---

Reactive Powder Concrete (RPC) is recognized as one of the most innovative types of concrete, notable for its exceptional strength and durability. This type of concrete is composed of essential components such as cement, silica fume, quartz powder, silica sand, superplasticizer, and water. Due to its superior mechanical properties, RPC is widely utilized in specialized projects and structures that require outstanding strength and durability. However, the high cost of its components, particularly quartz powder, significantly increases the overall production cost, limiting its widespread application in larger, cost-sensitive projects. Quartz powder is scarce in the Azerbaijan region of Iran and is often sourced from mines in Hamedan and Isfahan. By replacing it with more locally available, affordable materials, final production costs can be reduced. To address this issue and optimize the use of available resources, the possibility of substituting quartz powder with local, cheaper, and more accessible materials has been explored. Micronized quartz powder is crystalline, though some of its finer particles have a minor pozzolanic effect. In contrast, diatomite powder, which contains both amorphous and crystalline particles with a high percentage of amorphous silica, exhibits significantly greater pozzolanic activity. These enhanced reactions contribute to the formation of a denser and stronger concrete matrix, improving its mechanical properties. The purpose of this study was to investigate the feasibility of replacing quartz powder with diatomite powder in different proportions—specifically 25%, 50%, 75%, and 100%. The goal was to evaluate how this substitution affects the concrete's strength while also reducing overall production costs. In this research, concrete samples were tested at various curing ages, including 7, 14, and 28 days. Mechanical tests such as compressive strength and tensile strength were conducted to assess the effects of the substitution on the concrete's performance. Additionally, parameters such as standard water absorption, water absorption during curing, density, and consistency were measured. To simulate real-world construction conditions and avoid the use of specialized equipment, the samples were cured in a water tank at 25°C. This curing method not only eliminated the need for expensive equipment like autoclaves but also made the concrete more applicable to typical site conditions, further lowering production costs. The test results were promising. The strength of the modified concrete mixtures improved significantly when diatomite powder replaced quartz powder. In samples where 100% of the quartz powder was substituted with diatomite, the compressive strength increased from 543 MPa to 806 MPa (approximately 49%), and the tensile strength increased from 543 MPa to 806 MPa (approximately 18%) at 28 days. In addition to the improvements in mechanical properties, the use of diatomite powder offers significant economic advantages. Diatomite is abundantly available in various regions, and its accessibility reduces both production and transportation costs. As a result, the overall production cost of the concrete is significantly lowered, which is especially beneficial for large-scale construction projects where cost efficiency is critical. In conclusion, replacing quartz powder with diatomite powder is a practical solution that brings both technical and economic benefits. The enhanced strength of the concrete, coupled with reduced production costs and the efficient utilization of local resources, makes this approach a practical and effective method for producing high-performance concrete.

---

Rostam and Koraoglo as two nationl and epic champions that their fate are linked with the fate of their nations, are symbols of  the wrangle of forces; Good and Evil, Light and Darkness, and Honesty and Dishonesty. The spirit of impassion, mythological aspects, courage, dedication, love, revenge and splendor are conjoint specifications of the two champions. This article answers the following questions:
1- What are the conjoint specifications of the two champions that affect on the authorship of the story?
2- What are the mythical elements that changed these champions into myth?
3- What are the conjoint specifications of women in these stories?
4- What are the important amorous elements in these stories?

---

Ferdowsi's Shahnameh has always been interest of readers, and many authors have tried to imitate it. Like other Iranian orators, the Kurd poets have recreated different stories of Shahnameh with innovations and sometimes translations. No doubt, the introduction and thinking of the epic verses after Shahnameh can expose some of the important issues of this valuable work and be effective on the morale of unity and patriotism among Iranian ethnic groups; therefore, in this study, we first introduced the verse of "Kordish Shahmghal and Rostam" and then compared it with the narration of " Shahnameh's Rostam and Shaghad", Salby's historical narratives, Toomar Naghali Shahnameh, Haft Lashkar, and Ferdowsinameh.

---

This article tries to identify the common stability themes and factors in the poems of Shamlu and Darvish. For doing so, the poems of these poets were investigated in descriptive and analytical way. Comparative study of Shamlu and Darvish poems in the scope of stability poetry and explaining the common elements and analysis of the stability themes from content and linguistic perspective will be effective in analysis of the stability poetry in the world literature. In addition, this analysis helps us to identify these poets’ ideology and thoughts in detail. Therefore, the common elements of stability poetry in the world literature are recognized by broad research on the resistance literature of the nations. The poems of Mahmud Darvish and Ahmad Shamlu contain numerous common themes on resistance literature such as patriotism, confronting oppression and liberty and etc. The conditions of both poets have influenced their poetry and both of them have expressed their ideals ideologically because of tyranny and suffocation.

