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Journal of Mountain Science 2024年第3期21卷 867-881页

作者： JIAO Weizhi ZHANG Ming LI Peng XIE Junjin pang haisong LIU Fuxing YANG Long Faculty of Engineering China University of GeosciencesWuhan 430074China

Red clay landslides are widely distributed worldwide,resulting in severe loss of life and *** rainfall-induced red clay slopes have received extensive attention,the role of cracks in the evolutionary process of red clay slopes and their connection to failure mechanisms is still poorly understood.A comprehensive approach integrating field investigation,laboratory tests,and numerical simulations was conducted to study the 168 red clay landslides in Xinshao County,*** results show that red clay is prone to forming cracks at high moisture content due to its low swelling and high shrinkage *** failure mode of red clay slopes can be summarized in three stages:crack generation,slope excavation,and slope ***,the retrospective analysis and numerical simulations of the typical landslide in Guanchong indicated that intense rainfall primarily impacts the shallow layer of soil within approximately 0.5 m on the intact ***,cracks change the pattern of rainfall infiltration in the *** infiltrates rapidly through the preferential channels induced by the cracks rather than uniformly and slowly from the slope *** results in a significant increase in both the depth of infiltration and the saturated zone area of the cracked slope,reaching 3.8 m and 36.2 m^(2),***,the factor of safety of the slope decreases by 13.4%compared to the intact slope,ultimately triggering *** study can provide valuable insights into understanding the failure mechanisms of red clay slopes in China and other regions with similar geological settings.

关键词： Red clay slopes Cracks Preferential flow Failure mechanism

基于RAMMS数值模拟的短时强降雨型泥石流危险性评价

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地质科技通报 2024年第2期43卷 215-225页

作者：庞海松谢骏锦张小明王官贺张明中国地质大学(武汉)工程学院武汉430074 浙江省工程物探勘察设计院有限公司杭州310005

浙江省由短时强降雨诱发的泥石流灾害频发,严重威胁当地居民的生命财产安全,因此对此类泥石流进行危险性评价对浙江省“灾害智治”工作具有十分重要的理论与实际应用价值。为研究浙江短时强降雨诱发小型泥石流的危险性,选取武山坑泥石... 详细信息

浙江省由短时强降雨诱发的泥石流灾害频发,严重威胁当地居民的生命财产安全,因此对此类泥石流进行危险性评价对浙江省“灾害智治”工作具有十分重要的理论与实际应用价值。为研究浙江短时强降雨诱发小型泥石流的危险性,选取武山坑泥石流为对象,通过现场调查、三维倾斜摄影与数值模拟等手段,查明了武山坑泥石流的地质环境与发育特征,揭示了由短时强降雨诱发的泥石流灾害链生过程特征,选用RAMMS软件对不同降雨频率下泥石流运动特征进行了模拟,获取了泥石流深度、流速、堆积范围等特征参数,并基于特征参数进行了泥石流危险性评价。研究结果表明:陡坡处松散岩土体在短时强降雨作用下发生浅层滑坡,随后在坡面与沟道地形控制下向沟口运移,运动过程中通过侵蚀作用扩大泥石流规模,最终在宽缓堆积区沉积。随着研究区降雨强度增大至50 a一遇及100 a一遇,泥石流冲出规模扩大,但受限于堆积区宽缓的地形条件,未能于沟口形成有效冲出;但堆积扇上游居民区泥石流深度、流速等强度指标显著增大,堆积区内高强度区域面积大小由7276 m^(2)增大至12660 m^(2)。结合泥石流活跃性分析结果,采取形成区雨量监测、主沟谷流通区构建刚性、柔性或狭缝拦挡坝以及堆积区设置导流渠相结合的治理措施,可有效保障居民生命财产安全。研究成果可为武山坑及浙江省此类泥石流危险性评价、防治工程设计提供参考。

