Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 110 (1999), S. 2189-2194 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The Green dyadic formulation for calculating classical decay rates of admolecules at multiple planar interfaces first published by Chance, Prock and Silbey is reexamined. It is pointed out that, for the case of fluorescing molecules sandwiched between a system of super- and substrate interfaces, the original formalism requires significant modifications in order to lead to results consistent with those obtained from the Sommerfeld radiation theory. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of chemical information and modeling 20 (1980), S. 247-252 
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 8 (1979), S. 1-25 
    ISSN: 0084-6589
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 51 (1986), S. 5210-5213 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Figure la shows the 31P NMR spectrum of freshly isolated rat hepatocytes at 4C; the intracellular Pi resonance (peak C) consists of a main peak with a shoulder on the high field side. The final wash used in preparing the liver cell pellet and the NMR resuspension medium were both phosphate-free. As ...
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International journal of colorectal disease 9 (1994), S. 134-137 
    ISSN: 1432-1262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Des données préliminaires avaient suggéré que la chirurgie colique et rectale laparoscopique pouvait réduire la durée d'hospitalisation. Ces affirmations étaient attribuées à une réduction de la durée de l'iléus post-opératoire. La définition de l'iléus est variable et dans tous les cas subjective. Dans cette étude, l'iléus a été défini comme l'intervalle entre l'opération et le premier passage de gaz ou de selles sans nausées, vomissements ou distension abdominale. Cette étude prospective a été entreprise pour comparer la durée de l'iléus et de l'hospitalisation après chirurgie assistée par laparoscopie (LAC) et laparotomie standard (SC) pour réaliser une proctocolectomie avec réanastomose iléo-anale avec une poche iléale (IPAA). Vingt-deux patients ont subi une chirurgie assistée par laparoscopie et 20 une laparotomie: l'âge, le sexe et l'affection sous-jacente étaient comparables. Seize patients ont subi une chirurgie assistée par laparoscopie et 15 une laparotomie conventionnelle pour recto-colite ulcéro-hémorragique alors que 6 ont subi une chirurgie assistée par laparoscopie et 5 une laparotomie pour polypose. L'intervalle jusqu'à résolution de l'iléus post-opératoire était de 4,2 jours (4–11) dans le groupe opéré sous laparoscopie et 3,3 jours (2–5) dans le groupe ayant subi une laparotomie. La durée d'hospitalisation était similaire dans les deux groupes: 8,7 jours (7–13) lors de chirurgie assistée par laparoscopie et 8,9 jours (6–18) après laparotomie. Ni la durée de l'iléus ni la durée d'hospitalisation n'ont été réduites par l'introduction de la laparoscopie. La confection d'une anastomose iléoanale avec poche assistée par la laparoscopie n'entraîne auçun des avantages théoriques que l'on attribue à la laparoscopie.
