The Method of Separation of Tongue Coating and Tongue Texture in the Process of Tongue Diagnosis Informatization

应用计算机分析舌像,在舌像信息辅助下推断中医证型的过程中,实现舌质、舌苔区域的自动化分离是前提条件,分离结果直接影响到后续舌质、舌苔颜色分类识别的质量,最终影响证型推断的准确性。在质苔分离实验中采用两种方法,即基于HSV色彩空间的最佳阈值迭代算法和基于彩色特征组合的分割方法,根据两者各自特点,综合叠加运用这两种方法,有效的解决质苔分离问题。The separation of the coating and the texture of the tongue is crucial and prerequisite for the TCM-diagnosing from the information of the tongue which derived from the analysis of the tongue picture with the computer. The qualify of the separation will directly affect the classification and recognition of the color of the tongue coating and tongue texture in the following step, at last, the accuracy of syndrome differentiation. Hence, this article concentrates on analysis of the automatic separation of coating and the texture of the tongue. Two methods are comprehensive applied in the separation,first is Optimal Threshold Iterated Algorithm based on HSV color space, and second is based on the color characteristics.Through comprehensive use of the two methods according to their own characteristics, we achieve the purpose of the perfect separation.国家自然科学基金(编号:60601025);; 卫生部联合基金(编号:WKJ2005-2-001);; 厦门市科技计划(编号:3502Z20055003

Collision Detection for Virtual Surgery Planning System of Nasopharyngeal Carcinoma

针对鼻咽部及其周围组织的特点,着重论述了一种基于包围盒层次的碰撞检测算法。该方法是解决碰撞检测问题固有时间复杂性的一种有效方法,是用体积略大而几何特征简单的包围盒来近似描述复杂的几何对象,并通过构造树状层次结构来逼近对象的几何模型。在对包围盒树进行遍历过程中,通过包围盒间的快速相交检测来及早排除明显不可能相交的基本几何元素对,从而提高了碰撞检测速度。Focusing on the features of nasopharynx and peripheral tissues, this paper mainly states an algorithm of collision detection based on bounding box hierarchies. It is an effective method to solve the intrinsic time complexity of collision detection problem, which refers to take advantage of bounding box with larger volume and simple geometric features to approximately describe the complicated geometric object and approach the geometric model of object through constructing the tree hierarchy structure. During the ergodic process of hierarchy bounding volumes, the rapid intersec- tion detection among bounding boxes could exclude the elementary geometric element pairs at early time that are obvi- ously impossible to intersect, so as to elevate the speed of collision detection.卫生部联合基金项目(WKJ2005-2-001);; 福建省科技重点项目(2004Y008)~

Deform Analysis on Fixture for Peripheral Grinding of Indexable Inserts

在高速精密磨削可转位刀片周边时,由于采用双顶尖油压夹紧刀片,再通过在刀片上产生的摩擦力和油压力来约束刀片的6个运动自由度,造成夹具结构刚性相对薄弱。为此,针对极限夹紧工况时夹具的受力变形进行了分析,通过结构改进与误差补偿,提高了夹具定位精度和磨削加工的可靠性。In high speed precision grinding the peripheral of indexable inserts,due to the double chucks clamping the blade by the oil pressure,and through the friction and the oil pressure produced in the blade to restrain the insert'six movement degrees,all these w ill make the fixture structure rigid become relatively w eak.Therefore,the paper analyses the fixture deformation in the limit w orking condition,and improves the accuracy of the fixture location and the reliability of the grinding process through the structure improvement and error compesation.国家国家科技重大专项(2010ZX04001-162

Structure Analysis and Optimization for 5-axis CNC Grinder Bed

在AnSyS软件平台上建立五轴数控磨床有限元模型,对其床身结构进行静、动态特性分析与优化,通过对比提出两种优化方案,分析结果表明:综合改进后的床身相比原床身在静态特性上得到极大提高,且动态特性也有相应的增强。Finite element model of 5-axis CNC grinder bed was built on ANSYS software platform.The two optimal schemes for the bed structure were extracted on the basis of static and dynamic analyses and optimization.Comprehensive analysis shows that the static performance of the improved bed has been greatly enhanced and the dynamic performance has been correspondingly strengthened than original bed.国家科技重大专项资助项目(2010ZX04001-162

Effects of Sulfur and pH on Photohydrogen Production of the Green Alga Chlorella pyrenoidosa

