Journal Dec 2021 No 1
FALLING TOWER
Sahar Semsarha ,Farzanegan2 high school, Tehran/ Iran, [email protected]
Journal Vol 5, No 1, 2021, (P 3-6)
This experiment is about the motion of identical discs
that are stacked on top of each other if we apply a sudden
horizontal force to the bottom disc, the tower might remain
standing.
When the sudden force is applied to the tower, other discs
will start to move versus each other. If the center of mass of
the discs passes through the last point of the bottom disc
more than a critical time, the tower will topple because of
the torque which is applied to the discs of the tower
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IRREVERSIBLE CARTESIAN DIVER
Mouzhan Moinian , Farzanegan 7 high school, Tehran/ Iran, [email protected]
Journal Vol 5, No 1, 2021, (P 7-10)
The problem statement says “ A simple Cartesian diver
(e.g. an inverted test tube partially filled with water) is
placed in a long vertical tube filled with water. Increasing
the pressure in the tube forces the Cartesian diver to sink.
When it reaches a certain depth, it never returns to the
surface even if the pressure is changed back to its initial
value. Investigate this phenomenon and how it depends on
relevant parameters.”
In our initial observation, when we squeeze the bottle, the
diver sinks to the bottom of the bottle and after crossing a
certain depth, it spontaneously sinks and doesn’t come back
to the surface when we decrease or release the pressure.
What happens to a simple Cartesian diver? The behavior
of a Cartesian diver is unique and doesn’t occur with
normal buoys, but why
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The Intelligent Diagnosis and Treatment of …
SeyedehSara Jalilishani, [email protected]
Journal Vol 5, No 1, 2021, (P 11-15)
In postural deformities, there is an imbalance in the loads
imposed on different areas. Where loads exceed normal
physiological limits consistently and over prolonged
periods of time, structural changes occur in the skeletal
bones. These structural changes cause postural
deformities, such as: genu valgum, genu verum,
asymmetric shoulders, Kyphosus and etc. [1]. These
deformities are spreading among people and mostly among
students and workforces because of the environment they
work in.
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Magnetic Field
Erfan Behrouz, Mashhad, Iran, [email protected]
Journal Vol 5, No 1, 2021, (P 16-18)
In magnet science, scientists achieved an extreme
progress. We have many famous laws and famous
scientists in this science, such as: Faraday’s law, Lenz law,
Joseph Henry (inductance), Hans Christian Oersted
(magnetic fields).
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Epidemiology (Covid-19)
Artin Radmatin Grade 6, Valeh School, Tehran/Iran, [email protected]
Journal Vol 5, No 1, 2021, (P 19-22)
Coronaviruses that can infect animals and humans and
cause respiratory distress; these discomforts may be as
mild as a cold or as severe as pneumonia. In rare cases,
animal coronaviruses infect humans and then spread
between them. You may remember the SARS virus from
2002 to 2003; The virus was an example of the corona
virus, which was transmitted from animals to humans.
Another important and newer breed of the virus is the
coronavirus, which was discovered in the Middle East in
2012 and, according to scientists, the virus was first
transmitted from camels to humans, and the new virus,
Covid 19 or SARS Covid 2, which is an acute respiratory
syndrome.
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Genotoxic and Cytogenic Effect of Four Loko in Human Cells
Laura Ivonne Herrera Reyes. Ameyalli Flores Herrera, Emilio André Vázquez Hernández, high school students from Centro Universitario
México, [email protected], [email protected] y, [email protected]
Journal Vol 5, No 1, 2021, (P23-26)
Four Loko® is an energetic beverageconsumed by young
people in parties and social events, it contains 12% alcohol,
wormwood, furfural and taurine between others. This
beverage has been banned in several countries for its
secondary effects. The deputy María Mercado Sánchez
requested Cofepris to realize toxicologic studies for this
beverage since many young people have been hospitalized
by drinking it, and even launched an inciative to withdraw
it of the Mexican market.
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Augmented Reality as a Didactic Tool in Education
Myrahis Yurizahan Sanluis Cerezo , Armando Palma Lima , Escuela Secundaria Técnica , “Ing. Guillermo González Camarena”, Mexico
[email protected]
Journal Vol 5, No 1, 2021, (P 27-32)
At present, information and communication technologies
(ICT) have allowed a new form of interaction in the
teaching-learning processes. The rapid evolution of
computers and the growing use of mobile devices is
making both students and teachers use new media and
resources to enhance and acquire knowledge and thus
facilitate learning.
One of the many tools that can be used in education to
enhance knowledge is Augmented Reality (AR). AR is a
technology that uses virtual objects (created by computer)
for the user to perceive the real environment “augmented”.
