through 70 mm) violate and adhere to Weber's law, respectively (e.g., Ganel et al. 2008a, Curr Biol 18:R599-R601)-a result interpreted as evidence that separate visual codes support actions (i.e., absolute) and perceptions (i.e., relative). More recent work employing a broader range of target objects (i.e., 5 through 120 mm) has laid question to this claim and proposed that grasps for 'larger' target objects (i.e., >20 mm) elicit an inverse relationship to Weber's law and that manual estimations for target objects greater than 40 mm violate the law (Bruno et al. 2016, Neuropsychologia 91:327-334). In accounting for this finding, it was proposed that biomechanical limits in aperture shaping preclude the application of Weber's law for larger target objects. It is, however, important to note that the work supporting a biomechanical account may have employed target objects that approached -or were beyond-some participants' maximal aperture separation. The present investigation examined whether grasps and manual estimations differentially adhere to Weber's law across a continuous range of functionally 'graspable' target objects (i.e., 10,…,80% of participant-specific maximal aperture separation). In addition, we employed a method of adjustment task to examine whether manual estimation provides a valid proxy for a traditional measure of perceptual judgment. Manual estimation and method of adjustment tasks demonstrated adherence to Weber's law across the continuous range of target objects used here, whereas grasps violated the law. Thus, results evince that grasps and manual estimations of graspable target objects are, respectively, mediated via absolute and relative visual information.

  19. Photodynamic Therapy for Diffuse Choroidal Hemangioma in Sturge-Weber Syndrome

    Directory of Open Access Journals (Sweden)

    Sílvia Monteiro

    2014-01-01

    Full Text Available Purpose. To report the treatment outcome of photodynamic therapy with verteporfin (PDT for exudative retinal detachment (RD associated with diffuse choroidal hemangioma in Sturge-Weber syndrome (SWS. Methods. An interventional case report of a 10-year-old girl with SWS who developed an exudative RD (visual acuity hand motions that was treated with PDT. She was treated with a first session of multispot PDT. Posteriorly, a choroidotomy for drainage of subretinal fluid was created, combined with an intravitreal injection of gas (SF6 and cryoapplication. Finally, a second session of PDT was applied. Results. Subretinal fluid resolved over a period of one year and visual acuity increased to 20/125. Conclusions. PDT is an effective therapeutic option for exudative RD associated with diffuse choroidal hemangioma.

  20. Harm A. Weber academic center, post-occupancy building performance and comfort perceptions

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    Keelan P. Kaiser

    2012-10-01

    Full Text Available The Weber Center at Judson University, a mixed mode, naturally ventilated building in a continental climate, has been in operation for just over a year, with initial occupancy in August 2007. This paper compares the design objectives and building performance expectations against the first yearof actual energy consumption in a first of a series of post-occupancy evaluations. The paper contrasts the building performance with general user satisfaction and perceptions of comfort through a post occupancy evaluation of user surveys and interviews. The innovations involved in this building, particularly mechanical strategies atypical in contemporary practice within this climate and region, have introduced some interesting problems that have been documented in the post-occupancy evaluation process, while confirming many of the original intentions of the design.

  1. Immigration and discrimination: Towards a conceptual implementation of Max Weber's notion of meaning

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    Rafael Arriaga Martínez

    2015-07-01

    Full Text Available In this paper, we examine the heuristic utility of Weber's notion of meaning to explain the perception of immigrants in the United States, particularly undocumented immigrants. The methodological rule implying that the understanding of the meaning of such perceptions can only be achieved through the notion of structure and the theory of socialization, as presented by Jorge Bustamante, is contested. We argue that with the notion of meaning comes into play the conception of an individual motivated by subjective reasons when perceiving immigrants as X or Y, and that those reasons, far from being justifications, have a real, objective basis. We advance a comprehensive framework of law SB1070 to attempt to elucidate some of the reasons that motivate involved actors’ approval or disapproval of this law.

  2. A case of overlapping of Sturge Weber syndrome-Klippel Trenaunay syndrome and ophthalmological findings

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    Ersin Aydın

    2016-12-01

    Full Text Available Sturge-Weber syndrome (SWS is a neurocutaneous syndrome characterized by facial port wine stains, vascular lesions in the ipsilateral brain and meninges, and glaucoma. Klippel-Trenaunay syndrome (KTS is a rare congenital malformation associated with cutaneous vascular malformation, bony or soft tissue hypertrophy and venous varicosities in the affected limb. Although some cases have been reported in the literature, an overlap between these two phakomatoses is extremely rare and they have systemic and ocular affects. Here, we present a case showing the properties of both SWS and KTS and having interesting ophthalmological findings. This case is presented to emphasize that eye related complications might also be seen in these syndromes.

  3. Durkheim e Weber: inspiração para uma nova sociabilidade, o neotribalismo

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    Sílvia Jurema Quaresma

    2005-01-01

    Full Text Available Este artigo tem como principal finalidade ampliar um pouco mais o conhecimento sobre o conceito de neotribalismo idealizado pelo sociólogo francês Michel Maffesoli. Este autor considera o neotribalismo como uma das características da pós-modernidade, porém estas características nos fazem retornar as idéias de Durkheim e Weber. Sendo assim, neste artigo pretendemos mostrar como Maffesoli introduz a nova concepção de sociabilidade das tribos, mas apoiada nos clássicos da Sociologia. Também expomos algumas idéias de autores como: Anthony Giddens, Boaventura de Souza Santos, Edgar Morin referentes ao paradigma da modernidade.

  4. Weber e Schumpeter: a ação econômica do empreendedor

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    Ana Cristina Braga Martes

    2010-06-01

    Full Text Available Weber and Schumpeter: the Economic action of the entrepreneur. Is there any specificity to be raised in the relations established between entrepreneurs and institutions? Recently, the term entrepreneurship is being widely employed. Enterprising is not anymore a restricted activity to the private sector, but also the Third Sector and the Public Administration. It does not only circumscribe the space of innovation, but also of the adapting changes. In this sense, such elastic concept runs the risk to lose consistency. It seems to be appropriate, therefore, to rescue the meaning that many authors, considered classic in Social Sciences, had attributed to the subject, to show that, although deep socioeconomic transformations occurred since Schumpeter wrote the Theory of the Economic Development, is still necessary to emphasize a basic dimension of the enterprising action: resistance and institutional conflict.

  5. Oscillation and non-oscillation criterion for Riemann–Weber type half-linear differential equations

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    Petr Hasil

    2016-08-01

    Full Text Available By the combination of the modified half-linear Prüfer method and the Riccati technique, we study oscillatory properties of half-linear differential equations. Taking into account the transformation theory of half-linear equations and using some known results, we show that the analysed equations in the Riemann–Weber form with perturbations in both terms are conditionally oscillatory. Within the process, we identify the critical oscillation values of their coefficients and, consequently, we decide when the considered equations are oscillatory and when they are non-oscillatory. As a direct corollary of our main result, we solve the so-called critical case for a certain type of half-linear non-perturbed equations.

  6. [Establishment and optimization of the regeneration system for common dandelion (Taraxacum officinale Weber)].

    Science.gov (United States)

    Chen, Hua; Li, Ping; Liu, Jing; Li, Yin-Xin

    2005-03-01

    A protocol is presented for direct and indirect regeneration of common dandelion (Taraxacum officinale Weber) from leaf and petiole explants. Multiple shoots were obtained on MS medium containing 0.2 mg/L IAA and 1 mg/L TDZ. For indirect regeneration, fragile calli were obtained from leaf and petiole explants on MS medium supplemented with 0.5 mg/L 2,4-D and 2.0 mg/L 6-BA. Regenerated plantlets were obtained when these calli were cultured on MS medium containing 1.0 mg/L 6-BA. Random amplified polymorphic DNA (RAPD) analysis of nine regenerated plantlets revealed 61 scorable bands from 10 primers, including three specific bands.

  7. Critical Discourse Analysis, Description, Explanation, Causes: Foucault's Inspiration Versus Weber's Perspiration

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    Gary Wickham

    2007-05-01

    Full Text Available The FOUCAULTian governmentality approach, in relying on a teleology—the ultimate purpose of human endeavour is the quest for ever-growing human reason, a reason that is the universal basis of moral judgements, especially moral judgements about political and legal actions—leads not to description, explanation and the possible identification of causes, but to critique, to the inappropriate conflation of, on the one hand, description, explanation and the identification of causes with, on the other, political criticisms sourced in the teleology. Drawing on some of WEBER's methodological insights, an argument is developed that critical discourse analysis, in taking on the FOUCAULTian approach, gives up the best traditions of description, explanation and the identification of causes in favour of the expression, in many different forms, of the teleology. URN: urn:nbn:de:0114-fqs070246

  8. Construction and application of variations on the cylindrical gravitational waves of Weber, Wheeler, and Bonnor

    Science.gov (United States)

    Mishima, Takashi; Tomizawa, Shinya

    2017-07-01

    To clarify certain nonlinear properties of strong gravitational field, we investigate cylindrically symmetric gravitational waves that are localized as regular wave packets in the space of radial and time coordinates. The waves are constructed by applying a certain kind of harmonic mapping method to the seed solutions with linear polarization, which are generalizations of the solution representing a cylindrical gravitational pulse wave discussed by Weber, Wheeler, and Bonnor. The solutions obtained here, though their form is rather simple, show occurrence of strong mutual conversion between a linear mode and a cross mode apparently. The single localized wave shows the conversion in the vicinity of the symmetric axis where the self-interaction is strengthened, and the collision between multiple waves also causes the conversion. These phenomena can be thought to be the emergence of genuine nonlinearity that the Einstein gravity holds. Finally we discuss a simple, but interesting application of the solutions to the case of the Einstein-Maxwell system.

  9. Summer sudden Na number density enhancements measured with the ALOMAR Weber Na Lidar

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    D. Heinrich

    2008-05-01

    Full Text Available We present summer Na-densities and atmospheric temperatures measured 80 to 110 km above the Arctic Lidar Observatory for Middle Atmosphere Research (ALOMAR. The Weber Na Lidar is part of ALOMAR, located at 69° N in Norway, 150 km north of the Arctic Circle. The sun does not set here during the summer months, and measurements require a narrowband Faraday Anomalous Dispersion Optical Filter (FADOF.

    We discuss an observed sudden enhancement in the Na number density around 22:00 UT on 1 to 2 June 2006. We compare this observation with previous summer measurements and find a frequent appearance of Na number density enhancements near local midnight. We describe the time of appearance, the altitude distribution, the duration and the strength of these enhancements and compare them to winter observations. We investigate possible formation mechanisms and, as others before, we find a strong link between these Na number density enhancements and sporadic E layers.

  10. Gravity Reduction View: A Radiographic Technique for the Evaluation and Management of Weber B Fibula Fractures

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    Lauren Ehrlichman

    2017-03-01

    Full Text Available Background: While various radiographic parameters and application of manual/gravity stress have been proposed to elucidate instability for Weber B fibula fractures, the prognostic capability of these modalities remains unclear. Determination of anatomic positioning of the mortise is paramount. We propose a novel view, the Gravity Reduction View (GRV, which helps elucidate non-anatomic positioning and reducibility of the mortise.Methods: The patient is positioned lateral decubitus with the injured leg elevated on a holder with the fibula directed superiorly. The x-ray cassette is placed posterior to the heel, with the beam angled at 15˚ of internal rotation to obtain a mortise view. Our proposed treatment algorithm is based upon the measurement of the medial clear space (MCS on the GRV versus the static mortise view (and in comparison to the superior clear space (SCS and is based on reducibility of the MCS. A retrospective review of patients evaluated utilizing the GRV was performed.Results: 26 patients with Weber B fibula fractures were managed according to this treatment algorithm. Mean age was 50.57 years old (range: range:18-81, SD=19. 17 patients underwent operative treatment and 9 patients were initially treated nonoperatively. 2 patients demonstrated late displacement and were treated surgically. Using this algorithm, at a mean follow-up of 26 weeks, all patients had a final MCS that was less than the SCS (final mean MCS 2.86 mm vs. mean SCS of 3.32 indicating effectiveness of the treatment algorithm.Conclusion: The GRV is a novel radiographic view in which deltoid competency, reducibility and initial positioning of the mortise are assessed by comparing a static mortise view with the appearance of the mortise on the GRV. We have developed a treatment algorithm based on the GRV and have found it to be useful in guiding treatment and successful at achieving anatomic mortise alignment.

  11. EL Agave tequilana Weber Y LA PRODUCCIÓN DE TEQUILA EL Agave tequilana Weber Y LA PRODUCCIÓN DE TEQUILA

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    J. E. Barboza Corona

    2012-02-01

    Full Text Available Tequila is one of the most famous drinks on a national and worldwide level. It is obtained from the Agave tequilana Weber plant, better known as Agave Azul. The part of the plant used for making tequila is the core. Once the cores are cut, they are taken away to an oven where a cooking operation is made, this with the object of degrading the complex sugars of the core into simple sugars that can be used as yeasts in the fermentation process. The principal complex carbohydrate present in agave is inulin, which is a polymeric fructose with a terminal glucose residue. When the inulin is degraded by action of the juice´s acidity and the heat of cooking, fructose and glucose are obtained. Next, the cores are milled to extract the juice which is placed in vats and inoculated with a yeast culture of Saccharomyces cerevisiae, responsible for the fermentation of the sugars present in the juice. After fermentation, the juice is distilled to obtain ethanol and vinazes (a mixture of dead yeasts, nonfermentable sugars, and minerals. Tequila can be bottled immediately after distillation or it can be aged in the wooden casks wich confer characteristic flavor and color to tequila.El tequila es una de las bebidas más famosas a nivel nacional y mundial. Se obtiene de la planta Agave tequilana Weber, mejor conocido como Agave azul. La parte de la planta que es utilizada para la elaboración del tequila es la piña. Una vez que las piñas son cortadas, se llevan a un horno en donde se realiza la operación del cocimiento; éste tiene la finalidad de degradar los azúcares complejos presentes en la piña en azúcares simples para que puedan ser utilizados por la levadura en la operación de fermentación. El principal carbohidrato complejo presente en el agave es la inulina, el cual es un polímero de fructosa con un residuo terminal de glucosa. Cuando la inulina se degrada por la acción de la acidez del jugo y del calor en el cocimiento, se obtienen

  12. O gênero Rhipsalis Gärtner (Cactaceae, no Estado de São Paulo I: espécies com ramos cilíndricos ou subcilíndricos The genus Rhipsalis Gärtner (Cactaceae in the State of São Paulo-I: species with cylindrical or subcilindrical joints

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    Julio Antonio Lombardi

    1991-12-01

    Full Text Available Rhipsalis Gärtner é um gênero de Cactaceae de hábito epífita ou rupícola, de ampla distribuição nas Américas do Sul e Central, atingindo inclusive a África tropical e ilhas do Oceano Índico. Este trabalho procurou caracterizar morfologicamente as espécies do gênero Rhipsalis que ocorrem no Estado de São Paulo, possibilitando deste modo o reconhecimento das espécies. Entre as espécies do gênero que possuem artículos cilíndricos e subcilíndricos foram reconhecidas 16 espécies ocorrentes no Estado de São Paulo, incluindo uma espécie nova, R. spinescens Lombardi, além de uma espécie de determinação incerta.Rhipsalis Gärtner is a genus of epiphytic or rupicolous Cactaceae, with a wide distribution in South and Central America. It also occurs in tropical Africa and the islands of the Indie Ocean. This study describes the morphology of the species ocurring in São Paulo state (Brazil. A total of 16 species with cylindrical and subcylindrical joints were recognized for São Paulo state, including an new species R. spinescens Lombardi, and another of uncertain affinity.

  13. Desvendando a religião e as religiões mundiais em Max Weber (Revealing religion and the world religions in Max Weber - DOI: 10.5752/P.2175-5841.2009v7n14p136

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    Arilson Silva Oliveira

    2009-10-01

    Full Text Available Apresentamos Max Weber como um dos sociólogos e historiadores mais importantes dentre aqueles que se dedicaram ao estudo do fenômeno religioso. Na verdade, é possível afirmar que a análise da religião compreende um dos aspectos mais fundamentais de sua obra sócio-histórica. De modo geral, esse tema aparece em seus textos de duas maneiras diferentes, quais sejam: enquanto um objeto analisado em sua singularidade e enquanto uma manifestação social que influencia de maneira significativa os demais aspectos da vida comunitária. Aqui, observamos como ele muniu-se de um método particular e o utilizou como parâmetro para compreender historicamente a religião. Ao se debruçar sobre as religiões mundiais (confucionismo-taoísmo, judaísmo-cristianismo e hinduísmo-budismo, Weber estuda a racionalização cultural de suas cosmovisões. Todavia, para ele, a influência da religião sobre a vida prática varia muito segundo o caminho da salvação/libertação que é prescrito e segundo a qualidade psíquica (ou imaginada da salvação que se pretende alcançar. Palavras-chave: Max Weber; Religião; Religiões Mundiais; Racionalização.   AbstractWe present Max Weber as one of the most important sociologists and historians among those who dedicated themselves to the study of the religious phenomenon. Actually, it is possible to say that the analysis of religion involves one of the most fundamental aspects of his socio-historical work. As a whole, this subject appears in his texts in two different forms, i.e., as an analyzed object in its particularities, and as a social manifestation which influences, in a significant way, the other aspects of communitarian life. Here, we observe how he equipped himself with a particular method, rescued Kantian rationality and applied it as a parameter to historically understand religion. While he dedicated himself to study world religions (Confucianism-Taoism, Judaism-Christianity, and Hinduism

  14. The Power of the Stage and the Dignity of the Academic Calling in Imperial Germany: The Writings of Max Weber on University Problems

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    Minerva, 1973

    1973-01-01

    Contains Max Weber's writings on the problems of the German university in the face of political and bureaucratic authority and on the fundamental principles of university autonomy and academic freedom. (PG)

  15. [The Concept of Typology in Psychiatry in the Context of Historical Contributions of Max Weber and Karl Jaspers].

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    Jäger, M; Becker, T; Wigand, M E

    2016-08-01

    Against the background of Max Weber's and Karl Jaspers' outstanding historical contributions to the conceptual development of different typologies, the importance of a psychiatric typology is examined. The term "ideal type" was introduced into social science by Weber as an analytical construct to describe and classify cultural phenomena. This concept was adopted for the psychiatric context by Jaspers who proposed to establish a typological system in the field of psychotic disturbances without an organic correlate. He emphasized the importance of the course of psychopathological symptoms for such a typological system. The concept of typology can be regarded as a promising heuristic approach in psychiatry, providing a classification system for complex psychopathological symptoms. Even though several historic typologies exist in psychopathology, their usefulness in the fields of therapy and prognosis needs to be critically assessed. Also, new typologies will have to be developed, taking into account neurobiological knowledge now available.

  16. Arte, erotismo y redención, la esfera estética en el pensamiento de Max Weber

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    Ana María Rodríguez Sierra

    2016-01-01

    La prolífica obra de Max Weber ha sido estudiada ampliamente, sin embargo, la concepción que tenía del arte, aunque presente en sus escritos, no ha sido indagada. En Sociología de la religión Weber aborda la esfera estética de un modo que vale la pena conocer y destacar, allí se presenta una concepción filosófica del arte, amplia y ahistórica, en la que el arte y el erotismo se ligan y se muestran como medios de redención en un mundo desencantado. Este artículo expone la filosofía del arte qu...

  17. Arte, erotismo y redención, la esfera estética en el pensamiento de Max Weber

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    Ana María Rodríguez Sierra

    2016-07-01

    Full Text Available La prolífica obra de Max Weber ha sido estudiada ampliamente, sin embargo, la concepción que tenía del arte, aunque presente en sus escritos, no ha sido indagada. En Sociología de la religión Weber aborda la esfera estética de un modo que vale la pena conocer y destacar, allí se presenta una concepción filosófica del arte, amplia y ahistórica, en la que el arte y el erotismo se ligan y se muestran como medios de redención en un mundo desencantado. Este artículo expone la filosofía del arte que subyace en los últimos textos del científico social alemán.

  18. Jaulas, máquinas y laberintos (Imágenes de la burocracia en Kafka, Musil y Weber

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    José M. González García

    2007-01-01

    Full Text Available Este artículo se propone abordar el problema de la burocracia desde las visiones críticas de Kafka y Weber. Para ello, se desarrolla la metáfora de la burocracia como máquina laberíntica que opera como entidad administrativa superior en el contexto de las sociedades modernas. El paralelo entre la obra de Kafka y Weber permite notar también la convergencia de la literatura y la sociología, lugares donde es posible encontrar no sólo un determinado espíritu de época, sino fundamentalmente una imagen lúcidamente crítica sobre el mismo.

  19. Weber e o desencantamento do mundo: uma interlocução com o pensamento de Nietzsche

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    Renarde Freire Nobre

    2006-01-01

    Full Text Available Dans cet article, on oppose la pensée de Max Weber à celle de Friedrich Nietzsche à propos de l'Occident moderne, en prenant comme point de départ les notions de "mort de Dieu" et de "désenchantement du monde". On y examine leurs affinités et différences, surtout sous l'angle du diagnostic de Weber sur la "culture de la technique" et ses effets inéluctables sur la subjectivité. L'hypothèse centrale, c'est que, malgré les points de contact qu'on peut et qu'on doit établir entre ces deux penseurs, il reste un fossé infranchissable, dû surtout à la reconnaissance des pouvoirs de la raison et à la vue du monde culturel construites sous la direction des orientations conscientes.

  20. Comparison of liquid-state anomalies in Stillinger-Weber models of water, silicon, and germanium

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    Dhabal, Debdas; Chakravarty, Charusita; Molinero, Valeria; Kashyap, Hemant K.

    2016-12-01

    We use molecular dynamics simulations to compare and contrast the liquid-state anomalies in the Stillinger-Weber models of monatomic water (mW), silicon (Si), and germanium (Ge) over a fairly wide range of temperatures and densities. The relationships between structure, entropy, and mobility, as well as the extent of the regions of anomalous behavior, are discussed as a function of the degree of tetrahedrality. We map out the cascade of density, structural, pair entropy, excess entropy, viscosity, and diffusivity anomalies for these three liquids. Among the three liquids studied here, only mW displays anomalies in the thermal conductivity, and this anomaly is evident only at very low temperatures. Diffusivity and viscosity, on the other hand, show pronounced anomalous regions for the three liquids. The temperature of maximum density of the three liquids shows re-entrant behavior consistent with either singularity-free or liquid-liquid critical point scenarios proposed to explain thermodynamic anomalies. The order-map, which shows the evolution of translational versus tetrahedral order in liquids, is different for Ge than for Si and mW. We find that although the monatomic water reproduces several thermodynamic and dynamic properties of rigid-body water models (e.g., SPC/E, TIP4P/2005), its sequence of anomalies follows, the same as Si and Ge, the silica-like hierarchy: the region of dynamic (diffusivity and viscosity) anomalies encloses the region of structural anomalies, which in turn encloses the region of density anomaly. The hierarchy of the anomalies based on excess entropy and Rosenfeld scaling, on the other hand, reverses the order of the structural and dynamic anomalies, i.e., predicts that the three Stillinger-Weber liquids follow a water-like hierarchy of anomalies. We investigate the scaling of diffusivity, viscosity, and thermal conductivity with the excess entropy of the liquid and find that for dynamical properties that present anomalies there is no

  1. Lateral malleolus hook plate for comminuted Weber A and B fractures: A retrospective study

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    Fang Zhenhua

    2013-01-01

    Full Text Available Background: The goal of managing the comminuted fracture of lateral malleolus is to restore length, rotation and alignment which might be more challenging with extensive comminution around the area of the distal tip. The common osteosynthesis techniques such as the one-third tubular plate, tension band wiring, K-wires, screws, or intramedullary nail may be insufficient in cases with a comminuted lateral malleolus. The anatomical hook plate is an alternative implant in such cases. We present our results of the comminuted lateral malleolar fractures (Weber A, B, managed by open reduction and internal fixation (ORIF with an anatomical hook plate of lateral malleolus (Königsee Implant Company, Germany. Materials and Methods: We retrospectively reviewed 20 patients of comminuted fracture of distal lateral malleolus between 2008 and 2010. There were 12 males and 8 females, right side was involved in 18 patients and left in 2. The mean age was 51.9 years (range 18-75 years. The fractures were categorized by Denis-Weber classification type A (n=1, B1 (n=1, B2 (n=13 and B3 (n=5. Nineteen cases were of closed injury and one of open injury (Gustilo Anderson type II. These patients underwent ORIF with a lateral malleolus anatomical hook plate. Followup including radiographs and clinical examinations were performed. The American Orthopedic Foot and Ankle Society (AOFAS ankle hindfoot scores were documented at followups. Results: The mean followup was 21.4 months (range 16-27 months. The average AOFAS score was 94.3 (range 78-100 points. A stable anatomic reduction and bony union were obtained in all the cases. The average time was 3.1 months (range 2.5-4 months. Four cases had complications like posttraumatic osteoarthritis, hardware impingement and superficial wound infection. Conclusion: A reasonably good stability can be obtained in distal most comminuted fractures of lateral malleolus with a lateral malleolus anatomical hook plate. We believe this

  2. Sindrome de Sturge – Weber - Os síndromes raros também existem

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    Cátia Canelas

    2015-12-01

    Recorreu ao serviço de urgência por crises convulsivas tónico-clónicas generalizadas quase diárias desde há 1 mês. Ao exame físico o doente apresentava-se pouco colaborante mas hemodinamicamente estável. Ao nível da cabeça eram evidentes diversas alterações: macrocefalia, hipertrofia dos tecidos moles da face com manchas em vinho do porto exuberantes bilaterais com distribuição oftálmica, maxilar e mandibular do nervo trigémio, e hemangiomas conjuntivais bilaterais (Fig. 1. Ao exame neurológico apresentava hemiparesia esquerda grau 3/5 em ambos os membros. Realizou tomografia computorizada crânio-encefálica que mostrou atrofia do hemisfério encefálico direito com calcificação cortical de configuração giriforme de predomínio frontal e occipital e maior volume do plexo coroide do ventrículo lateral direito (Fig.2, aspetos descritos na literatura como característicos de SSW4. Analiticamente sem alterações nomeadamente da função tiroideia. O doente foi observado por oftalmologia tendo sido diagnosticado glaucoma bilateral com perda visual acentuada. Trata-se então de um caso de síndrome de Sturge-Weber tipo I (angiomas da face e das leptomeninges e glaucoma segundo a The Roach Scale, que por falta de seguimento médico apresentava as diversas complicações da síndrome não controladas, convulsões frequentes, perda visual acentuada, história de episódios semelhantes a AVC com hemiparésia sequelar, cefaleias, défice cognitivo e isolamento social. Apesar da forma de apresentação grave com sintomas desde a infância o diagnóstico foi estabelecido numa idade muito pouco comum. A síndrome de Sturge-Weber é uma entidade a ter presente no diagnóstico diferencial das manchas vinho do porto e das crises convulsivas. O diagnóstico precoce e o seguimento/vigilância médica apertada são as únicas formas de melhorar o prognóstico sombrio das manifestações e complicações desta síndrome que são verdadeiramente limitadoras de

  3. Seed reserve composition and mobilization during germination and early seedling establishment of Cereus jamacaru D.C. ssp. jamacaru (Cactaceae

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    Nara L.M. Alencar

    2012-09-01

    Full Text Available Cereus jamacaru, a Cactaceae found throughout northeast Brazil, is widely used as cattle food and as an ornamental and medicinal plant. However, there has been little information about the physiological and biochemical aspects involved in its germination. The aim of this study was to investigate its reserve mobilization during germination and early seedling growth. For this, C. jamacaru seeds were germinated in a growth chamber and collected at 0, 2, 4, 5, 6, 8 and 12 days after imbibition for morphological and biochemical analyses. Dry seeds had wrinkled seed coats and large, curved embryos. Lipids were the most abundant reserve, comprising approximately 55% and 65% of the dry mass for cotyledons and the hypocotylradicle axis, respectively. Soluble sugars and starch were the minor reserves, corresponding to approximately 2.2% of the cotyledons' dry mass, although their levels showed significant changes during germination. Soluble proteins corresponded to 40% of the cotyledons' dry mass, which was reduced by 81% at the final period of germination compared to dry seeds. C. jamacaru seed can be classified as an oil seed due to its high lipid content. Moreover, lipids were the main reserve mobilized during germination because their levels were strongly reduced after seed germination, while proteins were the second most utilized reserve in this process.Cereus jamacaru, uma cactácea encontrada comumente no nordeste brasileiro, é amplamente usada como planta forrageira e como ornamental e medicinal. No entanto, existem poucas informações sobre os aspectos fisiológicos e bioquímicos relacionados à sua germinação. O objetivo desse estudo foi avaliar a mobilização de reservas durante a germinação e o crescimento inicial de plântulas de C. jamacaru. Para isso, as sementes foram germinadas em câmaras de germinação e coletadas aos 0, 2, 4, 5, 6, 8 e 12 dias após a germinação para as análises fisiológicas e bioquímicas. As sementes

  4. Klippel Trenaunay Weber syndrome with unilateral polycystic kidney disease: a rare presentation

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    Shiv Charan

    2016-05-01

    Full Text Available Klippel Trenaunay Weber syndrome (KTWS is a rare disease characterized by hemihypertrophy, variceal enlargement of the veins, and arteriovenous (AV malformations. Renal involvement in KTWS is not known except in rare case reports. Herein, we present a case of KTWS with unilateral polycystic kidney. A 52-year-old male was admitted due to pain left lumbar region for the last three months. The physical findings were increased diameter and increased length of the left leg compared with the right one, diffuse variceal enlargements on left leg, portwine stain on left side on neck, thorax, abdomen, left upper limb and left lower limb and a few hemangiomatous lesions on the left leg. Radiographic findings were cystic lesions in the left kidney, varicose veins in left leg, and hypertrophy of the soft tissues of the proximal left leg. Color Doppler of left lower limb showed incompetence of the saphenofemoral junction. He was diagnosed to have KTWS with these findings. Renal function tests of the patient were in the normal range. Patient's only complain was left lumbar region pain, mild in intensity. Patient was managed symptomatically. [Int J Res Med Sci 2016; 4(5.000: 1760-1762

  5. Anesthetic management of a patient with Sturge-Weber syndrome undergoing oral surgery.

    Science.gov (United States)

    Yamashiro, Mikiko; Furuya, Hideki

    2006-01-01

    This case involves a possible complication of excessive bleeding or rupture of hemangiomas. Problems and anesthetic management of the patient are discussed. A 35-year-old man with Sturge-Weber syndrome was to undergo teeth extraction and gingivectomy. Hemangiomas covered his face and the inside of the oral cavity. We used intravenous conscious sedation with propofol and N2O-O2 to reduce the patient's emotional stress. It was previously determined that stress caused marked expansion of this patient's hemangiomas. Periodontal ligament injection was chosen as the local anesthesia technique. Teeth were extracted without excessive bleeding or rupture of hemangiomas, but the planned gingivectomies were cancelled. Deep sedation requiring airway manipulation should be avoided because there are possible difficulties in airway maintenance. Because this was an outpatient procedure, propofol was selected as the sedative agent primarily because of its rapid onset and equally rapid recovery. Periodontal ligament injection with 2% lidocaine containing 1: 80,000 epinephrine was chosen for local anesthesia. Gingivectomy was cancelled because hemostasis was challenging. As part of preoperative preparation, equipment for prompt intubation was available in case of rupture of the hemangiomas. The typically seen elevation of blood pressure was suppressed under propofol sedation so that expansion of the hemangiomas and significant intraoperative bleeding was prevented. Periodontal ligament injection as a local anesthetic also prevented bleeding from the injection site.

  6. Spiking Cortical Model Based Multimodal Medical Image Fusion by Combining Entropy Information with Weber Local Descriptor.

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    Zhang, Xuming; Ren, Jinxia; Huang, Zhiwen; Zhu, Fei

    2016-09-15

    Multimodal medical image fusion (MIF) plays an important role in clinical diagnosis and therapy. Existing MIF methods tend to introduce artifacts, lead to loss of image details or produce low-contrast fused images. To address these problems, a novel spiking cortical model (SCM) based MIF method has been proposed in this paper. The proposed method can generate high-quality fused images using the weighting fusion strategy based on the firing times of the SCM. In the weighting fusion scheme, the weight is determined by combining the entropy information of pulse outputs of the SCM with the Weber local descriptor operating on the firing mapping images produced from the pulse outputs. The extensive experiments on multimodal medical images show that compared with the numerous state-of-the-art MIF methods, the proposed method can preserve image details very well and avoid the introduction of artifacts effectively, and thus it significantly improves the quality of fused images in terms of human vision and objective evaluation criteria such as mutual information, edge preservation index, structural similarity based metric, fusion quality index, fusion similarity metric and standard deviation.

  7. Spiking Cortical Model Based Multimodal Medical Image Fusion by Combining Entropy Information with Weber Local Descriptor

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    Xuming Zhang

    2016-09-01

    Full Text Available Multimodal medical image fusion (MIF plays an important role in clinical diagnosis and therapy. Existing MIF methods tend to introduce artifacts, lead to loss of image details or produce low-contrast fused images. To address these problems, a novel spiking cortical model (SCM based MIF method has been proposed in this paper. The proposed method can generate high-quality fused images using the weighting fusion strategy based on the firing times of the SCM. In the weighting fusion scheme, the weight is determined by combining the entropy information of pulse outputs of the SCM with the Weber local descriptor operating on the firing mapping images produced from the pulse outputs. The extensive experiments on multimodal medical images show that compared with the numerous state-of-the-art MIF methods, the proposed method can preserve image details very well and avoid the introduction of artifacts effectively, and thus it significantly improves the quality of fused images in terms of human vision and objective evaluation criteria such as mutual information, edge preservation index, structural similarity based metric, fusion quality index, fusion similarity metric and standard deviation.