    Notes: Abstract Previous data have suggested that laparoscopic colon and rectal surgery may shorten the length of hospitalization. These claims have been attributed to a reduction of the length of ileus. The definition of “ileus” is variable and in all cases is subjective. In this study it was defined as the length of time until the patient passed flatus or stool without nausea, vomiting or abdominal distention. This prospective study was undertaken to compare the duration of ileus and of hospitalization after laparoscopic-assisted (LAC) and standard laparotomy (SC). After restorative proctocolectomy with an ileal-pouch anal anastomosis (IPAA) in both sets of patients. Twenty-two patients underwent LAC and 20 age, sex, and diagnosis-matched controls underwent SC. Mucosal ulcerative colitis (MUC) was the diagnosis in 16 LAC and in 15 SC patients while polyposis was the diagnosis in 6 LAC and in 5 SC patients. The mean time to resolution of postoperative ileus was 4.2 (4–11) days in the LAC group and 3.3 (2–5) days in the SC group. Hospital discharge was similar in each group occurring at a mean of 8.7 (7–13) days after LAC and 8.9 (6–18) days after SC. Neither the length of time for ileus resolution nor the length of hospitalization were reduced in the LAC group. Laparoscopic-assisted IPAA conferred none of the theoretical advantages associated with other laparoscopic procedures.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 8 (1994), S. 130-134 
    ISSN: 1432-2218
    Keywords: Laparotomy ; Laparoscopy ; Colectomy ; Anastomosis ; Colorectal surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Laparoscopic colon and rectal surgery is still in its nascent stages of development. The ease, efficacy, and safety of intracorporeal mechanical colonic anastomosis are contingent upon expensive stapling devices. Although mobilization and mesenteric division are feasible, a method of inexpensive rapid anastomosis is not. A single inexpensive multifire stapler which could be used both to fashion the anastomosis and to close the mesenteric defect would be ideal. Therefore, this prospective randomized study was undertaken to compare the clinical and functional results of laparoscopic colotomy closure performed using the Endopath EMS hernia stapler (EMS; Ethicon Endosurgery Inc., Cincinnati, OH) to results of using standard two-layer hand suturing (HS). Both the colotomy itself and the mesenteric defect closure sites were included in the randomization and analysis. The abdominal cavity was assessed for evidence of anastomotic leakage, abscess, and adhesion formation. In addition, radiographic luminal diameter, bursting strength, and histology were evaluated. Eight healthy pigs were randomized to either the EMS (N=4) or HS (N=4). There was no evidence of leakage, abscesses, or adhesion formation in either group; however, the mesenteric defect revealed more scarring in the HS than in the EMS animals. There were no significant differences in either luminal diameter (HS: mean=0.92 cm; EMS: mean=0.91 cm) or bursting strength (HS: mean=171 mm Hg; EMS: mean=157 mm Hg) (P〉0.05). Histologic analysis also demonstrated no difference in inflammation, necrosis, or fibrosis. This study suggests that this technique can be safely applied to both colotomy closure and mesenteric defect repair. Clinical, histopathologic, and functional results after EMS closure are comparable to standard (HS) closure. Reproduction of this inexpensive means of safe, cost-effective, intracorporeal anastomosis and mesenteric closure should be pursued in human clinical trials.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1530-0358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    International journal of colorectal disease 9 (1994), S. 169-173 
    ISSN: 1432-1262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Des publications récentes ont suggéré que l'examen microscopique de tissu prélevé dans des ulcères anaux chez des patients atteints de SIDA n'était pas une méthode sûre de diagnostic de l'infection virale. Cette étude a été entreprise pour déterminer si les cultures virales (VC) ou les examens immuno-histochimiques (IHC) peuvent améliorer la sécurité du diagnostic en comparaison avec les colorations usuelles à l'hématoxyline et éosine (H&E). Spécifiquement, nous souhaitions identifier des inclusions virales de cytomégalovirus (CMV) ou d'herpès symplex (HSV) pour assurer un diagnostic d'infection à CMV ou HSV. Tous les patients étaient porteurs d'ulcères anaux cliniquement manifestes ou de fissures anales non cicatrisées. La durée des symtômes variait d'une semaine à trois mois avec une moyenne de six semaines. Tous les prélèvements ont fait l'objet de culture virale en complément à la coloration habituelle à l'hématoxyline éosine; des examens immuno-histo-chimiques ont également été réalisés. Vingt-cinq biopsies d'ulcère anal enrobées dans de la paraffine prélevées chez 23 patients mâles (ägés de 27 à 73 ans avec une moyenne de 37,4 ans) atteints de SIDA ou de ARC ont été revus sur une période de 4 ans (1988–1992). L'examen histologique avec coloration à l'hématoxyline éosine a montré chez 6 malades (22%) des inclusions à CMV. Quatre de ces 6 patients ont réagi positivement à un dosage immuno-histochimique (67%) et un s'est révélé positif à la culture virale (17%). Dans les 19 specimens restants qui n'ont pas révélé d'infection à CMV (78%), l'immuno-histo-chimie a été positive chez deux patients (10%) et la culture virale était positive chez un patient (5%). Bien qu'une infection à HSV n'ait pas été mise en évidence dans les prélèvements colorés à l'hemotoxyline éosine, l'immuno-histo-chimie s'est révélée positive chez un malade (3,5%) et la culture virale s'est révélée positive chez 8 patients (29%). L'immuno-histo-chimie constitue donc un bon test de confirmation d'inclusion à CMV et peut être utilisée pour assurer un diagnostic définitif dans des cas douteux. Cependant, ni la culture virale ni l'immuno-histo-chimie ne peuvent remplacer le pathologue soigneux au cours de la recherche d'inclusion virale.
