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Solitude capacity and emotional experience in Chinese college students:The suppression effect of emotion regulation 认领 引用
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作者 Youming Song Yuxin Li +3 位作者 Yin Wang Yuan Xie Gang Qiao Jingyi Chen 《Journal of Psychology in Africa》 2025年第1期51-59,共9页
Although numerousfindings show that people experience both positive and negative experiences with regards to solitude,the relationship between solitude capacity and emotional experience remains unclear.The current stud... Although numerousfindings show that people experience both positive and negative experiences with regards to solitude,the relationship between solitude capacity and emotional experience remains unclear.The current study investigated the extent to which emotion regulation may play a suppressive role in the relationship between solitude capacity and emotional experience.Questionnaires on solitude capacity,emotion regulation,and emotional experience were completed by a sample of Chinese college students(n=844;432 females;Meanage=19.79 years,SD=1.43 years).The results of the indirect effect test showed that cognitive reappraisal suppresses the prediction of solitude capacity on positive emotions,while the solitude capacity prediction of negative emotions was suppressed by both cognitive reappraisal and expressive suppression.This suggests that solitude capacity does not predict emotional experience directly,but instead is realized through an antagonistic system consisting of adaptive and nonadaptive emotion regulation strategies.Thesefindings provide cross-sectional empirical support for the ecological niche hypothesis of solitude,and are of theoretical significance in clarifying the role of internal mechanisms of solitude capacity on the human emotional experience. 展开更多
关键词 solitude capacity emotion regulation emotional experience suppression effect
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Superior stability of Li5Mg@Cu anodes for lithium metal batteries:Investigating the suppression effects of magnesium on lithium dendrite growth 认领 引用 被引量：1
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作者 Ruijun Yao Zhuoyu Li +10 位作者 Longke Bao Rui Deng Kai Zheng Yiming Hu Jiahui Li Hao Zhang Shaobo Tu Rongpei Shi Junwei Wu Changming Li Xingjun Liu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第8期288-302,共15页
Li metal is widely recognized as the desired anode for next-generation energy storage,Li metal batteries,due to its highest theoretical capacity and lowest potential.Nonetheless,it suffers from unstable electrochemica... Li metal is widely recognized as the desired anode for next-generation energy storage,Li metal batteries,due to its highest theoretical capacity and lowest potential.Nonetheless,it suffers from unstable electrochemical behaviors like dendrite growth and side reactions in practical application.Herein,we report a highly stable anode with collector,Li5Mg@Cu,realized by the melting-rolling process.The Li5Mg@Cu anode delivers ultrahigh cycle stability for 2000 and 1000 h at the current densities of 1 and 2 mA cm-2,respectively in symmetric cells.Meanwhile,the Li5Mg@Cu|LFP cell exhibits a high-capacity retention of 91.8% for 1000 cycles and 78.8% for 2000 cycles at 1 C.Moreover,we investigate the suppression effects of Mg on the dendrite growth by studying the performance of LixMg@Cu electrodes with different Mg contents(2.0-16.7 at%).The exchange current density,surface energy,Li+diffusion coefficient,and chemical stability of LixMg@Cu concretely reveal this improving suppression effect when Mg content becomes higher.In addition,a Mg-rich phase with“hollow brick”morphology forming in the high Mg content LixMg@Cu guides the uniform deposition of Li.This study reveals the suppression effects of Mg on Li dendrites growth and offers a perspective for finding the optimal component of Li-Mg alloys. 展开更多
关键词 Lithium dendrite Lithium metal anode Lithium-magnesium alloy Cycle performance Suppression effect Stability
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Anionically-Reinforced Nanocellulose Separator Enables Dual Suppression of Zinc Dendrites and Polyiodide Shuttle for Long-Cycle Zn-I2 Batteries 认领 引用 被引量：2
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作者 Wenhui Liu Hong Ma +4 位作者 Lingli Zhao Weiwei Qian Bo Liu Jizhang Chen Yagang Yao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第2期569-583,共15页
