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关键词： 农药   包装运输   危险性   TDG   分类和标签  

摘要： 综述了农药的危险性,研究了联合国《关于危险货物运输的建议书规章范本》(TDG)中对农药包装运输的危险性分类与标签。在此基础上,提出了对农药样品进行正确分类的思路,最终依据提出的思路和TDG的标准对农药样品进行了鉴定分类和标签。

关键词： 包装废物   分类收集   回收率  

摘要： 针对塑料类、纸类和金属类等典型包装废物,采用3种包装废物分类收集模式,并在3个居民小区进行示范.3种分类收集模式为:①自然状态;②在小区进行分类收集的宣传教育;③在宣传教育的同时由专业人员对小区生活垃圾进行分类.采用物质流分析的跟踪观察法,通过问卷调查、现场采样和入户采访,对不同模式下各类包装废物的产生量、回收量与回收率等废物流数据进行统计,得到包装废物从产生、回收到再利用和最终处置的物流分析图.结果表明:自然状态下包装废物也有一定的回收率,即我国现有的回收体系对包装废物的分类收集有一定的效果;不同类型包装废物的主要回收环节不同,纸类和金属类包装废物在家庭的回收率较高,而塑料类包装废物的回收主要依赖社会人员分拣;辅以宣传教育等方式,回收价值低、分类收集难度大的包装废物也能得到有效回收.

关键词： 木材检验   合理造材与利用   木材产品质量   重要环节   重要作用  

摘要： 文章通过对木材检验工作几个作用,如合理利用木材资源;加强企业经济核算与管理;提高企业经济效益等几方面进行论述。使我们加深了对木材检验工作的的重要作用的认识。

关键词： 木材检验   宏观特征   生长轮   年轮   早材   晚材   边材心材   管孔   木射线   树脂道   轴向薄壁组织  

摘要： 从生长轮、年轮、早材、晚材、边材心材、管孔、木射线、树脂道、轴向薄壁组织七个方面论述了木材的宏观特征,为全面了解木材的构造、进行科学检验提供了科学的依据。

关键词： 出入境检验检疫   检验检疫工作   检疫犬   工作犬   X光机   可替代   运输   邮寄  

摘要： 检疫犬是在出入境检验检疫现场执行搜寻任务的工作犬。检疫犬作为检验检疫工作中一种特殊的检测手段，就是利用犬灵敏的嗅觉，搜索出入境旅客的行李、邮寄包裹或在运输货物中，按国家有关规定禁止携带、邮寄、运输的物品。检疫犬作为一种检疫查验手段，可以弥补传统的人工抽查和X光机透视检查的不足，发挥不可替代的作用。

关键词： 检验医学   临床医学  

摘要： 检验医学是一门新兴的、独立的学科，是临床医学的重要组成部分。由于检验医学不断的进展，新技术的应用及方法学上的革命性变革，使检验质量和检验水平显著提高，使越来越多的临床医师依靠检验信息综合分析，进行诊断、治疗和预后判断，所以检验科的工作在临床诊疗中发挥着越来越重要的作用。检验医学是一门新兴的、独立的学科，是临床医学的重要组成部分。

关键词： 检验科   临床   沟通  

摘要： 随着医学科学的发展,医院检验科与临床相关学科之间已形成不可分割的相互关系,人们也越来越认识到医学检验在医学领域尤其在医院中地位的重要性。然而,要使医学检验在临床中充分有效发挥其作用,必需要求检验科与临床医生、护理人员之间紧密联系,加强沟通。

关键词： 木材   物理性质   木材质量   木材的水分  

摘要： 通过对木材的物理性质的细致探讨,使人们更加懂得了解木材物理性质对检验工作的重要作用。

关键词： Water sample authentication   Electronic tongue   Machine learning   PLS   Pulse voltametry   PCA  

摘要： This paper proposes the development of water sample classification and authentication, in real life which is based on machine learning algorithms. The proposed techniques used experimental measurements from a pulse voltametry method which is based on an electronic tongue (E-tongue) instrumentation system with silver and platinum electrodes. E-tongue include arrays of solid state ion sensors, transducers even of different types, data collectors and data analysis tools, all oriented to the classification of liquid samples and authentication of unknown liquid samples. The time series signal and the corresponding raw data represent the measurement from a multi-sensor system. The E-tongue system, implemented in a laboratory environment for 6 numbers of different ISI (Bureau of Indian standard) certified water samples (Aquafina, Bisleri, Kingfisher, Oasis, Dolphin, and McDowell) was the data source for developing two types of machine learning algorithms like classification and regression. A water data set consisting of 6 numbers of sample classes containing 4402 numbers of features were considered. A PCA (principal component analysis) based classification and authentication tool was developed in this study as the machine learning component of the E-tongue system. A proposed partial least squares (PLS) based classifier, which was dedicated as well;to authenticate a specific category of water sample evolved out as an integral part of the E-tongue instrumentation system. The developed PCA and PLS based E-tongue system emancipated an overall encouraging authentication percentage accuracy with their excellent performances for the aforesaid categories of water samples. (C) 2011 ISA. Published by Elsevier Ltd. All rights reserved.

关键词： family meals   family cohesion   diet   mediation analysis  

摘要： Objective: To confirm previously reported associations between family meal frequency and dietary intake, and to examine family cohesion as a potential mediator of this relationship. Design: Cross-sectional observational study. Data collected at baseline via questionnaire. Setting: Randomized, controlled household weight gain prevention trial. Participants: Participants were 152 adults and 75 adolescents from 90 community households. Variables Measured: Family meal frequency assessed with a single question. Perceived family cohesion measured by the Family Adaptability and Cohesion Evaluation Scale-III. Usual intake of targeted food items assessed with modified food frequency questionnaire. Analysis: Hierarchical linear regression with mediation analysis. Statistical significance set at alpha-level .05. Results: Family meal frequency was associated with intake of fruits and vegetables in adults, and sweets and sugar-sweetened beverages in adolescents. Family meal frequency was positively correlated with perceived family cohesion (r = 0.41, P < .01). Partial mediation by family cohesion was observed for family meal frequency and sweets intake in adolescents. Conclusions and Implications: Results suggest that family cohesion is not a consistent mediator of relationship between family meal frequency and individual dietary intake. Future studies should assess additional plausible mediators of this relationship in order to better understand the effect of family meals on dietary intake.