  8. [Formula: see text]Intellectual and adaptive functioning in Sturge-Weber Syndrome.

    Science.gov (United States)

    Kavanaugh, Brian; Sreenivasan, Aditya; Bachur, Catherine; Papazoglou, Aimilia; Comi, Anne; Zabel, T Andrew

    2016-01-01

    The present study examined the intellectual and adaptive functioning in a sample of children and young adults with Sturge-Weber Syndrome (SWS). A total of 80 research participants from a SWS study database underwent full neurological evaluation as part of their participation or concurrent medical care. Twenty-nine of the participants received neuropsychological evaluations. Analyses indicated no significant demographic or neurological differences between those who did and did not receive neuropsychological evaluations. Overall, the neuropsychological evaluation sample displayed significantly lower functioning relative to published normative data across domains of intellectual and adaptive functioning. Thirty-two percent of the sample displayed impaired performance (standard score ≤ 75) in intellectual functioning and 58% displayed impaired performance in adaptive functioning. Hemiparesis status independently predicted overall adaptive functioning while seizure frequency independently predicted overall intellectual functioning. Younger participants displayed significantly higher (more intact) ratings in adaptive functioning compared to older participants, specifically in overall adaptive functioning, motor skills, and community living skills. A composite measure of neurological status (SWS-NRS) incorporating seizure and hemiparesis status effectively distinguished between individuals with impaired or nonimpaired adaptive and intellectual functioning and showed promise as a screening method for identifying individuals with more involved intellectual and/or adaptive needs.

  9. Leveraging a Sturge-Weber Gene Discovery: An Agenda for Future Research.

    Science.gov (United States)

    Comi, Anne M; Sahin, Mustafa; Hammill, Adrienne; Kaplan, Emma H; Juhász, Csaba; North, Paula; Ball, Karen L; Levin, Alex V; Cohen, Bernard; Morris, Jill; Lo, Warren; Roach, E Steve

    2016-05-01

    Sturge-Weber syndrome (SWS) is a vascular neurocutaneous disorder that results from a somatic mosaic mutation in GNAQ, which is also responsible for isolated port-wine birthmarks. Infants with SWS are born with a cutaneous capillary malformation (port-wine birthmark) of the forehead or upper eyelid which can signal an increased risk of brain and/or eye involvement prior to the onset of specific symptoms. This symptom-free interval represents a time when a targeted intervention could help to minimize the neurological and ophthalmologic manifestations of the disorder. This paper summarizes a 2015 SWS workshop in Bethesda, Maryland that was sponsored by the National Institutes of Health. Meeting attendees included a diverse group of clinical and translational researchers with a goal of establishing research priorities for the next few years. The initial portion of the meeting included a thorough review of the recent genetic discovery and what is known of the pathogenesis of SWS. Breakout sessions related to neurology, dermatology, and ophthalmology aimed to establish SWS research priorities in each field. Key priorities for future development include the need for clinical consensus guidelines, further work to develop a clinical trial network, improvement of tissue banking for research purposes, and the need for multiple animal and cell culture models of SWS.

  10. Orofacial manifestation of Sturge-Weber syndrome: A case report with review

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    Mandeep Kaur

    2012-01-01

    Full Text Available Sturge-Weber syndrome (SWS, sometimes referred to as encephalotrigeminal angiomatosis, is a rare congenital neurological and skin disorder. It is one of the phakomatoses which is often associated with port-wine stains of the face, glaucoma, seizures, mental retardation, and ipsilateral leptomeningeal angioma. It is characterized by proliferation of arteries of the brain, resulting in multiple angiomas that occur on the same side due to arteriovenous malformations. Normally, only one side of the head is affected and mainly results from the errors in both the mesodermal and ectodermal development. Here, we report a rare case of SWS having oral and facial manifestations, where an 8-year-old boy had actually come for treatment of swollen gums, and on examination, we found that he had typical signs and symptoms of this rare developmental anomaly. The main purpose of this publication is to make the clinician aware of the oral manifestations that are seen in the patients with SWS and also to lay stress on the importance of radiographs in the diagnosis of this syndrome.

  11. A Case of Newly Diagnosed Klippel Trenaunay Weber Syndrome Presenting with Nephrotic Syndrome

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    Egemen Cebeci

    2015-01-01

    Full Text Available Klippel Trenaunay Weber syndrome (KTWS is a rare disease characterized by hemihypertrophy, variceal enlargement of the veins, and arteriovenous (AV malformations. Renal involvement in KTWS is not known except in rare case reports. Herein, we present a case of KTWS with nephrotic syndrome. A 52-year-old male was admitted due to dyspnea and swelling of the body for the last three months. The pathological physical findings were diffuse edema, decreased lung sounds at the right basal site, increased diameter and decreased length of the left leg compared with the right one, diffuse variceal enlargements, and a few hemangiomatous lesions on the left leg. The pathological laboratory findings were hypoalbuminemia, hyperlipidemia, increased creatinine level (1.23 mg/dL, and proteinuria (7.6 g/day. Radiographic pathological findings were cystic lesions in the liver, spleen, and kidneys, splenomegaly, AV malformation on the left posterolateral thigh, and hypertrophy of the soft tissues of the proximal left leg. He was diagnosed to have KTWS with these findings. Renal biopsy was performed to determine the cause of nephrotic syndrome. The pathologic examination was consistent with focal segmental sclerosis (FSGS. He was started on oral methylprednisolone at the dosage of 1 mg/kg and began to be followedup in the nephrology outpatient clinic.

  12. Possible dendritic contribution to unimodal numerosity tuning and Weber-Fechner law-dependent numerical cognition

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    Kenji Morita

    2009-08-01

    Full Text Available Humans and animals are known to share an ability to estimate or compare the numerosity of visual stimuli, and this ability is considered to be supported by the cortical neurons that have unimodal tuning for numerosity, referred to as the numerosity detector neurons. How such unimodal numerosity tuning is shaped through plasticity mechanisms is unknown. Here I propose a testable hypothetical mechanism based on recently revealed features of the neuronal dendrite, namely, cooperative plasticity induction and nonlinear input integration at nearby dendritic sites, on the basis of the existing proposal that individual visual stimuli are represented as similar localized activities regardless of the size or the shape in a cortical region in the dorsal visual pathway. Intriguingly, the proposed mechanism naturally explains a prominent feature of the numerosity detector neurons, namely, the broadening of the tuning curve in proportion to the preferred numerosity, which is considered to underlie the known Weber-Fechner law-dependent accuracy of numerosity estimation and comparison. The simulated tuning curves are less sharp than reality, however, and together with the evidence from human imaging studies that numerical representation is a distributed phenomenon, it may not be likely that the proposed mechanism operates by itself. Rather, the proposed mechanism might facilitate the formation of hierarchical circuitry proposed in the previous studies, which includes neurons with monotonic numerosity tuning as well as those with sharp unimodal tuning, by serving as an efficient initial condition.

  13. Optimization of Agave tequilana Weber var. Azul Juice Spray Drying Process

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    Alejandra Chávez-Rodríguez

    2014-01-01

    Full Text Available In this work, the response surface methodology was employed to optimize the microencapsulation of Agave tequilana Weber var. azul juice with whey protein isolated using a spray drying technique. A Box-Behnken design was used to establish optimum spray drying conditions for Agave tequilana juice. The process was optimized to obtain maximum powder yield with the best solubility time, hygroscopicity, bulk density, water activity, and reducing sugars. The independent parameters for the spray drying process were outlet temperature of 70–80°C, atomizer speed of 20000–30000 rpm, and airflow of 0.20–0.23 m3 s−1. The best spray drying condition was at outlet temperature of 80°C, atomizer speed of 20000 rpm, and air flow rate of 0.23 m3 s−1 to obtain maximum powder yield (14.65%bm, minimum solubility time (352.8 s, maximum bulk density (560 kg m−3, minimum hygroscopicity (1.9×10-7 kgwater s−1, and minimum aw (0.39. The Agave tequilana powder may be considered as an interesting source of dietary fiber used as food additive in food and nutraceutical industries.

  14. A patient with Pfeifer-Weber-Christian Disease - Successful Therapy with Cyclosporin A: case report

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    Schölmerich Jürgen

    2010-01-01

    Full Text Available Abstract Background Pfeifer-Weber-Christian disease (PWCD is a rare inflammatory disorder of the subcutaneous fatty tissue. The diagnosis and therapy of this rare type of panniculitis is still controversial and will be discussed in this article. Case presentation We here report the rare case of a 64-year old male patient, with PWCD. The patient suffered from rheumatoid arthritis for several years, but then developed relapsing fever and recently occurring painful subcutaneous nodules predominantly at the inner part of his left upper limb with no signs of synovitis. Finally, a biopsy from one of the nodules revealed lobular panniculitis with mixed cell infiltrate, which was conformable only with PWCD, after excluding several differential diagnoses. In our patient PWCD developed despite immunosuppressive therapy with steroids and different disease modifying drugs, which the patient received to treat his underlying rheumatoid arthritis. However, when DMARD therapy was switched to Ciclosporin A the patient's symptoms resolved. Conclusion Our observation supports the hypothesis that T cells are involved in the pathogenesis of PWCD. Thus, T cell modifying drugs should be primarily used to treat patients with this rare disorder.

  15. Bilateral Sturge-Weber and Phakomatosis Pigmentovascularis with Glaucoma, an Overlap Syndrome

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    Bharat Patil

    2015-01-01

    Full Text Available Aim. To report a case of bilateral Sturge-Weber and Phakomatosis pigmentovascularis with secondary glaucoma in a child. Method. Case report. Results. A 4-year-old male child was referred to us for control of intraocular pressure (IOP. Sleeping IOP was 36 mm Hg in right eye and 28 mm Hg in the left eye. The sclera of both the eyes showed bluish black pigmentation—melanosis bulbi. Fundus examination of both eyes showed diffuse choroidal hemangiomas with glaucomatous cupping. Nevus flammeus was present on both sides of face along all the 3 divisions of trigeminal nerve with overlying hypertrophy of skin and on left forearm. Nevus fuscocaeruleus was present on upper trunk. All skin lesions were present since birth and were stationary in nature. CT scan of head revealed left-sided cerebral atrophy. Intraocular pressure was controlled after treatment with topical antiglaucoma medications. Pulsed Dye Laser has been advised by dermatologist for skin lesions. Patient has been advised for regular follow-up. Conclusion. The two overlapping dermatological disorders and their association with glaucoma are a rare entity. Management should be targeted both for dermatological and eye conditions.

  16. Ruthenium-106 Plaque Therapy for Diffuse Choroidal Hemangioma in Sturge-Weber Syndrome

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    Agnieszka Kubicka-Trząska

    2011-01-01

    Full Text Available Diffuse choroidal hemangiomas associated with Sturge-Weber syndrome (SWS are classically treated with external beam radiotherapy (EBR, but there are a few reports usually of single cases indicating the usefulness of plaque therapy. We present our observations on two cases of diffuse choroidal hemangiomas with exudative retinal detachment associated with SWS treated with Ruthenium-106 plaque therapy. Outcomes included best-corrected visual acuity (BCVA and regression in tumor thickness measured by ultrasonography. The initial BCVA of the affected eyes was counting fingers at 1 meter and light projection. Pretreatment tumors thickness was 3.5 mm and 4.7 mm. In a follow-up period of 18–24 months, significant reduction in thickness of choroidal hemangiomas up to 1.2 mm and 1.4 mm with prompt resolution of exudative retinal detachment was observed. BCVA achieved 20/200 and 20/400, respectively. The findings in this paper indicate that Ruthenium-106 plaque therapy is effective in treatment of diffuse choroidal hemangiomas associated with SWS.

  17. A forma e o "espírito” do capitalismo em Max Weber

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    Fábio Cadore Hartmann

    2014-07-01

    Full Text Available http://dx.doi.org/10.5007/1806-5023.2014v11n1p30   A teoria da ação social, da ordem e da cultura proposta por Max Weber continua provocando renovados debates. A proposta deste artigo está em retomar brevemente as contribuições do autor a respeito do “espírito” do capitalismo, com a intenção de demostrar a sua relação com a forma socioeconômica do capitalismo, ou seja, abordar a relação entre os fatores culturais e materiais que só foram passíveis de desenvolvimento no Ocidente moderno. Naturalmente, o papel do ascetismo protestante também será considerado. Além de definir “forma” e “espírito”, os aspectos institucionais e culturais, poderemos observar que a teoria weberiana buscou compreender e explicar os fenômenos sociais em sua complexidade multicausal, sendo o capitalismo (foco aqui e o racionalismo dois dos pontos centrais de sua obra.

  18. Weber no Século XXI: Desafios e Dilemas de um Paradigma Weberiano

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    Carlos Eduardo Sell

    2014-03-01

    Full Text Available Después de décadas de intensivo trabajo de exegesis de la obra de Weber, una amplia investigación realizada en Alemania sobre este autor condujo a la caracterización de su obra en torno al tema de la racionalización. A partir de este presupuesto, una nueva generación de investigadores viene intentando formular una propuesta de actualización de la teoría weberiana, por medio de su confrontación con los principales problemas de análisis de la sociología contemporánea. ¿Cuáles son las características del "paradigma weberiano" y cómo evaluarlo en términos de agenda teórica contemporánea? Con base en estas cuestiones, se examina, en primer lugar, cómo el programa de investigación weberiano se inserta en la disputa alrededor de la articulación entre agencia (plano micro y estructura (macro en la teoría social. El segundo eje de análisis trata la teoría de la modernidad y evalúa el intento de sus intérpretes de desplegar las investigaciones weberianas del plano de la génesis al plano de la diversificación de la modernidad (modernidades múltiples.

  19. Analysis of Epileptic Discharges from Implanted Subdural Electrodes in Patients with Sturge-Weber Syndrome.

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    Yasushi Iimura

    Full Text Available Almost two-thirds of patients with Sturge-Weber syndrome (SWS have epilepsy, and half of them require surgery for it. However, it is well known that scalp electroencephalography (EEG does not demonstrate unequivocal epileptic discharges in patients with SWS. Therefore, we analyzed interictal and ictal discharges from intracranial subdural EEG recordings in patients treated surgically for SWS to elucidate epileptogenicity in this disorder.Five intractable epileptic patients with SWS who were implanted with subdural electrodes for presurgical evaluation were enrolled in this study. We examined the following seizure parameters: seizure onset zone (SOZ, propagation speed of seizure discharges, and seizure duration by visual inspection. Additionally, power spectrogram analysis on some frequency bands at SOZ was performed from 60 s before the visually detected seizure onset using the EEG Complex Demodulation Method (CDM.We obtained 21 seizures from five patients for evaluation, and all seizures initiated from the cortex under the leptomeningeal angioma. Most of the patients presented with motionless staring and respiratory distress as seizure symptoms. The average seizure propagation speed and duration were 3.1 ± 3.6 cm/min and 19.4 ± 33.6 min, respectively. Significant power spectrogram changes at the SOZ were detected at 10-30 Hz from 15 s before seizure onset, and at 30-80 Hz from 5 s before seizure onset.In patients with SWS, seizures initiate from the cortex under the leptomeningeal angioma, and seizure propagation is slow and persists for a longer period. CDM indicated beta to low gamma-ranged seizure discharges starting from shortly before the visually detected seizure onset. Our ECoG findings indicate that ischemia is a principal mechanism underlying ictogenesis and epileptogenesis in SWS.

  20. Epileptogenesis in neurocutaneous disorders with focus in Sturge Weber syndrome [version 1; referees: 2 approved

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    Anna Pinto

    2016-03-01

    Full Text Available Epilepsy is a major morbidity in Sturge Weber syndrome, a segmental vascular neurocutaneous disorder classically associated with facial angiomas, glaucoma, and leptomeningeal capillary-venous type vascular malformations. The extent of the latter correlates with neurological outcome. Post-zygotic mosaicism for the activating mutation p.R183Q of the GNAQ gene has been identified as the major cause. GNAQ encodes for an alpha subunit of a heterotrimeric G protein critical to blood vessel development. The earlier the timing of the mutation in development, the more severe the involvement, e.g. from isolated port-wine stains to the full syndrome. The strongest predictors of adverse outcomes are MRI and the presence of angiomas involving any part of the forehead, delineated inferiorly from the outer canthus of the eye to the top of the ear, and including the upper eyelid.  The neurological course may be progressive and the typical constellation of symptoms is focal onset seizures, hemiparesis, headache, stroke-like episodes, behavior problems, intellectual disability, and visual field deficits. Antiseizure medications are effective in about half of patients. The presence of localized seizures, focal neurological deficits, and drug resistant epilepsy indicate epilepsy surgical evaluation. Earlier seizure onset, i.e. before six months of age, is associated with a more severe course with significant residual deficits. Factors contributing to epileptogenesis include decreased brain tissue perfusion due to abnormal venous drainage, anoxic injury contributing to cerebral calcification, breakdown of the blood-brain barrier, and the presence of developmental cortical malformations. Pre-symptomatic prophylactic treatment may be a future option to modify the course of the disease including the associated epileptogenesis.

  1. WIRED BY WEBER: The Story of the First Searcher and Searches for Gravitational Waves

    Science.gov (United States)

    Trimble, Virginia

    2017-01-01

    Joe Weber, the last child of eastern European immigrants, had a ham radio license at age 10. He also wired the mess hall of the US Naval Academy for sound, causing the chatter and clashing crockery of his fellow midshipmen to be drowned out by Schubert's Great C Major symphony. He kept a 6 cm radar (not standard equipment on submarine chasers) working before and during the Sicilian landing and ended ``his'' war in charge of electronic countermeasures for the Navy. Hired as a full professor of electrical engineering and ordered to get a PhD in something, somewhere, by the University of Maryland in 1949, he talked with George Gamow (a story for a different time), but ended up working with Keith Laidler at Catholic University of America on the inversion spectrum of ammonia, building and using a 2-meter traveling wave tube. That, plus a lecture by Karl Herzfeld on the Einstein A and B coefficients, led him to think about inverted populations as amplifiers and spectrometers. His talk at an IEEE conference and the subsequent paper were the first ``open source'' presentations of what we now call masers and lasers. Then came his interest in General Relativity and the desire to bring this beautiful theory into contact with laboratory science. He started building and then operating bar detectors for gravitational waves in 1965-66, and reporting results from 1968-69. The scientific community first took an enormous interest in his work, then ``voted him off the island'' starting in about 1973. He continued to operate bar detectors, and later perfect crystal detectors for neutrinos, until his death on 30 September 2000 (Rosh Hashonah that year). The first LIGO event was recorded on his 15th Jarhzeit. We had, by that time, been married for 28.5 years, and it was a joy to watch him pick the right resistor or capacitor out of a box of miscellaneous electronic components.

  2. Primary Single-Plate Molteno Implant for Pediatric Glaucoma Associated with Sturge-Weber Syndrome

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    Heydar Amini

    2008-12-01

    Full Text Available

    PURPOSE: To evaluate the efficacy and safety of primary single-plate Molteno tube implantation for management of glaucoma in children with Sturge-Weber syndrome. METHODS: Primary single-plate Molteno tube implantation was performed in eyes of patients with Sturge-Weber syndrome aged < 17 years. Success was defined as intra-ocular pressure (IOP higher than 22 mmHg with (relative success or without (absolute success antiglaucoma medications. Intra- and postoperative complications were also evaluated. RESULTS: Overall, nine eyes of seven patients with mean age of 9.6±3.7 (range 5-17 years were operated and followed for 32±4.7 (range 20-36 months. Mean IOP decreased from 34.2±8.3 mmHg preoperatively to 21.2±7.3 mmHg at final follow up (P=0.012. Mean number of antiglaucoma medications decreased from 3.4±0.5 preoperatively to 2.2±1.3 at final follow up (P=0.058. The cumulative probability of relative success was 97.2% (95% confidence interval [CI], 91.8-100% at 12 months, 78.0% (95%CI, 60.4-95.7% at 24 months and 43.3% (95%CI, 16.2-70.5% at final follow up. Two eyes achieved absolute success during the first six months, however, at six months and later no eye achieved absolute success. No intraoperative complication occurred; postoperative complications included choroidal effusion necessitating drainage in three eyes (33

  3. Rendu-Osler-Weber syndrome: what radiologists should know. Literature review and three cases report; Sindrome de Rendu-Osler-Weber: o que o radiologista precisa saber: revisao da literatura e apresentacao de tres casos

    Energy Technology Data Exchange (ETDEWEB)

    Agnollitto, Paulo Moraes; Barreto, Andre Rodrigues Facanha; Barbieri, Raul Fernando Pinsetta; Junior, Jorge Elias; Muglia, Valdair Francisco, E-mail: agno53@gmail.com [Universidade de Sao Paulo (HC/FMRP/USP), Ribeirao Preto, SP (Brazil). Fac. de Medicina. Hospital das Clinicas

    2013-05-15

    Rendu-Osler-Weber syndrome or hereditary hemorrhagic telangiectasia is an autosomal dominant vascular disease involving multiple systems whose main pathological change is the presence of abnormal arteriovenous communications. Most common symptoms include skin and mucosal telangiectasias, epistaxis, gastrointestinal, pulmonary and intracerebral bleeding. The key imaging finding is the presence of visceral arteriovenous malformations. The diagnosis is based on clinical criteria and can be confirmed by molecular biology techniques. Treatment includes measures for management of epistaxis, as well as surgical excision, radiotherapy and embolization of arteriovenous malformations, with emphasis on endovascular treatment. The present pictorial essay includes a report of three typical cases of this entity and a literature review. (author)

  4. Prácticas de manejo, usos y valoración de taxones de Cactaceae en el noroeste de Córdoba, Argentina

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    Julieta Karina Torrico Chalabe

    2015-07-01

    Full Text Available En el noroeste de Córdoba, los taxones de Cactaceae representan un recurso importante que contribuye a la subsistencia y a la vida cotidiana de los pobladores locales, siendo el invierno particularmente duro para la vida de las personas y la producción de animales, y es casi imposible hacer cultivos anuales en secano. Se planteó como objetivo la recuperación y sistematización del conocimiento botánico local, poniendo énfasis en la diversidad de taxones utilizados, las prácticas de manejo asociadas y la valoración de estas plantas particulares por parte de los pobladores del área de estudio. Se realizó posteriormente un listado de 13 taxones nativos y naturalizados, con sus nombres vernáculos y sus usos. Se registraron 12 tipos de usos y 6 prácticas de manejo. Por último, se evidenció que los pobladores valoran a las cactáceas como importantes o muy importantes por su utilidad como recurso de subsistencia (forrajero y alimentario y por su valor ornamental (estético y económico. Así, el conocimiento botánico de algunos pobladores sobre los taxones estudiados representa, para un futuro, información útil para toda la población y para los encargados de planes de manejo y conservación de ambientes áridos.

  5. Talocrural dislocation with associated weber type C fibular fracture in a collegiate football player: a case report.

    Science.gov (United States)

    Ricci, R Daniel; Cerullo, James; Blanc, Robert O; McMahon, Patrick J; Buoncritiani, Anthony M; Stone, David A; Fu, Freddie H

    2008-01-01

    To present the case of a talocrural dislocation with a Weber type C fibular fracture in a National Collegiate Athletic Association Division I football athlete. The athlete, while attempting to make a tackle during a game, collided with an opponent, who in turn stepped on the lateral aspect of the athlete's ankle, resulting in forced ankle eversion and external rotation. On-field evaluation showed a laterally displaced talocrural dislocation. Immediate reduction was performed in the athletic training room to maintain skin integrity. Post-reduction radiographs revealed a Weber type C fibular fracture and increased medial joint clear space. A below-knee, fiberglass splint was applied to stabilize the ankle joint complex. Subtalar dislocation, Maisonneuve fracture, malleolar fracture, deltoid ligament rupture, syndesmosis disruption. The sports medicine staff immediately splinted and transported the athlete to the athletic training room to reduce the dislocation. The athlete then underwent an open reduction and internal fixation procedure to stabilize the injury: 2 syndesmosis screws and a fibular plate were placed to keep the ankle joint in an anatomically reduced position. With the guidance of the athletic training staff, the athlete underwent an accelerated physical rehabilitation protocol in an effort to return to sport as quickly and safely as possible. Most talocrural dislocations and associated Weber type C fibular fractures are due to motor vehicle accidents or falls. We are the first to describe this injury in a Division I football player and to present a general rehabilitation protocol for a high-level athlete. Sports medicine practitioners must recognize that this injury can occur in the athletic environment. Prompt reduction, early surgical intervention, sufficient resources, and an accelerated rehabilitation protocol all contributed to a successful outcome in the patient.

  6. WEBER AND THE LUXURY CONSUMPTION: A DISCUSSION ABOUT “THE PROTESTANT ETHIC AND THE SPIRIT OF CAPITALISM”

    OpenAIRE

    Priscilla Schramm Portugal; Universidade Federal do Paraná

    2007-01-01

    The magnitude of the sociologist Max Weber’s studies is undeniable in the Social Sciences history, but does his book, The Protestant Ethic and the Spirit of Capitalism, explain the luxury consumption nowadays? In this article, it is going to be demonstrated some critiques of this book of Weber, made by authors who believe that the sociologist has disdained some important data that influenced the whole society in the 17th century, as the fashion, the value of romantic love and the European soc...

  7. Early Sociology of the Business Enterprise: Max Weber's Theory of the Modern Business Enterprise in Economy and Society

    DEFF Research Database (Denmark)

    Jagd, Søren

    be explained as the unfolding of a sociological theory of the modern business enterprise. Some of the most important features of Weber’s theory of the modern business enterprise are presented. Weber points to the multidimensional institutional embeddedness of the modern business enterprise and to the crucial...... importance of ongoing tensions between formal and substantive rationality. Weber’s theory of the modern business enterprise in chapter 2 of Economy and Society may then be seen as an important but still unexplored early contribution to a sociological theory of the modern business enterprise....

  8. On Max Weber ’s Cultural Theory%论韦伯的文化理论

    Institute of Scientific and Technical Information of China (English)

    单世联

    2015-01-01

    Max Weber,a German social thinker,was also an important cultural theorist.In the research of the origin of the capitalist spirit,Max Weber broadened the relationship between culture and economy deeply; as a result, his theory is parallel to Marxism to some degree. In the interpretation of the western world outlook about “disenchantment,”Weber revealed the competition and conflicts in the modern value outlook,and presented a complex entanglement about the “excessive order”and “excessive conflict”in modern culture.In the research of the western rational fate,Weber analyzed the relationships between formation and technology in western self-discipline art and progress in art.All of his important theories and views not only givea new interpretation of modern cultural production but also have an important influence on the contemporary cultural theory.So this paper generalizes Weber’s cultural viewsfrom three aspects,providing some new resources for the cultural issues being discussed.%德国社会思想家马克斯·韦伯实际上也是一位重要的文化理论家。在对资本主义精神起源的研究中,韦伯深度展开探讨了文化与经济之间的关系,其所论可以与马克思主义对话;在对西方世界观“除魅”的阐释中,韦伯揭示了现代价值观的竞争和冲突,呈现了现代文化“秩序过度”与“冲突过度”的复杂纠缠;在对西方理性化命运的探究中,韦伯分析了西方自律艺术的形成及技术与艺术进步的关系。这些重要观念,不但对现代文化生产提出了新的解释,而且对当代文化理论产生了重要影响。文章从三个方面概括韦伯的文化观点,为当前正在讨论的一些文化议题提供一些新的资源。

  9. Pyogenic Granuloma in a Patient of Sturge-Weber Syndrome with Bilateral Port Wine Stain- A Rare Case Report

    Directory of Open Access Journals (Sweden)

    Shantala Arunkumar

    2014-07-01

    Full Text Available Sturge-Weber syndrome (SWS also known as encephalotrigeminal angiomatosis. It is a neurocutaneous syndrome, characterized by a facial vascular birthmark and neurological abnormalities. An ipsilateral or bilateral facial cutaneous vascular malformation Port Wine Stain (PWS usually affects the upper face. Other clinical manifestations are seizures, glaucoma, hemiparesis, mental retardation and delayed developmental milestones. The main objective of this case report is to unravel such a rarest syndrome with bilateral port-wine stain, which has intraoral manifestation of pyogenic granuloma involving gingiva in an 11 year old boy.

  10. ANÁLISIS COMPARATIVO ENTRE JARABE DE AGAVE AZUL (Agave tequilana Weber var. azul) Y OTROS JARABES NATURALES

    OpenAIRE

    Erika Mellado-Mojica; Mercedes Gpe. López-Pérez

    2013-01-01

    El jarabe de agave azul ( Agave tequilana Weber var. azul) es la sustancia dulce natural producida por hidrólisis de los fructanos almacenados en la planta de maguey. Este endulzante se ha popularizado por su capacidad prebiótica e índice glucémico bajo respecto a otros jarabes y mieles naturales. Las marcas comerciales, distribuidores, producción y comercialización de estos jarabes han incrementado, por ello es conveniente conocer sus características físicas y químicas y contrastarlas con la...

  11. Phakomatosis Pigmentovascularis Associated With Sturge–Weber Syndrome, Ota Nevus, and Congenital Glaucoma

    Science.gov (United States)

    Yang, Yangfan; Guo, Xiujuan; Xu, Jiangang; Ye, Yiming; Liu, Xiaoan; Yu, Minbin

    2015-01-01

    Abstract Phakomatosis pigmentovascularis (PPV) is a rare congenital malformation syndrome that is characterized by a combination of capillary abnormalities and dermal melanocytosis. We describe 3 cases of PPV combined with bilateral Sturge–Weber syndrome (SWS), Ota nevus, and congenital glaucoma. Case 1 was a 2-year-old boy. Facial port-wine stains distributed along the 3 branches of his trigeminal nerves, which suggested the existence of SWS. Gray-blue patches were spread over the frontal and temporal areas of bilateral face, waist, buttocks, and thigh. Bilateral triangular alopecia was found on the temporal scalp. The diagnosis of Ota nevus was made by the bilateral scleral malanocystosis. Increased intraocular pressure, enlarged cornea, and pathologic optic disc cupping supported the diagnoses of infantile bilateral glaucoma. Case 2 was a 4-year-old boy. Port-wine stains were found on the face along the 3 branches of the trigeminal nerve and distributed along the trunk, arms, and legs. Mongolian spots spread over his frontal and temporal areas of the bilateral face, waist, buttocks, thigh, abdomen, and back. Infantile glaucoma was found in both eyes. Ota nevus were found in the both eyes. Optic coherent tomography (OCT) scans revealed increased thickness of choroid. Case 3 was a 5-year-old boy. Besides Ota nevus and infantile glaucoma in both eyes, color Doppler ultrasonography showed choroidal hemagioma. OCT scan showed increased choroidal thickness. The bilateral triangular alopecia on the child's temporal scalp was similar to that of Case 1. Cases 1 and 2 presented with port-wine stain patches that were consistent with the characteristic manifestation of PPV type IIb. However, the CMTC of Case 3 met the diagnostic criteria for PPV type Vb. Case 1 was treated with trabeculotomies in both eyes. For Cases 2 and 3, surgical interventions were not considered due to the high risks of antiglaucomatous operation complications. We prescribed them antiglaucoma

  12. Phakomatosis Pigmentovascularis Associated With Sturge-Weber Syndrome, Ota Nevus, and Congenital Glaucoma.

    Science.gov (United States)

    Yang, Yangfan; Guo, Xiujuan; Xu, Jiangang; Ye, Yiming; Liu, Xiaoan; Yu, Minbin

    2015-07-01

    Phakomatosis pigmentovascularis (PPV) is a rare congenital malformation syndrome that is characterized by a combination of capillary abnormalities and dermal melanocytosis.We describe 3 cases of PPV combined with bilateral Sturge-Weber syndrome (SWS), Ota nevus, and congenital glaucoma.Case 1 was a 2-year-old boy. Facial port-wine stains distributed along the 3 branches of his trigeminal nerves, which suggested the existence of SWS. Gray-blue patches were spread over the frontal and temporal areas of bilateral face, waist, buttocks, and thigh. Bilateral triangular alopecia was found on the temporal scalp. The diagnosis of Ota nevus was made by the bilateral scleral malanocystosis. Increased intraocular pressure, enlarged cornea, and pathologic optic disc cupping supported the diagnoses of infantile bilateral glaucoma. Case 2 was a 4-year-old boy. Port-wine stains were found on the face along the 3 branches of the trigeminal nerve and distributed along the trunk, arms, and legs. Mongolian spots spread over his frontal and temporal areas of the bilateral face, waist, buttocks, thigh, abdomen, and back. Infantile glaucoma was found in both eyes. Ota nevus were found in the both eyes. Optic coherent tomography (OCT) scans revealed increased thickness of choroid. Case 3 was a 5-year-old boy. Besides Ota nevus and infantile glaucoma in both eyes, color Doppler ultrasonography showed choroidal hemagioma. OCT scan showed increased choroidal thickness. The bilateral triangular alopecia on the child's temporal scalp was similar to that of Case 1. Cases 1 and 2 presented with port-wine stain patches that were consistent with the characteristic manifestation of PPV type IIb. However, the CMTC of Case 3 met the diagnostic criteria for PPV type Vb.Case 1 was treated with trabeculotomies in both eyes. For Cases 2 and 3, surgical interventions were not considered due to the high risks of antiglaucomatous operation complications. We prescribed them antiglaucoma indications

  13. Exploração operatória e redução de sindesmose em lesão de tornozelo de Weber tipo C Operative exploration and reduction of syndesmosis in Weber type C ankle injury

    Directory of Open Access Journals (Sweden)

    Yunfeng Yang

    2013-04-01

    Full Text Available OBJETIVO: Investigar os métodos cirúrgicos no tratamento de fratura de tornozelo de Weber tipo C e estimar a necessidade de exploração cirúrgica da sindesmose. MÉTODOS: Quarenta e três pacientes que apresentavam fratura de tornozelo de Weber tipo C foram tratados com redução aberta e fixação interna de outubro de 2004 a dezembro de 2009. Vinte e nove pacientes foram tratados com o procedimento de rotina, que envolve redução aberta e fixação interna, exploração de sindesmose. Nos outros pacientes, foram realizados reparos adicionais. Trinta e quatro pacientes foram acompanhados durante um período médio de 31,2 meses (faixa, 18 a 50 meses, 22 pacientes desse total foram tratados com procedimentos de rotina e 12 foram tratados com exploração cirúrgica adicional da sindesmose. RESULTADOS: Todas as fraturas estavam unidas no período médio de 13,1 semanas (faixa, 10 a 18 semanas, tendo início o apoio de peso total. A escala média de tornozelo e retropé do escore da american orthopaedics foot and ankle society foi 79,86 (faixa, 65 a 98 no grupo procedimentos de rotina e 86,67 (faixa, 78 a 100 no grupo exploração da sindesmose. Os valores do escore de Olerud-Molander foram 77,27 (faixa, 55 a 100 e 86,67 (faixa, 75 a 100, respectivamente. Constatou-se diferença estatisticamente significante entre os dois grupos (P OBJECTIVE: to investigate the surgical methods in treating weber type C ankle injury and estimate the necessity of syndesmosis operative exploration. METHODS: forty three patients presenting weber type C ankle injury were treated with open reduction and internal fixation from october 2004 to december 2009. twenty nine patients were treated with routine procedure involving open reduction and internal fixation, syndesmosis exploration. additional repair was performed in the others. thirty four patients were followed during an average time of 31.2 months (range, 18 to 50 months, 22 patients of those were treated with

  14. Ipsilateral facial and uveal arteriovenous and capillary angioma, microphthalmos, heterochromia of the iris, and hypotony: an oculocutaneous syndrome simulating Sturge-Weber syndrome.

