How parental mediation affects adolescents' problematic smartphone use: the chain mediating role of basic psychological needs and positive outcome expectations.

Purpose: Problematic smartphone use can significantly jeopardize adolescents' academic development as well as their physical and mental health. Although previous studies have explored the role of parental mediation strategies in adolescents' problematic smartphone use, the underlying mechanisms remain unclear. This study aims to investigate the relationship between parental mediation and adolescents' problematic smartphone use, with a specific focus on the chain mediation effects of basic psychological needs and positive outcome expectations.

Analysis of Incidence Trends and Predictions of Acute Hepatitis C in China Based on the Age-Period-Cohort Model.

Objective: To analyze the incidence trends of acute hepatitis C (AHC) in China from 1990 to 2021, predict future trends, and explore the drivers of AHC incidence.

Methods: Data on AHC incidence in China were collected from the Global Burden of Disease (GBD) 2021 database. Age-period-cohort (APC) model was used to examine the effects of age, period, and birth cohort.

Coaxially end-pumped passively Q-switched orthogonally-polarized dual-crystal Tm,Ho:LLF laser at 2050nm and 2052nm.

A coaxially end-pumped passively Q-switched orthogonally-polarized dual-wavelength laser at 2 µm with dual Tm,Ho:LuLiF (LLF) laser crystals as the gain media and a Cr:ZnS crystal as the saturable absorber is reported for the first time, as far as we know. The maximum average output powers of 63.4 mW at 2050nm in P-polarization direction and 43.

Research on Nonlinear Error Compensation and Intelligent Optimization Method for UAV Target Positioning.

The realization of high-precision target positioning requires the systematic suppression of nonlinear perturbations in the UAV optoelectronic system and the optimization of the cumulative deviation of coordinate transformations through error transfer modeling. This study proposes an error allocation method based on the improved raccoon optimization algorithm (KYCOA) to resolve the problem of degradation of positioning accuracy due to multi-source error coupling during UAV target positioning. Firstly, a multi-coordinate system transformation model is established to analyze the nonlinear transfer characteristics of the error, and the Taylor expansion is used to linearize the error transfer process and derive the synthetic error model under the geocentric coordinate system.

Multiomics Reveals the Mechanism of Adaptation to Combined Hypersaline, Alkaline, and Elevated Temperature Environments.

The halophilic alkalithermophile grows optimally at the combined extremes of 3.3-3.9 M Na, pH 9.

Cross and unique stress adaptation strategies of the polyextremophile Natranaerobius thermophilus to individual high salt, alkaline pH, and elevated temperature.

N. thermophilus is the first true anaerobic halophilic alkalithermophile. It employs a unique dual mechanism for hypersaline adaptation, utilizing both "compatible solutes" and "salt in" strategies.

Comparative analysis of dehazing algorithms on real-world hazy images.

Images captured in adverse weather conditions (haze, fog, smog, mist, etc.) often suffer significant degradation. Due to the scattering and absorption of these particles, various negative effects, such as reduced visibility, low contrast, and colour distortion are introduced into the image.

Evaluation of In Vitro Production Capabilities of Indole Derivatives by Lactic Acid Bacteria.

Lactic acid Bacteria (LAB) convert tryptophan to indole derivatives and induce protective IL-22 production in vivo. However, differences in metabolizing capabilities among LAB species have not been widely investigated. In the present study, we compared the capabilities of 186 LAB strains to produce four kinds of indole derivatives, including indole-3-carboxaldehyde (IAId), indole-3-lactic acid (ILA), indole-3-propanoic acid (IPA), and indole-3-acetic acid (IAA).

Physical exercise can enhance meaning in life of college students: the chain mediating role of self-efficacy and life satisfaction.

Meaning in life refers to an individual's capacity to understand and grasp the meaning of their own existence, as well as being aware of the goals, tasks, or missions in their personal life. Previous studies have found that college students lack meaning in life, but physical exercise can enhance it. In this study, 3,196 college students completed self-report questionnaires to assess self-efficacy, life satisfaction, physical exercise, and meaning in life.

Effects of Alkaline Hydrogen Peroxide and Cellulase Modifications on the Physicochemical and Functional Properties of Dietary Fiber.

Besides active substances, is rich in dietary fiber (DF), but it is often wasted or discarded and not put to good use. In order to improve the function of DF, it was modified using alkaline hydrogen peroxide (AHP) and cellulase (EM). Compared to the control DF (ODF), the DF modified using AHP (AHDF) and EM (EMDF) had a looser microstructure, lower crystallinity, and higher oil holding capacity (OHC) and cation exchange capacity (CEC).

Studying of the promotion mechanism of QM3 on wheat seed germination based on β-amylase.

The response of β-amylase in early stage germination of wheat seeds to QM3 was mainly focused on to elucidate the promotion mechanism of QM3. The results showed that the changes in apparent activity of amylase and endosperm liquefaction after the strain QM3 treatment were much more obvious than that of the control group; the activity of β-amylase treated with the different concentrations of the strain QM3 increased significantly ( < 0.05) by 4% (10 CFU/mL) and 18.

Physicochemical properties, microstructures, nutritional components, and free amino acids of Pleurotus eryngii as affected by different drying methods.

