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T-Helper Cytokine Patterns and Related Antibodies in Patients with Gestational Diabetes Mellitus
Z Etaati,R Moazzami Godarzi,F Kalhori,SA Sobhani
Tehran University Medical Journal , 2012,
Abstract: Background: Diabetes mellitus (DM) is a group of metabolic disorders such as DM I, DM II, secondary causes of DM and gestational diabetes mellitus characterized by hyperglycemic phonotype. The etiology of gestational diabetes mellitus is unknown. Recent studies address the chronic activity of immune system against infections (not autoimmunity) as an important cause of gestational diabetes mellitus. This study aimed to compare T-helper cells 1 and 2 cytokines and associated antibodies in patients with gestational diabetes mellitus and normal pregnant women. Methods: This cross-sectional study was performed on 45 female patients with GDM and 45 healthy pregnant women in Bandar Abbas, Iran, from 2008- 2009. The exclusion criteria were presence of any infectious diseases or autoimmune disorders such as SLE or RA. Present and past medical histories were taken from the participants thorough physical examination. Blood samples (10 mL) were drawn and sent to laboratory for measuring serum IgE, IgG1, IgG2, IgG3, IgG4, interleukin-10 (IL-10), interleukin-12 (IL-12), transforming growth factor-beta (TGF 1), and interferon-gamma (IFN ) measurements. T-test and Kolmogorov-Smirnov test were used for data analysis. Results: The mean age of the patients with GDM and healthy pregnant women was 32.5 and 27.9 yrs, respectively. T-helper 1 and 2 associated antibodies and cytokines had no significant differences between the case and control groups. Conclusion: The changes in T-helper 1 and 2 associated antibodies and cytokines are not associated with gestational diabetes mellitus and could not be considered as a predictor for gestational diabetes mellitus.
Effect of the Bus-Section and Generator-Breaker on Reliability Indices of Busbar Schemes in Power Plant
R. Hooshmand,M. Ataei,M. Moazzami
International Journal of Electrical and Power Engineering , 2012,
Abstract: One of the main subjects in power systems is increasing the power-plant reliability in emergency conditions. In power systems, the power-plant outage is considered as a critical position, which leads to economic damages and instability problems. Surely, the type of the busbar layouts in power stations affects the power-plant availability. In this study, the effect of the bus-section and generator-breaker in one and half-circuit breaker system and two-circuit breaker system and the effect of the above points over reliability parameters are investigated. For simulation, the cutest and path algorithm have been applied. Finally economical evaluations of the simulation results show the effectiveness of the bus-section and generator-breaker in busbar layout of power-plant substations.
New Bounds on Tenacity of Graphs with Small Genus  [PDF]
Davoud Jelodar, Dara Moazzami
Open Journal of Discrete Mathematics (OJDM) , 2014, DOI: 10.4236/ojdm.2014.42005
Abstract:

A new lower bound on the tenacity  of \"\" a graph G in terms of its connectivity \"\" and genus \"\" is obtained. The lower bound and interrelationship involving tenacity and other well-known graphical parameters are considered, and another formulation introduced from further bounds are derived.

Bai-Perron Estimates of OECD Natural Rates of Unemployment 1955-2011  [PDF]
Michael Shannon, Bakhtiar Moazzami
iBusiness (IB) , 2014, DOI: 10.4236/ib.2014.63015
Abstract: Bai and Perron’s method for detecting multiple, unknown structural breaks was used to estimate natural rates of unemployment for 19 OECD countries from 1955-2011. Natural rates were lowest in the early period, then, rose in the mid-1970s and early-1980s in most countries. Several countries saw declines in the late-1990s or early-2000s.
