Plantation forest stand age affects the characteristics and the chlorine reactivity of soil-derived dissolved organic matter.

Plantation forest areas are rapidly expanding worldwide. Forests at different stand ages exhibit distinct patterns in litterfall input, soil microbial diversity, and enzyme activity, all of which potentially affect the properties of dissolved organic matter (DOM). DOM is an important precursor of disinfection byproducts (DBPs).

α-Cyclodextrin mediated 3D printed ceramic/polymer composite scaffolds for immunomodulation and osteogenesis in bone defect repair.

Bone tissue engineering scaffolds for bone defect treatment face numerous challenges, including mechanical mismatches and the lack of immune microenvironment modulation, often leading to implant failure. In this study, an innovative drug-loaded bioinspired ceramic/polymer composite scaffold was designed and fabricated using extrusion-based 3D printing technology, incorporating α-cyclodextrin (αCD) in a novel approach to improve interfacial compatibility and drug-loading efficiency. Hydroxyapatite (HA), the main component of natural bone, was employed as the inorganic phase to mimic the mineral structure of bone tissue.

Interpretable machine learning for predicting key hazardous properties of chemicals.

Accurate prediction of hazardous chemical properties such as toxicity, flammability, reactivity, and reactivity with water (RW) is essential for the safe handling, storage, and transport of chemicals in industrial and environmental contexts. Traditional experimental methods are time-consuming, costly, and struggle to capture the complex, dynamic relationships between molecular structure and hazardous properties. Moreover, many conventional models lack interpretability, making it difficult to understand the underlying molecular interactions driving these properties.

Association between accelerometer-measured physical activity volume and sleep duration in older adults: a cross-sectional interpretable machine learning analysis.

Objective: This study aimed to examine the relationship between physical activity volume and sleep duration in older adults, using objective monitoring data to investigate their non-linear association and threshold effects, thereby providing references for developing exercise programs to improve sleep duration.

Methods: The study used two consecutive waves of NHANES cross-sectional data (2011-2014) as the derivation cohort and NHANES 2005-2006 data as the validation cohort. Analysis of the derivation cohort included weighted univariate analysis, weighted multivariate logistic regression, and interpretable machine learning analysis.

Polarized Luminescence in Halide Perovskite Nanomaterials.

Halide perovskite nanomaterials have emerged as a transformative platform for generating and manipulating polarized luminescence, offering unprecedented opportunities for next-generation optoelectronic technologies. This review comprehensively examines recent advances in engineering both linearly polarized luminescence (LPL) and circularly polarized luminescence (CPL) from perovskite nanostructures, focusing on structural design principles, chirality transfer mechanisms, and performance optimization strategies. Methods are systematically analyzed to achieve polarized emission, including anisotropic nanocrystal growth, chiral ligand functionalization, and liquid crystal-mediated alignment, while highlighting critical optical factors such as dissymmetry factors and photoluminescence quantum yield.

Reprogramming Macrophage Function via Cholesterol Modulation and Redox Signaling Using a Multifunctional Nanoplatform for Postoperative Breast Cancer Management.

Postoperative recurrence and infection remain major obstacles to effective breast cancer recovery, often driven by cholesterol-mediated macrophage dysfunction. Here, we report the development of CuMPmC, a multifunctional nanoplatform constructed through copper-dopamine chelation and self-polymerization, functionalized with mannose for selective targeting of M2-like macrophages, and loaded with cholesterol oxidase (ChOx). CuMPmC depletes macrophage membrane cholesterol via ChOx-mediated oxidation, enhancing plasma membrane fluidity and thereby promoting macrophage chemotaxis.

A review of visual perception technology for intelligent fruit harvesting robots.

With the development of smart agriculture, fruit picking robots have attracted widespread attention as one of the key technologies to improve agricultural productivity. Visual perception technology plays a crucial role in fruit picking robots, involving precise fruit identification, localization, and grasping operations. This paper reviews the research progress in the visual perception technology for fruit picking robots, focusing on key technologies such as camera types used in picking robots, object detection techniques, picking point recognition and localization, active vision, and visual servoing.

Competitive Chirality Induction in Two-dimensional Germanium Iodide Perovskites Enabling Highly Anisotropic Nonlinear Optical Response.

Chiral metal halide perovskites (CMHPs) are a promising class of chiroptical materials with significant potential applications in chiral-optoelectronic and chiral-spintronic devices. However, their chirality induction generally stems from the incorporation of chiral ligands, which constitutes compositional diversity and functional versatility. Herein, we report a significant chiral expression resulting from two distinct mechanisms: chirality transfer induced by chiral organic cations and mirror symmetry breaking driven by stereochemically active lone pairs, both contributing to controlled chirality induction.

