Showing 9 results for Sabzali
Volume 5, Issue 4 (No.4 (Tome 20), (Articles in Persian) 2014)
Abstract
Tâti is one of the languages, which besides applying other means such as agreement and word order, uses case marking of dependents to show the grammatical relations in a sentence. Tâti is among the North-west Iranian languages. Tâti dialects are dispersed in some cities and villages in Ardebil, Qazvin, Zanjan and Gilan provinces. The Tâti variety studied in this article is the Dəravi variety, which is spoken in Khalkhâl. This article intends to study the case system of Dəravi. Although this variety of Tâti has retained some ancient characteristics, its case system has not been studied yet. This variety is highly endangered as its young speakers immigrate to neighboring cities in search of work, and they no longer transmit their mother language to the next generations.
Volume 5, Issue 14 (6-2017)
Abstract
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Volume 10, Issue 48 (February and March 2022)
Abstract
The Folk literature of the Iranian people is a heritage of the people which is mostly oral and is very different from the traditional Persian literature in terms of structure and content. Folk tone, simple language, and common thoughts from illiterate people are visible in this literature. What is known as folk literature is not created by a special person and It is not known who that particular person was in the beginning. There are songs in Shahroud of Khalkhal, that have been common in this region since ancient times. These songs are being forgotten today. The topics used in these songs show the concerns of the people who create them. The main question of this article is how the thematic analysis of Tati folk literature leads us to social, political, economical, and cultural points in this region. These songs were collected in the field. The result of the research shows that folk literature is a factor in recognizing rituals, people's spirits, political-social events, and economic concerns of the people of each region.
Volume 15, Issue 85 (3-2019)
Abstract
The meat is susceptible to microbial and chemical contamination and microbial growth and lipid oxidation are the main causes of meat spoilag. Therefore the use of anti-oxidant and antimicrobial preservatives is essential. Allium Ursinum plant as a medicinal plant, duty to it's highly sulfur content has antioxidan and antimicrobial properies. In this research a solution of 3% Alginate containing 0, 0.5, 1 and 1.5% of Allium Ursinum extract coatings were investigaed to prolonge the shelf life of veal fillet in refrigerator condition. Veal fillets were coated with sodium alginate enriched by Allium Ursinum extract and mesophilic and psychrotrophic bacterial growth, moisture content, pH, TBA, PV and sensory characteristics evaluated for a period of 28 days periodically at 1, 7, 14, 21 and 28 days. The resulats of microbial assey showed that veal fillet coating with sodium alginate containing Allium Ursinum significantly decreased psychrophilic and mesophilic bacterial growth during 28 days storage at rfrigraed condition. Samples that coated with alginate coating- containning 1.5% Allium Ursinum extrac showed lower TBA, PV and pH values compared to control during the storage time. Samples treaed with sodium alginate containing 1% Allium Ursinum exract obatined the highest score of sensorial properties. According to the obtained results from the present study alginate-Allium Ursinum could be effective to increase the shelf life of veal fillet in refrigerated condition.
Volume 16, Issue 6 (11-2014)
Abstract
Fennel (Foeniculum vulgare Mill.) is an industrial medicinal plant with different pharmaceutical and food applications. In this study, the leaf essential oil composition of 12 Iranian accessions of fennel collected from different geographical regions was assessed. The essential oil yield of fennel leaves ranged from 0.65% (Varamin accession) to 2.03% (Tabriz accession). Trans-anethole, fenchone and limonene were highly abundant in all of the examined oils. Trans-anethole ranged from 41.19% in Shiravan to 56.6% in Shiraz accessions and had negative correlation with most of the constituents. According to the major compounds, two chemotypes were defined in which group 1 was considered as the high trans-anethole (> 50%) and group 2 was a high limonene group. The correlation of essential oil yield and trans-anethol with climatic conditions and some morphological characters were also assessed. Higher temperatures and essential oil yield had negative Pearson correlation (r= -0.371), while trans-anethol and high temperature showed positive correlation (r= 0.459) in fennel. Furthermore, the studied accessions had different flowering time and height. The early flowering and dwarf accessions had higher essential oil yield, while the late flowering ones had higher trans-anethol in their leaves.
