高校图书馆资源配置重中之重——样本书库

样本书库是图书馆文献资源配置体系重要一环,面对信息社会和并校扩招的新形势,样本书库以其独特的服务功能显示出强大的生命力。     

基于领域本体的矿物标本共享系统构建

传统的标本共享系统大多采用以概念为中心的信息描述框架,无法揭示矿物基本概念或术语之间多层次的语义关系,难以解决一词多义、多词一义、词义含混等问题,使得信息检索效率低下、资源集成困难.领域本体作为特定领域内共事概念模型的明确的形式化规范说明,能够清晰地表达复杂的语义信息,有助于解决这些问题.现以"概念-关系"为中心,利用与平台无关的矿物领域本体对标本结晶学与矿物学的内容进行描述,结合关系型数据库,设计并实现了基于领域本体的标本网络共享系统,有效表达了矿物标本检索中的语义信息,提高了标本检索的效率,减少了误检、漏检现象.     

"生物标本馆网"的开发利用

介绍了基于ASP技术的韩山师范学院生物标本展厅网(http：／／www．hstc．edu．cn／xibu／bio／zhantin/index.html)的结构、功能、实现方法以及网站在生物教学和科普活动中的应用。     

挖掘机液压系统比例式电液控制阀虚拟样机的仿真分析

对挖掘机虚拟样机中使用的数字液压伺服缸进行仿真分析。介绍数字液压系统的工作原理．给出数字液压伺服缸的原理图和组成结构。建立数字液压伺服缸的静态模型方程和其静态刚度的求解方程。在此基础上,对建立的虚拟模型进行仿真分析,得出螺旋槽截面尺寸对静态刚度的影响曲线图。     

动物实验室建设及其实验教学模式的探讨

从１９８４年以来,基本查清了六盘水地区的野生脊椎动物资源,自制了各类动物标本,改善了办学条件;在教学改革方面形成了具有特色的“自制实验材料—独立操作完成—学生口述面试—教师全面总结”的动物学实验课教学模式,培养了学生的综合能力,提高了教学质量     

Clinical biochemistry laboratory rejection rates due to various types of preanalytical errors

Introduction:

Preanalytical errors, along the process from the beginning of test requests to the admissions of the specimens to the laboratory, cause the rejection of samples. The aim of this study was to better explain the reasons of rejected samples, regarding to their rates in certain test groups in our laboratory.

Materials and methods:

This preliminary study was designed on the rejected samples in one-year period, based on the rates and types of inappropriateness. Test requests and blood samples of clinical chemistry, immunoassay, hematology, glycated hemoglobin, coagulation and erythrocyte sedimentation rate test units were evaluated. Types of inappropriateness were evaluated as follows: improperly labelled samples, hemolysed, clotted specimen, insufficient volume of specimen and total request errors.

Results:

A total of 5,183,582 test requests from 1,035,743 blood collection tubes were considered. The total rejection rate was 0.65 %. The rejection rate of coagulation group was significantly higher (2.28%) than the other test groups (P < 0.001) including insufficient volume of specimen error rate as 1.38%. Rejection rates of hemolysis, clotted specimen and insufficient volume of sample error were found to be 8%, 24% and 34%, respectively. Total request errors, particularly, for unintelligible requests were 32% of the total for inpatients.

Conclusions:

The errors were especially attributable to unintelligible requests of inappropriate test requests, improperly labelled samples for inpatients and blood drawing errors especially due to insufficient volume of specimens in a coagulation test group. Further studies should be performed after corrective and preventive actions to detect a possible decrease in rejecting samples.     

Detection and correction of incomplete duplicate 24-hour urine collections – theory and practical evidence

IntroductionThe intraindividual variability in urinary creatinine excretion is notoriously large. The aims of this study were to investigate the variability of duplicate consecutive 24-hour urinary creatinine excretions in patients and to develop a model for the detection and correction of discrepant creatinine excretions.Materials and methodsA group of 270 patients (82 men and 188 women) were included in the study. We collected the following data: urinary 24-hour volumes (volumetric/gravimetric) and urinary creatinine concentrations (Jaffé/enzymatic) on both collection days. We performed specific calculations to detect discrepant creatinine excretions.ResultsIn 60 patients (22%) discrepant collections were found. Among the remaining 78%, 22% of the patients collected very accurately (almost identical urinary creatinine excretions). In this subgroup the volume ratios and the creatinine concentration ratios behave inversely as in a dilution curve. A theoretical model and six collection scenarios were developed to detect, interpret and correct discrepant collections. Practical examples are given to illustrate the use of the model in successful correction of creatinine and other analytes for under- or overcollection.ConclusionsWe conclude that missed or overcollected urine volumes are the largest source of variation in creatinine excretion. Discrepancies in consecutive duplicate 24-hour creatinine excretions can be detected and corrected with specific calculations by means of the presented model. The effectiveness of these corrections is demonstrated with examples from daily practice. These calculations can be easily automated.     

自然科学博物馆标本藏品智慧化管理实践与思考——以国家海洋博物馆为例

自然科学博物馆作为重要的公共文化机构,承载着传播自然历史和科学知识的职责。标本藏品是自然科学博物馆的根基,随着标本藏品的不断积累,传统标本藏品管理方式面临困境。在博物馆智慧化建设背景下,智慧化理念与新技术为标本藏品管理带来了新机遇。本文以天津国家海洋博物馆为例,在分析标本藏品管理工作面临主要难点的基础上,回顾智慧化藏品管理系统建设工作实践,以期为自然科学博物馆标本藏品管理提供参考和借鉴,并思考未来藏品数据的应用方向。     

制备坐骨神经——腓肠肌标本方法的改进

坐骨神经——腓肠肌标本的制备是生理学的首次实验，章就其重要性提出了方法的改进及其在实验教学中的意义．