25 results on '"single core"'
Search Results
2. Assessment of dielectric strength and partial discharges patterns in nanocomposites insulation of single-core power cables.
- Author
-
Thabet, Ahmed and Fouad, M.
- Subjects
NANOPARTICLES ,DIELECTRICS ,PARTIAL discharges ,ELECTRIC discharges ,NANOCOMPOSITE materials - Abstract
Nanoparticles succeeded to enhance the dielectric properties of industrial insulation but the presence of voids inside the power cable insulation still leads to formation high electrical stress inside power cable insulation material and collapse. In this paper, the dielectric strength of new design nanocomposites has been deduced as experimental work done to clarify the benefit of filling nanoparticles with different patterns inside dielectrics. Also, it has been studied the effect of electrical stress distribution in presence of air, water and copper impurities with different shapes (cylinder, sphere and ellipse) inside insulation of single core. In simulation model, it has been used finite element method (FEM) for estimating the electrostatic field distribution in power cable insulation. It has been applied new strategies of nanotechnology techniques for designing innovative polyvinyl chloride insulation materials by using nanocomposites and multi-nanocomposites. Finally, this research succeeded to remedy different partial discharges (PD) patterns according to using certain types and concentrations of nanoparticles. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
3. Assessment of dielectric strength and partial discharges patterns in nanocomposites insulation of single-core power cables
- Author
-
Ahmed Thabet and M. Fouad
- Subjects
partial discharges ,dielectric strength ,single core ,cables ,fem ,nanocomposites ,nanoparticles ,Electricity ,QC501-721 - Abstract
Nanoparticles succeeded to enhance the dielectric properties of industrial insulation but the presence of voids inside the power cable insulation still leads to formation high electrical stress inside power cable insulation material and collapse. In this paper, the dielectric strength of new design nanocomposites has been deduced as experimental work done to clarify the benefit of filling nanoparticles with different patterns inside dielectrics. Also, it has been studied the effect of electrical stress distribution in presence of air, water and copper impurities with different shapes (cylinder, sphere and ellipse) inside insulation of single core. In simulation model, it has been used finite element method (FEM) for estimating the electrostatic field distribution in power cable insulation. It has been applied new strategies of nanotechnology techniques for designing innovative polyvinyl chloride insulation materials by using nanocomposites and multi-nanocomposites. Finally, this research succeeded to remedy different partial discharges (PD) patterns according to using certain types and concentrations of nanoparticles.
- Published
- 2021
- Full Text
- View/download PDF
4. Design and implementation of dual-core MIPS processor for LU decomposition based on FPGA.
- Author
-
Khalil, Rusul Saad and Omran, Safaa S.
- Subjects
MULTICORE processors ,MATRIX decomposition ,MATRIX inversion ,TELECOMMUNICATION systems ,FIELD programmable gate arrays - Abstract
Many systems like the control systems and in communication systems, there is usually a demand for matrix inversion solution. This solution requires many operations, which makes it not possible or very hard to meet the needs for real-time constraints. Methods were exists to solve this kind of problems, one of these methods by using the LU decomposition of matrix which is a good alterative to matrix inversion. The LU matrices are two matrices, the L matrix, which is a lower triangular matrix, and the U matrix, which is an upper triangular matrix. In this paper, a design of dual-core processor is used as the hardware of the work and contain software was written to enable the two cores of the dual-core processor to work simultaneously in computing the value of the L matrix and U matrix. The result of this work are compared with other works that using single-core processor, and the results found that the time required in the cores of the dual-core is more less than using single-core. The designed dual-core processor is invoked using the VHDL language. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