    Science.gov (United States)

    Gass, J D

    1996-01-01

    Sturge-Weber syndrome is a disorder characterized by ipsilateral cavernous hemangioma of the face, uvea, and brain in patients who may present with an enlarged eye, exudative retinal detachment, glaucoma, and seizures. This report presents the clinicopathologic findings of an otherwise healthy infant with ipsilateral arteriovenous and capillary hemangiomas of the face and uveal tract, microphthalmos, iris heterochromia, hypotony, and absence of central nervous system involvement. The association of an arteriovenous-capillary angioma of the ocular adnexa and ipsilateral uveal tract is a syndrome that is distinct from Sturge-Weber syndrome.

  15. SCIENTIFIC METHODOLOGY FOR THE APPLIED SOCIAL SCIENCES: CRITICAL ANALYSES ABOUT RESEARCH METHODS, TYPOLOGIES AND CONTRIBUTIONS FROM MARX, WEBER AND DURKHEIM

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    Mauricio Corrêa da Silva

    2015-06-01

    Full Text Available This study aims to discuss the importance of the scientific method to conduct and advertise research in applied social sciences and research typologies, as well as to highlight contributions from Marx, Weber and Durkheim to the scientific methodology. To reach this objective, we conducted a review of the literature on the term research, the scientific method,the research techniques and the scientific methodologies. The results of the investigation revealed that it is fundamental that the academic investigator uses a scientific method to conduct and advertise his/her academic works in applied social sciences in comparison with the biochemical or computer sciences and in the indicated literature. Regarding the contributions to the scientific methodology, we have Marx, dialogued, the dialectical, striking analysis, explicative of social phenomenon, the need to understand the phenomena as historical and concrete totalities; Weber, the distinction between “facts” and “value judgments” to provide objectivity to the social sciences and Durkheim, the need to conceptualize very well its object of study, reject sensible data and imbue with the spirit of discovery and of being surprised with the results.

  16. Leptomeningeal angiomatosis of the left occipital surface detected by CT scan. With special reference to Sturge-Weber disease

    Energy Technology Data Exchange (ETDEWEB)

    Niiro, Masaki; Mihara, Tadahiro; Maeda, Yoshiki; Awa, Hiroshi; Kadota, Koki; Asakura, Tetsuhiko (Kagoshima Univ. (Japan). Faculty of Medicine)

    1982-10-01

    A case of left occipital leptomeningeal angiomatosis was reported. The patient was a 12-year-old boy who had episodes of severe vascular type headache accompanied by transient right homonymous hemianopsia. CT scan showed localized superficial high density area in the left occipital pole. Remarkable enhancement of the lower and inner surface of the left occipital lobe was demonstrated. Angiography showed poor filling of the distal portion of the left posterior cerebral artery. Skull tomograms showed linear calcifications in the left occipital region. Brain scan showed increased RI uptake in the left occipital region. During operation, the surface of the left occipital lobe was covered by excessive, fine, vascular networks which extended over the arachnoid membrane. The abnormal vessels were cauterized by a CO/sub 2/ laser as throughly as possible. The occipital pole felt gritty. Histologically, the abnormal vessels had spread into the subarachnoid space and were predominantly veins with thin and enlarged walls. The abnormal vessels followed the leptomeninges in the sulci of the cerebral cortex. Underneath the abnormal vessels, in the external layers of the cerebral cortex, calcium deposits were scattered and gliosis and degeneration of the ganglion cells were observed. The lesion was comparable with leptomeningeal angiomatosis. Though the pathological findings of the specimen, CT findings, and brain scan findings were extremely similar to those of Sturge-Weber disease, in this case, the typical clinical and roentgenographic findings of Sturge-Weber disease were all absent.

  17. HLA and epidermolysis bullosa: evidence for independent assortment of Weber-Cockayne subtype of epidermolysis bullosa and HLA complex.

    Science.gov (United States)

    Vaidya, S; Tyring, S K; Feldkamp, M; Johnson, L B; Fine, J D

    1991-05-01

    The purpose of this study was to examine the genetic linkage (but not the association) between HLA complex and Weber-Cockayne Subtype of epidermolysis bullosa (EBS-WC). We HLA typed 44 members of three multi-generation families in which 24 members have the clinical evidence of EBS-WC. The patterns of inheritance of various HLA haplotypes and the disease were mathematically analyzed to estimate frequency of recombination (i.e. genetic distance) between HLA complex and the disease by calculating Lod Scores for each family separately as well as all for three families combined. Our results show that only one family had a positive Lod Score. The Lod Scores for the remaining two families as well as the combined Lod Score for all three families were negative. These data suggest that odds are against the genetic linkage between HLA complex and Weber-Cockayne Subtype of epidermolysis bullosa and in favor of independent assortment of the disease and HLA complex.

  18. High fidelity simulation and analysis of liquid jet atomization in a gaseous crossflow at intermediate Weber numbers

    Science.gov (United States)

    Li, Xiaoyi; Soteriou, Marios C.

    2016-08-01

    Recent advances in numerical methods coupled with the substantial enhancements in computing power and the advent of high performance computing have presented first principle, high fidelity simulation as a viable tool in the prediction and analysis of spray atomization processes. The credibility and potential impact of such simulations, however, has been hampered by the relative absence of detailed validation against experimental evidence. The numerical stability and accuracy challenges arising from the need to simulate the high liquid-gas density ratio across the sharp interfaces encountered in these flows are key reasons for this. In this work we challenge this status quo by presenting a numerical model able to deal with these challenges, employing it in simulations of liquid jet in crossflow atomization and performing extensive validation of its results against a carefully executed experiment with detailed measurements in the atomization region. We then proceed to the detailed analysis of the flow physics. The computational model employs the coupled level set and volume of fluid approach to directly capture the spatiotemporal evolution of the liquid-gas interface and the sharp-interface ghost fluid method to stably handle high liquid-air density ratio. Adaptive mesh refinement and Lagrangian droplet models are shown to be viable options for computational cost reduction. Moreover, high performance computing is leveraged to manage the computational cost. The experiment selected for validation eliminates the impact of inlet liquid and gas turbulence and focuses on the impact of the crossflow aerodynamic forces on the atomization physics. Validation is demonstrated by comparing column surface wavelengths, deformation, breakup locations, column trajectories and droplet sizes, velocities, and mass rates for a range of intermediate Weber numbers. Analysis of the physics is performed in terms of the instability and breakup characteristics and the features of downstream

  19. Efecto de diferentes reguladores de crecimiento vegetal sobre la germinación de semillas y desarrollo de plántulas de dos especies de Ferocactus (Cactaceae

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    Karina Amador-Alférez

    2015-08-01

    Full Text Available Se evaluó el efecto de la adición de tres regu-ladores de crecimiento vegetal (RCV sobre la respuesta germinativa y crecimiento de plántulas en las especiesFerocactus histrixyF. latispinus(Cactaceae. Grupos de semillas se germinaron con la adición de diferentes concentraciones (125, 250, 500 ppm de áci-do indolacético (AIA, ácido naftalenacético (ANA y ácido giberélico (AG3, mientras que otras semillas (control se sembraron con agua destilada solamente. Cada tercer día y durante 30 días se llevó a cabo el registro de porcentaje de germinación (%G, el índice de velocidad de germinación (IVG y de coeficientes de regresión; los caracteres morfológicos durante el crecimiento inicial de las plántulas provenientes de dichos experimentos también fueron registrados. Los resultados demostraron diferencias estadísticas significativas (Tukey, P Ferocactus, se registraron en el tratamiento control. El AIA a una concentración de 125 ppm promovió 51% de germinación enF. latispinusal noveno día del experimento, un 62% de germinación se registró paraF. histrixen el sexto día con 250 ppm de ANA; mientras que el porcentaje de germinación más bajo (

  20. Distinguishing suitable biotypes of Dactylopius tomentosus (Hemiptera: Dactylopiidae) for biological control of Cylindropuntia fulgida var. fulgida (Caryophyllales: Cactaceae) in South Africa.

    Science.gov (United States)

    Mathenge, C W; Holford, P; Hoffmann, J H; Zimmermann, H G; Spooner-Hart, R; Beattie, G A C

    2009-12-01

    Cylindropuntia fulgida (Engelmann) F.M. Knuth var. fulgida (Engelmann) F.M. Knuth (Cff) (Caryophyllales: Cactaceae) is native to Mexico and Arizona and was introduced into South Africa for ornamental purposes. It subsequently became highly invasive, necessitating control. The cochineal insect, Dactylopius tomentosus (Lamarck) (Hemiptera: Dactylopiidae), was selected as a potential biological control agent based on its restricted host range among Cylindropuntia species and previous success in controlling C. imbricata (DC.) F. Knuth (Ci). Eight D. tomentosus provenances (Cholla, Cholla E, Fulgida, Mamillata, Imbricata, Tunicata U, Tunicata V and Rosea) from Cylindropuntia species in their native ranges were reared on Cff, whilst Cholla and Imbricata were also reared on Ci. Large differences were found in the development and survival of crawlers, and in the reproductive capacity of females. Three subjective categories of provenance interaction with host plants were identified based on a fitness index (FI) calculated from data relating to crawler survival, female development time and fecundity: (i) thriving (FI > or = 1) - insects had shorter developmental times, high crawler survival and highly fecund females (Cholla); (ii) surviving (FI0) - insects had extended development times, low crawler survival and low fecundity (Imbricata, Fulgida and Mamillata); and (iii) dying (FI = 0) - insects died before or at the second instar (Rosea, Tunicata U and Tunicata V). Cholla, therefore, is highly suitable for biological control of Cff in South Africa. In addition, Cholla thrived on Cff but only survived on Ci whilst, in contrast, Imbricata thrived on Ci but only survived on Cff. This differential ability of provenances to thrive or survive on different host plants demonstrated that host adapted biotypes of D. tomentosus exist; therefore, biotypes should be taken into account when considering this species as a biological control agent of cactus weeds.

  1. Max Weber e Hans Kelsen: a sociologia e a dogmática jurídicas

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    Daniel Barile da Silveira

    2006-11-01

    Full Text Available Max Weber e Hans Kelsen são dois autores clássicos considerados de extrema importância na elaboração de alguns dos mais célebres conceitos utilizados nas searas das Ciências Sociais e do Direito, respectivamente. Entretanto, quando se unem tais campos do conhecimento, representados pela Sociologia do Direito, inúmeras confusões terminológicas e relativas ao objeto e ao método de estudo são perpetradas, dificultando que o rigor científico seja atingido com profícua precisão. Nesse sentido, o presente trabalho visa a estabelecer as distinções mais prementes entre a Sociologia Jurídica e a Ciência Jurídica ou Dogmática, tratadas sob a perspectiva da análise dos pensamentos weberianos e kelsenianos.

  2. Max Weber and Studies of Ancient History%马克斯·韦伯与古代史研究

    Institute of Scientific and Technical Information of China (English)

    樊兆鸣

    2001-01-01

    马克斯·韦伯(MaxWeber)由于在方法论、比较宗教研究和社会经济学领域的开创性著作,长期以来作为“社会学之父”著称于世,相对而言,他的带有历史学色彩的早期著作则较少受到人们的关注和重视。这种偏差由于学科体制形成方面的原因而受到进一步强化。

  3. Steal phenomenon in Sturge-Weber syndrome imitating an ictal electroencephalography change in the contralateral hemisphere: report of 2 cases.

    Science.gov (United States)

    Limotai, Chusak; Go, Cristina Y; Baba, Shiro; Okanari, Kazuo; Ochi, Ayako; Rutka, James T; Snead, O Carter; Otsubo, Hiroshi

    2015-08-01

    Infants with Sturge-Weber syndrome (SWS) are considered for surgery if they develop seizures and the seizures prove medically refractory. The authors report on 2 infants (15 and 19 months old) with SWS who underwent scalp video electroencephalography (EEG) and subsequent functional hemispherotomy for intractable partial motor seizures due to extensive left hemispheric angiomatosis. They presented with similar interictal and ictal EEG findings. Ictal EEG showed abrupt high-amplitude delta slow waves, without evolution on the contralateral hemisphere before the build-up of ictal EEG changes on the lesional hemisphere. The patients became seizure free after hemispherotomy. The ictal contralateral slow waves were not a sign of an ictal hemisphere and may indicate prominent ischemic changes resulting from a steal phenomenon of hemispheric angiomatosis during seizure.

  4. HPLC analysis of geometrical isomers of lutein epoxide isolated from dandelion (Taraxacum officinale F. Weber ex Wiggers).

    Science.gov (United States)

    Meléndez-Martínez, Antonio J; Britton, George; Vicario, Isabel M; Heredia, Francisco J

    2006-04-01

    Lutein epoxide has been isolated from petals of dandelion (Taraxacum officinale F. Weber ex Wiggers) by thin-layer chromatography (TLC) on silica to be used for the accurate identification of this carotenoid in other sources. The extract was analyzed by high-performance liquid chromatography (HPLC) using a C(30) column, as a result of which six geometrical isomers were separated. The identification of these isomers was performed on the basis of their UV/vis spectroscopic features in the mobile phase. In quantitative terms, it was observed that all-E-lutein epoxide was the major carotenoid and that there were also high amounts of the (9Z)- and (9'Z)-isomers, although the latter may be an artifact.

  5. A RARE CASE OF RETINAL DETACHMENT WITH CHOROIDAL HAEMANGIOMA ASSOCIATED WITH STURGE–WEBER SYNDROME MIMICKING SCHWARTZ SYNDROME

    Directory of Open Access Journals (Sweden)

    Vivekanand

    2013-05-01

    Full Text Available ABSTRACT: Sturge Weber syndrome (SWS also called encephalo-t rigeminal-angiomatosis, is an uncommon entity in India. The characteristic featur e of SWS is the presence of “port-wine stain” varying from light pink to deep purple, covering tr igeminal nerve distribution. Patients have associated ocular involvement, mental retardation, and seizures due to the involvement of the vasculature of eye and the CNS. Neuro-ophthalmological monitoring of patients with SWS may be useful for early detection of ocular involvement before the appearance of seri ous visual complications. We have reported an unusual case of SWS with port wine stain on half of the body, retinal detachment with raised IOP and cerebellar calcifications with no neurological symptomatic manifestations.

  6. Modern Thinking of Weber Religious Ethics%韦伯宗教伦理观的现代性思考

    Institute of Scientific and Technical Information of China (English)

    李雪君

    2015-01-01

    Max Weber,the famous German political economist and sociologist,is recognized as one of the most important mod-ern sociology and public administration.This paper includes,the rise of capitalism in the West,the development of the history of Marxism and materialism of Marx and Weber's views to attempt to show that the two great huge difference between thinking theo-rists,but we shall not be denied,the enormous contribution of the two ideas.%马克斯·韦伯,德国著名的政治经济学家和社会学家,被公认为是现代社会学和公共行政学最重要的创始人之一。韦伯曾自称他的宗教观点是在马克思设定的思想框架下进一步延伸和继承的理论,但笔者认为,这种继承很大程度上是一种否定性的继承。本文主要对韦伯关于西方资本主义的兴起、发展的原因,以及对马克思主义历史唯物、对马克思和韦伯关于资本主义兴起的观点进行比较分析,从而试图表明两个伟大的思想理论家的观点之间的差异,但我们不得否认两者的思想都对西方资本主义的兴起和发展,以及对从古至今关于宗教伦理观点的巨大贡献。

  7. La presencia de Max Weber en el pensamiento español. Historia de una doble recepción

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    Ruano de la Fuente, María Yolanda

    2007-08-01

    Full Text Available This paper examines two diverse and confronted receptions of Max Weber’s thought in the Hispanic world which we have described as “conservative” and “liberal” lines of interpretation. This analytical scheme allows us to group and highlight some of the most distinguished Spanish intellectuals whose work was influenced by Max Weber’s thought. We will review the context and the particular mode in which these intellectuals assimilated the German author’s work, the meaning of their interpretations and their labour of translation. In short, we will focus on the works of some renowned Hispanic philosophers, jurists and sociologists belonging to the “first interpretative generation” at work from the 1920’s to the 1940’s.Este artículo examina una doble y contrapuesta línea de recepción del pensamiento de Max Weber en el mundo hispanoparlante, que hemos denominado línea “conservadora” y línea “liberal”. Este esquema interpretativo permite agrupar y reseñar a algunos de los más destacados intelectuales españoles, cuyas obras estuvieron marcadas por la influencia del pensamiento de Max Weber. Revisamos el contexto, el sentido de la recepción, la labor de traducción y el modo peculiar en que asimilaron el trabajo del autor alemán. Nos centramos, en suma, en la obra de algunos renombrados filósofos, juristas y sociólogos de habla hispana, si bien limitamos nuestro análisis a la “primera generación receptora”, que fechamos en las décadas de los años 20 a los 40 del siglo XX.

  8. The debate between Weber and Sombart on the Protestant ethic and the development of capitalism: Author Antikritiken as footnote

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    Mariachiara Spagnolo

    2015-03-01

    Full Text Available In 1904/05 the first edition of Weber’s Protestant Ethics was issued, where the thematic framing is ‘uncertain’ and not yet completed: religion is linked to a certain kind of ethos (of the economic system and of ethic (rational, the ethic of «ascetic Protestantism». Around the same years, Sombart outlines the expository path contained in Modern Capitalism, a detailed «picture of the general economic development», which seems to be a ‘more serious’ work – for its content and set of problems – when compared to the research conducted by his friend and colleague Max Weber. Both scholars view the question of the rise and development of capitalism as a rhythmic research: from the historic origins of the phenomenon, to the elaboration, synthesis and change of the economic process that becomes an autonomous and corrosive force in the modern stage. In the Sombartian discourse, however, the particular ‘attitude’ of the Protestant ethic as analysed by Weber can be regarded at most as one of the possible forms of heresy that justifies a certain approach (moral/punitive to money – and not as the only movement which has roused and regulated the economic or capitalistic processes in the strict meaning of economic surplus, profitable and to be reinvested following entrepreneurial logics. Whereas, what the two sociologists have in common is not only the use of sources (almost identical, but the very concept of Geist and individual predisposition of the subjects who accept the modes of action of this ordering spirit that gives an ethical/psychological boost to men endowed with charisma or with particular energy.

  9. Weber, Schutz e a busca de "sentido” na ação social: uma análise comparativa

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    Eliane Fioravante Garcez

    2014-07-01

    Full Text Available http://dx.doi.org/10.5007/1806-5023.2014v11n1p63   O artigo discorre sobre as teorias de Max Weber e de Alfred Schutz e a aproximação desses mundos teóricos com a fenomenologia do filósofo Edmund Husserl. No texto são explorados os conceitos de sentido, compreensão, ação, ação social, relação social dentre outros. São apresentados também a tipologia da ação e os dois níveis de análise sociológica (microssocial e macrossocial na concepção de Weber, para quem a ação é fruto da subjetividade. Já para Schutz, a ação é intersubjetiva, socializada e a compreensão está por detrás da ação, quer para o sentido que o ator dá a sua própria ação (subjetivo, quer para a ação de seu semelhante (intersubjetivo. Tendo em vista essas teorias, este trabalho apresenta os pontos divergentes e convergentes entre elas, mas acima de tudo, registra o quanto são complementares na busca de compreensão do sentido da ação social.  Além dos preceitos conceituais, o texto discute a construção e a aplicação do modelo “tipo ideal” (TI amparados numa concepção schutziana.

  10. Uso, manejo y conservación de Stenocereus griseus (Haworth Buxb. en la Alta Guajira colombiana

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    Vargas Ríos Orlando

    2006-12-01

    Full Text Available En la Alta Guajira del Caribe colombiano, el cactus Stenocereus griseus es muy utilizado por la comunidad Wayuu. En el presente trabajo se caracteriza el sistema de uso y manejo, así como la demanda y oferta potencial de S.
    griseus en dos localidades. Una evaluación de los factores que afectan las poblaciones permitió determinar cinco
    categorías de daño, de las cuales las más importantes son las ocasionadas por corte con machete (tipo I, insectos (Tipo II y cabras (Tipo III. El uso actual de Stenocereus griseus se restringe a la colecta de la madera seca (“yotojoro” para construcción de viviendas tradicionales en la cultura Wayuu; la colecta de frutos en temporada de cosecha y la cosecha de tallos jóvenes para alimento de cabras y cercas vivas. La demanda anual de “yotojoro” está sujeta a la necesidad de construcción de los habitantes del área, que es definida como ocasional. El método actual de cosecha y extracción del mismo no está generando desequilibrio local en el mantenimiento de la especie. La demanda de cardones para cercas vivas y pastoreo es constante durante todo el año y generan el mayor impacto de daño. Finalmente, se discuten los principales problemas de conservación de la especie, y se recomienda establecer alternativas de manejo para las actividades de pastoreo, dado que con el ritmo actual de extracción, la población de cactus está expuesta a una inminente disminución local.

  11. Síndrome de Klippel-Trenaunay-Weber: associação do tratamento operatório à escleroterapia por espuma Klippel-Trenaunay-Weber Syndrome: association of operative treatment with foam sclerotherapy

    Directory of Open Access Journals (Sweden)

    Ronald Luiz Gomes Flumignan

    2011-03-01

    Full Text Available A Síndrome de Klippel-Trenaunay-Weber representa a associação de hemangiomas planos, ectasias venosas e hipertrofia do segmento corpóreo afetado. Apresenta-se o caso de um paciente de 39 anos, sexo masculino, seguido desde 1993 no serviço da Disciplina de Cirurgia Vascular da Escola Paulista de Medicina (Unifesp, por quadro inicial da síndrome em membro inferior esquerdo. O paciente foi tratado apenas por elastocompressão e medidas gerais. Neste período, ele evoluiu com piora da estase venosa, da hipertrofia óssea e da hiperpigmentação de pele. Na ultrassonografia Doppler colorida venosa dos membros inferiores havia perviedade do sistema venoso profundo, hiperfluxo venoso, insuficiência segmentar de veia safena magna com sinais de tromboflebite e tributárias insuficientes. Indicou-se, para a melhora da estase venosa, ligadura da junção safeno-femoral esquerda e escleroterapia (polidocanol 3% retrógrada da mesma, com exérese das ectasias venosas. O paciente recebeu alta hospitalar no primeiro dia pós-operatório e atualmente está em acompanhamento ambulatorial com melhora significativa dos sintomas.The Klippel-Trenaunay-Weber Syndrome is the association of hemangioma, venous ectasia, and hypertrophy of the affected body segment. We report the case of a 39-year-old male followed-up since 1993 due to onset of symptoms in the left lower limb. He was treated only with the use of elastic stockings and general measures. Over the years, he had worsening of venous stasis, of bone hypertrophy, and of skin hyperpigmentation. Color-coded Doppler ultrasonography of the lower limbs showed patency of the deep venous system, venous overflow, segmentar insufficiency of the greater saphenous vein with signs of thrombophlebitis, and insufficient tributary veins. In order to improve venous stasis, ligation of the left sapheno-femoral junction and retrograde foam sclerotherapy (polidocanol 3% with resection of tributary veins were performed. The

  12. Triatominae et Cactaceae : un risque pour la transmission de la Trypanosomose américaine dans le péridomicile (nord-est du Brésil

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    Emperaire L.

    2006-06-01

    Full Text Available Les observations de terrain réalisées dans le nord-est du Brésil ont montré la fréquente association, dans l’espace péridomiciliaire, entre un cactus, le Cereus jamacaru, la présence de nids dans ses branches et celle de Rhodnius neglectus et de Triatoma pseudomaculata, espèces vectrices du parasite Trypanosoma cruzi, agent de la maladie de Chagas. L’analyse des variables architecturales de cette Cactaceae montre que la présence de nids, et donc d’insectes, est inféodée aux pratiques traditionnelles de gestion de ce cactus. Cette étude souligne l’intérêt d’une approche intégrée de l’écologie des Triatominae pour l’identification des variables indicatrices de risque.

  13. Angiome plan de la face: À propos de deux cas dont l’un révélant un syndrome de Sturge Weber et Krabb

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    Bénilde Marie Ange Tiemtoré-Kambou

    2017-01-01

    Full Text Available Sturge Weber and Krabbe syndrome or Sturge weber Syndrome (SWS is a rare and sporadic disease. It associates with a variety of degrees a flat facial skin angioma in the V1 territory of the trigeminal, a pial angioma and a choroidal angioma all in the one side. The neurological involvement of epileptic seizures in fact all the gravity. The authors report two cases of angiomas plane of the face. The first case presents a complete association of the 3 signs in a 5 year old child. The second case presents an association of angioma and choroidal involvement without cerebral damage to imaging in a 25-year-old adult. They thus highlight the interest of imaging examinations in particular MRI in the diagnosis through the classification and follow-up of this pathology.

  14. Treatment of severe neuropatic pain for patients with the syndrome of Klippel-Trenaunay-Weber: case report

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    Danielle Cristina de Oliveira Soares

    2016-12-01

    Full Text Available Introduction: Klippel-Trenaunay-Weber syndrome is a rare congenital anomaly whose etiology has not yet been elucidated. It is characterized by the triad of vascular malformations, cutaneous hemangiomas and overgrowth of bone and soft tissue adjacent. Pain is a common symptom and can be triggered in the following situations: venous disease, scoliosis by the different members and hemangiomas that affect the body surface, the deep planes or viscera. Case report: A female patient, 17, sent from the SARAH Hospital - Fortaleza to the Institute of Clinic Pain José Frota diagnosed with cerebral palsy type triplegia on right eye and anophthalmia featuring an expansive process of vascular origin extending to the paraspinal region, surpassing sciatic foramen and affecting posterior muscles of the left thigh and leg. There are signs of involvement of the sciatic nerve and deep femoral vessels. He was diagnosed with Klippel-Trenaunay-Weber syndrome. She had continuous pain in shock and burning, EVA 10, extending from the lower back, groin and left leg region. The source of hospital treatment consisted of gabapentin 180mg 12/12h, codeine 10mg 12/12h, ibuprofen 300mg 12/12h, codeine/paracetamol 30mg 12/12h and morphine oral 10mg while in pain, but without pain relief. She also used paroxetine 20mg daily, due to depression. The painful condition prevented sleep, caused irritation and worsened the quality of life of the patient. She continued treatment with gabapentin 300mg 12/12h, dipyrone 500mg 12/12h, Methadone 5mg 12/12h and reassessed two weeks showing significant improvement in pain symptoms and sleep, EVA 2. Conclusion: Pain is a symptom commonly described in the clinical picture of patients with this syndrome. The treatment of this disease is still a challenge. The malformations great gifts made it not always possible embolization or painkillers locks. The therapeutic results with strong opioid were satisfactory and have improved the quality of life of

  15. De Max Weber a Michel Maffesoli: inmigración, reencantamiento del mundo y politeísmo de valores en Estados Unidos

    National Research Council Canada - National Science Library

    Rafael Arriaga Martínez

    2014-01-01

    .... Dada la importancia que reviste el método comprensivo de Max Weber para la teoría de la posmodernidad, consideramos algunos de sus instrumentos, los explicamos y los aplicamos, tratando de apegarnos al entendimiento que tiene de ellos Michel Maffesoli. La importancia de lo emocional en la estructuración de los fenómenos descritos con¿rma la utilidad heurística de la teoría de la posmodernidad.

  16. El cambio social y la 'Constitución moderna' en los clásicos de la Sociología. Durkheim y Weber en perspectiva comparada

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    Santiago, José

    2011-08-01

    Full Text Available The aim of this article is to analyse the conception of social change of Durkheim and Weber from a comparative perspective. It proposes a reading of their works attending to the place these authors occupy in what, following Bruno Latour, may be named as “Modern Constitution”. From this metatheoretical level, the comparison brings to light the tools and resources of the “Modern Critique” which they utilise to build their theories of social change. From this comparative perspective, the article examines how Durkheim and Weber theorize on the “fourth guarantee” of the “Modern Constitution”, that refers to God’s presence in modernity. Finally, this “guarantee” is problematized in the frame of the contemporary society attending to current theories.

    El objetivo de este artículo es analizar la concepción del cambio social de Durkheim y Weber desde una perspectiva comparada. Se propone una lectura de sus obras prestando atención al lugar que ambos ocupan en lo que, siguiendo a Bruno Latour, llamaremos “Constitución moderna”. Desde este nivel metateórico, la comparación permitirá mostrar las herramientas y recursos de la “Crítica moderna” de los que estos autores se sirven para construir sus teorías del cambio social. Con esta perspectiva comparada, el artículo examina de qué manera Durkheim y Weber teorizan sobre la “cuarta garantía” de la “Constitución moderna”, que hace referencia al lugar que ocupa Dios en la modernidad. Por último, esta “garantía” es problematizada en el marco de la sociedad contemporánea a partir de las propuestas de algunos teóricos actuales.

  17. Integrated Weber and Lauge-Hansen classification of ankle injuries%踝关节损伤Weber与Lauge-Hansen综合分型分度读片法

    Institute of Scientific and Technical Information of China (English)

    刘经武; 谭利华; 田雨; 刘翠丽; 屈长征; 高劲松

    2014-01-01

    目的:介绍Danis-Weber与Lauge-Hansen综合分型分度法对踝关节损伤平片诊断的应用。方法:应用Danis-Weber与Lauge-Hansen综合分型分度法对287例踝关节创伤的平片重新读片,总结综合分型分度法对踝关节骨折与韧带损伤的诊断价值。结果:287例踝关节损伤照片常规平片共报告骨折343处,韧带损伤176处,应用综合分型分度法读片新发现骨折19处,新发现韧带损伤36处。结论:应用Danis-Weber与Large-Hansen综合分型分度读片法有利于提高影像学医师对踝关节损伤平片诊断的病变发现率。%To intrduce the integrated Danis-Weber and Lauge-Hansen classification of ankle injuries Methods:287 digital ra-diographies with ankle injuries were reviewed and sorted again with integrated Weber and Lauge -Hansen classification.Results:343 fractures and 176 ligamental injuries were found on the conventional ankle digital radiographic reports, and other 19 fractures and 36 ligamental injuries were confirmed with integrated Weber and Lauge-Hansen classification.Conclusion:It would increase the findings of the fractures and ligamen-tal injuries of the ankle joint when the imaging doctors report the injuries with the integrated Weber and Lauge-Hansen classification.

  18. An arteriovenous malformation in the suprapatellar fat pad of the knee associated with Klippel-Trenaunay-Weber syndrome: a case report

    Energy Technology Data Exchange (ETDEWEB)

    Park, Mi Hyun; Kwon, Soon Tae; Shin, Byung Seok; Kim, Young Mo [Chungnam National University Hospital, Daejeon (Korea, Republic of)

    2006-01-15

    Klippel-Trenaunay-Weber syndrome (KTWS) is a vascular disorder that has significant arteriovenous malformation (AVM). We report a case of an AVM in the suprapatellar fat pad of the knee in a patient with the characteristic manifestations of KTWS, including cutaneous hemangioma, limb hypertrophy, and varicose veins. Magnetic resonance imaging, color Doppler sonography, and subsequent angiography demonstrated an AVM in the supra-patellar fat pad of the right knee causing painful swelling of the knee.

