Sound Quality Analysis and Prediction Modeling of Forklift Trucks Based on Grey System Theory

为了研究灰色系统理论在声品质预测建模方面应用的有效性,对5款3吨位叉车在怠速和额定转速工况下的30个车内外辐射噪声样本进行了研究。以烦躁度为主观评价指标,采用等级评分法进行了主观评价实验。运用Artemi S软件分析计算了主要心理声学客观参数。选取了响度、尖锐度、粗糙度和抖动度为主要分析对象;运用灰色系统理论算法分析了烦躁度与心理学客观参数的相关性,得到各相关系数。证明了所取心理学客观参数与烦躁度之间具有较高的相关性。基于灰色系统理论的GM（0,N）模型,建立了烦躁度的预测模型,并对预测模型进行了误差检验。结果表明基于灰色系统理论所建立的烦躁度预测模型具有较高的精度,即预测值能够较接近人的主观感受。To discuss the application effectiveness of grey system theory in sound quality prediction modeling, 30 radiation noise samples of 5 different 3 tonnage forklifts under the conditions of idle and rated speed were taken as the research object, and subjective evaluation experiment was carried out with grading method taking annoyance as subjective evaluation index;the primary objective psychology acoustical parameters were calculated with ArtemiS, and the loudness, sharpness, roughness and fluctuation were selected as the main analysis object;by using the grey system theory, the correlation between the annoyance and the objective parameters of psychology was analyzed, and the correlation coefficient was obtained;it was proved that the correlation between the objective parameters and the annoyance was high.Based on the GM（0,N） model of grey system theory, the prediction model of annoyance was established, and the error test of the prediction model was carried out;results showed that the prediction model based on grey system theory had higher accuracy, that was to say and the prediction of value was more close to human＆#39;s subjective feelings.福建省科技重大专项（2015HZ0002）资

STUDIES ON ISOLATION, PURIFICATION AND SOME PHYSICAL AND CHEMICAL PROPERTIES OF ALKALINE PHOSPHATASE FROM GREENCRAB (SCYLLA SERRATA)

陈清西, 男, 出生于1959 年2 月, 硕士, 副教授,Fax:0086-020-84451672[中文文摘]于1995年2月在厦门海域采集锯缘青蟹，取其内脏经正丁醇抽提、硫酸铵分级分离、DEAE-52离子交换柱层析及SephadexG－200凝胶过滤柱层析纯化，获得碱性磷酸酶制剂，以快速蛋白液相色谱及聚丙烯酰胺凝胶电泳检验其纯度，获得单一蛋白纯的酶制剂。研究酶的物理性质得出该酶的紫外特征吸收峰在278nm处，荧光激发光谱特征峰在282nm处，荧光发射光谱特征峰在343nm处，全酶分子量为78kD。研究酶催化对－硝基苯磷酸二钠水解的动力学性质，金属离子及有机溶剂对其活力的影响，得知该酶水解对－硝基苯磷酸二的最适温度为52℃，最适pH为9．2，米氏常数为6．67×10-4mol／L，酶活性中心的转换常数为460min-1；Mg2＋对酶有显著的激活作用；Cn2＋，Hg2＋和甲醇、乙醇、乙二醇对酶有不同程度的抑制，说明在一定条件下，效应物引起酶分子构象发生了不同程度的变化。[英文文摘]An alkaline phosphatase from green crab (Scylla serrata) was collected from Xiamen sea water in February, 1995. It was prepared and purified by means of the following techniques:n-butanol extraction, ammanium sulfate precipitation, ion exchange chromatography on DEAE cellulose column (DEAE-52) and gel filtration chromatography on Sephadex G-200. The preparation was shown to be homogeous on FPLC and polyacrylamide gel electroporesis. The characteristic peak of UV-absorption spectrum of the enzyme was found to be at 278 nm, the fluorescence excitation spectrum at 282 nm, and the fluorescence emission spectrum at 343 nm. The molecular weight of the enzyme is 78 kD At pH=9.5, the optimum pH is 9.2, at 37℃. At pH= 9.0, 37℃, the Michaelis constant (KM) is 6.67 × 10-4mol/L; Kcat ,460min-1. Magnesium ion activates the enzyme significantly. Copper ion, mercury ion,methanol, ethanol and ethylene glycol ichibit the enzyme echvity in vareing degrees, which indicates tha the conformation of the enzyme caused by the effectors changes at different levels. The inhibition mechanism had been preliminarily studied.国家自然科学基金!3947056

Study on the Nano Diamond Stable Water Disperse System and Applying in Composite Chromium Plating

研究纳米金刚石水基稳定分散体系的组成及分散操作工艺.以低泡沫磺酸基阴离子表面活性剂作分散活化剂,比较了各种机械搅拌方式对体系稳定性的影响,并以复合镀铬作应用试验.测定了纳米金刚石复合镀铬的镀层沉积速率,镀层硬度,耐磨性等参数,由SEM观察镀层晶态结构图像.列举了试验结果、测试数据及复合镀铬的工艺条件,并对实验结果及机理进行了分析探讨.The nano diamond stable water disperse system was studied.The low-bublles sulfonic anion sufcace active agent had been choosed out for this system.The affect of different physics agitation mothed on the water separate system stablity were conpared.The nano diamond stable water separate system had been applied to the composite chromium electroplating on this tests.The depositing speed,hardnees and wearing capacity of plating layer were tested.And the metallography structure of plating layer was charasterized by SEM.The test results and reaction princeple were discussed.作者联系地址：青岛大学应用技术学院,青岛大学应用技术学院,青岛大学应用技术学院,山东黄金集团公司金凯驰纳米科技公司,山东黄金集团公司金凯驰纳米科技公司,山东黄金集团公司金凯驰纳米科技公司 山东青岛266061,山东青岛266061,山东青岛266061,山东济南250000,山东济南250000,山东济南250000Author's Address: 1.Qingdao University Technology College,Qingdao 266061,Shandong,China,2.Shandong Gold Group Co.,Jinan 250000,Chin

Expertadvice on the diagnosis and intervention of Chinese developmental dyslexia

发展性阅读障碍是一种以儿童阅读能力显著落后于年龄和智力应有水平为主的障碍，属于具有遗传基础的神经发育性障碍。目前国内对发展性阅读障碍的评估、诊断与干预多出现在科研场合，临床诊疗和教育性质的应用明显不足。专家意见采用专家书面反馈意见和视频会议讨论的形式，以发展性阅读障碍的病因学基础为指导，对发展性阅读障碍的临床表现、诊断流程及干预原则等形成统一意见，旨在为相关专业领域医师和康复专业人员提供参考和帮助，亦为开展对发展性阅读障碍的教育性干预活动提供参考。</p

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies