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Impedance analysis of Labisia pumila plant water status

Information Processing in Agriculture 2015年第3期2卷 161-168页

作者： diyana jamaludin Samsuzana Abd Aziz Desa Ahmad Hawa Z.E.Jaafar Department of Biological and Agricultural Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Department of Crop Science Faculty of AgricultureUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia

Labisia pumila(Kacip fatimah)is a popular medicinal plant in *** constituents of this plant have been reported to possess anticancer,antioxidant and anti-inflammatory *** growth and production of *** is greatly influenced by the plant water *** techniques to measure plant water status are generally based on the plant soil moisture,which apparently did not indicate the real water content inside the *** are other techniques to measure directly on the plant such as based on leaf water potential(LWP)and relative water content(RWC).However,these techniques are destructive and time *** this study,four levels of evapotranspiration replacement(ER)treatment which were 100%ER,75%ER,50%ER and 25%ER was applied to 30 polybags of *** *** plant water status was measured using an impedance spectroscopy technique.A pair of electrocardiogram(ECG)electrode connected to an impedance analyzer board was used to measure the impedance value of the leaf samples *** water status parameters such as LWP,RWC,volumetric moisture content(VMC),and leaf thickness were measured using standard *** results show that after 20 weeks of treatment,25%ER had the highest impedance value ranged from 0.10 MX to 0.15 MX at the frequency of 70–100 *** resistance of 100%ER at 20 weeks of treatment increased from 0.70 kX to 1.23 kX as the reactance decreased from 0.51 kX to 0.28 ***,the resistance of 25%ER increased from 1 kX to 1.10 kX as the reactance decreased from 0.88 kX to 0.83 *** polynomial regression of impedance measurements with plant water status parameters(VMC,leaf thickness,LWP and RWC)shows that LWP and RWC had the highest R2(0.78,0.73).The results show that impedance measurement technique is auspicious to evaluate plant water status.

关键词： Impedance spectroscopy Plant water status Labisia pumila Impedance Reactance Resistance

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Structural Restoration of Carbonate Platform in the Southern Part of Central Luconia, Malaysia

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Journal of Earth Science 2018年第1期29卷 155-168页

作者： Siti Nur Fathiyah jamaludin Manuel Pubellier David Menier Faculty of Geosciences & Petroleum Engineering Universiti Teknologi PETRONAS Bandar Seri Iskandar 32610 Perak Malaysia UMR 8538 du CNRS Ecole Normale Supérieure 24 rue Lhomond 75231 Paris Cedex 05 France Geosciences Marines et Geomorphologie du Littoral Universite Europeenne de Bretagne UMR CNRS 6538 rue Yves Mainguy 56017 Vannes Cedex France

Carbonates of Central Luconia, Malaysia, had been serving as hydrocarbon reservoirs for more than 25 years. However, the relationship and impacts of extensive tectonic events to the growth of Miocene carbonates in Central Luconia have not been revealed sufficiently. In this work, two carbonates platforms in the southern part of Central Luconia were used for detailed interpretation and seismic based structural restoration. This work had provided new insight for the interpreta- tion of carbonate growth in Central Luconia and its association with the surrounding tectonic. This work suggested three possible tectonic evolutions from Late Oligocene to Pliocene are responsible for the growth of carbonates in Central Luconia. These stages are equivalent with pre-carbonate stage （Late Oligocene-Early Miocene）, syn-carbonate stage （Middle-Late Miocene） and post-carbonate stage （Pliocene）. Rifting of the South China Sea and subduction of proto-South China Sea are believed to be responsible for the development of faulting during pre-carbonate stage, while movement of the ancient Baram Line is thought to control the parallel striking direction of normal faults during syn- carbonate stage. Finally, subsidence and compaction due to the overburden clastic materials from the prograding deltas is considered as the main reason for the impacts of gravitational tectonics in this area, which corresponding to the post-carbonate stage.

关键词： carbonate platforms structural restoration carbonate growth seismic interpretation,Central Luconia Province.

