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Abstract  

Compact and weakly compact elements of the group algebra L 1 (G) of a locally compact group G, have been considered by a number of authors. In these investigations it has been shown that, if G is non-compact, then the only weakly compact element of L 1 (G ) is zero. Conversely, if G is compact, then every element of L 1 (G) is compact. For 1<p<∞, let PM p (G)and PF p (G) denote the closure of L 1 (G), considered as an algebra of convolution operators on L p (G), with respect to the weak operator topology and the norm topology, respectively, in B(L p (G), b), the bounded linear operators on L 1 (G). We study the question of characterizing compact and weakly compact elements of the algebras PM p (G)and PF p (G).

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Abstract  

There are two results in the literature that prove that the ideal lattice of a finite, sectionally complemented, chopped lattice is again sectionally complemented. The first is in the 1962 paper of G. Gr�tzer and E. T. Schmidt, where the ideal lattice is viewed as a closure space to prove that it is sectionally complemented; we call the sectional complement constructed then the 1960 sectional complement. The second is the Atom Lemma from a 1999 paper of the same authors that states that if a finite, sectionally complemented, chopped lattice is made up of two lattices overlapping in an atom and a zero, then the ideal lattice is sectionally complemented. In this paper, we show that the method of proving the Atom Lemma also applies to the 1962 result. In fact, we get a stronger statement, in that we get many sectional complements and they are rather close to the componentwise sectional complement.

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This squib argues against the predicate inversion analysis of English existential there-sentences. The main problem of this analysis is caused by wh-extraction data. Wh-extraction is possible of and from the noun phrase in there-BE (there-sentences with the copula), but not in there-V sentences (there-sentences with other verbs). This is not predicted by the predicate inversion analysis. It is shown that the predicate inversion analysis is adequate (with some modifications) for there-V sentences and locative inversion. Existential there-sentences, however, need to be analysed differently. They are derived from a predication configuration in which there is the subject of predication and the sentence states about this location that it contains the kind and amount/number of individuals given in the noun phrase. The existential reading arises from the interaction of this predication configuration and existential closure of an empty D-layer of the noun phrase.

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Bivalve larvae use catch muscles for rapid shell closure and maintenance of the closed condition. We used specific antibodies against the muscle proteins together with phalloidin and neuronal markers, FMRFamide and serotonin (5-HT), to analyze mutual distribution of muscle and neuronal elements in larvae of the mussel, Mytilus trossulus, and the oyster, Crassostrea gigas. At trochophore and early veliger stages no anatomical connections between muscular and nervous system were detected. By the pediveliger stage the 5-HT innervation of the anterior adductor developed in oyster only, while rich FMRFa innervation of the adductor muscles developed in both species. Possible roles and mechanisms of FMRFamide and serotonin in the regulation of the catch state are discussed.

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Bal alhasi fájdalom diagnosztikai és terápiás nehézségei

Diagnostic and therapeutic difficulties of left lower quadrant abdominal pain

Magyar Sebészet
Authors:
András Antal
and
Janaki Hadijev

Absztrakt

Betegünknek bal oldali pyelonplasztika miatt hasfali sérve alakult ki. Anamnaesisében még colondiverticulumok, a lumbalis csigolyák arthrosisa, bal oldali csípőprotézis-beültetés és hasi metszésből hysterectomia szerepelt. Speciális CT-manőverek és -technikák hiányában a kis sérvet csak laparoscoppal tudtuk diagnosztizálni. A hasfali sérv felszívódó varratos kezelése csak átmeneti eredménnyel járt. A Composix háló beültetése és kapcsos rögzítése posztoperatív neuralgiát váltott ki. A szövődményt a kialakult adhaesiók oldásával és a kapcsok eltávolításával kezeltük.

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Different types of forest use significantly changed the structure and species composition of European temperate forests. Herbaceous species and seedlings are important parts of the forest ecosystem, thus it is necessary to understand the effects of stand characteristics on the species composition of the understory. In our study we assessed the main factors that affect the species composition of herb and tree seedling assemblages in Quercus petraea and Q. cerris dominated stands (age 50–150 years) in the Bükk Mountains, Hungary. The relationship between the studied assemblages and explanatory variables (tree species composition, stand structure, canopy closure and topography) were explored by Redundancy Analysis (RDA). The occurrence of herbaceous species was affected by canopy closure, stand structure (mean DBH and DBHcv of trees), topography and the density and diversity of shrub layers. Oak forest species were associated with more open stands with sparsely distributed large trees, while mesic forest species were positively associated with heterogeneous stand structure, low shrub density, and western exposure. Seedlings of trees and shrubs showed a dispersal limited phenomenon. The composition of seedlings was significantly influenced by the mean DBH of trees, the structural heterogeneity of the overstory, the tree species diversity and the density of shrub layers. However the seedlings of both dominant oak species required the same stand structure, sessile oak was able to regenerate almost exclusively in those stands where it was dominant in the overstory, which is significant for the management of the species. Generally, forest management affects species composition and structure of the overstory, accordingly it had direct and indirect effects on the understory community as well.

