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Bio-Fertilizer,Ground Magnesium Limestone and Basalt Applications May improve Chemical Properties of Malaysian Acid Sulfate Soils and Rice Growth

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Pedosphere 2014年第6期24卷 827-835页

作者： Q.A.PANHWAR U.A.NAHER O.RADZiAH J.SHAMSHUDDiN i.mohd razi Department of Land Management Faculty of AgricultureUniversity Putra MalaysiaSerdang 43400 (Malaysia) institute of Tropical Agriculture University Putra MalaysiaSerdang 43400 (Malaysia) Soil Science Division Bangladesh Rice Research InstituteGazipur 1701 (Bangladesh)

Acid sulfate soils are normally not suitable for crop production unless they are appropriately ameliorated. An experiment was conducted in a glasshouse to enhance the growth of rice, variety MR219, planted on an acid sulfate soil using various soil *** soil was collected from Semerak, Kelantan, Malaysia. Ground magnesium limestone(GML), bio-fertilizer, and basalt(each 4t ha-1) were added either alone or in combinations into the soil in pots 15 d before transplanting. Nitrogen, P and potash were applied at 150, 30, and 60 kg ha-1, respectively. Three seven-day-old rice seedlings were transplanted into each pot. The soil had a p H of 3.8 and contained organic C of 21 g kg-1, N of 1.2 g kg-1, available P of 192 mg kg-1, exchangeable K of 0.05 cmol c kg-1,and exchangeable Al of 4.30 cmol c kg-1, with low amounts of exchangeable Ca and Mg(0.60 and 0.70 cmol c kg-1). Bio-fertilizer treatment in combination with GML resulted in the highest p H of 5.4. The presence of high Al or Fe concentrations in the control soil without amendment severely affected the growth of rice. At 60 d of growth, higher plant heights, tiller numbers and leaf chlorophyll contents were obtained when the bio-fertilizer was applied individually or in combination with GML compared to the control. The presence of beneficial bacteria in bio-fertilizer might produce phytohormones and organic acids that could enhance plant growth and subsequently increase nutrient uptake by rice. Hence, it can be concluded that addition of bio-fertilizer and GML improved rice growth by increasing soil p H which consequently eliminated Al and/or Fe toxicity prevalent in the acid sulfate soil.

关键词： Al toxicity amendments beneficial bacteria Fe toxicity indoleacetic acid organic acids

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Relationships between land use types and urban heat island intensity in Hulu Langat district,Selangor,Malaysia

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Ecological Processes 2023年第1期12卷 461-474页

作者： Muhammad Rendana Wan mohd razi idris Sahibin Abdul Rahim Hazem Ghassan Abdo Hussein Almohamad Ahmed Abdullah Al Dughairi Motrih Al-Mutiry Department of Chemical Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya 30662South SumatraIndonesia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiSelangorMalaysia Department of Environmental Science Faculty of Science and Natural ResourcesUniversiti Malaysia Sabah88400 Kota KinabaluSabahMalaysia Geography Department Faculty of Arts and HumanitiesTartous UniversityTartousSyria Department of Geography College of Arabic Language and Social StudiesQassim UniversityBuraydah 51452Saudi Arabia Department of Geography College of ArtsPrincess Nourah Bint Abdulrahman UniversityRiyadh 11671Saudi Arabia

Background Urban heat island(UHi)is an urban climate phenomenon that primarily responds to urban conditions and land use *** extent of hard surfaces significantly influences the thermal properties of the *** address this issue,a novel approach quantifying the association between land use and UHi is *** study offers a new technique for effectively estimating the effect of land use on the UHi intensity using the combination of urban heat intensity index(UHii)and land contribution index(LCi)derived from Landsat 8 OLi *** time-series thermal effect of land use on the UHi intensity can be determined according to the ratio in mean temperature between specific land use and the whole study *** study was conducted in the Hulu Langat district,Malaysia during *** The UHi intensity rose from 0.19 in 2014 to 0.70 in *** negative value of LCi for vegetation areas and water bodies obtained its negative contribution to the urban heat island,while the positive value of LCi for bare areas and built-up areas showed its positive effect on the urban heat *** LCi value for urban areas showed a significant increase in the 7 years such as 0.51,0.66,0.69,and 0.75 for periods 2014,2016,2018,and 2021,*** change in LCi from 2014 to 2021 for the transformation of bare area and forest was recorded to be 0.23 and−0.02,***,the conversion of forests into urban areas had a negative effect on the increment of UHi *** Overall,these findings are useful for policy-making agency in developing an effective policy for reducing high UHi intensity and planning long-term land use management.

