The role of field redefinition on renormalisability of a general N=12N=\frac{1}{2} supersymmetric gauge theories

We investigate some issues on renormalisability of non-anticommutative supersymmetric gauge theory related to field redefinitions. We study one loop corrections to $N=\frac{1}{2}$ supersymmetric $SU(N)\times U(1)$ gauge theory coupled to chiral matter in component formalism, and show the procedure which has been introduced for renormalisation is problematic because some terms which are needed for the renormalisability of theory are missed from the Lagrangian. In order to prove the theory is renormalisable, we redefine the gaugino and the auxiliary fields($\lambda, \bar F$), which result in a modified form of the Lagrangian in the component formalism. Then, we show the modified Lagrangian has extra terms which are necessary for renormalisability of non-anticommutative supersymmetric gauge field theories. Finally we prove $N = \frac{1}{2}$ supersymmetric gauge theory is renormalisable up to one loop corrections using standard method of renormalisation; besides, it is shown the effective action is gauge invariant.Comment: arXiv admin note: text overlap with arXiv:hep-th/0505248 by other author

Perfluorocarbon liquid migration into the subarachnoid space in a patient with morning glory syndrome

Purpose: To report a case of perfluorocarbon liquid (PFCL) migration into the subarachnoid space at the time of vitreoretinal surgery in a patient with morning glory syndrome associated retinal detachment. Case report: A 9-year-old girl underwent pars plana vitrectomy and silicone oil injection for retinal detachment associated with morning glory syndrome. PFCL was used for retinal stabilization before endolaser photocoagulation. The retina detached, and repeated vitrectomy and silicone oil injection was performed. Postoperative magnetic resonance imaging revealed PFCL in the subarachnoid space. Conclusion: The migration of perfluorocarbon into the subarachnoid space is a rare complication of vitrectomy in patients with morning glory syndrome. © 2015 Iranian Society of Ophthalmology

Evaluation of expression ratio of HOXB13:IL17BR in patients with breast cancer by qRT-PCR method using SYBR Green dye

Background and aims: Studies have shown that a HOXB13:IL17BR expression ratio index predicts clinical outcome in ER-positive, lymph node-negative breast cancer patients that treated with adjuvant tamoxifen. All of these experiments were conducted with qReal Time RT-PCR using TaqMan probes. The aim of this study was to determine the ratio using SYBR Green I qReal Time RT-PCR. Methods: In this case- control study, expression levels of HOXB13:IL17BR was measured in 40 paired formalin-fixed, paraffin-embedded primary breast tumor specimens. After extracting RNA from the tissues, cDNA synthesis and amplification with the polymerase chain reaction to obtain the optimum annealing temperature, the expression levels was measured by SYBR Green I qReal Time RT-PCR. To determine and normalize the expression levels, BestKeeper software was used to obtain the BestKeeper Index using the geometric mean of expression levels of housekeeping genes. Comparison of mean expression of genes between tumoral and non-tumoral tissues was performed by t-test and association between patient grouping (high/low risk) and time for disease free survival was assessed by Fisher`s Exact test. Results: HOXB13:IL17BR expression value did not show significant difference between tumoral and non-tumoral tissues. The results showed that there was a direct and significant association between patient grouping (based on HOXB13:IL17BR ratio) and disease free survival status. Conclusion: Results in the current study showed that in spite of using SYBR Green dye (instead of TaqMan probes), there is still a significant correlation between HOXB13:IL17BR ratio and disease free survival status

Effects of β -hydroxy- β -methylbutyrate on kidney parameters and body composition in untrained males after 8 weeks combination resistance training

زمینه و هدف: مطالعات علمی دقیق در مورد بی خطر بودن بتاهیدروکسی بتامتیلبوتیرات (HMB) در انسان تاکنون انجام نشده است و تنها مطالعات اندکی در مورد تاثیر این مکمل بر شاخص های مرتبط با سلامت در حیوانات انجام شده است. این مطالعه با هدف بررسی تاثیر 8 هفته تمرین مقاومتی به همراه مصرف مکمل بتا- هیدروکسی بتا- متیل بوتیرات (HMB) بر شاخص های کارکرد کلیوی و ترکیب بدنی مردان غیر ورزشکار انجام شد. روش بررسی: در این کارآزمایی بالینی 24 دانشجوی پسر غیر ورزشکار انتخاب و به صورت تصادفی به دو گروه کنترل (دارو نما، 14نفر) و تجربی (مکمل، 10 نفر) تقسیم شدند. هر دو گروه 8 هفته تمرین مقاومتی را به صورت 3 جلسه در هفته، اجرا کردند. از آزمودنی ها یک روز قبل و 2 روز بعد از برنامه تمرینی، نمونه خون و ادرار در حالت ناشتا گرفته شد و برای تمام نمونه ها اوره و کراتینین اندازه گیری و میزان فیلتراسیون گلومرولی نیز محاسبه گردید. ترکیب بدنی، وزن آزمودنی ها و قدرت بالا تنه و پایین تنه اندازه گیری شد. تجزیه و تحلیل داده ها با استفاده از آزمون های آماری t زوجی و t مستقل انجام گرفت. یافته ها: گروه مکمل افزایش معنادار در توده خالص بدنی (002/0P=) و کاهش معناداری در توده چربی بدن (006/0P=) داشت. همچنین، مکمل سبب کاهش معنادار غلظت ازت اوره ادرار (036/0P=) شد ولی تاثیر معناداری بر غلظت ازت اوره خون، کراتینین خون، کراتینین ادرار و میزان فیلتراسیون گلومرولی نداشت. نتیجه گیری: مصرف مکمل بتا- هیدروکسی بتا- متیل بوتیرات باعث افزایش توده خالص بدنی و قدرت یک تکرار بیشینه و کاهش چربی بدن در افراد غیر ورزشکار می شود. ولی تاثیر زیان آوری بر عملکرد کلیوی در مدت مصرف شده در این مطالعه ندارد

