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  • 1
    Digitale Medien
    Digitale Medien
    Effective charge distribution for attack of phenoxide ion on aryl methyl phosphate monoanion: studies related to the action of ribonuclease (1989)
    s.l. : American Chemical Society
    The @journal of organic chemistry 54 (1989), S. 5483-5486 
    Details
    ISSN: 1520-6904
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/jo00284a019
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  • 2
    Digitale Medien
    Digitale Medien
    T Wave Alternans Threshold Late After Repair of Tetralogy of Fallot (2002)
    Oxford, UK : Blackwell Science Inc
    Journal of cardiovascular electrophysiology 13 (2002), S. 0 
    Details
    ISSN: 1540-8167
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: TWA Threshold After TOF Repair. Introduction: Sustained microvolt-level T wave alternans (TWA) is a marker of increased risk for malignant ventricular arrhythmia. There is a significant risk of arrhythmia and sudden death after repair of congenital heart disease. The aim of this study was to determine the prevalence and characteristics of TWA after repair of tetralogy of Fallot (TOF). Methods and Results: TWA was evaluated during bicycle exercise in 49 subjects who had consecutively undergone transatrial-transpulmonary repair. Median values for age, age at repair, and follow-up duration were 14.9 years (11.5–20.8), 1.6 years (0.2–4.9), and 11.6 years (9.4–17.2), respectively. All patients were in New York Heart Association functional class I and were asymptomatic. Median QRS duration was 120 msec (80–150). Sustained TWA was detected in 7 (23%) of 31 subjects with adequate tests. In these 7 subjects, median onset heart rate (HR) was 120 (98–155). Median HR threshold as a percentage of predicted maximum HR (220 – age) was 58%(48–77). Sustained TWA prevalence was not significantly different compared with normal subjects (7/31 vs 9/83; P = 0.1). Onset HR in the TOF group was significantly lower [mean (SD) of 122 (20) vs 139 (12), P 〈 0.05]. In the TOF group with sustained TWA, the TWA occurred in 4 of 7 at 〈 60% predicted maximum HR versus 1 of 9 normal subjects (P 〈 0.05); 3 of 7 had onset HR 〈 120 versus 0 of 9 normal subjects (P 〈 0.03). There was no significant difference in age, gender, transannular patch use, restrictive right ventricular physiology, QRS duration, QTc, QT/QRS dispersion, or nonsustained ventricular tachycardia in subjects with or those without sustained TWA. Conclusion: The onset HR for sustained TWA is significantly lower after repair of TOF. Further study is required to determine whether this represents an increased risk for arrhythmia in this patient group.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1540-8167.2002.00657.x
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  • 3
    Digitale Medien
    Digitale Medien
    T Wave Alternans Threshold in Normal Children (2001)
    Oxford, UK : Blackwell Science Inc
    Journal of cardiovascular electrophysiology 12 (2001), S. 0 
    Details
    ISSN: 1540-8167
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: T Wave Alternans in Children. Introduction: Sustained microvolt-level T wave alternans (TWA) during exercise is a predictor of ventricular arrhythmia propensity in adult populations. TWA occurs in normal adults, but it is rare at 〈 70% of predicted maximum heart rate. An onset heart rate ≤ 110 is believed to be significant. The aim of this study was to examine the feasibility of performing the test in children and to determine the normal heart rate threshold for sustained TWA in children. Methods and Results: Alternans was evaluated during bicycle exercise in 100 normal volunteers aged 8 to 17 years. Adequate resting data were obtained in 76 of 100 children and was negative in all. Exercise data from 16 of 100 was excluded due to excessive noise. Median maximum heart rate was 192 (range 140 to 214). Sustained alternans was absent in 75 (89%) of 84. In the nine children with sustained alternans, median onset heart rate was 138 (range 120 to 158), and 7 of 9 had an onset heart rate ≤ 135. Median heart rate threshold as a percentage of predicted maximum heart rate (220 – age) was 67% (range 58% to 76%). Only 1 subject (1.2%) had an onset heart rate 〈 60% of predicted maximum. There was no significant difference between age, gender, endurance, maximum heart rate, QRS duration, QT interval, or QTc in those with and those without sustained TWA. Conclusion: Noninvasive assessment of TWA is feasible at ≤ 8 years of age. Sustained TWA was present in 11% of normal children, but was absent at heart rates below 120 and rare (1.2%) below 60% of predicted maximum heart rate.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1540-8167.2001.00424.x
