Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 83 )

2019 ( 461 )

2018 ( 519 )

2017 ( 536 )

Custom range...

Search Results: 1 - 10 of 325481 matches for " Nejati S "
All listed articles are free for downloading (OA Articles)
Page 1 /325481
Display every page Item
Accuracy of digital panoramic regarding interproximal caries detection
Goodarzi Pour D,Nejati S,Fotouhi A
Journal of Dental Medicine , 2011,
Abstract: "nBackground and Aims: Conventional radiological equipments in our country are going to be converted to digital system using computed radiology (CR) technology. If we know the accuracy of digital panoramic radiography for detection of small defects in tooth, it will be useful in cases with difficulty for taking the intraoral radiographs. The aim of this study was to evaluate sensitivity and specificity of digital panoramic radiography for detection of proximal caries compared with the bitewing radiography."nMaterials and Methods: One-hundred patients who had been ordered for taking both bitewing and panoramic radiography were included in this study. Panoramic and then bitewing radiographs were observed by a maxillofacial radiologist and interproximal caries were recorded. Sensitivity and specificity of digital panoramic radiography (CI=95%) was calculated compared with the bitewing radiography as a gold standard."nResults: This study showed that the values for sensitivity and specificity were 62.7% (CI 95%=57.7%-67.5%) and 91.0% (CI 95%=89.2%-92.5%), respectively."nConclusion: Sensitivity of digital panoramic is less than bitewing radiography even with processing before printing. Therefore, bitewing radiography is superior for detection of inter proximal caries.
Removal of Phenols from Wastewater with Encapsulated Horseradish Peroxidase in Calcium Alginate
I.Alemzadeh,S. Nejati,M. Vossoughi
Engineering Letters , 2009,
Higher Order and boundary Scaling Fields in the Abelian Sandpile Model
S. Moghimi-Araghi,A. Nejati
Physics , 2006, DOI: 10.1088/1751-8113/40/37/006
Abstract: The Abelian Sandpile Model (ASM) is a paradigm of self-organized criticality (SOC) which is related to $c=-2$ conformal field theory. The conformal fields corresponding to some height clusters have been suggested before. Here we derive the first corrections to such fields, in a field theoretical approach, when the lattice parameter is non-vanishing and consider them in the presence of a boundary.
Migrated Exploding Reflectors in Evaluation of Finite Difference Solution for Inhomogeneous Seismic Models  [PDF]
Maryam Nejati, Hosein Hashemi
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.412A120

Earth is inhomogeneous, which means its elastic characteristics change with depth. The seismic method employs the propagation of waves throughout the earth to locate different structures and stratigraphy. Understanding the wave propagation is an important matter in exploration seismology; therefore modeling of seismic wave is an important tool. To validate the interpreted earth model out of the seismic data, seismic synthetic seismograms should be generated in a process named “seismic forward modeling”. Finite difference method is used as one of the most common numerical modeling techniques. In this paper the accuracy of finite difference method in seismic section modeling is explored on different modeled data set of heterogeneous earth. It is shown that finite difference method completes with migration to reposition the events in their correct location. Two different migration methods are used and various velocities are also tested to determine an appropriate migration velocity. Finally the validly of finite difference modeling is examined using a 2D structural similarity index technique.

