Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Jacobus (Koos) Frederick van Staden"'
Autor:
Raluca-Ioana Stefan-van Staden, Ergün Yukmel Rasit, Damaris-Cristina Gheorghe, Jacobus (Koos) Frederick van Staden
Publikováno v:
ACS Omega, Vol 9, Iss 9, Pp 10440-10444 (2024)
Externí odkaz:
https://doaj.org/article/e8eaa0bad4f5486ea855c2f7fdff7d5b
Publikováno v:
Electrochemistry Communications, Vol 157, Iss , Pp 107625- (2023)
Fusidic acid and betamethasone are two pharmaceutically active compounds found in topical dosage forms. Sometimes, they can unintentionally wind up in surface water via skin washing. Therefore, a stochastic platform based on a type of calix[4]arene a
Externí odkaz:
https://doaj.org/article/44a86fe15ce04b5ba0c98fc136f15847
Autor:
Gianina Dobrescu, Ramona Georgescu-State, Florica Papa, Jacobus (Koos) Frederick van Staden, Razvan Nicolae State
Publikováno v:
Fractal and Fractional, Vol 8, Iss 4, p 205 (2024)
The fractal properties of carbon paste electrodes (CPEs) and carbon paste electrodes modified with ionic liquid (IL), AuTiO2/graphene oxide, and IL/AuTiO2/graphene oxide were investigated using scanning electron microscopy (SEM), and cyclic voltammet
Externí odkaz:
https://doaj.org/article/4caae223fd674056808b2007216df15e
Publikováno v:
Chemistry, Vol 4, Iss 3, Pp 1016-1027 (2022)
The photodynamic therapy (PDT) represents a non-invasive method with good results in the treatment of superficial tumors. PDT is based on a combination of two factors, namely, a non-toxic photosensitizing molecule and a light source; the photosensiti
Externí odkaz:
https://doaj.org/article/2920702d18ca4b3b8eca5cb4082b2a5b
Autor:
Bianca-Maria Tuchiu, Raluca-Ioana Stefan-van Staden, Jacobus (Koos) Frederick van Staden, Hassan Y. Aboul-Enein
Publikováno v:
Chemosensors, Vol 11, Iss 8, p 446 (2023)
A disposable stochastic platform based on calix [6]arene modified multi-walled carbon nanotubes-gold nanoparticles screen-printed electrode has been developed for the simultaneous determination of calcipotriol and betamethasone. For both analytes, ve
Externí odkaz:
https://doaj.org/article/d50a4e343773429fa21b038ea0bae775
Publikováno v:
Electrochemical Science Advances, Vol 2, Iss 1, Pp n/a-n/a (2022)
Abstract This review is presenting the design and performance of some electrochemical sensors used for the determination of L‐dopa in real samples as reported in a series of relevant scientific papers published in the past 5 years. L‐dopa was int
Externí odkaz:
https://doaj.org/article/9670aab5a53a4ebb897b6022c764d47f
Autor:
Raluca-Ioana Stefan-van Staden, Irina-Alina Chera-Anghel, Damaris-Cristina Gheorghe, Jacobus (Koos) Frederick van Staden, Marius Badulescu
Publikováno v:
Sensors, Vol 23, Iss 1, p 314 (2022)
Since the determination of the high toxicity of bisphenol A, alternative structures for bisphenols have been synthesized, resulting in bisphenols C, E, F, S, and Z. These bisphenols have replaced bisphenol A in plastic bottles, toys, and cans used fo
Externí odkaz:
https://doaj.org/article/c54ede52ba9c422a878c2764a1e4e854
Gold Nanoparticles/Nanographene-Based 3D Sensors Integrated in Mini-Platforms for Thiamine Detection
Autor:
Damaris-Cristina Gheorghe, Jacobus (Koos) Frederick van Staden, Raluca-Ioana Stefan-van Staden, Paula Sfirloaga
Publikováno v:
Sensors, Vol 23, Iss 1, p 344 (2022)
Vitamins are essential for sustaining daily activities and perform crucial roles in metabolism, such as preventing vascular events and delaying the development of diabetic nephropathy. The ultrasensitive assessment of thiamine in foods is required fo
Externí odkaz:
https://doaj.org/article/feddb6c3f2db42a58084bfb5fde36f05
Publikováno v:
Micromachines, Vol 13, Iss 10, p 1707 (2022)
The primary benefit of using sulfites as a food additive is their antimicrobial and antioxidant properties, which stop fungi and bacteria from growing in a variety of foods. The application of analytical methods is necessary to ensure food quality co
Externí odkaz:
https://doaj.org/article/52d0cae3ac33402b956539b3180f4989
Autor:
Raluca-Ioana Stefan-van Staden, Oana-Raluca Musat, Damaris-Cristina Gheorghe, Ruxandra-Maria Ilie-Mihai, Jacobus (Koos) Frederick van Staden
Publikováno v:
Nanomaterials, Vol 12, Iss 18, p 3111 (2022)
Two microsensors obtained by the physical immobilization of 5,10,15,20-tetraphenyl-21H,23H-porphine (TPP) and 5,10,15,20-tetrakis (pentafluorophenyl chloride)-21H,23H-iron (III) porphyrin (Fe(TPFPP)Cl) in carbon nanopowder decorated with gold nanopar
Externí odkaz:
https://doaj.org/article/40f5c28d1039443ba73a700b9ec261f4