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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 212-216 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin silicon carbide films have been deposited by chemical vapor deposition on p-type (100) silicon substrates. The composition and bonds formed in these films have been analyzed by x-ray photoelectron spectroscopy (XPS) and infrared spectroscopy. The native surface oxide on the silicon carbide surface induced by air exposure has also been studied. Several phases are detected in the near-surface region: elemental Si, Si oxides (mainly SiO2), Si carbide (SiC) and Si oxicarbides (SiOxCy). Quantitative XPS analysis results indicate that, for atomic oxygen fractions 〈0.15, the Si–C phases are dominant in the films. Above this value no silicon oxicarbide is observed, but a multiphase material formed by elemental Si, Si oxides and Si carbides is observed. In spite of the film being a complex phase mixture, a simple relationship is found between the overall carbon and oxygen compositions. The carbon atomic fraction in the film decreases quasilinearly as the oxygen content increases, with a slope of about −1. An overall composition of SiOxC3−x in the 0.5〈x〈2 range is found for the phase mixture. A comparison with silicon carbide obtained by CHn+ ion implantation into monocrystalline silicon is made. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the European Academy of Dermatology and Venereology 3 (1994), S. 0 
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We report the case of a 5-year-old child who from birth had five erythemato-desquamative papulous lesions with a verrucose surface and linear distribution in the proximal region of the lower left leg not following the lines of Blashko. The morphological aspect and the evolution of the lesions, data from physical exploration of the skin and adnexa, the characteristics of the histopathology and its association with HLA Cw6 led us to diagnose congenital linear psoriasis. Differential diagnosis was established basically with ILVEN since distinction between the two entities is now traditional. We took into consideration the fact that linear psoriasis is a particular entity and can occur congenially, as in the case reported; although this is an exceptional occurrence.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 374-378 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A laboratory x-ray spectrometer designed for routine analysis in the 15–60-keV spectral range is described. It consists of a 40-cm bent-crystal transmission spectrometer in the Cauchois geometry, controlled by a microcomputer. The choice of the crystal analyzer and of the detection system is discussed. The instrument is well suited for large spectral range x-ray absorption and emission spectroscopy (XAS, XES) and x-ray source diagnostics.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1365-4632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Patients and Methods This parallel-group, double-blind trial compared the efficacy and tolerability of topical prednicarbate, 0.25% ointment, with that of fluocortin butyl ester, 0.75% ointment.The trial included 79 outpatients at three participating centers. All patients had a diagnosis of atopic dermatitis on the basis of Hanifin and Rajka's criteria.1 Other inclusion criteria were: age ≥ 18 years and stability or worsening of the condition for at least 1 week in the current episode. Patients were required to have been treatment-free for minimum periods of: 7 days if previously treated with other topical corticosteroids; 1 month if previously treated with systemic corticosteroids; 3 days if previously treated with shortacting antihistamines; 2 months if previously treated with astemizole.Exclusion criteria were: severe incapacitating dermatitis; infectious processes or association with other skin changes; need for the concomitant administration of antihistamines or antimicrobials; serious concurrent illness. Women not using adequate contraception were also excluded.A thin layer of topical prednicarbate (N = 42) or fluocortin butyl ester (N = 37) was applied to the affected area of skin twice daily, without occlusion. The duration of treatment was set at 21 days, but it could be interrupted earlier, at the discretion of the investigator, on the grounds of total disappearance of the condition, inefficacy, or the appearance of any adverse reaction. A daily application of an emollient oil and/or a cleaning or emollient aqueous cream could be used at the investigator's discretion.At the start of treatment and at 4, 7, 14, and 21 days, each of the following features was rated on a scale of 0 to 3 (0; absent, 1: mild, 2: moderate, 3: severe): pruritus; excoriations; erythema; scaling; lichenification; vesiculation; hyper-keratosis. On the basis of these scores, the overall efficacy of treatment was rated as: improvement 〉 improvement of 〉 50 to 75%; improvement of 〉 25 to 50%; improvement 〈 25%; no improvement; worsening.If the treatment ended before 21 days, owing to either cure or inefficacy, the score for the last evaluation was used for all subsequent followup points. At the end of treatment the investigator and the patient rated treatment as excellent, good, fair, or poor. Cosmetic acceptance by the patient was evaluated in the same terms.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental dermatology 22 (1997), S. 0 
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 39 (1990), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A viroid was detected in Chrysanthemum plants showing symptotns of stunting in a commercial field in Brazil. Analysis by return polyacrylamide gel electrophoresis (R-PAGE) of the nucleic acid preparations of leaves and flowers revealed the presence of a nucleic acid of low molecular weight with mobility within the range of viroids. The viroid-like band was completely eliminated by ribonuclease treatment or alkaline hydrolysis. The Chrysanthemum viroid was readily transmissible to Chrysathemum, tomnato and Gynura, which suggests that it may be an isolate of chrysanthemum stunt viroid.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental dermatology 20 (1995), S. 0 
    ISSN: 1365-2230
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Comparative Biochemistry and Physiology -- Part B: Biochemistry and 87 (1987), S. 489-495 
    ISSN: 0305-0491
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Behavioral and Neural Biology 44 (1985), S. 393-402 
    ISSN: 0163-1047
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Psychology
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0942-0940
    Keywords: Intraoperative BAEP recording ; brainstem disfunction ; posterior fossa surgery ; acoustic neuroma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Nine patients with unilateral ponto-cerebellar tumour, one with epidermoid, eight with acoustic neuroma had intraoperative monitoring of the brainstem auditory evoked potentials (BAEP) using bilateral scalp recording (Cz-A1 and Cz-A2) and binaural stimulation in order to monitor brainstem function during the surgery. Results were correlated with preoperative and postoperative BAEP findings. There was some intraoperative BAEP change in all the patients.Halothane anaesthesia caused bilateral wave V. prolongation in six patients.Lumbar drainage produced ipsilateral or bilateral wave V. prolongation in three of four patients in whom lumbar drainage was established.Opening the dura produced ipsilateral or bilateral wave V. depression or bilateral prolongation in four patients.Tumour dissection caused BAEP changes in all the patients: bilateral prolongation or depression in five patients, and ipsilateral prolongation and/or depression in six patients, three of them together with bilateral changes. The only patient who had no changes in wave I–IV. but in whom a big wave VI. appeared at the tumour side during removal, had epidermoid tumour.At the end of surgery there was some improvement in all patients, but in two the improvement was not striking: in one BAEP remained flat ipsilaterally, and in other, latency did not improve. All the patients had a good clinical recovery a few days later, but the control BAEP performed from the 3rd–7th postoperative day was not yet completely recovered in four patients. Intraoperative BAEP monitoring can be a useful technique to monitor brainstem function. It seems to us that the sensitivity of the method is perhaps unduly high for routine clinical purposes, the potentials being easily disturbed by relatively insignificant brainstem manipulation. However, it is clear that BAEP constitute a most sophisticated early warning system in posterior fossa surgery, and their use will clearly continue on a research basis.
    Type of Medium: Electronic Resource
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