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2009 3rd International Conference on Bioinformatics and Biomedical Engineering最新文献

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Chemical Entrapment of Divalent Lead By Ettringite 钙矾石对二价铅的化学捕集
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5162499
Jun-kang Lan, K. Ding, Meng Wu, Baojian Liu
This work aims to make clear whether Pb(II) can be chemically entrapped by ettringite and find out under what conditions this entrapment can take place. In experiment condition, several chemical analytical reagents were used to synthesize the lead analog of ettringite {Pb6[Al(OH)6]2ldr3SO4ldr26H2O}, Ca-Pb ettringite {(Ca,Pb)6 [Al(OH)6]2ldr3SO4ldr26H2O} and plumbite ettringite {3CaOldr Al2O3ldr3CaPbO2ldr31H2O}. The results showed that the lead analog of ettringite and the plumibte ettringite couldn't be synthesized, while Ca-Pb ettringite could be made. This indicated that Pb(II) couldn't be chemically entrapped by ettringite when divalent calcium or sulfate was absent in liquid phase. However, Pb(II) could entrapped into ettringite lattice when calcium ions existed in liquid phase to formed Ca-Pb ettringite. The X-ray diffraction patterns of Ca-Pb ettringite were significantly different from that of Ca-ettringite, indicating that ettringite' lattice been varied after accommodating divalent lead. Experiments on Pb(II) solidified by 100% type I clinker showed that the XRD patterns of the paste at 7-day storage period changed after they doped divalent lead, These further confirmed that Pb(II) could be entrapped into cement minerals including ettringite.
这项工作的目的是弄清楚铅(II)是否可以被钙矾石化学包裹,并找出在什么条件下可以发生这种包裹。在实验条件下,利用几种化学分析试剂合成了钙矾石{Pb6[Al(OH)6]2ldr3SO4ldr26H2O}、钙铅钙矾石{(Ca,Pb)6 [Al(OH)6]2ldr3SO4ldr26H2O}和铅铅矿钙矾石{3CaOldr Al2O3ldr3CaPbO2ldr31H2O}的铅模拟物。结果表明,铅钙矾石和铅铅钙矾石的类似物无法合成,而钙铅钙矾石是可以制备的。说明在液相中不存在二价钙或硫酸盐时,钙矾石不能对Pb(II)进行化学包埋。而当钙离子存在于液相中时,Pb(II)会被困在钙矾石晶格中形成钙-Pb钙矾石。钙铅钙矾石的x射线衍射图与钙钙矾石的x射线衍射图有显著差异,说明钙钙矾石的晶格在加入二价铅后发生了变化。对100% I型熟料固化Pb(II)的实验表明,掺入二价铅后,膏体在贮存7 d后的XRD谱图发生了变化,这进一步证实了Pb(II)可以被钙矾石等水泥矿物包裹。
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引用次数: 1
How Does Emotional Intelligence Regulate Emotional Exhaustion? the Mediating Role of Work Stress 情商如何调节情绪耗竭?工作压力的中介作用
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5162906
Xiao‐Yu Liu, Kai Zhang
This study explores the mechanism of how emotional intelligence regulates emotional exhaustion based on the questionnaire survey of 387 Chinese employees. The results show that emotional intelligence is negatively related to perceived work stress and emotional exhaustion, and that work stress fully mediates the relationship between emotional intelligence and emotional exhaustion. Theoretical and practical implications of this study for psychological health and emotion research are discussed.
本研究通过对387名中国员工的问卷调查,探讨了情绪智力对情绪耗竭的调节机制。结果表明,情绪智力与感知工作压力和情绪耗竭呈负相关,工作压力在情绪智力与情绪耗竭的关系中起完全中介作用。讨论了本研究对心理健康和情绪研究的理论和实践意义。
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引用次数: 2
Study on the Blending Solution Behavior and Membrane Properties of Sodium Alginate and Chitosan 海藻酸钠与壳聚糖共混溶液行为及膜性能研究
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5163504
Xin Meng, F. Tian, Jian Yang, Fan Li
The rheological behavior of chitosan, sodium alginate and their blends at several composition (2/8, 4/6, 5/5, 6/4, 8/2 ) has been studied. The chitosan-alginate complex films have been prepared here by blending. Intermolecular interactions in chitosan-alginate complex films have been examined by Fourier transform infrared spectroscopy (FT-IR), viscometry, mechanical measurements. It was found that the -OH , the -NH2 groups, and the amideⅠ ,Ⅱ and Ⅲ characteristic absorption bands in FT-IR spectra of chitosan and algiante blends were shifted. The films exhibit different mechanical properties depending upon the ratio between two polysaccharides which take opposite charges. The mechanical measurements of films and some physical property results showed that intermolecular interactions varied with different chitosan content. Blending of chitosan and alginate may give the possibility of producing new materials for potential biomedical applications.
