Due to the problem associated with device power dissipation, the demand for low
power devices is increasing at a faster rate as a result of wider implementation of
smaller-sized, portable, and hand held devices in the ...
Ionospheric irregularities were small-scale fluctuations or disturbances in the ionosphere, the
part of the Earth's atmosphere that is ionized by solar radiation. These irregularities can affect
radio wave propagation ...
Metal oxide nanoparticles have gained significant attention in recent years due to their unique
properties and potential applications in various fields. However, the size of these nanoparticles plays a
crucial role in ...
Silver nanoparticles (AgNPs) exhibit unique optical properties due to their localized surface
plasmon resonance (LSPR), which is influenced by their size, shape, and synthesis method. This
study aims to explore and compare ...
Solar radiation at the earth‟s energy source including a significant amount of ultraviolet
rays. Ultraviolet B (UV-B) is one of the types of UV radiation with wavelength range from 280315
nm.
In
this
study,
the
co ...
The ionosphere is the part of the atmosphere that contains ionized gases, called plasma,
and that affects radio propagation. The response of the ionosphere and magnetosphere to
two powerful geomagnetic storms that occurred ...
This thesis investigates the impact of geomagnetic storms on the global ionospheric Total
Electron Content (TEC) during selected events from April 2023 to August 2024. The primary
objective is to analyze the dynamic ...
Ionosphere, is a thin layer of plasma that occupies the upper layer of the Earth's atmosphere,
affecting radio communications, satellite navigation, and space weather. For this reason,
monitoring changes in the ionosphere ...
The demand for maximum performance parameters, with some level of trade-o but
not too much compromise between di erent parameters, from CMOS op-amp circuits
in general and two stage CMOS op-amps in particular is driving ...
The ionosphere, also known as the ionized part of the upper atmosphere, is believed to vary as
a function of different parameters such as solar and geomagnetic activities. One of the
peculiar parameters that describe the ...
The main objective of this research is to enhance the DC open loop gain and voltage
swing of a Telescopic CMOS op amp by using OrCAD PSPICE design and simulation
software, based on electronic devices and advanced integrated ...
The need to design and manufacture CMOS amplifiers to maintain acceptable level of
performances at low voltages is immensely important. This research work emphasizes
on investigating the CMRR, slew rate, and DC gain of ...
This study investigated the temporal variations of solar UV radiation during Solar
Cycles 23 (1996-2008) and 24 (2009-2020). The broader implications of the UV
irradiance variation for Earth’s atmosphere, climate and ...
This graduate project work focuses on the practical application of Josephson tunneling.
Using the time-dependent Schrödinger equation, we derived the mathematical
expressions for current density (J), phase difference , ...
The sun’s activity governs the interaction of the magnetosphere with the solar wind and
Earth’s magnetic field. The influence of the magnetosphere is known as a geomagnetic
storm. The main purpose of studying geomagnetic ...
Solar irradiance is a critical factor influencing the output of solar power plants, and its accurate
prediction can help reduce the uncertainty caused by its intermittent nature. This study evaluates
the performance of ...
The main aim of this thesis is to explore how solar activity impacts the upper atmosphereabove Addis Ababa, Ethiopia, situated at 9.040°N and 38.770°E. Spanning from 2012 to
2016, the study employs ground-based GPS data ...
Global Navigation Satellite System (GNSS) and international telecommunications
critical to a modern technological world are frequently disrupted by the Earth’s iono sphere. Trans-ionospheric satellite navigation links ...
In semiconductor physics, precise ZnO nanoparticle size determination is crucial due to its impact
on material properties and applications. Traditional methods like electron microscopy were limited
by their complexity ...
n this thesis work, Zinc Niobo Tellurite (TNZ) and Cadmimun Niobo Tellurite (TNC)
glass systems with general formula (70-y-z)TeO
2
-(20-x)Nb
2
O
5
-(10+x) ZnO-yEu
-z
Dy
2
O
3
and (70-y-z)TeO
2
-(20-x)Nb
...