The ichthyofauna of headwaters of three riverine systems in Kohgiluyeh and Boyer-Ahmad Province in southwest of Iran
R.
Zamaniannejad
Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
author
H. R.
Esmaeili
Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran
author
O.
Tabiee
Department of Natural Resources, Arsanjan Branch, Islamic Azad University, Arsanjan, Iran
author
text
article
2015
eng
This study was conducted to determine taxonomic feature of fishes from the headwaters of three riverine systems in Kohgiluyeh and Boyer-Ahmad province (K & B) in southwestern Iran during 2011 to 2013. Fifteen species belonging to 4 families, and 3 orders from the Karun river system, 10 species belonging to 4 families and 3 orders from the Zohreh river system and 8 species belonging to 2 families and 2 orders from the Jarrahi river system were identified. In total 19 species were collected, including 14 natives, 4 endemics and 1 exotic.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
117
121
https://ijsts.shirazu.ac.ir/article_3008_617c61bd3c1782c4be36dcbc8bea048f.pdf
dx.doi.org/10.22099/ijsts.2015.3008
The relationship between the satellite-based Index and Standard Precipitation Index, on Different land covers
B.
Arastoo
Semnan Agriculture and Natural Resources Research Center, Iran
author
text
article
2015
eng
The Normalized Difference Vegetation Index (NDVI) derived from the SPOT 4 satellite has been widely used to monitor moisture-related vegetation condition. The relationship between vegetation and climate index, however, is complex and has not been adequately studied with satellite sensor data. To better understand this relationship, an analysis was conducted on time series of monthly NDVI (1999–2009) during the growing season in the Semnan province. The NDVI was correlated to the Standardized Precipitation Index (SPI), a multiple-time scale meteorological-drought index based on precipitation. The 3 and 24 month SPI were found to have the best correlation with NDVI, indicating lag and cumulative effects of precipitation on vegetation, but the correlation between NDVI and SPI varies significantly between months. Results show that combining NDVI and a climatic index is a suitable method for estimating land cover changes. Steppe range land or class 7 in all stations had a higher correlation between NDVI and SPI. Land covers with vegetation have significant correlations in spring and summer months. The highest correlations occurred during the middle of the growing season, and lower correlations were noted at the beginning and end of the growing season in most of the area. A stepwise regression model showed that the relationship between the NDVI and SPI was significant in both rangelands and forest.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
123
127
https://ijsts.shirazu.ac.ir/article_3009_b205f649b6ad525a966a511fffd369e5.pdf
dx.doi.org/10.22099/ijsts.2015.3009
Aluminium dodecyl sulfate trihydrate [Al(DS)3].3H2O: An efficient Lewis acid-surfactant-combined catalyst for synthesis of 1,8-dioxo-octahydroxanthens and 1,8-dioxo-decahydroacridines
S.
Firoozi
3Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran
author
A.
Hasaninejad
Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran
author
T.
Yousefy
Department of Chemistry, Islamic Azad University, Gachsaran, Iran
author
text
article
2015
eng
An efficient synthesis of 1, 8-dioxo-octahydroxanthens and 1, 8-dioxo-decahydroacridines from the reaction of 5,5-dimethyl-1,3-cyclohexanedione (dimedone) with aromatic aldehydes bearing electron-donating or withdrawing substituents either in the presence or absence of primary amines has been described in a single pot using a catalytic amounts of aluminum tris (dodecyl sulfate) trihydrate [Al(DS)3·3H2O] as a Lewis acid-surfactant-combined catalyst. Both reactions occurred at 80 oC. 1, 8-dioxo-octahydroxanthens has been synthesized under solvent-free conditions and water is used as a green solvent for the synthesis of 1, 8-dioxo-decahydroacridines. This methodology offers several advantages such as very simple work-up procedure, short reaction times, and mild reaction conditions.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
129
140
https://ijsts.shirazu.ac.ir/article_3010_3dd7645f8b7ba778acaee90a7b5d582d.pdf
dx.doi.org/10.22099/ijsts.2015.3010
Changes in plasma vitellogenin, phosphorus and calcium in wild-caught female carp (Cyprinus carpio) as potential criteria for selecting brood-fish for restocking natural populations
A.
