BDD electrode pulsed alternating electrochemical oxidation of sulfamethazine in antibiotic wastewater: Process optimization and degradation mechanism.

To address the issues of electrode passivation and high electric energy consumption (EEC) associated with the removal of antibiotic wastewater using traditional direct current electrocatalytic oxidation (DCEO) with Boron-Doped Diamond (BDD) electrodes, this study aims to develop an efficient, low-cost, and self-cleaning BDD electrode pulsed alternating electrocatalytic oxidation (BDD-PAEO) technology. The experimental findings demonstrated that, under optimal conditions, the BDD-PAEO mode achieved a 99.9% removal efficiency for sulfamethazine (SMZ).

A ten-year (2012-2021) fine-resolution (1 km, hourly) precipitation dataset over southeastern Tibetan Plateau.

Intense sub-daily precipitation on the Tibetan Plateau (TP) can trigger a cascade of natural hazards (flash floods, debris flows, etc.), causing significant environmental impacts. Current precipitation products for the TP often lack sufficient spatial or temporal resolution, hindering accurate characterization and mitigation of precipitation-related hazards.

Response of key nitrogen removal processes in estuarine salt marshes to different plant harvesting patterns varies significantly across different time scales.

Estuarine wetlands are crucial in mitigating eutrophication in estuarine waters through plant uptake and microbial transformation. Nitrogen is one of the main nutrients removed. However, without proper plant harvesting, the nitrogen absorbed by plants can return to the water as litter during autumn and winter, potentially causing secondary pollution.

Exploration of ferroptosis-related biomarkers with prognostic capability in RIF based on WGCNA.

Purpose: To explore the association of ferroptosis with repeated implantation failure (RIF) and prognostic capability of ferroptosis-related genes.

Methods: Data in GSE106602 from the GEO database were used for gene co-expression network construction to confirm ferroptosis-related genes compared to gene sets that were downloaded from FerrDB. Then these genes were analyzed for functional enrichment and validated using endometrium samples from our center.

Normal weight obesity, circulating biomarkers and risk of breast cancer: a prospective cohort study and meta-analysis.

Background: Individuals with normal weight obesity (NWO) often escape the attention of healthcare providers who may assume that a normal body mass index (BMI) correlates with low health risks. However, it remains unknown whether NWO increases the risk of breast cancer.

Methods: This study included 22,257 and 52,506 pre- and postmenopausal females with normal BMI in the UK Biobank.

Particle size is an important factor influencing the effects of biochar return to woodland soils: An evaluation from the perspective of sapling growth and soil microbial carbon processes.

Biochar can increase ecosystem carbon sequestration by promoting plant growth and stabilizing soil organic carbon (SOC). Biochar produced from forest waste typically varies in particle size and is frequently applied directly for soil enhancement without pulverization. The effects of different biochar particle sizes on sapling growth, woodland soil properties and microbial carbon processes are unclear.

Investigating the effects of COVID-19 on sperm in male smokers: A prospective integrated proteomic and metabolomic study.

Notable variations in semen parameters among non-smoking males have been documented post-COVID-19 pandemic. The role of smoking as a significant contributing factor to male infertility has been substantiated. Does the combined effect of smoking and SARS-CoV-2 infection impact male reproductive function? A prospective descriptive cohort study was performed using data from 90 smoking and 90 non-smoking males before and after coronavirus infection in a single center over a period of 3 months.

Biochar promotes microbial CO fixation by regulating feedback inhibition of metabolites.

Chemoautotrophs, the crucial contributors to biological carbon fixation, derive energy from reducing specific inorganic substances and utilize CO for growth. However, the release of extracellular free organic carbon (EFOC) by chemoautotrophic microorganisms can inhibit their own growth and metabolism. To reduce the feedback inhibition effect, a low-release biochar (BC-LR) was applied to adsorb EFOC.

DFMG decreases angiogenesis to uphold plaque stability by inhibiting the TLR4/VEGF pathway in mice.