Attention Bias to Sad Faces and Images: Which Is Better for Predicting Depression?  [PDF]
Bita Ajilchi, Vahid Nejati
Open Journal of Depression (OJD) , 2013, DOI: 10.4236/ojd.2013.23005
Abstract: This study aims to compare emotion face and emotion image dot-probe tasks in predicting depression. The study uses descriptive correlational methods. The subjects studied during the research included the people between the ages of 19 - 40 years, who visited a particular psychology clinic in Tehran, Iran from 2011 to 2012. The patients studied received a clinical diagnosis, based on an unstructured interview, as per the 4th Edition of Diagnostic and Statistical Manual of Mental Disorders (DSM-IV), and a screening test using the Beck Depression Inventory (BDI, cut off point 21 and higher). Then 82 individuals were selected, using the convenience sampling method. Two computerized dot-probe tasks (emotional faces and images) were administered to the participants. Pearson’s correlation coefficients and univariate regression analysis showed that, in both tasks, attention bias was significantly linked with depression and could predict it (P < 0.01). Fisher’s Z-test further showed that the emotion face dot-probe task could predict depression more precisely than the emotion image dot-probe task (P < 0.01).
Frontal Lobe Function in Chess Players
Majid Nejati,Vahid Nejati
Acta Medica Iranica , 2012,
Abstract: Chess is considered as a cognitive game because of severe engagement of the mental resources during playing. The purpose of this study is evaluation of frontal lobe function of chess players with matched non-players. Wisconsin Card Sorting Test (WCST) data showed no difference between the player and non-player groups in preservation error and completed categories but surprisingly showed significantly lower grade of the player group in correct response. Our data reveal that chess players dont have any preference in any stage of Stroop test. Chess players dont have any preference in selective attention, inhibition and executive cognitive function. Chess players' have lower shifting abilities than non-players.
The Effect Foeniculum vulgare Mill (Fennel) Essential Oil on Blood Glucose in Rats
S. Javadi,M. Ilkhnipour,R. Heidari,V. Nejati
Plant Sciences Research , 2013,
Abstract: Foeniculum vulgare Mill belongs to the Umbelliferae family and is a highly aromatic and flavorful herb with culinary and medicinal uses. The medicinal parts of the plant are the oil, the dried ripe fruit and the seeds. The objective of the study is to comparison the water-distilled essential oil of Iranian Foeniculum vulgare Mill seeds (Fennel) and Estradiol valerate for hypoglycaemic activities in rats. After oil analysis by GC, 5 components were identified in the oil. Among them, trans-anethole (72.67%) was the major component. Healthy female albino rats were divided into 4 groups of 6 animals each including sham operated (control), animals receiving Foeniculum vulgare Mill essential oil (FEO 250, 500 mg kg-1) and estradiol valerate (5 mg kg-1) for 28 days. The findings showed that Foeniculum vulgare Mill essential oil (250 mg kg-1) reduce blood glucose even more than essential oil 500 mg kg-1 and Estradiol. Therefore, Foeniculum vulgare Mill has estrogenic activity on blood glucose level and this effect is dependent to dose. Also, can suggest that effect of essential oil on blood glucose level is due to trans-anethole.
The Effectiveness of Education on Prevention of Osteoporosis among High School Female Students
S Nejati(MSc.),N Rasoulzadeh (MSc.),A Sedighiyani (MSc.)
Hayat Journal of Faculty of Nursing & Midwifery , 2009,
Abstract: Background & Aim: Osteoporosis is a silent and preventable disease that mostly affects women. Osteoporosis prevention requires enhancing knowledge and awareness of students. The purpose of this study was to assess the effectiveness of education on prevention of osteoporosis among high school female students in the sixth distinct of Tehran. Methods & Materials: In this randomized controlled trial, 600 students were selected using cluster sampling method. Data were gathered using a three-part questionnaire including demographic, knowledge, and practice items. After the baseline measurement, the students were randomly allocated into intervention and control groups. Two educational sessions were held for the intervention group. At the end of the sessions, educational booklets were distributed among the students. The educational strategies included giving lectures, and practicing physical exercises. After two weeks, the participants completed the questionnaires again. The educational classes were held for the control group after the last measurements. Results: Data analysis showed that the mean of knowledge score and the participants' practice were significantly different between two groups after the intervention (P<0.001). Conclusion: Regarding the effect of education on enhancing students' awareness and practice about osteoporosis prevention, designing educational programs could be beneficial. Key words: education, osteoporosis, prevention
The Effects of Counseling on Smoking Cessation in Patients Suffering from COPD
M Shaban,S Nejati,A Mehran,J Saidi
Hayat Journal of Faculty of Nursing & Midwifery , 2005,
Abstract: Background & Aim: Cigarette smoking is the primary risk factor for COPD (chronic obstructive pulmonary diseases). Smoking cessation is the most effective strategy for prevention or treatment of COPD. Counseling is a efficacious method for smoking cessation. One of the nurses’ roles is counseling that they can use it in patients’ care. The aim of this study is evaluating the effects of counseling in smoking cessation on patient with COPD. Methods & Materials: This study is an interventional clinical trial and the subjects consisted of 160 patients who had eligibility criteria for this study. Sampling was convenience sampling and subjects were allocated to two patients groups (Interventional and control). In interventional group smoking cessation counseling was used during 12 weeks. Counseling consisted of individual counseling Telephone counseling and self- help material. The data were collected by the questionnaire and Fagrostrom test before study and smoking rate were recorded before, 1 and 3 months after study. Research data were analyzed with spss statistic program and use of descriptive and inferential methods, such as 2, exact fisher test, mann-whitney and etc. Results: The rate of smoking cessation after 1 month in interventional group was 28.8% (n=23) versus in control group was 22.5% (n=18) (p<0.0001) and after 3 month in interventional group was 41.3% (n=33) versus in control group was 26.3% (n=21) (p=0.006). Mann-whitney test showed significant difference between smoking cessation in two groups after 1 and 3 month after study. Conclusion: Results supported the use of smoking cessation counseling to stop smoking on patients with COPD.
A Comparison of Effects of ABVD and ChlVPP Chemotherapeutic Protocols for Hodgkin's Disease on Rats’ Epididiymal and Testicular Tissues
A. Eyshi Oskooii,L. Mohammad Gholizad,S. Zare,V. Nejati
Pakistan Journal of Biological Sciences , 2010,
Abstract: The goal of this study was to determine the effects of ABVD and ChlVPP chemotherapeutic protocols for Hodgkin's disease on the structure of testis and epididymis of male rat. After determining tolerance dose of drugs in pilot study, 24 male rats were divided to four groups: ABVD (doxorubicin, bleomycine, vinblastin, dacarbazine) group, ChlVPP (chlorambucil, vinblastin, procarbazine, prednisolone) group and two control groups one for each treatment group. One half of the lethal dose for 50% of population (LD50) was used for treatment of animals in each protocol. Testes and epididymis tissues were examined for structural changes and serum testosterone level was measured by Lission (chemiluminescence method). Body weight, testis and epididymis weights, in treated rats were significantly less than their control groups specifically in ABVD group was less than ChlVPP group. Decreasing of mean diameter of seminiferous tubules, height of spermatogenic cells and diameter of epididymis in caput, corpus and cauda in ABVD group were significantly more than ChlVPP and control group. The serum testosterone level in ABVD group was significantly less than ChlVPP and control group. According to this study results, the ChlVPP had fewer impairment effects than ABVD on testis and epididymis tissue in tolerance doses on male rats' reproductive system. More clinical trial studies are suggested on Hodgkin's patients. With equal treatment effectiveness, it will be better to use the most reliable and safe treatment especially in young patients.
Page 1 /325481
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.