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  • 1
    Electronic Resource
    Electronic Resource
    Determination of oxidation states of uranium dioxide pellets by two-step flow-coulometry (1980)
    s.l. : American Chemical Society
    Analytical chemistry 52 (1980), S. 1601-1606 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac50061a016
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  • 2
    Electronic Resource
    Electronic Resource
    Sweat duct milia – immunohistological analysis of structure and three-dimensional reconstruction (1996)
    Springer
    Archives of dermatological research 288 (1996), S. 133-139 
    Details
    ISSN: 1432-069X
    Keywords: Key words Sweat duct milia ; Carcinoembryonic ; antigen ; Cancer antigen 50 ; Cytokeratin 19 ; Three-dimensional reconstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The fine structure of sweat duct milia and the pathomechanism in their aetiology are still unknown. To examine the relationship and connection of milia to the sweat ducts as well as to the overlying epidermis, nine sweat duct milia, six incomplete and three complete, were studied by three-dimensional reconstruction (3DR) analysis based on photomicrographs obtained after histological and immunohistochemical staining with antibodies against carcinoembryonic antigen (CEA), cancer antigen (CA 50) and human cytokeratin 19 (CK 19). In both incomplete and complete milia, an eccrine duct expressing the antigens penetrated into the cyst wall at the centre of its base, formed a circular path within the wall, and opened into the inner cavity. The eccrine duct was mature in eight milia and immature in one. In the cyst wall, CA 50 and CK 19 were detected throughout the entire cyst except for the most apical portion of incomplete milia, where the cyst wall fused with the overlying epidermis which did not express any of the antigens. CEA was distributed mainly in the basal half of the milia. The finding that the path of the eccrine duct within the cyst wall is circular conflicts with the currently accepted concept of simple penetration of the eccrine duct into the wall, suggesting an acrosyringeal origin of the milia. An incomplete milium is the result of fusion between cells derived from an eccrine duct and those derived from the surrounding epidermis, while the formation of a complete milium does not involve this fusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004030050035
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  • 3
    Electronic Resource
    Electronic Resource
    Photon-stimulated ion desorption from molybdenum oxides following Mo 2p3/2 excitation (2001)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 8 (2001), S. 469-471 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Photon-stimulated ion desorption from solid MoO3 following the Mo 2p3/2 resonant transition has been investigated. In the XANES spectrum, Mo 2p3/2 peak is split into two components corresponding to the excitations from Mo 2p3/2 into the t2g and eg orbitals. It was observed that the desorption yield of O+ ions at the Mo 2p3/2 ⇒ eg resonance is higher than that at the Mo 2p3/2 ⇒ t2g resonance. The Auger decay spectra reveal that there exist two kinds of spectator Auger decays. The high desorption yield at the 2p3/2 ⇒ eg resonance is interpreted by the fast breaking of the Mo-O bond due to the localization of the electrons in the highly antibonding eg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049500017209
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  • 4
    Electronic Resource
    Electronic Resource
    Hepatocellular carcinoma with or without cirrhosis: A comparison of CT and angiographic presentations in the United States and Japan (1993)
    Springer
    Abdominal imaging 18 (1993), S. 168-175 
    Details
    ISSN: 1432-0509
    Keywords: Liver neoplasms, hepatoma ; Liver, cirrhosis ; Liver, CT ; Liver, angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We compared the computed tomographic (CT) and angiographic presentations of hepatocellular carcinoma (HCC) with or without cirrhosis in the United States and Japan. Tumors in the United States were advanced and less frequently associated with liver cirrhosis (association of cirrhosis: United States) 56.2%, Japan 91.0%. In patients with cirrhosis, the size of the tumor tended to be smaller, and nodular tumors (single or multiple) were frequent. In early stage of HCCs with cirrhosis, tumors were hypovascular without a capsule. In advanced stage, tumors were hypervascular and a capsule was frequently observed around the tumor both with CT and angiography. HCCs without cirrhosis were seen in younger patients. These tumors were large at the time of diagnosis. A massive or diffuse mass without a capsule was frequently seen. Most tumors were hypodense on precontrast CT and hypervascular on angiography. Lymph node enlargement was significantly frequent. The radiological characteristics of HCC in both countries were significantly different depending upon associated cirrhosis, as well as the time of the diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00198057
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  • 5
    Electronic Resource
    Electronic Resource
    Stages III and IV Squamous Cell Carcinoma of the Mouth: Three-Year Experience with Superselective Intraarterial Chemotherapy Using Cisplatin Prior to Definitive Treatment (1999)
    Springer
    CardioVascular & interventional radiology 22 (1999), S. 201-205 
    Details
    ISSN: 1432-086X
