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中国有色金属学报 2025年第1期35卷 313-325页

作者： Zhi-hao SHEN shu-ming wen Jia-mei HAO Qi-cheng FENG State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Land Resource EngineeringKunming University of Science and TechnologyKunming 650093China

Mineral fulvic acid(MFA)was used as an eco-friendly pyrite depressant to recover chalcopyrite by flotation with the use of the butyl xanthate as a *** experiments showed that MFA produced a stronger inhibition effect on pyrite than on *** separation of chalcopyrite from pyrite was realized by introducing 150 mg/L MFA at a pulp pH of approximately *** copper grade,copper recovery,and separation efficiency were 28.03%,84.79%,and 71.66%,*** adsorption tests,zeta potential determinations,and localized electrochemical impedance spectroscopy tests showed that more MFA adsorbed on pyrite than on chalcopyrite,which weakened the subsequent interactions between pyrite and the *** force microscope imaging further confirmed the adsorption of MFA on pyrite,and X-ray photoelectron spectroscopy results indicated that hydrophilic Fe-based species on the pyrite surfaces increased after exposure of pyrite to MFA,thereby decreasing the floatability of pyrite.

关键词： mineral fulvic acid chalcopyrite pyrite flotation separation

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锗锡浓度对硅锗锡合金性能影响的研究

原子与分子物理学报 2025年第5期42卷 163-174页

作者：顾永顺温淑敏内蒙古工业大学理学院呼和浩特010051

由于SiGeSn合金材料其具有高的载流子迁移率和较长的载流子寿命,并且其结构具有较高的热力学稳定性,所以在光电子领域中是一种具有非常大应用潜力的半导体材料.本文采用密度泛函理论中的广义梯度近似GGA+U的方法,构建并计算了本征半导体... 详细信息

由于SiGeSn合金材料其具有高的载流子迁移率和较长的载流子寿命,并且其结构具有较高的热力学稳定性,所以在光电子领域中是一种具有非常大应用潜力的半导体材料.本文采用密度泛函理论中的广义梯度近似GGA+U的方法,构建并计算了本征半导体Si_(96)与五组掺杂模型Si_(92)Ge_(2)Sn_(2)、Si_(88)Ge_(4)Sn_(4)、Si_(84)Ge_(6)Sn_(6)、Si_(80)Ge_(8)Sn_(8)、Si_(76)Ge_(10)Sn_(10)的电子结构及光学性质.通过对计算结果的分析可知,Ge,Sn的加入使得Si材料的带隙宽度减小,并且发生了由间接带隙向直接带隙的转变;Ge,Sn浓度最高的SiGeSn合金的形成能相对较高,稳定性相较于Ge,Sn含量低的材料较差;随着Ge,Sn掺杂浓度的提高,电子态密度图显示出越来越明显的杂化现象,并且态密度的峰值主要有Si原子的s轨道提供;Ge,Sn浓度的提高还使得SiGeSn合金的吸收系数在可见光及近红外区域内增加、反射率在可见光及以上波段范围内提高、折射率变低、消光系数曲线向红外区域移动等光学性质变化,表明可以通过调节Ge,Sn浓度来获得合适的光学特性,这为SiGeSn半导体在红外区域光电材料和器件的应用上提供了研究方向.

关键词： SiGeSn 电子特性光学性质

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Sex and age differences in depression and anxiety networks among adolescents with idiopathic scoliosis:A network analysis

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World Journal of Psychiatry 2025年第3期15卷 261-271页

作者： shu-wen Dong Lei Yang Yi-Fan Lin Li-wen Yang Dan Li Li-Wan Zhu Cai-Yun Zhang Yan-Zhi Li Wan-Xin Wang Ci-Yong Lu Bin Yan Department of Medical Statistics and Epidemiology School of Public HealthSun Yat-Sen UniversityGuangzhou 510080Guangdong ProvinceChina Department of Spine Surgery The First Affiliated Hospital of Shenzhen UniversityShenzhen 518035Guangdong ProvinceChina Medical Innovation Technology Transformation Center Shenzhen Second People’s HospitalShenzhen 518035Guangdong ProvinceChina Department of Spine Surgery The First Affiliated HospitalShenzhen UniversityShenzhen Second People’s HospitalShenzhen 518035Guangdong ProvinceChina