Vazirzadeh
Department of Natural Resources and Environment, College of Agriculture,
Shiraz University, Shiraz, 71441–65186, Iran
author
A.
Imani
Department of Fisheries, Faculty of Natural Resources, Urmia University, Urmia, Iran
author
M.
Naseri
Department of Natural Resources and Environment, College of Agriculture,
Shiraz University, Shiraz, 71441–65186, Iran
author
text
article
2015
eng
Despite two decades of artificial spawning of wild carp (Cyprinus carpio) to rehabilitate natural populations in the southeastern Caspian Sea, there are still no appropriate physiological criteria for selecting competent brooders during induced spawning. To this end, the plasma concentrations of vitellogenin (Vtg), phosphorus (P) and calcium (Ca) were measured during ovarian development, as potential criteria for selecting ripe brooders. Vtg was measured by ELISA using pure carp Vtg and its specific antibody. P and Ca contents of plasma samples were also determined photometrically and colorimetrically, respectively, by Autoanalyzer using commercial specific kits. The plasma levels of Vtg showed no significant differences during sampling times, whereas its highest significant value (922±301 μg/ml) was recorded in late vitellogenesis (P≤0.05). The plasma concentrations of Ca also showed no significant differences in different stages of ovarian development except for late vitellogenesis (16.65±1.77mg/dl) and during sampling times except for June (17.24±1.76mg/dl) that rose to its peak. The plasma levels of P increased gradually during sampling times and reached maximum value in June (35.22±11.12mg/dl). Level of P also increased gradually during ovarian growth and peaked at late vitellogenesis (33.94±8.02mg/dl) and slowly decreased afterward. The regression analysis indicated that plasma P levels showed a high correlation with plasma Vtg concentrations. Therefore due to easier and lower cost of plasma P measurement in fish in comparison with Vtg, measurement of plasma P levels is recommended as criterion for selecting ripe females for artificial spawning.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
141
146
https://ijsts.shirazu.ac.ir/article_3011_2cbf5eff1a98c7667be8a3570eccb4b2.pdf
dx.doi.org/10.22099/ijsts.2015.3011
Estimating the Engineering Properties of Building Stones after Freeze-thaw using Multiple Regression Analysis
A.
Jamshidi
Department of Geology, Tarbiat Modares University, Tehran, P.O. Box: 14115-175, Iran
author
M. R.
Nikudel
Department of Geology, Tarbiat Modares University, Tehran, P.O. Box: 14115-175, Iran
author
M.
Khamehchiyan
Department of Geology, Tarbiat Modares University, Tehran, P.O. Box: 14115-175, Iran
author
text
article
2015
eng
Freeze-thaw is one of the most powerful weathering agents that may cause a rapid change in the initial engineering properties of stones, and limit their durability. Freeze-thaw induces stress over the pores’ surface of stones. Consequently, stone durability is closely related to its engineering and physical properties. The purpose of this study is estimating the engineering properties of deteriorated stones after freeze-thaw using multiple regression analysis. For this purpose, laboratory tests were conducted on 14 different building stones, and their petrographical characteristics, and engineering and physical properties were determined as well. Then freeze-thaw action was simulated for 30 cycles, and the engineering properties of stones including Brazilian tensile strength, point load index and P-wave velocity were determined. The statistical models for estimating the engineering properties after freeze-thaw were developed by multiple regression analysis. The models were validated by statistical tests, and the results showed that engineering properties of stones can be estimated after freeze-thaw using their initial engineering and physical properties with good accuracy.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
147
163
https://ijsts.shirazu.ac.ir/article_3012_65b65466fe078930addfda8b46cd5f73.pdf
dx.doi.org/10.22099/ijsts.2015.3012
The Kasian volcanic rocks, Khorramabad, Iran: Evidence for a Jurassic Intra-Oceanic island arc in Neo-Tethys ocean
Zarasvandi
A.