Zn-I2 batteries have emerged as promising next-generation energy storage systems owing to their inherent safety,environmental compatibility,rapid reaction kinetics,and small voltage hysteresis.Nevertheless,two crit... Zn-I2 batteries have emerged as promising next-generation energy storage systems owing to their inherent safety,environmental compatibility,rapid reaction kinetics,and small voltage hysteresis.Nevertheless,two critical challenges,i.e.,zinc dendrite growth and polyiodide shuttle effect,severely impede their commercial viability.To conquer these limitations,this study develops a multifunctional separator fabricated from straw-derived carboxylated nanocellulose,with its negative charge density further reinforced by anionic polyacrylamide incorporation.This modification simultaneously improves the separator’s mechanical properties,ionic conductivity,and Zn2+ion transfer number.Remarkably,despite its ultrathin 20μm profile,the engineered separator demonstrates exceptional dendrite suppression and parasitic reaction inhibition,enabling Zn//Zn symmetric cells to achieve impressive cycle life(>1800 h at 2 m A cm-2/2 m Ah cm-2)while maintaining robust performance even at ultrahigh areal capacities(25 m Ah cm-2).Additionally,the separator’s anionic characteristic effectively blocks polyiodide migration through electrostatic repulsion,yielding Zn-I2 batteries with outstanding rate capability(120.7 m Ah g-1at 5 A g-1)and excellent cyclability(94.2%capacity retention after 10,000 cycles).And superior cycling stability can still be achieved under zinc-deficient condition and pouch cell configuration.This work establishes a new paradigm for designing high-performance zinc-based energy storage systems through rational separator engineering. 展开更多
关键词 Zinc-iodine batteries Nanocellulose separators Carboxyl functional groups Polyiodide shuttle effect Dendrite suppression
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Chirality-Induced Suppression of Singlet Oxygen in Lithium-Oxygen Batteries with Extended Cycle Life 认领 引用
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作者 Kyunghee Chae Youngbi Kim +11 位作者 Yookyeong Oh Hosik Hahn Jaehyun Son Youngsin Kim Hyuk‑Joon Kim Hyun Jeong Lee Dohyub Jang Jooho Moon Kisuk Kang Jeong Woo Han Filipe Marques Mota Dong Ha Kim 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第2期124-137,共14页
Lithium-oxygen(Li-O2)batteries are perceived as a promising breakthrough in sustainable electrochemical energy storage,utilizing ambient air as an energy source,eliminating the need for costly cathode materials,and of... Lithium-oxygen(Li-O2)batteries are perceived as a promising breakthrough in sustainable electrochemical energy storage,utilizing ambient air as an energy source,eliminating the need for costly cathode materials,and offering the highest theoretical energy density(~3.5 k Wh kg-1)among discussed candidates.Contributing to the poor cycle life of currently reported Li-O2cells is singlet oxygen(1O2)formation,inducing parasitic reactions,degrading key components,and severely deteriorating cell performance.Here,we harness the chirality-induced spin selectivity effect of chiral cobalt oxide nanosheets(Co3O4NSs)as cathode materials to suppress 1O2in Li-O2batteries for the first time.Operando photoluminescence spectroscopy reveals a 3.7-fold and 3.23-fold reduction in 1O2during discharge and charge,respectively,compared to conventional carbon paperbased cells,consistent with differential electrochemical mass spectrometry results,which indicate a near-theoretical charge-to-O2ratio(2.04 e-/O2).Density functional theory calculations demonstrate that chirality induces a peak shift near the Fermi level,enhancing Co 3d-O 2p hybridization,stabilizing reaction intermediates,and lowering activation barriers for Li2O2formation and decomposition.These findings establish a new strategy for improving the stability and energy efficiency of sustainable Li-O2batteries,abridging the current gap to commercialization. 展开更多
关键词 Singlet oxygen suppression Chirality-induced spin selectivity effect Lithium–oxygen batteries Oxygen evolution reaction Battery stability
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Study on the Built-up Effect of Inorganic Compounds to Flame Retardant Containing Organophosphorus in Suppression of Smoke 认领 引用
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作者 林苗 咸春颖 杨勇 《Journal of Donghua University(English Edition)》 EI CAS 2006年第4期40-43,共4页
The built-up effect of inorganic compounds containing more active metal ions, such as Ca^2＋ , Al^3＋ , Cu^2＋ , and Zn^2＋ , as additives adding to phosphorus-containing flame retarding systems in suppression of smok... The built-up effect of inorganic compounds containing more active metal ions, such as Ca^2＋ , Al^3＋ , Cu^2＋ , and Zn^2＋ , as additives adding to phosphorus-containing flame retarding systems in suppression of smoke was studied. The data presented herein suggested that the amount of smoke in the burning process can be better suppressed after the cotton fabric finishing with built-up system was burnt. Some general principles were identified, and the likely causes of the observed effects were analyzed according to test data. 展开更多
关键词 flame retardant organophosphorus inorganic compound built-up effect smoke suppression.
