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Selecting crown prince has always been an ambiguous enigma in the Sassanid era. Crown prince nomination had been a matter of debates and sometimes quarrels amongst the royal family, the Magi, and the powerful feudals. According to the primogeniture law, in the Sassanid dynasty, crown prince was a position dedicated to the eldest son. However, documents indicate that sometimes the King himself decided to choose a younger son as his successor. One of the most challenging examples of such exceptional cases is the long-lasting quarrel between Narseh and Bahrams (Bahram I, II, and III) for grasping throne, which lasted for three decades. Naresh (youngest son of Shapur I) clearly violated the Primogeniture law and claimed throne over his older brother (Bahram I) and his successors for more than three decades. This research is trying to answer some key questions in this matter: why did Prince Narseh violate the Primogeniture law and claim the power for about three decades? What were his justifications in pursuing the power? Why did he insist on his solicitation? Here we represent another crucial element in selecting crown prince in the Sassanid dynasty, which is called “blood purity”. This law indicates that princes with double - sided pure blood (paternal and maternal) might have been preferred to the elder ones. This research is based on comparative analysis of historical documents, ethnographic studies, and archaeological data via psyco-anthropological view. It seems that in the Sassanid era, the law of “Royal Biternality” or “Royal Bilateral Descent” was superior to the law of “Primogeniture”.

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Aspergillus flavus is a saprophytic fungus contaminating different food and nut products by aflatoxin which is a major problem worldwide. Modified atmosphere packaging (MAP) could be an effective method for control of saprophytic fungi and their toxins and secondary metabolites production. This study gives the consequences of fungal isolates growing under MAP condition on potato dextrose agar (PDA). Two isolates of A. flavus (A42 and CHAO50) were packed under 100% CO₂, 100% O₂ and vacuum conditions. The mycelial growth of fungal isolates on PDA was controlled up to 80% with CO₂ treatment. Under the vacuum condition, mycelial growth of the isolates was inhibited up to 30%, while 100% oxygen had no inhibition on mycelial growth. Examination of isolates A42 and CHAO50 under UV light showed that both isolates produced yellow pigments on aflatoxin producing ability (APA) medium after 10 days. The levels of aflatoxin B₁, B₂, G₁, G₂ and total aflatoxin were analyzed chromatographically. The results revealed that the highest concentration of total aflatoxin was produced by fungal isolates grown in an atmosphere of 100% O₂, while the level of aflatoxins was significantly reduced in 100% CO₂. 

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Anthracnose disease caused by Ophiognomonia leptostyla, is the most important and widespread fungal disease on Juglans regia. Walnut disease symptomatic samples were collected from different provinces of Iran, during 2015–2016. Fungal isolates were identified based on ITS-rDNA sequence data. Variance analysis of colony growth rate (mm/day) and acervulus density on medium, was significant. Acervulus density on medium was strongly correlated with colony growth rate. The Max acervulus density was 60% and > 80% for Hamedan and Mazandaran isolates respectively. The virulence of six selected isolates was examined on cv. Chandler. Virulence indices including spot diameter, disease severity, spot area average and logistic infection rate except spot number index, could successfully detect significant differences among isolates. SA-SE1 isolate from Mazandaran showed significantly the most virulence indices: disease severity (%), spot area and logistic infection rate. For the other five isolates, four significant levels in all virulence indices were observed. In summary after this isolate, other isolates including TA-ZY21, LA-SY21, U94-SR1, HA-GH22 and MA-K1 were placed in the next steps of virulence ranking. There was insignificant correlation between colony growth rate and disease severity. However, the acervulus density and disease severity were significantly correlated implying the importance of acervular conidial inoculum in secondary disease cycle progress. Disease severity was strongly correlated with number of spots, spot diameter and logistic infection rate. Disease severity was also negatively correlated with Mid-time (time to progress 50%). Moreover, there was positive relationship between logistic infection rate and three traits: number of spots, spot diameter and spot area average. This study was the first of the disease virulence components on cv. Chandler in Iran.
 