    Keywords: Key words: Head and neck neoplasm, therapy—Chemotherapeutic infusion—Intraarterial chemotherapy—Oral cancer—Squamous cell carcinoma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: This study was designed to assess the 3-year experience with superselective intraarterial chemotherapy prior to definitive treatment for stages III and IV squamous cell carcinomas of the mouth. Methods: Twenty-two patients prospectively received superselective intraarterial chemotherapy using relatively low-dose cisplatin via a transfemoral approach. The locations of the tumors were the tongue (n= 12), gingiva (n= 5), buccal mucosa (n= 2), hard palate (n= 1), floor of the mouth (n= 1), and lip (n= 1). After intraarterial chemotherapy, 21 patients underwent surgery (n= 14), radiation therapy (n= 6), or both (n= 1). The survival rate of 25 patients who underwent surgery with/without radiation therapy until 1992 at Kumamoto University Hospital was also evaluated as a historical control. The survival curve was calculated with the Kaplan-Meier method, and the statistical difference between survival curves was determined with the generalized Wilcoxon test. Results: The overall response rate was 95% [complete response (tumor completely resolved), 24%; partial response (tumor reduction ≥50%), 71%]. Fifty-two intraarterial infusions were performed without any catheter-related complications. Mild and transient local toxicity such as edema or mucositis of the infused area was relatively common. One patient died of renal failure from cisplatin. After a median follow-up of 20 months (range 2–41 months), the estimated 3-year survival rate for patients who underwent intraarterial chemotherapy plus surgery was 91%. The survival of the patients who underwent intraarterial chemotherapy plus surgery tended to be longer than that of the historical control. Conclusions: Early tumor reduction without delay of subsequent treatments can be obtained by intraarterial chemotherapy while minimizing complications and possibly improving survival. Further investigations of long-term survival with larger series need to be performed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002709900366
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  • 6
    Electronic Resource
    Electronic Resource
    Application of X-ray-induced Auger electron spectroscopy to state analyses of hydrogen implanted in Y, Zr and Nb metals (1984)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 6 (1984), S. 171-173 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: X-ray-induced Auger electron spectroscopy (XAES) was used to examine the surface chemical states of hydrogen implanted metals. The chemical shifts of the M4,5N2,3V Auger peaks from their metallic states were 1.0 eV, 3.3 eV and 2.2 eV, respectively, for ion-implanted Y, Zr and Nb. The separation energies were found to be much larger than those of the corresponding 3d5/2 lines in the XPS spectra.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740060405
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  • 7
    Electronic Resource
    Electronic Resource
    Electronic structures of N2+ and O2+ ion-implanted Si(100) (1995)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 23 (1995), S. 381-385 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Electronic structures of N2+ and O2+ ion-implanted Si(100) (SiNx, SiOx) have been investigated by means of x-ray photoelectron spectroscopy (XPS), x-ray-induced Auger electron spectroscopy (XAES) and x-ray absorption near-edge structures (XANES). For the O2+ ion irradiation, the binding energies of Si 2p and SiKLL Auger lines for SiOx at x 〉 0.4 show that SiO2 is predominantly produced. The XANES spectra of SiOx (x 〉 0.2) at the Si 2p edge are similar to those of bulk SiO2. However, other oxides such as SiO are scarcely observed in these spectra. These observations indicate that the SiOx layer consists of a mixture of Si and SiO2 islands. On the other hand, chemical shift of the Si 2p and SiKLL Auger lines for SiNx becomes larger gradually with the implantation. Thus, it is considered that such changes are due to the stepwise replacement of the Si—Si bond with the Si—N bond. It implies that SiNx has several chemical states of nitride.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740230607
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  • 8
    Electronic Resource
    Electronic Resource
    Photoelectron spectroscopic and surface resistance measurements of TiO2 and V2O5 after rare-gas sputtering (1993)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 20 (1993), S. 682-686 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Insulating to semiconducting transformation was observed for surface layers of the transition metal oxides exposed to 1.5-15 keV He+, Ar+ and Xe+ ions. The surface electrical conductivity increased with the fluence of the ion beams and reached ∼10Ω-1 cm-1 at a fluence of 1 × 1017 Ar+ cm-2. Core-line splittings in the metal 2p region and preferential losses of the surface oxygen observed in the x-ray photoelectron spectra give evidence of the formation of the reduced chemical species Ti(II), Ti(III) and V(III). The ion bombardment also brought about the appearance of a new peak near the Fermi level in the UV photoelectron spectra. These observations suggest that electrons in the O 2p orbital are transferred to the 3d-derived non-bonding level by the losses of atomic oxygen and thus behave as charge carriers, which causes an increase in electrical conductivity.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740200812
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