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匹配条件: “Mehran Azami” ,找到相关结果约753条。
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Intestinal parasitic infections in renal transplant recipients
Azami, Mehdi;Sharifi, Mehran;Hejazi, Sayed Hossein;Tazhibi, Mehdi;
Brazilian Journal of Infectious Diseases , 2010, DOI: 10.1590/S1413-86702010000100004
Abstract: the impact of intestinal parasitic infection in renal transplant recipients requires careful consideration in the developing world. however, there have been very few studies addressing this issue in iran. this study was conducted to determine the prevalence of intestinal parasitic infections in renal transplant recipients in iran. stool specimens from renal transplant recipients and control groups were obtained between june 2006 and january 2007. the samples screened for intestinal parasitic infections using direct smear, formalin-ether sedimentation, sheather's flotation and modified ziehl-neelsen staining methods. out of 150 renal transplant recipients, 33.3% (50), and out of 225 control group, 20% (45) were infected with one or more type of intestinal parasites. the parasites detected among patients included entamoeba coli (10.6%), endolimax nana (8.7%), giardia lamblia (7.4%), blastocystis spp. (4.7%), iodamoeba butschlii (0.7%), chilomastix mesnili (0.7%) and ascaris lumbricoides (0.7%). multiple infections were more common among renal transplant recipients group (p < 0.05). this study highlights the importance of testing for intestinal parasites among iranian renal transplant recipients. routine examinations of stool samples for parasites would significantly benefit the renal transplant recipients by contributing to reduce severe infections.
Validity and Cross-Cultural Adaptation of the Persian Version of the Oxford Elbow Score
Mohammad H. Ebrahimzadeh,Amir Reza Kachooei,Ehsan Vahedi,Ali Moradi,Zeinab Mashayekhi,Mohammad Hallaj-Moghaddam,Mehran Azami,Ali Birjandinejad
International Journal of Rheumatology , 2014, DOI: 10.1155/2014/381237
Abstract: Oxford Elbow Score (OES) is a patient-reported questionnaire used to assess outcomes after elbow surgery. The aim of this study was to validate and adapt the OES into Persian language. After forward-backward translation of the OES into Persian, a total number of 92 patients after elbow surgeries completed the Persian OES along with the Persian DASH and SF-36. To assess test-retest reliability, 31 randomly selected patients (34%) completed the Persian OES again after three days while abstaining from all forms of therapeutic regimens. Reliability of the Persian OES was assessed by measuring intraclass correlation coefficient (ICC) for test-retest reliability and Cronbach’s alpha for internal consistency. Spearman’s correlation coefficient was used to test the construct validity. Cronbach’s alpha coefficient was 0.92 showing excellent reliability. Cronbach’s alpha for function, pain, and social-psychological subscales was 0.95, 0.86, and 0.85, respectively. Intraclass correlation coefficient (ICC) was 0.85 for the overall questionnaire and 0.90, 0.76, and 0.75 for function, pain, and social-psychological subscales, respectively. Construct validity was confirmed as the Spearman correlation between OES and DASH was 0.80. Persian OES is a valid and reliable patient-reported outcome measure to assess postsurgical elbow status in Persian speaking population. 1. Introduction Clinical outcome measures to evaluate health related quality and function are important in the field of orthopedics [1, 2]. Scoring systems are of two parts that include in one part clinical evaluation and judgment by a skilled observer. The second part is the opinion of patients regarding their health status and this may differ from their physician. Whereas patient satisfaction and well-being are the aim of all therapeutic protocols, relying upon only clinical measures is not enough and so considering the opinion of patients concerning their health status is necessary to standardize medical or surgical decisions [3]. Moreover, another point to consider is that some health status items such as pain or psychosocial characteristics are not completely evaluable by clinical observation. Hence, to compare the efficacy of different treatment protocols with each other, we should put emphasis on joint clinician and patient reported measures, which is why patient reported outcome measures (PROMs) have been introduced [4]. According to a meta-analysis performed by Longo et al., eighteen questionnaires are available to assess the elbow joint and these can be classified into two models [5]. One model is
Physiographic-Tectonic Zoning of Iran’s Sedimentary Basins  [PDF]
Mehran Arian
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.33020
Abstract:

Base on geological history evaluation using regional stratigraphy, sedimentary environments, magmatic activities, metamorphism and structural trend in Iran, physiographic-tectonic zoning map of Iran’s sedimentary basins has prepared. This map has prepared to point out the basement tectonics role in Iran. It contains twenty-four different provinces. Iran has composed from different plates: Arabian plate in south and west, Cimmerian manipulated in north and east, Eurasian plate in northeast margin. Cimmerian manipulated at least can be divided to the smaller part, East-Central Iran and North-Central Iran microcontinents. There are evidences for thick-skinned tectonics in the border zones of these plates and microcontinents, especially in Sanandaj-Sirjan overthrust belts that it formed by crustal stacking wedges. Also, Neoproterozoic-Phanerozoic Tectonic column in the Arabian, Cimmerian and Eurasian plates under Iran Country area have introduced.