The aim of this study was to elucidate the specific mechanism through which 7-difluoromethoxy-5,4'-dimethoxygenistein (DFMG) inhibits angiogenesis in atherosclerosis (AS) plaques, given its previously observed but poorly understood inhibitory effects. In vitro, a model using Human Umbilical Vein Endothelial (HUVEC-12) cells simulated the initial lesion in the atherosclerotic pathological process, specifically oxidative stress injury, by exposing cells to 30 μmol/L LPC. Additionally, an AS mouse model was developed in ApoE knockout mice through a 16-week period of high-fat feeding.

Preliminary manifestation of the Yangtze River Protection Strategy in improving the carbon sink function of estuary wetlands.

In 2016, the Yangtze River Protection Strategy was proposed and a series of measures were applied to restore the health and function of the Yangtze River ecosystem. However, the impact of these measures on the carbon (C) sink capacity of the Yangtze River estuary wetlands has not been exhaustively studied. In this work, the effects of these measures on the C sink capacity of Yangtze River estuary wetlands were examined through the long-term monitoring of C fluxes, soil respiration, plant growth and water quality.

Deep learning in water protection of resources, environment, and ecology: achievement and challenges.

The breathtaking economic development put a heavy toll on ecology, especially on water pollution. Efficient water resource management has a long-term influence on the sustainable development of the economy and society. Economic development and ecology preservation are tangled together, and the growth of one is not possible without the other.

Effect of tamoxifen in patients with thin endometrium who underwent frozen-thawed embryo transfer cycles: a retrospective study.

Introduction: Thin endometrium leads to an impaired implantation rate. The aim of the study is to compare the clinical outcomes of tamoxifen (TAM) and hormone replacement therapy (HRT) used in patients with thin endometrium (<7mm) in frozen-thawed embryo transfer (FET)cycles.

Methods: A total of 176 FET cycles with thin endometrium were retrospectively analyzed in our center from Jan 2020 to May 2022.

Developing self-floating N-defective graphitic carbon nitride photocatalyst for efficient photodegradation of Microcystin-LR under visible light.

The frequent occurrence of algal blooms in water bodies leads to a significant accumulation of microcystin-LR (MC-LR). In this study, we developed a porous foam-like self-floating N-deficient g-CN (SFGN) photocatalyst for efficient photocatalytic degradation of MC-LR. Both the characterization results and DFT calculations indicate that the surface defects and floating state of SFGN synergistically enhance light harvesting and photogenerated carrier migration rate.

How Matrixes Influence Room Temperature Ultralong Organic Phosphorescence: 4-Dimethylaminopyridine vs Carbazole Derivative.

How matrixes influence room temperature ultralong organic phosphorescence (RTUOP) in the doping systems is a fundamental question. In this study, we construct guest-matrix doping phosphorescence systems by using the derivatives (ISO2N-2, ISO2BCz-1, and ISO2BCz-2) of three phosphorescence units (N-2, BCz-1, and BCz-2) and two matrixes (ISO2Cz and DMAP) and systematically investigate their RTUOP properties. Firstly, the intrinsic phosphorescence properties of three guest molecules were studied in solution, in the pure powder state, and in PMMA film.

Protocol to analyze the inhibitory effect of free organic carbon generated by chemoautotrophic bacteria on their CO fixation.

Here, we present a protocol to analyze the inhibition of self-generated extracellular free organic carbon (EFOC) on CO fixation by chemoautotrophic bacteria. We detail the construction and operation of membrane reactor, followed by a simulation experiment to verify the inhibition of EFOC on CO fixation. We further describe the analysis of main inhibitory components in EFOC and measurement of abundance and transcription level of ribulose bisphosphate carboxylase/oxygenase (RuBisCO) gene to clarify the mechanism of the main inhibition components on CO fixation.

Environmental risks of antibiotic resistance genes released from biological laboratories and its control measure.

Antibiotic resistance genes (ARGs) are a growing global threat to public health. Biological laboratory wastewater contains large amounts of free ARGs. It is important to assess the risk of free ARGs from biological laboratories and to find appropriate treatments to control their spread.

Tidal organic input restricts CO sequestration capacity of estuarine wetlands.