---

The Evanioidea wasp fauna of Iran is reviewed. The study is based on literature as well as collecting research carried out during 2007-2015 in the East and West-Azarbaijan provinces. The total number of species recorded from Iran is 34 including: Aulacidae (Pristaulacus, 4 species), Evaniidae (Evania, 2 species and Brachygaster, one species) and Gasteruptiidae (Gasteruption, 27 species). Four new records from Iran are added: Brachygaster minutus (Olivier) (Evaniidae); Gasteruption goberti (Tournier), G. henseni van Achterberg and G. undulatum (AbeilledePerrin) (Gasteruptiidae).

---

A reminder of memory for all humans is a common feeling, but in art and literature, and especially in the eyes of poets, it has a different appearance. Reminder of memories is one of the important resources for poets and artists in the literary and artistic structure of their works. Hannin, or the love and affection that the poet has in relation to his past, is associated with remembrance of memories and the poet places it on the basis of his poetry. The eloquence of the poet is his first stimulus to remind his memories and Hannin to his homeland, which leads to the formation of an architectural and artistic form of Ghasideh. Sheikh al-Wa'ili wrote the verse " towards Najaf Ashraf; My Beloved Land " after the departure of Najaf Ashraf; the land of his childhood and adolescence. In his Ghasideh, he tells his love and affection to his land and describes it in the most beautiful form. From the depths of the poet's feelings, one can understand the depth of this love and interest in the homeland. On the other hand, Shahriar, the famous Iranian poet, sings “Heidar Baba" in Turkish after the abandonment and divorce from his motherland, in which he recalled the memories of his childhood and adolescence and the regret of the time spent in the village on the slopes of Mountains of Heidar Baba. The present study uses a descriptive-analytical method to study and adapt these two stories through two poets' songs relying on the American Comparative Literature School.  It addresses three levels of timing, spatial and social remembrance, pointing out the similarities and differences in their poetry, as well as the distinctive features of their artistic images used to express their memories and poetic experiences which have been mentioned. From the research results, it can be said that natural elements (nature) have an active role in shaping the structure of poetry memories. And their poetry and musical images have served their thoughts, and these functional aesthetic images have been addressed to the audience and have led to a better understanding of the audience in the process of reading the text.

---

The use of enzymes in organic solvents has biotechnological and industrial importance. Organic solvents can decrease the stability of enzymes that is a challenge for the use of enzymes in organic media. There are several approaches such as protein engineering, chemical modification, and use of additives for stabilization of enzymes in organic solvents. In this study, activity and stability of trypsin were investigated in the presence of different organic solvents. Then the effect of sucrose on the stability of the enzyme was investigated in the absence and prescence of solvents. The result showed that the activity and stability of trypsin were decreased in the presence of organic solvents. DMF had a lowest effect on the activity and stability of the enzyme. The use of sucrose increased the stability of trypsin in the presence of organic solvents. The stabilization effect of sucrose in the presence of DMF was more than other solvents. Consequently, a mixture of DMF and sucrose is proposed for the use of trypsin in industrial applications.

---

Translation assessment involves investigating the extent of accuracy or inaccuracy in translation of textual units and levels as well as examining their positive and negative points. As one of the most basic, effective units of translation, words are capable of incorporating various semantic levels; consequently, finding their precise equivalent is of substantial importance. Translators are always faced with a set of challenges because the translation of a word must be adequate and aligned with the context of the text. And sometimes, the semantic load of a word is untranslatable. In order to eliminate or mitigate the percentage of such challenges in translation, different methods can be employed. Ladmiral (1994) laid out a set of components in this regard which guides the translator on how to transfer lexical concepts, so that a relative equivalence can be achieved between the source and target text through selecting words as equivalents. As a religious-literary text, Nahj al-Balagha contains different layers of meaning at lexical level. The present study seeks to investigate different methods for interacting with the words within Nahj al-Balagha in translation using Ladmiral’s theory (1994) as well as to examine the performance of Ali Shirvani (2005) in his translation of the words of this book. The findings of the study show that considering Ladmiral’s components (1994), the translator’s approach in certain parts of translation has been target-oriented, while in other parts, it has been source-oriented. Furthermore, despite his faithfulness toward source language words, the translator has been focused on transferring the message and meaning of the text and in some cases, he has been satisfied with translating certain references and contents which has resulted in his translation to be devoid of difficulty and ambiguity in understanding the purpose of the text.

