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Food, water, and sleep form the foundation of human needs, all of which are indispensable. However, unlike sleep, food and water have historically been beyond direct human control. Since ancient times, hunter-gatherers have migrated in search of these essential resources. The advent of agriculture marked a turning point, allowing humans …

Environmental contamination by toxic metals—such as Pb²⁺, Cr³⁺, and Hg²⁺—and organometallic species like monomethylmercury (MeHg) presents one of the most persistent global challenges due to their bioaccumulation, long-term toxicity, and resistance to degradation. This thesis addresses this critical issue through a multidisciplinary approach combining nanotechnology, environmental chemistry, biosensor engineering, and …

The rapid evolution of sensor technologies, particularly within the Internet of Things (IoT) domain, has led to an era dominated by massive real-time data flows. This transition resulted in the need for novel data processing methodologies that facilitate the shift from traditional offline batch analytics to agile real-time predictions and …

In recent decades, hydrogen peroxide (H 2 O 2 ) has attracted considerable attention as a n omnipresent analyte, finding applications in clinical studies/diagnos is , biology, environmental protection, atmospheric studies, homeland security, and various analytical methodologies . This dissertation provides valuable insights into three different types of electrochemical sensors …

This thesis focuses on the information dynamics of children’s melody and, more specifically, on modeling children’s perception of melodic surface. The topic of children’s melody has not received much attention in the past, and there are currently no clear definitions of what exactly a “children’s melody” is. As neither children’s …

Time-of-flight secondary ion mass spectrometry using MeV ions (MeV ToF SIMS) has been around for a few decades as a reliable, surface-sensitive method for the detection of molecular ions having masses up to 1000 Da. It provides excellent lateral resolution of a few μm for imaging of organic samples, making …

An everyday awareness of the presence of harmful chemicals around us has led to the development of a way to report overexposure through the reactions of these compounds with specifically prepared materials - sensory elements. In this doctoral dissertation we focused on the electrochemical synthesis (electropolymerization) of conductive polymer polyaniline …

Plant viruses are very important plant pathogens, causing economic losses by infecting cultivated plants, causing diseases, and consequently reducing crop quality and quantity. In recent years, the development of high throughput sequencing (HTS) technologies has dramatically broadened the possibilities for plant virus research and diagnostics, enabling the discovery of new …

The use of low-cost sensing technologies increasingly used in participatory environmental health studies brings both opportunities and challenges. While previous research mostly focused on technical aspects, this thesis brings participants to the foreground and articulates their experiences. It aims to evaluate if low-cost sensing technologies are fitfor- purpose in environmental …

Although large research efforts on web application security have been invested for more than a decade, the security of web applications is still a challenging problem. The main focus of the cybersecurity community has been to make operating systems and communication networks more secure and harder for attackers to penetrate. …