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关键词： 国际危规   聚合物质   危险性分类   包装容器  

摘要： 介绍了目前最新版国际危规中新增的几个聚合物质条目,对其危险性分类与所需的包装要求进行了解读,得出6条指导意见,有利于聚合物质的安全运输。

关键词： 血液检验   贫血   鉴别诊断  

摘要： 目的分析血液检验在贫血鉴别诊断中的作用。方法选取我院收治的缺铁性贫血患者40例,设其为研究组;选取同期的地中海性贫血患者40例,设其为对照组。检验并对比两组血液检验指标。结果研究组在平均红细胞体积、红细胞分布宽度的检测结果上低于对照组,在平均红细胞血红蛋白量、平均血红蛋白浓度、红细胞计数、血红蛋白含量上高于对照组,差异有统计学意义(P<0.05)。结论临床可以通过血液检验,分析相关指标测定结果的差异来实现对缺铁性贫血、地中海性贫血等贫血类型的鉴别,进而采取相应的措施进行有效的治疗。

关键词： 痕迹检验   侦察破案   证据  

摘要： 在侦察与反侦察的较量之中,罪犯的作案水平与技能在逐渐提高,但是仍然会留下一些痕迹。因此开展痕迹检验鉴定将有助于充分了解犯罪现场,挖掘出犯罪信息,对于侦察破案非常重要。在文中就痕迹检验鉴定在侦察破案中的证据作用进行探讨,以期司法诉讼提供更大的支持,让司法公正得以彰显。

关键词： 侦查工作   作用   文件检验   破案  

摘要： 侦查工作在公安系统中是非常重要的一项工作,而侦查破案中文件检验又是重要的破案手段,尤其在刑事犯罪案件的破获上作用更加明显,其他侦查手段无法与其相提并论,它不光能为警方提供有力的侦查证据,还可以明确指出正确的侦查方向,指定正确的犯罪嫌疑人。本文首先分析文件检验的具体概念,进一步阐述在实际的侦查中所起到的作用,以便于大家参考借鉴。

关键词： 检验科   质量管理   教学  

摘要： 通过对比经实验室医学实验室ISO15189认可前后检验诊断学实习生在检验操作技能、质量管理体系知识、质量活动及质量意识各方面变化。参与ISO15189认可活动的学生,在质量意识及操作规范性显著提升,特别熟悉质量管理的流程及方法,培养及建立了良好的质量及规范性意识。

摘要： A single transcranial magnetic stimulation (TMS) pulse to the motor cortex evoked a series of corticospinal volleys known as direct (D) and indirect (I) waves. This talk will discuss methods to assess D and I waves, how they are altered by afferent input and potential clinical implications. TMS with induced current in the posterior-anterior (PA) direction preferentially evokes early (I1) wave whereas anterior-posterior (AP) TMS preferentially evokes late (I3) waves. The interaction between I-waves can be studied with a paired pulse TMS paradigm known as short-interval intracortical facilitation (SICF), with peak facilitations at ∼ 1.5, 3.0 and 4.5 ms that correspond to interactions between different I-waves. Afferent input, such as median nerve stimulation, inhibits the motor cortex at about 20 ms, known as short-latency afferent inhibition (SAI). SAI is mediated by acetylcholine and GABA, is altered in Alzheimer's and Parkinson's disease and predominately inhibit late I-waves evoked in the PA direction. Unexpectedly, it was found that SAI was greater with TMS in the PA compared to the AP direction. Single motor unit poststimulus time histogram recordings confirmed that the AP TMS preferentially evoked late I-waves, and late I-waves from PA TMS were inhibited by SAI whereas late I-waves from AP TMS were not. These findings suggest that late I-waves generated by AP and PA current are mediated by different circuits. The interactions between SAI and SICF were also investigated. Contrary to expectation, SICF elicited by both AP and PA current directions was facilitated in the presence of SAI. These results are compatible with the finding that projections from sensory to motor cortex terminate in both superficial layers where late I-waves are thought to originate, as well as deeper layers with more direct effect on pyramidal output. This interaction is likely to be relevant to sensorimotor integration and motor control.

关键词： urban built-up areas   sample-optimized approach   SVM classification   DMSP-OLS   initial training samples   GlobeLand30   NDVI   probability threshold   iterative optimization process   NIGHTTIME LIGHT IMAGERY   URBANIZATION DYNAMICS   COVER CLASSIFICATION   EXPANSION   CHINA   SCALES   FUSION   GROWTH   EXTENT   GIS  

