Article
Multidisciplinary Sciences
Stephan Heinitz, Jasper Mermans, Dominic Maertens, Hanna Skliarova, Alexander Aerts, Thomas Cardinaels, Christophe Gueibe, Jos Rutten, Natalie Ireland, Daniel Kuznicki, Steven Kuznicki
Summary: Adsorption of radon gas (Rn-222) on activated charcoal at cryogenic temperatures has been practiced for over 100 years. However, little progress has been made in adsorbing radon at ambient conditions. This study demonstrates that synthetic silver-exchanged zeolites have exceptional radon adsorption properties at room temperature. These materials could potentially replace activated charcoal and be used for radon mitigation applications.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Jiacheng Huang, Chade-Deng Li, Haodong Zhao, Meng Yu, Aihui Zhang, Baishan Fang
Summary: The biorefinery concept offers a green solution for industrial production of biofuel or chemicals by substituting fossil resources with renewable biomass. This study developed an extraordinary artificial intelligence system for fully automated fed-batch fermentation of 1,3-propanediol, which achieved higher concentration and yield compared to conventional strategies. This system regulates the feeding rate and maintains a low concentration of glycerol, enhancing glycerol utilization efficiency and decreasing medium cost.
Article
Microbiology
Chanenath Sriaporn, Kathleen A. Campbell, Martin J. Van Kranendonk, Kim M. Handley
Summary: This study analyzed the genomes of Acidithiobacillus strains from hot springs in the Taupo Volcanic Zone of New Zealand, revealing four distinct species, including three novel ones. The findings suggest that these Acidithiobacillus have undergone genome streamlining to adapt to high temperatures in geothermal environments.
Article
Materials Science, Ceramics
Hafiza Zahra Rab Nawaz, Ushnah Falak, Tahmina Naz, Mirza Mahmood Baig, Rana Tariq Mehmood Ahmad, Aamir Rasheed, Ghulam Dastgeer
Summary: Using natural plant extracts to synthesize metal/metal oxide heterojunction-based photocatalysts is an emerging strategy to address global water contamination. However, the limited availability of plant extracts and poor control of the reduction process have hindered further research in this field. In this report, a novel plant source "Lactuca Serriola" was explored to synthesize silver/silver oxide heterostructures, which showed excellent catalytic activity in degrading dyes and nitrophenol, as well as effective antibacterial action.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Xinting Cheng, Xibo Pei, Wenjia Xie, Junyu Chen, Yuanyuan Li, Jian Wang, Huile Gao, Qianbing Wan
Summary: This study successfully synthesized silver nanoparticles with pH sensitive charge reversal and self-aggregation capacities, and applied them in animal models. The nanoparticles showed antibacterial effects, inhibited plaque biofilm formation, and improved inflammatory responses.
Article
Automation & Control Systems
Philip K. Hopke
Summary: Rotational ambiguity is a major problem in factor analysis methods applied to mixture resolution. Self-modeling curve resolution can achieve good separations with fixed spectral characteristics, but challenges remain for air pollution mixture problems.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2021)
Article
Biochemistry & Molecular Biology
Sol-Bi Kim, Jae-Hoon Jung
Summary: Ambient temperature is a major factor affecting flowering in plants. Increasing temperature leads to more rapid flowering in most plants, including Arabidopsis. However, warm temperatures also result in increased variability in flowering time. To reduce this variability, a simple method is proposed, which involves first growing plants at cool temperatures and then shifting to warm temperatures. This approach allows plants to respond more stably to warm temperatures and enables more precise studies of thermo-response in flowering time control.
PLANT SIGNALING & BEHAVIOR
(2023)
Article
Ecology
Jonatha H. Raberg, David J. Harning, Sarah E. Crump, Greg de Wet, Aria Blumm, Sebastian Kopf, Aslaug Geirsdottir, Gifford H. Miller, Julio Sepulveda
Summary: The use of brGDGT distributions in lake sediments for reconstructing terrestrial paleotemperatures is important, but the microbial producers of these membrane lipids remain unknown. Through new high-latitude lake sites and analysis methods, researchers have successfully deciphered the control of temperature, conductivity, and pH on brGDGT, revealed new distribution patterns, and provided a method for exploring the biological underpinnings of their structural diversity.