Isolation of Acremonium species producing cephalosporine C (CPC) from forest soil in Gilan province, Iran
MR Sarookhani, N Moazzami
African Journal of Biotechnology , 2007,
Abstract: Cephalosporin C (CPC) is a major precursor of cephalosporin antibiotics which is produced by a group of deuteromycets. After biosynthesis in optimized fermentation media, CPC is recovered and converted to a variety of potent cephalosporin antibiotic drugs. This study was performed to determine the mycoflora producing CPC in various parts of Iran soil. Soil samples were collected and cultured on selective media and Acremonium sp. were isolated. The presence of CPC antibiotic in the fermentation broths of these species was determined by a combination of biological, HPLC and mass spectrometry methods. From 350 fungi isolated, 21 (6%) were Acremonium spp, which one strain was able to produce CPC. This species was recognized as Acremonium persicinum according to its macroscopic and microscopic criteria. It is possible to apply different characteristics of the isolated species in strain optimization processes such as protoplast fusion.
Effect of Light Conducting Cylindrical Inserts on Gingival Microleakage
SM. Moazzami,H. Alaghehmand
Journal of Dentistry of Tehran University of Medical Sciences , 2007,
Abstract: Objective: Microleakage in the gingival floor of class II composite restorations can compromise the marginal adaptation of the filling material to the cavity edges. The aim of this study was to evaluate the effect of light conducting cylindrical inserts in decreasing the microleakage of the gingival floor in cavities 1mm below the CEJ.Materials and Methods: Eighty maxillary first molars were randomly divided into eight groups according to use of glass inserts, type of resin (Coltene unfilled resin versus Scotchbond multi purpose) and filling technique (one-unit versus incremental). Proximal class II cavities were prepared in all samples with the gingival floor one millimeter below the CEJ. Etched and silan-treated glass inserts were made from 2mm cylindrical bioglass material and cavities were restored according to research protocol. The samples were subjected to 2500 thermal cycles (5-55oC), immersed in 0.5% basic fuchsin solution, embedded in epoxy resin and cut centrally and laterally (buccally or lingually) in a mesiodistal direction. Microleakage was scored and collected data were statistically analyzed using Kruskal-Wallis and Mann-Whitney tests.Results: Minimal dye penetration was observed in the group that employed the incre-mental technique along with Scotchbond, with or without glass inserts. A significant difference was observed between the eight groups. In addition the use of the incremental technique and glass inserts had a significant effect on the microleakage of lateral and central sections, respectively. Application of dentin bonding agent signifi-cantly affected both sections.Conclusion: Glass inserts were effective in decreasing cervical microleakage of class II cavities restored with composite resin.
Enhancement of dispersion and bonding of graphene-polymer through wet transfer of functionalized graphene oxide
F. Sharif,M. Moazzami Gudarzi
eXPRESS Polymer Letters , 2012, DOI: 10.3144/expresspolymlett.2012.107
Abstract: Dispersion of nanomaterials in polymeric matrices plays an important role in determining the final properties of the composites. Dispersion in nano scale, and especially in single layers, provides best opportunity for bonding. In this study, we propose that by proper functionalization and mixing strategy of graphene its dispersion, and bonding to the polymeric matrix can be improved. We then apply this strategy to graphene-epoxy system by amino functionalization of graphene oxide (GO). The process included two phase extraction, and resulted in better dispersion and higher loading of graphene in epoxy matrix. Rheological evaluation of different graphene-epoxy dispersions showed a rheological percolation threshold of 0.2 vol% which is an indication of highly dispersed nanosheets. Observation of the samples by optical microscopy, scanning electron microscopy (SEM), and atomic force microscopy (AFM), showed dispersion homogeneity of the sheets at micro and nano scales. Study of graphene-epoxy composites showed good bonding between graphene and epoxy. Mechanical properties of the samples were consistent with theoretical predictions for ideal composites indicating molecular level dispersion and good bonding between nanosheets and epoxy matrix.
