Showing 5 results for Amirahmadi
Shahrokh Kazempour Osaloo, Akram Kaveh, Atefe Amirahmadi,
Volume 5, Issue 1 (11-2014)
Abstract
The chloroplast gene matK, formerly known as ORF509, has been identified as one of the most rapidly evolving genes at the nucleotide and corresponding amino acid levels. This gene is located in the large single-copy region of the chloroplast genome, and placed between the 5’ and the 3’ exons of trnK (tRNA-lysine) within a group II intron. The matK RNA and protein levels are affected by light and developmental stages, suggesting functional roles for this putative maturase that affect in photosynthesis indirectly. The matK has been considered as one of the most useful genes for resolving phylogenetic and evolutionary relationships at a range of taxonomic levels, from closely related species to the generic, familial, and even supra-familial levels among land plants, especially Angiosperms. The matK as a DNA barcode for land plants showed high levels of discrimination among angiosperm species that can be used single or in combination with other genes.
Volume 10, Issue 1 (4-2010)
Abstract
In restructured power systems and in a wholesale power market, a distribution company as a market player intends to maximize its profit by utilizing its options. Hence determining an optimal energy acquisition strategy for a distribution company is vital, for attaining to this goal. However an important challenge for determining these strategies is forecasting other competitors and Generation companies' strategies and competitors' incomplete information must be considered as uncertainties in the problem. In this paper, an energy acquisition model for a distribution company with considering distributed generations, interruptible loads and information's uncertainties in a day-ahead electricity market has been presented. In the proposed method, distribution company energy acquisition strategy has been modeled as a two-level multi-objective optimization problem and has been solved by using nonlinear complementarities and L-P metric methods and then, the uncertainties in the competitors' information, has been applied to the model by using Monte Carlo method. An 8-bus system is employed to illustrate the proposed model and algorithm.
Volume 19, Issue 3 (March 2019)
Abstract
In this study, the method of releasing strains for calculating residual stresses in hole drilling process has been considered. For this purpose, a thick piece of cylindrical aluminum of 5 mm thickness has been investigated. Stepwise and high-speed drilling was performed in several successive steps, and released strains were recorded by a rosette strain gauge. The distribution of released strains in 3 forms of functions in the depth of the hole has been studied to transform strains to stresses, a linear function, a second-order function, and a third-order function. For each case, the longitudinal, tangential, shear stresses, principle stresses, and principle angles in the thickness of the piece were calculated and the results of the convergence analysis by the Tikhonov regularization were evaluated. In the end, the results are evaluated and compared for 3 modes. The results of the comparison of stresses and the degree of curves have shown that the third-order curve is more suitable for evaluation of released strains and using to transform them to residual stresses, and the magnitude of the error in the second-order curve is greater than the two other modes.
Volume 20, Issue 137 (July 2023)
Abstract
Accurate food labelling is of utmost importance for fair trade and empowering consumers to make knowledgeable choices. Quantitative assessment of the meats is one of the most important factors in authentication of this meat product. Therefore, the purpose of this research was the efficiency of the stereological method for detection of the percentage of meat used in raw (Hamburger) and heat-treated (Sausage) meat products. In this study, three samples of beef burger (containing 30, 60 and 90 % meat) and sausage (containing 40, 60 and 90 % meat) were prepared. Each sample was flattened, and then fractionator sampling using a perforated plate as a cutting guide was used for getting systematic uniform random blocks. Totally, 12 blocks were taken from each sample. Each block was fixed in 10 % neutral formalin and embedded in paraffin. The obtained samples, after preparation of tissue sections and staining using haematoxylin and eosin (H&E), were studied by a light microscope. The data were analyzed using one-way ANOVA statistical method and t-test was used to compare significance difference between groups. Stereological analysis showed that the estimated meat percentages in beef burger in different percentages (30, 60 and 90%) did not have a significant difference with the real percentages of meat. In the case of sausage, there was significant difference between the estimated meat percentages and the real percentages of meat in different samples of sausage. Stereology method can be a suitable complementary method to detect the amount of meat used in raw meat products.
Volume 26, Issue 3 (Fall 2022)
Abstract
A cinematic work is a type of work of art that in most national systems is subject to special rules compatible with the nature, type of this work and its thriving industry. In national law, despite the flourishing film industry in society and its numerous enthusiasts, it has not been legislated and does not have a set of rules governing it. One of the reasons for this gap is the lack of a precise definition of this work and the lack of recognition of its nature. The main question is what is the nature of the cinematic work in the existing legal gaps? With the definition of joint work in the current laws of intellectual property, according to the law of France and Iran, unlike England, India and the United States, the cinematographic work is considered a joint work, and in the review of other categories can be said that a cinematic work is a derivative, adapted, audio-visual work. In all the examined laws, the cinematic work is an adapted work, because the use of the elements of the original work and the change in the format in the second work and a relative originality in creativity and innovation to create an adapted work are mentioned in all the examined laws, so it should be considered The rights of adapted works should be implemented in the national legislation to respect the rights of the author of the original work and to protect the cinematographic work. Also, in French law, like Iranian law, a cinematic work is considered a joint work, so how to exploit this work in French law should be taken into consideration in the legislation for cinematic works in Iran
