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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Animal Feed Science and Technology 19 (1988), S. 111-120 
    ISSN: 0377-8401
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La déconnection splénopancréatique (DSP) a été conçue et répandue comme une amélioration technique au shunt splénorénal distal (SSRD) pour maintenir sa sélectivité et préserver la perfusion portale. La stabilité hémodynamique et métabolique des hépatocytes, reconnue dans l'opération combinée SSRD-DSP, devrait augmenter la survie. Dans cette étude non randomisée, il y avait 145 patients consécutifs (Child A/B) avec varices oesophagiennes ayant saigné. Quatre vingt treize patients ont eu un SSRD seul et 52 patients, un SSRD-DSP. Les deux groupes étaient similaires avant la chirurgie. La survie moyenne était de 24±12 mois (SSRD) et de 27±14 mois (SSRD-DSP), respectivement. La mortalité opératoir de SSRD-DSP était de 3.8%. L'incidence de pancréatite post-opératoire était de 7.7% après SSRD-DSP et de 3.2% après SSRD seul chez des patients ayant une fibrose hépatique secondaire à une bilharziose dans 86% des cas. Le pourcentage de perméabilité de l'anastomose était élevé et la récidive hémorragique par varices était basse dans les deux groupes. L'encéphalopathie clinique était significativement moins fréquente après SSRD-DSP (p〈0.05). Ajouter une DSP à une SSRD réduisait de façon significative l'incidence de l'hyperbilirubinémie chronique chez le patient avec bilharziose (p〈0.05) et la bilirubinémie (p=0.001) dans les deux groupes. La perfusion portale était préservée après SSRD-DSP chez tous les patients ayant eu une angiographie. La survie globale était de 84% après SSPD et de 88% après SSPD-DSP. La survie des patients avec bilharziose était de 95% et de 96%, respectivement, après SSPD et SSPD-DSP. Parmi les patients sans bilharziose dont les caractéristiques étaient comparables aux patients avec bilharziose, la survie était plus longue après SSPD-DSP (92%) qu'après SSPD seul (77%). Ces résultats montrent que: (1) la mortalité opératoire de SSPD-DSP est basse avec un taux de récidive hémorragique par varices également bas, (2) la SSPD-DSP maintient une perfusion portale, augmente la survie et réduit l'incidence de l'encéphalopathie surtout chez les patients avec cirrhose non alcoolique et hépatopathie mixte, (3) dans la bilharziose, la SSPD-DSP réduisait l'incidence d'hyperbilirubinémie chronique mais augmente le risque de pancréatite.
    Abstract: Resumen La desconexión esplenopancreática (DEP) fue concebida e implementada como un complemento técnico del “shunt” por anastomosis esplenorrenal distal (AERD) para mantener su selectividad y preservar la perfusión portal. Sesupone que la propuesta estabilidad hemodinámica y metabólica de los hepatocitos después de la AERD-DEP debe mejorar la sobrevida. En el presente estudio no randomizado, 145 pacientes consecutivos con sangrado varicoso (Child A/B) fueron electivamente sometidos a “shunt” selectivo con AERD, 93 casos, y a AERD-DEP, 52 casos. Los grupos, que presentaban características similares antes de la cirugía, tuvieron un seguimiento promedio de 24±12 meses (AERD) y 27±14 (AERD-DEP) meses. La AERD-DEP tuvo una mortalidad operatoria de 3.8%. Pancreatitis postoperatoria se desarrolló en 7.7% de los pacientes con AERD-DEP y en 3.2% de los pacientes con AERD solamente; la fibrosis hepática esquistosomiásica representó el 86% de los casos mórbidos. La tasa de permeabilidad del “shunt” se mantuvo alta y la de hemorragia varicosa recurrente apareció baja en los dos grupos. La encefalopatía clínica resultó significativamente reducida después de la AERD-DEP (p〈0.05). La adición de la DEP redujo la incidencia tanto de la hiperbilirrubinemia crónica en los pacientes esquistosomiásicos (p〈0.05) como los cambios en la bilirrubinemia total en todos los pacientes (p=0.001). La perfusión portal apareció preservada después de la AERD-DEP en la totalidad de los pacientes estudiados mediante angiografía. La tasa global de sobrevida fue 84% después de AERD y de 88% después de AERD-DEP. Los pacientes esquistosomiásicos exhibieron una tasa de sobrevida de 95% y de 96% después de AERD y de AERD-DEP, respectivamente. La AERD-DEP aumentó la sobrevida a 92%, en comparación con 77% para la AERD, en pacientes cuidadosamente apareados. Estos datos demuestran que: (1) la AERD-DEP exhibe una baja mortalidad y una alta tasa de permeabilidad, con baja incidencia de hemorragia varicosa recurrente, (2) la AERD-DEP mantiene la perfusión portal, logra una mejor sobrevida y reduce la incidencia de encefalopatía, especialmente en pacientes con cirrosis no alcohólica y enfermedad hepática mixta, (3) en la población esquistosomiásica, la AERD-DEP reduce la incidencia de hiperbilirrubinemia crónica, pero incrementa el riesgo de pancreatitis postoperatoria.
