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Water Science and Engineering 2016年第3期9卷 183-194页

作者： Dong-mei Sun xiao-min Li Ping Feng yong-ge Zang State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin University

Generally, most soil slope failures are induced by rainfall infiltration, a process that involves interactions between the liquid phase, gas phase,and solid skeleton in an unsaturated soil slope. In this study, a loosely coupled liquid-gas-solid three-phase model, linking two numerical codes,TOUGH2/EOS3, which is used for water-air two-phase flow analysis, and FLAC^(3D), which is used for mechanical analysis, was established. The model was validated through a documented water drainage experiment over a sandy column and a comparison of the results with measured data and simulated results from other researchers. The proposed model was used to investigate the features of water-air two-phase flow and stress fields in an unsaturated soil slope during rainfall infiltration. The slope stability analysis was then performed based on the simulated water-air two-phase seepage and stress fields on a given slip surface. The results show that the safety factor for the given slip surface decreases first, then increases, and later decreases until the rainfall stops. Subsequently, a sudden rise occurs. After that, the safety factor decreases continually and reaches its lowest value, and then increases slowly to a steady value. The lowest value does not occur when the rainfall stops, indicating a delayed effect of the safety factor. The variations of the safety factor for the given slip surface are therefore caused by a combination of pore-air pressure, matric suction, normal stress, and net normal stress.

关键词： Coupled liquid-gas-solid three-phase model Pore-air pressure Unsaturated soil slope stability Rainfall infiltration

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爆炸切割网络传爆中的间隙与角度效应

火工品 2025年第1期 37-43页

作者：周晓鹏姜勇袁航中国船舶集团有限公司第七一三研究所河南郑州450015 河南省水下智能装备重点实验室河南郑州450015

为研究爆炸切割网络中传爆节点处传爆能力的关键影响因素,通过改变切割索对传爆药柱的传爆间隙进行了平板传爆试验,将试验结果结合仿真分析确定了JO-11C传爆药柱的仿真材料参数,并进一步分析了传播角度对传爆能力的影响。研究结果表明:... 详细信息

为研究爆炸切割网络中传爆节点处传爆能力的关键影响因素,通过改变切割索对传爆药柱的传爆间隙进行了平板传爆试验,将试验结果结合仿真分析确定了JO-11C传爆药柱的仿真材料参数,并进一步分析了传播角度对传爆能力的影响。研究结果表明:随着传爆间隙的增加,传爆能力下降,切割索对传爆药柱的最大传爆间隙区间为2.0~2.5 mm;同时,传爆角度的增大能够显著提高传爆能力。本研究为爆炸切割网络的传爆性能研究以及提高武器系统的可靠性提供了参考。

关键词：爆炸切割网络传爆间隙传爆角度传爆药柱仿真分析

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非静水压作用下石膏电学性质的理论研究

原子与分子物理学报 2025年第6期42卷 129-135页

作者：周梅吴雷罗小松何宗润贵州民族大学物理与机电工程学院贵阳550025 重庆大学能源与动力工程学院重庆400044

地球内部广泛存在着差应力,这些外在因素的存在影响着矿物的性质,而矿物的电学性质与结构相变息息相关.为了更加了解地球内部结构与动力学过程,采用第一性原理方法,在等效平衡压0~10 GPa范围内计算地球内部浅层矿物石膏在静水压和非静... 详细信息

地球内部广泛存在着差应力,这些外在因素的存在影响着矿物的性质,而矿物的电学性质与结构相变息息相关.为了更加了解地球内部结构与动力学过程,采用第一性原理方法,在等效平衡压0~10 GPa范围内计算地球内部浅层矿物石膏在静水压和非静水压条件下的电学性质.计算结果表明:静水压和非静水压条件下无水石膏的密度和带隙变化基本一致,但二水石膏的密度和带隙在非静水压为6 GPa附近发生突变,这可能是由于非静水压环境使晶体结构更容易发生畸变,更有利于水分子氢键网络的重新排列和CaSO_(4)层间结构的塌缩,因此非静水压下可能更加有利于二水石膏在高温高压下的脱水反应.这对理解地幔中矿物的脱水和储水产生重大的影响,为理解地幔中矿物的脱氢和储水提供理论依据.