关键词：短临强降雨泥石流灾害链 RAMMS 危险性评价

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强震区沟道堰塞体失稳模式及其动力学特征

地球科学 2023年第8期48卷 3115-3126页

作者：周超常鸣徐璐庞海松余斌成都理工大学地质灾害防治与地质环境保护国家重点实验室四川成都610059

强震触发的大量崩塌滑坡所形成的松散固体物质堆积于泥石流沟道,容易形成天然堰塞体,在强降雨和上游流体的冲蚀下极易失稳形成溃决型泥石流.采用自制泥石流试验水槽,通过控制坝体颗粒组成和水动力条件,实施了12组堰塞体失稳模拟试验,获... 详细信息

强震触发的大量崩塌滑坡所形成的松散固体物质堆积于泥石流沟道,容易形成天然堰塞体,在强降雨和上游流体的冲蚀下极易失稳形成溃决型泥石流.采用自制泥石流试验水槽,通过控制坝体颗粒组成和水动力条件,实施了12组堰塞体失稳模拟试验,获取了堰塞体的破坏过程、溃口流量和相关力学参数的演化特征.将堰塞体划分为漫顶破坏、滑面破坏、管涌破坏3种不同失稳模式,并结合堰塞体的颗粒组成结构分析了失稳机理及特征,通过动力学过程分析分别建立了不同失稳模式下的堰塞体稳定性判别式.研究成果对于溃决型泥石流防治工程的规划设计以及提高泥石流防灾减灾水平具有重要意义.

关键词：堰塞体失稳模式动力学特征临界条件滑坡

Lanthanum promoting bone formation by regulating osteogenesis,osteoclastogenesis and angiogenesis

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Journal of Rare Earths 2024年第3期42卷 621-628,I0007页

作者： Dandan Zou Runlian Lin Yu Han Juan Jia Guoqiang Zhou haisong Zhang Kun Ge Hebei Key Laboratory of Chronic Kidney Diseases and Bone Metabolism Affiliated Hospital of Hebei UniversityBaoding071000China Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education Key Laboratory of Chemical Biology of Hebei ProvinceCollege of Chemistry and Environmental ScienceHebei UniversityBaoding071002China

With lanthanum(La) in agriculture, medicine, and the chemical industry, La shows accumulation in the body, especially in the bone, because of its similar structure to calcium. Moreover, La has a direct role in bone formation regulating osteoblasts and osteoclasts. Nevertheless, bone formation is complex under the regulation of osteogenesis, osteoclastogenesis, and angiogenesis in the bone microenvironment. It is difficult to comprehensively understand the regulation of bone homeostasis from a single kind of ***, some bone microenvironment-related cells and mouse calvaria culture models were used to study the regulatory effect of La-based compound-lanthanum nitrate(La(NO_(3))_(3)) on bone ***(NO_(3))_(3) has good biological safety, and the osteogenic differentiation is significantly increased under La(NO_(3))_(3) treatment for bone marrow mesenchymal stem cells(BMMSC). In contrast, the differentiation,maturation, and bone erosion ability of osteoclasts are significantly decreased. Meanwhile, the angiogenesis ability of human umbilical vein endothelial cells(HUVEC) is significantly promoted when treated with La(NO_(3))_(3). Furthermore, bone metabolism and angiogenesis are improved under La(NO_(3))_(3) treatment in the calvaria ex vivo culture model and BMMSC-HUVEC co-culture system. These results suggest that La has the beneficial effect of promoting bone metabolism and improving bone formation in the bone microenvironment.