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Staged dendrite suppression for high safe and stable lithium-sulfur batteries 认领 引用 被引量：2
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作者 Jun Jiang Zhenjie Lu +12 位作者 Yanwen Ding Shujun Liu Zhijie Qi Tian Tang Yunfan Zhang Zhiyuan Ma Jingwen Sun Liang Xue Wenyao Zhang Pan Xiong Xin Wang Junwu Zhu Yongsheng Fu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第1期674-683,共10页
The unavoidable dendrite growth and shuttle effect have long been stranglehold challenges limiting the safety and practicality of lithium-sulfur batteries.Herein,we propose a dual-action strategy to address the lithiu... The unavoidable dendrite growth and shuttle effect have long been stranglehold challenges limiting the safety and practicality of lithium-sulfur batteries.Herein,we propose a dual-action strategy to address the lithium dendrite issue in stages by constructing a multifunctional surface-negatively-charged nanodiamond layer with high ductility and robust puncture resistance on polypropylene (PP) separator.The uniformly loaded compact negative layer can not only significantly enhance electron transmission efficiency and promote uniform lithium deposition,but also reduce the formation of dendrite during early deposition stage.Most importantly,under the strong puncture stress encountered during the deterioration of lithium dendrite growth under limiting current,the high ductility and robust puncture resistance(145.88 MPa) of as-obtained nanodiamond layer can effectively prevent short circuits caused by unavoidable lithium dendrite.The Li||Li symmetrical cells assembled with nanodiamond layer modified PP demonstrated a stable cycle of over 1000 h at 2 mA cm-2with a polarization voltage of only 29.3 mV.Additionally,the negative charged layer serves as a physical barrier blocking lithium polysulfide ions,effectively mitigating capacity attenuation.The improved cells achieved a capacity decay of only 0.042%per cycle after 700 cycles at 3 C,demonstrating effective suppression of dendrite growth and capacity attenuation,showing promising prospect. 展开更多
关键词 Lithium-sulfur batteries Staged dendrite suppression Shuttle effect Surface-negatively-charged nanodiamond
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Suppressing Effects of Ag Wetting Layer on Surface Conduction of Er Silicide/Si(001) Nanocontacts 认领 引用
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作者 Qing Han Qun Cai 《Chinese Physics Letters》 SCIE EI CAS CSCD 2018年第8期74-78,共5页
Current-voltage electrical characteristics of Er silicide/Si（001） nanocontacts are measured in situ in a scanning tunneling microscopy system. Introduced as a new technique to suppress surface leakage conduction on... Current-voltage electrical characteristics of Er silicide/Si（001） nanocontacts are measured in situ in a scanning tunneling microscopy system. Introduced as a new technique to suppress surface leakage conduction on Si（001）,a silver wetting layer is evaporated onto the substrate surface kept at room temperature with Er Si2 nanoislands already