Raising medium function of environmental engineering by using life rubbish to produce carpet turf

Abundant material with low cost was utilized to raise medium function of producing carpet turf by life rubbish. The results showed that the material used could strikingly raise water retentiveness and ventilating of medium. Through the determination of the effect of each growth index of several turfgrass, emergence density, plant height, root growth and individual plant′s net primary production were all positively related to the material′s amount mixed, showing that the mixture of material could promote turfgrass growth, further proving that the material used raised medium function of producing carpet turf by life rubbish and made most use of life rubbish resources. It provided a scientific base is for application of environmental engineering by using life rubbish to produce carpet turf. So the study had both important theoretic meaning and applied value.

Solutions of Green's function for Lamb's problem of a two-phase saturated medium

The solutions of Green’s function are significant for simplification of problem on a two-phase saturated medium.Using transformation of axisymmetric cylindrical coordinate and Sommerfeld’s integral,superposition of the influence field on a free surface,authors obtained the solutions of a two-phase saturated medium subjected to a concentrated force on the semi-space.

GREEN FUNCTION ON TWO-PHASE SATURATED MEDIUM BY CONCENTRATED FORCE IN TWO-DIMENSIONAL DISPLACEMENT FIELD

The Green function on two-phase saturated medium by concentrated force has a broad and important use In seismology, seismic engineering, soil mechanics, geophysics, dynamic foundation theory and so on. According to the Green function on two-phase saturated medium by concentrated force in three-dimentional displacement field obtained by Ding Bo-yang et al., it gives out the Green function in two-dimensional displacement field by infinite integral method along x(3)-direction derived by De Hoop and Manolis. The method adopted in the thesis is simpler. The result will be simplified to the boundary element method of dynamic problem.

Solution of a Green's function for a saturated porous medium in a half-space subjected to a torsional force

Based on the solutions of the Green＇s function for a saturated porous medium obtained by the authors, and using transformation of axisymmetric coordinates, Sommerfeld integrals and superposition of the influence field on a free surface, the authors have obtained displacement solutions of a saturated porous medium subjected to a torsional force in a half-space. The relationship curves of the displacement solutions and various parameters （permeability, frequency, etc.） under action of a unit of torque are also given in this paper. The results are consistent with previous Reissner＇s solutions, where a two-phase medium decays to a single-phase medium. The solution is useful in solving relevant dynamic problems of a two- phase saturated medium in engineering.

低温/中温花生粕蛋白的理化特性及结构特性分析

对低温/中温花生粕的感官色差、功能特性和结构特性进行了研究和分析,旨在为提高花生粕的综合利用价值提供理论基础。结果表明,低温花生粕呈象牙色,中温花生粕呈灰白色。从功能特性上来看,低温/中温花生粕蛋白的持油性、乳化性和泡沫稳定性无显著性差异。低温花生粕蛋白具有更好的溶解度、起泡性、持水性、热稳定性,中温花生粕蛋白具有更好的乳化稳定性。进一步通过分子量、二级结构、DSC对蛋白质结构进行分析,低温花生粕和中温花生粕蛋白质二级结构主要是β-折叠、β-转角,中温花生粕蛋白变性程度更高,低温花生粕的蛋白结构相对更松散。低温花生粕蛋白具有更高的变性温度和热焓值,且具有更好的热稳定性。

刑法谦抑性的系统论考察

刑法谦抑原则建立在法律对政治权力的有效抑制的理论基础以及刑法系统功能分出的社会基础上。刑法谦抑成为刑法系统自我指涉与外部指涉的沟通语义结构,为国家暴力的正当化使用提供必要条件。刑法谦抑的“话语—制度”构建,推动了政治系统与刑法系统结构上的耦合机制。暴力适用的合法化(政治权力运作)与个体权利保护(刑法规范运作)并不矛盾,权利与权力具有共生特点。面对当代社会中系统与系统性危害的不断涌现,刑法的适用范围有所扩张,且这种扩张具有正当性。不能将刑法谦抑原则仅仅限定为刑法系统对政治权力决策的外部指涉。借助社会沟通的无主体属性,将刑法谦抑理论视为识别社会诸领域危害的语义结构,这与传统行为主义刑法观下的规范理论具有显著区别。这种路径并不意味着放弃行为概念,而是用功能主义去改造刑法谦抑原则的实质内涵,推动个体权利体系的更新,创造系统沟通连接新的可能性。