---

Over time, the words change meaning. According to linguistic studies, the most important types of this semantic change are: semantic generalization, semantic appropriation, metaphor and semantic degradation or promotion. This rule also applies to the vocabulary of Arabic; and some of the terms used in the Quran have undergone a semantic transformation. Unfortunately, a number of contemporary Persian translators have neglected this and translated some of the terms in the common and contemporary meaning. This function can seriously damage the Quranic concepts. Since the main religious teachings of the Muslims are taken from the Quran, the slightest error should not occur in the transfer of Quranic concepts to another language. Since some Quran translators have failed to do so in some cases, we have reviewed the errors found in some translations. With the search method in the sources of the vocabulary and the interpretation of the old period, and contemporary dictionaries, we will show the semantic change brought to some Quranic words. Twelve words that have undergone a semantic change have been investigated in 29 Persian translations of the Qur'an and it has been concluded that some translators mistakenly translated those words into contemporary sense.

---

In study of world epic, we see the stories on the battle of father and son's. In some of them father kills his son and in another the son kills his father but some have relies on the taste of reader and tries to show their champion to be alive. The similarities in these stories ask this question that if these contents have single origin or each story is vernacular for his country. This article studies the stories of "Rostam and Sohrab" and "Koroglou and Kordouglu", the Turkish epic. Multiple similarities in these stories inspire us that the source of Korouglu and Korluglu is Firdowsi's Shahnameh. The similarity of Plot, motifs , characters , and other properties highlight this fact.

---

Research subject:Well-designed plastic foams, with respect to their cell density and cell size, open-or-close cells, and the cell uniformity, compared to their counterpart unfoamed plastic parts, beside of having the advantages of less material consumption, dimensional stability, better processability, and a higher surface quality, they can have superior mechanical and physical properties, including strength to weight, impact strength, thermal and dielectric properties. The temperature distribution in the different zones of the extruder, the qualities and quantities of the nanoparticle additives and their dispersion in the polymer matrix can have significant effect on the mechanical properties of the produced foams by the extruder.
Research approach: In this study, using an extruder, MA-g-polypropylene microcellular foams, containing 3, 7 and 9 wt% of nano-clay particles, were produced under three temperature arrangements on the extruder and the material and the processing effects on the mechanical properties were investigated.  
Main results: The result of this investigation shows that adding of nanoclay improves the mechanical properties of MA-g-PP.s foams. As an example, the results show that the sample with 7 wt% of surface modified nanoclay, owns about 10% higher impact toughness compared to the samples produced without nanoclay. Also for the same samples a rise of about 5% was recorded in Young's modulus. The microstructural studies of the produced foams by scanning electron microscope (SEM) show that adding of nanoclay can result on more foam uniformity and smaller cell size. In this study, the smallest average cell size (87.5 μm) and the lowest density (0.3 g/cm³) were recorded for a sample with 7wt% nanoclay.

---

Teaching every language has got its own special hindrances and features. Undoubtedly, teaching Arabic Language in Iranian schools is not excluded from this fact. Some of the hindrances of learning Arabic language are refered to the content order of the school books. Especially teaching Arabic high language in grade one seems to be a difficult job for some reasons such as the students' enterance to a new stage. If the different components of the books' content get realized and catagorized, the understanding and explication would be easier. Thus analizing the content of Arabic high school book in grade one can be an important step towards identification of its weaknesses. This article aims to evaluate the Arabaic high school book in grade one on the basis of content analysis patterns and arrangement criteria relying on Content Analysis Approach, which is a resaerch method for objective, quantitative and organized discription of superficial contents in communications. The research was descriptive-analytic. The results showed that considering These patterns and criteria, this school book has been highly successful in accurately performing the principles of edunation planning and content arrangement.  

