江西南昌西汉海昏侯刘贺墓出土玉器

江西南昌西汉海昏侯刘贺墓（M1）出土玉器[1]约400件（套）,包括约40种器形。全部玉器分散存放在墓室的不同区域（墓室平面图参见本期第5页图一）,表现为不同区域器形有别,具有不同的功能属性。据此特点,本文按出土玉器的不同区域划分,共甄选出具有代表性的38件玉器介绍如下。一西藏椁（一）娱乐用器库共出土玉器13件,其中舞人玉佩、双龙首国家社科基金重大委托项目“海昏侯墓考古发掘与历史文化资料整理研究”(项目编号:16@ZH022)子课题“海昏侯墓出土文物研究”成果之

Study on selective recognition of Hg--(2+) by N-(2-hydroxy-1-naphtalamido)-N'-phenyl-thiourea

设计合成了用于识别汞离子的ICT荧光传感分子n-(2-羟基-1-萘甲酰胺基)-n’-苯基硫脲(1),通过红外光谱、核磁共振谱和质谱表征了其结构。利用其荧光性质研究了该物质对几种重金属离子的识别性质,初步探讨了其结合模式。实验表明:在50%水-乙腈介质中主体分子1表现出对Hg2+良好的选择性,其结合比为1∶2。A novel fluorophore,N-(2-hydroxy-1-naphtalamido)-N'-phenyl-thiourea was synthesized and the structure were characterized by IR,1H NMR and ESI-MS.It showed fluorescence in acetonitrile in the presence of some transition metal ions,the highest sensitivity was observed with Hg2+.It was also found that the receptor 1 show sensitive and selective response toward Hg2+ in water-acetonitrile(50/50,v/v).Preliminary investigations were carried out to understand the selective signaling mechanism for Hg2+,which was shown to form a 2∶1 complex with the ligand.国家自然科学基金项目(20675069

Study on Synthesis and Anion Recognition of N-(Orthohydroxynaphthamido)-N′-Phenylthioureas

设计合成了3种n-邻羟基萘甲酰胺基-n′-苯基硫脲类化合物,通过核磁共振谱和质谱表征了其结构。应用吸收光谱和荧光光谱考察了在乙腈中其与f-、CH3CO2-、H2PO4-、HSO4-、Cl-和br-等阴离子的相互作用。结果表明,该类主体分子与阴离子形成结合比为1∶1氢键配合物,通过改变萘环上酰基和羟基的相邻位置可调控识别作用的选择性,它们与阴离子作用分别在355、367nM和372nM出现最大吸收峰,荧光光谱显示它们对f-有突出的响应灵敏度,可选择性识别f-。The N-(orthohydroxynaphthamido)-N′-phenylthioureas were designed and synthesized and their structure were characterized by 1HNMR and ESI-MS.Their interaction with anions such as F-、CH3CO-2、H2PO-4、HSO-4、Cl-and Br-in acetonitrile were investigated by absorption and fluorescence spectra.The hydrogen bonding of 1∶1 complexes were formed between receptors and anions.The selectivity of receptors to anion could be efficiently tuned by altering substituent site of acyl and hydroxyl at N-naphtyl moiety.The receptors interaction with anions induced maximal new peaks at 355nm,367nm and 372nm in the absorption spectra,respectively.The F-induced enhancement of the receptors could be applied as selective fluorescent sensors for fluoride

The Enhancement of SIMPLE Method

本文针对SIMPlE系列算法中的弊端，提出了一种新的计算压力场的算法———SIMPlEHl算法，且将这种算法应用到液压阀阀腔的数值解中，发现SIMPlEHl算法具有计算精度高，收敛速度快等优点In the light of deFects of SIMPLE series methods, a new SIMPLEHL method For solving the pressure profile is put Forward.It has been Found that the SIMPLEHL method has an advantage of high computation precision and acceleration convergence, etc., when the SIMPLEHL method was used in the digital simulation of the hydraulic valve chamber

A Study of the Flow Field Distribution of Hydraulic Integrated Block by Using LDA and K-ε Model

