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Mercury levels in hepatopancreas, muscle and exoskeleton tissues of male and female green tiger prawn, P.semisulcatus, from the Persian Gulf were compared. Significantly higher levels (p<0.05) of mercury in female prawn and hepatopancreas tissue were encountered (p<0.05). Significantly higher concentration (p<0.05) of the mercury was also observed in summer than in winter season. This variation could result in internal biological cycle of the organism or variation in bioavailability of mercury in environment.

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Cell concentrations and growth rate of Dunaliella salina Teodoresco in light intensities e. g. 50 and 150 µmol. photons.m-2.s-1 and temperatures 25 ± 0.5 and 31 ± 0.5 oC (Mean ± SD) were studied. The algae was isolated from the Urumieh Lake and cultured in various treatments (n=12). Algae cells were counted regularly using Thoma counting chamber in 3 replicates on daily basis. The curve of changes in population was plotted. The specific growth rate (SGR; d-1) was calculated and compared within treatments by means of two ways ANOVA Analysis. The highest cell concentration (Mean ± SD) 4.8 ± 0.6 × 10 6 cell.ml-1 was observed in light intensity of 150 µmol. photons.m-2.s-1 and temperature 25 ± 0.5 oC. The minimum cell concentration (2.8 ± 0.3 × 10 6 cell.ml-1) was observed in light intensity of 50 µmol. photons.m-2.s-1 and temperature 31 ± 0.5 oC. Specific growth rate showed significant differences in various treatments (P

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Among the various types of folklore literature, due to the legends of Azerbaijan are part of the oldest of these stories and from the perspective of the theme is one of the best and most content-rich stories, in the world, they have a special place. The breadth of information, the diversity of subjects and the historical background presented in these stories, has identified Azerbaijan as one of the most important centers for the creation and influence of folk tales in the world. The study of the cognitive layout of the myths of Azerbaijan is a significant contribution to understanding the beliefs, customs the people of Azerbaijan. Beliefs and opinions that are full of amazing magical happenings, occurring with the involvement of creatures like ogre and fairy tale, and so on. Therefore, it is worth noting that folk tales in the folklore literature of the Azerbaijani people share the same aspects with all the diversity and appearance variation. The authors of this article will study the plot story of the thirty myths of Azerbaijan and study and analyze the early, middle and final plot sections of these folk tales in Azerbaijan. By studying the cognitive layout of the myths of Azerbaijan, it was concluded that in the folk tales of Azerbaijan the foundation of creation was based on the presentation of moral messages. Within these myths, it's more about teaching ethics and love in life, and what makes plot stories stronger is their amazing attraction to their audience.

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One of the methods to create loyalty among customers is presenting a value through customer clubs which is beyond the intrinsic value of the product or service. In order to achieve this aim, a new perspective of customer club’s basics that is based on findings business model is needed. As a result, the purpose of this study is to explore customer club Hafez Insurance business model as the first private insurance in free zones of Iran, with an emphasis on"innovation"and" customers block ".In this research, we try to find out the answer of questions such as customers segmentation in the insurance industry, Identifying distribution channels, the type of services and products that offered in the club correspond to the target of customers and the type of value which is created for customers to increase loyalty. From the data collection method standpoint, current study is a qualitative research and was conducted through in-depth interviews and semi-structured focus group. This focus group meeting is consist of 12 experts of Hafez Insurance Company that have been selected based on purposefully sampling method. Finally, by analyzing the findings from focus group research and using the Atlas.ti software, basics of "innovation" and " customers blocks are explained. The content of qualitative data suggests that components of customers block include three themes of customers segmentation, distribution channels and communication with customers, 11 sub-components and 40 items. Components of innovation include the proposed theme for value, eight sub-components and 29 items.

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Aims: This study aimed to investigate and analyze the internal factors affecting the development of health tourism.
Participants & Methods: The statistical population was the Cultural Heritage and Tourism Organization experts, the managers of travel services offices, and doctors in the field of health tourism. In the beginning, by examining the background of research and library study, the effective factors on health tourism development were identified and extracted. The next stage included semi-structured interviews with some experts in this field in order to identify the main factors and specialize the map. In order to nurture the factors and the relationships between them the Delphi method was continued with 15 experts.
Findings: Two scenarios were presented; The first scenario results show that if only attention was paid to marketing and advertising, in addition to security, specialized medical staff, and tourist attractions, other factors will also change for the better. However, the second scenario results indicate the low sensitivity of other factors to the number of medical centers. This means that the number of medical centers, regardless of their facilities and up-to-date equipment, cannot attract health tourists to an area.
Conclusion: The importance of human resources and the capability of the medical staff in the model shows the necessity of this factor in the eyes of health tourists. Specialized human resources seriously influence the effective provision of health services. Human resources are the most important factor in the health system.

