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Degradation of phenol by heterogeneous Fenton reaction using Fe/clinoptilolite
Maryam Bayat,Sayed Javid Royaee,Morteza Sohrabi 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.3
A novel heterogeneous catalyst for degradation of phenol has been synthesized. Dispersed metallic clusters of iron loaded on to clinoptilolite by impregnation method. Clinoptilolite belongs to the broad family of natural zeolites. The influences of pH, the mass ratio of iron to clinoptilolite, the ratio of hydrogen peroxide to phenol and catalyst loading on phenol degradation were investigated. An autocatalytic heterogeneous–homogeneous kinetic model was proposed for this reaction. Experiments were performed, using a stirred batch reactor under mild conditions with 100 mg L1 initial phenol concentration applying Fe/clinoptilolite as a catalyst and H2O2 as an oxidant. This new heterogeneous Fenton-like system resulted in a nearly total elimination of phenol and 70% COD removal during 30 min. In order to examine the effect of run time on the activity and stability of the catalyst, the degradation reaction was carried out applying a continuous packed bed reactor. It was observed that during 30 h time on stream no change in the activity of the catalyst or any structural deformation of the particles was occurred. A negligible release of iron from the catalyst during the reaction (6 ppm) may be related to the appropriate stability of the latter.
Kaysan Sohrabi,Houssein Ahmadi,Abdollah Amini,Behnaz Ahrabi,Atarodalsadat Mostafavinia,Hamidreza Omidi,Mansooreh Mirzaei,Fatemeh Fadaei Fathabady,Mohammadjavad Fridoni,Maryam Rahmannia,Sufan chien,Moh 한국실험동물학회 2023 Laboratory Animal Research Vol.39 No.4
Background: We aimed to examine the accompanying and solo impacts of conditioned medium of human adipose-derived stem cells (h-ASC-COM) and photobiomodulation (PBM) on the maturation stage of an ischemic infected delayed-healing wound model (IIDHWM) of rats with type 2 diabetes (TIIDM). Results: Outcomes of the wound closure ratio (WCR) results, tensiometrical microbiological, and stereological assessment followed almost identical patterns. While the outcomes of h-ASC-COM + PBM, PBM only, and h-ASC-COM only regimes were significantly better for all evaluated methods than those of group 1(all, p < 0.001), PBM alone and h-ASC-COM + PBM therapy achieved superior results than h-ASC-COM only (ranged from p = 0.05 to p < 0.001). In terms of tensiometrical and stereological examinations, the results of h-ASC-COM + PBM experienced better results than the PBM only (all, p < 0.001). Conclusions: h-ASC-COM + PBM, PBM, and h-ASC-COM cures expressively accelerated the maturation stage in the wound healing process of IIDHWM with MRSA in TIIDM rats by diminishing the inflammatory reaction, and the microbial flora of MRSA; and increasing wound strength, WCR, number of fibroblasts, and new blood vessels. While the h-ASC-COM + PBM and PBM were more suitable than the effect of h-ASC-COM, the results of h-ASC-COM + PBM were superior to PBM only.
Identification and expression pattern of lentil’s HSPs under different abiotic stresses
Khorshidvand Masoumeh,Ismaili Ahmad,Sohrabi Seyed Sajad,Madadkar Haghjou Maryam 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.5
Global warming is posing a serious threat to crop production that can cause various types of environmental stresses. The genetic information of lentil in response to environmental stresses is severely lacking. Heat shock proteins (HSPs) can help plants deal with the adverse conditions caused by abiotic stress. Therefore, the identification of key HSPs can help provide comprehensive insights into molecular mechanisms of abiotic stress. In this study, RNA sequencing data analysis was used to identify, classify, and study the changes in expression of HSPs in lentil under cold, heat, drought, and salt stresses. Finally, the expression changes of the top HSPs under all treatments and control condition were validated by qRT-PCR. The results showed that among the six identified HSP classes, HSP40 and HSP60 have the highest and lowest percentage of transcription members, respectively. Our findings also show that the expression of HSPs is opposite under heat and cold stress. In addition, the results showed that the highest levels of HSPs’ expression occurred in response to temperature stresses, especially heat stress, while this change was not significant in drought and salt stresses. In general, our findings show that there is varia- tion in the expression of HSPs in response to abiotic stresses, which can play an important role in better understanding the molecular mechanism of lentil tolerance to abiotic stresses.
Vinod Kumar Gupta,Shilpi Agarwal,Inderjeet Tyagi,Maryam Sohrabi,Ali Fakhri,Sahar Rashidi,Nima Sadeghi 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.41 No.-
Carbon nanofibers have been synthesized by simple facile microwave-assisted hydrothermal route andapplied as adsorbent for the fast adsorption of methamphetamine. The topological property of CNF wasanalyzed using XRD, SEM, TEM, and nitrogen adsorption–desorption instrumental techniques. Thesignificance of the independent variables and their interactions were tested by the analysis of variance(ANOVA) and t-test statistics. Influential parameters are optimized using BBD implemented with RSM,and the optimized value of pH, adsorbent dose and temperature was found to be 8.0, 0.1 g and 298 K,respectively. Under optimal conditions, the removal efficiency of methamphetamine was found to be55.25 mg/g.
IL-1B (C+3954T) Gene Polymorphism and Susceptibility to Gastric Cancer in the Iranian Population
Ismaili, Ahmad,Yari, Kheirollah,Moradi, Mohammad-Taher,Sohrabi, Maryam,Kahrizi, Danial,Kazemi, Elham,Souri, Zahra Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.2
Background: Gastric cancer as one of the most important diseases affecting health in all worldwide. Current studies have confirmed associations of cytokine gene polymorphisms with the risk of gastric cancer development. The current research aimed to assess the association of IL-1B+3954 genotypes with the risk of gastric cancer in the Iranian population. Materials and Methods: This case-control study covered 49 gastric cancer patients compared to 53 cancer free individuals as a control group. Genomic-DNA extraction was carried out from bioptic samples of patients and peripheral blood of healthy volunteers. Polymorphism of IL-1B +3954 genotypes were analysed with a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Results: The frequencies of IL-1B +3954 A1A1, A1A2 and A2A2 genotypes in healthy individuals were 26.4, 66 and 7.6 %, respectively. However, in gastric cancer patients, A1A1, A1A2 and A2A2 with 4.1, 51 and 44.9% were observed (p<0.05). Conclusions: The findings of our results show a positive association between the IL-1B+3954 genotype distribution and the risk of gastric cancer disease in the Iranian population.