研究了壳聚糖、海藻酸钠及其共混物在不同组成(2/ 8,4 / 6,5 / 5,6 / 4,8 /2)下的流变性能。通过共混法制备了壳聚糖-海藻酸盐络合膜。壳聚糖-海藻酸盐络合膜的分子间相互作用已通过傅里叶变换红外光谱(FT-IR)、粘度测定、力学测量进行了研究。发现壳聚糖和海藻酸盐共混物的红外光谱中-OH、-NH2基团和酰胺Ⅰ、Ⅱ和Ⅲ的特征吸收带发生了位移。薄膜表现出不同的机械性能取决于两种带相反电荷的多糖之间的比例。膜的力学性能和部分物理性能测试结果表明,壳聚糖含量不同,膜的分子间相互作用也不同。壳聚糖与海藻酸盐的共混为生物医学应用提供了新材料的可能性。
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引用次数: 5
Characteristics Study of Phase Separation on ABR Anaerobic Reactor ABR厌氧反应器相分离特性研究
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5162493
Xiaojian Xie, Dongwei Li
In this paper, Anaerobic Baffled Reactor (ABR) was applied to treat the synthetic wastewater in the matrix of starch and glucose. The process features and operation stability of anaerobic baffled reactor (ABR) were discussed. As well as the author investigated the implementation of ABR multi-phase separation. The experiment indicated that, under the conditions of 33~40degC room temperature and 0.59~11.05 kg COD/m 3 .d volume load, each compartment of ABR could successfully develop the microbial population that adapts to compartment environment. The effective separation was obtained with CODcr removal rate of above 90%, the reactor was stable in operation.
采用厌氧折流板反应器(ABR)处理淀粉和葡萄糖为基质的合成废水。讨论了厌氧折流板反应器(ABR)的工艺特点和运行稳定性。并对ABR多相分离的实现进行了研究。实验表明,在33~40℃的室温和0.59~11.05 kg COD/m 3 .d的体积负荷条件下,ABR各室均能成功培养出适应室环境的微生物种群。有效分离,CODcr去除率达90%以上,反应器运行稳定。
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引用次数: 0
Sintered Flue Gas Semidry Processing Desulphurization Ash As Cementing Materials 烧结烟气半干法处理脱硫灰分作为胶结材料
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5163404
Bin Gao, Ai-ling Ren, Jingxuan Gao, Zhi Fang, Tingyu Zhu
The aim of this work was to evaluate the use of sintering flue gas semidry desulphurization ash (SFGD ash) as cementing materials. The samples of ash came from circulating fluidized bed calcium-based sintering flue gas desulphurization system of 60 m 2 sintering machine. Based on the component of raw ash and modified ash (changed its component under fixed temperature), batches containing SFGDA ash , granulated blast-furnace slag (GBFS), steel slag, clinker and other admixture for cementing materials were prepared. Specimens were molded using hydraulic press, and their soundness, hydration properties, mechanical properties were determined, micrographs, durability including Acidoresistance, Sulfate resisting , Freeze-thaw resistance and dry shrinkage were studied in accordance with different conserving periods. The results indicate that the batches containing modified SFGD ash up to 20%, steel slag steel 11% to 44%, GBFS 12% to 44%, reducing water agent 0.5%, clinker 23% and CFII 1.5% by mass, meet the cement standard with steel slag and GBFS (GB13592-92, in China). The SFGD ash after modified, when mixed GBFS), steel slag, clinker and other admixture, has necessary requirement to be used as a raw material for production of cement. And the additive of shrinkage reducing agent or expansion admixture should be selected to put into the materials to improve the property in the future.
