193 research outputs found
Reikningsbók Eiríks Briem
No full textÁhrifa kennslubókar sr. Eiríks Briem í reikningi gætti allan síðasta þriðjung nítjándu aldar og fram á tuttugustu öld. Á því tímabili urðu miklar þjóðfélagsbreytingar á Íslandi, ekki síst í fræðslumálum, en einnig á sviði efnahags- og fjármála þar sem sr. Eiríkur var mjög virkur þátttakandi. Bók hans ber vott um djúpar rætur í landbúnaðarsamfélagi sjálfsþurftarbúskapar jafnframt eindreginni löngun til að uppfræða almenning, m.a. um ávöxtun fjármuna, en einnig um þá ætlun höfundar að forðast fræðilega framsetningu sem gæti vafist fyrir nemendum í sjálfsnámi. Athugun á verkefnum bókarinnar bregður upp þjóðlífsmyndum af hefðbundnum viðskiptaháttum bænda og kaupmanna og sígandi breytingum á búsetu og högum landsmanna.The Reverend Eiríkur Briem was author of an arithmetic textbook, widely used in Iceland from 1869 into the 1910s. This period was characterized by considerable societal change, both in educational matters and in economic terms, where Briem was an active participant. His aim was to create a practical handbook, devoid of theoretical explanations, suitable for self-study. A study of the textbook reveals the author’s roots in a self-sustaining society with centuries-old customs of farmers dealing with merchants, as well as his wish to provide people with financial education and advice towards cautious allocation of their income. Kristín Bjarnadóttir is associate professor at the School of Education, University of Iceland
Ultra Deep Temperature Behaviour of Wire Rope and Rope Wires
No full textMobile cranes are regularly operated in regions which experience ultra deep operating temperatures of down to -60?C (-76?F). In safety regulated work environments crane operations will be suspended simply because the lowest wire rope working temperature stated in the applicable standards is -40?C/F. Examples of ultra deep temperature wire rope application are shown in Figure 1.1 and 1.3. It should be noted that this paper is written in conjunction with a paper written by the co-author Ulrich Briem titled “Fatigue Behaviour of Rope Wires”, presented and published in unison with this one. In order to analyze the behaviour under ultra deep temperature conditions, tests on wire rope as well as on rope wires were carried out. In the following, static tensile and bending test results with rope and rope wires will be reported, which were carried out in conditions of down to -95?C (-139?F) as well as at room temperature. The conclusion is that the results of these tests can be adopted to crane wire rope as well
Sinfonien, op. 125
No full textLudwig van Beethoven. Leitung: Heinrich Hollreiser. Solisten: Tilla Briem, Sopran ; Ingeborg Lasser, Alt ; Helmuth Melchert, Tenor ; Helmut Fehn, Baß. Chöre: Städt. Musikverein ; Volkschor "Freiheit". Städtisches Orchester. Gesamtleitung: Heinrich Hollreiser. [W. D. Zimmermann]Tlw. in FrakturMotiv: Hand auf Griffbrett eines Kontrabasse
Infantile hepatocerebral syndromes associated with mutations in the mitochondrial DNA polymerase-γA
No full textWe studied nine infant patients with a combination of progressive neurological and hepatic failure. Eight children, including two sibling pairs and four singletons, were affected by Alpers' hepatopathic poliodystrophy. A ninth baby patient suffered of a severe floppy infant syndrome associated with liver failure. Analysis of POLG1, the gene encoding the catalytic subunit of mitochondrial DNA polymerase, revealed that all the patients carried different allelic mutations in this gene. POLG1 is a major disease gene in mitochondrial disorders. Mutations in this gene can be associated with multiple deletions, depletion or point mutations of mitochondrial DNA (mtDNA). In turn, these different molecular phenotypes dictate an extremely heterogeneous spectrum of clinical outcomes, ranging from adult-onset progressive ophthalmoplegia to juvenile ataxic syndromes with epilepsy, to rapidly fatal hepatocerebral presentations, including Alpers' syndrome. © The Author (2005). Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved
Interferon-alpha improves glucose tolerance in diabetic and non-diabetic patients with HCV-induced liver disease