existing. The effects of the silver layer on the current-voltage characteristics of nanocontacts are discussed.Our experimental results reveal that the silver layer at coverage of 0.4–0.7 monolayer can suppress effectively the current contribution from the surface conduction path. After the surface leakage path of nanocontacts is obstructed, the ideality factor and the Schottky barrier height are determined using the thermionic emission theory, about 2 and 0.5 eV, respectively. The approach adopted here could shed light on the intrinsic transport properties of metal-semiconductor nanocontacts. 展开更多
关键词 Ag Suppressing Effects of Ag Wetting Layer on Surface Conduction of Er Silicide/Si Nanocontacts
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Suppressive effect of dexamethasone on the neutrophil expression of CD18 in rats with radiation induced brain edema 认领 引用
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作者 Laixing Wang Yibin Fang Xiaoping Zhou Xiaowu Hu Jianmin Liu 《Neural Regeneration Research》 CAS 2006年第1期36-39,共4页
BACKGROUND： Stereo-tactic radiation therapy （SRT） is widely used to treat intracranial diseases, but some patients suffered from radiation induced brain edema after SRT. Once radiation induced brain edema occurs, t... BACKGROUND： Stereo-tactic radiation therapy （SRT） is widely used to treat intracranial diseases, but some patients suffered from radiation induced brain edema after SRT. Once radiation induced brain edema occurs, the treatment is quite difficult, and it always leads to a poor outcome. Dexamethasone has certain therapeutic effect on traumatic brain edema, but the biological mechanism is still unclear. OBJECTIVE ： To observe the effect of dexamethasone on the neutrophil expression of CD18.DESIGN ： A randomized control observation.SETTING： Changhai Hospital of the Second Military Medical University of Chinese PLA. MATERIALS ： The experiment was carried out in Changhai Hospital of the Second Military Medical University of Chinese PLA from January 1999 to December 1999. Twenty SD rats （male and female each in half） weighing （250±50） g were used. METHODS： Twenty SD rats were divided into four groups at random. ① Blank control group （n=5）： The rats were not treated without dexamethasone or irradiation;② Irradiation group （n=5）： The rats were given irradiation but no dexamethasone treatment; ③ Irradiation＋1 mg/kg dexamethasone group （n=5）; The rats were treated with irradiation and dexamethasone of 1 mg/kg; ④Irradiation＋5 mg/kg dexamethasone group （n=5）： The rats were treated with irradiation and dexamethasone of 5 mg/kg. The heads of the rats were irradiated with 10 MeV X-ray （30 Gy）, and brain tissue was removed after 2 weeks to observe the pathological changes. Blood samples were taken from the carotid artery, gradient centrifugation was used, and neutrophile layer was obtained, the level of neutrophile expression of CD18 mRNA and quantity of membrane proteins in blood were detected with Northern blot and flow cytometry respectively. MAIN OUTCOME MEASURES： ① Blood cell count; ② Pathological results; ③ level of neutrophile expression of CD18 mRNA and quantity of membrane proteins. RESULTS ： All the 20 SD rats were involved in the analysis of results without deletion. At 2 weeks after irradiation, obvious cell injury could be observed under light microscope. The level of neutrophile expression of CD18 mRNA and quantity of membrane proteins in blood were obviously increased, but the severity of cell injury was relieved in the irradiation＋1 and 5 mg/kg dexamethasone groups, and the CD18 expression was markedly suppressed （P 〈 0.05）, and the suppression was more obvious in the irradiation＋5 mg/kg dexamethasone group than in the irradiation＋1 mg/kg dexamethasone group （P 〈 0.01 ）. CONCLUSION： Dexamethasone can reduce the radiation induced brain edema by inhibiting the expression of CD18. 展开更多
关键词 Suppressive effect of dexamethasone on the neutrophil expression of CD18 in rats with radiation induced brain edema Figure CD
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Social desirability response bias confounds the effect of gender on social media addiction 认领 引用
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作者 Lihua Zuo Jian Mao 《Journal of Psychology in Africa》 2025年第2期241-247,共7页
This study examined how social desirability responses confound the relationship between gender and social media addiction.A total of 496 college student social media users(females=310,62.5%,mean age=20.15,SD=1.26)comp... This study examined how social desirability responses confound the relationship between gender and social media addiction.A total of 496 college student social media users(females=310,62.5%,mean age=20.15,SD=1.26)completed an online questionnaire on Social Media Addiction and Social Desirability.Mediation analysis revealed that females were at higher risk for social media addiction.On the other hand,the indirect effect of gender on social media addiction via social desirability is associated with lower social media addiction,which suggests that social desirability had a suppression effect on social media addiction associated with gender.ANOVA results showed that females reported higher social media addiction scores than males in the low social desirability group;in the high group,gender differences were insignificant.This study’s unique contribution is to suggest that females are at higher risk than males for developing addictive social media behaviors.Based on this finding,student social media safety interventions should be gender sensitive to the social desirability effect on females who may hide their true addiction as a result. 展开更多
关键词 gender social media addiction social desirability college students suppression effect
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Orbital-engineered layered MnO2cathode enabled by Ca2+interlayer coupling in rechargeable calcium battery 认领 引用
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作者 Xiaomin Han Lihua Wang +8 位作者 Ran Zhao Luyang Yu Zhaolin Gou Jingjing Yang Zhifan Hu Mengge Lv Feng Wu Ying Bai Chuan Wu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期1-11,I0002,共11页