关键词： Geospatial technology Urban heat island Land contribution index Land surface temperature Environment

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Evaluation of inherited Resistance Genes of Bacterial Leaf Blight, Blast and Drought Tolerance in improved Rice Lines

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Rice science 2021年第3期28卷 279-288页

作者： ibrahim Silas AKOS mohd Y.RAFii.mohd razi iSMAiL Shairul izan RAMLEE Noraziyah Abd Aziz SHAMSUDiN Asfaliza RAMLi Samuel Chibuike CHUKWU Senesie SWARAY Momodu JALLOH Laboratory of Climate-Smart Food Crop Production Institute of Tropical Agriculture and Food SecurityUniversiti Putra MalaysiaSerdang 43400SelangorMalaysia Department of Crop Science Faculty of AgricultureKaduna State University801 KafanchanKaduna 801139Nigeria Department of Crop Science Faculty of AgricultureUniversiti Putra MalaysiaSerdang 43400SelangorMalaysia School of Environmental and Natural Resource Sciences Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi 43600SelangorMalaysia Rice Research Centre Malaysian Agricultural Research and Development InstituteSerdang 43400SelangorMalaysia

improved rice lines were developed frome three parents with the resistance or tolerance to bacterial leaf blight,blast and drought stress,respectively,using single-,double-and three-way *** improved lines were assessed for agro-morphological and yield traits under non-drought stress(NS)and reproductive-stage drought stress(RS)*** mean comparison of traits measured between parent plants and progenies(improved lines)were similar,and there were significant and non-significant differences among the parents and improved lines(genotypes)under NS and ***,there was significant and non-significant differences in the interaction among both parent varieties and improved lines for NS and *** and 3D-model of principal component analysis did not generate categorical clusters according to crossing methods,and there were no exclusive crossing method inclined variations under the *** improved lines were high-yielding,disease resistant,and drought-tolerant compared with their *** the crossing methods were good for this crop improvement program without preference to any,despite the number of genes introgressed.

关键词： rice bacteria leaf blight blast drought tolerance resistance gene

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Turbulent Kinetic Energy of Flow during inhale and Exhale to Characterize the Severity of Obstructive Sleep Apnea Patient

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Computer Modeling in Engineering & Sciences 2023年第7期136卷 43-61页

作者： W.M.Faizal C.Y.Khor Muhammad Nooramin Che Yaakob N.N.N.Ghazali M.Z.Zainon Norliza Binti ibrahim Roziana mohd razi Faculty of Mechanical Engineering&Technology University Malaysia PerlisPadang Besar02100Malaysia Department of Mechanical Engineering Faculty of EngineeringUniversity of MalayaKuala Lumpur50603Malaysia Department of Oral&Maxillofacial Clinical Science Faculty of DentistryUniversity of MalayaKuala Lumpur50603Malaysia Department of Paediatric Dentistry and Orthodontics Faculty of DentistryUniversity of MalayaKuala Lumpur50603Malaysia

This paper aims to investigate and present the numerical investigation of airflow characteristics using Turbulent Kinetic Energy(TKE)to characterize the upper airway with obstructive sleep apnea(OSA)under inhale and exhale breathing *** importance of TKE under both breathing conditions is that it showan accuratemethod in expressing the severity of flow in sleep *** fluid dynamics simulate the upper airway’s airflow via steady-state Reynolds-averaged Navier-Stokes(RANS)with k–ωshear stress transport(SST)*** three-dimensional(3D)airway model is created based on the CT scan images of an actual patient,meshed with 1.29 million elements using Materialise interactive Medical image Control System(MiMiCS)and ANSYS software,*** TKE were noticed around the region after the necking(smaller cross-sectional area)during the inhale and exhale *** turbulent kinetic energy could be used as a valuablemeasure to identify the severity of *** study is expected to provide a better understanding and clear visualization of the airflow characteristics during the inhale and exhale breathing in the upper airway of patients for medical practitioners in the OSA research field.

