Effect of toroidal mode coupling on explosive dynamics of m/n=3/1 double tearing mode

The CLT code was used to quantitatively study the impact of toroidal mode coupling on the explosive dynamics of the m/n=3/1 double tearing mode.The focus of this study was on explosive reconnection processes,in which the energy bursts and the main mode no longer dominates when the separation between two rational surfaces is relatively large in the medium range.The development of higher m and n modes is facilitated by a relatively large separation between two rational surfaces,a small q_(min)(the minimum value of the safety factor),or low resistivity.The relationships between the higher m and n mode development,explosive reconnection rate,and position exchange of 3/1 islands are summarized for the first time.Separation plays a more important role than q_(min)in enhancing the development of higher m and n modes.At a relatively large separation,the good development of higher m and n modes greatly reduces the reconnection rate and suppresses the development of the main mode,resulting in the main mode not being able to develop sufficiently large to generate the position changes of 3/1 islands.

探讨基于核心指标集构建中医特色的射血分数保留心力衰竭1+N模式疗效评价体系

核心指标集是就某一特定研究领域达成的所有临床研究都应该测量和报告的最少的临床结局,核心指标集可以提高临床疗效评价的规范性和可比性,是循证医学发展的必然、是中医药临床疗效评价的重要抓手、是推动中医药疗效评价与国际接轨的关键。如何运用核心指标集实现临床疗效国际化、标准化的同时,又能遵循中医诊疗特点体现自身优势是中医临床疗效评价的难点。针对这一难点,项目组创新性地提出了1+N模式的射血分数保留心衰(heart failure with preserved ejection fraction, HFpEF)疗效评价体系,即通用的核心指标集“1”+个性化指标集“N”,以满足循证医学和中医学疗效评价的双重需求。本文初探HFpEF疗效评价构建模式,主张在规范化基础上体现多样化和个性化的研究目的需求。结合HFpEF临床疗效评价的现状,综合业内专家意见,探讨了HFpEF 1+N模式疗效评价构建中核心指标集“1”的取舍以及“N”体系的构建思路,以期最大程度的形成符合中医药特色的临床评价体系新范式,推动中医药国际化进程。

基于NMR和GC-MS的动态分组实验教学模式探索——以“正溴丁烷制备”为例

针对“正溴丁烷的制备”实验中各类原料不同的用量、反应时长和原料加入顺序等设计了正交实验条件组合,并开放给15位同学分组进行动态选择。综合各组实验数据,得到最优的实验条件并对异常实验结果进行解释;通过核磁共振波谱仪(NMR)和气相色谱-质谱联用仪(GC-MS)等快速验证。与对照组相比,动态分组实验的同学在有机实验单元操作水平、仪器操作能力上明显提高,同时因实验过程中存在多种变量引导同学进行开拓性思考,增强了同学们提出问题、解决问题和设计新实验的能力,取得了良好的教学效果。

00Cr21Mn5Ni1.5N双相不锈钢冷轧工艺研究

采用OM、SEM、铁素体测量仪、维氏硬度计、万能试验机等研究了不同变形量的冷轧工艺对00Cr21Mn5Ni1.5N双相不锈钢微观组织与力学性能的影响。结果表明:热轧态00Cr21Mn5Ni1.5N钢的组织为铁素体和奥氏体双相组织。随着变形量的增加,两相组织沿着冷轧变形方向被拉长,组织中越来越多的奥氏体转变为形变诱导马氏体。当冷轧变形量达到55%时,00Cr21Mn5Ni1.5N钢中奥氏体基本转变为形变诱导马氏体。随着冷轧变形量的增加,00Cr21Mn5Ni1.5N钢的硬度、抗拉强度不断升高,塑性不断下降,强塑积先升高后降低。冷轧态00Cr21Mn5Ni1.5N钢中,变形量20%冷轧的试验钢的强塑积最佳,为15713.2 MPa·%。

喀斯特地貌地区GNSS高精度静态测量方案

喀斯特地貌地区控制点的高精度测量对区域地形调绘和水文测验均有重要意义。在喀斯特地貌地区传统测量困难,CORS站点稀疏,静态测量多路径效应严重,单点GNSS静态测量无法满足精度要求。为此,针对布设的237个GNSS E级控制点,设计出相应的GNSS静态测量方案以提高测量精度。该方案在测区中间添加1个全天候观测的固定基准站,测量时再添加1个移动基准站,与其它N个流动站进行同步测量,然后结合6个连续运行的CORS站点进行解算。最终静态测量的结果符合测量标准要求,其中控制检核点X坐标平均中误差为0.007 m,Y坐标平均中误差为0.018 m。测量的大地高结合广西似大地水准面精化模型进行精化后,控制点高程测量结果与测出的水准高程进行对比,较差中误差为0.024 m,且所有点较差都低于限差。“1+1+N”静态测量模式显著提高了喀斯特地貌地区测量精度,通过似大地水准面精化模型精化后的结果符合四等水准测量高程的要求。