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Purpose: Due to the emergence of the lean approach concept in human resources, this research was conducted with aim of analyzing the issue of lean human resource supply chain.
Methodology: Relying on philosophical foundations of pragmatism school, this research is a qualitative study based on grounded theory. The statistical population of the study consisted of senior managers, middle managers and experts of the Ministry of Cooperation, Labor and Social Welfare and academic experts. 19 individuals were selected by purposeful sampling as statistical sample members. Lean human resource supply chain model identifications were collected using semi-structured interviews and analyzed using Strauss and Corbin's three-step coding method (252 key concepts, 43 subcategories, and 25 main categories).
Findings: Based on the findings of the study, lean human resource supply was selected as the pivotal phenomenon. Causal conditions were categorized into two categories of environmental and organizational factors, and the five main categories of preventive demand management planning, efficiency of search resources, efficiency of evaluation and screening, recruitment preparation and succession system efficiency. Selected strategy title, personal characteristics of managers, evaluating the effectiveness of absorbed human resources, the employability of the candidate as a reinforcement intervener and illegal relationships, environmental uncertainty, time pressure for employment, and the inefficiencies of the public management system were identified as mitigating interventions. Organizational culture, strategic role of HR unit, managers' flexibility and adaptability, management stability, career management and accessibility, and the organization's resource constraints were identified as lean human resource supply chain strategies. Finally, the implications of the lean human resource supply chain were divided into three levels: micro, middle and macro.

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Aims: The success of COVID-19 vaccination depends on public acceptance of the vaccine. It is necessary to evaluate the factors affecting vaccine acceptance to increase the acceptance of vaccination. The current study aimed to determine the relationships between the three components of the COM-B (capability, motivation, and opportunity) model and the explanatory domains of each component.
Instrument & Methods: In this cross-sectional study, 1102 adults aged 18 years and older were selected through multi-stage sampling and received an online questionnaire on the WhatsApp platform in February 2021. Structure equation modeling was used to investigate the factors affecting vaccine acceptance.
Findings: Of the 1102 respondents, 938 respondents (85.1%) wanted to get vaccinated. The main indicators for the COM-B components were "behavioral regulation"(capability), "subjective norms and social support" (opportunity) and "social role" (motivation). Opportunity strongly predicted motivation (93%) and Covid-19 vaccine acceptance (74%). Motivation and capability were mediator for opportunity on vaccine acceptance.
Conclusion: Providing environmental and interpersonal conditions by creating capability and motivation in people increases vaccine acceptance.
 

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Bacteria are used directly by zooplankton as a food source. The purpose of this study is to use straw as a substrate for the proliferation of bacteria in geomembrane pools and its effects on the production and biochemical compositions of Artemia. One week before Artemia culture, the pools inoculated with Dunaliella sp. and straw (particles less than 200 microns) as follows: treatment 1= geomembrane pool containing Dunaliella sp. (one week of algae cultivation), treatment 2 = geomembrane pool containing Dunaliella sp. and 0.5 grams per liter of straw (one-week algae cultivation and adding straw from the second week), treatment 3 = geomembrane pool containing Dunaliella sp. and 0.5 g/l of straw (algae cultivation and adding straw from the first week) and treatment 4= geomembrane pool containing 0.5 g/l of straw (adding straw from the first week). Artemia was cultured for 18 days and fed based on a turbidity depth of 15 cm. The highest growth rate was observed at the end of day 18 in treatment 3 (P<0.05). The highest amount of protein was obtained in treatment 1 (P<0.05). The highest amount of biomass was observed in the control and T3 groups (P<0.05). The presence of straw in Artemia pools decreased EPA fatty acid by 5-7 times less than the control (P<0.05). Artemia can grow while feeding on environmental bacteria. Applying straw in Artemia cultivation can lead to an increase in PUFA fatty acids with 18 carbon chains.

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Chrysanthemum (Dendranthema grandiflorum (Ramat.) Kitamura cv. Pattriot) is one of the most important and marketable cut flowers in the world. However, a relatively limited vase life reduces its marketability. The aim of this study was to evaluate the efficacy of salicylic acid (SA) and citric acid (CA) in extending the vase life of chrysanthemum flowers. Therefore, a factorial experiment based on completely randomized design with SA at (0, 100, 200, 300 ppm) and CA at (0, 100, 200 ppm) with 3 replicates and 3 samples (individual flowers) for each replicate, was conducted. Applying SA and CA increased vase life, petal water content (%), initial fresh weight (%) and marketability, significantly. SA treatments increased leaf relative water content (RWC), petal water content (%) and initial fresh weight (%) by 49, 73 and 23 %, compared to the controls, respectively. The highest vase life (21.77 days) was observed for the treatments of SA (300 ppm). The significant increase (300%) in vase life is considered to be due to plant regulating and anti-stress properties of SA and CA. According to the results of this experiment, SA and CA as natural, cheap, safe and biodegradable compounds are suitable alternatives for conventional chemical treatments in order to prolong vase life of cut flowers of chrysanthemum. Commercialization of these compounds for optimum formulations needs further experiments.

