Browse Articles

Iridium-Catalyzed Enantioselective C( <i>sp</i> ³ )–H Borylation of Bicyclo[1.1.0]butanes

Prediction of 30-day unplanned hospital readmission among elderly patients using patient and ward level factors

Effects of low calcium bentonite on the strength development of recycled aggregate concrete

SynergyGraph: predicting cell line specific drug combination synergy scores using knowledge graph representation and hypergraph modeling

UV-shielding photochromic composite films based on nanocrystalline cellulose modified with CeO2 and WO3 nanoparticles

Three-dimensional printing model-assisted single-port laparoscopic multiple myomectomy: a randomized controlled trial

Research on the design and simulation of grid-connected system of vertical gravity energy storage

Reduced graphene oxide promoted by SnO2 for photodegradation of tetracycline in water

Abstract Reduced graphene oxide, with a high specific surface area and conductivity, also exhibits photocatalytic activity, and its photocatalytic performance improves with the addition of semiconductors. In this study, SnO 2 /reduced graphene oxide (RGO) composite was applied for tetracycline removal from water under visible light irradiation. The photocatalytic performance of RGO was enhanced through SnO 2 deposition. RGO was synthesized using Hummer’s method and subsequently impregnated with SnCl 2 solution to deposit SnO 2 . The effect of SnO 2 loading was investigated, and the calcination temperature was set at 400 °C. FTIR, XRD, Raman spectroscopy, SEM, TEM, BET, PL, and DRS analyses characterized the SnO 2 /RGO photocatalyst. SEM and TEM confirmed RGO layered morphology. PL analysis revealed an electron-hole recombination peak at 394 nm. DRS results showed a reduction in the band gap of SnO 2 /RGO composite compared to pristine SnO 2 and RGO. The effects of photocatalyst dosage, initial tetracycline concentration, and pH were studied and optimized using Design-Expert software (version 11) to maximize degradation efficiency. Under optimized conditions, with a tetracycline concentration of 10 mg/L, catalyst dosage of 4 g/L, pH of 7, and 10 min exposure to a 125 W LED lamp, 92% degradation was achieved. Kinetic analysis followed a second-order rate model. The reusability and regenerability of the SnO 2 /RGO composite were evaluated over five cycles, yielding tetracycline removal efficiencies of 91%, 73.25%, 65.7%, 60.3%, and 57%, respectively. Tetracycline removal was further assessed in the presence of Na + , Cl − , Mg 2+ , and NO 3 − , as well as using tap water. Compared with previous studies, this system demonstrated comparable removal efficiency within a substantially shorter reaction time under visible light irradiation, underscoring its economic potential for water treatment applications.

Genotype A3 influenza A(H5N1) isolated from fur seals shows high virulence in mammals, but not airborne transmission

Spatio-temporal Attention driven Rainfall Inference using Transformative Architecture (SARITA)

One Health-related risk factors and seasonal variations in zoonotic bacteriological contamination of livestock water sources

Generation and ophthalmological characterization of oculocutaneous albinism type 1 pig models by selection-free genome editing

Sonophotocatalytic efficiency of nickel and copper supported ferrite nanoparticles doped MWCNTs nanocatalyst as a novel catalyst for amoxicillin degradation

Prognostic significance of the C-reactive protein–triglyceride–glucose index for all-cause and cardiovascular mortality in peritoneal dialysis: a multicenter cohort study

Short-pulsed proton irradiation stability in slot-die-coated bifacial perovskite photodetectors

Anthracyclines effect on mitochondrial function and biogenesis in normal blood cells of hodgkin lymphoma patients

Obstructive sleep apnea increases heartbeat-evoked potentials and reorganizes Granger-causal coupling between cortical interoception and autonomic variability during wakefulness

Challenges and benefits of hospital-at-home care in Iran from providers and patients’ insights

Characterization of a new specific mPGES-1 inhibitor in cardiovascular system

Assessing the generation and dispersal of respiratory particles using upper respiratory commensal bacteria as index organisms for respiratory pathogens

Abstract There is a need to better understand the dispersal and spread of respiratory pathogens. However, carrying out controlled microbiology-based simulation studies is difficult, particularly if the target organism is highly pathogenic or is currently unknown. An alternative approach is to use commensal upper respiratory tract (URT) bacteria as index organisms. Healthy volunteers were asked to perform defined respiratory activities within a purpose-built flexible-film isolator. The dispersal of large (L-RPs) and small respiratory particles (S-RPs) was assessed via passive (settle plates) and active air sampling, respectively. Activities were carried out with or without a face covering. Dispersal of respiratory particles differed with individual. During speech, increased vocal volume was associated with a significant increase in the number of URT bacteria deposited as L-RPs and captured by air samplers (S-RPs). Disposable (IIR) medical face masks significantly reduced deposition of L-RPs and reduced the odds of recovering higher numbers of S-RPs by 87% (CI: 63%, 96%). Transparent face coverings were as effective as (IIR) face masks, but face shields had limited efficacy, particularly when worn by individuals who dispersed high numbers of RPs. Commensal URT bacteria can be used to study the risk of respiratory transmission in the absence of the target pathogen.