Comparing the Recall to Pleasant and Unpleasant Face Pictures in Depressed and Manic Individuals  [PDF]
Mehran Sardaripour
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.51004
Abstract:

The main purpose of the present study is to compare the perception of recalling pleasant and unpleasant face pictures in the case of depressed and manic people. Methodology: The present study is an analysis based on a comparative type research; the statistical sample is made up of depressed and manic people (males) referred to LAVASANI Hospital in Tehran City using Beck’s depression questionnaire and a diagnostic interview based on (SCID) DSMIV 30 depressed individuals who were selected after the process of screening. Ranging from moderate to high depression levels (with a cut-off point of 21 and higher), samples of 30 people with manic and 30 depressed people were compared with 30 healthy individuals. It should be mentioned that three groups were convergent in terms of age, gender, marital status and educational level. Then, a test involving computer-based cognitive-neural recall (emotional facial Pictures) was carried out on the related subjects. Findings: A t test of both independent groups was used to evaluate the convergence of the groups and multi variable bilateral variance analysis (MANOVA) was used to assess the pleasant and unpleasant perception of images among three groups. The results of the study showed that there is a difference among three groups in terms of recalling pleasant and unpleasant faces so that the depressed group shows a higher level of recall in terms of unpleasant images than the other two groups, but it indicates little recall of pleasant images in comparison to the other two groups (p < 0/05). Conclusion: The findings of the present study include some explicit outcomes in relation to the application of therapeutic approaches and concentrated educational methods on the amendment of emotional bias in depressed and manic people.

An Improved Signal Segmentation Using Moving Average and Savitzky-Golay Filter  [PDF]
Hamed Azami, Karim Mohammadi, Behzad Bozorgtabar
Journal of Signal and Information Processing (JSIP) , 2012, DOI: 10.4236/jsip.2012.31006
Abstract: Analysis of long-term EEG signals needs that it be segmented into pseudo stationary epochs. That work is done by regarding to statistical characteristics of a signal such as amplitude and frequency. Time series measured in real world is frequently non-stationary and to extract important information from the measured time series it is significant to utilize a filter or smoother as a pre-processing step. In the proposed approach, the signal is initially filtered by Moving Average (MA) or Savitzky-Golay filter to attenuate its short-term variations. Then, changes of the amplitude or frequency of the signal is calculated by Modified Varri method which is an acceptable algorithm for segmenting a signal. By using synthetic and real EEG data, the proposed methods are compared with original approach (simple Modified Varri). The simulation results indicate the absolute advantage of the proposed methods.
