[Characteristics of VOCs Emissions from Pesticide Use Sources Based on Pesticide Dosage Forms Analysis： A Case Study of Beijing].

To analyze the emission characteristics of VOCs from pesticide use sources in Beijing, the distribution of commonly used pesticides and dosage forms in Beijing was obtained through on-site research, and the VOC content of pesticides in different dosage forms was examined using laboratory testing methods. The emission factors of pesticide VOCs for localized dosage forms in Beijing were established, an inventory of pesticide use source VOCs was compiled, and the spatial and temporal distribution characteristics of pesticide use source VOCs were analyzed. The results indicated that ① Pesticide dosage forms were the main factors affecting the emission of VOCs from pesticides, and when accounting for VOC emissions from pesticide sources, it is necessary to know the types of pesticides and active ingredients in the target area and obtain information on pesticide dosage forms simultaneously.

Triplet Network for One-Shot Raman Spectrum Recognition.

Raman spectroscopy is widely used for material detection due to its specificity, but its application to spectral recognition often faces limitations due to insufficient training data, unlike fields such as image recognition. Traditional machine learning or basic neural networks are commonly used, but they have limited ability to achieve high precision. We have proposed a novel approach that combines the Triplet network (TN) and K-nearest neighbor (KNN) techniques to address this issue.

n- to p-Type Conductivity Transition of LuN@C Due to Anisotropic Deformation of Fullerene and Pyramidalization of Endohedral Clusters.

The endohedral fullerene LuN@C was examined using in situ high-pressure measurements, which included electrical transport, Fourier-transform infrared spectroscopy, and Raman spectroscopy, in combination with theoretical calculations. LuN@C was found to undergo a reversible n- to p-type conversion at ∼8.9 GPa.

Ethnobotanical study on factors influencing plant composition and traditional knowledge in homegardens of Laifeng Tujia ethnic communities, the hinterland of the Wuling mountain area, central China.

Background: A homegarden is a conventional small-scale agricultural ecosystem dominated predominantly by humans. Homegarden plants, which are plants with specific functionalities that are either cultivated or consciously preserved within the homegarden, are the most critical elements of the homegarden and are capable of providing a multitude of products and services. Recognized as one of China's biodiversity hotspots, the Wuling mountain area has long been inhabited by multiple ethnic groups, each of which has accumulated a wealth of traditional knowledge.

Study of the ability of polysaccharides isolated from Zizania latifolia to promote wound healing in mice via in vitro screening and in vivo evaluation.

Swollen culms of Zizania latifolia possess a peculiar flavor, nutritional value and health-promoting effects. This study investigated the wound healing ability of polysaccharides isolated from Zizania latifolia (ZLP). Through in vitro assays, ZLP demonstrated negligible cytotoxicity and promoted the migration and phagocytosis of Staphylococcus aureus by macrophages where ZLP-2 had a significantly greater effect.

[Pollution Characteristics and Source Apportionment of Volatile Organic Compounds in Typical Solvent-using Industrial Parks in Beijing].

The BCT-7800A PLUS VOC online monitor system was employed to measure ambient volatile organic compounds （VOCs） in a typical solvent-using industrial park in Beijing. From January to June 2023, the pollution characteristics, source apportionment, and ozone formation potential（OFP）of VOCs were studied, and the results of a comparative analysis were also discussed between heating and non-heating periods. The results indicated that VOC concentrations from January to June 2023 were （104.

N ring: A building block for constructing 1D and 2D polymeric nitrogen frameworks.

Exploring the fundamental building block is essential for constructing functional materials with extended topological configurations. In the polymeric nitrogen system, no fundamental building blocks have been reported so far. Here, we successfully synthesize the buckled 1-dimensional (1D) band-shaped and 2-dimensional (2D) layered polymeric nitrogen frameworks with N ring as a fundamental building block for the first time.

Ethnobotany study on wild edible plants used by the Tujia ethnic group in Laifeng, southwest Hubei, China.

