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Impact of acute and chronic exposure to sulfamethoxazole on the kinetics and microbial structure of an activated sludge community.
Front Antibiot
April 2024
The Science Academy, Istanbul, Türkiye.
The aim of this study was to reveal the microbial and kinetic impacts of acute and chronic exposure to one of the frequently administered antibiotics, i.e., sulfamethoxazole, on an activated sludge biomass.
View Article and Find Full Text PDFPhotoenzyme Coupling System: Covalent Organic Frameworks In Situ Production of Hydrogen Peroxide Cascaded with Unspecific Peroxygenase to Achieve C-H Bonds Selective Activation.
ACS Appl Mater Interfaces
January 2025
Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
As an efficient, sustainable, and environmentally friendly semiconductor material, covalent organic frameworks (COFs) can generate hydrogen peroxide (HO) by photocatalysis, attracting wide attention in recent years. Herein, the effects of hydroxyl, methoxyl, and vinyl groups of imide-linked two-dimensional (2D) COFs on the photocatalytic production of HO were studied theoretically and experimentally. The introduction of vinyl groups greatly promotes the photogenerated charge separation and migration of COFs, providing more oxygen adsorption sites, stronger proton affinity, and lower intermediate binding energy, which effectively facilitates the rapid conversion of oxygen to HO.
View Article and Find Full Text PDFWidespread occurrence and relevance of phosphate storage in foraminifera.
Nature
January 2025
SUGAR, X-star, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan.
Foraminifera are ubiquitous marine protists that intracellularly accumulate phosphate, an important macronutrient in marine ecosystems and in fertilizer potentially leaked into the ocean. Intracellular phosphate concentrations can be 100-1,000 times higher than in the surrounding water. Here we show that phosphate storage in foraminifera is widespread, from tidal flats to the deep sea.
View Article and Find Full Text PDFOxidative Stress Early After Hematopoietic Stem Cell Transplant.
Transplant Cell Ther
January 2025
Division of Bone Marrow Transplantation and Immune Deficiency, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Department of Pediatrics, University of Cincinnati, Cincinnati, OH.
Background: HSCT conditioning regimens cause massive lysis of hematopoietic cells with release of toxic intracellular molecules into the circulation.
Objectives: To describe the response to oxidative stress early after hemopoietic stem cell transplantation (HSCT) and assess the association of early oxidative stress with later transplant outcomes.
Study Design: Key components of in the body's physiological response to oxidative stress were studied in a cohort of 122 consecutive pediatric allogeneic HSCT recipients.
Sex differences in the maximal metabolic steady state of fitness matched women and men.
J Appl Physiol (1985)
January 2025
Department of Human Physiology, Gonzaga University, Spokane, Washington, United States.
We tested the hypothesis that power at maximal metabolic steady state is similar between fitness matched men and women. Eighteen participants (9 men, 9 women) performed a cycling graded exercise test for maximal oxygen consumption (V̇O). Men and women were matched for V̇O normalized to fat free mass (FFM), which was 50.
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