Article
Biochemistry & Molecular Biology
Lucia Balejcikova, Karel Saksl, Jozef Kovac, Anne Martel, Vasil M. Garamus, Mikhail V. Avdeev, Viktor I. Petrenko, Laszlo Almasy, Peter Kopcansky
Summary: Ferritin, a protein complex responsible for iron storage in organisms, has different iron core compositions related to specific living requirements and health states. Magnetoferritin, a synthetic derivative, serves as a model system with unusual iron phase structures. Improving synthesis technology can enhance physicochemical parameters of the system for applications.
Review
Engineering, Environmental
Xiong-Xin Peng, Shuang Gai, Kui Cheng, Fan Yang
Summary: This review introduces the redox activity of humic substances (HS) for the remediation of environmental pollutants, including the treatment of inorganic and organic pollutants. The redox reactions between HS and inorganic pollutants reduce their toxicity and mobilization, while the photocatalytic activity of HS accelerates the degradation of organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Yashfa Tanveer, Saman Jahangir, Zafar Abbas Shah, Humaira Yasmin, Asia Nosheen, Muhammad Nadeem Hassan, Noshin Illyas, Andrzej Bajguz, Mohamed A. El-Sheikh, Parvaiz Ahmad
Summary: Cadmium (Cd) toxicity hinders plant growth, but treatment with biostimulant and zinc oxide nanoparticles (ZnPs) improves biomass, chlorophyll content, and antioxidants in maize. The combination of biostimulant and ZnPs shows synergistic effects in Cd remediation, enhancing nutrient uptake and reducing structural cell damage. Zinc oxide positively regulates various proteins involved in energy generation, channel formation, localization, and stress response in maize, suggesting its ideal role as a protein interactor in plant physiology.
ENVIRONMENTAL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Kim Hoong Ng
Summary: The study demonstrated the thermodynamic feasibility of reducing SO2 into elemental S using a Ca-based redox agent derived from chicken eggshells. Experiment results confirmed the thermodynamic analysis.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Pharmacology & Pharmacy
Caroline De Souza Pereira, Helenita Costa Quadros, Samuel Yaw Aboagye, Diana Fontinha, Sarah D'Alessandro, Margaret Elizabeth Byrne, Mathieu Gendrot, Isabelle Fonta, Joel Mosnier, Diogo Rodrigo M. Moreira, Nicoletta Basilico, David. L. L. Williams, Miguel Prudencio, Bruno Pradines, Maribel Navarro
Summary: Hybrid-based drugs linked through a transition metal, such as the novel compound [AuAQPQ]PF6, show strong and effective antiplasmodial activity against multiple stages of the Plasmodium life cycle. The compound's mechanism involves inhibiting beta-hematin formation and enzymatic activity of thioredoxin reductases.
Article
Environmental Sciences
Yanping Ji, Jiang Xu, Lizhong Zhu
Summary: The authors measured the redox potential of simulated laterites under various soil conditions and quantified the impacts of soil pH, organic carbon, and iron speciation on iron activity. By integrating these factors into the formula, they significantly improved the accuracy of Eh predictions. The developed model was validated with natural laterites and showed promising results for predicting the redox behavior of contaminants in soils.
Article
Biotechnology & Applied Microbiology
Zahra Alijani, Jahanshir Amini, Morahem Ashengroph, Bahman Bahramnejad
Summary: The study identified four endophytic bacterial strains as Bacillus spp. and Pseudomonas aeruginosa, which showed biocontrol effects against the causal agent of strawberry anthracnose. The bacteria reduced the growth of the pathogen and detoxified its toxin, leading to a decrease in disease severity on strawberry fruits and seedlings. Spectral analysis showed that different bacterial strains had varying degrees of toxin absorption coefficients, corresponding with bioassay results.
