Search Results
Results 1 - 50 of 1454
1 2 3 4 5 6 7 8 9 10 >
Zhang Yu Y Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, - - 2014
Lactobacillus rhamnosus is a well-known lactic acid bacterium (LAB), but a new ZY strain was isolated for the first time from commercial probiotic powder recently. Although many studies have focused on developing cost-effective media for the production of LAB, the de Man, Rogosa and Sharpe (MRS) medium is still the ...
Sagynbaeva Myskal M Condensed Matter Theory Group, Materials Theory Division, Department of Physics and Astronomy, Uppsala University, PO Box 530, SE-75121, Uppsala, Sweden. Talas State University, Talas, 722720, - - 2014
Using density functional theory (DFT), we report the modulated electronic and magnetic properties of MoS2 nanoribbon by passivating the ribbon edges with H and C separately. For the modeled symmetric MoS2 nanoribbon with a zig-zag type edge, one side is terminated at Mo and the other side is terminated at ...
Wen Shihui S State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai, 201620, China; College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, - - 2014
Long-circulating multifunctional Gd(III)-loaded multiwalled carbon nanotubes (MWCNTs) modified with polyethylene glycol are designed and synthesized. The formed MWCNTs are water-dispersible, stable, and have good cytocompatibility and antifouling property. With the low r 2 /r 1 relaxivity ratio and relatively long blood circulation time, the multifunctional MWCNTs are able to be ...
Galbusera Fabio - - 2014
Abstract A numerical method based on contrast-enhanced MRI to predict the transport properties of spinal structures is presented and used for a population of 32 low back pain patients. Sixty-eight one-dimensional finite element models aimed to replicate the transport of Gd-HP-DO3A were developed, one for each intervertebral disc was investigated. ...
Svitova A L AL Leibniz-Institute for Solid State and Materials Research (IFW Dresden), D-01171 Dresden, Germany. y.krupskaya@ifw-dresden.de - - 2014
The magnetic properties of nitride clusterfullerenes GdxSc3-xN@C80 (x = 1-3) are studied as a function of the number of Gd atoms in the cluster. The intracluster interaction of the Gd ions in Gd2ScN@C80 and Gd3N@C80 is ferromagnetic with exchange constants of -1.2 K ± 0.1 K and -0.6 K ± ...
Zabow Gary G Laboratory of Functional and Molecular Imaging, NINDS, National Institutes of Health, Bethesda, MD, 20892, USA; Electromagnetics Division, Physical Measurement Laboratory, National Institute of Standards and Technology, Boulder, CO, 80305, - - 2014
A simple new approach for transforming micro- and nanoscale spheres into eccentric ellipsoids and for generating hollow ellipsoidal shell particles is demonstrated based on a rotating, angled, evaporative deposition process. The resulting ellipsoidal shells possess unique electromagnetic field properties that enable a new form of multispectral labeling agent for magnetic ...
Koay Eugene J - - 2014
Background. The therapeutic resistance of pancreatic ductal adenocarcinoma (PDAC) is partly ascribed to ineffective delivery of chemotherapy to cancer cells. We hypothesized that physical properties at vascular, extracellular, and cellular scales influence delivery of and response to gemcitabine-based therapy. Methods. We developed a method to measure mass transport properties during ...
Zeng Jianfeng J Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing, 100190, - - 2014
The effect of the anchoring group of surface ligands on the magnetic properties, especially relaxometric properties, of PEGylated Fe3 O4 nanoparticles are investigated. Systematic experimental results together with in-depth theoretical analysis reveal that the ligand binding affinity can largely vary the saturation magnetization, while conjugated anchoring groups can remarkably enhance ...
Guillou François F Fundamental Aspects of Materials and Energy (FAME), Delft University of Technology, Mekelweg 15, 2629, JB, Delft, The - - 2014
Large magnetically driven temperature changes are observed in MnFe(P,Si,B) materials simultaneously with large entropy changes, limited (thermal or magnetic) hysteresis, and good mechanical stability. The partial substitution of B for P in MnFe(P,Si) compounds is found to be an ideal parameter to control the latent heat observed at the Curie ...