5. Magnetic Nanoparticle Systems for Nanomedicine--A Materials Science Perspective.
- Author
-
Socoliuc, Vlad, Peddis, Davide, Petrenko, Viktor I., Avdeev, Mikhail V., Susan-Resiga, Daniela, Szabó, Tamas, Turcu, Rodica, Tombácz, Etelka, and Vékás, Ladislau
- Subjects
IRON oxide nanoparticles ,NANOMEDICINE ,MATERIALS science ,MAGNETIC moments ,SOLUBILITY - Abstract
Iron oxide nanoparticles are the basic components of the most promising magneto-responsive systems for nanomedicine, ranging from drug delivery and imaging to hyperthermia cancer treatment, as well as to rapid point-of-care diagnostic systems with magnetic nanoparticles. Advanced synthesis procedures of single- and multi-core iron-oxide nanoparticles with high magnetic moment and well-defined size and shape, being designed to simultaneously fulfill multiple biomedical functionalities, have been thoroughly evaluated. The review summarizes recent results in manufacturing novel magnetic nanoparticle systems, as well as the use of proper characterization methods that are relevant to the magneto-responsive nature, size range, surface chemistry, structuring behavior, and exploitation conditions of magnetic nanosystems. These refer to particle size, size distribution and aggregation characteristics, zeta potential/surface charge, surface coating, functionalization and catalytic activity, morphology (shape, surface area, surface topology, crystallinity), solubility and stability (e.g., solubility in biological fluids, stability on storage), as well as to DC and AC magnetic properties, particle agglomerates formation, and flow behavior under applied magnetic field (magnetorheology). [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
6. From Single-Core Nanoparticles in Ferrofluids to Multi-Core Magnetic Nanocomposites: Assembly Strategies, Structure, and Magnetic Behavior
- Author
-
Theodora Krasia-Christoforou, Vlad Socoliuc, Kenneth D. Knudsen, Etelka Tombácz, Rodica Turcu, and Ladislau Vékás
- Subjects
magnetic nanoparticle systems ,ferrofluids ,magnetic fluids ,single core ,multi-core ,clusters ,Chemistry ,QD1-999 - Abstract
Iron oxide nanoparticles are the basic components of the most promising magnetoresponsive nanoparticle systems for medical (diagnosis and therapy) and bio-related applications. Multi-core iron oxide nanoparticles with a high magnetic moment and well-defined size, shape, and functional coating are designed to fulfill the specific requirements of various biomedical applications, such as contrast agents, heating mediators, drug targeting, or magnetic bioseparation. This review article summarizes recent results in manufacturing multi-core magnetic nanoparticle (MNP) systems emphasizing the synthesis procedures, starting from ferrofluids (with single-core MNPs) as primary materials in various assembly methods to obtain multi-core magnetic particles. The synthesis and functionalization will be followed by the results of advanced physicochemical, structural, and magnetic characterization of multi-core particles, as well as single- and multi-core particle size distribution, morphology, internal structure, agglomerate formation processes, and constant and variable field magnetic properties. The review provides a comprehensive insight into the controlled synthesis and advanced structural and magnetic characterization of multi-core magnetic composites envisaged for nanomedicine and biotechnology.
- Published
- 2020
- Full Text
- View/download PDF
7. Magnetic Nanoparticle Systems for Nanomedicine—A Materials Science Perspective
- Author
-
Vlad Socoliuc, Davide Peddis, Viktor I. Petrenko, Mikhail V. Avdeev, Daniela Susan-Resiga, Tamas Szabó, Rodica Turcu, Etelka Tombácz, and Ladislau Vékás
- Subjects
magnetic nanoparticle systems ,bio-ferrofluids ,nanomedicine ,single core ,multi-core ,synthesis ,functional coating ,physical-chemical properties ,structural characterization ,magnetorheology ,Chemistry ,QD1-999 - Abstract
Iron oxide nanoparticles are the basic components of the most promising magneto-responsive systems for nanomedicine, ranging from drug delivery and imaging to hyperthermia cancer treatment, as well as to rapid point-of-care diagnostic systems with magnetic nanoparticles. Advanced synthesis procedures of single- and multi-core iron-oxide nanoparticles with high magnetic moment and well-defined size and shape, being designed to simultaneously fulfill multiple biomedical functionalities, have been thoroughly evaluated. The review summarizes recent results in manufacturing novel magnetic nanoparticle systems, as well as the use of proper characterization methods that are relevant to the magneto-responsive nature, size range, surface chemistry, structuring behavior, and exploitation conditions of magnetic nanosystems. These refer to particle size, size distribution and aggregation characteristics, zeta potential/surface charge, surface coating, functionalization and catalytic activity, morphology (shape, surface area, surface topology, crystallinity), solubility and stability (e.g., solubility in biological fluids, stability on storage), as well as to DC and AC magnetic properties, particle agglomerates formation, and flow behavior under applied magnetic field (magnetorheology).
