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Relationship between parenting stress and behavioral and emotional problems in preschool children: A mediation effect analysis

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World Journal of Psychiatry 2025年第1期15卷 128-136页

作者： Zhi-wei Fu Yue-jing li Ran Yu rui-Qing Guo li-Xia Gao sheng-Xia Zhao Department of Children's Health Shijiazhuang Maternity and Child Healthcare HospitalShijiazhuang 050000Hebei ProvinceChina

BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age *** To investigate the current status of family rearing,parental stress,and behavioral and emotional problems of preschool children and to analyze the mediating effect of the current status of family rearing on parental stress and behavioral/emo-tional *** We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September *** children and their parents were evaluated using a questionnaire ***'s correlation was used to analyze the correlation between child behavioral and emotional problems and parental stress and family rearing,and the structural equation model was constructed to test the mediating *** The score for behavioral/emotional problems of 258 preschool children was(27.54±3.63),the score for parental stress was(87.64±11.34),and the score for parental family rearing was(31.54±5.24).There was a positive correlation between the behavioral and emotional problems of the children and the“hostile/mandatory”parenting style;meanwhile,showed a negative correlation with the“support/participation”parenting style(all Plinical medical staff should provide correct and reasonable parenting advice to their parents to promote the mental health of preschool-age children.

关键词： Preschool children Parenting stress Children's behavioral and emotional problems Family rearing Mediating effect

Mitochondrial Proteomic Analysis of Cytoplasmic Male Sterility line and Its Maintainer in Wheat (Triticum aestivum L.)

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Agricultural Sciences in China 2010年第6期9卷 771-782页

作者： chen rui-hong liU wei ZHANG Gai-sheng YE jing-xiu Shaanxi Key Laboratory of Crop Heterosis/Northwest A＆F University Yangling 712100 t~R. China

To investigate the CMS mechanism of wheat on proteomic level and find the crucial proteins which related to fertility,mitochondria was isolated from young spike of wheat by differential centrifugation and Percoll density-gradient *** by marker enzyme assays and chlorophyll content,the mainly contaminants in the spike mitochondrial fraction were caused by peroxisomes,plastids and chloroplasts after the first discontinuous Percoll density gradient *** order to improve the purity of spike mitochondria,a second 28% Percoll self-forming density gradient centrifugation was further carried out,the result showed that the contaminants were decreased to negligible amount,meanwhile the integrity of mitochondria （88%） was improved to 90%.The spike mitochondria proteins extracted from uninucleate stage of （S）-1376A and （A）-1376B were separated by two-dimensional electrophoresis （2-DE）,and the silver stained gels were analyzed by PDQuest 2-DE software,about 326 protein spots could be visualized on the 2-DE maps,and also revealed a similar pattern between the male sterile line and its maintainer line,except 11 spots were differentially expressed.A total of five differentially expressed proteins were analyzed by matrix-assisted laser desorption ionization time of flight mass spectrometry （MALDI-TOF-MS）,three of them were identified as manganese superoxide dismutase and T5E216 following NCBInr database by the Mascot *** results may contribute to further understanding of the mechanisms of CMS in wheat.

关键词： mitochondria proteomics cytoplasmic male sterility two-dimensional electrophoresis MALDI-TOF-MS

Productivity enhancement in multilayered coalbed methane reservoirs by radial borehole fracturing

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Petroleum Science 2022年第6期19卷 2844-2866页

作者： rui-Yue Yang Gen-sheng li Xiao-Zhou Qin Zhong-wei Huang jing-Bin li Mao sheng Bin Wang State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China

Coalbed methane(CBM)is an important unconventional natural *** of multilayered CBM reservoir is still facing the challenge of low production *** borehole fracturing,which integrates radial jet drilling and hydraulic fracturing,is expected to create complex fracture networks in multilayers and enhance CBM *** main purpose of this paper is to investigate the mechanisms and efficacy of radial borehole fracturing in increasing CBM production in multiple ***,a two-phase flow and multi-scale 3 D fracture network including radial laterals,hydraulic fractures and face/butt cleats model is established,and embedded discrete fracture model(EDFM)is applied to handle the complex fracture ***,effects of natural-fracture nonuniform distribution are investigated to show the advantages of targeted stimulation for radial borehole ***,two field CBM wells located in eastern Yunnan-western Guizhou,China were presented to illuminate the stimulation efficiency by radial borehole *** results indicated that compared with vertical well fracturing,radial borehole fracturing can achieve higher gas/water daily production rate and cumulative gas/water production,approximately 2 times *** communications to cleats and sweet spots and flexibility in designing radial borehole parameters in different layers so as to increase fracture-network complexity and connectivity are the major reasons for production enhancement of radial borehole ***,the integration of geology-engineering is vital for the decision of radial borehole fracturing designing *** key findings of this paper could provide useful insights towards understanding the capability of radial borehole fracturing in developing CBM and coal-measure gas in multiple-thin layers.