---

The folk legends are considered as a part of valuable treasure of each culture. In Azarbayjan, legends have irrefrangible connection  with the name Aşig,  since , they are the heir of all epic , martial, festive stories of Azerbayjan. In one of this stories entitled Asli and Karam the hero of the story is similar to Qognos. All the story get vivified by lyrics of the hero, but at the end he burns and changes to ashes. This story connects with the elements of extraordinariness. In this study, the motifs of extraordinariness as apple, dream, wine of love and etc. are studied. The text of story is totally full of love motifs. This story begins with the birth of story’s hero with an apple and ends in the motif of magic cloth. The hero of the story has a passive personality and just suffers, and tolerates. For this reason the story lacks the epic aspects. This article investigates the motifs of Asli and Karam story

---

The contents of Taher and Zohreh's tale in Iran's variants (Turkman and Azarbayjan)
Abstract
The hidden myths in the folk tales explain historic identity of nations. One of these tales that has current in Asia Minor, central Asia, Azarbayjan and Arrant is Taher and Zohreh's tale. The tale is description of alignment of love in front of grudge, faith in front of perjury and revival against tradition. The tale as other "Asiglar" stories a bught contents is very rich. With due attention to this point that accomplished any study in Iran ,this article study interpret the contents of Taher and Zohreh's tale in two variants of Turkman and Azarbayjan , because each variant has particulars for its as the episode of Mahim in Turkman variant and "Analar Gosni"(redeploy of women) in variant of Azarbayjan, and show their contents in five parts :religious, generosity, surprising ,amorous and epic and show their similarities and differences.
Key Words: tale, Taher and Zohreh, Turkam, Azarbayjan

---

Plant growth promoting bacteria produce ACC deaminase (EC4.1.99.4) which regulates the biosynthesis of ethylene through cleavage of ACC (immediate precursor of Ethylene) into -ketobutyarate and ammonia. Therefore, it has an important role in plant growth promotion via lowering indigenous ethylene levels especially when the plants are exposed to an environmental stress. Therefore, this study aimed to investigate the cloning, expression, purification and determination of biochemical properties of ACC deaminase from Pseudomonas fluorescense. In this regard, the ACC deaminase encoding gene of Pseudomonas fluoresense FY32 was isolated and cloned in pET28 a (+) and the resultant pET28/acdS construct then was transformed into E. coli BL21(DE3). The expressed enzyme was purified by metal-affinity chromatography on Ni(2+)-TED-Sepharose column and then the optimum conditions and biochemical properties of the purified enzyme was examined. This enzyme showed the highest activity at 28 °C, pH 7 in the presence of 30 mM MgSO4. Also, the significant reduction of ACC deaminase activity was observed in 160 ppm of NaCl. The Km and Vmax of enzyme were calculated to be 9.66 mM and 0.11 nM mg-1 h-1, respectively (determined by the concentration of the produced α-ketobutyrate), which were relatively higher than those previously reported.

---

Abstract One of the topics that have been very much considered by the poets, it's a chess game. This game is from the themes seen in Arabic poetry, especially poetry of the Abbasid poets and Persian poets of the Iraqi and Azerbaijani style. Due to the prevalence of chess in various literary periods and the king's interest in it, the poets have been able to reveal their thoughts and emotions and the theme of their minds through the symbolic use of chess and vertebras. The purpose of this study is to compare the poetry of the Arab poets of the Abbasid period and the poets of the Iraqi and Azerbaijani style of Persian literature. The research method is descriptive-analytical in order to find out the chess phenomena in the poems of these two periods. The results of this research show that the symbol of chess has different meanings in Arabic and Persian poems. It can be said that the common themes of chess in the poems of the Arab poets of the Abbasid period and the style of Iraqi and Azerbaijani is that Iranian and Arab poets in some of their poems have likened the chessboard to worldly life due to the instability of its vertebrate on the chess board. And they consider chess as a tool for entertainment and a tool for polishing and defining mind or intellect. They also explain the scene of war and destiny and having a wisdom in life by interpreting the game.

---

By conducting three different methods, we report on the isolation of five novel strains of non-symbiotic bacteria from crushed infective juveniles (IJs) of four species of entomopathogenic nematodes (EPN) including Heterorhabditis bacteriophora, Steinernema carpocapsae, Steinernema feltiae, and Steinernema glaseri and five bacterial species from hemolymph of insect larvae infected with EPNs. Samples of hemolymph of infected Galleria mellonella L. larvae by EPNs and crushed surface sterilized IJs were bulk streaked onto both MacConkey and NBTA agar. To further ensure diagnoses, extracted DNA from IJs bulk was subjected to PCR by 16S-rRNA bacterial universal primers. Bacteria were identified using biochemical and phylogenetic analysis. Based on 16S-rRNA gene sequence, maximum parsimony, maximum likelihood and neighbour joining phylogenetic analyses were conducted, as well as comparisons of predicted RNA secondary structures. Four species of bacteria were identified including: Stenotrophomonas maltophilia strain IR11 from S. feltiae; S. pavanii strain IR20 from S. glaseri; Acinetobacter junii strain IR8 from S. carpocapsae; and Alcaligenes faecalis strains IR1 & IR15 from S. feltiae and H. bacteriophora respectively as non-symbiotic bacteria from IJs and five species probably originated from G. mellonella intestine including Citrobacter gillenii isolate S3, Enterobacter asburiae isolate S4, Klebsiella oxytoca isolate S5, Morganella morganii isolate S6 and Serratia marcescens isolate S6.