关键词：差应力石膏电学性质第一性原理

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规模化猪场主要疫病的免疫和监测

西南农业学报 2000年第C期13卷 78-83页

作者：林毅张道永杨晓梅邓小东王文贵李力曾惠张先惠四川省畜牧科学研究院中国成都610066

采用多种疫苗并按不同方法免疫猪 ,通过临床观察、血清学试验等 ,判定免疫保护效果。结果表明 ,猪瘟疫苗采用乳前免疫和在 2 0或 2 8日龄首免 ,6 0或70日龄二免的方法 ,在 1 80日龄时 ,猪瘟抗体阳性率均在 84%以上。猪大肠杆菌基因疫苗... 详细信息

采用多种疫苗并按不同方法免疫猪 ,通过临床观察、血清学试验等 ,判定免疫保护效果。结果表明 ,猪瘟疫苗采用乳前免疫和在 2 0或 2 8日龄首免 ,6 0或70日龄二免的方法 ,在 1 80日龄时 ,猪瘟抗体阳性率均在 84%以上。猪大肠杆菌基因疫苗对仔猪黄痢、白痢的保护率分别为 1 0 0 %和 91 8%。猪喘气病弱毒苗 +灭活苗 2次免疫的效果优于 2次弱毒苗和 2次灭活苗的免疫效果 ,免后 1 80天和 2 40天攻毒保护率分别为 1 0 0 %和 91 7%。 8个规模化试验猪场执行主要疫病的免疫和监测 3年来 ,母猪流产和死胎的发病率控制在 3%以下 ,全群死亡率降至 8%以下。

关键词：疫病免疫规模化猪场疫病监测传染病

朋辈心理咨询进社区:高校“一站式”学生社区心理育人功能实践路径研究

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黑龙江高教研究 2025年第1期43卷 135-139页

作者：邢晓雪王怀勇南京工业大学江苏南京211816 上海师范大学上海200234

结合高校“一站式”学生社区综合管理模式建设提质增效工作指南,探讨朋辈咨询进入学生社区的天然耦合性,并从社会生态系统理论视角提出朋辈咨询嵌入“一站式”学生社区实现心理育人功能的多重路径选择,在微观环境中注重发挥朋辈咨询员... 详细信息

结合高校“一站式”学生社区综合管理模式建设提质增效工作指南,探讨朋辈咨询进入学生社区的天然耦合性,并从社会生态系统理论视角提出朋辈咨询嵌入“一站式”学生社区实现心理育人功能的多重路径选择,在微观环境中注重发挥朋辈咨询员的匹配优势,在中观环境中以朋辈咨询体制为抓手优化社区心理育人体系建设,在宏观环境中利用朋辈咨询资源加强常态化的“文化渗透式”心理健康教育,全方位、立体式、浸润式打通高校心理育人“最后一公里”。

关键词： “一站式”学生社区朋辈咨询心理育人社会生态系统理论

新高考背景下深化高中教育教学改革应重视的几个问题

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教学与管理 2025年第1期 12-14页

作者：司晓宏马永昊陕西师范大学教育学部西安710062 陕西省社会科学院西安710061

自2014年新高考改革启动以来,已在全国29个省市逐步推进。调研发现,新高考在实际推进中给普通高中传统的教育、教学和管理带来了诸多压力与挑战,这突出表现为:“选课走班制”在实际推行中存在许多堵点;“学生综合素质评价”面临着评价... 详细信息

