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141 results on '"Embrechts, M"'

1. Stotteren

Author

Franken, M.C., Embrechts, M., Bronkhorst, J.B.M., Eimers, T., Embrechts, M., Franken, M.C., Goorhuis-Brouwer, S.M., Hakvoort, F.J., Hendriksen, J.G.M., van Houten-van den Bosch, E.J., Kooijman, P.G.C., Kuipers, J., Lepeltak, J.C., van der Linden, E., van Luit, J.E.H., Peters, W.A.M., Ruijssenaars, A.J.J.M., Scharree, C. J., van Strien, J.W., and van Widenfelt, B. M.

Published
2010
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2. Spraak, taal en leren

Author

Bronkhorst, J.B.M., primary, Eimers, T., additional, Embrechts, M., additional, Franken, M.C., additional, Goorhuis-Brouwer, S.M., additional, Hakvoort, F.J., additional, Hendriksen, J.G.M., additional, van Houten-van den Bosch, E.J., additional, Kooijman, P.G.C., additional, Kuipers, J., additional, Lepeltak, J.C., additional, van der Linden, E., additional, van Luit, J.E.H., additional, Peters, W.A.M., additional, Ruijssenaars, A.J.J.M., additional, Scharree, C. J., additional, van Strien, J.W., additional, and van Widenfelt, B. M., additional

Published
2010
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3. Neonatal factors predictive for respiratory and gastro-intestinal morbidity after esophageal atresia repair

Author

Rayyan, M. (M.), Embrechts, M, Van Veer, H., Aerts, R., Hoffman, I., Proesmans, W. (Willem), Allegaert, K.M. (Karel), Naulaers, G. (Gunnar), Rommel, N., Rayyan, M. (M.), Embrechts, M, Van Veer, H., Aerts, R., Hoffman, I., Proesmans, W. (Willem), Allegaert, K.M. (Karel), Naulaers, G. (Gunnar), and Rommel, N.

Abstract

Background: Esophageal atresia is a major congenital foregut anomaly. Affected patients often suffer from respiratory and gastro-intestinal morbidity. The objective of this study is to identify possible neonatal predictive factors contributing to a long-term complicated clinical course in patients after repair of esophageal atresia. Methods: A total of 93 patients born between 1993 and 2013, with esophageal atresia and surviving the neonatal period were included in this retrospective study. A complicated clinical course was defined as the occurrence of 1 of these complications: severe gastroesophageal reflux, esophageal stricture requiring dilatations, need for tube feeding for >100 days, severe tracheomalacia, severe chronic respiratory disease and death. We used linear models with a binomial distribution to determine risk factors for gastro-intestinal or respiratory complicated evolution and a backward stepwise elimination procedure to reduce models until only significant variables remained in the model. Multinomial logistic regression was used to assess risk factors for different evolutions of complication. Model parameter estimates were used to calculate odds ratios for significant risk factors. Results: Fifty-seven patients (61%) had a complicated clinical course in the first year of life and 47 (51%) had a complicated evolution during years 1e6. In the first year, prematurity was a significant factor for complicated gastro-intestinal (OR 2.84) and respiratory evolution (OR 2.93). After 1 year, gastro-intestinal morbidity in childhood was associated with VACTERL association (OR 12.2) and a complicated first year (OR 36.1). Respiratory morbidity was associated with congenital heart disease (OR 12.9) and a complicated first year (OR 86.9). Multinomial logistic regression showed that prematu

Published
2019
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7. A study of the reprocessing of fine and ultrafine cassiterite from gravity tailing residues by using various flotation techniques

Author

Leistner, T., Embrechts, M., Leissner, T., Chehreh Chelgani, S., Osbahr, I., Möckel, R., Peuker, U. A., and Rudolph, M.

Subjects
Ultrafine, Reprocessing, Cassiterite, Tailings, Flotation, Oil-assisted flotation
Abstract

This study investigates the reprocessing of once disposed tin tailings from a historic German tin operation through different surface properties based processing techniques. Froth flotation and agglomeration flotation, by using commercially available cassiterite collectors from Clariant, were chosen as processing techniques. Isooctane as a nonpolar oil was used to promote the collection of ultrafine (-10 µm) cassiterite by selective agglomeration, and thus, size enlargement. Results indicate that by using sulfosuccinamates as a collector, around 80% of the fine (-50 µm) to very fine (-20 µm) cassiterite can be recovered (representing ~50% of the total cassiterite in the tailings sample). Agglomeration flotation experiments showed inferior results for recovering the ultrafine cassiterite (for feed fractions in the -25 µm size range). Oil/froth interaction and increased pulp ion content are considered as the main contributing causes.