关键词： Lanthanum Bone microenvironment Osteogenic differentiation Angiogenesis Rare earths

Pd/N-doped carbon dots@dendritic mesoporous silica nanospheres:A highly efficient catalyst for the hydrogenation of 4-nitrophenol

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Nano Research 2024年第9期17卷 7967-7974页

作者： Weiruo Liu Yanbin Zhu Jiwei Wang haisong Feng Yunpu Zhai Wei Li Dongyuan Zhao College of Chemistry Zhengzhou University100 Kexue AvenueZhengzhou 450001China Department of Chemistry Laboratory of Advanced MaterialsShanghai Key Laboratory of Molecular Catalysis and Innovative Materialsand State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Highly dispersed Pd/N-doped carbon dots(Pd/NCDs)were successfully immobilized in the mesoporous channels of amino-functionalized dendritic mesoporous silica nanospheres(NMS).The synthesized Pd/NCDs@NMS catalyst exhibits outstanding performance in the catalytic reduction of 4-nitrophenol(4-NP),achieving a turnover frequency of 1461.8 mol·molPd^(-1)·h^(-1),with the conversion rate remaining above 80%after 11 *** and density functional theory calculations reveal that the NCDs significantly affect the electronic structure of Pd nanoparticles,leading to changes in the energy barriers for the adsorption of 4-NP at the Pd sites and the conversion of 4-NP reaction intermediates,which is a key factor contributing to the catalytic *** study offers a new strategy for synthesizing carbon-dot-modified metal-based catalysts.

关键词： palladium nanoparticles nitrogen-doped carbon dots dendritic mesoporous silica catalytic hydrogenation 4-nitrophenol reduction

Chitosan-based triboelectric materials for self-powered sensing at high temperatures

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International Journal of Minerals,Metallurgy and Materials 2024年第11期31卷 2518-2527页

作者： Wencan Chen Chao Li Yehan Tao Jie Lu Jian Du haisong Wang Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic BiorefineryCollege of Light Industry and Chemical EngineeringDalian Polytechnic UniversityDalian 116034China

Although biopolymers have been widely utilized as triboelectric materials for the construction of self-powered sensing systems,the annihilation of triboelectric charges at high temperatures restricts the output signals and sensitivity of the assembled ***,a novel chitosan/montmorillonite/lignin(CML)composite film was designed and employed as a tribopositive layer in the assembly of a self-powered sensing system for use under hot conditions(25-70℃).The dense contact surface resulting from the strong intermolecular interaction between biopolymers and nanofillers restrained the volatilization of induced *** optimized CML-TENG delivered the highest open-circuit voltage(V_(oc))of 262 V and maximum instantaneous output power of 429 mW/m^(2).Pristine CH-TENG retained only 39%of its initial Voc at 70℃,whereas the optimized CM_(5)L_(3)-TENG retained 66%of its initial *** work provides a new strategy for suppressing the annihilation of triboelectric charges at high temperatures,thus boosting the development of self-powered sensing devices for application under hot conditions.

关键词： chitosan lignin montmorillonite triboelectric nanogenerator hot conditions

High-Quality Development of Foreign Exchange Reserves Supports Chinese Modernization

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China Forex 2024年第1期 63-64页

作者： JIAO haisong SAFE Investment Center

human-computer interactive and intelligent technology support system,guidingbusiness personnel to take the initiative and use their own creativity,with the hope of stimulatingthe potential of technology and enhancing the efficient integration of technology and *** will help continuously improve the enabling role of digital technology in regulatory decision-making.

关键词： continuously Quality technology

The Porous Nanocarbons with Polynuclear Aromatic Cores

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CCS Chemistry 2024年第10期6卷 2427-2438页

作者： Chenxi Zhou Ruoning Li Yan Chen Xinyue Liu haisong Zhao Xue-Qing Yang Zhongjie Ren Dong Wang Zhaohui Wang Lei Zhang Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Lab of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029 CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190 Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of ChemistryTsinghua UniversityBeijing 100084

Three porous nanocarbons,1–3 that comprise pyrene,corannulene,and coronene cores encircled by cyclo-meta-phenylene(CMP)interconnections,have been synthesized and *** interconnected CMPs caused different curvatures of the cores and imparted high solubility,large bathochromic shift,strong fluorescence,and low reduction potential to the *** solution,these porous nanocarbons existed as a complex mixture of dynamic processes that certainly influenced one another within any single molecule,leading to a set of rather simple proton nuclear magnetic resonance(^(1)H NMR)*** crystal X-ray diffraction and computational minimum energy analysis revealed the boatand saddle-like conformations of 1–3 in the solid state,significantly deviating from their conformations on the Au(111)***,both 1 and 2 could form 2:1 complexes with C_(60),accompanied by adaptive geometry *** addition,1 served as a sky-blue emitter for an organic light-emitting diode(OLED).This work gives access and insights into a model system consisting of porous nanocarbons with intriguing supramolecular and optoelectronic properties.

