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Akhtari-Zavare, Mehrnoosh,Juni, Muhamad Hanafiah,Said, Salmiah Md.,Ismail, Irmi Zarina Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1
Background: Breast cancer is the most common cancer and the second principal cause of cancer deaths among women worldwide, including Malaysia. Methods: A cross-sectional study was carried out among 262 female undergraduate students in University Putra Malaysia using a validated questionnaire which was developed for this study. Results: The mean age of respondents was $22{\pm}2.3$ years. Most of them were single (83.1%), Malay (42.3%) and 20.7% reported having a family history of breast cancer. Eighty-seven (36.7%) claimed they had practiced BSE. Motivation and self-efficacy of the respondents who performed BSE were significantly higher compared with women who did not (p<0.05).There was no association between BSE practice and demographic details (p<0.05). Logistic regression analysis indicated that women who perceived greater motivation (OR=1.089, 95%CI: 1.016-1.168) and had higher confidence of BSE (OR=1.076, 95%CI: 1.028-1.126) were more likely to perform the screening. Conclusions: The findings show that Malaysian young female's perception regarding breast cancer and the practice of BSE is low. Targeted education should be implemented to improve early detection of breast cancer.
Akhtari-Zavare, Mehrnoosh,Juni, Muhamad Hanafiah,Ismail, Irmi Zarina,Md Said, Salmiah,Latiff, Latiffah A Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9
Background: Breast cancer is the most frequently occurring cancer in women and the most common cause of cancer death worldwide. Materials and Methods: A cross-sectional study was carried out among 792 female undergraduate students in public universities in Klang Valley, Malaysia, from January to April 2011. Data were collected using a validated questionnaire developed for this study. Results: The mean age of respondents was $21.7{\pm}1.2$ years. Most of them were single (96.8%), Malay (91.9%) and 150 (19.6%) claimed they had practiced BSE. There was a significant differences between performers and non-performers correlated to age, marital status, check breast by doctor, and being trained about BSE. Performers had lower mean scores for perceived barriers and susceptibility and higher mean score for confidence. Stepwise logistic regression analysis yielded four significant predictor variables. Conclusions: Overall our findings indicate that the practice of BSE while perceived as being important is not frequently practiced among female in Malaysia. Targeted education should be implemented to improve early detection of breast cancer.
Electrical Impedance Tomography as a Primary Screening Technique for Breast Cancer Detection
Akhtari-Zavare, Mehrnoosh,Latiff, Latiffah A Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.14
Electrical impedance tomography (EIT) is a new non-invasive, mobile screening method which does not use ionizing radiation to the human breast. It is based on the theory that cancer cells display altered local dielectric properties, thus demonstrating measurably higher conductivity values. This article reviews the utilisation of EIT in breast cancer detection. It could be used as an adjunct to mammography and ultrasonography for breast cancer screening.
Knowledge of Breast Cancer and Breast Self-Examination Practice among Iranian Women in Hamedan, Iran
Akhtari-Zavare, Mehrnoosh,Ghanbari-Baghestan, Abbas,Latiff, Latiffah A.,Matinnia, Nasrin,Hoseini, Mozhgan Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.16
Background: In Iran, breast cancer is the most prevalent cancer in women and a major public health problem. Methods: A cross sectional study was carried out to determine knowledge on breast cancer and breast self-examination (BSE) practices of 384 females living in the city of Hamadan, Iran. A purposive sampling method was adopted and data were collected via face-to-face interviews based on a validated questionnaire developed for this study. Results: Among respondents 268 (69.8%) were married and 144 (37.5%) of the respondents reported having a family history of breast cancer. One hundred respondents (26.0%) claimed they practiced BSE. Level of breast cancer knowledge was significantly associated with BSE practice (p=0.000). There was no association with demographic details (p<0.05). Conclusion: The findings showed that Iranian women's knowledge regarding breast cancer and the practice of BSE is inadequate. Targeted education should be implemented to improve early detection of breast cancer.
Akhtari-Zavare, Mehrnoosh,Ghanbari-Baghestan, Abbas,Latiff, Latiffah A.,Khaniki, Hadi Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.4
Background: Breast cancer is the most common cancer and the second principal cause of cancer deaths among women worldwide, including Malaysia. This study focused on media choice and attempted to determine the communication channels mostly used and preferred by women in seeking information and knowledge about breast cancer. Materials and Methods: A cross sectional study was carried out to examine the breast cancer prevention information seeking behavior among 450 students at one private university in Malaysia. Results: The mean age of respondents was $25{\pm}4.3years$. Common interpersonal information sources were doctors, friends, and nurses and common channel information sources were television, brochure, and internet. Overall, 89.9% used cell phones, 46.1% had an interest in receiving cell phone breast cancer prevention messages, 73.9% used text messaging, and 36.7% had an interest in receiving text breast cancer prevention messages. Bivariate analysis revealed significant differences among age, eduation, nationality and use of cell phones. Conclusions: Assessment of health information seeking behavior is important for community health educators to target populations for program development.
