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Fabrication of the carbon paste electrode modified with Trametes versicolor laccase immobilized on carboxyl functionalized multi-walled carbon nanotubes and its application for measurement of dopamine.
Moradpour H, Forootanfar H, Ameri A, Beitollahi H. Moradpour H, et al. Int J Biol Macromol. 2024 Dec;283(Pt 4):137891. doi: 10.1016/j.ijbiomac.2024.137891. Epub 2024 Nov 19. Int J Biol Macromol. 2024. PMID: 39571857
According to Plackett-Burman statistical design, the optimum conditions showed at 5 mg/mL of MWCNTs-COOH, 25 mM phosphate buffer (pH 6.0), sonication time for 15 min, 2.5 U/mg of enzyme concentration, immobilization time for 4 h at 4 C, and rotation at 100 rpm. At these c …
According to Plackett-Burman statistical design, the optimum conditions showed at 5 mg/mL of MWCNTs-COOH, 25 mM phosphate buffer (pH 6.0), s …
Application of antibody-nanogold-ionic liquid-carbon paste electrode for sensitive electrochemical immunoassay of thyroid-stimulating hormone.
Beitollahi H, Ivari SG, Torkzadeh-Mahani M. Beitollahi H, et al. Biosens Bioelectron. 2018 Jul 1;110:97-102. doi: 10.1016/j.bios.2018.03.003. Epub 2018 Mar 6. Biosens Bioelectron. 2018. PMID: 29604521
This signal is generated by the reaction between O-aminophenol (OAP) and H(2)O(2) catalyzed by HRP. The proposed immunosensor is able to measure the concentration of TSH in a linear range between 0.2 and 90.0 ng/mL with a detection limit 0.1 0.02 ng/mL. ...
This signal is generated by the reaction between O-aminophenol (OAP) and H(2)O(2) catalyzed by HRP. The proposed immunosensor is able …
Amperometric immunosensor for prolactin hormone measurement using antibodies loaded on a nano-Au monolayer modified ionic liquid carbon paste electrode.
Beitollahi H, Nekooei S, Torkzadeh-Mahani M. Beitollahi H, et al. Talanta. 2018 Oct 1;188:701-707. doi: 10.1016/j.talanta.2018.06.044. Epub 2018 Jun 15. Talanta. 2018. PMID: 30029435
The reaction between O-aminophenol (OAP) and H(2)O(2) which is catalyzed by labeled HRP on the sandwich immunosensor generate a signal in differential pulse voltammetry (DPV) that is used to determine the concentration of prolactin. ...
The reaction between O-aminophenol (OAP) and H(2)O(2) which is catalyzed by labeled HRP on the sandwich immunosensor generate a signa …
Radiological studies in the hot spring region of Mahallat, Central Iran.
Beitollahi M, Ghiassi-Nejad M, Esmaeli A, Dunker R. Beitollahi M, et al. Radiat Prot Dosimetry. 2007;123(4):505-8. doi: 10.1093/rpd/ncl524. Epub 2006 Dec 13. Radiat Prot Dosimetry. 2007. PMID: 17166871
Radiation levels above that of normal background ( approximately 100 nGy h(-1)) were mainly limited to the Quaternary travertine formations in the vicinity of the hot springs. ...
Radiation levels above that of normal background ( approximately 100 nGy h(-1)) were mainly limited to the Quaternary travertine form …
Effect of the mechanical activation on size reduction of crystalline acetaminophen drug particles.
Biazar E, Beitollahi A, Rezayat SM, Forati T, Asefnejad A, Rahimi M, Zeinali R, Ardeshir M, Hatamjafari F, Sahebalzamani A, Heidari M. Biazar E, et al. Int J Nanomedicine. 2009;4:283-7. doi: 10.2147/ijn.s5895. Epub 2009 Dec 29. Int J Nanomedicine. 2009. PMID: 20054432 Free PMC article.
In this study, we investigated the size reduction influence of the acetaminophen (C(8)H(9)O(2)N) particles by mechanical activation using a dry ball mill. The activated samples with the average size of 1 microm were then investigated in different time periods with the infr …
In this study, we investigated the size reduction influence of the acetaminophen (C(8)H(9)O(2)N) particles by mechanical activation u …