Substituting Superhalogens for the Fluorine Atom of 5-Fluorouracil: A New Approach to Modulate its Structure, Electronic Properties, and Chemical Reactivity.

The development of 5-fluorouracil (5-FU) analogs contributes to overcome its side effects and drug resistance. To explore more 5-FU analogs, the substituent effect of BO, NO, and PO on the geometric structure, electronic properties, and reactivity of 5-FU has been systematically studied by density functional theory calculations and molecular docking in this article. It is revealed that the introduced superhalogens can not only form stable covalent bonds with the pyrimidine ring, like the original F atom in 5-FU, but also pose significant effect on the geometric and electronic structures of 5-FU.

Electroacupuncture therapy improves cognitive dysfunction after ischemic stroke in Sprague-Dawley rats by adjusting the lncRNA-MEG3/miR-4640-3p axis.

Background: Ischemic stroke (IS) is a common disease that can cause cognitive dysfunction. Electroacupuncture (EA) is an effective way to alleviate cognitive dysfunction, but its molecular regulatory mechanism is still unclear. Long noncoding RNA-MEG3 (MEG3) is an important factor in the incidence and progression of IS.

Decomposition characteristics of bark litter in subtropical plantations.

Senesced bark litter of collected from pure plantation was placed in four stand types, including pure plantation (control), - mixed plantation (-), - mixed plantation (-), and -- mixed plantation (--). During a 540-day decomposition period, litterbags were retrieved every 60 days to measure remaining dry mass and the contents of carbon (C), nitrogen (N), phosphorus (P), cellulose, and lignin. We analyzed decomposition characteristics, home-field advantage (HFA), nutrient release, and key drivers in mixed plantations.

Long-term nitrogen addition facilitates phosphorus uptake by the roots of .

We conducted a field nitrogen addition experiment in a subtropical natural forest taking ammonium nitrate as nitrogen source. There were three nitrogen addition levels: 0, 20, and 80 kg N·hm·a, corresponding to the control, low nitrogen, and high nitrogen treatments, respectively. In the ninth year of treatments, we collected samples of surface soil from 0 to 15 cm to determine soil basic chemical properties, microbial community composition, acid phosphatase activity, and analyzed leaf nitrogen and phosphorus contents, leaf phosphorus fractions, and fine root biomass and phosphorus content in .

Ultrasensitive and specific fluorescent probe towards sulfites to monitor its residue in the traditional herbs.

As one of the traditional pretreatments for many Chinese herbal medicines, Sulfur Fumigation might remain residual sulfites which would endanger human health when overdosage. It should be invaluable to monitor their residual content in food or medicines. Abundant novel fluorescent probes for sulfur dioxide were designed, constructed and evaluated with excellent sensitivity, but lack in specificity.

Adaptive or maladaptive music-listening coping strategy: How does neuroticism use music after experiencing a romantic relationship breakup?

Romantic relationship breakups are common experiences among young people and are associated with negative emotions that can jeopardize psychological well-being. Additionally, those with higher neuroticism may have greater emotional sensitivity towards the impact of music, as they tend to exhibit more negative and unstable emotional traits. As a result, they may be more inclined to control emotions by using music as a coping strategy.

Spatiotemporal patterns and propagation of meteorological and hydrological drought in a humid basin of Southeast China.

Droughts have caused great damage due to climate change and intensified human activities. Quantifying the propagation law of meteorological drought (MD) to hydrological drought (HD) is essential for drought warning, defense and adaption. In this study, based on the standardized precipitation evapotranspiration index (SPEI) and standardized runoff index (SRI), we analyzed the spatiotemporal characteristics and propagation patterns of MD and HD 1975-2020 in Minjiang River Basin (MRB) located in Southeast China.

Tuning the Structure and Photoluminescence of [SbCl]-Based Halides via Modification of Imidazolium-Based Cations.

Structure-property relationships in imidazolium-based hybrid Sb(III) chlorides provide critical guidance for designing high-performance materials. Three zero-dimensional metal halides, namely, [Cmmim]SbCl (, [Cmmim] = 1-propyl-2,3-dimethylimidazolium), [Cmmim]SbCl (, [Cmmim] = 1-pentyl-2,3-dimethylimidazolium), and [Cmim]SbCl (, [Cmim] = 1-pentyl-3-methylimidazolium), are synthesized by ionothermal methods. These compounds exhibit markedly distinctly photophysical properties at their optimal excitation wavelengths.

Contribution and Regulation of HIF-1α in Testicular Injury Induced by Diabetes Mellitus.