- Published
- 2020
- Full Text
- View/download PDF
8. Solving a DLP with Auxiliary Input with the ρ-Algorithm
- Author
-
Sakemi, Yumi, Izu, Tetsuya, Takenaka, Masahiko, Yasuda, Masaya, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Jung, Souhwan, editor, and Yung, Moti, editor
- Published
- 2012
- Full Text
- View/download PDF
9. Polymer/Iron Oxide Nanoparticle Composites—A Straight Forward and Scalable Synthesis Approach
- Author
-
Jens Sommertune, Abhilash Sugunan, Anwar Ahniyaz, Rebecca Stjernberg Bejhed, Anna Sarwe, Christer Johansson, Christoph Balceris, Frank Ludwig, Oliver Posth, and Andrea Fornara
- Subjects
iron oxide nanoparticle ,multi core ,single core ,nanocomposite ,polymer encapsulation ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Magnetic nanoparticle systems can be divided into single-core nanoparticles (with only one magnetic core per particle) and magnetic multi-core nanoparticles (with several magnetic cores per particle). Here, we report multi-core nanoparticle synthesis based on a controlled precipitation process within a well-defined oil in water emulsion to trap the superparamagnetic iron oxide nanoparticles (SPION) in a range of polymer matrices of choice, such as poly(styrene), poly(lactid acid), poly(methyl methacrylate), and poly(caprolactone). Multi-core particles were obtained within the Z-average size range of 130 to 340 nm. With the aim to combine the fast room temperature magnetic relaxation of small individual cores with high magnetization of the ensemble of SPIONs, we used small (
- Published
- 2015
- Full Text
- View/download PDF
10. NIC-Assisted Cache-Efficient Receive Stack for Message Passing over Ethernet
- Author
-
Goglin, Brice, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Sips, Henk, editor, Epema, Dick, editor, and Lin, Hai-Xiang, editor
- Published
- 2009
- Full Text
- View/download PDF
11. Evaluation of Different Multithreaded and Multicore Processor Configurations for SoPC
- Author
-
Uhrig, Sascha, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Bertels, Koen, editor, Dimopoulos, Nikitas, editor, Silvano, Cristina, editor, and Wong, Stephan, editor
- Published
- 2009
- Full Text
- View/download PDF
12. An Effective Modeling of Single Cores Prostheses Using Geometric Techniques
- Author
-
Yoo, Kwan-Hee, Ha, Jong Sung, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Bubak, Marian, editor, van Albada, Geert Dick, editor, Sloot, Peter M. A., editor, and Dongarra, Jack, editor
- Published
- 2004
- Full Text
- View/download PDF
13. High Tensile Bi-2223 Ag-MgO Sheathed Oxide Superconductor
- Author
-
Yamada, Y., Onoda, H., Yamamoto, K., Murase, S., Horigami, O., Koizumi, T., Hasegawa, T., Kumakura, H., and Summers, Leonard T., editor
- Published
- 1997
- Full Text
- View/download PDF
14. The Influence of Diagenetic Processes on the Exchange of Trace Contaminants at the Sediment-Water Interface
- Author
-
Petersen, W., Wallmann, K., Li, P., Schroeder, F., Knauth, H.-D., Allan, R., editor, Förstner, U., editor, Salomons, W., editor, and Calmano, W., editor
- Published
- 1996
- Full Text
- View/download PDF
15. Design and implementation of dual-core MIPS processor for LU decomposition based on FPGA
- Author
-
Safaa S. Omran and Rusul Khalil Saad
- Subjects
LU decomposition ,MIPS processor ,General Computer Science ,Computer science ,020208 electrical & electronic engineering ,Single core ,Triangular matrix ,MathematicsofComputing_NUMERICALANALYSIS ,Field programmable gate array ,02 engineering and technology ,020202 computer hardware & architecture ,law.invention ,Computational science ,Matrix (mathematics) ,law ,0202 electrical engineering, electronic engineering, information engineering ,Dual core ,VHDL ,Electrical and Electronic Engineering ,Field-programmable gate array - Abstract
Many systems like the control systems and in communication systems, there is usually a demand for matrix inversion solution. This solution requires many operations, which makes it not possible or very hard to meet the needs for real-time constraints. Methods were exists to solve this kind of problems, one of these methods by using the LU decomposition of matrix which is a good alternative to matrix inversion. The LU matrices are two matrices, the L matrix, which is a lower triangular matrix, and the U matrix, which is an upper triangular matrix. In this paper, a design of dual-core processor is used as the hardware of the work and certain software was written to enable the two cores of the dual-core processor to work simultaneously in computing the value of the L matrix and U matrix. The result of this work are compared with other works that using single-core processor, and the results found that the time required in the cores of the dual-core is more less than using single-core. The designed dual-core processor is invoked using the VHDL language.
