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Search Results: 1 - 10 of 2311 matches for " Alizadeh Karim "
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Effect of forced swimming stress on count, motility and fertilization capacity of the sperm in adult rats
Saki Ghasem,Rahim Fakher,Alizadeh Karim
Journal of Human Reproductive Sciences , 2009,
Abstract: Aims: The purpose of this study was to determine whether 50 days of forced swimming stress applied to adult male rats affects count, motility and fertilization capacity of sperm. Settings and Design: It is a prospective study designed in vitro. Materials and Methods: A total 30 adult male wistar rats were used in this study. All rats were divided into two equal groups (n = 15): (1) control group and (2) experimental group. Animals of the experimental group were submitted to force swimming stress for 3 min in water at 32°C daily for 50 days. Then, all male rats were sacrificed, the right epididymides were removed and sperm concentration and motility were determined. The sperm suspension was added to the ova. Fertilization capacity was assessed by counting two-cell embryos 24-26 h after completion of fertilization in vitro. Statistical Analysis Used: Data are reported as mean ± SD and percentage. The difference between the control and experimental groups was determined by the unpaired t-test. Results: The mean and standard deviation of sperm concentration in the control and experimental groups were 60.8 ± 9.3 10 6 /ml and 20.4 ± 5.3 10 6 /ml, respectively. There was a statistical difference of P < 0.05 between the two groups in terms of sperm concentration. The percentage of motility in the experimental group was significantly different ( P < 0.05). The same results were obtained in case of fertility ( P < 0.05). Stress caused by forced swimming was observed by a significant increase in the latency of the pain response in the hot-plate test ( P < 0.05). Conclusions: These results suggest that forced swimming stress in time course equal or more than spermatogenesis period, i.e. 48-50 days in the rat will be significantly effective to reduce the number and motility of sperms as well as the fertilization capacity.
Non-Diapiric Salt Domes in the West Zanjan, Central Iran  [PDF]
Sina Alizadeh
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.72009
Abstract: The salt domes of the west Zanjan (Central Iran) are the most important structures in the study area. They have been formed by the uplifting and erosion together under low humidity and dry and warm climate condition. The salt rocks with near to 200 meters thickness are related to lower member of the Upper Red Formation (Early Miocene) that deposited in the inverted back arc basin. They have been formed in the Central Iran basin after the Arabian-Eurasian convergence. Based on filed works and preparation of geologic map, salt domes have been cropped out during regional uplifting and erosion along hinge zone of a longitudinal anticline. Also, there is no evidence for salt diapirism and so, they are different from some salt diapirs in the southwestern margin of Zanjan that is investigated by other researchers.
Alteration in T-Cell Cytokine Production by Vitamin A and Zinc Supplementation in Mice  [PDF]
Sorayya Kheirvari, Mohammad Alizadeh
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.38141
Abstract: Simultaneous zinc and vitamin A deficiency are common health problems in developing countries. The objective of this study was to assess effect of supplementation of high zinc or vitamin A on immune function. After three months of feeding with a zinc and vitamin A deficient diet, mice were assigned into four groups which, for additional two months, received a normal or high zinc along with vitamin A deficient diet and a normal or high vitamin A along with zinc deficient diet. Serum and intestinal mucosa immunoglobulin A (IgA) were determined and supernatants of splenocytes were used to assess interlukin (IL)-2, IL-5, IFN-γ. Mice maintained on zinc deficient diet with normal or high vitamin A resulted in significantly lower production of IFN-γ. Also, supplementation of high dose vitamin A augmented production of the cytokine as compared to normal intake of the vitamin. Supplementation of either normal or high zinc along with low vitamin A diet significantly led to higher production of IFN-γ as compared to those receiving zinc limited but adequate vitamin A. High intake of zinc along with vitamin A deficient diet significantly enhanced secretion of IL-2. Levels of serum and mucosal IgA and IL-5 were not be significantly modulated. Moreover, animals fed with high doses of zinc showed increased IL-2 production than those that had normal intake of zinc. Results indicated that zinc and vitamin A supplementation up-regulates production of T-cell cytokines, IFN-γ and IL-2.
Rule of Structural Factors in Formation of Porphyry Copper Deposits in South Western Part of Kerman Area, Iran  [PDF]
Hasan Alizadeh, Mehran Arian
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.57045
Abstract: Kerman area is located in southern parts of central Iranian volcanic belt. The area under study is located in the southern part of this complex copper mineralization in the area, which is mainly porphyry type and is associated with extensive hydrothermal alteration. This area has a great potential as far as tertiary porphyry copper deposits are concerned. To the exploration of porphyry copper deposits in study area, we have analyzed the lineaments. The lineaments interpreted out from ETM + (band8) data is recognized as another method for locating porphyry type copper mineralization. There is a close correlation between photo lineament factor values and the known copper mineralization in the area. The relationship between 16 porphyry copper deposits with faults and fractures in the area is studied. Photo lineament factor assessments by using satellite photos indicate a strong relationship between a number of lineation intersection in each cell refer to an amount of average lineation in whole map (c/C ratio). In the study area, ratio of c/C even has more relationship refers to PF factor that has previously described in the papers.