    Notes: Abstract Splenopancreatic disconnection (SPD) was conceived and implemented as a technical addition to distal splenorenal shunt (DSRS) to maintain its selectivity and preserve portal perfusion. The proposed hemodynamic and metabolic stability of hepatocytes after DSRS-SPD should improve survival. In this nonrandomized study, 145 consecutive (Child A/B) variceal bleeders were electively subjected to selective shunt with DSRS in 93 and DSRS-SPD in 52 patients. The 2 groups were similar before surgery with a mean follow up of 24±12 (DSRS) and 27±14 (DSRS-SPD) months. DSRS-SPD had an operative mortality of 3.8%. Postoperative pancreatitis occurred in 7.7% after DSRS-SPD and 3.2% after DSRS alone, with schistosomal hepatic fibrosis representing 86% of morbid cases. Shunt patency was high and recurrent variceal hemorrhage was low in both groups. Clinical encephalopathy was significantly reduced after DSRS-SPD (p〈0.05). The addition of SPD significantly reduced both the incidence of chronic hyperbilirubinemia in the schistosomal patients (p〈 0.05) and the difference between the changes in total serum bilirubin in all patients (p=0.001). Portal perfusion was preserved after DSRS-SPD in all of the angiographically-studied patients. The overall survival was 84% after DSRS and 88% after DSRS-SPD. The schistosomal patients showed an incidence of 95% and 96% survival after DSRS and DSRS-SPD, respectively. DSRS-SPD was able to improve survival (92%) better than DSRS (77%) among well-matched nonschistosomal patients. These data show: (1) DSRS-SPD still has low operative mortality and a high patency rate with a low incidence of recurrent variceal hemorrhage, (2) DSRS-SPD maintains portal perfusion, achieves better survival, and reduces the incidence of encephalopathy, especially in patients with nonalcoholic cirrhosis and mixed liver disease, (3) in the schistosomal population, DSRS-SPD reduces the incidence of chronic hyperbilirubinemia but increases the risk of postoperative pancreatitis.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0630
    Keywords: 78.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Ternary ZnSxSe1−x polycrystalline thin films were prepared by evaporation in vacuum of 10−5 Torr. The molecular fractionx varied in the region o≦x≦1. The optical constants (the refractive indexn, the absorption indexk, and the absorption coefficientα) were determined in the wavelength range 300–1600nm. A plot representingα 2=f(hv) shows that the ZnSxSe1−x polycrystalline thin films of different compositions have two direct transitions corresponding to the energy gapsE andE+Δ. The variation in eitherE orE+Δ withx indicates that this system belongs to the amalgamation type. Such variation follows a quadratic equation. The bowing parameter was found to be 0.456 eV, roughly equal to the calculated value 0.60 eV using the empirical pseudopotential method based on the virtual-crystal approximation, in which the disorder effect has not been taken into account.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Radiation Physics and Chemistry 44 (1994), S. 69-72 
    ISSN: 0969-806X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Carbohydrate Research 15 (1970), S. 179-184 
    ISSN: 0008-6215
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0008-6215
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0008-6215
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 10 (1980), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Fifteen children, 6–14 years old, who were heavily exposed to pigeon droppings, presented with cough, chills and breathlessnes on mild exertion. Twelve gave immediate positive skin test reactions to pigeon droppings. Ten of the fifteen also gave a late (Arthus) reaction, and seven gave a positive delayed reaction which was maximal at 24–72 hr. Nine children had precipitins against avian droppings. In ten patients who were tested for lymphocyte transformation, five gave positive responses to both serum and pigeon droppings. Radiological findings of the chest showed parenchymatous infiltrations and diffuse interstitial reticulations, suggestive of extrinsic allergic alveolitis. In a control group of fifteen heavily-exposed children who had no symptoms, immediate and late skin reactions occurred respectively in five and two. One only had a positive precipitin test, and one of five tested had a positive lymphoblastic transformation. In a non-exposed comparable group of children, all tests were negative except for one immediate positive skin response. Children heavily exposed to the inhalation of avian antigens can develop extrinsic allergic bronchiolo-alveolitis.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 26 (1985), S. 2072-2081 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The electrohydrodynamic stability of two cylindrical interfaces influenced by a periodic tangential field is studied. The model allows for general forms of deformations of the interfaces. Two simultaneous ordinary differential equations of the Mathieu type are obtained. The coupled equations are solved by the method of multiple scales and stability conditions are discussed. It is found that the constant tangential field has a stabilizing effect while the tangential periodic field has a stabilizing influence except at resonance points. Graphs are drawn to illustrate the resonance regions in a parameter space. It is also found that the thickness of the jet plays a role in the stability criterion. The frequency of the modulated field can be used to control the position of the resonance regions. The special cases of large modulation and small modulation are also examined. It is found that for large modulation the electric field exhibits an enhanced destabilizing influence.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 445-455 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The electrodynamic stability of two interfaces separating three fluids is studied. A linear model allowing general surface deformations is applied. The case where there are no surface charges present at the interfaces showed a destabilizing influence of the electric field. When there are surface charges on the interface, it is found that the field is still destabilizing but this effect is partially shielded in some situations, which shows some analogy with the nonlinear stability of a single interface.
    Type of Medium: Electronic Resource
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