Authors from: Iran, Turkey, Brazil, Russia
Journal Dec 2022
The probability of a cylindrical dice …
Yas Meshkin, Tehran, Iran, [email protected]
Journal Vol 6, No 1, 2022, (P 4-7)
The problem states that to land a coin on its side is often
associated with the idea of a rare occurrence. What should
be the physical and geometrical characteristics of a
cylindrical dice so that it has the same probability to land
on its side and one of its faces?
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Synthesis and determination of …
Melek Ceyda Bozan, Balıkesir Şehit ,Prof. Dr. İlhan Varank Bilim ve Sanat Merkezi, [email protected]
Journal Vol 6, No1, 2022, (P 8- 11)
Polymers, also known as macromolecules, are large
molecules that are formed by the repetition of one or a
group of small chemical units called monomers. The word
polymer is formed by the combination of the Latin words
“poly” meaning numerous and “meros” meaning piece.
Polymers are divided into three groups according to their
chain forms: thermoplastics, elastomers and
thermosettings (Fig. 1). Thermoplastics, by means of the
linear or branched chains in their structure, can be
softened, melted and reshaped by the application of heat.
They can be easily dissolved with the use of an appropriate
solvent.
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Setareh Sabeti, Farzanegan 2 high School, Tehran, Iran
Journal Vol 6, No 1, 2022, (P 12-14)
It is clear that the body of animals and humans is made of
different parts and organs. These parts and organs grow
during time gradually and everything about the biology of
an animal is influenced by its body size, including its
physiology (e.g., heartrate, respiratory rate, total
metabolic rate, mass specific metabolic rate, growth rate),
anatomy (e.g., organ mass, blood volume, surface area,
cross-sectional area of limbs), and ecology (e.g., diet,
home range size, reproductive strategy, life span,
population density) [1]. But the question is that “what
happens to these different parts when an animal grows?”
and to answer this question many tries have been done [2].
There are many researches which show when the body
becomes more massive, different parts become larger.
These studies are the subjects of allometry science. Hence
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Mohammad Erfan Nadeali, Mashhad, Iran, [email protected]
Journal Vol 6, No 1, 2022, (P 15-16)
Are electrons excited by heat? Electrons can also be
excited by electrical excitation, where the original electron
absorbs the energy of another, energetic electron. The
simplest method is to heat the sample to a high
temperature. The thermal energy produces collisions
between the sample atoms causing the atom’s electrons to
be excited.
When an electron in an atom has absorbed energy it is
said to be in an excited state. An excited atom is unstable
and tends to rearrange itself to return to its lowest energy
state. When this happens, the electrons lose some or all of
the excess energy by emitting light.
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Disease detection from chicken …
Akbudak, Burak Sina , Turkey, [email protected]
Journal Vol 6, No 1, 2022, (P 17-23)
In this study, a mobile application was developed to
minimize the mentioned problems and to enable poultry
producers to obtain fast and reliable information about
diseases that occur in their animals. To be used in this
mobile application, a deep learning model has been
developed that can distinguish pseudo-plague (Newcastle
strain), salmonella, and coccidiosis diseases in chicken
feces through the data collected by processing the
photographs taken from the feces of chickens with the help
of tools such as artificial intelligence, machine learning,
and image processing, which are widely used today.
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Kiana kamali poorshiraz ,Tehran, Iran, [email protected]
Journal Vol 6, No 1, 2022, (P24-27)
In this research a metal disk in a vessel of water is studied.
A metal disk with a hole at its center sinks in a container
filled with water. when a vertical water jet hits the center of
the disk , it may float on the surface. It shall sink due to its
higher density but as an external force here the water jet
impinges on the center of the disk and it is observed that the
disk floats.To find relevant parameters several
experiments are designed with qualitative analysis.
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Cooking oil biofilter based on …
Stênio Cândido Bezerra dos Santos Filho¹, Júlia Graziela Rocha do Nascimento², Guilherme Alves França Gomes de Albuquerque³,
Journal Vol 6, No 1, 2022, (P 28-32)
Water is one of the essential elements for life to exist,
being present in 70% of the human body’s composition and
also covering 70% of planet Earth. However, the
distribution of this resource is quite uneven among the
different regions of the planet. In this sense, and
considering only fresh water in liquid form, the most
adequate and most used for human consumption, about
13% is found in Brazilian territory. Therefore, we are well
served by this vital element (OECD, 2015; UN, 2021).
Despite all the amount of water in the country, it is not
available to all due to geographical and economic factors,
and even in places where water exists abundantly, it is not
suitable for human consumption, which occurs more
evidently in urban centers, as in the case of Recife, which
despite having about 99 urban channels and five major
river has a system of water rotation for its inhabitants.
