An Over 30-Year Analysis of Heavy Metal Deposition in Daya Bay Sediments.

Sediment cores were collected from the nearshore to bay mouth region in Daya Bay, aiming to describe the historical patterns of heavy metals deposition in the sediment. During the last 40 years, the heavy metals exhibited significant different deposition behaviors in the sediment, in which As, Zn, Cr were more enriched and contributed to metals pollution in this area. Moreover, heavy metals deposition exhibited completely opposite behaviors from the nearshore to bay mouth region.

Exogenous diethyl aminoethyl hexanoate alleviates the damage caused by low-temperature stress in Phaseolus vulgaris L. seedlings through photosynthetic and antioxidant systems.

Background: Phaseolus vulgaris is a warm-season crop sensitive to low temperatures, which can adversely affect its growth, yield, and market value. Exogenous growth regulators, such as diethyl aminoethyl hexanoate (DA-6), have shown potential in alleviating stress caused by adverse environmental conditions. However, the effects that DA-6 has on P.

Anisotropically Epitaxial P-N Heterostructures Actuating Efficient Z-Scheme Photocatalytic Water Splitting.

Crafting anisotropically epitaxial p-n heterostructures with Z-scheme charge transmission is a promising avenue toward excellent photocatalytic efficiency, yet the large lattice mismatch and diverse crystal growth habits between components have often arisen as a big challenge to this goal. Here, anisotropically epitaxial p-n heterostructures with 19.8% lattice mismatch are obtained via a dynamics-mediated seeded growth tactic under reaction temperature as low as 60 °C.

Mangroves increased the mercury methylation potential in the sediment by producing organic matters and altering microbial methylators community.

Mangrove ecosystem has attracted global attention as a hotspot for mercury (Hg) methylation. Although numerous biotic and abiotic parameters have been reported to influence methylmercury (MeHg) production in sediments, the key factors determining the elevated MeHg levels in mangrove wetlands have not been well addressed. In this study, Hg levels in the sediments from different habitats (mudflats, mangrove fringe, and mangrove interior) in the Futian mangrove wetland were investigated, aiming to characterize the predominant factors affecting the MeHg production and distinguish the key microbial taxa responsible for Hg methylation.

Combined Impacts of Climate and Tree Physiology on Mercury Accumulation in Tropical and Subtropical Foliage and Robust Model Parametrization.

Atmospheric elemental mercury (Hg) assimilation by foliage contributes prevalently to the global atmospheric Hg sink in forests. Today, little is known about the mechanisms of foliar Hg accumulation and how climate factors and tree physiology interact to impact it. Here, we examined meteorological factors, foliar physiological traits, and Hg accumulation rates from leaf emergence to senescence in a tropical rainforest, tropical savanna, and subtropical evergreen broadleaf forest.

Influence of global warming and human activity on mercury accumulation patterns in wetlands across the Qinghai-Tibet Plateau.

Wetlands in the Qinghai-Tibet Plateau are a unique and fragile ecosystem undergoing rapid changes. We show two unique patterns of mercury (Hg) accumulation in wetland sediments. One is the 'surface peak' in monsoon-controlled regions and the other is the 'subsurface peak' in westerly-controlled regions.

Deciphering the Coupling State-Dependent Transcription Termination in the Escherichia coli Galactose Operon.

The distance between the ribosome and the RNA polymerase active centers, known as the mRNA loop length, is crucial for transcription-translation coupling. Despite the existence of multiple expressomes with varying mRNA loop lengths, their in vivo roles remain largely unexplored. This study examines the mechanisms governing transcription termination in the Escherichia coli galactose operon, revealing a crucial role in the transcription and translation coupling state.

MHTAPred-SS: A Highly Targeted Autoencoder-Driven Deep Multi-Task Learning Framework for Accurate Protein Secondary Structure Prediction.

Accurate protein secondary structure prediction (PSSP) plays a crucial role in biopharmaceutics and disease diagnosis. Current prediction methods are mainly based on multiple sequence alignment (MSA) encoding and collaborative operations of diverse networks. However, existing encoding approaches lead to poor feature space utilization, and encoding quality decreases with fewer homologous proteins.

Identification of the linear Fc-binding epitope on the bovine IgG1 Fc receptor of (boFcγRI) using synthetic peptides.

Background: Bovine IgG1 Fc receptor (boFcγRI) is a homologue to human FcγRI (CD64) that has three extracellular Ig-like domains and can bind bovine IgG1 with high affinity. Identification of the linear epitope for Fc-binding on boFcγRI provides new insights for the IgG-Fcγ interaction and FcγR-targeting drugs development.

Methods: The boFcγRI molecules were expressed on cell surface of the boFcγRI -transfected COS-7 cells.

Transcriptome and metabolome analyses reveal the promoting effects of arbuscular mycorrhizal fungi on selenium uptake in grapevines.

