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2012 International Conference on Biomedical Engineering and Biotechnology最新文献

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The Research of Lung Sound Signals Based on Cepstrum Analysis 基于倒频谱分析的肺声信号研究
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.439
Benjin Wang, L. Miao, H. Dong, Zeguang Zheng
In this paper, we proposed a new method of signal processing techniques for the application of analyzing four typical lung-sound signals (tracheal breath sounds, vesicular breath sounds, inspiratory and expiratory stridor, and stridor). First, we focus on the estimation method of the sound source number in a lung disease. Second, we calculate the time interval of each sound source signal accurately. Finally, we put the delay time and the number of sound sources as the characteristics, and study the relationships between each pathological lung sound and the characteristics. The innovation of this paper is that utilizing the cepstrum analysis as a new idea to study the pathological diagnosis of lung diseases.
本文提出了一种新的信号处理方法,用于分析四种典型的肺声信号(气管呼吸音、囊泡呼吸音、吸气和呼气喘鸣、喘鸣)。首先,重点研究了肺部疾病声源数的估计方法。其次,我们准确地计算了每个声源信号的时间间隔。最后,我们将延迟时间和声源数量作为特征,研究了各病理性肺声与特征之间的关系。本文的创新之处在于将倒谱分析作为一种新的思路来研究肺部疾病的病理诊断。
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引用次数: 8
The Electrochemical Impedance Recognition for Two Heme Proteins on dsDNA/PGA/GCE dsDNA/PGA/GCE上两种血红素蛋白的电化学阻抗识别
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.13
Rongrong Zhang, Chunqing Xie, Yayun Zhu, Liangjun Pan, Changying Yang
A DNA-modified electrode was fabricated by the way of electrode modifying, namely the polymerisation-covalently bonding, for studying the recognition of DNA to heme protein. Electrochemical Impedence Resistance (EIS) showed that electron transfer resistance increased with the adding of Hemoglobin (Hb) and Cytochrome c (Cyt c). Reaction constant of Hb and DNA is K=1.13×105 L-mol-1, and K=4.08×105 L-mol-1 for Cyt c, indicating that DNA-modified electrode can well recognize Hb and Cyt c.
采用电极修饰即聚合-共价键合的方法制备DNA修饰电极,研究DNA对血红素蛋白的识别。电化学阻抗(EIS)显示,随着血红蛋白(Hb)和细胞色素c (Cyt c)的加入,电子传递电阻增加,Hb和DNA的反应常数为K=1.13×105 L-mol-1, Cyt c的反应常数为K=4.08×105 L-mol-1,说明DNA修饰电极可以很好地识别Hb和Cyt c。
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引用次数: 0
A Pilot-scale Experimental Research on Nutrient Matter Removal in a Modified SBR 改性SBR去除营养物质的中试研究
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.36
Jun Yu Li, Li-min Wang, Xue-bin Li, Jiong-hui Li
A novel modified sequencing batch reactor was proposed to treat municipal wastewater. The modified SBR had a special structure consisting of 4 tanks with different anaerobic/anoxic/aerobic function. A pilot-scale modified SBR process was researched to treat urban wastewater. The effluent TN was 10 mg/L. The TN removal efficiency was 58%. The NH4+-N removal efficiency was 98%. The average effluent NH4+-N was lower than 0.8 mg/L. The result showed the novel modified SBR was advantageous for nitrification bacteria growth. The TP removal efficiency was 81%. The average effluent TP concentration was less than 0.75 mg/L. The effluent TP concentration below 0.75 mg/L was got on 95% of the operational days. The result showed the novel modified SBR was advantageous for PAO bacteria growth.
提出了一种新型的序批式反应器处理城市污水。改造后的SBR具有特殊的结构,由4个不同厌氧/缺氧/好氧功能的池组成。研究了一种改良SBR工艺处理城市污水的中试工艺。出水TN为10 mg/L。TN去除率为58%。NH4+-N去除率达98%。出水平均NH4+-N低于0.8 mg/L。结果表明,新型改性SBR有利于硝化细菌的生长。TP去除率达81%。出水TP平均浓度小于0.75 mg/L。95%的运行天数出水总磷浓度低于0.75 mg/L。结果表明,新型改性SBR有利于PAO细菌的生长。
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引用次数: 0
Studies on Liposome-encapsulated-chemical Actinometer in UV-disinfection by Low Pressure UV Lamp: Bio-chemical Actinometer in UV-Disinfection 脂质体包封化学光照度计在低压紫外灯紫外线消毒中的应用研究:生物化学光照度计在紫外线消毒中的应用
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.368
Jinglan Hong, M. Otaki
A liposome-encapsulated lodide-lodate chemical actinometer has been synthesized to monitor the inactive microorganisms damaged by UV disinfection. Relationship between bio-dosimeter and liposome-encapsulated lodide-lodate chemical actinometer under low pressure UV lamp was investigated. Similar dose rates between chemical actinometer and bio-dosimeter were observed. The particle sizes of liposome-encapsulated lodide-lodate chemical actinometer ranged from 1 to 3 μm. The chemical actinometer after encapsulation by the liposome was concentrated to 7 times by a TOC assay. Results indicate that it is possible to apply the liposome-encapsulated lodide-lodate chemical actinometer in UV water disinfection systems.