摘要： The accuracy of training samples used for data classification methods, such as support vector machines (SVMs), has had a considerable positive impact on the results of urban area extractions. To improve the accuracy of urban built-up area extractions, this paper presents a sample-optimized approach for classifying urban area data using a combination of the Defense Meteorological Satellite Program-Operational Linescan System (DMSP-OLS) for nighttime light data, Landsat images, and GlobeLand30, which is a 30-m global land cover data product. The proposed approach consists of three main components: (1) initial sample generation and data classification into built-up and non-urban built-up areas based on the maximum and minimum intervals of digital numbers from the DMSP-OLS data, respectively; (2) refined sample selection and optimization by the probability threshold of each pixel based on vegetation-cover, using the Landsat-derived normalized differential vegetation index (NDVI) and artificial surfaces extracted from the GlobeLand30 product as the constraints; (3) iterative classification and urban built-up area data extraction using the relationship between these three aspects of data collection together with the training sets. Experiments were conducted for several cities in western China using this proposed approach for the extraction of built-up areas, which were classified using urban construction statistical yearbooks and Landsat images and were compared with data obtained from traditional data collection methods, such as the threshold dichotomy method and the improved neighborhood focal statistics method. An analysis of the empirical results indicated that (1) the sample training process was improved using the proposed method, and the overall accuracy (OA) increased from 89% to 96% for both the optimized and non-optimized sample selection; (2) the proposed method had a relative error of less than 10%, as calculated by an accuracy assessment; (3) the overall and i

关键词： Structural dynamics   Three-dimensional analysis   Nonlinear analysis   Soil liquefaction   Soft soils   Soil-structure interactions   Surface waves   Underground structure   STRONG MOTIONS   GROUND MOTION   TOKYO BAY   EARTHQUAKE   JAPAN  

摘要： This paper proposes three-dimensional (3D) simplified nonlinear methods for examining the soil-building interaction for nonlinear behavior of soils based on an input seismic wave field. A seismic wave field is defined as seismic waves propagating in a 3D medium. The proposed 3D methods were developed on the basis of the 3D linear method, which was recently proposed to adequately treat seismic surface waves trapped by a several-kilometer-deep underground structure. To demonstrate the feasibility of the proposed methods, interaction analyses of a midrise RC building and a wood building were performed in the reclaimed zone of Tokyo Bay in the cases of soils with linear, nonlinear, and liquefaction behavior for the 1923 Kanto earthquake. These interaction analyses provide a reasonable evaluation of building performance. In particular, building responses became excessively large, following extremely large increases in the amplitudes of surface waves in liquefied soils. The building responses provide significant clues for interpreting a typical damage pattern in which Japanese RC building damage is concentrated on the first story.

关键词： Medical students   Narrative   Positioning   Qualitative   Simulated patients  

摘要： In their journey to becoming doctors, students engage with a range of teachers and trainers. Among these are simulated patients (SPs), who, through role-playing, assist students to develop their communication and physical examination skills, in contexts of formative and summative assessments. This paper explores the teaching and learning relationship between medical students and SPs, and considers how this might affect feedback and assessment. 14 SPs were interviewed on the subject of medical students' professional identity development in 2014. Data were examined using narrative analysis in conjunction with positioning theory to identify the positions that SPs assigned to themselves and to students. Narrative analysis yielded three interpretative positioning themes: Occupational, familial and cultural and discursive and embodied positioning. The interview process revealed that SPs adopt different positions intra-and interpersonally. SPs appear to hold dissonant perceptions of students in terms relating to their emerging professional identities, which may confound assessment and feedback. Training should include reflections on the SP/student relationship to uncover potential biases and positions, giving SPs the opportunity to reflect on and manage their individual and occupational selves.

关键词： cepstrum   cepstral analysis   cepstral peak prominence   Statistical Process Control   intermittent dysphonia   CEPSTRAL PEAK PROMINENCE   BREATHY VOCAL QUALITY   TERM AVERAGE SPECTRUM   CONTINUOUS SPEECH   SPASMODIC DYSPHONIA   CAPE-V   SEVERITY   INDEX   DISORDERS   DIAGNOSIS  

摘要： Objectives. Intermittent dysphonia within an utterance is common, but presents difficulty for both perceptual and objective voice evaluation. This study examined the ability of measures from the within-sample cepstral peak prominence (CPP) distribution to differentiate normal voices from intermittently and consistently dysphonic voices. Study Design. Exploratory design. Methods. Sixty samples of the sentence "We were away a year ago" were classified as normal, intermittently dysphonic, or consistently dysphonic by four judges. Measures of CPP within each sample were obtained, and further analysis with examined CPP distribution variability and patterns of CPP outliers. Results. Whereas the mean CPP was the strongest single discriminator among the three voice types, the normal and intermittent dysphonia groups were not significantly different on CPP distribution skewness and measures of CPP distribution outliers. Both the normal and intermittently dysphonic voices differed significantly from the consistently dysphonic samples on these variables. A combination of measures of the CPP distribution was effective for a linear prediction of percent dysphonia duration for the speech samples (r = 0.825; rho = 0.81). The CPP standard deviation significantly improved the use of the mean CPP in discriminant function analyses and also the classification of the intermittently dysphonic voices. Conclusions. Auditory-perceptual judgment of dysphonic segments and the typically robust acoustic measurement of mean CPP are both ineffective for classifying intermittently dysphonic voices. However, dysphonia duration may be effectively predicted via measures of the CPP distribution, and acoustic classification of dysphonic voice types via cepstral methods may be improved with an analysis of the CPP distribution across an utterance.