  19. O tema da morte trágica de Liev Tolstói e seu impacto em Max Weber e György Lukács: sobre a autonomia nas ciências e na arte * Leo Tolstoy´s tragic death and his impacts on Max Weber and György Lukács: on autonomy of arts and science

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    LUIS FELIPE DE SALLES ROSELINO

    2014-04-01

    Full Text Available Resumo: O tema da morte trágica, presente nos escritos de Liev Tolstói, auxiliou tanto a Max Weber como a György Lukács a caracterizarem o pathos moderno de pressentimento da morte como uma contemplação do vazio. Weber e Lukács encontraram, através das leituras de Tolstói, uma interessante maneira de questionar a autonomia da arte e da ciência moderna, considerando pela esfera estética, como se mostra sem sentido a recente realidade imanente. Ambos assumiram o tema central das obras de Tolstói segundo uma mesma imagem, derivada do contraste entre o mundo antigo e o moderno. Max Weber adequou esse tema a sua teoria do desencantamento do mundo e Lukács, de modo muito semelhante, seguindo seu conceito do paradoxo da necessidade religiosa.Palavras-chave: Tolstói – Weber – Lukács – Desencantamento – Necessidade Religiosa – L’Art Pour l’Art. Abstract: The tragic death in Tolstoy's writings has helped both Max Weber and György Lukács in characterizing the modern pathos as a tragic contemplation of the emptiness of life. Through Tolstoy's readings, Weber and Lukács found an interesting source of denying arts and modern sciences autonomy, considering, from the aesthetics sphere, the meaningless of this new immanent reality. Both has assumed Tolstoy main theme from the same perspective, contrasting ancient and modern worldviews. Max Weber presented this theme in his disenchantment of world theory and Lukács, in a very similar way, following the paradox of religious needing as a mainline.Keywords: Tolstoy – Weber – Lukács – Disenchantment – Religious Needing – L’Art Pour l’Art.

  20. O erro como meio de produção de conhecimento: Max Weber e a Entwicklungsgeschichte

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    Renan Springer de Freitas

    2012-06-01

    Full Text Available A ideia de que erros bizarros podem conduzir a grandes acertos não é estranha à história da ciência. Este artigo examina o esforço realizado por Wolfgang Schluchter no sentido de mostrar que um determinado erro de Max Weber conduziu a um grande acerto – em razão de ter sido produzido nos marcos de uma perspectiva metateórica que conduz erros a acertos, a perspectiva “histórico-desenvolvimental” (Entwicklungsgeschichte. O erro: aplicar o conceito de “povo-pária” aos judeus da Antiguidade. Argumento de Schluchter: os historiadores mostraram que o conceito de “povo-pária” não se aplica aos judeus da Antiguidade, mas, não obstante, vale a pena insistir nesse erro porque ele conduz a um grande acerto: mostrar a importância da ruptura efetuada pelas missões Paulinas (com o particularismo judaico para o desenvolvimento do racionalismo ocidental. Argumento do artigo: isto que Schluchter considera o grande acerto é apenas uma reverberação do pensamento teológico protestante do século XIX.

  1. ¿Sin Dolores? La ética política de Maquiavelo y Weber en The Sweet Hereafter

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    Javier Franzé

    2009-07-01

    Full Text Available This article, on one hand, seeks to analyze the relationship between ethics and politics through Atom Egoyan's film, The Sweet Hereafter ; and on the other hand, it means to demonstrate that theoretical reflection on certain questions not only can and must be done through the use of written texts, but also must consider other formats, like the arts. Indeed, the film presents a problem that allows for us to pose questions that are uncomfortable for both positions traditionally opposed on the relationship between ethics and politics: for the classical one, of Aristotelian and Judeo-Christian roots, as well as the realistic one, based on Macchiavelli and Max Weber's reflections. The first one, represented in the film by the lawyer's strategy, is based on the absolute value of the truth, and thus does not seem to be able to contemplate the consequences that such a truth can entail for coexistence. The second one, characterized by some of the victims, is based on weighing the consequences of their actions, which makes them face the need to commit a lesser evil - lying on the stand in court - in order to avoid a greater evil - the fall of the community. Nonetheless, they do not seem capable of conceiving that in order to achieve political ethics, weighing the consequences is necessary but not sufficient enough, because it would oblige us to consider a political act guided by values that we consider to be wrong or bad, though defended responsibly, as ethical.

  2. ISSUES OF LEGITIMIZING POLITICAL POWER IN THE FIRST HALF OF THE TWENTIETH CENTURY: MAX WEBER AND KARL JASPERS

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    Nicolae IUGA

    2012-12-01

    Full Text Available The issue of legitimizing political power has specific dimensions determined by the historical context. In the period following the First World War, democratic regimes dramatically collapsed due to ample protest movements against the political establishment from different countries, but also as a result of a serious political legitimation crisis, thus making way for the rise of totalitarian regimes of Fascism and Nazism. That time debates on the problem of legitimization political power are symptomatic. Due to the general perception regarding corruption in politics and to the political incapacity to deal with social problems, we can witness a decrease of trust in contemporary democratic regimes.In order to exemplify, in a brief expositive manner, my paper will present the topic of political legitimation approached by Max Weber and Karl Jaspers, in a selection of relevant texts issued by both authors during 1919-1931. The aim of this paper is to highlight the actuality, the validity of Weber’s and Jasper’s statements and also their capacity to give pertinent responses to questions such as: What role do the common values play in the legitimating of power in a democratic society? Are there any kinds of limits regarding the electoral legitimation? How can we make the difference between a legitimate appeal and an illegitimate one, between civism and terrorism?

  3. Spontaneous obliteration of MRI-silent cerebral angiomatosis revealed by CT angiography in a patient with Sturge-Weber syndrome.

    Science.gov (United States)

    Aguglia, Umberto; Latella, Maria Adele; Cafarelli, Franco; Le Piane, Emilio; Gangemi, Antonio; Labate, Angelo; Gambardella, Antonio; Quattrone, Aldo

    2008-01-15

    Type I Sturge-Weber syndrome (SWS) is a neurocutaneous syndrome characterized by facial port wine stain and ipsilateral leptomeningeal angiomatosis. It is commonly complicated by glaucoma and neurological disturbances including seizures, hemiparesis, transient stroke-like deficits, and behavioral problems. Gadolinium-enhanced MRI is the study of choice for demonstrating the leptomeningeal angiomatosis, and is particularly useful for making the diagnosis. Cerebral hematoma and spontaneous obliteration of cerebral angiomatosis have never been reported in SWS. We describe a patient with type I SWS in which a hemorrhage in the left temporal lobe was caused by an underlying angiomatosis. No arteriovenous malformations were detected by brain CT or gadolinium-enhanced MRI, whereas a small angiomatous nidus draining into an ectasic venous collector near the hematoma was disclosed by brain CT angiography. Carotid angiography, performed 3 years after the hemorrhage, demonstrated the spontaneous obliteration of the angioma. This description expands the phenotypic spectrum of type I SWS in which the occurrence of cerebral hemorrhage and MRI-silent cerebral angiomatosis should be included, and emphasizes the need of performing a brain CT angiography in SWS patients whose routine neuroimaging studies fail to detect potentially harmful vessel malformation.

  4. Skull vibration-induced nystagmus test in unilateral superior canal dehiscence and otosclerosis: a vestibular Weber test.

    Science.gov (United States)

    Dumas, Georges; Lion, Alexis; Karkas, Alexandre; Perrin, Philippe; Perottino, Flavio; Schmerber, Sébastien

    2014-06-01

    The skull vibration-induced nystagmus test (SVINT) acts as a vestibular Weber test and reveals a vibration-induced nystagmus (VIN), elicited mainly on the vertex location, with a horizontal or torsional component beating more often toward the side of the lesion in superior canal dehiscence (SCD) than in otosclerosis (OS). In SCD, the VIN vertical component is most often up-beating. These results suggest more a global vestibular contribution than the sole stimulation of the superior semicircular canal. This study aimed to evaluate the possible occurrence of nystagmus during SVINT in unilateral conductive hearing loss related to SCD or OS. The slow-phase velocities (SPVs) of the VIN horizontal, torsional, and vertical components were recorded in patients with a unilateral otologic lesion (17 SCD, 38 OS) and 12 control subjects. Vibratory stimulations (60 Hz, 100 Hz) were applied on the vertex and on each mastoid. In SCD, VIN was observed in 82% of patients with a primarily torsional, horizontal, and vertical (up-beating) component in 40%, 30%, and 30%, respectively. Horizontal and torsional components beat toward the side of the lesion more often than in OS. Higher SPVs were observed after vertex stimulation. In OS, VIN was sparse with low amplitude and was not systematically lateralized to a specific side.

  5. MULTIPHASE DROPLET/SLUG BREAK-UP MECHANISM IN MICROFLUIDIC T-JUNCTIONS AT VARIOUS WEBER NUMBERS

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    Wan Leng (Dawn Leow

    2011-10-01

    Full Text Available Normal 0 false false false EN-MY X-NONE X-NONE The formation of immiscible liquid droplets, or slugs, in microchannels features the advantages of volume control and mixing enhancement over single-phase microflows. Although the applications of droplet-based microfluidics have been widely demonstrated, the fundamental physics governing droplet break-up remains an area of active research. This study defines an effective Weber (Weeff number that characterizes the interplay of interfacial tension, shear stress and channel pressure drop in driving slug formation in T-junction microchannel for a relative range of low, intermediate and high flow rates. The immiscible fluid system in this study consists of Tetradecane slug formation in Acetonitrile. The progressive deformation of slug interfaces during break-up events is observed. Experimental results indicate that, at a relatively low Weeff, clean slug break-up occurs at the intersection of the side and main channels. At intermediate Weeff, the connecting neck of the dispersed phase is stretched to a short and thin trail of laminar flow prior to breaking up a short distance downstream of the T-junction. At a relatively high Weeff, the connecting neck develops into a longer and thicker trail of laminar flow that breaks up further downstream of the main channel.

  6. Volmer-Weber growth stages of polycrystalline metal films probed by in situ and real-time optical diagnostics

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    Abadias, G.; Simonot, L.; Colin, J. J.; Michel, A.; Camelio, S.; Babonneau, D.

    2015-11-01

    The Volmer-Weber growth of high-mobility metal films is associated with the development of a complex compressive-tensile-compressive stress behavior as the film deposition proceeds through nucleation of islands, coalescence, and formation of a continuous layer. The tensile force maximum has been attributed to the end of the islands coalescence stage, based on ex situ morphological observations. However, microstructural rearrangements are likely to occur in such films during post-deposition, somewhat biasing interpretations solely based on ex situ analysis. Here, by combining two simultaneous in situ and real-time optical sensing techniques, based on surface differential reflectance spectroscopy (SDRS) and change in wafer curvature probed by multibeam optical stress sensor (MOSS), we provide direct evidence that film continuity does coincide with tensile stress maximum during sputter deposition of a series of metal (Ag, Au, and Pd) films on amorphous SiOx. Stress relaxation after growth interruption was testified from MOSS, whose magnitude scaled with adatom mobility, while no change in SDRS signal could be revealed, ruling out possible changes of the surface roughness at the micron scale.

  7. Metal contamination in urban street sediment in Pisa (Italy) can affect the production of antioxidant metabolites in Taraxacum officinale Weber.

    Science.gov (United States)

    Bretzel, Francesca; Benvenuti, Stefano; Pistelli, Laura

    2014-02-01

    Taraxacum officinale Weber (dandelion) is a very ubiquitous species, and it can grow in urban environments on metal-polluted sediments deposited in the gutters. This study represents a preliminary step to verify the presence of metals in sediments collected in urban streets in Pisa and to assess the alteration in dandelion metabolites in order to understand its adaptation to polluted environments. The soil and sediments were collected at three urban streets and analyzed for total and extractable Cr, Pb, Cu, Ni, and Zn. The total values of Pb and Zn in street sediments exceeded the limits for residential areas of soils. Zn was the most mobile of the metals analyzed. Floating cultivations trials were set up with dandelion seedlings and street sediments. The metals were analyzed in roots and leaves. Antioxidant power, anthocyanins, polyphenols, non-protein thiols (NP-TH) and chlorophylls were measured in dandelion leaves. The first two parameters (anthocyanins and antioxidant power) were higher in the polluted samples compared to the control; chlorophyll content was lower in the treated samples, whereas NP-TH showed no differences. NP-TH groups determined in roots were associated with the root content of Zn and Pb. These results indicate that dandelion can tolerate plant stress by altering its metabolite content.

  8. Effects of sodium hypochlorite on Agave tequilana Weber bagasse fibers used to elaborate cyto and biocompatible hydrogel films.

    Science.gov (United States)

    Tovar-Carrillo, Karla Lizette; Nakasone, Kazuki; Sugita, Satoshi; Tagaya, Motohiro; Kobayashi, Takaomi

    2014-09-01

    Waste bagasse of Agave tequilana-Weber fibers treated with sodium hydroxide was used to elaborate hydrogel films. The bagasse was offered in an alternative use for the preparation of hydrogel films by phase inversion method without crosslinking and further purification of cellulose. The effect on the properties of the obtained films was studied when the chemical treatment of the agave fibers was changed. It was found that the resultant hydrogels showed increment in tensile from 40 N/mm(2) to 56 N/mm(2) with the increase of sodium hypochlorite concentration from 1 to 10 vol.%, respectively. With regard to biocompatibility properties of the hydrogel films, platelet adhesion, clotting time and protein adsorption were investigated. Analysis of the morphology of adherent NIH3T3 fibroblast indicated that the projected cell area, aspect ratio and long axis gradually increased with the increment of sodium hypochlorite content in the agave treatment. It was presented that the chemical treatment affects cell adhesion and morphology and lignin content remains in the brown fibers.

  9. Polymorphism and methylation patterns in Agave tequilana Weber var. 'Azul' plants propagated asexually by three different methods.

    Science.gov (United States)

    Díaz-Martínez, Miriam; Nava-Cedillo, Alejandro; Guzmán-López, José Alfredo; Escobar-Guzmán, Rocío; Simpson, June

    2012-04-01

    Genetic variation in three forms of asexually propagated Agave tequilana Weber var. 'Azul' plants namely offsets, bulbils and in vitro cultured individuals was studied by AFLP analysis. Low levels of variation were observed between mother plants and offsets and a higher level between mother plant and bulbils. Families obtained from commercial plantations showed lower levels of variation in comparison to families grown as ornamentals. No variation was observed between the original explant and four generations of in vitro cultured plants. Epigenetic variation was also studied by analyzing changes in methylation patterns between mother plants and offspring in each form of asexual reproduction. Offsets and bulbils showed an overall decrease in methylation whereas in vitro cultured plants showed patterns specific to each generation: Generations 1 and 4 showed overall demethylation whereas Generations 2 and 3 showed increased methylation. Analysis of ESTs associated with transposable elements revealed higher proportions of ESTs from Ty1-copia-like, Gypsy and CACTA transposable elements in cDNA libraries obtained from pluripotent tissue suggesting a possible correlation between methylation patterns, expression of transposable element associated genes and somaclonal variation.

  10. EFEKTIVITAS KINERJA MEDIA BIOFILTER DALAM SISTEM RESIRKULASI TERHADAP KUALITAS AIR UNTUK PERTUMBUHAN DAN SINTASAN IKAN RED RAINBOW (Glossolepis incisus Weber

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    Nurhidayat Nurhidayat

    2012-08-01

    Full Text Available Penelitian ini bertujuan untuk mengetahui efektivitas kinerja media biofilter zeolit dan bioball dalam perbaikan kualitas air yang akan meningkatkan pertumbuhan dan sintasan ikan red rainbow (Glossolepis incisus Weber pada sistem resirkulasi. Wadah percobaan berupa akuarium dengan ukuran 100 cm x 60 cm x 40 cm sebanyak 24 buah, masing-masing ditebar ikan sebanyak 60 ekor/akuarium. Ikan uji yang digunakan dengan bobot awal 0,71 g dan panjang 3,51 cm. Perlakuan yang digunakan dalam percobaan adalah media biofilter: A. zeolit 100%, B. zeolit 75% + bioball 25%, C. zeolit 50% + bioball 50%, D. zeolit 25% + bioball 75%, E. bioball 100%, dan F. kontrol. Pakan yang digunakan adalah pelet komersial, diberikan 5% dari bobot total ikan yang diberikan sebanyak tiga kali (pagi, siang, dan sore. Percobaan disusun dalam Rancangan Acak Lengkap (RAL, dengan enam perlakuan yang diulang sebanyak empat kali. Hasil pengamatan perlakuan media biofilter zeolit 75% + bioball 25% memberikan kualitas air terbaik dengan kualitas baik (kategori IV, dengan efektivitas oksidasi amonia sebesar 95,03±0,31% dan biomassa bakteri non patogen (nitrifikasi dengan jumlah koloni (8,6±1,91 x 106. Pertumbuhan panjang total dan sintasan yang diperoleh 66,67% (2,34 cm dan 96,67%.

  11. Application of Heuristic and Metaheuristic Algorithms in Solving Constrained Weber Problem with Feasible Region Bounded by Arcs

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    Igor Stojanović

    2017-01-01

    Full Text Available The continuous planar facility location problem with the connected region of feasible solutions bounded by arcs is a particular case of the constrained Weber problem. This problem is a continuous optimization problem which has a nonconvex feasible set of constraints. This paper suggests appropriate modifications of four metaheuristic algorithms which are defined with the aim of solving this type of nonconvex optimization problems. Also, a comparison of these algorithms to each other as well as to the heuristic algorithm is presented. The artificial bee colony algorithm, firefly algorithm, and their recently proposed improved versions for constrained optimization are appropriately modified and applied to the case study. The heuristic algorithm based on modified Weiszfeld procedure is also implemented for the purpose of comparison with the metaheuristic approaches. Obtained numerical results show that metaheuristic algorithms can be successfully applied to solve the instances of this problem of up to 500 constraints. Among these four algorithms, the improved version of artificial bee algorithm is the most efficient with respect to the quality of the solution, robustness, and the computational efficiency.

  12. Early diagnosis of cerebral involvement in Sturge-Weber syndrome using high-resolution BOLD MR venography

    Energy Technology Data Exchange (ETDEWEB)

    Mentzel, Hans-J.; Fitzek, Clemens; Reichenbach, Juergen R.; Kaiser, Werner A. [Friedrich-Schiller-University Jena, Institute of Diagnostic and Interventional Radiology, Department of Pediatric Radiology, Jena (Germany); Dieckmann, Andrea; Brandl, Ulrich [Friedrich-Schiller-University Jena, Department of Neuropediatrics, Jena (Germany)

    2005-01-01

    Sturge-Weber syndrome (SWS) is a congenital disorder characterized by a vascular birthmark and neurological abnormalities. Typical imaging findings using MRI or CT are superficial cerebral calcification, atrophy and leptomeningeal enhancement. We present a neonate diagnosed with SWS because of a port-wine stain. In the absence of neurological symptoms the first MRI was performed when he was 4 months old, and follow-up MRI studies were performed after his first seizure at the age of 12 months. MRI was performed using standard sequences before and after administration of IV gadolinium. A high-resolution T2*-weighted, rf-spoiled 3D gradient-echo sequence with first-order flow compensation in all three directions was used for additional venographic imaging [blood-oxygen-level-dependent (BOLD) venography]. The initial conventional MRI sequences did not demonstrate any abnormality, but BOLD venography identified leptomeningeal internal veins. Follow-up MRI after the first onset of seizures demonstrated strong leptomeningeal enhancement, while BOLD venography revealed pathological medullary and subependymal veins as well as deep venous structures. At this time there were the first signs of atrophy and CT showed marginal calcifications. This report demonstrates that high-resolution BOLD MR venography allows early diagnosis of venous anomalies in SWS, making early therapeutic intervention possible. (orig.)

  13. Síndrome de Sturge-Weber: relato de caso dos achados da avaliação fonoaudiológica Sturge-Weber syndrome: a case report on the results of the phonoaudiological evaluation

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    Sara Virgínia Paiva Santos

    2010-02-01

    Full Text Available TEMA: avaliação fonoaudiológica em síndrome de rara ocorrência. PROCEDIMENTOS: descrever o desempenho apresentado na avaliação fonoaudiológica clínica de uma paciente com diagnóstico genético de Síndrome de Sturge-Weber. Para isso, utilizou-se de avaliação da motricidade e funções orofaciais, das habilidades pragmática e semântica da linguagem oral, processos perceptuais visual e auditivo, funções cognitivas e aplicação do Denver II. RESULTADOS: na avaliação da motricidade orofacial a paciente apresentou anomalias de estruturas ósseas da face, inadequação quanto à morfologia, mobilidade e tônus de todos os órgãos fonoarticulatórios, presença de reflexos de procura e sucção primitivos. Na avaliação das habilidades pragmática e semântica da linguagem oral, processos perceptuais visual e auditivo, funções cognitivas, a paciente apresentou exploração sensoriomotora, com pouca interação e atenção compartilhada e dificuldade de contato de olhos; comunicação predominantemente gestual, não havendo registros de atos comunicativos verbais. Apresentou funções comunicativas de pedido de ação, exclamativa, exploratória e protesto, e grande uso de função não focalizada. A compreensão oral mostrou-se alterada, gestos representativos esporádicos, processos perceptuais funcionais e lateralidade indefinida. No Denver II, falhou nas áreas pessoal-social, linguagem, motor fino e grosseiro. CONCLUSÃO: a paciente apresentou diagnóstico fonoaudiológico de Distúrbio de Linguagem e Disfagia Neurogênica Orofaríngea moderada sendo necessária intervenção fonoaudiológica a fim de maximizar a comunicação, bem como adequar as estruturas e funções motoras orofaciais.BACKGROUND: phonoaudiological evaluation of rare occurrence syndrome. PROCEDURES: describe the performance shown in phonoaudiological clinical evaluation of a patient with genetic diagnosis of Sturge-Weber Syndrome. Evaluation of the drive

  14. Determinación de algunas propiedades físicas de Agave tequilana Weber para mecanizar la cosecha Determination of some physical properties of Agave tequilana Weber for mechanizing crop

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    Alberto Saldaña Robles

    2012-06-01

    Full Text Available En el estudio realizado se determinaron algunas propiedades físicas (dimensiones y pesos de la planta de Agave tequilana Weber y de sus elementos por separado (piña, hojas y raíz empleando instrumentos básicos de medición, así como también se cuantificó la energía unitaria requerida para el corte de las hojas. Estos parámetros se emplearán en el diseño de una cosechadora- troceadora de agave. El estudio se realizó en noviembre de 2010 en la comunidad "El Copal", municipio de Irapuato, Guanajuato, México. Para cuantificar la energía unitaria se evaluaron dos parámetros. El primer parámetro fue la energía que requiere el corte de la hoja de agave, dicha energía se evaluó en 10 posiciones a lo largo de una hoja de aproximadamente 1 m, realizando 4 repeticiones. Para esto se empleó un dispositivo que aplica caída libre. El segundo parámetro fue el área de la sección transversal, en las mismas posiciones de hoja donde se determinó la energía de corte, para lo cual se empleó visión artificial. De esta información se calculó la energía unitaria, resultando un valor promedio de 2.50 J-cnr². Las propiedades físicas evaluadas presentan una gran variabilidad. La media de los resultados obtenidos concuerda con lo obtenido por otros autores(as. Se encontró que existe una relación bien definida entre: energía de corte, área de la sección transversal de la hoja y la posición de la sección a lo largo de la hoja, a medida que una de las variables aumenta la otra incrementa de acuerdo a un polinomio de segundo orden.In this study some physical properties (dimensions and weights of Agave tequilana Weber plant were determined and of their individual elements (pineapple, leaves and root using basic measuring devices, as well it was measured unitary energy required for leaves cut. These parameters would be used in the design of agave's harvester-shredder. The study was made at "El Copal", municipality of Irapuato, Guanajuato

  15. Síndrome de Rendu-Osler-Weber: presentación de un caso clínico

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    Freyli Bustamante

    2016-08-01

    Full Text Available El síndrome de Rendu-Osler-Weber (SROW, conocido también como Telangiectasia Hemorrágica Hereditaria (THH, es un desorden vascular infrecuente. Se trata de una alteración vascular displásica multisistémica de carácter autosómico dominante, con diversas complicaciones, siendo las malformaciones arterio-venosas (MAV responsables de la morbi-mortalidad de los pacientes cuando no son diagnosticadas ni tratadas a tiempo. Muchas veces este síndrome presenta síntomas sutiles, por lo que puede pasar desapercibida clínicamente. Presentamos un caso de una paciente femenina de 51 años, con historia de epistaxis frecuentes quien acude a nuestro hospital por presentar cefalea de fuerte intensidad, meningismo y pérdida de la consciencia. La tomografía axial computada (TAC de cráneo identificó hemorragia sub aracnoidea (HSA difusa. La angiografía cerebral permitió identificar aneurisma arteria comunicante anterior (AcoA roto que fue tratado por vía endovascular, sin eventualidades. Además, se observó telangectasias mucosas nasales múltiples y fistula arterio-venosa (FAV dural occipital izquierda. Estudios ulteriores permitieron identificar MAV pulmonares múltiples. Se confirmó el diagnóstico de SROW, con criterios de diagnóstico vigentes (criterios de Curazao. Durante los tres meses posteriores a su egreso el paciente presentó hemoptisis severa y disnea, que no pudo ser tratada a tiempo por lo que falleció.

  16. La comunidad según Max Weber: desde el tipo ideal de la Vergemeinschaftung hasta la comunidad de los combatientes

    Directory of Open Access Journals (Sweden)

    Pablo de Marinis

    2010-01-01

    Full Text Available La problematización de la comunidad es omnipresente en la contemporaneidad. Tanto en la forma de artefactos construidos "desde arriba" por la programática estatal, como en la forma de agrupamientos identitarios conformados "desde abajo", proliferan por doquier las referencias comunitarias. Pero no es la primera vez que esto sucede: también a finales del siglo XIX y comienzos del XX la problemática de la comunidad estaba al orden del día en la agenda político-intelectual. De maneras diversas, los sociólogos clásicos intentaron dar cuenta de ella. Este texto pondrá el foco en el pensamiento de Max Weber. Allí, no sólo se verá una concepción de la comunidad entendida como antecedente histórico de la sociedad moderna (rasgo que justamente las historias de la sociología suelen enfatizar en mayor medida, sino también otras dos nociones de la comunidad: en una, ella aparece como concepto sociológico fundamental, como un tipo ideal abstracto y general de relaciones sociales; en la otra, la comunidad adquiere un carácter político-utópico de primer rango, y es el nombre que se le pone a aquellos acontecimientos que quizás puedan recalentar el lazo social en un contexto societal signado por la racionalización y el desencanto. De la mano de este análisis, se espera encontrar en aquellas viejas elaboraciones weberianas alguna inspiración para comprender los perfiles de estas variadas configuraciones comunitarias del presente.

  17. Spreading of an inkjet droplet on a solid surface with a controlled contact angle at low Weber and Reynolds numbers.

    Science.gov (United States)

    Son, Yangsoo; Kim, Chongyoup; Yang, Doo Ho; Ahn, Dong June

    2008-03-18

    Even though the inkjet technology has been recognized as one of the most promising technologies for electronic and bio industries, the full understanding of the dynamics of an inkjet droplet at its operating conditions is still lacking. In this study, the normal impact of water droplets on solid substrates was investigated experimentally. The size of water droplets studied here was 46 microm and was much smaller than the most of the previous studies on drop impact. The Weber number (We) and Reynolds number (Re) were 0.05-2 and 10-100, respectively, and the Ohnesorge number was fixed at 0.017. The wettability of the solid substrate was varied by adsorbing a self-assembled monolayer of octadecyltrichlorosilane followed by the exposure to UV-ozone plasma. The impact scenarios for low We impacts were found to be qualitatively different from the high to moderate We impacts. Neither the development of a thin film and lamella under the traveling sphere nor the entrapment of small bubbles was observed. The dynamics of droplet impact at the conditions studied here is found to proceed under the combined influences of inertia, surface tension, and viscosity without being dominated by one specific mechanism. The maximum spreading factor (beta), the ratio of the diameter of the wetted surface and the drop diameter before impact, was correlated well with the relationship ln beta=0.090 ln We/(fs-cos theta)+0.151 for three decades of We/(fs-cos theta), where theta is the equilibrium contact angle, and fs is the ratio between the surface areas contacting the air and the solid substrate. The result implies that the final shape of the droplet is determined by the surface phenomenon rather than fluid mechanical effects.

  18. Significant variations in Weber fraction for changes in inter-onset interval of a click train over the range of intervals between 5 and 300 ms.

    Science.gov (United States)

    Ungan, Pekcan; Yagcioglu, Suha

    2014-01-01

    It is a common psychophysical experience that a train of clicks faster than ca. 30/s is heard as one steady sound, whereas temporal patterns occurring on a slower time scale are perceptually resolved as individual auditory events. This phenomenon suggests the existence of two different neural mechanisms for processing of auditory sequences with fast and slow repetition rates. To test this hypothesis we used Weber's law, which is known to be valid for perception of time intervals. Discrimination thresholds and Weber fractions (WFs) for 12 base inter-click intervals (ICIs) between 5 and 300 ms were measured from 10 normal hearing subjects by using an "up-down staircase" algorithm. The mean WF, which is supposed to be constant for any perceptual mechanism according to Weber's law, displayed significant variation with click rate. WFs decreased sharply from an average value of around 5% at repetition rates below 20 Hz to about 0.5% at rates above 67 Hz. Parallel to this steep transition, subjects reported that at rates below 20 Hz they perceived periodicity as a fast tapping rhythm, whereas at rates above 50 Hz the perceived quality was a pitch. Such a dramatic change in WF indicated the existence of two separate mechanisms for processing the click rate for long and short ICIs, based on temporal and spectral features, respectively. A range of rates between 20 and 33 Hz, in which the rate discrimination threshold was maximum, appears to be a region where both of the presumed time and pitch mechanisms are relatively insensitive to rate alterations. Based on this finding, we speculate that the interval-based perception mechanism ceases to function at around 20 Hz and the spectrum-based mechanism takes over at around 33 Hz; leaving a transitional gap in between, where neither of the two mechanisms is as sensitive. Another notable finding was a significant drop in WF for ICI = 100 ms, suggesting a connection of time perception to the electroencephalography alpha rhythm.

  19. Aportaciones de la mitología nórdica para comprender la modernidad: revisión de Max Weber

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    Maximiliano Emanuel Korstanje

    2012-06-01

    Full Text Available La antropología nos ha enseñado que se pueden alcanzar interesantes conclusiones cuando se llevan a cabo estudios en forma interdisciplinar y cuando se observa las diferencias de los “otros” desde una posición “de nativo”. Además, la diferencia de estos otros puede ser contrastada con las “nuestras” y de esa forma conocer las contradicciones y estructuraciones de la cultura en forma introspectiva. En concordancia con ello y luego del desarrollo expuesto, consideramos oportuno señalar que Max Weber ha omitido, en parte por razones que desconocemos el rol de la mitología germánica antigua en la configuración del Ethos Protestante. Misteriosamente o mejor dicho por la propia influencia familiar, el profesor de Friburgo giró su cabeza hacia el mundo de la piedad, la humildad y la predestinación insertas en la reforma. Si bien nuestro sociólogo no equivocó la identificación de los elementos que han conformado al capitalismo, evitó claramente formular mayores consideraciones sobre el papel de la mitología germánica de la antigüedad clásica en el pensamiento indo-europeo. En ese contexto, nuestro artículo pretende ser una contribución que sea desarrollada en futuros abordajes por otros autores.Palabras Claves: Weber; Capitalismo; Secularización; Modernidad; Mitología Germánica._________________________AbstractAnthropology has taught us that interesting conclusions can be reached when carrying out interdisciplinary studies. Also, when looking at the differences in the "other" from a position "native". Furthermore, unlike these others may be contrasted with "our". In this connection, it should be noted that Max Weber has omitted the role of the ancient germanic mythology in shaping the protestant ethos. By family influence, Professor of Freiburg turned his head toward the world of piety, and predestination own reform. Although no mistake in identifying the elements that have made capitalism, avoided making further

  20. Historicismo, sujeto y moral (Max Weber y el «mito de la transparencia de la razón»)

    OpenAIRE

    Valdecantos, Antonio

    1990-01-01

    Not available

    Recurso frecuente de lo que hoy reconstruimos como Ilustración fue desarbolar supersticiones y mitos. Es, sin embargo. lugar común redargüir que quien derriba ídolos no está libre de edificar otros nuevos (ni -tópico éste que cunde por doquier- de convertir su gesto iconoclasta en mito fundacional). No menos acostumbrado es apuntar a Max Weber como al primer desvelador de algún que otro episodio sobresaliente de la historia de la razón ilustrada, ya sea para a...