Winklhofer Sebastian S From the *Department of Forensic Medicine and Radiology, Institute of Forensic Medicine, †Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich; ‡Department of Forensic Physics and Ballistics, Institute of Forensic Medicine, University of Bern; and §Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital Bern, Bern, - - 2014
The objective of this study was to assess the discriminative power of dual-energy computed tomography (DECT) versus single-energy CT (SECT) to distinguish between ferromagnetic and non-ferromagnetic ballistic projectiles to improve safety regarding magnetic resonance (MR) imaging studies in patients with retained projectiles. Twenty-seven ballistic projectiles including 25 bullets (diameter, 3-15 ...
Brecher Christian - - 2014
Abstract This paper shows the development of a new magnetic resonance imaging (MRI)-compatible guide wire made from fiber-reinforced plastics. The basic material of the developed guide wire is manufactured using a specially developed micro-pullwinding technology, which allows the adjustment of tensile, bending, and torsional stiffness independent from each other. Additionally, ...
Cervetti Christian C Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-70550, Stuttgart, Germany. - - 2014
We discuss current developments in the synthesis and characterization of magnetic nanohybrids made of molecular magnets and nanostructured materials. We first review several novel approaches that have recently been attempted to combine magnetic coordination complexes with differently-obtained inorganic systems. Special focus is placed on how the altered environment can affect ...
Gianolio E E Dipartimento di Biotecnologie Molecolari e Scienze per la Salute, Università degli Studi di Torino, Via Nizza 52, 10126, Turin, TO, - - 2014
The aim of this study is to describe the synthesis of, relaxometric characterization of, pharmacokinetic properties of, and animal imaging experiments with a new, low molecular weight gadolinium complex with high binding affinity toward serum albumin. The gadolinium(III) chelate (B25716/1) is based on the structure of the heptadentate ligand 1,4-bis(hydroxycarbonylmethyl)-6-[bis(hydroxycarbonylmethyl)]amino-6 ...
Ball D K DK Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf e.V., Bautzner Landstraße 400, D-01328 Dresden, Germany. Technische Universität Dresden, D-01062 Dresden, - - 2014
We report on the effect of microstructure and geometrically induced modifications of the magnetic properties of granular CoCrPt:SiO2 films with weakly interacting magnetic grains deposited on pre-structured GaSb nanocone templates fabricated by an ion erosion technique. By tuning the irradiation conditions, nanocone patterns of different cone sizes were prepared (from ...
Wang Haibo H College of Physics and Information Science, Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of the Ministry of Education, Hunan Normal University, Changsha, Hunan, China. - - 2014
In this paper, multi-functional hexagonal phase NaErF4:Yb nanorods were synthesized by a facile hydrothermal method. The upconversion luminescence (UCL) intensity and red to green ratio of the multi-functional NaErF4 nanorods can be improved by Yb(3+) doping. More importantly, owing to the decreased distance of Er and Yb, the significant enhancement ...
Pouponneau Pierre P NanoRobotics Laboratory, Department of Computer and Software Engineering and Institute of Biomedical Engineering, Ecole Polytechnique de Montréal (EPM), C.P. 6079, Succ. Centre-ville, Montreal, QC, H3C 3A7, - - 2014
This review paper describes the past, present and future design of therapeutic magnetic carriers (TMMC) being guided in the vascular network using a novel technique known as magnetic resonance navigation (MRN). This targeting method is an extension of magnetic resonance imaging (MRI) technologies. MRN, based on magnetic gradient variation, aims ...
Chittiboina Prashant P Surgical Neurology Branch, National Institute of Neurological Disorders and - - 2014
Object Coinfused surrogate imaging tracers can provide direct insight into the properties of convection-enhanced delivery (CED) in the nervous system. To better understand the distributive properties of CED in a clinical circumstance, the authors analyzed the imaging findings in pediatric diffuse intrinsic pontine glioma (DIPG) patients undergoing coinfusion of Gd-DTPA ...