基于“1+N”模式下智能制造专业学生实践能力提升研究

为解决职业教育中智能制造专业学生实践培养问题,探索应用“1+N”提升智能制造专业教学质量,促进校企多方联合参与教学,切实提升智能制造专业学生实践能力。该文首先介绍了“1+N”模式内涵及应用价值,从校企合作角度分析“1+N”模式下智能制造专业教育体系构建思路,说明了2022年以来的实践效果,总结了“1+N”模式应用过程发现的问题因素及未来发展建议。

“1+N”4C模式在糖尿病周围神经病变患者延续护理中的应用

目的探讨“1+N”4C模式在糖尿病周围神经病变患者延续护理中的应用价值。方法选取2022年1月至10月在我科接受治疗的60例糖尿病周围神经病变患者,以随机数字表法将其分为对照组(30例,常规延续护理)和观察组(30例,“1+N”4C模式延续护理)。比较两组的干预效果。结果干预后,观察组的空腹血糖(FBG)、餐后2 h血糖(2 h PG)水平及糖化血红蛋白(HbA1c)均低于对照组(P<0.05)。观察组的健康教育知晓率高于对照组(P<0.05)。干预后,观察组的感觉神经传导速度(SNCV)、运动神经传导速度(MNCV)高于对照组(P<0.05)。干预后,观察组的生活质量综合评定问卷-74(GQOLI-74)各维度评分均高于对照组(P<0.05)。结论“1+N”4C模式用于糖尿病周围神经病变患者延续护理中能提高血糖控制效果和健康教育知晓率,改善神经传导速度,提升患者生活质量。

1+1+N工作模式在高职院校学生公寓二级心理健康辅导站中的应用

学生公寓是学生日常生活的主要场所,也是学生心理问题发生、显现的重要情境。因此,在新时期高职院校的心理健康教育工作中,加强学生公寓二级心理健康辅导站建设的实践与研究,立足学生心理发展实际,积极探索以学生内生动力激活为重点的1+1+N工作模式,有效唤起学生对心理健康教育过程的认同与支持,对于切实促进学生公寓文化建设、管理工作与心理健康教育工作的有机结合,发挥二级心理健康辅导站的工作职能,引领学生心理素质提升,营造良性心理育人环境具有重要意义。

“1+N”延续护理模式在糖尿病护理中对患者自我管理能力与血糖控制的影响

目的分析“1+N”延续护理模式对糖尿病患者自我管理能力、血糖控制效果的改善作用。方法选择2022年1月—2024年1月霍邱县第二人民医院收治的90例糖尿病患者为研究对象,根据不同的护理方法分为两组,各45例。对照组进行常规护理,观察组进行“1+N”延续护理模式。比较两组自我管理能力、血糖水平、护理满意度。结果护理后,观察组规律用药评分、健康饮食评分、适量运动评分、血糖监测评分与足部护理评分、护理满意度均高于对照组,空腹血糖、餐后2 h血糖、糖化血红蛋白水平均低于对照组,差异有统计学意义(P均<0.05)。结论糖尿病患者护理中运用“1+N”延续护理模式,能提高患者自我管理能力、血糖控制效果与护理满意度。

构筑全新商业生态:阿里巴巴“1+6+N”组织变革战略分析

近年来,随着新一代信息技术的快速发展,数字经济成为经济发展中创新最活跃、增长速度最快、影响最广泛的产业领域。我国数字经济在产业规模、科技水平、平台影响力、独角兽企业数量等方面居于世界前列,经济增长引擎作用持续增强。阿里巴巴集团作为中国领先的互联网企业,战略性地提出了“1+6+N”组织变革,该组织变革是中国超大型公司治理的全新探索。文章运用PEST分析法和SWOT分析法,分别从外部环境和自身综合能力两个角度,分析了阿里巴巴“1+6+N”模式的变革动因及实施路径,总结了阿里巴巴“1+6+N”组织变革对企业自身和行业的影响,旨在为其他企业提供参考。

A model of continuum damage mechanics for high cycle fatigue of metallic materials

A non-linear continuum damage model was presented based on the irreversible thermodynamics framework developed by LEMAITRE and CHABOCHE. The proposed model was formulated by taking into account the influence of loading frequency on fatigue life. The parameters H and c are constants for frequency-independent materials, but functions of cyclic frequency for frequency-dependent materials. In addition, the expression of the model was discussed in detail at different stress ratios （R）. Fatigue test data of AlZnMgCu1.5 aluminium alloy and AMg6N alloy were used to verify the proposed model. The results showed that the model possesses a good ability of predicting fatigue life at different loading frequencies and stress ratios.

