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Search Results: 1 - 10 of 117881 matches for " T. Classen "
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Translation as the Catalyst of Cultural Transfer
Albrecht Classen
Humanities , 2012, DOI: 10.3390/h1010072
Abstract: This essay reflects on the many different strategies involved in translation, which is both a linguistic and a cultural-historical strategy. Examples from the Middle Ages and the Modern Age are adduced to illustrate the huge impact which translations have had on peoples and societies throughout time.
Humanities — To Be or Not To Be, That Is the Question
Albrecht Classen
Humanities , 2012, DOI: 10.3390/h1010054
Abstract: Let us carry some proverbial owls to Athens or coals to Newcastle, that is, revisit issues that have been discussed and examined by so many different voices in the past and the present. However, those issues by themselves are so powerful and important, so urgent and difficult that we must never tire of examining them always anew because they pertain centrally to our own human existence and prove to be the defining factors for our survival as a species. Why do we need the humanities as an academic discipline in the university, or in our educational system at large? What role do the humanities play both inside and outside the academy? Most universities in this world somehow acknowledge the importance of languages, literatures, music, art history, philosophy, religion, and education. But when it comes to basic financial issues, the humanities tend to be the first victims of budget cuts, if we disregard specifically liberal arts colleges that focus on the humanities above all or exclusively. [...]
Magnesium-L-Aspartat Hydrochlorid: Experimentelle und klinische Studienergebnisse
Classen HG
Journal für Mineralstoffwechsel , 2002,
Abstract: Ergebnisse epidemiologischer Studien haben gezeigt, da reichliche Magnesiumzufuhr das Risiko kardiovaskul rer und anderer Stress-bedingter Erkrankungen senkt. Magnesium-L-Aspartat-Hydrochlorid (MAH) enth lt quimolare Mengen an Magnesium (Mg) und Chlorid (Cl) und ver ndert daher das quilibrium der nicht metabolisierbaren S uren und Basen nicht. MAH ist ein toxikologisch sicherer Wirkstoff; die wichtigsten pharmakologischen Effekte werden durch Magnesium-Ionen und deren Ca2+-antagonistische Wirkung ausgel st. MAH bindet im Magen keine Salzs ure und interferiert unter physiologischen Bedingungen nicht mit der enteralen Resorption von Eisen, Kalium und Kalzium oder mit der zytostatischen Wirkung von Cisplatin und Cyclosporin. "Schlechte Verwerter" oraler Supplemente ben tigen mehr als die Standard-Dosierung von 15 mmol MAH; im Einzelfall müssen die Mengen auf 30 bis 40 mmol erh ht werden. Es ist belegt, da MAH Stress-Reaktionen bei Versuchs- und Nutztieren ebenso hemmt wie beim Menschen. Erwünschte Wirkungen sind unter vielen klinischen Bedingungen bewiesen worden, z. B. in Geburtshilfe und Gyn kologie, in der Kinderheilkunde, der Kardiologie, der Inneren Medizin und in der Traumatologie. Durch Kontrolle des Plasma/Serum-Mg und der Urin-Konzentrationen kann die orale Therapie optimiert werden.
The Challenges of the Humanities, Past, Present, and Future: Why the Middle Ages Mean So Much for Us Today and Tomorrow
Albrecht Classen
Humanities , 2014, DOI: 10.3390/h3010001
Abstract: Every generation faces the same challenge, to engage with the past and to cope with the present, while building its future. However, the questions and problems inherent in human life remain the same. It is a given that our society can only progress if we work toward handling ever newly rising demands in appropriate ways based on what we know and understand in practical and theoretical terms; but the drumming toward the future cannot be a one-way street. Instead, we have to operate with a Janus-faced strategy, with one eye kept toward tomorrow, and the other eye toward yesterday. Culture is, however we want to define it, always a composite of many different elements. Here I argue that if one takes out the past as the foundation of culture, one endangers the further development of culture at large and becomes victim of an overarching and controlling master narrative. This article does not insist on the past being the absolute conditio sine qua non in all our activities, but it suggests that the metaphorical ship of our cultural existence will not operate successfully without an anchor, the past. I will illustrate this claim with reference to some examples from medieval literature, philosophy, and religion as they potentially impact our present in multiple fashions.