  1. A sociologia de Max Weber: sua import??ncia para a teoria e a pr??tica da administra????o

    OpenAIRE

    Ramos, Guerreiro

    2006-01-01

    A tradu????o integral da obra de Max Weber ??? Wirtschaft und Gesellschaft ??? empreendida pela editora mexicana ??? Fondo de Cultura Econ??mica, sob a esclarecida dire????o de Jos?? Medina Echavarr??a, ?? um acontecimento a cuja magnitude esta Revista n??o pode permanecer indiferente. ?? esta a primeira vez que a referida obra aparece em l??ngua diferente da original, pois a anunciada tradu????o do seu primeiro volume, realizada por Parsons-Henderson, n??o foi editada...

  2. Trabajo, estética de la producción y escenas sociales. Etnografías multi-integradas de Florence Weber

    OpenAIRE

    Gonzalo Assusa

    2014-01-01

    Trabalho fora do trabalho (2009) fue por primera vez publicado en 1989 en idioma francés, con el título Le travail à côté. Etude d'ethnographie ouvrière. Esta obra de Florence Weber es resultado de una investigación etnográfica realizada durante finales de la década de 1970 y principios de la de 1980, en la villa industrial de Montbard, en el medio rural francés. El libro se organiza en tres partes. La primera presenta los principios metodológicos que informaron esta etnografía, la reflexivid...

  3. Anatomy of Brazilian Cereeae (subfamily Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger and Brasilicereus Backeberg Anatomia de espécies brasileiras pertencentes à tribo Cereeae (subfamília Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger and Brasilicereus Backeberg

    Directory of Open Access Journals (Sweden)

    Patricia Soffiatti

    2007-12-01

    Full Text Available (Anatomy of Brazilian Cereeae (subfamily Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger wâBrasilicereus Backeberg. Arrojadoa, Stephanocereus and Brasilicereus are endemic Brazilian Cereeae, occurring along the Espinhaço Range, in the campos rupestres, cerrados and caatingas, from northern Minas Gerais to southern Bahia. The genera are columnar, erect to semi-erect cacti, except for one species, A bahiensis, which is globose. This study describes the anatomy of dermal, fundamental and vascular systems, aiming to find diagnostic characters for the genera and species. Basal portions of stems were sectioned transversely and longitudinally, and stained with Astrablue and Safranin. The species share a uniseriate epidermis, with thick cuticle; well developed collenchymatic hypodermis, containing prismatic crystals; cortex with numerous mucilage cells, druses and vascular bundles; outside cortex as a palisade parenchyma; periderm composed of lignified cork cells alternating with suberized cells; pheloderm consisting of a few layers of thin-walled cells; phloem composed of solitary or multiple of two to three sieve tube elements, companion cells, axial and radial parenchyma; secondary xylem with solitary to multiple vessels, with simple perforation plates and alternate bordered to semi-bordered pits; axial parenchyma scanty vasicentric to incomplete; libriform septate fibres; large rays. Unlignified parenchyma is seen in the secondary xylem, varying from a few cells to bands among axial and radial elements. The following are considered diagnostic characters: the shape of lignified phellem cells, cubic to radially elongate, which individualizes S. leucostele; an underdeveloped hypodermis and the occurrence of sclereids in the cortex are exclusive to Brasilicereus markgrqfii.(Anatomia de espécies brasileiras pertencentes à tribo Cereeae (subfamília Cactoideae, Cactaceae: Arrojadoa Britton & Rose, Stephanocereus A. Berger and

  4. Padrões de isozimas de malato desidrogenase em população clonal nos cladófilos de Opuntia ficus-indica Mill (Cactaceae - DOI: 10.4025/actascibiolsci.v25i1.2093 Malate dehydrogenase isozyme patterns in cladophylls of a Opuntia ficus-indica Mill. (Cactaceae clonal population - DOI: 10.4025/actascibiolsci.v25i1.2093

    Directory of Open Access Journals (Sweden)

    Alexandro Cezar Faleiro

    2003-04-01

    Full Text Available Isozimas de malato desidrogenase (MDH foram usadas como marcadores moleculares para discriminar e agrupar cladófilos de plantas de uma população clonal de cactus da espécie Opuntia ficus-indica (Cactaceae, conhecida como palma. O padrão eletroforético obtido revelou 8 isozimas MDH e 5 fenótipos eletroforéticos diferentes. A similaridade entre os cladófilos foi estimada usando o coeficiente de similaridade de Jaccard. Essa população clonal estudada foi fundada por somente um propágulo e, após 50 anos, parece ser formada por propágulos assexuais e sexuais. Uma vez que a expressão diferencial de isozimas MDH pode ter um papel significante no metabolismo das células da planta, sugerimos que os cladófilos de palma que foram agrupados com os mais altos valores de similaridade são os mais adequados para serem utilizados em procedimentos de extração industrial de compostos de interesse comercial, porque um mesmo protocolo de extração pode ser mais rapidamente e facilmente padronizado quando se utiliza material geneticamente uniforme. O padrão eletroforético das isozimas MDH pode ser usado como uma ferramenta efetiva para uma análise prévia da similaridade genética entre os cladófilos das plantas de O. ficus-indicaMalate dehydrogenase (MDH isozymes were used as biochemical markers to discriminate and cluster cladophylls of plants of one clonal population of the prickly pear, Opuntia ficus-indica (Cactaceae. The isozyme electrophoretic patterns obtained with MDH provided 8 isozymes and 5 different electrophoretic phenotypes. Similarity in cladophylls was estimated using Jaccard’s coefficient. This clonal population studied was founded by only one propagule, and after 50 years, it is likely to have been formed by asexual and sexual propagules. Since that differential expression of MDH isozymes could play a significant role in overall plant cell metabolism, we suggest that the cladophylls of prickly pear that were clustered

  5. How is the Self in Modernity Possible:A comparison between Simmel and Weber%现代性自我如何可能:齐美尔与韦伯的比较

    Institute of Scientific and Technical Information of China (English)

    王小章

    2004-01-01

    The self-practice in a modern society--that is, how to fulfill “self”, “personality” or “individuality”--not only has to face the oppression and control of the outside, objective world, but also has to face subjective, spiritual emptiness and lacking support after the death of religion. This is a common dilemma that both Simmel and Weber faced. The difference between Simmel and Weber lies in that Simmel, via his life philosophy, lodged the values that led individuals in modern society to holding their self-practice and fulfillment of their unique characteristics in their innovative and living lives of essence. In contrast, Weber hoped, in a sense, to revive puritans' conception of “vocation” so as to lead individuals to dedicate themselves to a particular undertaking to fulfill their “personality”.

  6. 韦伯论中国的社会和宗教%Weber's Opinions on China's Society and Religion

    Institute of Scientific and Technical Information of China (English)

    任志安

    2006-01-01

    马克斯·韦伯(Max Weber)在其引起强烈反响的《新教伦理与资本主义精神》一书中提出并验证了一个著名的社会学假设:透过任何一项事业的表象,可以在其背后发现有一种无形的、支撑这一事业的时代精神力量,这种以社会精神气质为表现的时代精神与特定社会的文化背景某种内在的渊源关系,在一定条件下,这种精神力量决定着这项事业的成败.与资本主义精神的动力分析相对应的是韦伯在《儒教与道教》中对于中国社会和宗教所作的出色研究.韦伯的论点为:中国自秦代以来拥有统一帝国式的持久和平,人民有广泛的迁徙自由,货币经济也十分发达,远古时代就出现了世界上最大的城市,但理性化的经济秩序并未在这片国土上产生出来,原因在于中国特有的家产制的官僚制及其掠夺性的政治资本主义;其二是儒教和道教的精神特质阻碍了包括信任关系在内的经济理性化的发展,使一种新的社会形态胎死中.韦伯的分析认为:受儒教和道教浸淫的中国人的独特精神气质使得制度创新和理性化丧失动力.从这个意义上说,韦伯的观点对我们是富有启迪的.

  7. De la disolución a la recreación de la comunidad. Un contrapunto entre Max Weber y François Perroux

    Directory of Open Access Journals (Sweden)

    Victoria Haidar

    2010-01-01

    Full Text Available En La situación de los trabajadores agrícolas al Este del Elba. Visión General (1892 Max Weber analiza la crisis de la comunidad de intereses que ligaba a los junkers y los aparceros para encontrar en el proyecto de formación de la nación, un antídoto contra las tendencias sociales disolventes. En Capitalismo y comunidad de trabajo (1938 François Perroux intenta conjurar la cuestión social y transformar el Estado, inyectando al mercado una dimensión comunitaria. Ambos autores problematizaron la misma falta de organización del trabajo, de un orden que, al vincular a trabajadores y capitalistas en sentidos, prácticas y relaciones comunes restringiera las posibilidades de conflicto. Este artículo circunscribe la respuesta común que Weber y Perroux ofrecieron frente a ese problema, esto es, la cuestión de la comunidad. Así, en los sucesivos apartados se discuten las características y las funciones atribuidas a la comunidad; su relación con el individuo y el papel conferido a la comunidad nacional organizada por el Estado, para plantear, finalmente, algunas conclusiones.

  8. Cascaded lattice Boltzmann method with improved forcing scheme for large-density-ratio multiphase flow at high Reynolds and Weber numbers.

    Science.gov (United States)

    Lycett-Brown, Daniel; Luo, Kai H

    2016-11-01

    A recently developed forcing scheme has allowed the pseudopotential multiphase lattice Boltzmann method to correctly reproduce coexistence curves, while expanding its range to lower surface tensions and arbitrarily high density ratios [Lycett-Brown and Luo, Phys. Rev. E 91, 023305 (2015)PLEEE81539-375510.1103/PhysRevE.91.023305]. Here, a third-order Chapman-Enskog analysis is used to extend this result from the single-relaxation-time collision operator, to a multiple-relaxation-time cascaded collision operator, whose additional relaxation rates allow a significant increase in stability. Numerical results confirm that the proposed scheme enables almost independent control of density ratio, surface tension, interface width, viscosity, and the additional relaxation rates of the cascaded collision operator. This allows simulation of large density ratio flows at simultaneously high Reynolds and Weber numbers, which is demonstrated through binary collisions of water droplets in air (with density ratio up to 1000, Reynolds number 6200 and Weber number 440). This model represents a significant improvement in multiphase flow simulation by the pseudopotential lattice Boltzmann method in which real-world parameters are finally achievable.

  9. Ecos da contribuição de Guerreiro Ramos para a divulgação da obra de Weber no campo de estudos organizacionais (EOs

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    Leonor Moreira Camara

    2012-02-01

    Full Text Available Em 1946, Guerreiro Ramos publica a resenha "A sociologia de Max Weber - sua importância para a teoria e a prática da administração", na Revista do Serviço Público - RSP. Nela, mais do que apresentar ao leitor a obra de Weber Economia e sociedade, com foco em sua metodologia, também procura demonstrar sua aplicabilidade no trato das questões da administração pública e sua relevância num país "culturalmente colonial" como o Brasil. A considerar as especificidades da produção de conhecimento no campo de estudos organizacionais e o fato de Guerreiro Ramos expressar, no ensaio, uma visão que não é a que prevaleceu no campo, mas que é fiel à sociologia compreensiva e à metodologia ideal-típica, cabe aqui o esforço de reiterar o referido trabalho de Guerreiro Ramos a partir da proposição de uma discussão de caráter teórico conceitual com base no conteúdo resenhado relacionado à construção metodológica da crítica ideal-típica.

  10. Ophthalmic Alterations in the Sturge-Weber Syndrome, Klippel-Trenaunay Syndrome, and the Phakomatosis Pigmentovascularis: An Independent Group of Conditions?

    Directory of Open Access Journals (Sweden)

    Solmaz Abdolrahimzadeh

    2015-01-01

    Full Text Available The phakomatoses have been traditionally defined as a group of hereditary diseases with variable expressivity characterized by multisystem tumors with possible malignant transformation. The Sturge-Weber syndrome, Klippel-Trenaunay syndrome, and the phakomatosis pigmentovascularis have the facial port-wine stain in common. Numerous pathophysiogenetic mechanisms have been suggested such as venous dysplasia of the emissary veins in the intracranial circulation, neural crest alterations leading to alterations of autonomic perivascular nerves, mutation of the GNAO gene in the Sturge-Weber syndrome, PIK3CA mutation in malformative/overgrowth syndromes such as the Klippel-Trenaunay syndrome, and the twin-spotting phenomenon in phakomatosis pigmentovascularis. Other features linked to the port-wine stain and typical to all of the three conditions are glaucoma and choroidal alterations. Glaucoma can be due to malformations of the anterior chamber or high episcleral venous pressure and in phakomatosis pigmentovascularis it can also be associated with angle hyperpigmentation. The choroid can be thickened in all diseases. Furthermore, choroidal melanocytosis in the phakomatosis pigmentovascularis can lead to malignant transformation. Although the multiple pathophysiological mechanisms still require clarification, similarities in ophthalmic manifestations make it reasonable to classify these diseases in an independent group.

  11. Cascaded lattice Boltzmann method with improved forcing scheme for large-density-ratio multiphase flow at high Reynolds and Weber numbers

    Science.gov (United States)

    Lycett-Brown, Daniel; Luo, Kai H.

    2016-11-01

    A recently developed forcing scheme has allowed the pseudopotential multiphase lattice Boltzmann method to correctly reproduce coexistence curves, while expanding its range to lower surface tensions and arbitrarily high density ratios [Lycett-Brown and Luo, Phys. Rev. E 91, 023305 (2015), 10.1103/PhysRevE.91.023305]. Here, a third-order Chapman-Enskog analysis is used to extend this result from the single-relaxation-time collision operator, to a multiple-relaxation-time cascaded collision operator, whose additional relaxation rates allow a significant increase in stability. Numerical results confirm that the proposed scheme enables almost independent control of density ratio, surface tension, interface width, viscosity, and the additional relaxation rates of the cascaded collision operator. This allows simulation of large density ratio flows at simultaneously high Reynolds and Weber numbers, which is demonstrated through binary collisions of water droplets in air (with density ratio up to 1000, Reynolds number 6200 and Weber number 440). This model represents a significant improvement in multiphase flow simulation by the pseudopotential lattice Boltzmann method in which real-world parameters are finally achievable.

  12. De la disolución a la recreación de la comunidad. Un contrapunto entre Max Weber y François Perroux

    Directory of Open Access Journals (Sweden)

    Victoria Haidar

    2010-03-01

    Full Text Available En La situación de los trabajadores agrícolas al Este del Elba. Visión General (1892 Max Weber analiza la crisis de la comunidad de intereses que ligaba a los junkers y los aparceros para encontrar en el proyecto de formación de la nación, un antídoto contra las tendencias sociales disolventes. En Capitalismo y comunidad de trabajo (1938 François Perroux intenta conjurar la cuestión social y transformar el Estado, inyectando al mercado una dimensión comunitaria. Ambos autores problematizaron la misma falta de organización del trabajo, de un orden que, al vincular a trabajadores y capitalistas en sentidos, prácticas y relaciones comunes restringiera las posibilidades de conflicto. Este artículo circunscribe la respuesta común que Weber y Perroux ofrecieron frente a ese problema, esto es, la cuestión de la comunidad. Así, en los sucesivos apartados se discuten las características y las funciones atribuidas a la comunidad; su relación con el individuo y el papel conferido a la comunidad nacional organizada por el Estado, para plantear, finalmente, algunas conclusiones.

  13. WEBER E O CONSUMO DE LUXO: UMA DISCUSSÃO SOBRE A OBRA A ÉTICA PROTESTANTE E O ESPÍ­RITO DO CAPITALISMO

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    Priscilla Schramm Portugal

    2007-12-01

    Full Text Available A importância do trabalho do sociólogo Max Weber é inegável na história das Ciências Sociais, mas será que a partir de sua obra, intitulada A ética protestante e o espírito do capitalismo, é possível explicar o consumo de luxo atual? Neste artigo, serão apresentadas algumas críticas feitas ao livro por estudiosos que acreditam que o seu autor tenha desprezado fatos importantes que influenciaram a sociedade no século XVII, tais como a moda, a valorização do amor romântico e a mentalidade européia de modo geral. Campbell, por exemplo, afirma que esse recorte histórico faz com que Weber não leve em consideração mudanças sociais importantes. Se na época em que foi escrito, o livro já não era suficiente para explicar o consumo de luxo, tal fato se torna mais evidente na atualidade, em que o ascetismo já não predomina nas sociedades ocidentais, e até países em desenvolvimento se renderam ao consumo de artigos de luxo.

  14. Perfil epidemiológico de 58 portadores de síndrome de Klippel-Trénaunay-Weber acompanhados no Ambulatório da Santa Casa de São Paulo Epidemiological profile of 58 patients with Klippel-Trenaunay-Weber syndrome followed at Ambulatório da Santa Casa de São Paulo

    Directory of Open Access Journals (Sweden)

    André Luis Costa Villela

    2009-09-01

    Full Text Available CONTEXTO: A síndrome de Klippel-Trénaunay-Weber é uma doença rara sobre a qual encontramos poucos artigos na literatura (geralmente relatos de casos esporádicos relacionados a complicações. OBJETIVO: Avaliar o perfil epidemiológico dos portadores da referida síndrome. MÉTODOS: Foram copilados dados dos prontuários de 58 pacientes acompanhados no ambulatório de doenças linfáticas e angiodisplasias da disciplina de Cirurgia Vascular da Faculdade de Ciências Médicas da Santa Casa de São Paulo. RESULTADOS: A distribuição foi igual entre homens e mulheres (30 homens e 28 mulheres. A idade média dos pacientes em tratamento foi de 12,8 anos. Na maioria dos casos, a doença foi diagnosticada na infância, sendo a mancha em vinho do porto o primeiro sinal notado pela família, no nascimento ou primeiro ano de vida. O sintoma mais referido foi a dor, normalmente relacionada aos sintomas de estase venosa, sendo o sintoma considerado debilitante. Pela classificação CEAP, encontramos as crianças nas classes C0 e C1 e a maioria dos adultos nas classes avançadas. Foi diagnosticada a presença de fístulas arteriovenosas em 8,5% dos casos. Apenas 6,8% referiram história familiar. CONCLUSÃO: A síndrome de Klippel-Trénaunay e a síndrome de Parkes Weber são apresentações diferentes de uma única enfermidade e podem ser estudadas conjuntamente como síndrome de Klippel-Trénaunay-Weber. O melhor momento para reconhecer os portadores e poder amenizar a progressão de insuficiência venosa, hipertrofia óssea e tecidos moles é a infância. O tratamento compressivo deve ser indicado a todos os portadores com o intuito de diminuir a evolução da doença venosa periférica.BACKGROUND: Klippel-Trenaunay-Weber syndrome is a rare disorder about which there are few articles available (most of them are sporadic case reports related to complications. OBJECTIVE: To assess the epidemiological profile of patients with Klippel-Trenaunay-Weber

  15. Roland Weber first part

    DEFF Research Database (Denmark)

    2016-01-01

    The Sooty bloch complex - species identity, infection biology and control options. Rubbery rot and Black summer rot - two new diseases of apple......The Sooty bloch complex - species identity, infection biology and control options. Rubbery rot and Black summer rot - two new diseases of apple...

  16. TERRAIN, WEBER COUNTY, USA

    Data.gov (United States)

    Federal Emergency Management Agency, Department of Homeland Security — Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to create...

  17. Una revisión histórica de los métodos clásicos de resolución del problema de Fermat-Weber.

    Directory of Open Access Journals (Sweden)

    Ma Belén Cobacho Tornel

    2004-01-01

    Full Text Available El problema de Weber consiste en calcular la localizaci´on ´optima de un punto de modo que sea m´ınima la suma ponderada de las distancias desde dicho punto a un conjunto de puntos dados. Este problema, que tiene su aplicacion economica en el ambito de la localizaci´on y que ha sido ampliamente tratado en la literatura cientıfica, tiene como origen una cuestion matematica formulada en el siglo XVII por Fermat. Los primeros algoritmos de resolucion, propuestos por Torricelli y Simpson, estaban basados en razonamientos puramente geometricos, aunque tambien es destacable la existencia la denominada m´aquina de Varignon, un ingenio mecanico que permite determinar el ´optimo del problema de Weber. A pesar de que estos m´etodos son citados en numerosas fuentes bibliograficas, las demostraciones de los teoremas en los que se sustentan no son tan accesibles para investigadores y docentes por tratarse de textos clasicos con varios siglos de antig¨uedad. En este trabajo, ademas de realizar una revisi´on de diversos m´etodos empleados a lo largo de la historia para resolver el problema de Weber, se presentan demostraciones basadas en argumentos geometricos y fısicos que demuestran la veracidad de estos algoritmos, ası como algunas conclusiones y deducciones sobre el problema de Weber que se extraen de los razonamientos presentados.

  18. DIAGNÓSTICO TARDÍO DE INTOXICACIÓN POR FENITOÍNA EN UN PACIENTE CON SÍNDROME DE STURGE-WEBER

    Directory of Open Access Journals (Sweden)

    Yesenia M Huerta-Collado

    2013-07-01

    Full Text Available Introducción: La Fenitoína es un fármaco antiepiléptico utilizado comúnmente en crisis focales y tónico-clónicas generalizadas. Este fármaco tiene una cinética no lineal compleja, alta unión a proteínas y una ventana terapéutica estrecha, por lo cual la intoxicación se convierte en un riesgo latente. El cuadro clínico de intoxicación por fenitoína está conformado por alteración de la función cerebelosa y vestibular, somnolencia, debilidad generalizada, visión bo­rrosa, movimientos coreo-atetósicos y coma. Caso clínico: Paciente masculino de 20 años de edad con diagnóstico de síndrome de Sturge-Weber asociado a crisis epilépticas parciales complejas tratado con 300 mg de fenitoína diaria durante tres meses, tiempo en el que presenta síntomas progresivos caracterizados por somnolencia, visión borrosa, imposibilidad para la marcha, disartria y movimientos involuntarios coreo-atetósicos que fueron interpretados como parte de su enfermedad hasta antes de su ingreso al Instituto Nacional de Ciencias Neurológicas, Lima, Perú. El paciente ingresa con un título de 75,6 ug/ml de fenitoína en plasma, por lo que se decide el retiro del fármaco y su reemplazo por fenobarbital. El cuadro clínico fue remitiendo conforme disminuían los títulos de fenitoína en el paciente. Interpretación: La evaluación de factores asociados al metabolismo y monitorización periódica de los niveles séricos de fenitoína en los pacientes que reciben este fármaco es crucial, asimismo es importante el conocimiento de síntomas que indiquen toxicidad para que no sean confundidos con manifestaciones presentes en enfermedades subyacentes como el síndrome de Sturge-Weber en este caso. Palabras Clave: Atetosis, Fenitoína, síndrome cerebeloso, síndrome Sturge-Weber, toxicidad

  19. Historicismo, sujeto y moral (Max Weber y el «mito de la transparencia de la razón»

    Directory of Open Access Journals (Sweden)

    Valdecantos, Antonio

    1990-11-01

    Full Text Available Not available

    Recurso frecuente de lo que hoy reconstruimos como Ilustración fue desarbolar supersticiones y mitos. Es, sin embargo. lugar común redargüir que quien derriba ídolos no está libre de edificar otros nuevos (ni -tópico éste que cunde por doquier- de convertir su gesto iconoclasta en mito fundacional. No menos acostumbrado es apuntar a Max Weber como al primer desvelador de algún que otro episodio sobresaliente de la historia de la razón ilustrada, ya sea para abundar en su diagnóstico, ya para intentar salir de lo que se tiene por su «círculo hechizado ». En lo que sigue, se trata de rastrear algunas de las claves configuradoras de la crítica weberiana de la cultura procurando retrotraer a su desmantelamiento metodológico del ideal historicista, los términos en que elabora su problematízacíón del sujeto rnoderno. La inversión semántica de las categorías centrales de la epistemología y la Weltanschauung del historicísmo alemán decimonónico permite a Max Weber descubrir patologías del paradigma ilustrado allí donde se suele situar un momento de critica del mismo. Siguiendo los pasos de esta estrategia weberiana, nos es posible reconstruir la noción hípostasiada de racionalidad y de sujeto que Weber parece denunciar como tentación dogmática de la razón ilustrada. El programa weberiano constituye así el desenmascaramiento de un relato complaciente de lo moderno -al que llamo el «mito de la transparencia de la razóns-ey sobre ese supuesto cabe releer sus propuestas éticas más controvertidas, en particular la distinción entre «ética de convicción» y "ética de responsabílidad ».

  20. Clinical comparative study of antiglide reconstruction plates by posterior-lateral approach and an-atomical plates by lateral approach in treatment of Danis-Weber type B trimalleolar fractures%后外侧抗滑重建钢板与外侧解剖钢板在治疗Danis-Weber B 型三踝骨折的对比研究

    Institute of Scientific and Technical Information of China (English)

    王冰一; 潘芋钢; 吴学建; 郑飞; 孟祥雷

    2016-01-01

    Objective To investigate the clinical effects of antiglide plates and anatomical plates on Danis-Weber type B trimalleolar fractures. Methods All the 46 Danis-Weber type B trimalleolar fractures meeting the inclusion criteria were treated from June 2011 to August 2013. The 21 patients were treated by antiglide plate via posterolateral approach,the other 25 patients were treated by anatomical plate by posterior approach. The patients undertook a follow-up of 12-36 months,14. 6 months on aver-age. Complications such as infection,nonunion,peroneal tendonitis were observed. Ankle functions were assessed according to the Olerud and Monlander scoring system one year after surgery. All the data inclu-ding injury to operation time,operating room time,hospital stay and ankle joint functional scores,were analyzed with complete randomized design t-test. Results There was no difference in injury to operation time,operating room time,hospital stay or ankle joint functional scores between the two methods. Conclusions For Danis-Weber type B trimalleolar fractures,clinical results between antiglide plates and anatomical plates do not show statistical differences.%目的:对比研究后外侧抗滑重建钢板与外侧解剖钢板治疗 Danis-Weber B 型三踝骨折的临床疗效。方法回顾性分析2011年6月至2013年8月符合纳入标准的46例 Danis-Weber B 型三踝骨折患者的临床资料,21例患者采用后外侧抗滑重建钢板治疗,25例患者采用外侧解剖钢板治疗,术后随访12~36个月,平均14.6个月。观察术后切口感染、骨折不愈合、腓骨肌腱炎等并发症,术后1年应用 Olerud and Monlander 系统对患者进行踝关节功能评分,采用成组设计的 t 检验,对两组受伤至手术时间、手术时间、住院时间以及踝关节功能评分进行评价。结果两组受伤至手术时间、手术时间、住院时间以及踝关节功能评分比较差异均未见统计学意义( P 均>0.05

  1. Fermentación de los fructanos del Agave tequilana Weber Azul por Zymomonas mobilis y Saccharomyces cerevisiae en la producción de bioetanol Fermentation of Agave tequilana Weber Azul fructans by Zymomonas mobilis and Sacchamomyces cerevisiae in the production of bioethanol

    OpenAIRE

    José L Montañez; Juan C Victoria; Rebeca Flores; María Á Vivar

    2011-01-01

    Fructanos contenidos en las bases de las hojas del agave fueron extraídos y utilizados como fuente de carbono a varias concentraciones para la producción de bioetanol. Se usaron dos microorganismos etanolgénicos: la levadura Saccharomyces cerevisiae CDBB-L-331 y la bacteria Zymomona mobilis CDBB-B-603. Las hojas del agave tequilero ( Agave tequilana Weber Azul) constituyen los residuos agrícolas del cultivo y a pesar de su alto contenido de azúcares reductores totales (ART) y a los grandes vo...

  2. Absceso cerebral en paciente con Enfermedad de Rendu-Osler-Weber: Revisión del síndrome a partir de un caso ilustrativo Brain abscess in patient with Rendu-Osler-Weber disease: Revision of the syndrome from an illustrative case

    OpenAIRE

    C. Arcos Sánchez; F.T. Salinas Vela; C. Echeandia Ajamil; M.N. Olmedilla González; A. Garrido Carrión; R. Antón Barca; A.F. Molina Foncea

    2012-01-01

    Introducción: La Enfermedad de Rendu-Osler-Weber o telangiectasia hemorrágica hereditaria (THH) está considerada como una causa rara de ictus en paciente joven. Asimismo la presencia de malformaciones arteriovenosas pulmonares (MAVP) se ha relacionado con la aparición de abscesos cerebrales. Método: Descripción del caso de una paciente de 52 años que, en el contexto de un ataque de migraña, presenta una pérdida de fuerza en hemicuerpo izquierdo acompañada de afectación de la sensibilidad tact...

  3. WEBER E O CONSUMO DE LUXO: UMA DISCUSSÃO SOBRE A OBRA A ÉTICA PROTESTANTE E O ESPÍ­RITO DO CAPITALISMO

    OpenAIRE

    Priscilla Schramm Portugal

    2007-01-01

    A importância do trabalho do sociólogo Max Weber é inegável na história das Ciências Sociais, mas será que a partir de sua obra, intitulada A ética protestante e o espírito do capitalismo, é possível explicar o consumo de luxo atual? Neste artigo, serão apresentadas algumas críticas feitas ao livro por estudiosos que acreditam que o seu autor tenha desprezado fatos importantes que influenciaram a sociedade no século XVII, tais como a moda, a valorização do amor romântico e a mentalidade europ...

  4. Burocratización y racionalización en Max Weber a la luz de las interpretaciones actuales de su obra

    Directory of Open Access Journals (Sweden)

    Alexis Emanuel Gros

    2015-03-01

    Full Text Available Este trabajo se propone presentar de forma sucinta y sistemática la teoría de la burocracia de Max Weber y problematizar el rol que esta juega en sus reflexiones sobre el proceso de racionalización occidental (okzidentale Rationalisierung. Para ello, se analizan textos centrales del autor como Wirtschaft und Gesellschaft, Politik als Beruf y Die protestantische Ethik und der "Geist“ des Kapitalismus, entre otros. La exposición se guía en las más recientes interpretaciones germanoparlantes de la obra weberiana, a saber: las de Dirk Kaesler, Hans-Peter Müller, Uwe Barrelmeyer y Volker Kruse; y Harmut Rosa, David Strecker y Andreas Kottmann.

  5. Las concepciones del Estado de Durkheim y Weber ante la teoría política marxista : vínculos, cruces y desacuerdos.

    OpenAIRE

    Alejandra Inda, Graciela

    2009-01-01

    Con la firme intención de contribuir a incrementar y profundizar los escasos análisis comparados de las sociologías del Estado de Durkheim y Weber, máximos exponentes de la denominada teoría sociológica clásica, en este trabajo me interesa el tipo de relación teórico política que mantienen con la teoría marxista del Estado. Sus concepciones del Estado y las posiciones políticas que sostienen ante el materialismo histórico, ¿qué coincidencias muestran?, ¿qué discrepancias?, ¿cuáles predominan?...

  6. Volmer–Weber InAs quantum dot formation on InP (113)B substrates under the surfactant effect of Sb

    Energy Technology Data Exchange (ETDEWEB)

    Zhao, Yu, E-mail: yu.zhao@insa-rennes.fr; Bertru, Nicolas; Folliot, Hervé; Rohel, Tony [Université Européenne de Bretagne, INSA, FOTON, UMR-CNRS 6082, 20 Avenue des Buttes de Coësmes, F-35708 Rennes Cedex 7 (France); Mauger, Samuel J. C.; Koenraad, Paul M. [COBRA Inter-University Research Institute, Eindhoven University of Technology, P.O. Box 513, NL-5600MB Eindhoven (Netherlands)

    2014-07-21

    We report on Sb surfactant growth of InAs nanostructures on GaAs{sub 0.51}Sb{sub 0.49} layers deposited on InP (001) and on (113)B oriented substrates. On the (001) orientation, the presence of Sb significantly favors the two-dimensional growth regime. Even after the deposition of 5 mono-layers of InAs, the epitaxial film remains flat and InAs/GaAs{sub 0.51}Sb{sub 0.49} type-II quantum wells are achieved. On (113)B substrates, same growth runs resulted in formation of high density InAs islands. Microscopic studies show that wetting layer is missing on (113)B substrates, and thus, a Volmer-Weber growth mode is concluded. These different behaviors are attributed to the surface energy changes induced by Sb atoms on surface.

  7. Imaging findings of arteriovenous malformations involving lung and liver in hereditary hemorrhagic telangiectasia(Osler-weber-rendu disease): two cases report

    Energy Technology Data Exchange (ETDEWEB)

    Yi, Jeong Geun; Lee, Joo Hyuk; Seong, Su Ok [Cheongju St. Mary' s Hospital, Cheongju (Korea, Republic of)

    1999-09-01

    Hereditary hemorrhagic telangiectasia (HHT) or Osler-Weber-Rendu disease is an autosomal dominant disorder characterized by repeated episodes of bleeding. Multiple telangiectases consisting of thin-walled, dilated vascular channels with arteriovenous communication may involve, for example, mucocutaneous tissue, the gastrointestinal tract, and the liver, lung, and brain. We report the imaging findings of two cases of HHT involving arteriovenous malformation of both the lungs and liver, a rare condition. Chest radiography revealed a round mass, while helical CT showed a feeding artery and draining vein with arteriovenous malformation in the lung. Color Doppler sonography revealed an enlarged and tortuous hepatic artery with high systolic velocity. CT demonstrated an enlarged hepatic artery, arteriovenous shunt, and early draining hepatic vein in the liver. Celiac angiography showed arteriovenous malformation.