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Incremental Sheet Metal Forming (ISMF) is based on localized plastic deformation. In this process, a hemispherical-head tool, controlled by a CNC milling machine, shapes a sheet metal according to a defined path. Study of the forming force is one of the most important topics in this process. Increasing of vertical step size, tool diameter, wall angle and sheet thickness together with using of high strength sheet metals and lightweight alloys, leads to an increase in the forming force. In this paper, the performance of a novel forming process, named Ultrasonic Vibration assisted Incremental Sheet Metal Forming (UVaISMF) has been investigated. The procedure of design, manufacture and test of vibratory forming tool, is presented. The occurrence of longitudinal mode and resonance phenomenon has been confirmed by the results of modal analysis and experimental test. Furthermore, the effect of ultrasonic vibration on the vertical component of forming force and spring-back has been studied. Aluminium sheet of grade Al 1050-O is used as a work material. Experimental results obtained from straight groove test, indicate that ultrasonic excitation of forming tool, will reduce the average of vertical component of forming force and spring-back in comparison to conventional process.

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Hydraulic engine mounts are widely used in aerospace and automotive applications for vibration isolation. Here in this paper an active engine mounting system is proposed which not only acts like an isolator in a wide range of frequencies, but also performs as a damper when shock inputs and engine resonances are present. The proposed new design consists of a conventional passive fluid mount, an electromagnetic actuator (voice coil) and a capacitive circuit. The voice coil is placed in the lower chamber of the passive fluid mount and it can change the volumetric stiffness of the bottom chamber actively such that the mount has low dynamic stiffness in a wide range of frequencies. The capacitive circuit is paralleled with the voice coil and in situations when large shock inputs are present; it adds capacitance to the electromagnetic circuit and changes the characteristics of the mount from an isolator to a damper. Here in this paper the physical and mathematical models of the new mounting system are presented, the simulation results are shown and the performances of the proposed design in all active, passive and damper conditions are demonstrated.

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In the present paper, vibration signals recorded during a turning process are used for tool wear estimation. During the cutting process, tool acceleration signals are recorded with the use of an accelerometer installed on tool holder, for different wear values. Since the measured acceleration signals have time dependent variance and are non-stationary, time series with time dependent coefficients were used for modelling them and extraction of wear sensitive features. The extracted wear sensitive features are residual variance of different signals and are used as distance between the signals associated with worn tools and the baseline model. Based on analysis of distance between worn tools’ acceleration signals in different cutting directions and the baseline signal, a correlation was found. By the use of this correlation, a criterion was obtained for detection of critical wear stage. Such that the distance curves for feed and main cutting directions possess a minimum in the vicinity of critical wear level. Investigation of results revealed that the curves obtained through this method are more accurate than the ones obtained from stationary modelling method. The results obtained here can be used in online real-time algorithms of tool wear estimation.

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In the present study, thermal buckling analysis of functionally graded carbon nanotube reinforced composite (FG-CNTRC) conical shells is presented. The effective material properties of FG-CNTRCs are determined using the extended rule of mixture. By employing the Hamilton’s principle and based on first-order shear deformation theory and Donnell strain-displacement relations, the governing equations are obtaind. The membrane solution of linear equilibrium equations is considered to obtain the pre-buckling force resultants. Using the generalized differential quadrature method in axial direction and periodic differential operators in circumferential direction, the stability equations are discretized and the critical buckling temperature difference of shell is obtained. The accuracy of the present work are first validated by the results given in the literature and then the impacts of involved parameters such as volume fractions and types of distributions of carbon nanotubes, boundary conditions and geometrical parameters on thermal buckling of functionally graded nanocomposite conical shell are investigated. The results indicate that the values of volume fractions and types of distributions of carbon nanotubes along the thickness direction play an important role on thermal instability of FG-CNTRC conical shells.

