Jaime Ramirez Castillo

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Amperometric biosensors for glucose, ethanol, and biogenic amines (putrescine) were constructed using oxidase/peroxidase bienzyme systems. The H(2)O(2) produced by the oxidase in reaction with its substrate is converted into a measurable signal via a novel peroxidase purified from sweet potato peels. All developed biosensors are based on redox hydrogels(More)
This paper presents a conceptual cloud-based framework with virtual and augmented reality support named "CRehab" for the management of rehabilitation processes. Studies show that rehabilitation wards, staff, patients, and families need systems that tackle administration, personal communication, and patient motivation processes effectively. To this end,(More)
The simultaneous detection of nitric oxide and glutamate using an array of individually addressable electrodes, in which the individual electrodes in the array were suitably modified with a highly sensitive nitric oxide sensing chemistry or a glutamate oxidase/redox hydrogel-based glutamate biosensor is presented. In a sequence of modification steps one of(More)
There is an increasing interest in new strategies for replacing animal tests in research. The use of cell cultures and integrated electrodes is seen as a promising alternative that could potentially solve this problem. In this work, we present a L-glutamate sensor based on a bienzyme redox hydrogel, capable of detecting the release of this excitatory(More)
An ex vivo system for simultaneous detection of nitric oxide (NO) and L-glutamate using integrated dual 250 microm platinum disk electrodes modified individually with suitable sensing chemistries has been developed. One of the sensors was coated with an electrocatalytic layer of Ni tetrasulfonate phthalocyanine tetrasodium salt (Ni-TSPc) covered by second(More)
In this article we present the results of a pilot programme for student placement on the university, comprised of a preparation course, the GCE Ordinary level test in Computing, which students perform afterwards as a placement test, and a post-course questionnaire. The aim of the research programme is to identify weaknesses in the student placement tests(More)
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