  8. Hemodynamics in the Sturge-Weber syndrome utilizing stable Xe-CT; With special reference to the perfusion reserve and the epileptic focus activated by megimide

    Energy Technology Data Exchange (ETDEWEB)

    Okudaira, Yojiro; Bandoh, Kuniaki; Ito, Masanori; Sato, Kiyoshi; Tsuji, Masahiro (Juntendo Univ., Tokyo (Japan). School of Medicine)

    1993-02-01

    In 4 Sturge-Weber-syndrome child patients with calcified lesions mainly in the occipital lobe, regional cerebral blood flow (rCBF) was determined with stable Xe-CT in the resting state and after iv injection of acetazolamide (AA) and megimide (M), with the purpose of examining factors affecting deterioration of neurologic manifestations and the influence of lobectomy. In the resting state, rCBF of the temporal and occipital areas was significantly lower on the affected than unaffected sides. The side-to-side asymmetry of rCBF in the affected and unaffected sides decreased from the frontal to temporal and occipital areas. It was indistinct after AA injection because cerebral vasoreactivity became higher on the affected side. A low rCBF in association with a high cerebral vasoreactivity on the lesion side suggested that the low rCBF matched the low cerebral metabolism of the brain area affected by leptomeningeal angiomatosis. However, cerebral vasoreactivity to AA depended on clinical presentations. Two patients presented with progressive mental retardation. The other two patients were in clinically stable condition. Cerebral vasoreactivity to AA in the former two cases was poorer on both the affected and unaffected sides than that in the latter two cases. M administration was associated with a significantly decreased rCBF in the area of leptomeningeal angiomatosis and cerebral calcification and with a significantly increased rCBF of the 'pericalcified' area. In one patient undergoing extended occipital lobectomy on the affected side, no decrease in rCBF was noted in the resting state in either affected or unaffected side, and cerebral vasoreactivity to AM on the unaffected side was apparently increased. Both circulatory disturbance and seizure appear to play a role in clinical presentations, as well as their deterioration in Sturge-Weber-Syndrome patients. (N.K.).

  9. Lake Eutrophication Assessment Based on Weber-Fechner Law%基于韦伯-费希纳定律的湖泊富营养化评价

    Institute of Scientific and Technical Information of China (English)

    李小燕; 王菲凤; 张江山

    2011-01-01

    基于韦伯-费希纳定律基本原理,以表征水体富营养化的Chla、TP、TN、SD、CODMn的浓度作为评价指标,采用变异系数法确定各评价指标的权重,通过确定营养状态等级与综合影响指数间的函数关系,定量评价水体的富营养化程度,将该理论应用于2006年北京市21个湖泊富营养化状况的评价,并与TSIc、EI两种方法的评价结果进行比较.结果表明,韦伯-费希纳定律物理意义明确、计算过程简单、可复制性强、评价结论准确合理.%According to Weber-Fechner law, concentrations of chlorophyll-a(Chla), total phosphorus(TP), total nitrogen(TN), transparency (SD) and chemical oxygen demand(CODMn) are taken as the evaluation indicators of lake eutrophication. And the weights of each evaluation indicator are calculated with variation coefficient method. Based on the functional relationship between the trophic level and the eutrophication integrated index, the lake eutrophication is assessed quantificationally. Finally, the model is applied to assessing 21 lakes eutrophication in Beijing city and evaluation results are compared with those of TSIc and El methods. The results show that Weber-Fechner law has explicit physical significance, simple calculating process, easy for duplicating and reasonable for evaluation conclusion.

  10. Bone Mineral Density, Mechanical, Microstructural Properties and Mineral Content of the Femur in Growing Rats Fed with Cactus Opuntia ficus indica (L.) Mill. (Cactaceae) Cladodes as Calcium Source in Diet.

    Science.gov (United States)

    Hernández-Becerra, Ezequiel; Gutiérrez-Cortez, Elsa; Del Real, Alicia; Rojas-Molina, Alejandra; Rodríguez-García, Mario; Rubio, Efraín; Quintero-García, Michelle; Rojas-Molina, Isela

    2017-02-04

    Mechanical, microstructural properties, mineral content and bone mineral density (BMD) of the femur were evaluated in growing rats fed with Opuntia ficus indica (L.) Mill. (Cactaceae) cladodes at different maturity stages as calcium source. Male weanling rats were fed with cladodes at early maturity stage (25 and 60 days of age, belonging to groups N-60 and N-200, respectively) and cladodes at late maturity stage (100 and 135 days of age, belonging to groups N-400 and N-600, respectively) for 6 weeks. Additionally, a control group fed with calcium carbonate as calcium source was included for comparative purposes. All diets were fitted to the same calcium content (5 g/kg diet). The failure load of femurs was significantly lower (p ≤ 0.05) in groups N-60 and N-200 in comparison to N-400, N-600 and control groups. The cortical width (Ct.Wi) and trabecular thickness (Tb.Th) of the femurs in control and N-600 groups were significantly higher (p ≤ 0.05) than Ct.Wi and Tb.Th of femurs in groups N-60 and N-200. Trabecular separation of the femurs in N-60 and N-200 groups showed the highest values compared with all experimental groups. The highest calcium content in the femurs were observed in control, N-600 and N-400 groups; whereas the lowest phosphorus content in the bones were detected in N-200, N-600 and N-400 groups. Finally, the BMD in all experimental groups increased with age; nevertheless, the highest values were observed in N-600 and control groups during pubertal and adolescence stages. The results derived from this research demonstrate, for the first time, that the calcium found in Opuntia ficus indica cladodes is actually bioavailable and capable of improving mineral density and mechanical and microstructural properties of the bones. These findings suggest that the consumption of cladodes at late maturity stage within the diet might have a beneficial impact on bone health.

  11. 韦伯与福柯现代性理论的比较%A Comparison between Max Weber's and Michel Foucault's Modernity Theories

    Institute of Scientific and Technical Information of China (English)

    刘梦阳

    2014-01-01

    韦伯与福柯都是研究现代性的集大成者,韦伯将现代性的负面效应比作“理性的铁笼”,而福柯将现代性对人们的监控看做是“全景监狱”。他们的思想的差异性建立在其亲和性和继承性的基础上。他们各自的理论有其显著的特点。从韦伯与福柯的著作中发掘二者在现代性思想方面的差别,其主要集中在方法论、分析视角、对待现代性的态度和关注焦点这四个方面。然而殊途同归,二者都关注现代性社会的权力与身体议题,同时又都对现代性进行了有逻辑、有价值、有深度的批判。然而二者虽都剑指现代性的症结却都没有提出超越的方案和设想。%Max Weber and Michel Foucault are two grand masters in the academic field of modernity theory.Weber explain the negative aspect of modernity by analogy with“iron cages of rationality”,while Foucault regard the supervision of modern society as a kind of “Panopticon”.Their theories have their respective characteristics,and the main divergences exist in the methodology,the perspective,the attitude to the modernity and the main focus of attention.But at last,all roads lead to Rome.They both criticize the modern society logically and profoundly.Although they both point out the crux of modernity ,but they haven’t brought about new plans to exceed them.

  12. Comment on the Max Weber Thought of Legitimacy%马克斯·韦伯合法性思想评析

    Institute of Scientific and Technical Information of China (English)

    伍俊斌

    2011-01-01

    In the history of Western political thought, Max Weber systematic studied the question of political legitimacy for the first time and made it a classical theory. Weber~ thought of legitimacy primary concern was how the rulers to rule the people, rather than why the rulers to rule the people. Authority and obedience is a political reality and is not a value judg- ments. The basis of legitimacy can be divided into three types : following the traditional, the conviction of Charisma, and fol- lowing the reason. Only the legal - rule exemplifies the trend of historical development. It is the inevitable result of political development. Weberg theory of legitimacy is very groundbreaking, but it takes away the core of value of the normative legal theory, showing a significant technical and tool orientation.%在西方政治思想史上,马克斯·韦伯第一次对政治合法性问题进行了系统研究并使之成为经典理论。韦伯合法性关注的首要问题是统治者如何统治,而不是统治者为何统治。权威与服从,是一种政治现实,而非价值判断。合法性基础可分为三种:对传统的遵从、对超凡魅力的信服和对理性的追随。唯有法理型统治才体现了历史发展的潮流,是政治发展的必然结果。韦伯的合法性理论极富开创性,但抽去了规范主义合法性理论的价值反思内核,表现出明显的技术化、工具化倾向。

  13. DIAGNÓSTICO TARDÍO DE INTOXICACIÓN POR FENITOÍNA EN UN PACIENTE CON SÍNDROME DE STURGE-WEBER

    Directory of Open Access Journals (Sweden)

    Yesenia M Huerta-Collado

    2013-01-01

    Full Text Available Introducción: La Fenitoína es un fármaco antiepiléptico utilizado comúnmente en crisis focales y tónico-clónicas generalizadas. Este fármaco tiene una cinética no lineal compleja, alta unión a proteínas y una ventana terapéutica estrecha, por lo cual la intoxicación se convierte en un riesgo latente. El cuadro clínico de intoxicación por fenitoína está conformado por alteración de la función cerebelosa y vestibular, somnolencia, debilidad generalizada, visión bo- rrosa, movimientos coreo-atetósicos y coma. Caso clínico: Paciente masculino de 20 años de edad con diagnóstico de síndrome de Sturge-Weber asociado a crisis epilépticas parciales complejas tratado con 300 mg de fenitoína diaria durante tres meses, tiempo en el que presenta síntomas progresivos caracterizados por somnolencia, visión borrosa, imposibilidad para la marcha, disartria y movimientos involuntarios coreo-atetósicos que fueron interpretados como parte de su enfermedad hasta antes de su ingreso al Instituto Nacional de Ciencias Neurológicas, Lima, Perú. El paciente ingresa con un título de 75,6 ug/ml de fenitoína en plasma, por lo que se decide el retiro del fármaco y su reemplazo por fenobarbital. El cuadro clínico fue remitiendo conforme disminuían los títulos de fenitoína en el paciente. Interpretación: La evaluación de factores asociados al metabolismo y monitorización periódica de los niveles séricos de fenitoína en los pacientes que reciben este fármaco es crucial, asimismo es importante el conocimiento de síntomas que indiquen toxicidad para que no sean confundidos con manifestaciones presentes en enfermedades subyacentes como el síndrome de Sturge-Weber en este caso.

  14. Propuesta de una cosechadora-desmenuzadora de Agave tequilana Weber para la producción de bioetanol y revisión de los procedimientos existentes

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    Salvador García Barrón

    2012-03-01

    Full Text Available Agave crop (Agave tequilana Weber is an option to produce bioethanol as biofuel. By-hand-harvesting of agave is 75 % of crop production costs, resulting in a higher production cost of bioethanol than for other crops. This paper presents a proposal of agave shredder-harvester, for which are considered: existing proposals, the methodology of current crop harvest, agricultural machines and mechanisms of interest, requirements of the raw material for bioethanol production. Agave harvester proposed considers shredding of leaves and pineapple retaking ideas of gridding mechanisms such as milling of agave, shredding crop residues machines. The mechanization of the harvest of agave for production of bioethanol presents feasibility that will require a research to design, the crushing mechanism, its blades, geometry and dimensions, and the power required to measure different elements of the combine harvester in the crushing operation, as well as other variables.El Agave tequilana Weber es una opción para la producción de bioetanol combustible. La cosecha manual del agave representa el 75 % de los costos de producción del cultivo, lo que ocasiona un mayor costo de producción del bioetanol que para otros cultivos. En este trabajo se presenta una propuesta de cosechadora-desmenuzadora de agave, para lo cual se consideran: propuestas existentes, la metodología de cosecha actual, máquinas agrícolas con mecanismos de interés y los requerimientos de la materia prima para producir bioetanol. La cosechadora propuesta considera el desmenuzado de hojas y piña en campo, retomando ideas de mecanismos empleados en molinos de piña de agave y desmenuzadoras agrícolas. La cosecha mecanizada de agave para producción de bioetanol presenta viabilidad técnica que requerirá una investigación para diseñar el mecanismo desmenuzador, su disposición geométrica y dimensiones, así como la potencia requerida en el desmenuzado, con el fin de dimensionar distintos

  15. Bone Mineral Density, Mechanical, Microstructural Properties and Mineral Content of the Femur in Growing Rats Fed with Cactus Opuntia ficus indica (L. Mill. (Cactaceae Cladodes as Calcium Source in Diet

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    Ezequiel Hernández-Becerra

    2017-02-01

    Full Text Available Mechanical, microstructural properties, mineral content and bone mineral density (BMD of the femur were evaluated in growing rats fed with Opuntia ficus indica (L. Mill. (Cactaceae cladodes at different maturity stages as calcium source. Male weanling rats were fed with cladodes at early maturity stage (25 and 60 days of age, belonging to groups N-60 and N-200, respectively and cladodes at late maturity stage (100 and 135 days of age, belonging to groups N-400 and N-600, respectively for 6 weeks. Additionally, a control group fed with calcium carbonate as calcium source was included for comparative purposes. All diets were fitted to the same calcium content (5 g/kg diet. The failure load of femurs was significantly lower (p ≤ 0.05 in groups N-60 and N-200 in comparison to N-400, N-600 and control groups. The cortical width (Ct.Wi and trabecular thickness (Tb.Th of the femurs in control and N-600 groups were significantly higher (p ≤ 0.05 than Ct.Wi and Tb.Th of femurs in groups N-60 and N-200. Trabecular separation of the femurs in N-60 and N-200 groups showed the highest values compared with all experimental groups. The highest calcium content in the femurs were observed in control, N-600 and N-400 groups; whereas the lowest phosphorus content in the bones were detected in N-200, N-600 and N-400 groups. Finally, the BMD in all experimental groups increased with age; nevertheless, the highest values were observed in N-600 and control groups during pubertal and adolescence stages. The results derived from this research demonstrate, for the first time, that the calcium found in Opuntia ficus indica cladodes is actually bioavailable and capable of improving mineral density and mechanical and microstructural properties of the bones. These findings suggest that the consumption of cladodes at late maturity stage within the diet might have a beneficial impact on bone health.

  16. Bone Mineral Density, Mechanical, Microstructural Properties and Mineral Content of the Femur in Growing Rats Fed with Cactus Opuntia ficus indica (L.) Mill. (Cactaceae) Cladodes as Calcium Source in Diet

    Science.gov (United States)

    Hernández-Becerra, Ezequiel; Gutiérrez-Cortez, Elsa; Del Real, Alicia; Rojas-Molina, Alejandra; Rodríguez-García, Mario; Rubio, Efraín; Quintero-García, Michelle; Rojas-Molina, Isela

    2017-01-01

    Mechanical, microstructural properties, mineral content and bone mineral density (BMD) of the femur were evaluated in growing rats fed with Opuntia ficus indica (L.) Mill. (Cactaceae) cladodes at different maturity stages as calcium source. Male weanling rats were fed with cladodes at early maturity stage (25 and 60 days of age, belonging to groups N-60 and N-200, respectively) and cladodes at late maturity stage (100 and 135 days of age, belonging to groups N-400 and N-600, respectively) for 6 weeks. Additionally, a control group fed with calcium carbonate as calcium source was included for comparative purposes. All diets were fitted to the same calcium content (5 g/kg diet). The failure load of femurs was significantly lower (p ≤ 0.05) in groups N-60 and N-200 in comparison to N-400, N-600 and control groups. The cortical width (Ct.Wi) and trabecular thickness (Tb.Th) of the femurs in control and N-600 groups were significantly higher (p ≤ 0.05) than Ct.Wi and Tb.Th of femurs in groups N-60 and N-200. Trabecular separation of the femurs in N-60 and N-200 groups showed the highest values compared with all experimental groups. The highest calcium content in the femurs were observed in control, N-600 and N-400 groups; whereas the lowest phosphorus content in the bones were detected in N-200, N-600 and N-400 groups. Finally, the BMD in all experimental groups increased with age; nevertheless, the highest values were observed in N-600 and control groups during pubertal and adolescence stages. The results derived from this research demonstrate, for the first time, that the calcium found in Opuntia ficus indica cladodes is actually bioavailable and capable of improving mineral density and mechanical and microstructural properties of the bones. These findings suggest that the consumption of cladodes at late maturity stage within the diet might have a beneficial impact on bone health. PMID:28165410

  17. Commonalities and Differences Between Max Weber and Michael Foucault on the Theme of “Rationalization of the Body”(“Bedenin Ussallaşması” Teması Üzerinde Max Weber ve Michael Foucault Arasındaki Yakınsamalar ve Farklılıklar

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    Buğra ÖZER

    2010-01-01

    Full Text Available The main objective of this paper is to elucidate the very nature of ‘the rationalization of the body’ in regard to the convergence and divergences as envisioned in the works of Max Weber and Michael Foucault. While both of the thinkers may be deemed to be important critiques of the modernity process, their insights reveal certain commonalities as the came to deal with the rationalization of the body and individuation of the body along with differences that can be traced back to their roots in their critiques about the modernity project. In such respect, the study emphasizes that rationalization of the body has been a complex process and it italicizes that different dynamics came to redefine the body and individuate the individual along with the continuation of the process.

  18. ENTRE AS FLORES DA PAIXÃO E OS ESPINHOS DA RAZÃO: MAX WEBER NOS JARDINS DAS CIÊNCIAS SOCIAIS

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    Cristina Maria Silva

    2004-01-01

    Full Text Available Neste ensaio abordamos o pensamento de Max Weber para refletirmos sobre como temos vivido e construído nossos conhecimentos sobre a realidade social. Muitas vezes esquecemos que a vida ultrapassa nossos autores, teses e paradigmas e que a linguagem que utilizamos é apenas o nosso esforço limitado para revelar tudo o que vemos diante da elaboração das ações humanas. Somente nossa imaginação é que pode reunir o que vemos, lemos e ouvimos para elaborarmos diferentes rumos para esta estrada do conhecimento. O pretenso caminho límpido da ciência é na verdade movido pela razão, mas impulsionado pela chamas da paixão, pois é através desta que o cientista delimita uma trilha a seguir, fazendo prevalecer alguns valores e rejeitando outros, sendo assim buscamos perceber como a vocação científica não se restringe somente a pôr em práticas regras estabelecidas, mas que também que precisamos estar abertos à intuição e à paixão pelo o que fazemos.

  19. Two Phase Non-Rigid Multi-Modal Image Registration Using Weber Local Descriptor-Based Similarity Metrics and Normalized Mutual Information

    Science.gov (United States)

    Yang, Feng; Ding, Mingyue; Zhang, Xuming; Wu, Yi; Hu, Jiani

    2013-01-01

    Non-rigid multi-modal image registration plays an important role in medical image processing and analysis. Existing image registration methods based on similarity metrics such as mutual information (MI) and sum of squared differences (SSD) cannot achieve either high registration accuracy or high registration efficiency. To address this problem, we propose a novel two phase non-rigid multi-modal image registration method by combining Weber local descriptor (WLD) based similarity metrics with the normalized mutual information (NMI) using the diffeomorphic free-form deformation (FFD) model. The first phase aims at recovering the large deformation component using the WLD based non-local SSD (wldNSSD) or weighted structural similarity (wldWSSIM). Based on the output of the former phase, the second phase is focused on getting accurate transformation parameters related to the small deformation using the NMI. Extensive experiments on T1, T2 and PD weighted MR images demonstrate that the proposed wldNSSD-NMI or wldWSSIM-NMI method outperforms the registration methods based on the NMI, the conditional mutual information (CMI), the SSD on entropy images (ESSD) and the ESSD-NMI in terms of registration accuracy and computation efficiency. PMID:23765270

  20. Ground-water hydrology of Ogden Valley and surrounding area, eastern Weber County, UT, and simulation of ground-water flow in the Valley-fill aquifer system

    Science.gov (United States)

    Avery, Charles

    1994-01-01

    The ground-water resources in Ogden Valley, eastern Weber County, Utah, were the subject of a study to provide a better understanding of the hydrologic system in the valley and to estimate the hydrologic effects of future ground-water development. The study area included the drainage basin of the Ogden River upstream from Pineview Reservoir dam and the drainage basin of Wheeler Creek. Ogden Valley and the surrounding area are underlain by rocks that range in age from Precambrian to Quaternary.The consolidated rocks that transmit and yield the most water in the area surrounding Ogden Valley are the Paleozoic carbonate rocks and the Wasatch Formation of Tertiary age. Much of the recharge to the consolidated rocks is from snowmelt that infiltrates the Wasatch Formation, which underlies a large part of the study area. Discharge from the consolidated rocks is by streams, evapotranspiration, springs, subsurface outflow, and pumping from wells. Water in the consolidated rocks is a calcium bicarbonate type and has a dissolved-solids concentration of less than 250 milligrams per liter.

  1. Winter starch reserves of white oak as a predictor of attack by the twolined chestnut borer, Agrilus bilineatus (Weber) (Coleoptera: Buprestidae).

    Science.gov (United States)

    Dunn, J P; Kimmerer, T W; Potter, D A

    1987-12-01

    The twolined chestnut borer, Agrilus bilineatus (Weber) (Coleoptera: Buprestidae), attacks oaks (Quercus spp.) and is associated with extensive mortality of trees in the eastern deciduous forests of North America. We tested the hypothesis that winter starch reserves of oak roots are an indicator of tree vigor and that only trees low in stored starch would be attacked by A. bilineatus. We measured the levels of stored starch in the roots of 200 non-infested healthy white oaks during the dormant season and determined their correlation with A. bilineatus attacks the following spring. There was a significant increase in A. bilineatus captures on sticky traps with a decrease in winter starch reserves. Trees low in stored starch that were also stressed by phloem-girdling attracted 3.7 times as many beetles as did non-girdled trees that were low in starch. However, non-girdled trees that had low winter starch reserves were also attacked. Only oaks that had had extremely low winter root starch reserves (5 mg/g dry wt died. These results indicate that winter starch reserves are a good predictor of A. bilineatus attack.

  2. Durkheim and Weber:Sociological Methodology Comparison%迪尔凯姆与韦伯:社会学方法论比较

    Institute of Scientific and Technical Information of China (English)

    江光友

    2014-01-01

    迪尔凯姆和韦伯不仅在社会学实质理论方面贡献巨大,而且二人各自的社会学方法论研究更是社会学作为一门学科自觉进行方法论研究的滥觞。社会学方法论二元对立的局面亦是始自这俩人。本文从方法论的哲学基础、整体主义和个体主义、研究的逻辑起点三方面对二人的社会学方法论进行比较。%Durkheim and Weber not only substantive contribution to the sociological theory is huge, and two of their soci-ological research methodology is sociology as a discipline consciously marked the beginning of the study methodology. So-ciological Methodology dualism situation also began the two men. In this paper, two people from the face of Sociological Methodology philosophical foundation, holism and individualism, the logical starting point for tripartite research methodo-logy to compare.

  3. Doença de Niemann-Pick forma do adulto associada a sindrome de Osler-Rendu-Weber: registro de um caso

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    J. Lamartine de Assis

    1979-03-01

    Full Text Available É relatada a doença de Niemann-Pick forma de adulto em uma mulher de 28 anos de idade. A doença começou aos 22 anos de idade. Foram discutidas as características atualmente estabelecidas para essa forma clínica de lipidose. A visão foi comprometida desde o início mas exames clínico e neurológico repetidos foram sempre normais. A fundoscopia ocular mostrou mancha vermelho-cereja na mácula. Foram encontradas as células espumosas na medula óssea. No presente caso ocorreu associação incomum da esfingolipidose com a doença de Osler-Rendu-Weber. A evolução, até o momento, tem sido extraordinariamente benigna, com pobre participação cerebral representada por moderada atrofia cortical localizada e vista ao pneumencefalograma.

  4. Secularização em Max Weber: Da contemporânea serventia de voltarmos a acessar aquele velho sentido

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    Pierucci Antônio Flávio

    1998-01-01

    Full Text Available O tratamento dado à tese da secularização pela sociologia empírica da religião praticada hoje no Brasil simplesmente não satisfaz (pelo menos aos intelectos teoricamente mais exigentes. Neste ensaio, diante da celebração empirista e inconseqüente de fenômenos religiosos que supostamente estariam fazendo da nossa contemporaneidade uma época de "dessecularização", ou" pós-secularização", o autor defende a necessidade de se reabrir a discussão conceitual do problema. Pode ser de grande utilidade para a sociologia da religião, argumenta, enfrentar-se de novo com o velho significado jurídico-político com o qual, no Ocidente, se pôs a questão deste processo histórico-social de dessacralização instalado, antes de mais nada, na esfera vital da normatividade jurídico-política. Este é o significado que se explicita na "sociologia do direito" de Max Weber, autor que é considerado, também por seus críticos, o maior representante da tese da secularização na teoria sociológica.

  5. Pseudobacciger cheneyae n. sp. (Digenea: Gymnophalloidea) from Weber's chromis (Chromis weberi Fowler & Bean) (Perciformes: Pomacentridae) at Lizard Island, Great Barrier Reef, Australia.

    Science.gov (United States)

    Sun, Derek; Bray, Rodney A; Yong, Russell Q-Y; Cutmore, Scott C; Cribb, Thomas H

    2014-06-01

    A new species of digenean, Pseudobacciger cheneyae n. sp., is described from the intestines of Weber's chromis (Chromis weberi Fowler & Bean) from off Lizard Island, Great Barrier Reef, Australia. This species differs from the three described species of Pseudobacciger Nahhas & Cable, 1964 [P. cablei Madhavi, 1975, P. harengulae Yamaguti, 1938 and P. manteri Nahhas & Cable, 1964] in combinations of the size of the suckers and the length of the caeca. The host of the present species is a perciform (Family Pomacentridae) which contrasts with previous records of the genus which are almost exclusively from clupeiform fishes. The genus Pseudobacciger is presently recognised within the family Faustulidae (Poche, 1926) but phylogenetic analyses of 28S and ITS2 rDNA show that the new species bears no relationship to species of four other faustulid genera (Antorchis Linton, 1911, Bacciger Nicoll, 1924, Paradiscogaster Yamaguti, 1934 and Trigonocryptus Martin, 1958) but that instead it is nested within the Gymnophalloidea (Odhner, 1905) as sister to the Tandanicolidae (Johnston, 1927). This result suggests that the Faustulidae is polyphyletic.

  6. Experimental studies on the effect of Reynolds and Weber numbers on the impact forces of low-speed droplets colliding with a solid surface

    Science.gov (United States)

    Zhang, Bin; Li, Jingyin; Guo, Penghua; Lv, Qian

    2017-09-01

    The impact force of low-speed droplets colliding with a solid surface was recorded with an experimental setup involving a highly sensitive piezoelectric force transducer and a high-speed camera recording the droplet shape. Water, ethanol, pure glycerin and aqueous glycerin solutions were used. Experimental results showed that dimensionless force is independent of the Weber number in the experimental range of 68-858 but varies with the Reynolds number. The impact is categorized into three types of processes according to the data on dimensionless peak force against the Reynolds number. The first type is a viscosity-dominated one, in which the Reynolds number ranges between 2.9 and 20. In the second type, transition process, the Reynolds number is in the range of 20-230. In the inertia-dominated type, the Reynolds number is larger than 230. In the viscosity-dominated impact, dimensionless peak force decreases rapidly with increasing Reynolds number, and the effect of viscosity could not be ignored. In the inertia-dominated impact, dimensionless peak force remains constant with varying the Reynolds number, that is, impact force is directly proportional to the product of liquid density, velocity squared and diameter squared but is unaffected by the changes in viscosity and surface tension. Furthermore, the deformation of droplet shape due to oscillation affects the impact force; a small horizontal-to-vertical ratio results in small impact force and vice versa.

  7. De Max Weber a Michel Maffesoli: inmigración, reencantamiento del mundo y politeísmo de valores en Estados Unidos

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    Rafael Arriaga Martínez

    2014-01-01

    Full Text Available De acuerdo con la teoría de la posmodernidad de Michel Maffesoli, el reencan - tamiento del mundo y el politeísmo de valores afectan a las sociedades modernas de mane - ra independiente del contacto con los inmigrantes. No obstante, los inmigrantes coadyuvan a la revitalización del cuerpo social. Es con esta hipótesis en mente que evocamos una serie de ejemplos en donde se destaca la importancia de lo emocional en la estructuración de los fenómenos sociales. Dada la importancia que reviste el método comprensivo de Max Weber para la teoría de la posmodernidad, consideramos algunos de sus instrumentos, los explicamos y los aplicamos, tratando de apegarnos al entendimiento que tiene de ellos Michel Maffesoli. La importancia de lo emocional en la estructuración de los fenómenos descritos con¿rma la utilidad heurística de la teoría de la posmodernidad.

  8. Overexpression of smORF YNR034W-A/EGO4 in Saccharomyces cerevisiae increases the fermentative efficiency of Agave tequilana Weber must.

    Science.gov (United States)

    Vargas-Maya, Naurú Idalia; González-Hernández, Gloria Angélica; Padilla-Guerrero, Israel Enrique; Torres-Guzmán, Juan Carlos

    2017-01-01

    Fermentative processes are widely used to produce food, beverages and biofuels. Saccharomyces cerevisiae is an efficient ethanol-producing microorganism. However, a concentration of high ethanol and other metabolites can affect yeast viability and decrease the ethanol yield. Many studies have focused on improving the fermentative efficiency, mostly through the genetic engineering of genes that have a direct impact on specific metabolic pathways. In the present study, we characterized a small open reading frame encoding a protein with an unknown function and biological role termed YNR034W-A. We analyzed the expression profile of the YNR034W-A gene during growth and glucose treatment, finding that it is expressed during the diauxic shift and stationary phase and is negatively regulated by glucose. We overexpressed the YNR034W-A gene in the BY4741 laboratory strain and a wild-type yeast strain (AR5) isolated during the Tequila fermentation process. Transformant derivatives of the AR5 strain showed an improved fermentative efficiency during fermentation of Agave tequilana Weber juice. We suggest that the improved fermentative efficiency is the result of a higher stress tolerance response in the YNR034W-A overexpressing transformant.

  9. Desenvolvimento de um novo implante para osteotomia alta da tíbia: comparação "in vitro" com o método de Brunner & Weber de fixação Development of a new implant for high tibial osteotomy: comparison "in vitro" with the Brunner & Weber fixation method

    Directory of Open Access Journals (Sweden)

    Constantino Jorge Calapodopulos

    2000-12-01

    Full Text Available Os autores desenvolveram um novo implante para osteotomia proximal de tíbia como alternativa para tratamento da osteoartrose do joelho com deformidade em varo . O objetivo do trabalho foi desenvolver uma placa para fixação simples, de fácil manejo, e menor custo, propiciando baixa morbidade em relação aos métodos existentes, e compará-la com o método idealizado por BRUNNER e WEBER (1982² que utilizaram a placa semitubular. Os testes mecânicos foram realizados em máquina universal de ensaios do Laboratório de Bioengenharia da Faculdade de Medicina de Ribeirão Preto, Campus Universitário, Universidade de São Paulo. Nos parâmetros analisados como limite de proporcionalidade, módulo de elasticidade observaram-se valores diferentes entre as duas placas mostrando que o novo implante apresentou resistência e estabilidade superior à placa semitubular quando submetidos a testes de flexão.The author compares this new plate with other type of fixation described by Weber that employed a semitubular plate based on tension band principle. The mecanical tests were perfomed in a universal test machine of the "Laboratório de Bioengenharia da Faculdade de Medicina de Ribeirão Preto, Campus Universitário, Universidade de São Paulo". A three-point-flexion test established was employed dislocation.The weak point in the semitubular plate model ocurred mainly where it was bent at is external hole, displaying hole enlargement at loads of less than 30 N.m. The author choosed the 3-points flexion test, which provides a qualitative indication of the material resistivity. The conclusion was that the new implant showed stability and resistance superior to the semitubular plate when submitted to flexion tests.

  10. Fermentación de los fructanos del Agave tequilana Weber Azul por Zymomonas mobilis y Saccharomyces cerevisiae en la producción de bioetanol Fermentation of Agave tequilana Weber Azul fructans by Zymomonas mobilis and Sacchamomyces cerevisiae in the production of bioethanol

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    José L Montañez

    2011-01-01

    Full Text Available Fructanos contenidos en las bases de las hojas del agave fueron extraídos y utilizados como fuente de carbono a varias concentraciones para la producción de bioetanol. Se usaron dos microorganismos etanolgénicos: la levadura Saccharomyces cerevisiae CDBB-L-331 y la bacteria Zymomona mobilis CDBB-B-603. Las hojas del agave tequilero ( Agave tequilana Weber Azul constituyen los residuos agrícolas del cultivo y a pesar de su alto contenido de azúcares reductores totales (ART y a los grandes volúmenes que anualmente se generan, actualmente no se utilizan. Los resultados muestran que la bacteria Zymomona mobilis es capaz de crecer a mayores concentraciones de ART, produce mayor cantidad de etanol y tolera mayores concentraciones del mismo. El rendimiento en la producción de etanol, la eficiencia de conversión y la productividad volumétrica también fueron mayores cuando la fermentación se llevó a cabo con Zymomona mobilis a una concentración de 20% de ART.Fructans contained in the base of agave leaves were extracted, hydrolyzed and used as carbon source at several concentrations for the production of bioethanol through two different ethanolgenic microorganisms: the yeast Saccharomyces cerevisiae CDBB-L-331 and the bacterium Zymomonas mobilis CDBB-B-603. The leaves of agave tequilana ( Agave tequilana Weber Azul constitute the agricultural crop residues and despite its high content of total reducing sugars (TRS and the large volumes generated each year, they are not currently used. The results show that Zymomonas mobilis is able to grow to higher levels of TRS produces more ethanol and tolerate higher concentrations of it. The yield in ethanol production, conversion efficiency and volumetric productivity were also higher when fermentation was carried out with Zymomonas mobilis at a concentration of 20% of TRS.

