Histology image analysis for carcinoma detection and grading

This paper presents an overview of the image analysis techniques in the domain of histopathology, specifically, for the objective of automated carcinoma detection and classification. As in other biomedical imaging areas such as radiology, many computer assisted diagnosis (CAD) systems have been implemented to aid histopathologists and clinicians in cancer diagnosis and research, which have been attempted to significantly reduce the labor and subjectivity of traditional manual intervention with histology images. The task of automated histology image analysis is usually not simple due to the unique characteristics of histology imaging, including the variability in image preparation techniques, clinical interpretation protocols, and the complex structures and very large size of the images themselves. In this paper we discuss those characteristics, provide relevant background information about slide preparation and interpretation, and review the application of digital image processing techniques to the field of histology image analysis. In particular, emphasis is given to state-of-the-art image segmentation methods for feature extraction and disease classification. Four major carcinomas of cervix, prostate, breast, and lung are selected to illustrate the functions and capabilities of existing CAD systems.     

无线应变仪及对其管理控制的C 程序设计

在高速转动、移动及野外等场所,需要对物体的一些物理参数进行测量,采用无线传输技术制作高精度应变仪,它克服了传统的感应式和集流环传输的应变仪一系列问题。该方法特别适合用于石油钻井矿井及其他大型机电一体化改造。 安装在移动物体中的发射电路部件由传感器(应变片)、非线性校正电路(TL431)、放大电路(INA114)、电压-频率转换电路(LM331)和发射模块(TW630)组成。接收处理部件由接收     

适用于智能仪表的串行总线单片机应用系统

本文介绍了以串行总线为核心的单片机应用系统,与传统的单片机应用系统相比,结构简洁,紧凑,大大减少了总线数量,只占用较少ＣＰＵ资源,缩小印制板尺寸,可靠性高,特别适合于智有化仪表等领域的使用。     

TP304H/SA213T22异种钢焊口的状态检测与寿命评估

综合应用各种方法对TP304H／SA213T22高温再热器异种钢焊口进行了状态检测与寿命评估,结果认为取样管异种钢焊口已至寿命末期。据此该厂于2004年4月大修中有计划地对高温再热器管的异种钢焊口进行了全面改造,将此焊口安排到炉顶温度较低的部位,避免了泄漏发生后的大面积换管。     

双圆盘空化器射弹通气超空泡形态特性实验研究

基于空泡截面独立扩张原理,提出了一种应用于水下射弹的双圆盘空化器。并在高速循环水洞中对此系列双圆盘空化器的空泡生成特性和形态特性进行实验研究。实验通过改变通气流量系数,观察了不同锥顶角下的通气超空泡形态。实验表明,此系列双圆盘空化器诱导生成的通气超空泡存在前盘优先和后盘优先2种空化状态,二者的过渡发生在锥顶角55°附近;生成稳定通气超空泡的临界通气流量系数值与锥顶角呈正相关趋势,前盘和后盘对空泡生成具有相互抑制作用;且通气超空泡的形态特征量不随通气流量系数增加而持续增加,而是存在一个通气流量系数上限值。     

生猪屠宰企业生产废水处理工程实例

针对屠宰废水有机物高、悬浮物高、水量不均的特点,采用SBR+一体化净水器的处理工艺,COD、SS和油脂的去除率分别为95.7%、95.5%、50%,出水水质达到一级排放标准.工程总投资为25万元.水处理运行费用为1.2元/m3.本工程的特点是:工艺管理简单,控制参数少,切合实际.     

烯基琥珀酸酐表面改性淀粉膜羟基取代度的影响因素

以十二烯基琥珀酸酐和辛烯基琥珀酸酐为酯化剂对淀粉膜进行表面改性,通过正交试验研究了各种因素对淀粉膜表面羟基取代度的综合影响。结果表明,用十二烯基琥珀酸酐表面改性时,影响羟基取代度的最重要因素是酸酐稀释倍数;用辛烯基琥珀酸酐改性时,影响羟基取代度的最主要的因素是平衡环境的湿度;将十二烯基琥珀酸酐和辛烯基琥珀酸酐按不同的比例混合起来对淀粉膜表面改性,影响其羟基取代度的最主要因素是碱溶液质量分数。     

Ascorbic acid: a review of its chemistry and reactivity in relation to a wine environment

Extensive reviews of research are available on the use of ascorbic acid, and its consequent degradation pathways, in physiological conditions or food matrices. However, very little information can be found for wine-related systems. This review highlights the relevant chemistry and reactivity of ascorbic acid with a focus on its behavior and potential behavior in a wine environment. The review describes the use of ascorbic acid as a complementary antioxidant preservative to sulfur dioxide along with the metal-catalyzed and radical-dependent manner by which it achieves this role. The relevant degradation products of ascorbic acid in aerobic and anaerobic conditions are presented as well as the interaction of these degradation products with sulfur dioxide and other wine-relevant sulfur compounds. Limitations in existing knowledge, especially regarding the crossover between the antioxidant and pro-oxidant roles of ascorbic acid, are identified.