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Small-angle X-ray scattering (SAXS) off parallel,cylindrical, well-defined nanopores: from random pore distribution to highly ordered samples 总被引:1,自引:0,他引:1
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The lightest supersymmetric particle (LSP) is a natural candidate for the cold dark matter of the universe. In this Letter we discuss how to test the mechanism responsible for the LSP stability at the LHC. We note that if R-parity is conserved dynamically one should expect a Higgs boson which decays mainly into two right-handed neutrinos (a “leptonic” Higgs) or into two sfermions. The first case could exhibit spectacular lepton number violating signals with four secondary vertices due to the long-lived nature of right-handed neutrinos. These signals, together with the standard channels for the discovery of SUSY, could help to establish the underlying theory at the TeV scale. 相似文献
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Marijke WA de Backer Maike AD Brans Mieneke CM Luijendijk Keith M Garner Dianne MA van den Heuvel R Jeroen Pasterkamp Roger AH Adan 《BMC neuroscience》2010,11(1):94
Background
Multiple neuropeptides, sometimes with opposing functions, can be produced from one precursor gene. To study the roles of the different neuropeptides encoded by one large precursor we developed a method to overexpress minigenes and establish local secretion. 相似文献116.
Aim of this work is to obtain a convenient data set for the validation of a recently developed three-dimensional constitutive muscle model. Therefore, an optical measurement technique is used to reconstruct a geometrical model of a rabbit soleus muscle. Thus, the muscle geometry and also the generated force characteristics are measured. The proposed numerical model is able to reproduce the experimental results in an adequate manner. (© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
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Maike Lettow Kim Greis Eike Mucha Tyler R. Lambeth Murat Yaman Vasilis Kontodimas Christian Manz Waldemar Hoffmann Gerard Meijer Ryan R. Julian Gert von Helden Mateusz Marianski Kevin Pagel 《Angewandte Chemie (International ed. in English)》2023,62(24):e202302883
Fucose is a signaling carbohydrate that is attached at the end of glycan processing. It is involved in a range of processes, such as the selectin-dependent leukocyte adhesion or pathogen-receptor interactions. Mass-spectrometric techniques, which are commonly used to determine the structure of glycans, frequently show fucose-containing chimeric fragments that obfuscate the analysis. The rearrangement leading to these fragments—often referred to as fucose migration—has been known for more than 25 years, but the chemical identity of the rearrangement product remains unclear. In this work, we combine ion-mobility spectrometry, radical-directed dissociation mass spectrometry, cryogenic IR spectroscopy of ions, and density-functional theory calculations to deduce the product of the rearrangement in the model trisaccharides Lewis x and blood group H2. The structural search yields the fucose moiety attached to the galactose with an α(1→6) glycosidic bond as the most likely product. 相似文献