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Search Results: 1 - 10 of 1990 matches for " Uwe Jochum "
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Der Souver n
Uwe Jochum
Libreas : Library Ideas , 2009,
Uwe Jochum
Libreas : Library Ideas , 2006,
Marjane Satrapi. Persépolis
Charbanou Jochum-Maghsoudnia
Droit et Cultures , 2009,
Abstract: Dans les quatre volumes de sa bande dessinée Persépolis Marjane Satrapi décrit et illustre en noir et blanc son autobiographie. Elle y superpose de manière vertigineuse et transparente les événements et les faits marquants de l’Iran contemporain qu’elle entremêle avec les vies au quotidien sous le régime des mollahs. Le récit de sa vie d’adolescente exilée fait appel à des questions universelles comme celles de l’intégration, de l’adaptation à d’autres cultures et de l’identité.Née en Iran en...
Results from the CRESST Dark Matter Search at Gran Sasso
J. Jochum,CRESST Collaboration
Physics , 2000, DOI: 10.1134/1.855777
Abstract: We present the current status of CRESST(Cryogenic Rare Event Search using Superconducting Thermometers) project and new results concerning the development of new detectors based on the simultaneous measurement of phonons and scintillation light. A significant reduction in the background rate could recently be achieved. With our newly developed method for the simultaneous measurement of scintillation light, strong background discrimination is possible also in larger detectors, resulting in a substantial increase in WIMP detection sensitivity.
Conversion of Syringaldehyde to Sinapinic Acid through Knoevenagel-Doebner Condensation  [PDF]
Jack van Schijndel, Luiz Alberto Canalle, Jochum Smid, Jan Meuldijk
Open Journal of Physical Chemistry (OJPC) , 2016, DOI: 10.4236/ojpc.2016.64010
Abstract: Sinapinic acid is a widespread compound in vegetable material and is as such common in the human diet. Recently it has drawn attention because of its biological activities. Sinapinic acid can be synthesized from syringaldehyde via the Knoevenagel-Doebner condensation. However this reaction is limited by the formation of 4-vinylsyringol after a second decarboxylation. To gain more detailed information about this reaction and to improve control over the formation of sinapinic acid, the concentration time history of syringaldehyde and the reaction products of this reaction have been monitored over time at different reaction temperatures. The formation of 4-vinylsyringol was found to be inhibited by performing the reaction at temperature below 80°C. This allows the reaction to be optimized for the production of sinapinic acid, with an optimal yield of 78% after 2.5 hours at 70°C.
Mollusca, Gastropoda, Ellobioidea, Carychium minimum O.F. Muller, 1774: Filling gaps. New population record for the State of New York, Northeastern United States
Weigand, A. M.,Jochum, A.
Check List , 2010,
Abstract: The current note reports two new populations of the introduced snail Carychium minimum O.F. Müller, 1774 atIthaca, New York, USA. It confirms the naturalization of this species in Northeastern North America, which was previouslyknown on drift material only.
Towards Quantitative Characterisation of the Small Force Transducer Used in Nanoindentation Instruments  [PDF]
Zhi Li, Uwe Brand
Modern Instrumentation (MI) , 2013, DOI: 10.4236/mi.2013.24009

Quantitative characterization of the mechanical properties of materials in micro-/nano-scale using depth-sensing indentation technique demands high performance of nanoindentation instruments in use. In this paper, the efforts to calibrate the capacitive force transducer of a commercial nanoindentation instrument are presented, where the quasi-static characteristic of the force transducer has been calibrated by a precise compensation balance with a resolution of ~1 nN. To investigate the dynamic response of the transducer, an electrostatic MEMS (Micro-Electro-Mechanical System) based on nano-force transfer standard with nano-Newton (10-9 Newton) resolution and a bandwidth up to 6 kHz have been employed. Preliminary experimental results indicate that 1) the force transducer under calibration has a probing force uncertainty less than 300 nN (1σ) in the calibration range of 1 mN; 2) the transient duration at contact points amounts to 10 seconds; 3) the overshoot of engagement is pre-load dependent.

