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南海深海体积混响及散射特性试验研究
Experimental study of deep-sea volume veverberation and scattering characteristics in the South China Sea

明明,泽霖,万芃,石扬
- , 2016, DOI: 10.16300/j.cnki.1000-3630.2016.06.005
Abstract: 深海中存在着众多的不均匀“水团”、分层、深海生物圈以及海底逸出气泡等,这些散射体对入射声信号的散射构成了深海体积混响。通过测量获取深海水体散射目标的散射强度,研究不同海区不同时间的体积混响,对进一步认识深海声学特性具有重要的作用,也有助于主动声呐系统的性能预报。从深海中的主要散射体的组成、分类及其特征出发,介绍了一种深海体积混响及散射特性的研究方法。通过垂直向下发射窄波束测量各个深度层上的散射强度,用直观的声学图像显示强度值。构建试验系统在南海进行了深海试验,通过处理和分析测量数据发现,深度100 m以内的鱼类和处于深海散射层的海洋生物是深海体积混响的主要贡献者。
There are many uneven "water masses", layers, deep-sea creatures and seabed overflow bubbles in deep sea, the scattering of incident acoustic waves on these scatterers constitutes the deep sea volume reverberation. A experimental study of volume reverberation in different sea and different times by measuring scattering strength of deep sea water contributes to a better understanding of the acoustic characteristics of deep sea. From the composition, classification, and characteristics of the main scatterers in deep sea, this paper introduces a research method for deep-sea volume reverberation and scattering characteristics. The scattering strength of each deep layer is measured by transmitting acoustic signal with vertical downward narrow beam and displaying the intensity value of scattering in acoustic image. The system has been tested in the South China Sea, and studies reveal that fishes within 100 meters of depth and the deep-sea creatures in the deep scattering layer are the major contributors to the volume reverberation.
纳米碳酸钙改性处理桉木单板对胶合板弯曲性能的影响
明明,袁光明,谭林朋,陈世尧
- , 2018, DOI: 10.13360/j.issn.2096-1359.2018.05.008
Abstract: 桉木因其材质疏松、易开裂、变形等缺陷而致其使用范围受限,为此,对桉木单板进行改性处理使其材性得到改善增强以扩大其用途。采用偶联剂KH-550对纳米CaCO3表面进行改性处理后,配制成质量分数分别为3.0%,5.0%,7.0%和9.0%的纳米CaCO3溶液,加压浸渍桉木单板,并以酚醛胶为胶黏剂热压成纳米CaCO3增强胶合板(5层),并采用FT-IR、SEM、万能力学实验机等对所获胶合板的结构与物理力学性能进行测试与表征分析。FT-IR分析表明,纳米CaCO3粒子表面上接枝了改性剂KH-550的特征官能团; SEM分析表明,改性的纳米CaCO3粒子均匀分散在桉木单板纤维上; 当纳米CaCO3质量分数为5.0%时,其处理后的质量增加率最大,达7.0%,胶合板的弹性模量、静曲强度最优,分别达到8 416和71.38 MPa,与未添加纳米CaCO3的相比分别提高了10.4%和27.1%。这是因为纳米CaCO3粒子经分散及KH-550改性后,比表面积增大,表面活性增强; 通过偶联剂的作用将纤维素和CaCO3粒子界面结合力提高,形成良好的界面结合,从而使胶合板的静曲强度、弹性模量增加。
The utilization of fast-growing wood is limited due to its major drawbacks, such as low density, poor mechanical properties, easy cracking and deformation. To promote the application of the fast-growing wood, it is necessary to address these drawbacks by developing cost-effective pre-treatment methods. The traditional wood treatment methods are not only time-consuming and labor-intensive, but also unable to significantly improve the wood properties. Emerging nanomaterials have broad application prospects. Through the screening of nanomaterials, nano-CaCO3 stands out in nanomaterials due to its superior properties and relatively inexpensive prices. However, there are a large number of active hydroxyl groups on the surface of nano-CaCO3 particles. The van der Waals forces generated between the hydroxyl groups make the particles unstable, resulting in particle agglomeration. The aim of this study, is to reduce the occurrence of this phenomenon and make the nano-characteristics of nano-particles of come into full play. The surface of nano-CaCO3 was modified with the coupling agent of KH-550, and the nano-CaCO3 solution with the mass fractions of 3.0%, 5.0%, 7.0%, and 9.0% was prepared and impregnated into eucalyptus veneers, respectively. The adhesive was hot-pressed into nano-CaCO3 reinforced plywood(five layers). The structure and physico-mechanical properties of the plywood obtained were characterized by the FT-IR, SEM, and universal test machine. The results of FT-IR analysis showed that the functional group of modifier KH-550 was grafted on the surface of nano-CaCO3 particles. The results of SEM analysis indicated that the modified nano-CaCO3 particles were uniformly dispersed on the eucalyptus veneer fibers. When the nano-CaCO3 content was 5.0%, the maximum weight gain after treatment was 7.0%. The elastic modulus and the static bending strength of the plywood were also examined, and the optimum values were 8 416 MPa and 71.38 MPa, respectively, which increased by 10.4% and 27.1%, respectively, compared with those without nano-CaCO3. It was because that the
泰安市蟑螂密度季节消长及其抗药性分析
Seasonal fluctuation of Cockroach density and its resistance,Tai′an City

