Volume 2, Issue 2, (2014)
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Surveying effects of fixation in formalin on the morphological characteristics of goldfish (Carassiusauratus) Volume 2, Issue 2, Pages: 28-30 | [Full Text] PDF (71.9 KB) |
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Elaheh Hassan Nataj Niazie1*,
Mohammad Forouhar Vajargah2, Reza Tarkhani1, Mohammad
Javad Vesaghi3, Ahmad Fouladi Sabet1,
Fatemeh Abbasi1, Wahid Zamani4,
Mojtaba Bayati5,
Ali Jafar Nodeh1 and Aliakbar Hedayati2 |
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1- Department of
Fisheries, Faculty of Fisheries and Environment, Gorgan
University of Agricultural Sciences and |
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Abstract
— Formalin is one of the important fixator in fish
studies, and has many effects on morphological indices of fishes, so in this
study the effect of this fixation was examined. Thepresent
study was done to investigate the effects of fixing and preserving in 10% formalin
on the morphological characteristics of goldfish (Carassiusauratus).
For this aim, 30 specimens of goldfish were collected from the Researches
Center of Aquaculture, Gorgan University of
Agricultural Sciences and Natural Resources, Gorgan,
Iran. After initial evaluation on morphological characters such as Total
Length (TL), StandardLength (ST) and Head Length
(HL), samples were fixed and preserved in 10% w/v formalin for 11 weeks.
After this period, samples were removed from formalin and measurement and
evaluation of color features were done once again. The results showed
shrinkage was common in all of the specimens and changes in body color were
clearly distinguishable with fresh fish such a way that the body and fins
color were opaque but color pattern is acceptable but the intensity is
reduced. |
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Keywords
— Formalin, Carassiusauratus,
Morphological characteristics, Fixation |
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Simulation of Heavy Metal Removal by
α-Keratin Nano-Structure of Human Hair from
Environment Volume 2, Issue 2, Pages: 31-35 | [Full Text] PDF (145 KB) |
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Leila Mahdavian |
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Department
of Chemistry, Doroud Branch, Islamic Azad
University, P.O. Box: 133. Doroud. Iran. |
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Abstract
— Including heavy metals are environmental
pollutants that human exposure through some of their water and food poisoning
can be acute and chronic and sometimes dangerous to establish. Lead can enter
the human body and animals by entering the food chain through the feeding and
breathing polluted air and they will cause poisoning. In this study, keratin
fibers nano-structure is used for Pb2+ removal from
environment. The keratin fibers using are low cost related to other methods.
The interaction of them is simulated and the ab intio calculations at the density function level of
theory (DFT) showed energy and thermodynamic properties changing for this
interaction. The cystine in α-keratin is
simulated and calculated approached to Pb ions in
different distances. There is disulfide bond (-SS-) in cystine,
for cation ions adsorbed in hair human fibers. The
results shown this method is exothermic, spontaneous and favourable
for heavy metals in environment. |
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Keywords
— Heavy Metal, α-Keratin, Cystine,
Simulation, DFT Method, Environmental. |
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-------------------------------------------------------------------------------------------------------------- Geophysical Exploration Studies of Additional Structures of Phase 12 of South Pars Gas (Tombak Region) Volume 2, Issue 2, Pages: 36-49 | [Full Text] PDF (4330 KB) |
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Alireza Ashofteh and Sharareh
Haj Ali |
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Young
Researchers and Elite Club, Islamic Azad University North Tehran Branch,
Tehran, Iran, St_a_ashofteh@azad.ac.ir. Master
of Geology Tectonics, Islamic Azad University North Tehran Branch, Tehran,
Iran, Sh.Ha_7@yahoo.com. |
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Abstract
— South pars gas complex, phase 12 is located in south of Iran, about 17km
east of Kangan, Busheher
province. In this study 6 seismic refraction profiles with refraction method
have been taken. Down-hole seismic profiles have been taken in 4 drilled
boreholes (down-hole) for determining P-wave and S-wave velocity and 22
electrical resistivity sounding have been taken for determining geological
condition of layers. Also points with Schulmberger-Weener
array have been taken. |
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Keywords — Geophysical Exploration, South Pars Gas, Structure, Tombak. |
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-------------------------------------------------------------------------------------------------------------- Extraction and preliminary characterization of bioactive molecules produced by a new Streptomyces strain Volume 2, Issue 2, Pages: 50-55 | [Full Text] PDF (432 KB) |
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El Arbi Boussaber1, Sidi Brahim Salem EL Idrissi1,2,
Issam Meftah Kadmiri1,3,
Lahoucine Hilali1 and Abderraouf Hilali1,4 |
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1-