No full textThis pilot study was initiated to evaluate factors controlling glucose tolerance in patients with hepatitis C virus-induced liver disease before and after therapy with recombinant interferon-alpha (r-INF-alpha). Fifteen patients with histologically and serologically proven hepatitis C infection underwent oral and frequently sampled intravenous glucose tolerance tests (FSIGTT) before and after four months of therapy (6 x 106 U r-INF-alpha, subcutaneously, three times a week). Glucose, insulin and C-peptide data from FSIGTT were analysed using the minimal modeling technique to determine insulin sensitivity, glucose effectiveness and first and second phase insulin secretion. According to the WHO criteria 13 patients, had normal glucose tolerance; diabetes mellitus was diagnosed in 2 patients. In the morning following the last r-INF-alpha injection four months later, insulin sensitivity improved significantly in hepatitis C virus-infected patients with normal glucose tolerance (2.17 +/- 0.37 vs. 6.18 +/- 0.94 10(-4) min(-1) per microU/ml, p < 0.001) and with diabetes mellitus (0.86 to 2.61; 0.46 to 1.06 10(-4) min(-1) per microU/ml). This effect was independent of the extent of fibrosis, virus load before treatment and therapy response. First phase insulin secretion increased in non-diabetic (139.2 +/- 17.1 vs. 200.0 +/- 32.7, p < 0.05) and diabetic patients with HCV infection (55.24 to 118.5; 84.23 to 261.1). Moreover, free fatty acid concentrations in all HCV-infected patients were significantly reduced (0.48 +/- 0.01 vs 0.21 +/- 0.03 mmol/l, p < 0.01). Therapy with recombinant interferon-alpha is associated with an amelioration of glucose tolerance in non-diabetic and diabetic HCV-infected patients
Matthäuspassion : Robert-Schumann-Saal ; Wiederholungsaufführung Mittwoch, 28. März, 19.30 Uhr
No full textJ. S. Bach. Leitung: Heinrich Hollreiser. Solisten: Tilla Briem ; Anni Bernards ; Walter Ludwig ; Helmut Fehn ; Philipp Goepelt. Michel Rühl (Cembalo) ; Clemens Ingenhoven (Orgel). Ausführende: Der Städt. Musikverein. Einstudierung: Michel Rühl ; Knabenchor des Städt. Humboldt-Gymnasiums. Das Städt. Orchester. Gesamtleitung: Heinrich Hollreiser. [W. D. Zimmermann]Tlw. in FrakturMotiv: Hand auf Griffbrett eines Kontrabasse
Sinfonie-Konzert des Städt. Orchesters : Donnerstag, den 2. Mai 1946, 19 Uhr, im Opernhaus ; Paul Hindemith: Orchestersuite "Mathis der Maler" (Erstaufführung) - Johannes Brahms: Violin-Konzert D-dur - Gustav Mahler: IV. Sinfonie ; die IV. Sinfonie von Gustav Mahler wird zur Übertragung vom Nordwestdeutschen Rundfunk übernommen
No full textunter Leitung von Heinrich Hollreiser. Solisten: Gerhard Taschner, Violine ; Tilla Briem, Sopra
Messiah <dt.>
No full textGeorg Friedrich Händel. Leitung: Heinrich Hollreiser. Solisten: Tilla Briem, Sopran ; Erna Daden, Alt ; Heinz Marten, Tenor ; Josef Greindl, Baß. Der Städt. Musikverein. Das Städt. Orchester. Einstudierung: Michel Rühl. Orgel: Clemens Ingenhoven. Gesamtleitung: Heinrich Hollreiser. [W. D. Zimmermann]Tlw. in FrakturMotiv: Hand auf Griffbrett eines Kontrabasse
Genotypes from patients indicate no paternal mitochondrial DNA contribution
No full textA cornerstone of mitochondrial genetics, strict maternal inheritance, has been challenged recently by the study of a patient with mitochondrial myopathy due to a sporadic 2bp deletion. The mitochondrial DNA (mtDNA) harboring the mutation was paternal in origin, whereas the patient's blood was identical to the maternal genotype. To determine whether this is a common phenomenon, we studied mtDNA sequence variation between muscle and blood from 35 patients with sporadic mitochondrial myopathies, but detected no evidence of paternal mtDNA transmission. Our findings suggest that paternal transmission of mtDNA is rare and should not alter our genetic advice to families
Fully integrated high quality factor <i>G</i><sub>m</sub><i>C</i> bandpass filter stage with highly linear operational transconductance amplifier
No full textThis paper presents an electrical, fully integrated, high quality (Q) factor
GmC bandpass filter (BPF) stage for a wireless 27 MHz
direct conversion receiver for a bendable sensor system-in-foil (Briem et al.,
2016). The core of the BPF with a Q factor of more than 200 is an
operational transconductance amplifier (OTA) with a high linearity at an
input range of up to 300 mVpp, diff. The OTA's
signal-to-noise-and-distortion-ratio (SNDR) of more than 80 dB in the
mentioned range is achieved by stabilizing its transconductance Gm with
a respective feedback loop and a source degeneration resistors RDG.
The filter stage can be tuned and is tolerant to global and local process
variations due to offset and common-mode feedback (CMFB) control circuits.
The results are determined by periodic steady state (PSS) simulations at
more than 200 global and local process variation parameter and temperature
points and corner simulations. It is expected, that the parasitic elements
of the layout have no significant influence on the filter behaviour. The
current consumption of the whole filter stage is less than 600 µA
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