Article
Chemistry, Multidisciplinary
Zhannat Ashikbayeva, Arman Aitkulov, Timur Sh. Atabaev, Wilfried Blanc, Vassilis J. Inglezakis, Daniele Tosi
Summary: Thermal ablation therapy is an effective alternative to surgery, and the use of silver nanoparticles can improve heat propagation during the procedure. The study demonstrated that silver nanoparticles could increase the temperature during thermal therapies by propagating the heat.
Article
Chemistry, Physical
Diego Chaparro, Eirini Goudeli
Summary: Reactive molecular dynamics (MD) was used to study the oxidation kinetics of silver nanoparticles (AgNPs) in the temperature range of 600-900 K. It was found that oxidation of metallic AgNPs led to the formation of a core-shell structure with a silver oxide layer on the surface. Higher temperatures and smaller particle sizes resulted in faster loss of the fcc crystallinity of the Ag core. The (100) facet was more prone to oxidation than the (111) facet, consistent with previous experiments and computational works. The fraction of Ag+ ions in the oxide layer increased with decreasing particle size, indicating that smaller particles released more Ag+ ions in water, in agreement with ion-selective electrode experiments. A reaction-limited model was used to quantify the oxidation rate of nanosilver at various temperatures, showing that higher temperatures led to faster oxidation. Additionally, smaller particles (d(p) ≤ 6 nm) exhibited lower activation energies, implying that they were more susceptible to oxidation than larger ones, consistent with experiments on Al nanoparticles.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Environmental Sciences
Wenxi Liao, Jennifer Drake, Sean C. Thomas
Summary: The study found that granulated biochar greatly enhances plant growth and physiological status, while improving water retention capacity of the substrate. However, conventional biochar suppresses plant growth. Granulated biochar at intermediate particle sizes best enhances plant performance.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Food Science & Technology
Maria Dlugaszek, Jadwiga Mierczyk
Summary: This study assessed the content of elements in green tea infusions, finding that brewing time and pH values significantly affected the amount of extracted elements.
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
(2023)
Article
Infectious Diseases
Seemab Pervaiz, Iram Bibi, Wajid Rehman, Hadil Faris Alotaibi, Ahmad J. Obaidullah, Liaqat Rasheed, Mohammed M. Alanazi
Summary: This study presents a green synthesis method for silver nanoparticles using essential oils as capping and reducing agents. The prepared nanoparticles were characterized and it was found that those synthesized with cinnamon oil and cardamom oil had smaller particle sizes compared to clove oil. All the prepared samples exhibited strong antimicrobial activities and also showed resilient photocatalytic activities against dyes. It was concluded that cinnamon oil is the most effective in reducing particle size and homogenizing size for the synthesis of silver nanoparticles.
Article
Infectious Diseases
Amalia Miranda, Tamara Akpobolokemi, Etelka Chung, Guogang Ren, Bahijja Tolulope Raimi-Abraham
Summary: Plant-mediated green synthesis is a cost-effective and eco-friendly method to synthesize metallic nanoparticles. This study investigated the influence of experimental pH on the antimicrobial properties of silver nanoparticles synthesized using Spinacia oleracea leaf extract. The results showed that experimental pH played a significant role in determining the antimicrobial activity of the synthesized silver nanoparticles.
Article
Chemistry, Multidisciplinary
N. E. Traore, M. J. Uttinger, P. Cardenas Lopez, D. Drobek, L. Gromotka, J. Schmidt, J. Walter, B. Apeleo Zubiri, E. Spiecker, W. Peukert
Summary: Metallic alloy nanoparticles (NPs) with various optical, electrical and catalytic properties can be synthesized based on size, shape, and composition. We focus on environmentally friendly synthesis conditions for the design of homogeneous silver-gold alloy NPs using dextran as a reducing and stabilizing agent. Our one-pot, low temperature, reaction-controlled, green and scalable synthesis route allows for well-controlled composition and narrow particle size distribution. The reaction kinetics, mechanism, and scale-up potential are also discussed.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Jong Kuk Lim, Tianhao Liu, Jin Seong Park
Summary: The study showed that using eco-friendly manipulations such as ultrasonic wave treatment, visible light irradiation, mild heating, and lowering the viscosity of the reaction media can enhance the formation rate of silver nanoparticles in glycerol.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Jong Kuk Lim, Tianhao Liu, Jisu Jeong, Haeun Shin, Heung Ju Jang, Sung-Pyo Cho, Jin Seong Park
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)