  11. Reflexión teórica sobre la validez de los preceptos de acción social de Max Weber para el análisis del campesinado actual Theoretical reflection on the validity of the rules of social action of Max Weber for the analysis of the present peasantry

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    Diosey Ramón Lugo Morin

    2005-12-01

    Full Text Available En un fin de siglo marcado por un nuevo orden mundial, los campesinos no pueden quedarse al margen; la nueva socialidad rural ya no sólo tiene sus nudos en barrios y comunidades, también en proyectos y aparatos económicos gestionados por las organizaciones. Las empresas medianas o grandes de carácter asociativo son parte del nuevo perfil campesino y los conocimientos y las habilidades necesarias para operarlos se están incorporando a su cultura. El campesino no es una persona o familia, el campesino es un fenómeno social, él se ubica en el contexto histórico, ético, folklórico y religioso y difícilmente puede ser definible, ni siquiera indefinible, debido a la multiplicidad de roles que cumple en la sociedad actual. El campesino actual es una mezcla de pasado, presente y futuro, esta afirmación en definitiva es la clave de su reproducción. En este sentido, tratar de entender y comprender las organizaciones campesinas a través de teorías sociológicas propuestas en el pasado, en especial el concepto de acción social de Max Weber sería poco prudente, ya que las estructuras de valores de estos individuos ha cambiado sustancialmente o de lo contrario ha desaparecido. Aunque el concepto de los valores impera, el mismo está inmerso dentro un momento histórico distinto al de Weber. La finalidad del presente ensayo es hacer una reflexión teóricaacerca de los preceptos de acción social de Weber y mostrar que los mismos no son una herramienta de análisis válida ni adecuada para entender al individuo actual, en especial al campesino. La acción en este sentido se origina en una interacción de individuos o grupos, los cuales a su vez de manera individual o grupal están caracterizados por su sistema psíquico (no solamente se considera la estructura de valores delindividuo, también existen otros elementos tales como las necesidades e impulsos. Este micro-entorno que se genera debe estar en contacto con la complejidad del mundo o

  12. Manuseio anestésico de paciente portador de telangiectasia hemorrágica hereditária (síndrome de Rendu-Osler-Weber: relato de caso Manoseo anestésico de paciente portador de telangiectasia hemorrágica hereditaria (síndrome de Rendu - Osler - Weber: relato de caso Anesthetic management of a patient with hereditary hemorrhagic telangiectasia (Rendu-Osler-Weber syndrome: case report

    Directory of Open Access Journals (Sweden)

    Alexandre Palmeira Goulart

    2009-02-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A telangiectasia hemorrágica hereditária (THH, também conhecida como síndrome de Rendu-Osler-Weber, é uma doença autossômica dominante, caracterizada por displasia vascular mucocutânea e visceral associada a episódios freqüentes de epistaxe e sangramentos gastrintestinais. O objetivo do presente relato foi descrever a anestesia em paciente portador dessa síndrome. RELATO DO CASO: Paciente do sexo masculino, 25 anos, submetido à correção cirúrgica de fratura de órbita esquerda. Portador da tríade epistaxe recorrente, histórico familiar e telangectasia, apresentava diagnóstico de THH. Durante a investigação pré-operatória não foram encontradas malformações vasculares pulmonares, encefálicas ou do trato gastrintestinal. O paciente foi submetido à anestesia venosa total, uma hora após a administração profilática de antifibrinolítico. O sangramento foi considerado normal para a operação proposta e não houve instabilidade hemodinâmica ou necessidade de transfusão sanguínea perioperatória. A extubação ocorreu na sala cirúrgica e o paciente foi liberado para o quarto após 60 minutos e a alta hospitalar foi após 24 horas. CONCLUSÕES: A THH é uma doença autossômica dominante que provoca displasia vascular musculocutânea e visceral. Pode haver perda sanguínea perioperatória acima da esperada para pacientes portadores dessa síndrome. Como o sangramento não é resultado de defeito na cascata de coagulação mas da exposição cirúrgica da estrutura vascular malformada, a conduta perioperatória inclui o emprego de antifibrinolíticos, a realização de hemostasia adequada e da hipotensão arterial induzida, quando não houver contra-indicação. A avaliação pré-anestésica deve incluir a pesquisa de malformações vasculares encefálicas, pulmonares ou do trato gastrintestinal.JUSTIFICATIVA Y OBJETIVOS: La telangiectasia hemorrágica hereditaria (THH, también conocida como

  13. A case of Parkes-Weber syndrome accompanied by pseudo-Kaposi's sarcoma%Parkes-Weber综合征伴假性Kaposi肉瘤一例

    Institute of Scientific and Technical Information of China (English)

    唐金玲; 树叶; 陈卫坚; 罗勇奇; 汤建萍

    2014-01-01

    患者女,8岁7个月.右臀部紫红色斑8年,右下肢较左下肢逐渐增大7年余,多发性赘生物1年.皮肤科检查:右下肢较左下肢肥大且长,皮肤鲜红斑痣,皮温增高及皮肤大量赘生物伴有恶臭.X线、磁共振成像、多普勒超声提示高流速脉管畸形.皮肤病理可见血管增生,成纤维细胞增生及红细胞外溢,诊断为伴假性Kaposi肉瘤的Parkes-Weber综合征.%A girl who aged eight years and seven months presented with prunosus patches on the right buttock for 8 years,gradual unilateral enlargement of the right lower limb for more than 7 years,and multiple vegetations for 1 year.Dermatological examination showed nevus flammeus and multiple malodorous vegetations over the right lower limb with high skin temperature.The right lower limb was thicker and longer than the left lower limb.X-ray examination,magnetic resonance imaging and Doppler ultrasound examination revealed high-flow vascular malformations.Pathological examination of the vegetations showed vascular proliferation,fibroblast proliferation and erythrocyte extravasation.She was diagnosed as Parkes-Weber syndrome accompanied by pseudo-Kaposi's sarcoma.

  14. Long-chain alkanes and fatty acids from Ludwigia octovalvis weed leaf surface waxes as short-range attractant and ovipositional stimulant to Altica cyanea (Weber) (Coleoptera: Chrysomelidae).

    Science.gov (United States)

    Mitra, S; Sarkar, N; Barik, A

    2017-01-30

    The importance of leaf surface wax compounds from the rice-field weed Ludwigia octovalvis (Jacq.) Raven (Onagraceae) was determined in the flea beetle Altica cyanea (Weber) (Coleoptera: Chrysomelidae). Extraction, thin layer chromatography and GC-MS and GC-FID analyses of surface waxes of young, mature and senescent leaves revealed 20, 19 and 19 n-alkanes between n-C15 and n-C35, respectively; whereas 14, 14 and 12 free fatty acids between C12:0 and C22:0 fatty acids were identified in young, mature and senescent leaves, respectively. Tricosane was predominant n-alkane in young and mature leaves, whilst eicosane predominated in senescent leaves. Heneicosanoic acid, palmitic acid and docosanoic acid were the most abundant free fatty acids in young, mature and senescent leaves, respectively. A. cyanea females showed attraction to 0.25 mature leaf equivalent surface waxes compared with young or senescent leaves in a short glass Y-tube olfactometer bioassay. The insects were attracted to a synthetic blend of 0.90, 1.86, 1.83, 1.95, 0.50 and 0.18 µg ml-1 petroleum ether of hexadecane, octadecane, eicosane, tricosane, palmitic acid and alpha-linolenic acid, respectively, comparable with the proportions as present in 0.25 mature leaf equivalent surface waxes. A. cyanea also laid eggs on a filter paper moistened with 0.25 mature leaf equivalent surface waxes or a synthetic blend of 0.90, 1.86, 1.83, 1.95, 0.50 and 0.18 µg ml-1 petroleum ether of hexadecane, octadecane, eicosane, tricosane, palmitic acid and alpha-linolenic acid, respectively. This finding could provide a basis for monitoring of the potential biocontrol agent in the field.

  15. The role of host tree condition in attack of white oaks by the twolined chestnut borer, Agrilus bilineatus (Weber) (Coleoptera: Buprestidae).

    Science.gov (United States)

    Dunn, James P; Kimmerer, Thomas W; Nordin, Gerald L

    1986-11-01

    The twolined chestnut borer, Agrilus bilineatus (Weber) (Coleoptera: Buprestidae), attacks stressed oaks (Quercus spp.) and is associated with extensive mortality of trees in the eastern deciduous forests of North America. We examined host location by the insect and subsequent host mortality in experimentally stressed trees. A. bilineatus adults were able to rapidly and specifically locate stressed oak trees. Up to 160 beetles per week were captured on sticky band traps on the trunks of stressed trees, while beetles rarely landed on unstressed control trees. This suggests that adult borers have an acute perception of host tree "quality", and that this perception is from a distance. One mechanism of host location may be detection of volatile compounds produced by stressed trees.The condition of the host tree appears to regulate both beetle attraction and successful colonization. Mortally wounded (xylem-girdled) trees attracted beetles only until the cambium died. Xylem-girdled trees were attacked early in the beetle flight season, but larvae did not survive to emerge as adults from these trees. In contrast, phloemgirdled trees continued to attract beetles throughout the flight period. Phloem-girdled trees which were heavily attacked by A. bilineatus died late in the season in which they were attacked. Lightly attacked trees survived until the following growing season, and were then heavily attacked and killed. In one stand, phloem-girdled trees were not attacked, healed over the girdling wounds and were still alive three years after girdling. These results indicate that oak trees are only attractive to A. bilineatus within a narrow range of physiological conditions following stress but prior to mortality. A. bilineatus appears to be a proximate agent of mortality in stressed oaks in eastern North America.

  16. Integration of paleoseismic data from multiple sites to develop an objective earthquake chronology: Application to the Weber segment of the Wasatch fault zone, Utah

    Science.gov (United States)

    DuRoss, Christopher B.; Personius, Stephen F.; Crone, Anthony J.; Olig, Susan S.; Lund, William R.

    2011-01-01

    We present a method to evaluate and integrate paleoseismic data from multiple sites into a single, objective measure of earthquake timing and recurrence on discrete segments of active faults. We apply this method to the Weber segment (WS) of the Wasatch fault zone using data from four fault-trench studies completed between 1981 and 2009. After systematically reevaluating the stratigraphic and chronologic data from each trench site, we constructed time-stratigraphic OxCal models that yield site probability density functions (PDFs) of the times of individual earthquakes. We next qualitatively correlated the site PDFs into a segment-wide earthquake chronology, which is supported by overlapping site PDFs, large per-event displacements, and prominent segment boundaries. For each segment-wide earthquake, we computed the product of the site PDF probabilities in common time bins, which emphasizes the overlap in the site earthquake times, and gives more weight to the narrowest, best-defined PDFs. The product method yields smaller earthquake-timing uncertainties compared to taking the mean of the site PDFs, but is best suited to earthquakes constrained by broad, overlapping site PDFs. We calculated segment-wide earthquake recurrence intervals and uncertainties using a Monte Carlo model. Five surface-faulting earthquakes occurred on the WS at about 5.9, 4.5, 3.1, 1.1, and 0.6 ka. With the exception of the 1.1-ka event, we used the product method to define the earthquake times. The revised WS chronology yields a mean recurrence interval of 1.3 kyr (0.7–1.9-kyr estimated two-sigma [2δ] range based on interevent recurrence). These data help clarify the paleoearthquake history of the WS, including the important question of the timing and rupture extent of the most recent earthquake, and are essential to the improvement of earthquake-probability assessments for the Wasatch Front region.

  17. Health-promoting bioactivities of betalains from red dragon fruit (Hylocereus polyrhizus (Weber) Britton and Rose) peels as affected by carbohydrate encapsulation.

    Science.gov (United States)

    Rodriguez, Evelyn B; Vidallon, Mark Louis P; Mendoza, David Joram R; Reyes, Charisse T

    2016-11-01

    Betalains, which are red-purple and yellow pigments, are ideal alternatives to synthetic colorants as they possess strong coloring potential and excellent health-contributing properties. However, the instability of betalains toward normal storage and biological conditions, in addition to the limited number of betalain sources, impedes their food application and diminishes their bioactivities. This study aimed to evaluate the health-promoting bioactivities of betalains from red dragon fruit (Hylocereus polyrhizus (Weber) Britton and Rose) peels as affected by encapsulation in maltodextrin-gum Arabic and maltodextrin-pectin matrices. Encapsulation in maltodextrin-gum Arabic and maltodextrin-pectin matrices afforded dry betalain powders after lyophilization. Optical microscopy imaging showed that the betalain powders consisted of matrix-type and shard-like microparticles. ABTS antioxidant assay revealed that maltodextrin-gum Arabic-betalain (MGB) and maltodextrin-pectin-betalain (MPB) microparticles possessed higher antioxidant capacities (195.39 ± 8.63 and 201.76 ± 4.06 µmol Trolox g(-1) microparticles respectively) than the non-encapsulated betalain extract (151.07 ± 2.57 µmol Trolox g(-1) extract). Duck embryo chorioallantoic membrane (CAM) vascular irritation assay showed that the anti-inflammatory activity of encapsulated betalains was five- to six-fold higher than that of non-encapsulated betalains (P ≤ 0.05). Antiangiogenic activity, as evaluated by duck embryo CAM assay, was enhanced two- to four-fold by carbohydrate encapsulation. Glutathione S-transferase (GST)-inducing activity of betalains was likewise improved four- to five-fold. The study showed that the antioxidant, anti-inflammatory, antiangiogenic and GST-inducing activities of betalains from red dragon fruit peels were enhanced through carbohydrate encapsulation. © 2016 Society of Chemical Industry. © 2016 Society of Chemical Industry.

  18. Topic:Max Weber and the Historiography of the 20th Century Reformation of Religion%论题:马克斯·韦伯与二十世纪宗教改革史学

    Institute of Scientific and Technical Information of China (English)

    刘城

    2010-01-01

    @@ 刘城教授:今天,我们一起来探讨马克斯·韦伯(Max Weber)对于20世纪宗教改革史学研究的贡献与影响.马克斯·韦伯开创了宗教改革史学研究的新思路,他一改往昔单纯从宗教角度与政治角度解说宗教改革的方法,而从经济变革与社会变革的角度论述新教思想的影响.

  19. Aprovechamiento integral del bagazo de la piña de Agave tequilana Weber: Caracterización de fracciones lignocelulósicas obtenidas por un proceso organosolv.

    OpenAIRE

    Quintana Vega, Miram Angelina

    2014-01-01

    En la industria de producción de tequila, se generan anualmente miles de toneladas anuales de bagazo de agave, en su mayoría de la especie Agave tequilana Weber, el cual es rico en moléculas lignocelulósicas. Actualmente este residuo tiene escasas aplicaciones; sin embargo, por su composición química puede ser utilizado para la elaboración de productos con un valor agregado. En el presente trabajo se caracterizaron las fracciones lignocelulósicas obtenidas mediante un proceso “organosolv”, a ...

  20. Aprovechamiento integral del bagazo de la piña de Agave tequilana Weber: Caracterización de fracciones lignocelulósicas obtenidas por un proceso organosolv.

    OpenAIRE

    Quintana Vega, Miram Angelina

    2014-01-01

    En la industria de producción de tequila, se generan anualmente miles de toneladas anuales de bagazo de agave, en su mayoría de la especie Agave tequilana Weber, el cual es rico en moléculas lignocelulósicas. Actualmente este residuo tiene escasas aplicaciones; sin embargo, por su composición química puede ser utilizado para la elaboración de productos con un valor agregado. En el presente trabajo se caracterizaron las fracciones lignocelulósicas obtenidas mediante un proceso “organosolv”, a ...

  1. Detección de restricciones en la producción de agave azul (Agave tequilana Weber var. azul mediante percepción remota

    Directory of Open Access Journals (Sweden)

    Ramón Ceja Ramírez

    2017-07-01

    Full Text Available El agave azul (Agave tequilana Weber, var. azul se utiliza, principalmente, para la producción del Tequila; una bebida espirituosa. El estado de Jalisco, México, contribuye con el 90% de la producción; esto constituye un importante apoyo a la economía del Estado. El objetivo de la presente investigación fue determinar la superficie ocupada por agave azul, que presentó restricciones en su producción en la región Valles, correspondiente a los municipios de Tequila, Amatitán y El Arenal, en el estado de Jalisco, México, por medio de percepción remota. Se utilizó una imagen adquirida por el satélite LANDSAT 5 el 2 de abril de 2011, la cual se procesó para su calibración radiométrica, corrección atmosférica y georreferenciación. La interpretación digital se hizo a través del proceso de clasificación supervisada utilizando la opción de máxima probabilidad. Los campos de entrenamiento se seleccionaron de información de campo y de la base de datos del Consejo Regulador del Tequila (CRT. Los resultados se plasmaron en mapas temáticos; distribución de agave y no agave y distribución de agave con restricciones. El 45% del área ocupada por el cultivo presentó restricciones relacionadas con: aspectos económicos (restricción tipo 1, plagas y enfermedades (restricción tipo 2 y efectos por exceso de humedad del suelo (restricción tipo 3. Para evaluar la precisión de estos datos se aplicó una matriz de error que reportó una precisión general del 73%. Este valor es aceptable considerando la resolución a 30 m del sensor (LANDSAT 5 y la peculiaridad del cultivo. El uso de imágenes LANDSAT por su resolución espectral y radiométrica es aceptable para el estudio del cultivo del agave azul según lo observado en campo y lo expresado por el procesamiento de la imagen.

  2. Significant variations in Weber fraction for changes in inter-onset interval of a click train over the range of intervals between 5 ms and 300 ms

    Directory of Open Access Journals (Sweden)

    Pekcan eUngan

    2014-12-01

    Full Text Available It is a common psychophysical experience that a train of clicks faster than ca. 30 per second is heard as one steady sound, whereas temporal patterns occurring on a slower time scale are perceptually resolved as individual auditory events. This phenomenon suggests the existence of two different neural mechanisms for processing of auditory sequences with fast and slow repetition rates. To test this hypothesis we used Weber’s law, which is known to be valid for perception of time intervals. Discrimination thresholds and Weber fractions (WF for twelve base inter-click intervals (ICI between 5 ms and 300 ms were measured from ten normal hearing subjects by using an up-down staircase algorithm. The mean WF, which is supposed to be constant for any perceptual mechanism according to Weber’s law, displayed significant variation with click rate. WFs decreased sharply from an average value of around 5% at repetition rates below 20 Hz to about 0.5% at rates above 67 Hz. Parallel to this steep transition, subjects reported that at rates below 20 Hz they perceived periodicity as a fast tapping rhythm, whereas at rates above 50 Hz the perceived quality was a pitch. Such a dramatic change in WF indicated the existence of two separate mechanisms for processing the click rate for long and short ICIs, based on temporal and spectral features, respectively. A range of rates between 20 Hz and 33 Hz, in which the rate discrimination threshold was maximum, appears to be a region where both of the presumed time and pitch mechanisms are relatively insensitive to rate alterations. Based on this finding, we speculate that the interval-based perception mechanism ceases to function at around 20 Hz and the spectrum-based mechanism takes over at around 33 Hz; leaving a transitional gap in between, where neither of the two mechanisms is as sensitive. Another notable finding was a significant drop in WF for ICI=100 ms, suggesting a connection of time perception to the EEG

  3. Significant variations in Weber fraction for changes in inter-onset interval of a click train over the range of intervals between 5 and 300 ms

    Science.gov (United States)

    Ungan, Pekcan; Yagcioglu, Suha

    2014-01-01

    It is a common psychophysical experience that a train of clicks faster than ca. 30/s is heard as one steady sound, whereas temporal patterns occurring on a slower time scale are perceptually resolved as individual auditory events. This phenomenon suggests the existence of two different neural mechanisms for processing of auditory sequences with fast and slow repetition rates. To test this hypothesis we used Weber’s law, which is known to be valid for perception of time intervals. Discrimination thresholds and Weber fractions (WFs) for 12 base inter-click intervals (ICIs) between 5 and 300 ms were measured from 10 normal hearing subjects by using an “up–down staircase” algorithm. The mean WF, which is supposed to be constant for any perceptual mechanism according to Weber’s law, displayed significant variation with click rate. WFs decreased sharply from an average value of around 5% at repetition rates below 20 Hz to about 0.5% at rates above 67 Hz. Parallel to this steep transition, subjects reported that at rates below 20 Hz they perceived periodicity as a fast tapping rhythm, whereas at rates above 50 Hz the perceived quality was a pitch. Such a dramatic change in WF indicated the existence of two separate mechanisms for processing the click rate for long and short ICIs, based on temporal and spectral features, respectively. A range of rates between 20 and 33 Hz, in which the rate discrimination threshold was maximum, appears to be a region where both of the presumed time and pitch mechanisms are relatively insensitive to rate alterations. Based on this finding, we speculate that the interval-based perception mechanism ceases to function at around 20 Hz and the spectrum-based mechanism takes over at around 33 Hz; leaving a transitional gap in between, where neither of the two mechanisms is as sensitive. Another notable finding was a significant drop in WF for ICI = 100 ms, suggesting a connection of time perception to the electroencephalography alpha

  4. Max Weber e a objetividade do conhecimento nas ciências da cultura: um breve guia para o texto A ‘Objetividade’ do Conhecimento na Ciência Social e na Ciência Política (1904

    Directory of Open Access Journals (Sweden)

    Jean Henrique Costa

    2011-05-01

    Full Text Available

    O presente artigo objetiva discutir o sentido da objetividade do conhecimento empírico-social na obra de Max Weber, especificamente no texto “A ‘Objetividade’ do Conhecimento na Ciência Social e na Ciência Política”, de 1904. Discute-se, no primeiro momento, a distinção entre conhecimento empírico e juízo de valor; no segundo momento, faz-se uma rápida crítica às idéias de “lei” e “conexão regular” nas ciências sociais para, em seguida, na terceira parte, discutir a estrutura da formação dos conceitos típico-ideais como recursos metodológicos, nos quais, para Weber, expressam a possibilidade da validade objetiva do conhecimento nas ciências da cultura.

  5. Parametrization of the Stillinger-Weber potential for Si/N/H system and its application to simulations of silicon nitride film deposition with SiH4/NH3

    Science.gov (United States)

    Deng, Xiaodi; Song, Yixu; Li, JinChun; Pu, Yikang

    2014-02-01

    We determined the Stillinger-Weber interatomic potential parameters for Si/N/H system based on first principles density functional calculations. This new potential can be used to perform classical molecular dynamics simulation for silicon nitride deposition on Si substrate. During the first principles calculations, cluster models have been carefully and systematically chosen to make sampling of the interatomic potential supersurface more thoroughly. Global optimization method was used to fit the ab initio data into Stillinger-Weber form. We used a recursive method to perform the classical molecular dynamics simulations for silicon nitride (SiN) film growth on Si substrate with SiH4/NH3 gas mixtures. During the simulation, we could clearly observe the silicon nitride film growth progress. In this paper, we present the details of potential derivation and simulation results with different SiH4:NH3 ratios. It is demonstrated that this new potential is suitable to describe the surface reactions of the Si/N/H system and allows us to explore more complex SiN growing process such as plasma-enhanced chemical vapor deposition.

  6. Atividade antibacteriana de Cereus jamacaru DC, Cactaceae

    Directory of Open Access Journals (Sweden)

    Aline Davet

    2009-06-01

    Full Text Available A procura por novos agentes antimicrobianos a partir de plantas vem sendo intensificada e não existem estudos direcionados à avaliação da atividade antimicrobiana de C. jamacaru frente a microrganismos prejudiciais ao homem. Em vista disso, avaliou-se o efeito antimicrobiano do extrato bruto etanólico do lenho (EBLE e do córtex (EBCO desta espécie frente a colônias puras de oito microrganismos patogênicos. Neste estudo foram utilizados os métodos difusão em ágar (meio sólido e CIM (concentração inibitória mínima. Os resultados obtidos neste ensaio preliminar mostraram que EBCO apresentou atividade antimicrobiana mais pronunciada que EBCE e que os microrganismos cujo crescimento foi mais influenciado por EBCO foram Streptococcus epidermidis, Staphylococcus aureus, Pseudomonas aeruginosa e Escherichia coli.

  7. Triterpenoid saponins from Echinopsis macrogona (Cactaceae).

    Science.gov (United States)

    Okazaki, Sachie; Kinoshita, Kaoru; Ito, Satoru; Koyama, Kiyotaka; Yuasa, Hiroshi; Takahashi, Kunio

    2011-01-01

    Triterpene saponins, pachanosides C1, E1, F1 and G1 (1-4), and bridgesides A1, C1, C2, D1, D2, E1 and E2 (5-11) were isolated from Echinopsis macrogona. Compounds 1-4 were saponins with pachanane type triterpene saponins, while the others (5-11) were oleanane type triterpene saponins. While the aglycones of 2-4 and 8-11 were hitherto unknown, the structure of pachanol C was revised in this paper. Their structures were elucidated on the basis of chemical and physicochemical evidence.

  8. Síndrome de Rendu-Osler-Weber o Telangiectasia Hemorrágica Hereditaria (HHT: Descripción de dos casos y revisión de la literatura Rendu-Osler-Weber Syndrome or Hereditary Hemorrhagic Telangiectasia (HHT: Report of two cases and review of literature

    Directory of Open Access Journals (Sweden)

    M Di Cosola

    2005-12-01

    Full Text Available El síndrome de Rendu-Osler-Weber, también conocido como Telangiectasia Hemorrágica Hereditaria, es un desorden vascular cuya prevalencia se estima que afecta a uno de cada 5-8.000 individuos. Se trata de una alteración vascular displásica multisistémica de carácter autosómico dominante, asociada a dos genes, HHT1 y HHT2, que determinan mutaciones en el gen endoglina (ENG, localizado en el cromosoma 9, y por mutaciones en el gen ALK1, localizado en el cromosoma 12. El 95% de los afectados presentan epitaxis recurrentes, con edad media de comienzo a los 12 años e incremento progresivo del sangrado nasal en frecuencia y severidad. Generalmente se presenta asociado a malformaciones arteriovenosas pulmonares y/o múltiples telangiectasias en sistema gastrointestinal, manos, cara, cavidad oral y afectación de otras vísceras. El diagnóstico inicial de HHT continúa basándose en la presencia de signos clínicos compatibles junto con la historia familiar. Para el diagnóstico molecular es necesario secuenciar las regiones codificantes completas de los genes ALK1 y ENG. El test genético no es positivo en el 100% de los pacientes con diagnóstico clínico de HHT, siendo posible no encontrar en un mismo grupo familiar la mutación común. Se revisa la literatura y se presentan dos casos con manifestaciones orales en lengua y labio inferior, sin otras lesiones sistémicas asociadas, tratada en nuestro departamento por problemas odontológicos.Rendu-Osler-Weber syndrome, also known as __Hereditary Hemorrhagic Telangiectasia (HHT, is a vascular disorder with a prevalence estimated in one in 5-8.000 individuals. It is a dominant autosomic transmission determining multisystemic vascular dysplasia, which has been mapped to two genes, HHT1 and HHT2, determined by mutations of the endoglin (ENG gene, localized to the chromosome 9, and by mutations of the activin receptorlike kinase 1 (ALK1 gene, localized on the chromosome 12. The 95% of affected

  9. Plant population and habitat characteristics of the endemic Sonoran Desert cactus Peniocereus striatus in Organ Pipe Cactus National Monument, Arizona

    Science.gov (United States)

    Anderson, Greta; Rutman, Sue; Munson, Seth M.

    2010-01-01

    Peniocereus striatus (Brandegee) Buxb. (Cactaceae) is an endemic Sonoran Desert cactus that reaches its northern range limit in southwestern Arizona. One U.S. population occupies a small area of Organ Pipe Cactus National Monument near the U.S./Mexico international boundary, which has been monitored since 1939. An extensive survey conducted in 2002, covering 177 ha, resulted in the discovery of 88 new plants, in addition to the relocation of 57 plants found in previous surveys. Despite potential increases in population size and spatial distribution, mean plant height and number of basal stems has not significantly changed in recent years. Bud scars revealed that a majority of the population was sexually mature. Peniocereus striatus occurrence increased with decreasing slope, spanned every slope aspect, and was highest on rocky soils, but was noticeably low on west and northwest slopes and areas where severe land degradation had previously occurred. Over half of P. striatus plants were nursed by shrubs and subshrubs, while 40% occurred under leguminous trees. A severe frost in January 2002 top-killed 19% of the population, with the greatest damage in drainage bottoms. However, long-term (1944–2002) climate records show that there has been an overall increase in the number of frost free days in the region, which, coupled with land use change, has implications for the future health of this population.

  10. Um estudo das relações de poder na escola pública de ensino fundamental à luz de Weber e Bourdieu: do poder formal, impessoal e simbólico ao poder explícito

    Directory of Open Access Journals (Sweden)

    Magali de Castro

    1998-01-01

    Full Text Available A escola pública de ensino fundamental de periferia é uma instância onde a circulação de capital econômico e social é restrita e onde a exigência de capital cultural é menor do que em outros níveis e ambientes. Nela travam-se lutas pelo poder e se fazem relações de poder de forma clara e, às vezes, impositiva. Partindo da abordagem teórica de Weber e Bourdieu, este estudo analisa as relações de poder em duas escolas públicas de periferia de Belo Horizonte, em dois momentos: na interação rotineira do dia-a-dia, quando é exercido o poder simbólico e, em determinados momentos, quando a luta por posições de poder ou pela imposição de idéias desvenda o poder, tornando-o manifesto e revelado.In the first grades of elementary public school, mainly in those located on the poor neighborhood, the circulation of economical and social capital is limited and cultural capital is less required than in the other school levels. However, in these schools power relations take place just like as in any organization. Based on Weber and Bourdieu’s studies this research analyses power relations in two public schools in Belo Horizonte. Two moments have been observed: in the first one, unconscious and subliminal power relations are identified in routine habitual relations among school actors. In the second one, power relations are clearly perceived when strugle for power takes place.

  11. A new combination in Peniocereus (Cactaceae Una nueva combinación en Peniocereus (Cactaceae

    Directory of Open Access Journals (Sweden)

    Carlos Gómez-Hinostrosa

    2005-12-01

    Full Text Available Acanthocereus chiapensis Bravo was described from plants collected in Chiapas, Mexico in March 1967. Field observations as well as detailed morphological and anatomical studies revealed that this entity rather belongs to genus Peniocereus. This taxonomic opinion was supported by the presence in this plant of tuberous roots; relatively thin stems; relatively small flowers and fruits, with numerous, weak spines; absence of primary phloem fiber caps on cortical bundles; and presence of minute, inter-cellular interstices in the seeds. Consequently, the following new combination is made herein: P. chiapensis (Bravo C. Gómez-Hinostrosa and H. M. Hernández.Acanthocereus chiapensis Bravo fue descrita con base en plantas recolectadas en Chiapas, México en Marzo de 1967. Observaciones en el campo así como estudios morfológicos y anatómicos detallados, revelaron que esta entidad pertenece más bien al género Peniocereus. Esta opinión taxonómica está apoyada por la presencia en esta planta de raíces tuberosas; tallos relativamente angostos; flores y frutos relativamente pequeños, con numerosas espinas frágiles; ausencia de fibras sobre el floema primario de los haces corticales; y presencia de intersticios inter-celulares en las semillas. En consecuencia se hace la siguiente combinación nueva: P. chiapensis (Bravo C. Gómez-Hinostrosa and H. M. Hernández.

  12. Status Quo of Sociology of Law: A Comparative Study of Max Weber and Hans Kelsen%法律社会学的定位问题:Max Weber与Hans Kelsen的比较

    Institute of Scientific and Technical Information of China (English)

    林端

    2007-01-01

    德国社会学家韦伯(Max Weber,1864-1920)与奥地利法学家凯尔森(Hans Kelsen,1881-1973)对"法律社会学"(Rechtssoziologie,sociology of law)的定位存在异同.他们一个从社会学家的立场,一个从法学家的立场,探讨了"法律社会学"在19世纪末叶跟着社会学(Soziologie)一起诞生的时候,究竟应该如何对这新兴的学问加以定位的问题.他们两位都是法学家出身,同样受到当时哲学思潮新康德主义(Neukantianismus)的影响,主张划分"实然"(Sein)与"应然"(Sollen),也同样对促进德语世界法律社会学的诞生有积极贡献的"自由法学派"(Freirechtlehre)与奥地利法律社会学家艾利希(Eugen Ehrlich,1862-1922)提出了批评意见,但是他们对于"法律社会学"这门新兴的学科,却还是有不完全相同的定位.

