2,491 research outputs found
Potential-based Evaluation for Initial Selection of Technologies
Due to the increasing internationalization of markets, rising cost pressure, and shortened product life cycles, manufacturing companies are facing increasing competition and innovation pressure. To secure competitiveness, the early development of new and innovative technologies and their implementation in the market as products or services is paramount. To use available resources for innovation efficiently, potentials of new technologies must be exploited at early stages. The main objective of this paper is to support companies in early decision-making processes regarding new technologies by providing a systematic approach to technology assessment. For this purpose, a model is developed which supports the evaluation of the technology potentials based on the limited information available at an early stage and, thus, creates the basis for an initial technology selection
Steuerungsinstrumente des Energiemanagements in der Verwaltung
Im Rahmen des Projektes „Effektive Steuerung der Energieeinsparung in der Verwaltung“ wurden theoretische Konzepte zur Steuerung des Energieverbrauchs in Verwaltungen sowie vielfältige praktische Beispiele aus Kommunen und Unternehmen recherchiert und systematisiert. Das Projekt wurde im Zeitraum vom 01.10.2007 – 31.01.2008 auf Initiative der Stadtverwaltung Dresden durchgeführt und vom Lehrstuhl Betriebliche Umweltökonomie an der TU Dresden wissenschaftlich begleitet.... (Auszug aus "Zielstellung"
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The Impact of Text Message Reminders on Adherence to Antimalarial Treatment in Northern Ghana: A Randomized Trial
Background: Low rates of adherence to artemisinin-based combination therapy (ACT) regimens increase the risk of treatment failure and may lead to drug resistance, threatening the sustainability of current anti-malarial efforts. We assessed the impact of text message reminders on adherence to ACT regimens. Methods: Health workers at hospitals, clinics, pharmacies, and other stationary ACT distributors in Tamale, Ghana provided flyers advertising free mobile health information to individuals receiving malaria treatment. The messaging system automatically randomized self-enrolled individuals to the control group or the treatment group with equal probability; those in the treatment group were further randomly assigned to receive a simple text message reminder or the simple reminder plus an additional statement about adherence in 12-hour intervals. The main outcome was self-reported adherence based on follow-up interviews occurring three days after treatment initiation. We estimated the impact of the messages on treatment completion using logistic regression. Results: 1140 individuals enrolled in both the study and the text reminder system. Among individuals in the control group, 61.5% took the full course of treatment. The simple text message reminders increased the odds of adherence (adjusted OR 1.45, 95% CI [1.03 to 2.04], p-value 0.028). Receiving an additional message did not result in a significant change in adherence (adjusted OR 0.77, 95% CI [0.50 to 1.20], p-value 0.252). Conclusion: The results of this study suggest that a simple text message reminder can increase adherence to antimalarial treatment and that additional information included in messages does not have a significant impact on completion of ACT treatment. Further research is needed to develop the most effective text message content and frequency. Trial Registration ClinicalTrials.gov NCT0172273
Sustainable urban mobility through the perspective of overcompliance
Being at the frontier with regard to sustainable aspects of manufacturing may serve as competitive advantage due to the increasing trend of consumer awareness. In order to adhere to the consequent pressure from external stakeholders such as customers, investors, competitors, interest groups and local municipals, companies voluntarily overcomply with social and environmental norms. This paper explores the incentives for the industry to embrace overcompliance as a strategic means to gain competitive advantage and take the lead in sustainable manufacturing. Examples from recent industrial trends are used to present the relevance of the combination of overcompliance and sustainability in the field of mobility. Studies of the Collaboration Research Center 1026 are presented as additional examples of strategic overcompliance with emission standards in the field of sustainable urban mobility
How many species of mite-harvestmen (Opiliones, Cyphophthalmi) are there in Austria?
Der bodenbewohnende Milbenkanker Cyphophthalmus duricorius Joseph, 1868 (Fam. Sironidae) galt mehr als 60 Jahre lang als die einzige in Österreich vorkommende Art der Weberknecht-Unterordnung Cyphophthalmi. Neuere Aufsammlungen zeigen jedoch, dass mindestens zwei weitere Cyphophthalmi-Arten in Österreich existieren: 1) Siro cf. crassus Novak & Giribet, 2006 wurde an einer Lokalität in der SW Steiermark nahe der slowenischen Grenze gefunden und repräsentiert eine zweite Gattung von Sironiden in Österreich. 2) Ein weiterer, morphologisch distinkter Sironide („Sironidae gen. et sp. nov.?“) − derzeit noch unbeschrieben und taxonomisch nicht zugeordnet − stammt aus Böden im Grenzgebiet Steiermark-Kärnten. Obwohl bislang kein syntopes Vorkommen belegt ist, können alle drei Arten in einem kleinen Areal von wenigen Quadratkilometern gefunden werden.For the last 60 years, the mite-harvestman Cyphophthalmus duricorius Joseph, 1868, a soil-dwelling sironid, has been considered to be the only representative of the opilionid suborder Cyphophthalmi in Austria. However, novel data from recent collections confirm the presence of at least two further Austrian cyphophthalmid species. (1) Siro cf. crassus Novak & Giribet, 2006 occurs in at least one location in SW Styria near the Slovenian border and hence represents a member of a second genus of Austrian sironids. (2) A further morphologically distinct sironid (“Sironidae gen. et sp. nov.?”) – so far undescribed and systematically not placed in detail – was collected in the borderland between Styria and Carinthia. All three species can be found in a small area of a few square-kilometers; although no syntopic occurrence was recorded
