Showing 7 results for Pashaei
Volume 5, Issue 4 (12-2016)
Abstract
During 2010–2011, a faunistic study of the family Syrphidae was carried out in Torbat Heydarie, Roshtkhar and Khaf (Razavi Khorasan province), northeastern Iran. Among the collected specimens, we found two species, Paragus gussakovskii Bańkowska and Platycheirus immarginatus Zetterstedt which are new records for the fauna of Iran.
Volume 10, Issue 2 (Summer 2022)
Abstract
The "interaction behavior analysis" system is a theory of contemporary psychological schools in response to how the mind works, why we decide to do something, and how we stop something from being done. The present article, based on Eric Byrne's theories and how the inner states of "parent,adult,child"change,examines the components of "mental empowerment" in"Traveling". What is reflected in the exchanges and interactions of the"winners and losers" of the "traveling" characters is the power of "mental empowerment"on each side of the pyramid. According to the component analysis, the "parent" mode has a higher frequency than the "adult and child" and determines the power of the "parent"to negotiate and exchange mental and behavioral exchanges between individuals. The present study is an analytical-descriptive method and in response to the question "What are the components of psychological analysis as a result of"Traveling"by"Mahshid Amirshahi"?"Has studied the characters of the novel based on the psychological theory of behavior analysis by Eric Byrne. In the contemporary period, the conceptual connection of many sciences such as literature and psychology reveals the connection between the literary framework of the novel and fiction with new psychological theories and perceptions. It has a wider scope and the "parent" mode plays the most important role in data processing and decision-making process.The result of examining the components is the poor performance of "adults"and "children"against "parent"decisions, and that "parent" decisions are not based on the quality and appropriateness of solutions, but on the basis of institutionalized information and high data capacity in the field.
Behzad Janizadeh, Morteza Dardel, Mohammad Hadi Pashaei, Reza Akbari Alashti,
Volume 15, Issue 1 (3-2015)
Abstract
Abstract In this work, nonlinear electromagnetic vibration energy harvesting from cantilever beam under base harmonic oscillation is investigated and the effects of electromagnetic parameters on behavior of system is considered. For modeling assumed mode method is used, and beam is modeled in according to Timoshenko theory, which includes shear deformation and rotary inertia. In energy harvesting, the frequency response of the system is very important because it shows the best areas for energy harvesting and it is a good criterion for designing energy harvesters, hence a semi analytical method is used to find simply the amplitude of oscillation in terms of excitation frequency. In this method, at first equations of motion are solved with complex averaging method and obtained equations are solved with continuation method. For validation, comparison between results obtained from numerical and semi analytical method is given. Also comparison between linear and nonlinear system, and stability of periodic response and their bifurcations are given. In addition, in order to the effect of number of mode shapes and convergence of solution, frequency response of one, two, three modes and four modes cases are compared with together.
Mehdi Kazemiyan, Hamed Afrasiab, Mohammad Hadi Pashaei,
Volume 16, Issue 2 (4-2016)
Abstract
Recent observations have shown that artery stenosis occurs as multiple-stenosis in 70% of patients with atherosclerosis plaques. Accordingly, the frequent occurrence of double-stenosis in blood arteries has inspired this paper to investigate and compare the plaque rupture risk in different arrangements of common plaque shapes in a double-stenosis. The plaque von-Mises stress in plaque fibrous cap is calculated by finite element modeling of the fluid-structure interaction (FSI) between the blood flow, artery and plaque components. Arbitrary Lagrangian-Eulerian approach is employed for FSI simulations and a benchmark problem dealing with wave propagation in a fluid-filled elastic tube is used for model verification. Transient velocity and pressure conditions of actual pulsatile blood flow through coronary artery are prescribed. The blood is assumed to be a Newtonian fluid and hyper-elastic material model is employed for describing nonlinear behavior of the human tissue composed of the arterial wall, lipid core and fibrous cap. It was observed that the arrangement composed of two diffused plaques is subjected to the maximum von-Mises stress, while the arrangement of ascending-descending plaques experiences the minimum von-Mises stress. The effect of different parameters such as the stenosis degree, the space length between the plaques, and the plaque length is studied and discussed.
