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Posttraumatic stress symptoms among Chinese university students during the COVID-19 pandemic:Prevalence,correlates,and mental health help-seeking

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World Journal of Psychiatry 2025年第1期15卷 145-152页

作者： Rui-Yao Wu Lin-Feng Ge bao-liang Zhong Department of Psychiatry The Affiliated Wuhan Mental Health CenterTongji Medical College of Huazhong University of Science&TechnologyWuhan 430012Hubei ProvinceChina Department of Psychiatry Wuhan Mental Health CenterWuhan 430012Hubei ProvinceChina

BACKGROUND Revisiting the epidemiology of posttraumatic stress symptoms(PTSSs)among university students during the coronavirus disease 2019(COVID-19)pandemic as well as understanding the mental health help-seeking behavior of individuals with PTSSs has critical implications for public mental health strategies in future medical *** To investigate the prevalence and correlates of PTSSs among university students during the first wave of the COVID-19 pandemic in China and to examine mental health help-seeking behaviors among these *** A total of 2507 Chinese university students were recruited via snowball *** students completed the Seven-item Screening Scale for Post-traumatic Stress Disorder during the first wave of the COVID-19 pandemic in ***-graphic characteristics,pandemic-related characteristics,and mental health help-seeking behaviors of students with PTSSs were also *** The prevalence of PTSSs among the participants was 28.0%.Seven significant correlates of PTSSs were identified(odds ratio=1.23-3.65,P≤0.024):Female sex,being 19 years old or older,living with others or alone,a low level of family economic status,fair or poor interpersonal relationships,severe or very severe local pandemic,and having family members diagnosed with ***,only 3.28%of the students with PTSSs reported seeking help from mental health *** the 23 students who sought help from mental health specialists,13 opted for online or telephone-based psychological *** Our data suggest that there was a high risk of PTSSs among university students and a high level of unmet mental health needs during the COVID-19 *** delivery of mental health services online or via telephone is a promising approach to address these unmet needs.

关键词： Posttraumatic stress symptoms University students COVID-19 Mental health help-seeking China

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Partition of polycyclic aromatic hydrocarbons on organoben-tonites from water

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Journal of Environmental Sciences 2001年第2期13卷 129-136页

作者： CHEN bao-liang ZHU Li-zhong Department of Environmental Science Zhejiang UniversityHangzhou 310028China

A series of organobentonites synthesized by exchanging organic ration such as dodecyltri-methylammonium ( DTMA), benzyldimethyltetradecylammonium (BDTDA), cetyltrimethyl-ammonium (CTMA), octodeyltrimethylammonium (OTMA) on bentonite The optimal condition, properties and mechanisms for the organobentonites to sorb phenanthrene, anthracene, naphthalene, acenaphthene in water were investigated in detail. The partition behavior was determined for four polycyclic aromatic hydrocarbons (PAHs), such as naphthalene, phenanthrene, anthracene and acenaphthene, from water to a series of organobentortites. The interlayer spacings and organic carbon contents of organobentonites, removal rate and sorption capacities for organobentonites to treat phenanthrene, anthracene, naphthalene, acenaphthene were correlated to the length of alkyl chains and the amounts of ration surfactant exchanged on the bentonite. Phenanthrene, anthracene, naphthalene, and acenaphthene sorption to organobentonites were characterized by linear isotherms, indicating solute partition between water and the organic phase composed of the large alkyl functional groups of quaternary ammonium rations. PAHs distribution coefficients (K-d) between organobentonites and water were proportional to the organic carbon contents of organobentonites. However, the partition coefficients ( K-oc) were nearly constants for PAHs in the system of organobentonite-water. The K-ocx of phenanthrene, anthracene, naphthalene, acenaphthene were 2.621 x 10(5), 2.106 x 10(5), 2.247 x 10(4), 5.085 x 10(4), respectively. The means K-oc values on the organobentonites are about ten to twenty times larger than the values on the soils/sediments, what is significant prerequisite for organobentonite to apply to remediation of pollution soil and groundwater. The sorption mechanism was also evaluated from octanol-water partition coefficients and aqueous solubility of PAHs. The correlations between 1gK(oc) and 1gK(ow), 1gK(oc) and 1gS for PAHs in th

关键词： organobentonites polycyclic aromatic hydrycarbons partition

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Sorption of 1-naphthol by plant cuticular fractions

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Journal of Environmental Sciences 2007年第10期19卷 1214-1220页

作者： CHEN bao-liang LI Yun-gui Department of Environmental Science Zhejiang University Hangzhou 310028 China