- Published
- 2021
16. Polymer/Iron Oxide Nanoparticle Composites--A Straight Forward and Scalable Synthesis Approach.
- Author
-
Sommertune, Jens, Sugunan, Abhilash, Ahniyaz, Anwar, Bejhed, Rebecca Stjernberg, Sarwe, Anna, Johansson, Christer, Balceris, Christoph, Ludwig, Frank, Posth, Oliver, and Fornara, Andrea
- Subjects
- *
BIOMACROMOLECULES , *MAGNETIC nanoparticles , *ESTERS , *IRON oxides , *METHYL methacrylate , *AIR pollutants , *CHEMICAL synthesis - Abstract
Magnetic nanoparticle systems can be divided into single-core nanoparticles (with only one magnetic core per particle) and magnetic multi-core nanoparticles (with several magnetic cores per particle). Here, we report multi-core nanoparticle synthesis based on a controlled precipitation process within a well-defined oil in water emulsion to trap the superparamagnetic iron oxide nanoparticles (SPION) in a range of polymer matrices of choice, such as poly(styrene), poly(lactid acid), poly(methyl methacrylate), and poly(caprolactone). Multi-core particles were obtained within the Z-average size range of 130 to 340 nm. With the aim to combine the fast room temperature magnetic relaxation of small individual cores with high magnetization of the ensemble of SPIONs, we used small (<10 nm) core nanoparticles. The performed synthesis is highly flexible with respect to the choice of polymer and SPION loading and gives rise to multi-core particles with interesting magnetic properties and magnetic resonance imaging (MRI) contrast efficacy. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
17. Thermal effect on the output transmission of single-core fiber Comb filter.
- Author
-
Islam, M.S. and Mohammad, A.B.
- Subjects
- *
COMB filters , *OPTICAL fibers , *THERMAL properties , *TEMPERATURE effect , *OPTICAL sensors , *WAVELENGTHS - Abstract
We propose and experimentally demonstrate switchable and tunable transmission characteristics of a single-core comb filter based on thermal operation. Its temperature characteristics are investigated to reveal a shift in the peak wavelength position from 0.15 to 0.41 nm/°C and a tunable range of wavelength spacing of 1.18–1.38 nm for maximum and minimum effective lengths, respectively. This configuration provides the unique advantages of an all-fiber structure, tunable wavelength spacing, switchable spectral peaks, independent tuning of the center wavelength and wavelength spacing of the spectral peaks, and low polarization sensitivity. It is relatively simple to fabricate and is expected to have applications in temperature fiber optic sensors and multiwavelength fiber laser sources. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
