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Jalili, Sina,Zamani, Jamal,Shariyat, M.,Jalili, N.,Ajdari, M.A.B.,Jafari, M. Techno-Press 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.49 No.5
In this article, stability of composite conical shells subjected to dynamic external pressure is investigated by numerical and experimental methods. In experimental tests, cross-ply glass woven fabrics were selected for manufacturing of specimens. Hand-layup method was employed for fabricating the glass-epoxy composite shells. A test-setup that includes pressure vessel and data acquisition system was designed. Also, numerical analyses are performed. In these analyses, effect of actual geometrical imperfections of experimental specimens on the numerical results is investigated. For introducing the imperfections to the numerical models, linear eigen-value buckling analyses were employed. The buckling modes are multiplied by very small numbers that are derived from measurement of actual specimens. Finally, results are compared together while a good agreement between results of imperfect numerical analyses and experimental tests is observed.
Sina Jalili,Jamal Zamani,M. Shariyat,N. Jalili,M.A.B. Ajdari,M. Jafari 국제구조공학회 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.49 No.5
In this article, stability of composite conical shells subjected to dynamic external pressure is investigated by numerical and experimental methods. In experimental tests, cross-ply glass woven fabrics were selected for manufacturing of specimens. Hand-layup method was employed for fabricating the glassepoxy composite shells. A test-setup that includes pressure vessel and data acquisition system was designed. Also, numerical analyses are performed. In these analyses, effect of actual geometrical imperfections of experimental specimens on the numerical results is investigated. For introducing the imperfections to the numerical models, linear eigen-value buckling analyses were employed. The buckling modes are multiplied by very small numbers that are derived from measurement of actual specimens. Finally, results are compared together while a good agreement between results of imperfect numerical analyses and experimental tests is observed.
Jalili-Kharaajoo Mahdi,Mohammadi-Milasi Rasoul Institute of Control 2005 International Journal of Control, Automation, and Vol.3 No.S
A novel neuro controller based simple neuro-structure with modified error function is introduced in this paper. This controller consists of two independent controllers, known as the voltage regulator and the angular controller. The voltage regulator is used to modify terminal voltage for the purpose of tracking a reference voltage. The angular controller is utilized to guarantee the stability of the system. In this structure each neuron uses a linear hard limit activation function that depends on the controlled variable and its derivatives. There is no need for parameter identification or any off-line training data. Two proposed controllers are merged by a smooth switch to build a complete controller. The effectiveness of the proposed novel control action is demonstrated through some computer simulations on a Single-Machine Infinite-Bus (SMIB) power system.
Dose absorption of Omicron variant SARS-CoV-2 by electron radiation: Using Geant4-DNA toolkit
Jalili Torkamani Mehrdad,Karami Chiman,Sayyah-Koohi Pooneh,Ziaie Farhood,Moosavi Seyyedsina,Zolfagharpour Farhad 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.6
In this research, the Omicron variant of the SARS-CoV-2 virus was simulated and exposed to electron radiation with up to 20 keV energy. Absorbed energy was measured for spike protein, nucleocapsid protein, and envelope of the virus. Simulations were performed by Geant4-DNA in a water environment at temperature of 20 ◦C and pressure of 1 atm. Since the viral RNA is kept inside the nucleocapsid protein, damage to this area could destroy the viral RNA strand and create an inactive virus. Our findings showed that electron beams with an energy of 2.5 keV could cause a maximum absorption dose and consequently maximum damage to the nucleocapsid and effectively be used for inactivation virus.
Optimum design of truss structures under frequency constraints using hybrid CSS-MBLS algorithm
Shahin Jalili,Siamak Talatahari 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.5
Optimum design of truss structures under frequency constraints is a complicated highly non-linear optimization problem with nonconvexsolution space. In this paper, a hybrid Charged System Search (CSS) algorithm with Migration-based Local Search (MBLS)is proposed for resolving this problem. The CSS algorithm as a developed metaheuristic optimization algorithm is inspired by thegoverning laws of electrostatics in physics and the governing laws of motion from the Newtonian mechanics. In the proposed hybridCSS-MBLS algorithm, the convergence speed of the standard CSS algorithm is enhanced by the MBLS mechanism. Numericalresults obtained from some design examples reveal the successfulness and effectiveness of the proposed algorithm in solving trussoptimum design problem under frequency constraints.
