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  • 1
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 435-437 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A process for the fabrication of diamond cantilevers integrated on a silicon wafer is presented. At one end the cantilevers possess a tip with a small radius of curvature thus allowing their use in scanning probe microscopy applications. The influence of various procedures to enhance diamond nucleation of the properties of the tips is investigated. Ultrasonic pretreatment with 1 μm diamond paste and subsequent hot-filament chemical-vapor deposition turned out to yield the best results. Micro-Raman measurements show the tips to consist of stress-free diamond up to their very apex. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 3531-3533 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The reproducible micromachining of hollow metal tips on Si cantilevers and their applicability to scanning probe microscopy techniques are described. Provided with apertures below 130 nm and hollow pyramidal tips proved to be highly suited probes for scanning near-field optical microscopy (SNOM). First results of combined SFM/SNOM measurements together with scanning electron microscopy (SEM) photographs of the new sensors are presented. The SNOM images show a resolution of about 100 nm demonstrating the usefulness of these probes. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0630
    Keywords: PACS: 07.79; 07.79.L; 84.40
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1433-0407
    Keywords: Schlüsselwörter M. Parkinson ; Ökonomie ; Krankheitskosten ; Motorische Komplikationen ; Key words Parkinson’s disease ; Cost of illness ; Motor fluctuations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Parkinson’s disease (PD) causes significant expense for the national health care system due to its chronic progressive course, the duration of the disease, the high prevalence and the devastating prognosis. In Germany more than DM 320 million are spent for drugs to alleviate parkinsonian symptoms. The aim of this study was to calculate the economic burden of PD by assessing direct medical costs. Forty patients suffering from idiopathic PD were interviewed at an office of neurological specialists and at an outpatient movement disorder clinic about their use of health care resources 3 months prior to the study. The total annual costs reported were DM 14,500, consisting of DM 6500 for drug therapy and DM 8000 for other medical services, including hospital inpatient care (DM 5600), outpatient care (DM 700), medical sundries (DM 1100) and physiotherapy (DM 600). The costs were positively correlated to the extent of the disease (Hoehn and Yahr stage; HY) and the occurrence of motor fluctuations/dyskinesias.We found that both drug-therapy expenses and total medical costs doubled from HYI to HYIV. The rarely employed s.c. therapy with apomorphine additionally increased the costs of drug therapy in HYV. The occurrence of fluctuations/ dyskinesias also increased medical expenses by approximately a factor of two. Indirect burden due to increased days off of work, unemployment and earlier retirement are also significant in Parkinson’s disease. This study oncludes that a treatment which could prevent or retard disease progression as well as a treatment that delays or reduces motor complications would not only ameliorate the situation of patients suffering from PD, but would also lead to significant reductions in cost for the national health care system.
    Notes: Zusammenfassung Die Parkinson-Erkrankung verursacht beträchtliche Ausgaben für das Gesundheits- und Sozialwesen. Allein in Deutschland werden Arzneimittel mit einem Volumen von ca. DM 320 Mio. für die Behandlung der Parkinson-Erkrankung verschrieben. Ziel dieser Studie mit 40 Patienten mit der Diagnose eines M. Parkinson aus Praxen niedergelassener Neurologen und einer Spezialambulanz für Bewegungsstörungen war es, die Krankheitskosten anhand eines Patientenkolletivs zu berechnen. Die direkten medizinischen Ausgaben wurden anhand retrospektiver Daten, die mittels eines Fragebogens erhoben wurden, für 3 Monate vor Studieneinschluß berechnet. Die direkten medizinischen Kosten der Erkrankung beliefen sich insgesamt auf DM 14500 pro Jahr (DM 6500 für Medikamente, DM 8000 für Leistungen, wie Krankenhausaufenthalt (DM 5600), ärztliche Leistungen (DM 700), Hilfsmittel (DM 1100) und Krankengymnastik (DM 600)). Die medikamentösen sowie die nichtmedikamentösen Kosten zeigten eine direkte Abhängigkeit vom Krankheitsstadium nach Hoehn und Yahr (HY). Die Kosten für Medikamente verdoppelten sich vom HY-Stadium I zum Hoehn-und-Yahr-Stadium IV. Insbesondere die Therapie mit Apomorphin führte in den späten Krankheitsstadien (HY V) zu einer erheblichen Verteuerung der medikamentösen Kosten. Das Auftreten von Fluktuationen und Dyskinesien hatte ebenfalls eine deutliche Zunahme der Ausgaben zur Folge; hier war die Behandlung um den Faktor 2 teurer als bei Patienten ohne Fluktuationen. Indirekte Kosten durch Arbeitsausfall und Frühverrentung sind als weitere wichtige Kostenfaktoren beim M. Parkinson anzusehen. Der Einhalt bzw. die Verlangsamung der Progression der Erkrankung oder die Verzögerung von motorischen Komplikationen würden nicht nur eine deutliche Verbesserung für die Behandlung von Parkinson-Patienten zur Folge haben, sondern wären auch von signifikanter ökonomischer Relevanz für die Gesellschaft und das Gesundheitssystem.
    Type of Medium: Electronic Resource
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