Burden Distribution for Bell-Less Top With Two Parallel Hoppers

The circumferential burden distribution of bell-less top with two parallel hoppers was analyzed to obtain the expressions of burden flux and uneven ratio. The four-batch feeding spirally with two parallel hoppers was proposed to realize even burden distribution by uneven flux, ensuring reasonable distribution of BF gas and effective usage of heat energy and chemical energy of gas as well as stable BF production with higher quality and lower consumption.

Characteristics of BF Burden-flow at Material Gate of Bell-less Top

The influence of material gate position in bur- den-flow rate has been studied by simulating exper- iments.A mathematical model describing the char- acteristics of burden-flow at the material gate of bell-less top blast furnace(BF)is established in this paper,in an attempt to solve the problems in bur- den distribution,especially to eliminate the over- lapping or disconnection of the burden at the be- ginning and at the end of a ring,which plays a quite important role in the blast furnace operation.

Particle size segregation in hopper at a bell-less top blast furnace with parallel hoppers

Owing to a certain angle existing between a belt conveyor and the parallel hoppers,and the hoppers localizing away from the centerlines of a blast furnace,particles size segregation is likely to happen in a bell-less top blast furnace with parallel hoppers.Mastering the law of particles size segregation in hoppers could help to choose better charging parameters and optimize production and technical indices.As for the previous works on burden segregation at a bell-less top blast furnace with parallel hoppers,more attention was paid to the falling point segregation and the circumferential mass flow segregation while charging from the tilting chute,but ignoring the particle size segregation in burden hoppers as burden falls from a belt conveyor,which is the right basis of analyzing the former,and plays a significant role in controlling the gas distribution in the blast furnace.The present work takes ternary mixtures of coke in three different particle sizes to simulate the size segregation of the coke charged into the hoppers by experiments.The effect of the main striking point on size segregation is also investigated.The research shows that there exists a good linear relation between segregation coefficient k and the dimensionless main striking point when using the equation C = C_0~k to express the degree of size segregation in hoppers.The linear relation is proposed for the first time and provides a new way to predict the size segregation in hoppers,which forms a theoretical basis and technical support for reducing the size segregation degree in hoppers.

新型Bell实验法环境应力开裂测试装置

自主设计并搭建了自动刻痕装置和压弯装置,提高了刻痕质量和测试结果的可重复性,同时采用改进的Bell实验方法对高密度聚乙烯材料的环境应力开裂行为进行了系统实验研究。结果表明,试剂浓度、刻痕偏移量、刻痕倾斜角度、刻痕刀片厚度的改变均会对环境应力开裂时间产生较大的影响;裂纹起裂位置既不在试样弯曲变形最大的中间位置,也不在刻痕边缘,而是在距离刻痕边缘约6.38 mm的位置。

Janus-Helmholtz换能器与Janus-Hammer Bell换能器的振动模态研究

Janus-Helmholtz(JH)换能器和Janus-Hammer Bell(JHB)换能器外观结构类似,但两者振动模态不同。为明确二者振动模态的不同,分析了其结构参数对振动模态的影响。结果表明:在其他参数确定的条件下,JH换能器中圆环壳轴向长度L与圆环壳内侧半径a的关系应满足2<L/a<5.7,JHB换能器对应圆环壳长径比L/a的取值范围为0.1<L/a<0.3。利用有限元方法并设置特殊边界条件分析了JH换能器与JHB换能器谐振峰对应的振动模态,发现JH换能器中较低频振动模态为Janus纵振模态,高频振动模态为液腔谐振模态;JHB换能器中较低频振动模态为Janus纵振模态,较高频振动模态为圆环呼吸模态。进一步对比了JH换能器和JHB换能器的径向与轴向发送电压响应,发现JH换能器可以实现更宽的工作带宽和更高的发送电压响应;JHB换能器工作带宽较窄,但径向方向发射电压响应起伏较小。

记忆泡利信道下Bell态的几何失协

几何失协是度量量子关联的一种重要方法.通过引入记忆参数,使得泡利噪声具有记忆性,此时噪声被定义为记忆泡利噪声.依据不同记忆泡利信道的噪声参数,讨论xz退相位噪声、去极化噪声、双泡利噪声以及3种翻转噪声下Bell态的几何失协,得到Bell态的几何失协与噪声参数之间的关系,并且分析记忆参数对几何失协的影响.结果表明,在记忆泡利信道下Bell态的几何失协受到噪声影响的程度更小,即记忆泡利信道可有效增强噪声影响下Bell态几何失协的稳定性.这表明记忆泡利信道可以捕获更多的信息,有利于节约量子资源.