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Spinning or sliding of a washer on a vertical rod
Ramin Abdollahzadeh,Tehran, Iran, [email protected]
Journal Vol 6, No 1, 2022, (P 33-35)
The problem states that a washer on a vertical steel rod
may start spinning instead of simply sliding down. To
study the motion of the washer and what determines the
terminal velocity with the most parameters that would
affect on it, several experiments are designed .
To find the optimum conditions different rods and
washers are studied.
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How to make a candle powered turbine
Seyed Zahra Hosseini , Kish Island, Iran, [email protected]
Journal Vol 6, No 1, 2022, (P 36-38)
The candle under the spiral lit up, spiral starts to rotate
above the needle that is attached to the tip of the rod so, we
can say the spiral above the candle rotates by the air flow
that comes from the heat that is given to it by the candle.
The candle heats the surrounding air heated air causes the
air particles to go farther apart. Thereby, making the air less
dense and less dense air always rise above the dense air.
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Melda Guler, Gulseren Coskun, İzmir Science High School, Turkey, [email protected]
Journal Vol 6, No 1, 2022, (P 39-43)
There is a very rapid population growth in the world. As
of 31 December 2021, the population residing in Türkiye
increased by 1 065 911 people compared to the previous
year and reached 84 680 273 people (TUIK, 2022).
Rapid population growth has led to the need to build
housing and business areas. This situation has led to an
increase in investments in the construction sector and the
use of more cement. Increasing cement production is both
costly and brings along various environmental problems
(Gürtuğ, Sesalı, Yıldırım, 2016). In addition, due to factors
such as earthquake and building age, cracks may occur in
the structures. As the buildings become uninhabitable due
to cracks, the building must be completely demolished.
This causes both environmental pollution and high costs.
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Aysan Keramat ,Tehran/ Iran,
Journal Vol 6, No 1, 2022, (P 44-45)
Normally there are three types of material in terms of
m a g n e t i s m : f e r r o m a g n e t i c , d i a m a g n e t i c a n d
paramagnetic. Different liquids and materials exhibit
different behaviors in the presence of magnets. Water is one
of these materials that shows an interesting behavior in the
presence of a magnet because it is one of the diamagnetic
materials that is repelled against the magnet. Temperature
has no effect on this material because in general, unlike
para-magnetic materials, temperature has no effect on
diamagnetic materials.
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The effect of different salts …
Saina Nikmehr ,Tehran/ Iran, [email protected],
Journal Vol 6, No 1, 2022, (P 46-49)
Have you ever thought about the effect of various salts on
the onion cell? for investigating and answering the
question raised in this study first, we remove the purple
epidermis of the onion cell and then take a picture of its
previous state under the microscope, in the Next step, we
use a dropper, and then pour a few drops of the salt solution
over the sample and after that by taking some pictures at
different time lapses, the changes would be recorded in the
images.
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Prokofev Ivan, Sergeeva Valentina, Galeev Artur
Lomonosov Moscow State University High School, Moscow, Russia,
Journal Vol 6, No 1, 2022, (P 50-52)
The stratosphere is a layer of the atmosphere located at an
altitude of 11 to 50 kilometers. Rockets fly through it in a
matter of minutes, planes very rarely get there, and the
people who were there can be counted on the fingers. The
stratosphere is very dangerous due to its harsh conditions,
such as low pressure and temperature, as well as increased
solar radiation, which is why it is often called near space.
But this is what attracts researchers – in the stratosphere,
you can conduct many experiments with conditions close
to real space. Therefore, our goal was to develop a
stratospheric satellite as a platform for scientific
experiments and directly conduct them.
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Natural timing devices as biological clock…
Seyed Parsa Saadatjoo, Mashhad, Tehran, [email protected]
Journal Vol 6, No 1, 2022, (P 53-55)
Biological clocks are natural timing devices that are
organized by the day-cycle. They are spread throughout all
our body and interact with several kinds of cells.
Biological clocks are fundamental to the functioning of
life and to the organization and coordination of behavior.
Simple behavioral functions, such as timing active and
inactive periods during the day/night cycle to maximize
productivity and minimize risk rely on internal clock
functions.
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Controlled, efficient hydrogen and…
UMUT ŞAHAN,ESKİŞEHİR Fatih Science high school, [email protected]
Journal Vol 6, No 1, 2022, (P 56-65)
Fuel cells are electrochemical devices that convert the
chemical energy of the reaction directly into electrical
energy. The basic physical structure of a fuel cell consists
of a porous anode and an electrolyte layer in contact with
the cathode on both sides. A diagram of the fuel cell with
the reaction input and product gases is shown in Figure (1).
Likewise, the flow directions of the ions through the fuel
cell are also shown.
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