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Background: This study compared the efficacy of ceftazidime-avibactam (CAZ-AVI) with colistin for treating carbapenem-resistant Enterobacteriaceae (CRE) infections.
Materials & Methods: This retrospective study included 120 patients with a confirmed CRE infection and information on causative bacteria and their susceptibility pattern. Patients were divided into two groups: those receiving CAZ-AVI and/or aztreonam (n=53) and those receiving colistin (n=67) for at least seven days. The colistin group was further subdivided into those who switched to CAZ-AVI due to poor outcomes. Patient data, including demographics, clinical history, microbiological data, Charlson comorbidity index, and outcomes, were collected and analyzed. Mann-Whitney U, Chi-square, and Fisher’s exact tests were used to compare the groups. P< .05 was considered statistically significant.
Findings: The findings revealed comparable clinical characteristics, there were no major differences in mean duration of hospitalization, intensive care unit (ICU) admission, and Charlson scores between the two groups. The CAZ-AVI group required a significantly longer duration of antibiotic treatment (p= .018) and more source control measures (p= .009). Klebsiella pneumoniae was the predominant causative pathogen in both groups, with NDM and OXA48 carbapenem resistance genes being the most common. Toxicity (p= .001) and mortality (p= .049) were significantly higher in the colistin group. Higher improvement was observed among the CAZ-AVI group and higher mortality among the colistin group (p= .049).
Conclusion: CAZ-AVI could serve as an alternative to colistin for treating CRE infections. Further research is necessary to confirm these findings and provide evidence-based guidelines for managing CRE infections in India.
 

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Aims: Tehran, as the capital of Islamic Iran, has a strong and valuable history in the modern period. The formation of new Tehran in less than three centuries ago and its dramatic changes in one and half century have created many problems for it. The most important identified challenge is the need to review Tehran's contemporary heritage, to materialize Islamic Iranian urban identity.

Methods: The research has a qualitative approach, which is known as "meta-analysis". The research technique is the analysis of documents through which the research examines the subject literature and upstream documents. Relying on "complete research" and "theoretical saturation" has given special validity to the research results.

Findings: The results of the research refer to ten concepts that are possible to recognize the modern identity of the city of Tehran, and redesign the Iranian Islamic identity of the city of Tehran through them. Things like 1- street, 2- urban open space, 3- religious places, 4- city geometry, 5- urban neighborhoods, 6- intermediate space, 7- cultural space in the city, 8- residence, 9- urban squares and 10- Education and educational spaces.

Conclusion: The results of the research emphasize the importance of "urban identification", "popularization" and "intelligence" as the three pillars of Iranian Islamic identity in the field of tasks and missions of Tehran City Beautification Organization; The issue that is needed to realize the vision of "Tehran; The metropolis is the model of the Islamic world" and its various dimensions are necessary and necessary.
 

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In this paper, the natural convection of water-Al2O3 nanofluid in a square enclosure exposed to a magnetic field is numerically investigated. The enclosure is bounded by two isothermal vertical walls at different temperaturesof Th and Tc.The two horizontals walls of the enclosure are thermally insulated. A vertical plate (membrane separator) with a negligible thickness and a variable height is located in the middle of the chamber. Discretization of the governing equations are achived through a finit method and are solved using the SIMPLE algorithm. Based on the results of the numerical solution, the effects of the relevant parameters such as the dimensionless height of the membrane separator, Rayleigh number, the solid volume fraction and the Hartmann number on the flow field and the heat transfer rate are investigated. The results show that the heat transfer rate decreases with an increase of the dimensionless height of the membrane separator and an increase of the Hartmann number. The heat transfer rate, however, increases as the Rayleigh number increases. Depending on the Rayleigh number, the thermal performance of the enclosure is either improved or deteriorated as the solid volume fraction is increased.

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In this study, longitudinal dynamic derivatives of an airfoil of the type NACA 6-series, oscillating in pitching and plunging motions were calculated using variation of pitching moment coefficients with angle of attack in various conditions, based on wind tunnel data. Various parameters of the tests were mean angle of attack, reduced frequency and amplitude of oscillation. To calculate the longitudinal dynamic derivatives in harmonic oscillations, the Taylor's series and integral of Fourier were used. Both the methods had the same results and could be extended to each flight vehicles. The effect of parameters on variation of longitudinal oscillatory derivatives was investigated, in three different regions of oscillation: before, over and post stall conditions. The results showed that variation of the longitudinal oscillatory coefficients with angle of attack is different in the pre-stall and over stall conditions with respect to post-stall region. The effect of reduced frequency on stability of the motion is different for two types of oscillations. Increasing the reduced frequency resulted in reducing the stability of plunging motion, but has a little effect on the stability of pitching motion.