Published
2016

8. Investigating the recovery of (ultrafine) cassiterite from tailings disposals using oil-assisted flotation methods

Author

Leistner, T., Embrechts, M., Chereh Chelgani, S., Rudolph, M., and Peuker, U.

Abstract

As a consequence of historic tin-mining activities up until late 1980s, several mining disposals exist in the German Erzgebirge (Ore Mountains). These disposals still contain substantial amounts of cassiterite (mainly as ultrafine particles) resulting either from de-sliming steps or from tailings of separation methods, which were not sensitive enough for fine particles. Based on industrial demands, there is a considerable interest to reprocess these disposals using beneficiation methods for ultrafine particles. In this paper we report on the reprocessing of material from one exemplary heap applying oil-assisted flotation methods (oil agglomeration flotation and two-liquid flotation). Isooctane as a non-polar oil was used to promote the collection of cassiterite either by selective aggregation or as carriers. Recovery and product quality are investigated with different process parameters: various collectors (e.g. sulphosuccinamates and phosphonic acids), particle sizes, oil dosage, oil/pulp agitation time and pulp density. Furthermore, a comparison between these results with conventional flotation tests without using oil as process aid is presented.

Published
2015

9. Aufbereitung Ehrenfriedersdorfer Spülsande - Untersuchungen zur Anwendung von Dichtetrennung und Flotationsmethoden zur Kassiteritgewinnung im Fein- und Feinstkornbereich

Author

Leißner, T., Leistner, T., Embrechts, M., Michaux, B., Osbahr, I., Möckel, R., Rudolph, M., Gutzmer, J., and Peuker, U.

Abstract

Jahrhundertelanger Bergbau im Erzgebirgsraum hat neben einer welterbewürdigen Montanregion auch viele Bergbauhalden zurück gelassen. Unter aktuellen Rohstoffpolitischen Gesichtspunkten können diese Halden potentiellen Ressourcen darstellen. So wurde zum Beispiel im Ehrenfriedersdorfer Revier bis zum Jahr 1990 Zinn und Wolfram gewonnen. Mithilfe eines vielstufigen Verfahrens aus Zerkleinerung, Klassierung und Dichtetrennung wurden Schwermineralmischkonzentrate gewonnen, die in nachfolgenden Trennschritten in ein Kassiterit- und ein Wolframkonzentrat sowie die störenden arsenhaltigen Minerale zerlegt wurden. Beim Erzeugen der Mischkonzentrate über Dichtesortierprozesse von klassiertem Material fielen Bergefraktionen verschiedener Körnungen an. Während die Abgänge der Mittel- und Grobkornsetzmaschinen als Split verkauft wurden, sind die feinkörnigeren Abgänge der Herdwäsche den Spülhalden zugeführt worden. In dem Betriebszeitraum von 1949 bis 1990 wurden ein Zinnausbringen zwischen 58 und 75 Prozent erreicht. Ein nennenswerter Anteil des Zinns ging als feinkörniges, nicht-aufbereitbares Material in den Spülsand verloren, entweder als fein- bis feinstkörniger, freier Kassiterit, welcher nicht durch die Herde gewonnen werden konnte oder als feinkörniger, mit Bergemineralen verwachsener Kassiterit, der aufgrund des unzureichenden Aufschlusses in die Abgänge gelangte. Im Rahmen des internationalen EMerald-Masterprogramms wurden zwei Abschlussarbeiten angefertigt, die sich mit Untersuchungen zur Aufbereitbarkeit des Ehrenfriedersdorfer Spülsands befassen. Hierbei lag der Fokus im Erhalt von Aussagen zur möglichen Gewinnung des fein- und feinstkörnigen Kassiterits durch Feinstkorndichtetrennung mittels Sortierzentrifugen (Falcon Separator) sowie durch verschiedene Flotationsmethoden (konventionelle Schaumflotation und Agglomerationsflotation). Basierend auf Ergebnissen der Aufschlussanalyse (Mineral Liberation Analyzer, MLA) wurden verschiedene Trennschnitte festgelegt und mittels Querstromklassierung Probenmaterial in definierten Größenklassen erzeugt. Die experimentellen Untersuchungen erfolgten am klassierten Material. Aussagen zum Ausbringen und zur Anreicherung des Kassiterits in den einzelnen Prozessschritten wurde durch Gehaltsbestimmung der Prozessprodukte mittels Röntgenfluoreszenzanalyse (XRF) gewonnen.

