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Genetic association study of P2x7 A1513C(rs 3751143) polymorphism and susceptibility to pulmonary tuberculosis: A meta-analysis based on the findings of 11 case-control studies

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Asian Pacific Journal of Tropical Medicine 2016年第12期9卷 1126-1134页

作者： Eyad M.A.Alshammari Raju K.Mandal mohd Wahid Sajad A.Dar Arshad Jawed Mohammed Y.Areeshi Saif Khan md.Ekhlaque Ahmed Khan Aditya K.Panda Shafiul Haque Department of Clinical Nutrition College of Applied Medical SciencesUniversity of Ha’il Research and Scientific Studies Unit College of Nursing & Allied Health SciencesJazan University The University College of Medical Sciences & GTB Hospital (University of Delhi) Centre for Life Sciences Central University of Jharkhand

Objective:To summarize the precise association between pulmonary tuberculosis(PTB) and P2x7 A1513 C gene ***:PubMed and Google Scholar web-databases were searched for the studies reporting the association of P2x7 A1513 C polymorphism and PTB risk.A meta-analysis was performed for the selected case-control studies and pooled odds ratios(ORs) and 95%confidence intervals(95%CIs) were calculated for all the genetic ***:Eleven studies comprising 2 678 controls and 2 113 PTB cases were included in this *** observed overall no significant risk in all the five genetic *** stratified population by the ethnicity,Caucasian population failed to show any risk of PTB in all the genetics *** Asian ethnicity,variant allele(C vs.A:P=0.001;QR=1.375,95%CI=1.159-1.632) and heterozygous genotype(AC ***:P=0.001;OR=1.570,95%CI=1.269-1.944) demonstrated significant increased risk of ***,recessive genetic model(CC+AC ***:P=0.001;OR=1.540,95%CI= 1.255-1.890) also demonstrated increased risk of PTB in ***:Our meta-analysis did not suggest the association of P2x7 A1513 C polymorphism with PTB risk in overall or separately in Caucasian ***,it plays a significant risk factor for predisposing PTB in *** larger sample and expression studies are needed to validate this association.

关键词： Genetic model Meta-analysis Polymorphism P2x7 gene Pulmonary tuberculosis

Gross Pollutants Study in Urban Areas under Tropical Climates

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Journal of Civil Engineering and Architecture 2014年第1期8卷 107-114页

作者： Lariyah mohd Sidek Hidayah Basri Mohamed Roseli Zainal Abidin Lira Chow Hock md Nasir md Nor Nor Azazi Zakaria Centre for Sustainable Technology and Environment (CSTEN) College of Engineering Universiti Tenaga Nasional Kajang43000 Malaysia Drainage and Irrigation Department Humid Tropics Centre Kuala Lumpur Kuala Lumpur 50480 Malaysia Drainage and lrrigation Department River Basin & Coastal Zone Management Kuala Lumpur 50626 Malaysia River Engineering and Urban Drainage Centre (REDAC) Universiti Sains Malaysia Nibong Tebal 14300 Malaysia

Gross pollutants are the primary targeted pollutants in urban catchment management for urban water quality improvement as well as mitigation of flood. Apart from aesthetically unattractive because of its visibility, gross pollutants also contributes to degradation of river water quality and loss of aquatic habitat as it carries harmful pollutants such as oxygen demanding material, hydrocarbons and heavy metals. This study analyzed trend of gross pollutant generated from two urban residential areas located in Selangor, Malaysia. The median value of gross pollutant load obtained from the Amanah Apartment and Bandar Botanic are 347.41 kg/ha/year and 32.46 kg/ha/year, respectively. Relationship between gross pollutant wet load with rainfall depths was derived using regression equation. A significant trend of increasing gross pollutant wet load into drainage system with increasing rainfall depth was observed. The behavior of pollutant load is related to the one observed in Australia.

