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  • 1
    Electronic Resource
    Electronic Resource
    Kinetics of Ti(a3F, a5F) and V(a4F, a6D) Depletion by NH3 and H2S (1994)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 98 (1994), S. 13286-13293 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100101a030
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  • 2
    Electronic Resource
    Electronic Resource
    Structures of LuFeO3(ZnO)m (m =1, 4, 5 and 6) (1994)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 332-336 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270193008108
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  • 3
    Electronic Resource
    Electronic Resource
    Synergistic effects of benzalacetone and benzophenone on the electrocrystallization of tin from acid stannous sulphate solutions (1994)
    Springer
    Journal of applied electrochemistry 24 (1994), S. 404-410 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The synergistic effects of two kinds of aromatic ketones (benzalacetone (BA), benzophenone(BP)) and N,N-bis(polyoxyethylene)octadecylamines (POOA) on the surface morphology and the crystal orientation of electrodeposited tin from acid stannous sulphate solutions have been studied by electrochemical methods, scanning electron microscopy and X-ray diffractometry. BA itself had no effect on the reduction of tin (II) ions, but the reduction product of BA had a strong inhibitory effect on the reduction of tin (II) ions. However, the inhibitory effect of BP was stronger than that of the reduction product of BP. POOA induced a uniform deposition of tin over the whole surface, but the crystal grain size and the surface roughness of electrodeposited tin were relatively large. On the other hand, fine-grained and smooth electrodeposited tin, which had a preferred orientation with the (10 0) plane parallel to the surface, were obtained from acid stannous sulphate solutions containing POOA, BA and BP due to the synergistic effects of the three kinds of adsorbed species. It was found that BA has a levelling action and BP has a grain refinement action.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00254152
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  • 4
    Electronic Resource
    Electronic Resource
    Ultrastructural localization of P-glycoprotein on capillary endothelial cells in human gliomas (1994)
    Springer
    Virchows Archiv 425 (1994), S. 133-138 
    Details
    ISSN: 1432-2307
    Keywords: Multi-drug resistance ; P-glycoprotein Human glioma ; Endothelial cells ; Blood-brain barrier
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The P-glycoprotein (P-Gp) encoded by the human multidrug-resistance gene MDR1 has been suggested to play certain roles in the blood-brain barrier (BBB). However, the detailed mechanism of the activity of P-Gp in multidrug-resistance (MDR) remains unclear in human glioma. We examined the localization of P-Gp in human glioma by immunohistochemical (IHC) and immunoelectron microscopic (IEM) methods with anti P-Gp monoclonal antibodies (C219, MRK16). We also examined MDR1 expression in primary glioma and xenografts by reverse transcription-polymerase chain reaction (RT-PCR) with human MDR1-specific primers. The IHC study showed no P-Gp expression on tumour cells but it was present on capillary endothelial cells and IEM analysis showed definitive localization on their luminal surface. MDR1 gene expression was detected in eight primary glioma and three normal brain specimens by RT-PCR, but not in glioma xenografts. The lack of MDR1 expression in these cells appears to be a consequence of the replacement of the original human stroma, including blood vessels, by murine stroma in glioma xenografts. The unique distribution of P-Gp on the capillary blood vessels was confirmed in human glioma by the results of immunohistochemical and molecular biological studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00230349
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  • 5
    Electronic Resource
    Electronic Resource
    Isolation, growth and characteristics of human ovarian surface epithelium (1994)
    Springer
    Virchows Archiv 424 (1994), S. 59-67 
    Details
    ISSN: 1432-2307
    Keywords: Human ovary ; Ovarian surface epithelium ; Tissue culture ; Growth ; Characterization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The ovarian surface epithelium (OSE) is a key tissue in the pathogenesis of ovarian surface epithelial-stromal tumours and ovarian endometriosis, commonly encountered gynaecological diseases. Despite the high incidence of these diseases, experimental in vitro studies of OSE are few and so we used the scraping method with an enzymatic procedure to isolate human OSE and studied its characteristics in vitro. Nineteen normal ovaries were used. After incubation of the ovary for 40 min in collagenase type 1 solution (300 U/ml), the surface cells were removed by gentle scraping with a surgical blade. Cells obtained as a cluster after unit gravity sedimentation with 5% bovine serum albumin in medium 199 were cultured in medium 199 containing 15% fetal bovine serum. The viable cell number in a single ovary was 0.1−2.7×106. The outgrowth of cells started from a homogeneous population of single cells, and the cell population doubling time was between 7 and 10 days. Confluent monolayers were formed after 13–20 days and subcultured from one to three times. The monolayers mostly had a cobblestone appearance, and fusiform or polygonal cells were also observed. By cytochemistry, immunocytochemistry and scanning and transmission electron microscopy, the cells were shown to have characteristics of mesothelial OSE cells in short-term culture. This experimental approach was efficient in providing cultured human OSE, which can be utilized to investigate pathobiology and carcinogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00197394
