TOJSAT - Volume 9 - Issue 1 - January 2019
A “SUPER FOOD” FOR ALTERNATIVE NUTRIENTS: Spirulina Platensis Nilay Seyidoglu, Deniz Belenli
Abstract:
Nutrition provides the growth and maintains function of organism. In recent years,
there has been an increase in importance of alternative foods for feeding and health, especially
Spirulina platensis. S.platensis is a microalgae called as “Super food” as endorsed by lifestyle
personalities, and also has been approved as a health food by the World Health Organization.
This study we aimed to evaluate the effects of different doses of S.platensis (500-1000 mg/kg
bw) on physiological such as growth, haemotogical and biochemical parameters. During trial
the rats were weighed weekly and the haemogram parameters (haematocrit, haemoglobin, redwhite
blood cell counts, leukocyte subtypes, MCV, MCHC, RDW and PLT) were analyzed.
Serum total cholesterol, its fractions (LDL, HDL) and atherogenic indices (TC:HDL-C, LDLC:
HDL-C) were observed. Besides that, serum protein, albumin, globulin and
albumin/globulin ratio were determined. Although there were no differences occurred among
all groups statistically, all parameters were found in their reference values. However, effects
of lower dose of S.platensis showed the best result for those physiological parameters. As a
result that, S. platensis with its high concentration of functional nutrients is called as an
important alternative therapeutic food and can be said that it can be used safely.
A CASE STUDY OF A GRAVITY WALL LOCATED IN THE FISHING PORT AREA Aykut EROL, Zülküf KAYA, Erdal UNCUOĞLU, Hacı Bekir KARA
Abstract:
In a technical sense, a gravity wall is defined as any structure that resists soil
pressure. The gravity wall is typically a permanent structure constructed in the form of a
retaining element for the slope. The advantages of this wall type are that the excavation
materials can be used in the walls of these walls, the evaluation of the waste materials and the
integrity of nature by adapting to the ground conditions of the weight wall. The gravity wall,
which is built between the service road of fishing port and the highway, is about 340 meters in
length and varies in height and has a maximum height H = 10.50 meters. During the
construction of the road, some parts of the gravity wall which had been built, were collapsed in
the form of breakage in the wall as a result of the surcharge load effect caused by mass transfer
from the road embankment. Damaged parts of the wall were repaired. In this study, bearing
capacity and stability analysis were carried out on the failure cross section (Section-A) which
has the height of 5.16 meter along the wall route. GEO5 package program are used in the
analyses. The parameters used in analyses were obtained from the laboratory studies and
literature. The port area is located in the second degree earthquake zone and the seismic effect
was considered in the analysis.
A COMPARATIVE STUDY OF VARIOUS POROUS ADSORBENTS FOR CO2 ADSORPTION Fatma OĞUZ ERDOĞAN
Abstract:
Zeolites, metal organic frameworks (MOFs), carbon nanotubes, polymers, and
activated carbons have been commonly used as porous adsorbents for CO2 adsorption. The
objective of the study was to prepare low-cost activated carbon from carob stones and compare
its adsorption capacities for CO2 with that of commercial mesoporous silica and four zeolites
(zeolite, 4A zeolite, ammonium Y and sodium Y zeolites). CO2 adsorption on these porous
adsorbents was investigated by using volumetric adsorption apparatus, TriStar II 3020 at room
temperature and at pressures up to 900 mmHg. The CO2 adsortion capacities (wt%) were
determined using the values of the quantity adsorbed at 900 mmHg. It could be confirmed that
chemical activation plays an important role in determining the porous structure and amount of
CO2 adsorbed.
A NEW PROGRAMMING LANGUAGE Burak Çakır, Mustafa OF
Abstract:
Everyone knows that hardware does not mean anything without software. Software
is developed by programming languages. One of the most important factors determining the
reach of software is the characteristics of the programming language. Many rich applications
can be developed with a language that is fast, easy to learn, and has a large library.
The aim of this work is to provide information about the Go programming language that a
powerful, fast, easy to learn programming language. Go programming language, developed by
Google. Many of the deficiencies of traditional programming languages have been eliminated.
