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  • 1
    Electronic Resource
    Electronic Resource
    Colostomy closure (1996)
    Springer
    Diseases of the colon & rectum 39 (1996), S. 605-609 
    Details
    ISSN: 1530-0358
    Keywords: Colostomy closure ; Hartmann's pouch ; Stoma ; Complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: We retrospectively reviewed the records from our past five years of experience with colostomy closure at a large multispecialty hospital to determine postoperative morbidity. RESULTS: From March 1988 to April 1993, 46 patients underwent colostomy closure. Patients ranged in age from 24 to 87 (mean, 41.8) years, and 25 (54 percent) were women. Stomas had been created during emergency operations in 40 patients (87 percent); most operations (54 percent) were for complications of acute diverticulitis. Of the 46 procedures, 40 (87 percent) were end colostomies, and 6 were loop colostomies. Stomas were closed at a range of 11 to 1,357 days after creation (mean, 207 days; median, 116 days). Twenty-six patients (57 percent) underwent colostomy closure alone, and the remainder underwent additional procedures ranging from appendectomy to hepatic lobectomy. Duration of operations ranged from 1 to 9.5 (mean, 4.2) hours, and estimated blood loss averaged 400 ml. Overall hospital stay for closure was 6 to 62 (mean, 11.5) days. Inpatient complications occurred in 15 percent of patients, including congestive heart failure (2 percent), cerebrovascular accident (4 percent), pneumonia (2 percent), enterocutaneous fistula (2 percent), and pulmonary embolus with death (2 percent). The most common longterm complication was midline wound hernia, which occurred in 10 percent of surviving patients. Overall, complications occurred in 24 percent.CONCLUSIONS: Colostomy closure is a major operation; however, with good surgical judgment and technique, associated morbidity and mortality can be minimized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02056935
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  • 2
    Electronic Resource
    Electronic Resource
    Incidence of small-bowel obstruction and adhesiolysis after open colorectal and general surgery (1999)
    Springer
    Diseases of the colon & rectum 42 (1999), S. 241-248 
    Details
    ISSN: 1530-0358
    Keywords: Adhesions ; Complications ; Small-bowel obstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: The study contained herein was undertaken to establish the incidence of small-bowel obstruction, adhesiolysis for obstruction, and additional abdominal surgery after open colorectal and general surgery. METHODS: A retrospective cohort study was performed using patient-specific Health Care Financing Administration data to evaluate a random 5 percent sample of all Medicare patients who underwent surgery in 1993. Of these, 18,912 patients had an index abdominal procedure. Two-year follow-up data documented outcomes of hospitalizations with obstruction, adhesiolysis for obstruction, and/or additional open colorectal or general surgery. RESULTS: Within two years of incision, excision, and anastomosis of intestine (International Classification of Diseases (ICD)-9 code 45), 14.3 percent of patients had obstructions, 2.6 percent required adhesiolysis for obstructions, and 12.9 percent underwent additional open colorectal or general surgery. After other operations of intestine (ICD code 46), 17 percent of patients had obstructions, 3.1 percent required adhesiolysis for obstructions, and 20.2 percent underwent additional open colorectal or general surgery. After operations of rectum, rectosigmoid, and perirectal tissue (ICD code 48), 15.3 percent of patients had obstructions, 5.1 percent required adhesiolysis for obstructions, and 16.4 percent underwent additional open colorectal or general surgery. After other operations on the abdominal region (ICD code 54), 12.4 percent of patients had obstructions, 2.3 percent required adhesiolysis for obstructions, and 8.8 percent underwent additional open colorectal or general surgery. CONCLUSIONS: In this retrospective study of Medicare patients, we learned that bowel obstruction, adhesiolysis for obstructions, and additional abdominal surgery occurred more often after abdominal surgery than was previously published.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02237135
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of previous surgery on abdominal opening time (2000)
    Springer
    Diseases of the colon & rectum 43 (2000), S. 1749-1753 
    Details
    ISSN: 1530-0358
