Waste management: Environmental strategies and practices

In the face of escalating environmental challenges, the management of domestic and industrial waste emerges as a critical area of concern and action. The scientific article “Waste Management: Environmental Strategies and Practices” delves into the complex dynamics of waste management systems, exploring innovative strategies and practices that aim to mitigate environmental impact, promote recycling, and transition towards a circular economy. It begins by outlining the current global waste management crisis, characterized by unsustainable disposal practices and escalating volumes of waste. The article then transitions to a comprehensive analysis of various waste management models that incorporate ecological principles, such as waste minimization, reuse, and resource recovery. Through a multidisciplinary approach, it evaluates the effectiveness of these models in different geopolitical and socio-economic contexts, highlighting the importance of adaptability and community engagement. The study also introduces cutting-edge technologies and methodologies in waste processing and disposal, emphasizing their potential to reduce carbon footprint, conserve natural resources, and enhance environmental sustainability. Furthermore, the article discusses the role of policy frameworks, public awareness, and education in fostering a more responsible and efficient waste management culture. By providing a holistic overview of environmental strategies and practices in waste management, this article contributes valuable insights to the ongoing discourse on ecological conservation and sustainability

Moving forward: the future of blockchain technology in agriculture

This article examines the application of blockchain technology in agriculture, a promising approach to enhance efficiency and transparency. By reviewing existing literature, conducting a study, and analyzing findings, we aim to demonstrate the effectiveness of blockchain in agriculture. Our discussion offers a comprehensive understanding of how blockchain technology can revolutionize agricultural practices and supply chains, providing a robust system for tracking and verifying transactions, improving efficiency, and fostering trust among stakeholders

Synthesis and characterization of new-type soluble β-substituted zinc phthalocyanine derivative of clofoctol

In this work, we have described the synthesis and characterization of novel zinc (II) phthalocyanine bearing four 2-(2,4-dichloro-benzyl)-4-(1,1,3,3-tetramethyl-butyl)-phenoxy substituents on the peripheral positions. The compound was characterized by elemental analysis and different spectroscopic techniques, such as FT-IR, 1H NMR, MALDI-TOF, and UV-Vis. The Zn (II) phthalocyanine shows excellent solubility in organic solvents such as dichloromethane (DCM), n-hexane, chloroform, tetrahydrofuran (THF), and toluene. Photochemical and electrochemical characterizations of the complex were performed by UV-Vis, fluorescence spectroscopy, and cyclic voltammetry. Its good solubility allows a direct deposition of this compound as film, which has been tested as a solid-state sensing material in gravimetric chemical sensors for gas detection, and the obtained results indicate its potential for qualitative discrimination and quantitative assessment of various volatile organic compounds, among them methanol, n-hexane, triethylamine (TEA), toluene and DCM, in a wide concentration range

Corrole Polymers as a Novel Materials for Room Temperature Resistive Gas Sensors

Corroles, a family of contracted porphyrinoids, exhibit broad chemical interactions, undergo straightforward synthetic preparation and functionalization, and enable versatile thin film deposition. These attributes render them promising candidates for use in chemical sensors. Nevertheless, the inherently limited conductivity of corrole solid films constrains their application in mass and optical sensors. Despite this impediment, there is a great interest in matching the sensitive properties of the corrole with the features of facile miniaturization and integration into low-cost electronic circuits. This work explores the possibility of directly and simply depositing conductometric polymeric films of [5,10,15-(4-aminophenyl)corrolato] copper onto interdigitated electrodes. Remarkably, the electropolymerization protocol allows the selection of the semiconductive nature (p- or n-type) of these films, yielding two distinct sensor types: the former exhibiting high sensitivity and selectivity toward nitrogen monoxide (NO) with a slight influence of relative humidity and the other manifesting a broad spectrum of sensitivities. This breakthrough lays the foundation for developing miniaturized conductometric gas detectors, nonlinear conductometric sensing elements, and electronic nose platforms based on polycorroles

Advances in optical sensors for persistent organic pollutant environmental monitoring

Optical chemical sensors are widely applied in many fields of modern analytical practice, due to their simplicity in preparation and signal acquisition, low costs, and fast response time. Moreover, the construction of most modern optical sensors requires neither wire connections with the detector nor sophisticated and energy-consuming hardware, enabling wireless sensor development for a fast, in-field and online analysis. In this review, the last five years of progress (from 2017 to 2021) in the field of optical chemical sensors development for persistent organic pollutants (POPs) is provided. The operating mechanisms, the transduction principles and the types of sensing materials employed in single selective optical sensors and in multisensory systems are reviewed. The selected examples of optical sensors applications are reported to demonstrate the benefits and drawbacks of optical chemical sensor use for POPs assessment

EBB 332-4 - TEMBIKAR & KACA NOV 05.

5,10,15,20-Tetraferrocenyl porphyrin, H(2)TFcP, a simple example of a donor-acceptor system, was tested as ligand for the development of a novel multi-transduction chemical sensors aimed at the determination of transition metal ions. The fluorescence energy transfer between ferrocene donor and porphyrin acceptor sub-units was considered. The simultaneously measured optical and potentiometric responses of solvent polymeric membranes based on H(2)TFcP permitted the detection of lead ions in sample solutions, in the concentration range from 2.7 x 10(-7) to 3.0 x 10(-3) M. The detection limit of lead determination was 0.27 mu M, low enough to perform the direct analysis of Pb2+ in natural waters

Happiness around the world: A combined etic-emic approach across 63 countries.

What does it mean to be happy? The vast majority of cross-cultural studies on happiness have employed a Western-origin, or "WEIRD" measure of happiness that conceptualizes it as a self-centered (or "independent"), high-arousal emotion. However, research from Eastern cultures, particularly Japan, conceptualizes happiness as including an interpersonal aspect emphasizing harmony and connectedness to others. Following a combined emic-etic approach (Cheung, van de Vijver & Leong, 2011), we assessed the cross-cultural applicability of a measure of independent happiness developed in the US (Subjective Happiness Scale; Lyubomirsky & Lepper, 1999) and a measure of interdependent happiness developed in Japan (Interdependent Happiness Scale; Hitokoto & Uchida, 2015), with data from 63 countries representing 7 sociocultural regions. Results indicate that the schema of independent happiness was more coherent in more WEIRD countries. In contrast, the coherence of interdependent happiness was unrelated to a country's "WEIRD-ness." Reliabilities of both happiness measures were lowest in African and Middle Eastern countries, suggesting these two conceptualizations of happiness may not be globally comprehensive. Overall, while the two measures had many similar correlates and properties, the self-focused concept of independent happiness is "WEIRD-er" than interdependent happiness, suggesting cross-cultural researchers should attend to both conceptualizations