18. Improving the Performance of Single Core Processor using FPGA's.
- Author
-
Satyanarayana, M. S., M., Aruna T., and G. N., Divya Raj
- Subjects
COMPUTER input-output equipment ,COMPUTER software development ,CENTRAL processing units ,COMPUTER architecture ,FIELD programmable gate arrays ,INFORMATION technology industry - Abstract
Multicore Architecture is a Buzz Word in IT Industry. Multicore made revolutionary changes in the Field of Hardware. Though there is no much usage of newly introduced architectures as we are still using sequential programs for developing software's. But the changes made people to go with new architectures though they are not able to use them completely. In this paper we are going to introduce a mechanism where the single core architecture CPU can be migrated by using FPGAs to cope up with the performance of Multicore Architecture CPU's. The main advantage of this mechanism is that instead of buying Multicore architectures CPU one can use existing CPU with additional functionalities as per their needs. Intern it will make normal users to use existing hardware instead of going for advanced architectures. The main advantage of this mechanism is reducing the cost of hardware instead of buying whenever there is a new version in the market. As per Moore's Law the Number of Transistors on chip will increase every 18 months. Which will make manufacturing companies to release new hardware might not be for 18 months at least for 24 months once. Because of which the users in Developing countries like India are facing problems in buying new hardware on Yearly Basis. [ABSTRACT FROM AUTHOR]
- Published
- 2017
19. Seismic Response of Structure with Single Core
- Author
-
Belsare Sumit Bandopanth and Dilip Budhlani
- Subjects
Shear walls ,Single Core ,Outriggers ,Civil Engineering ,FOS: Civil engineering - Abstract
Shear walls and outriggers have been used so far to resist the seismic waves of earthquake and heavy winds actions. The complete failure of the structures that has occurred in the past due to catastrophic earthquake may be avoided with the use of shear wall in the structure. The study is concerned with the use of shear wall as a single core in structure that will resist the seismic waves of earthquake. In the present study analysis of RCC building has been carried out by changing the locations of shear walls in the building. The seismic analysis performed is linear dynamic response spectrum analysis using the well known analysis and design software ETABS 16.2.0. Seismic performance of the building has been investigated based on parameters such as strorey drift, base shear and storey displacement. Belsare Sumit Bandopanth | Dilip Budhlani "Seismic Response of Structure with Single Core" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-3 , April 2020, URL: https://www.ijtsrd.com/papers/ijtsrd30851.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/30851/seismic-response-of-structure-with-single-core/belsare-sumit-bandopanth
- Published
- 2020
- Full Text
- View/download PDF
20. Magnetic Nanoparticle Systems for Nanomedicine—A Materials Science Perspective
- Author
-
Davide Peddis, Ladislau Vekas, Daniela Susan-Resiga, Etelka Tombácz, Tamás Szabó, Rodica Turcu, Vlad Socoliuc, Mikhail V. Avdeev, and Viktor I. Petrenko
- Subjects
Materials science ,synthesis ,magnetic nanoparticle systems ,Nanoparticle ,Nanotechnology ,lcsh:Chemistry ,chemistry.chemical_compound ,multi-core ,Materials Chemistry ,bio-ferrofluids ,Surface charge ,magnetorheology ,functional coating ,equipment and supplies ,nanomedicine ,physical-chemical properties ,Electronic, Optical and Magnetic Materials ,structural characterization ,single core ,Surface coating ,chemistry ,lcsh:QD1-999 ,Chemistry (miscellaneous) ,magnetic nanoparticle systems, bio-ferrofluids, nanomedicine, single core, multi-core, synthesis, functional coating, physical-chemical properties, structural characterization, magnetorheology ,Magnetic nanoparticles ,Surface modification ,Nanomedicine ,Particle size ,human activities ,Iron oxide nanoparticles - Abstract
Iron oxide nanoparticles are the basic components of the most promising magneto-responsive systems for nanomedicine, ranging from drug delivery and imaging to hyperthermia cancer treatment, as well as to rapid point-of-care diagnostic systems with magnetic nanoparticles. Advanced synthesis procedures of single- and multi-core iron-oxide nanoparticles with high magnetic moment and well-defined size and shape, being designed to simultaneously fulfill multiple biomedical functionalities, have been thoroughly evaluated. The review summarizes recent results in manufacturing novel magnetic nanoparticle systems, as well as the use of proper characterization methods that are relevant to the magneto-responsive nature, size range, surface chemistry, structuring behavior, and exploitation conditions of magnetic nanosystems. These refer to particle size, size distribution and aggregation characteristics, zeta potential/surface charge, surface coating, functionalization and catalytic activity, morphology (shape, surface area, surface topology, crystallinity), solubility and stability (e.g., solubility in biological fluids, stability on storage), as well as to DC and AC magnetic properties, particle agglomerates formation, and flow behavior under applied magnetic field (magnetorheology).