Jesche A A The Ames Laboratory, Iowa State University, Ames, Iowa 50011, - - 2014
Large magnetic anisotropy and coercivity are key properties of functional magnetic materials and are generally associated with rare earth elements. Here we show an extreme, uniaxial magnetic anisotropy and the emergence of magnetic hysteresis in Li2(Li1-xFex)N. An extrapolated, magnetic anisotropy field of 220 T and a coercivity field of over 11 T ...
Taniguchi Takuya T Radiology Department, Murakami Memorial Hospital, Asahi - - 2014
Plaque imaging using computed tomography (CT) is an important diagnostic method for predicting the risk of vascular events. However, the CT value variability of plaques, which depends on the scan parameters, remains a key challenge. The aim of this study was to evaluate the effect of reconstruction properties on the ...
Li Hui-Zhe HZ Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, - - 2013
With the increased usage of magnetic resonance imaging (MRI) as a diagnostic tool in clinic, the currently-used metals for vascular stents, such as 316L stainless steel (SS), Co-Cr alloys and Ni-Ti alloys, are challenged by their unsatisfactory MRI compatibility, due to their constituents containing ferromagnetic elements. To provide more MRI ...
Joswig Jan-Ole JO Physical Chemistry, TU Dresden , 01062 Dresden, - - 2013
Dislocations at grain boundaries in semiconducting two-dimensional transition-metal dichalcogenides have been found to be the origin of substantial intrinsic magnetic moments. Here, we introduce a first-principles study by Yakobson and co-workers, published in this issue of ACS Nano that shows the influence of grain-boundary tilt angle and doping level on ...
Dai Xiaoyan X Division of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, P. R. China, 200233; Nano Biomedical Research Center, School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, P. R. China, - - 2013
Magnetic nanoparticles (MNPs) are important carriers in immunoassays. In this study, we investigated the influence of the physical and chemical properties of MNPs on their performance in a detection process. A comparative study of the properties of two MNPs with sizes of 200nm and 1μm (MNP-200nm and MNP-1μm, respectively) was ...
Biercevicz Alison M AM Department of Orthopaedics, Warren Alpert Medical School, Brown University/Rhode Island Hospital, Providence, Rhode - - 2013
Our objective was to develop a non-invasive magnetic resonance (MR) method to predict the structural properties of a healing anterior cruciate ligament (ACL) using volume and T2 * relaxation time. We also compared our T2 *-based structural property prediction model to a previous model utilizing signal intensity, an acquisition-dependent variable. ...
Shevtsov Maxim A - - 2013
BackgroundSuperparamagnetic iron oxide nanoparticles (SPIONs), due to their unique magnetic properties, have the ability to function both as magnetic resonance (MR) contrast agents, and can be used for thermotherapy. SPIONs conjugated to the heat shock protein Hsp70 that selectively binds to the CD40 receptor present on glioma cells, could be ...
Xie Taiping - - 2013
The magnetic composite BiOCl-SrFe12O19, a novel p-n type heterojunction was synthesized by hydrolysis with a medium temperature sintering method. The microstructure and magnetic properties of the prepared material were characterized by FTIR, XRD, SEM, TEM, HRTEM, SAED, and VSM. The results showed the [001] facet of BiOCl with high photocatalytic ...
Ogura Akio - - 2013
To evaluate the properties of plaque by the use of magnetic resonance imaging (MRI), it is necessary to use a material with stable signal intensity (eg, muscle or submandibular gland) as a reference. However, there may be differences between individuals. Therefore, we used a small phantom set on the circumference of ...
Rakic Srdjan - - 2013
OBJECTIVE. This article analyzes radiopaque properties of meshes currently used in hernia surgery. A search was conducted using PubMed and a combination of the terms "hernia repair," "mesh," "laparoscopy," "CT," "MRI," "radiopaque," and "high-resolution techniques." CONCLUSION. The visibility of meshes varies from not visible at all (e.g., Ultrapro), to hardly ...
Choudhury Paramita Kar - - 2013
The magnetic properties of carbon nanotube encapsulated nickel nanowires (C.E. nanowires of diameter to approximately 10 nm), and its comparison to other forms of Ni are carried out in this work. The saturation magnetization (Ms) and coercivity (Hc) for C.E. nanowires are 1.0 emu/g and 230 Oe. The temperature dependence ...
