Graduate University of Advanced Technology

About: Graduate University of Advanced Technology is a education organization based out in Kerman, Iran. It is known for research contribution in the topics: Carbon paste electrode & Electrochemical gas sensor. The organization has 890 authors who have published 2169 publications receiving 31027 citations.

Electrochemical determination of hydrazine using a ZrO2 nanoparticles-modified carbon paste electrode

Abstract: In the present paper, the use of a carbon paste electrode modified by 3-(4'-amino-3'-hydroxy-biphenyl-4-yl)-acrylic acid (3,4'AA) and ZrO2 nanoparticles prepared by a simple and rapid method was described. The heterogeneous electron transfer properties of (3,4'AA) coupled to ZrO2 nanoparticles at the carbon paste electrode were investigated using cyclic voltammetry, chronoamperometry, and square wave voltammetry in aqueous buffer solutions. Under the optimized conditions, the square wave voltammetric peak currents of hydrazine increased linearly with hydrazine concentrations in the range of 2.5 × 10(-8) to 5.0 × 10(-5) M, and detection limit of 14 nM was obtained for hydrazine. Finally, this modified electrode was used for the determination of hydrazine in water samples, using standard addition method.

Different Electrochemical Sensors for Determination of Dopamine as Neurotransmitter in Mixed and Clinical Samples: A Review

Abstract: Dopamine (DA) is one of the most important catecholamine neurotransmitters in the human central nervous system in the brain and plays a key role in the functioning of the renal, hormonal, and cardiovascular systems. Abnormal levels of dopamine are related to neurological disorders, such as schizophrenia and Parkinson’s disease and the control and fluctuations of the amount of dopamine are extremely important in monitoring with analytical systems in the human brain. This review covers the different electrochemical sensors for the determination of dopamine as neurotransmitter and points out the advantages and disadvantages of them. The interaction between the functional groups of the sensor’s material and the analyte molecule is discussed, as it is essential for the analytical characteristics obtained. The analytical performances of the voltammetric or amperometric chemical and biochemical sensors (linear range of analytical response, sensitivity etc) are highlightened. The numerous applications of DA electrochemical sensors in fields like pharmaceutical or clinical analysis, where DA represents a key analyte, are also presented.

Response of tomato plants to interaction effects of magnetic (Fe3O4) nanoparticles and cadmium stress

Abstract: Research on nanotechnology as an emerging discipline has advanced several branches of technology. Although iron is considered as an essential element for plant growth, its role in mitigating abioti...

Climate Change is a Major Problem for Biodiversity Conservation: A Systematic Review of Recent Studies in Iran

Abstract: Climate change has been identified as one of the most important and immediate threats to biodiversity. In this study, we reviewed published papers about the impacts of climate change on Iran’s biodiversity since 2014. We found that among the 37 studied species, 30 species will lose at least some parts of their distribution ranges. However, the distribution of seven species will increase. Climate change will have negative impacts on 81 percent of the studied species thus, it is a major problem for biodiversity conservation in Iran. We suggest that determining the effectiveness of Iran’s protected areas for conservation of biodiversity, and ensuring their connectivity under current and future climatic conditions should be prioritized for future research in Iran.