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The attempts of researchers in industries to obtain accurate and high quality surfaces led to the invention of new methods of finishing. Magnetic abrasive finishing (MAF) is a relatively new type of finishing in which the magnetic field is used to control the abrasive tools. Applications such as the surface of molds are ones of the parts which require very high surface smoothness. Usually this type of parts has freeform. In this study, the effect of magnetic abrasive process parameters on freeform surfaces of parts made of aluminum is examined. This method is obtained through combination of magnetic abrasive process and Control Numerical Computer (CNC). The use of simple hemisphere for installation on the flat area of the magnets as well as magnets’ spark in curve form is a measure done during testing the experiments. The design of experiments is based on response surface methodology. The gap, the rotational speed of the spindle and the feed rate are found influential and regression equations governing the process are also determined. The impact of intensity of the magnetic field is obtained using the finite element software of Maxwell. Results show that in concave areas of the surface, generally speaking, the surface roughness decreases to 0.2 µm from its original 1.3 µm roughness. However, in some points the lowest surface roughness of 0.08 µm was measured

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There has been more than four decades since Frank Hole and Kent Flannery conducted a field expedition in central Zagros Mountains located in western Iran, in 1963. From then onward, numerous discoveries and field projects have been done in this region. Some of these findings may contradict the report of the original survey. Although the goal of this article by no means, is to criticize the 1967 report, it sounds unavoidable to incorporate the new discoveries in it. For instance, the author of this article believes that the twelve missing sites in the 1963 survey were found later, hence; new discoveries in case of the presence of Levallois technique in the Zagros Mountains could change our understanding regarding the Middle Paleolithic of Zagros.

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Football is an industry that Branding and its foundation, brand identity, it has extremely important in. so that researchers have proposed specific brand models in countries with football. In this research, using descriptive analytic methods and with the purpose of application, data was collected in two qualitative and quantitative phases. The statistical population consists of 10 professionals and experts in related to research and Spectators of six teams in the Premier League that would be present in the stadium. Sample size was 300 cases in Phase I and 720 in Phase II. which using simple random sampling method and equally, the fans selected. Accordingly, researchers found need of new theoretical insights based on brand identity(Koo(2009), Schilhaneck(2008), Zucchermaglio(2011), Silveira(2011)&Richelieu(2010), and considering the brand identity models, in few countries with football brand (Germany, Spain, France and S.Korea), and with the use of experts and fans perspectives, the brand identity model of teams in the league in season 92/91 offer and Finally using CFA and SEM model provided a new perspective on the dimensions of the country football brand identity, that are on the basis of factor loading as following: Success(./97), Delivery(/.92), Native Region(/.89), Star Player(/.88), Logo, Fans, History, Traditional Rival(./87), Tradition(./85), Team performance (./82), Stadium(./72) and Non -Player personnel (./51).

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Although the Iranian plateau has witnessed Paleolithic researches since the early twenty century, still little is known about the Paleolithic of Iran. There are several reasons for this situation and lack of scholarly enthusiasm on the part of Iranian archaeologists seems to be the most imperative one. Concerning the history of Paleolithic surveys and excavations conducted in Iran, three distinct phases are recognizable. First, from the beginning of the twenty century to the 1980 when numerous field missions were executed in this region all by western institutes, second phase observes a twenty years gap in the Paleolithic studies hence; only few surveys could be performed in this period, and the third phase starts with the reopening of the Iranian fields to the non-Iranian researchers, which led to the survey and excavation of handful of new Paleolithic sites. This article reviews Paleolithic researches conducted in Iran since the beginning of twenty century to the present time.

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The first season of survey at Qeshm, carried out during the winter of 2006, resulted in the identification of nine sites from the Parthian and Sasanian periods. The surface pottery from these sites suggests their trade and cultural relations with contemporary sites in the southern Persian Gulf and other areas. For instance, the Parthian and Sasanian glazed types in Qeshm Island are closely related materials found from Khuzestan as well as northern and southern coasts of the Persian Gulf, including ed-Dur, Suhar, Kush, Failaka and Qalat Bahrain. Parthian painted ware reveals close similarities to monochrome and bichrome painted pottery of southeastern Iran, Oman coasts and the southern Persian Gulf, specifically ed-Dur, Suhar, Kush and Tel-i-Abrak. The so-called Indian Red Polished Ware is the other diagnostic type widespread in the northern and southern coasts of the Persian Gulf from the middle Parthian up to the early Islamic period. The material was being widely produced in the Indian region (Gujarat) and Indus, and exported to different places around the Persian Gulf. The Coarse Black Ware (ceramic noir epaise) with decorative raised bands recorded in Qeshm compares with coarse-black material from the southern Persian Gulf, also occurring at sites such as ed-Dur and Abu Dhabi Islands. Plain, common Parthian and Sasanian pottery from Qeshm shows parallels with known materials of this period in the northern and southern Persian Gulf.