The inland and estuary wetlands that characterized by different natural environment perform distinctly in soil carbon (C) sink. It was deemed that estuary wetland has a higher organic C accumulation rate than inland wetland, due to its higher primary production and tidal organics input, thus having higher organic C sink capacity. While from CO budge in view, whether does the large organic input from tide restrict CO sequestration capacity of estuary wetland has not been discussed comparing with inland wetland.

Cadmium stimulated cooperation between bacterial endophytes and plant intrinsic detoxification mechanism in Lonicera japonica thunb.

Due to the intimate association between plant physiology and metabolism, the internal colonizing microbe (endophytes) community must be adjusted to support plant productivity in response to cell damage in plants under stress. However, how endophytes coordinate their activities with plant intrinsic mechanisms such as antioxidative systems and detoxification pathways during Cd accumulation remains unknown. In this hydroponic pot study, we investigated how exposure of Lonicera japonica.

The high organic carbon accumulation in estuarine wetlands necessarily does not represent a high CO sequestration capacity.

Estuarine wetlands with high organic carbon (OC) accumulation rates due to their high plant biomass and interception of tide-derived OC are generally considered as large CO sinks. However, our previous study found that tidal OC input seems to stimulate soil CO emissions, potentially weakening CO sequestration in estuarine wetlands. To further verify this phenomenon, we first established a structural equation model, which confirmed a positive correlation between tidal OC input and soil organic carbon (SOC) and soil respiration.

Continuous-flow membrane bioreactor enhances enrichment and culture of autotrophic nitrifying bacteria by removing extracellular free organic carbon.

An activated sludge system can be inoculated with enriched nitrifying bacteria to enhance NH-N removal, or enriched nitrifying bacteria can be added directly to a river to remove NH-N. However, the enrichment culture is still generally inefficient and the technical bottleneck has not been clarified. Previous studies have shown that extracellular free organic carbon (EFOC) inhibits the growth of some autotrophic bacteria, and separating EFOC during culture with a membrane bioreactor (MBR) promotes the continuous growth of autotrophic bacteria and CO fixation.

A Class of Organic Units Featuring Matrix-Controlled Color-Tunable Ultralong Organic Room Temperature Phosphorescence.

A novel class of organic units (N-1 and N-2) and their derivatives (PNNA-1 and PNNA-2) with excellent property of ultralong organic room temperature phosphorescence (UORTP) is reported. In this work, N-1, N-2, and their derivatives function as the guests, while organic powders (PNCz, BBP, DBT) and polymethyl methacrylate (PMMA) serve as the host matrixes. Amazingly, the color of phosphorescence can be tuned in different states or by varying the host matrixes.

Main components of free organic carbon generated by obligate chemoautotrophic bacteria that inhibit their CO fixation.

Chemoautotrophic bacteria play an important role in combating the rise in global CO. However, recently it was found that extracellular free organic carbon (EFOC) generated by chemoautotrophic bacteria inhibits their CO fixation. Although continuous-flow membrane bioreactor can remove EFOC and enrich bacteria, it may also remove beneficial bio-factors for bacterial growth.

Current Progress, Challenges and Perspectives in the Microalgal-Bacterial Aerobic Granular Sludge Process: A Review.

Traditional wastewater treatment technologies have become increasingly inefficient to meet the needs of low-consumption and sustainable wastewater treatment. Researchers are committed to seeking new wastewater treatment technologies, to reduce the pressure on the environment caused by resource shortages. Recently, a microalgal-bacterial granular sludge (MBGS) technology has attracted widespread attention due to its high efficiency wastewater treatment capacity, low energy consumption, low CO emissions, potentially high added values, and resource recovery capabilities.

Frontier Materials for Adsorption of Antimony and Arsenic in Aqueous Environments: A Review.

As highly toxic and carcinogenic substances, antimony and arsenic often coexist and cause compound pollution. Heavy metal pollution in water significantly threatens human health and the ecological environment. This article elaborates on the sources and hazards of compound antimony and arsenic contamination and systematically discusses the research progress of treatment technology to remove antimony and arsenic in water.