自2014年新高考改革启动以来,已在全国29个省市逐步推进。调研发现,新高考在实际推进中给普通高中传统的教育、教学和管理带来了诸多压力与挑战,这突出表现为:“选课走班制”在实际推行中存在许多堵点;“学生综合素质评价”面临着评价标准不一、结果应用受限等困境;“学生生涯规划教育”存在着专业性不强、效果不佳等问题;学生多样化自由选课凸显教师队伍结构性缺编等。针对上述问题,应加强普通高中选课走班制的资源条件支持,健全学生综合素质评价的体制机制,提高学生生涯规划教育的专业性和精准度,积极破解改革所导致的教师结构性缺编问题,以推动和确保新高考改革各项政策有效落地实施。

关键词：新高考改革选课走班制学生综合素质评价生涯规划教育教育教学改革

Impacts of climate change on optimal mixture design of blended concrete considering carbonation and chloride ingress

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Frontiers of Structural and Civil Engineering 2020年第2期14卷 473-486页

作者： xiao-yong WANG Department of Architectural Engineering Kangwon National UniversityChuncheon-si 24341Korea

Many studies on the mixture design of fly ash and slag ternary blended concrete have been ***,these previous studies did not consider the effects of climate change,such as acceleration in the deterioration of durability,on mixture *** study presents a procedure for the optimal mixture design of termary blended concrete considering climate change and ***,the costs of CO2 emissions and material are calculated based on the concrete mixture and unit *** cost is equal to the sum of material cost and CO2 emissions cost,and is set as the objective function of the ***,strength,slump,carbonation,and chloride ingress models are used to evaluate concrete *** effect of different climate change scenarios on carbonation and chloride ingress is considered.A genetic algorithm is used to find the optimal mixture considering various ***,ilustrative examples are shown for mixture design of ternary blended *** analysis results show that for termary blended concrete exposed to an atmospheric environment,a rich mix is necessary to meet the challenge of climate change,and for termary blended concrete exposed to a marine environment,the impact of climate change on mixture design is marginal.

关键词： termary blended concrete climate change optimal mixture design carbonation chloride ingress

Arsenic uptake and transport of Pteris vittata *** influenced by phosphate and inorganic arsenic species under sand culture

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Journal of Environmental Sciences 2007年第6期19卷 714-718页

作者： HUANG Ze-chun AN Zhi-zhuang CHEN Tong-bin LEI mei xiao Xi-yuan LIAO xiao-yong Centre for Environmental Remediation Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

In order to understand the similarity or difference of inorganic As species uptake and transport related to phosphorus in Ashyperaccumulator, uptake and transport of arsenate （As（V）） and arsenite （As（Ⅲ）） were studied using Pteris vittata L. under sand culture. Higher concentrations of phosphate were found to inhibit accumulation of arsenate and arsenite in the fronds of P. vittata. The reduction in As accumulation was greater in old fronds than in young fronds, and relatively weak in root and rhizome. Moderate increases, from 0.05 to 0.3 mmol/L, in phosphate reduced uptake of As（Ⅲ） more than As（Ⅴ）, while the reverse was observed at high concentrations of phosphate （≥1.0 mmol/L）. Phosphate apparently reduced As transport and the proportion of As accumulated in fronds of P. vittata when As was supplied as As（Ⅴ）. It may in part be due to competition between phosphorus and As（Ⅴ） during transport. In contrast, phosphate had a much smaller effect on As transport when the As was supplied as As（Ⅲ）. Therefore, the results from present experiments indicates that a higher concentration of phosphate suppressed As accumulation and transport in P. vittata, especially in the fronds, when exposed to As（Ⅴ）, but the suppression of phosphate to As transport may be insignificant when P. vittata exposed to As（Ⅲ） under sand culture conditions. The finding will help to understand the interaction of P and As during their uptake process in P. vittata.