  13. Single photon emission computed tomography of the brain in Sturge-Weber syndrome using N-isopropyl-p-( sup 123 I) iodoamphetamine; A comparative study with X-ray computed tomography

    Energy Technology Data Exchange (ETDEWEB)

    Horita, Hideki; Nozaki, Hidetsugu; Hamano, Shinichiro; Aihara, Toshinori (Saitama Children' s Medical Center, Iwatsuki (Japan))

    1990-07-01

    Single photon emission computed tomography (SPECT) of the brain using N-isopropyl-p-({sup 123}I) iodoamphetamine ({sup 123}I-IMP) was performed in 11 children with port wine stain on the face or head, aged 1.0{approx}14.2 years at investigation. Four cases without neurologic symptoms had no specific abnormality on SPECT and X-ray computed tomography (CT). In 4 cases of so-called Sturge-Weber syndrome with developmental quotients (DQ) or intelligence quotients (IQ) more than 80 and the neurologic symptoms consisting of seizures and hemiplegia, SPECT showed localized reduction of IMP accumulation, and CT exhibited calcification, atrophy and enhancement in 2 cases of 3 with contrast medium infusion in the same areas. In 3 cases with DQ of 50{approx}60 and severer neurologic symptoms, SPECT showed diffuse reduction or defect of IMP accumulation in the ipsilateral hemisphere, and CT exhibited remarkable atrophy, calcifications and enhancement in 2 cases with contrast medium infusion in the same hemisphere. In one case with severe neurologic symptoms, SPECT performed at an early stage showed high IMP accumulation in the ipsilateral hemisphere. (author).

  14. Falla cardíaca de alto débito por fístulas arteriovenosas sistémicas en paciente con síndrome de Osler-Weber-Rendu

    Directory of Open Access Journals (Sweden)

    Juan M Senior

    2013-09-01

    Full Text Available Paciente de 65 años, con historia de epistaxis a repetición, sin otros antecedentes patológicos de importancia, quien presentó síntomas de un año de evolución consistentes en disnea de esfuerzo progresiva hasta el reposo, acompañado de ortopnea y edemas que iniciaron en miembros inferiores y progresaron hasta la anasarca. Al examen clínico llamó la atención ingurgitación yugular, hepatomegalia, ascitis y edemas periféricos. La piel presentó telangiectasias en extremidades y mucosas. Se realizaron estudios que reportaron falla cardiaca con severa dilatación de las cavidades derechas, con función sistólica del ventrículo izquierdo conservada. Se demostraron fístulas arteriovenosas en hígado y pulmón. Se estableció el diagnóstico de síndrome de Osler-Weber-Rendu o telangiectasia hemorrágica hereditaria (THH. Se propuso cierre de fístulas por vía percutánea y se planteó posible trasplante hepático como tratamiento; sin embargo, el paciente tuvo una evolución tórpida, presentó fibrilación auricular y embolismo al sistema nervioso central y falleció por enfermedad cerebrovascular.

  15. Correlation Between the Negative Air Ions Released by 3 Species in Cactaceae and the Releasing Passage%3种仙人掌科植物负离子释放量与释放通道的相关性研究

    Institute of Scientific and Technical Information of China (English)

    张万超; 郑俊鸣; 丁旭玲; 彭东辉; 吴仁烨; 邓传远; 郑金贵

    2016-01-01

    在室内密闭玻璃箱内测定了3种仙人掌科(Cactaceae)植物,即银冠(Cotyledon orbiculata var.oblonga)、玉翁(Mammillaria hahniana)和金晃(Notocactus leninghausii),在高压脉冲电刺激下不同剪刺阶段负离子释放浓度、刺数量和气孔数量特征,光镜观察了不同剪刺阶段气孔的形态特征,探讨了高压脉冲电场刺激下仙人掌科植物负离子释放量与释放通道的相关性.结果表明:在高压脉冲电刺激下,银冠负离子浓度随气孔长度的增大而升高(p<0.01),玉翁负离子浓度随其刺数量的减少而降低(p<0.0l),随气孔长度的增大而升高(p<0.01),金晃负离子浓度随其刺数量的减少而降低(p<0.01),随气孔宽长比的增大而升高(p<0.01).从结果推断,在高压脉冲电刺激下,仙人掌科植物释放负离子的过程受其生理活动的影响;仙人掌科植物的刺尖和气孔都是其释放空气负离子的通道,当植物生理活动强度大到改变了其气孔数量特征参数时,气孔就可能成为主要的释放通道.

  16. Maquiavel e weber: a lógica do poder e a ética da ação - O “Príncipe-Centauro” e o “homem autêntico”

    Directory of Open Access Journals (Sweden)

    Luiz Carlos Mariano da Rosa

    2013-07-01

    Full Text Available Sobrepondo-se ao ideal que se impõe à teoria política que circunscreve a sua atividade à busca do bem comum e se detém, por essa razão, na investigação dos princípios capazes de viabilizar a instauração do bom governo, a perspectiva de Maquiavel, através do fundamento da experiência e das exemplificações da historialidade, converge para a descoberta de leis que possibilitem a fundação de um Estado, a obtenção do poder e a sua conservação, a instituição da ciência empírica da política, que, caracterizada pela objetividade e realismo, demanda, no âmbito da relação que envolve ética e política, uma distinção entre a moral privada e a moral pública, implicando uma correspondência com a interpretação de Weber, que analisa os fundamentos do poder e imputa ao Estado a condição de detentor da violência “legítima”, identificando a política como uma relação de dominação e a possibilidade do exercício de duas éticas, a saber, a “ética das últimas finalidades” (“ética da convicção” e a “ética da responsabilidade”.

  17. KARTEZYEN DÜALİZM’İN ‘DEMİR KAFES’İ VE WEBER’İN ANLADIĞI İSLAM TOPLUMU / IRON CAGE OF “CARTESIAN DUALISM” AND THE ISLAMIC SOCIETY UNDERSTOOD BY WEBER

    Directory of Open Access Journals (Sweden)

    Ejder ULUTAŞ

    2016-06-01

    Full Text Available Bryan S. Turner, “Max Weber ve İslam” adlı eserinde Weber’in İslam’a ve İslam toplumlarına yaklaşırken kendi yorumcu sosyolojisinin ölçütlerine uymadığını belirtmektedir. Ona göre Weber’in İslam’a yönelik değerlendirmeleri Marx’ınkinden pek de farklı değildir. Turner, Weber’in doğuya özgü bir toplum modeli olarak tasarımladığı patrimonyalizm kuramına sık sık atıfta bulunmaktadır. Bu düşüncenin, Weber’in oryantalist bir ön yargıya derin bağlılığından kaynaklandığını düşünmektedir. Dolayısıyla bu yazıda, bilim felsefesinde kendisine büyük bir taraftar ve izleyici kitlesi ve geniş hacimli bir tartışma alanı açan Kartezyen felsefenin kısa bir açıklama ve tartışması yapılmaktadır. ‘Batı Aklı’nın düştüğü çıkmazların bir örneği üzerinde durulmaktadır. Weber’in bilim anlayışı hakkında bir değerlendirme yapılmaktadır. İslam toplumlarını incelerken, pozitivist paradigmanın pek de dışına çıkamadığını dile getiren Turner’in eseri üzerinden de bir tartışma yürütülmektedir. Weber’in de kapıldığı düşünülen bu düalizm açmazı ele alınmaktadır.

  18. 基于合法律性的合法性——从韦伯到哈贝马斯%Legitimacy Through Legality:From Weber to Habermas

    Institute of Scientific and Technical Information of China (English)

    孙国东

    2012-01-01

    韦伯具有强烈的民族主义情结,这种情结使他尤为强调学术的文化政治担当,亦使其具有学者和“群众性政治家”双重身份。作为学者,他对现代社会“基于合法律性的合法性”(法理型统治)模式进行了详尽分析;作为群众性政治家,他又明确提出了“领袖民主”(卡理斯玛型统治)合法化模式。这两种理论模式均具有政治现实主义和实证论倾向。哈贝马斯总体上拒绝了韦伯合法化模式的描述性路径,并极力批判了其领袖民主模式;但他亦将其合法化论说建基于韦伯式基于合法律性的合法性模式之上,并做出了可以容纳道德性内容的理论重构。%Weber has a strong nationalist complex which loads him with a special cultural - political promise of the learning and makes him play different roles in his academic career. As a scholar, he gives a highly perceptive analysis of the model of ' legitimacy through legality' ( legal domination) ; while as a ' demagoge'he explicitly puts forth the model of ' Ftihrerdemokratie' ( christmas domination). Both of the two Weberian models of legitimation are the theories with the tendency of positivism. Habermas repudiates the descriptive ap- proach of Weberian model of legitimation in general, and fiercely criticizes Weberian model of ' Ftihrerdemokratie'. Based on Weberian model of' legitimacy through legality' , however, he gives a different theoretical reconstruction which has room for moral elements.

  19. Sturge-Weber综合征患儿的癫痫发作与脑皮层钙化和萎缩的关联性%The correlation of seizure and cortical calciifcation and atrophy in Sturge-Weber syndrome

    Institute of Scientific and Technical Information of China (English)

    田诗云; 高冰冰; 苗延巍; 胡伽尼

    2014-01-01

    Objective To investigate the correlation between Sturge-Weber syndrome (SWS) in children with epilepsy and calcification and brain atrophy of cerebral cortex using susceptibility weighted imaging(SWI). Methods Fourteen patients (8 girls and 6 boys; age range, 0.8–10.0 years; mean age, 4.15±2.84 years) with Sturge-Weber syndrome were recruited and performed MRI examination. All patients with unilateral lesions were located in one side of the cerebral hemispheres. MR protocols included axial and sagittal T1-weighted, axial fast spin-echo (FSE) T2-weighted, SWI and contrasted T1-weighted. All raw data of SWI were processed by using the Signal Process in Neuroimage (SPIN) software. After determining the location and realm of SWS lesions, the calciifcation scores of the affected and brain atrophy ratio (BAR) were measured and calculated. The clinical data of each child were recorded, including the age of first seizure, seizure frequency (Score of seizure frequency, SSF),duration of epilepsy and IQ scores. The correlations of calcification scores of the affected and BAR and seizure variables (age of ifrst seizure, SSF and duration of epilepsy) were analyzed by Spearman correlation analysis in SPSS 17.0 software.Result In all, the affected brain parenchyma showed different extent brain atrophy, and then 7 cases with cortex calciifcation. A signiifcantly positive correlation between BAR and calciifcation was found (r =0.78,P=0.00). There was a signiifcantly negative correlations between BAR and ifrst seizure age (r =-0.77,P=0.00). Moreover, a signiifcantly negative correlation (r=0.54,P<0.05) between BAR and IQ scores was also found, meaning the severer atrophy of brain, the lower intelligent level of children. The IQ scores of children with obvious calciifcation (score=2) is signiifcantlydecreased than without calciifcation (score=0) (55±42,96±13,P=0.03).Conclusions There is a relationship between the degree of brain atrophy and the age ofifrst seizure in SWS. And

  20. Floodplain Mapping, Weber County, Utah, USA

    Data.gov (United States)

    Federal Emergency Management Agency, Department of Homeland Security — The Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the...

  1. Sturge-Weber syndrome: A case report

    Directory of Open Access Journals (Sweden)

    Mukhopadhyay S

    2008-05-01

    Full Text Available A 6½ year-old female child has been described. The condition is characterized by port wine stains in the body, massive gingival overgrowth, history of convulsive disorder, and dilated ocular vessels.

  2. 耐盐药蒲公英(Taraxacum officinale Weber)愈伤组织筛选及生理生化特性分析%Selection and Characterization of Salt-tolerant Calli of Taraxacum o fficinale

    Institute of Scientific and Technical Information of China (English)

    张新果; 陈显扬; 姜丹; 李银心

    2008-01-01

    为获得耐1.5%NaCl的药蒲公英(Taraxacum officinale Weber)愈伤组织.以药蒲公英叶片外植体为材料诱导愈伤组织.以NaCl为选择因子.从愈伤组织直接筛选.在选择培养基上,大部分愈伤组织褐化死亡,个别褐化死亡的愈伤组织周围有少量新的细胞团长出,将其转接到新鲜的选择培养基上,每3周继代一次.经3个月继代筛选获得了耐1.5%NaCl的药蒲公英细胞团.以普通愈伤组织为对照,发现随着NaCl浓度升高,耐盐愈伤组织的相对生长率下降但显著高于对照;且随着盐胁迫处理时间延长持续升高,而普通愈伤组织对照几乎停止生长.说明耐盐愈伤组织具有相对稳定的耐盐性.在蛋白水平上,耐盐愈伤组织与对照愈伤组织差异明显,SDS-PAGE分析显示:耐盐愈伤组织比对照多出一条34 kD大小的蛋白带.且30 kD、18 kD左右的蛋白带明显上调.相同处理条件下耐盐愈伤组织脯氨酸的增加幅度高于对照.盐胁迫条件下,耐盐愈伤组织的超氧化物歧化酶(Super oxidasedimutase,SOD),过氧化物酶(Peroxidase,POD)和过氧化氢酶(Catalase,CAT)活性明显高于对照.且随着处理时间的延长和盐浓度的增加呈现升高的趋势,而对照则呈现先升高后下降的趋势.结果说明耐盐愈伤组织一方面通过小分子有机溶质如脯氨酸的方式调节其渗透平衡,另一方面还可通过提高抗氧化能力降低盐分造成的次级伤害.积累蛋白也可能是耐盐愈伤组织调节渗透平衡的一种方式.通过生理生化分析确定我们获得的耐盐愈伤组织为耐盐变异体.

  3. Pereskia aculeata Muller (Cactaceae Leaves: Chemical Composition and Biological Activities

    Directory of Open Access Journals (Sweden)

    Lucèia Fàtima Souza

    2016-09-01

    Full Text Available The aims of this work were to study the chemical composition of the essential oil from the leaves of Pereskia aculeata and to evaluate some biological activities of three leaf extracts. The phenolic content, antioxidant activity, and in vitro antimicrobial and antifungal activities were determined. The methanol extract showed antioxidant activity (EC50 7.09 mg/mL and high polyphenols content (15.04 ± 0.31 mg gallic acid equivalents (GAE/g. The petroleum ether extract exhibited potent antibacterial activity against Escherichia coli, whereas the chloroform extract showed inhibitory activity against Bacillus cereus and Staphylococcus aureus. The petroleum ether and methanol extracts were more effective in inhibiting the growth of Aspergillus versicolor. The possible cytotoxicity of extracts on neuroblastoma SH-SY5Y cancer cell line and the influence on adenylate cyclase (ADCY expression was also studied. P. aculeata chloroform extract showed antiproliferative activity with an IC50 value of 262.83 µg/mL. Treatments of SH-SY5Y neuroblastoma cells with 100 µg/mL of methanol extract significantly reduced ADCY1 expression.

  4. How specialised is bird pollination in the Cactaceae?

    Science.gov (United States)

    Gorostiague, P; Ortega-Baes, P

    2016-01-01

    Many cactus species produce 'bird' flowers; however, the reproductive biology of the majority of these species has not been studied. Here, we report on a study of the pollination of two species from the Cleistocactus genus, cited as an ornithophilous genus, in the context of the different ways in which they are specialised to bird pollination. In addition, we re-evaluate the level of specialisation of previous studies of cacti with bird pollination and evaluate how common phenotypic specialisation to birds is in this family. Both Cleistocactus species exhibited ornithophilous floral traits. Cleistocactus baumannii was pollinated by hummingbirds, whereas Cleistocactus smaragdiflorus was pollinated by hummingbirds and bees. Pollination by birds has been recorded in 27 cactus species, many of which exhibit ornithophilous traits; however, they show generalised pollination systems with bees, bats or moths in addition to birds being their floral visitors. Of all cactus species, 27% have reddish flowers. This trait is associated with diurnal anthesis and a tubular shape. Phenotypic specialisation to bird pollination is recognised in many cactus species; however, it is not predictive of functional and ecological specialisation in this family. © 2014 German Botanical Society and The Royal Botanical Society of the Netherlands.

  5. Population viability of Pediocactus brady (Cactaceae) in a changing climate

    Science.gov (United States)

    Shryock, Daniel F.; Esque, Todd C.; Huges, Lee

    2014-01-01

    • Premise of the study: A key question concerns the vulnerability of desert species adapted to harsh, variable climates to future climate change. Evaluating this requires coupling long-term demographic models with information on past and projected future climates. We investigated climatic drivers of population growth using a 22-yr demographic model for Pediocactus bradyi, an endangered cactus in northern Arizona.

  6. Taxonomic revalidation and potential distribution of Armatocereus brevispinus Madsen (Cactaceae

    Directory of Open Access Journals (Sweden)

    Christian R. Loaiza S.

    2016-05-01

    Full Text Available We report the first confirmed record for northern Peru of Armatocereus brevispinus Madsen, a species of cactus regarded as endemic to the province of Loja, in the southern region of Ecuador. The record corresponds to a locality placed near the km 18 of the route to Ayabaca (04º42’21.0”S and 79º48’51.0”W, in the district of Ayabaca, within the province of Ayabaca, in the Department of Piura. This records represents an extension of the distributional range known for this species in Ecuador. We analyze its taxonomy and the distribution and conservation status and comments on its biogeography in the Andean region.

  7. Cactaceae endémicas del Perú

    Directory of Open Access Journals (Sweden)

    Mónica Arakaki

    2013-10-01

    Full Text Available 250 especies (Brako & Zarucchi, 1993; Ulloa Ulloa et al., 2004, mayormente cactus arbustivo-columnares. En este trabajo reconocemos 199 endemismos en 32 géneros. Seis géneros, Calymnanthium, Lasiocereus, Matucana, Mila, Oroya y Pygmaeocereus son endémicos al Perú. Esta familia requiere de esfuerzos metódicos para incrementar su representación en los herbarios nacionales, asociados con una evaluación de las poblaciones y de sus hábitats, así como una evaluación de la taxonomía y sistemática de estos taxones. La mayoría de los taxones endémicos ocupan las regiones Matorral Desértico y Mesoandina, desde el nivel del mar hasta los 4000 m de altitud. Se aplicaron las categorías y criterios de la UICN a 58 taxones. Quince taxones endémicos están representados dentro del Sistema Nacional de Áreas Naturales Protegidas por el Estado.

  8. Seed morphology and variation in the genus Pachycereus (Cactaceae).

    Science.gov (United States)

    Arias, Salvador; Terrazas, Teresa

    2004-08-01

    Seeds of 13 Pachycereus species and two Stenocereus species that have been suggested as closely related were examined with the scanning electron microscope. Quantitative features were evaluated using multivariate analysis in order to identify characters that distinguish them. Several species groups were recognized on the basis of 16 qualitative characters. All species studied are keeled. Stenocereus aragonii and S. eichlamii share with most Pachycereus species large size, glossy appearance, and a flat relief on periclinal cells in the lateral region. Pachycereus gatesii and P. schottii are unique in having the smallest seeds and a deeply impressed hilum-micropylar region. P. hollianus does not exhibit micro-relief on periclinal walls in the lateral region, and P. fulviceps has no expanded testa border. Multivariate analysis showed that four characters, length, breadth, hilum-micropylar region length, and angle, made the greatest contribution to distinguishing among species groups. More than 80% of P. fulviceps, P. hollianus, P. tepamo, P. weberi, and S. eichlamii seeds could be classified correctly using four seed features and the percentage was even higher using just two or three features for P. gatesii, P. grandis, P. militaris, P. pringlei, and P. schottii. Testa appearance, testa cell-pattern, and position relative to the rim of the hilum-micropylar region were found to be potentially informative and should be combined with other sources of data in future phylogenetic analyses.

  9. Rhipsalis grandiflora Haw. (Cactaceae propagation by setem cuttings

    Directory of Open Access Journals (Sweden)

    Stancato Giulio Cesare

    2003-01-01

    Full Text Available The genus Rhipsalis is being cultivated as a potted plant since the view of the pendant branches with coloured flowers and fruit is very appreciated. Considering that there is no information about the production of rooted propagules of these species, the goal of this work was to evaluate the development of stem cuttings, stimulated by the application of plant growth regulators. The indolebutyric acid (IBA was tested at 0; 4.07; 5.81, and 11.63 mmol L-1 and the naphthaleneacetic acid (NAA at 0; 4.53; 6.47, and 12.94 mmol L-1 for their activity in promoting roots on apical stem segments of Rhipsalis grandiflora Raw. The base of stem cuttings was dipped into auxin solutions mixed with talc and each one was partially embedded in fir bark (Pinus sp and fern fiber (1:1 in polystyrene propagation flats, placed throughout the rooting period in a greenhouse (50% shading, at 60-90% of relative humidity and temperatures from 20 to 25ºC. The experimental design was a completely randomised with eight treatments (twelve replicates, with samplings at 0; 20; 50; 80, and 150 days. The results indicate no differences between IBA and NAA regarding the dry mass of roots, but an increase in for concentrations of 0 and 4.07 mmol L-1 of IBA and 0 and 4.53 mmol L-1 of NAA, in relation to treatments with auxins. Stem cuttings treated with 4.07 mmol L-1 of IBA and 4.53 mmol L-1 of NAA, had greater dry mass of shoot bud differentiation in relation to those treated with 0 mmol L-1.

  10. Alkaloid production by callous tissue cultures of Cereus peruvianus (Cactaceae).

    Science.gov (United States)

    de Oliveira, Arildo José Braz; Machado, Maria Fátima Pires da Silva

    2003-02-01

    The morphologically undifferentiated cells of nonregenerant callous tissue of Cereus peruvianus cultured in the original medium and in medium supplemented with tyrosine were used as an alkaloid source. Comparison of alkaloid production by C. peruvianus plants and by callous tissues indicated that alkaloid levels were almost twice as high in callous tissues as in shoots of C. peruvianus plants. The ratio of alkaloid concentration between mature plant and morphologically undifferentiated cells of callous tissue was 1:1.7. A relationship between culture medium containing tyrosine and alkaloid production was also observed in the callous tissues of C. peruvianus. Since increased alkaloid production may be induced by additional factors such as tyrosine, increasing levels of tyrosine or other conditions of the culture medium may be considered factors for inducing higher alkaloid production by C. peruvianus callous tissues.

  11. Pereskia aculeata Muller (Cactaceae) Leaves: Chemical Composition and Biological Activities.

    Science.gov (United States)

    Souza, Lucèia Fàtima; Caputo, Lucia; Inchausti De Barros, Ingrid Bergman; Fratianni, Florinda; Nazzaro, Filomena; De Feo, Vincenzo

    2016-09-03

    The aims of this work were to study the chemical composition of the essential oil from the leaves of Pereskia aculeata and to evaluate some biological activities of three leaf extracts. The phenolic content, antioxidant activity, and in vitro antimicrobial and antifungal activities were determined. The methanol extract showed antioxidant activity (EC50 7.09 mg/mL) and high polyphenols content (15.04 ± 0.31 mg gallic acid equivalents (GAE)/g). The petroleum ether extract exhibited potent antibacterial activity against Escherichia coli, whereas the chloroform extract showed inhibitory activity against Bacillus cereus and Staphylococcus aureus. The petroleum ether and methanol extracts were more effective in inhibiting the growth of Aspergillus versicolor. The possible cytotoxicity of extracts on neuroblastoma SH-SY5Y cancer cell line and the influence on adenylate cyclase (ADCY) expression was also studied. P. aculeata chloroform extract showed antiproliferative activity with an IC50 value of 262.83 µg/mL. Treatments of SH-SY5Y neuroblastoma cells with 100 µg/mL of methanol extract significantly reduced ADCY1 expression.

  12. Compatibilidad sexual entre dos tipos de Hylocerus (Cactaceae

    Directory of Open Access Journals (Sweden)

    Roberta Castillo M

    2003-09-01

    Full Text Available Dos de los tipos de pitahaya mas cultivados en la Península de Yucatán, México, difieren principalmente por el color de su cáscara, el primero es de color rojo (Uqroo1, perteneciente a Hylocereus undatus, mientras que en el segundo es color amarillo claro (Uqroo2, hasta el momento también identificado como H. undatus; este último es mas dulce. En ambos tipos de pitahayas, se realizaron autopolinizaciones y polinizaciones cruzadas directas y recíprocas, con el propósito de evaluar el efecto en la cantidad de frutos que lograron su desarrollo. Se midieron algunas variables para detectar la influencia del progenitor paterno en algunas características del fruto. Los testigos se obtuvieron de flores polinizadas libremente. El diseño experimental utilizado fue completamente al azar, con 15 repeticiones por tratamiento. Se encontró que Uqroo1 es autocompatible, mientras que Uqroo2 es autoincompatible. Los testigos de ambos tipos alcanzaron el mismo peso, y los frutos de Uqroo2 logrados por polinización cruzada tuvieron un peso similar al de los testigos o fueron significativamente mas pesados. Algunas variables resultaron positivamente correlacionados; el coeficiente entre el número de semillas y el peso total del fruto fue de r = 0.84. La correlación mas alta (r = 0.97 resultó entre el peso total y el peso de la pulpa. En los frutos obtenidos por polinización cruzada prevalecieron las características del progenitor materno. Se recomienda cultivar la Pitahaya blanca con otro tipo de pitahaya, además de Uqroo1There are two types of pitahaya that are cultivated in Yucatan Peninsula of Mexico. They differ mainly in the skin color of the fruit, one of them has a red skin (Uqroo1, while the other has a light yellow skin (Uqroo2 both belong to Hylocereus undatus (Haworth Britt. & Rose. The yellow skin pitahaya is the sweetest. The studies were conducted using the methods of self pollination and cross pollination, with direct crosses and reciprocal pollination in order to evaluate the effect related to the quantity of fruits that accomplish their growing process. Some characteristic parameters of fruits, thus obtained, were used to detect the possible xenic effect. The control samples were collected from naturally pollinated flowers. The experimental design used was completely random and the experiment was repeated fifteen times. The results revealed that the Uqroo1 turned out to be self-compatible, and their fruits reached one hundred percent of development. On the other hand, Uqroo2 was self-incompatible, that is, it did not accept self pollen. The control samples of both types reached the same weight, and the fruits of the Uqroo2 produced by cross pollination had the same or more weight than the control samples. Several parameters were positively correlated. The coefficient between the number of seeds and the fruit weight was r= 0.84. The highest correlation that was found (r = 0.97 in the fruit weight and the pulp weight within both types. The fruits obtained by cross-pollination maintained the characteristic of the female progenitor. It is suggest intercalate the yellow pitahaya plants with another types or species of pitahaya, other than the Uqroo1

  13. [Sexual compatibility between two types of Hylocerus (Cactaceae)].

    Science.gov (United States)

    Castillo, Roberta; Livera, Manuel; Brechú, Alicia E; Márquez-Guzmán, Judith

    2003-01-01

    There are two types of pitahaya that are cultivated in Yucatan Peninsula of Mexico. They differ mainly in the skin color of the fruit, one of them has a red skin (Uqroo1), while the other has a light yellow skin (Uqroo2) both belong to Hylocereus undatus (Haworth) Britt. & Rose. The yellow skin pitahaya is the sweetest. The studies were conducted using the methods of self pollination and cross pollination, with direct crosses and reciprocal pollination in order to evaluate the effect related to the quantity of fruits that accomplish their growing process. Some characteristic parameters of fruits, thus obtained, were used to detect the possible xenic effect. The control samples were collected from naturally pollinated flowers. The experimental design used was completely random and the experiment was repeated fifteen times. The results revealed that the Uqroo1 turned out to be self-compatible, and their fruits reached one hundred percent of development. On the other hand, Uqroo2 was self-incompatible, that is, it did not accept self pollen. The control samples of both types reached the same weight, and the fruits of the Uqroo2 produced by cross pollination had the same or more weight than the control samples. Several parameters were positively correlated. The coefficient between the number of seeds and the fruit weight was r = 0.84. The highest correlation that was found (r = 0.97) in the fruit weight and the pulp weight within both types. The fruits obtained by cross-pollination maintained the characteristic of the female progenitor. It is suggest intercalate the yellow pitahaya plants with another types or species of pitahaya, other than the Uqroo1.

  14. Discurso e prática religiosa nas Comunidades Eclesiais de Base italianas e brasileiras: um estudo comparativo com base na teoria da mudança social de Max Weber (Speech and religious practice in the Basic Ecclesial Communities in Italy and Brazil

    Directory of Open Access Journals (Sweden)

    Marinete Luzia Francisca de Souza

    2011-12-01

    Full Text Available Este estudo é uma reflexão sobre  o discurso e a prática nas comunidades Eclesiais de Base no Brasil e na Itália. Buscamos demonstrar, a partir de uma pesquisa empírica e teórica, as relações entres duas Comunidades Eclesiais de Base, a Comunidade San Paolo (Roma-IT e a Prelazia de São Félix (Mato Gross-BR, demonstrando que estas baseiam-se em dois elementos: resultam das discussões  advindas do Concílio Vaticano II e estão fortemente ligadas a seus líderes. E, ainda, que tais comunidades ligam-se por fortes laços simbólicos. Este fato permitiu-nos concluir  que a Teologia da Libertação empenhou-se em promover mudanças sociais e em criar um corpo simbólico que a corroborasse. Tais análises foram sustentadas pela teoria da transformação social de Max Weber e, ainda, pelos estudos  de Karl Mannheim e de  Glock e Stark. Palavras-chaves:Transformação social, Teologia da Libertação, prática, discurso. Abstract This study is a reflection of the discourse and practice on the Basic Ecclesial communities in Brazil and Italy. We try to show, from an empirical and theoretical research, the relations between two Christian Base Communities: the San Paolo Community (Rome – IT and the Prelature of São Félix (BR – Mato Grosso, based on two factors: the result of discussions arising out of Vatican II, and the strong link to its leaders. Such communities bind by strong symbolic ties that really allowed us to conclude that Liberation Theology endeavored to promote social changes and to create a symbolic body that corroborates it. Such analysis was supported by the theory of social transformation of Max Weber, by the studies of Karl Mannheim and Glock and Stark. Keywords: Social Transformation; Liberation Theology, Practice, Discourse.

  15. "理解社会学"的功利性--解析马科斯·韦伯《社会科学方法论》的实用主义倾向%The Pragmatic Trait of Max Weber's "Understanding Sociology"

    Institute of Scientific and Technical Information of China (English)

    唐晓峰

    2004-01-01

    马克斯·韦伯(Max Weber,1864-1920)是德国著名的社会学家,政治经济学家,西方宗教社会学的创始人之一.学者们在谈论他的"理解社会学"时,多从新康德主义学派那里寻找其思想渊源.事实上,对新康德主义哲学思想的借鉴,只是韦伯"理解社会学"的实用主义方法论的一种实施.在这种借鉴的背后涵纳的是马克斯·韦伯社会学方法理论的实用主义倾向.本文从"理想类型"这一"理解社会学"的核心概念的提出及特征和韦伯社会学方法论所表现出来的多元论倾向这两方面解析其"理解社会学"的功利性.

  16. 思维路向的差异是东西方文明差异的根源--兼论韦伯论断与李约瑟难题%Thinking Paths:the Root of Culture Differences between East and West--With a Discussion about Weber Thesis and Needham Puzzle

    Institute of Scientific and Technical Information of China (English)

    帅建华; 黄岳钧

    2014-01-01

    The root of culture differences between East and West attracts growing attention from many theorists .Max Weber and Joseph Needham have made a relatively systematical and deep argument about this problem .But there are some biases and mis-understandings in their views .Our study shows the root exists in the differences of the traditional thinking paths of two ancient phi -losophies .The philosophic path of the East is to abstract the general concepts from phenomenon , and the West is to decompose things into the fundamental and productive elements .It also means that the former concerns the infinitely spiritual development and the latter concerns the unlimitedly material development .They are just two extreme of the paths .The two civilizations are indispen-sable to the world , yet the roles of two civilizations are obviously different in the different phases .%对于东西方文明差异的根源问题,很多人都已经关注到,韦伯和李约瑟为此作了较为系统和深入的研究,但都存在一定的偏颇与误区。通过细致的梳理和深入的研究发现,两种文明差异的根源,在于古代哲学传统的思维路向不同,即东方哲学主要是沿着将事物抽象为具有统括意义的概念的路向发展,而西方哲学则主要是沿着将事物“提炼”为具有生发作用的“微粒”的路向发展,它们刚好是两个路向的极端。尽管两种文明都不可缺失,但在不同阶段所起的作用是不同的。

  17. 韦伯与儒家%Max Weber & the Confucianists

    Institute of Scientific and Technical Information of China (English)

    刘东

    2001-01-01

    本文回顾了韦伯学说与儒家传统晚近的三次遭遇,藉此示例了笼罩着当代知识生产的舆论气候及其急剧变迁;在展示了两大文明对话的持续、反复和强韧之余,文章又憧憬着它们彼此激发和深层亲和.

  18. Max Weber o el enigma emocional del origen del capitalismo

    OpenAIRE

    Bericat Alastuey, Eduardo

    2001-01-01

    Un minucioso análisis metateórico de las teorías sociológicas elaboradas por los sociólogos clásicos revela el hecho, sorprendente para la mentalidad «moderna» de los sociólogos que les han sucedido, de que la estructura teórica de cualquier teoría sociociológica resulta a la postre ininteligible si no se consideran las emociones implicadas en los fenómenos sociales que tales teorías tratan de explicar o comprender. La afirmación precedente puede constatarse en La étic...

  19. Coincident optima for two-facility Weber problems

    DEFF Research Database (Denmark)

    Juel, Henrik

    1983-01-01

    The location problem with two new facilities in continuous space is considered, with distance measured by arbitrary norms. Necessary and sufficient conditions for a proposed solution to be optimal are given for several cases. These cases include situations where the cost function is nondifferenti...

  20. Coincident optima for two-facility Weber problems

    DEFF Research Database (Denmark)

    Juel, Henrik

    1983-01-01

    The location problem with two new facilities in continuous space is considered, with distance measured by arbitrary norms. Necessary and sufficient conditions for a proposed solution to be optimal are given for several cases. These cases include situations where the cost function...... is nondifferentiable because facilities coincide...