Climate Change Alters Seedling Emergence and Establishment in an Old-Field Ecosystem
Aimée T. Classen,Richard J. Norby,Courtney E. Campany,Katherine E. Sides,Jake F. Weltzin
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0013476
Abstract: Ecological succession drives large-scale changes in ecosystem composition over time, but the mechanisms whereby climatic change might alter succession remain unresolved. Here, we asked if the effects of atmospheric and climatic change would alter tree seedling emergence and establishment in an old-field ecosystem, recognizing that small shifts in rates of seedling emergence and establishment of different species may have long-term repercussions on the transition of fields to forests in the future.
Microbial communities respond to experimental warming, but site matters
Melissa A. Cregger,Nathan J. Sanders,Robert R. Dunn,Aimée T. Classen
PeerJ , 2015, DOI: 10.7717/peerj.358
Abstract: Because microorganisms are sensitive to temperature, ongoing global warming is predicted to influence microbial community structure and function. We used large-scale warming experiments established at two sites near the northern and southern boundaries of US eastern deciduous forests to explore how microbial communities and their function respond to warming at sites with differing climatic regimes. Soil microbial community structure and function responded to warming at the southern but not the northern site. However, changes in microbial community structure and function at the southern site did not result in changes in cellulose decomposition rates. While most global change models rest on the assumption that taxa will respond similarly to warming across sites and their ranges, these results suggest that the responses of microorganisms to warming may be mediated by differences across the geographic boundaries of ecosystems.
The helium-rich subdwarf CPD-20 1123: a post-common envelope binary evolving onto the extended horizontal branch
N. Naslim,S. Geier,C. S. Jeffery,N. T. Behara,V. M. Woolf,L. Classen
Physics , 2012, DOI: 10.1111/j.1365-2966.2012.21012.x
Abstract: Subluminous B stars come in a variety of flavours including single stars, close and wide binaries, and pulsating and non-pulsating variables. A majority have helium-poor surfaces (helium by number nHe<1%), whilst a minority have extremely helium-rich surfaces (nHe>90%). A small number have an intermediate surface helium abundance (~ 10 - 30%), accompanied by peculiar abundances of other elements. The questions posed are i) whether these abundance peculiarities are associated with radiatively-driven and time-dependent stratification of elements within the photosphere as the star evolves from an helium-enriched progenitor to become a normal helium-poor sdB star, and ii) whether these phenomena occur only in single sdB stars or are also associated with sdB stars in binaries. We present a fine analysis of the bright intermediate-helium sdB star CPD-20 1123 (Albus 1) which shows it to be cool, for a hot subdwarf, with Teff~23 000 K and with a surface helium abundance ~17% by number. Other elements do not show extraordinary anomalies; in common with majority sdB stars, carbon and oxygen are substantially depleted, whilst nitrogen is enriched. Magnesium through sulphur appear to be depleted by ~0.5 dex, but chlorine and argon are substantially enhanced. We also present a series of radial-velocity measurements which show the star to be a close binary with an orbital period of 2.3 d, suggesting it to be a post-common-envelope system. The discovery of an intermediate helium-rich sdB star in a close binary in addition to known and apparently single exemplars supports the view that these are very young sdB stars in which radiatively-driven stratification of the photosphere is incomplete.