Zahra Jalili,Mohammad Reza Salmani Bishak,Mohammad Ali Motafakker Azad,Behzad Salmani,Jaafar Haghighat 세종대학교 경제통합연구소 2019 Journal of Economic Integration Vol.34 No.3
This study reassesses the resource-economic growth nexus by incorporating several channels. Panel time series techniques are used to analyze panel time series data from 1980 to 2015 in 31 oil-rich countries. The results show that oil rent augments economic growth; thus, oil rent is conducive for, rather than an impediment to, economic growth. The role of governance in economic growth is significant in the examined countries. Financial development is an unimportant channel in the resource-growth nexus because it is often unable to mobilize oil rent from the government to the private sector in oil-rich countries. Globalization is advantageous for countries as it promotes economic growth. Finally, war exerts a significant negative effect on growth in the long term.
Mahdi Jalili-Kharaajoo,Rasoul Mohammadi-Milasi 대한전기학회 2005 International Journal of Control, Automation, and Vol.3 No.2
A novel neuro controller based simple neuro-structure with modified error function is introduced in this paper. This controller consists of two independent controllers, known as the voltage regulator and the angular controller. The voltage regulator is used to modify terminal voltage for the purpose of tracking a reference voltage. The angular controller is utilized to guarantee the stability of the system. In this structure each neuron uses a linear hard limit activation function that depends on the controlled variable and its derivatives. There is no need for parameter identification or any off-line training data. Two proposed controllers are merged by a smooth switch to build a complete controller. The effectiveness of the proposed novel control action is demonstrated through some computer simulations on a Single-Machine Infinite-Bus (SMIB) power system.
Genistein improve nicotine toxicity on male mice pancreas
Mohammad Reza Salahshoor,Fatemeh Mirzaei,Shiva Roshankhah,Parnian Jalili,Cyrus Jalili 대한해부학회 2019 Anatomy & Cell Biology Vol.52 No.2
Nicotine is the most toxic factor of tobacco. Genistein is a phytoestrogen and antioxidant that has numerous health benefits. The aim of this study is to evaluate the effects of genistein against toxic properties of nicotine to the pancreas of mice. For this purpose, 48 male mice were randomly assigned into six groups (n=8): normal control, nicotine control (2.5mg/kg), genistein (25 and 50 mg/kg), and nicotine+genistein (25 and 50 mg/kg) treated groups. Various doses of genistein and genistein+nicotine were administered intraperitoneally to animals for 4 weeks. The weight of pancreas, total antioxidant capacity and nitrite oxide of serum, insulin levels, and the number and diameter of islets of Langerhans were investigated. Nicotine administration reduced significantly total antioxidant capacity, insulin, pancreas weight, and the number and diameter of islets of Langerhans and increased nitrite oxide in serum compared to the control normal group (P<0.05). Conversely, genistein and genistein+nicotine increased significantly insulin, total antioxidant capacity, and the number and diameter islets of Langerhans and decreased serum nitrite oxide compared to the nicotine control group. It seems that the genistein can improve pancreas damage following the nicotine administration.
Latifian Masoud,Jalili Moghadam Maryam,Ramzi Jahromi Samar 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.1
Plodia interpunctella and Oryzaephilus surinamensis are found in food storehouses including dates and palm storages. The current study aimed to determine competition and overlap potentials of the two pests of date fruits. Time series models were used to study two species populations and logistic growth model to estimate the effect of density of the species. The results revealed the environmental capacities of O. surinamensis and P. interpunctella were 433 and 1610 (maximum number per 20 g), respectively, and the population growth rates (r) were 1.2 and 1.3, respectively. Ecological balances of the two species were close to each other from the first to the third week. The population of O. surinamensis decreased in the fourth week of the competition. The highest population balance of the two species was in the 14th week. The potential of exploitable ecological niches (e ij ) and the amount of non-exploited ecological niches by any species (z ij ) for O. surinamensis was higher than for P. interpunctella from the 8th week untill the end of sampling period. The overlap of ecological niches in the two species (D) ranged from 0.94 to 1, indicating a complete overlap of temporal activity in the two populations on date palm. The current results of this study can be used by integrated pest management specialists. Information over the effects of species competition on population dynamics and their coexistence can be used to predict population status and to adopt simple pest control methods.