Volume 19, Issue 2 (3-2017)
Abstract
Variability in morphological traits, phenolic content, and antioxidant activity of 15 populations of Iranian Ferula species collected from natural habitats in different regions of Iran were investigated. Total Phenolic Content (TPC) of fruit extracts varied from 12.77 to 120.72 mg tannic acid per 1g dry weight. Total flavonoid of fruits extract varied from 5.45 mg quercetin per 1 g dry weight in F. assa-foetida to 8.09 mg QUE g-1 in F. ovina. Antioxidant activity of fruits was assessed using three model systems. Fruits extract showed excellent radical scavenging activity as compared to BHT. Similar trend was also obtained in reducing power (FTC) and β-carotene-linoleic acidmodel systems. The cluster analysis subdivided the populations in three major groups. Group 1 possessed high inhibition of beta-carotene (> 60%), while group 2 showed low percent of inhibition (< 35%). Group 3 revealed the lowest TPC, TFC, and antioxidant activity. Most of Ferula populations (group 1) were more potent for scavenging of free radicals in lipid phases in comparison with aqueous phase. In this study, some fruit morphological traits were also measured in populations. Among the studied species, F. gummosa had the highest fruit length and thousand kernel weight and length/width ratio as well as high antioxidant activity. In overall, the results revealed the scientific basis for traditional usage of the studied Ferula species as spice plants and their potential as a rich source of natural antioxidant and flavonoid source.
Volume 20, Issue 2 (3-2018)
Abstract
Despite the broad applications of nanotechnologies in the present age, there are concerns about its ecological consequences. In this regard, the purpose of this study was to analyze ecological consequences of nanotechnology in the field of agriculture. The research method was descriptive, which was carried out by a survey technique for gathering data. The statistical population of the study included all researchers, experts, and faculty members of national agricultural research institutes and centers across Iran (N=190); out of them, 123 individuals were selected by using Krejcie and Morgan sample size Table along with stratified random sampling method with proportional assignment (n=123). The research instrument was a questionnaire whose face and content validity was confirmed by a number of faculty members of agricultural extension and education and experts in the field of nanotechnology. The reliability of ecological consequences of nanotechnology items was also obtained by a pilot study using Cronbach’s alpha coefficient (α= 0.78). To identify the ecological consequences of nanotechnology by taking advantage of factor analysis, five factors entitled “social consequences”, “health-care consequences”, “economic consequences”, “cultural consequences”, and “biological consequences” were extracted. As a whole, these factors explained 58.40 percent of the total variance of ecological consequences of nanotechnology in the field of agriculture.
Volume 23, Issue 1 (Winter 2020)
Abstract
Aims: The aim of the present study was to design and express an anti-HER2 single chain variable antibody fragment in E. coli BL21 (DE3) and evaluate its efficiency in recognition of HER2 protein.
Materials & Methods: An approximately 746bp encoding gene fragment was cloned into pET28a and the recombinant protein was expressed in E. coli BL21 (DE3) strain. Following protein purification by affinity chromatography, western blotting and ELISA were used to evaluate the efficiency of anti-HER2 scFv against HER2 protein.
Findings: E. coli can express the anti-HER2 scFv molecule possessing appropriate function and can detect this protein on the surface of breast cancer cells.
Conclusion: This antibody fragment can be used in laboratory diagnostic methods for HER2 diagnostic approaches. Potential capability of this protein in immunohistochemical and imaging approaches against HER2 should be considered.
Volume 24, Issue 8 (August 2024)
Abstract
The main goal of present work is to identify the appropriate austenitising category to achieve the austempered ductile irons with dual matrix structure having the best possible machinability. In this regard, specimens of low-alloyed ferritic spheroidal graphite cast iron were prepared by casting process. In order to obtain a mixed ferrite-austenite structures having different volume fraction of austenite phase, samples were subjected to one of two processes: a) partial austenitising at 870 oC for various times (5 to 60 min) or b) intercritical austenitising at various temperatures (750, 765, 780 and 800 oC) for 60 minutes. After that they were austempered in molten salt at a temperature of 350 oC for one hour. During turning with a lathe equipped with a force dynamometer, the cutting forces of the workpieces were measured as a general adopted criterion for machinability investigation. According to the obtained results, with the increase of partial austenitising time or intercritical austenitising temperature, the volume fraction of the ausferrite phase increased, but the cutting force decreased initialy and then increased. For a certain percentage of the ausferrite phase, the turning of samples prepared with partial austenitising process was associated with lower cutting force, compared to the samples obtained by the intercritical austenitising process. In general, it can be concluded that the maximum machinability of dual matrix ductile iron austempered at 350 oC is achieved when the selected austenitising temperature and time results to creation dual matrix structure containing 39 ± 3 Vol% ausferrite phase