Department of Geology, Faculty of Earth Science, Shahid Chamran University (SCU), Ahvaz, Iran
author
M.
Rezaei
Department of Geology, Faculty of Earth Science, Shahid Chamran University (SCU), Ahvaz, Iran
author
D.
Lentz
Department of Earth Sciences, University of New Brunswick, New Brunswick, Canada
author
Pourkaseb
H.
Department of Geology, Faculty of Earth Science, Shahid Chamran University (SCU), Ahvaz, Iran
author
M.
Karevani
Department of Earth Sciences, University of New Brunswick, New Brunswick, Canada
author
text
article
2015
eng
The Kasian volcanic body is located in the eastern margin of the Zagros thrust belt, close to the Sanandaj-Sirjan metamorphic zone. These volcanic rocks are mainly composed of andesite and andesite-basalt rocks with porphyritic, hypocrystalline porphyritic, hyalo-porphyritic and hyalo-microlitic porphyritic textures. Analyses of the distributions of major, rare earth and trace elements reveal a tholeiitic nature and evidence such as enrichment of Pb and LILE (e.g., U, Rb, Ba), depletion in HFSE (e.g., Nb, Ti, Y), slight enrichment of LREE relative to HREE and trace elements discrimination plots reveal island arc affinity for the Kasian volcanic rocks. Some characteristics like, low Nd/Pb and Ce/Pb values (average 8.76 and 12.70, respectively), high U values and low Nb/U ratios (average 3.52) indicate enrichment of mantle wedge by contribution of slab-derived fluids during dehydration of subducting slab of Neo-Tethys oceanic lithosphere. Moreover, the results show these volcanic rocks to have fractionated as they ascended to higher crustal levels. The results of this study are consistent with the new tectonic scenario for the Sanandaj-Sirjan zone, which suggests that during ocean–ocean subduction (from Jurassic to Cretaceous) an immature island arc developed before the closure of Neo-Tethys ocean.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
165
178
https://ijsts.shirazu.ac.ir/article_3013_9e5abcb0f0f30ec01fe78fc03e2f3d75.pdf
dx.doi.org/10.22099/ijsts.2015.3013
Chemoselective preparation of acylals using 1-methyl-3-(2-(sulfooxy)ethyl)-1H-imidazol-3-ium chloride as an efficient and reusable catalyst
S.
Rezayati
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
S.
Sajjadifar
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Iran
author
R.
Hajinasiri
Chemistry Department, Qaemshahr Branch, Islamic Azad University, PO BOX 163, Qaemshahr, Iran
author
text
article
2015
eng
An efficient and chemoselective procedure for the preparation of 1, 1-diacatates (acylals) from various aldehydes with acetic anhydride in the presence of Brønsted acidic ionic liquid [Msei]Cl as a reusable catalytic system under solvent-free condition at room temperature and short periods of times with excellent yields will be described. The catalyst was easily separated in simple work-up and was recycled several times without loss of reactivity under the described reaction conditions.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
179
185
https://ijsts.shirazu.ac.ir/article_3017_93d54b7ed93e888cb5b4da34b43b5e79.pdf
dx.doi.org/10.22099/ijsts.2015.3017
Platinum(II) and Palladium(II) complexes with 1,10-phenanthroline and pyrrolidinedithiocarbamato ligands: synthesis, DNA-binding and anti-tumor activity in leukemia K562 cell lines
S.
Shahraki
Department of Chemistry, University of Zabol, Zabol, Iran
author
H.
Mansouri-Torshizi
Department of Chemistry, University of Sistan & Baluchestan, Zahedan, Iran
author
A.
Heydari
Department of Chemistry, University of Zabol, Zabol, Iran
author
A.
Ghahghaei
Department of Biology, University of Sistan & Baluchestan, Zahedan, Iran
author
A.