Wang Jun-Ting - - 2013
By feeding the silkworms with the nano Fe3O4 powder together with mulberry leaves, we directly obtained silkworm spun pristine magnetic silk fiber, MSF. To compare with the normal SF found that this MSF not only has expected magnetic properties, but also has enhanced thermal stability and mechanical properties, e.g. stress ...
Ullmann Jeremy F P - - 2013
In this study, we explored the use of super-resolution track-density imaging (TDI) for neuroanatomical characterization of the adult zebrafish brain. We compared the quality of image contrast and resolution obtained with T2* magnetic resonance imaging (MRI), diffusion tensor-based imaging (DTI), TDI, and histology. The anatomical structures visualized in 5 μm TDI ...
Wang Qin Q Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR - - 2014
Magnetic microspheres, 2-hydroxypropyltrimethyl ammonium chloride chitosan/Fe3O4/halloysite nanotubes/ofloxacin (HACC/Fe3O4/HNTs/OFL), for the controlled release of OFL were prepared by in situ crosslinking with glutaraldehyde in the spray-drying process. The magnetic microspheres were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis and a magnetometer. Various parameters influencing the encapsulation efficiency, ...
Soares Filipe - - 2013
Dynamic contrast-enhanced magnetic resonance (DCE-MR) of the breast is especially robust for the diagnosis of cancer in high-risk women due to its high sensitivity. Its specificity may be, however, compromised since several benign masses take up contrast agent as malignant lesions do. In this paper, we propose a novel method ...
Zeng Deqian - - 2013
A facile nonaqueous injection method has been developed for the construction of one-dimensional nanostructure consisting of a magnetic alloy (Ni-Cu) core and a plasmonic alloy (Au-Cu) shell. The obtained Ni-Cu@Au-Cu nanowires exhibit tunable optical and magnetic properties.
Thomassin-Naggara I - - 2013
Perfusion MRI of the female pelvis is based on a T1-weighted imaging acquired repeatedly at high temporal resolution. Post-processing can be carried out either from a visual analysis, by description of the curves or by compartmental modeling. Many studies have shown this method to be useful in detecting cervical cancers ...
Singh Abhalaxmi - - 2013
Multifunctional nanoplatforms represent a cutting edge tool in biomedical applications as a result of their applicability in the concurrent monitoring of medical treatment. Magnetic nanoparticles (MNPs) have generated great interest in the field of cancer nanotheranostics owing to their intrinsic magnetic property that enables them to be used as contrast ...
König Sonja N - - 2013
Ab initio calculations on the octahedral dysprosium aluminate complex [Dy(AlMe4)3] () predict weak SMM properties. Dynamic magnetic susceptibility measurements on confirm the theoretical predictions, revealing fast relaxation of the magnetization via quantum tunnelling.
Yan Kai - - 2013
Stable and cytocompatible hybrid PEGylated micelles with multimodal imaging capabilities are described. The F3O4-encapsulated polymeric micelles composed of cores containing magnetic nanoparticles and polyethylene glycol (PEG) shells are synthesized by self-assembly of amphiphilic poly(HFMA-co-VBK)-g-PEG copolymers and oleic acid stabilized Fe3O4 nanoparticles. The Fe3O4 magnetic nanoparticles in the core produce T2-weighted ...
Meaney Paul M - - 2013
Purpose: Breast magnetic resonance imaging is highly sensitive but not very specific for the detection of breast cancer. Opportunities exist to supplement the image acquisition with a more specific modality provided the technical challenges of meeting space limitations inside the bore, restricted breast access, and electromagnetic compatibility requirements can be ...
Mahajan Kalpesh D - - 2013
Quantum dots (QDs) have great promise in biological imaging, and as this promise is realized, there has been increasing interest in combining the benefits of QDs with those of other materials to yield composites with multifunctional properties. One of the most common materials combined with QDs is magnetic materials, either ...
