توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱The Comparison of Two Methods of Steroid Therapy via Appendicostomy and Enema in Experimental Acetic Acid Induced Ulcerative Colitis in Dog
اطلاعات انتشار: World Applied Sciences Journal، بيست و ششم،شماره۱۲، ۲۰۱۳، سال
تعداد صفحات: ۸
Inflammatory bowel disease (IBD) including Crohn's disease (CD) and ulcerative colitis (UC) are chronic and debilitating diseases having unpredictable courses and with a complicated treatment. This study evaluated the effect of corticosteroids in therapy of acetic acid induced UC in dog as an animal model.UC was induced using 6% acetic acid as enema and two methods of treatment of antegrade (via appendicostomy) and retrograde (via enema) steroid therapy were compared histologically. The administration of acetic acid resulted into diarrhea, loose stools, gross bleeding and loss of body weight and histologically, loss of epithelium, crypt damage, depletion of goblet cells and infiltration of inflammatory cells. Comparing the two methods of UC therapy, it was shown that antegrade steroid therapy resolved damages better than the retrograde method. Antegrade steroid therapy may present an opportunity for the treatment of UC and may also broaden the current treatment options.

۲Non–linear ergodic theorems in complete non–positive curvature metric spaces
نویسنده(ها): ،
اطلاعات انتشار: Bulletin of Iranian Mathematical Society، سي و هفتم،شماره۳(پياپي ۷۵)، ۲۰۱۱، سال
تعداد صفحات: ۱۰
Hadamard (or complete $CAT(0)$) spaces are complete, non–positive curvature, metric spaces. Here, we prove a nonlinear ergodic theorem for continuous non–expansive semigroup in these spaces as well as a strong convergence theorem for the commutative case. Our results extend the standard non–linear ergodic theorems for non–expansive maps on real Hilbert spaces, to non–expansive maps on Hadamard spaces, which include for example (possibly infinite dimensional) complete simply connected Riemannian manifolds with non–positive sectional curvature.

۳IMPROVED CHROMATOGRAPHIC METHOD FOR DETERMINATION OF SODIUM DICLOFENAC IN INJECTABLE SOLUTION AND PREDICTION OF CHEMICAL STABILITY
نویسنده(ها): ، ،
اطلاعات انتشار: Journal of Sciences، چهاردهم،شماره۱(پياپي ۵۲)، Winter ۲۰۰۳، سال
تعداد صفحات: ۶
Two modified methods for assaying sodium diclofenac were developed by GC and HPLC. Diclofenac was converted into methyl ester derivative by methyl iodide in acetone. The ester was extract and subjected to GLC with flame ionization detector. %5 SE–30\chrom W–HP (80–100 mesh) was used as a column in GC. For reversed phase HPLC, the mobile phase was methanol and water (55–45). The separation was performed on an analytical 300×3.9 mm i.d. μ–bondapak phenyl column using UV detector (274 nm). O–(4–chlorobenzoyl)benzoic acid and mefenamic acid were used as internal standard for GC and HPLC method respectively. The stability of diclofenac was examined by results obtained from two chromatographic methods at high temperature. The described HPLC and GC methods were successfully applied for the prediction of the shelf life period of diclofenac.

۴Representations of Double Coset Lie Hypergroups
نویسنده(ها): ، ،
اطلاعات انتشار: Iranian Journal of Mathematical Sciences and Informatics، يازدهم،شماره۲، Nov ۲۰۱۶، سال
تعداد صفحات: ۱۰
We study the double cosets of a Lie group by a compact Lie subgroup. We show that a Weil formula holds for double coset Lie hypergroups and show that certain representations of the Lie group lift to representations of the double coset Lie hypergroup.We characterize smooth (analytic) vectors of these lifted representations.