明明
- , 2016,
Abstract: 目的 了解泰安市蟑螂密度及其季节消长情况,掌握优势种群德国小蠊对常用杀虫剂的抗药性状况,为制定有效的防控方案提供科学依据。方法 随机选择城区农贸市场1处、餐饮2处、宾馆1处、医院1处,居民区1处作为监测点,蟑螂密度监测采用粘捕法,抗药性试验采用药膜接触法。结果 全年共捕获蟑螂3 120只,平均密度为1.30只/张,优势种群是德国小蠊。从全年的季节消长曲线来看,蟑螂密度季节消长有两个高峰,在7月份形成密度最高峰(2.18只/张),9月份又出现密度小高峰(1.94只/张)。不同生境蟑螂密度不同,农贸市场(2.5只/张)>医院(1.9只/张)>居民区(1.35只/张)>餐饮(0.98只/张)>宾馆(0.73只/张)。不同生境蟑螂密度季节消长曲线有所不同。抗药性监测结果显示,实验室德国小蠊敏感品系(S)对高效氯氰菊酯、乙酰甲胺磷、溴氰菊酯和残杀威的KT50分别为3.95、7.33、5.02和10.99min。而现场品系(R)对上述杀虫剂的抗性系数分别是敏感品系的1.54、8.71、1.40和0.84倍。结论 德国小蠊是泰安市重点防控对象,农贸市场和医院是重点防治场所。建议采取环境治理为主,在密度高峰期(6-9月份)采取菊酯类杀虫剂进行化学防治。
徐州市主城区个人生态足迹空间变异性研究
明明, 丁忠义, 守国, 赵华, 侯湖平, 高婷
自然资源学报 , 2010, DOI: 10.11849/zrzyxb.2010.04.008
Abstract: ?为揭示徐州市主城区个人生态足迹的空间变异性并分析引起其空间变异的原因,采用问卷调查和克里格插值法对个人生态足迹及其组分的空间分布进行了分析。结果表明:①徐州市主城区个人生态足迹分别是中国和全球个人生态足迹的1.48倍和1.18倍,其中商品服务足迹所占比例最大(51.1%),徐州市主城区处于弱不可持续发展状态;②经过实验半变异函数交叉验证,球状、指数和高斯模型可以较好模拟个人生态足迹及其组分的空间变异,其中,个人生态足迹、住宅足迹和商品服务足迹的块基比均小于25%,表现出强烈的空间相关性,碳足迹和食物足迹处于25%至75%之间,表现出中等空间相关性;③个人生态足迹、碳足迹、食物足迹和商品服务足迹总体上呈南高北低趋势,以市中心为峰值逐渐向周围递减,住宅足迹呈多峰值分布,最高值位于远离市中心的郊区。对个人生态足迹及其驱动因素进行空间相关分析,发现,调查对象的社会经济背景和空间特征对个人生态足迹及其组分的空间变异特征具有重要影响。
表面改性纳米SiO2增强木质纤维/聚氯乙烯复合材料性能
Properties of wood fiber/polyvinyl chloride composites reinforced by surface modified nano SiO2