BACKGROUND Depression and anxiety are prevalent psychological challenges among patients with adolescent idiopathic scoliosis(AIS),affecting individuals across both sex and age *** To explore the network structure of depression and anxiety symptoms,with a focus on identifying differences at the symptom level between sex and age *** A total of 1955 participants diagnosed with AIS aged 10-18 years were assessed using the Patient Health Questionnaire Depression Scale(PHO-9)and the Generalized Anxiety Disorder Scale(GAD-7),and 765 patients exhibiting PHQ-9 or GAD-7 scores ≥ 5 were enrolled in our study. Network analysis and network comparison tests were utilized toconstruct and compare the depression-anxiety symptoms networks among sex and age *** results revealed GAD3 “Excessive worry” and PHQ2 “Sad mood” were the most significant central symptomsin all subgroups, while “Sad mood” had higher strength than “Excessive worry” in the lower age group. In thenetwork comparisons, the female network exhibited tighter connectivity, especially on GAD6 “Irritability” andGAD2 “Uncontrollable worry”, while only PHQ3 “Sleep” and PHQ9 “Suicidal ideation” had differences at thelocal level in the lower age *** interventions targeting excessive worry and sad mood could reduce the risk of depression and anxietysymptoms in the AIS population. Furthermore, specific anxiety symptoms in females, along with sleep disturbancesand suicidal ideation in the lower age group, should be addressed at an early stage to prevent significantdisruptions in mental health trajectories.

关键词： Adolescent idiopathic scoliosis Network analysis Depression and anxiety symptoms Age difference Sex difference

Readout electronics for the gamma detector of the HIRFL-CSR external target facility

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Nuclear Science and Techniques 2025年第2期36卷 71-81页

作者： Xian-Qin Li Hai-Bo Yang Xiao-Meng Ma Chao-Jie Zou Tao Liu Xian-Cai Zhou Duo Yan Yang-Zhou Su shu-wen Tang Shi-Tao Wang Yu-Hong Yu Zhi-Yu Sun Cheng-Xin Zhao Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing 100049China School of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China School of Big Data and Information Engineering Guizhou UniversityGuiyang 550025China

The Cooling Storage Ring of the Heavy Ion Research Facility in Lanzhou(HIRFL-CSR)was constructed to study nuclear physics,atomic physics,interdisciplinary science,and related *** External Target Facility(ETF)is located in the main ring of the *** gamma detector of the ETF is built to measure emitted gamma rays with energies below 5 MeV in the center-of-mass frame and is planned to measure light fragments with energies up to 300 *** readout electronics for the gamma detector were designed and *** readout electronics consist of thirty-two front-end cards,thirty-two readout control units(RCUs),one common readout unit,one synchronization&clock unit,and one sub-trigger *** using the real-time peak-detection algorithm implemented in the RCU,the data volume can be significantly *** addition,trigger logic selection algorithms are implemented to improve the selection of useful events and reduce the data *** test results show that the integral nonlinearity of the readout electronics is less than 1%,and the energy resolution for measuring the 60 Co source is better than 5.5%.This study discusses the design and performance of the readout electronics.

关键词： HIRFL-CSR Gamma detector External target facility Readout electronics Readout control unit Common readout unit Peak-detection algorithm

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新世纪国际中文当代文学课建设的改革与探索

黑龙江社会科学 2025年第1期 82-87页

作者：韩文淑吉林大学文学院长春130012

长久以来,与注重语言要素教学倾向相对,中国文学课的建设一直没有受到应有的重视,尤其是当代文学课,其在国际中文教学中的学科规范性尚未建立起来。随着时代语境的发展,当代文学因与当下国情的切近,与当代中国人生活的贴近,对当代中国... 详细信息