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  • 4
    Digitale Medien
    Digitale Medien
    Analysis of thin CdS layers on InP for improved metal–insulator–semiconductor devices (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 2873-2882 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Cadmium sulfide (CdS) layers were deposited from an aqueous solution of thiourea, cadmium sulfate, and ammonia on (100) n-InP at 60–95 °C. X-ray photoelectron spectroscopy showed that the deposition process effectively removes native oxides on InP and forms a protective layer for subsequent dielectric deposition. Surface analysis also showed that the InP surface is not P deficient following oxide deposition on CdS-treated InP. Capacitance–voltage and conductance–voltage measurements of metal–insulator–semiconductor (MIS) capacitors were used to compare samples with and without CdS films between InP and a deposited insulator. Capacitance–voltage response of CdS-treated MIS structures showed well-defined regions of accumulation, depletion, and inversion. The interface-state density at midgap was reduced from 5×1011 to 6×1010 eV−1 cm−2 with CdS treatment. Depletion-mode MIS field-effect transistors made using this new passivation technique exhibited superior device performance to that of untreated samples.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.363139
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  • 5
    Digitale Medien
    Digitale Medien
    Experimental charge measurement at leaving oxygen in the bovine ribonuclease. A catalyzed cyclization of uridine 3'-phosphate aryl esters (1988)
    s.l. : American Chemical Society
    Biochemistry 27 (1988), S. 9042-9047 
    Details
    ISSN: 1520-4995
    Quelle: ACS Legacy Archives
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/bi00425a024
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  • 6
    Digitale Medien
    Digitale Medien
    Ability and Learning (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of philosophy of education 22 (1988), S. 0 
    Details
    ISSN: 1467-9752
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Pädagogik , Philosophie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1467-9752.1988.tb00176.x
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  • 7
    Digitale Medien
    Digitale Medien
    Learning and Belief (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of philosophy of education 20 (1986), S. 0 
    Details
    ISSN: 1467-9752
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Pädagogik , Philosophie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1467-9752.1986.tb00106.x
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  • 8
    Digitale Medien
    Digitale Medien
    Accountability and School Inspection: In Defence of Audited Self-Review (2001)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd.
    Journal of philosophy of education 35 (2001), S. 0 
    Details
    ISSN: 1467-9752
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Pädagogik , Philosophie
    Notizen: Accountability involves not only schools answering to society, but parents and governments doing the same. In particular, governments should answer for the appropriateness of the educational aims they seek to promote. Making schools accountable to society through examination results is fundamentally flawed. Teachers must be able to account for how the specifics of their job relate to wider educational and social aims. The best approach to holding schools to account through external inspection is that of ‘audited self review’. The notion of an agency of inspectors who are ‘superior’ to those they inspect is fundamentally inappropriate.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/1467-9752.00252
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  • 9
    Digitale Medien
    Digitale Medien
    3. Understanding and Holism (1998)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd.
    Journal of philosophy of education 32 (1998), S. 0 
    Details
    ISSN: 1467-9752
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Pädagogik , Philosophie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/1467-9752.00076
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  • 10
    Digitale Medien
    Digitale Medien
    1. The Need for a Philosophical Treatment of Assessment (1998)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd.
    Journal of philosophy of education 32 (1998), S. 0 
    Details
    ISSN: 1467-9752
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Pädagogik , Philosophie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/1467-9752.00074
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