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In this paper, the result of a numerical study on the natural convection in an inclined T shap cavity filled with Water-Cu nanofluid with the presence of a constant magnetic field was investigated. A heat source embedded on the bottom wall of enclosure, the upper wall is cold and the other walls are adiabatic. Discretization of the governing equations are achieved through a finite volume method and solved with SIMPLE algorithm. The Hartmann number has been varied from 0 to 80 and the cavity has been twisted under the angles between 0 to 90 degrees. The findings of study show that the effect magnetic field on the average Nusselt number is higher in high Reyleigh number. In Ra=105, the increase in nanofluid, to the Hartman number 20, contributes to decrease of the average number and in the Hartman number 40 and more, causes the average Nusselt number to increase. In Ra=106 , the increase in nanofluid, to the Hartman number 20, contributes to increase of the average number and in the Hartman number 40 and more, causes the average Nusselt number to decrease. The results also indicate that, the maximum heat transfer, in Ra=105 and Ra=106 accurse at 67.5° angle. the minimum heat transfer, in Ra=105 and Ra=106 accurse at 0° and 22.5° angle respectively.

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In current study, for a special fabric that is used for parachute canopies; the permeability of the canopy has been estimated empirically and numerically. Moreover, the coefficients of Darcy's equation resulted from experiment, used in 2D numerical simulation of a single parachute-like body. Assuming permeability for the fabric, the drag coefficient was showed a 39 percent decrease rather than solid canopy. Comparison between solid canopy and permeable one, showed significant differences in the results, especially in streamlines and pressure distribution. In order to diminish the numerical effort, the canopies were taken as 2D hemi-spherical porous cups. So-called two dimensional numerical simulations using FLUENT® software was conducted on a group of paired permeable with two different diameters in various vertical and horizontal distances. The diameter of lower canopy was considered as half of the upper one. Tandem canopies use in order to reduce the inflation shock of main parachute. The lateral relative displacement of lower canopy to upper one has been considered in order to stimulate true descending conditions. The results showed the interaction between flow fields of canopies has strong effect on drag coefficient of the cluster parachutes. Therefore, determining the length of the risers as the vertical distance and relative diameter of parachutes and their interactions found to have tremendous effect in designing cluster parachutes. The study showed that the most desirable longitudinal distance between two canopies was equal to the diameter of lower canopy.

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In this study, the natural convection heat transfer is numerically examined in a square enclosure filled with a non-Newtonia power-law fluid. Two fixed temperature baffles are mounted on the left wall of the enclosure. The left wall of the enclosure and the baffles installed on it, are at a constant temperature of T_h and the right wall of the enclosure is at a constant temperature of T_c, while its horizontal walls are thermally insulated. The governing equations for the power-law fluid flow are solved with the numerical finite difference method based on the control volume formulation and SIMPLE algorithm. The study investigates the effects of relevant parameters such as the Rayleigh number (〖10〗^3≤Ra≤〖10〗^6), the power-law index (0.8≤n≤1.4), the baffles length (0≤B≤0.5) and the baffles distance from each other (0.1≤D≤0.8) on flow and temperature fields and the rate of heat transfer. The results show that an increase in Rayleigh number, particularly when n

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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.

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Stenting is considered to be the favoured tool for therapy of coronary stenosis disease. However, despite the many advantages of this treatment strategy, its outcome may be undermined by the restenosis occurrence in the stent deployment site. Observations have shown that stent deployment in the artery alters the hemodynamic parameters such as wall shear stress and vortices size and prepares the conditions for in-stent restenosis development. Considering this fact, in this paper, the effect of some geometrical parameters such as the shape and the size of the stent strut on the wall shear stress distribution and vortices size is investigated. Furthermore, employment of a stent with partial flexible strut is suggested to decrease the restenosis risk, and the effect of the flexible part stiffness is explored. For this purpose, the interaction between the blood flow and the flexible part is simulated by arbitrary Lagrangian-Eulerian approach in the framework of the finite element method. The results indicate that in stents with circular strut, the partial flexibility of the cross-section can be effective in reducing the restenosis risk by lowering the maximum value of the wall shear stress and considerably decreasing the vortices size. On the other hand, in stents with rectangular struts, it not only does not decrease the shear stress maximum value but also significantly increases the vortices size and may lead to increase of the restenosis risk.

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Abstract melting of Cyclohexane-Cu nano-material in a porous square cavity is studied numerically in this paper. At first initial temperature of the cavity is Ti that is equal to melting temperature of nano-material,Tm ,. The horizontal walls are adiabatic. Suddenly the left wall's temperature has changed to Th>Tm . The effective parameters in this case are and which appear in the nondimensionalized equations. Nondimensionalized governing equations are obtained based on the Darcy model; a control volume approach is used for solving these equations. The effect of the variation of mentioned parameters are investigated on the heat transfer rate, fluid flow, isotherms and melting time of nano-PCM. The results show that changing of any parameters will be effective on increase or decrease of heat transfer rate and melting process time. For example variation of has high effect on melt fraction in cavity with time. The results show that melting of PCM is prolonged when nano-particles are added. the increases of the Ra increases the natural convection heat transfer and therefore increases the melting rate, and deforms the melting line.