闽南义务教育阶段畲族女童的教育公平问题:基于bell hooks的批判课程视角

畲族是我国人口较少的少数民族之一,其整体受教育水平与我国倡导的教育目标仍有较大差距。具体表现为畲族女童在义务教育阶段长期面临不平等困境。鉴于此,分析闽南地区畲族女童的义务教育现状及其教育不平等问题。同时,以bell hooks的批判课程理论视角提出消除闽南地区畲族女童教育不平等问题的建议,即加大教育宣传以促进个体观念转变;重构校园课程以适应畲族发展需求;加强师资建设以增强批判教学意识。

The Behaviour of Vertical Bell Laboratories Layered Space-Time Algorithm Combined with Multiuser Detection Schemes in Wireless Communication System

This paper provides the performance analysis of multiuser Vertical Bell Laboratories Layered Space-Time (V-BLAST) system receiver structures for Multiple-input Multiple-Output (MIMO) channel at a base station with assumption of perfect channel estimation and perfect timing delay estimation. In MIMO channels the receivers such as decorrelator, Minimum Mean Square Error (MMSE) and Multistage Parallel Interference Cancellation (MPIC) receiver outperform the conventional receiver. Withal, since the multiple antenna interference led to a strong impact on the performance degradation of a multistage interference cancellation receiver, the performance of MPIC receiver was highly degraded based on system loading.

Multi-party semi-quantum private comparison protocol of size relation based on two-dimensional Bell states

Currently,all quantum private comparison protocols based on two-dimensional quantum states can only compare equality,via using high-dimensional quantum states that it is possible to compare the size relation in existing work.In addition,it is difficult to manipulate high-dimensional quantum states under the existing conditions of quantum information processing,leading to low practicality and engineering feasibility of protocols for comparing size relation.Considering this situation,we propose an innovative protocol.The proposed protocol can make size comparison by exploiting more manageable two-dimensional Bell states,which significantly enhances its feasibility with current quantum technologies.Simultaneously,the proposed protocol enables multiple participants to compare their privacies with the semi-quantum model.The communication process of the protocol is simulated on the IBM Quantum Experience platform to verify its effectiveness.Security analysis shows that the proposed protocol can withstand common attacks while preserving the privacies of all participants.Thus,the devised protocol may provide an important reference for implementation of quantum private size comparison protocols.

Why Bell’s EPRBA Experiment Is Meaningless

We demonstrate that a Bell type of experiment asks the impossible of a Kolmogorovian correlation. An Einstein locality explanation in Bell’s format is therefore excluded beforehand by way of the experimental and statistical method followed.

Fermions: Spin, Hidden Variables, Violation of Bell’s Inequality and Quantum Entanglement

Using real fields instead of complex ones, it was recently claimed, that all fermions are made of pairs of coupled fields (strings) with an internal tension related to mutual attraction forces, related to Planck’s constant. Quantum mechanics is described with real fields and real operators. Schrodinger and Dirac equations then are solved. The solution to Dirac equation gives four, real, 2-vectors solutions ψ1=(U1D1)ψ2=(U2D2)ψ3=(U3D3)ψ4=(U4D4)where (ψ1,ψ4) are coupled via linear combinations to yield spin-up and spin-down fermions. Likewise, (ψ2,ψ3) are coupled via linear combinations to represent spin-up and spin-down anti-fermions. For an incoming entangled pair of fermions, the combined solution is Ψin=c1ψ1+c4ψ4where c1and c4are some hidden variables. By applying a magnetic field in +Z and +x the theoretical results of a triple Stern-Gerlach experiment are predicted correctly. Then, by repeating Bell’s and Mermin Gedanken experiment with three magnetic filters σθ, at three different inclination angles θ, the violation of Bell’s inequality is proven. It is shown that all fermions are in a mixed state of spins and the ratio between spin-up to spin-down depends on the hidden variables.