Published
2015

14. Tweetaligheid

Author

van der Linden, E., Bronkhorst, J.B.M., Eimers, T., Embrechts, M., Franken, M.C., Goorhuis-Brouwer, S.M., Hakvoort, F.J., Hendriksen, J.G.M., van Houten-van den Bosch, E.J., Kooijman, P.G.C., Kuipers, J., Lepeltak, J.C., van Luit, J.E.H., Peters, W.A.M., Ruijssenaars, A.J.J.M., Scharree, C.J., van Strien, J.W., van Widenfelt, B.M., and ACLC (FGw)

Published
2010

17. Stotteren

Author

Franken, Marie-Christine, Embrechts, M, Bakker, G.A., and Otorhinolaryngology and Head and Neck Surgery

Published
2006

18. Nijmeegse Pragmatiek test (NPT)

Author

Embrechts, M., Mugge, A., and Bon, W.H.J. van

Subjects
Learning and Plasticity
Abstract

Item does not contain fulltext 123 p.

Published
2005

20. Language profiles in ASD, SLI, and ADHD.

Author

Geurts, H.M., Embrechts, M., Geurts, H.M., and Embrechts, M.

Abstract

Contains fulltext : 69544.pdf (publisher's version ) (Closed access), Developmental disorders might differ in their language profiles when using parent reports. The first study indicated that school aged children with ASD have similar language profiles as children with ADHD. Both groups had relatively more difficulties with pragmatics than with structural language aspects. The second study indicated that both preschoolers with ASD and those with SLI show the opposite pattern, thus having relatively more difficulties with structural language aspects than with pragmatics. Finally, an increase in the presence of ADHD characteristics of impulsivity in these preschoolers is associated with an increase in language difficulties, while there is no such relation with inattention. It seems useful to evaluate the communication abilities of children regularly in the course of development and take ADHD characteristics into account. Finally recommendations on clinical use of the Children's Communication Checklist-2 (CCC-2, Bishop 2003) are discussed.

Published
2008

30. Doe mee met N.L.P

Author

Embrechts, M.

Abstract

Item does not contain fulltext

Published
1995

32. The progression of benign prostatic hyperplasia: examining the evidence and determining the risk.

Author

Anderson, J., Roehrborn, C.G., Schalken, J.A., Embrechts, M., Anderson, J., Roehrborn, C.G., Schalken, J.A., and Embrechts, M.

Abstract

Item does not contain fulltext, BACKGROUND: Benign prostatic hyperplasia (BPH) is often associated with enlargement of the prostate gland, lower urinary tract symptoms, decreased urinary flow and a reduced quality of life. Furthermore, if the symptoms associated with BPH are left untreated, serious complications, such as acute urinary retention, may ensue. Evidence is emerging from long-term clinical studies to suggest that BPH is a progressive disease, with some patients progressing much more rapidly than others. OBJECTIVE: This article aims to explore the natural history of BPH progression from a molecular, pathological and clinical perspective, with emphasis on the key clinical evidence to support the progressive nature of this disease. How our increased understanding of the disease and of the risk factors for BPH progression might be applied to improve current management practices are also discussed. CONCLUSION: Strategies to identify patients most at risk and guidelines directed towards long-term management, in addition to short-term treatment, may be useful in helping to prevent BPH progression.

Published
2001

33. De ontwikkeling van een Pragmatiektest.

Author

Embrechts, M., Mugge, A., Lieshout, P.H.H.M. van, Embrechts, M., Mugge, A., and Lieshout, P.H.H.M. van

Abstract

Item does not contain fulltext

Published
1999

34. FrontMatter.

Author

Bronkhorst, J.B.M., Eimers, T., Embrechts, M., Franken, M.C., Goorhuis-Brouwer, S.M., Hakvoort, F.J., Hendriksen, J.G.M., van Houten-van den Bosch, E.J., Kooijman, P.G.C., Kuipers, J., Lepeltak, J.C., van der Linden, E., van Luit, J.E.H., Peters, W.A.M., Ruijssenaars, A.J.J.M., Scharree, C. J., van Strien, J.W., and van Widenfelt, B. M.

Published
2010

36. Exchange Rate Theory: Chaotic models of foreign exchange markets

Author

Grauwe, P., Dewachter, H., Embrechts, M., Jong, E. de, Grauwe, P., Dewachter, H., Embrechts, M., and Jong, E. de

Abstract

P. Grauwe Exchange Rate Theory: Chaotic models of foreign exchange markets Cambridge:Cambridge University Press ,1996, Item does not contain fulltext

Published
1996

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