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RET Proto Oncogene Mutation Detection and Medullary Thyroid Carcinoma Prevention
Yeganeh, Marjan Zarif,Sheikholeslami, Sara,Hedayati, Mehdi Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.6
Thyroid cancer is the most common endocrine neoplasia. The medullary thyroid carcinoma (MTC) is one of the most aggressive forms of thyroid malignancy,accounting for up to 10% of all types of this disease. The mode of inheritance of MTC is autosomal dominantly and gain of function mutations in the RET proto-oncogene are well known to contribute to its development. MTC occurs as hereditary (25%) and sporadic (75%) forms. Hereditary MTC has syndromic (multiple endocrine neoplasia type 2A, B; MEN2A, MEN2B) and non-syndromic (Familial MTC, FMTC) types. Over the last two decades, elucidation of the genetic basis of tumorigenesis has provided useful screening tools for affected families. Advances in genetic screening of the RET have enabled early detection of hereditary MTCs and prophylactic thyroidectomy for relatives who may not show any symptom sof the disease. In this review we emphasize the main RET mutations in syndromic and non syndromic forms of MTC, and focus on the importance of RET genetic screening for early diagnosis and management of MTC patients, based on American Thyroid Association guidelines and genotype-phenotype correlation.
Yeganeh Haji Ali Akbari,Mehran Rostami,Morteza Ganjaee Sari,Bahram Ramezanzadeh 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.127 No.-
Undoubtedly, high temperature is one of the most risk factors that aggravate corrosion, which can greatlyaffect the lifespan of metal substrates. Hence, high temperature corrosion control now become one of theexciting research hotspot for researchers. For corrosion prevention, the application of corrosion inhibitorsis one of the easy and practical ways and with the emergence of nanomaterials, smart inhibitors has beenremarked as a milestone in corrosion science. In this study, layered double hydroxide (LDH) nano-carrierencapsulated gallic acid (GA) was applied to control steel corrosion in high temperature 3.5% NaCl salineenvironment. The structural evaluation of this nanocomposite has been done with the help of X-raydiffraction (XRD), Fourier transform infrared (FTIR) and Brunauer-Emmett-Teller (BET) tests and theresults have confirmed the successful synthesis of this nanocomposite. Then, polarization test predictedthe inhibition mechanism and the results shown the mixed inhibition is responsible for 68% and 60% ofcorrosion controlled in 35 and 45 environment, respectively. But in order to better evaluation, the performanceof the nanocomposite has been checked via electrochemical impedance spectroscopy (EIS)evaluations. Based on the studies, it has been found that high temperature has severely limited the performanceof the pristine GA, but LDH/GA nanocomposite has been able to achieve 72% efficiency at 35 Cand 58% efficiency at 45 C. Finally, Field emission scanning electron microscopy (FE-SEM) captures aidedto assess the morphology of immersed surfaces at different temperatures and Energy Dispersive X-RayAnalysis (EDX)/MAP tests estimated the elemental structure of the samples.
Detrimental impact of cell phone radiation on sperm DNA integrity
Yeganeh Koohestanidehaghi,Mohammad Ali Khalili,Fatemeh Dehghanpour,Mohammad Sei The Korean Society for Reproductive Medicine 2024 Clinical and Experimental Reproductive Medicine Vol.51 No.1
Radiofrequency electromagnetic radiation (RF-EMR) from various sources may impact health due to the generation of frequency bands. Broad pulses emitted within frequency bands can be absorbed by cells, influencing their function. Numerous laboratory studies have demonstrated that mobile phones-generally the most widely used devices-can have harmful effects on sex cells, such as sperm and oocytes, by producing RF-EMR. Moreover, some research has indicated that RF-EMR generated by mobile phones can influence sperm parameters, including motility, morphology, viability, and (most critically) DNA structure. Consequently, RF-EMR can disrupt both sperm function and fertilization. However, other studies have reported that exposure of spermatozoa to RF-EMR does not affect the functional parameters or genetic structure of sperm. These conflicting results likely stem from differences among studies in the duration and exposure distance, as well as the species of animal used. This report was undertaken to review the existing research discussing the effects of RF-EMR on the DNA integrity of mammalian spermatozoa.