Divsalar
Department of Biological Sciences Tarbiat Moallem University, Tehran, Iran
author
A. A.
Saboury
Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
author
H.
Ghaemi
Islamic Azad University, Gonabad Branch, Gonabad, Iran
author
M.
Doostkami
Department of Chemistry, University of Zabol, Zabol, Iran
author
S.
Zareian
Department of Chemistry, University of Zabol, Zabol, Iran
author
text
article
2015
eng
Two newly-created water-soluble complexes of palladium(II)/platinum(II)-dithiocarbamate, [Pd/Pt(phen)(pyr-dtc)]NO3 (phen = 1,10-phenanthroline and pyr-dtc = pyrrolidinedithiocarbamate) were synthesized. Also, their chemical characteristics are reported in the current research paper. In these complexes, the dithiocarbamato ligand coordinates to Pt(II) or Pd(II) center with two sulfur atoms as bidentate. They were examined for their cytotoxic properties against chronic myelocytic leukemia K562 cell lines. These complexes showed 50% cytotoxic concentration (Cc50) values much lower than those of cisplatin. The interactions of the two complexes with calf thymus DNA (CT-DNA) were investigated using UV-vis absorption, fluorescence emission, ethidium bromide displacement and gel filtration techniques. The results suggest that these complexes cooperatively bind with and denature the DNA at low concentrations and interact with CT-DNA in the intercalation mode. Gel filtration studies indicate that the binding of complexes with DNA is strong enough not to break readily.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
187
198
https://ijsts.shirazu.ac.ir/article_3018_303a8d93f32cec188e94b08016123309.pdf
dx.doi.org/10.22099/ijsts.2015.3018
Ground state properties of liquid π―ππ in the presence of magnetic field
G. H.
Bordbar
Department of Physics, Shiraz University, Shiraz 71454, Iran
author
M. T.
Mohammadi Sabet
Department of Physics, Shiraz University, Shiraz 71454, Iran
author
M.
Dehghani
Department of Physics, Shiraz University, Shiraz 71454, Iran
author
text
article
2015
eng
The ground state properties of liquid π»π3 in the presence of magnetic field have been investigated. In our calculations, we have employed a variational many-body formalism using the Lennard-Jones and Aziz inter-atomic potentials. For this system, we have also computed the magnetization in magnetic fields up to 200 T. Our results show no ferromagnetic phase transition induced by the magnetic field. Here, a comparison has also been made between the results of the Lennard-Jones and Aziz potentials.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
199
204
https://ijsts.shirazu.ac.ir/article_3019_fd76399331b631d95500cf2c996dd192.pdf
dx.doi.org/10.22099/ijsts.2015.3019
An improved mixed order model for describing thermoluminescence glow curves
M.
Zahedifar
TL Lab, Department of Physics, University of Kashan, Kashan, Iran
author
S.
Harooni
TL Lab, Department of Physics, University of Kashan, Kashan, Iran
author
text
article
2015
eng
An improved mixed order model is presented to describe the thermolumunescence (TL) glow peaks. In this model a fraction of charge carriers, which undergo nonradiative recombination following thermal excitation is taken into account. Therefore, it is expected that the proposed model will produce more realistic kinetic parameters than that of mixed order model. The TL glow curves generated by the proposed model are fitted to the glow curves of general order and mixed order models using a curve fitting program. The results are presented and discussed.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
205
212
https://ijsts.shirazu.ac.ir/article_3020_c6fe70cd6d5dec53fbdd1125f5cecc76.pdf
dx.doi.org/10.22099/ijsts.2015.3020
Comultiplication lattice modules
F.
Callialp
Department of Mathematics, Beykent University, Ayazaga-Maslak, 34396, Istanbul, Turkey
author
U.
Tekir
Department of Mathematics, Marmara University, Ziverbey, P.K.34722, Göztepe, Istanbul, Turkey
author
G.
