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RISS 인기검색어
- 검색키워드
- 저자 : Saeed Sharafi (검색결과 4 건)
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Effect of Fe, Zn and Cu on quantity and quality characteristics and nutrient accumulation in wheat
Saeed Sharafi,Fatemeh Sharifdost,Fatemeh Mohajeri 한국작물학회 2021 Journal of crop science and biotechnology Vol.24 No.4
Wheat is the most important food on earth. Therefore, to produce high-quality products with efcient utilization, the micronutrient groups are needed. This investigation was conducted to determine the efects of soil and foliar application of Fe, Zn, and Cu on the quantity and quality characteristics and nutrient accumulation in wheat. Experimental treatments were made to a control, Fe, Zn, Cu, FeZn, FeCu, ZnCu, and FeZnCu in two groups (soil application and foliar application), carried out as a completely randomized block design in four replications at Arak University in Iran. Amounts of soil application of those elements were: 5 kg h−1 Sequstrine 138 Fe, 20 kg h−1 ZnSO4, and 10 kg h−1 CuSO4. Foliar application was the concentration of 2 per thousand in stages of tilling and stem elongation. According to the results, grain yield, dry matter, the concentration of Fe, Zn and Cu, protein percent, wet gluten, gluten index, bread volume, hardness index and water absorbtion traits were signifcant (P<0.01). Our researchers ensured that treatments showed higher groups compared to the control of Fe and FeZn in the soil application (14.57% and 12.23%, respectively) and FeZnCu in the foliar application (7.82%) for grain yield, and treatments of Fe and FeZn in soil application (16.28% and 13.99%, respectively), and FeZnCu in the foliar application (9.67%) for dry matter. The soil application of Cu had the highest efect on protein percentage (15.43%), wet gluten (43.24%), bread volume (556.09%), hardness index (51.01%), and water absorbtions (68.02) of wheat. The highest coefcient of variation belonged to wet gluten and gluten index, which would be employed in the wheat bread breeding program to improve the baking quality characteristics in breeding materials.
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Sharafi Saeed 한국작물학회 2023 Journal of crop science and biotechnology Vol.26 No.3
Nitrogen (N) and zinc (Zn) play a crucial role in determining and improving the quantitative and qualitative yields of the crops. On the other hand, high mobility of N and its role in the pollution of environment and groundwater resources have caused many problems. Therefore, the main aim of this study is to investigate the efect of diferent methods of application of Zn on crop yield, protein content, and micronutrient concentrations (Zn, Fe and Mn) in rainfed wheat grain under reduced soil N fertilizer supply. The experiment was conducted using the factorial arrangement of randomized complete block design (RCBD) with three replications (2017–2020). The application treatments of N were considered as N0, N30, N60, and N90 kg ha−1 from the urea source and Zn application treatments include Zn0, Zn10, Zn20, Znfo, Zn10-Znfo, and Zn20-Znfo kg ha−1 from the Zn sulfate. The results revealed that the efect of N and Zn consumptions on grain yield and total dry matter (TDM) were signifcant at the level of 1%. The highest grain yield and TDM (3435.3 and 7161.8 kg ha−1) were obtained from N30-Znfo treatment. Also, the highest protein content related to N60Zn20 was equal to 13.4 percent. Grain Zn bioavailability increased with decreasing the soil N rates, but decreased after foliar application of Zn fertilizers. Foliar application signifcantly increased phytic acid (PA), Fe and Mn concentrations in grain, and the amounts of these increases were greater when Znfo was lonely applied or N30-Znfo and N60-Znfo was used. It was concluded that with Znfo application in rainfed wheat cultivation, the N fertilizer supply was reduced by 50%. Therefore, under this condition, the use of N60 is recommended.
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Ehsan Mostafavi,Mahshid Nasehi,Abdolrazagh Hashemi Shahraki,Saber Esmaeili,Ebrahim Ghaderi,Saeed Sharafi,Amin Doosti-Irani 한국역학회 2016 Epidemiology and Health Vol.38 No.-
OBJECTIVES: The tuberculin skin test (TST) and the QuantiFERON-TB Gold test (QFT) are used to identify latent tuberculosis infections (LTBIs). The aim of this study was to determine the agreement between these two tests among health care workers in Iran. METHODS: This cross-sectional study included 177 tuberculosis (TB) laboratory staff and 67 non-TB staff. TST indurations of 10 mm or more were considered positive. The Student’s t-test and the chi-square test were used to compare the mean score and proportion of variables between the TB laboratory staff and the non-TB laboratory staff. Kappa statistics were used to evaluate the agreement between these tests, and logistic regression was used to assess the risk factors associated with positive results for each test. RESULTS: The prevalence of LTBIs according to both the QFT and the TST was 17% (95% confidence interval [CI], 12% to 21%) and 16% (95% CI, 11% to 21%), respectively. The agreement between the QFT and the TST was 77.46%, with a kappa of 0.19 (95% CI, 0.04 to 0.34). CONCLUSIONS: Although the prevalence of LTBI based on the QFT and the TST was not significantly different, the kappa statistic was low between these two tests for the detection of LTBIs.
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Prevalence of latent tuberculosis infection among tuberculosis laboratory workers in Iran
Mahshid Nasehi,Abdolrazagh Hashemi-Shahraki,Amin Doosti-Irani,Saeed Sharafi,Ehsan Mostafavi 한국역학회 2017 Epidemiology and Health Vol.39 No.-
OBJECTIVES: The risk of transmission of Mycobacterium tuberculosis from patients to health care workers (HCWs) is a neglected problem in many countries, including Iran. The aim of this study was to estimate the prevalence of latent tuberculosis (TB) infection (LTBI) among TB laboratory staff in Iran, and to elucidate the risk factors associated with LTBI. METHODS: All TB laboratory staff (689 individuals) employed in the TB laboratories of 50 Iranian universities of medical sciences and a random sample consisting of 317 low-risk HCWs were included in this cross-sectional study. Participants with tuberculin skin test indurations of 10 mm or more were considered to have an LTBI. RESULTS: The prevalence of LTBI among TB laboratory staff and low-risk HCWs was 24.83% (95% confidence interval [CI], 21.31 to 27.74%) and 14.82% (95% CI, 11.31 to 19.20%), respectively. No active TB cases were found in either group. After adjusting for potential confounders, TB laboratory staff were more likely to have an LTBI than low-risk HCWs (prevalence odds ratio, 2.06; 95% CI, 1.35 to 3.17). CONCLUSIONS: This study showed that LTBI are an occupational health problem among TB laboratory staff in Iran. This study reinforces the need to design and implement simple, effective, and affordable TB infection control programs in TB laboratories in Iran.
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