Continuous and precise modulation of vortex beams based on terahertz full-space coding metasurfaces.

Vortex beams carrying orbital angular momentum (OAM) exhibit excellent potential for applications in fields such as sixth-generation communication, quantum information processing, and imaging technologies. However, the realization of multi-mode and full-space continuous precision modulation of vortex beams still faces significant challenges. In this study, a terahertz full-space coding metasurface based on vanadium dioxide (VO) is proposed, combined with a more accurate generalized coding strategy, convolution, and generalized superposition methods to achieve continuous and precise modulation of vortex beams.

Graphene-assisted electromagnetically induced transparency-like terahertz bio-sensor for ultrasensitive detection using optics-enhanced sensing.

In recent years, biosensors based on terahertz metamaterials have emerged as a prominent area of research. However, studies focusing on enhancing biosensing performance through optical pumping to improve sensitivity are scarce. This paper proposes a graphene-based electromagnetically induced transparency-like (EIT-like) optics-enhanced terahertz metamaterials biosensor.

Abnormal Anti-Kasha Emission and TADF in Anionic Cycloarylenes.

Incorporation of non-benzoid rings into cycloarylenes significantly alters their molecular geometry and optical behavior. Recently, we synthesized two ferrocene-doped cycloarylenes, (CpFe)-1 and (CpFe)-2. However, the {FeCp} moieties in these architectures limited their optical properties.

Isolation and pan-genome analysis of Acinetobacter junii SC22, a heavy metal(loid)s resistant and plant growth promoting bacterium, from the Zijin Gold and Copper mine.

Excess heavy metals can be toxic to plants and microbes. The application of plant growth promoting bacteria (PGPB) in agriculture has gained global attention for promising sustainable development, including in heavy metals polluted soil. However, the metal resistance and plant growth promoting determinants of strains belonging to the genus Acinetobacter remain poorly understood.

Innovative application of recyclable magnetic LDO beads for enhancing the remediation of Cd and Pb contamination and the humification during composting.

This study developed recyclable magnetic layered double oxide beads (Mag-LDO) for composting with heavy metal-contaminated soil and agricultural waste, aiming to reduce heavy metals (HMs) concentration and bioavailable forms, enhance humification, and elucidate the underlying mechanisms. Results showed that a 5 % addition of Mag-LDO increased humic acid (HA) formation by 16.02 % and significantly reduced total Cd and Pb by 18.

Ultrasensitive simultaneous detection of lead and cadmium in water using gold nanocluster-modified gold electrodes.

Heavy metals (HMs) pose significant environmental risks due to their widespread presence. In particular, lead (Pb) and cadmium (Cd) can accumulate in the human body through prolonged exposure or bioaccumulation the food chain, presenting substantial threats to human health and ecosystems. This study developed a novel electrochemical sensing platform for simultaneous detection of trace Pb and Cd using a bare gold electrode modified with gold nanoclusters (GNPs-Au) through a potentiostatic method.

Ultrasensitive terahertz metasensor integrated with EIT-like coupling and liquid flow micro-channels for organic solvent detection and identification.

Terahertz (THz)-based metasurface sensors offer potential and extensive application prospects for organic solvent detection. This study proposed a liquid sensor comprising an electromagnetically induced transparency (EIT)-like THz metasurface covered by a channel. The designed device can exploit variations in the EIT-like resonance peaks to distinguish between the concentrations of three types of organic solvents (ethanol(ET), acetone(AC), and isopropyl alcohol(IPA)).

In-situ structural modification on spinel oxide to achieve efficient removal of refractory organics: Triple optimisation of degradation performance.

Spinel oxide has attracted interest in wastewater treatment, owing to its visible light (VIS) adsorption properties and bimetallic synergism. However, owing to the inefficient separation of photogenerated carriers and poor redox property, there is an urgent need to develop appropriate modification strategies to address these bottlenecks. This study aimed to develop CuFeO/CuFeSx (CFO/CFSx) heterojunction with oxygen vacancies (OVs) via an in-situ structural modification to trigger the generation of more radicals with low oxidant consumption for the efficient degradation of refractory organics.

Unraveling the mechanisms of post-treatment to enhance humification and Cd remediation in compost through EDTA-Fenton-Like systems.

This study aimed to enhance humification and cadmium (Cd) remediation in compost by investigating the effects of three post-treatments: ultrapure water, citric acid, and ethylenediaminetetraacetic acid disodium (EDTA). The results revealed that the EDTA post-treatment significantly enhanced humification by facilitating an EDTA-Fenton-like system within compost comprising rice straw and river sediment to remediate Cd-contaminated sediment. EDTA post-treatment not only promoted humic substances and humic acid concentrations of up to 66.

Hybrid amorphous strontium titanate and terahertz metasurface for ultra-sensitive temperature sensing.

In this study, a hybrid amorphous strontium titanate (STO) and terahertz metasurface were studied. Because of the excellent physical properties of amorphous STO, such as its dielectric properties and high transmittance in the terahertz region, it plays a core role in realizing a novel terahertz (THz) temperature sensor with high performance in the temperature range of 500-608 K. A blue shift of the absorption peaks appeared for the THz wave as the temperature increased, which confirmed the temperature-sensing function.

Combined Analysis of Grade Differences in Lapsang Souchong Black Tea Using Sensory Evaluation, Electronic Nose, and HS-SPME-GC-MS, Based on Chinese National Standards.