谭林朋,袁光明,罗卫华,胡云楚,明明,陈世尧
- , 2018, DOI: 10.13801/j.cnki.fhclxb.20170509.004
Abstract: SiO2粒子经偶联剂γ-氨丙基三乙氧基硅烷(KH550)表面改性后,与木质纤维、聚氯乙烯(PVC)及其它助剂通过熔融混炼制备改性SiO2-木质纤维/PVC复合材料,用FTIR、SEM和同步热分析仪(STA)对SiO2粒子和SiO2-木质纤维/PVC复合材料的结构与性能进行测试与表征。FTIR分析表明,SiO2粒子表面接枝了KH550的特征官能团,KH550成功地接枝到SiO2粒子表面;SEM分析表明,改性纳米SiO2粒子能在木质纤维/PVC复合材料中均匀分散,其粒径在100 nm左右;添加改性的SiO2粒子后,木质纤维和PVC结合更加紧密,孔洞间隙减少。纳米SiO2质量分别占木质纤维质量的10%、8%和10%时,SiO2-木质纤维/PVC复合材料的弹性模量、拉伸强度、冲击强度分别达到最优值4.66 GPa、31.12 MPa和4.11 kJ/m2,与未添加SiO2的复合材料相比分别提高了50.29%、28.91%和16.65%。 The surface modification of nano SiO2 particles with γ-aminopropyl triethoxysilane(KH550) was carried out, The SiO2-wood fiber/polyvinyl chloride(PVC) composites were prepared by melt-mixing with wood fiber, PVC and other additives. The structure and properties of SiO2 particles and SiO2-wood fiber/PVC composites were tested and characterized by FTIR, SEM and STA.FTIR analysis shows that the surface of SiO2 particles bond KH550 characteristic organic functional group, KH550 successfully grafts to the surface of SiO2 particles. SEM analysis shows that the modified nano-SiO2 particles can be dispersed uniformly in the SiO2-wood fiber/PVC composites with a particle size of about 100 nm; After adding the modified SiO2 particles, the combination of wood fiber and PVC is more tight, the hole gap is reduced. When the mass ratio of nano SiO2 to wood flour mass is 10%, 8%, 10%, the mechanical property of the SiO2-wood fiber/PVC composites will reach the optimal state:elastic modulus, tensile-strength and impact-strength are 4.66 GPa, 31.12 MPa and 4.11 kJ/m2, increased by 50.29%, 28.91% and 16.65%, respectively. 国家林业公益性行业科研专项资助项目(201504503);国家自然科学基金(31770606);湖南省科技重大专项(2017NK1010)
大学生价值观冲突研究
A Study of the Value Conflict of College Student
 [PDF]

明明, 李惠
Advances in Psychology (AP) , 2012, DOI: 10.12677/AP.2012.23016
Abstract: 基于文献分析与开放调查,编制了大学生价值观冲突问卷。通过探索性因素分析和验证性因素分析结果表明:大学生价值观冲突由个人目标手段冲突、社会目标手段冲突、规则间冲突等3个因素构成,问卷具有较好的信效度。同时还对513名大学生价值观冲突现状进行了调查,结果表明:大学生中普遍存在着不同程度的价值观冲突,不同群体的大学生价值观冲突存在差异。
Value conflict is mutual competition between values. Some studies have shown that the values conflict affects the individual success, stress, wellbeing, and even mental health. Therefore, keep the same values system is very important. However, there is few measurement of values conflict, or lack of psychological structure of individual values conflict. In this study, based on literature review and open-ended questionnaire surveys, we formulate college students’ value conflict questionnaire. Through exploratory factor analysis (EFA) and confirmatory factor analysis (CFA), the result showed that the structure of the college students’ value conflict is made up of three dimensions, namely personal goal-means conflict, social goal-means conflict and rules conflict, and the questionnaire has high reliability and validity. Meanwhile, this study conducted analysis of 513 college students’ value conflict present situation, the result showed that college students have different levels of value conflict and different groups show diverse features.
近爆炸性自回归序列中参数估计量的渐近性质
Asymptotic Properties for the Parameter Estimator in the Near-Explosive Autoregressive Process
 [PDF]