情志护理联合中医外治三联疗法治疗Bell面瘫的临床疗效观察

目的:探讨情志护理联合中医外治三联疗法治疗贝尔(Bell)面瘫的临床疗效。方法:选取2021年6月—2022年12月于高安市中医院就诊住院并签署知情同意书的60例Bell面瘫患者,随机将其分为研究组(n=30)和对照组(n=30)。对照组患者采用中医外治三联疗法联合常规护理,研究组患者采用中医外治三联疗法联合情志护理。并采用汉密尔顿焦虑量表及Sunnybrook面神经功能评估患者治疗前后的效果。结果:研究组临床总有效率高于对照组(P<0.05)。干预后,研究组面神经功能评分高于对照组,焦虑评分低于对照组(P均<0.05)。结论:情志护理联合中医外治三联疗法治疗Bell面瘫可有效改善患者焦虑情况,提高临床疗效。

基于Bell态粒子和单光子混合的量子安全直接通信方案

为了提高量子安全直接通信的效率,本文提出了一种基于Bell态粒子和单光子混合的量子安全直接通信方案.该方案中Alice将所有Bell态粒子划分为两个序列S_A和S_B,先将S_B发给Bob进行第一次窃听检测,检测结果表示量子信道安全后再将信息序列编码在序列S_A和单光子序列S_S混合的量子态序列上;然后将已编码序列经过顺序重排和添加单光子检测粒子后发给合法接收方Bob.该方案避免了复杂的U变换,简化了方案的实现过程.同时顺序重排和检测粒子的结合保证了方案的安全性.另外3 bits经典信息加载在一个态上的编码规则大大提高了编码容量,从而使信息传输效率也得到提高.

针灸治疗Bell's面瘫疗效的系统评价

目的 系统评价针灸促进Bell s面瘫康复和减少其远期发病率的效果。方法 计算机检索MED LINE、EMBASE、LILAS、中国生物医学文献数据库和Cochrane肌肉疾病组注册组资料库 ,检索时间截止至 2 0 0 2年 12月 ;同时检索其它相关灰色文献 ,获取所有涉及针灸治疗Bell s面瘫的随机和半随机对照试验。而后选择符合纳入标准的临床试验 ,评价其方法学质量 ,并从中提取患者基本情况、干预措施、终点指标和结果等相关资料进行系统评价。结果 共有 3个小规模的临床随机对照试验 ,合计 2 88例患者符合纳入标准 ,但因其在试验设计、报道上存在明显缺陷 ,以及试验之间存在较大差异 ,不符合Meta分析条件 ,因而只进行了定性分析。结果显示 ,针灸治疗Bell s面瘫有一定疗效 (P均 <0.0 1)。结论 针灸治疗Bell s面瘫有效 ,但入选的 3个随机对照试验规模小 ,质量不高 ,降低了这一结论的可靠性。开展高质量、内在真实性好的相关随机对照试验非常必要。

轻中度单侧Bell面瘫红外热辐射强度异常分析

Bell面瘫是一种多发的面神经疾病,首次发病以轻中度居多。应用红外热成像原理,探寻一种客观无创的Bell面瘫评估方法。人体面部穴位大都呈左右对称分布,取患者病变一侧的相关穴位为实验组,另一侧同一穴位为对照组,分别研究其红外热辐射特性,急性期内,同一穴位在健侧与患侧的红外热辐射强度差异显著,即存在明显的温差(大于0.3℃)。在红外热像上,患侧的穴位与其周边组织形成一个不规则的辐射异常区,伪彩色化后的色彩与健侧对比鲜明。同时,病变程度越重,同一穴位两侧的温差越大。其中颧髎、地仓、颊车、鱼腰、阳白五个穴位的双侧温差与面瘫的病变程度正相关,分别为0.676,0.498,0.506,0.545,0.518,P<0.05,有统计学意义。由此可见,红外热像可以用于客观评估Bell面瘫的病变程度。

