Trends in analytical separations of magnetic (nano)particles

2019 ◽  
Vol 114 ◽  
pp. 89-97 ◽  
Author(s):  
Mónica N. Alves ◽  
Manuel Miró ◽  
Michael C. Breadmore ◽  
Mirek Macka
Keyword(s):  
Nano Particles ◽  
Analytical Separations ◽  
Magnetic Nano Particles

ON-LINE CHARACTERIZATION OF MAGNETIC NANO PARTICLES - SIMULATION VERSUS EXPERIMENT

2001 ◽  
Vol 32 ◽  
pp. 385-386
Author(s):  
TH. KAUFFELDT ◽  
E. KAUFFELDT ◽  
T. ZARUTSKAYA ◽  
M. SHAPIRO ◽  
A. SCHMIDT-OTT
Keyword(s):  
Nano Particles ◽  
On Line ◽  
Magnetic Nano Particles

Comparative study of three magnetic nano-particles (FeSO4, FeSO4/SiO2, FeSO4/SiO2/TiO2) in plasmid DNA extraction

2016 ◽  
Vol 513 ◽  
pp. 68-76 ◽  
Author(s):  
H. Rahnama ◽  
A. Sattarzadeh ◽  
F. Kazemi ◽  
N. Ahmadi ◽  
F. Sanjarian ◽  
...  
Keyword(s):  
Comparative Study ◽  
Dna Extraction ◽  
Plasmid Dna ◽  
Nano Particles ◽  
Magnetic Nano Particles

Effects of Fe3O4 Nano Particles Addition in High Temperature Superconductor YBa2Cu3O7-δ

2012 ◽  
Vol 501 ◽  
pp. 309-313 ◽  
Author(s):  
Siti Nurdalila Abd-Ghani ◽  
Roslan Abd-Shukor ◽  
Wei Kong
Keyword(s):  
Transport Properties ◽  
Solid State Reaction Method ◽  
Nano Particles ◽  
Magnetic Impurities ◽  
Oxide Powders ◽  
Nano Fe3o4 ◽  
Activated Flux ◽  
Average Size ◽  
Increasing Temperature ◽  
Magnetic Nano Particles

The effects of nano particles Fe3O4 addition on the superconducting and transport properties of YBa2Cu3O7-δ (YBCO) were studied. YBa2Cu3O7-δ superconductor powders were prepared by using high purity oxide powders via solid state reaction method. Nano Fe3O4 with 0.01 – 0.05 wt.% with average size 28 nm was added into YBCO. The transition temperatures (Tc) of the samples were measured by using four point probe method. The critical current (Ic) of the samples has been determined by using the 1 μV/cm criterion from 30 – 77 K. Sample with 0.02 wt.% nano Fe3O4 showed the highest Tc at 87 K. It is interesting to note the same sample also exhibited the highest Jc at 77 K up to 1683 mA/cm2. Nano Fe3O4 has acted as effective flux pinning centers in YBCO. A small amount of nano particles Fe3O4 addition has successfully improved the superconducting and transport properties of YBCO. The excessive addition of nano Fe3O4 (> 0.02 wt.%) suppressed the Tc and Jc. Overall, Jc decreases with increasing temperature (30 – 77 K) as a consequence of thermally activated flux creep. Magnetic impurities normally suppress superconductivity. However, by adding magnetic nano particles, current carrying capacity of superconductors YBCO was enhanced significantly.

Parameters Control for Properties of Ferrofluid Used in Series Ferrofluid Sensor

2012 ◽  
Vol 248 ◽  
pp. 594-598
Author(s):  
Gang Zhao ◽  
Hai Rong Cui ◽  
Qiu Li Ding ◽  
Xu Feng Wang ◽  
Shi Xi Tian ◽  
...  
Keyword(s):  
Magnetization Curve ◽  
Ph Value ◽  
Nano Particles ◽  
Molar Ratio ◽  
Magnetic Intensity ◽  
Iron Ion ◽  
Ferrous Chloride ◽  
Bivalent Iron ◽  
In Series ◽  
Magnetic Nano Particles

Series ferrofluid based sensors are novel sensors which use ferrofluid as inductive core to measure signals. The physical properties of ferrofluid affect mostly on performance parameter of these series sensors. There is several generality regularity for ferrofluid appliedd in series sensors. This paper analyses the generality of parameter controlling for properties of ferrofluid used in series ferrofluid sensors. The working area of magnetization curve of ferrofluid used in series sensors should be in its linear area where the permeability of ferrofluid is considered as a constant. The magnetic nano-particles generally obtained by reaction of ferrous chloride and ferric chloride. With the increment of viscosity and density of ferrofluid, the saturation magnetic intensity of ferrofluid increases. The concentration of reacted solution is better to be 0.6mol/L. Saturation magnet intensity of magnetic nano-partcles is highest as the molar ratio of trivalent iron ion to bivalent iron ion is equal to 1.75. The reacted temperature is better between 65~80°C while PH value of solution is in a weak alkaline state.

scholarly journals In-Vivo and Fast Examination of Iron Concentration of Magnetic Nano-Particles in an Animal Torso via Scanning SQUID Biosusceptometry

2011 ◽  
Vol 21 (3) ◽  
pp. 2250-2253 ◽  
Author(s):  
W. K. Tseng ◽  
J. J. Chieh ◽  
S. Y. Yang ◽  
H. E. Horng ◽  
C. Y. Hong ◽  
...  
Keyword(s):  
Iron Concentration ◽  
Nano Particles ◽  
Scanning Squid ◽  
Magnetic Nano Particles

Oncological Study of Thin Layers of Imatinib Molecule Nanostructure for Chronic Myelogenous Leukemia (CML), Acute Lymphocytic Leukemia (ALL), Philadelphia Chromosome-Positive (Ph+), Gastrointestinal Stromal Tumors (GIST), Hypereosinophilic Syndrome (HES), Chronic Eosinophilic Leukemia (CEL), Systemic Mastocytosis and Myelodysplastic Syndrome Treatment

2020 ◽  
Vol 12 (6) ◽  
pp. 753-760
Author(s):  
Alireza Heidari
Keyword(s):  
Temperature Distribution ◽  
Normal Tissue ◽  
Hypereosinophilic Syndrome ◽  
Thin Layers ◽  
Myelogenous Leukemia ◽  
Nano Particles ◽  
Maximum Temperature ◽  
Hyperthermia Treatment ◽  
Wave Source ◽  
Magnetic Nano Particles

The interest in exploring more effective methods for cancer treatment has increased widely in recent years. In clinical studies it is difficult to determine the temperature distribution in both normal tissue and in tumor during hyperthermia treatment since temperature can be measured in limited number of positions in tissue or tumor. Simulation studies can play crucial role in physician's perception of the temperature distribution in tissue. Hyperthermia treatment is facing some unsolved problems such as the appropriate dosage of magnetic Nano particles required to achieve the optimum temperature which results in apoptosis in tumor cells. In this study, a 2D computational model is created in COMSOL Metaphysics in order to analyze temperature distribution in both normal tissue and tumor during hyperthermia treatment using various dosages of magnetic Nano particles. Temperature distribution is achieved by considering various layers from wave source through to the tumor and also by taking into account the amount of heat generated through the Brownian rotation and the Neel relaxation. Simulations of a spherical tumor located in ellipse tissue were designed. A systematical variation in dosage has been performed. Temperature distribution and maximum temperature in steady state and effect of the dosage of Nano particles.

Sign in / Sign up

Export Citation Format

Share Document