合成了一种脂质体包封的碘化物-碘酸盐化学光度计,用于监测紫外线消毒后的失活微生物。在低压紫外灯下研究了生物剂量计与脂质体包封的碘化物化学光照度计的关系。化学放射量计与生物剂量计的剂量率相似。脂质体包封的lodide- lod酸盐化学光度计的粒径范围为1 ~ 3 μm。脂质体包封后的化学光照度计经TOC法浓缩至7倍。结果表明,脂质体包封的碘化物-碘化物化学光度计在紫外水消毒系统中应用是可行的。
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引用次数: 4
Lily Polysaccharide Prevents Alloxan-induced HIT-T15 Cell Damage by Reducing ROS Generation 百合多糖通过减少ROS的产生来防止四氧嘧啶诱导的HIT-T15细胞损伤
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.264
Yuping Li, J. Chang, Cheng-mei Liu, X. Xiong, Y. Gong, Zi-ling Li
The previous studies of our team and other researchers have shown that two polysaccharides derived from bulbs of lily aqueous extracts (LP-1, LP-2) can decrease fasting blood glucose concentration in diabetic model animal (in vivo). In the present study, we investigated the effects of LP-1 or LP-2 on cultured pancreatic d-cell tumor-derived cell line HIT-T15 that had undergone oxidative damage. The cell viability, insulin secretion, and intracellular reactive oxygen species (ROS) level were investigated in HIT-T15 cells after LP-, alloxan-, or both-treatment, respectively. The metabolic activity of d-cells was determined by MTT assay while the insulin secretion was detected by ELISA technique. Intracellular ROS was detected by fluorescent spectrophotometry using DCFH-DA. The treatment with LP-1 (>; 0.5 mg/ml) or LP-2 (>; 0.1 mg/ml) could significantly elevated the cell viability compared to untreated normal cells (p 1 mg/ml). Importantly, the viability of cells treated with 10 mg/ml LP-2 were almost restored to the levels of alloxan-untreated cells and completely prevented the lowering of glucose-stimulated insulin release. Our investigation suggested that LP-1 or LP-2 reduced the damage of alloxan-induced HIT-T15 cells through scavenging intracellular ROS level. And these data also provide some information when LP-1 or LP-2 is used as a bioactive component for developing a new anti-diabetic agent.
本课题组等前期研究表明,从百合球茎水提物中提取的两种多糖(LP-1、LP-2)可降低糖尿病模型动物体内空腹血糖浓度。在本研究中,我们研究了LP-1或LP-2对经过氧化损伤的胰腺d细胞肿瘤来源细胞系HIT-T15的影响。分别观察LP-、四氧嘧啶-或两者处理后HIT-T15细胞的细胞活力、胰岛素分泌和细胞内活性氧(ROS)水平。MTT法检测d细胞代谢活性,ELISA法检测胰岛素分泌。采用DCFH-DA荧光分光光度法检测细胞内ROS。LP-1 (>;0.5 mg/ml)或LP-2 (>;与未处理的正常细胞(p为1 mg/ml)相比,0.1 mg/ml可显著提高细胞活力。重要的是,用10 mg/ml LP-2处理的细胞活力几乎恢复到四氧嘧啶未处理的细胞水平,并完全阻止了葡萄糖刺激的胰岛素释放的降低。我们的研究表明,LP-1或LP-2通过清除细胞内ROS水平来减轻四氧嘧啶诱导的HIT-T15细胞的损伤。这些数据也为LP-1或LP-2作为生物活性成分开发新的抗糖尿病药物提供了一些信息。
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引用次数: 0
Occurrence and Elimination of PPCPs in Sewage Treatment Plants, in the Pearl River Delta (PRD), South China 华南珠江三角洲污水处理厂ppcp的发生与消除
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.287
T. Ying, Xu Zhen-cheng, Guo Qing-wei, L. Xiao-ming, Wang Li, Hong Cheng-yang, Bing Yong-xin
A scoping investigation was carried out to evaluate the occurrence, persistence and fate of a range of pharmaceuticals and personal care products (PPCPs) at different processing points at three full-scale sewage treatment plants (STPs) at Guangdong, South China. The concentrations of 7 pharmaceuticals from non-steroidal anti-inflammatory analgesics and antihyperlipidemics were examined in each treatment stages in STP3. And one anti-biotic was examined the removal efficiencies in three STPs. Salicylic acid was the most abundant analyte in the three STPs influent, up to ppb magnitude, followed by ibuprofen, diclofenac, naproxen, gemfibrozil, mefenamic acid and clofibric acid. The concentration of salicylic acid, ibuprofen, diclofenac, naproxen and gemfibrozil decreased at least by one order of magnitude after biological treatments. Mefenamic acid and clofibric acid were found not apparent removal efficiencies during these stages, which could indicate lower biodegradability. The different results of triclosan (TCS) removal were appeared in three sewage treatment plants, 79.46%, 64.11% and 31.95%, respectively. Now, the existing sewage treatment system only dependent on the activated sludge secondary treatment can not completely remove PPCPs.