本研究的目的是评价烧结烟气半干法脱硫灰(SFGD灰)作为胶结材料的应用价值。灰分样品来自60m2烧结机循环流化床钙基烧结烟气脱硫系统。根据原灰分和改性灰分(在固定温度下改变其组分)的组成,制备了含SFGDA灰分、粒状高炉矿渣(GBFS)、钢渣、熟料等胶凝材料掺合料的批次。采用液压机对试件进行成型,测定试件的稳固性、水化性能、力学性能,并根据不同保存期对试件的显微形貌、耐酸性、抗硫酸盐性、抗冻融性、干收缩率等耐久性进行研究。结果表明,脱硫渣改性灰分掺量为20%,钢渣掺量为11% ~ 44%,GBFS掺量为12% ~ 44%,减水剂掺量为0.5%,熟料掺量为23%,CFII掺量为1.5%,达到钢渣加GBFS的水泥质量标准(国内GB13592-92)。经改性后的SFGD灰分,与GBFS、钢渣、熟料及其他外加剂混合后,有必要作为生产水泥的原料。今后应选择减缩剂或膨胀外加剂加入材料中,以提高材料的性能。
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引用次数: 1
Bio-Effects of Ultrasound: Inhibitory Effects on Ultrasound Induced Apoptosis by Cyclosporin A and Fructose Supplementation 超声的生物效应:环孢素A和果糖对超声诱导细胞凋亡的抑制作用
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5162443
Yi Feng, M. Wan
To reveal the potential molecular interaction between mitochondrial permeability transition (MPT) and ultrasound induced apoptosis, hepatocarcinoma cells, HepG2, were treated by low intensity focused ultrasound in this study. Cyclosporin A (CSA), a special inhibitor of MPT, were pre-incubated with cells before ultrasound treatment, as well as fructose and pyruvate, respectively. Cell viability was measured by trypan blue dye exclusion test. The apoptosis was assessed by phosphatidylserine externalization and DNA fragmentation. The pattern of the decrease in mitochondrial trans-membrane potential (DeltaPsi m ) was determined by flow cytometry. The optimal apoptosis with minimal lysis was attained with ultrasound at 5.0 W/cm 2 for 1 min. In addition, apoptotic cells increased with increasing incubation time post-treatment and peaked at about 12 h. CSA maintained DeltaPsi m and reduced ultrasound-induced apoptosis, indicating MPT as the molecular mechanism required for apoptosis induced by ultrasound. Moreover, fructose supplementation also maintained DeltaPsi m and reduced ultrasound-induced apoptosis, while pyruvate didn't. It revealed glycolytic products of glycolysis, rather than those produced in tricarboxylic acid (TCA) cycle, were responsible for the reduction of apoptosis.
为了揭示线粒体通透性转变(MPT)与超声诱导的细胞凋亡之间潜在的分子相互作用,本研究采用低强度聚焦超声处理肝癌细胞HepG2。超声处理前,将MPT的特殊抑制剂环孢素A (Cyclosporin A, CSA)和果糖、丙酮酸分别与细胞进行预孵育。采用台盼蓝染色排除试验测定细胞活力。通过磷脂酰丝氨酸外化和DNA片段化评价细胞凋亡。流式细胞术检测线粒体跨膜电位(DeltaPsi m)下降的规律。超声在5.0 W/ cm2下作用1 min,可达到最佳的细胞凋亡和最小的裂解。此外,随着孵育时间的增加,凋亡细胞数量增加,并在12 h左右达到峰值。CSA维持DeltaPsi m,减少超声诱导的细胞凋亡,表明MPT是超声诱导细胞凋亡所需的分子机制。此外,补充果糖还能维持DeltaPsi m并减少超声诱导的细胞凋亡,而丙酮酸则没有。结果表明,减少细胞凋亡的是糖酵解的产物,而不是三羧酸(TCA)循环产生的产物。
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引用次数: 0
Quantile Regression and Box-Cox Transformation's Logical Integration in Fitting Some Kind of Biostatistical Data 分位数回归与Box-Cox变换的逻辑整合拟合一类生物统计数据
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5163270
Y. Yuan, Huansha Wang
Quantile regression can be used for some biostatistical research as the first choice. But direct applications are often hampered by the problem of quantile regression planes' crossing in finite sample cases. After research, the Box-Cox transformation is used to avoid the crossing problem. Integrating Box-Cox transformation with quantile regression, we suggest a new method. And the fitting of salmon lustrousness data is presented to illustrate the use of this method.
