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2010 4th International Conference on Bioinformatics and Biomedical Engineering最新文献

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Parallel Volume Rendering Based on LOD Method 基于LOD方法的并行体绘制
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5517759
Xiwei Gao, Hai Lin
Parallel volume rendering is an effective approach, which can achieve fast rendering of large-scale data sets by dividing the volume and then assigning them to different cluster nodes for rendering in parallel. This paper presents some acceleration techniques in each stage of the parallel-rendering- pipeline. In the stage of data management, we employ a LOD method to overcome the constraints of storage capacity and to speed up the rendering while maintaining image quality. In the stage of rendering, we use the geometric template method to reduce the huge computational cost of the CPU. Finally the binary-swap algorithm is used in the image synthesis stage. The load-balancing problem is a key issue in parallel rendering and it would become more serious especially when we zoom in or out. After the use of the LOD method, we resolve the load-balancing problem by introducing the kd-tree data structure and utilizing the dynamic rendering time of the last frame as the balancing standard. Several experiments on the Virtual Human (VH) data sets show that these techniques can effectively improve the performance of parallel volume rendering.
并行体绘制是一种有效的方法,通过分割体并将其分配到不同的集群节点进行并行绘制,可以实现大规模数据集的快速绘制。本文介绍了并行渲染流水线各阶段的加速技术。在数据管理阶段,我们采用LOD方法来克服存储容量的限制,在保持图像质量的同时加快渲染速度。在渲染阶段,我们采用几何模板的方法来减少CPU巨大的计算成本。最后在图像合成阶段使用二进制交换算法。负载平衡问题是并行渲染中的一个关键问题,特别是当我们放大或缩小时,负载平衡问题会变得更加严重。在采用LOD方法后,引入kd-tree数据结构,以最后一帧的动态呈现时间作为均衡标准,解决了负载均衡问题。在虚拟人(VH)数据集上的实验表明,这些技术可以有效地提高并行体绘制的性能。
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引用次数: 2
Preparation and Characterization of Insoluble Dietary Fiber from Jujube Residue and Its Physicochemical Characters 枣渣不溶性膳食纤维的制备、表征及其理化性质
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5517886
W. Zong, W. Yuan
In order to make use of jujube residue, insoluble dietary fiber from jujube residue was prepared by using auxiliary alkal method . The functional characteristics of insoluble dietary were also studied,such as water holding capacity, expansibility and fat adsorption capacity. The optimum parameters obtained by orthogonal experiment were as follows:NaOH concentration 0.4mol/L ,soaking temperature 50℃,soaking time 120 min and milled size 60 mesh.Under this condition,yield of insoluble dietary fiber was 73.1%. The water holding capacity, expansibility and fat adsorption capacity of insoluble dietary fiber were 4.9g/g, 4.6mL/g , and 3.2g/g , respectively. The extraction yield of dietary fiber from jujube residue was higher,and its physicochemical characteristic was good. There are good prospects for development.