Ulucak
Department of Mathematics, Gebze Institute of Technology, P.K.141 41400 Gebze-Kocaeli, Turkey
author
text
article
2015
eng
Let π be a lattice module over the multiplicative lattice πΏ. π is said to be a comultiplication πΏ-module if for every element π of π there exists an element π∈πΏsuch that π(0π:ππ. Our objective is to investigate properties of comultiplication lattice modules.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
213
220
https://ijsts.shirazu.ac.ir/article_3021_a6678caded75997a2a2661f54c0f859e.pdf
dx.doi.org/10.22099/ijsts.2015.3021
An investigation of Radial Basis Function approximation methods with Application in Dynamic Investment Model
A.
Golbabai
Department of Mathematics, Iran University of Science and Technology, Narmak, Tehran, Iran
author
A.
Saeedi
Department of Mathematics, Iran University of Science and Technology, Narmak, Tehran, Iran
author
text
article
2015
eng
The present study is an attempt to investigate some features of Radial Basis Functions (RBFs) approximation methods related to variational problems. Thereby authors applied some properties of RBFs to develop a direct method which reduces constrained variational problem to a static optimization problem. To assess the applicability and effectiveness of the method, some examples are examined. Dynamic investment problem with free endpoint in unbounded domain is solved, accordingly the effectiveness of the proposed method is verified. To improve the accuracy and stability of the method we have used various shape parameter strategies with equally spaced and scattered centers. Finally, two new shape parameter strategies are proposed and then it is shown that the proposed strategies increase the accuracy and stability of the method.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
221
231
https://ijsts.shirazu.ac.ir/article_3022_4362446d34984cb3085bbaf11b7437d4.pdf
dx.doi.org/10.22099/ijsts.2015.3022
On the characteristic of projectively invariant Pseudo-distance on Finsler spaces
B.
Bidabad
Faculty of Mathematics and Computer Science, Amirkabir University of Technology
(Tehran Polytechnic), Hafez Ave., 15914 Tehran, Iran
author
M.
Sepasi
Faculty of Mathematics and Computer Science, Amirkabir University of Technology
(Tehran Polytechnic), Hafez Ave., 15914 Tehran, Iran
author
text
article
2015
eng
A projective parameter of a geodesic as solution of certain ODE is defined to be a parameter which is invariant under projective change of metric. Using projective parameter and Poincaré metric, an intrinsic projectively invariant pseudo-distance can be constructed. In the present work, solutions of the above ODE are characterized with respect to the sign of parallel Ricci tensor on a Finsler space. Moreover, the Ricci tensor is used to define a Finsler structure and it is shown that, the pseudo-distance is trivial on complete Finsler spaces of positive semi-definite Ricci tensor and it is a distance on a Finsler space of parallel negative definite Ricci tensor.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
233
238
https://ijsts.shirazu.ac.ir/article_3023_d7a5d9363b2cad297ae98cb61b3088d8.pdf
dx.doi.org/10.22099/ijsts.2015.3023
On the detection and estimation of the simple harmonizable processes
M. R.
Mahmoudi
Department of Statistics, Shiraz University, Shiraz, Iran, 71454
author
A. R.
Nematollahi
Department of Statistics, Shiraz University, Shiraz, Iran, 71454
author
a. R.
Soltani
Department of Statistics, Shiraz University, Shiraz, Iran, 71454
author
text
article
2015
eng
Simple harmonizable processes (SHP) introduced by Soltani and Parvardeh (2006) are a large class of nonstationary processes which includes stationary and periodically correlated (PC) processes. Detection and estimation of SHP structure are important problems when dealing with nonstationary data. In this paper, we study the spectral properties of simple processes and propose a method to detect and estimate SHP structure. As an example, we discuss the detection, estimation and prediction of periodically correlated processes. The performance of this method is investigated through extensive Monte Carlo simulations. This method is compatible with other method.
Iranian Journal of Science
Springer
2731-8095
39
v.
2
no.
2015
239
242
https://ijsts.shirazu.ac.ir/article_3024_5f980a566ae12f390b139c26ff8285a0.pdf
dx.doi.org/10.22099/ijsts.2015.3024