A Combination of Atrioventricular Block and Sinoatrial Block in a Horse
A Rezakhani, M Godarzi, I Tabatabei Naeini
Acta Veterinaria Scandinavica , 2005, DOI: 10.1186/1751-0147-46-173
Abstract: The first two complexes of the ECG appeared to be conducted normally through the heart following initiation of the sinoatrial node (Fig. 1); however, the P-R interval was variable and the third P wave was blocked at the A-V node. The mean P-P interval was about 1.80 second indicating a sinus rate of 33 beats per minute. Following the first blocked P-wave, there was a long pause, which was slightly more than twice the previous P-P interval. There was no electrical activity during this pause indicating a concomitant sinoatrial block (SAB). The underlying rhythm was sinus arrhythmia as the P-P or R-R intervals were variable. There was also a single atrioventricular block (AVB) in the second trace. No single SAB without accompanying AVB was observed on the ECG.The prevalence of cardiac arrhythmias among domestic animals is more common in the horse [6] than in other species and the majority of these dysrhythmias are not clinically significant. Sinus arrhythmia, sinoartrial block, wandering pacemaker, first and second degree atrioventricular blocks are considered to be vagally mediated conduction disturbances and waxing and waning of the vagal nerve is believed to be the cause of these cardiac irregularities [8]. Of these cardiac dysrhythmias, second degree AVB is more common [2,1]. There are three types of AVB; that is, first degree AVB in which all impulses originating from the SA node conduct to the ventricle with longer than normal P-R interval (P-R > 0.50 sec.). Although this can be diagnosed on auscultation, ECG is needed for confirmation. In second degree AVB, some of the P waves are not followed by the QRS complexes, therefore, there are more P waves than QRS complexes and during the missed beat the fourth heart sound can be heard. There are two types of second degree AVB. In type I, the P-R interval lengthens gradually untill a P-wave is blocked but in type II the P-R intervals remain fixed. In third degree AVB, the electrical relationship of the atria and the ve
An analysis Seydan ecotourism with emphasis on sustainable development
Jamal Mohammadi,Dariush Ahmadi,Majid godarzi
Management Science Letters , 2012,
Abstract: Ecotourism is one of the most popular methods in green economy and it can generate wealth and develop the economy of developing countries. Ecotourism supports environmental conservation, creates economic opportunities by emphasizing on benefits of the local community, and suggests that the involvement of the residents plays important role for the efficient management of tourism. In this paper, we present an empirical study to measure the impact of ecotourism on developing the economy of a historical place located in south west of Iran called Seydan. The proposed study distributes some questionnaires among 400 randomly selected people who participate in our survey. The results confirm that ecotourism can contribute the economy of the region, significantly. We also perform a comprehensive strategic planning to find out more about strength, weakness, treats and opportunities surrounding the region.
The recognizing of fli C gene in Pseudomonas aeruginosa isolated from clinical sample with PCR
Imani fooladi ,AA,Sattari ,M,Godarzi ,GH
Medical Laboratory Journal , 2009, DOI: http://www.goums.ac.ir/mljgoums/index.php?&slct_pg_id=10&sid=1&slc_lang=en
Abstract: Background and objectives: Pseudomonas aeruginosa as anopportunistic pathogen can establish lethal infections inimmunocompromised patients or those exposed to predisposing factors. Thisbacterium contains a single polar flagellum causing motility, chemotaxis andcolonization in acute phase of infection. The flagella filament is made up of astructural protein called flagellin. This study was aimed at determining Thefrequency of fliC gene in Clinical Samples.Material and Methods: In this study, a pair of specific primer for types offlagellin (a, b type) was designed and by using PCR method its structuralgene (fliC) was recognized and amplified in clinical strains.Results: This original primer has appropriate efficiency in diagnostic ofpseudomonas aeroginosa flagellum. Our study shows that 85% of theClinical Samples have a fliC gene.Conclusion: This method can be applied to recognizing of the motilestrains, and their antigenic typing, and complete amplification of fliCsequence in order to cloning and expression of recombinant flagellin.Key words: Pseudomonas aeruginosa, flagellin, fliC, PCR
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