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Search Results: 1 - 10 of 212 matches for " Mojgan Kalantary "
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Mojgan Kalantary,Solmaz Piri
Iranian Journal of Radiology , 2012,
Abstract: The fetal biophysical profile score (BPS or BPP) re-fers to the sonographic assessment of four discrete biophysical variables:Fetal movementFetal toneFetal breathingAmniotic fluid volumeResult of nonstress testingEach of these five parameters is given a score of 0 or 2 points. Presence of these biophysical variables implies absence of significant central nervous system hypoxemia/acidemia at the time of testing. By comparison, a compromised fetus typically exhibits loss of acceleration of fetal heart rate, decreased body movement and breathing, hypotonia and less acutely, decreased amniotic fluid volume. Sonographic detection of signs of fetal compromise can allow appropriate intervention that will ideally prevent adverse fetal squeal.
Mojgan Kalantary,Firoozeh Ahmadi
Iranian Journal of Radiology , 2009,
Abstract: Sonohysterography is a valuable and simple, minimally invasive ultrasound procedure that may be used to evaluate the endometrium."n"n SHG augments the traditional TVS examination by distending the endometrial canal with saline, which allows each individual layer of endometrial lining to be evaluated separately. The single-layer evaluation made possible by SHG significantly improves detection and the characterization of focal and diffuse endometrial processes over that of TVS alone The technique involves placement of a catheter into the endometrial canal with subsequent instillation of sterile saline solution under ultrasound guidance.
Politics of Apprehension: Teaching about the Middle East in Uncertain Times
Afsaneh Kalantary
New Proposals : Journal of Marxism and Interdisciplinary Inquiry , 2009,
Abstract: This paper engages with the complex ways in which current uncertain political conditions brought on by the politics of war and terror have produced new sets of fears, anxieties and obstacles for Middle Eastern anthropologists teaching about the Middle East in general and Iran in particular in U.S. academia. Elaborating on issues pertaining to the democratic rights of academics, censorship, self-censorship, and the general parameters of academic freedom, the author hopes to raise questions and seek practical solutions to overcome the current state of apprehension.
Power Quality Consideration for Off-Grid Renewable Energy Systems  [PDF]
Mojgan Hojabri, Arash Toudeshki
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.55039

Necessity of electricity access in remote area is the main reason for expanding decentralized energy system such as stand-alone power systems. The best electrical power supply must provide a constant magnitude and frequency voltage. Therefore, good power quality is an important factor for the reliable operation of electrical loads in a power system. However, the current drawn by most of electronic devices and non-linear loads are non-sinusoidal, which can result in a poor power quality, especially in off-grid power systems. Poor power quality is characterized by electrical disturbances such as transients, sags, swells, harmonics and even interruptions in the power supply. Off-grid power systems worldwide often struggle with system failures and equipment damage due to poor power quality. In this paper, MAT- LAB/Simulink is used to model and analyses power quality in an off-grid renewable energy system. The results show high voltage transient when the inductive loads were switched OFF. The voltage and current harmonics are also determined and compared for various types of loads.

On the Cozero-Divisor Graphs of Commutative Rings  [PDF]
Mojgan Afkham, Kazem Khashyarmanesh
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.47135
Abstract: Let R be a commutative ring with non-zero identity. The cozero-divisor graph of R, denoted by\"\" , is a graph with vertices in \"\", which is the set of all non-zero and non-unit elements of R, and two distinct vertices a and b in \"\" are adjacent if and only if \"\"and \"\". In this paper, we investigate some combinatorial properties of the cozero-divisor graphs \"\"and \"\"such as connectivity, diameter, girth, clique numbers and planarity. We also study the cozero-divisor graphs of the direct products of two arbitrary commutative rings.
Tepid antegrade intermittent blood cardioplegia as an alternative for intermittent crossclamping with Lidoflazine  [PDF]
Sofia Kalantary, Anouk de Bruyn, Steven Laga, Inez Rodrigus
World Journal of Cardiovascular Diseases (WJCD) , 2013, DOI: 10.4236/wjcd.2013.37071
Abstract: Background: Blood cardioplegia is a technique with many variations in its use. Intermittent cross clamping with Lidoflazine has proven to deliver good cardioprotection in our center. Question: Is tepid (32°C) antegrade intermittent blood cardioplegia an efficient, safe and easy-to-use alternative to intermittent cross-clamping with Lidoflazine in elective isolated CABG in low-risk patients? Primary outcomes are heart enzymes (cTnI, CK-MB). Secondary outcomes are operation times, length of hospital stay, major complications and in-hospital mortality. Methods: From January 2012 until November 2012, 40 patients with LVEF ≥50%, EuroSCORE II <3.5% and no severe systemic disease underwent elective CABG and were consecutively randomized to intermittent cross-clamping (ICC; n = 20) or blood cardioplegia (BCP; n = 20). All were operated on by the same surgeon. Results: There were no significant differences in age (BCP 65.34 ± 9.76; ICC 65.25 ± 8.42) and EuroSCORE II (BCP 1.25 ± 0.72; ICC 1.04 ± 0.71). There was a significant difference in cross clamp time (BCP 61.10 ± 23.07; ICC 41.30 ± 13.10). No significant differences in ECC-time (BCP 95.85 ± 27.04; ICC 113.80 ± 34.47) and number of distal anastomoses (BCP 2.70 ± 0.73; ICC 2.90 ± 0.72) were found. Values of cTnI 1-day postoperative (BCP 1.50 ± 0.76; ICC 4.50 ± 3.90), maximum cTnI (BCP 2.85 ± 1.73; ICC 6.40 ± 4.30) and maximum CK-MB (BCP 21.10 ± 22.30; ICC 31.35 ± 24.39) differed significantly. No significant differences in postoperative parameters were found: length of hospital stay (BCP 7.95 ± 1.40; ICC 8.25 ± 1.71), atrial fibrillation (BCP 0.20 ± 0.41; ICC 0.45 ± 0.51), major complications (BCP 0.35 ± 0.49; ICC 0.30 ± 0.47). There was no in-hospital mortality. Conclusion: Primary outcomes defined by the cardiac enzymes (cTnI, CK-MB) favour the use of tepid antegrade intermittent blood cardioplegia in low-risk patients undergoing elective CABG-operations. Regarding secondary outcomes, ICC showed shorter cross clamp times.
R. Rezaei Kalantary, A. Badkoubi
Iranian Journal of Environmental Health Science & Engineering , 2006,
Abstract: Polycyclic Aromatic Hydrocarbons (PAHs) which are introduced into environment are potentially carcinogenic, mutagenic and toxic contaminants. The effect of extractable humic substances (EHS) on bacterial density in bioremediation of anthracene in liquid systems was investigated. The ratio of EHS to anthracene were in two concentrations of 0.35 and 1.05 g dry EHS (with 30% organic matter) per one mg anthracene. In the tests with EHS, an increase in bacterial density even by 8 fold of magnitude was seen in 12-15 days. Then a fast decrease was occurred and prolonged till the end of the test time for the tests that had EHS without anthracene. In the tests which anthracene was the only substrate increasing in bacterial population was not seen. The results showed that up to 21 days the system was free from degradation. So the first increasing in bacterial population showed that EHS might be used as a readily substrate for PAH degraders. The presence of EHS (fulvic and humic acid) can stimulate bacterial community and activity that caused enhancement in anthracene bioremediation.
Impaired renal tubular function in pediatric patients with β-thalassemia major
Mojgan Mazaheri
Koomesh , 2009,
Abstract: Introduction: β-thalassemia major due to ineffective erythrocyte life span leads to severe anemiarequiring regular transfusion, which it can lead to major organs damage. Renal damage can beattributed to chronic anemia, iron over load and or defferoxamin toxicity. The object of this study wasto analyze renal tubular and glomerular function in pediatric patients with beta-thalassemia major.Materials and Methods: 39 patients with β -thalassemia major whose mean ages were 11.8 yr and22 sex and age matched healthy children as control group were studied. Blood rine samplesand uwereobtained for measuring biochemical markers. Urinary N-Acetyl-β.D.glucosaminidase (NAG) andurine NAG to creatine ratio (U Cr /NAGratio) were measuredResults: No significant differences were found between serum BUN, creatinine, and also creatinineclearance between both groups. Also there were no significant differences in urine osmolality betweenpatients and controls. Urine NAG was significantly higher in thalassemic patients than control group(p< 0.000). There was positive relation between urinary NAG and duration of illness(r = 0314,p<0.01). There was no significant relationship between urinary NAG and serum ferritin. Finally, nosignificant difference was found in GFR of both groups.Conclusion: Our study showed renal tubular function is impaired in in patients with β-thalassemiamajor as indicated with increased urinary NAG. Further, we have found a positive relationshipbetween urinary NAG and duration of disease. Thus, in spite of normal GFR and other biochemicalmarker such as BUN and creatinine, increased urinary NAG may be as an early marker of renaldisease in patients with β-thalassemia majo.
The Effect of Sound on the Immune System
Mojgan Shaygan
Audiology , 1999,
Abstract: The immune system protects body against disturbing factors such as pathogens and tumor cells by means of its special cell and biological structures. It has been divided based on its components and soluble factors into two groups of specific and non-specific immune system. Since sound is considered as a stressor it can affect dramatically on the immune system. Stress caused by noise can reduce the immune system response to chemical stimulators have decreased. In Stead, deep relaxation has consistently been proven to be very effective at increasing T-Cells and strengthening the immune system. In the current article, we want to have a look on the adverse effects of sound on the immune system.
Petrology, Geochemistry and Mineral Chemistry of Extrusive Alkalic Rocks of the Southern Caspian Sea Ophiolite, Northern Alborz, Iran: Evidence of Alkaline Magmatism in Southern Eurasia
Mojgan Salavati
Journal of Applied Sciences , 2008,
Abstract: The alkalic basalts of the SCO ophiolite are made up of olivine, clinopyroxene (salite), plagioclase and Fe-Ti oxides. They show a narrow range of SiO2 (45.2-48.85 wt. %) and MgO (3.59-4.85 wt. %) and are relatively enriched in TiO2 (3.13-3.82 wt. %). The rocks are enriched in incompatible trace elements such as Zr, Nb and Y. There is no evidence of significant crustal contamination; this may be related to the rapid ascent of the parental magma. Normalized trace element patterns and diagnostic elemental ratio are very similar to those of modern Ocean-Island Basalts (OIB) a feature which suggests that the mantle source region was the asthenosphere. Comparison with the different types of OIB indicates that the basalts may be derived from a high U/Pb (HIMU) source with slightly elevated K and Ba contents. The overall chemical characteristics suggest that the alkali basalts of the SCO were derived from a fertile mantle source and suggest that the magma was produced by a small-degree partial melting of a garnet lherzolite source. As inferred from geochemical and tectonic data, alkali rocks of the SCO were generated from a plume in a local extension regime.
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