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Engineering molecular regulation for SiO_(x) with long-term stable cycle and high Coulombic efficiency as lithium-ion battery anodes

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Rare Metals 2024年第2期43卷 588-598页

作者： Fei Wang Han Gao Zhao-Yu Niu yao-peng Zheng Ming-Yan Chuai Jia-Nan Xu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China University of Science and Technology of China Hefei230026China

In the current situation where the practical application of silicon anode materials encounters great challenges,silicon oxide(SiO_(x),0≤x≤2)has attracted the attention of researchers due to its relatively small volume expansion,stable cycling performance,and low cost,which is possible to realize commercial applications earlier than silicon ***,it remains a challenge to prepare SiO_(x)materials with long-term stable cycling performance and high Coulombic efficiency using low-cost *** this work,SiO_(x)anode material with high Coulombic efficiency and good long-term cycling stability was prepared at a low cost by hydrolysis of siloxane and in situ polymerization of phenolic *** hydrolysis of siloxane was further regulated by different silane coupling agents to regulate the size and microstructure of prepared SiO_(x)materials,which displayed the substantially improved electrochemical *** excellent electrochemical performance of SiO_(x)prepared by regulated hydrolysis of siloxane with silane coupling agents is attributed to the effect of silane coupling agent on size and microstructure of SiO_(x),revealing that the strategy of modulating the hydrolysis of siloxane by silane coupling agent is a potential method to prepare high-performance SiO_(x)materials.

关键词： Hydrolysis Silane coupling agent Long cycle SiO_(x) anode Lithium-ion battery(LIB)

The biological functions and metabolic pathways of valine in swine

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Journal of Animal Science and Biotechnology 2024年第1期15卷 20-34页

作者： Chuni Wang yao peng Yiru Zhang Juan Xu Sheng Jiang Leli Wang Yulong Yin Institute of Subtropical Agriculture Chinese Academy of SciencesChangshaChina Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation College of Life SciencesHunan Normal UniversityChangshaChina Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjinChina

Valine is an essential amino acid and a type of branched-chain amino acid. Due to the involvement of branchedchain amino acids in various metabolic pathways, there has been a surge of interests in valine nutrition and its role in animal physiology. In pigs, the interactions between valine and other branched-chain amino acids or aromatic amino acids are complex. In this review, we delve into the interaction mechanism, metabolic pathways, and biological functions of valine. Appropriate valine supplementation not only enhances growth and reproductive performances, but also modulates gut microbiota and immune functions. Based on past observations and interpretations, we provide recommended feed levels of valine for weaned piglets, growing pigs, gilts, lactating sows, barrows and entire males. The summarized valine nutrient requirements for pigs at different stages offer valuable insights for future research and practical applications in animal husbandry.

关键词： Additional dosage Biological function Metabolic pathway Pig Valine

Clinical Efficacy of Pentoxifylline Combined with Thioctic Acid in the Treatment of Painful Diabetic Peripheral Neuropathy

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Journal of Clinical and Nursing Research 2024年第7期8卷 123-127页

作者： Dengjuan Ma Shilong Zhang peng yao The Second People’s Hospital of Qingyang City Qingyang 745000Gansu ProvinceChina

Objective:To observe the efficacy of pentoxifylline+thioctic acid in the treatment of patients with painful diabetic peripheral neuropathy(PDPN).Methods:70 patients with PDPN admitted from October 2019 to October 2022 were selected and randomly grouped,with pentoxifylline+thioctic acid treatment in Group A and thioctic acid treatment in Group B,and the treatment efficacy was ***:The treatment efficacy in Group A was higher than that of Group B,P<0.05;the points of each symptom of PDPN in Group A were lower than that of Group B,P<0.05;the C-reactive protein and electromyography indexes of PDPN patients in Group A were better than that of Group B,P<***:PDPN patients treated with pentoxifylline+thioctic acid can optimize nerve function,inhibit inflammation progression,and reduce PDPN symptoms,which is an efficient and feasible treatment option.

关键词： Thioctic acid Pentoxifylline Painful diabetic peripheral neuropathy Efficacy

论惩罚性赔偿在生态环境损害救济场域中的适用

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内蒙古社会科学 2024年第2期45卷 112-121页

作者：彭中遥湖南大学法学院湖南长沙410082

我国《民法典》第1232条所创设的环境侵权惩罚性赔偿制度具有典型的功利主义色彩与实用主义考量,其能否适用于生态环境损害救济场域在学理上存在较大争议。依照最高人民法院2022年印发的《关于审理生态环境侵权纠纷案件适用惩罚性赔偿... 详细信息