Brandão Sofia - - 2013
This article reviews the current role of magnetic resonance imaging in the study of the pelvic floor anatomy and pelvic floor dysfunction. The application of static and dynamic magnetic resonance imaging in the clinical context and for biomechanical simulation modeling is assessed, and the main findings are summarized. Additionally, magnetic ...
Salas Gorka - - 2013
Abstract The final goal in magnetic hyperthermia research is to use nanoparticles in the form of a colloidal suspension injected into human beings for a therapeutic application. Therefore the challenge is not only to develop magnetic nanoparticles with good heating capacities, but also with good colloidal properties, long blood circulation ...
Dorożyński Przemysław - - 2013
The aim of the study is to present the concept of novel method for fast screening of enteric coating compositions properties without the need of preparation of tablets batches for fluid bed coating. Proposed method involves evaluation of enteric coated model tablets in specially designed testing cell with application of ...
Hakky Michael - - 2013
OBJECTIVE. This article outlines artifactual findings commonly encountered in neuroradiologic MRI studies and offers clues to differentiate them from true pathology on the basis of their physical properties. Basic MR physics concepts are used to shed light on the causes of these artifacts. CONCLUSION. MRI is one of the most ...
Kwon Tack-Kyun - - 2013
This study aimed to demonstrate the radiological properties of hyaluronic acid (HA) and calcium hydroxylapatite (CAHA) on serial computed tomography (CT) and positron emission tomography (PET) scan. Retrospective Case Series. Retrospective chart and imaging analysis of patients who underwent HA or CAHA injection laryngoplasty. Total of 243 patients who underwent ...
Yamamoto Shinpei - - 2013
The thermal stability of α''-Fe16N2, which attracts much interest because of its superior magnetic properties featuring a large magnetocrystalline anisotropy (Ku ∼ 1 × 10(7) erg cm(-3)) and a large saturation magnetization (Ms ∼ 234 emu g(-1)), though unfortunately thermally unstable, has been quantitatively studied.
Belik Alexei A - - 2013
Phase transitions and detailed magnetic properties of polycrystalline AP-YVO3.00(1) (prepared at ambient pressure by a conventional solid-state method) and polycrystalline HP-YVO3.04(1) and HP-YVO3.05(1) (AP-YVO3 treated at 6 GPa and 1600 K during 130 and 15 min, respectively) were investigated. The three samples showed a remarkable exchange bias (EB) effect. HP-YVO3.04 ...
Kim Hee Kyung HK Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, MLC 5031, Cincinnati, OH 45229, USA. - - 2013
This review describes various quantitative magnetic resonance imaging techniques that can be used to objectively analyze the composition (T2 relaxation time mapping, Dixon imaging, and diffusion-weighted imaging), architecture (diffusion tensor imaging), mechanical properties (magnetic resonance elastography), and function (magnetic resonance spectroscopy) of normal and pathologic skeletal muscle in the pediatric ...
Naka T - - 2013
We report comprehensive measurements of the magnetic, transport, and thermal properties of the Heusler-type compound Fe2+xV1-xAl, with x values near the ferromagnetic quantum critical point, xc ∼ 0.05. At T ∼ 60 K, a prominent Schottky-like anomaly appeared in the specific heat; this anomaly was correlated with a smaller pseudo-gap formation in magnetic susceptibility, magnetoresistance, ...
McGarry Matthew - - 2013
Tissue displacements required for mechanical property reconstruction in magnetic resonance elastography (MRE) are acquired in an MRI scanner, therefore, anatomical information is available from other imaging sequences. Despite its availability, few attempts to incorporate prior spatial information in the MRE reconstruction process have been reported. This paper implements and evaluates ...
Pei Yanling - - 2013
A new type of one-dimensional bifunctional CNTs/Fe3O4 @ SiO2 (FITC) nanohybrids with both magnetic and fluorescent properties were fabricated by a polyol method combined with stöber method. The CNTs/Fe3O4 @ SiO2 (FITC) nanohybrids exhibit strong and stable photoluminescence emission at about 520 nm, display superparamagenetic behavior with high saturation magnetization ...
1 2 3 4 5 6 7 8 9 10 >