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Issue Info: 
  • Year: 

    2015
  • Volume: 

    17
  • Issue: 

    3 (66)
  • Pages: 

    105-113
Measures: 
  • Citations: 

    0
  • Views: 

    1385
  • Downloads: 

    0
Abstract: 

Introduction: This study touches on identification of Sea STARS and Brittle STARS species in coast of Chabahar Gulf in the Oman Sea, IR. During November 2008 to September 2009.Method study: The area of study was at the farthest end of south east of Iran in province of Sistan and Balouchestan. Samplings were randomly done bimonthly during low tide from 5 stations, by using 1m×1m quadrate. Then, samples were counted, identified.Results: The results showed that 7 species of echinodermata including: Aquilonastra burtonii, Astropecten phragmorus, Astropecten hemprichi, Macrophiothrix elongate, Macrophiothrix cheneyi from 2classes Asteroidea and Ophiuroidea and from 3orders Spinulosa, Paxillosida, Ophiurida and 3 families Asterinidae, Astropectinidae, Ophiotrichidae. Discussion and Conclusion: Aquilonastra burtonii attendance was in all of the stations with the exception of station 5. Astropecten phragmorus was found in stations 2 and 4 and Astropecten hemprichi in stations 4 and 5. Macrophiothrix cheneyi and Macrophiothrix elongata were seen in stations 2, 3 and 4.

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Writer: 

ABDI A.

Issue Info: 
  • Year: 

    2012
  • Volume: 

    43
Measures: 
  • Views: 

    142
  • Downloads: 

    91
Abstract: 

ORDER STARS HAVE BECOME A FUNDAMENTAL TOOL FOR THE UNDERSTANDING OF ORDER AND STABILITY PROPERTIES OF NUMERICAL METHODS FOR ORDINARY DIFFERENTIAL EQUATIONS. ORDER ARROWS WERE ORIGINALLY PROPOSED TO COMPLEMENT THE USE OF ORDER STARS. THIS SURVEY RETRACES THEIR DISCOVERY AND PRINCIPAL ACHIEVEMENTS.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2015
  • Volume: 

    46
Measures: 
  • Views: 

    152
  • Downloads: 

    113
Abstract: 

WE DISCUSS COVERING PROPERTIES IN TOPOLOGICAL SPACES DEFINED BY STARS. SPECIAL ATTENTION IS PAID TO TWO STAR COVERING PROPERTIES RELATED TO THE GERLITS-NAGY PROPERTY GN. SOME EXAMPLES IN THIS CONNECTION ARE GIVEN.

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Author(s): 

SARFI M.R.

Issue Info: 
  • Year: 

    2007
  • Volume: 

    1
  • Issue: 

    2
  • Pages: 

    103-124
Measures: 
  • Citations: 

    2
  • Views: 

    1506
  • Downloads: 

    0
Abstract: 

The present article investigates Molavi’s special point of view concerning heavens and STARS and the way they are linked with his mystical thoughts and moral instructions. To achieve this purpose, the document searching approach is applied to gather information and analytic, descriptive approach is used for analysing data. A major finding is that Molavi has formed some aspects of his own complex symbolism by using mysterious heaven by creating various semantic features and countless ambiguities. This is to some extent based on the Quran’s instructions and shows Molavi’s attitude towards the sky as one of God’s important signs and thus as a delibaratable and expedient case.

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Issue Info: 
  • Year: 

    2006
  • Volume: 

    30
  • Issue: 

    B4 (CIVIL ENGINEERING)
  • Pages: 

    541-554
Measures: 
  • Citations: 

    0
  • Views: 

    1027
  • Downloads: 

    191
Abstract: 

BRI-STARS (Bridge Stream Tube model for Alluvial River Simulation) program was used to investigate the scour depth around bridge piers in some of the major river systems in Iran. Model calibration was performed by collecting different field data. Field data are cataloged on three categories. The first group of bridges having river beds formed by fine material (i.e., silt and lay), the second group of bridges having river beds formed by sand material, and finally, bridges having river beds formed by gravel or cobble materials. Verification involved application and comparison of the model to different known real-life cases. The results of this comparison determine the validity and quality of the calibration. Verification was performed with some field data in Fars Province. The scour depths of various bridges located in Iran during significant floods were calculated. The bridges are located in three different locations with different bed materials such as: the Ghadir Bridge on the Zayanderood River, the Khan Bridge River and the Chame Sohrabkhani Bridge on Kor. Results show that for wide piers, computed scour depth is more than the measured depth. In gravel bed streams, the computed scour depth is also greater than measured scour depth, the reason is due to the formation of the armor layer on the bed of the channel. Once this layer is eroded, the computed scour depth is close to the measured one.