Diabetes mellitus, as a metabolic disorder, has received growing attention for its detrimental effects on the male reproductive system (particularly the testes) manifesting as increased oxidative stress, reduced blood perfusion, heightened inflammation, and germ cell apoptosis under hyperglycemic conditions. Hypoxia-inducible factor (HIF)-1α, a pivotal transcription factor in cellular hypoxia responses, plays a crucial role in regulating metabolism, angiogenesis, and apoptosis. Emerging evidence underscores its significant physiological and pathological roles in diabetic testicular injury.

Cation Engineering Enhanced Moisture Resistance in Centimeter-Sized Lead-Free Halide Perovskite Crystal for Ultrastable X-Ray Detection.

Halide perovskites, particularly those that are lead-free, have garnered significant attention owing to their eco-friendly nature and exceptional performance in X-ray detection. Nevertheless, despite their promising potential, halide perovskites suffer from structural instability in moist environments, which reduces device reliability. Herein, a cation engineering strategy involving the substitution of N-acidic protons with methyl groups of aniline is employed to synthesize a moisture-resistant lead-free halide perovskite (NDMA)BiI (NDMA = N,N-dimethylanilinium).

Negative differential resistance in memristive systems: historical evolution, mechanisms and neuromorphic applications of niobium oxide devices.

The synergy between the memristive effect and negative differential resistance (NDR) offers promising prospects for advancing electronic devices and circuits. Predictable outcomes include the development of devices with improved performance and functionality that are applicable across a wide range of fields, from computing architecture to neuromorphic engineering. Despite the growing body of literature exploring this convergence, the effective implementation of the NDR effect in memristors faces many challenges.

Three New Pyrones With Antifungal Activity From Myrothecium verrucaria ACCC 38039.

Myrothecium species have been recognized as prolific producers of biologically active secondary metabolites. Despite this, a substantial portion of their biosynthetic potential remains untapped. In this study, Myrothecium verrucaria ACCC 38039 was cultivated on a rice-based medium at 25°C for 30 days to explore its secondary metabolite profile.

Dynamic Regulation for the Well-Distribution of Electrons and Zn Ions Achieving Uniform Zn Redox in Ah-Scale Pouch Cells.

Uneven distribution of the electric field and zinc ion (Zn), and crosstalk effects all lead to irreversible redox of Zn, eventually accelerating the failure of various Zn-metal energy storage devices, especially Ah-scale pouch batteries. This study pioneers a strategy to dynamically regulate electrons and Zn ions for uniform Zn redox, in which a series of additive molecules with varying electron delocalized spaces is designed to verify this dynamic regulation mechanism. Due to the large electron delocalized space, the additives with delocalized π-bonds and ‒COOH form a stable molecular layer for the Zn anode.

Parental/grandparental education involvement and adolescents' learning engagement: a moderated mediation model.

Parental and grandparental involvement are associated with students' educational success. However, few studies have explored the different effects of parental and grandparent education involvement on students' academic performance. This study constructed a hypothetical model of parental/grandparental education involvement and adolescents' learning engagement, with personal growth initiative as the mediating variable and self-education expectation as the moderating variable, to investigate how parental/grandparental education involvement influences learning engagement.

Prognostic Value of Tumor Infiltrating Lymphocytes in Luminal B Breast Cancer Based on Multiphoton Microscopy.

This study investigates the prognostic value of tumor-infiltrating lymphocytes (TILs) in luminal B breast cancer patients using multiphoton microscopy (MPM) and evaluates their association with 5-year disease-free survival (DFS). We obtained unlabeled MPM images from 213 patients, quantified the frequency of TILs, and assigned a TILs-score to each patient using ridge regression analysis. In addition, compared with single CLI-score model, the nomogram model, which integrated the TILs-score model with CLI-score model, further enhanced the predictive power for the luminal B subgroup.

3D Hydrogen-Bonded Organic Framework Assembled From 1D Coordination Polymers for Efficient Gas Dehydration.

Two -(2D) and three-dimensional (3D) porous coordination polymers have been extensively explored for their porous nature and thus gas separation, but one-dimensional (1D) materials remain much less explored due to their reliance on weaker, non-covalent interactions to sustain the permanent porosity. Recent significant advances on the construction of porous hydrogen-bonded organic frameworks (HOFs) through synergistic weak interactions have provided us with the promise and motivated us to explore porous HOFs using 1D coordination polymers (CPs), and their multifunctional properties. In this work, we present such a HOF, [Cu(bpy)(HPO)∙HO] (ZNU-30), constructed from a linear CP via hydrogen bonds, C─H⋯π, and π-π interactions.