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Volume 8, Issue 33 (6-2020)
Abstract

Abstract:
Metamorphosis is one of the key issues in myth and mythological stories in which a creature physically changes and temporally or permanently losses its formal shape, as well as its recognized and natural formation to reach perfection or suffer a deficiency; thus, gaining a new shape. Metamorphosis sometimes constructs a part of the creature, becomes eternal, young or vulnerable, or finds a synthetic structure comprised of the human and animal features, and lives contrary to its basic nature. In this study, with regards to the significance of the issue under consideration and the status of culture and folk literature, different types of metamorphosis in the popular culture and literature of the Bakhtiary and Kohkiloye-and-Boyer-Ahmad people are investigated. Going through various kinds of human metamorphosis to an animal, a tree, a bird, heavenly bodies, and vice versa, we shall be concerned with analyzing their literary representations and mythological aspects of different types of metamorphosis among the Bakhtiaries and Kohkiloye-and-Boyer-Ahmad people. This study is conducted fundamentally based on the library and field study using qualitative content analysis. Upon investigating various sources and analyzing literary and mythological representations of different kinds of metamorphosis, it may be indicated that the most important types of metamorphosis in the cultural and belief system of these people subsume the metamorphosis of human to animals such as bear, wolf, tiger, and turtle. As a result of committing sinful actions, humans are metamorphosized into a tree.
Keywords: The popular culture; the Bakhtiari tribe; Kohkiloye-and-Boyer-Ahmad; mythological themes; metamorphosis.
‌‌‌‌‌‌‌Research Background
Reviewing authenticated academic journals and websites as well as library resources, we found no reliable scholarly work on metamorphosis in the folk culture of Bakhtiari and Kohgiluyeh and Boyer-Ahmad people. On this basis, the present study is one of the first, if not the first, attempt that takes into account this critical issue. 
Aims, questions, assumptions
In this study, we shall examine the manifestations of different types of metamorphosis in folk culture and anecdotes of Bakhtiari and Kohgiluyeh and Boyer-Ahmad people. On this account, the major objectives of this research includes investigating and analyzing various types of metamorphosis from human being to animal, plant, bird and vice versa. Moreover, their representation in culture, belief, and folk literature such as local poems, proverbs, and the anecdotes of Bakhtiari and Kohgiluyeh and Boyer-Ahmad people are investigated. The significance of this study lies in the fact that examining the representation of metamorphosis may throw light on the rituals, beliefs, values, and regulations of those who have devised such myths and stories.
Results and discussion
According to the library-based findings, the most important types of metamorphosis in the culture and beliefs of the Bakhtiari and Kohgiluyeh and Boyer-Ahmad people can be categorized as follows:
One of the salient stories represent the metamorphosis of a human being to a turtle in the culture and beliefs of the Bakhtiari and Kohgiluyeh and Boyer-Ahmad people. In this narrative, God metamorphosed a woman into a turtle because she disobeyed Him. Putting a pan one her back and a baking pan beneath her stomach, God metamorphosed her into a turtle.
A pork is also a metamorphosed human being. The story is that "he refuses to pay attention to the guest and the man asks God to change him into a ferocious animal. Then, God metamorphosed him to a pork". The story of the bear is also the same. Moreover, tiger and rabbit were also of those human beings who were metamorphosed for their committing sinful actions. 
Of the most important instances of human to animal changes is the metamorphosis of a fairy into a human who defrauds other humans at the gardens, streams, and ponds at night.
Besides animals, birds are also metamorphosed in the culture and beliefs of the Bakhtiari and Kohgiluyeh and Boyer-Ahmad people. Cuckoo amongst the Bakhtiaris, or Gapi-Gapu amongst the Kohgiluyeh and Boyer-Ahmad people are two examples of birds that were firstly human and then were metamorphosed into birds because they beg God in order to have relief in the life. Also, birds such as Jaze, Titek, and Gow-Gow are some other metamorphosed animals.
So far as the metamorphosis of the celestial bodies is concerned, there are stories about the moon and the sun amongst the Bakhtiaris and the Kohgiluyeh and Boyer-Ahmad people. The moon was a boy and the sun was a girl who were metamorphosed for their sinful deeds.
The most important instances of the metamorphosis of a human into a tree amongst the Bakhtiari and the Kohgiluyeh and Boyer-Ahmad people are a plant called Chevil and Kardah (growing from human's bloodshed), human's brain to an oak tree for committing robbery, Gesha Khashkha for drinking wine. The most important instance of metamorphosis of a tree into a human or an angle can be seen in the story about the metamorphosis of the Hawthorn tree to a pretty woman.
Conclusion
In relation to the folk culture and stories of the Bahtiari the Kohgiluyeh and Boyer-Ahmad people, this study aim to investigate the metamorphosis of human to animal, tree, celestial bodies, birds and vice versa. These stories help us figure out the values, beliefs and obligations embedded in these anecdotes. Most of these anecdotes are related to the metamorphosis of a human to an animal, a bird, and celestial bodies. This happens as a consequence of committing a sinful action that masks a man with the heinous features of an animal, some examples of which are: behaving badly with others (pork and bear), cannibalism (tiger), being ungrateful to God (turtle), betrayal (rabbit), drinking wine (Khashkhash), fratricide (Gogu), naughtiness (Jaze and Titek), helping someone for robbery (Kaji-pati) and robbery (oak tree). Through metamorphosis, many of human beings are changed into animal, bird, tree and celestial bodies. In these stories, the people are indirectly given heinous characteristics so as to emphasize the educational and ethical aspects of the narrative.   
Abolfazl Masomi, Siavash Ail Babaei,
Volume 15, Issue 5 (7-2015)
Abstract

