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  • 2000-2004  (45)
  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of MIBK from Acetone in a Single Step over Ni/AIPON Catalysts (2000)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 325-326 (Jan. 2000), p. 83-90 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/04/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.325-326.83.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of meloxicam on oxygen radical generation in rat gastric mucosa (2000)
    Springer
    Inflammation research 49 (2000), S. 361-366 
    Details
    ISSN: 1420-908X
    Keywords: Key words: Non-steroidal anti-inflammatory drugs (NSAIDs) – Meloxicam – COX-2 inhibitors – Gastric injury – Oxygen radical
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Aim and Design: In addition to a deficiency of endogenous prostaglandins due to inhibition of cyclo-oxygenase and a host of prostaglandin-mediated effects on mucosal protection, it has recently been proposed that neutrophil- and oxygen radical - dependent microvascular injuries may be important prime events that lead to mucosal injury induced by non-steroidal anti-inflammatory drugs. Therefore, we evaluated the role of oxygen free radicals in the pathogenesis of acute gastric ulceration induced by meloxicam, a preferential COX-2 inhibitor.¶Material: Studies were performed in Wistar rats.¶Treatment: Meloxicam was given by oral administration (3.75-30 mg/kg body weight).¶Methods: Determinations were made of gastric mucosal injury, xanthine-oxidase, myeloperoxidase and superoxide dismutase activities, as well as the effect of meloxicam on gastric prostaglandin synthesis (PGE2 levels) and glutathione homeostasis.¶Results: Oral administration of meloxicam dose-dependently (3.75-30 mg/kg) caused acute gastric haemorrhage erosions. The total area of gastric lesions increased with time until 24 hours after dosing. Xanthine-oxidase activity increased significantly after administration of the drug. Myeloperoxidase activity, as an index of neutrophil infiltration, as well as glutathione peroxidase, an important enzyme that scavenges lipid peroxides, were unaffected by meloxicam administration. In addition, superoxide dismutase activity, PGE2 and glutathione levels were significantly reduced.¶Conclusion: These results support the hypothesis that in addition to suppresion of prostaglandin synthesis, oxygen free radicals, probably derived via the action of xanthine oxidase, the decrease in superoxide dismutase activity, and the depletion of mucosal glutathione contribute to the pathogenesis of meloxicam-induced ulceration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00000217
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  • 3
    Electronic Resource
    Electronic Resource
    Erosion Control at Construction Sites: The Science–Policy Gap (2000)
    Springer
    Environmental management 26 (2000), S. 89-97 
    Details
    ISSN: 1432-1009
    Keywords: KEY WORDS: Urban erosion control; Best management practices; Construction sites; Erosion control framework; Science-policy gap
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002670010073
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  • 4
    Electronic Resource
    Electronic Resource
    A theoretical study of liquid alcohols using averaged solvent electrostatic potentials obtained from molecular dynamics simulations: Methanol, ethanol and propanol (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 1613-1620 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We applied a quantum mechanics/molecular mechanics method that makes use of the mean field approximation to study the polarization of several alcohols in the liquid phase. The method is based on the calculation of the averaged solvent electrostatic potential from molecular dynamics data. Because of the reduced number of quantum calculations that our approximation involves, it permits the use of flexible basis sets, the consideration of the electron correlation and the solvent and solute polarization. We found that the molecules studied undergo strong polarization when they pass from the gas to the liquid phase. From this point of view, the polarization methanol displays a behavior lightly different from ethanol and propanol. The vaporization energies are very well reproduced especially when the correlation energy is included. The differences with the experimental values are less than 3% in the three systems studied. Finally, we consider the effect on the thermodynamics and the structure of the solution of the choice of the Lennard-Jones parameters. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1430253
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  • 5
    Electronic Resource
    Electronic Resource
    A multiconfiguration self-consistent field/molecular dynamics study of the (n→π*)1 transition of carbonyl compounds in liquid water (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 6308-6315 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A model is presented for the electrostatic component of solvatochromic shifts in vertical electronic excitation energies. The model, which makes use of the mean-field approximation, combines quantum mechanics (QM) in the description of the solute molecule and molecular mechanics (MM) in the description of the solvent. The method is implemented at the multiconfigurational self-consistent field level. We present illustrative applications to the (n→π*)1 transitions of formaldehyde, acetaldehyde, and acetone in liquid water. The solvent shifts obtained compare well with other ab initio QM/MM calculations and when the electron correlation components are included with the experimental solvent shift, but differ from the results obtained with semiempirical QM/MM and continuum models. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1308283