    Keywords: Adhesions ; Operative technique ; Complications ; Economics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract PURPOSE: The purpose of this study was to document prospectively the time required to gain access to the abdomen to perform a planned procedure in patients with and without previous surgery. METHODS: Patients were obtained from the consecutive cases of 11 surgeons at three colorectal surgery centers. Opening time (skin incision to retractor placement) was measured and recorded in the operating room by the circulating nurse or by an independent researcher. Demographic data including the number and type of previous operations and the presence and severity of adhesions were recorded by the staff surgeon. A comparison of opening times between patients with and without previous abdominal operations was conducted. RESULTS: One hundred ninety-eight patients had abdominal operations. Fifty-five percent had previous abdominal procedures. Patients with prior surgery required a mean of 21 minutes to open their abdomens, whereas patients without prior surgery required a mean of 6 minutes (P〈0.01). The median times were 17 and 6 minutes, respectively. Eighty-three percent of patients with prior surgery had adhesions, whereas only 7 percent of patients had adhesions on their initial operation. Patients with prior surgery also had higher grade adhesions (P〈0.001). Irrespective of previous surgery, comparing patients with adhesions with those without, patients with adhesions required a mean of 22 minutes to open, whereas the lack of adhesions resulted in a mean opening time of 6 minutes. CONCLUSIONS: Previous surgery and the presence of adhesions add significant time to opening the abdomen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02236862
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  • 4
    Electronic Resource
    Electronic Resource
    Preliminary X-ray crystallographic analysis of Tritrichomonas foetus inosine-5′-monophosphate dehydrogenase (1995)
    New York, NY : Wiley-Blackwell
    Proteins: Structure, Function, and Genetics 23 (1995), S. 598-603 
    Details
    ISSN: 0887-3585
    Keywords: inosine monophosphate dehydrogenase ; Tritrichomonas foetus ; crystallization ; X-ray diffraction ; purine ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Inosine-5′-monophosphate dehydrogenase (IMPDH) from the protozoan parasite Tritrichomonas foetus has been expressed in E. coli and crystallized. Crystals were grown to 0.1 mm in each dimension in 18 to 72 h using ammonium sulfate and low-molecular-weight polyethylene glycols. The crystals belong to the cubic space group P432 with unit cell edge = 157.25 Å. The enzyme is a homotetramer with each monomer having a molecular weight of 55,534 Da. There is one monomer per asymmetric unit, based on a volume/mass ratio of 2.7 Å3/Da and self-rotation analysis. The crystals are adequately stable to allow a complete data set to be collected from a single crystal. Complete native data sets have been collected to 2.3 Å resolution at 4°C using synchrotron radiation. High-quality complete data extending to 3.0 Å resolution have been collected from crystals of four putative derivatives, and the data appear to be isomorphous with that of the native crystals in each case. Efforts to solve the derivatives for use in MIR phasing are underway. © 1995 Wiley-Liss, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prot.340230417
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  • 5
    Electronic Resource
    Electronic Resource
    Trifluoroethanol/chloroalkane mixtures: Excellent novel solvents for aliphatic polyamides (1985)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 30 (1985), S. 2505-2525 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Certain mixtures of TFE/CHCl3 were found to be excellent solvents for aliphatic polyamides such as nylon-6, nylon-66, nylon-11, nylon-12, nylon-69, nylon-610, and nylon-612. Intrinsic viscosities were measured and Mark-Houwink coefficients determined for nylon-6/TFE/CHCl3, indicating TFE-rich mixtures to be better solvents than TFE alone. Similar results were obtained for TFE/CH2Cl2. Four ternary phase diagrams were constructed for nylon-6/TFE/chloroalkanes, of which the ones with CHCl3 and CH2Cl2 are the most interesting. In the nylon-6/TFE/CHCl3 diagram higher nylon-6 solubility in TFE-rich mixtures and a biphasic region in the CHCl3-rich compositions are evident. In the TFE/CH2Cl2 system, the higher dissolution of nylon-6 is observed, but no biphasic regions are detected. In certain solvent compositions and/or polymer concentrations the polymer is incompletely soluble, making the phase diagrams rather complicated. Observed thermodynamic excess properties appear to relate to the quality of TFE/chloroalkanes as solvents for nylon-6. Studies on swelling of nylon-6 networks immersed in TFE/CHCl3 show a behaviour previously described by Krigbaum and Carpenter for a general case where the formation of contracts between molecules of the two solvents is discouraged and their preferential solvation of the polymer is, therefore, encouraged. The phenomena observed in this work can be qualitatively explained as arising from antagonistic interaction of TFE molecules with chloroalkane ones. The presence of the polyamides in solution reduces such contacts, enchancing the dissolution of the polymer in the (TFE-rich) solvent mixtures.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1985.070300618
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  • 6
    Electronic Resource
    Electronic Resource