The contribution of aliphatic-rich plant biopolymer to sorption of hydrophobic organic compounds is significantly important because of their preservation and accumulation in the soil environment, but sorption mechanism is still not fully understood. In this study, sorption of 1-naphthol by plant cuticular fractions was examined to better understand the contributions of respective fraction. Toward this end, cuticular materials were isolated from the fruits of tomato by chemical method. The tomato cuticle sheet consisted of waxes （6.5 wt%）, cuticular monomer （69.5 wt%）, and polysaccharide （24.0 wt%）. Isotherms of 1-naphthol to the cuticular fractions were nonlinear （N value （0.82 - 0.90）） at the whole tested concentration ranges. The K∞/Kow ratios for bulk cuticle （TC1）, dewaxed cuticle （TC2）, cutin （TC4）, and desugared cuticle （TC5） were larger than unity, suggested that tomato bulk cuticle and cutin are much powerful sorption medium. Sorption capability of cutin （TC4） was 2.4 times higher than the nonsaponifiable fraction （TC3）. The 1-naphthol interactions with tomato cuticular materials were governed by both hydrophobic-type interactions and polar （H-bonding） interactions. Removal of the wax and polysaccharide materials from the bulk tomato cuticle caused a significant increase in the sorption ability of the cuticular material. There was a linear negative trend between K∞ values and the amount of polysaccharides or fraction＇s polarities （（N＋O）/C）; while a linear positive relationship between K∞ values and the content ofcutin monomer （linear R^2 = 0.993） was observed for present in the cuticular fractions. Predominant sorbent of the hydrophobic organic compounds （HOCs） in the plant cuticular fraction was the cutin monomer, contributing to 91.7% of the total sorption of tomato bulk cuticle.

关键词： plant cuticle 1-naphthol sorption cutin monomer

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Chemical behavior of organic compounds in the interface of water/dual-cation organobentonite

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Journal of Environmental Sciences 2002年第1期14卷 12-19页

作者： CHEN bao liang ZHU Li zhong Department of Environmental Science Zhejiang UniversityHangzhou 310028China.

The sorption behavior of polar or ionizable organic compounds, such as p nitrophenol, phenol and aniline, in the water/organobentonite systems is investigated. Both adsorption and partition occur to the sorption of organic compounds to dual cation organobentonites. The separate contributions of adsorption and partition to the total sorption of organic compounds to dual cation organobentonites are analyzed mathematically in the first time. The factors to the contributions are also discussed. The results indicated that the contribution of adsorption and partition is related to the composition and ratio of dual cation surfactants exchanging onto the bentonite. The sorption of organic compounds to dual cation organobentonite is dominated by adsorption at low concentrations and by partition at high concentrations, making the organobentonites powerful sorbents for organic contaminants over wide range of concentrations.

关键词： dual-cation organobentonite p-nitrophenol phenol aniline sorption behavior

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Mechanical and magnetic hysteresis as indicators of the origin and inception of fatigue damage in steel

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第8期11卷 580-586页

作者： Sheng bao Wei-liang JIN Ming-feng HUANG Institute of Structural Engineering Zhejiang University Hangzhou 310058 China

N2 and N3 are known as the transition points of the three principal stages of fatigue: initial accommodation, accretion of damage and terminal fatigue. Many experiments show that the ratios of N2/Nf and N3/Nf tend to be stable even though the specific N2 and N3 values may fluctuate widely. The primary goal of this research is to study the piezomagnetic field surrounding AISI 1018 steel specimen under repeated loads and to find the ratio values of N2/Nf and N3/Nf by analyzing 11 sets of low-cycle fatigue data. An MTS-810 testing system with a peak capacity of 222 kN was used to obtain the data which consisted of stress, strain, and piezomagnetic field. A computer program was constructed to track the evolution of the piezomagnetic field and re- gression analysis was carried out to determine N2 and N3 values. It was observed that there exists a consistent relationship between N2 and Nf. The apparent invariance of the ratio N2/Nf implies that N2 may be identified as an index of performance in the early loading response of a specimen that forecasts its fatigue life, Nf. It has been demonstrated that measurements of the magnetic and mechanical hysteresis can yield significant insights into the various stages of the development of a fatigue critical microstructure which culminates in complete rupture of the material.

关键词： Piezomagnetic effects. Fatigue damage. Mechanical hvsteresis. Magnetic hysteresis

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An urgent call on revisions to current genome annotation strategies

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Science China(Life Sciences) 2023年第8期66卷 1942-1943页

作者： Yu Zhou bao-liang Song College of Life Sciences TaiKang Center for Life and Medical SciencesWuhan UniversityWuhan 430072China TaiKang Medical School Wuhan UniversityWuhan 430072China

Transposable elements(TEs)account for a large proportion of eukaryotic genomes and contribute to the evolution of novel genic sequences as well as regulatory elements(Long et al.,2003;Wang et al.,2019;Wang et al.,2016b).The questions of how and to what extent transposable elements may contribute to new functional genes remain largely *** the current issue,Yang et al.