A. Yeganeh-Salman,M. Lezgy-Nazargah 국제구조공학회 2023 Structural Engineering and Mechanics, An Int'l Jou Vol.85 No.4
The non-linear static analysis of reinforced concrete (RC) structures using the three-dimensional (3D) finite element method is a time-consuming and challenging task. Moreover, this type of analysis encounters numerical problems such as the lack of convergence of results in the stages of growth and propagation of cracks in the structure. The time integration analysis along with the mass scaling (MS) technique is usually used to overcome these limitations. Despite the use of this method in the 3D finite element analysis of RC structures, a comprehensive study has not been conducted so far to assess the effects of the MS method on the accuracy of results. This study aims to evaluate the accuracy of the MS method in the non-linear quasi-static finite element analysis of RC structures. To this aim, different types of RC structures were simulated using the finite element approach based on the implicit time integration method and the mass scaling technique. The influences of effective parameters of the MS method (i.e., the allowable values of increase in the mass of the RC structure, the relationship between the duration of the applied load and fundamental vibration period of the RC structure, and the pattern of applied loads) on the accuracy of the simulated results were investigated. The accuracy of numerical simulation results has been evaluated through comparison with existing experimental data. The results of this study show that the achievement of accurate structural responses in the implicit time integration analyses using the MS method involves the appropriate selection of the effective parameters of the MS method.
Comparison of Hydraulic Performance of Triangular Side Weirs with a Focus on the Overhang Type
Maryam Yeganeh,Mohammadreza Jalili Ghazizadeh,Mojtaba Saneie,Ehsanollah Zeighami 대한토목학회 2023 KSCE Journal of Civil Engineering Vol.27 No.10
This paper has studied the performance of different triangular labyrinth side weirs. To evaluate the effectiveness of the various schemes: triangulating, adding sloped floors to the cycles, apex overhanging, and changing to an asymmetry plan were experimentally investigated. Continuous improvement has been achieved in these examinations. The average increase of the discharge coefficients relative to the rectangular side weirs was 80, 82, 87, and 96% for triangular side weirs, triangular side weirs with sloped floors, triangular side weirs with sloped floors and overhangs, and asymmetric triangular side weirs with sloped floors and overhangs, respectively. Velocity components near side weirs also confirmed higher performance for the asymmetric plan. Two new equations have been presented to estimate the discharge coefficient of the two-cycle triangular side weirs and triangular side weirs with sloped floors and overhangs. The proposed equation for the triangular side weirs was supported by the present laboratory data, as well as data from other researchers covering different apex angles of 35°, 45°, 60°, 90°, 120°, and 140°. The study results can be used to design triangular side weirs for enhancing the discharge capacity where the channel bank is limited to pass the required flow rate.
딥러닝을 활용한 교육용 트러스 구조물 시뮬레이션 시스템 개발
차서연 ( Cha Seoyeon ),아자데 ( Yeganeh Fallah Azadeh ),윤형철 ( Yoon Hyungchul ) 한국구조물진단유지관리공학회 2021 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.25 No.2
토목공학에서 배우는 구조역학 수업에서는 교량 등 규모가 큰 시설물들을 해석하는 방법에 대해서 배운다. 하지만 큰 규모로 인하여 수업현장 내에서 실제 구조물들을 육안으로 확인하며 해석하는 데에는 한계가 있다. 최근 주목받고 있는 딥러닝 기술을 이용하여 이러한 문제를 해결할 수 있을 것으로 기대된다. 본 연구에서는 학생들이 직접 제작한 모형 구조물들이 형상과 하중에 따라 응력 분포가 어떻게 달라지는지를 직관적으로 체험할 수 있는 교육용 도구를 개발하고자 한다.