BIOLOGICAL CONTROL
(2021)
Article
Engineering, Environmental
Khadega A. Al-Maqdi, Nada Elmerhi, Ahmed Alzamly, Iltaf Shah, Syed Salman Ashraf
Summary: The increase in global population has led to a rapid increase in pollution problems worldwide. One of these problems is the presence of emerging pollutants, which are human-made organic compounds found in various water bodies. To address this issue, researchers have developed hybrid nanoflowers embedded with laccase enzymes, which have shown high efficiency in degrading a range of emerging pollutants. The immobilization of laccase on hybrid nanoflowers has the potential for multiple degradation cycles and could be used in the scaling up of remediation processes.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Plant Sciences
Calvin Eddington Moyo, Farida Minibayeva, Christiane Liers, Richard Peter Beckett
Summary: The occurrence of oxidoreductase enzymes such as tyrosinase, laccase, heme peroxidase, and quinone reductase in lichens was demonstrated, with the latter showing varying activities among different lichen species. Despite the belief that these enzymes play a role in extracellular hydroxyl radical production, this study did not find a correlation between enzyme activities and hydroxyl radical production rates. Possible roles for quinone reductase in lichen biology were discussed.
Article
Engineering, Environmental
Rezvan Karimi, Fakhri Yousefi, Mehrorang Ghaedi, Kheibar Dashtian, Ghulam Yasin
Summary: This study presents a polyaniline-coated anodized stainless-steel mesh supported n-n heterojunction of CdS nanosphere-Co3S4 nanowalls photoanode for solar energy conversion. The photoanode demonstrates excellent performance in Cr(VI) detoxification and N2 fixation processes. Experimental and electrochemical analysis reveal a possible mechanism involving 3-electron-coupled Cr(VI) reduction and 6-electron-coupled N2 reduction pathways. The PEC exhibits considerable electrocatalytic performance with high ammonia yield and Cr(VI) reduction efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Veterinary Sciences
Fei Wang, Yi Chen, Huilong Hu, Xinyi Liu, Yihui Wang, Muhammad Kashif Saleemi, Cheng He, Md Atiqul Haque
Summary: The study demonstrated that PCA is a promising detoxification agent to reduce FB1 contamination in poultry feed, protecting chicken population from toxin exposure and reducing mycotoxin residues in consumer food products.
FRONTIERS IN VETERINARY SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Hong-Hyun Kim, Jin Young Seo, Heejeong Kim, Sangjo Jeong, Kyung-Youl Baek, Jongsik Kim, Sein Min, Sang Hoon Kim, Keunhong Jeong
Summary: Metal organic frameworks (MOFs), especially UiO-66 and its variant UiO-66S, show promising potential for gas-phase decontamination of both nerve agents and blister agents. The gas-phase chemical adsorption and decomposition of 2-chloroethyl ethyl sulfide (2-CEES) by UiO-66S have been demonstrated for the first time, with an estimated half-life of 1.34 hours, the highest reported value for an MOF in such conditions. This study provides important insights into the use of UiO-66S as a future decontaminant for toxic chemical agents.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yuseong Jang, Jinkyu Lee, Jinsung Mok, Junhyeong Park, Seung Yoon Shin, Soo-Yeon Lee
Summary: This study investigates the importance of post-deposition oxidation of the IGZO surface in enhancing interface quality and highlights the benefits of introducing fluorine. It suggests that the presence of fluorine effectively alleviates the chemical reduction reaction, resulting in a defect-passivated and sharp interface.
Article
Nanoscience & Nanotechnology
Hana Stepankova, Marcin Swiatkowski, Rafal Kruszynski, Pavel Svec, Hana Michalkova, Vendula Smolikova, Andrea Ridoskova, Zbynek Splichal, Petr Michalek, Lukas Richtera, Pavel Kopel, Vojtech Adam, Zbynek Heger, Simona Rex
Summary: This study focuses on the potential use of coordination compound-based zinc oxide nanoparticles for treating triple negative breast cancer cells. The nanoparticles showed selective cytotoxicity towards TNBrCa cells, affecting their metabolism and morphology leading to cell death. The morphology, size, and zinc content of the nanoparticles appear to be crucial properties for their future therapeutic potential in TNBrCa.