稀缺主焦煤高效重介分选工艺在吕家坨矿选煤厂的应用

针对吕家坨矿选煤厂原生产工艺存在的问题,分析了入选原煤煤质特性,采用超宽粒级原煤三产品重介质旋流器选煤工艺、新型煤泥重介质旋流器选煤技术-反分流分选工艺、粗精煤泥两段弧形筛组合脱泥回收技术进行技术改造。改造后工艺系统指标检测结果表明,改造可提高综合精煤产率1.78%,增加税前利润10573.2万元。

既有中小型酒店更新改造设计研究——以济南东源大厦为例

随着经济增长与社会发展,城市更新的需求不断加强,既有酒店建筑作为城市的重要构成,其更新改造随之提上日程。酒店建筑的改造涉及的学科范围广泛,门类众多,其改造设计策略仍待于实践中持续探索。文章选择了济南市东源大厦改造更新的实践案例,从院落环境升级,外部形态更新,内部功能改造等方面分析,对现有中小型酒店建筑更新改造的设计方法进行探索,提出场地景观重新规划、对立面入口更新、优化交通流线、公共空间重组、房型升级的具体改造方法,使其融入城市环境,满足使用需求,为更多此类工程提供一个思路与借鉴。

不同轻型基质对杉木容器苗生长与养分积累的影响

为筛选出适合杉木优良无性系洋-061容器苗生长的轻型基质配方。采用单纯形-重心混料试验设计,以泥炭土、珍珠岩、杉木皮和稻谷壳为材料,并以黄心土为对照(CK),研究不同轻型基质配比对杉木生长、根系形态和养分积累的影响。结果表明,1)不同轻基质配方(T1-T14)和对照(CK)处理的苗高、地径和生物量均表现出相同的生长规律,即随时间增加而逐渐增大。2)当苗木培育360 d时,不同轻型基质处理苗高、地径和苗木质量指数均高于CK,其中,苗高在T6处理最大,较CK增加了54.89%,地径和苗木质量指数在T6和T1处理时达到最大,分别较CK提高33.04%和48.65%,T14处理下生物量最大;3)不同轻型基质处理有效促进了杉木幼苗根系的发育,而且其总根长、根表面积、根直径及根体积分别在T2、T14、T9和T14处理时达到最大;4)杉木植株养分含量对不同轻型基质响应存在差异,其中轻型基质T5、T3和T12处理显著促进植株氮的积累,轻型基质T8、T3和T13处理苗木全磷含量显著高于其他处理,而T8、T9和T2植株全钾含量显著高于其他处理;5)利用隶属函数对幼苗生长指标进行综合分析,综合评价排名前3的依次是T14(20%泥炭土+27%珍珠岩+27%杉木皮+26%稻谷壳)、T5处理(60%泥炭土+40%珍珠岩)和T1处理(100%泥炭土)。考虑到泥炭土成本较高,因此,T5和T14处理为本研究中适合于杉木洋-061容器苗生长的轻型基质配方。