Laboratory of Agrofood and Health, University
Hassan I, Faculty of Science and Technics. BP: 577,
Settat, Morocco 2-
Laboratory of polymers, radiation and environment, University Ibn Tofail, Faculty of Science,
Kenitra, Morocco 3-
Biotechnology unit, Moroccan Foundation for Advanced Science, Innovation and
Research Rabat, Morocco 4-
Higher institute of Health Sciences - University complex, Road Casa, BP: 539,
Settat, Morocco. |
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Abstract
— The
aim of this study was the description of a new streptomyces
strain (SP13'), isolated from pottery discharge samples of Boujad region in Morocco. The strain showed interesting
antagonistic activity against various test microorganisms. The bioactive
metabolites were extracted from both mycelia and culture supernatant of the
strain SP13’ with n-butanol, ethanol, methanol,
hexane, acetone, dichloromethane and chloroforme.
The extracts activity was evaluated against two Gram-positive bacteria
(Staphylococcus aureus ATCC 29213, Bacillus subtilis), two gram-negative bacteria (Escherichia coli
ATCC 25922, Klebsiella pneumoniae),
two filamentous fungi (Rhizomucor sp. Penicillium expansum) and one
yeast (Candida albicans). The nature of the active
extracts was determined by UV spectrophotometry
technique. Stability of antimicrobial activity of active extracts was tested
by conventional methods according to pH, temperature and light. UV spectra of
extracts have shown that the antimicrobial metabolites were a non-polyenic nature. They were not thermostable
and there was no significant loss of the antimicrobial activity after
treatment with various other factors (pH, light, duration freezing). |
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Keywords
— Non-polyene,
stability, biological activity, Streptomyces crystallinus, pottery discharge. |
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-------------------------------------------------------------------------------------------------------------- Evaluation of behavior factors converged crossover braced frames under triangular loading pattern Volume
2, Issue 2, Pages: 56-59 | [Full Text] PDF (244 KB) |
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Vahid Chegeni1,
Mohammad Reza Baradaran2, Babak Mansouri2 |
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1-M.Sc,
Department of Civil Engineering, Shahid Bahonar University, kerman,
Iran. 2-
Department of Civil Engineering, Meymand Center,
Islamic Azad University, Meymand, Iran. |
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Abstract — The lateral load
distribution pattern reflects the distribution of lateral inertial forces
applied to the structure caused by the earthquake. Inertial forces caused by
earthquakes with time changes and dynamic characteristics of the building are
subject to change. But in the non-linear static analysis in order to avoid
the complexity of this method, forces during analysis are considered
constant. Hence analysis and design codes suggest different lateral load
patterns to minimize the impact of this unrealistic simplicity. Pushover
analysis is of non-linear static analysis methods that can be used to obtain
structural capacity curve. Effective factors in determining the capacity
curve of the structure is the lateral load distribution. This paper examines
the triangular lateral load pattern in structures with convergent bracing previously
placed under linear static analysis and a three-dimensional frame structure
as an example was analyzed in the SAP2000 software. Therefore pushover
analysis was performed on the several frames with convergent crossover braces
(with 3,5,7,10,15 number of floors) and extra strength values, ductility and
behavior factor is obtained and he results are compared with a nonlinear time
history dynamic analysis. Also effect of the parameters affecting the rate of
behavior such as, Iranian and American sections of beams and columns, double
stud sections, will be examined for braces. |
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Keywords
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Force reduction factor, behavior
coefficient, nonlinear static analysis, the triangular load patterns,
convergent braces |
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-------------------------------------------------------------------------------------------------------------- Generating Functions for (P1^r)(n) and (P2^r)(n) Volume
2, Issue 2, Pages: 60-62 | [Full Text] PDF (259 KB)
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Sabuj Das1, Haradhan Kumar Mohajan2* |
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1-Senior
Lecturer, Department of Mathematics. Raozan
University College, Bangladesh. 2-Premier
University, Chittagong, Bangladesh. |
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Abstract — In 1970 George
E. Andrews defined the generating functions for (P1^r)(n) and
(P2^r)(n). In this article these generating functions are discussed
elaborately. This paper shows how to prove the theorem (P2^r)(n)= (P3^r)(n) with
a numerical example when n = 9 and r = 2. In 1966 Andrews defined the terms
A’(n) and B’(n), but this paper proves the remark A’(n) = B’(n) with
the help of an example when n = 10. In 1961 N. Bourbaki
defined the term P(n, m). This paper shows how to
prove a Remark in terms of P(n, m), where P(n,
m) is the number of partitions of the type of enumerated by
(P3^r)(n) with the further restrictions that b1 ≤ 2m.
