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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 140 (1998), S. 1013-1017 
    ISSN: 0942-0940
    Keywords: Keywords: Meningioma; elderly; aging; postoperative morbidity; postoperative mortality.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Goal. To assess the morbidity and mortality of meningioma surgery in patients over age 65 and compare our results with matched controls and with the present literature on meningioma surgery in the elderly. Methods. An evaluation of 114 patients undergoing meningioma resection divided into two groups: 57 patients aged 65–87, and a control group of 57 patients aged 25–64 matched by ASA status and tumor site. Operative complications, 30-day mortality, and pre- and postoperative neurologic status were assessed with follow up one to three months. Results. Complication rates in the two groups were similar and were low. Four out of fifty-seven elderly patients (7.0%) had a surgical complication compared with five younger patients (8.8%) Excluding asymptomatic DVT detected by screening, three elderly patients had medical complications (5.2%) compared with two controls (3.5%).  The vast majority of patients—93% of the elderly group and 89.4% in the controls—experienced either improvement or no change in neurologic status at followup one to three months after surgery.  There was one death among elderly patients within thirty days for a mortality rate of 1.8% compared with no mortality in the case control group. The elderly patient who died was an 80-year old man who died of pneumonia in a rehabilitation hospital three weeks after surgery.  Our study group of 57 patients was compared by tumor site and preoperative general health status to other series in the literature. In a review from the literature of 417 patients over age 65 who underwent meningioma surgery, the average 30-day mortality was 16%. The complication rate averaged 39%. Discussion. Our lower morbidity and mortality rates after meningioma surgery in the elderly may be a result of patient selection, surgical technique, or excellent pre- and post-operative care by the resident staff, anesthesiologists, and nurses. It suggests, however, that elderly patients can have meningioma surgery safely.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 38 (1997), S. 3230-3237 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The infinite dimensional highest weight representations of Uqosp(1|2) for the deformation parameter q being a root of unity are investigated. As in the cases of q-deformed nongraded Lie algebras, we find that every irreducible representation is isomorphic to the tensor product of a highest weight representation of sl2(R) and a finite dimensional one of Uqosp(1|2). The structure is investigated in detail. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 38 (1997), S. 2148-2153 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: In this paper the coherent state for glq(n)-covariant oscillators is constructed and is shown to satisfy the completeness relation. And the q-analog of quantum mechanics in n dimensions is obtained by using glq(n) oscillators. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food quality 21 (1998), S. 0 
    ISSN: 1745-4557
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Oyster mushrooms, Pleurotus sajor-caju, were grown on chopped corn stover substrate with increasing amounts of cracked corn supplementation and were harvested at immature and mature stages of growth. Descriptive terms for mushroom color, texture, and flavor were generated and used to determine the impact of cracked corn supplementation on the sensory attributes of fresh and stored (5C for 48h) immature mushrooms and of fresh mature oyster mushrooms. Results indicated that supplementation with cracked corn significantly (P 〈 0.05) affected the texture attributes, i.e., tough, rubbery, and fibrous of the oyster mushroom. When factor analysis (FA) was applied to the descriptor data, three factors were identified in the immature fresh and immature stored oyster mushrooms data which explained 86 and 82%, respectively, of the variation. FA of data from the mature oyster mushrooms identified 3 factors which explained 89% of the data variation.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-2307
    Keywords: Arginase ; Gastric cancer ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract High levels of arginase have been detected in gastric adenocarcinoma. To examine the hypothesis that this is due to macrophage infiltration into the tumour, we localized the cellular distribution of arginase by immunohistochemical staining. We examined gastric adenocarcinomas and their corresponding normal tissues (n=45), leiomyomas (n=2), leiomyosarcomas (n=3), human gastric adenocarcinoma cell lines (n=3), and benign gastric ulcers (n=4) by the avidin-biotin-peroxidase complex technique. Macrophages with strong arginase immunoreactivity were observed infiltrating both gastric normal and cancer tissues. No arginase immunoreactivity was observed in normal mucosal gland, muscular and serosal tissues or benign gastric ulcers. The immunoreactivity of arginase was positive but heterogeneous in most specimens of gastric adenocarcinoma (62.2%) and was absent from gastric intestinal metaplasia, leiomyomas and leiomyosarcomas. Among the 28 neoplasms with arginase immunoreactivity, scattered immunoreactivity was also noted in adjacent dysplastic glands in 12 (42.8%) specimens. Arginase immunoreactivity was observed in all three gastric cancer cell lines. Arginase is present in the cytoplasm but not in the nucleus. These data suggest that the high arginase levels in adenocarcinoma cancer tissues originate largely from cancer cells.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1617-4623