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Survey of Robotics in Education, Taxonomy, Applications, and Platforms during COVID-19

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Computers, Materials & Continua 2021年第4期67卷 687-707页

作者： Hussain A.Younis A.S.A.Mohamed R.jamaludin M.N.Ab Wahab College of Education for Women University of Basrah BasrahIraq School of Computer Sciences Universiti Sains MalaysiaMinden11800PenangMalaysia Centre For Instructional Technology&Multimedia Universiti Sains MalaysiaMinden11800PenangMalaysia

The coronavirus disease 2019(COVID-19)is characterized as a disease caused by a novel coronavirus known as severe acute respiratory coronavirus syndrome 2(SARS-CoV-2;formerly known as 2019-nCoV).In December 2019,COVID-19 began to appear in a few *** the beginning of 2020,it had spread to most countries across the *** is when education challenges began to *** COVID-19 crisis led to the closure of thousands of schools and universities all over the *** a situation requires reliance on e-learning and robotics education for students to continue their studies to avoid the mingling between people and *** relation to this alternative learning solution,the present study was conducted.A systematic literature review on educational robotics(ER)keywords between 2015–2020 was carried out for the purpose to review a total of 2253 articles from the selected sources;Scopus(452),Taylor&Francis(311),Science Direct(427),IEEE Xplore(221),and Web of Science(842).This review procedure was labelled as Taxonomy *** ltering Taxonomy 1,it was found that 98 scientic articles formed the so-called Taxonomy II that was categorized into six categories:(i)Robotics concepts,(ii)Device,(iii)Robotic applications,(iv)Manufacturing robots,(v)Robotics analysis,and(vi)Education/*** this study,only 35 articles in this specic eld were selected,of which were then assigned into three categories:(i)Application,(ii)Platform,and(iii)*** results show that the application category carries 17.4%,platform 20%,and education 22.85%.This study serves as the application platform to help students,academics,and researchers.

关键词： COVID-19 educational educational robotics taxonomy application platform

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Influence of surface treatments on fatigue life of a two-stroke free piston linear engine component using random loading

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第11期7卷 1819-1830页

作者： RAHMAN M.M. ARIFFIN A.K. jamaludin N. HARON C.H.C. Department of Mechanical and Materials Engineering Faculty of Engineering Universiti Kebangsaan Malaysia 43600 UKM Bangi Selangor DE Malaysia

This paper describes the finite element (FE) analysis technique to predict fatigue life using the narrow band frequency response approach. The life prediction results are useful for improving the component design methodology at the very early development stage. The approach is found to be suitable for a periodic loading but requires very large time records to accurately describe random loading processes. This paper is aimed at investigating the effects of surface treatments on the fatigue life of the free piston linear engine’s components. Finite element modelling and frequency response analysis were conducted using computer aided design and finite element analysis commercial codes, respectively. In addition, the fatigue life prediction was carried out using finite element based fatigue analysis commercial code. Narrow band approach was specially applied to predict the fatigue life of the free piston linear engine cylinder block. Significant variation was observed between the surface treatments and untreated cylinder block of free piston engine. The obtained results indicated that nitrided treatment yielded the longest life. This approach can determine premature products failure phenomena, and therefore can reduce time to market, improve product reliability and customer confidence.

关键词： Vibration fatigue Finite element (FE) Power spectral density function Frequency response Surface treatment

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Aristolochia gehrtii inhibits liver toxicity and apoptosis in Schistosoma malayensis infection

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Asian Pacific Journal of Tropical Medicine 2014年第9期7卷 685-692页

作者： Khaled M.M.Koriem Razmy E.Shahabudin Rafiq Z.jamaludin Advanced Medical and Dental Institute(AMDI) Universiti Sains Malaysia(USM)13200 Kepala BatasPulau PinangMalaysia Department of Medical Physiology National Research Centre12622 DokkiGizaEgypt

Objective:To evaluate a protective effect of Aristolochia gehrtii(***)leaves to inhibit liver toxicity and apoptosis in Schistosoma malayensis(***)***:Forty male albino mice were divided into four equal groups:group 1 control including noninfected healthy mice and groups 2,3&4 subcutaneously infected with *** cercariae where groups 3&4 pretreated with *** leaves(200 mg/kg,bwt)&cinnamoylamide(250mg/kg,bwt),***:*** caused a significant increase in serum AST,ALT,ALP,MDA,NO,bilirubin,urea,creatinine,total cholesterol,LDL,triglycerides,and HDL *** pretreatment of A,gehrtii leaves and cinnamoylamide significantly inhibited that *** the other hand,*** induced a significant decrease in serum total protein,albumin,globulin,albumin/globulin ratio,blood SOD and GPx,while *** leaves and cinnamoylamide pretreatment increased the above *** with *** leaves and cinnamoylamide to *** infected mice increased p53 expression but decreased *** results were supported by hislopalholqgical ***:*** inhibits liver toxicity and apoptosis in *** infection and this effect is associated with the major cinnamoylamide ingredient of *** leaves.

