scholarly journals Synthesis, Characterization and Stabilization Analysis of Ferrofluid Based on Amazon Vegetable Copaifera O. L. Oil

2021 ◽  
Vol 9 (7) ◽  
pp. 208-213
Author(s):  
Laffert Gomes Ferreira da Silva ◽  
Tiago Aparício Salgado Beleza ◽  
Judes Gonçalves dos Santos ◽  
Luciene Batista da Silveira
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Magnetic Nanoparticles ◽  
Physical Properties ◽  
Alkaline Solution ◽  
Fe3o4 Nanoparticles ◽  
Temporal Analysis ◽  
Magnetic Separations ◽  
Natural Components ◽  
The Stability

The Nanoscience and Nanobiotechnology develops several researches using nanostructures with magnetic properties. These nanostructures can have different physical properties depending on their composition and therefore can be used in various applications such as: drug markers and carriers, microelectronics, magnetic separations and environmental applications. Furthermore, the use of natural components in the synthesis of these nanostructures may come to complement these nanomaterials due to their underexplored properties and their renewable origin. This research will aim to carry out a pre-study to analyze the stability of magnetic fluids based on Fe3O4 nanoparticles functionalized with vegetable oil from the Copaifera SPP plant, known as Copaiba. Therefore, the Fe3O4 nanoparticles will be synthesized by the coprecipitation method by hydrolysis in an alkaline solution. Ferrofluid will be prepared by dispersing magnetic nanoparticles, at different concentrations, in the “in natura” oil. For the samples characterization measurements were taken of: UV-vis, FTIR, NIR spectrophotometry, XRD and Magnetic Susceptibility, the temporal analysis was recorded periodically, observing the possible stability of the samples. This work reports that the ferrofluid showed good stability and the magnetic properties associated with the nanoparticles the properties of the Amazon oil used.

scholarly journals Single Crystal Growth and Physical Properties of Pyroxene CoGeO3

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 378
Author(s):  
Li Zhao ◽  
Zhiwei Hu ◽  
Hanjie Guo ◽  
Christoph Geibel ◽  
Hong-Ji Lin ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Crystal Growth ◽  
Physical Properties ◽  
Single Crystal ◽  
Single Crystals ◽  
Magnetic Moments ◽  
Single Crystal Growth ◽  
The Impact

We report on the synthesis and physical properties of cm-sized CoGeO3 single crystals grown in a high pressure mirror furnace at pressures of 80 bar. Direction dependent magnetic susceptibility measurements on our single crystals reveal highly anisotropic magnetic properties that we attribute to the impact of strong single ion anisotropy appearing in this system with TN∼33.5 K. Furthermore, we observe effective magnetic moments that are exceeding the spin only values of the Co ions, which reveals the presence of sizable orbital moments in CoGeO3.

BSA-coated magnetic nanoparticles for improved therapeutic properties

2015 ◽  
Vol 3 (30) ◽  
pp. 6239-6247 ◽  
Author(s):  
Antonio Aires ◽  
Sandra M. Ocampo ◽  
David Cabrera ◽  
Leonor de la Cueva ◽  
Gorka Salas ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Cellular Uptake ◽  
Physiological Conditions ◽  
Therapeutic Properties ◽  
The Stability

Albumin coating improves the stability of magnetic nanoparticles under physiological conditions, favoring their magnetic properties, cellular uptake, and chemotherapeutic effects.

Magnesium Trisilicate Coated Fe3O4 Nanoparticles as Prompt and Efficient Lactic Acid Removers Potential for Exercise-Induce Fatigue Prevention

2020 ◽  
Vol 16 (4) ◽  
pp. 531-537
Author(s):  
Xiao Huang ◽  
Wenhong Wang ◽  
Xi Zheng ◽  
Xuefei Zhang ◽  
Zhuying Wang
Keyword(s):  
Magnetic Properties ◽  
Lactic Acid ◽  
Magnetic Nanoparticles ◽  
Fe3o4 Nanoparticles ◽  
Magnesium Trisilicate ◽  
Sport Injuries ◽  
Potential Toxicity ◽  
Intensive Exercise ◽  
Good Biocompatibility ◽  
Exercise Induced

Exercise-induced fatigue is accumulated when lactic acid cannot be timely eliminated after intensive exercise, resulting in sport injuries. Traditional lactic acid removal methods are limited in timeliness, metabolic burden, and potential toxicity. To solve the thorny problems, in this study, nanomedicine was introduced for lactic acid removal. Magnesium trisilicate was coated on the surface of magnetic nanoparticles. These nanoparticles exhibited a prompt and efficient lactic acid adsorbing behavior. Moreover, they have favorable magnetic properties and good biocompatibility. The results showed that the prepared nanoparticles hold great potential in the removal of lactic acid for preventing exercise-induced fatigue.

