Defects Identification for Carbonization Bamboos Based on GLCM and SVM

针对碳化竹条瑕疵种类多,位置不确定且竹纹理干扰的问题,利用图像处理技术对竹条图像进行阈值分割,图像滤波等预处理,得到特征明显的图像,从而实现其表面瑕疵特征的识别。通过计算确定灰度共生矩阵的三个构造因子,提取了图像的三个纹理特征,采用一对一淘汰策略的多类SVM（support vector machine）学习模型进行分类识别竹条的瑕疵类型。实验结果表明,该方法对于碳化竹条的黑结、虫蛀、染色、霉点、裂痕等缺陷的正确识别率达到90.6%以上。In observation of realization of the surface flaw feature recognition, the bamboo original image was pretreated by image graying, Otsu threshold and mean filtering by taking into account of the effect from defects of carbonized bamboo and location uncertainties. Influences from various building factors on GLCM （gray level co-occurrence matrix） and its parameters were invetigated, and the method for establishment ofGLCM suitable for describing bamboo surface texture was presented. A class of SVM learning model with one to one replacement strategy was employed to classify and identify the defect types of bamboo. Result shows that the method can classify the five common types of the bamboo defects which includs black node, worm-hole, dyeing, mildew and crack with an accuracy higher than 90. 6%.福建省中青年教师教育科研项目（JA15364）;厦门市科技计划项目（3502Z20151241,3502Z20153021,3502Z20161186）;福建省科技厅对外合作项目（2017I1009

准公共产品的性质:定义、分类依据及其类别

有关准公共产品性质问题研究的深入或突破,是认识和缓解教育、医疗改革现实困难的一项基础性工作。准公共产品是介于公共产品与私人产品之间的、兼具部分公共产品和部分私人产品性质的某类产品。以产品消费的匀质性或非匀质性为依据,可将准公共产品划分为维持型如社会的公共设施、发展型如教育、经营型如医疗等三种类别。这种划分是有助于我们探讨不同类别的准公共产品最有效的供给方式

The Realization of Map Reduce-based DBSCAN Density-base Clustering Method

dbSCAn是一种简单、有效的基于密度的聚类算法,用于寻找被低密度区域分离的高密度区域。dbSCAn是最经常被使用、在科学文献中被引用最多的聚类算法之一。在数据维度比较高的情况下,dbSCAn的时间复杂度为O(n2)。然而,在现实世界中,数据集的大小已经增长到超大规模。对此,一个有效率的并行的dbSCAn算法被提出,并在MAP rEduCE平台下实现它。首先,对已经预处理过的数据进行划分。接下来,局部的dbSCAn算法将对每一块划分好的数据空间实现聚类。最终,利用合并算法对上一阶段的聚类结果进行合并。实验结果验证了并行算法的有效性。DBSCAN is an effective density-based clustering method which is designed to find high-density regions which are sep-arated by low-density regions.DBSCAN is one of the most common clustering algorithms and also most cited in scientific litera-ture.In the case of the data of high dimension, the computation complexity of DBSCAN is O(n2).However, it is challenging due tothe size of datasets has been growing rapidly to extra-large scale in the real world.In this paper, an efficient parallel density-based clustering algorithm is proposed and implemented by using Map Reduce.Furthermore, we adopt a quick partitioning strate-gy for data which has been preprocessed is adopted.Then, Local DBSCAN process for each subspace divided by the partition pro-file is implemented to generate clusters.At last, the clusters which are generated in the previous phase are merged

Solid-State Electrochemiluminescence on Tris(2,2′-bipyridine) ruthenium(Ⅱ) Modified Electrode

由于电致化学发光(ECL)的连续可测性、高灵敏度、稳定和方法简单,被广泛应用于分子生物学、药学、化学和环保等领域。而将可电化学再生的ECL试剂固定于电极表面,可获得ECL传感器,从而减少分析过程中试剂的消耗并简化实验装置。联吡啶钌及其衍生物在电极表面的固定化研究成为ECL研究的重要方向。本文综述了2004年以来联吡啶钌及其衍生物修饰电极的固相ECL的研究进展,并简要介绍了各种固定方法及其相关的应用情况。Electrochemiluminescence(ECL) has been widely used in biological,pharmic,chemical and environmental applications due to its continuance,sensitivity,reproducibility and relative easy to control.The ECL sensor can be assembled by immobilizing electrochemically reproducible ECL reagents on an electrode surface.This approach will reduce the reagents consuming and simplify the detection apparatus.Recently,the studies on the immobilization of tris(2,2′-bipyridine)ruthenium(Ⅱ) [Ru(bpy)_3~(2+)] and its derivations have becoming an attractive research field.This review summaries the solid-state ECL development of Ru(bpy)_3~(2+) and its derivations since 2004.The approaches for reagent immobilizations as well as the related applications are also discussed.教育部新世纪人才奖励计划;; 福建省科技项目(No.2005-I-030)资

Analysis on 6 Cases of Adverse Drug Reactions Induced by Ammonium Chloride and Licoricl Oral Solution

