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2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)最新文献

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Non invasive measurement of skin hydration and transepidermal water loss in normal skin 正常皮肤水合及经皮失水的无创测量
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504435
M. Mohamad, A. R. Msabbri, M. MatJafri
Non invasive bioengineering techniques have been used to evaluate Stratum Corneum (SC) hydration and Transepidermal Water Loss (TEWL) in normal skin. Fifteen healthy volunteers aged between 21–27 participated in this study. We conducted a self skin evaluation questionnaire and a noninvasive measurement was performed on the palm, forearm, upper arm and forehead under controlled environment (temperature 21 ± 1 °C, relative humidity 45 ± 5%). Skin hydration was measured with a DermaLab® USB Moisture Module (Cortex Technology, Hadsund, Denmark) and Scalar Moisture Checker MY-808S (Scalar Corporation, Japan) while TEWL measurements were determined using a DermaLab® USB TEWL Module. The areas examined showed skin hydration and TEWL was differed depending on the anatomical sites. The correlations between the parameters were analysed. As a result, no significant correlations between TEWL and skin hydration capacitance were observed. A significant correlation was established between TEWL and conductance.
非侵入性生物工程技术已被用于评估正常皮肤角质层(SC)水化和经皮失水(TEWL)。15名年龄在21-27岁之间的健康志愿者参加了这项研究。我们在受控环境(温度21±1℃,相对湿度45±5%)下,对手掌、前臂、上臂和前额进行无创皮肤测量。皮肤水分使用DermaLab®USB水分模块(Cortex Technology, Hadsund, Denmark)和Scalar Moisture Checker MY-808S (Scalar Corporation, Japan)测量,水分流失测量使用DermaLab®USB水分流失模块。检查的区域显示皮肤水合作用和TEWL因解剖部位而异。分析了各参数之间的相关性。结果表明,TEWL与皮肤水合电容之间无显著相关性。TEWL与电导之间存在显著的相关性。
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引用次数: 6
Tesla turbine for energy conversion: An automotive application 用于能量转换的特斯拉涡轮:汽车应用
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504427
Tan Wee Choon, A. AnasRahman, Tan Sin Li, Lim Eng Aik
This project is to design and fabricate the Tesla turbine with gas as working fluid and looking at the potential of installation a Tesla turbine onto the car in order to utilize those energy which originally generated from vehicle's engine and loss to environment due to drag force, and convert partial back to electrical energy and store within battery which hopefully can be used in hybrid vehicles or electrical vehicles for small energy consumption applications. The optimum design is determined based on the study parameters such as distance between disks and total contact area between working fluid and disks. In addition, the Tesla turbine's torque is analyzed using Computational Fluid Dynamics (CFD) Software and found that the best distance between disks is 0.001 m while the most suitable contact area between working fluid and disks is 0.099 m2. At the end of the project, it can be observed that the torque has increased by 29.6 % while the head loss has a significant drop of 26.9 %.
这个项目是设计和制造以气体为工作流体的特斯拉涡轮,并研究安装在汽车上的特斯拉涡轮的潜力,以便利用那些最初从汽车发动机产生的能量和由于阻力而损失到环境中的能量,并将部分转换回电能并存储在电池中,希望可以用于混合动力汽车或电动汽车的小能耗应用。根据圆盘之间的距离和工作流体与圆盘的总接触面积等研究参数确定最佳设计方案。此外,利用计算流体动力学(CFD)软件对特斯拉涡轮的转矩进行了分析,发现圆盘之间的最佳距离为0.001 m,工作流体与圆盘的最合适接触面积为0.099 m2。在工程结束时,可以观察到转矩增加了29.6%,而水头损失明显下降了26.9%。
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引用次数: 2
Diagnostic ultrasound exposure during pregnancy potentially affects rabbit fetal parathyroid hormone level 妊娠期超声诊断暴露可能影响兔胎儿甲状旁腺激素水平
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504292
S. Dom, H. A. Razak
Prenatal hyperparathyroidism (HPT) is one of the true emergency cases and capable of causing serious problems to the mother as well as the unborn baby. This in-vivo study was aimed to investigate the changes in parathyroid hormone (PTH) level of rabbit fetal bodies exposed to diagnostic ultrasound during pregnancy for varying duration of time. As compared to that of control, significantly low PTH levels were observed in the groups exposed for 30 and 60 minutes during pregnancy. This ultrasound heating effect could trigger further studies to look for any adverse effects and/or clinical benefits in human during fetal stage.