“深刺纳阳”针法联合中频电脑治疗仪治疗卒中后患者吞咽障碍疗效观察

目的:观察“深刺纳阳”针法联合中频电脑治疗仪治疗卒中后吞咽障碍的疗效。方法:选取143例卒中后吞咽障碍患者,随机数字表法分为对照组(n=71)和观察组(n=72),对照组给予中频电脑治疗仪治疗,观察组给予“深刺纳阳”针法联合中频电脑治疗仪治疗,两组疗程均为4周,对比两组临床疗效、中医症候积分、吞咽功能、美国国立卫生研究院卒中量表(NIHSS)评分、运动功能(Fugl-Meyer)评分和不良反应情况。结果:观察组治疗总有效率高于对照组(P<0.05)。治疗后4周,两组中医症候积分和洼田饮水试验(WST)评分、NIHSS评分均降低,吞咽功能评估量表(GUSS)评分、Fugl-Meyer评分升高(均P<0.05),且观察组中医症候积分和WST、NIHSS评分低于对照组,GUSS、Fugl-Meyer评分高于对照组(均P<0.05)。两组不良反应发生率比较差异无统计学意义(P>0.05)。结论:“深刺纳阳”针法联合中频电脑治疗仪治疗卒中后吞咽障碍的疗效显著,可促进吞咽、神经及运动功能恢复,且安全性较高。

临沂和周口地区中高温大曲细菌群落结构与基因功能差异性研究

为明确山东临沂和河南周口地区中高温大曲细菌群落结构及菌群基因功能的差异,本研究采用MiSeq高通量测序技术对2个地区中高温大曲的细菌群落结构进行了解析,并基于直系同源蛋白数据库(clusters of orthologous groups of proteins,COG)分析了其细菌类群潜在的功能。α多样性发现,两者在丰富度和多样性上差异均不显著(P>0.05)。相较于周口地区大曲,在门水平上,临沂地区大曲中放线菌门(Actinobacteria)和拟杆菌门(Bacteroidetes)平均相对丰度均显著偏低(P<0.05),在属水平上,不动杆菌属(Acinetobacter)平均相对丰度显著偏高(P<0.05),地杆菌属(Geobacter)和泛菌属(Pantoea)平均相对丰度均显著偏低(P<0.05)。LEfSe(linear discriminant analysis effect size)分析发现,Geobacter为周口地区大曲中的生物标志物,而临沂地区大曲中的生物标志物未在属水平体现;β多样性发现,两者在整体上存在明显差异;PICRUSt(phylogenetic investigation of communities by reconstruction of unobserved states)分析发现,临沂地区中高温大曲在转录、氨基酸和核苷转运与代谢功能上显著高于周口地区大曲(P<0.05)。由此可见,2个地区中高温大曲的细菌群落结构及菌群基因功能表达均存在明显差异。

急诊绿色通道下溶栓治疗在轻中型急性缺血性脑卒中患者中的应用效果及对其神经功能的影响

目的探究急诊绿色通道下溶栓治疗在轻中型急性缺血性脑卒中患者中的应用效果及对其神经功能的影响。方法选取2020年1月至2022年3月抚州市第一人民医院收治的72例轻中型急性缺血性脑卒中患者作为研究对象,根据其就诊时医院是否开通优质绿色通道分为对照组与观察组,每组36例。对照组实施传统急诊路色通道下溶栓治疗,观察组实施优质急诊绿色通道下溶栓治疗。比较两组救治时间、神经功能、脑出血转化率、死亡率及救治满意度。结果观察组完成CT扫描时间、就诊至会诊完成时间、急诊至静脉溶栓时间(DNT)均短于对照组,差异有统计学意义(P<0.05);救治后,两组美国国立卫生研究院卒中量表(NIHSS)评分均低于救治前,且观察组低于对照组,差异有统计学意义(P<0.05);两组脑出血转化率、死亡率比较差异无统计学意义。观察组救治满意度为94.44%,高于对照组的77.78%,差异有统计学意义(P<0.05)。结论实施优质急诊绿色通道下溶栓治疗轻中型急性缺血性脑卒中患者效果显著,可改善患者神经功能,提高救治满意度,值得临床推广应用。