七叶皂苷钠、强的松治疗Bell麻痹的随机对照研究

目的 探讨七叶皂苷钠治疗Bell麻痹的有效性。方法 采用随机对照研究 ,收集首次诊断Bell麻痹的急性期患者 85例 ,随机分为七叶皂苷钠组 (七叶皂苷钠加基础治疗 ) 30例、强的松组 (强的松加基础治疗 ) 2 8例、基础治疗组 2 7例 ,基础治疗包括多种维生素、针灸、理疗等 ,均在发病 3天内给予相应的治疗。采用House Brach mann(H B)面神经麻痹评定标准 ,分别于治疗前与治疗后 1个月时评定面神经麻痹等级。结果 治疗前 3组患者性别、年龄、面瘫部位、发病至开始治疗时间、首次治疗时H B面瘫等级分布均无统计学差异 ,具有可比性。治疗后 1个月时三组患者H B面瘫等级经Kruskal Wallis秩和检验 ,有统计学差异 (P =0 0 4 8)。 3组间两两比较显示七叶皂苷钠组、强的松组面瘫恢复均优于基础治疗组 ,有统计学意义 (P值分别为 0 0 4 5、0 0 14 ) ;而七叶皂苷钠组与强的松组面瘫恢复比较无统计学差异 (P =0 6 16 )。结论 七叶皂苷钠可替代皮质类固醇治疗Bell麻痹 ,同时避免皮质类固醇的副作用。

基于Bell态与Two-qutrit态无信息泄漏的量子对话协议

基于Einistein-Podolsky-Rosen纠缠对与量子安全直接通信(QSDC),提出了一个新的基于Bell态的量子对话协议。通信双方Alice和Bob只需要进行一次通信即可实现双方之间秘密的同时交换。该方案利用一个随机比特串和检测光子来实现安全性,能够抵抗截获/重放攻击、特洛伊木马攻击和纠缠攻击等典型攻击。很多近期提出的协议中存在严重的信息泄漏,也就是说任何窃听者都可以从合法通信者的公开声明中提取到部分秘密信息,我们的方案很好地克服了这一问题。协议的效率较高,可以达到66.7%,同时由于纠缠态粒子只需要进行一次传输,该方案更简单易行。将该协议推广到two-qutrit态,其安全性仍能得到保证。

Bell麻痹治疗效果的影响因素分析

目的:探讨康复治疗Bell麻痹治疗效果的影响因素。方法:Bell麻痹患者96例,综合脉冲短波、高压电位、针灸和运动治疗。康复治疗前后用面部分级系统(facialgradingsystem,FGS)进行评分,并随访远期效果。分析影响住院和门诊患者痊愈和遗留后遗症的因素。结果:96例患者中随访到72例(75.00%)。61例痊愈,占84.72%;11例有后遗症,占14.28%。痊愈患者除康复治疗前和治疗后FGS评分高于有后遗症患者(P<0.05—0.01),在病程的第1周内开始康复治疗,明显早于有后遗症患者(P<0.01)。门诊和住院患者在获得同等治疗效果的条件下,门诊患者治疗周期平均13.96±8.02天,较住院患者缩短5天,差异有非常显著性意义(P<0.01)。门诊患者在病程的第1周内开始康复治疗,明显早于住院患者(P<0.05)。结论:早期综合康复治疗能缩短Bell麻痹病程和提高治愈率,在病程第1周内及时选择合理的康复治疗是取得良好预后的关键所在。

基于六粒子纠缠态和Bell态测量的量子信息分离(英文)

通过介绍六粒子纠缠态的新应用研究,提出了一个二粒子任意态的信息分离方案.在这个方案中,发送者Alice、控制者Charlie和接受者Bob共享一个六粒子纠缠态,发送者先执行两次Bell基测量;然后控制者执行一次Bell基测量;最后接受者根据发送者和控制者的测量结果,对自己拥有的粒子做适当的幺正变换,从而能够重建要发送的二粒子任意态.这个信息分离方案是决定性的,即成功概率为100%.与使用相同的量子信道进行二粒子任意态的信息分离方案相比,本文提出的方案只需要进行Bell基测量而不需要执行多粒子的联合测量,从而使得这个方案更简单、更容易,并且在目前的实验室技术条件下是能够实现的.

利用非Bell基测量实现三粒子W态的隐形传送

研究非Bell基测量的未知三粒子W态的隐形传态方案。先利用原子和腔场的共振相互作用制备未知三原子W态。接着,利用两原子同时在强经典驱动场驱动下和单模腔场发生相互作用,产生态的演化,来制备EPR对量子信道。最后利用和制备量子信道同样的方法来实现未知三原子W态的隐形传送。在传送过程中,可忽略腔场热作用和腔延迟作用的影响。传送成功的总几率为1。