Akhtari-Zavare, Mehrnoosh,Latiff, Latiffah A,Juni, Muhamad Hanafiah,Said, Salmiah Md,Ismail, Irmi Zarina Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.15
Background: In Malaysia, breast cancer is the first cancer among females regardness of race. Aim: The purpose of this study was to identify the knowledge and BSE practice among undergraduate female students at four public universities in Klang Valley, Malaysia. Materials and Methods: This cross-sectional study was conducted among 820 undergraduate female students using a self-administered questionnaire covering socio-demographic data, knowledge of breast cancer and BSE practice. Results: The mean age of the respondents was $21.7{\pm}1.2$ years. The majority of them were single (96.8%), Malay (91.9%) and 16.5% of respondents had a family history of breast cancer. This study showed low level of knowledge on breast cancer and breast self-examination among participants. Only 19.6% participants were performing BSE regularly. Knowledge of breast self-examination was significantly associated with BSE practice (p=0.00). Also, there were significant associations between performing BSE with age, marital status and being trained by a doctor for doing BSE (p<0.05). Conclusions: Our findings showed that the rate of BSE practice and knowledge of breast cancer is inadequate among young Malaysian females. A public health education program is essential to improve breast cancer prevention among this group.
Yasin Akhtari,Tahereh Tohidi Moghadam,Bijan Ranjbar 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.15 No.01
Gold nanoparticles are metallic nanostructures with wide range of applications in biomedicine and biosensing. Among diverse morphologies of gold nanostructures, gold nanorods have attracted much more attention for their outstanding structure, optical property and function. The unique characteristic of these nanostructures encourages their integration with biomolecules of interest for versatile biomedical proposes. In this effort, amyloid fibrils with well-known mechanical strength and chemical stability have been used as biotemplates for assembly of gold nanorods to exploit dual property of both nano and bio counterparts in a hybrid nanoscaffold. To maximize the interaction of the nanostructures with the biotemplate, surface of the gold nanorods was modified with biocompatible polystyrene sulfonate (PSS). Spectroscopic and microscopic techniques including UV–Vis, CD, ThT and TEM were used to characterize formation of insulin amyloid fibrils, gold nanorods and their assemblies on the biotemplate. Morphology of gold nanorods was also monitored upon interaction with amyloid fibrils. Electrochemical impedance spectroscopy of the hybrid nanoscaffold showed that increase in the concentration of the assembled nanostructures on the biotemplate has clearly led to enhancement of conductivity. Results of this investigation highlight gold nanorods as promising candidates in design and fabrication of novel hybrid nanoscaffolds of enhanced conductivity, especially for biosensing and tissue engineering purposes.
Alireza Akhtari,Alireza Mortezaei,Ali Hemmati 국제구조공학회 2021 Structural Engineering and Mechanics, An Int'l Jou Vol.78 No.5
The present experimental study evaluated the seismic performance of six engineered cementitious composite (ECC) columns strengthened with carbon fiber reinforced polymer (CFRP) laminates under cyclic lateral loading. The ECC columns damaged and crushed in the first stage of cyclic tests were repaired using the ECC with a certain polyvinyl alcohol (PVA) fiber and strengthened with flexural and sheer CFRP laminates and then re-assessed under the cyclic loading. The effects of some variables were examined on lateral displacement, energy absorption and dissipation, failure modes, crack patterns, load bearing capacity and plasticity, and the obtained results were compared with those of the first stage of cyclic tests. The results showed that retrofitting the ECC columns can improve their performance, plasticity and load-bearing threshold, delayed the concrete failure, changed the failure modes and increased the energy absorbed by the strengthened columns element by over 50%.
Ali Akbar Akhtari,Omid Seyedashraf 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.4
The aim of this paper is to study the effect of middle vanes on the flow structure in open-channels with sharp 60° bends. For thispurpose, two cases are considered, i.e. bends with (one-vane case), and without (no-vane case) middle vanes. To minimize thesystematic errors, the models are also numerically simulated using the Standard and RNG based k-ε turbulence models. Thevalidation process shows satisfactory agreement between the measured and predicted results with average RMSEs of 0.18 and 4.82,for the water depth and velocity values, respectively. The comparison of the obtained results for the no-vane and one-vane cases ispresented. It is found that middle vanes are efficient to minimize the intensity of secondary currents, super-elevation, and thetendency to flow separation in the convex bank of the bend. According, non-submerged vanes can help to reduce erosion andsedimentation the bend.
Silicon carbide (SiC) nanotubes as potential sensors for organophosphate molecules
Keyumars Hassanzadeh,Keivan Akhtari,Bahareh Fakhraei,Ghazal Akhtari,Halaleh Hassanzadeh 한국물리학회 2017 Current Applied Physics Vol.17 No.5
The detection and clean-up of the organophosphate (OP) compounds have special importance for those who work in the field of health and governments due to the bad effects of these compounds on human health. In this paper, we have employed the PBE level of theory and ultrasoft pseudopotentials to investigate the ability of silicon carbide nanotubes (SiCNTs) as sensors for organophosphate detection. We found that the binding energy and charge transfer for adsorption of OP on (6,0) SiCNT represents the formation of a strong bond. However, the DE Gap demonstrates the significant changes (12%) in the electronic properties of (10,0) SiC nanotubes which could induce considerable alteration in the SiCNT electrical conductivity. According to the results, the OP can be adsorbed on SiCNT and these types of nanotubes can be promising candidates for detecting organophosphate compounds. The non-equilibrium Green function (NEGF) method shows good performance for the sensor sensitivity.