- Published
- 2020
21. From single-core nanoparticles in ferrofluids to multi-core magnetic nanocomposites: Assembly strategies, structure, and magnetic behavior
- Author
-
Ladislau Vekas, Rodica Turcu, Etelka Tombácz, Kenneth D. Knudsen, Vlad Socoliuc, and Theodora Krasia-Christoforou
- Subjects
Ferrofluid ,Materials science ,synthesis ,magnetic fluids ,General Chemical Engineering ,magnetic nanoparticle systems ,Nanoparticle ,Nanotechnology ,ferrofluids ,Review ,lcsh:Chemistry ,chemistry.chemical_compound ,small-angle scattering techniques ,multi-core ,General Materials Science ,clusters ,Nanocomposite ,Magnetic moment ,functional coating ,equipment and supplies ,nanomedicine ,Characterization (materials science) ,structural characterization ,single core ,chemistry ,lcsh:QD1-999 ,Nanomedicine ,Magnetic nanoparticles ,physical–chemical properties ,magnetic characterization ,human activities ,Iron oxide nanoparticles ,biotechnology - Abstract
Iron oxide nanoparticles are the basic components of the most promising magnetoresponsive nanoparticle systems for medical (diagnosis and therapy) and bio-related applications. Multi-core iron oxide nanoparticles with a high magnetic moment and well-defined size, shape, and functional coating are designed to fulfill the specific requirements of various biomedical applications, such as contrast agents, heating mediators, drug targeting, or magnetic bioseparation. This review article summarizes recent results in manufacturing multi-core magnetic nanoparticle (MNP) systems emphasizing the synthesis procedures, starting from ferrofluids (with single-core MNPs) as primary materials in various assembly methods to obtain multi-core magnetic particles. The synthesis and functionalization will be followed by the results of advanced physicochemical, structural, and magnetic characterization of multi-core particles, as well as single- and multi-core particle size distribution, morphology, internal structure, agglomerate formation processes, and constant and variable field magnetic properties. The review provides a comprehensive insight into the controlled synthesis and advanced structural and magnetic characterization of multi-core magnetic composites envisaged for nanomedicine and biotechnology.
- Published
- 2020
22. From Single-Core Nanoparticles in Ferrofluids to Multi-Core Magnetic Nanocomposites: Assembly Strategies, Structure, and Magnetic Behavior.
- Author
-
Krasia-Christoforou, Theodora, Socoliuc, Vlad, Knudsen, Kenneth D., Tombácz, Etelka, Turcu, Rodica, and Vékás, Ladislau
- Subjects
- *
MAGNETIC fluids , *IRON oxide nanoparticles , *NANOCOMPOSITE materials , *MAGNETIC fields , *PARTICLE size distribution , *MAGNETIC particles - Abstract
Iron oxide nanoparticles are the basic components of the most promising magnetoresponsive nanoparticle systems for medical (diagnosis and therapy) and bio-related applications. Multi-core iron oxide nanoparticles with a high magnetic moment and well-defined size, shape, and functional coating are designed to fulfill the specific requirements of various biomedical applications, such as contrast agents, heating mediators, drug targeting, or magnetic bioseparation. This review article summarizes recent results in manufacturing multi-core magnetic nanoparticle (MNP) systems emphasizing the synthesis procedures, starting from ferrofluids (with single-core MNPs) as primary materials in various assembly methods to obtain multi-core magnetic particles. The synthesis and functionalization will be followed by the results of advanced physicochemical, structural, and magnetic characterization of multi-core particles, as well as single- and multi-core particle size distribution, morphology, internal structure, agglomerate formation processes, and constant and variable field magnetic properties. The review provides a comprehensive insight into the controlled synthesis and advanced structural and magnetic characterization of multi-core magnetic composites envisaged for nanomedicine and biotechnology. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
23. Energy-aware scheduling for real-time systems: A survey
- Author
-
Hakan Aydin, Mauro Marinoni, Mario Bambagini, and Giorgio Buttazzo
- Subjects
Computer science ,Real-time computing ,Single core ,Idle ,02 engineering and technology ,Dynamic power management ,Dynamic voltage and frequency scaling ,Software ,Taxonomy (general) ,Low power ,0202 electrical engineering, electronic engineering, information engineering ,Uniprocessor system ,Frequency scaling ,Multi-core processor ,Energy ,business.industry ,Real-time scheduling ,020206 networking & telecommunications ,Energy consumption ,020202 computer hardware & architecture ,Multicore ,Hardware and Architecture ,Power ,Sleep ,Single-core ,business ,Energy (signal processing) - Abstract
This article presents a survey of energy-aware scheduling algorithms proposed for real-time systems. The analysis presents the main results starting from the middle 1990s until today, showing how the proposed solutions evolved to address the evolution of the platform's features and needs. The survey first presents a taxonomy to classify the existing approaches for uniprocessor systems, distinguishing them according to the technology exploited for reducing energy consumption, that is, Dynamic Voltage and Frequency Scaling (DVFS), Dynamic Power Management (DPM), or both. Then, the survey discusses the approaches proposed in the literature to deal with the additional problems related to the evolution of computing platforms toward multicore architectures.