关键词：有害污染物总值热带气候城镇城市供水污染负荷集水区管理碳氢化合物

Treated Tropical Wood Sawdust-Polypropylene Polymer Composite: Mechanical and Morphological Study

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Journal of Biomaterials and Nanobiotechnology 2011年第4期2卷 435-444页

作者： M. A. M. mohd Idrus S. Hamdan md. Rezaur Rahman md. S. Islam 不详

In this research, composites based on treated tropical sawdust and polypropylene (PP) were prepared using hot press molding machine. Raw sawdust was chemically treated with monomer, 2 - ethylhexyl methacrylate in order to improve the mechanical properties of the composites. The influence of the chemically treated sawdust on the physical and mechanical properties of sawdust-PP composites were investigated at various loading level from 10 wt.% up to 30 wt.%. Results indicate that the mechanical properties of the chemically treated sawdust–PP composites were found to be higher than those of the raw ones respectively. The surface morphology obtained from scanning electron microscopy (SEM) showed that raw sawdust–PP composites possess surface roughness and weak interfacial adhesion between the matrix and the filler while the chemically treated one showed improved filler–matrix interaction. This indicates that better dispersion of the filler with the PP matrix has occurred upon chemical treatment of the filler. Water absorption tests showed that composites prepared from the chemically treated sawdust absorb lower amount of water compared to the ones prepared from raw sawdust, suggesting that hydrophilic nature of the cellulose in the sawdust has significantly decreased upon chemical treatment.

关键词： Wood Sawdust Polypropylene Mechanical Properties Water Absorption

Pseudomonas aeruginosa USM-AR2 culture containing biosurfactant facilitates crude oil distillation process

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Pseudomonas aeruginosa USM-AR2 culture containing biosurfact...

Sauna Technique, Drying Kinetic Modeling and Effectiveness on Solar Drying Compared with Direct Drying in Drying Process of <i>Kappaphycus striatum</i>in Selakan Island Malaysia

2011 International Conference on Biotechnology and Environment Management ( ICBEM 2011）

作者： Nur Asshifa md Noh Salwa mohd Salleh Mohamad Nasir Mohamad Ibrahim Ahmad Ramli mohd Yahya School of Biological Sciences Universiti Sains Malaysia 11800 Minden Penang Malaysia School of Chemical Sciences Universiti Sains Malaysia 11800 Minden Penang Malaysia

Petroleum supplies a large portion of the world’s energy, thereby driving industrial civilization. It remains an important factor in dictating market prices of diverse products and services. Distillation of crude oil is a common fractionation method of petroleum producing desirable products, such as automotive fuel and kerosene. Conventional distillation has been the current fractionation process for decades, producing distillates of interest and is conducted without any involvement of biological materials. The process involves tremendous amount of thermal energy and requiring a long time. This research offers an improved distillation performance and yield. A small amount of rhamnolipid produced from a microbial culture Pseudomonas aeruginosa USM-AR2, is added and mixed thoroughly with the crude oil prior to distillation. This results in a drastic reduction in distillation time without affecting or reducing the quality of the distillate. The pretreatment accelerates the emulsification and biodegradation process by decreasing surface tension and viscosity of oil, which in turn resulted in the shorter distillation times. Reducing the distillation times translates to energy and cost savings in producing petroleum products. Since oil prices affect many other industries, this discovery will have a great impact on the economy.

关键词： rhamnolipid distillation crude oil emulsification Pseudomonas aeruginosa

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Energy and Power Engineering 2014年第9期6卷 303-315页

作者： Majid Khan Majahar Ali Ahmad Fudholi Jumat Sulaiman mohd Hafidz Ruslan Suhaimi md. Yasir Mathematics with Economics Programme School of Science and Technology University Malaysia Sabah Kota Kinabalu Sabah Malaysia Solar Energy Research Institute (SERI) Universiti Kebangsaan Malaysia Bangi Selangor Malaysia Seaweed Research Unit (UPRL) School of Science and Technology University Malaysia Sabah Kota Kinabalu Sabah Malaysia