---

Due to the formation of numerous translations of the Qur'an and the important role of translation in relation of all sections of society with the teachings of the Holy Qur'an, scholarly criticism of the translations of the Holy Qur'an has emerged as one of the areas of Qur'anic studies in contemporary period. The importance of research in this field is understood when we see translational errors leading to differences in the perceptions of the Qur'an among the general public. Studies of the criticism of the translations of the Qur'an have sought to establish a critical mechanism for evaluating the translations of the Qur'an and hence, it introduces the translators slip places. The present study, through a descriptive and critical analysis, has investigated " Assumming different words as one due to negligence " as one of the slips of the Persian translators of the Holy Qur'an. Enumerating different types of assumming different words as one due to negligence, the two types of " Negligence in diagnosing the root of the words"and “Negligence in pay attention to the differences between similar constructions” have introduced and gave them 12 examples. Statistical reports of translators' performance in the studied samples indicate that translations of Ansarian, Bahrampour, Safavid Mousavi Garmaroudi and Ali Akbar Taheri's have the lowest Negligence. On the other hand, the translations of Mohammad Ebrahim Boroujerdi (9 slips), Mohammad Kazem Arfa (7 slips), Ibrahim Ameli (6 slips), Mohammad Kazem Moezzi (6 slips) have had less success in staying away from Assumming different words as one due to negligence.

 

---

 Discussion and research in different rhetorical and semantic aspects of the Quran, and especially the syntactic and rhetorical aspects, have astonished the Quranic researchers of every age. Among these rhetorical issues is the discussion of the Tanwin and its hidden intentions and purposes. This unique phenomenon of the Arabic language, which is widely used in the Holy Quran, has other secondary meanings that are sporadically mentioned in the syntactic books, in addition to its original meaning (indicating indefinite noun). By carefully reflecting on the Quranic verses, it appears that the Tanwin has other implications such as, amongst other things, magnification, reduction, proliferation, diversification, humiliation, generalization. A field survey of the Farsi translations of the Quran shows that most translators have not paid much attention to the Tanwin and its other semantic implications, and have largely meant it to indicate indefinite nouns. In this study, it has been attempted to criticize and analyze the semantic aspects of the Tanwin and its different implications in some of the Quranic verses translation by Abdurrahman Pirani et al. The results show that paying attention to the semantic and implicating dimensions of the Tanwin can be an effective step towards enhancing the semantic levels of Quranic expressions and discovering the rhetorical-semantic layers of this divine book. But this translation, along with many of its more prominent features, does not pay much attention to the secondary meanings of the Tanwin, and this has led to some divergence from some of the sublime meanings and concepts in the Quranic vocabulary.

---

Endoglucanase Cel9A from Alicyclobacillus acidocaldarius (AaCel9A), a thermophile enzyme, randomly breaks β1-4 glycosidic bond between glucose units in cellulose polymer and produces oligosaccharides with reducing end. In this study, first of all, E.coli BL21 cells were transformed by pDEST17 carrying AaCel9A enzyme gene for expression of the recombinant enzyme. After expression, the recombinant enzyme was purified by Ni-NTA affinity chromatography column and the purity of the recombinant protein was analyzed by SDS-PAGE. Due to impact of the calcium, pH and temperature on AaCel9A activity, the effects of these parameters were investigated on AaCel9A activity to optimize activity condition by using Response surface methodology. The SDS-PAGE result showed that AaCel9A, with molecular weight of 59 kDa, was expressed and purified. Response surface methodology data reveal that the effect of pH on the activity of the enzyme is higher than temperature and the calcium effect is less than temperature. Results showed that the optimum condition of AaCel9A activity reaches at pH 6.35 and 64.5 ˚C as well as 4.92 mM of calcium. Finally, the high correlation between experimental and predicted date indicated that the proposed model for optimizing the enzyme activity has a high accuracy.