二维互穿配位聚合物[Co_3(2,6-nda)_3(4,4’bpy)_(1.5)]_n的合成和晶体结构

在中温水热反应条件下 ,以CoCl2 ·6H2 O、2 ,6 萘二羧酸 (2 ,6 pda)和 4 ,4’ bpy为原料 ,合成了一种二维互穿配位聚合物 [Co3 (2 ,6 nda) 3 (4 ,4’ bpy) 1.5]n 晶体 ,对其进行了元素分析、红外光谱表征、TGA GTA分析和X射线单晶衍射测定。该配位聚合物属单斜晶系 ,C2 /m空间群 ,晶胞参数为a =1.72 85 (11)nm ,b =1.996 5 (13)nm ,c=1.3994 (9)nm ,α =90° ,β=95 .82 2 (11)°,γ =90° ,V =4 .80 4 (5 )nm3 ,Z =4 ,dc=1.4 5 7g/cm3 ,μ =1.0 89mm-1,F(0 0 0 ) =2 136 ,R1=0 .0 5 94 ,wR2 =0 .16 0 5。结果显示形成一个二维互穿的网络结构。

Dynamic Responses of Super Rice IIyou602 Plants to Different Nitrogen Levels and Configuration Modes

[Objective] The paper was to study the dynamic responses of super rice Ilyou602 plants to different nitrogen levels and configuration modes. [Method] With super rice Ilyou602 as test material, the dynamic changes of total N content in functional leaves, leaf sheaths and stems under different, application amount of nitrogen and configuration modes were analyzed. [Result] The highest total N content of functional leaves under different N levels appeared in the different periods, which was the highest during rehydration period in A3 level. The total N content in various plant positions during full heading stage and maturity stage showed fertilization treatments 〉 CK, functional leaves 〉 leaf sheaths 〉 stems. The total N content in different plant positions showed obvious difference in different treatments. When the super rice Ilyou602 was planted in Chengdu plain, the proper application level of N and configuration mode was as follows： 165 kg/hm2, fertilizer： topdressing = 6：4. [Conclusion] The study provided theoretical basis for nitrogen regulation of high yield cultivation of super hybrid rice.

序批式MPR反应器处理低C/N城市污水运行方式优化研究

微压内循环生物反应器(Micro-Pressure Inner-Loop Bioreactor,MPR)是一种新型的污水处理工艺,在处理低C/N城市污水方面具有潜在优势。本实验考察了不同曝气量和进水方式下序批式MPR反应器对模拟城市污水处理效果,分析了污染物去除过程和污泥特性。研究结果表明,一次进方式下,在进水TN和TP浓度分别为79.52、4.1mg/L,进水C/N约为3.9的进水条件下,曝气量为7.5 L/h时,反应器TN和TP去除率分别达到70.26%和97.76%;采用二次进水方式后出水TN降至13.95 mg/L,TN的去除率提高至81.71%;两种进水方式下,反应器对COD和TP平均去除率保持在88.67%和95.03%。典型周期内污染物历时表明,和一次进水方式相比,分次进水优化了碳源分配,使更多碳源用于反硝化,系统内酸碱环境较一次进水更稳定,活性污泥浓度MLSS和污泥SOUR高于一次进水。

基于N-gram模型的多层融合气象灾害预警文本检验方法

气象灾害预警信息是直接对政府部门和公众进行发布的重要内容,是综合防灾减灾的第一道防线。为提升气象预警信息发布的质量,提出了气象预警文本质量检验模型。通过对全国气象历史预警信息内容进行特征分析,设计了适合气象预警信息特征的多模式融合分词方法,进而建立了预警专业语料库;研发了以归一化N-gram检验模型为主,以字序列组合检验模型为辅的多级检验模型。该模型已在国家突发事件预警信息发布系统中应用,辅助提高了人工预警审核效率,获得了较好的应用效果。

