Results 61 to 70 of about 1,709 (182)
Design of CTAB‐Coated NixFe3−xO4 Magnetic Nanoparticles as Magnetic Particle Imaging (MPI) Tracers
Particle &Particle Systems Characterization, Volume 42, Issue 9, September 2025.The present work is conducted to study synthesized NixFe3−xO4 MNPs (with x = from 0 to 1.0) coated with CTAB with hydrothermal and coprecipitation methods for the medical imaging systems as a tracer agent. In vitro, the biocompatibility of samples has been approved using an MTT assay.
Nurcan Dogan +6 more
wiley +1 more source
Metal-substituted protein MRI contrast agents engineered for enhanced relaxivity and ligand sensitivity [PDF]
, 2010 Engineered metalloproteins constitute a flexible new class of analyte-sensitive molecular imaging agents detectable by magnetic resonance imaging (MRI), but their contrast effects are generally weaker than synthetic agents.
Alan Jasanoff +21 more
core +2 more sources
Dual modal imaging agents based on chromophore-bearing DTPA analogues [PDF]
, 2017 Two new DTPA analogues, centrally (L1) and terminally (L2) functionalised with a 1,8-naphthalimide chromophore, have been successfully prepared and fully characterized.
Amoroso, Angelo J. +3 more
core +1 more source
Construction of a Plate Relaxometer for Measurement of Viscoelasticity of Polymer Melt
The Journal of the Society of Chemical Industry, Japan, 1968 高分子溶融物の低弾性率にわたる応力緩和を測定する目的で,平板式応力緩和計(Plate Relaxometer)を試作した。測定原理は箱形のセル中の試料の中心にプレートをさしこみ, セルに瞬間的に一定の変位を与えて, プレートに発生するずり応力の時間的変化を測定するものである。装置の形状効果の消去できる条件を検討し, 緩和弾性率より他の粘弾性関数を評価し, 独立な方法により求めた実測値との比較を行なった。本装置によれば107dyne/cm2付近から102dyne/cm2付近にわたる緩和弾性率の測定が可能である。
Mitsuyoshi FUJIYAMA +2 more
openaire +2 more sources
Exploring Bioinspired Ln3+ Complexes for Cu2+ Detection: Design and Efficacy as MRI Contrast Agents
European Journal of Inorganic Chemistry, Volume 28, Issue 13, May 21, 2025.Gd3+ complexes bearing a bioinspired Cu2+‐binding site derived from ATCUN are studied as MRI contrast agents. The presence of two amino acids (GH) is necessary to bind Cu2+ and trigger a relaxivity increase. This is due to a higher number of H2O retained close to Gd3+ through H‐bonding with Cu2+. Remarkably, the system remains selective for Cu2+ vs Zn2+
Martina Sanadar +7 more
wiley +1 more source
Uniform Penalty inversion of two-dimensional NMR Relaxation data
, 2016 The inversion of two-dimensional NMR data is an ill-posed problem related to the numerical computation of the inverse Laplace transform. In this paper we present the 2DUPEN algorithm that extends the Uniform Penalty (UPEN) algorithm [Borgia, Brown ...
Bortolotti, V. +4 more
core +1 more source
Nature of water-biochar interface interactions [PDF]
, 2013 A poplar biochar obtained by an industrial gasification process was saturated with water and analyzed using fast field cycling (FFC) NMR relaxometry in a temperature range between 299 and 353 K.
Alhaique +25 more
core +1 more source
Chemistry – A European Journal, Volume 31, Issue 14, March 6, 2025.An original paramagnetic probe was developed, whose Magnetic Resonance Imaging efficacy is modified upon Zn2+ complexation. A combination of NMR, DFT and luminescence studies shows that these changes are due to a modification of the Gd3+ coordination sphere. The complex exhibits high selectivity for Zn2+ over other physiological cations.
Harlei Martin +6 more
wiley +1 more source
Wood‐Biochar Influence on Rill Erosion Processes and Hydrological Connectivity in Amended Soils
Hydrological Processes, Volume 39, Issue 2, February 2025.Plot measurements were performed on two rills, named rill3 and rill5, incised in a soil amended with an initial biochar concentration BC by weight of 3% and 5%, respectively. Nuclear magnetic resonance (NMR) relaxometry with the fast field cycling (FFC) layout was used to measure the structural and functional connectivity of the soil, biochar, and ...
Pellegrino Conte +5 more
wiley +1 more source
Paramagnetic salt and agarose recipes for phantoms with desired T1 and T2 values for low‐field MRI
NMR in Biomedicine, Volume 38, Issue 1, January 2025.Recipes that use agarose mixed with one of four paramagnetic salts are developed (NiCl2 shown here), which can be used to create synthetic samples for field strengths below 0.55 T. The recipes' utility is demonstrated by targeting relaxation properties of five neurological tissues for fields ranging between 0.0065 and 0.55 T.
Kalina V. Jordanova +18 more
wiley +1 more source