Spin–lattice correlation in Eu3+ doped antiferromagnet TmFeO3

2019 ◽  
Vol 21 (35) ◽  
pp. 19181-19191
Author(s):  
Poorva Sharma ◽  
Arvind Yogi ◽  
Ashwini Kumar ◽  
Rubin Li ◽  
Gaurav Sharma ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Raman Scattering ◽  
Physical Properties ◽  
Absorption Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray ◽  
Spin Lattice ◽  
X Ray Absorption ◽  
Strong Spin

We report the physical properties of Eu-doped bulk TmFeO3 through XRD, magnetic susceptibility, Raman scattering and X-ray absorption spectroscopy study. Eu3+ doping at Tm-site influence the magnetic properties through strong spin–lattice correlations in TmFeO3.

ARMCO DI-MAX NONORIENTED ELECTRICAL STEELS

Alloy Digest ◽  
1999 ◽  
Vol 48 (1) ◽  
Keyword(s):  
Magnetic Properties ◽  
Physical Properties ◽  
Tensile Properties ◽  
Core Loss ◽  
Electrical Steels

Abstract Armco DI-MAX nonoriented electrical steels have practically identical magnetic properties in any direction of magnetism in the plane of the material. They have superior permeability at high inductions, low average core loss, good gage uniformity, excellent flatness, and a high stacking factor. This datasheet provides information on composition, physical properties, hardness, and tensile properties. Filing Code: FE-88. Producer or source: Armco Inc., Specialty Steels Division. Originally published April 1989, revised January 1999.

MAGNETIC PROPERTIES OF PSEUDO-BINARY Mn1−xFexSn2 ALLOYS

1993 ◽  
Vol 07 (01n03) ◽  
pp. 867-870 ◽  
Author(s):  
H. SHIRAISHI ◽  
T. HORI ◽  
Y. YAMAGUCHI ◽  
S. FUNAHASHI ◽  
K. KANEMATSU
Keyword(s):  
Field Theory ◽  
Phase Diagram ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
High Temperature ◽  
Magnetic Structure ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Molecular Field ◽  
Magnetic Phases

The magnetic susceptibility measurements have been made on antiferromagnetic compounds Mn1–xFexSn2 and the magnetic phase diagram was illustrated. The high temperature magnetic phases I and III, major phases, were analyzed on the basis of molecular field theory and explained the change of magnetic structure I⇌III occured at x≈0.8.

scholarly journals CLytA-DAAO Chimeric Enzyme Bound to Magnetic Nanoparticles. A New Therapeutical Approach for Cancer Patients?

2021 ◽  
Vol 22 (3) ◽  
pp. 1477
Author(s):  
María Fuentes-Baile ◽  
Elizabeth Pérez-Valenciano ◽  
Pilar García-Morales ◽  
Camino de Juan Romero ◽  
Daniel Bello-Gil ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Colorectal Carcinoma ◽  
Acid Oxidase ◽  
Oxygen Species ◽  
Cell Models ◽  
Amino Acid Oxidase ◽  
Direct Addition ◽  
Alginate Capsules ◽  
Anti Cancer ◽  
The Stability

D-amino acid oxidase (DAAO) is an enzyme that catalyzes the oxidation of D-amino acids generating H2O2. The enzymatic chimera formed by DAAO bound to the choline-binding domain of N-acetylmuramoyl-L-alanine amidase (CLytA) induces cytotoxicity in several pancreatic and colorectal carcinoma and glioblastoma cell models. In the current work, we determined whether the effect of CLytA-DAAO immobilized in magnetic nanoparticles, gold nanoparticles, and alginate capsules offered some advantages as compared to the free CLytA-DAAO. Results indicate that the immobilization of CLytA-DAAO in magnetic nanoparticles increases the stability of the enzyme, extending its time of action. Besides, we compared the effect induced by CLytA-DAAO with the direct addition of hydrogen peroxide, demonstrating that the progressive generation of reactive oxygen species by CLytA-DAAO is more effective in inducing cytotoxicity than the direct addition of H2O2. Furthermore, a pilot study has been initiated in biopsies obtained from pancreatic and colorectal carcinoma and glioblastoma patients to evaluate the expression of the main genes involved in resistance to CLytA-DAAO cytotoxicity. Based on our findings, we propose that CLytA-DAAO immobilized in magnetic nanoparticles could be effective in a high percentage of patients and, therefore, be used as an anti-cancer therapy for pancreatic and colorectal carcinoma and glioblastoma.

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