It appeared in 2009 and 1.0 version was released in 2012. With the Go programming language,
fast and sophisticated projects that can work on the web or in a different environment can be
produced. It is an open-source programming language that is evident by the notion of rule,
flexibility and speed. In a short time, he was among the fastest growing programming
languages.
NUMERICAL STUDY USING MIXTURES OF WATER – ETHYLENE GLYCOL BASED NANOFLUIDS ON LAMINAR HEAT TRANSFER OF AN ANNULUS Elif Büyük ÖĞÜT, Koray ÖZDEMİR, Halil İbrahim SARAÇ
Abstract:
In this study, developing laminar flow and heat transfer behaviour of ethylene glycol
(EG) and water mixture based SiO2 nanofluids in an annulus have been numerically investigated.
A constant heat flux was applied to the inner walls of the annulus with 100 W / m2. Water 100%
- EG 0%, water 50% - EG 50% and water 0% - EG 100% mixtures have been utilized as the base
fluids. SiO2 nanoparticles have been used with d = 20 nm and volume fractions ϕ =0%-4%. The
Reynolds number varies from 200 to 1000. The physical model of the test section mainly consists
of two concentric horizontal cylinders that form an annular space ranging from two
interconnected elliptical tubes with axis ratio (r1/r2=1/2) placed at the centre of a circular cylinder
with major radius of 2r2 with the length of 1 m. Governing equations have been solved with Ansys
Fluent programme. The velocity distribution, temperature contours, average Nusselt number and
thermal-hydraulic performance have been analysed and presented. The effects of nanofluids have
been examined on heat and flow fields and it has been observed that the heat transfer increases
together with the nanoparticle volume concentration. When the nanofluid is used in a forced
convection, the amount of heat transfer increases as the Reynolds number increases. The highest
value of the average Nusselt number was obtained in the EG based nanofluid with ϕ=4% and
Re=1000 as 29.14, and the lowest value was obtained in the water-based nanofluid with ϕ=4%
and Re=200 as 5.61. Results show that the use of nanofluid in the annulus channel increases the
thermal performance of systems.
A PATTERN RECOGNITION SYSTEM FOR DETECTION OF ROAD SIGNS Bochra TRIQUI, Abdelkader BENYETTOU
Abstract:
Road sign identification in images is an important issue, especially for vehicle safety
and road management applications. It is usually tackled in three stages: detection, recognition
and tracking, and evaluated as a whole. To progress towards better algorithms, we focus in this
article on the first stage of the process, namely road sign detection. We focus our work on a
feature-based approach to build geometrical models of various kind of shapes: triangle, square,
and circle form.
ACTIVATING THE DISTANCE LEARNING SYSTEM Burak Çakır, Mustafa OF
Abstract:
In this study, the basic elements of the distance learning management system will be
explained. It will provide basic information about Moodle, a distance learning management
system running on a web browser. It will be emphasized that the Moodle education system, an
open source remote learning management system, is a very popular educational system. The
creation and generalization of a distance learning management system that can be activated on
a cloud computing system running on a server will be practically explained. As a result, it will
be explained that the server infrastructure required for the installation of a distance learning
management system which can be accessed from any environment where the internet is
available can be easily obtained by the cloud computing system. In a very short period of time,
a distance learning management system with full features in terms of training infrastructure
may become operative. The main aim is to express that the remote learning management
system, which will meet the educational needs of people without face-to-face training, is easily
applicable.
ADAPTIVE RELAYING IN ELECTRIC POWER SYSTEM PROTECTION Behçet KOCAMAN, Üzeyir AKCA
Abstract:
No matter how good the design and construction of electrical power systems, various
faults and disturbances are encountered during their operation. Protection systems are used to
minimize the effects of faults and disturbances on the network elements as well as to limit the
danger of human life. Appropriate solutions can be produced to prevent faulty operation in
electrical power systems. One of these solutions is the adaptive relaying. Adaptive relaying
defines protection schemes that conform settings and logic of operations based on the
prevailing conditions of the system. These adjustments can contribute to avoid repeating of
miss-operation. Adjustments could include well changing relay parameters, the logging of data
for post-mortem analysis and communication throughout the system. The electrical distribution
system is considered one of the most complicated machines in existence in many countries.