A sauna drying technique—the solar drier was designed and imposed, constructed and tested for drying of seaweed. The seaweed moisture content was decreased around 50% in 2-day sauna. Kinetic curves of drying of seaweed were known to be used in this system. The non-linear regression procedure was used to fit three different drying models. The models were compared with experimental data of red seaweed being dried on the daily average of air temperature about 40℃. The fit quality of the models was evaluated using the coefficient of determination (R2), Mean Bias Error (MBE) and Root Mean Square Error (RMSE). The highest values of R2 (0.99027), the lowest MBE (0.00044) and RMSE (0.03039) indicated that the Page model was the best mathematical model to describe the drying behavior of sauna dried seaweed. The percentage of the saved time using this technique was calculated at 57.9% on the average solar radiation of about 500 W/m2 and air flow rate of 0.056 kg/s.

关键词： Mathematical Modeling Sauna Technique Drying Curve Moisture Content Seaweed Kappaphycus striatum

DWDM混合光学系统中帧间和信道内四波混频效应的抑制（英文）

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中国光学 2019年第1期12卷 156-166页

作者： Naif Alsowaidi Tawfig Eltaif mohd Ridzuan Mokhtar Faculty of Engineering & Technology Multimedia University Faculty of Engineering Multimedia University

本文提出了光码多分址(CDMA)和光密集波分复用(DWDM)的混合系统,全面研究了四波混频(FWM)的影响。在这个系统中,主要存在两个四波混频问题:包括多址干扰(MAI)和码间干扰(ISI)的帧间四波混频和信道内四波混频。结果表明,综合考虑信道间... 详细信息

本文提出了光码多分址(CDMA)和光密集波分复用(DWDM)的混合系统,全面研究了四波混频(FWM)的影响。在这个系统中,主要存在两个四波混频问题:包括多址干扰(MAI)和码间干扰(ISI)的帧间四波混频和信道内四波混频。结果表明,综合考虑信道间和信道内四波混频的影响,最佳发射功率可选为18 d Bm。当发射功率大于18 d Bm时,混合系统的误码率(BER)将增加。基于此,本文提出了一种电光相位调制器(EOPM)模块,将其放置在波分复用器之后,通过抑制信道内四波混频的影响,同时调制所有波长信号的相位,从而增加混合系统的非线性容限,这极大地改善了基于OOK传输的光学CDMA-DWDM混合系统的性能。此外,由于多对角线(md)结构具有零互相关特性,通过使用多对角线识别序列码可以减少多址干扰的影响。结果还表明,CDMA技术与色散相结合有助于降低信道间四波混频的影响。此外,识别序列码间隔在减轻码间干扰中起着至关重要的作用,如结果所示,当识别序列码间隔压缩至比特持续时间的25%时,可以避免码间干扰,此时所提出的混合系统的性能最佳。

关键词：光码多分址光密集波分复用帧间信道内四波混频多址干扰码间干扰电光相位调制器

Improving Inspection Data Quality in Pipeline Corrosion Assessment

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Improving Inspection Data Quality in Pipeline Corrosion Asse...

Two-degree-of-freedom Robust Control for a Non-minimum Phase Electro-hydraulic System

International Conference on Computer Engineering and Applications（ICCEA 2009）

作者： Mazura Mat Din md.Asri Ngadi Norhazilan mohd.Noor Faculty of Computer Science & Information Systems Universiti Teknologi Malaysia Faculty of Civil Engineering Universiti Teknologi Malaysia

The advances of computational methods and tools can greatly support other areas in doing tasks from the most tedious or repetitive to the most *** this paper,these advances were manipulated in civil structures maintenance specifically in pipeline corrosion *** paper describes mechanize method developed to improved the quality of In-line inspection（ILI） data by automatically detect and quantify important parameters for future prediction of corrosion *** focal process in this system includes data conversion,data filtering,parameter tolerance or sizing configuration,matching,and data trimming.A sensitivity analysis using linear regression method was used to correlates defects from one inspection to the *** and advantage gain from this mechanize system is threefold:timeliness,accuracy and consistencies in data sampling.