为充分利用枣渣,采用辅助碱法制备枣渣不溶性膳食纤维。研究了不溶性饲料的保水能力、膨胀性和脂肪吸附能力等功能特性。通过正交试验得到的最佳工艺参数为:NaOH浓度0.4mol/L、浸泡温度50、8451、65292、浸泡时间120 min、研磨粒度60目、不溶性膳食纤维得率为73.1%。不溶性膳食纤维的持水量为4.9g/g,膨胀性为4.6mL/g,脂肪吸附量为3.2g/g。从枣渣中提取膳食纤维得率较高,其理化特性良好。发展前景良好。
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引用次数: 0
A Pilot Study on Domestic Wastewater Treatment with A/O MBR Systems A/O MBR系统处理生活污水的中试研究
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5517220
Zhiqiang Liu, Xiaomei Zhang, Qingqing Li, Zhen Sun, Liu Chao
Anoxic/aerobic (A/O) membrane bioreactor (MBR) process, which is based on the MBR technic, is an effective method of wastewater treatment. In this study, two chief operation indexes of A/O MBR system are studied and optimized. The final results shows that, under the operation condition that the HRT rate between anoxic and aerobic zone is 1:3 (which in this system is: 4.5h in aerobic zone, 1.5h in anoxic zone), and the IR rate is 300%Q, the COD, NH3 and TN removal effects reach the best. In the optimized system, the COD of effluent is below 30mg/L; NH3-N is kept lower than 10mg/L; and TN is lower than 40mg/L. the effluent reaches the standards of water reuse
厌氧/好氧(A/O)膜生物反应器(MBR)工艺是在MBR技术基础上发展起来的一种有效的污水处理方法。本文对A/O MBR系统的两个主要运行指标进行了研究和优化。最终结果表明,在缺氧区与好氧区HRT比为1:3(本系统为:好氧区4.5h,缺氧区1.5h)、IR率为300%Q的运行条件下,COD、NH3和TN的去除效果最好。优化后的系统出水COD低于30mg/L;NH3-N保持在10mg/L以下;TN < 40mg/L。出水达到中水回用标准
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引用次数: 0
Analyzing Conformation of Fusion Protein on Bivalent Single-Chain Antibody with (Gly4Ser)n (Gly4Ser)n二价单链抗体融合蛋白构象分析
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5516388
Jianhua Zhang, Z. Shang, J. Liang, Ling Wang, Jun Yun
Abstract-scFv (single-chain Fv fragment)is the gene engineered antibody employed widely in at present. Recently there have been some progress on colorectal cancer diagnosis and treatment-oriented with scFv as carrier, but it is differential on affinity and anti-tumor activity of scFv with that of derived factor. Proper linker could make scFv have more suitable biological activity on clinical application. So it becomes a key step that how to choose and design a proper linker. In this work, the (Gly4Ser)n is used as the linker to connect VH and VL separately (n=0,1,2,3,4,5,6,7,8,9). and the 3D structure of corresponding scFv is reconstructed by homology modeling. The End-End distance of scFy protein with different linker (G4S)n, which 3D structure coordinate system are normalized, are compared to evaluate the effect of linker length to VH and VL. In molecular biology experiment, ND-1scFv-n are expressed and analyzed with n=1,3,5,7,9, their biologic activity active are consistent with what estimated by End-End distance. So the index to estimate biologic activity of scFv with its End-End distance is presented and could be helpful to further understand the relationship between the spatial structure of single-chain antibody and the physical and chemical properties.
摘要-单链Fv片段(single-chain Fv fragment, scfv)是目前应用广泛的基因工程抗体。近年来,以scFv为载体的结直肠癌诊疗研究取得了一定进展,但scFv与衍生因子的亲和力和抗肿瘤活性存在差异。合适的连接体可以使scFv在临床应用中具有更合适的生物活性。因此,如何选择和设计合适的连杆就成为关键的一步。在这项工作中,使用(Gly4Ser)n作为连接器分别连接VH和VL (n=0,1,2,3,4,5,6,7,8,9)。通过同构建模,重构了相应scFv的三维结构。比较了三维结构坐标系归一化后不同连接体(G4S)n的scFy蛋白的End-End距离,评价了连接体长度对VH和VL的影响。在分子生物学实验中,以n=1,3,5,7,9表达和分析ND-1scFv-n,其生物活性活性与End-End距离估计一致。因此提出了用单链抗体的End-End距离来评价单链抗体生物活性的指标,有助于进一步了解单链抗体的空间结构与理化性质之间的关系。
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引用次数: 0
Effect of Using CaCl2 and MgSO4 Compound Reagent Treating Coal-Washing Wastewater and Its Mechanism 氯化钙和硫酸镁复合药剂处理洗煤废水的效果及机理
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5517305
Yafeng Li, Yingjun Hao, Lin Chen
Abstract-A new reagent is compounded by CaCl2 and MgSO4. It is determined through experiments that the proper mass ratio of CaCl2 and MgSO4 is 1:1. The optimum technical conditions which use CaCl2 and MgSO4 compound reagent to treat coal-washing wastewater are determined by the orthogonal experiment. The experimental results in laboratory are proved to be feasible through experiments in production. After analysing, we think that the coagulation mechanism of CaCl2 and MgSO4 compound reagent treating coal-washing wastewater does not comletely comply with DLVO theory. Resulting from many aspects related to each other.