我国《民法典》第1232条所创设的环境侵权惩罚性赔偿制度具有典型的功利主义色彩与实用主义考量,其能否适用于生态环境损害救济场域在学理上存在较大争议。依照最高人民法院2022年印发的《关于审理生态环境侵权纠纷案件适用惩罚性赔偿的解释》,该项制度主要适用于环境侵权私益损害填补场域,如有必要,方可参照适用于生态环境公益损害救济场域。但从我国环境司法实践情况看,惩罚性赔偿却呈现出“重公益、轻私益”的重心颠倒之态,且存在过度威慑行为人、规制效率低下等诸多问题。基于惩罚性赔偿公法私法化的法律性质,以及作为公法规制补充手段的基本定位,宜从主观故意、行为违法、后果严重三个维度合理限缩其在生态环境损害救济场域中的适用空间。因此,有必要依照“严格审慎”的基本态度,酌情计算相关惩罚性赔偿金的数额,具体应以期间损害、永久性损害为基数,采用2倍以内的“倍率封顶式”计算方式。最后,为实现“过罚相当”的基本原则,还应妥善处理好惩罚性赔偿与行政罚款、刑事罚金等金钱类环境法律责任的关系,以确保相关制度能够发挥合力而非干扰排挤。

关键词：生态环境损害惩罚性赔偿公法私法化公法规制之补充

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新时代环境行政处罚制度变革的反思与完善

中国地质大学学报（社会科学版） 2024年第4期24卷 49-60页

作者：彭中遥湖南大学法学院湖南长沙410082

当前,我国环境行政处罚制度变革的实践探索大体存在生态环境领域“不予行政处罚”裁量权界限不清、行政处罚与生态环境损害赔偿等责任重复适用、环境执法权“上收”与执法力量“下沉”相冲突等问题。提炼其共性特征可知,这些问题都可归... 详细信息

当前,我国环境行政处罚制度变革的实践探索大体存在生态环境领域“不予行政处罚”裁量权界限不清、行政处罚与生态环境损害赔偿等责任重复适用、环境执法权“上收”与执法力量“下沉”相冲突等问题。提炼其共性特征可知,这些问题都可归结为整体主义思维缺失导致的制度变革之间的冲突与抵牾问题。鉴于此,需依循整体系统观提升生态环境领域“不予行政处罚”的规范化水平,完善行政处罚与生态环境损害赔偿等金钱类责任的折抵规则,并实现环境保护垂直管理制度改革与综合执法改革的有机衔接,以从事理与法理双重维度确保环境行政处罚制度变革的统筹性推进。

关键词：环境行政规制环境行政处罚生态文明体制改革整体系统观

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高校信息素养教育课程思政的生成逻辑与实践进路

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图书情报工作 2024年第14期68卷 58-67页

作者：江云文洁彭瑶重庆理工大学图书馆重庆400054

[目的/意义]针对信息素养教育课程思政的现实瓶颈问题及研究现状,尝试构建适切课程特点的,集细节切入与组织架构共生的课程思实施路径,为相关教学和研究提供参考。[方法/过程]从课程认同、教师素养、学习团队、边界意识、科研盲点及顶... 详细信息

[目的/意义]针对信息素养教育课程思政的现实瓶颈问题及研究现状,尝试构建适切课程特点的,集细节切入与组织架构共生的课程思实施路径,为相关教学和研究提供参考。[方法/过程]从课程认同、教师素养、学习团队、边界意识、科研盲点及顶层设计等6个维度,微观与宏观结合,对其课程思政的路径进行了系统探索。具体实践进路为:重塑课程价值—涵养师资队伍—搞好教学团建—筑牢边界防线—扫除科研盲点—开对谋划方子。由此,整体架构得以勾勒:起点是课程认同,目标是育人生态,关键是师资团队,重点是素养培育。[结果/结论]“创设情境活动”深受学生喜爱,能在任务驱动中不自觉实现思政教育;“扫除科研盲点”,有利于克服学术误区,培育科学素养;师资队伍涵育与边界意识培养能促进育人生态建设,为相关课程思政提供有益借鉴。

关键词：信息素养教育课程思政生成逻辑

基于生态系统服务供需的临沂市固碳生态网络构建

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应用生态学报 2024年第3期35卷 759-768页

作者：梁华秋沈梦晗邵明姚朋北京林业大学园林学院北京100083

碳排放的加剧是全球变暖的重要原因之一,城市作为碳排放的重点区域急需提升整体固碳能力。固碳服务可在供给与需求区域之间依靠大气的流通实现相邻区域间生态系统服务的转移。本研究以临沂市为例,应用最小累积阻力模型提取供需匹配路径... 详细信息