Conceptual Analysis and Fieldwork in Macroeconometric Methodology: Modeling Unemployment, Inflation and Production  [PDF]
Karim Errouaki
Technology and Investment (TI) , 2014, DOI: 10.4236/ti.2014.53015
Abstract:

The recent failure of commonly accepted, inductive, econometric models to provide insights into real, macroeconomic phenomenon during economic crises has provoked a debate concerning contemporary econometric methodology. Based on the foundations laid by Haavelmo, and Hollis and Nell, an assessment of Edward J. Nell’s (1998) “unifying methodological framework” (UMF) is offered. Nell’s UMF places socioeconomic institutions and interdependencies, and technological realities as basis of analysis. Using “conceptual analysis” and “fieldwork” Nell presents an alternative to generally accepted, mainstream, econometric methodology. The purpose of this paper is to look at some examples of the way, and this can help develop useful theory and improve macroeconometric model building. Applying Nell’s UMF to unemployment, inflation, and production reveals a methodological advance that promises more realistic insights into macroeconomic phenomena than is offered by contemporary, mainstream, econometric models.

(2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline-κ2N,N′)bis(thiocyanato-κS)mercury(II)
Robabeh Alizadeh
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809023228
Abstract: In the molecule of the title compound, [Hg(NCS)2(C26H20N2)], the HgII atom is four-coordinated in a distorted tetrahedral configuration by two N atoms from a chelating 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline ligand and by two S atoms from two thiocyanate anions. The ligand ring system is not planar. The dihedral angle between the phenyl rings is 53.20 (3)° . In the crystal structure, π–π contacts between phenanthroline rings [centroid–centroid distance = 3.981 (1) ] may stabilize the structure.
Mixed cropping of annual feed legumes with barley improves feed quantity and crude protein content under dry-land conditions
Khoshnood Alizadeh
Maejo International Journal of Science and Technology , 2013,
Abstract: The objective of this research is to determine a suitable mixture of annual feed legumes and barley as a winter crop under dry-land conditions. Seeds of Hungarian vetch (cv. 2670), smooth vetch (cv. Maragheh), and local varieties of grass pea and field pea were mixed with barley (cv. Abidar) in a 1:1 ratio and were tested, along with related monoculture. All legumes in the mixture survived winter while legumes alone, except Hungarian vetch, did not survive in the cold areas. The maximum fresh and dry forage yields (56 and 15 ton ha-1 respectively) were obtained from a mixture of smooth vetch and barley in provinces with mild winter and more than 400 mm of rainfall. The mixture of barley and smooth vetch resulted in the highest mean crude protein content (17%). Autumn seeding of smooth vetch and barley in a 1:1 ratio produced more than 2 ton ha-1 of dry biomass with good quality in all studied areas and thus could serve as an alternative cropping system after wheat/barley in cold and semi-cold dry land.
Some algorithms for normality testing irreducible polynomials and computing complexity of the normal polynomials over finite fields
M. Alizadeh
Applied Mathematical Sciences , 2012,
Abstract:
Prevalence of Subcallosal Striation as A Radiologic Finding in Multiple Sclerosis Patients Sagital with FLAIR MR Imaging
A. Alizadeh
Iranian Journal of Radiology , 2008,
Abstract: Background/Objective: Multiple sclerosis is one of the debilitating neurological diseases. MRI findings play a major role in diagnosis of diseases, but unfortunately are non-specific. This study was conducted to deter-mine the prevalence of Subcallosal Striation as an early MR finding in MS patients."nPatients and Methods: In this case series, patients re-ferred to our imaging center, Poursina hospital, Rasht, Guilan University of medical sciences with multiple Sclerosis, selected with census method, were studied. For evaluation of subcallosal striation, sagital FLAIR imaging, added to routine MR studies of the brain. The images were reviewed for presence of sub-callosal striation which is linear 1-2 mm thick foci of hyperintensities, perpendicular to epandyma, like stack of coins. Data were reviewed in Excel program and descriptive statistical indicators were extracted."nResults: Most of the patients with Multiple Sclerosis (more than 90%) had subcallosal striations. Also we found pericallosal region, subcortical region, hemi-spheric white matter, posterior fossa, brain stem, proximal cervical spinal cord and optic nerves as the most common locations for MS plaques."nConclusion: Subcallosal Striation is a common early radiological finding in MS patients and could help us in differential diagnosis of the disease.
Role of VCUG in Secondary Vesicoureteral Reflux
H Alizadeh
Iranian Journal of Radiology , 2009,
Abstract: "nVesicoureteral reflux (VUR) still remains one of the most common causes of severe renal damage or sometimes end-stage kidneys in children. Although in some cases prenatal suggestion may happen, especially in secondary VUR, most of them are detected during childhood after episodes of urinary tract infection. "nDespite new modern imaging modalities in the recent years, standard VCUG still has an important role in the evaluation of voiding dysfunction, primary and secondary VUR. "nParticularly in male children it is mandatory for the evaluation of lower urinary tract. "nThis article is a review that describes the proper technique of VCUG, normal variations and some common pathological findings in secondary VUR.
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