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In this study, the hydrostatic vibration analysis of an isotropic rectangular microplate in partial contact with a bounded fluid is studied. Modified couple stress theory based on the Kirchhoff plate assumptions are used to mathematically model the problem. The extended Hamilton’s principle is employed to drive the governing differential equation of motion and the corresponding boundary conditions. The transverse displacement of the microplate is approximated by a set of admissible functions which must satisfy the geometric boundary conditions. The fluid is assumed to be incompressible, inviscid and irrotational and the fluid velocity potential is obtained using the boundary and compatibility conditions. Natural frequencies of the microplate are calculated using the Rayleigh-Ritz method. To validate the present results, the natural frequencies of an isotropic macroplate in contact with fluid are compared with the available data in the literature and very good agreements are observed. Finally using the numerical data, the effect of different parameters such as thickness to length scale parameter, aspect ratio, length to thickness ratio and boundary conditions on the natural frequencies of the microplate are discussed in detail. We have observed that the difference between the natural frequencies predicted using the classical theory and the one evaluated by the modified couple stress theory is significant when thickness of the microplate is small, but diminishes as thickness increases.

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An artificial neural network (ANN) approach was used to model the wheat production. From an extensive data collection involving 40 farms in Canterbury, New Zealand, the average wheat production was estimated at 9.9 t ha^-1. The final ANN model developed was capable of predicting wheat production under different conditions and farming systems using direct and indirect technical factors. After examining more than 140 different factors, 6 factors were selected as influential input into the model. The final ANN model can predict wheat production based on farm conditions (wheat area and irrigation frequency), machinery condition (tractor hp ha^-1 and number of passes of sprayer) and farm inputs (N and fungicides consumption) in Canterbury with an error margin of ±9% (±0.89 t ha^-1).

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Construction of buildings and structures causes to compact of soil particles and soil settlement. Hence, determination and prediction of soil settlement in the stability of structures, resulting from the applied loads, is necessary before construction. As a result of consolidation test that is relatively time-consuming and costly testing, compression index (Cc) is used to get the amount of settlement. In fact, soil settlement can cause extensive damage to a project in some cases. In order To prevent these damages, correct prediction can be useful for safe designing of structures. Cc may be as a function of various parameters such as initial void ratio of soil, moisture of liquid limit, moisture of plastic limit, plasticity index, relative density, and so on. By considering the longtime of consolidation test, researchers have tried to find relationship between these parameters and Cc from the past until now. For this reason they tried to connect Cc to other physical measurable properties of the soil.

In the past, some researchers have indirectly tried to measure these parameters. In this regard, several empirical single-parameter approaches are proposed to estimate Cc. Due to non-linear relationship between Cc and relevant parameters, Adaptive Neuro-Fuzzy Inference System (ANFIS) has found as an application to solve such non-linear problems and cases where an accurate understanding of the problem is required. ANFIS is a multilayer feed forward networks that is combination of Fuzzy Inference System (FIS) and Neural Network (NN). NN has ability to learn the input and output data and FIS is also capable for map the input space to the output space. ANFIS is a powerful tool to solve complex and nonlinear problems using the two mentioned features and also language power of FIS and numerical power of adaptive nervous system.

In this paper, Compression index (Cc) is modeled by ANFIS. Two ANFIS model were created by subtractive clustering (SC) and Fuzzy c-means clustering (FCM), respectively, and then trained. By data clustering, collection of training data is divided into a number of fuzzy clusters and each cluster representing the system behavior. The data were collected from the Soil Mechanics Laboratory of Mashhad city. ANFIS input parameters are taken according to the same parameters that commonly chosen in most of empirical models for determining Cc that easily determined in the laboratory. These input parameters include initial void ratio (e0), liquid limit (LL) and plastic limit (PL).
The number of required iterations for training (Epochs) in two ANFIS model, neighborhood radius (ra) in SC and number of clusters (NC) in FCM are optimized using trial and error method. After the end of solving and optimization of ANFIS models, the SC-FIS model was found in ra = 0.25 and NC =18 and the FCM-FIS model was obtained in NC = 20 with highest accuracy for prediction. Results showed both ANFIS model have a high capacity and appropriate forecasting for Cc prediction with chosen inputs parameters. Compared to the SC-FIS model, FCM-FIS is conducted prediction with higher accuracy. Using presented ANFIS models, can be predict the Cc of soils whose characteristics are within the specifications soils that used in this modeling with high accuracy and do not need to conduct consolidation tests that are very time consuming and costly.