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Yahya Tajvar,Reza Fotouhi Ghazvini,Yousef Hamidoghli,Reza Hassan Sajedi 한국원예학회 2011 Horticulture, Environment, and Biotechnology Vol.52 No.6
The production of reactive oxygen species (ROS) in plants under low temperature stress causes damage to plants. In order to evaluate the antioxidant responses of Thomson navel young trees (two years old) on different rootstocks under low temperatures, an experiment was conducted in a factorial plan based on completely randomized design. Treatments of temperatures were at seven levels including 9, 6, 3, 0, -3, -6℃, and 25 ± 2℃ (as control) and rootstocks were Sour orange,Citrange and Trifoliate orange. Results of interactive effects of factors showed that electrolyte leakage (EL), antioxidant capacity, catalase (CAT) and ascorbate peroxidase (APX) activity were significant at P < 0.01. Maximum EL was observed in Thomson navel on Sour orange at -6℃, while the highest antioxidant capacity, CAT and APX activity respectively with mean 75.06%, 0.45 and 4.350 IU・g-1 FW were observed in Thomson navel on Trifoliate orange rootstock at 0, -3 and 0℃. Low temperatures increased EL, lipid peroxidation, antioxidant capacity, superoxide dismutase (SOD), APX, CAT and peroxidase enzyme activities (P < 0.01). Due to effects of rootstock, lipid peroxidation reduced to 52 % (P < 0.01). The biochemical and physiological study of this experiment indicated that Thomson navel on Trifoliate orange rootstock, had best tolerance to freezing stress.
Challenges to Achieving Universal Health Coverage Throughout the World: A Systematic Review
Darrudi, Alireza,Khoonsari, Mohammad Hossein Ketabchi,Tajvar, Maryam The Korean Society for Preventive Medicine 2022 예방의학회지 Vol.55 No.2
Objectives: No systematic review has explored the challenges related to worldwide universal health coverage (UHC). This study reviewed challenges on the road to UHC. Methods: A systematic electronic search of all studies that identified the challenges of worldwide UHC was conducted, without any restrictions related to the publication date or language. A hand search and a bibliographic search were also conducted to identify which texts to include in this study. These sources and citations yielded a total of 2500 articles, only 26 of which met the inclusion criteria. Relevant data from these papers were extracted, summarized, grouped, and reported in tables. Results: Of the 26 included studies, 7 (27%) were reviews, 6 (23%) were reports, and 13 (50%) had another type of study design. The publication dates of the included studies ranged from 2011 to 2020. Nine studies (35%) were published in 2019. Using the World Health Organization conceptual model, data on all of the challenges related to UHC in terms of the 4 functions of health systems (stewardship, creating resource, financing, and delivering services) were extracted from the included studies and reported. Conclusions: This study provides a straightforward summary of previous studies that explored the challenges related to UHC and conducted an in-depth analysis of viable solutions.