岩土复合地层双孔隧道开挖对地表沉降的影响

为研究岩土复合地层中双孔平行隧道开挖对地表沉降的影响,提出一种基于复变函数理论和随机介质理论相结合的计算方法,讨论不同隧道开挖半径、隧道间距以及土层主要影响角对地表沉降的影响。结果表明,相较于不分层理论,考虑岩土分层的计算结果与有限元结果更加吻合;随着隧道开挖半径的增大,地表沉降随之增大;随着隧道间距的增大,地表最大沉降值随之减小,沉降曲线形态发生变化;随着土层主要影响角的增大,地表最大沉降值随之增大,地表沉降槽宽度变小。

威伐光联合调制中频电疗治疗肩袖损伤的临床疗效

目的观察威伐光联合调制中频电疗治疗肩袖损伤的临床疗效。方法选取南京大学医学院附属金陵医院(东部战区总医院)2022年1月至2023年5月肩袖损伤患者50例,以随机数字表将其分为对照组和观察组,每组25例,对照组给予威伐光照射治疗,观察组给予威伐光照射联合调制中频电疗治疗。比较两组治疗前后视觉模拟评分量表(VAS)评分和Constant-Murley肩关节功能评分量表(CMS)评分变化。结果两组患者治疗后VAS评分降低,且与对照组(3.56±0.96)分相比,观察组VAS评分(2.96±0.73)分较低,差异有统计学意义(P<0.05);治疗后较治疗前两组CMS评分升高,且观察组CMS评分(78.80±8.36)分较对照组(71.60±7.18)分更高,差异有高度统计学意义(P<0.01)。结论威伐光联合调制中频电疗能够显著缓解肩袖损伤患者的肩痛症状,改善肩关节功能。

Modeling of Rocks with Spatial Distributed Fractures by Random Medium Theory

By using the spectrum expanding theory of random processes and Hudson's crack model,we developed a random medium model for rocks with spatial random distributed number density of cracks. This model could connect the micro-parameters of the cracks with the macro- mechanical properties, and can be effectively applied to model the real inhomogeneous medium. Numerical example indicates that the random distribution characters could be different for different elastic constants under the same random distribution of number density of cracks. By changing the value of the autocorrelation length pair, it is possible to model the difference of the distribution in the two coordinate directions. Numerical modeling results for seismic wave propagating in rocks with random distributed fractures using a staggered high-order finite-difference (SHOFD) are also presented.

核心肌群渐进式训练联合中频理疗在老年膝骨关节炎患者中的应用效果

目的:观察核心肌群渐进式训练联合中频理疗在老年膝骨关节炎患者中的应用效果。方法:选取2021年3月至2023年2月该院收治的90例膝骨关节炎患者进行前瞻性研究,按随机数字表法将其分为对照组(n=45)与观察组(n=45)。对照组予以中频理疗,观察组在对照组基础上联合核心肌群渐进式训练。比较两组干预前后疼痛程度[视觉模拟评分法(VAS)]评分、膝关节功能[Lysholm膝关节功能、美国特种外科医院(HSS)]评分和股四头肌肌力[股四头肌表面积分肌电值(iEMG)、中位频率(MF)]水平。结果:干预4、8周后,两组VAS评分均低于干预前,且观察组低于对照组,差异有统计学意义(P<0.05);两组Lysholm、HSS评分均高于干预前,且观察组高于对照组,差异有统计学意义(P<0.05);两组股四头肌iEMG、MF水平均高于干预前,且观察组高于对照组,差异有统计学意义(P<0.05)。结论:核心肌群渐进式训练联合中频理疗应用于老年膝骨关节炎患者可提高膝关节功能评分和股四头肌肌力水平,降低疼痛程度评分,其效果优于单纯中频理疗。