Cold spin bonding is a new invented method for producing layered composite tubes based on flow-forming process. Bonding strength in this process is dependent to parameters such as initial thickness, rate of deformation, bonding temperature, initial strength, heat treatment temperature, duration of heat treatment and also production parameters like feed rate and spindle RPM. In the present work, effect of rate on thickness reduction, heat treatment temperature and duration of heat treatment on bonding strength of steel and aluminum have been studied. The strength of bonding which produced by cold spin bonding has been measured by peel test and structure investigation has been done by scanning electron microscopy. Among the parameters, heat treatment temperature and after that thickness reduction rate have the most effects on bonding strength and heat treatment duration has less effect in comparison. The results show that the increase of heat treatment temperature up to a certain level increase bonding strength, but above that level the strength will decrease. . This study also has shown that the best condition occur in %50 thickness reduction, heat treatment temperature of 475 degree and 120 minutes of heat treatment in which bonding strength reaches to yield strength of base metal.
Mohammad Razani, Abolfazl Masomi, Masoud Razaeizadeh, Mohammad Noparast,
Volume 16, Issue 7 (9-2016)
Abstract

Today, in the most of mining projects, especially in high volume mining using SAG and AG due to the special features respect to the other conventional methods has been developed. Usually in comminution process a small percentage of energy consumed by grinding and crushing processes. Also, the comminution process depended on many parameters such as: ore hardness, charge volume, size and geometry of ore, charge and size of ball, percentage of critical velocity of mill and liner profile. Therefore, achieving to optimum mentioned factors and consumed energy is of particular importance. Since it is impossible to consider interaction of all effective parameters simultaneously by experimental methods and are expensive and time consuming, in this research the effect of liner profile on comminution process has been investigated by changing the height and angle of liners using numerical method. In recent work the results of scaled experimental mill has been used for validation of numerical method. The results show a liner with a height of 140 mm and an angle of 15 degrees has the maximum impact and comminution. The results from FEM model of the SAG mill at Sarcheshmeh Copper Complex, are in good agreement with the measured data from experimental SAG mill.

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