碳排放的加剧是全球变暖的重要原因之一,城市作为碳排放的重点区域急需提升整体固碳能力。固碳服务可在供给与需求区域之间依靠大气的流通实现相邻区域间生态系统服务的转移。本研究以临沂市为例,应用最小累积阻力模型提取供需匹配路径并进行固碳生态网络的构建。结果表明:研究区域固碳服务供给量较高的区域位于北部和南部,现有供给总量约可解决60%的需求总量;供需空间分布不平衡,仍有54%的可解决周边固碳需求的区域被闲置;优化供需匹配路径能保持较好的物质能量传播效率,成本较低,潜在固碳能力较强的路径位于研究区中部和西北部。在固碳生态网络的建设中,需加强固碳服务供给端的保护与修复,实现固碳服务需求端的减碳排与强固碳,并做到供需匹配路径的优化与协调。该方法通过生态系统服务供给过剩区域为周边高需求区域提供服务,优化整体资源配置,可提升区域固碳能力。

关键词：生态系统服务供需固碳服务固碳生态网络临沂市

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竹纤维粒径与比例对石竹塑复合材料的性能影响

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北京林业大学学报 2024年第1期46卷 131-140页

作者：詹婷任津源彭尧曹金珍北京林业大学材料科学与技术学院木质材料科学与应用教育部重点实验室北京100083 台州市黄岩津泓玩具有限公司浙江台州318024 台州市津泓新材料有限公司浙江台州318024

【目的】阐明不同竹纤维粒径和原料配比对竹纤维/聚丙烯/碳酸钙复合材料物理力学性能的影响机理,为石竹塑复合材料的工业化生产与应用提供依据。【方法】以碳酸钙、竹纤维和聚丙烯为原料,在控制竹纤维粒径(40目、80目和120目)与原料配... 详细信息

【目的】阐明不同竹纤维粒径和原料配比对竹纤维/聚丙烯/碳酸钙复合材料物理力学性能的影响机理,为石竹塑复合材料的工业化生产与应用提供依据。【方法】以碳酸钙、竹纤维和聚丙烯为原料,在控制竹纤维粒径(40目、80目和120目)与原料配比的基础上,制备竹纤维/聚丙烯/碳酸钙复合材料,考察其物理力学性能,并采用扫描电子显微镜、热重分析仪和熔融指数仪对复合材料的微观结构、热稳定性和流动性进行表征。最后,综合考虑生产成本与相关性能要求,为竹纤维/聚丙烯/碳酸钙复合材料的生产与应用提出建议。【结果】随着碳酸钙添加量的增加,复合材料的拉伸强度、弯曲强度和弹性模量均逐渐下降,而密度则呈上升趋势。竹纤维粒径对复合材料物理力学性能的影响较为显著。当竹纤维粒径为80目,碳酸钙和竹纤维添加量分别为5%和45%时,复合材料的拉伸强度、弯曲强度和弹性模量最优,分别为36.09 MPa、62.6 MPa和4.30 GPa。碳酸钙添加量对复合材料冲击强度的影响不大。此外,随着碳酸钙添加量的增加,复合材料的热稳定性与熔体流动性均有所改善。当碳酸钙添加质量占比为20%时,复合材料的熔体流动速率为16.50 g/10 min,比未添加组提高了8.98%,加工性能得到改善。【结论】选用80目竹纤维的复合材料具有较优的物理力学性能,在添加碳酸钙后,复合材料的原料成本可降低1.63%~6.54%,且其相关指标仍远高于行业标准要求。

关键词：复合材料竹纤维石竹塑复合材料碳酸钙物理力学性能

Towards High-Performance Graph Processing: From a Hardware/Software Co-Design Perspective

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Journal of Computer Science & Technology 2024年第2期39卷 245-266页

作者：廖小飞赵文举金海姚鹏程黄禹王庆刚赵进郑龙张宇邵志远 National Engineering Research Center for Big Data Technology and System School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan 430074China Services Computing Technology and System Laboratory School of Computer Science and Technology Huazhong University of Science and TechnologyWuhan 430074China Cluster and Grid Computing Laboratory School of Computer Science and TechnologyHuazhong University of Science and TechnologyWuhan 430074China Zhejiang Lab Hangzhou 311121China

Graph processing has been widely used in many scenarios,from scientific computing to artificial *** processing exhibits irregular computational parallelism and random memory accesses,unlike traditional ***,running graph processing workloads on conventional architectures(e.g.,CPUs and GPUs)often shows a significantly low compute-memory ratio with few performance benefits,which can be,in many cases,even slower than a specialized single-thread graph *** domain-specific hardware designs are essential for graph processing,it is still challenging to transform the hardware capability to performance boost without coupled software *** article presents a graph processing ecosystem from hardware to *** start by introducing a series of hardware accelerators as the foundation of this ***,the codesigned parallel graph systems and their distributed techniques are presented to support graph ***,we introduce our efforts on novel graph applications and hardware *** results show that various graph applications can be efficiently accelerated in this graph processing ecosystem.

关键词： graph processing hardware accelerator software system high performance ecosystem