۵INELASTIC DYNAMIC ANALYSIS OF STRUCTURES UNDER BLAST LOADS USING GENERALIZED B–SPLINE METHOD
نویسنده(ها): ، ،
اطلاعات انتشار: Asian journal of civil engineering، شانزدهم،شماره۲، Apr ۲۰۱۵، سال
تعداد صفحات: ۲۰
Quartic B–spline time integration method has been recently proposed for solving linear problems in structural dynamics. This paper developed this method to nonlinear dynamic analysis of single–degree–of–freedom (SDOF) systems under exploding loads. Using quartic B–spline basis function, this method gained second order of acceleration at each time–step. Thus it benefits from high accuracy compared to the methods in the literature. In this research, in order to applying the iterative process in the procedure, firstly, a series of standard formulas were derived from previous formulation. Then the Newton–Raphson iterative method used to develop new formulation for solving nonlinear dynamic problems. Finally, for the new scheme, a simple step–by–step algorithm is implemented and presented to calculate dynamic response of SDOF systems. The validity and effectiveness of the proposed method is demonstrated with two examples. The results were compared with those from the famous numerical method. The comparison shows that the proposed method is a fast and simple procedure with trivial computational effort.

۶Failure Probability and Remaining Life Assessment of Reheater Tubes
نویسنده(ها): ، ،
اطلاعات انتشار: International Journal of Engineering، بيست و ششم،شماره۵، May۲۰۱۳ ، سال
تعداد صفحات: ۱۰
In this study, a real and significant industrial problem in a steam power plant was investigated. Reheater tubes in boilers are under the creep and the fireside corrosion mechanism that cause some of them to fail. Since the estimation of probability of failure (PoF) and remaining life (RL) is expensive and time consuming in the deterministic methods, in this work they were evaluated using structural reliability analysis and distribution analysis based on in–site tests and selecting an appropriate limit state function (LSF).The criterion used for this purpose is based on the creep lifetime model and uncertainties. Sensitivity analysis was also studied in this research. The considered relationship among three affecting parameters on boiler tube failure including time, creep and fireside corrosion leads to evaluating RL besides PoF as well as obtaining PoF and RL simultaneously by selecting an appropriate time–based LSF. Most accurate results were achieved based on obtained PoF and RL values which cause to provide more reliable results for economic planning of future inspection periods. This leads to significant cost savings and operational safety improvements. A new software package, named RALA was developed via programming in Matlab. The obtained results are in good agreement with all data gained from the practical experiments in the power plant based on the previous studies.

۷Cooperative security administration in multi–security–domain environments using a variant of deontic logic
نویسنده(ها): ، ، ،
اطلاعات انتشار: Scientia Iranica، نوزدهم،شماره۳، ۲۰۱۲، سال
تعداد صفحات: ۱۹
Stream programming languages have become popular owing to their representations that enable parallelization of applications via static analysis. Several research groups have proposed approaches to software pipeline streaming applications onto multi\many–core architectures, such as CELL BE processors and NVIDIA GPUs. In this paper, we present a novel scheduling algorithm that software–pipelines streaming applications onto multi\many core architectures. The algorithm generates software pipeline schedules by formulating and solving MILP (Mixed Integer Linear Programming) problems. Experimental results show that compared to previous works, our approach generates schedules that use up to a 71% smaller amount of buffers needed for communication between kernels.

۸Developing a dynamic yield and growth model for saffron under different irrigation regimes
نویسنده(ها): ، ، ، ،
اطلاعات انتشار: International Journal of Plant Production، هفتم،شماره۳(پياپي ۲۵)، Jul ۲۰۱۳، سال
تعداد صفحات: ۳۲
Better irrigation management and more efficient management of crop production require modeling of plant growth and crop yield. More applicable models are usually simple and requires less and accessible inputs. The objective of this study was to develop a model for growth and yield prediction of saffron under various irrigation regimes. In this modeling soil water budget and other simple relationships for evapotranspiration partitioning, leaf area index determination and leaf dry mattertranspiration function, corm–transpiration function and saffron–corm function were used. The developed model was calibrated based on available data of basin irrigation experiment under different irrigation regimes and verified based on independent data under different climatic conditions. In calibration, the comparison between predicted and measured values of different crop parameters did not show any significant difference (P=0.05) and model was able to estimate LAI (with NRMSE=0.16), crop evapotranspiration (NRMSE=0.19), surface evaporation (NRMSE=0.22), leaf dry matter (NRMSE=0.33) and corm yield (NRMSE=0.19) and saffron yield (NRMSE=0.16) properly. In validation, the statistical results of comparison between predicted and measured values of various crop parameters were different and model was able to estimate corm and saffron yield with acceptable accuracy. Furthermore, this model might be used only for saffron crop because the incorporated crop functions are developed for saffron.
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