GENERALIZED RAY APPROXIMATE METHOD TO INVERSE MEDIUM PARAMETERS

In this paper, the inverse problem of the medium parameters in an inhomogeneous medium is studied and a generalized ray approximate form of the total wave field is described. First, the acoustic wave equation derived from the elastic wave equation is studied, the referential variables and perturbational variables are introduced, and the integral equation of the medium perturbational parameters is obtained. Then from the point of view of the local principles of the wave function in an inhomogeneous medium, a generalized ray approximate form of the total wave field in an inhomogeneous medium is described, and attention is focused on the Fredholm integral equation of the first kind. Finally, the medium parameters in half-plane are inversed. Numerical examples show when the perturbations of the medium parameters are about 0.5, this method can effectively inverse its variation. Apparently, this method is better than the conventional Born weak scattering approximation.

Green's function of multi-layered poroelastic half-space for models of ground vibration due to railway traffic

This study proposes a Green＇s function, an essential representation of water-saturated ground under moving excitation, to simulate ground borne vibration from trains. First, general solutions to the governing equations of poroelastic medium are derived by means of integral transform. Secondly, the transmission and reflection matrix approach is used to formulate the relationship between displacement and stress of the stratified ground, which results in the matrix of the Green＇s function. Then the Green＇s function is combined into a train-track-ground model, and is verified by typical examples and a field test. Additional simulations show that the computed ground vibration attenuates faster in the immediate vicinity of the track than in the surrounding area. The wavelength of wheel-rail unevenness has a notable effect on computed displacement and pore pressure. The variation of vibration intensity with the depth of ground is significantly influenced by the layering of the strata soil. When the train speed is equal to the velocity of the Rayleigh wave, the Mach cone appears in the simulated wave field. The proposed Green＇s function is an appropriate representation for a layered ground with shallow ground water table, and will be helpful to understand the dynamic responses of the ground to complicated moving excitation.

基于改进蚁群算法的中压配电网络规划方法研究

研究基于改进蚁群算法的中压配电网络规划方法,设计合理的中压配电网络规划方案,降低中压配电网络的费用。构建以负荷要求、潮流限制为约束条件,投资和运行费用最低为目标函数的中压配电网络规划数学模型。通过变换状态转移准则改进蚁群算法,以数学模型为基础采用改进蚁群算法规划中压配电网络方案。实验表明该方法能使中压配电网络的负荷处于合理范围内,降低投资与运行费用。

基于Weibull分布的不同冻融介质下再生骨料透水混凝土耐久性能研究

为探究不同环境下再生骨料透水混凝土(RPC)耐久性变化规律,以3种再生骨料替代率(0、30%、50%)和4种冻融介质(H 2O、3.5%NaCl、5%Na_(2)SO_(4)、3.5%NaCl+5%Na_(2)SO_(4))为变量进行冻融试验。定期测定RPC质量损失率和相对抗压强度损失率,对RPC取样并进行扫描电镜(SEM)分析,以冻融试验下RPC相对抗压强度损失率为依据,利用Weibull函数对RPC进行寿命预测。结果表明,同一环境下,RPC质量损失率和相对抗压强度损失率随着再生骨料替代率的增加而增加;同一再生骨料替代率下,3.5%NaCl、5%Na_(2)SO_(4)、3.5%NaCl+5%Na_(2)SO_(4)均加速RPC冻融破坏,3.5%NaCl+5%Na_(2)SO_(4)对RPC质量损失率和相对抗压强度损失率影响最严重。由SEM分析可知RPC内部孔隙和侵蚀产物数量均因循环次数和冻融介质的变化呈现明显的差异性,NaCl和Na_(2)SO_(4)对RPC侵蚀破坏起着相互促进的作用。由寿命预测结果可知,H 2O中RPC-0可靠度退化持续时间最长,即预测寿命最长,为4675 h左右,3.5%NaCl+5%Na_(2)SO_(4)溶液中RPC-50可靠度退化持续啥时间最短,为2200 h左右,表明NaCl和Na_(2)SO_(4)对RPC侵蚀作用较为严重。