Tea standard samples are the benchmark for tea product quality control. Understanding the inherent differences in Chinese national standards for Lapsang Souchong black tea of different grades is crucial for the scientific development of tea standardization work. In this study, Lapsang Souchong black tea of different grades that meet Chinese national standards was selected as the research object.

Green manure () cover promotes tea plant growth by regulating soil carbon cycling.

Introduction: In mountainous tea plantations, which are the primary mode of tea cultivation in China, issues such as soil erosion and declining soil fertility are particularly severe. Although green manure cover is an effective agricultural measure for restoring soil fertility, its application in mountainous tea plantations has been relatively understudied.

Methods: This study investigated the effects of continuous green manure cover using the slope-protecting plant on tea plant growth and soil microbial community structure.

Improved humification and Cr(VI) immobilization by CaO and FeO during composting.

The current research studied how FeO nanomaterials (NMs) and CaO affect humification and Cr(VI) immobilization and reduction during the composting of oil-tea Camellia meal and Cr-contaminated soil. The results showed that FeO NMs and CaO successfully construct a Fenton-like reaction in this system. The excitation-emission matrix-parallel factor (EEM-PARAFAC) demonstrated that this Fenton-like treatment increased the generation of humic acids and accelerated the humification.

A Sb(III)-specific efflux transporter from Ensifer adhaerens E-60.

Antimony is pervasive environmental toxic substance, and numerous genes encoding mechanisms to resist, transform and extrude the toxic metalloid antimony have been discovered in various microorganisms. Here we identified a major facilitator superfamily (MFS) transporter, AntB, on the chromosome of the arsenite-oxidizing bacterium Ensifer adhaerens E-60 that confers resistance to Sb(III) and Sb(V). The antB gene is adjacent to gene encoding a LysR family transcriptional regulator termed LysR, which is an As(III)/Sb(III)-responsive transcriptional repressor that is predicted to control expression of antB.

When advisors do not know what is best for advisees: Uncertainty inhibits advice giving.

While seeking advice can be beneficial for advisees, advisors may not always possess the necessary knowledge to provide appropriate guidance. Poor-quality advice can mislead advisees rather than offering assistance. Despite the research interest in advisees, few studies have investigated advisors' psychological and behavioral responses, especially when they faced uncertainty regarding the optimal course of action for advisees.

The effects of different electrode materials on the electric field-assisted co-composting system for the soil remediation of heavy metal pollution.

The electric field-assisted composting system (EACS) is an emerging technology that can enhance composting efficiency, but little attention has been given to electrode materials. Herein, an EACS was established to investigate the effects of electrode materials on humic substance formation and heavy metal speciation. Excitation-emission matrix analysis showed that carbon-felt and stainless-steel electrodes increased humic acid (HA) by 48.

Immobilization of Pb in waste water and soil by tourmaline-biochar composites (TBs): Characteristics and mechanisms.

Novel tourmaline-biochar composites (TBs) were synthesized by introducing tourmaline (TM) into pomelo peel biochar (BC). The surface properties of TBs and BC were studied and the adsorption performances for Pb were investigated. Compared to pristine BC, the adsorption ability for Pb on TBs was enhanced with the increase of TM in TBs, and up to 514.

Relationship between nightmare distress and depressive symptoms in Chinese emergency department nurses: A cross-sectional study.

Background: Most of the recent research on nightmare distress and depressive symptoms has focused on adolescents and students, with less research on the nurse population. Emergency department nurses are at high risk for nightmare distress and depressive symptoms, but no studies have been conducted to explore the relationship between the two; thus, further investigation is needed.

Aim: To understand the relationship between nightmare distress and depressive symptoms among emergency department nurses in China.

A brief history of metal recruitment in protozoan predation.

Metals and metalloids are used as weapons for predatory feeding by unicellular eukaryotes on prokaryotes. This review emphasizes the role of metal(loid) bioavailability over the course of Earth's history, coupled with eukaryogenesis and the evolution of the mitochondrion to trace the emergence and use of the metal(loid) prey-killing phagosome as a feeding strategy. Members of the genera Acanthamoeba and Dictyostelium use metals such as zinc (Zn) and copper (Cu), and possibly metalloids, to kill their bacterial prey after phagocytosis.

Unraveling the link between hypertension and depression in older adults: a meta-analysis.

Objective: To perform a meta-analyses to understand the current status of and risk factors for depression in older adults with hypertension.

Methods: Eight electronic databases and two clinical trial registries were searched to identify studies examining the incidence of and risk factors for depression among older adults with hypertension. The databases were searched from inception to June 2023.

Risk factors for perimenopausal depression in Chinese women: a meta-analysis.

Objective: To systematically evaluate the risk factors for perimenopausal depression in Chinese women and to provide a basis for screening perimenopausal women at high-risk for depression.

Methods: A computer search of seven databases, including SinoMed, PubMed, Web of Science, and so on, and two clinical trial registries on the risk factors for depression in Chinese women during perimenopause was conducted for meta-analysis. The search time limit was from the establishment of the database to December 2022.

Adaptation to metal(loid)s in strain Mucilaginibacter rubeus P2 involves novel arsenic resistance genes and mechanisms.

Arsenic is a ubiquitous environmental toxi substance that affects human health. Compared to inorganic arsenicals, reduced organoarsenicals are more toxic, and some of them are recognized as antibiotics, such as methylarsenite [MAs(III)] and arsinothricin (2-amino-4-(hydroxymethylarsinoyl)butanoate, or AST). To date, organoarsenicals such as MAs(V) and roxarsone [Rox(V)] are still used in agriculture and animal husbandry.