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  • 1
    Electronic Resource
    Electronic Resource
    Combined interface plasmon polariton and x-ray reflectivity determination of the dielectric tensor in ultrathin liquid crystal films (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 3323-3329 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have carried out interface plasmon polariton (IPP) and specular x-ray reflectivity studies of the same multilayer structure containing a thin metallic silver film and a thin (100–600 A(ring)) smectic C* ferroelectric liquid crystal (FLC) film on a glass substrate. An additional thin nylon layer sandwiched between these two films is essential to improve the smectic FLC alignment and its stability. The specular x-ray reflectivity after each stage of layer deposition provides information on the thickness and the electron density of the individual layer. Particularly, this technique allows for the determination of the amplitude and the phase of the electronic density modulation (i.e., the smectic order parameter) of the FLC film. We demonstrate that the x-ray results are essential for the determination of the complex dielectric functions of the FLC film from the shape and the angular position of the IPP resonance. Generally, we have found that for samples with a relatively large smectic order parameter the IPP resonance can be best fitted assuming an anisotropic dielectric tensor and the presence of domains in the FLC film. For well ordered smectic C* films at room temperature, the anisotropy of the dielectric tensor is slightly higher compared to the bulk value and shows a tendency to increase with the decrease of the film thickness in ultrathin films. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.360025
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  • 2
    Electronic Resource
    Electronic Resource
    Energy Efficiency Policy and Market Failures (1995)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Environment and Resources 20 (1995), S. 535-555 
    Details
    ISSN: 1056-3466
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.eg.20.110195.002535
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  • 3
    Electronic Resource
    Electronic Resource
    Anaesthesia for insertion of ear tubes in children: comparison of propofol, thiopentone and halothane (1997)
    Oxford, UK : Blackwell Science Ltd
    Pediatric anesthesia 7 (1997), S. 0 
    Details
    ISSN: 1460-9592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: To determine the quality of anaesthesia and speed of recovery after propofol anaesthesia for myringotomy in children, 100 children 2–12 years were randomized to one of four anaesthetic regimens for induction/maintenance: thiopentone (STP) (5 mg·kg−1)/halothane, propofol (3 mg·kg−1)/halothane, halothane/halothane or propofol (3 mg·kg−1)/propofol bolus (0.5 mg·kg−1 every 3 min (10 mg·kg−1·h−1)). Nitrous oxide (70%) in oxygen (30%) was used to facilitate insertion of an intravenous catheter and was continued throughout the anaesthetic. We found that the incidence of intraoperative movement in response to surgical stimulation was significantly greater in the prop/prop group 32%, compared with the three other groups (P〈0.02). Although some recovery variables (time to response to questions, sit unaided, tolerate oral fluids, and discharge with fluids) were achieved more rapidly by the prop/prop group than the other three groups, the times to open eyes, obey commands and, most importantly, discharge from recovery without fluids did not differ between the prop/prop and the hal/hal groups. We conclude that there is little benefit in using propofol as an induction agent alone or in combination with a propofol maintenance anaesthetic for paediatric myringotomy and tube surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-9592.1997.d01-36.x
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  • 4
    Electronic Resource
    Electronic Resource
    Preliminary X-ray crystallographic analysis of human salivary cystatin (1996)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 869-870 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Human salivary cystatin, a thiol proteinase inhibitor, has been implicated in potential antimicrobial and antiviral functions of saliva. A variant of human salivary cystatin SN expressed and purified in an Escherichia coli expression system lacking residues 12–16 near the N-terminus (Δ12–16) has been crystallized by the vapor-diffusion technique. The crystals are of the hexagonal space group P622 and have cell constants of a = 85.41, b = 85.41, c = 131.6 Å, α = β = 90, γ = 120°, and contain two molecules of molecular weight 13 500 per asymmetric unit. The crystals diffract up to a resolution of 2.2 Å and are suitable for X-ray diffraction analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S090744499600323X
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  • 5
    Electronic Resource
    Electronic Resource