    Notes: Abstract Recent reports have suggested that routine microscopic evaluation of anal ulcer tissue from AIDS patients is not the most accurate way to diagnose viral infection. This study was undertaken to determine if either viral culture (VC) or immunohistochemistry (IHC) can improve the diagnostic accuracy as compared with routine hematoxylin and eosin (H&E) staining. Specifically, we sought to identify inclusion bodies of cytomegalovirus (CMV) or herpes simplex virus (HSV) to assist in the diagnosis of CMV or HSV. All patients had clinical evidence of an anal ulcer or a nonhealing anal fissure. Duration of symptoms ranged from 1 week to 3 months with a mean of 6 weeks. All specimens were submitted for viral culture in addition to routine H&E staining; immunohistochemistry was also performed. Twenty-five paraffin-embedded anal ulcer biopsies from 23 male patients (age range 27–73; mean 37.4 years) with the diagnosis of AIDS or AIDS-related complex (ARC) were reviewed over a 4 year period (1988–1992). Routine H&E staining revealed 6 (22%) specimens with CMV inclusions. Four of these 6 reacted positively with IHC (67%) and one was positive on viral culture (17%). In the remaining 19 specimens that did not reveal infection with CMV (78%), IHC was positive in 2 patients (10%) and viral culture was positive in 1 patient (5%). Although HSV was not seen in any of the specimens on H&E staining, IHC was positive in one patient (3.5%) and viral culture reacted positively in 8 (29%) specimens. Thus IHC is a good confirmatory test for CMV inclusions and can be used to achieve a definitive diagnosis in equivocal cases. However, neither viral culture nor IHC can replace the traditional careful pathologist in the detection of viral inclusions.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1432-2307
    Keywords: Key words Pituitary ; Human ; Somatotroph ; Thyrotroph hyperplasia ; Immunocytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  In patients with protracted primary hypothyroidism, the pituitary is enlarged due to the lack of feedback inhibition by thyroid hormone. In the present work, adenohypophysial biopsies from three women with protracted primary hypothyroidism were investigated by routine histology, immunocytochemistry, double immunostaining, immunoelectron microscopy, and combined immunocytochemistry – in situ hybridization. These methods confirmed the presence of massive thyrotroph hyperplasia and the formation of ”thyroidectomy” or ”thyroid deficiency” cells. A number of thyroidectomy cells were found to be immunoreactive for growth hormone (GH). Double immunostaining and immunoelectron microscopy revealed the presence of bihormonal cells containing both GH and thyroid stimulating hormone (TSH). Immunostaining combined with in situ hybridization revealed GH immunoreactive cells expressing TSH mRNA as well as TSH immunopositive cells expressing GH mRNA. Our findings provide conclusive evidence that somatotrophs may transform to thyrotrophs. Thus, in addition to multiplication of thyrotrophs, transdifferentiation of GH cells to thyrotrophs contributes to the increase of TSH-producing cells. The presence of such bihormonal cells best termed ”thyrosomatotrophs” supports the concept that adenohypophysial cells are not irreversibly committed to the production of one single hormone and that their phenotype can change in response to functional demand.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...