The scalar Singlet-Triplet Dark Matter Model
Oliver Fischer,Jochum J. van der Bij
Physics , 2013, DOI: 10.1088/1475-7516/2014/01/032
Abstract: We consider a model for cold dark matter, which combines a real scalar singlet and a real scalar $SU(2)_L$ triplet field, both of which are residing in the odd representation of a global $Z_2$ symmetry. The parameter space of the model is constrained by the inferred dark matter abundance from the WMAP and Planck data, the most recent results from the direct dark matter search experiment LUX, the Z boson decay width from LEP-I and perturbativity of the coupling parameters. The phenomenology of the remaining parameter space is studied. We find that the model allows for DM masses near the electroweak scale and a variety of decay scenarios.
Affiliation of Dihydrolipoyl Dehydrogenase Allozymes in Mycorrhizae of European Forest Trees and Characterization of the Enzyme of the Matt Bolete (Xerocomus pruinatus) and the Bay Bolete (X. badius)  [PDF]
Uwe Schirkonyer, Gunter M. Rothe
Open Journal of Ecology (OJE) , 2018, DOI: 10.4236/oje.2018.86022
Abstract: Mycorrhizal roots of the deciduous trees European beech (Fagus sylvatica (L.)) and Sessile oak (Quercus petraea (MattuschkaLiebl.)) and the conifers Norway spruce (Picea abies (L.) H. Karst.) and European larch (Larix decidua (Mill.)) associated with the ectomycorrhizal fungi matt bolete (Xerocomus pruinatus (Fries 1835)) or bay bolete (X. badius (Fries 1818)) were analysed with respect to the occurrence of dihydrolipoyl dehydrogenase (EC allozymes. In root tissues of the two deciduous trees, two gene loci could be visualized after cellulose acetate electrophoresis while three loci were expressed in root tissues of the two coniferous species. The two fungal species and further ectomycorrhizal fungi expressed exclusively one dihydrolipoyl dehydrogenase gene. In Xerocomus pruinatus and X. badius, the dihydrolipoyl dehydrogenase gene consists of 1460 bp and 1370 bp, respectively, including five introns each consisting of 52 bp. Their DNA sequences correspond to 70 to 90% to other fungal dihydrolipoyl dehydrogenase genes. One monomer of the dimeric dihydrolipoyl dehydrogenase enzyme consists of 486 (X. pruinatus) or 454 (X.
Drosophila muscleblind Codes for Proteins with One and Two Tandem Zinc Finger Motifs
Uwe Irion
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0034248
Abstract: Muscleblind-like proteins, Muscleblind (Mbl) in Drosophila and MBNL1-3 in vertebrates, are regulators of alternative splicing. Human MBNL1 is a key factor in the etiology of myotonic dystrophy (DM), a muscle wasting disease caused by the occurrence of toxic RNA molecules containing CUG/CCUG repeats. MBNL1 binds to these RNAs and is sequestered in nuclear foci preventing it from exerting its normal function, which ultimately leads to mis-spliced mRNAs, a major cause of the disease. Muscleblind-proteins bind to RNAs via N-terminal zinc fingers of the Cys3-His type. These zinc fingers are arranged in one (invertebrates) or two (vertebrates) tandem zinc finger (TZF) motifs with both fingers targeting GC steps in the RNA molecule. Here I show that mbl genes in Drosophila and in other insects also encode proteins with two TZF motifs, highly similar to vertebrate MBNL proteins. In Drosophila the different protein isoforms have overlapping but possibly divergent functions in vivo, evident by their unequal capacities to rescue the splicing defects observed in mbl mutant embryos. In addition, using whole transcriptome analysis, I identified several new splicing targets for Mbl in Drosophila embryos. Two of these novel targets, kkv (krotzkopf-verkehrt, coding for Chitin Synthase 1) and cora (coracle, coding for the Drosophila homolog of Protein 4.1), are not muscle-specific but expressed mainly in epidermal cells, indicating a function for mbl not only in muscles and the nervous system.
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