To improve the selenium (Se) uptake in grapes, the effects of arbuscular mycorrhizal fungi (AMF) on the Se accumulation in grapevines were studied under a soil Se concentration of 5 mg/kg, and the transcriptome and metabolome sequencing were used to elucidate the regulatory mechanism of AMF on Se accumulation. AMF initially decreased the biomass of grapevines, but later increased the biomass. Moreover, AMF enhanced the activities of Se metabolism enzymes (adenosine triphosphate sulfurylase, adenosine 5'-phosphosulfate reductase, serine acetyltransferase, and cysteine methyltransferase) and the Se concentration in grapevines.

Hydrogen bonded organic framework pores differentially loading triazole for photocatalytic uranium reduction.

Using temperature modulation, two distinct hydrogen bond organic frameworks HOF-C and HOF-K with different pore sizes were synthesized from the same ligands, tris(4-(4-1,2,4-triazole-4-yl)phenyl)amine. The pore size difference prevents TRZ from entering HOF-K, while allowing TRZ to selectively insert into the larger-pored HOF-C to form HOF-C-TRZ. The donor-acceptor (D-A) structure formed in HOF-C-TRZ enhances its photoelectric response and exhibits exceptional uranium reduction under visible light irradiation.

Interventional treatment of right lower lobe bronchial schwannoma under bronchoscopy: A case report and literature review.

Bronchial schwannoma is a rare benign tumor traditionally managed through surgical resection. This case report describes a 69-year-old Chinese woman with an asymptomatic bronchial schwannoma incidentally discovered during routine health check-up. Computed tomography (CT) and bronchoscopy revealed a broad-based mass (27 mm × 16 mm) at the right lower lobe bronchus, causing complete obstruction of the dorsal segment and severe stenosis (>80%) of the basal segment.

Acute heat stress upregulates Akr1b3 through Nrf-2 to increase endogenous fructose leading to kidney injury.

In recent years, the prevalence of extremely high-temperature climates, has led to an increase in cases of acute heat stress, which has been identified as a contributing factor to various kidney diseases. Fructose, the end product of the polyol pathway, has been linked to kidney conditions such as kidney stones, chronic kidney disease and acute kidney injury. However, the relationship between acute heat stress and kidney injury caused by endogenous fructose remains unclear.

Interface-aware molecular generative framework for protein-protein interaction modulators.

Protein-protein interactions (PPIs) play a crucial role in numerous biochemical and biological processes. Although several structure-based molecular generative models have been developed, PPI interfaces and compounds targeting PPIs exhibit distinct physicochemical properties compared to traditional binding pockets and small-molecule drugs. As a result, generating compounds that effectively target PPIs, particularly by considering PPI complexes or interface hotspot residues, remains a significant challenge.

Decoupling H and O Release in Particulate Photocatalytic Overall Water Splitting Using a Reversible O Binder.

H and O evolutions occur simultaneously for conventional particulate photocatalytic overall water splitting (PPOWS), leading to a significant backward reaction and the formation of an explosive H/O gas mixture. This is an issue that must be addressed prior to industrialization of PPOWS. Here, a convenient, cost-effective, and scalable concept is introduced to uncouple hydrogen and oxygen production for PPOWS.

Phosphorylation of the transcription factor OsNAC29 by OsMAPK3 activates diterpenoid genes to promote rice immunity.

Well-conserved mitogen-activated protein kinase (MAPK) cascades are essential for orchestrating of a wide range of cellular processes in plants, including defense responses against pathogen attack. NAC transcription factors (TFs) play important roles in plant immunity, but their targets and how they are regulated remain largely unknown. Here, we identified the TF OsNAC29 as a key component of a MAPK signaling pathway involved in rice (Oryza sativa) disease resistance.

Climate and vegetation controlling accumulation and translocation of heavy metals in water tower regions of Qinghai-Tibet Plateau.

Understanding how climate and vegetation influencing accumulation and translocation of heavy metals (HMs) in soils and vegetation in the Qinghai-Tibet Plateau (QTP) is critical to assess the ecological risk induced by HMs under the global warming. To accompany this goal, we comprehensively determined the accumulation and translocation of HMs within the interface of soil-vegetation in water tower regions of the QTP. The PMF model results show that 54 %-86 % of cobalt (Co), nickel (Ni), arsenic (As), zinc (Zn) and lead (Pb) in the surface soil are mainly from rock weathering and 54 % of cadmium (Cd) comes from effect of litter return.

Microscopic Mechanism of Coal Wetting-Dissolution under Surfactant-Assisted Acidification Conditions.

Coal wetting-acidification is a promising method to enhance the coal dust control and gas permeability. To elucidate the internal transformation process of coal wetting-dissolution, this study employs contact angle measurements, low-temperature nitrogen adsorption, scanning electron microscopy, and X-ray diffraction to investigate the wetting characteristics and pore structure changes of coal before and after treatment with acid and surfactant composite reagents. The interaction mechanisms between mineral dissolution and wetting-dissolution characteristics are explored.

Decoupled tip-tilt detection and steering of beamlets in a fiber laser array using sequential tagging lasers.

The tiled fiber laser array is a promising architecture for power scaling and mitigation of atmospheric turbulence. Precise tip-tilt detection and steering of the beamlets in the array to guarantee effective overlap in the far-field is essential for high beam qualities. However, the beamlets are tightly coupled in the far-field, making it a major challenge to identify each other.