目的：探讨氯化铵甘草口服溶液不良反应的特点,为临床安全用药提供参考。方法：对本院2014年1月-2016年3月上报的6例氯化铵甘草口服溶液不良反应监测报告进行回顾性分析,对6例患者的年龄、性别、原患疾病,药物使用情况,ADR发生时间、临床表现、治疗与转归,ADR的类型与关联性评价等项目进行统计分析。结果：氯化铵甘草口服溶液不良反应多发生于老年患者;发生时间主要在用药8h内;以累及系统呼吸系统和皮肤为主;6例患者均痊愈,未出现后遗症或导致死亡。6例ADR中一般的ADR 2例,新的一般的ADR 2例,新的严重ADR 2例;关联性评价为可能4例,很可能2例。结论：临床上应重视氯化铵甘草口服溶液的不良反应,应密切观察患者,保证用药安全。Objective： To explore the characteristics of the adverse drug reactions （ADRs） induced by ammonium chloride and licoricl oral solution, to provide the reference for clinical safe medication and prevent adverse reaction. Methods：Restrospectively analysis were used on the ADRs reports of 6 cases of ammonium chloride and licoricl oral solution form January 2014 to March 2016 in our hospital. The application of drug, the age and gender distribution of patients ,occurrence time of ADRs, clinical manifestations ; treatment and outcome ; types and relevance evaluation of ADRs were analyzed respectively. Results：ADRs were mostly happened in the senile patients 8h after the medication. The clinical manifestations were respiratory and skins. 6 patients were all recovered, no occurrence sequel or lead to death. There were 4 cases of new ADR ,4 cases of commom ADR and 2 cases of severe ADR, 4 cases of possible relevance and 2 cases of probale relevance. Conclusion：The ADRs caused by ammonium chloride and licoricl oral solution should be pay more attention to, observed the changes closely to ensure clinical safe mediation

钛板骨内固定系统在颌骨骨折中的应用研究

目的 :通过动物实验及临床研究评价钛板颌骨内固定系统的临床应用效果。方法 :实验测试了内固定系统的机械性能和组织反应性。临床对 167例颌骨骨折病例应用钛板颌骨内固定治疗 ,观察咬牙合关系、咀嚼功能、开口度、面部畸形等恢复情况。结果 :微型接骨板桡曲强度偏低、钛板、钛钉表面耐磨性差。 167例临床病例治疗效果可靠。结论 :该固定系统设计合理 ,应用于颌骨骨折的治疗疗效可

LED fluorescent lamp driver power with power factor correction

文中提出了一种带功率因数校正的lEd日光灯驱动电源,该电源具有电路简单、可靠的优点,实测数据表明,在较宽电压范围内,驱动电源工作稳定,其具有较高功率因数.This paper introduce a LED fluorescent lamp driver power with power factor correction,the power supply circuit has the advantages of simple,reliable,and the measured data show that in a wider voltage range,the drive power can work stably,and the power factor is higher

Advance of stir bar sorptive extraction

作为一种新型的环境友好型样品前处理技术,搅拌棒固相萃取(SbSE)集萃取、净化和富集为一体,已经在环境监测、食品安全和生物分析等领域进行了广泛应用。本文结合作者所在研究小组的研究工作,对近几年来SbSE技术的发展进行综述,重点阐述了各种新涂层的研究和应用,同时就SbSE发展方向提出了展望。Stir bar sorptive extraction(SBSE) is an environmentally-friendly technology of sample preparation which combines extraction,cleanup and enrichment together,and it has been developed rapidly and widely applied to the trace enrichment of various target analytes in environmental,food and biological samples.Based on our research,the advance of SBSE,especially,the development of new coatings,are review ed.At the same time,the possible development orientations of SBSE are discussed.国家自然科学基金项目(21077085);福建省自然科学基金项目(2010J01047

不同脂肪源对异育银鲫的生长、体组成和肌肉脂肪酸的影响

配制了十种等氮等能的饲料饲喂3.53 g的异育银鲫幼鱼12周,探讨异育银鲫对不同脂肪源的利用效果。十种饲料中分别添加8%的鱼油(FO)、椰子油(CNO)、玉米油(CO)、亚麻油(LO)、大豆油(SO)、菜籽油(RO)、1∶1鱼油-椰子油(FCNO)、1∶1鱼油-玉米油(FCO)、1∶1鱼油-亚麻油(FLO)和1∶1∶1∶1鱼油-椰子油-玉米油-亚麻油混合油(MIX)。每组饲料三个平行,每个平行30尾。实验在循环水养殖系统中进行,水温控制在(24±1)℃。结果表明,在单一脂肪源中,豆油组和椰子油组的增重率最高,其次是菜籽油组,鱼油、玉米油和亚麻油组的增重率最低。与相应的单一脂肪源相比,饲料中鱼油与椰子油、玉米油或亚麻油1∶1混合后使用提高了异育银鲫的生长。摄食不同脂肪源饲料的异育银鲫血清生化指标、各组织的水分和脂肪含量差异不明显(P>0.05)。肌肉脂肪酸与饲料脂肪源呈明显正相关。摄食豆油和菜籽油饲料的鱼体肌肉中20:4n-6较高,而摄食亚麻油饲料的鱼则含有较高的20:5n-3和22:6n-3,表明异育银鲫具有转化18:2n-6和18:3n-3为高不饱和脂肪酸的能力。从实验可以看出,豆油、椰子油和菜籽油是异育银鲫饲料中良好的脂肪源