For example, with AR applications, in geography the
parts that make up a volcano can be shown to the student,
how the DNA of human beings is made, some math
problems can be exemplified. All of this by using 3D
models that are more attractive, visual, and fun.
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The Effect of Salt on Ice Melting
AmirAli Safari, Grade 6, Valeh School, Tehran/Iran, [email protected]
Journal Vol 5, No 1, 2021, (P 33-35)
This problem tries to tell us how salt can melt ice and what
are these factors can affect this phenomenon. It relates to
our daily live, for example in winter when it snows, we
need to know which materials are better in terms of various
criteria such as the availability of material or the speed and
strength of melting snow and ice. First, we have to know
salt is a mineral composed primarily of sodium chloride
(NaCl), a chemical compound belonging to the larger class
of salts; salt in the form of a natural crystalline mineral is
known as rock salt or halite.
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Zeren Kaynak , Karşıyaka Efe Afyonlu ,Ozel Eraslan Anadolu Lisesi , Izmir/Turkey,
[email protected], [email protected]
Journal Vol 5, No 1, 2021, (P 36-37)
Accidents experienced by motorcycle drivers on curvy
roads are among the most frequently encountered news.
The vast majority of these accidents occur when the rider
loses control of the motorcycle while cornering as a result
of excessive leaning while cornering. Based on these
findings, it is aimed to develop a warning system that can
prevent motorcycle accidents in corners and inform the
user about the slope of the vehicle.
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The Effect of Biofilters on Water Quality Parameters and Efficiency
in Aquaponic System
Sena Ocak, Giresun Science High School, Turkey/Giresun, [email protected]
Journal Vol 5, No 1, 2021, (P 38-43)
In today’s world, a lot of inorganic fertilizer is given to the
environment to get more products from the unit area to
meet the nutritional needs. However, the introduction of
chemical fertilizers has caused environmental pollution
and serious health problems. Organic fertilizers used as a…
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Nephron Model For Course Teaching Material Purpose
Müşerref Şeyma Şahin ,Giresun Science High, SchoolTurkey/Giresun, [email protected]
Journal Vol 5, No 1, 2021, (P 44-47)
The main purpose of today’s education is; It should be to
raise people who can ask questions, say no, take critical
decisions, use initiative, have sufficient communication
skills, cope with new environments and establish new
relationships. Today’s individuals are not “knowledge
memorized” individuals who grew up in the traditional
school; must be “learning individuals”(Okutan, 2004).
Today, science education focuses on improving the
science literacy of individuals. A successful science
education aims to provide individuals with the knowledge
and skills they will need in their daily…
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The Coefficient of Restitution of Rebounding Capsules
Sadra Dindar, Rahe Roshd School, , [email protected]
Journal Vol 5, No 1, 2021, (P 48-50)
When tablets collide during manufacturing and handling
operations they rebound with a force and velocity that is
determined by the collision conditions and the properties of
the materials. This collision rebound behavior of solid
bodies can be described using a parameter known as the
“coefficient of restitution” (CoR). The CoR varies with the
mechanical properties of both colliding bodies and is lower
for more plastic collisions and higher for elastic collisions.
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aZoe Konstantinidou, bPolyxeni Panou ,c Andrianna Solomonidou , dIoanna Petridi , Anatolia College, Greece / Thessaloniki,
[email protected] , [email protected] , [email protected] ,
[email protected]
Journal Vol 5, No 1, 2021, (P 51-52)
The name Zephyros sparked our interest becauseZepher
is the ancient Greek God of Spring. We felt that this name is
perfect for our house on Mars because this is a new idea that
will bloom just like a flower in Spring. Zephyr was also the
God of the winds, which often symbolize change, new
ideas and environments, literally and figuratively.
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Saina Ahmadi, Nazanin Azizi, Farzanegan1 high school, Tehran/ Iran , [email protected]
Journal Vol 5, No 1, 2021, (P 53-56)
If you are a researcher in biology laboratories, you are
definitely familiar with micropipette as one of the most
important equipment. Human error is an inseparable part of
an experiment. One of the most common human errors that
occurs when working with a micropipette is that the
sampled well is lost in a 96-well plate due to the proximity
of the wells, low transfer volumes (<1000μl), adding a
colorless solution (which prevents visual control of the
sampling process), environmental factors (such as noisy
devices and overcrowded rooms), and mental states of the
operator (work stress, fatigue, and lack of concentration).
The unit of volume in a micropipette is microliter, so the
slightest error causes the largest variations in the test
results. Most of the time, the researcher does not notice the
error that changes the overall result of the experiment.
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