课程文献中心 更多>>

关键词： 木材检验技术   木材运输   材质  

摘要： 本文从树木的管理和保护、木材等级评价、被检验木材数量规格的确定以及保证木材运输合格率等方面阐述了木材检验技术的重要性,以期为相关人员提供科学参考。

关键词： 分类   计数   包装   整理   结构简易轻便   价格低廉  

摘要： 本装置主要由输送装置,分类装置,计数装置,包装装置组成。分类装置的分币滑道呈空间折叠型层状分布,可高效的完成硬币的分类。计数装置运用光电结合技术实现对硬币的精准计数。包装装置利用单片机和接近开关的作用完成对硬币的包装。

关键词： 经济效益   检验工作   木材   季风气候区   长安区   关中平原   气候温和   资源丰富  

摘要： 1前言 长安区地处关中平原腹地，南依秦岭，属于暖温带半湿润大陆性季风气候区，雨量适中、四季分明、气候温和。长安境内植物资源丰富，森林资源是长安区重要的经济来源。

关键词： 手印痕迹检验   案件侦破   作用  

摘要： 刑事物证技术,是指公安、司法部门的专业人员,依法为侦查破案,研究涉及刑事案件的物证与犯罪活动的联系,以及发现、提取、分析、检验各种物证的理论和方法的总称。手印犯罪现场上最常见的痕迹之一,手印是指手的掌面作用于有形客体所留下的痕迹。本文对手印痕迹检验之于案件侦破的作用进行了详细的探讨分析,并提出了许多自己的意见和看法。

关键词： 食品检验实验室   质量体系   强化  

摘要： 我国经济不断发展,人们的生活水平有了显著地提高,对于生活安全和质量的要求也越来越高。在人们的生活中,食品有着重要的存在意义。但是近年来,食品安全事件曝光的越来越多,老百姓反应强烈。为了对食品安全加强控制,积极地进行食品检验意义重大,而要发挥食品检验的积极作用,首要就是加强食品检验实验室的管理。基于此,本文就食品检验实验室管理如何强化质量体系的作用进行分析,旨在促进提高我国的食品质量,进而提升人们的生活品质。

关键词： 微量白蛋白检验   诊断   肾小球  

摘要： 目的分析微量白蛋白检验在诊断肾小球疾病方面的作用。方法在我院2013年1月-2016年12月期间收治的糖尿病肾病患者中随机抽取40例作为分析组,并在同一时间体检的健康群体中随机抽取40例作为对照组。对两组均进行微量白蛋白检验,比较两组之间尿微量白蛋白含量和阳性率情况,并分析尿微量白蛋白和病程存在的联系。结果分析组的尿微量白蛋白含量高于对照组,组间数据有较大差异,有统计学意义(P<0.05);分析组患者中13年以上病史患者尿微量白蛋白含量和阳性率均高于6-12年和0-6年病史的患者,组间数据有较大差异,有统计学意义(P<0.05)。结论微量白蛋白检验在诊断肾小球急病方面有重要意义,有利于疾病的临床诊断、疾病监测、疾病发展情况和预后等,可广泛运用。

关键词： 卫生应急   预防措施   信息格式   http   中所  

摘要： 2017年3月22日,欧盟修订（EC）No 1272/2008,混合物质的包装、标签和分类条例,此次修订主要增加了附件VIII,以增加混合物质的卫生应急措施和预防措施。附加VIII主要规定了混合物质的一般要求、需要提交的具体信息、提交的信息格式。并且根据附件中所列的危险物质浓度范围,需要在标签中明确标识。此法规的具体实施日期为2020年1月1日。

摘要： Introduction This paper illustrates the use of cohort data from a population to describe the early life prevalence and odds ratios (ORs) of the main classes of International Classification of Diseases (ICD) associated with any mental disorder arising at any time during the 16 year study period. Objectives The main ICD disorder classes were examined in relation to psychiatric disorders over 16 years in a cohort under the age of two years between April 1st, 1993, and January 1st, 1995. Aims To demonstrate the utility of studying the complete profile of associated diagnoses over time in a population cohort. Methods The total number of individuals under the age of two years before 1995 (n = 17,603) were tallied within each main class of ICD disorder by year and expressed as ORs of those with and without any 16-year psychiatric disorder. Results The greatest annual rates observed in the early years of life were for the following main ICD classes of disease: respiratory system, sense organs, symptoms signs ill-defined conditions, no diagnosis, injury poisoning, and skin subcutaneous tissue disorders. These disorders also had the highest ORs in early life given the presence of a mental disorder at any time during the study period. Discussion Knowing the early life main class diagnoses associated with psychiatric disorders could guide both basic science research as well as early intervention social and health investment policies. Disclosure of interest The authors have not supplied their declaration of competing interest.

关键词： Single sample per person   Face recognition   Decision pyramid classifier   Image partitioning   Feature extraction   LINEAR-REGRESSION   TRAINING SAMPLE   REPRESENTATION   IMAGE   FLDA  

摘要： The single sample per person (SSPP) problem is a great challenge for real-world face recognition systems. In an SSPP scenario, there is always a large gap between a normal sample enrolled in the gallery set and the non-ideal probe sample. In this paper, we propose a new face recognition method, called decision pyramid classifier (DPC), to solve SSPP problems with large appearance variations (e.g., illumination, expression and partly occlusions). Unlike the conventional image partitioning methods, the proposed DPC is a nonparametric method which does not require a training process. In the data preprocessing phase of DPC, we divide each training image into multiple non-overlapping local blocks and respectively extract features from each block to generate the training feature set. For an unseen image, DPC requires obtaining its features using the exactly same preprocessing. By constructing a decision pyramid, we predict the final category of the unseen face image. Experimental results show that DPC possesses higher recognition rate than other related face recognition methods.

关键词： Text messaging   Emoticons   Perceived playfulness   Social interaction   Mobile instant messaging   WORD-OF-MOUTH   COMPUTER-MEDIATED COMMUNICATION   ONLINE   PLAY   PERSONALITY   CONSUMERS   CONNECTEDNESS   STORES   SCALE   NEED  

摘要： Mobile instant messaging is the communication technology revolution that is changing the way people communicate. The adoption rate is surging and the massive growth is experienced worldwide. Prior studies on instant messaging have been primarily concerned with its task-relevant or functional aspects, while less attention is paid to social interaction aspects. Drawing from media richness theory, present research highlights that social interaction factors can be facilitated by an enriched communication channel to create closer interpersonal social relationships. Specifically, the findings illustrate that the combined effect of text messaging and emoticon use increases information richness, which leads to perceived playfulness in mobile instant messaging. In addition, the perceived playfulness fostered in the instant messaging process plays a driving role in facilitating social connectedness, identity expressiveness between users and advocacy of mobile instant messaging usage. (C) 2016 Elsevier Ltd. All rights reserved.