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  • 6
    Electronic Resource
    Electronic Resource
    Intra-operative radiation therapy for malignant brain tumours: Rationale, method, and treatment results of cerebral glioblastomas (1994)
    Springer
    Acta neurochirurgica 131 (1994), S. 80-90 
    Details
    ISSN: 0942-0940
    Keywords: Intra-operative radiation therapy ; glioblastoma ; metastatic brain tumour ; radiation therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In radiation therapy for malignant brain tumours, the dose of radiation that can be safely delivered to a tumour is limited by the radiation tolerance of the adjacent normal brain tissue. Among various radiation modalities to produce local tumour eradication without unacceptable complications, we chose a large, single irradiation dose during the operation (intra-operative radiation therapy, IORT). In contrast to X-ray or Cobalt-60 gamma ray irradiation, IORT with a high-energy electron beam delivered by the Shimadzu 20 MeV betatron provides acceptable dose homogeneity with rapid fall-off of the radiation dose beyond the treatment volume. Thus, IORT has the advantage of precise demarcation of the target volume, minimum damage to surrounding normal tissues, and a high absorbed target dose (15–25 Gy in 5–10 min). On the basis of our experience with 170 patients treated by IORT, we established the treatment indications and method in patients with malignant brain tumours. IORT with a dose of 15–25 Gy was delivered to widely resected tumours followed by external radiation therapy. No acute or subacute complications were observed. Treatment results of 30 patients with glioblastoma treated by IORT (mean 18.3 Gy) combined with external radiation therapy (mean 58.5 Gy) resulted in a median survival of 119 weeks and a 2-year survival rate of 61%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401457
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  • 7
    Electronic Resource
    Electronic Resource
    Isolation and culture of protoplasts from young sporophytes ofSalvinia natans aseptically obtained by co-culture of female and male gametophytes (1994)
    Springer
    Plant cell, tissue and organ culture 36 (1994), S. 237-242 
    Details
    ISSN: 1573-5044
    Keywords: aseptic culture ; female gametophyte ; heterospory ; male gametophyte ; protoplasts ; Salvinia natans
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Sporophytes were aseptically obtained by co-culture of female and male gametophytes derived from two types of spores (megaspores and microspores) of the heterosporous fernSalvinia natans All. Protoplasts isolated enzymatically from juvenile leaflets of sporophytes were cultured in a 1/10 Murashige and Skoog's medium containing 2.2 μM naphthalene acetic acid, 2.2 μM 6-benzyl-aminopurine, 0.35 M mannitol, and 0.05 M sucrose. Cell division took place within 6 days of culture, and cell-clusters composed of 9–10 cells were observed after 30 days of culture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00037725
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  • 8
    Electronic Resource
    Electronic Resource
    Time-space method for multidimensional melting and freezing problems (1994)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 37 (1994), S. 1793-1805 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: In this paper, the time-space method (TSM) for multidimensional melting and solidification problems is proposed. In the proposed TSM, the timewise co-ordinate is incorporated into one of the spatial co-ordinates, thereby transforming the usual transient 2-D (or 3-D) problems into steady 3D (or 4-D) boundary-value problems.Since time integration is not necessary, the TSM has a feature that eliminates the so-called numerical instability which has been a great concern in the principal numerical methodologies in the past. That is, no error propagation in the timewise direction occurs in the TSM calculation.The TSM is applicable to almost all transient heat transfer and flow problems. The computer running time will be reduced to only 1/100th-1/1000th of the existing schemes for 2-D or 3-D problems. The sample calculations are presented for a 2-D melting problem in a square cavity and the validity of the present method is examined.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620371102
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