产前甲状旁腺功能亢进(HPT)是一种真正的紧急情况,能够给母亲和未出生的婴儿造成严重的问题。本体内研究旨在探讨兔胎体在妊娠期间暴露于诊断性超声不同时间的甲状旁腺激素(PTH)水平的变化。与对照组相比,在怀孕期间暴露30分钟和60分钟的组中观察到甲状旁腺激素水平明显较低。这种超声加热效应可以引发进一步的研究,以寻找胎儿期人类的任何不良影响和/或临床益处。
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引用次数: 0
Gas sensing properties of tungsten organometallic-PANi thin film at room temperature 室温下有机金属钨-聚苯胺薄膜的气敏性能
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504403
I. S. Zaine, Z. M. Zabidi, A. N. Alias, M. H. Jumali
Tungsten organometallic sol and tungsten-organometallic-PANi sol were deposited onto silicon substrates by a sol-gel spin coating technique. XRD characterization showed that the WO3 monoclinic crystal structure was formed after WO3 powder was annealed at 400 °C for 2 hours. Microstructural studies by SEM indicate that addition of commercial polyaniline (PANI) powder into tungsten organometallic sol caused the film to be flat and smooth. Tungsten organometallic sensor was responsive towards isopropanol vapor but the response decrease with time. Reuse of this sensor for the next detection showed that the sensor was not responsive to ethanol vapor. The addition of PANi into tungsten organometallic sol improved the sensing properties of the sensor. Tungsten organometallic-PANi sensor exhibited good reversibility, reusability and was responsive towards isopropanol and ethanol vapors.
采用溶胶-凝胶自旋镀膜技术在硅衬底上制备了钨金属有机溶胶和钨-金属有机-聚苯胺溶胶。XRD表征表明,WO3粉末在400℃下退火2小时后,形成WO3单斜晶结构。SEM显微结构研究表明,在钨金属有机溶胶中加入商品聚苯胺(PANI)粉末,使膜变得平坦光滑。钨类有机金属传感器对异丙醇蒸汽有响应,但响应随时间的延长而降低。在下次检测中再次使用该传感器表明,该传感器对乙醇蒸气无响应。在钨金属有机溶胶中加入聚苯胺,提高了传感器的传感性能。钨系有机金属-聚苯胺传感器具有良好的可逆性、可重复使用性和对异丙醇和乙醇蒸气的响应性。
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引用次数: 0
Preparation and characterization of multichannel catalyst monolith using ZSM-5 zeolite ZSM-5沸石制备多通道催化剂单体及表征
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504393
Sharifah Noor Munirah S. M Yunus, K. Ismail, K. Hamid, R. Alias, M. Musa, Muhd Hafiz Ramley, Dicky Zulkainey Abd Aziz
Catalytic cracking is an invented process to improve the yield of biofuels from vegetable oil. Currently, catalytic cracking reaction is carried out on the powder catalyst placed in the lab reactor where these catalysts are difficult to regenerate. The purpose of this study is to prepare and characterize a structured catalyst termed as multichannel catalyst monolith for catalytic cracking of palm oil conversion to liquid fuels with respect to surface morphology, BET surface area and crystallinity. Woven Stainless Steel Wire Mesh (WSSWM) was used as a multichannel catalyst monolith substrate, which is then coated with a zeolite catalyst by using dip-slurry coating technique. The ZSM-5 zeolite powders were used as a catalyst with silica-alumina mole ratio (SiO2/Al2O3) of 50. The coated WSSWM was kept at room temperature for 12 hours, followed by drying process and thermal treatment to ensure the coating layer attached strongly onto wire mesh surface. The BET surface area, crystalline, and surface morphology of structured catalysts were examined by Nitrogen Adsorption, X-ray Diffraction (XRD), and Scanning Electron Microscope (SEM), respectively. Analysis of the catalyst characterization indicates its potential to be applied as a catalyst in catalytic cracking of palm oil.
催化裂化是一种从植物油中提高生物燃料产量的新发明。目前,催化裂化反应是在实验室反应器中放置的粉末催化剂上进行的,这些催化剂很难再生。本研究的目的是制备和表征一种结构催化剂,称为多通道催化剂单体,用于棕榈油转化为液体燃料的催化裂化,涉及表面形貌,BET表面积和结晶度。以编织不锈钢丝网(WSSWM)作为多通道催化剂的整体基片,采用浸浆涂覆技术在其表面涂覆沸石催化剂。ZSM-5分子筛粉作为催化剂,硅铝摩尔比(SiO2/Al2O3)为50。涂层后的WSSWM在室温下保存12小时,然后进行干燥和热处理,以确保涂层牢固地附着在丝网表面。采用氮吸附、x射线衍射(XRD)和扫描电镜(SEM)对结构催化剂的BET比表面积、晶体形貌和表面形貌进行了表征。对催化剂的性能分析表明,该催化剂具有作为棕榈油催化裂化催化剂的应用潜力。
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引用次数: 0
Issues on construction waste: The need for sustainable waste management 建筑废物问题:可持续废物管理的需要
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504333
S. Nagapan, I. Rahman, A. Asmi, A. Memon, I. Latif
Construction wastes have become a pressing issue in many developing countries and have adverse effects on environment, economy and social aspects. Illegal dumping is a common issue created from the physical construction waste and besides that non physical waste like cost and time overruns are not properly addressed among the construction players. This paper explores the impacts of construction on sustainable construction and contributing causes which will help the practitioners to formulate ways in avoiding or reducing the waste. It also highlights the sustainable approach in managing the construction waste as practice.