关键词： Obstructive sleep apnea breathing disorders real patient CFD turbulent kinetic energy

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Computational Analysis of Airflow in Upper Airway under Light and Heavy Breathing Conditions for a Realistic Patient Having Obstructive Sleep Apnea

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Computer Modeling in Engineering & Sciences 2021年第8期128卷 583-604页

作者： W.M.Faizal N.N.N.Ghazali C.Y.Khor M.Z.Zainon irfan Anjum Badruddin Sarfaraz Kamangar Norliza Binti ibrahim Roziana mohd razi Faculty of Mechanical Engineering Technology University Malaysia PerlisPerlisMalaysia Department of Mechanical Engineering Faculty of EngineeringUniversity of MalayaKuala Lumpur50603Malaysia Research Center for Advanced Materials Science King Khalid UniversityAbha61413Saudi Arabia Department of Mechanical Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia Department of Oral&Maxillofacial Clinical Science Faculty of DentistryUniversity of MalayaKuala Lumpur50603Malaysia Department of Paediatric Dentistry and Orthodontics Faculty of DentistryUniversity of MalayaKuala Lumpur50603Malaysia

Background:Obstructive sleep apnea is a sleeping disorder that has troubled a sizeable *** is an active area of research on obstructive sleep apnea that intends to better understand airflow behaviors and therefore treat patients more *** paper aims to investigate the airflow characteristics of the upper airway in an obstructive sleep apnea(OSA)patient under light and heavy breathing conditions by using Turbulent Kinetic Energy(TKE),an accurate method in expressing the flow concentration mechanisms of sleeping *** is important to visualize the concentration of flow in the upper airway in order to identify the severity level of the obstruction during ***:Computational fluid dynamic(CFD)analysis was used as a solution tool to evaluate the airflow during light and heavy breathing conditions.A medical imaging technique was used to extract the 3D model from the CT scan ***,mesh generation and simulation were carried out via CFD software to evaluate the light and heavy breathing characteristics related to obstructive sleep *** state Reynold’s averaged Navier-Stoke(RANS)with the k-ωshear stress transport(SST)turbulence model was *** airflow characteristics were quantified using parameters such as pressure distribution,skin friction coefficient,velocity profile,Reynolds number,turbulent Reynolds number and turbulence kinetic ***:Contour plots at different planes were used to visualize the airflow distribution as it passed through different cross-sectional areas of the *** results revealed that the presence of a smaller cross-sectional area of the airway caused an increase in airflow parameters,especially during heavy ***,turbulent airflow conditions along the airway were noticed during heavy *** severity of OSA could be measured by the turbulent kinetic energy which is able to show the behavior and concentration of mean *** study is expected to p

关键词： Human upper airway computational fluid dynamics obstructive sleep apnea turbulent kinetic energy

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Synthesis of Carbon Nanotubes by Chemical Vapor Deposition and their Application for CO2 and CH4 Detection

Synthesis of Carbon Nanotubes by Chemical Vapor Deposition a...

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international Conference on Nanotechnology and Biosensors（iCNB 2010）

作者： Amin Firouzi Shafreeza Sobri Faizah mohd Yasin Fakhru’l-razi b.Ahmadun Department of Chemical and Environmental Engineering Universiti Putra Malaysia Serdang

in this letter,we demonstrate synthesis of Carbon Nanotubes （CNTs） and also,fabrication and testing of CNTsbased gas *** were synthesized by Floating Catalyst Chemical Vapor Deposition （FC-CVD） at 950°C under methane gas flow rate of 150 Standard Cubic Centimeters per minute （SCCM） on quartz ***,the electrical resistance of CNTs was measured by exposing the sensor to CO2 and CH4 concentrations operating at room *** sensors were highly responsive to the gaseous *** the same experimental conditions,the recovery of the sensors was different for CO2 and *** fabrication process was relatively simple and did not require special techniques.

关键词： carbon nanotubes chemical vapor deposition electrical resistance gas exposure quartz substrate

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Cullet-Clay Brick from Recycle Glass

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材料科学与工程（中英文版） 2011年第3期5卷 293-297页

作者： Md. Rahim Sahar Munirah mohd razi Advanced Optical Material Research Group Department of Physics Faculty of Science Universiti Teknologi Malaysia 81310Skudai Johor Malaysia

Series of cullet-clay based ceramic from (100-x) cullet-(x) clay has successfully been made using a slip casting process before undergoing solid state reaction. The sample’s density has been determined by using Archimedes method while their hardness has been determined by Vickers hardness test. The Young modulus also has been determined and the ceramic crystallinity has been observed using the x-ray diffraction method. it is found out that the density of the samples is in the range of 2.05-2.20 g·cm-3 depending on the amount of cullet used. Meanwhile the hardness is observed to be around 65.71-240.3 MPa and is compositional dependence. The Young modulus is found to be around 309.9-650.8 MPa and is in the increasing trend as the amount of cullet is increased. The x-ray diffraction analysis showed that the ceramic is composed of silicate compound but the amount varies with the clay content.

关键词：碎玻璃粘土砖维氏硬度试验射线衍射分析回收杨氏模量阿基米德法复合硅酸盐

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