在有无硫及pH5.0-8.0下对蛋白核小球藻(Chlorella pyrenoidosa)光照产氢的影响进行了研究。结果表明,在持续光照(165μmolm-2s-1)条件下,从有硫培养液(TAP培养液)内叶绿素a含量、Fv/Fm值及ΦPSII值的变化表明蛋白核小球藻在pH6.0-7.0时生长最佳,生长旺盛易形成暂时的无氧环境而利于藻产氢。最高的产氢速率和总产氢量出现在pH7.0,分别是0.10mlmg-1chlh-1和1.39ml。从无硫培养液(TAP-S培养液)内叶绿素a含量、Fv/Fm值及ΦPSII值的变化表明蛋白核小球藻生长明显受抑制,形成的无氧环境持久,故产氢持久,总产氢量比有硫培养液内高。蛋白核小球藻在pH5.5培养液内的Fv/Fm值后期高于其他4种pH值的,表明潜在的PSII光化学效率高,在光照条件下产氢电子主要来源于PSII,故pH5.5的无硫培养液内藻的产氢速率和总产氢量最大,分别是0.58mlmg-1chlh-1和10.98ml。说明pH为5.5的无硫培养液是蛋白核小球藻产氢的最佳条件。The effects of sulfur and pH(5.0-8.0) on photohydrogen production was investigated in a unicellular green alga, Chlorella pyrenoidosa. Under continuous illumination of 165 μmol m-2s-1 conditions, in the TAP culture medium, changes of chlorophyll a content、Fv/Fm and ΦPSII indicated that growth of C. pyrenoidosa were very well at initialcultivation pH ranged from 6.0 to 7.0 and can form a temporary anoxic conditions in favor of H2 production. Maximum H2 production was obtained at initial cultivation pH 7.0 by C. pyrenoidosa. The maximum rate of H2 produced by C. pyrenoidosa was 0.10 ml mg-1 chl h-1 and the maximum total yield of H2 produced was 1.39 ml. In TAP-S culture medium, changes of chlorophyll a content、Fv/Fm and ΦPSII indicated that growth of C. pyrenoidosa were inhibited and can form a permanent anoxic conditions in favor of H2 production. The total yield of H2 production by C. pyrenoidosa in TAP-S culture was more than that in TAP culture. The Fv/Fm value of C. pyrenoidosa in pH 5.5 TAP-S culture was higher than the others culture. It indicated the residual PSII was more than the others. Under continuous illumination the electron of production H2 requirement mostly comes from PSII, so the maximum rate and total yield of H2 produced by C. pyrenoidosa appeared in pH 5.5 TAP-S cultures. The maximum rate of H2 produced by C. pyrenoidosa was 0.58 ml mg-1 chl h-1 and the total yield of H2 produced was 10.98 ml. The H2 production of C. pyrenoidosa was notable effected by sulfur and pH. In this test the best conditions for H2 production of C. pyrenoidosa was in pH 5.5 TAP-S cultures.广东省科技攻关项目(2004B33401002);; 国家“863”计划项目(2002AA515030)资

Structural analysis and lightweight study for the five-axis grinder bed

以五轴联动工具磨床的床身为研究对象,分析了磨床在极限位置使用情况下床身的静态特性,找到了床身变形最大区域。通过自由模态分析和约束模态分析,得到床身各阶模态的振动特点,并从最大变形区域中选取一点进行谐响应分析,预测床身的持续动力特性。根据分析结果,找出薄弱环节,在保证床身动静态特性不降低的基础上对床身进行轻量化研究,最终减重7.73%,节省了材料与成本。With the five-axis grinding machine tool bed as the research object, the maximum deformation region can be found after analyzing the static characteristics in the use of the grinder limit positions.Through free modal and constraint modal analysis, the vibration characteristics of each order of the bed can be seen and a point in the maximum deformation region is selected to carry out the harmonic response analysis to predict the sustainable dynamic characteristic.According to the results of analysis, find out the weak areas in the bed and conduct the lightweight optimization on the condition of no reduction of static and dynamic characteristic of the bed.And finally, it reduces 7.73% of materials and prime costs.数控国家科技重大专项(2010ZX04001-162

家兎を用いた自家腱による膝半月板部分再建術—骨孔位置の差異による比較検討—

稀ではあるが急性虫垂炎にムンプスやインフルエンザといった伝染性感染症を併発し，対処に苦慮することがある．今回われわれは混合感染が虫垂炎の重症化に与える影響について後方視的に検討した．2005年1月から2015年12月までに当院で手術を行った小児急性虫垂炎症例274例のうち，待機的虫垂切除7例を除く267例を対象とした．重症化の指標として虫垂穿孔，入院期間延長（＞7日），術後合併症（創感染，術後イレウス，遺残膿瘍のいずれか）を掲げ，性別，年齢，body mass index（BMI），糞石の有無，術前CRP値，術前白血球数（WBC）および伝染性感染症の有無の影響について統計学的に検討した．267例中，6例（2.3％）に混合感染が確認され，その内訳はインフルエンザ4例，溶連菌感染1例，ムンプス1例であった．混合感染6例中，虫垂穿孔は4例，糞石は4例，術後合併症は2例に認めた．混合感染群では感染症非合併（対照）群と比べて有意に穿孔の率が高かったが（66.6％ vs. 21.5％；odds ratio 7.32；95％ CI 1.31–41.01，p＝0.0243），性別，年齢，BMI，WBC，CRP値，糞石，入院期間，術後合併症率には有意差を認めなかった．対照群における重症化リスク因子の分析では年齢（≦5歳），糞石，CRP値（≧5.0mg/dl）に有意差を認めた（p＜0.05）．当院における虫垂炎の治療結果では諸報告と同様，低年齢，CRP高値，糞石が主な重症化因子であった．伝染性感染症の併存は穿孔の頻度を上げたが，入院期間や術後合併症の頻度には影響しなかった．これは診断に大きな遅れがなく，適正な外科介入がなされたものと推測した．混合感染群における糞石の頻度は対照群と比較して有意差がなく，伝染性感染症が虫垂炎の直接的な原因であることを示す間接的な証拠は認めなかった．伝染性感染症と急性虫垂炎の間に因果関係はなく，これらは独立事象と考えられる．伝染性感染症を合併する小児急性虫垂炎において，通常の外科介入がなされる限り，虫垂炎の経過が受ける感染症の影響は僅かなものである

Investigation on the Floor Heating System with Thick Hot Water Panels

departmental bulletin pape