明明, 孟娇
Pure Mathematics (PM) , 2014, DOI: 10.12677/PM.2014.46038
Abstract:
本论文的目的是研究近爆炸性自回归序列\"\"中, 当\"\"\"\"时参数\"\"最小二乘估计量的渐近分布。
In this paper, we focus our attention on the following near-explosive autoregressive process: \"\" . When \"\" and \"\" in the near-explosive case, the asymptotic dis-tributions for the least squares estimator of \"\" can be obtained.
简单线性EV回归模型中最小二乘估计量的Berry-Esseen估计
A Note on LS Berry-Esseen Estimator in Simple Linear EV Regression Model
 [PDF]

孟娇,明明
Advances in Applied Mathematics (AAM) , 2015, DOI: 10.12677/AAM.2015.41004
Abstract: 本论文的目的是研究简单线性存在误差项(EV)退化模型的最小二乘估计量中心极限定理的收敛速度。进一步,Miao,Yang和Shen在[1]中对其实际应用做了详细的介绍。
In this paper, we study the convergence rate of the central limit theorems for LS estimator in simple linear errors-in-variables (EV) regression model. Further, its application has been introduced detailedly by Miao, Yang and Shen in[1].
干扰项预习效应的现象与机制
The Phenomenon and Mechanisms of the Distractor Previewing Effect
 [PDF]

兵兵, 李顺
Advances in Psychology (AP) , 2014, DOI: 10.12677/AP.2014.42030
Abstract: 干扰项预习效应(Distractor Previewing Effect)是视觉搜索实验中出现的一种试次间效应。实验任务要求被试在屏幕上显示的一组刺激中找到一个与干扰项颜色不同的靶子,判断它的形状并做出相应的反应。实验中混合呈现有靶子和无靶子的试次。如果在一个无靶子的试次后呈现一个有靶子的试次,而且靶子颜色和之前无靶子试次中的刺激颜色一样,被试的反应会比有靶子试次中干扰项的颜色和之前无靶子试次中的刺激颜色一样时慢。行为实验、眼动实验、事件相关电位实验的结果均显示,这种试次间效应是一种注意现象,反映了注意的抑制。本文介绍干扰项预习效应的现象并将其与相关现象进行比较,探讨它的内在机制和未来的研究方向。
The Distractor Previewing Effect is an inter-trial effect in visual search. In a visual search task, participants are asked to find a color oddball among distractors and then to identify its shape. Their responses are slower when the target in the current target-present trial has the same color as the items in the preceding target-absent trial than when the color of the current distractors does so. This inter-trial effect is not due to response inhibition, but reflects attention inhibition from one trial to the next. This paper introduces the phenomenon of the DPE, compares it to other inter-trial effects in visual search, and discusses its underlying mechanisms and future research directions.
光盘时代的缩微技术
明明
现代图书情报技术 , 1989,
Abstract: 本文阐述了光盘在存储密度、检索速度和联机处理等方面的优势和缩微在介质寿命、标准化水平、技术成熟程度、法律地位、数据记录/还原手段、彩色影象处理、与原有信息系统的兼容性及系统运行成本等方面的长处。提出了两者将长期共存互补,共同成为完备的信息管理系统的重要组成部分的观点。并预见缩微技术将在与光盘及其它新技术的竞争与结合小发展提高。
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