Electrical phenomena in such a complex system can inflict serious damages. This requires
damage prevention from protection schemes. There was a safety problem between capacity to
deliver power and the demand until last years. The protection schemes worked on dependability
allowing the disconnection of lines and transformers with the purpose of isolating the damaged
element. In this paper, adaptive protection schemes for electric power system protection will be
discussed, one of which is communication.
AN ASSAY WHETHER EARLY COMMUNICATION (TEACHING TURKISH) METHODS AFFECT THE THINKING PROCESS THROUGH TURKISH AND MATHEMATICS COURSE Nevin ALGÜL
Abstract:
The scientific knowledge asserts that the language learning center of the human
species is designed in a way to understand the whole better than the single parts. In other
words, inductive method which is particularly applicable and necessary for the scientific
field, is superseded by deduction method due to its superiority when it comes to learning
a language. It is necessary to conduct studies whether the teaching method of the native
language affects the thinking process and on the cause-and-effect relationships. Immediate
motivation of people is not possible. This process is performed gradually and the initial
stages are of great importance in the formation of the governance of the masses. An
individual who can see single parts but can not see the whole (the big picture as
colloquially expressed by the Western), can not think analytically, has an underdeveloped
reasoning ability or not at all developed; does teaching method of native language have
any effect on creating people who cannot make a whole out of relevant parts or ,as literally
expressed by native of Anatolia, in creating people who cannot tie up the ends of the ropes?
How does the early communication method of 'mathematical' knowledge, a must for life,
affect the ability to grasp and apply it? What does it have to do with using Turkish
language?
As it can be seen from the above paragraph, this assertion has two goals: The first one is
as follows by means of an example from social sciences: It is based on how the teaching
method of native language can influence the thinking process through a practice to
complicate the task of language learning center in brain, that is contrary to its functioning.
And the second one:With use of an example from life sciences, will be starting discussion
with respect to the effect of not teaching abstract mathematical knowledge through
concrete examples on thinking process, its consequences, and how the way of teaching
mathematics influences language skills since 'linguistic' is based on mathematics.
AN INVESTIGATION ON THE EFFECTS OF ECAP ON THIXOTROPIC MICROSTRUCTURE OF AA7075 ALUMINUM ALLOY Ersin Asım GÜVEN
Abstract:
With Zn as the primary alloying addition, alloy from the 7000 family offers higher
tensile strength than many steel especially in T6 temper. These family are widely employed for
aircraft, wheels and major structural components, due to its high strength-to-density ratio. Semisolid
forming has many advantages such as able to produce high density material, long tool life,
less production forge and near net shape. Also less liquid fraction then cast, results as less
shrinkage. Semi-solid products are more durable then cast ones because of non-dendritic
microstructure and less porosity, also cheaper than both cast and forged products. ECAP is an
operation that involves simple shear deformation by severe plastic deformation processes.
However, the material will not be subjected to any cross sectional changes. No cross sectional
changing is the most important feature that distinguishes it from conventional methods.
In this study, one of the most important wrought alloys for aerospace applications, AA7075
was used. In order to get the best semi-solid forming feedstock, thixotrophic character has been
determined in terms of predeformation rate, heating temperature and holding time.
APPLICATION OF THE FMEA FOR ANALYZING DEPENDABILITY OF POWER TRANSFORMER AT HASSI R'MEL GAS FIELD Bouchra NADJI , El laid BOUCHTOB, RazikaTAHI
Abstract:
Transformers are essential elements in electrical network. These equipments are
classically constructed out of copper, steel, paper and insulating oil. Transformers have been
used worldwide for many years and their availability and reliability is a major concern for all
electricity users. This paper describes the use of the failure modes analysis and their effects
(FMEA) for analyzing the dependability of power Transformer in boosting station at Hassi
R'Mel gas field in Algeria..