EP-1263: Survival and symptom relief after palliative radiotherapy for esophageal cancer
© Ivyspring International Publisher. Reproduction is permitted for personal, noncommercial use, provided that the article is in whole, unmodified, and properly cited. Se
prevalence and lack of association with selected cardiovascular and metabolic disorders—findings of a multicenter population-based study
Background We determined the prevalence of anti-nuclear autoantibodies (ANAs)
in the German adult population and examined the association between ANAs and
cardiovascular and metabolic disorders. Methods We used data and blood samples
from the pretest phases of the German National Cohort, obtained from six of
the 18 study centers (n = 1199). All centers applied standardized instruments
including face-to-face interviews, anthropometric measurements and collection
of blood samples. Self-reported histories of diabetes mellitus, heart attack
and elevated blood cholesterol and/or lipids were recorded. Height, weight and
blood pressure were measured. ANAs were detected using a semi-automated system
(AKLIDES®; Medipan GmbH, Dahlewitz, Germany). A positive ANA was defined as a
titer ≥ 1:80. ANA were classified as weakly (1:80 or 1:160), moderately (1:320
or 1:640) or strongly (≥1:1280) positive. Specific autoantibodies against
nuclear antigens were detected with second-step assays according to the ANA
staining pattern. Associations between the assessed disorders and ANA
positivity and pattern were examined using sex and age-adjusted mixed-effects
logistic regression models. Results Thirty-three percent (95% confidence
interval; 31–36%) of the 1196 participants (measurements could not be obtained
from three samples) were ANA positive (titer ≥ 1:80). The proportions of
weakly, moderately and strongly positive ANA were 29%, 3.3% and 1.3%,
respectively. ANA positivity was more common among women than men across all
titers (χ2, p = 0.03). ANA positivity, even when stratified according to
height of titer or immunofluorescent pattern, was not associated with
diabetes, elevated blood cholesterol and/or lipids, obesity or hypertension.
Second-step autoantibody assays were positive in 41 of the 83 samples (49%)
tested, with anti-DFS70 (n = 13) and anti-dsDNA (n = 7) being most frequent.
These subgroups were too small to test for associations with the disorders
assessed. Conclusions The prevalence of ANA positivity in the German general
population was similar to values reported from other countries. Contrary to
other studies, there was no association with selected self-reported and
objectively measured cardiovascular and metabolic variables
Application of magnetic resonance imaging in transgenic and chemical mouse models of hepatocellular carcinoma
<p>Abstract</p> <p>Background</p> <p>Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide. The molecular mechanisms underlying hepatocarcinogenesis are still poorly understood. Genetically modified mice are powerful tools to further investigate the mechanisms of HCC development. However, this approach is limited due to the lack of non-invasive detection methods in small rodents. The aim of this study was to establish a protocol for the non-invasive analysis of hepatocarcinogenesis in transgenic mice using a clinical 1.5 Tesla Magnetic Resonance Imaging scanner.</p> <p>Results</p> <p>As a model system we used hepatocyte-specific c-myc transgenic mice developing hepatocellular carcinoma at the age of 12-15 months. The scans of the murine livers included axial T2-weighted turbo-spin echo (TSE) images, axial T1-weighted and contrast enhanced T1-weighted gradient echo (fast field echo, FFE) and sagittal true Fast Imaging with Steady state Precession (true-FISP) images. Application of contrast agent was performed via tail vein-catheter and confirmed by evaluation of the altered longitudinal relaxation T1 time before and after application. Through technical adaptation and optimization we could detect murine liver lesions with a minimum diameter of approximately 2 mm and provided histopathological evidence that these MR findings correspond to hepatocellular carcinoma. Tumor growth was repeatedly measured using sequential MRI with intervals of 5 weeks and subsequent volumetric analysis facilitating direct comparison of tumor progression between individual animals. We finally demonstrated that our protocol is also applicable in the widely- used chemical model of N-nitrosodiethylamine-induced hepatocarcinogenesis.</p> <p>Conclusion</p> <p>Our protocol allows the non-invasive, early detection of HCC and the subsequent continuous monitoring of liver tumorgenesis in transgenic mice thereby facilitating future investigations of transgenic tumor mouse models of the liver.</p
Voluntary Wheel Running in Old C57BL/6 Mice Reduces Age-Related Inflammation in the Colon but Not in the Brain
Inflammation is considered a possible cause of cognitive decline during aging. This study investigates the influence of physical activity and social isolation in old mice on their cognitive functions and inflammation. The Barnes maze task was performed to assess spatial learning and memory in 3, 9, 15, 24, and 28 months old male C57BL/6 mice as well as following voluntary wheel running (VWR) and social isolation (SI) in 20 months old mice. Inflammatory gene expression was analyzed in hippocampal and colonic samples by qPCR. Cognitive decline occurs in mice between 15 and 24 months of age. VWR improved cognitive functions while SI had negative effects. Expression of inflammatory markers changed during aging in the hippocampus ( Il1a / Il6 / S100b / Iba1 / Adgre1 / Cd68 / Itgam ) and colon ( Tnf / Il6 / Il1ra / P2rx7 ). VWR attenuates inflammaging specifically in the colon ( Ifng / Il10 / Ccl2 / S100b / Iba1 ), while SI regulates intestinal Il1b and Gfap . Inflammatory markers in the hippocampus were not altered following VWR and SI. The main finding of our study is that both the hippocampus and colon exhibit an increase in inflammatory markers during aging, and that voluntary wheel running in old age exclusively attenuates intestinal inflammation. Based on the existence of the gut-brain axis, our results extend therapeutic approaches preserving cognitive functions in the elderly to the colon
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