Background: Wild edible plants hold a significant position in the lives of local residents, serving as a primary food source or supplement. Laifeng County, located in the hinterland of the central mountainous area of China, boasts abundant wild edible plant resources. The Tujia people, residing here for generations, have accumulated a wealth of traditional knowledge in the long-term practice of utilizing wild edible plants.

NaIO/air-initiated phosphorylation of alcohols with H-phosphine oxides for the construction of P(O)-O bonds in water.

A facile and efficient protocol for P(O)-O bond formation was discovered through NaIO/air-initiated phosphorylation of alcohols with H-phosphine oxides in water. This reaction showed good functional group tolerance and a broad substrate scope, providing an alternative method for constructing P(O)-O bonds. Mechanistic studies suggested that a phosphoryl radical-involving process from H-phosphine oxides facilitated the phosphorylation of alcohols under air.

Integrated Sensing Platform Validated for the Efficient and On-Site Screening of Amine-Containing Illicit Drugs.

Efficient and reliable technologies for the on-site detection of illicit drugs are important in drug-facilitated crime investigations. However, the development of such technologies is challenging. Based on the synthetic optimization, introducing a boron ester functional group to the two furanic indicators endows the stimulus-responsive properties synergistically.

Ambient-Condition Recoverable Polymeric N Discovered from the Predicted Zr-N Compounds.

Polynitrogen has been widely studied recently as a rising star of high energy density materials. Here, we performed a systematic study of the Zr-N compounds in the N-rich region by the first-principles method. The high-pressure phase diagram of the Zr-N system is enriched by proposing five new compounds.

The impact of virtual reality on student engagement in the classroom-a critical review of the literature.

Objective: The purpose of this review is to identify the impact of virtual reality (VR) technology on student engagement, specifically cognitive engagement, behavioral engagement, and affective engagement.

Methods: A comprehensive search of databases such as Google, Scopus, and Elsevier was conducted to identify English-language articles related to VR and classroom engagement for the period from 2014 to 2023. After systematic screening, 33 articles were finally reviewed.

Defect-Healed Carbon Nanomembranes for Enhanced Salt Separation: Scalable Synthesis and Performance.

Carbon nanomembranes (CNMs), with a high density of subnanometer channels, enable superior salt separation performance compared to conventional membranes. However, defects that occur during the synthesis and transfer processes impede their technical realization on a macroscopic scale. Here, we introduce a practical and scalable interfacial polymerization method to effectively heal defects while preserving the subnanometer pores within CNMs.

Effects of host identity on the gut microbiota: A comparative study on three microtinae species.

Background: Gut microbiota exert an immense effect on host health and host environmental adaptation. Furthermore, the composition and structure of gut microbiota are determined by the environment and host genetic factors. However, the relative contribution of the environment and host genetic factors toward shaping the structure of gut microbiota has been poorly understood.

Moral sensitivity and caring behavior in nursing interns: the mediating role of empathy.

Background: The main purpose of this study is to analyze the relationship between moral sensitivity, empathy, and caring behaviors and to explore the mediating effect of empathy on moral sensitivity and caring behaviors of nursing interns.

Methods: A cross-sectional survey was conducted from August to September 2022 in which 261 nursing interns from two Grade 3A Hospitals in Xi'an participated. The questionnaires used in the survey include the General Information Questionnaire (GIQ), the Moral Sensitivity Questionnaire-Revised Version translated into Chinese (MSQ R-CV), the Chinese version of the Jefferson Empathy Scale (JSE), and the Chinese version of the Caring Behavior Inventory (C-CBI).

WeChat mini program in laboratory biosafety education among medical students at Guangzhou Medical University: a mixed method study of feasibility and usability.

Background: Laboratory biosafety should be a priority in all healthcare institutions. In traditional laboratory safety teaching students typically receive knowledge passively from their teachers without active involvement. The combination of experiential learning and mobile learning may provide students with greater engagement, retention, and application of knowledge.

Foliar application of plant-derived peptides decreases the severity of leaf rust (Puccinia triticina) infection in bread wheat (Triticum aestivum L.).