在许多发展中国家,建筑垃圾已成为一个紧迫的问题,并对环境、经济和社会等方面产生了不利影响。非法倾倒是有形建筑垃圾产生的一个普遍问题,此外,非有形浪费,如成本和时间超支,没有得到妥善解决。本文探讨了建筑对可持续建筑的影响及其成因,有助于从业者制定避免或减少浪费的方法。报告亦强调以可持续的方式管理建筑废物。
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引用次数: 82
Static hole error analysis within laminar and turbulent regime using CFD approach 用CFD方法分析层流和湍流状态下的静孔误差
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504426
Tan Wee Choon, A. AnasRahman, Tan Kia Yeong, Lim Eng Aik
This project is regarding conduct static hole error analysis on Venturi Tube using CFD approach in order to having better visualization of this phenomenon. Based on the dimensionless analysis, relevant parameters to static hole error are identified and the effect of ratio of pressure tap depth to pipe diameter range 0.4, 1.0, 1.5, 2.0, 2.5 and 3.0 and ratio of pressure tap diameter to pipe diameter range 0.02, 0.04, 0.06 and 0.08 were simulated in both laminar and turbulent flow regime. The results were compared with journal paper's results for validation with error of 1.86%. Besides that, results from static hole error analysis shows both hole diameter and depth of hole can influence the static pressure measurement.
本项目拟采用CFD方法对文丘里管进行静孔误差分析,以便更好地可视化这一现象。在无量纲分析的基础上,确定了影响静孔误差的相关参数,并模拟了层流和湍流两种流动状态下,压锥深度与管径之比分别为0.4、1.0、1.5、2.0、2.5和3.0以及压锥直径与管径之比分别为0.02、0.04、0.06和0.08的影响。将结果与期刊论文结果进行对比验证,误差为1.86%。此外,静孔误差分析结果表明,孔直径和孔深对静压测量都有影响。
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引用次数: 1
The effect of MWCNTs on the rubber-toughened epoxy nanocomposites MWCNTs对橡胶增韧环氧纳米复合材料的影响
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504425
M. Tarawneh, S. Ahmad, K. Zarina
This paper investigated the mechanical properties of rubber-toughened epoxy resins reinforced with multi-walled carbon nanotubes (MWCNTs). Rubber-toughened epoxy resins were prepared using the mechanical stirring method and molded into samples with compression molding with different amount of MWCNTs (0.5wt%–3wt%). The bending modulus, bending strength and impact strength increased by almost 125%, 20% and 35% respectively, at 1%wt MWCNTs compared with rubber-toughened epoxy. A scanning electron micrograph (SEM) confirms the effect of good dispersion of MWCNTs and their interfacial bonding in the matrix.
研究了多壁碳纳米管增强橡胶增韧环氧树脂的力学性能。采用机械搅拌法制备橡胶增韧环氧树脂,并加入不同数量的MWCNTs (0.5wt% ~ 3wt%)进行压缩成型。与橡胶增韧环氧树脂相比,在1%wt的MWCNTs下,其弯曲模量、弯曲强度和冲击强度分别提高了近125%、20%和35%。扫描电镜(SEM)证实了MWCNTs在基体中的良好分散及其界面结合的效果。
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引用次数: 1
Preliminary qualitative findings on technology adoption of Malaysian SMEs 马来西亚中小企业采用技术的初步定性调查结果
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504273
N. H. Abdullah, A. Shamsuddin, E. Wahab, N. A. Hamid
Technology has been recognized as one of strategic resources for sustaining competitiveness among firms regardless of their sizes. Challenges in globalizations and strategic alliances are some of the issues underpinning technology adoption among SMEs. However, existing models on technology adoption have not provided sufficient insights on factors that could influence the successful adoption of technology among SMEs in Malaysia. In particular, uniqueness of SMEs characteristics, especially in terms of pervasive influence of SMEs' owner-managers, has not been considered. Therefore, this study aims to identify significant factors that could have pervasive influence on technology adoption among SMEs in Malaysia by integrating internal and external factors together with the SME unique characteristics. A preliminary study was conducted to propose the SME technology adoption model to validate the influence of external factors, internal factors and SMEs' owner-manager characteristics. This study employed multiple case study strategy as its research design and interviews as primary data collection method. Collected data were analyzed using thematic analyses to identify recurring factors across cases. The findings showed that notwithstanding of the technologies adopted by the firms, internal factors and SME's owner-managers characteristics have significant influence on technology adoption among SMEs.