- Published
- 2016
24. Polymer/Iron Oxide Nanoparticle Composites-A Straight Forward and Scalable Synthesis Approach
- Author
-
Abhilash Sugunan, Oliver Posth, Rebecca Stjernberg Bejhed, Anwar Ahniyaz, Christer Johansson, Christoph Balceris, Frank Ludwig, Andrea Fornara, Anna Sarwe, and Jens Sommertune
- Subjects
Nanoteknik ,Polymers ,Nanoparticle ,02 engineering and technology ,01 natural sciences ,Ferric Compounds ,lcsh:Chemistry ,Magnetite Nanoparticles ,lcsh:QH301-705.5 ,Spectroscopy ,chemistry.chemical_classification ,nanocomposite ,Biochemistry and Molecular Biology ,General Medicine ,Polymer ,021001 nanoscience & nanotechnology ,polymer encapsulation ,Magnetic Resonance Imaging ,Computer Science Applications ,Nano Technology ,0210 nano-technology ,Materials science ,Nanotechnology ,010402 general chemistry ,Catalysis ,Article ,Inorganic Chemistry ,Magnetization ,multi core ,iron oxide nanoparticle ,Physical and Theoretical Chemistry ,Particle Size ,Molecular Biology ,Nanocomposite ,Organic Chemistry ,Kemi ,equipment and supplies ,0104 chemical sciences ,single core ,chemistry ,Magnetic core ,Chemical engineering ,lcsh:Biology (General) ,lcsh:QD1-999 ,Chemical Sciences ,Magnetic nanoparticles ,Particle ,Particle size ,human activities ,Biokemi och molekylärbiologi - Abstract
Magnetic nanoparticle systems can be divided into single-core nanoparticles (with only one magnetic core per particle) and magnetic multi-core nanoparticles (with several magnetic cores per particle). Here, we report multi-core nanoparticle synthesis based on a controlled precipitation process within a well-defined oil in water emulsion to trap the superparamagnetic iron oxide nanoparticles (SPION) in a range of polymer matrices of choice, such as poly(styrene), poly(lactid acid), poly(methyl methacrylate), and poly(caprolactone). Multi-core particles were obtained within the Z-average size range of 130 to 340 nm. With the aim to combine the fast room temperature magnetic relaxation of small individual cores with high magnetization of the ensemble of SPIONs, we used small (<, 10 nm) core nanoparticles. The performed synthesis is highly flexible with respect to the choice of polymer and SPION loading and gives rise to multi-core particles with interesting magnetic properties and magnetic resonance imaging (MRI) contrast efficacy.
- Published
- 2015
25. Optimum Microarchitectures for Neuromorphic Algorithms
- Author
-
Wang, Shu
- Subjects
- Electrical Engineering, neuromorphic, HMAX, Izhikevich, single core, multicore
- Abstract
At present there is a strong interest in the research community to develop large scale implementations of neuromorphic algorithms. These systems consume significant amounts of power, area, and are very expensive to build. This thesis examines the design space of multicore processors for accelerating neuromorphic algorithms. A new multicore chip will enable more efficient design of large scale neuromorphic computing systems. The algorithms examined in this thesis are the HMAX and Izhikevich models. HMAX was developed recently at MIT to model the visual system of the human brain. The Izhikevich model was presented by Izhikevich as a biologically accurate spiking neuron model. This thesis also examines the parallelization of the HMAX model for studying multicore architectures. The results show the best single core architectures for HMAX and Izhikevich are almost same, though HMAX needs more cache. The multicore study shows that the off chip memory bus width and physical memory latency could improve the performance of the multicore system.
- Published
- 2011
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