Background: Screening and developing novel antifungal agents with minimal environmental impact are needed to maintain and increase crop production, which is constantly threatened by various pathogens. Small peptides with antimicrobial and antifungal activities have been known to play an important role in plant defense both at the pathogen level by suppressing its growth and proliferation as well as at the host level through activation or priming of the plant's immune system for a faster, more robust response against fungi. Rust fungi (Pucciniales) are plant pathogens that can infect key crops and overcome resistance genes introduced in elite wheat cultivars.

Pharmacokinetics, tissue distribution, and subacute toxicity of oral carrageenan in mice.

Carrageenan (CGN) is a typical sulfated polysaccharide widely applied in the food and pharmaceutical industries. Its in vivo behavior plays vital roles in understanding structural and biological functional relationships. The lack of UV chromophores in highly sulfated polysaccharides presents a challenge for their in vivo behavior studies.

Nitrogen-rich Ce-N compounds under high pressure.

Four high-pressure N-rich compounds (2-CeN, 2-CeN, 1̄-CeN, and 1̄-II-CeN) are proposed using first-principles calculations. Novel polymeric units (a heart shaped layered structure, chain-like N rings, and two new banded structures) in four cerium nitrides are reported for the first time in this study. The analyses of electronic structures and bonding properties show that the charge transfer between Ce and N atoms promotes the formation of the Ce-N ionic bond and N-N covalent bond, which play an important role in stabilizing the nitrogen skeleton.

High-solution emission characters and health risks of volatile organic compounds for sprayers in automobile repair industries.

The increasing automobile repair industries (ARIs) with spray facilities have become an important volatile organic compound (VOC) pollution source in China. However, the VOC health risk assessment for long-term exposure in ARIs has not been well characterized. In this study, though sampled VOCs from 51 typical ARIs in Beijing, the relationship between emission patterns, average daily exposure concentrations (EC), and health risks was comprehensively analyzed with the health assessment method.

Solvation enhanced long-range proton transfer in aqueous phase for glycolaldehyde hydrogenation over Ru/C catalyst.

The catalytic hydrogenation of biomass-derived chemicals is essential in chemical industry due to the growing demand for sustainable and renewable energy sources. In this study, we present a comprehensive theoretical investigation regarding the hydrogenation of glycolaldehyde to ethylene glycol over a Ru/C catalyst by employing density functional theory and ab initio molecular dynamics simulations. With inclusion of explicit solvation, we have demonstrated that the glycolaldehyde hydrogenation is significantly improved due to the fast proton transfer through the hydrogen bond network.

An active derivatization detection method for inline monitoring the isolation of carbohydrates by preparative liquid chromatography.

Polysaccharides have unique physio-chemical properties and various biological functions and have rapidly expanded interest over the last two decades. The purification of polysaccharides and their degraded oligosaccharides is challenging because carbohydrates have no chromophore and need a proper detector to monitor the chromatographic elution process. This study proposed an active derivatization detection (ADD) method based on active splitting from post-column flow, a microchannel reactor for efficient derivatization of polysaccharide reducing sugars with p-hydroxybenzoic acid hydrazide, and in-line detection by the UV detector of liquid chromatography system.

Taurine Regulates the Expression of Interleukin -17/10 and Intestinal Flora and Protects the Liver and Intestinal Mucosa in a Nonalcoholic Fatty Liver Disease Rat Model.

Purpose: To investigate the intestinal inflammatory response and the abundance of intestinal bacteria in rats with high-fat diet (HFD)-induced nonalcoholic fatty liver disease (NAFLD) and assess the intervention effects of taurine (TAU).

Methods: Forty male Sprague-Dawley rats were randomly divided into five groups: group I, normal diet and normal saline gavage; group II, normal diet and TAU gavage; group III, HFD and normal saline gavage; group IV, HFD and TAU gavage (from the 1st week); group V, HFD and TAU gavage (from the 10th week). At the end of the 16th week, all the animals were sacrificed.