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  • Digitale Medien  (6)
  • 1990-1994  (5)
  • 1980-1984  (1)
  • 1994  (5)
  • 1984  (1)
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Materialart
  • Digitale Medien  (6)
Erscheinungszeitraum
  • 1990-1994  (5)
  • 1980-1984  (1)
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Impulsive motion of a flat plate in a Rivlin-Ericksen fluid (1984)
    Springer
    Rheologica acta 23 (1984), S. 451-453 
    Details
    ISSN: 1435-1528
    Schlagwort(e): Impulsive motion ; flat plate ; Rivlin-Ericksen fluid
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Abstract The problem of the impulsive motion of a flat plate in a Rivlin-Ericksen fluid is reconsidered. An exact solution for the velocity distribution is found in terms of a definite integral. It is shown that a solution obtained earlier does not satisfy the boundary condition at the plate in the sense of generalized functions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01329198
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  • 2
    Digitale Medien
    Digitale Medien
    Neonatal intestinal perforation in Hirschsprung's disease (1994)
    Springer
    Pediatric surgery international 9 (1994), S. 501-502 
    Details
    ISSN: 1437-9813
    Schlagwort(e): Hirschsprung's disease ; Intestinal perforation ; Neonate
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Over a period of 18 years, 77 of 135 patients treated for Hirschsprung's disease (HD) presented in the neonatal period. Of these 77 patients, 8 had gastrointestinal (GI) perforations. Seven patients were born at full term and 1 at 32 weeks of gestation. Three patients had associated trisomy 21. The site of perforation included rectum in 1 patient, sigmoid in 1, descending colon in 1, transverse colon in 2, caecum in 2, and jejunum in 1. Perforations occurred in ganglionic bowel in 7 patients and in the aganglionic segment in 1. One patient died in the newborn period of overwhelming sepsis secondary to enterocolitis, and histology of the bowel confirmed HD. In 6 patients HD was confirmed on barium enema and suction rectal biopsy, and they subsequently underwent a definitive pull-through operation. The 1 patient in whom the initial barium enema was normal continued to suffer from constipation until the age of 7 years, when the diagnosis of HD was established. He then underwent a pull-through procedure with no further problems. An association between neonatal intestinal perforation and HD must therefore be recognised to avoid delay in the management.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00179451
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  • 3
    Digitale Medien
    Digitale Medien
    Intercellular adhesion molecule-1 (ICAM-1) in the pathogenesis of enterocolitis complicating Hirschsprung's disease (1994)
    Springer
    Pediatric surgery international 9 (1994), S. 237-241 
    Details
    ISSN: 1437-9813
    Schlagwort(e): Hirschsprung's disease ; Enterocolitis ; Intercellular adhesion molecule-1 (ICAM-1)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Intercellular adhesion molecule-1 (ICAM-1) is a glycoprotein that is necessary for the transendothelial migration of leucocytes. This study was undertaken to elucidate the role of ICAM-1 in the pathophysiology of Hirschsprung's disease (HD)-related enterocolitis. Ganglionic and aganglionic portions of bowel from 18 patients with HD who did not have clinical or histological evidence of enterocolitis and 5 patients with HD who developed enterocolitis before or after a pull-through operation were stained using monoclonal antibody against ICAM-1. The bowel specimens obtained from 2 children with imperforate anus at the time of colostomy closure and 3 children at the time of bladder augmentation were similarly stained to act as controls. The ganglionic portion of bowel from patients with HD without enterocolitis and controls showed either no ICAM-I staining or occasional staining of the endothelial lining of submucosal vessels with no staining of the glandular crypt epithelium. In contrast, both ganglionic and aganglionic bowel from patients with enterocolitis complicating HD demonstrated strong ICAM-1 staining in the endothelium of submucosal vessels. Strong expression of ICAM-1 in the glandular crypt epithelium was seen in only 2 patients who had developed enterocolitis before pull-through operations. This study illustrates the importance of endothelial cell activation in the pathogenesis of HD-related enterocolitis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00832246