[C_4N_2H_(12)]_(1.5)[Zn_2(PO_4)(HPO_4)_2]·H_2O晶体的合成与表征

Using THF and water as solvent, piperazine as a template, a novel two dimensional layered zinc phosphate 1.5[Zn2(PO4)(HPO4)2]·H2O has been prepared solvothermally, and its structure is determined at 293K by Siemens Smart 1000 CCD diffractometer monoclinic, P21/c, a=0.81244(3)nm, b=2.61706(12)nm, c=0.83775(3)nm, β=110.981(2)°, V=1.66313(11)nm3, Z=4, R=0.0285, wR=0.0719. The structure con sists of vertex sharing ZnO4, HPO4, and PO4 tetrahedra, and double protonated organic cations, which results in formation of undulating 4 ring chains and 12 ring sheets. A network of hydrogen bonds involving both layer to layer and layer to amine interaction holds the phosphate layer together. CCDC: 200374.

退役士兵适用型人才“1+N”培养模式探索

培养“适职、适岗、适时”的适用型人才是退役士兵教育培训工作一直在探索的重要课题。建立学校、政府、行业、企业等多方参与的办学机制,确立掌握一种专项职业能力附加多项辅助能力的培养目标,设置一个主修专业方向附加多个选修模块的培训课程,实施线下面授与线上学习、理论学习与实习实训、一次主训与多次复训相结合的教学方式,可以推动退役士兵适用型人才培养,实现从单一追求就业率到高质量就业的转变。

A Field Study on Effects of Nitrogen Fertilization Modes on Nutrient Uptake,Crop Yield and Soil Biological Properties in Rice-Wheat Rotation System

Rational application of nitrogen （N） fertilizers is an important measure to raise N fertilizer recovery rate and reduce N loss.A two-year field experiment of rice-wheat rotation was employed to study the effects of N fertilization modes including a N fertilizer reduction and an organic manure replacement on crop yield,nutrient uptake,soil enzyme activity,and number of microbes as well as diversity of microbes.The result showed that 20% reduction of traditional N fertilizer dose of local farmers did not significantly change crop yield,N uptake,soil enzyme activity,and the number of microbes （bacteria,actinomycetes,and fungi）.On the basis of 20% reduction of N fertilizer,50% replacement of N fertilizer by organic manure increased the activity of sucrose,protease,urease,and phosphatase by 46-62,27-89,33-46,and 35-74%,respectively,and the number of microbes,i.e.,bacteria,actinomycetes,and fungi by 36-150,11-153,and 43-56%,respectively.Further,organic fertilizer replacement had a Shannon＇s diversity index （H） of 2.18,which was higher than that of other modes of single N fertilizer application.The results suggested that reducing N fertilizer by 20% and applying organic manure in the experimental areas could effectively lower the production costs and significantly improve soil fertility and biological properties.

Transition from fishbone mode toβ-induced Alfvén eigenmode on HL-2A tokamak

In the presence of energetic particles(EPs)from auxiliary heating and burning plasmas,fishbone instability and Alfvén modes can be excited and their transition can take place in certain overlapping regimes.Using the hybrid kinetic-magnetohydrodynamic model in the NIMROD code,we have identified such a transition between the fishbone instability and theβ-induced Alfvén eigenmode(BAE)for the NBI heated plasmas on HL-2 A.When the safety factor at magnetic axis is well below one,typical kink-fishbone transition occurs as the EP fraction increases.When q0 is raised to approaching one,the fishbone mode is replaced with BAE for sufficient amount of EPs.When q0 is slightly above one,the toroidicity-induced Alfvén eigenmode dominates at lower EP pressure,whereas BAE dominates at higher EP pressure.

Experimental study of double tearing mode on EAST tokamak

The double tearing mode(DTM)in a high βN(βN>1.5)discharge with internal transport barrier on EAST was investigated.A 15 kHz tearing mode(TM)(m≥3,n=3)appears at outer q=2 surface at first,which is stable in the highβN phase.Then a 2 kHz TM(m=2,n=1)occurs at inner q=2 surface.Soon after,high βN collapsed with the crash of ELM,and DTM formed during the collapse of βN.The positions of the two islands of the DTM are consistent with the q=2 surface.The temperature fluctuations are the strongest between the two magnetic islands.A statistical analysis of high βN discharges operating with the reversed magnetic shear configuration in the EAST 2015-2018 campaign revealed the existence of the DTM in many discharges.During the DTM phase,all βN are reduced by 10%-30% within 0.1 s.However,there are two different βN behaviors thereafter-with and without βN recovery.Studying the physical mechanism of βN recovery during the DTM phase will benefit steady-state operation with reversed shear configurations in the future.