Developing multivalent-ion storage systems demands cathode materials that combine high structural adaptability with favorable orbital interactions to host sluggish,highly charged carriers such as Ca2+.Herein,a mult... Developing multivalent-ion storage systems demands cathode materials that combine high structural adaptability with favorable orbital interactions to host sluggish,highly charged carriers such as Ca2+.Herein,a multi-synergistic interlayer engineering strategy is proposed via Ca2+interlayer coordination.The pre-coordination of Ca2+ions establishes Mn-O-Ca bridges that not only expand the interlayer distance but also reshape the local orbital field of Mn,thereby stabilizing the high-valence Mn states and suppressing Jahn-Teller distortion.Defect-induced orbital reconfiguration simultaneously enhances electronic delocalization and interlayer polarity by creating localized charge imbalances at oxygen vacancies.As a result,efficient charge transfer and Ca2+diffusion are promoted,and more surface-active sites are exposed.Electrochemical evaluations reveal that Ca-MnO2exhibits significantly improved reversible capacity(~100 mA h g-1at 0.1 A g-1)and long-term cycling stability(1200 cycles at 1 A g-1),outperforming pristineδ-MnO2.Kinetic analysis through CV,GITT,and EIS demonstrates enhanced Ca2+diffusion coefficients and reduced polarization in the pre-intercalated material.These results demonstrate an orbital-coupled interlayer engineering route toward high-performance Mn-based hosts for nextgeneration multivalent batteries. 展开更多
关键词 Rechargeable calcium battery Manganese dioxide Jahn-Teller effect suppression Interlayer engineering Oxygen vacancies
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原子钟研究进展及性能分析 认领 引用 被引量：1
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作者 史田田 韩梦媛 +5 位作者 张佳 秦晓敏 关笑蕾 高勋 陈锐航 陈景标 《光学学报（网络版）》 2026年第1期1-17,共17页
原子钟是一种利用量子能级跃迁原理产生稳定且准确的时间频率标准的高精密设备,可为国际单位制定义、卫星导航定位、物理原理验证等工作提供基本设备保障。如何优化频率稳定度指标、提升高精度原子钟的连续运行能力是原子钟应用面临的... 原子钟是一种利用量子能级跃迁原理产生稳定且准确的时间频率标准的高精密设备,可为国际单位制定义、卫星导航定位、物理原理验证等工作提供基本设备保障。如何优化频率稳定度指标、提升高精度原子钟的连续运行能力是原子钟应用面临的关键问题。本文针对以上两个问题,首先详细介绍了微波原子钟(铯喷泉原子钟)、被动光钟(光晶格钟和离子光钟)和主流主动光钟的研究现状,分析其发展前景和存在问题。然后,综述了新型主动光钟方案结合漫反射激光冷却技术的研究进展:1)提出极低精细度的Fabry-Pérot腔和反共振激光理论,填补激光物理关于低精细度、反共振腔的理论空白,降低腔长热噪声对原子钟性能的影响;2)基于大尺寸漫反射激光冷却技术,结合较强原子跃迁的四能级方案,提高主动光钟受激辐射功率,突破冷原子主动光钟受限于脉冲型工作方式、输出功率低的难题。上述方案有望在新型原子钟领域取得重要突破,对提升技术指标、拓展高精度频率标准的应用范围、推进主动光钟在前沿物理领域的应用意义重大。 展开更多
关键词 原子钟 主动光钟 漫反射激光冷却 腔牵引抑制效应
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交流特高压电子式可控避雷器操作过电压抑制效果研究 认领 引用
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作者 郭贤珊 徐华 +6 位作者 关镭镭 焦文耕 李卫国 范海兵 赵国亮 徐伟 郭洁 《电瓷避雷器》 CAS 2026年第2期8-15,共8页
交流特高压电力电子式可控避雷器(以下简称电子式可控避雷器)可以实现对多种高幅值暂态过电压的深度抑制,是目前特高压系统深度抑制操作过电压的有效手段,其可控比、动作电压等参数是决定其操作过电压抑制程度的重要因素。本研究建立了... 交流特高压电力电子式可控避雷器(以下简称电子式可控避雷器)可以实现对多种高幅值暂态过电压的深度抑制,是目前特高压系统深度抑制操作过电压的有效手段,其可控比、动作电压等参数是决定其操作过电压抑制程度的重要因素。本研究建立了典型特高压交流GIS电站仿真模型,系统研究了电子式可控避雷器配置参数对操作暂态冲击下的保护特性的影响,获得了不同参数配置、线路长度下对过电压的抑制效果,为工程应用中电子式可控避雷器参数的优化选择配置提供了参考依据。 展开更多
关键词 特高压电子式可控避雷器 操作过电压 抑制效果
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债多真的不愁吗?债务杠杆、数字素养与农户家庭消费拐点 认领 引用
