塑料抗菌剂国内外开发现状及市场分析

阐述了抗菌剂的种类及其作用机理,详细介绍了塑料抗菌剂的国内外市场、开发现状及发展趋势,对今后国内市场进行了预测,并提出了我国塑料抗菌剂的发展建议。     

新显色剂2，6－二溴－4－乙氧基偶氮胂直接吸光光度法测定微量铋

新显色剂２，６－二溴－４－乙氧基偶氮肿在１．５ｍｏｌ·Ｌ－１ＨＣｌＯ４介质中，与Ｂｉ（Ⅲ）生成稳定的深色络合物，最大吸收波长为６３９ｕｍ，摩尔吸光系数为９．６７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，灵敏度高，常见离子允许量大。Ｂｉ（Ⅲ）在０～２５μｇ／２５ｍＬ范围内符合比耳定律。以试样空白为参比，直接吸光光度法测定铜及铜合金中的铋，方法简便，结果令人满意。     

发展节能省地型住宅积极开发节能利废优质墙材产品

此文是作者于2005年6月25日在粉煤灰综合利用网和《粉煤灰综合利用》杂志社在上海共同召开的“第二届国际粉煤灰综合利用墙材革新和建筑节能高级论坛”上的发言,本刊略作删节发表。     

石英砂的塑性机理研究

研究了石英砂的塑性并对其进行改善,得出石英砂颗粒大小、砖坯含水率、砖坯p H值和增塑剂含量对砖坯塑性的影响规律及机理,并且为利用石英砂而采用可塑成型去制备高性能的烧结砖探索出了合适的成型工艺条件:球磨时间24h、含水率为29%、坯料p H=9和增塑剂含量为5%。     

Measuring virtual experience in a three-dimensional virtual reality interactive simulator environment: a structural equation modeling approach

With the rapid development of the VR market, virtual experience has increasingly been the object of study in recent years. A growing number of studies have reported the positive effect that virtual experience can have on a user’s mood and loyalty. However, few studies have investigated the influence of the mechanism of virtual experience on users’ mood and loyalty. To compensate for this research gap, this study aims to evaluate consumers’ virtual experience by examining the flow state in a virtual environment. A total of 368 valid questionnaires were collected, and a structural equation modeling approach was employed in the data analysis. The study reveals that forming flow involves many factors: the intrinsic characteristics of the mediated environment, the consumer’s assumptions and perceptions prior to entering the flow state, the stage at which the customer enters the flow state, and the consequences of the flow experience.     

Coverage enhancement by using the mobility of mobile sensor nodes

Coverage is a fundamental problem in sensor networks. Sensor coverage, which reflects how well a sensor network is monitored by sensors, is an important measure for the quality of service (QoS) that a sensor network can provide. In mobile sensor networks, the mobility of sensor nodes can be utilized to enhance the coverage of the network. Since the movement of sensor nodes will consume much energy, this mobility of sensor nodes should be properly managed by some pre-defined schemes or protocols. By noticing this issue, some existing works have proposed several movement-assisted sensor deployment schemes. These works assume that the target field is a 2-dimensional space. In this paper, we study a generalized case of this problem whereby the target field can be a space which ranges from 1-dimensional to 3-dimensional. Two variations of the movement-assisted sensor deployment problem with different optimization objectives were formulated. We identify a set of basic attributes which can be used as guidelines for designing movement-assisted sensor deployment schemes. Based on these attributes, we propose efficient algorithms for both variants of the movement-assisted sensor deployment problem.     

AutoRELAX: automatically RELAXing a goal model to address uncertainty

Dynamically adaptive systems (DAS) must cope with system and environmental conditions that may not have been fully understood or anticipated during development. RELAX is a fuzzy logic-based specification language for identifying and assessing sources of environmental uncertainty, thereby making DAS requirements more tolerant of unanticipated conditions. This paper presents AutoRELAX, an approach that automatically generates RELAXed goal models to address environmental uncertainty. Specifically, AutoRELAX identifies goals to RELAX, which RELAX operators to apply, and the shape of the fuzzy logic function that establishes the goal satisfaction criteria. AutoRELAX generates different solutions by making tradeoffs between minimizing the number of RELAXed goals and maximizing delivered functionality by reducing the number of adaptations triggered by minor and adverse environmental conditions. In a recent extension, AutoRELAX uses a stepwise adaptation of weights to balance these two competing concerns and thereby further improve the utility of AutoRELAX. We apply it to two industry-based applications involving network management and a robotic controller, respectively.     

西石门铁矿南区崩落卸压采矿法试验及应用效果

在缓倾斜中厚矿体底板岩性不稳固的条件下，采用有底柱崩落法，由于电耙道大多处于空区边部应力集中的部位，致使堑沟及底部结构巷道破坏严重而使回收率极低，采用无底柱崩落卸压则可有效解决上述难题。本文简要介绍该方法的原理、方案结构、安全措施及应用效果，供借鉴。     

远红外腈纶纤维的研制

分析了远红外纤维保暖的机理,确定了试验流程及工艺条件,分析产品中远红外素的分散性,远红外素对原液粘度的影响,远红外纤维的性能以及远红外纤维的发射率.     

基于广义Hoek-Brown准则的节理岩体力学参数折剪计算

节理化岩体力学参数是矿山工程地质和稳定性分析的重要基础数据,一般在实验室通过单轴、三轴试验只能得到岩石的力学参数,无法得到岩体的力学参数。目前,利用岩石力学参数确定岩体力学参数的方法较多,但都过于烦琐或准确度不高,急需一种新的简易确定方法。因此,通过利用基于广义Hoek-Brown准则的地质强度指标（GSI法）,并结合相应的岩土分析软件,强度折剪岩石力学参数值,从而得到岩体的力学参数。通过将该方法应用于赤峰中色白音诺尔矿业有限公司岩体力学参数的计算中,证明采用该方法考虑岩体的结构面和完整性,可较为准确地反映节理化岩体的力学特性,且方便可行,具有工程实用价值。?