技术已被公认为企业之间保持竞争力的战略资源之一,无论其规模大小。全球化和战略联盟中的挑战是中小企业采用技术的一些基础问题。然而,现有的技术采用模型并没有对可能影响马来西亚中小企业成功采用技术的因素提供足够的见解。特别是,中小企业特征的独特性,特别是中小企业所有者-管理者的普遍影响,没有得到考虑。因此,本研究旨在通过整合内部和外部因素以及中小企业的独特特征,找出可能对马来西亚中小企业技术采用产生普遍影响的显著因素。通过初步研究,提出了中小企业技术采用模型,验证了外部因素、内部因素和中小企业业主-经营者特征对技术采用的影响。本研究采用多案例研究策略作为研究设计,访谈为主要数据收集方法。使用专题分析对收集的数据进行分析,以确定病例之间的重复因素。研究结果表明,尽管企业采用了技术,但内部因素和中小企业的所有者-管理者特征对中小企业的技术采用有显著影响。
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引用次数: 28
Customer Relationship Management (CRM) implementation: A soft issue in knowledge management scenario 客户关系管理(CRM)实施:知识管理场景中的软问题
Pub Date : 2012-12-01 DOI: 10.1109/CHUSER.2012.6504363
N. Ariffin, A. Hamdan, K. Omar, Norjansalika Janom
Knowledge Management (KM) implementation is mainly linked to soft issues such as organizational culture and people. Recently, most organizations are struggling to effectively use KM tools and techniques. Previous study shows that there is a relationship between KM and Customer Relationship Management (CRM). KM, in particular, has been defined as the process of capturing the collective expertise and intelligence in an organization and using them to foster innovation through continued organizational learning whereas obtaining customer-related knowledge is specified as the means to attain CRM objectives. Since a major part of that expertise and intelligence refers to customers, it is concluded that CRM is strongly related to KM and especially to customer knowledge management. CRM is a combination of people, processes and technology that seeks to understand a company's customers. CRM has evolved from advances in information technology and organizational changes in customer centric processes. Managing a successful CRM implementation requires an integrated and balanced approach to technology, processes and people. This paper discuss about the implementation of CRM in Research and Development Centers of Public Universities in Malaysia. The purpose of this study is to investigate the current scenario of CRM implementation Research and Development Centers of Public Universities in Malaysia and what are their challenges in its implementation. This study has conducted the structured interview session with top management of eight public universities. Besides, a questionnaire was distributed to the R & D staffs in those eight public universities. Statistical analysis was carried out on data collected from 40 completed questionnaires. Descriptive analysis and correlation test has been performed to investigate the hypotheses. This study indicates that organization CRM knowledge has a relationship with organizational issues such as human, culture, financial and technology issues. Suggestions as to what future research should indicate are also made.
知识管理(KM)的实施主要与组织文化和人员等软问题有关。最近,大多数组织都在努力有效地使用知识管理工具和技术。已有研究表明,知识管理与客户关系管理(CRM)之间存在一定的关系。特别是知识管理,它被定义为在组织中获取集体的专业知识和智慧,并利用它们通过持续的组织学习来促进创新的过程,而获取与客户相关的知识则被指定为实现客户关系管理目标的手段。由于专业知识和智力的主要部分涉及客户,因此得出的结论是,CRM与知识管理,特别是与客户知识管理密切相关。客户关系管理是人、流程和技术的结合,旨在了解公司的客户。客户关系管理是从信息技术的进步和以客户为中心流程的组织变革中发展而来的。管理一个成功的CRM实施需要对技术、流程和人员采用集成和平衡的方法。本文对马来西亚公立大学研发中心实施客户关系管理进行了探讨。本研究的目的是调查马来西亚公立大学研发中心实施客户关系管理的现状,以及他们在实施过程中面临的挑战。本研究对八所公立大学的高层管理人员进行了结构化访谈。此外,对这8所公立大学的研发人员进行问卷调查。对已完成的40份问卷数据进行统计分析。对假设进行了描述性分析和相关检验。本研究表明,组织CRM知识与组织的人力、文化、财务和技术等问题存在关系。文章还对未来的研究提出了建议。
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引用次数: 11
期刊
2012 IEEE Colloquium on Humanities, Science and Engineering (CHUSER)
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