关键词： genome elements

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Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

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Optoelectronics Letters 2008年第4期4卷 302-306页

作者： bao Jin liang Xi-xia Departement of Physics Inner Mongolia University Hohhot 010021 China

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.

关键词：三元混合晶体声子极化声子成分研究

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Gasification of Organic Waste:Parameters,Mechanism and Prediction with the Machine Learning Approach

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Journal of Renewable Materials 2023年第6期11卷 2771-2786页

作者： Feng Gao liang bao Qin Wang Yibin Research Institute Southwest Jiaotong UniversityYibinChina Office of Domestic Cooperation and Educational Training Management Southwest Jiaotong UniversityChengduChina School of Computer Science and Technology Xidian UniversityXi’anChina Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengduChina

Gasification of organic waste represents one of the most effective valorization pathways for renewable energy and resources recovery,while this process can be affected by multi-factors like temperature,feedstock,and steam content,making the product’s prediction *** the popularization and promotion of artificial intelligence such as machine learning(ML),traditional artificial neural networks have been paid more attention by researchers from the data science field,which provides scientific and engineering communities with flexible and rapid prediction frameworks in the field of organic waste *** this work,critical parameters including temperature,steam ratio,and feedstock during gasification of organic waste were reviewed in three scenarios including steam gasification,air gasification,and oxygen-riched gasification,and the product distribution and involved mechanism were ***,we presented the details of ML methods like regression analysis,artificial neural networks,decision trees,and related methods,which are expected to revolutionize data analysis and modeling of the gasification of organic *** outputs including the syngas yield,composition,and HHVs were discussed with a better understanding of the gasification process and ML *** review focused on the combination of gasification and ML,and it is of immediate significance for the resource and energy utilization of organic waste.

关键词： Gasification organic waste machine learning gas composition

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Hitching a ride to the top:peroxisomes fuel cilium with cholesterol

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Science China(Life Sciences) 2021年第3期64卷 478-481页

作者： Jie Luo Yuan-Bin Liu bao-liang Song Hubei Key Laboratory of Cell Homeostasis College of Life SciencesWuhan UniversityWuhan 430072China

Primary cilium,which protrudes from the cell,is a microtubule-based structure ensheathed by a highly specialized plasma membrane(PM).It serves as a signaling hub for sensing and transducing various external stimuli including fluids,light,odorants as well as extracellular *** various signal transduction pathways that act through the primary cilium,the Hedgehog(Hh)pathway draws the most attention owing to its essential role in vertebrate development and its intimate link to carcinogenesis(Bangs and Anderson,2017).The major components of the Hh pathway include the secreted ligand Hh,two transmembrane proteins Patched(Ptch)and Smoothened(Smo),and the transcription factor glioma-associated oncogene(Gli).Ptch is the receptor for Hh which,in the absence of Hh,resides at the primary cilium and prevents ciliary localization and activation of *** Hh binding,however,Ptch is suppressed and displaced from the ciliary *** permits Smo to enter the primary cilium and initiate a cascade of events that lead to the activation of Gli transcription factors and transcription of downstream target genes.

关键词： ilium carcinogenesis specialized

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The velocity patterns in rigid and mobile channels with vegetation patches

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Journal of Hydrodynamics 2020年第3期32卷 561-569页

作者： bao-liang Ren Dan Wang Wen-qi Li Ke-jun Yang State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu 610065China

The hydraulic characteristics in an open channel with vegetation are very important in controlling the environment pollution and restoring the river ecology. This paper studies the influence of the bed form and the vegetation patch density on the spatial velocity pattern. Rigid fiberglass circular cylinders are used to simulate the vegetation and a 3-D acoustic Doppler velocimeter (ADV) is used to measure the local flow velocities. Two types of bed forms and a series of vegetation patch densities are considered. The experimental results show that the bed form significantly influences the vertical distribution of the streamwise velocity. Besides, the velocity is affected by the bed form while the lateral distribution shape of the streamwise velocity as well as the lateral and longitudinal distribution shapes of the depth-averaged velocity is less affected. When all test conditions but the bed condition remain the same, as a result of the water energy consumption by the sediment movement, the velocity in the mobile bed case is smaller than that in the rigid bed case. The vegetation patch density has a significant effect on the flow velocity. The distributions of the flow velocity at different locations show different trends with the increase of the vegetation patch density. The upstream adjustment length is not affected by the vegetation patch density, but the steady wake length is very much affected.

关键词： Vegetation patch density bed form velocity characteristics sediment

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