Binaries discovered by the MUCHFUSS project: SDSS J162256.66$+$473051.1 - An eclipsing subdwarf B binary with a brown dwarf companion
V. Schaffenroth,S. Geier,U. Heber,T. Kupfer,E. Ziegerer,C. Heuser,L. Classen,O. Cordes
Physics , 2014, DOI: 10.1051/0004-6361/201423377
Abstract: Hot subdwarf B stars (sdBs) are core helium-burning stars located on the extreme horizontal branch. About half of the known sdB stars are found in close binaries. Their short orbital periods of 1.2 h to a few days suggest that they are post common-envelope systems. Eclipsing hot subdwarf binaries are rare, but important to determine the fundamental stellar parameters. Low-mass companions are identified by the reflection effect. In most cases the companion is a main sequence star near the stellar mass limit. Here we report the discovery of an eclipsing hot subdwarf binary SDSS J162256.66+473051.1 (J1622) of very short orbital period (0.0697 d), found in the course of the MUCHFUSS project. The lightcurve shows grazing eclipses and a prominent reflection effect. An analysis of the light- and radial velocity (RV) curves indicated a mass ratio of $q=$ 0.1325, an RV semiamplitude $K=47.2\rm\,km\,s^{-1}$, and an inclination of $i=72.33^\circ$. We show that a companion mass of 0.064 $M_{\rm \odot}$, well below the hydrogen-burning limit, is the most plausible solution, which implies a mass close to the canonical mass (0.47 $M_{\rm \odot}$) of the sdB star. Therefore, the companion is a brown dwarf, which not only survived the engulfment by the red-giant envelope, but also triggered its ejection, and enabled the sdB star to form. The rotation of J1622 is expected to be tidally locked to the orbit. However, J1622 rotates too slowly ($v_{\rm rot}=74.5\pm 7\rm\,km\,s^{-1}$) to be synchronized, challenging tidal interaction models.
Correction: Treatment of achalasia: the short-term response to botulinum toxin injection seems to be independent of any kind of pretreatment
M Storr, P Born, E Frimberger, N Weigert, T R?sch, A Meining, M Classen, HD Allescher
BMC Gastroenterology , 2003, DOI: 10.1186/1471-230x-3-32
Abstract: We regret any inconvenience that this inaccuracy in the methods section might have caused and thank the editorial board of BMC Gastroenterology for the kind responsiveness and the possibility to publish an immediate correction.The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-230X/3/32/prepub
Treatment of achalasia: the short-term response to botulinum toxin injection seems to be independent of any kind of pretreatment
M Storr, P Born, E Frimberger, N Weigert, T R?sch, A Meining, M Classen, HD Allescher
BMC Gastroenterology , 2002, DOI: 10.1186/1471-230x-2-19
Abstract: Forty patients who presented with symptomatic achalasia were treated with BTX injection (48 injections in 40 patients). Some of the patients had received prior treatment (seven with myotomy, seven with dilatation and eight with BTX). The symptoms were assessed using a global symptom score (0–10), which was evaluated before treatment, 1 week afterwards, and 1 month afterwards. Manometry was also carried out before and after treatment. Three different selections of patients were studied: all patients; untreated patients; and patients with prior BTX, dilatation, or myotomy.After BTX injection, there was a significant reduction in LOSP (before, 38.2 ± 11.3 mmHg; 1 week after, 20.5 ± 6.9 mmHg; 1 month after, 17.8 ± 6.8 mmHg; P < 0.001). The global symptom score and symptom subscores (dysphagia, regurgitation, chest pain) were significantly decreased after 1 week and 1 month. When the beneficial effects following BTX injection were compared (untreated vs. pretreated), neither changes in LOSP nor beneficial effects on the symptom scores significantly differed. After 6 months, 67.7% of all treated patients were still in symptomatic remission (subgroups: previously untreated patients, 61.5%, n = 26; prior dilatation, 71.4%, n = 7; prior myotomy, 71.4%, n = 7; prior BTX, 73.9%, n = 8).BTX injection offers an alternative treatment for achalasia which is safe and can be performed in an outpatient setting. The initial response to BTX, in terms of symptom scores and LOSP, appears to be independent of any prior treatment. A number of patients do not adequately respond to balloon dilatation or myotomy, which are the first-line treatment modalities in achalasia patients. BTX injection can be performed in these patients, and symptomatic benefit can be expected in the same percentages as with BTX injection in untreated patients.Achalasia is a primary motility disorder of the oesophagus that is characterised by impaired opening of the lower oesophageal sphincter, resulting in delayed o
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