关键词： Coalbed methane Multilayered coal beds Radial borehole fracturing Complex fracture networks Cleats distribution

Simulation of thermoacoustic waves by a pressure-based algorithm for compressible flows

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Acta Mechanica Sinica 2012年第3期28卷 819-824页

作者： wei li Qi-sheng chen Key laboratory of Microgravity Institute of MechanicsChinese Academy of Sciences15 Beisihuan West Road100190 BeijingChina

A modified SIMPLEC method which can solve compressible flows at low Mach number is introduced and used to study thermoacoustic waves induced by a rapid change of temperature at a solid wall and alternating- direction flows generated by thermoacoustic effects in a ta- pered resonator. The results indicate that the algorithm adopted in this paper can be used for calculating com- pressible flows and thermoacoustic waves. It is found that the pressure and velocity in the resonator behave as stand- ing waves, and the tapered resonator can suppress high- frequency harmonic waves as observed in a cylindrical res- onator.

关键词： Compressible flow Thermoacoustic wave Resonator. SIMPLEC

Recovery of titanium and vanadium from titanium–vanadium slag obtained by direct reduction of titanomagnetite concentrates

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Rare Metals 2022年第5期41卷 1688-1696页

作者： Xue-Jie liu De-sheng chen jing-Long Chu wei-jing Wang Yong-li li Tao Qi National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemistry and Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

A process of NaOH molten salt roasting-water leaching to treat titanium-vanadium slag obtained by direct reduction of titanomagnetite concentrates was investigated.X-ray diffraction(XRD), scanning electron microscopy(SEM) equipped with energy dispersive spectroscopy(EDS), and thermogravimetry-differential scanning calorimetry(TG-DSC) techniques were used to characterize the samples. The results show that anosovite(Mg_(x)Ti_(3-x)O_(5))and clinopyroxene [Ca(Ti,MgAl)(SiAl)_(2)O_(6)] are the major phases of titanium-vanadium slag. In the NaOH molten salt roasting process, titanium is converted to intermediate product Na_(2)TiO_(3) and vanadium is converted to water-soluble vanadate. The response surface methodology(RSM) was used to optimize the roasting process conditions. NaOH to slag mass ratio(N/S) and roasting temperature are the main influential factors. Under the optimal roasting conditions,i.e., roasting temperature of 550℃, N/S of 1.20, and roasting time of 80 min, the conversions of titanium and vanadium are 96.5 % and 93.0 %, respectively. In the water leaching process, Na_(2)TiO_(3) is converted to amorphous structure of H_(2)TiO_(3) since Na^(+)is exchanged with H^(+). Up to 93.0 % vanadium is leached out under the optimal leaching conditions. Titanium and vanadium in the titanium-vanadium slag can be separated and then recovered.

关键词： Recovery Titanium-vanadium slag Roasting Water leaching Titanomagnetite concentrates

Research progress on animal models of corneal epithelial-stromal injury

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International Journal of Ophthalmology(English edition) 2023年第11期16卷 1890-1898页

作者： li-rui liu Dan chen Si-Ting sheng jing-wei Xu Wen Xu Eye Center The Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310009Zhejiang ProvinceChina Zhejiang Provincial Key Laboratory of Ophthalmology Zhejiang Provincial Clinical Research Center for Eye DiseasesHangzhou 310009Zhejiang ProvinceChina Zhejiang Provincial Engineering Institute on Eye Diseases Hangzhou 310009Zhejiang ProvinceChina

A corneal epithelial-stromal defect is recognized as a major contributor to corneal *** the rising prevalence of blindness caused by corneal scarring,increasing attention has been focused on corneal epithelialstromal ***,the etiology and pathogenesis of these defects remain inadequately understood,necessitating further investigation through experimental *** modeling methods exist both domestically and internationally,each with distinct adaptive conditions,advantages,and *** review primarily aims to summarize the techniques used to establish optimal animal models of corneal epithelial-stromal injury,including mechanical modeling,chemical alkali burns,post-refractive surgery infections,and genetic *** intention is to provide valuable insights for studying the mechanisms underlying corneal epithelial-stromal injury and the development of corresponding therapeutic interventions.