分位数回归可以作为一些生物统计研究的首选方法。但在有限样本情况下,分位数回归平面的交叉问题往往阻碍了直接应用。经过研究,采用Box-Cox变换来避免交叉问题。将Box-Cox变换与分位数回归相结合,提出了一种新的方法。并以鲑鱼亮度数据的拟合为例说明了该方法的应用。
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引用次数: 1
Optimization of Multiple Control Parameters of Mathematical Model of Cardiopulmonary Resuscitation Based on Genetic Algorithm 基于遗传算法的心肺复苏数学模型多控制参数优化
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5163157
Lin Xu, Yanru Zhang, Xiaoming Wu, Hengxin Yuan
The objective of the study is to improve the aortic pressure and myocardial perfusion pressure during cardiac arrest through optimized control parameters of external force for cardiopulmonary resuscitation (CPR). The CPR technology described in this paper was active compression-decompression CPR with enhanced external counter-pulsation and inspiratory impedance threshold valve (AEI-CPR). A genetic algorithm (GA) was applied on an established mathematical model of human circulatory system to obtain optimum control parameters of external force for AEI-CPR. Three groups of optimal control parameters were found after running the algorithm for three times. The average number of model running was 149. Obvious hemodynamic effect was attained when the frequency of compression was about 110 min -1 and the lower limbs compression began at the end of chest compression.
本研究旨在通过优化心肺复苏(CPR)外力控制参数,改善心脏骤停时主动脉压和心肌灌注压。本文所描述的心肺复苏术技术是带有增强体外反搏和吸气阻抗阈值阀(AEI-CPR)的主动加减压心肺复苏术。在已建立的人体循环系统数学模型上,应用遗传算法(GA)获得了AEI-CPR的最优外力控制参数。算法运行三次后,得到三组最优控制参数。模型平均运行次数为149次。当按压频率为110 min -1左右,胸按压结束后开始下肢按压时,血流动力学效果明显。
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引用次数: 0
Analysis of Influence Factors on the Air Environment in Underground Space 地下空间空气环境影响因素分析
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5162348
Qinghai Luo, Yanjin Wang, Xiaoming Chen
The characteristics of the temperature and humidity in underground space was analyzed, and other factors, which influence on air environment in underground space, are also analyzed, such as radioactive contamination, microorganism, and harmful gases. If adjusted to local conditions, Moisture proofing, ventilating, dedusting and sterilizing are feasible ways to improve the air environment. Independent dehumidifying and adding air anion are also effective measures to improve the air quality.
分析了地下空间的温湿度特征,分析了放射性污染、微生物、有害气体等对地下空间空气环境的影响因素。因地制宜,防潮、通风、除尘、灭菌是改善空气环境的可行方法。独立除湿和添加空气负离子也是改善空气质量的有效措施。
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引用次数: 0
Effect of GA3 and S3307 on Content of Taxol and Its' Precursors of Taxus cuspidate In Vitro GA3和S3307对东北红豆杉紫杉醇及其前体含量的影响
Pub Date : 2009-06-11 DOI: 10.1109/ICBBE.2009.5162695
Xu Dong, Xiaowen Chen, L. Duan
Young shoots, collected from about 100 trees, were sprayed on 10 mg/L Sumiseven (S3307) and 100 mg/L Gibberellin (GA 3 ) separately., and investigated for their contents of 10-deacetyl Baccatin III (10-DAB), Baccatin III and Paclitaxel (Taxol) at different time in order to get a better understanding of the synthesis mechanism of taxol in vitro. The result shows that S3307 and GA 3 change the metabolism of the three taxanes, and improve the contents of the three taxanes at some degree. We suggest that the effect role occurs before the biosynthesis of 10-DAB.
选取约100棵树的幼芽,分别喷洒10 mg/L的苏密芬(S3307)和100 mg/L的赤霉素(ga3)。研究了10-去乙酰Baccatin III (10-DAB)、Baccatin III和紫杉醇(紫杉醇)在不同时间的含量,以便更好地了解紫杉醇的体外合成机制。结果表明,S3307和ga3改变了三种紫杉烷的代谢,并在一定程度上提高了三种紫杉烷的含量。我们认为这种效应作用发生在10-DAB生物合成之前。
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引用次数: 0
期刊
2009 3rd International Conference on Bioinformatics and Biomedical Engineering
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