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Author(s): 

CHAWUCHIAN HASSAN | HOSSEINEE RASHTABADI SEYED JAVAD

Issue Info: 
  • Year: 

    2011
  • Volume: 

    3
  • Issue: 

    4 (12)
  • Pages: 

    59-84
Measures: 
  • Citations: 

    0
  • Views: 

    2113
  • Downloads: 

    0
Abstract: 

Change in social relations may challenge superiority of men over women; so men will need an ideology that reestablishes their superiority whenever such “crisis tendencies” happen. This ideology recommends an “Ideal Masculinity” and reestablishes “normal” pattern of manhood. Rawean Connell dubs it as “Hegemonic masculinity” (HM) and believes that because of endless pressure of illegitimating factors, “HM” will be in change forever. By application of the Connell's theories and Weberian qualitative approach, first of all a “basic ideal type of masculinity” was constructed from encouraged religious-revolutionary values in the movies and propaganda of the first years after revolution; then masculine values which were celebrated and admired in the best seller movie of every year during 1979_2007, were compared by this “basic ideal type”. Comparison of the 32 concluded “ideal types” indicated that serious interruption took place in three years (1989, 1997, and 2002). Then ideal type of each era was constructed and was compared with each other. Results of this comparison approve Connell's theory about changeability of the HM in accordance with the social changes.

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Author(s): 

RAHIMI ARDABILI M.Y.

Issue Info: 
  • Year: 

    2003
  • Volume: 

    14
  • Issue: 

    4
  • Pages: 

    363-365
Measures: 
  • Citations: 

    0
  • Views: 

    849
  • Downloads: 

    135
Abstract: 

The linear adiabatic pulsation-periods of Mira variable STARS have been derived. Approximately 2701†models were calculated for M = 0.7 MΘ to 2 MΘ STARS with radii from 180 RΘ to 340 RΘ and luminosities from 2800 LΘ to 10,000 LΘ. The chemical composition of all models is (X,Z) = (0.7,0.02). From the result of this study, linear relations on Luminosity-Period-Mass relationship and luminosityperiod- radius-mass relationship have been derived for the fundamental mode. The relation has been tested on a recent data set of Mira STARS in the LMC.

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Author(s): 

KAZZAZI MIR JALALEDDIN

Issue Info: 
  • Year: 

    2010
  • Volume: 

    1
  • Issue: 

    3
  • Pages: 

    10-17
Measures: 
  • Citations: 

    0
  • Views: 

    1248
  • Downloads: 

    0
Abstract: 

The Ziggurat was built as a place of worship.It has been suggested that the ziggurat was a symbolic representation of the primeval mound upon which the universe was thought to have been created. The ziggurat may have been built as a bridge between heaven and earth. The temples of the Sumerians were believed to be a cosmic axis, a vertical bond between heaven and earth, and the earth and the underworld, and a horizontal bond between the lands. Built on seven levels the ziggurat represented seven heavens and planes of existence, the seven planets and the seven metals associated with them and their corresponding colors. In the pre s ent article, the paradigm that The Seven Beauties (Haft Paykar) of Nezami has been inspired from seven STARS of Ziggurat has been discussed.

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Author(s): 

Riahi R. | Kalantari S.Z.

Issue Info: 
  • Year: 

    2021
  • Volume: 

    21
  • Issue: 

    4 (پیاپی 86)
  • Pages: 

    765-774
Measures: 
  • Citations: 

    0
  • Views: 

    100
  • Downloads: 

    21
Abstract: 

Using the density-dependent equation of states to describe the matter of rotating neutron STARS, we construct equilibrium configurations of rotating neutron STARS. The interaction between baryons is described by exchanging the scalar and vector mesons in the relativistic mean-field theory. The mesons coupling coefficients are functions of the environmental density. The sequence of equilibrium states is calculated for the four frequencies observed for rotating neutron STARS namely, 25, 317, 716, and 1122 Hz. These sequences are constrained by static, Keplerian (mass-shedding sequence), and secular axisymmetric instability sequences. This allows the radius and mass range of the STARS will be obtained in each of the models. We can also calculate the parameters of the fastest rotating star described by each model.

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Author(s): 

ZAMANI MINA | BIGDELI MOHSEN

Issue Info: 
  • Year: 

    2019
  • Volume: 

    6
  • Issue: 

    1
  • Pages: 

    9-23
Measures: 
  • Citations: 

    0
  • Views: 

    156
  • Downloads: 

    158
Abstract: 

In this work, we review the formalism which would allow us to model magnetically deformed neutron STARS. We study the e ect of di erent magnetic eld con gurations on the equation of state (EoS) and the structure of such STARS. For this aim, the EoS of magnetars is acquired by using the lowest order constraint varia-tional (LOCV) method and employing the AV18 potential. We show how the magnetic eld varies from the surface to the center of neutron star by using various exponential and polynomial pro les and compare their results. In addition, global properties of neutron STARS are obtained within two formalisms. The rst formalism is described by considering the pressure into two directions and the deformation of neutron STARS is governed by anisotropies in the equation of state. The second formalism for in-vestigating macroscopic properties of magnetars is gained by treating the nonuniform pressure as a perturbation to the total pressure and expanding metric and pressure up to the quadrupole term in spherical harmonics. Afterwards, we include three nucleon interactions (TNI) to the EoS and apply this model to represent our results for both exponential and polynomial magnetic eld pro les. The maximum gravitational mass is obtained in the range of (1. 71-1. 80) M and (2. 13-2. 19) M for the EoS without and with TNI contribution, respectively.

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