    Dynamic scaling of the cluster-size distribul nucleation: Precoalescence stages (1994)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 40 (1994), S. 11-18 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The dynamic evolution of the cluster-size distribution (CSD) in the precoalescence stages of nucleation and growth for sizes within and beyond the nucleation barrier layer (NBL) has been obtained. The existence of several universal kinetic laws of nucleation is predicted. In the precoalescence stages of nucleation, the CSD for sizes within and beyond the NBL obeys dynamic scaling relations. In a range of sizes beyond the NBL, the CSD exhibits a universal power law behavior, the exponent of which depends only on the interphase monomer transfer mechanism. Based on the results for the CSD, a general foundation is developed for nucleation kinetic measurements including the determination of the nucleation barrier and the inter-facial monomer transport rate by measuring the CSD. A preliminary comparison with an experimental study confirms the predicted dynamic scaling and the power law behavior of the CSD in the early stages of nucleation and growth.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690400104
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  • 7
    Electronic Resource
    Electronic Resource
    Near-Infrared and Visible Luminescence from Terphenyl-Based Lanthanide(III) Complexes Bearing Amido and Sulfonamido Pendant Arms (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 1923-1931 
    Details
    ISSN: 1434-193X
    Keywords: Lanthanides ; Polydentate ligands ; Luminescence spectroscopy ; Near-infrared luminescence ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---A series of m-terphenyl-based ligands bearing three coordinating oxyacetate and two amido or two sulfonamido groups, (1a-b)H3 and (2)H3, respectively, have been synthesized and characterized. The structures of the corresponding neutral complexes have been studied using 1H-NMR spectroscopy and luminescence experiments. The photophysical properties of the (1a-b)Eu, (2)Eu, (1a)Tb, and (2)Tb complexes have been studied to determine the structure of the first coordination sphere in methanol. The first coordination sphere consists of eight donor atoms provided by the ligand (three chelating oxyacetate groups and two amide or sulfonamide oxygens), and one methanol molecule. The (1a)Dy and (1a)Sm complexes exhibited sensitized luminescence in the visible spectral region, but the luminescence intensity was very sensitive to quenching by C-H groups. The near-infrared emitting (1a)Ln and (2)Ln complexes exhibited sensitized luminescence at wavelengths (at 880, 1060, and 1330 nm for Nd3+, at 980 nm for Yb3+, and at 1550 nm for Er3+) of interest for applications in optical telecommunication devices. The luminescence lifetimes of these complexes in DMSO and [D6]DMSO are in the range of microseconds. The luminescent state of the NIR emitting lanthanide ions is very efficiently quenched by high frequency oscillators (such as C-H groups) in the solvent and the ligand.Supporting information for this article is available on the WWW under //http://www.wiley-vch.de/contents/jc_2046/2000/99457_s.pdf or from the author.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Measurements of vapor sorption/desorption properties of ultrathin polymeric filmsPresented at Division of Polymer Chemistry, American Chemical Society Meeting, New Orleans, Louisiana, March 1977. (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 23 (1979), S. 1795-1802 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: After a brief review of various standard methods of diffusion measurements of vapors into and out of polymeric solids, a direct gravimetric method for studying the sorption/desorption process in thin polymer films is discussed. The apparatus used consisted of a sensitive electrical balance housed in a vacuum pump. The sorption and desorption characteristics of thick polystyrene films were studied for comparison with literature values. The system polystyrene/methylene chloride was chosen to calibrate the system because of its known data. Experiments were carried out using the polystyrenes PS-5 and Dow Trycite 1000 at 35 and 50 mm Hg. Results agreed well with those reported in the literature. The apparatus was also suitable for measuring the very initial uptake of vapor. This information is important in the study of very thin films where the amount of vapor absorbed is minimum and the initial rate of uptake is almost instantaneous.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1979.070230619
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  • 9
    Electronic Resource
    Electronic Resource
    Aufarbeitung von Single-cell-Protein  -  Senken des Nucleinsäure-Gehalts von BäckerhefeVortrag auf dem Jahrestreffen der Verfahrens-Ingenieure, 1. bis 3. Okt. 1980 in Straßburg. (1981)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 53 (1981), S. 279-279 
    Details
    ISSN: 0009-286X
    Keywords: Protein-Aufbereitung ; Nucleinsäure-Abbau ; Purin-Zersetzung ; Single-cell-Protein ; Bäckerhefe ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330530412
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  • 10
    Electronic Resource
    Electronic Resource
    Zur Technologie der Cellulosederivate (Auszug). (Vergleichende Übersicht über Herstellung, Eigenschaften und Weiterverarbeitung der Celluloseester und Celluloseäther (1933)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 46 (1933), S. 583-584 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19330463702
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