Free Reducing Agent, One Pot, and Two Steps Synthesis of Ag@SiO[2] Core-shells using Microwave Irradiation

In this work a new method for the fabrication of Ag@SiO[2] nanoparticles have been proposed that is completely different from Stober method. Ag nanoparticles were synthesized using microwave irradiation. polyvinylpyrrolidone was used as stabilizer and capping agent, 3-Aminopropyltriethoxysilane as functionalizer of silver particles in fully ethanol solution. The Ag nanoparticles were used subsequently without any subtraction and treatment in the preparation of Ag@SiO[2] core-shell nanoparticles. UV-Vis spectroscopy shows a characteristic plasmon peak at 400 nm and 430 nm for Ag nanoparticles and Ag@SiO[2] coreshells. Transmission electron microscope images show that Ag nanoparticles have the average size of 10 nm. It is also depicted that SiO[2] shell structure was formed uniformly with the average size of 10 nm. The application of 3-Aminopropyltriethoxysilane in the preparation of core-shells yields single Ag core structure

Techno-economic assessment and optimization of a solar-assisted industrial post-combustion CO2 capture and utilization plant

This paper studies the techno-economic feasibility of the solar-assisted regeneration process of the largest industrial CO2 removal monoethanolamine-based plant in Iran. The plant incorporating parabolic troughs is modelled using System Advisor Model software and the weather data are derived from the European Commission's Photovoltaic Geographical Information System. Sensitivity analyses are realized to evaluate the effect of important parameters, i.e., the solar multiple and the hours of storage, and to reveal the optimum case. The studied impacts are linked to the overall net energy generation and the levelized cost of heat (LCOH). The optimum case is found to have a solar multiple of 3.1 and 18-hours of storage, resulting in a solar share of 0.7 and a LCOH of 3.85 (¢/kWh). When compared to the base case (solar multiple of 2 and 6 h of storage), the optimum solution results in a similar LCOH but it achieves the generation of an additional 16,112 MWhth annually. The thermal energy supplied by the solar system leads to an annual reduction in the natural gas consumption of approximately 3.8 million m3 that results in a CO2 emission reduction of 7.1 kton.The corresponding authors would like to acknowledge the University of Tehran and the Iran’s National Elites Foundation for providing support at this work. The authors would also like to thank Paul Gilman from SAM support at the National Renewable Energy Laboratory. Last but not least, technical supports of the Kermanshah Petrochemical Industries Co. and the Shahrekord Carbon Dioxide Co. are gratefully acknowledged. Fontina Petrakopoulou would like to thank the Spanish Min- istry of Science, Innovation and Universities and the Universi- dad Carlos III de Madrid (Ramón y Cajal Programme, RYC-2016- 20971)

Comparison between the Effects of Green and Black Tea, and Fluoride on Microhardness and Prevention of Demineralization of Deciduous Teeth Enamel

BACKGROUND AND OBJECTIVE: Dental caries in preschool children impose serious problems on parents and children due to lack of cooperation. Since tea leaves contain fluoride and polyphenol, this study was conducted to compare the effects of green and black tea, and fluoride in preventing demineralization of deciduous teeth enamel.  METHODS: This experimental study was performed on 40 extracted human deciduous incisors. The teeth were divided into 4 groups of 10 and were then placed in distilled water, green tea, black tea and oral sodium fluoride (0.05) for four minutes in seven consecutive days. Surface microhardness before and after tooth extraction was determined in these four solutions by Micro Vickers Hardness Testing Machine. To cause primary caries, each sample was kept for one week in demineralization solution and the concentrations of the released calcium, phosphorus and fluoride ions were analyzed by spectrophotometric and potentiometric laboratory methods.  FINDINGS: Primary microhardness showed no significant difference between the groups. Secondary microhardness compared to primary microhardness in the two groups of green tea (mean of 317 ± 65.47 to 386 ± 85.42, p = 0.003) and fluoride (mean of 319 ± 71.76 to 446 ± 117.15, p = 0.003) increased significantly. The concentration of calcium and phosphorus ions in the four study groups showed a significant difference after being placed in the demineralization solution (p = 0.001) (p = 0.003). However, this difference was not observed in fluoride concentrations.   CONCLUSION: The results of this study showed that drinking green tea can increase the microhardness and green and black tea increase the resistance to demineralization of the deciduous teeth enamel.&nbsp

Seroprevalence of SARS-CoV-2 in Guilan Province, Iran, April 2020

We determined the seroprevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in an affected area in northern Iran in April 2020. Antibodies to SARS-CoV-2 were detected in 528 persons by using rapid tests. Adjusted prevalence of SARS-CoV-2 seropositivity was 22.2 (95 CI 16.4-28.5). © 2021 Centers for Disease Control and Prevention (CDC). All rights reserved