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作者 乔丹 郑亚男 +1 位作者 姬一帆 陆迁 《海南大学学报（社会科学版）》 CSSCI 2026年第3期81-91,共11页
挖掘农民消费潜力对增进民生福祉、促进要素流通和畅通国内大循环具有重要意义。本研究以海南省农户调查数据,采用两阶段最小二乘法,实证分析了债务杠杆对农户家庭消费倾向的影响机理和内部逻辑,并进一步分析了农民数字素养对农村居民... 挖掘农民消费潜力对增进民生福祉、促进要素流通和畅通国内大循环具有重要意义。本研究以海南省农户调查数据,采用两阶段最小二乘法,实证分析了债务杠杆对农户家庭消费倾向的影响机理和内部逻辑,并进一步分析了农民数字素养对农村居民消费拐点的影响。研究表明:在家庭债务杠杆对农户庭消费倾向的影响中存在一个消费拐点,使得二者关系呈现为倒“U”型,且相对于非正规借贷,正规借贷对农户消费的促进作用更甚;此外,在农户数字素养对其家庭消费拐点的影响中,数字社交素养和数字娱乐素养对农户家庭消费拐点的影响作用较小,数字学习素养和安全素养能够促进家庭债务杠杆对其消费倾向的正向影响而提升家庭消费拐点;在机制分析中,农户家庭债务杠杆一方面可以通过促进农户非农就业提升其消费倾向,另一方面则会通过风险偏好发挥遮掩效应从而抑制家庭消费倾向。据此,应当继续完善农村地区金融产品供给市场体系,并规范农村地区民间借贷和加强农户数字技术培训,以鼓励农户继续扩大消费。 展开更多
关键词 债务杠杆 消费 倒“U”型 数字素养 遮掩效应
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高分子改性剂与EPS协同抑制黏质粉土冻胀试验研究 认领 引用
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作者 李乾坤 曹祎 +2 位作者 王敦显 王衍森 郭智杰 《地下空间与工程学报》 CSCD 北大核心 2026年第4期1240-1251,共12页
人工地层冻结法作为一种成熟的支护手段,具备优良的封水加固效果,但在实际应用中引发的冻胀效应已成为制约其工程安全性的关键问题,有效抑制冻胀影响成为其成功应用的关键技术难题。聚焦主动式土体改良技术,通过引入聚丙烯酰胺(PAM)、... 人工地层冻结法作为一种成熟的支护手段,具备优良的封水加固效果,但在实际应用中引发的冻胀效应已成为制约其工程安全性的关键问题,有效抑制冻胀影响成为其成功应用的关键技术难题。聚焦主动式土体改良技术,通过引入聚丙烯酰胺(PAM)、聚乙烯醇(PVA)、木质素磺酸钠(SLS)及聚苯乙烯(EPS)颗粒等新型改性材料,系统探究其对黏质粉土冻胀行为的抑制机理与协同效应。结果表明:PAM与PVA通过形成三维交联网络结构,显著抑制水分迁移与冰晶生长,冻胀率降幅达8.95%~66.28%;SLS作为有机表面活性剂,能够有效改善土体分散性,降低毛细水迁移速度,增强土体的抗冻胀能力,冻胀抑制率呈抛物线特征;EPS颗粒通过孔隙重构与应力缓冲效应,在0.02%掺量下实现50.71%的冻胀抑制率;PVA与EPS复配产生协同增效的作用,冻胀抑制率提升至77.43%,较单一EPS改良提升52.69%,其机制源于高分子凝胶体与EPS颗粒形成的复合团聚体,同步增强土体凝聚力与冻胀应力消散能力,提高了抗冻胀变形能力。本研究构建了高分子聚合物与EPS颗粒联用的复配改性体系,系统评估其对黏质粉土冻胀特性的协同抑制效果,可为相关工程技术应用提供参考。 展开更多
关键词 冻胀抑制 土体改良 冻胀特性 微观机理 协同效应
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微型灭火模块对磷酸铁锂电池模组的抑火效果 认领 引用
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作者 周天念 刘美麟 +2 位作者 陈宝辉 陈钦佩 邓捷 《消防科学与技术》 CAS 北大核心 2026年第1期100-105,113,共6页
基于微型灭火模块开展磷酸铁锂储能电池模组在热失控初期的灭火特性研究,模块内部灌装了项目组前期研究开发的三元混合灭火介质。试验过程采用过热为触发条件,获得了电池开阀和热失控过程温升变化、临界温度、灭火行为特征等典型参数,... 基于微型灭火模块开展磷酸铁锂储能电池模组在热失控初期的灭火特性研究,模块内部灌装了项目组前期研究开发的三元混合灭火介质。试验过程采用过热为触发条件,获得了电池开阀和热失控过程温升变化、临界温度、灭火行为特征等典型参数,可为储能电池包火灾防治提供指导。微型感温自动灭火模块可在3 s内扑灭磷酸铁锂储能电池模组热失控初起火灾,若无明火或电火花等引火源,电池火不会发生复燃。通过在储能电池包内预装微型灭火模块,可为其在运输、安装等无有效安全手段时提供防火保护。 展开更多
关键词 储能 磷酸铁锂电池 热失控 电池火灾 抑火效果
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双边直线感应电机次级端部优化推力波动抑制 认领 引用
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作者 李天平 史黎明 +3 位作者 殷正刚 杨泽宇 刘进海 李耀华 《西南交通大学学报》 EI CSCD 北大核心 2026年第4期1171-1178,共8页
双边直线感应电机(DSLIM)推力波动引发的系统振动问题,在高速电磁推进、轨道交通和工业驱动等精确控制领域迫切需要解决.本文深入研究双边直线感应电机次级结构,提出一种箭形次级设计方案,以减小DSLIM的推力波动.首先,推导箭形次级的关... 双边直线感应电机(DSLIM)推力波动引发的系统振动问题,在高速电磁推进、轨道交通和工业驱动等精确控制领域迫切需要解决.本文深入研究双边直线感应电机次级结构,提出一种箭形次级设计方案,以减小DSLIM的推力波动.首先,推导箭形次级的关键形状参数,建立包含平板次级、方形错位次级及箭形次级的DSLIM三维有限元模型,分析其推力输出特性;然后,对比不同次级结构涡流分布特征与分层推力分布特性,阐明箭形次级抑制推力波动的作用机理;最后,利用三维瞬态有限元模型,对比运动工况下优化前、后箭形次级结构的推力.结果表明:优化后的箭形次级通过优化端部涡流路径改善次级导体利用率并提升推力波动抑制效果,在工作滑差附近区域,推力波动率可降至2%以内,相同质量下推力可达到21.51 kN,较方形错位次级提升1.03%. 展开更多
关键词 直线电机 推力波动抑制 箭形次级 纵向动态端部效应 有限元方法
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不同全生物降解地膜在结球生菜栽培中的应用 认领 引用
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作者 朱青艳 金丽华 +4 位作者 张娜 赵艳 巩文雯 赵海康 晋彭辉 《北京农学院学报》 2026年第2期15-18,共4页