关键词： arsenate arsenite As species Pteris vittata L. phosphate transport uptake

Analysis of the anti-T2DM components in dichloromethane fraction of Schisandra sphenanthera and its mechanism

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Traditional Medicine Research 2025年第1期10卷 27-43页

作者： Shi-Bo Feng Hai-Hui Jiang Hui-Li Kang Yi Jiang Hua-Wei Zhang xiao-mei Song Yu-Ze Li Wen-Li Huang Dong-Dong Zhang Chong Deng School of Pharmacy Shaanxi University of Chinese MedicineXianyang 712046China School of Pharmacy and Shaanxi Qinling Application Development and Engineering Center of Chinese Herbal Medicine Shaanxi University of Chinese MedicineXianyang 712046China Key Laboratory for Research and Development of“Qin Medicine”of Shaanxi Administration of Traditional Chinese Medicine Xianyang 712046China Shaanxi Key Laboratory of Research and Application of“Taibai Qi Yao” Xianyang 712046China

Background:The type 2 diabetes mellitus(T2DM)pharmacodynamic study of various parts of Schisandra sphenanthera was conducted in the previous stage,and it was found that dichloromethane extracted part(SDP)had a significant hypoglycemic ***,the components of SDP were analyzed,and the specific mechanism of its anti-T2DM was ***:We used a high-fat,high-sugar diet in combination with streptozotocin to induce a T2DM rat model,and the model rats were divided into two groups according to body weight and blood ***,oral glucose tolerance test,fasting blood glucose,low density lipoprotein cholesterol,superoxide dismutase,insulin,glycated hemoglobin,total cholesterol,nonesterified free fatty acids,alanine aminotransferase,high-density lipoprotein cholesterol,aspartate aminotransferase,malondialdehyde,and glutathione peroxidase were measured,organ indices were calculated,and pathological sections of pancreas and liver were *** 16S rRNA V3–V4 region of intestinal flora was sequenced to explore the effect of SDP on biochemical indicators and intestinal *** on the above indicators,the anti-T2DM mechanism of SDP in Schisandra sphenanthera was ***:After six weeks of administration,the biochemical indices of diabetic rats were diminished compared to the control *** SDP could significantly increase the gut microbialα-diversity index,resulting in significant changes in the flora of T2DM rats,with increased richness and diversity,reduced harmful flora,and significantly back-regulated the levels of acetic acid,propionic acid,and butyric ***:SDP can improve the symptoms associated with elevated blood glucose,dyslipidemia,elevated fasting insulin levels,and damaged glucose tolerance in *** against T2DM may be through the control of intestinal flora to normalize and exert anti-diabetic effect;its main active components may be lignans and terpenoids.

关键词： Schisandra sphenanthera T2DM intestinal flora HPLC

Oral Arsenic-Containing Qinghuang Powder:A Potential Drug for Myelodysplastic Syndromes

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Chinese Journal of Integrative Medicine 2022年第8期28卷 762-768页

作者： MING Jing LIU Wei-yi xiao Hai-yan XU yong-gang MA Rou HU xiao-mei Department of Hematology Xiyuan HospitalChina Academy of Chinese Medical SciencesBeijing100091China

Qinghuang Powder(QHP),an oral arsenic,has become an effective drug in the treatment of myelodysplastic syndromes(MDS)in Xiyuan Hospital,China Academy of Chinese Medical Sciences for many years,and the action mechanism of the compound or active ingredient AsSof QHP has been *** the relatively safety,chemotherapy-free and convenient oral profile,QHP is widely used in the clinical treatment for MDS patients,especially for elderly *** this review,the authors document the efficacy and safety of oral arsenic-containing compound QHP in the treatment of MDS,with a special focus on the association of efficacy of QHP with the cytogenetics,prognostic risk,DNA methylation,gene mutation,blood arsenic concentration,mechanism of action of AsSand the countermeasures against adverse reactions of gastrointestinal tract.

关键词： arsenic Qinghuang Powder myelodysplastic syndromes review Chinese medicine