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2021)
Article
Environmental Sciences
Bei Zhao, Zhanxue Sun, Yajie Liu
Summary: This review covers various in-situ remediation techniques for nitrate in groundwater, discussing their principles, applications, latest progress, and challenges. Factors influencing the efficiency of in-situ nitrate remediation are summarized, along with the outlook for future development of this remediation technology.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
M. Stelmakova, M. Streckova, R. Orinakova, A. Guboova, M. Balaz, V Girman, E. Mudra, C. Bera, M. Batkova
Summary: CFs decorated with Co2P nanoparticles and carbon nanotubes were prepared using needle-less electrospinning technique. The catalytic activity of Co2P nanoparticles and growth of carbon nanotubes were monitored under different sintering conditions, revealing the influence of heat exposure time on nanotube growth and morphology. SEM and Raman spectroscopy analysis showed that closure of the sintering space led to the formation of carbon nanotubes with smaller diameters and improved electrocatalytic activity.
Article
Crystallography
Isadora Maria Oliveira Anicio Costa, Marianna Batkova, Ivan Batko, Abdelkader Benabou, Christophe Mesplont, Jean-Bernard Vogt
Summary: This paper investigates the relationship between microstructure, mechanical properties, and electromagnetic behavior of carbon steel wires. The study reveals that the electromagnetic properties are primarily influenced by the volume fraction, morphology, and distribution of the cementite phase. An increase in carbon concentration leads to higher electrical conductivity and magnetic permeability. Additionally, the interfaces of cementite phase act as physical barriers for dislocation slip in ferrite. A careful interpretation of the electrical and magnetic responses is crucial for quality control and process monitoring of carbon steel wires.
Article
Quantum Science & Technology
I. I. Nebola, A. F. Katanytsia, I. M. Shkyrta, Yu O. Pal, I. P. Studenyak, M. Timko, P. Kopcansky
Summary: This paper is devoted to calculating the phonon spectra of argyrodite family crystals. The study reveals that the different configurations of Cu and Ag atoms do not have a significant effect on the phonon spectra, suggesting the possibility of a jumping mechanism of superionic conductivity in these crystals in the high-temperature phase.
SEMICONDUCTOR PHYSICS QUANTUM ELECTRONICS & OPTOELECTRONICS
(2022)
Article
Optics
Koryun B. Oganesyan, Krzysztof Dzierzega, Peter Kopcansky, Ashot H. Gevorgyan, Milan Timko
Summary: The polarization plane rotation angle of a probe signal in a plasma is calculated, and the estimates of the residual gas average density and the average magnitude of the magnetic field in a cesium plasma based on the effects of Faraday and Cotton-Mouton in a probe laser field have been found.
LASER PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Peter Bury, Marek Vevericik, Frantisek Cernobila, Natalia Tomasovicova, Katarina Zakut'anska, Peter Kopcansky, Milan Timko, Marketa Jarosova
Summary: The effect of magnetic nanoparticles size and concentration on nematic liquid crystal behavior in a magnetic field was studied. The magneto-optical investigation revealed structural changes induced by a weak magnetic field, as well as the coupling between magnetic moments of nanoparticles and the director of the liquid crystal. Experimental measurements demonstrated the influence of nanoparticle size and concentration on the behavior and stability of the liquid crystal compounds.
