Search Results - (Author, Cooperation:M. Kretz)
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1Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-05-18Publisher: Institute of Physics Publishing (IOP)Electronic ISSN: 1748-0221Topics: PhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressMoreno, C., Vilas-Varela, M., Kretz, B., Garcia-Lekue, A., Costache, M. V., Paradinas, M., Panighel, M., Ceballos, G., Valenzuela, S. O., Pena, D., Mugarza, A.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-04-13Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyGeosciencesComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Chemistry, Materials SciencePublished by: -
3Latest Papers from Table of Contents or Articles in PressM. Kretz ; Z. Siprashvili ; C. Chu ; D. E. Webster ; A. Zehnder ; K. Qu ; C. S. Lee ; R. J. Flockhart ; A. F. Groff ; J. Chow ; D. Johnston ; G. E. Kim ; R. C. Spitale ; R. A. Flynn ; G. X. Zheng ; S. Aiyer ; A. Raj ; J. L. Rinn ; H. Y. Chang ; P. A. Khavari
Nature Publishing Group (NPG)
Published 2012Staff ViewPublication Date: 2012-12-04Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Base Sequence ; Cell Differentiation/*genetics ; Cells, Cultured ; Cytoskeletal Proteins/metabolism ; Epidermis/*cytology/*metabolism ; Gene Expression Regulation ; High-Throughput Screening Assays ; Humans ; Keratinocytes ; Mutation ; Nucleotide Motifs/genetics ; Protein Binding ; RNA Stability/genetics ; RNA, Long Noncoding/*genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; RNA-Binding Proteins/metabolism ; Skin Diseases/geneticsPublished by: -
4Articles: DFG German National LicensesStaff View
ISSN: 1432-1785Source: Springer Online Journal Archives 1860-2000Topics: MathematicsNotes: Abstract Let G be a finite undirected graph without loops and multiple edges. A graph is called “unterringfrei”, if there is no induced subgraph being a cycle of length⩾4. This note shows that the chromatic polynomial of such a graph does only have positive integers as its roots. Conversely all polynomials with only positive integral roots are the chromatic polynomials of such graphs under the slight restriction that M(G;α)=0 implies that M(G;β)=0 for α〉β⩾0.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 0887-6266Keywords: Chemistry ; Polymer and Materials ScienceSource: Wiley InterScience Backfile Collection 1832-2000Topics: Chemistry and PharmacologyPhysicsNotes: Polytetramethylene oxide with a planar zig-zag structure similar to polyethylene can be obtained with narrow molecular weight distributions. The plastic deformation of samples differing in molecular weight, molecular weight distribution, crystallinity, and structure has been studied. The degree of crystallinity of the undeformed annealed samples, as studied by NMR and DSC, leads to a value of the enthalpy of melting ΔHm = 167 J g-1, supporting the lower of two previously reported values. The low natural draw ratios and low Young's modulus of the drawn samples, together with the effect of blending a small amount of high molecular weight material into a low molecular weight sample, highlight the role of the flexibility and of the high molecular weight tail of the distribution in the plastic deformation process. The stress required for the propagation of the neck and the tensile strength are found to be linear functions of, respectively, the natural and maximum draw ratio.Additional Material: 7 Ill.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 0887-6266Keywords: Chemistry ; Polymer and Materials ScienceSource: Wiley InterScience Backfile Collection 1832-2000Topics: Chemistry and PharmacologyPhysicsNotes: The orientation of the crystalline and amorphous phases in uniaxially drawn samples of polytetramethylene oxide has been studied by x-ray and NMR methods. Pole figure measurements give the orientation of the crystalline phase. Its dependence on the draw ratio does not obey the pseudoaffine model. The crystalline fraction is derived from NMR measurements at temperatures between Tg and Tm, where the free induction decay (FID) of the unoriented sample can be analyzed in terms of a rigid (crystalline), a constrained, and an amorphous phase. Low temperature (T 〈 Tg) measurements of the NMR second-moment anisotropy in protonated and deuterated samples give a mean orientation of the chains higher than that corresponding to the crystalline phase. The lack of anisotropy in the tail of the FID at temperatures between Tg and Tm indicates no appreciable anisotropy in the truly amorphous interlamellar phase. From this and from the ratio of the P4/P2 orientations, factors which obey the “most probable distribution,” it is concluded that the amorphous orientation is due to the layer of constrained chains at the surface of the lamellae.Additional Material: 11 Ill.Type of Medium: Electronic ResourceURL: