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Search Results: 1 - 10 of 325307 matches for " S. Zolfaghari "
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ThestudyofNeo-TethysPaleogeographyinMarri-Asbkeshanarea,north-northwestDoruneh–Kashmarsubzone(Khartouran)
R. KOHANSAL,S. ZOLFAGHARI
地球学报 , 2009, DOI: 10.3975/cagsb.2009.s1.17
Abstract: ThestudyareaisasmallpartoftheSabzevarstructuralzone,andisconfinedbetweenSemnanandKhorasanprovinces.TheoldestsedimentaryrocksofthisregionareMiddleJurassicinagewithhorizonsofcalc-alkalinerhyolitic-rhyodaciticlavasinbetween.FirstalkalinebasalticlavasaccompaniedbydiabasicdikesinthisregionappearedalongwithEarlyCretaceouslime-stone.LateCretaceousrocksarecomposedofvolu-minouscalc-alkalinerhyodacitic-rhyoliticandtrachy-andesiticlavasanddikes,andbasalticdikes.Withabundancepinkish-creamplagiclimestonethishasbeenoverlainbyPaleocenerocks.
Stability of a mixed type quadratic, cubic and quartic functional equation
M. Eshaghi Gordji,S. Kaboli,S. Zolfaghari
Mathematics , 2008,
Abstract: In this paper, we obtain the general solution and the generalized Hyers-Ulam Rassias stability of the functional equation $$3(f(x+2y)+f(x-2y))=12(f(x+y)+f(x-y))+4f(3y)-18f(2y)+36f(y)-18f(x).$$
Stability of a Functional Equation Deriving from Cubic and Quartic Functions
M. Eshaghi Gordji,A. Ebadian,S. Zolfaghari
Abstract and Applied Analysis , 2008, DOI: 10.1155/2008/801904
Abstract: We obtain the general solution and the generalized Ulam-Hyers stability of the cubic and quartic functional equation4((3
The tracheal tube: gateway to ventilator-associated pneumonia
Parjam S Zolfaghari, Duncan LA Wyncoll
Critical Care , 2011, DOI: 10.1186/cc10352
Abstract: Ventilator-associated pneumonia (VAP) is defined as pneumonia occurring in a mechanically ventilated patient after 48 hours of endotracheal intubation [1]. Despite significant advances in managing intubated patients, VAP remains a common and occasionally fatal complication in the ICU [2]. A systematic review of published data since 1990 showed the incidence of VAP to be 10 to 20%, with a possible two-fold increase in mortality attributable to VAP [3]. The ICU length of stay was also significantly increased by a mean of 6.1 days with an attributable cost of $10,019 per case [3]. A recent Canadian study estimated an additional 4.3 ICU days attributable to VAP, occupying 2% of all ICU days and an estimated national cost of CAN$43 million per year [4]. Similar findings were reported by a North American study with increased unadjusted ICU length of stay and mortality in patients with VAP (50% mortality in VAP patients versus 34% in non-VAP) with an estimated $11,897 attributable cost [5]. Furthermore, the burden of VAP takes up a significant portion of antibiotic dispensing in the ICU [6] and may well be a contributor to the development of multi-resistant bacteria [7].Importantly, many units are recently reporting a reduction in VAP incidence following implementation of various prevention measures, as well as programs that increase compliance with such care bundles [8-10].The pathogenesis of VAP mainly stems from the introduction of microbial pathogens by microaspiration past the tracheal tube cuff and into the lower respiratory tract (Figure 1). Subsequent colonization and overwhelming of the host mechanical, humoral and cellular defence mechanisms lead to the development of VAP [11]. The tracheal tube forms the essential first part of this mechanistic pathway by breeching the anatomic barriers formed by the glottis and larynx. Suppression of the cough reflex as a result of sedation further hampers natural reflexes [2]. The oropharynx, nasal sinuses and the stomach have
Stability of a functional equation deriving from cubic and quartic functions
M. Eshaghi Gordji,A. Ebadian,S. Zolfaghari
Mathematics , 2008,
Abstract: In this paper, we obtain the general solution and the generalized Ulam-Hyers stability of the cubic and quartic functional equation &4(f(3x+y)+f(3x-y))=-12(f(x+y)+f(x-y)) &+12(f(2x+y)+f(2x-y))-8f(y)-192f(x)+f(2y)+30f(2x).
Solution and Stability of a Mixed Type Additive, Quadratic, and Cubic Functional Equation
Eshaghi Gordji M,Kaboli Gharetapeh S,Rassias JM,Zolfaghari S
Advances in Difference Equations , 2009,
Abstract: We obtain the general solution and the generalized Hyers-Ulam-Rassias stability of the mixed type additive, quadratic, and cubic functional equation .
Antihyperlipidemic effect of peucedanum pastinacifolium extract in streptozotocin-induced diabetic rats
Movahedian, Ahmad;Zolfaghari, Behzad;Sajjadi, S. Ebrahim;Moknatjou, Reza;
Clinics , 2010, DOI: 10.1590/S1807-59322010000600011
Abstract: introduction: dyslipidemia is one of the most common complications of diabetes mellitus, significantly contributing to cardiovascular morbidity and mortality in diabetic patients. peucedanum pastinacifolium boiss. & hausskn. is commonly used as an antihyperlipidemic vegetable in iranian folk medicine. material and methods: in this study, we examined a hydroalcoholic extract of the aerial parts of peucedanum pastinacifolium to determine its lipid-lowering activity in normal and streptozotocin (stz)-induced diabetic rats. experimental diabetes mellitus was induced by a single intraperitoneal administration of streptozotocin. normal and streptozotocin-induced diabetic rats were separated into four groups. the groups were fed with 0, 125, 250 or 500 mg/kg body weight of peucedanum pastinacifolium hydroalcoholic extract (ppe) in aqueous solution for 30 days. results: the results show that there were significant (p < 0.05) increases in total serum cholesterol, triglyceride and low-density lipoprotein cholesterol (ldl-c) and a decrease in high-density lipoprotein cholesterol (hdl-c) in streptozotocin-induced diabetic rats. treatment of diabetic rats with ppe over a period of a month returned these levels close to control levels. conclusion: these results suggest that ppe has hypolipidemic effects in streptozotocin-induced diabetic rats.
Mercury accumulation in human hair and nails: amalgam fillings as an exposure factor
Zolfaghari Gh,Esmaeili sari A,Seyed M Ghasempouri,Faghihzadeh S
Tehran University Medical Journal , 2007,
Abstract: Background: Dental amalgam, a mixture of approximately 50% mercury with silver, tin, zinc and copper in varying ratios, is a major source of mercury pollution in the general population not occupationally exposed. The toxicity of mercury is enhanced because it is so readily absorbed, with around 90-100% of mercury vapor being absorbed through the oral mucosa. The aim of the current study is to examine the mercury levels in hair and nails in subjects with amalgam fillings.Methods: For a sample of forty university students reporting infrequent fish consump-tion, with their only known exposure to mercury from amalgam fillings, mercury levels were measured in hair and nail samples using the LECO AMA 254 Advanced Mercury Analyzer (USA), according to the ASTM standard No. D-6722 test method.Results: Mercury concentration in hair ranged from 0.09 to 3.11 mg/kg, and in nail from zero to 1.35 mg/kg. We found that subjects with five or more amalgam fillings had significantly higher levels in their hair than subjects with zero to 5 amalgam fillings (CI 95% P=0.003). However, the number of amalgam fillings had no effect on the mercury concentration in nails in these two groups (P=0.26). There was no significant difference between the levels of mercury of males and that of females tested (P=0.26 for nail and P=0.15 for hair).Conclusion: The mercury amount in hair was 1.5 times as much as that of the nail samples, may be due to the differences in the chemical compounds, particularly those with sulfur, or the deposition of those compounds that would be affected by blood circulation during formation of hair and nails. Although the amounts of mercury found in this study were below the WHO maximum acceptable level of 6 mg/kg for mercury in human hair, the levels were sufficient to warrant the use of other dental materials such as composites in order to decrease the overall rate of exposure to mercury.
Industrial Noise
Mehran zolfaghari
Audiology , 1996,
Abstract: Various risk factors in industrial environments can affect hearing status and healthy in today’s modern society. Noise control and hearing conservation program is very crucial in preventing workers exposed to high levels of noise in the work places. In the current article we are going to discuss issues such as industrial noise control, noise characteristics and standards and techniques for noise control. Then the methods for individual hearing conservation and medical care will be described in details.
Solution and Stability of a Mixed Type Cubic and Quartic Functional Equation in Quasi-Banach Spaces
M. Eshaghi Gordji,S. Zolfaghari,J. M. Rassias,M. B. Savadkouhi
Abstract and Applied Analysis , 2009, DOI: 10.1155/2009/417473
Abstract: We obtain the general solution and the generalized Ulam-Hyers stability of the mixed type cubic and quartic functional equation (
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