In this study, we determined the influences of different drying techniques such as natural air (ND), hot-air (HD), vacuum (VD), infrared (ID), microwave (MD), and freeze drying (FD) methods on the color, shrinkage ratio (SR), rehydration ratio (RR), firmness, crispness, microstructures, nutritional components, and free amino acids of Pleurotus eryngii. The results showed that these parameters were markedly influenced by different drying techniques. Among them, FD was the most effective drying method which retained the main characteristics of the fresh P.

Establishment and application of a method for screening the therapeutic drugs of ethanol-induced liver injury based on cellular metabonomics.

A drug-screening method to test the capacity of drugs to protect against ethanol-induced liver injury based on cellular metabonomics was established and applied in this study. It screens for the ability to protect against ethanol-induced liver injury by considering changes in the cellular metabolites of human normal liver L-02 cells subjected to ethanol treatment. This method considers cellular metabolites as the main analytical index, principal component analysis and orthogonal partial least squares discriminant analysis as the main multi- and megavariate data analysis methods, and vitamin C as the standard substance to determine the ability to protect against ethanol-induced liver injury.

Spontaneous feedback for the simultaneous narrowing and elevation of fluorescence spectral lines.

Narrow linewidth and high intensity of the fluorescence spectra are two important elements to improve the accuracy and efficiency of related practical measurements, but so far they have not been achievable simultaneously. We propose a new approach to sharpen the linewidth and to heighten the intensity simultaneously. Rather than double coherent mechanisms, it uses the spontaneous emission of inverted atoms in a cavity below the threshold as a resource for feedback control.

Natronolimnobius aegyptiacus sp. nov., an extremely halophilic alkalithermophilic archaeon isolated from the athalassohaline Wadi An Natrun, Egypt.

An obligately aerobic extremely halophilic alkalithermophilic archaeon, strain JW/NM-HA 15, was isolated from the sediments of Wadi An Natrun in Egypt. Phylogenetic analysis based on 16S rRNA and rpoB' gene sequences indicated that it belongs to the family Natrialbaceae of the order Natrialbales. The closest relatives were Natronolimnobius baerhuensis IHC-005 and Natronolimnobius innermongolicus N-1311 (95.

Comparison study on antioxidant, DNA damage protective and antibacterial activities of eugenol and isoeugenol against several foodborne pathogens.

Eugenol and its isomer isoeugenol are both used as flavouring agents or food additives in food products, and have both some similar biological properties. However, the difference in biological activities between eugenol and isoeugenol is rarely studied. In this study, the profiles of antioxidant, DNA-protective effects and antibacterial activities of eugenol and isoeugenol against several common foodborne pathogens were investigated and compared under various experiment conditions.

Chemical Composition, Antioxidant, DNA Damage Protective, Cytotoxic and Antibacterial Activities of Cyperus rotundus Rhizomes Essential Oil against Foodborne Pathogens.

Cyperus rotundus L. (Cyperaceae) is a medicinal herb traditionally used to treat various clinical conditions at home. In this study, chemical composition of Cyperus rotundus rhizomes essential oil, and in vitro antioxidant, DNA damage protective and cytotoxic activities as well as antibacterial activity against foodborne pathogens were investigated.

Discovery and identification of potential biomarkers for alcohol-induced oxidative stress based on cellular metabolomics.

Biomarkers involved in alcohol-induced oxidative stress play an important role in alcoholic liver disease prevention and diagnosis. Alcohol-induced oxidative stress in human liver L-02 cells was used to discover the potential biomarkers. Metabolites from L-02 cells induced by alcohol were measured by high-performance liquid chromatography and mass spectrometry.

Chemical Composition, Antibacterial Properties and Mechanism of Action of Essential Oil from Clove Buds against Staphylococcus aureus.

The essential oil of clove has a wide range of pharmacological and biological activities and is widely used in the medicine, fragrance and flavoring industries. In this work, 22 components of the essential oil obtained from clove buds were identified. Eugenol was the major component (76.

Discovery of biomarkers for oxidative stress based on cellular metabolomics.

Oxidative stress has a close relationship with various pathologic physiology phenomena and the potential biomarkers of oxidative stress may provide evidence for clinical diagnosis or disease prevention. Metabolomics was employed to identify the potential biomarkers of oxidative stress. High-performance liquid chromatography-diode array detector, mass spectrometry and partial least squares discriminate analysis were used in this study.

Changes in physicochemical characteristics and free amino acids of hawthorn (Crataegus pinnatifida) fruits during maturation.

In this study, changes in physicochemical characteristics associated with fruit quality and free amino acids were investigated during maturation of hawthorn fruits. Significant differences in these parameters were found during maturation. The color turned progressively from mature green to semi-red, to reach bright red; the shape changed gradually from oval to round or approached round; the size, weight, and edible part (flesh/core ratio) of hawthorns increased while the density of intact fruits did not change.

C-Cl bond activation and catalytic hydrodechlorination of hexachlorobenzene by cobalt and nickel complexes with sodium formate as a reducing agent.

A benzyne cobalt complex, Co(η(2)-C6Cl4)(PMe3)3 (2), was generated from the reaction of hexachlorobenzene with 2 equiv. of Co(PMe3)4 through selective activation of two C-Cl bonds of hexachlorobenzene. Meanwhile, the byproduct CoCl2(PMe3)3 was also confirmed by IR spectra.