【目的】为评价全生物降解地膜在短生育期叶菜类作物中的应用效果。【方法】以结球生菜为研究对象,设4种不同类型和厚度的全生物降解地膜覆盖处理,并以聚乙烯(PE)地膜为对照,系统比较其在田间覆盖完整性、杂草抑制、产量及经济效益等方... 【目的】为评价全生物降解地膜在短生育期叶菜类作物中的应用效果。【方法】以结球生菜为研究对象,设4种不同类型和厚度的全生物降解地膜覆盖处理,并以聚乙烯(PE)地膜为对照,系统比较其在田间覆盖完整性、杂草抑制、产量及经济效益等方面的差异。【结果】结果表明,各全生物降解地膜在结球生菜整个生育期内均未出现明显降解,其覆盖稳定性与PE地膜相当,能够满足结球生菜生长对覆膜稳定性的基本需求;不同地膜处理在抑草效果和结球生菜产量方面存在一定差异,PBST全生物降解地膜处理的产量略高于PE地膜。【结论】综合分析认为,全生物降解地膜在结球生菜生产中具备良好的功能可行性,在材料类型选择方面聚丁二酸丁二醇酯塑料优于聚对苯二甲酸-己二酸丁二醇酯塑料材质,但其降解节律与短生育期作物的生长周期匹配性不足,尚难在收获期实现明显降解,后续仍需在地膜配方和厚度优化方面进一步改进。 展开更多
关键词 全生物降解地膜 结球生菜 抑草效果 产量
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焦点企业绿色技术创新的供应链溢出及其抑制效应研究 认领 引用
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作者 邵颖红 谢莹莹 《研究与发展管理》 CSSCI 北大核心 2026年第2期114-125,共12页
随着“双碳”目标纵深推进,绿色技术创新正从企业自身向整个供应链延伸。基于供应链治理和制度压力等理论,选取2010—2022年A股上市公司为样本,构造“焦点企业—上下游企业(供应商/客户)—年份”数据,实证检验焦点企业的绿色技术创新是... 随着“双碳”目标纵深推进,绿色技术创新正从企业自身向整个供应链延伸。基于供应链治理和制度压力等理论,选取2010—2022年A股上市公司为样本,构造“焦点企业—上下游企业(供应商/客户)—年份”数据,实证检验焦点企业的绿色技术创新是否带来供应链垂直方向上的溢出效应,并重点关注抑制这种溢出效应的重要因素。研究发现,焦点企业绿色技术创新能够明显促进其上下游企业开展绿色技术创新。机制检验表明,焦点企业绿色技术创新水平的提升会显著提升其供应链话语权,从而在一定程度上遮掩绿色技术创新的供应链溢出。调节效应分析表明,上下游企业面临的融资约束越严重、距离焦点企业越远,焦点企业的绿色技术创新供应链溢出效应越弱。研究结论不仅拓展了绿色技术创新供应链中溢出及其抑制效应研究,也为政府和企业开展绿色供应链管理、克服绿色技术创新溢出障碍提供启示。 展开更多
关键词 绿色技术创新 供应链溢出 供应链治理 抑制效应
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农业履带车驱动电机零低速控制与死区补偿 认领 引用
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作者 梁新成 杨谊恒 +2 位作者 陈欣 刘愚成 李云伍 《农业工程学报》 EI CAS CSCD 北大核心 2026年第8期36-46,共11页
永磁同步电机在零低速区间控制性能欠佳,导致农业履带车在丘陵山区难以实现精准作业。针对该问题,该研究结合现有基础和丘陵山区的实际作业工况特征,提出一种融合高频注入法与非线性观测器的复合控制策略。通过系统分析逆变器死区时间... 永磁同步电机在零低速区间控制性能欠佳,导致农业履带车在丘陵山区难以实现精准作业。针对该问题,该研究结合现有基础和丘陵山区的实际作业工况特征,提出一种融合高频注入法与非线性观测器的复合控制策略。通过系统分析逆变器死区时间和非线性因素对电机运行特性的影响,设计对应的补偿方案,以削弱上述因素带来的不利影响。建立永磁同步电机(permanent magnet synchronous motor,PMSM)数学模型,对比无补偿方案与死区时间-非线性因素复合补偿策略下的电机三相电流波形,结果表明:经补偿后电机电流中的死区效应与抖振现象得到显著抑制,电流波形稳定性大幅提升。搭建试验平台并在设定负载条件下开展电机启动与工况切换试验。试验结果表明所提复合控制策略有效,即使在高频注入法与磁链观测器的切换过程中,系统仍可维持稳定运行。相较于无补偿控制,采用复合补偿策略后空载工况下电机电流总谐波畸变(total harmonic distortion,THD)降低6.34个百分点,负载工况下THD降低5.26个百分点。超扭滑模自抗扰控制对比试验表明,该控制策略可基本消除电机运行时的转速超调,进一步提高系统的控制精度。研究结果表明,所提方法对于改善农业履带车运行性能具有重要价值,可为提升丘陵山区农业机械化水平提供理论依据与技术支撑。 展开更多
关键词 履带车 谐波抑制 永磁同步电机 高频方波注入法 死区效应补偿 超扭滑模
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“人-宠”关系何以重构单亲家庭大学生生命价值观 认领 引用
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作者 王紫祎 王筱蓓 何宁 《中国健康心理学杂志》 2026年第8期1226-1236,共11页
目的:单亲家庭大学生常因社会支持不足而表现出消极的生命价值观。尽管现有研究证实伴侣动物能显著提升个体心理健康水平,但对其如何影响个体的意义感知与生命价值仍缺乏深入探讨。本研究旨在探索人宠互动对单亲家庭大学生生命价值的促... 目的:单亲家庭大学生常因社会支持不足而表现出消极的生命价值观。尽管现有研究证实伴侣动物能显著提升个体心理健康水平,但对其如何影响个体的意义感知与生命价值仍缺乏深入探讨。本研究旨在探索人宠互动对单亲家庭大学生生命价值的促进机制。方法:抽取836名大学生被试参与动物生命态度问卷编制;抽取495名大学生,采用人口学问卷、生命价值观量表和动物生命态度问卷施测。结果:①自编动物生命态度问卷三因子模型拟合良好(χ2/df=2.66,GFI=0.93,RMSEA=0.06,RMR=0.04,CFI=0.94,NFI=0.91,NNFI=0.93,TLI=0.93,AGFI=0.91,IFI=0.94),信效度指标佳,可用于进一步研究;②当前大学生生命价值观整体得分偏高(120.40±14.30),人生态度较为积极;③当前大学生动物生命态度整体得分较高(61.84±6.42),倾向于生命平等观;④单亲家庭大学生生命价值观显著低于非单亲家庭(t=-3.15,P=0.002),差异有统计学意义,动物生命态度在单亲家庭状况对生命价值观的影响中起到遮掩作用;⑤养宠物经历显著调节单亲家庭被试的动物生命态度,构成有调节的中介模型。结论:单亲家庭状况对生命价值观产生直接负向影响,而宠物饲养可通过帮助个体建立生命平等的认知有效缓解这一不利影响。 展开更多
关键词 生命价值重建 遮掩效应 问卷编制 动物生命态度 单亲家庭大学生
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