BIOCHEMICAL PROPERTIES OF POLYPHENOL OXIDASE FROM DAUCUS CAROTA Reyhan Gul Guven, Kemal Guven, Fatma Matpan Bekler, Nurten Aslan
Abstract:
Polyphenol oxidase (PPO) is a very important enzyme that is responsible for the enzymatic
browning of vegetables and fruits, which is undesired process and need to be prevented in food
technology. In this study, PPO from Daucus carota pell (carrot) was extracted and some of its
biochemical properties were investigated. The optimum temperature and pH of PPO were found
to be 40 °C and 8.0, respectively. The Lineweaver – Burk plot analysis of the PPO was carried
out and the Km and Vmax values were determined for the substrate catechol. We also found
that some inhibitors such as SDS and sodyum azide inhibit the enzyme activity. This is the first
study on characterisation of PPO from Daucus carota bark that may provide new insight into
how to overcome the enzymatic browning.
CHALLENGES IN TEACHING GLOBAL SOFTWARE ENGINEERING TO UNDERGRADUATE STUDENTS: COURSE DESIGN Vinitha Hannah Subburaj, Emily M. Hunt, Angela Spaulding, James D. Webb
Abstract:
Unlike many courses in the field of computer science, teaching software
engineering comes with a set of challenges. These major challenges can be categorized into
five aspects, namely: (1) incorporating a case study based approach to the design of lectures
and assignments, (2) including projects from a range of domains, technology, and platforms,
(3) keeping up with rapid evolution of technology, (4) setting up a development
environment enabling students to understand the impact of geographical, social, and cultural
implications on software development, and (5) having students understand the fact that
software development is not simply a technical activity, but involves facilitating effective
operation of teams. Since software systems have now become an integral part of almost
every single industry, producing students who can develop and maintain systems that span
across various industries is critical. This paper describes each of these challenges and
possible approaches towards overcoming these challenges. The focus of this paper will
address the challenges of creating a course within an undergraduate computer science
curriculum to teach global software engineering. Due to the globalization of software
development activities, industries are looking at recruiting students who are equipped with
skills needed to deal with challenges around global software engineering. Designing
instructional materials and assessment tools to develop this unique mix of skill sets is
addressed in this paper. We also discuss both the traditional and non-traditional aspects of
teaching software engineering to computer science students.
COMPARISON OF ACTIVATED CARBON PRODUCED FROM CAROB STONES WITH 4A ZEOLITE FOR ALLURA RED AC DYE ADSORPTION Fatma OĞUZ ERDOĞAN
Abstract:
The objective of the study was to prepare low-cost activated carbon from carob
stones (Ceratonia siliqua) and compaire its adsorption behavior for allura red dye with that of a
commercial 4A zeolite. The carob stones activated carbon (AC) and commercial 4A zeolite
(4AZ) were characterized BET surface area, micropore volume, total pore volume, average pore
size. Adsorption of a food dye, allura red, by AC and 4AZ was examined. The experimental
adsorption equilibrium data were compared with the Langmuir and Freundlich isotherm models
and the isotherm model parameters were determined. Pseudo-first-order and pseudo-secondorder
equations were fitted to the kinetic data, and the rate constants were evaluated. Results
showed that activated carbon produced from carob stones is suitable for the adsorption of allura
red food dye and could be used as a low cost effective adsorbent in the treatment of the industrial
wastewater.
SYNTHESIS AND ANTIMICROBIAL STUDY OF SOME POLYCYCLIC COMPOUNDS BY [3+2] CYCLOADDITION REACTIONS OF ALDAZINES WITH N-ARYL MALEIMIDES Abdullah Abdalkarim Al–Shara′ey, Mohammed Hadi Al–Douh, Younes S. Gahnem
Abstract:
In good yields, the cycloaddition reactions between 1,4-bis[(aryl) benzylidene]
hydrazine 1 and 2 with N-aryl maleimides 3(a-e) were produced 2,9-bis(aryl)-5,12-bis(aryl)-
1,5,8,12-tetraazatetracyclo[6,6,0,3,70,10,140] tetradecane-4,6,11,13-tetraone 4,5(a-e). These
compounds were directed toward hydrogenation, hydrolysis and dehydrogenation reactions to
afford the expected derivatives 6,7(a-e), 8(b,d,e), 9d, 10(c,d) and 11(a,b), respectively. The
new synthesized compounds were assigned using elemental analysis, mass spectroscopy,
infrared and proton nuclear magnetic resonance spectroscopy. However, the microbial activity
of these compounds were studied.
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