在中国南方广东省的三个污水处理厂(STPs)进行了范围调查,以评估一系列药品和个人护理产品(PPCPs)在不同处理点的发生、持久性和命运。在STP3的每个治疗阶段检测7种非甾体抗炎镇痛药和抗高脂血症药物的浓度。并检测了一种抗生素在三种STPs中的去除效率。水杨酸是三种STPs中含量最高的分析物,最高可达ppb级,其次是布洛芬、双氯芬酸、萘普生、吉非罗齐、甲氧胺酸和纤维酸。生物治疗后,水杨酸、布洛芬、双氯芬酸、萘普生和吉非齐的浓度至少下降了一个数量级。甲氧胺酸和纤维酸在这两个阶段的去除率不明显,表明其生物降解性较低。三个污水处理厂对三氯生(TCS)的去除率分别为79.46%、64.11%和31.95%。目前,现有的污水处理系统仅依靠活性污泥的二次处理无法完全去除PPCPs。
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引用次数: 2
Kinetic Model of Enzymatic Hydrolysis of Protein about the Protein of Silkworm Pupae -- Alcalase System 蚕蛹蛋白酶解动力学模型——Alcalase体系
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.262
Zhongxing Zhao, Dankui Liao, Jianhua Sun, Z. Tong, Kelin Huang, Guosong Sun, Zhihong Wu
The silkworm pupa (SWP) is known for their nutritional value of high protein. In China, the production of protein of silkworm pupae (PSP) is very high because of the development of silk industry. This study applied the model which already was reported in the literature to the PSP - Alcalase system. It proved that the substrate inhibition existed in this system, and its reaction constants were determined as Km=3.50 g·L-1, k2=251.7 min-1, Ks=94.8 g·L-1, kd=41.4 min-1, c0=3.13×10-4, rmax=16.2 g·L-1·min-1. At last, the experimental data were substituted this kinetic model, the average relative error was only 4.60%. So, it proved that kinetic model was reasonable, and the kinetic equation could model the hydrolysis process of PSP-Alcalase.
蚕蛹(SWP)以其高蛋白的营养价值而闻名。在中国,由于蚕业的发展,蚕蛹蛋白(PSP)的产量很高。本研究将已有文献报道的模型应用于PSP - Alcalase系统。结果表明,该体系存在底物抑制作用,反应常数Km=3.50 g·L-1, k2=251.7 min-1, Ks=94.8 g·L-1, kd=41.4 min-1, c0=3.13×10-4, rmax=16.2 g·L-1·min-1。最后将实验数据代入动力学模型,平均相对误差仅为4.60%。因此,该动力学模型是合理的,动力学方程可以模拟PSP-Alcalase的水解过程。
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引用次数: 2
Correlation between Expressions of Estrogen Receptor, Thymidylate Synthase and CAF Regime Sensibility in Breast Carcinoma 乳腺癌中雌激素受体、胸腺苷酸合酶表达与CAF敏感性的关系
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.117
Xiaoli Zhang, Linxi Zhang
To study the efficacy of one regimes of commonly used chemotherapy( cyclophosphamide + adriamycin+ 5-fluorouracil, CAF) and its relationship with estrogen receptor(ER), thymidylate synthase (TS) for breast carcinoma. Methods The inhibition rates of CAF with primary cell culture were observed by MTT method in 111 cases of breast carcinoma. The expressions of TS, ER in 111 cases of breast cancer and 38 cases of adenofibroma were examined by streptavidin-perosidase immunohistochemistry method. Results Positive rates of TS and ER were higher in breast carcinoma than that in adenofibroma. Expression of ER was related to histological type in breast carcinoma (P<;0.05). Expressions rates of TS and ER were related to lymph node metastasis (P<;0.05). The sensitive rate of CAF chemotherapy protocols was 44.1%. There was relationship between expressions of TS, ER and sensitive rate of CAF chemotherapy protocols. Conclusion: The overexpressions of TS, ER may play an important role in the carcinogenesis of breast cancer. Detection of TS, ER expressions in breast carcinoma may direct to choose CAF chemotherapy.