Volume 16, Issue 91 (September 2019)
Abstract
The objective of this study was to evaluate the effects of pasteurization temperatures and cold shelf storage on chemical, microbial, and quality characteristics functional milk-carrot drinks. For this purpose, milk-carrot drinks based on cow milk were prepared with different concentration of carrot juice (10, 20, 30, 40, and 50%) and pasteurized at 65, 70, and 75 °C for 30 min. Physicochemical characteristic such as total acidity, pH, Sugar (total sugar, reducing sugar, and non-reducing sugar), total protein, coliform, pasteurization efficiency, stability, phase separation, and sensory parameters were measured during storage times (1, 4, 7, 10, and 13 d) at 4 °C. The results indicated that total acidity and pH of milk-carrot samples pasteurized at 70 °C had lower variation than other treatments during cold shelf. The highest non-reducing sugar content was belong to 50% carrot juice (75 °C) at 13 d and the highest reducing sugars was observed at 4 d for all samples in pasteurization temperatures were. Pasteurization temperatures and storage time had not significant effect on total protein of samples with different carrot juice content. Pasteurization efficiency test showed that all of the pasteurization temperature-time treatments could completely inactivated alkaline phosphatase enzyme. But in coliform test, samples with 50% carrot juice (65 °C) at 13 d and 30% carrot juice (75 °C) at 13 d showed 3 and 12 colonies respectively. Stability test and phase separation indicated that all treatments during cold shelf had necessary stability. Sensory evaluation determined that samples containing 40 and 50% carrot juice had the highest total acceptation. I t could be concluded that the optimum conditions for functional milk-carrot drink formulation, pasteurization and storage time for milk-carrot drink were 40 and 50% carrot juice substitution, 70 °C pasteurization and 10 d cold shelf stability respectively.
Volume 19, Issue 128 (October 2022)
Abstract
The aim of the study was to investigate the effect of sodium glutamate pretreatment, as a substrate, on the production of gamma aminobutyric acid during wheat germination. For this purpose, wheat grains (Alvand variety) were treated with different amounts of sodium glutamate (0, 50, 100, and 150 mg kg-1) during 72 h germination. Physical properties (such as germinated seed weight, number of germinated seeds and germination length) and bioactive compounds contents (such as gamma aminobutyric acid, total flavonoids, total phenols and free radical scavenging activity of DPPH) were measured at 24, 48 and 72 h time intervals. The results showed that germinated seed weight and number of germinated seeds increased with increase of sodium glutamate concentration and germination time. Also, the total flavonoids contents decreased in all samples during germination time and the increase of glutamic acid did not have a significant effect on its amount. The highest levels of total phenol, gamma aminobutyric acid and antioxidant capacity were observed in the sample treated with 150 mg kg-1 on the first day of germination equal to 4589 μg GAE g-1, 303 mg 100 g-1 and 57%, respectively. In all treatments, the amount of these compounds did not change significantly during germination time (p >0.05). Finally, it was concluded that the 24 hours germination time and the 150 mg kg-1 glutamate was the most appropriate treatment to increase the biosynthesis of gamma-aminobutyric acid and anatioxidant activity in germinated wheat grains.
Volume 20, Issue 2 (6-2016)
Abstract
In today's competitive world where change is one of the most important features is necessary for the preservation and conservation organizations exist Looking agility to be able in the shortest time and at minimal cost to improve the quality and innovation in their products and services. This paper aims to examine the impact of organizational culture on organizational agility capabilities of the armed forces organizations with descriptive - correlation to the written survey And tries to correlate the five hypothesis "group decision-making culture", "culture of learning", "Culture power sharing", "culture of participation" and "risk tolerance" on "organizational agility" to the test. To test these hypotheses, a researcher-made questionnaire consisting of 48 questions using the Cronbach's alpha coefficient using the software SPSS, 0/994, respectively. A survey by Morgan estimated 140 people who responded to the questionnaire. The results of structural equation is as follows. Between the "culture of group decision-making", "learning culture", "culture of power sharing", "culture of participation", "risk tolerance" and "organizational agility" There is a significant positive relationship.