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Keywords — Generating functions, number of partitions. |
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-------------------------------------------------------------------------------------------------------------- Optimal
Design of Water Distribution Networks Applying Pattern Search Algorithm with
Fuzzy Parameters Volume
2, Issue 2, Pages: 63-70 | [Full Text] PDF (165 KB) |
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Mohammad
Kangazian1, Amid Hadi1, 2, Mohammad Javad
Hashemi1, 2 |
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1-
Department of Civil Engineering, Shahid Bahonar University, Kerman, Iran. 2-
Member facticity of Civil and Environment
Engineering, Jami Institute of Technology, Isfahan, Iran. |
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Abstract — Water distribution
network optimization has been among the most significant issues that
scientists have ever regarded it highly and have done their best to cut the
expenses by taking hydraulic constraints into consideration. Accordingly,
regardless of the uncertainty in the parameters of network design,
optimization seems something unreal. Regarding the attempts made by other
scientists to simulate the uncertainties in different systems; in this study,
the Fuzzy method is used to model uncertainty in fuzzy uncertainty. Also, the
Pattern Search of algorithm is used for optimizing water distribution network
devices. By considering Friction coefficient in Darcy-Weisbach
equation, a demand in nodes, and tank head as independent fuzzy parameters we
can study cost variations, heads in nodes, velocity, and discharge pipes
which are known as dependent fuzzy parameters. |
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Keywords —
Optimization,
Fuzzy parameter, Pattern of search, Water distribution network |
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-------------------------------------------------------------------------------------------------------------- Field
Investigation of Metro Rolling Noise Volume
2, Issue 2, Pages: 71-76 | [Full Text] PDF (430 KB) |
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Javad Sadeghi1, Araz Hasheminezhad2* |
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1-
Centre of Excellence in Railway Transportation, 2-
M.Sc of Railway Engineering, School of Railway
Engineering, Iran University of Science and Technology, Narmak,
16844, Tehran, Iran. |
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Abstract — This paper
presents a field study on railway noise measurement in a tight curve and a tangent
track of Tehran Metro Network in Iran. Nowadays as railway and metro tracks
often pass through densely populated areas, especially in central parts of
big cities, noise is usually the most common reason given for objecting to
railway developments. As a result, significant progress has been made in
noise control over the last decades. More recently, high interest was given
to measuring railway noise and understanding the different sources
contributions in order to help reducing global external noise. In this
research, sections of Tehran Metro Network, which are located near a high
resident people density area with a limited but significant traffic, were
selected. In these sections, railway noise seemed to have been tolerated in
the past, but is today increasingly being considered as a nuisance for the
residents. Noise generated by the railway vehicle was recorded by field tests
based on the acoustic standard ISO 3095. Measured noise levels in two
different test sections including the tangent track and the curve have been
evaluated and compared. Furthermore, metro rolling noise has been detected
and separated using band-pass filtering. |
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Keywords — Field Tests, Noise
Sources, Rolling noise |
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