摘要:用CaCl2和MgSO4复配了一种新试剂。通过实验确定了CaCl2与MgSO4的最佳质量比为1:1。通过正交试验确定了用氯化钙和硫酸镁复合药剂处理洗煤废水的最佳工艺条件。通过生产试验,验证了实验室试验结果的可行性。经过分析,我们认为CaCl2和MgSO4复合药剂处理洗煤废水的混凝机理并不完全符合DLVO理论。由许多方面相互关联而产生。
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引用次数: 0
Chrome Removal from the Water Sample by Macromolecule Heavy Metal Flocculant CSAX 高分子重金属絮凝剂CSAX去除水样中铬的研究
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5516227
Shening Wang, Q. Chang, C. Gao
The present paper deals with the efficiency of a novel macromolecule flocculant crosslinked starch-graft-polyacrylamide-co-sodium xanthate (CSAX) to remove Cr(VI) from water sample of a water plant. The results showed that the CSAX (1.0 mg/L) is capable of removing up to 85.4% of Cr(VI) from water sample having low initial concentration (0.221 mg/L) under the optimum conditions. The water treated satisfied the provisional guideline of 50 μg/L for Cr(VI) in drinking water established by the World Health Organization (WHO).
本文研究了一种新型高分子絮凝剂——交联淀粉-接枝聚丙烯酰胺-共黄药钠(CSAX)对水厂水样中铬(VI)的去除效果。结果表明,在最佳条件下,CSAX (1.0 mg/L)对初始浓度较低的水样(0.221 mg/L)的Cr(VI)去除率可达85.4%。处理后的水满足世界卫生组织(WHO)制定的饮用水中Cr(VI)含量50 μg/L的临时指标。
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引用次数: 0
The Resistivity of the Live Human Skull - The Effect of Variation in Volume of Immersion Fluid 活体颅骨的电阻率——浸液体积变化的影响
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5517338
Chi Tang, Fusheng You, D. Gao, Guang Cheng, F. Fu, Xiuzhen Dong
In the present study, the influence of the variation of immersion fluid volume (or air-drying time) on skull resistivity was studied. The results showed that the skull resistivity increased significantly with the increasing of air-drying time. For air-drying time of 10 min, the skull resistivity increased approximately 2 times, and for 30 min and 60 min, the skull resistivity increased significantly about 7 times and 19 times. This study suggests that we should pay more attention to the humidity of experimental environment to keep the natural immersion fluid from volatilizing in the measurement on skull resistivity. Preserving the freshly excised skull samples in gauze soaked with physiological saline can effectively keep the immersion fluid and maintain the natural physiological status.
在本研究中,研究了浸泡液体积(或风干时间)的变化对颅骨电阻率的影响。结果表明,颅骨电阻率随风干时间的延长而显著增大。在风干时间为10 min时,颅骨电阻率增加约2倍,在风干时间为30 min和60 min时,颅骨电阻率显著增加约7倍和19倍。研究表明,在颅骨电阻率测量中,应注意实验环境的湿度,防止自然浸没液挥发。将刚切除的颅骨标本保存在生理盐水浸泡的纱布中,可以有效地保持浸泡液,保持自然的生理状态。
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引用次数: 0
Recovery of Dimethylbenzene/ Butylacetate from Spent Solvent Oil by Batch Distillation: Experiment and Simulation 间歇精馏从废溶剂油中回收二甲苯/乙酸丁酯的实验与模拟
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5516590
Chang-hai Li, Yuejin. Li
The recovery of Dimethylbenzene and Butylacetate from industry spent solvent oil by batch distillation was studied, and the batch distillation experiment was performed with pretreated material. The effect of separation temperature, time and reflux ratio on separation process was investigated. The experimental results showed that the concentrations of Dimethylbenzene and Butylacetate were above 95% in top distillate product, and the yield of Dimethylbenzene and Butylacetate was 62% and 99.45%,respectively,under appropriately conditions. A robust and rapid mathematical model had been developed, based on mass balance and relative volatility. The satisfactory results obtained allowed to use the model in real time for a better control and management of batch distillation.
