ORCID Profile
0000-0002-4866-0791
Current Organisation
University of Tehran
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Publisher: Informa UK Limited
Date: 09-05-2019
Publisher: Elsevier BV
Date: 05-2019
DOI: 10.1016/J.ECOENV.2019.02.060
Abstract: Phosphorus (P) deficiency is one of the major problems in agricultural soils for crop production around the world. Use of silicon (Si) and phosphate-solubilizing bacteria (PSB) is known as one of the most effective and economical ways for increasing P availability and improving P use efficiency under low P conditions. However, little is known about the alleviative role of Si and PSB together in mitigating P-deficiency stress and in improving P use efficiency in Triticum aestivum L. (wheat), as one of the most important crop plants worldwide. Consequently, aim of the research was to study the combined and single effects of Si (0, 150, 300, and 600 mg kg
Publisher: Wiley
Date: 18-01-2022
Abstract: Accurate, simple, and economical control of nitrite and nitrate concentrations is of great importance because of the adverse environmental effects and threats to the food chain of living organisms. Due to the high potential of plasmonic nanoparticles (NPs) especially gold NPs (AuNPs) in sensor design, in this study, we have presented a method for nitrite and nitrate measurement based on leaching of spherical AuNPs. We have utilized a non‐toxic thiol‐containing compound that forms cationic complexes with gold ions and consequently speeds up the leaching process. Therefore, it is possible to measure nitrite ions at room temperature by changing the size of plasmonic NPs and subsequently producing measurable signals, including spectral and color changes. Due to the easy synthesis of spherical NPs, which are the most thermodynamically and kinetically favorable morphology, this probe is simple and cost‐effective with no need for well‐trained personnel. Under optimal conditions, a linear range was obtained from 10.0 to 80.0 μmol L −1 with a limit of detection as low as 0.13 μmol L −1 . Nitrate was measured indirectly and after reduction to nitrite by zinc powder. The linear range obtained for nitrate was 1.2 to 3.5 mmol L −1 and the detection limit was as low as 96.2 μmol L −1 . Furthermore, the designed probe could determine nitrite and nitrate in environmental, food, and biological s les with high quantitative accuracy. Due to its simplicity and high accuracy, this method can reliably smooth the problems caused by other laboratory methods in measuring nitrite and nitrate.
Publisher: Informa UK Limited
Date: 13-05-2023
Publisher: Springer Science and Business Media LLC
Date: 29-07-2014
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1AY01117K
Abstract: Thiourea as a sulfur-containing compound accelerates the etching rate of gold nanorods (AuNRs) leading to a wide color change from brown to light brown, green, blue, purple, pink, and colorless.
Publisher: Elsevier BV
Date: 10-2020
Publisher: Springer Science and Business Media LLC
Date: 2014
Publisher: CSIRO Publishing
Date: 12-05-2021
DOI: 10.1071/SR20308
Abstract: Little is known about the effects of drying–rewetting cycles on phosphorus (P) speciation in paddy soils with organic amendments incorporated. In this study, the responses of microbial biomass P (MBP), alkaline phosphatase activity, inorganic pyrophosphatase activity, soluble P, available P (AP), organic P, total P (TP), organic carbon (C), and C:P ratio to two types of the organic amendment (Azolla compost and rice straw) under drying–rewetting cycles were evaluated in a 60-day incubation experiment. The experimental treatments follow: amendment factor at three levels of (i) unamended control (NT), (ii) soil amended with Azolla compost (AC), and (iii) soil amended with rice straw (RS) and irrigation regimes factor at three levels of (i) constant soil moisture in a waterlogged state, (ii) mild drying–rewetting (MDR) (moisture reduced to 100% water-holding capacity (WHC) at alternate periods), and (iii) severe drying–rewetting (SDR) (moisture reduced to 70% WHC at alternate periods). Soil drying–rewetting increased the contents of AP and soluble P and the activities of alkaline phosphatase and inorganic pyrophosphatase, but decreased contents of organic P and organic C. The contents of AP and TP in organic treated soils were significantly higher than those in non-treated soils (P 0.01). Application of AC and RS amendments increased organic P content (45% and 46%, respectively) and also further intensified the increase in AP content (63% and 37%, respectively), soluble P content (3.7- and 2.7-fold, respectively), and MBP content (6.0- and 1.6-fold, respectively) compared to control. Rice straw addition combined with MDR also increased the C:P ratio 30 days after incubation. The MBP as a microbial factor had the highest correlation with other measured indices. The MDR along with organic matter (RS and AC) caused a continuous increase in the concentration of P species. In short, the best soil quality in terms of P supply in paddy soils was achieved by regulating soil drying–rewetting cycles along with the use of appropriate timing of organic amendments.
Publisher: Informa UK Limited
Date: 08-09-2017
Publisher: Springer Science and Business Media LLC
Date: 02-01-2019
Publisher: Springer Science and Business Media LLC
Date: 16-05-2020
Publisher: Springer Science and Business Media LLC
Date: 27-10-2020
No related grants have been discovered for Hossein Mirseyed Hosseini.