关键词： cornea corneal epithelial-stromal defect corneal epithelial-stromal injury corneal scarring animal models

lipopolysaccharide-induced Trigeminal Ganglion Nerve Fiber Damage is Associated with Autophagy Inhibition

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Current Medical Science 2023年第3期43卷 489-495页

作者： Yong li jing li sheng-sheng wei jing DU Refractive Surgery Center Shaanxi Eye HospitalXi'an People's Hospital(Xi'an Fourth Hospital)Affiliated Guangren HospitalSchool of MedicineXi'an Jiaotong UniversityXi'an 710004China

Objective This study aimed to determine whether lipopolysaccharide(LPS)induces the loss of corneal nerve fibers in cultured trigeminal ganglion(TG)cells,and the underlying mechanism of LPS-induced TG neurite *** TG neurons were isolated from C57BL/6 mice,and the cell viability and purity were maintained for up to 7 ***,they were treated with LPS(1µg/mL)or the autophagy regulator(autophibib and rapamycin)alone or in combination for 48 h,and the length of neurites in TG cells was examined by the immunofluorescence staining of the neuron-specific proteinβ***,the molecular mechanisms by which LPS induces TG neuron damage were *** The immunofluorescence staining revealed that the average length of neurites in TG cells significantly decreased after LPS ***,LPS induced the impairment of autophagic flux in TG cells,which was evidenced by the increase in the accumulation of LC3 and p62 *** pharmacological inhibition of autophagy by autophinib dramatically reduced the length of TG ***,the rapamycin-induced activation of autophagy significantly lessened the effect of LPS on the degeneration of TG *** LPS-induced autophagy inhibition contributes to the loss of TG neurites.

关键词： lipopolysaccharide autophagy trigeminal ganglion neurons

Synthesis and characterization of SBA-15 macrospheres with hierarchical pore structure

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Chinese Chemical Letters 2009年第11期20卷 1371-1375页

作者： Dong liang Yan Wang jing hong Ma Jian hong liu Shu wei chen rui Feng li Key Laboratory of Coal Science and Technology MOE College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China

The new macroscopic-scale SBA-15 spheres with diameter of 0.2-0.5 mm are prepared by a sol-gel method, in which the tetrabutylorthosilicate （TBOS） is used as silicon source and triblock copolymer （P123） and polyoxyethylene octylphenol ether （OP- 10） are used as templates. The resulting spherical samples are characterized by XRD, N2 adsorption-desorption, TEM and SEM methods. The results show that the inner structure of SBA-15 macrospheres has macroporous channels （0.5 um） and mesoporous skeleton （4-5 nm）. These SBA-15 macrospheres with the hierarchical pore structure demonstrate high absorption capacity for Emodin molecules.

关键词： Nanostructures Sol-gel growth Electron microscopy Adsorption

Temperature gradient driving interdiffusion interface and composition evolution in Ni-AI-Cr alloys

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Rare Metals 2022年第9期41卷 3186-3196页

作者： Yong-sheng li Hui-Yu Wang jing chen Shuai-Ge Yang Peng Sang hong-li Long School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing210094China Key Laboratory of Advanced Metallic and Intermetallic Materials Technology Ministry of Industry and Information Technology of People’s Republic of ChinaNanjing210094China

The interdiffusion interface microstructures and composition evolution of Ni-Al-Cr/Ni-Al-Cr layered alloys under different temperature gradients were studied using phase-field simulation.A precipitate-free zone forms near the interface of the layered alloys,and the interface does not move with time under temperature *** Cr concentrations in the alloy layers are different,Al diffuses from a low-to high-temperature region,whereas Cr from a high-to low-temperature *** width of the precipitate-free zone changes from 0.5 to 2.5μm as the temperature gradient changes fromΔT=0.625 K·μm^(−1) to 1.250 K·μm^(−1);the width of the interdiffusion zone is also ***,the temperature gradient promotes the interdiffusion of elements through the *** contrast,when the initial Al concentration is different in the alloy layers,an uphill diffusion of Al occurs,which is driven by the chemical potential of Al.

关键词： Superalloy Interdiffusion Interface microstructure Phase-field