Illumination Invariant Face Recognition Using Fuzzy LDA and FFNN  [PDF]
Behzad Bozorgtabar, Hamed Azami, Farzad Noorian
Journal of Signal and Information Processing (JSIP) , 2012, DOI: 10.4236/jsip.2012.31007
Abstract: The most significant practical challenge for face recognition is perhaps variability in lighting intensity. In this paper, we developed a face recognition which is insensitive to large variation in illumination. Normalization step including two steps, first we used Histogram truncation as a pre-processing step and then we implemented Homomorphic filter. The main idea is that, achieving illumination invariance causes to simplify feature extraction module and increases recognition rate. Then we utilized Fuzzy Linear Discriminant Analysis (FLDA) in feature extraction stage which showed a good discriminating ability compared to other methods while classification is performed using Feedforward Neural Network (FFNN). The experiments were performed on the ORL (Olivetti Research Laboratory) face image database and the results show the present method outweighs other techniques applied on the same database and reported in literature.
State Estimation over Customized Wireless Network  [PDF]
Sayed Vahid Naghavi, Ali Azami, Freidoon Shabaninia
Wireless Engineering and Technology (WET) , 2012, DOI: 10.4236/wet.2012.34032
Abstract: In this paper the state estimation techniques are investigated over customized wireless network for a continuous-time plant. It is assumed that the plant is connected to the controller over the proposed network. The feedback control over wireless networks includes limited bandwidth, time-varying and unknown delays with a high probability of data loss. Reasonably, some of these issues are deduced from the wireless networks structures. In order to deal with these problems the customized wireless network architecture is proposed for this Wireless Networked Control System (WNCS) and the problem of transmission delays and packet losses which induced by this scheme is studied. The time-varying delays of the TCP based shared network is estimated by fuzzy state estimation technique. Thereafter the kalman filtering is applied to address the problem of optimal filtering for this continuous-time plant with time-varying delays. The re-organized innovation analysis approach is applied to tackle the network induced time-varying delays. The simulation results show the applicability of the proposed approach.
The Biggest Salt-Tongue Canopy of Central Iran  [PDF]
Mehran Arian, Hamideh Noroozpour
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.52005
Abstract: One of the most interesting salt structures is salt-tongue canopy. The Central Iran basin has a few salt provinces and in this paper, morphotectonic concept of the salt-tongue canopy on the west of Garmsar city has been investigated. In this study, field data coupling with the salt tectonic-related factors to provide a position for salt rocks in the west Garmsar. Firstly, various geological factors such as faults, folds and roads were extracted and compiled. This is because the factors mentioned above play important role in the instability of the region. The results of this study showed that the salt extrusion from the Lower Red formation is severe. Further, it is evident that the shortening of main structures has had a great impact on it whilst the salt movements have occurred within Garmsar Syncline. Finally, the paper concluded that the salt-tongue canopy in the region has increased the rates of salt extrusion.
Lineament Tectonics and Mineralizatin in Tarom Area, North Iran  [PDF]
Mehran Arian, Reza Nouri
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.53011
Abstract: The study area that is part of Tarom volcano-plutonic zone which host many hydrothermal base metal deposits located in Zanjan, NW Iran. Understanding the tectonic events that can cause mineralization and hydrothermal alteration are significant factor in assessing the exploration potential of different structures. In this research, hydrothermal alteration such as Iron oxide, argillic, phyllic, and propylitic zones were determined by Spectral Angle Method (SAM) and also lineaments identified by high pass filters and hill-shade DEM techniques on Advanced Space borne Thermal Emission and Reflection Radiometer (ASTER) data. Field studies revealed most alteration and mineralization occurred in NE-SW fractures and control mineralization.
Tectonic Geomorphology of Iran’s Salt Structures  [PDF]
Mehran Arian, Hamideh Noroozpour
Open Journal of Geology (OJG) , 2015, DOI: 10.4236/ojg.2015.52006
Abstract: Iran has a various salt structures that their tectonic geomorphology is subject of this paper. Geologic situation of salt structures in Iran have determinate. According to age and geological setting of salt deposits that revealed by tectonic geomorphology methods, salt structure provinces of the Central and Southern Iran have been distinguished. Also, critical concepts of salt diapirism in the Southern Iran and Central Iran salt basins have explained. Therefore, Central Iran’s salt diapirs have triggered by tectonic forces, but salt diapirism in the Southern Iran has triggered by halokinesis, then it has effected by tectonic forces, especially in Zagros fold and thrust belt.
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