Article
Chemistry, Physical
M. Streckova, O. Petrus, A. Guboova, R. Orinakova, V. Girman, C. Bera, M. Batkova, M. Balaz, J. Shepa, J. Dusza
Summary: This study evaluated the effectiveness of nanoscale NiCoP bimetallic phosphide particles incorporated into carbon fibers (CF) and found them to be the most active materials suitable for alkaline and proton exchange membrane electrolysis environments. NiCoP CF showed high electrocatalytic activity and has potential for practical application in water electrolysis energy conversion processes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Crystallography
Peter Bury, Marek Vevericik, Frantisek Cernobila, Natalia Tomasovicova, Milan Timko, Peter Kopcansky, Filippo Agresti, Simona Barison
Summary: A composite ferronematic system based on the nematic liquid crystal E7, doped with goethite magnetic nanoparticles, was investigated. The influence of magnetic nanoparticles on structural changes of ferronematic liquid crystals was studied using surface acoustic waves and the magneto-optical effect. The experimental results confirmed the decrease in threshold field and increase in transition temperature with increasing volume fraction of nanoparticles. The effect of nanoparticles' concentration on both total structural changes and magneto-optical behavior was also observed.
Article
Chemistry, Physical
Michal Rajnak, Bystrik Dolnik, Katarina Paulovicova, Roman Cimbala, Peter Kopcansky, Milan Timko, Kinnari Parekh, R. V. Upadhyay
Summary: The low-frequency dielectric response of a ferrofluid based on transformer oil and MnZn ferrite nanoparticles in a gradient magnetic field is studied. The dielectric spectra show a relaxation ascribed to nanoparticle interfacial polarization. The magnetic field causes a decrease in the dielectric permittivity and a shift of the relaxation towards higher frequencies.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Analytical
Vladimira Tomeckova, Sona Tkacikova, Ivan Talian, Gabriela Fabriciova, Andrej Hovan, Daria Kondrakhova, Katarina Zakutanska, Miriama Skirkova, Vladimir Komanicky, Natalia Tomasovicova
Summary: A pilot analysis of tear fluid from MS patients using various experimental methods revealed differences in protein composition and spectral characteristics compared to healthy individuals. Raman spectroscopy showed changes in the content of tryptophan and phenylalanine, as well as alterations in polypeptide secondary structures. Atomic-force microscopy revealed distinct morphological features in the tear fluid of MS patients. Liquid chromatography-mass spectrometry identified dysregulated metabolic pathways, while proteomic analysis identified differentially expressed proteins associated with inflammation.
Article
Polymer Science
Ameer R. K. Nassrah, Marianna Batkova, Natalia Tomasovicova, Tibor Toth-Katona
Summary: This study compares the photoaligning properties of polymer layers fabricated from the same constituents and finds that functionalized PMMA performs better than physically mixed ones.
Article
Crystallography
Lucia Balejcikova, Kristyna Zolochevska, Natalia Tomasovicova, Anatolii Nagornyi, Oleksandr Tomchuk, Viktor I. Petrenko, Vasil M. Garamus, Laszlo Almasy, Milan Timko, Peter Kopcansky
Summary: Iron-based materials, especially magnetite nanocrystals, have been widely used in various fields. Understanding the interactions between magnetite and biological macromolecules is crucial for the development of applications in medicine.
Article
Chemistry, Multidisciplinary
Peter Bury, Marek Vevericik, Frantisek Cernobila, Natalia Tomasovicova, Veronika Lackova, Katarina Zakutanska, Milan Timko, Peter Kopcansky
Summary: This study investigated 5CB liquid crystal composites with SiO2 nanoparticles and Fe3O4 nanoparticles using light transmission and SAW measurements. The composites exhibited an interesting memory effect, with SiO2 nanoparticles improving the effect and Fe3O4 nanoparticles decreasing it. The properties of these composites could have potential applications in memory devices for information storage.
Article
Chemistry, Physical
Katarina Zakutanska, Dmytro Miakota, Veronika Lackova, Shie-Chang Jeng, Dorota Weglowska, Filippo Agresti, Marketa Jarosova, Peter Kopcansky, Natalia Tomasovicova
Summary: This paper investigates the electromechanical and magnetomechanical memory effects induced by electric and magnetic fields in liquid crystal doped with aerosil nanoparticles. The systems studied exhibit hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The results suggest potential use of this system as voltage-driven or magnetic field-driven non-volatile memory devices.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