关键词： Mechanize matching system ILI data sensitivity analysis

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Two-degree-of-freedom Robust Control for a Non-minimum Phase...

Synthesis and controlled release of cloprop herbicides from cloprop-layered double hydroxide and cloprop-zinc-layered hydroxide nanocomposites

第24届中国控制与决策会议

作者： Rozaimi Ghazali Yahaya md Sam mohd Fua'ad Rahmat Dirman Hanafi Zulfatman Mechatronic and Robotic Engineering Department Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia86400 Batu Pahat Johor Malaysia Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia81310 Skudai Johor Malaysia

Electro-hydraulic actuator （EHA） system inherently suffers from uncertainties, nonlinearities and time-varying in its model parameters which makes the modeling and controller designs are more complicated. The main objective of this paper is to perform a robust control design using discrete-time sliding mode control （DSMC） with two-degree-of-freedom control strategy. The proposed controller consists of feedback and feedforward combination which capable to reduce phase lag during the trajectory tracking of EHA system. The feedforward controller is developed by implementing the zero phase error tracking control （ZPETC） technique which the main difficulty arises from the nonminimum phase system with no stable inverse. Finally, a chaotic trajectory tracking is performed in the experimental works to show the robustness of DSMC controller and performance comparison is made with Linear-Quadratic-Regulator （LQR） and Proportional-Integral-Derivative （PID） controllers. The findings show that the proposed controller with ZPETC outperforms the LQR and PID controllers in terms of tracking accuracy.

关键词： Electro-hydraulic Actuator System Sliding Mode Control Trajectory Tracking Control and Two-degree-freedom Control Structure

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Open Journal of Inorganic Chemistry 2014年第1期4卷 1-9页

作者： Norhayati Hashim mohd Zobir Hussein Illyas md Isa Azlan Kamari Azmi Mohamed Adila Mohamad Jaafar Hafsah Taha Department of Chemistry Faculty of Science and Mathematics Universiti Pendidikan Sultan Idris Tanjong Malim Malaysia Department of Chemistry Faculty of Science and Mathematics Universiti Pendidikan Sultan Idris Tanjong Malim Malaysia Nanotechnology Research Centre Faculty of Science and Mathematics Universiti Pendidikan Sultan Idris Tanjong Malim Malaysia Department of Chemistry Faculty of Science Universiti Putra Malaysia Serdang Malaysia

Two phenoxyherbicide nanocomposites, namely cloprop-layered double hydroxide and cloprop-zinc- layered hydroxide nanocomposites, have been synthesized by using co-precipitation and direct reaction method. PXRD pattern showed an expansion of interlayer spacing with the value of 21.0 Åand 22.7 Åfor cloprop-layered double hydroxide and cloprop-zinc-layered hydroxide nanocomposite, respectively. It is evident from FTIR and elemental analyses that both nanocomposites were successfully intercalated between the interlayers of layered metal hydroxide. Controlled release of cloprop anion from interlayer of nanocomposites for both cloprop-layered double hydroxide and cloprop-zinc-layered hydroxide nanocomposite into phosphate solution was rapid initially and slow thereafter. The percentage of accumulated release of cloprop anion from cloprop-zinc-layered hydroxide nanocomposite was slightly higher than that from cloprop-layered double hydroxide nanocomposite. Kinetic behavior of cloprop release was governed by pseudo-second-order for cloprop-layered double hydroxide nanocomposite while parabolic diffusion for cloprop-zinc-layered hydroxide nanocomposite. Results from this study highlight the potential of both nanocomposites as capsulated material for controlled release of cloprop phenoxyherbicides anion.

关键词： Cloprop Cloprop-Layered Double Hydroxide Cloprop-Zinc-Layered Hydroxide Nanocomposite Controlled Release Kinetic Study