关键词： Schistosoma malayensis Aristolochia gehrtii Aristolochiaceae Liver Apoptosis Mice

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Effect of climate factors on the incidence of hand, foot, and mouth disease in Malaysia: A generalized additive mixed model

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Infectious Disease Modelling 2021年第1期6卷 997-1008页

作者： Nurmarni Athirah Abdul Wahid jamaludin Suhaila Haliza Abd.Rahman Department of Mathematical Sciences Faculty of ScienceUniversiti Teknologi Malaysia81310Johor BahruJohorMalaysia UTM Centre for Industrial and Applied Mathematics(UTM-CIAM) Ibnu Sina Institute for Scientific and Industrial ResearchUniversiti Teknologi Malaysia81310Johor BahruJohorMalaysia

Climate change is one of the critical determinants affecting life cycles and transmission of most infectious agents,including malaria,cholera,dengue fever,hand,foot,and mouth disease(HFMD),and the recent Corona-virus *** has been associated with a growing number of outbreaks resulting in fatal complications since the late *** outbreaks may result from a combination of rapid population growth,climate change,socioeconomic changes,and other lifestyle ***,the modeling of climate variability and HFMD remains unclear,particularly in statistical theory *** statistical relationship between HFMD and climate factors has been widely studied using generalized linear and additive *** dealing with time-series data with clustered variables such as HFMD with clustered states,the independence principle of both modeling approaches may be ***,a Generalized Additive Mixed Model(GAMM)is used to investigate the relationship between HFMD and climate factors in *** model is improved by using a first-order autoregressive term and treating all Malaysian states as a random *** method is preferred as it allows states to be modeled as random effects and accounts for time series data *** findings indicate that climate variables such as rainfall and wind speed affect HFMD cases in *** risk of HFMD increased in the subsequent two weeks with rainfall below 60 mm and decreased with rainfall exceeding 60 ***,a two-week lag in wind speeds between 2 and 5 m/s reduced HFMD's *** results also show that HFMD cases rose in Malaysia during the inter-monsoon and southwest monsoon seasons but fell during the northeast *** study's outcomes can be used by public health officials and the general public to raise awareness,and thus,implement effective preventive measures.

关键词： Autoregressive term Climate change Generalized additive mixed model HFMD Infectious disease

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In vitro antiplasmodial and antioxidant activities of bisbenzylisoquinoline alkaloids from Alseodaphne corneri Kosterm

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Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 320-324页

作者： Azeana Zahari Abdulwali Ablat Yasodha Sivasothy jamaludin Mohamad Muhammad I. Choudhary Khalijah Awang Department of Chemistry Faculty of Science.University of Malaya.50603 Kuala Lumpur Institute of Biological Sciences Faculty of Science.University of Malaya.50603 Kuala Lumpur.Malaysia H.E.J.Research Institute of Chemistry International Center for Chemical and Biological SciencesUniversity of Karachi

Objective:To study antiplasmodial and antioxidant activities of the isolation of alkaloids from the active dichloromcthanc extract of Alseodaphne ***:Phytochemical studies of the crude extract led to the isolation of six alkaloids using recycle high performance liquid chromatography and preparative thin layer *** antiplasmodial activity of the isolated compounds was evaluated usingthe histidinc-rich protein II *** isolated alkaloids were also tested for their antioxidant activity using three different assays:*** reducing ability of plasma and metal chelating ***:Malaria infection caused the formation of free radicals which subsequently led to oxidative stress and *** antioxidant properties of the alkaloids under investigation revealed that in addition to the aniiplasmodial activity,the alkaloids could also prevent oxidative stress.(+)-laurotetanine and(+)-norstephasubine exhibited strong antiplamodial activities with IC_(50) values of 0.189 and 0.116 μ***:Interestingly,the two most potent compounds that exhibit aniiplasmodial activity also exhibit good antioxidant *** crude dichloromcthanc extract and the isolated compounds exert substantial aniiplasmodial and antioxidative activities which in turn suppress oxidative stress and cause less damage to the host.

关键词： Bisbenzylisoquinoline Laurotetanine Norstephasubine Antiplasmodial Antioxidant Oxidative stress

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Implications COVID-19 on Performance and Energy Management in the Production Electricity

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Computers, Materials & Continua 2021年第10期69卷 895-911页

作者： Noor Shakir Mahmood Ahmed Ali Ajmi Shamsul Sarip Khairur Rijal jamaludin Hazilah Mad Kaidi Hayati Abdul Talib University of Technology Ministry of Electricity GCEP/Middle region BaghdadIraq Razak Faculty of Technology and Informatics UTMKuala Lumpur54100Malaysia

