scholarly journals Power dissipation and heat production in bubble columns: Approach based on nonequilibrium thermodynamics

1980 ◽  
Vol 22 (11) ◽  
pp. 2399-2404 ◽  
Author(s):  
J. A. Roels ◽  
J. J. Heijnen
Keyword(s):  
Heat Production ◽  
Power Dissipation ◽  
Nonequilibrium Thermodynamics ◽  
Bubble Columns

scholarly journals Enhancing Magnetic Hyperthermia Nanoparticle Heating Efficiency with Non-Sinusoidal Alternating Magnetic Field Waveforms

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3240
Author(s):  
Michael Zeinoun ◽  
Javier Domingo-Diez ◽  
Miguel Rodriguez-Garcia ◽  
Oscar Garcia ◽  
Miroslav Vasic ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Nanoparticles ◽  
Heat Production ◽  
Power Dissipation ◽  
Magnetic Hyperthermia ◽  
Experimental Results ◽  
Production Performance ◽  
Alternating Magnetic Field ◽  
In Vivo Studies ◽  
Sinusoidal Signals

For decades now, conventional sinusoidal signals have been exclusively used in magnetic hyperthermia as the only alternating magnetic field waveform to excite magnetic nanoparticles. However, there are no theoretical nor experimental reasons that prevent the use of different waveforms. The only justifiable motive behind using the sinusoidal signal is its availability and the facility to produce it. Following the development of a configurable alternating magnetic field generator, we aim to study the effect of various waveforms on the heat production effectiveness of magnetic nanoparticles, seeking to prove that signals with more significant slope values, such as the trapezoidal and almost-square signals, allow the nanoparticles to reach higher efficiency in heat generation. Furthermore, we seek to point out that the nanoparticle power dissipation is dependent on the waveform’s slope and not only the frequency, magnetic field intensity and the nanoparticle size. The experimental results showed a remarkably higher heat production performance of the nanoparticles when exposed to trapezoidal and almost-square signals than conventional sinusoidal signals. We conclude that the nanoparticles respond better to the trapezoidal and almost-square signals. On the other hand, the experimental results were used to calculate the normalized power dissipation value and prove its dependency on the slope. However, adjustments are necessary to the coil before proceeding with in vitro and in vivo studies to handle the magnetic fields required.

Analyzing the On-State Power Dissipation in Stepped-Output Diode-Clamped Multi-Level Inverter

2010 ◽  
Vol E93-C (12) ◽  
pp. 1670-1678 ◽  
Author(s):  
Ehsan ESFANDIARI ◽  
Norman Bin MARIUN ◽  
Mohammad Hamiruce MARHABAN ◽  
Azmi ZAKARIA
Keyword(s):  
Power Dissipation ◽  
State Power ◽  
Multi Level

Heat production of sedimentary rocks in the Sichuan basin, Southwest China

2018 ◽  
Vol 52 (5) ◽  
pp. 401-413 ◽  
Author(s):  
Chuanqing Zhu ◽  
Ming Xu ◽  
Nansheng Qiu ◽  
Shengbiao Hu
Keyword(s):  
Heat Production ◽  
Sichuan Basin ◽  
Southwest China ◽  
Sedimentary Rocks ◽  
The Sichuan Basin

Low Power dissipation of Ring Counter using Dual sleep Transistor approach

2014 ◽  
Vol 4 (3) ◽  
pp. 9-13
Author(s):  
M. Balaji ◽  
◽  
B. Keerthana ◽  
K. Varun ◽  
◽  
...  
Keyword(s):  
Low Power ◽  
Power Dissipation ◽  
Ring Counter ◽  
Low Power Dissipation

Towards the Design of Cost-efficient Generic Register Using Quantum-dot Cellular Automata

2020 ◽  
Vol 10 (4) ◽  
pp. 534-547
Author(s):  
Chiradeep Mukherjee ◽  
Saradindu Panda ◽  
Asish K. Mukhopadhyay ◽  
Bansibadan Maji
Keyword(s):  
Cellular Automata ◽  
Quantum Dot ◽  
Power Dissipation ◽  
Cmos Technology ◽  
Oxide Semiconductor ◽  
Digital Data ◽  
Design Parameters ◽  
Flip Flop ◽  
Quantum Dot Cellular Automata ◽  
Cost Efficient

Background: The advancement of VLSI in the application of emerging nanotechnology explores quantum-dot cellular automata (QCA) which has got wide acceptance owing to its ultra-high operating speed, extremely low power dissipation with a considerable reduction in feature size. The QCA architectures are emerging as a potential alternative to the conventional complementary metal oxide semiconductor (CMOS) technology. Experimental: Since the register unit has a crucial role in digital data transfer between the electronic devices, such study leading to the design of cost-efficient and highly reliable QCA register is expected to be a prudent area of research. A thorough survey on the existing literature shows that the generic models of Serial-in Serial Out (SISO), Serial-in-Parallel-Out (SIPO), Parallel-In- Serial-Out (PISO) and Parallel-in-Parallel-Out (PIPO) registers are inadequate in terms of design parameters like effective area, delay, O-Cost, Costα, etc. Results: This work introduces a layered T gate for the design of the D flip flop (LTD unit), which can be broadly used in SISO, SIPO, PISO, and PIPO register designs. For detection and reporting of high susceptible errors and defects at the nanoscale, the reliability and defect tolerant analysis of LTD unit are also carried out in this work. The QCA design metrics for the general register layouts using LTD unit is modeled. Conclusion: Moreover, the cost metrics for the proposed LTD layouts are thoroughly studied to check the functional complexity, fabrication difficulty and irreversible power dissipation of QCA register layouts.

Performance Analysis of Various Multipliers Using 8T-full Adder with 180nm Technology

2020 ◽  
Vol 13 (6) ◽  
pp. 864-870
Author(s):  
Sai Venkatramana Prasada G.S ◽  
G. Seshikala ◽  
S. Niranjana
Keyword(s):  
Low Power ◽  
Power Dissipation ◽  
High Speed ◽  
High Performance ◽  
Full Adder ◽  
Fundamental Operation ◽  
Wallace Tree ◽  
Power Delay Product ◽  
The Comparative Study ◽  
Wallace Tree Multiplier

Background: This paper presents the comparative study of power dissipation, delay and power delay product (PDP) of different full adders and multiplier designs. Methods: Full adder is the fundamental operation for any processors, DSP architectures and VLSI systems. Here ten different full adder structures were analyzed for their best performance using a Mentor Graphics tool with 180nm technology. Results: From the analysis result high performance full adder is extracted for further higher level designs. 8T full adder exhibits high speed, low power delay and low power delay product and hence it is considered to construct four different multiplier designs, such as Array multiplier, Baugh Wooley multiplier, Braun multiplier and Wallace Tree multiplier. These different structures of multipliers were designed using 8T full adder and simulated using Mentor Graphics tool in a constant W/L aspect ratio. Conclusion: From the analysis, it is concluded that Wallace Tree multiplier is the high speed multiplier but dissipates comparatively high power. Baugh Wooley multiplier dissipates less power but exhibits more time delay and low PDP.

Sign in / Sign up

Export Citation Format

Share Document