长久以来,与注重语言要素教学倾向相对,中国文学课的建设一直没有受到应有的重视,尤其是当代文学课,其在国际中文教学中的学科规范性尚未建立起来。随着时代语境的发展,当代文学因与当下国情的切近,与当代中国人生活的贴近,对当代中国文化的独特表达,语言上与当下生活语境的契合等显示出区别于古代文学、现代文学的独特优势,这些都有利于促进高级水平的留学生更高层面、更深程度地知华友华。因此加强国际中文当代文学课建设与课堂实践急需我们从教者的积极探索。

关键词：国际中文教育当代文学课课程建设课堂教学评价体系

元宇宙视域下体育赛事高质量发展的价值诉求、问题论域与纾解方略

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浙江体育科学 2025年第1期47卷 34-43页

作者：王蕾舒文港武汉工商学院公共课部湖北武汉430065 湖北大学体育学院湖北武汉430062

元宇宙体育赛事发展探究能促进体育赛事与科技深度融合、推动体育产业高质量发展。运用文献资料法、逻辑分析法等方法,探究元宇宙的概念及价值,架构元宇宙视域下体育赛事发展框架。研究得出:元宇宙视域下体育赛事高质量发展的四条价值诉... 详细信息

元宇宙体育赛事发展探究能促进体育赛事与科技深度融合、推动体育产业高质量发展。运用文献资料法、逻辑分析法等方法,探究元宇宙的概念及价值,架构元宇宙视域下体育赛事发展框架。研究得出:元宇宙视域下体育赛事高质量发展的四条价值诉求,即元宇宙是增强体育赛事消费的新方式;元宇宙是助力体育赛事转型的新模式;元宇宙是拓展体育赛事品牌的新渠道;元宇宙是开辟体育赛事产业的新路径。进而探讨四个问题论域:(1)产权问题凸显,元宇宙体育赛事产权待明确;(2)技术壁垒严重,元宇宙体育赛事技术未贯通;(3)监管尚且不足,元宇宙体育赛事监管较羸弱;(4)组织布局过晚,元宇宙体育赛事布局欠考虑。并提出四条纾解方略:(1)监管规治:制定法规政策,保护元宇宙体育赛事的品牌;(2)研发技术:允许多元平台参与,突破元宇宙体育赛事现有限制;(3)确保权益:明确体育内容产权,保障元宇宙体育赛事收益;(4)创新驱动:拓展赛事运营模式,延伸元宇宙体育赛事服务。

关键词：体育赛事元宇宙高质量发展

Existence and Dynamics of Bounded Traveling Wave Solutions to Getmanou Equation

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Communications in Theoretical Physics 2018年第12期69卷 672-676页

作者： Zhen-shu wen School of Mathematical Sciences Huaqiao University

In this paper, we study the existence and dynamics of bounded traveling wave solutions to Getmanou equations by using the qualitative theory of differential equations and the bifurcation method of dynamical systems. We show that the corresponding traveling wave system is a singular planar dynamical system with two singular straight lines, and obtain the bifurcations of phase portraits of the system under different parameters conditions. Through phase portraits, we show the existence and dynamics of several types of bounded traveling wave solutions including solitary wave solutions, periodic wave solutions, compactons, kink-like and antikink-like wave solutions. Moreover, the expressions of solitary wave solutions are given. Additionally, we confirm abundant dynamical behaviors of the traveling wave s olutions to the equation, which are summarized as follows: i) We confirm that two types of orbits give rise to solitary wave solutions, that is, the homoclinic orbit passing the singular point, and the composed homoclinic orbit which is comprised of two heteroclinic orbits and tangent to the singular line at the singular point of associated system. ii) We confirm that two types of orbits correspond to periodic wave solutions, that is, the periodic orbit surrounding a center,and the homoclinic orbit of associated system, which is tangent to the singular line at the singular point of associated system.