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  • 6
    Electronic Resource
    Electronic Resource
    7th National Congress of Dermatology and Venereology with international participation (2000)
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 14 (2000), S. 0 
    Details
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1468-3083.2000.00138.x
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  • 7
    Electronic Resource
    Electronic Resource
    Enhancing Current Treatments for Anxiety Disorders (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical psychology 9 (2002), S. 0 
    Details
    ISSN: 1468-2850
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1093/clipsy.9.1.91
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  • 8
    Electronic Resource
    Electronic Resource
    Antisepsis for abdominal hysterectomy: a randomised controlled trial of povidone–iodine gel (2004)
    Oxford, UK and Malden, USA : Blackwell Science Ltd
    BJOG 111 (2004), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective  To assess whether infectious morbidity after total abdominal hysterectomy is decreased by the addition of 20 cc povidone–iodine gel at the vaginal apex after the usual vaginal preparation with povidone–iodine solution.Study design  Randomised controlled trial.Setting  Fifteen secondary and tertiary hospitals in Canada.Sample  A total of 1570 women undergoing planned total abdominal hysterectomy.Methods  Computer-generated randomisation using a centralised telephone service was stratified by study centre with variable block size. In the operating room, a swab for bacterial vaginosis was taken before vaginal antisepsis. Study group remained concealed until the standard surgical preparation in the operating room was complete. Then povidone-iodine gel 20 cc was placed at the vaginal apex in the intervention group only. Participants were followed for one month post-operative.Main outcome measures  The primary outcome was post-operative infectious morbidity during the 30 days after surgery, defined as: febrile morbidity with hospital stay greater than five days or antibiotic treatment, or infection requiring readmission to hospital or additional visit. Other outcomes included abdominal wound infection, pelvic abscess and other pelvic infections.Results  Post-operative infectious morbidity within 30 days occurred in 128/780 (16%) women receiving povidone–iodine gel preparation and 142/790 (18%) women not receiving gel (RR 0.9, 95% CI 0.7 to 1.1). Pelvic abscess was diagnosed in 0 patients in the gel group and in seven patients in the control group (P 〈 0.01). No significant difference was found in pelvic cellulitis (eight in each group) or abdominal wound infection (51 in the gel group and 58 in the control group, P= 0.5).Conclusion  Povidone–iodine vaginal gel antisepsis led to a 9% relative decrease in overall infectious morbidity after abdominal hysterectomy, which was not statistically significant. Povidone–iodine vaginal gel decreased the risk of pelvic abscess after total abdominal hysterectomy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.2004.00170.x
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  • 9
    Electronic Resource
    Electronic Resource
    Estrogenic Activity and Volume Fraction of Waste Water Origin in Monitoring Wells Along the Santa Cruz River, Arizona (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water monitoring & remediation 24 (2004), S. 0 
    Details
    ISSN: 1745-6592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: The fate of estrogenic activity in waste water effluent was examined during surface transport and incidental recharge along the Santa Cruz River in Pima County, Arizona. Based on measurement of boron isotopes, the fractional contribution of reclaimed water in surface waters and ground water wells proximate to the river was determined for a contemporary sample set. Estrogenic activity decreased by −60% over the 25 mi length of the river below effluent discharge points in Tucson. In ground water samples obtained from monitoring wells that are proximate to the Santa Cruz River, both dissolved organic carbon (p= 0.0003) and estrogenic activity (p= 3 × 10−6) were highly correlated to fractional waste water content. Results indicate that proximate ground water quality is sensitive to incidental recharge of reclaimed water in the Santa Cruz River bed. In a few locations, little attenuation of estrogenic activity was apparent during percolation of effluent in the river channel to well withdrawal points.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6592.2004.tb00716.x
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  • 10
    Electronic Resource
    Electronic Resource
    POTENTIAL USE OF 18 TESLA STATIC AND PULSED MAGNETIC FIELDS ON ESCHERICHIA COLI AND SACCHAROMYCES CEREVISIAE (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food processing and preservation 25 (2001), S. 0 
    Details
    ISSN: 1745-4549
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Escherichia coli and Saccharomyces cerevisiae were subjected to 18T static and pulsed magnetic fields at different temperatures in either phosphate buffer, McIlvaine buffer, or peptonated water. Colony forming units were recorded after incubation in nutrient and Violet Red Bile agar for E. coli and potato dextrose agar for S. cerevisiae. No inactivation or cell injury was detected due to the influence of the magnetic field whether static or pulsed. As expected, at higher temperatures both inactivation and cell injury were increased. Although further research is needed, magnetic field technology at 18T or lower does not appear as a feasible option for processing foods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4549.2001.tb00456.x
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