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关键词： 检验医师   临床工作   检验医学   医学检验   临床检验   工作者  

摘要： 我国检验医学与国际接轨，发展迅速。医学检验向检验医学的转变，丰富了临床检验的内涵，连接检验与临床关系的检验医师岗位受到高度重视。笔者作为八十年代初期毕业的检验工作者，对检验医师在临床中的积极作用颇有感触，总结如下。

关键词： k-NN classifier   LRC   SRC   Tikhonov regularization   Pattern classification   NEAREST-NEIGHBOR CLASSIFIERS   FACE-RECOGNITION   RIDGE-REGRESSION   SIGNAL RECOVERY  

摘要： The classical k-NN classifier has been widely used in pattern recognition. However, it does not take into account the structural information of local samples. This paper presents a novel classifier named component-based global k-NN classifier (CG-k-NN), which takes advantage of the structural information of the local neighbors for enhancing the classification performance. We choose k nearest neighbors of a given testing sample globally at first, and then use these neighbors to represent the testing sample via ridge regression. In the further step, we construct the component image of each class by using the intra-class images from the k nearest neighbors and the corresponding representation coefficients. Finally, the testing sample is assigned to the class that minimizes reconstruction residual. The proposed method CG-k-NN is evaluated using the ORL, FERET, AR face image database and PolyU palmprint databases. The experiment results demonstrate that our method is more efficient and effective than the state-of-the-art methods such as sparse representation based classifier (SRC) and linear regression based classifier (LRC). (c) 2012 Elsevier B.V. All rights reserved.

关键词： 大便化验   检验   临床医学  

摘要： 正常大便主要由消化后未被吸收的食物残渣、纤维素、消化道分泌物、大量细菌、无机盐和水等组成。其颜色与性状，正常成人的大便为黄褐色成形软便；婴儿呈黄色或金黄色不成形糊状便。

关键词： 刑事诉讼   痕迹检验   证据  

摘要： 在刑事诉讼活动中,人民法院根据公安机关对刑事案件的前期侦查结果、书证、物证及证人证言等,对公诉机关对犯罪嫌疑人所犯罪行的指控依法进行宣判,因此公安机关对刑事案件前期侦查工作的水平将在很大程度上影响和决定刑事诉讼程序和刑事审判活动能否高效运行。刑事痕迹检验工作是刑事诉讼证据的直接来源之一,急需要司法机关采取切实有效的措施,更加突出刑事痕迹检验在刑事诉讼证据收集工作中的重要作用。

关键词： 适配体   指数富集配体的系统进化技术   信号识别   疾病标志物  

摘要： 适配体是利用指数富集配体的系统进化技术从含有大量序列的随机文库中筛选出来,能通过特定三维结构与靶标紧密结合的单链DNA或RNA。适配体不仅能与各种有机物或无机物靶标分子高特异性、高亲和力结合,还具有分子量小,免疫原性低,稳定性好,制备和标记方便等优点。适配体将有可能替代抗体,在疾病的诊断和治疗中发挥重要的作用。本文就适配体作用和筛选的原理及策略、适配体技术在医学检验研究中的作用以及面临的挑战作简要的述评。

关键词： Object categorization   And-Or graph   Generalized samples   Cascaded inference   RECOGNITION   MODEL  

摘要： In this paper, we present a framework for object categorization via sketch graphs that incorporate shape and structure information. In this framework, we integrate the learnable And-Or graph model, a hierarchical structure that combines the reconfigurability of a stochastic context free grammar (SCFG) with the constraints of a Markov random field (MRF). Considering the computation efficiency, we generalize instances from the And-Or graph models and perform a set of sequential tests for cascaded object categorization, rather than directly inferring with the And-Or graph models. We study 33 categories, each consisting of a small data set of 30 instances, and 30 additional templates with varied appearance are generalized from the learned And-Or graph model. These samples better span the appearance space and form an augmented training set Omega(T) of 1980 (60 x 33) training templates. To perform recognition on a testing image, we use a set of sequential tests to project Omega(T) into different representation spaces to narrow the number of candidate matches in Omega(T). We use "graphlets" (structural elements), as our local features and model Omega(T) at each stage using histograms of graphlets over categories, histograms of graphlets over object instances, histograms of pairs of graphlets over objects, and shape context. Each test is increasingly computationally expensive, and by the end of the cascade we have a small candidate set remaining to use with our most powerful test, a top-down graph matching algorithm. We apply the proposed approach on the challenging public dataset including 33 object categories, and achieve state-of-the-art performance. (C) 2012 Elsevier Ltd. All rights reserved.

关键词： Clobazam   Captopril   Lactose   Drug-excipient compatibility   Solid state interaction   Differential scanning calorimetry (DSC)   DRUG-EXCIPIENT COMPATIBILITY   ALPHA-LACTOSE  

摘要： The thermal behaviour of binary mixtures of two drugs (clobazam and captopril, respectively) and a pharmaceutical excipient (lactose monohydrate) was measured with differential scanning calorimetry to determine thermodynamic and kinetic parameters (dehydration and melting enthalpies and dehydration and glass-transition activation energies) which might be affected by intermolecular interactions. A kinetic study showed that lactose dehydration is not a single-step conversion and that clobazam contributed to reduce the energy barrier for the bulk dehydration of the excipient. On the other hand, the physical interactions between metastable liquid clobazam and crystalline anhydrous alpha-lactose obtained from monohydrate dehydration gave rise to the recrystallisation of clobazam. In the captopril-lactose system, the liquid captopril influenced the lactose dehydration: a sharp increase of the dehydration enthalpy and a concurrent reduction of the dehydration temperature were observed. Finally, it turned out that solid-phase transitions were enhanced by the contact with a liquid phase. (C) 2012 Elsevier B.V. All rights reserved.

关键词： 危急值   检验科   医疗安全管理   临床医生   生命安全   检验项目   病情变化   干预措施  

摘要： 本院检验科每天要接收上千个标本,分析400多个检验项目,4 000多个检验测试.为临床提供有关患者诊断、治疗、病情变化等方面的大量信息.但在这些信息中”危急值”信息至关重要,对其处理的及时性与患者的生命安全密切相关.临床医生及时得到”危急值”信息,迅速给予患者有效的干预措施或治疗,就能挽救患者的生命；否则就有可能出现严重后果,失去最佳抢救时机［1-2］.

关键词： 检验   作用   预防   把关   改进  

摘要： 本文用一些普通的事例来验证检验在企业中的作用以及检验理论的正确性。

关键词： 食品安全检测   标准样品   分类  

摘要： 本文在《标准样品分类——标准样品分类的指南和关键词》国际最新的分类原则基础上,结合我国以往的分类体系,对食品安全检测标准样品进行了独立地、系统的分类,提出了一套适合我国国情的食品安全检测标准样品分类体系。