探讨乳腺癌常用化疗方案环磷酰胺+阿霉素+ 5-氟尿嘧啶(CAF)的疗效及其与雌激素受体(ER)、胸苷酸合成酶(TS)的关系。方法采用MTT法观察111例乳腺癌原代细胞培养对CAF的抑制率。采用链霉亲和素-过氧化物酶免疫组化方法检测111例乳腺癌和38例腺纤维瘤组织中TS、ER的表达。结果TS和ER在乳腺癌中的阳性率高于腺纤维瘤。乳腺癌组织中ER的表达与组织类型有关(P< 0.05)。TS、ER表达率与淋巴结转移相关(P< 0.05)。CAF化疗方案的敏感性为44.1%。TS、ER的表达与CAF化疗方案的敏感性有相关性。结论:TS、ER的过表达可能在乳腺癌的发生过程中起重要作用。检测乳腺癌组织中TS、ER的表达可指导CAF化疗的选择。
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引用次数: 0
Human Brain Phantom Modeling Based on Relative Permittivity Dielectric Properties 基于相对介电常数介电特性的人脑幻像建模
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.239
K. Chew, R. Sudirman, N. Seman, Ching Yee Yong
This study aims to investigate the clinical outcomes of human brain dielectric properties in order to build a human-like brain phantom using simple material. This artificial intelligence human brain was developed according to the dielectric properties of a real human brain. The regions cover grey matter and white matter tissues. Elements used for phantom building demonstrate adequate internal consistency of er (relative permittivity) within 60-80 for a range of frequency from 1-6 GHz. A surprisingly finding, quantity of element sugar is the main reason of affecting the permittivity. The findings give a big step closer for building an artificial human brain without defect.
本研究旨在探讨人脑介电特性的临床效果,以期利用简单材料构建类人脑模型。这个人工智能人脑是根据真实人脑的介电特性开发的。该区域覆盖了灰质和白质组织。用于造模的元件在1-6 GHz频率范围内具有60-80的相对介电常数足够的内部一致性。一个令人惊讶的发现,元素糖的数量是影响介电常数的主要原因。这一发现使制造没有缺陷的人造大脑又迈进了一大步。
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引用次数: 15
R and D Cloud CEIB: Management and Knowledge Extraction System for Bioimaging in the Cloud CEIB:云中的生物成像管理与知识提取系统
Pub Date : 2012-05-28 DOI: 10.1109/ICBEB.2012.323
J. M. S. Serrano, M. A. C. Quevedo, M. de la Iglesia-Vaya, L. Martí-Bonmatí, R. Valenzuela
The management and knowledge extraction system for bioimaging in the cloud (R & D Cloud CEIB) which is proposed in this article will use the services offered by the centralization of bioimaging through Valencian Biobank Medical Imaging (GIMC) as a basis for managing and extracting knowledge from a bioimaging bank, providing that knowledge in the form of services with high added value and expertise to the Electronic Patient History System (HSE), thus bringing the results of R & D to the patient, improving the quality of the information contained therein. R & D Cloud CEIB has four general modules: Search engine (SE), manager of clinical trials (GEBID), anonymizer (ANON) and bioimage knowledge engine (BIKE). The BIKE is the central module and through its sub modules analyzes and generates knowledge to provide to the HSE through services. The technology used in R & D Cloud CEIB is completely based on Open Source. Within the BIKE, we focus on the development of the classifier module (BIKE-Classifier), which aims to establish a method for the extraction of biomarkers for bioimaging and subsequent analysis to obtain a classification in bioimaging available pools following GIMC diagnostic experiences.
bioimaging管理和知识提取系统的云(云CEIB R & D),本文提出了将使用提供的服务集中bioimaging通过瓦伦西亚生物医学成像(GIMC)为基础管理和从bioimaging银行获取知识,为知识服务的形式提供高附加值和专业知识的电子病历系统(HSE),从而使R & D病人的结果,提高其中所含信息的质量。研发云中欧国际工商学院有四大通用模块:搜索引擎(SE)、临床试验管理器(GEBID)、匿名器(ANON)和生物图像知识引擎(BIKE)。BIKE是中心模块,通过其子模块分析和生成知识,通过服务提供给HSE。中欧国际工商学院研发云采用的技术完全基于开源。在BIKE中,我们专注于分类器模块(BIKE- classifier)的开发,该模块旨在建立一种提取生物成像和后续分析的生物标记物的方法,从而根据GIMC诊断经验在生物成像可用池中获得分类。
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引用次数: 2
期刊
2012 International Conference on Biomedical Engineering and Biotechnology
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