نتایج جستجو برای: paramagnetic

تعداد نتایج: 10535  

Journal: :Magnetic resonance in medicine 2010
Xiaowei Zhang Elaine L Bearer Adriana T Perles-Barbacaru Russell E Jacobs

Golgi impregnation is unique in its ability to display the dendritic trees and axons of large numbers of individual neurons by histology. Here we apply magnetic resonance microscopy to visualize the neuroanatomy of animal models by combining histologic fixation chemistry with paramagnetic contrast agents. Although there is some differential uptake of the standard small-molecular-weight contrast...

Journal: :Journal of the American Chemical Society 2012
Alfonso Zoleo Ronald G Lawler Xuegong Lei Yongjun Li Yasujiro Murata Koichi Komatsu Marilena Di Valentin Marco Ruzzi Nicholas J Turro

An endofulleropyrrolidine, with H2 as a guest, has been reduced to a paramagnetic endofulleride radical anion. The magnetic interaction between the electron delocalized on the fullerene cage and the guest H2 has been probed by pulsed ENDOR. The experimental hyperfine couplings between the electron and the H2 guest were measured, and their values agree very well with DFT calculations. This agree...

2013
Jie Meng Bo Xiao Yu Zhang Jian Liu Huadan Xue Jing Lei Hua Kong Yuguang Huang Zhengyu Jin Ning Gu Haiyan Xu

A novel nanofibrous composite scaffold composed of super-paramagnetic γ-Fe2O3 nanoparticles (MNP), hydroxyapatite nanoparticles (nHA) and poly lactide acid (PLA) was prepared using electrospinning technique. The scaffold well responds extern static magnetic field with typical saturation magnetization value of 0.049 emu/g as well as possesses nanofibrous architecture. The scaffolds were implante...

2015
M. Sathiya J.-B. Leriche E. Salager D. Gourier J.-M. Tarascon H. Vezin

Batteries for electrical storage are central to any future alternative energy paradigm. The ability to probe the redox mechanisms occurring at electrodes during their operation is essential to improve battery performances. Here we present the first report on Electron Paramagnetic Resonance operando spectroscopy and in situ imaging of a Li-ion battery using Li2Ru0.75Sn0.25O3, a high-capacity (>2...

Journal: :Chemistry of materials : a publication of the American Chemical Society 2007
Adam Winkleman Paul J Bracher Irina Gitlin George M Whitesides

This manuscript describes the fabrication and manipulation of millimeter-scale spheres fabricated from ionotropic hydrogels that are crosslinked with paramagnetic metal ions (e.g., Ho(3+)). These ionotropic hydrogels experience a force in a magnetic field gradient that correlates with the concentration of the paramagnetic cations crosslinking the polymer. In an externally applied magnetic field...

2011
Bernadeta Dobosz Kinga Drzewiecka Agnieszka Waskiewicz Lidia Irzykowska Jan Bocianowski Zbigniew Karolewski Marian Kostecki Zdzislaw Kruczynski Ryszard Krzyminiewski Zbigniew Weber Piotr Golinski

Electron paramagnetic resonance was used to monitor free radicals and paramagnetic species like Fe, Mn, Cu generation, stability and status in Asparagus officinalis infected by common pathogens Fusarium proliferatum and F. oxysporum. Occurrence of F. proliferatum and F. oxysporum, level of free radicals and other paramagnetic species, as well as salicylic acid and mycotoxins content in roots an...

2000
Chang-Hong Chien Estela Blaisten-Barojas Mark R. Pederson

The many-body potential for ferromagnetic and paramagnetic rhodium clusters proposed in this work has 11 parameters ~14 for the paramagnetic case! that are fitted on the energy surface of Rh2 through Rh6 clusters calculated from first principles within the generalized gradient approximation ~GGA! of density functional theory. Under this potential the most stable ferromagnetic and paramagnetic c...

2008
H. Xiao C. C. Almasan

Torque and magnetization measurements in magnetic fields H up to 14T were performed on CeCoIn5 single crystals. The amplitude of the paramagnetic torque shows an H dependence in the mixed state and an H dependence in the normal state. In addition, the mixedstate magnetizations for both H k c and H k ab axes show anomalous behavior after the subtraction of the corresponding paramagnetic contribu...

2002
G. Concas F. Congiu A. Geddo Lehmann C. Muntoni S. Sanna G. Spano

The magnetic susceptibility of the cluster compounds Mo6Se8 and Mo6Te8 has been measured at temperatures between 82 and 330 K, using a Faraday balance. The paramagnetic and diamagnetic components of the susceptibility have been analyzed. The Pauli component was evaluated using the density of states at the Fermi level obtained by band structure calculations, while the core component was evaluate...

Journal: :Molecules 2013
Evelyne Schrank Gabriel E Wagner Klaus Zangger

Many peptides and proteins are attached to or immersed in a biological membrane. In order to understand their function not only the structure but also their topology in the membrane is important. Solution NMR spectroscopy is one of the most often used approaches to determine the orientation and localization of membrane-bound peptides and proteins. Here we give an application-oriented overview o...

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