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  • 4
    Digitale Medien
    Digitale Medien
    Evaluation of risk factors in the development of enterocolitis complicating Hirschsprung's disease (1994)
    Springer
    Pediatric surgery international 9 (1994), S. 234-236 
    Details
    ISSN: 1437-9813
    Schlagwort(e): Hirschsprung's disease ; Enterocolitis ; Child
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Enterocolitis remains a major cause of morbidity and mortality in patients with Hirschsprung's disease (HD). Forty-one (30%) of 135 patients treated for HD from 1975 to 1992 developed enterocolitis; enterocolitis occured preoperatively in 25. It was a presenting feature in 17 infants, including 11 neonates. The proportion of patients presenting with enterocolitis in the neonatal period increased with advancing age, 6 (11%) out of 56 presenting within the 1st week and 5 (24%) out of 21 after 1 week. Episodes of enterocolitis continued in 7 of these 25 patients after a pull-through procedure. Sixteen patients had a first episode of enterocolitis after surgery: 3 after a colostomy, and 13 after a pull-through procedure. The incidence of enterocolitis was 28% in patients with rectosigmoid involvement and 38% in patients with long-segment or total colonic aganglionosis (P= 0.1). Enterocolitis occured in 8 (47%) of 17 patients with trisomy 21 as compared to 33 of 118 (28%) other patients (P= 0.1). Four of the 41 patients died as a result of enterocolitis, 3 in the neonatal period after a colostomy performed at a mean age of 22 days, although the symptoms suggestive of HD were present since birth. Prompt diagnosis and expeditious management are necessary in patients with HD.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00832245
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  • 5
    Digitale Medien
    Digitale Medien
    Hirschsprung's disease in association with trisomy 21 and duodenal obstruction (1994)
    Springer
    Pediatric surgery international 9 (1994), S. 366-367 
    Details
    ISSN: 1437-9813
    Schlagwort(e): Hirschsprung's disease ; Trisomy 21 ; Duodenal obstruction ; Child
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The association of trisomy 21 and Hirschsprung's disease (HD) is well known. In a neonate, HD characteristically presents with delayed passage of meconium and/or intestinal obstruction. However, the presence of duodenal atreasia (DA), which may present similarly, can mask the associated HD. Over an 18-year period, 17 of 135 patients with HD had trisomy 21. Three of these 17 patients presented with duodenal obstruction in the newborn period — 2 had DA and 1 a complete duodenal web. One patient developed a perforation of the jejunum 7 days after laparotomy and duodenoduodenostomy and was found to have HD while the other 2 were later investigated because of persistent unresponsive constipation and confirmed to have HD at 1 and 2 years of age. In spite of associated Down's syndrome and DA, the possibility of HD should be considered in patients who have a complicated postoperative course or persisting abnormal stooling patterns.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01686003
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  • 6
    Digitale Medien
    Digitale Medien
    Unsteady magnetohydrodynamic flows in a rotating elastico-viscous fluid (1994)
    Springer
    Astrophysics and space science 219 (1994), S. 257-264 
    Details
    ISSN: 1572-946X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract This paper points out the errors in the solutions of a research work by N. Nanousis under the same title published in this journal, volume 199, 1993. The correct solutions of the problem for the velocity field and the drag on the plate, by the Laplace transform technique, are presented. The results are discussed for two cases of an arbitrary time-dependent forcing effect. It is shown that the viscoelastic parameterk 〉 0 influences the velocity and introduces reverse flow. For a suddenly accelerated plate,k 〉 0 increases the velocity forz 〈 $$\sqrt {2t} $$ and decreases it forz 〉 $$\sqrt {2t} $$ . In the case of the ramp-type boundary condition,k 〉 0 tends to decrease the velocity.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00628242
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