关键词： getmanou equation bounded traveling wave solutions existence bifurcations dynamics

Organic matter and concentrated nitrogen removal by shortcut nitrification and denitrification from mature municipal landfill leachate

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Journal of Environmental Sciences 2007年第6期19卷 647-651页

作者： ZHANG shu-jun PENG Yong-zhen WANG shu-ying ZHENG shu-wen GUO Jin College of Environmental and Energy Engineering Beijing University of Technology Beijing 100022 China

An UASB＋Anoxic/Oxic （A/O） system was introduced to treat a mature landfill leachate with low carbon-to-nitrogen ratio and high ammonia concentration. To make the best use of the biodegradable COD in the leaehate, the denitrifieation of NOx^--N in the reeireulation effluent from the elarifier was carried out in the UASB. The results showed that most biodegradable organic matters were removed by the denitrifieation in the UASB. The NH4^＋-N loading rate （ALR） of A/O reactor and operational temperature was 0.28- 0.60 kg NH4^＋-N/（m^3-d） and 17-29℃ during experimental period, respectively. The short-cut nitrification with nitrite accumulation efficiency of 90%-99% was stabilized during the whole experiment. The NH4^＋-N removal efficiency varied between 90% and 100%. When ALR was less than 0.45 kg NH4^＋-N/（m^3.d）, the NH4^＋-N removal efficiency was more than 98%. With the influent NH4^＋-N of 1200-1800 mg/L, the effluent NH4^＋-N was less than 15 mg/L. The shortcut nitrification and denitrifieation can save 40% carbon source, with a highly efficient denitrifieation taking place in the UASB. When the ratio of the feed COD to feed NH4^＋-N was only 2-3, the total inorganic nitrogen （TIN） removal efficiency attained 67%-80%. Besides, the sludge samples from A/O reactor were analyzed using FISH. The FISH analysis revealed that ammonia oxidation bacteria （AOB） accounted for 4% of the total eubaeterial population, whereas nitrite oxidation bacteria （NOB） accounted only for 0.2% of the total eubaeterial population.

关键词： mature landfill leachate UASB+A/O shortcut nitrification carbon source

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构建统一战线嵌入矛盾纠纷化解机制

山东工商学院学报 2025年第1期39卷 106-114,124页

作者：李立景程文姝广西民族大学法学院南宁530006

统一战线作为我国的特有政治优势,具备协调各方、整合资源的功能,是我国国家治理中的重要法宝。在新时代大统战格局下,统一战线工作需要进行自我创新以促进基层社会治理现代化。将统一战线工作与矛盾纠纷化解相结合,构建完备的规范化、... 详细信息

统一战线作为我国的特有政治优势,具备协调各方、整合资源的功能,是我国国家治理中的重要法宝。在新时代大统战格局下,统一战线工作需要进行自我创新以促进基层社会治理现代化。将统一战线工作与矛盾纠纷化解相结合,构建完备的规范化、体系化、组织化的统一战线嵌入矛盾纠纷化解机制,这是统一战线话语与共同体意识、矛盾纠纷化解共同体、社会治理共同体相互呼应的实践体现,也是实现国家制度优势向治理效能的转化。

关键词：统一战线矛盾纠纷化解社会治理基层治理协同治理

Facile Syntheses of New Pyrazolo[1,5-a]pyrimidines Derivatives via Reactions of Enaminones with Aminopyrazole

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Chemical Research in Chinese Universities 2005年第6期21卷 663-667页

作者： LI Ming WANG shu-wen wen Li-rong KE Zi-qin College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China Department of Chemistry Xinjiang Normal University Urumuqi 830054 P. R. China

Ethyl 7-aryl-2-benzyhhiopyrazolo [ 1,5-a ] pyrimidine-3-carboxylates （3a-3f） were conveniently synthesized through the reactions of enaminones with 5-amino-3-benzyhhio4-ethoxycarbonyl-1 H-pyrazole in good yields and high regioselectivity. The structures of the new compounds were fully characterized by spectroscopic measurmehts, elemental analysis and X-ray diffraction analysis. A plausible reaction mechanism for the formation of the title compounds was also presented.

关键词： Pyrazolo [ 1,5-a ] pyrimidine Enaminone Synthesis Mechanism Crystal structure