液压元件集成化后，从流场分布的机理研究液压阀的节能显特别重要。通常情况下，液压阀流道的公称直径（6MM~20MM）比较小，故采用传统的测量仪器不可能测量出流场的分布.本文利用激光多谱勒测速仪（ldA）成功地解决了这个问题；另一方面，传统的研究方法只能研究总的能量损失，要从流场分布的机理研究流道内的能量损失，也是非常困难的.作者利用本文的k-ε紊流模型成功地解决了这个问题.从实验数据和数值模拟两个方面提出了优化流道的设计方案。在计算复杂流场时，作者提出了一种对复杂流场计算收敛性非常有效的线性分割迭加法（lSA）。It is very important to study the energy saving From the mechanism of the Flow Fields of the distribution,when the hydraulic components are integrated.In the ordinary condition, a conventional measurement equipments are not able to measure the FlowField's distribution,because the nominal diameters(6 mm～20 mm)of the Flow pathof hydraulic components are very small.The authors have successFully solved the problem by using Laser Doppler Anemometry(LDA).On the other hand,it is very diFFicultto analyse theoretically it,the conventional method is only capable of studying the total ensrgy loss,alld can not analyse the Flow Fields distribution.Also it is reay diFFicult to study the Flow Field'S distribution mechanism of the Flow path.The authors have alsosuccessFully solved the problem by using K--E turbulence'model.Finally an optimal design project of the Flow path is proposed by the experimental data and theoretical analysis.In the paper,the authors have achieved a good method to simulate the complex FlowFields which is called' Linear-Separation-Accumulation(L method

Study on the Hybrid Formal DiFFerence Method

本文主要研究了高阶差分和低阶差分的不足，从而提出了一种新型的混合差分法，这种方法比高低阶差分都优越In the light of deFects of the high order diFFerence and low order diFFerence,a new type of hybrid diFFerence method is put Forward in this paper.The method has advantage over the high order diFFerence method and low order diFFerence method

Swarm of AUVs fission control algorithm combining topological interaction and information coupling degree

在无协商、指派及中心控制的自主水下航行器(AUV)集群控制中,AUV群集在进行避碰、多目标追踪等行为时群集分裂的现象不可避免,如果分裂不可控,易出现AUV丢失或分裂后的子群规模差距过大等问题。为了面对外部刺激时群集能进行可控分群,提出一种融合拓扑交互和信息耦合度的分群控制算法,该算法使用信息耦合度作为评判指标衡量个体间的影响作用,并根据AUV在水下通信难、感知难的特点,引入了拓扑交互机制,减少群集组群和分群所需要的信息,提升AUV组群和分群的效果。仿真实验验证该算法的可行性和有效性。</p

Underwater Image Reflection Removal Based on Smoothed Region Filling

为了有效去除水下图像倒影,而不影响水下图像细节信息完备性,研究一种基于平滑化区域填充的水下图像倒影去除方法。通过Lab颜色模型和K-means聚类识别水下图像倒影区域,计算含倒影水下图像各个像素RGB颜色分量的最小值,并导进和含倒影水下图像的灰度图中,实现图像增强处理,在需填充区域中心设置一个符合平滑填充条件的窗口尺寸,基于平滑化区域填充去除倒影,保证倒影区域去除后,图像细节信息不出现严重缺失。研究结果显示,某水下图像倒影区域去除后,水下图像有价值细节与原图有价值细节相似度较高,信息量完备性显著,不存在颜色失真情况,图像细节信息较完备。</p

匹配滤波在相干光纤通信系统中的特性研究

针对相干光纤通信系统中匹配滤波（如根升余弦滤波器）对系统的影响，文章在不同光学带宽、残余色散以及非线性情况下，对不同滚降因子Rf的系统特性进行了研究。文章分别仿真研究了256 Gbit/s偏振复用16阶正交幅度调制（PDM-16QAM）信号在光学带宽为33、50及100 GHz时的传输特性、残余色散在-300~300 ps/nm区间内的特性和注入功率为-3~4 dBm情况下传输1 200 km光纤链路的特性。仿真结果表明，对于光学带宽受限的系统，Rf选取（1+Rf）B（B为信号波特率）与系统光学带宽相近的值为宜；对于光学带宽接近两倍波特率的系统，滚降因子Rf选取0.2~0.5为宜