    Keywords: Key words Protein kinase ; Wounding ; Abscisic acid ; Methyl jasmonate ; Signal transduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A cDNA encoding a protein kinase, which may be involved in the wound signal transduction pathway, was isolated from Nicotiana tabacum. The cDNA, named WAPK, is 1227 bp in length and contains an ORF of 1017 bp. The ORF encodes a polypeptide of 339 amino acids, with a calculated molecular mass of 38234 Da. Analysis of the deduced amino acid sequence shows that the N-terminal region of WAPK contains a catalytic region composed of eleven subdomains which are typically found in Ser/Thr protein kinases. This region shows 78–84% sequence identity with similar regions of abscisic acid (ABA)-induced and external-stimuli-responsive protein kinases. However, the C-terminal region of WAPK shows little homology with similar regions of Ser/Thr protein kinases, except for a 16-amino acid stretch near the end of the catalytic domain. Kinase assays using a WAPK fusion protein expressed in E. coli revealed that WAPK autophosphorylates on serine residue(s). The WAPK gene is predominantly expressed in flowers, moderately in roots, and poorly in leaves. Transcripts were not detected in stems. The WAPK gene was induced by wounding (within 1.5 h), by abscisic acid (within 0.5 h), and by methyl jasmonate (within 2 h). The induction pattern of WAPK mRNA upon wounding was not affected by treatment with diethyldithiocarbamic acid, a reagent which inhibits jasmonic acid biosynthesis. These results suggest that the WAPK gene is regulated by ABA in the wound signal transduction pathway.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 261 (1999), S. 374-380 
    ISSN: 1617-4623
    Keywords: Key wordsEscherichia coli ; ribA ; GTP cyclohydrolase II ; SoxS binding ; RNA polymerase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The ribA gene, encoding GTP cyclohydrolase II in Escherichia coli, is a member of the soxRS regulon, which is induced by superoxide-generating agents. By evaluating lacZ expression driven by the ribA promoter carrying different lengths of upstream region in a monolysogen, we found that the superoxide-responsive element resides between 56 and 94 nucleotides upstream of the transcriptional start site. Purified SoxS protein bound to this region and protected nucleotides between positions −80 and −58 from degradation by DNase I. This region contains a putative SoxS-binding sequence (soxbox) in reverse orientation. The SoxS protein interacted specifically with four guanine residues within the soxbox sequence, as demonstrated by methylation interference analysis. These results clearly indicate that SoxS binds to the reversed soxbox sequence in the ribA gene, while in other known genes of the soxRS regulon it binds to the normally oriented soxbox. Possible modes of interaction between SoxS and RNA polymerase are discussed.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Resume On a mis au point une installation d'essai ‘rigide’ qui absorbe l'énergie dans le but d'obtenir une rupture en traction diagonale stable et contrôlée dans des poutres en béton armé présentant un cisaillement critique. Le dispositif permet le contrôle du chargement complet par rapport à la flèche à mi-portée (y compris la région post-pic) des poutres présentant un cisaillement critique. Pour rendre l'installation d'essai rigide et l'absorption d'énergie possible, on a réalisé deux sortes de dispositifs, l'un équipé de poutres d'acier parallèles, et l'autre d'une poutre d'acier en croix. Ce dernier, où la poutre en croix sert d'élément ‘rigidifiant’, est beaucoup plus rigide que le dispositif avec des poutres d'acier parallèles et, par conséquent, il présente une meilleure stabilité pour l'obtention d'une rupture contrôlée et stable, même pour les poutres de béton de plus haute résistance. Les résultats indiquent que, par rapport à la flèche à mi-portée de poutres de béton armé de haute résistance présentant un cisaillement critique, la branche post-pic de la courbe de la charge est relativement plus accentuée que celle de poutres de béton de résistance normale.
    Notes: Abstract An energy absorbing ‘stiff’ test facility has been developed for obtaining stable and controlled diagonal tension failure in shear-critical reinforced concrete beams. The test facility allows the monitoring of the complete curve of load versus mid-span deflection (including the post-peak region) of the shear-critical beams. For stiffening the existing test facility and to provide the energy absorption capability, two kinds of test set-up have been developed: the parallel steel beam test set-up and the cross steel beam test set-up. The test set-up with a cross steel beam as the stiffening element is much stiffer than the parallel steel beam test set-up and hence more stable for obtaining a controlled and stable failure even for the higher strengh concrete beams. The results indicate the post-peak branch of the load versus mid-span deflection of the shear-critical high strength concrete beams is relatively steeper than that of normal strength concrete beams.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1998
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a child with clinical and radiological manifestations characteristic of both V'aradi syndrome (oral-facial-digital syndrome type VI) and Thurston syndrome (oral-facial-digital syndrome type V). The findings have not been reported previously, and we believe that it represents a new variant.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 49 (1999), S. 909-914 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this paper the decomposition of the creation and annihilation operators of gl √q(n covariant oscillator algebra is discussed when the deformation parameter q is a (s+1)-th primitive root of unity.
    Type of Medium: Electronic Resource
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