研究了间歇精馏从工业废溶剂油中回收二甲苯和乙酸丁酯的工艺,并对预处理后的物料进行了间歇精馏试验。考察了分离温度、时间和回流比对分离过程的影响。实验结果表明,在适宜的条件下,顶馏产物中二甲苯和乙酸丁酯的浓度均在95%以上,二甲苯和乙酸丁酯的收率分别为62%和99.45%。在质量平衡和相对挥发性的基础上,建立了一个稳健、快速的数学模型。所得结果令人满意,可用于间歇精馏的实时控制和管理。
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引用次数: 0
The Cloning and Analysis of a Partial Lipase Gene Sequence of Staphylococcus hominis GIMT1.079: Partial Lipase Gene Sequencing of S. hominis 人型葡萄球菌GIMT1.079部分脂肪酶基因序列的克隆与分析:人型葡萄球菌部分脂肪酶基因序列
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5518078
Na Qiao, Q. Gao, Q. Zhao, Depei Wang, Yi-peng Chen, Wenfan Zhao, Changyan Yu
Lipase activity is common in staphylococci. Based on the blast of various known staphylococcal lipase DNA sequences, the degenerate primers were derived to amplify a 782-bp consensus lipase gene sequence of Staphylococcus hominis GIMT1.079, which encoded a deduced polypeptide of 260 amino acid (aa) residues. The alignment of aa sequence revealed that this 260-aa partial lipase of S. hominis shared high homology with those conserved parts of other 11 deduced staphylococcal lipases, in the range of the lowest 43.0% of S. epidermidis and the highest 63.5% of S. saprophyticus. Two aa residues, Ser39 and Asp230, were preliminarily confirmed in the putative catalytic triad as well as the 'P-loop' motif (-[AG]-x4-G-K-[ST]-) in this deduced 260-aa partial S. hominis lipase sequence.
脂肪酶活性在葡萄球菌中很常见。基于已知的多种葡萄球菌脂肪酶DNA序列的blast,得到的简并引物扩增出了人型葡萄球菌GIMT1.079全长782 bp的脂肪酶基因序列,该序列编码260个氨基酸残基的推断多肽。aa序列比对表明,该260-aa部分脂肪酶与其他11种推断的葡萄球菌脂肪酶的保守部分同源性较高,在表皮葡萄球菌中同源性最低的43.0%和腐生葡萄球菌中同源性最高的63.5%之间。两个aa残基Ser39和Asp230在推测的催化三联体中得到了初步确认,在推断的260-aa部分人链球菌脂肪酶序列中也得到了“P-loop”基序(-[AG]-x4- g - k -[ST]-)的初步确认。
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引用次数: 1
A Survey and Analysis on Farmer's Awareness and Performance for Promoting Environmental Management in Rural China: A Case Study from Panjiazhuang Village 中国农村农民环境管理意识与绩效调查分析——以潘家庄村为例
Pub Date : 2010-06-18 DOI: 10.1109/ICBBE.2010.5518180
Peng-mei Li, Hui-ming Li, Xiao-li Zuo
The main objective of this study is to create a better understanding of farmers' awareness and performance in the promotion of environmental protection in rural China. We have chosen Panjiazhuang(Pan) Village as the research object. The data and information used in this paper were collected by distributing questionnaires randomly in Pan Village and interviewing 120 respondents. The results indicate that the residents have limited awareness and poor understanding about rural environmental protection, and there is some space for changing their behaviors related to energy use, garbage disposal and fertile use in planting to be more environmental friendly.
本研究的主要目的是更好地了解农民在促进中国农村环境保护方面的意识和表现。我们选择潘家庄(潘)村作为研究对象。本文所使用的数据和信息是通过在潘村随机发放问卷,访谈120名受访者来收集的。结果表明,居民对农村环境保护的意识有限,认识不足,在能源利用、垃圾处理和种植肥力利用等方面的行为仍有一定的改变空间,使其更加环保。
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引用次数: 1
期刊
2010 4th International Conference on Bioinformatics and Biomedical Engineering
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