    Structure of Human Salivary α-Amylase at 1.6 Å Resolution: Implications for its Role in the Oral Cavity (1996)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 435-446 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Salivary α-amylase, a major component of human saliva, plays a role in the initial digestion of starch and may be involved in the colonization of bacteria involved in early dental plaque formation. The three-dimensional atomic structure of salivary amylase has been determined to understand the structure-function relationships of this enzyme. This structure was refined to an R value of 18.4% with 496 amino-acid residues, one calcium ion, one chloride ion and 170 water molecules. Salivary amylase folds into a multidomain structure consisting of three domains, A, B and C. Domain A has a (β/α)8− barrel structure, domain B has no definite topology and domain C has a Greek-key barrel structure. The Ca2+ ion is bound to Asnl00, Arg158, Asp167, His201 and three water molecules. The Cl− ion is bound to Arg195, Asn298 and Arg337 and one water molecule. The highly mobile glycine-rich loop 304–310 may act as a gateway for substrate binding and be involved in a `trap-release' mechanism in the hydrolysis of substrates. Strategic placement of calcium and chloride ions, as well as histidine and tryptophan residues may play a role in differentiating between the glycone and aglycone ends of the polysaccharide substrates. Salivary amylase also possesses a suitable site for binding to enamel surfaces and provides potential sites for the binding of bacterial adhesins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444995014119
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  • 6
    Electronic Resource
    Electronic Resource
    Surgical outcome in acquired immunodeficiency syndrome patients with non-hodgkin's lymphoma of the gastrointestinal tract (1996)
    Springer
    Diseases of the colon & rectum 39 (1996), S. 251-251 
    Details
    ISSN: 1530-0358
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02049460
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  • 7
    Electronic Resource
    Electronic Resource
    Metastatic thyroid carcinoma presenting as an expansile intraluminal esophageal mass (1995)
    Springer
    Abdominal imaging 20 (1995), S. 20-22 
    Details
    ISSN: 1432-0509
    Keywords: Esophagus neoplasms ; Esophagus metastasis from thyroid carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a patient with metastatic thyroid carcinoma invading the esophagus in whom barium and MR examinations revealed an expansile intraluminal mass indistinguishable from that of a primary esophageal malignancy. Metastatic thyroid carcinoma should therefore be included in the differential diagnosis of an expansile esophageal mass. As in our patient, MR imaging may be useful for showing that the mass originates in the thyroid gland.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00199636
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  • 8
    Electronic Resource
    Electronic Resource
    Splenic implant in the jejunum: Radiographic and pathologic findings (1995)
    Springer
    Abdominal imaging 20 (1995), S. 518-520 
    Details
    ISSN: 1432-0509
    Keywords: Splenosis ; Jejunum, neoplasms ; Post-splenectomy complications
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a patient in whom barium studies and computed tomography revealed an intramural mass in the jejunum that consisted pathologically of ectopic splenic tissue. Because the patient had a prior splenectomy, the lesion probably represented splenosis rather than an accessory spleen. When intramural lesions are detected on barium studies in patients who have had prior abdominal trauma or splenectomy,99mTc-tagged, heated-red blood cell scintigraphy may be performed to confirm the diagnosis, thereby eliminating the need for surgery in these patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01256702
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  • 9
    Electronic Resource
    Electronic Resource
    Barrett's esophagus and esophageal adenocarcinoma: the scope of the problem (1995)
    Springer
    Abdominal imaging 20 (1995), S. 291-298 
    Details
    ISSN: 1432-0509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Conclusion Barrett's esophagus is probably a more common condition than previously recognized. Although the classic radiologic findings of Barrett's esophagus are present in only a small percentage of patients, this condition should be suspected whenever reflux esophagitis or peptic strictures are demonstrated on double-contrast esophagography. Recent literature also suggests that Barrett's carcinomas comprise up to 50% of all esophageal cancers. Because of the increased risk of developing adenocarcinoma in Barrett's esophagus, endoscopic surveillance has been advocated to detect dysplastic or carcinomatous changes at the earliest possible stage. When barium studies are performed on patients with known Barrett's esophagus, the radiographs should be carefully evaluated for signs of early adenocarcinoma, so these patients can be referred for appropriate management prior to the development of advanced, unresectable tumors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00203356
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  • 10
    Electronic Resource
    Electronic Resource
    Drug-induced disorders of the esophagus (1999)
    Springer
    Abdominal imaging 24 (1999), S. 3-8 
    Details
    ISSN: 1432-0509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002619900431
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