The COVID-19 pandemic has directly impacted the electric power industry;the energy sector has experienced huge losses in electricity *** losses have also affected the reliability of communication and employees’performance,hence destabilizing the electric power *** article aims at achieving two ***,analyzing the impact of the COVID-19 pandemic on the communication of performance(human error and human factors)and energy management in electricity ***,to develop a conceptual framework model to alleviate effects of the pandemic on the power sector and then improve energy management and human *** paper involves investigating the influence of the COVID19 pandemic on the global production of electricity in the first quarters of 2019 and 2020.A conceptual model was developed based on a case ***,to ensure reliability,a variable,namely COVID-19,was used as a moderator to examine the effects of the independent and dependent *** results show that scores for the internet of things(IoT)with awareness and communication(A&C)and workplace environment management were high with Cronbach’s alpha value of 0.87 for the IoT and 0.89 for A&*** numbers are important indicators of factors that could affect performance and energy management and should not be overlooked by the top *** results also indicate that the pandemic has had a direct effect on the electricity production sector,and the conceptual framework model revealed that COVID-19,as a moderator,has a direct effect on the variables that significantly affect the improvement of both energy management and employee *** case study’s results confirm the poor performance in power plant maintenance and operation,in which human error would increase especially in Iraqi power plants that have not yet adopted any internationally recognized standards for energy *** paper contributes to the literature studying COVID-19’s impa

关键词： Communication internet of things decision making energy management performance workplace environment

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Intelligent Integrated Model for Improving Performance in Power Plants

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Computers, Materials & Continua 2022年第3期70卷 5783-5801页

作者： Ahmed Ali Ajmi Noor Shakir Mahmood Khairur Rijal jamaludin Hayati Habibah Abdul Talib Shamsul Sarip Hazilah Mad Kaidi Razak Faculty of Technology and Informatics UTM54100Kuala LumpurMalaysia University of Technology Ministry of Electricity GCEP/Middle Region BaghdadIraq

Industry 4.0 is expected to play a crucial role in improving energy management and personnel performance in power *** performance problem in maintaining power plants is the result of both human errors,human factors and the poor implementation of automation in energy *** problem can potentially be solved using artificial intelligence(AI)and an integrated management system(IMS).This article investigates the current challenges to improving personnel and energy management performance in power plants,identifies the critical success factors(CSFs)for an integrated intelligent framework,and develops an intelligent framework that enables power plants to improve *** theoretical basis is founded on a systematic literature review to locate 110 out of 3108 papers studied carefully to examine the performance architecture that best enables effective *** findings from this literature review are combined with expert judgment and the big data advantages of AI applications to develop an intelligent *** are collected from a power plant in *** ensure the reliability of the proposed model,various hypotheses are tested using structural equation *** results confirm that the measurement model is acceptable,and that the hypotheses are supported and significant.A case study demonstrates the strong relationship and significance between big data of performance and the *** is hoped that this model will be adopted to enable performance improvement in power plants.

关键词： Industry 4.0 artificial intelligence critical success factors decision making integrated management system maintenance

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Novel Approach to Energy Management via Performance Shaping Factors in Power Plants

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Computers, Materials & Continua 2022年第12期73卷 5025-5039页

作者： Ahmed Ali Ajmi Noor Shakir Mahmood Khairur Rijal jamaludin Hayati Habibah Abdul Talib Shamsul Sarip Hazilah Mad Kaidi Razak Faculty of Technology and Informatics UTMKuala Lumpur54100Malaysia University of Technology Ministry of Electricity GCEP/Middle Region BaghdadIraq

The literature that a lack of integration between the performance shaping factors(PSFs)and the energy management performance(EMP)is one of the critical problems that prevent performance improvement and reduces the power plant’s *** solve this problem,this article aims to achieve two main objectives:(1)Systematically investigate and identify the critical success factors(CSFs)for integration with PSFs and EMP;(2)Develop a novel modelling approach to predict the performance of power plants based on innovative integrated *** research methodology is grounded on the theoretical and practical approach to improving *** Newcastle Ottawa Scale(NOS)was used to assess the quality of the literature that met the *** ensure the reliability and accuracy of the proposed model,the researchers developed a hypothesis and evaluated the CSFs via a case study in the Iraqi power *** findings of this study succeeded in developing a novel modeling approach to predict the performance by integrating the CSFs of both the PSFs and EMP to increase the positive interaction and energy efficiency of power *** results confirmed the validity of the selected hypotheses and verified the positive and important relationship with the success and improvement of the performance in power ***,the lack of consistency and balance in the current studies indicates that the performance strategy in power plants did not receive sufficient attention and needs further investigations.

关键词： Intelligent model energy policy energy use integrated system energy efficiency framework

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