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Orvosi Hetilap
Authors:
Örs Nagy
,
Sándor-György Zuh
,
Attila Kovács
,
Árpád Sólyom
,
Réka Sólyom
, and
István Gergely

.: Asymmetric closure of ischiopubic synchondrosis in pediatric patients: correlation with foot dominance. Am. J. Roentgenol., 2004, 182 (2), 361–365. 5 van Neck, M

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Orvosi Hetilap
Authors:
Renáta Bor
,
Klaudia Farkas
,
Anita Bálint
,
Mónika Szűcs
,
Szabolcs Ábrahám
,
Gellért Baradnay
,
Tibor Wittmann
,
Zoltán Szepes
,
Ferenc Nagy
, and
Tamás Molnár

Bevezetés: A tumornekrózis-faktor-alfa-gátlókat egyre gyakrabban alkalmazzák a súlyos Crohn-betegség kezelésében. Célkitűzés: A szerzők retrospektív módon értékelték a perianalis fisztulázó Crohn-betegség miatt indított anti-TNF-alfa terápia rövid és hosszú távú hatékonyságát. Módszer: Tumornekrózis-faktor-alfa-gátló kezelésben részesült 68 betegnél meghatározták a luminaris és perianalis aktivitás változását, a komplett fisztulazáródás arányát és a műtéti beavatkozások szükségességét. Eredmények: A kezelés megkezdése után 12 héttel a betegek több mint 80%-ánál a perianalis aktivitás csökkent, 60%-ukban komplett remissziót láttak. Egyéves kezelés alatt a betegek harmadánál a fisztulák záródtak, de a biológiai szer elhagyását követően minden második személynél a sipolyok recidiváltak. Legtöbb esetben a tumornekrózis-faktor-alfa-gátló mellett szükség volt immunszuppresszív kezelésre. A befejezett egyéves terápia alatt a betegek 45%-ánál legalább egy alkalommal végeztek sebészi beavatkozást, többségében ismételt seton-drenázst vagy tályogfeltárást. Következtetések: A tumornekrózis-faktor-alfa-gátló kezelés hatékony a perianalis Crohn-betegség kezelésében. Az immunszuppresszív szerek sok esetben nem hagyhatók el, és nagy arányban van szükség rectummegtartó sebészi beavatkozásokra. A terápia elhagyása utáni magas sipolyrecidíva-arány miatt mérlegelendő a folyamatos tumornekrózis-faktor-alfa-gátló kezelés. Orv. Hetil., 2013, 154(49), 1943–1948.

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A negatív nyomású sebkezelés helye a modern sebészetben

The role of negative pressure wound therapy in the modern surgery

Orvosi Hetilap
Authors:
Aref Rashed
,
János Fülöp
,
Lóránd Caicut
,
Roland Tóth
, and
Rezan Watti

. Wound Repair Regen. 2008; 16: 460–465. 7 Wackenfors A, Sjögren J, Gustafsson R, et al. Effects of vacuum-assisted closure therapy on inguinal wound

Open access

The present study purports to introduce, elucidate and examine reform ideas andinstitutions pertaining to criminal investigation in the purview of Act XIX of 1998 on Criminal Procedure, which came into force in Hungary on 1 July, 2003 through theexplication of the regulation of the different phases and moments of the completion of the investigation and its closure. Besides clearly introducing the general objectives and scope ofinvestigations, as well as the rights and obligations of the concerned parties, the study focuses on the prescribed procedural obligations of the authorities at each stage of the investigation as pursuant to Act XIX of 1998, with reference to the changes incurred in view of the former regulation. After meticulously highlighting the intention of the lawmaker implied by the effected changes and evaluating these, thereby also providing a basis for inter­national comparison, it concludes that the basic objectives of the new, “reform”criminal procedures law included the shift of emphasis from the phase of the investigation to that of the judicial proceedings. The possibility of the achievement of this objective will be tested by the future practice of law applying organs.

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