关键词： porous nanocarbon cyclophenylenes aromatic core structural dynamics crystal packing

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法典化时代刑事诉讼法再修改的基本向度

法学论坛 2024年第2期39卷 39-52页

作者：喻海松中国刑法学研究会北京100081

在民法典业已开启的法典化时代推进刑事诉讼法再修改,法典化问题自然备受关注。然而,法典化还是再法典化的争论并非关键问题,更为重要的是修法路径和具体内容。整合“法外规范”,适当增加法条文数量,既是趋势使然,也是完成修法任务的重... 详细信息

在民法典业已开启的法典化时代推进刑事诉讼法再修改,法典化问题自然备受关注。然而,法典化还是再法典化的争论并非关键问题,更为重要的是修法路径和具体内容。整合“法外规范”,适当增加法条文数量,既是趋势使然,也是完成修法任务的重要路径。按照推进以审判为中心的刑事诉讼制度改革的要求,本次修法应当将确立以审判为中心作为目标。构建“对人之诉”和“对物之诉”的双层诉讼目标,进一步强化涉案财物处置,是产权保护的必然要求。在轻罪时代,尤需合理配置刑事诉讼资源,在简案快审的同时着力推进疑案精审。基于立法应当回应司法实践的要求,本次修法应当全流程检视刑事诉讼程序的具体实务问题,进一步完善相关制度设计和运行措施,为推进刑事程序法治现代化奠定坚实的立法基础。

关键词：刑事诉讼法再法典化以审判为中心对物之诉诉讼资源

基于GIS与加权信息量模型的城镇地质灾害易发性评价——以大新镇为例

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安全与环境工程 2022年第4期29卷 119-128页

作者：焦伟之张明谢鑫鹏李成文刘涛庞海松中国地质大学(武汉)工程学院湖北武汉430074

大新镇位于资水中游河谷地区,境内地形陡峭,地质灾害沿河谷两岸多发,开展地质灾害易发性评价对大新镇地质灾害预测预报、防灾减灾具有重要意义。以大新镇1∶5万地质灾害详细调查数据为基础,选取坡高、坡向、坡度、工程岩组、构造、河流... 详细信息

大新镇位于资水中游河谷地区,境内地形陡峭,地质灾害沿河谷两岸多发,开展地质灾害易发性评价对大新镇地质灾害预测预报、防灾减灾具有重要意义。以大新镇1∶5万地质灾害详细调查数据为基础,选取坡高、坡向、坡度、工程岩组、构造、河流、道路7个评价因子,建立研究区地质灾害易发性评价指标体系;利用基于层次分析(AHP)模型和信息量(IV)模型改进后的加权信息量(WIV)模型对研究区开展地质灾害易发性评价,并以信息量变化曲线的突变点为分区阈值界限将研究区划分为低、中、较高、极高易发区;通过ROC曲线对评价结果进行检验,结果表明WIV模型得到的AUC值为0.745,IV模型得到的AUC值为0.712,AHP模型得到的AUC值为0.663,WIV模型相比IV模型和AHP模型评价精度分别提高了5%和12.3%,说明改进后的WIV模型评价精度较高,适应于小区域城镇尺度地质灾害易发性评价,评价结果对该区域地质灾害风险防治与管控具有指导意义。

关键词：城镇地质灾害易发性评价层次分析(AHP)模型信息量(IV)模型加权信息量(WIV)模型大新镇